A composite plate rebound strength testing device

Abstract

The present invention relates to the technical field of composite plate testing, and specifically provides a composite plate rebound strength testing device. The present invention discloses a composite plate rebound strength testing device, including a support box, a flip assembly and an auxiliary rotation assembly, wherein the flip assembly is arranged on one side of the top of the support box, and the flip assembly includes an outer frame, a placement frame and a lifting cylinder. The present invention realizes the cleaning of the composite plate by the cleaning unit through the cooperation of the auxiliary rotation assembly and the cleaning unit on the flip assembly, and drives the placement frame to rotate 180 degrees on the outer frame through the cooperation of the auxiliary rotation assembly and the transmission unit on the flip assembly, thereby realizing the 180-degree flipping of the composite plate, so that the surface of the composite plate without steel bars faces the front side, which is convenient for the rebound test of the composite plate.

Description

Technical Field

[0001] The invention relates to the technical field of composite plate testing, and in particular to a composite plate rebound strength testing device. Background Art

[0002] Composite slabs refer to a type of prefabricated floor slabs that are made by stacking prefabricated slabs and cast-in-place reinforced concrete layers. Composite slabs are also a relatively commonly used building material in the construction industry. Composite slabs have a special manufacturing process and strong integrity, which can directly improve the seismic performance of buildings. The production process of composite slabs involves many steps. In order to ensure the production quality of composite slabs, the strength of the composite slabs needs to be tested before they are shipped from the factory to the construction site.

[0003] In the prior art, a concrete rebound tester is usually used to perform a rebound test on the surface of the composite plate without reinforcement. Currently, when the composite plates are stacked, the surface without reinforcement is located at the lower side, which is not convenient for rebound testing. A Chinese patent with publication number CN111366454B discloses a composite plate rebound strength testing device, which can realize the vertical tilting and fixing function of the composite plates, thereby facilitating the rebound strength test thereof.

[0004] However, the above-mentioned composite plate rebound strength testing device, through the cooperation of the pulley assembly and the composite plate hanging point, has the disadvantage that the composite plate is not firmly fixed and is prone to shaking, which affects the rebound strength test effect, and the composite plate needs to be hung upright during the test and hung to a horizontal state after the test, which is cumbersome to operate and reduces work efficiency; in addition, when the existing concrete rebound tester is testing the test surface, it is necessary to ensure that there are no foreign objects such as sand and gravel particles on the test surface to avoid affecting the detection of the concrete rebound tester. This requires the test personnel to manually clean the test point, which increases the labor intensity of the test personnel and reduces the efficiency of concrete strength detection.

[0005] For this purpose, we proposed a composite plate rebound strength testing device. Summary of the invention

[0006] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a composite plate rebound strength testing device.

[0007] The technical solution adopted by the present invention is as follows: The present invention provides a composite plate rebound strength testing device, including a support box, a flipping assembly and an auxiliary rotating assembly, the flipping assembly is arranged on one side of the top of the support box, the flipping assembly includes an outer frame, a placement frame and a lifting cylinder, the bottom of the outer frame is hinged to one side of the top of the support box, the lifting cylinder is hinged to one side of the support box through its non-output end, connecting rods are respectively fixed to the side walls of the two sides of the outer frame, and the output end of the lifting cylinder is rotatably connected to the other end of the connecting rod; the placement frame is rotatably installed in the outer frame, the flipping assembly also includes a cleaning unit and a transmission unit, the auxiliary rotating assembly is arranged on the top of the support box and is located on both sides of the outer frame, and the auxiliary rotating assembly is respectively connected to the cleaning unit and the transmission unit.

[0008] Furthermore, a rotating shaft 1 is rotatably connected to the inner bottom wall of the outer frame via a bearing, the bottom end of the placement frame is fixedly connected to the top end of the rotating shaft 1, a rotating shaft 2 is rotatably passed through the inner top wall of the outer frame via a bearing, the bottom end of the rotating shaft 2 is fixedly connected to the top end of the placement frame, and the top end of the rotating shaft 2 is connected to the transmission unit.

[0009] Further, the cleaning unit includes a horizontal plate, a screw rod, a guide rod, a first bevel gear, a second bevel gear, a gear 1 and a transmission shaft, wherein:

[0010] The horizontal plates are respectively fixed at the four corners of the front side walls of the outer frame, and the two groups of horizontal plates located above are fixed with vertical plates perpendicular to them. One end of the transmission shaft rotates through the vertical plate through a bearing, and the gear 1 is fixed to the other end of the transmission shaft. The upper and lower ends of the screw rod rotate through the horizontal plate on the same side through bearings, and the upper and lower ends of the guide rod are fixed to the horizontal plate on the other side. The first bevel gear is fixed on the transmission shaft and is located between gear 1 and the vertical plate. The second bevel gear is fixed at the top of the screw rod. The first bevel gear is meshed with the second bevel gear, and the gear 1 is connected to the auxiliary rotating assembly; the cleaning unit also includes a scraper, and the left and right ends of the scraper are respectively connected to the screw rod and the guide rod.

[0011] Furthermore, the scraper includes a movable plate, a sliding rod, a scraper and a spring, one end of the movable plate is threadedly sleeved on the screw rod, and the other end of the movable plate is slidably sleeved on the guide rod, one end of the sliding rod slides through the movable plate and is fixed to a limit plate, and the sliding rod is symmetrically and horizontally provided with two groups relative to the movable plate, the scraper is fixed on the other end of the sliding rod close to the outer frame, the spring is slidably sleeved on the sliding rod, and is in contact between the movable plate and the scraper.

[0012] Furthermore, the cross section of the scraper is an inverted triangle, the tip portion of the scraper facing the placement frame extends into the outer frame, and the scraper is arranged horizontally.

[0013] Furthermore, the transmission unit includes a worm, a worm wheel and gear 2, the two ends of the worm rotate through two vertical plates located on the upper part of the outer frame through bearings, the worm wheel is fixed at the top of the second rotating shaft, the worm is meshed with the worm wheel, the gear 2 is fixed at both ends of the worm, and the gear 2 is connected to the auxiliary rotating component.

[0014] Furthermore, the auxiliary rotating assembly includes an arc-shaped shell, a support column and a frame plate, the support column is fixedly arranged at the front position of the top of the support box and is symmetrical with respect to the support box, and arc-shaped openings are opened on the opposite sides of the two groups of arc-shaped shells, the center of the arc-shaped opening coincides with the center of the arc-shaped shell, and the center of the arc-shaped shell coincides with the center of the rotation trajectory of the outer frame, the top of the arc-shaped shell is fixedly arranged on the top of the support column, and the bottom end of the arc-shaped shell is fixedly provided with a frame plate, and the frame plate is fixedly connected to the top of the support box, a rack 1 is fixedly arranged on the bottom wall of the arc-shaped opening of the arc-shaped shell, and a rack 2 is fixedly arranged on the top wall of the arc-shaped opening of the arc-shaped shell, the rack 1 is close to one side of the support column, and the rack 2 is located in the middle of the arc-shaped shell, the gear 1 passes through the arc-shaped opening and intermittently meshes with the rack 1, and the gear 2 passes through the arc-shaped opening and intermittently meshes with the rack 2.

[0015] Furthermore, a return-shaped baffle surrounding its edge is fixedly provided on the rear side of the placement frame, and multiple groups of rotary clamping cylinders are installed on the front side of the placement frame, and the rotary clamping cylinders are used to clamp the composite plates inside the placement frame.

[0016] Furthermore, the scraper and the placement frame have the same horizontal width, a gap is left between the outer side of the placement frame and the inner side of the outer frame, and the placement frame and the outer frame can achieve relative rotation.

[0017] Furthermore, a clearance opening is provided on the top of the support box, the lifting cylinder moves through the clearance opening, and the frame plate is located above the clearance opening.

[0018] The beneficial effects achieved by the present invention using the above structure are as follows:

[0019] 1. The present invention uses an outer frame hingedly arranged on the top of the support box. Under the push of the lifting cylinder, it can achieve a 90-degree flip from a horizontal to a vertical state, thereby driving the placement frame inside the outer frame to flip synchronously. The placement frame is used to place the composite plate, thereby realizing the flipping of the composite plate from a horizontal to a vertical state. Through the cooperation of the cleaning unit on the auxiliary rotating component and the flipping component, the cleaning function of the cleaning unit on the composite plate is realized. Through the cooperation of the auxiliary rotating component and the transmission unit on the flipping component, the placement frame is driven to rotate 180 degrees inside the outer frame, thereby realizing a 180-degree flipping of the composite plate, so that the surface of the composite plate without steel bars faces the front side, which is convenient for rebound testing of the composite plate. Compared with the current status of the hoisting test in the prior art, the present invention uses a surface contact method to fix the composite plate through the placement frame, which has a large contact area, is firmly fixed, and is convenient for flipping and testing, which is a substantial improvement.

[0020] 2. The present invention can realize the function of the scraper moving along the length direction of the screw rod and the sliding rod through the cooperation of the cleaning unit and the auxiliary rotating assembly, and remove impurities from the side of the composite plate without steel bars. When in use, the lifting cylinder continues to drive the outer frame to flip. At this time, the gear is meshed with the rack at the beginning, and the gear rotates, driving the transmission shaft to rotate, the transmission shaft drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, and then drives the screw rod to rotate, thereby driving the moving plate to move from top to bottom along the screw rod and the sliding rod, and then drives the scraper to move downward. The scraper can scrape off the gravel particles and impurities on the side of the composite plate without steel bars. On the one hand, it can reduce the labor intensity of the staff and improve work efficiency. On the other hand, it prevents impurities from affecting the test accuracy of the rebound tester, and indirectly improves the test efficiency. In addition, the linkage effect is achieved, that is, in the process of driving the composite plate to flip, the cleaning function is also realized synchronously. The two complement each other and are inseparable, with good transmission effect and strong follow-up performance of the overall structure.

[0021] 3. The present invention realizes the 180-degree rotation function of the placement frame through the cooperation of the transmission unit and the auxiliary rotating component, and then realizes the 180-degree rotation function of the composite plate, and realizes the switching of the two sides of the composite plate. When in use, the lifting cylinder is started to extend, driving the outer frame to flip upward, and then driving the placement frame and the composite plate to flip upward. During the flipping process, gear two will also move along the arc trajectory of the arc shell. When gear two moves to rack two, gear two begins to mesh with rack two and rotate, thereby driving the worm to rotate, and the worm drives the worm wheel to rotate, and then drives the rotating shaft two to rotate, and then drives the placement frame to rotate. When gear two is separated from rack two, the placement frame just rotates 180 degrees at this time, so that the side of the composite plate with steel bars faces the ground, and the side without steel bars faces the scraper. Therefore, when the outer frame is flipped, the placement frame can be rotated at the same time, both the composite plate is erected and the two sides of the composite plate are switched, which is convenient for the subsequent rebound test of the composite plate and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the present invention from another viewing angle;

[0025] Figure 3 It is a front view of the present invention;

[0026] Figure 4 It is a three-dimensional structural schematic diagram of the auxiliary rotating assembly and the supporting box in the present invention;

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the flip assembly and the support box in the present invention;

[0028] Figure 6 It is a three-dimensional structural schematic diagram of the flip assembly and the support box in the present invention from another perspective;

[0029] Figure 7 It is a schematic diagram of the three-dimensional structure of the flip assembly in the present invention;

[0030] Figure 8 A schematic diagram of the three-dimensional structure of the flip assembly in the present invention from another perspective;

[0031] Fig. 9 It is a schematic diagram of the three-dimensional structure of the inner and outer frames of the present invention;

[0032] Fig.10It is a schematic diagram of the three-dimensional structure of the placement frame in the present invention;

[0033] Fig.11 It is a schematic diagram of the three-dimensional structure of the scraper in the present invention.

[0034] Among them, 1. Support box, 2. Flip assembly, 3. Auxiliary rotation assembly, 21. Outer frame, 22. Placement frame, 23. Lifting cylinder, 24. Connecting rod, 25. Rotation axis 1, 26. Rotation axis 2, 27. Cleaning unit, 28. Transmission unit, 271. Horizontal plate, 272. Screw rod, 273. Guide rod, 274. First bevel gear, 275. Second bevel gear, 276. Gear 1, 277. Transmission Shaft, 278, vertical plate, 279, scraper, 2791, movable plate, 2792, sliding rod, 2793, scraper, 2794, spring, 2795, limit plate, 281, worm, 282, worm wheel, 283, gear 2, 31, arc-shaped shell, 32, support column, 33, frame plate, 34, rack 1, 35, rack 2, 221, return baffle, 222, rotary clamping cylinder, 11, avoidance. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] like Figure 1-Figure 11As shown, a composite plate rebound strength testing device of the present invention includes a support box 1, a flip assembly 2 and an auxiliary rotation assembly 3, the flip assembly 2 is arranged on one side of the top of the support box 1, the flip assembly 2 includes an outer frame 21, a placement frame 22 and a lifting cylinder 23, the bottom of the outer frame 21 is hinged to one side of the top of the support box 1, the lifting cylinder 23 is hinged to one side of the support box 1 through its non-output end, connecting rods 24 are respectively fixed to the side walls of both sides of the outer frame 21, the output end of the lifting cylinder 23 is rotatably connected to the other end of the connecting rod 24; the placement frame 22 is rotatably installed in the outer frame 21, the flip assembly 2 also includes a cleaning unit 27 and a transmission unit 28, the auxiliary rotation assembly 3 is arranged on the top of the support box 1, and is located on both sides of the outer frame 21, and the auxiliary rotation assembly 3 is respectively connected to the cleaning unit 27 and the transmission unit 28.

[0038] By hingedly setting the outer frame 21 on the top of the support box 1, under the push of the lifting cylinder 23, it can realize a 90-degree flip from a horizontal to a vertical state, thereby driving the placement frame 22 inside the outer frame 21 to flip synchronously. The placement frame 22 is used to place the composite plate, thereby realizing the flipping of the composite plate from a horizontal to a vertical state. Through the cooperation of the auxiliary rotating component 3 and the cleaning unit 27 on the flipping component 2, the cleaning unit 27 can clean the composite plate. Through the cooperation of the auxiliary rotating component 3 and the transmission unit 28 on the flipping component 2, the placement frame 22 is driven to rotate 180 degrees in the outer frame 21, thereby realizing the 180-degree flipping of the composite plate, so that the surface of the composite plate without steel bars faces the front side, which is convenient for the rebound test of the composite plate.

[0039] like Figure 1-Figure 11 As shown, the inner bottom wall of the outer frame 21 is rotatably connected to a rotating shaft 25 via a bearing, the bottom end of the placement frame 22 is fixedly connected to the top of the rotating shaft 25, and a rotating shaft 26 rotatably penetrates the inner top wall of the outer frame 21 via a bearing, the bottom end of the rotating shaft 26 is fixedly connected to the top of the placement frame 22, and the top of the rotating shaft 26 is connected to the transmission unit 28.

[0040] By setting the rotating shaft 1 25 and the rotating shaft 2 26, the placing frame 22 is rotatably installed inside the outer frame 21. When the outer frame 21 is turned over by the lifting cylinder 23, the placing frame 22 can rotate inside the outer frame 21 at the same time, so as to realize the switching of the placing frame 22 from the horizontal to the vertical state and the 180-degree rotation switching of the front and rear surfaces of the placing frame 22.

[0041] like Figure 1-Figure 11 As shown, the cleaning unit 27 includes a horizontal plate 271, a screw rod 272, a guide rod 273, a first bevel gear 274, a second bevel gear 275, a gear 1 276 and a transmission shaft 277, wherein:

[0042] The horizontal plates 271 are fixedly arranged at the four corners of the front side wall of the outer frame 21 respectively; vertical plates 278 perpendicular to each other are fixedly arranged on the two groups of horizontal plates 271 located above; one end of the transmission shaft 277 rotates through the vertical plate 278 through a bearing; gear 1 276 is fixedly arranged on the other end of the transmission shaft 277; the upper and lower ends of the screw rod 272 rotate through the horizontal plate 271 located on the same side through bearings; the upper and lower ends of the guide rod 273 are fixedly arranged on the horizontal plate 271 on the other side; the first bevel gear 274 is fixedly arranged on the transmission shaft 277 and is located between gear 1 276 and the vertical plate 278; the second bevel gear 275 is fixedly arranged on the top of the screw rod 272; the first bevel gear 274 is meshed with the second bevel gear 275; gear 1 276 is connected to the auxiliary rotating component 3; the cleaning unit 27 also includes a scraper 279; the left and right ends of the scraper 279 are respectively connected to the screw rod 272 and the guide rod 273.

[0043] By cooperating with the cleaning unit 27 and the auxiliary rotating assembly 3, the scraper 279 can remove impurities from the side of the composite plate without reinforcement. The gravel particles and impurities on the side of the composite plate without reinforcement can be cleaned and scraped off. On the one hand, the labor intensity of the staff can be reduced and the work efficiency can be improved. On the other hand, impurities can be prevented from affecting the test accuracy of the rebound hammer.

[0044] like Figure 1-Figure 11 As shown, the scraper 279 includes a moving plate 2791, a sliding rod 2792, a scraper 2793 and a spring 2794. One end of the moving plate 2791 is threadedly sleeved on the screw rod 272, and the other end of the moving plate 2791 is slidably sleeved on the guide rod 273. One end of the sliding rod 2792 slides through the moving plate 2791 and is fixedly connected to a limit plate 2795. The sliding rod 2792 is symmetrically and horizontally provided with two groups relative to the moving plate 2791. The scraper 2793 is fixedly provided on the other end of the sliding rod 2792 close to the outer frame 21. The spring 2794 is slidably sleeved on the sliding rod 2792 and abuts between the moving plate 2791 and the scraper 2793.

[0045] The scraper 279 is arranged to move along the length direction of the screw rod 272 and the sliding rod 2792 to remove impurities on the side of the composite plate without reinforcement. When in use, the lifting cylinder 23 continues to drive the outer frame 21 to flip, and at this time, the gear 276 begins to mesh with the rack 34, and the gear 276 rotates, driving the transmission shaft 277 to rotate, and the transmission shaft 277 drives the first bevel gear 274 to rotate, and the first bevel gear 274 drives the second bevel gear 275 to rotate, thereby driving the screw rod 272 to rotate, thereby driving the movable plate 2791 to move from top to bottom along the screw rod 272 and the sliding rod 2792, and then driving the scraper 2793 to move downward. It should be noted that the initial position of the scraper 2793 is located in the outer frame 21 and above the placement frame 22. Therefore, when the scraper When the plate 2793 moves downward, the inclined surface of the scraper 2793 will first slide and squeeze into contact with the top edge of the placement frame 22, driving the scraper 2793 to move toward the side of the movable plate 2791 and squeeze the spring 2794. When the scraper 2793 moves to above the opening of the placement frame 22, the scraper 2793 is driven to move into the placement frame 22 under the rebound force of the spring 2794. Since a superimposed plate is fixed in the placement frame 22, the scraper 2793 is tightly attached to the side of the superimposed plate without steel bars. When the scraper 2793 continues to move downward, the scraper 2793 can scrape off the gravel particles and impurities on the side of the superimposed plate without steel bars. When the outer frame 21 is flipped to a vertical state, the scraper 2793 moves to the area between the bottom end of the placement frame 22 and the outer frame 21 to complete the scraping work.

[0046] like Figure 1-Figure 11 As shown, the cross-section of the scraper 2793 is an inverted triangle, and the tip portion of the scraper 2793 toward the placement frame 22 extends into the outer frame 21, and the scraper 2793 is horizontally arranged. The scraper 2793 is arranged into an inverted triangle, and the tip portion of the scraper 2793 toward the placement frame 22 extends into the outer frame 21. On the one hand, the tip of the scraper 2793 can scrape the surface of the overlapping plate, and on the other hand, it is convenient for the inclined surface of the scraper 2793 to contact the surface of the placement frame 22, so that the scraper 2793 can slide across the surface of the placement frame 22, and then cooperate with the compression and rebound of the spring 2794 to enable the scraper 2793 to enter the placement frame 22 and press the overlapping plate in the placement frame 22, so as to better scrape off the foreign particles on the overlapping plate.

[0047] like Figure 1-Figure 11 As shown, the transmission unit 28 includes a worm 281, a worm wheel 282 and a gear 283. The two ends of the worm 281 rotate through the two vertical plates 278 located on the upper part of the outer frame 21 through bearings. The worm wheel 282 is fixed to the top of the rotating shaft 26. The worm 281 is meshed with the worm wheel 282. The gear 283 is fixed to the two ends of the worm 281, and the gear 283 is connected to the auxiliary rotating component 3.

[0048] By cooperating with the transmission unit 28 and the auxiliary rotating assembly 3, the placement frame 22 can rotate 180 degrees, and then the stacking plate can rotate 180 degrees, so as to switch the orientation of the two sides of the stacking plate. When in use, the lifting cylinder 23 is started to extend, driving the outer frame 21 to flip upward, and then driving the placement frame 22 and the stacking plate to flip upward. During the flipping process, the gear 283 will also move along the arc trajectory of the arc shell 31. When the gear 283 moves to the rack 235, the gear 283 starts to mesh with the rack 235 and rotates, thereby driving the worm gear 283 to rotate. The rod 281 rotates, and the worm 281 drives the worm wheel 282 to rotate, which in turn drives the rotating shaft 26 to rotate, and then drives the placement frame 22 to rotate. When the gear 283 is separated from the rack 235, the placement frame 22 rotates 180 degrees, so that the side of the composite plate with steel bars faces the ground, and the side without steel bars faces the scraper 2793. Therefore, when the outer frame 21 is flipped, the placement frame 22 can rotate at the same time, which not only stands up the composite plate, but also switches the two sides of the composite plate, which is convenient for the subsequent rebound test of the composite plate and improves work efficiency.

[0049] like Figure 1-Figure 11 As shown, the auxiliary rotating assembly 3 includes an arc-shaped shell 31, a support column 32 and a frame plate 33. The support column 32 is fixedly arranged at the front position of the top of the supporting box 1 and is symmetrical with respect to the supporting box 1. The two sets of arc-shaped shells 31 are provided with arc-shaped openings on the opposite sides. The center of the arc-shaped opening coincides with the center of the arc-shaped shell 31. The center of the arc-shaped shell 31 coincides with the center of the rotation trajectory of the outer frame 21. The top of the arc-shaped shell 31 is fixedly arranged at the top of the support column 32. A frame plate 33 is fixedly provided at the bottom end of the shell 31, and the frame plate 33 is fixedly connected to the top of the support box 1, a rack 1 34 is fixedly provided on the bottom wall of the arc-shaped opening of the arc-shaped shell 31, and a rack 2 35 is fixedly provided on the top wall of the arc-shaped opening of the arc-shaped shell 31, the rack 1 34 is close to one side of the support column 32, and the rack 2 35 is located in the middle of the arc-shaped shell 31, the gear 1 276 passes through the arc-shaped opening and intermittently meshes with the rack 1 34, and the gear 2 283 passes through the arc-shaped opening and intermittently meshes with the rack 2 35.

[0050] By setting up the auxiliary rotating component 3, the rack 1 34 and the gear 1 276 thereon are used to cooperate to realize the rotation of the screw rod 272 on the cleaning unit 27, thereby realizing the movement of the scraper 2793 to remove impurities on the surface of the composite plate; the rack 2 35 and the gear 2 283 thereon are used to realize the rotation of the rotating shaft 26 on the transmission unit 28, thereby realizing the rotation of the placement frame 22 by 180 degrees, realizing the switching of the front and rear sides of the placement frame 22, and thereby making the side of the composite plate without steel bars face the scraper 2793, on the one hand, facilitating the subsequent scraper 2793 to clean the impurities on the surface of the composite plate. In addition, on the other hand, it is convenient for the staff to conduct a rebound strength test on the side of the composite plate without steel bars; it should also be noted that rack 2 35 is located in the middle of the arc-shaped shell 31, so that the outer frame 21 and the placement frame 22 can rise to a certain height to avoid movement interference between the placement frame 22 and the top of the support box 1 when it rotates; rack 1 34 is close to one side of the support column 32, so that when gear 2 283 is separated from rack 2 35, rack 1 34 starts to engage with gear 1 276, so as to allow the placement frame 22 to rotate 180 degrees before cleaning the composite plate inside the placement frame 22.

[0051] like Figure 1-Figure 11 As shown, a return baffle 221 surrounding the edge is fixedly provided on the rear side surface of the placement frame 22, and multiple sets of rotary clamping cylinders 222 are installed on the front side surface of the placement frame 22. The rotary clamping cylinders 222 are used to clamp the superimposed plates inside the placement frame 22. The return baffle 221 set in the placement frame 22 is used to support the superimposed plates placed in the placement frame 22, and the rotary clamping cylinders 222 are used to clamp the superimposed plates in the placement frame 22. It should be noted that after the superimposed plates are placed in the placement frame 22, the top of the superimposed plates is flush with the surface of the placement frame 22, which is to facilitate the scraper 2793 to press and scrape the surface of the superimposed plates.

[0052] like Figure 1-Figure 11 As shown, the horizontal widths of the scraper 2793 and the placement frame 22 are equal, which facilitates the scraper 2793 to enter the placement frame 22 and press and scrape the surface of the overlapping plate. A gap is left between the outer side of the placement frame 22 and the inner side of the outer frame 21, and the placement frame 22 and the outer frame 21 can achieve relative rotation.

[0053] like Figure 1-Figure 11 As shown, a avoidance opening 11 is opened on the top of the support box 1, and the lifting cylinder 23 moves through the avoidance opening 11. The frame plate 33 is located above the avoidance opening 11. The avoidance opening facilitates the movement of the lifting cylinder 23 in and out of the support box 1, and the lifting cylinder 23 is arranged in the support box 1, which facilitates the outer frame 21 and the placement frame 22 to be flipped to a horizontal state, and facilitates the lifting of the composite plate into the placement frame 22.

[0054] During the test, the lifting cylinder 23 is initially in a retracted state, at which time the outer frame 21 and the placement frame 22 are both in a horizontal state, and then the laminated board is hoisted into the placement frame 22. Since the placement frame 22 is in a horizontal state, it is convenient to place the laminated board into the placement frame 22, and at this time the return baffle 221 is located at the bottom of the placement frame 22, and the return baffle 221 will limit the laminated board in the placement frame 22, and then start the rotary clamping cylinder 222 to fix the laminated board in the placement frame 22;

[0055] Next, the lifting cylinder 23 is started to extend, driving the outer frame 21 to flip upward, and then driving the placement frame 22 and the composite plate to flip upward. During the flipping process, the gear 1 276 and the gear 2 283 will also move along the arc track of the arc shell 31. First, when the gear 2 283 moves to the rack 2 35, the gear 2 283 starts to mesh with the rack 2 35 and rotates, thereby driving the worm 281 to rotate, and the worm 281 drives the worm wheel 282 to rotate, thereby driving the rotating shaft 26 to rotate, and then driving the placement frame 22 to rotate. When the gear 2 283 is separated from the rack 2 35, the placement frame 22 is rotated 180 degrees, so that the side of the composite plate with steel bars faces the ground, and the side without steel bars faces the scraper 2793.

[0056] Then, the lifting cylinder 23 continues to drive the outer frame 21 to flip, at this time, the gear 276 begins to mesh with the rack 34, the gear 276 rotates, driving the transmission shaft 277 to rotate, the transmission shaft 277 drives the first bevel gear 274 to rotate, the first bevel gear 274 drives the second bevel gear 275 to rotate, and then drives the screw rod 272 to rotate, thereby driving the movable plate 2791 to move from top to bottom along the screw rod 272 and the sliding rod 2792, and then drives the scraper 2793 to move downward. It should be noted that the initial position of the scraper 2793 is located in the outer frame 21 and above the placement frame 22. Therefore, when the scraper 2793 moves downward, the inclined surface of the scraper 2793 will first slide and squeeze the top edge of the placement frame 22, driving the scraper 2793 to move to the side of the movable plate 2791 and squeeze the spring 2794. When the scraper 2793 moves to the placement frame 22 When the outer frame 21 is flipped to a vertical position, the scraper 2793 moves to the area between the bottom end of the placement frame 22 and the outer frame 21, thereby completing the flipping and cleaning of the composite plate. After the composite plate is flipped, its side without steel bars faces the front side, which is convenient for the staff to perform a rebound test on it, and clean and scrape away the crushed stone particles and impurities on the side without steel bars of the composite plate. On the one hand, it reduces the labor intensity of the staff and improves the work efficiency, and on the other hand, it prevents impurities from affecting the test accuracy of the rebound tester.

[0057] When the test is over, the lifting cylinder 23 is started to contract, so that the outer frame 21 is flipped from the vertical state to the horizontal state. In this process, the gear 1 276 first rotates along the rack 1 34, driving the screw rod 272 to reverse, so that the movable plate 2791 moves from bottom to top. When the movable plate 2791 moves to the top of the placement frame 22 with the scraper 2793, the rack 1 34 is separated from the gear 1 276. At this time, the gear 2 283 starts to mesh with the rack 2 35 and rotates, driving the worm 281 to reverse, and then driving the worm wheel 282 and the rotating shaft 2 26 to reverse, and then driving the placement frame 22 to rotate in the outer frame 21. When the gear 2 283 is separated from the rack 2 35, the placement frame 22 rotates exactly 180 degrees, so that the side of the composite plate with steel bars faces upward, and then contacts the limit fixation of the rotary clamping cylinder 222, and then the composite plate is lifted out of the placement frame 22, and all the work of testing the composite plate is completed.

[0058] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0059] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0060] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A composite plate rebound strength testing device, characterized in that: The invention comprises a support box (1), a flip assembly (2) and an auxiliary rotating assembly (3), wherein the flip assembly (2) is arranged on one side of the top of the support box (1), the flip assembly (2) comprises an outer frame (21), a placement frame (22) and a lifting cylinder (23), the bottom of the outer frame (21) is hinged to one side of the top of the support box (1), the lifting cylinder (23) is hinged to one side of the support box (1) through its non-output end, connecting rods (24) are respectively fixed to the side walls of both sides of the outer frame (21), and the output end of the lifting cylinder (23) is rotatably connected to the other end of the connecting rod (24); the placement frame (22) is rotatably installed in the outer frame (21), the flip assembly (2) further comprises a cleaning unit (27) and a transmission unit (28), the auxiliary rotating assembly (3) is arranged on the top of the support box (1) and located on both sides of the outer frame (21), and the auxiliary rotating assembly (3) is respectively connected to the cleaning unit (27) and the transmission unit (28); The auxiliary rotating assembly (3) comprises an arc-shaped shell (31), a supporting column (32) and a frame plate (33); the supporting column (32) is fixedly arranged at the front position of the top of the supporting box (1) and is symmetrical with respect to the supporting box (1); arc-shaped openings are opened on opposite sides of the two groups of the arc-shaped shells (31); the center of the arc-shaped openings coincides with the center of the arc-shaped shell (31); the center of the arc-shaped shell (31) coincides with the center of the rotation trajectory of the outer frame (21); the top end of the arc-shaped shell (31) is fixedly arranged on the top of the supporting column (32); the bottom end of the arc-shaped shell (31) is fixedly provided with a frame plate (33); the frame plate (33) is fixedly connected to the top of the supporting box (1); The inner bottom wall of the outer frame (21) is rotatably connected to a rotating shaft 1 (25) via a bearing, the bottom end of the placement frame (22) is fixedly connected to the top end of the rotating shaft 1 (25), and the inner top wall of the outer frame (21) is rotatably penetrated by a rotating shaft 2 (26) via a bearing, the bottom end of the rotating shaft 2 (26) is fixedly connected to the top end of the placement frame (22), and the top end of the rotating shaft 2 (26) is connected to a transmission unit (28); The cleaning unit (27) comprises a gear 1 (276), a horizontal plate (271), a screw rod (272), a guide rod (273), a first bevel gear (274), a second bevel gear (275) and a transmission shaft (277), wherein the gear 1 (276) is connected to the auxiliary rotating assembly (3); the cleaning unit (27) further comprises a scraper (279), wherein the left and right ends of the scraper (279) are respectively connected to the screw rod (272) and the guide rod (273); The transmission unit (28) comprises a second gear (283), a worm (281) and a worm wheel (282); the second gear (283) is connected to the auxiliary rotating assembly (3); The auxiliary rotating assembly (3) further comprises a rack gear 1 (34) and a rack gear 2 (35), wherein the rack gear 1 (34) is fixedly arranged on the bottom wall of the arc-shaped opening of the arc-shaped shell (31), and the rack gear 2 (35) is fixedly arranged on the top wall of the arc-shaped opening of the arc-shaped shell (31), the rack gear 1 (34) is close to one side of the support column (32), and the rack gear 2 (35) is located in the middle of the arc-shaped shell (31), the gear gear 1 (276) passes through the arc-shaped opening and intermittently meshes with the rack gear 1 (34), and the gear gear 2 (283) passes through the arc-shaped opening and intermittently meshes with the rack gear 2 (35); When the second gear (283) is separated from the second rack (35), the first rack (34) begins to mesh with the first gear (276), so that the placement frame (22) is rotated 180 degrees before cleaning the stacking plate inside the placement frame (22).

2. The composite plate rebound strength testing device according to claim 1, characterized in that: The horizontal plates (271) are respectively fixed at the four corners of the front side wall of the outer frame (21); vertical plates (278) perpendicular to the horizontal plates (271) are fixed on the two groups of horizontal plates (271) located at the top; one end of the transmission shaft (277) is rotatably passed through the vertical plate (278) through a bearing; the gear 1 (276) is fixed on the other end of the transmission shaft (277); the upper and lower ends of the screw rod (272) are rotatably passed through the horizontal plate (271) located on the same side through bearings; the upper and lower ends of the guide rod (273) are fixed on the horizontal plate (271) on the other side; the first bevel gear (274) is fixed on the transmission shaft (277) and is located between the gear 1 (276) and the vertical plate (278); the second bevel gear (275) is fixed on the top of the screw rod (272); the first bevel gear (274) is meshed with the second bevel gear (275).

3. The composite plate rebound strength testing device according to claim 2, characterized in that: The scraper (279) comprises a moving plate (2791), a sliding rod (2792), a scraper (2793) and a spring (2794); one end of the moving plate (2791) is threadedly sleeved on the screw rod (272); the other end of the moving plate (2791) is slidably sleeved on the guide rod (273); one end of the sliding rod (2792) slides through the moving plate (2791) and is fixedly connected to a limit plate (2795); and the sliding rod (2792) is symmetrically and horizontally provided with two groups relative to the moving plate (2791); the scraper (2793) is fixedly provided on the other end of the sliding rod (2792) close to the outer frame (21); and the spring (2794) is slidably sleeved on the sliding rod (2792) and abuts between the moving plate (2791) and the scraper (2793).

4. The composite plate rebound strength testing device according to claim 3, characterized in that: The scraper (2793) has an inverted triangle cross section, the tip portion of the scraper (2793) facing the placement frame (22) extends into the outer frame (21), and the scraper (2793) is arranged horizontally; the inclined surface of the scraper (2793) can contact the surface of the placement frame (22), so that the scraper (2793) can pass through the surface of the placement frame (22).

5. The composite plate rebound strength testing device according to claim 4, characterized in that: The two ends of the worm (281) are rotatably connected to two vertical plates (278) located on the upper part of the outer frame (21) via bearings; the worm wheel (282) is fixedly arranged on the top of the second rotating shaft (26); the worm (281) is meshed with the worm wheel (282); and the second gear (283) is fixedly arranged on the two ends of the worm (281).

6. The composite plate rebound strength testing device according to claim 5, characterized in that: The support box (1) is provided with an escape opening (11) at the top, the lifting cylinder (23) moves through the escape opening (11), and the frame plate (33) is located above the escape opening (11).

7. The composite plate rebound strength testing device according to claim 6, characterized in that: The scraper (2793) and the placement frame (22) have the same horizontal width, a gap is left between the outer side of the placement frame (22) and the inner side of the outer frame (21), and the placement frame (22) and the outer frame (21) can achieve relative rotation.

8. The composite plate rebound strength testing device according to claim 7, characterized in that: A return-shaped baffle (221) surrounding the edge is fixedly provided on the rear side of the placement frame (22), and a plurality of sets of rotary clamping cylinders (222) are installed on the front side of the placement frame (22). The rotary clamping cylinders (222) are used to clamp the laminated plates inside the placement frame (22).

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