Bearing capacity detection structure for bottom plate of assembly box

Abstract

The utility model discloses a bearing capacity detection structure for a bottom plate of an assembly box, when the bearing capacity detection structure is used for detection, a driving mechanism can be used for driving a rotating rod to rotate, so that two bases on the rotating rod and supports on the bases can be driven to synchronously get close to or away from each other; the distance between every two supports is matched with the size of the to-be-detected bottom plate, the distances between the two supports and the center rotating seat in the same direction can be kept equal, and the situation that detection fails or detection results have large deviation due to the fact that supporting force borne by the to-be-detected bottom plate is not evenly distributed is avoided. The bearing capacity detection structure is flexible in support spacing adjustment, simple in operation and suitable for detection of bottom plates of various dimensions, the problem that an existing bearing capacity detection structure for the assembly box bottom plate is poor in flexibility can be effectively solved, and the effects of reducing the detection cost and improving the detection accuracy are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of detection tools, and in particular relates to a bearing capacity detection structure for an assembly box bottom plate. Background Art

[0002] In order to simplify the construction process and improve construction efficiency, prefabricated construction has become a key research direction in the construction field; the prefabricated box dense-rib floor is an prefabricated construction method that connects the prefabricated assembly box with the cast-in-place rib beam to form a floor or roof. For example, Chinese patent CN204826352U discloses a hollow floor assembly box, which is assembled from three parts: a reinforced concrete top plate, a bottom plate and a side wall tube made of hard material. In order to ensure that the structural strength of the assembly box meets the construction requirements, it is necessary to use a load-bearing capacity detection structure to test the bearing capacity of the bottom plate of the assembly box. The load-bearing capacity detection structure mainly includes a force-applying component and a support component. During the test, the bottom plate to be tested is placed on the support component so that its middle part is suspended in the air, and pressure is applied to the middle part of the upper surface of the bottom plate to be tested by using the force-applying component; the force-applying component generally uses a pressure testing machine, and there are mainly two types of support components. One is to place the bottom plate to be tested on four supports distributed in a rectangular shape to form a four-corner simple support. The other is to place the bottom plate to be tested on a hollow support frame so that the edge of the lower surface of the bottom plate to be tested abuts against a circle of flanges on the inner wall of the support frame to form a four-side simple support.

[0003] In order to meet the bearing capacity test of assembly boxes of various sizes and specifications, for the four-corner simple supports, the horizontal spacing between each support and the upper platen of the pressure testing machine needs to be adjusted accordingly. However, since each support is independent of each other, it is difficult to ensure the same adjustment range during adjustment, which can easily cause uneven distribution of the support force on the bottom plate to be tested, resulting in test failure or large deviations in the test results. For the four-side simple supports, it is necessary to prepare multiple support frames that match the sizes of the various bottom plates to be tested. Preparing and storing a large number of support frames will increase the test cost. Therefore, it is necessary to design a test structure that can be flexibly adjusted to adapt to the bearing capacity test of assembly boxes of various specifications, so as to reduce the difficulty and cost of testing and improve the accuracy of testing. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide a bearing capacity detection structure for the bottom plate of an assembly box, so as to solve the technical problem that the bearing capacity detection structure for the bottom plate of the assembly box has poor flexibility, thereby achieving the effect of reducing detection costs and improving detection accuracy.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] The cam is an angular channel formed between a central axis and a central axis, and the channel is connected to the rotation axis of the central axis to form a circle, the circle being a circle with a central axis in the center, the circle being a central axis having two axes of rotation and a circle with a central axis in the center.

[0007] Furthermore, a positioning plate is vertically provided at the upper end of the base. The positioning plate is higher than the support and is located on a side of the support away from the central rotating seat. One side of the positioning plate faces the central rotating seat and is connected and covered with an elastic baffle.

[0008] Furthermore, a displacement sensor with a detection end facing upward is provided at the upper end of the central rotating seat, and an L-shaped bracket including a vertical rod and a horizontal rod is provided on the positioning plate. The L-shaped bracket is rotatably connected to the positioning plate with the vertical rod as the rotating axis, and the horizontal rod faces the central rotating seat and is connected to the displacement sensor with a detection end facing downward.

[0009] Furthermore, a slide groove is respectively opened between the central rotating seat and each peripheral rotating seat on the support plate, and the length direction of the slide groove corresponds to the axial direction of the upper rotating rod. The lower end of the base is protruded to form a slider that matches and slides with the lower slide groove.

[0010] Furthermore, the driving mechanism is a hand crank.

[0011] Furthermore, the support is detachably connected to the base via bolts.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] In the load-bearing capacity detection structure for the bottom plate of an assembly box described in the utility model, two supports in the same direction are respectively located on two bases on the same rotating rod, and the two bases are respectively threadedly connected to two sections of threads on the rotating rod with opposite rotation directions. When the rotating rod is driven to rotate by a driving mechanism, not only can the two bases on the rotating rod and the supports thereon be driven to move together or apart synchronously, so that the distance between the supports is adapted to the size of the bottom plate to be tested, but also the distance between the two supports and the central rotating seat in the same direction can be kept equal, thereby avoiding the situation that the detection failure or the large deviation of the detection result occurs due to the uneven distribution of the supporting force on the bottom plate to be tested; the load-bearing capacity detection structure is more flexible in adjusting the support spacing and is simple to operate, and is suitable for the detection of bottom plates of various sizes and specifications, and can effectively solve the problem of poor flexibility of the current load-bearing capacity detection structure for the bottom plate of an assembly box, thereby achieving the effect of reducing the detection cost and improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A front view showing a partial cross section of the bearing capacity detection structure described in the embodiment;

[0015] Figure 2 It is a top view of the support assembly described in the embodiment (the L-shaped bracket and the displacement sensor thereon are hidden);

[0016] Figure 3 for Figure 1 The enlarged view of point A in the middle;

[0017] Among them, there are a force-applying component 1, a pressure-applying end 11, a support plate 21, a slide groove 211, a central rotating seat 22, a peripheral rotating seat 23, a rotating rod 24, a base 25, a positioning plate 251, an elastic baffle 252, a slider 253, a support 26, a displacement sensor 27, an L-shaped bracket 28, a pad 3, a hand crank 4, and a bottom plate to be tested 5. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0019] Example:

[0020] See also Figure 1 and Figure 2A bearing capacity detection structure for an assembly box bottom plate includes a force-applying component 1 and a supporting component. The supporting component includes a supporting plate 21. The supporting plate 21 is provided with a central rotating seat 22 and four peripheral rotating seats 23. The central rotating seat 22 is rotatably connected with two rotating rods 24 that penetrate the central rotating seat 22 horizontally and are perpendicular to each other. The two rotating rods 24 have a height difference in the vertical direction. The four peripheral rotating seats 23 are arranged around the central rotating seat 22 and correspond to the positions of the ends of the rotating rods 24 one by one. The ends of the rotating rods 24 are rotatably connected with the corresponding peripheral rotating seats 23. One end of the rotating rod 24 penetrates the corresponding peripheral rotating seat 2 3 and connected to a driving mechanism; the rotating rod 24 has a thread on the rod section between the central rotating seat 22 and the peripheral rotating seat 23, and the threads of the same rotating rod 24 on both sides of the central rotating seat 22 are in opposite directions, and the rotating rod 24 is threadedly connected to the base 25 on both sides of the central rotating seat 22, the lower end of the base 25 is slidably matched with the support plate 21 and rotated, and the upper end of the base 25 is detachably connected to the support 26, and the two supports 26 on the same rotating rod 24 are at an equal distance from the central rotating seat 22; the force applying component 1 is arranged above the support component, and the pressure acting end 11 of the force applying component 1 is vertically opposite to the central rotating seat 22.

[0021] like Figure 1 As shown, when the utility model is in use, the driving mechanism is used to drive the rotating rod 24 to rotate, driving the two bases 25 on the rotating rod 24 and the support 26 thereon to move together or apart synchronously, so that the spacing between the two supports 26 on the same rotating rod 24 matches the size of the bottom plate 5 to be tested, and then the bottom plate 5 to be tested is placed on the four supports 26, and the middle part of the bottom plate 5 to be tested is directly opposite to the pressure application end 11 of the force-applying component 1; in order to make the force on the bottom plate 5 to be tested more uniform, a pad 3 extending along the edge of the bottom plate 5 to be tested is also provided between the support 26 and the bottom plate 5 to be tested, and a pad 3 is provided between the pressure application end 11 of the force-applying component 1 and the bottom plate 5 to be tested; during implementation, the force-applying component 1 can A pressure testing machine is used, and the pressure-applying end 11 is the upper pressure plate of the pressure testing machine. The pressure testing machine can drive the upper pressure plate to move vertically. Before testing, the upper pressure plate is much higher than the support 26 so that the bottom plate 5 to be tested can be placed on the support 26. The support plate 21 is fixed on the lower pressure plate (not shown in the figure) of the pressure testing machine. The support 26 can adopt a knife-edge support and a roller support. The driving mechanism can adopt a servo motor. In this embodiment, in order to reduce costs and reduce the weight of the support assembly, the driving mechanism adopts a hand crank 4. In order to facilitate the replacement of the support 26 to meet more testing requirements and improve the practicality of the support assembly, the support 26 is detachably connected to the base 25 by bolts.

[0022] In the bearing capacity detection structure for the bottom plate of the assembly box described in the utility model, the two supports 26 in the same direction are respectively located on the two bases 25 on the same rotating rod 24, and the two bases 25 are respectively threadedly connected to the two sections of threads of the rotating rod 24 with opposite rotation directions. When the driving mechanism drives the rotating rod 24 to rotate, it can not only drive the two bases 25 on the rotating rod 24 and the supports 26 thereon to move together or apart synchronously, so that the distance between the supports 26 is adapted to the size of the bottom plate 5 to be tested, but also keep the distance between the two supports 26 and the central rotating seat 22 in the same direction equal, so as to avoid the situation that the detection failure or the large deviation of the detection result occurs due to the uneven distribution of the supporting force on the bottom plate 5 to be tested; the bearing capacity detection structure is more flexible in adjusting the spacing of the supports 26 and is simple to operate, and is suitable for the detection of bottom plates of various sizes and specifications, which can effectively solve the problem of poor flexibility of the bearing capacity detection structure for the bottom plate of the assembly box, and achieve the effect of reducing the detection cost and improving the detection accuracy.

[0023] See also Figure 2 and Figure 3 , a positioning plate 251 is also vertically provided at the upper end of the base 25, and the positioning plate 251 is higher than the support 26 and is located on the side of the support 26 away from the central rotating seat 22. One side of the positioning plate 251 faces the central rotating seat 22 and is connected and covered with an elastic baffle 252; in this way, after the positions of each support 26 are adjusted according to the size of the bottom plate 5 to be tested, each positioning plate 251 surrounds an unclosed frame that matches the size of the bottom plate 5 to be tested, and plays a positioning role in the placement of the bottom plate 5 to be tested, so that when the bottom plate 5 to be tested is placed in the unclosed frame and abuts against each support 26, the middle part of the bottom plate 5 to be tested is directly opposite to the pressure application end 11 of the force-applying component 1, and no further adjustment is required, which is conducive to simplifying the detection operation and improving the accuracy of the detection; a layer of elastic baffle 252 that can undergo elastic deformation is arranged on the inner side of the positioning plate 251 to ensure that while providing a positioning effect through the positioning plate 251, it will not interfere with the upward warping of the four sides of the bottom plate 5 to be tested during the detection process, thereby avoiding affecting the accuracy of the detection.

[0024] See also Figure 1 and Figure 3, a displacement sensor 27 with a detection end facing upward is provided at the upper end of the central rotating seat 22, and an L-shaped bracket 28 including a vertical rod and a horizontal rod is provided on the positioning plate 251, the L-shaped bracket 28 is rotatably connected to the positioning plate 251 with the vertical rod as the rotating axis, and the horizontal rod faces the central rotating seat 22 and is connected to the displacement sensor 27 with a detection end facing downward; in this way, the displacement sensor 27 on the central rotating seat 22 obtains the deformation amount of the middle part of the bottom plate 5 to be tested, and the displacement sensor 27 on the L-shaped bracket 28 obtains the deformation amount of the four sides of the bottom plate 5 to be tested, so as to cooperate with the force-applying component 1 to more accurately measure the bearing performance of the bottom plate 5 to be tested; the displacement sensors 27 corresponding to the four sides of the bottom plate 5 to be tested are installed on the L-shaped bracket 28, and the L-shaped bracket 28 is rotatably connected to the positioning plate 251 through the vertical rod, and the L-shaped bracket 28 can be rotated so that the L-shaped bracket 28 and the displacement sensor 27 thereon face outward, so as to put the bottom plate 5 to be tested.

[0025] See also Figure 2 and Figure 3 A slide groove 211 is respectively provided between the central rotating seat 22 and each peripheral rotating seat 23 on the support plate 21. The length direction of the slide groove 211 corresponds to the axial direction of the upper rotating rod 24. A slider 253 is formed on the lower end of the base 25 to match and slide with the lower slide groove 211. In this way, the central rotating seat 22 slides and rotates with the slide groove 211 on the support plate 21 through the slider 253, so that the rotating rod 24 drives the base 25 to move more stably.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit the technical solution. Ordinary technicians in this field should understand that those modifications or equivalent replacements of the technical solution of the utility model without departing from the purpose and scope of the technical solution of the utility model should be included in the scope of the claims of the utility model.

Claims

1. A bearing capacity detection structure for an assembly box bottom plate, characterized in that: The invention comprises a force-applying component and a supporting component, wherein the supporting component comprises a supporting plate, a central rotating seat and four peripheral rotating seats are provided on the supporting plate, two rotating rods which penetrate the central rotating seat transversely and are perpendicular to each other are rotatably connected to the central rotating seat, the four peripheral rotating seats are arranged around the central rotating seat and correspond one to one to the positions of the ends of the rotating rods, the ends of the rotating rods are rotatably connected to the corresponding peripheral rotating seats, one end of the rotating rods penetrates to the outside of the corresponding peripheral rotating seat and is connected to a driving mechanism; the rotating rod has a thread on the rod section between the central rotating seat and the peripheral rotating seat, and the threads of the same rotating rod on both sides of the central rotating seat have opposite rotation directions, the rotating rod is respectively threadedly connected to a base on both sides of the central rotating seat, the lower end of the base is slidably matched with the supporting plate, the upper end of the base is detachably connected to a support, and the two supports on the same rotating rod are at an equal distance from the central rotating seat; the force-applying component is arranged above the supporting component, and the pressure acting end of the force-applying component is vertically opposite to the central rotating seat.

2. A bearing capacity detection structure for a bottom plate of an assembly box according to claim 1, characterized in that: A positioning plate is also vertically arranged at the upper end of the base. The positioning plate is higher than the support and is located at a side of the support away from the central rotating seat. One side of the positioning plate faces the central rotating seat and is connected and covered with an elastic baffle.

3. A bearing capacity detection structure for a bottom plate of an assembly box according to claim 2, characterized in that: The upper end of the central rotating seat is provided with a displacement sensor with the detection end facing upward, and the positioning plate is provided with an L-shaped bracket including a vertical rod and a horizontal rod. The L-shaped bracket is rotatably connected to the positioning plate with the vertical rod as the rotating axis, and the horizontal rod faces the central rotating seat and is connected to the displacement sensor with the detection end facing downward.

4. The bearing capacity detection structure for the bottom plate of an assembly box according to claim 1, characterized in that: Slide grooves are respectively provided between the central rotating seat and each peripheral rotating seat on the support plate. The length direction of the slide grooves corresponds to the axial direction of the upper rotating rod. A slider is formed on the lower end of the base to match and slide with the lower slide groove.

5. The bearing capacity detection structure for the bottom plate of an assembly box according to claim 1, characterized in that: The driving mechanism is a hand crank.

6. The bearing capacity detection structure for the bottom plate of an assembly box according to claim 1, characterized in that: The support is detachably connected to the base by bolts.

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