Building material bending strength detection device

Abstract

The utility model belongs to the field of building material detection, and discloses a building material bending strength detection device which comprises a detection table, a placing plate and a fixing mechanism, the fixing mechanism comprises a fixing frame, a rotating shaft, a guide rod and a reset spring, a sliding hole is formed in the side wall of the fixing frame, the guide rod is fixed in the sliding hole, and the rotating shaft is rotationally installed on the placing plate. The placing plate is located on the inner side of the fixing frame, the end of the rotating shaft extends into the sliding hole, the guide rod is slidably inserted into the rotating shaft, and the guide rod is sleeved with the reset spring; and the pressure mechanism is mounted on the detection table. Through the insertion of the rotating shaft and the guide rod, the rotating shaft can slide relative to the guide rod, that is, the fixing frame can press and limit to-be-tested building materials with different thicknesses, and the rotating shaft is rotatably connected with the placing plate, so that when the to-be-tested materials are pressed to be bent, the to-be-tested materials can be fixed. The end part of the to-be-detected material can drive the fixing frame to rotate synchronously and the fixing frame is far away from the placing plate by compressing the reset spring, so that the deformation of the to-be-detected material is abdicated, and the detection result is more accurate.

Description

Technical Field

[0001] This utility model belongs to the technical field of building material testing devices, specifically relating to a building material bending strength testing device. Background Technology

[0002] Building materials refer to the materials used in construction projects. Because some building materials need to bear the responsibility of load-bearing, connecting, and partitioning, these building materials need to have a certain strength, including bending strength. In order to ensure the construction strength of the construction project, relevant tests need to be carried out on the building materials.

[0003] In related prior art, such as Chinese Patent No. CN222013837U, a metal material bending detection device is disclosed, including a worktable. Both ends of the worktable are fixedly connected to base plates. Two sliding rods are fixedly connected to the opposite surfaces of the two base plates. Two movable plates are slidably connected to the outer surfaces of the two sliding rods. A fixing mechanism is provided on the top of each movable plate. The fixing mechanism includes a fixing clamp plate. A screw base is fixedly connected to the top of the movable plate. A screw is rotatably connected inside the screw base. The movable clamp plate is threadedly connected to the outer surface of the screw. By rotating the screw with a knob, the movable clamp plate tightly adheres to the metal plate. Releasing the knob then fixes the material. The position of the two movable plates can be adjusted to fix materials of different lengths. The cooperation between the clamp plate and the anti-slip layer effectively fixes the metal material, improving the practicality of the device.

[0004] However, in actual use, the bending of the material under test is a deformation process of internal compression and external tension at the pressure point, while the uncompressed part only rotates around the pressure point without deformation. In the above scheme, the two ends of the material under test are clamped by the fixing mechanism, so the material under test cannot rotate freely. Therefore, when the middle of the material under test is subjected to pressure and bending, the pressure in the middle bends the material under test, and at the same time, the pressure and the clamping force at the end will pull each other, which will cause the end of the material under test to be stretched. That is, during the process of the pressure mechanism pressing down, it is subjected to both bending force and tensile force, which leads to the inaccuracy of the final bending strength test result, which is not conducive to practical use. Utility Model Content

[0005] The present invention aims to provide a building material bending strength testing device to solve the problem of inaccurate test results of existing testing institutions mentioned above.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a building material bending strength testing device, comprising...

[0007] The testing platform has a clearance groove on its top surface;

[0008] The placement plate consists of two pieces symmetrically arranged around the clearance groove;

[0009] The fixing mechanism includes a fixing frame, a rotating shaft, a guide rod, and a return spring. The fixing frame has an inverted U-shaped cross-section. A sliding hole is provided on the side wall of the fixing frame. The guide rod is fixed in the sliding hole. The rotating shaft is rotatably mounted on the placement plate. The placement plate is located inside the fixing frame, and the end of the rotating shaft extends into the sliding hole. The guide rod is slidably inserted into the rotating shaft. The return spring is sleeved on the guide rod and is located on the side of the rotating shaft away from the top surface of the testing table.

[0010] Pressure mechanism, installed on the testing platform.

[0011] The principle and effects of this technical solution:

[0012] 1. By inserting the rotating shaft and guide rod, the rotating shaft can slide relative to the guide rod, meaning the guide rod and the entire fixing frame can slide relative to the rotating shaft. This increases the distance between the inner top surface of the fixing frame and the top surface of the placement plate, allowing the fixing frame to press and limit the building materials of different thicknesses. By rotating the rotating shaft to the placement plate, when the material under test is bent under pressure, the end of the material can drive the fixing frame to rotate synchronously, and the compression return spring can move the fixing frame away from the placement plate, thus allowing room for the deformation of the material under test. Through this mechanism, the fixing mechanism can limit the building materials under test throughout the entire testing process without affecting the test results of the pressure mechanism, resulting in more accurate test results.

[0013] 2. By setting up two placement plates and a pressure mechanism, the material to be tested can be bent and deformed by placing both ends on the placement plates and applying pressure in the middle. At the same time, the bending strength is detected by the pressure mechanism, and the clearance groove provides deformation space for the deformation of the material to be tested.

[0014] The present invention is further configured to include a limiting component, which includes a limiting shaft and a limiting plate. Two limiting plates are symmetrically installed on the limiting shaft, and the ends of the two limiting plates are respectively hinged to the placement plates on both sides. The limiting plates are located in the clearance groove.

[0015] The principle and effect of this technical solution: By setting the limiting plate and the limiting shaft, the bottom gap between the two placement plates can be filled, while limiting the maximum bending degree of the material to be tested.

[0016] The present invention is further configured to include a control mechanism, which includes a control disc, a bidirectional screw, a control block, and a control rod. The bidirectional screw is rotatably installed in the relief groove, and the end of the bidirectional screw extends to the outside of the detection table and is fixed to the control disc. The control rod is hinged to the side of the limiting plate away from the pressure mechanism, and the control block is hinged to the other end of the control rod. The control block is threaded onto the bidirectional screw, and the control block slides against the relief groove. The placement plate slides against the detection table.

[0017] The principle and effect of this technical solution: The control block is threadedly fitted with a bidirectional screw, and the control block abuts against the clearance groove. Thus, the rotation of the bidirectional screw can only drive the control block to move horizontally. Because the placement plate and the testing table slide together, the end height of the limiting plate remains unchanged and can only move horizontally. This forms a crank-slider structure between the placement plate, the limiting plate, the control rod, and the control block. By controlling the position of the control block, the control rod, the limiting plate, and the placement plate can be moved synchronously. That is, the angle between the two limiting plates can be changed through the control disc, thereby changing the bending angle of the building material to be tested.

[0018] The present invention is further configured such that: a guide block is fixed on the side wall of the placement plate, a guide groove is provided on the side wall of the relief groove, the guide block is slidably fitted in the guide groove, and the width of the placement plate is smaller than the width of the relief groove.

[0019] The principle and effect of this technical solution: By setting the guide block and guide groove, the placement plate can only move horizontally. The guide groove limits and guides the guide block, and the width of the placement plate is less than the width of the relief groove, so that the side wall of the fixing frame can rotate within the relief groove.

[0020] The present invention is further configured such that: a guide groove is provided on the side wall of the relief groove, and the limiting shaft is slidably fitted in the guide groove.

[0021] The principle and effect of this technical solution: The guide groove ensures that the position of the limiting shaft is always in the middle of the two limiting plates, thereby making the operation of the limiting plates more precise.

[0022] The present invention is further configured such that: the pressure mechanism includes a mounting frame, a hydraulic cylinder and a bending head, the mounting frame is fixed on the testing platform, the hydraulic cylinder is mounted on the top of the mounting frame, and the bending head is mounted on the movable end of the hydraulic cylinder, the bending head corresponding to the middle of the relief groove.

[0023] The principle and effect of this technical solution: By driving the bending head to move through the hydraulic cylinder, the bending head can perform bending strength detection on the test material. The pressure sensor built into the hydraulic cylinder can detect the force on the building material under test during bending deformation.

[0024] The present invention is further configured to include a limiting bolt, a mounting base fixed to the movable end of the hydraulic cylinder, a bending head inserted into the mounting base, the end of the limiting bolt passing through the mounting base and the bending head, and a limiting nut threaded onto the limiting bolt.

[0025] The principle and effect of this technical solution: By setting up the mounting base, limit bolts and limit nuts, the bending pressure head can be replaced by disassembling and assembling the limit bolts and limit nuts, thereby adapting to bending deformation at different angles. Attached Figure Description

[0026] Figure 1 This is the front view of the present invention;

[0027] Figure 2 for Figure 1 Enlarged view of point A;

[0028] Figure 3 for Figure 1 Axonometric structural diagram of the upper limit plate of the middle detection platform when it is in a horizontal state;

[0029] Figure 4 for Figure 3 Structural diagram of the area where the plate is placed;

[0030] Figure 5 for Figure 4 Enlarged structural diagram of the central fixed bracket. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0032] The reference numerals in the accompanying drawings include:

[0033] 101. Testing table; 102. Clearance groove; 103. Guide groove; 104. Guide groove;

[0034] 201. Placement plate; 202. Guide block;

[0035] 301. Fixing bracket; 302. Sliding hole; 303. Rotating shaft; 304. Guide rod; 305. Return spring;

[0036] 401. Limiting shaft; 402. Limiting plate;

[0037] 501. Control panel; 502. Bidirectional screw; 503. Control block; 504. Control lever;

[0038] 601. Mounting bracket; 602. Hydraulic cylinder; 603. Bending head; 604. Mounting base; 605. Limit bolt; 606. Limit nut.

[0039] Example:

[0040] As attached Figure 1-5As shown, this utility model discloses a building material bending strength testing device, including a testing platform 101, a placement plate 201, a fixing mechanism, a pressure mechanism, a control mechanism, and a limiting component. The top surface of the testing platform 101 has a clearance groove 102; guide grooves 104 are formed at both ends of the sidewall of the clearance groove 102, and a guide sliding groove 103 is formed in the middle of the sidewall of the clearance groove 102. Two placement plates 201 are symmetrically arranged on both sides of the clearance groove 102. Guide blocks 202 are fixed to the sidewall of the placement plates 201, and the guide blocks 202 slide within the guide grooves 104. The width d of the placement plates 201 is smaller than the width D of the clearance groove 102. Figure 3 As shown.

[0041] The limiting assembly includes a limiting shaft 401 and a limiting plate 402. Two limiting plates 402 are symmetrically mounted on the limiting shaft 401, and the ends of the two limiting plates 402 are respectively hinged to the placement plates 201 on both sides. The limiting plates 402 are located in the relief groove 102, and the limiting shaft 401 is slidably fitted in the guide groove 103.

[0042] The fixing mechanism includes a fixing frame 301, a rotating shaft 303, a guide rod 304, and a return spring 305. The fixing frame 301 has an inverted U-shaped cross-section. A sliding hole 302 is provided on the side wall of the fixing frame 301. The guide rod 304 is fixed in the sliding hole 302. The rotating shaft 303 is rotatably mounted on the placement plate 201, which is located inside the fixing frame 301. The end of the rotating shaft 303 extends into the sliding hole 302. The guide rod 304 is slidably inserted into the rotating shaft 303. The return spring 305 is sleeved on the guide rod 304 and is located on the side of the rotating shaft 303 away from the top surface of the detection table 101. The end of the fixing frame 301 is located in the gap between the placement plate 201 and the side wall of the clearance groove 102.

[0043] The control mechanism includes a control panel 501, a bidirectional screw 502, a control block 503, and a control rod 504. The bidirectional screw 502 is rotatably mounted in the relief groove 102. The end of the bidirectional screw 502 extends to the outside of the detection table 101 and is fixed to the control panel 501. The control rod 504 is hinged to the side of the limiting plate 402 away from the pressure mechanism. The control block 503 is hinged to the other end of the control rod 504. The control block 503 is threaded onto the bidirectional screw 502. The control block 503 slides against the relief groove 102. The placement plate 201 slides against the detection table 101.

[0044] The pressure mechanism includes a mounting bracket 601, a hydraulic cylinder 602, and a bending head 603. The mounting bracket 601 is fixed on the testing table 101. The hydraulic cylinder 602 is mounted on the top of the mounting bracket 601. The bending head 603 is mounted on the movable end of the hydraulic cylinder 602. The mechanism also includes a limit bolt 605. The movable end of the hydraulic cylinder 602 is fixed to a mounting seat 604. The bending head 603 is inserted into the mounting seat 604. The end of the limit bolt 605 passes through the mounting seat 604 and the bending head 603. A limit nut 606 is threaded onto the limit bolt 605.

[0045] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A device for detecting the bending strength of a building material, characterized by: The utility model provides a kind of detection platform, including Detection platform (101), top surface is provided with let slot (102); Placement plate (201), about the let slot (102) symmetrically provided with two pieces; Fixing mechanism, including fixed frame (301), pivot (303), guide rod (304) and reset spring (305), the section of the fixed frame (301) is inverted U shape, the side wall of the fixed frame (301) is provided with sliding hole (302), the guide rod (304) is fixed in the sliding hole (302), the pivot (303) is rotatably installed on the placement plate (201), the placement plate (201) is located in the inside of the fixed frame (301), and the end of the pivot (303) extends to the sliding hole (302), the guide rod (304) is slidably inserted on the pivot (303), the reset spring (305) is sleeved on the guide rod (304), and is located on the side of the pivot (303) away from the top surface of the detection platform (101); Pressure mechanism, installed on the detection platform (101).

2. The apparatus for detecting the bending strength of a building material according to claim 1, wherein: Further including limiting component, the limiting component includes limiting shaft (401) and limiting plate (402), two limiting plates (402) are symmetrically installed on the limiting shaft (401), and the ends of two limiting plates (402) are respectively hinged with two sides placement plate (201), and the limiting plate (402) is located in the let slot (102).

3. The apparatus for detecting the bending strength of a building material according to claim 2, wherein: Further including control mechanism, the control mechanism includes control disc (501), two-way screw rod (502), control block (503) and control rod (504), the two-way screw rod (502) is rotatably installed in the let slot (102), the end of the two-way screw rod (502) extends to the outside of the detection platform (101), and is fixed with the control disc (501), the side of the limiting plate (402) away from the pressure mechanism is hinged with the control rod (504), the other end of the control rod (504) is hinged with the control block (503), the control block (503) is threadedly sleeved on the two-way screw rod (502), the control block (503) is slidably connected with the let slot (102), and the placement plate (201) is slidably connected with the detection platform (101).

4. The apparatus for testing the bending strength of a building material according to claim 3, wherein: The side wall of the placement plate (201) is fixed with guide block (202), the side wall of the let slot (102) is provided with guide slot (104), the guide block (202) is slidably connected in the guide slot (104), and the width of the placement plate (201) is less than the width of the let slot (102).

5. The apparatus for testing the bending strength of a building material according to claim 3, wherein: The side wall of the let slot (102) is provided with guide sliding groove (103), and the limiting shaft (401) is slidably connected in the guide sliding groove (103).

6. The apparatus for testing the bending strength of a building material according to claim 1, wherein: The pressure mechanism comprises a mounting frame (601), a hydraulic cylinder (602) and a bending pressure head (603), the mounting frame (601) is fixed on the detection table (101), the hydraulic cylinder (602) is mounted on the top of the mounting frame (601), the movable end of the hydraulic cylinder (602) is provided with the bending pressure head (603), and the bending pressure head (603) corresponds to the middle part of the accommodation groove (102).

7. The apparatus for detecting the bending strength of a building material according to claim 6, wherein: Further comprising a limiting bolt (605), the movable end of the hydraulic cylinder (602) is fixed with a mounting seat (604), the bending pressure head (603) is inserted into the mounting seat (604), the end of the limiting bolt (605) penetrates through the mounting seat (604) and the bending pressure head (603), and the limiting bolt (605) is threadedly sleeved with a limiting nut (606).

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