Metal net mechanical property test bench capable of flexibly changing loading area

Abstract

The invention belongs to the technical field of loading experiments, and particularly relates to a metal net mechanical property test bench capable of flexibly changing a loading area. When the metal net mechanical property test bench is used, an adjusting assembly is adjusted to a preset position, then a metal net is hung above a loading cabinet through a hanging assembly, the position of the loading cabinet is adjusted, and the loading area can be flexibly changed; the middle of the metal net is moved to the position under the loading mechanism, the loading cabinet is fixed through the limiting assembly, the metal net is pressurized through the loading mechanism, and data are collected through the first data collection mechanism and the second data collection mechanism. And processing data acquired by the first data acquisition mechanism and the second data acquisition mechanism through a data processing mechanism to obtain performance parameters of the metal net. According to the invention, the metal nets with different sizes and different types can be tested, the test bench does not need to be replaced / reset, and the test bench is convenient to use.

Description

Technical Field

[0001] The invention belongs to the technical field of loading experiments, and in particular relates to a metal mesh mechanical property test bench capable of flexibly changing the loading area. Background Art

[0002] As an important surface protection component in the anchor support system, the metal mesh converts the point support of anchor rods and cables into surface support, which is an important guarantee for ensuring the stability of the surrounding rock of the tunnel.

[0003] The existing metal mesh mechanical properties test benches can be divided into two types based on the loading method: "compression" and "tensile". The "compression" test bench of the metal mesh is represented by the metal mesh static load test bench of the Curtin School of Mines in Australia, and the "tensile" test bench of the metal mesh is represented by the simple metal mesh test device of the American Occupational Safety and Health Association. These two types of test benches have fixed structures and can only test metal meshes of one size and type. If you want to test metal meshes of different sizes and types, you can only replace or redesign the test bench, which is very inconvenient for scientific research experiments.

[0004] Therefore, a metal mesh mechanical properties test bench with flexible loading area is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a metal mesh mechanical property test bench with flexible changeable loading area to solve the above problems.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] A metal mesh mechanical properties test bench with flexible load area changeability, comprising:

[0008] Workbench;

[0009] A loading cabinet is arranged on the top surface of the workbench, and the loading cabinet moves along the width direction of the workbench;

[0010] A limit assembly, disposed between the workbench and the loading cabinet, for limiting the movement of the loading cabinet;

[0011] An adjustment component is arranged in the loading cabinet, and the adjustment component moves along the length direction of the loading cabinet;

[0012] A plurality of hanging components, arranged on the loading cabinet and the adjusting component, for fixing the adjusting component to the loading cabinet and fixing the metal mesh;

[0013] A loading mechanism is arranged above the workbench and corresponds to the loading cabinet above and below;

[0014] A first data acquisition mechanism, arranged on the loading mechanism;

[0015] A second data acquisition mechanism is arranged on the workbench, and the second data acquisition mechanism and the loading mechanism are arranged correspondingly up and down;

[0016] The data processing mechanism is used to process the data collected by the first data collection mechanism and the second data collection mechanism.

[0017] In the metal mesh mechanical properties test bench with flexible load-changing area of ​​the present invention, the adjustment component comprises:

[0018] Two slide grooves are provided on two opposite inner side walls of the loading cabinet, the openings of the two slide grooves are arranged opposite to each other, and the two slide grooves are arranged in parallel and symmetrically;

[0019] The two cross beams are arranged correspondingly up and down, the two cross beams are connected by a hydraulic rod, and the two ends of the cross beam are respectively arranged in the two slide grooves.

[0020] In the metal mesh mechanical properties test bench with flexible load-changing area of ​​the present invention, the hanging assembly comprises:

[0021] A bolt is threadedly connected in the first threaded hole and / or the second threaded hole, a plurality of the first threaded holes are provided, and the plurality of the first threaded holes are all opened at the top of the loading cabinet, and the plurality of the first threaded holes are respectively opened on two opposite sides of the loading cabinet and are all connected to the slide groove, a plurality of the second threaded holes are provided, and the plurality of the second threaded holes are only opened on the upper beam, and the plurality of the second threaded holes are arranged at equal intervals along the length direction of the beam, and the second threaded holes at both ends extend into the slide groove and are arranged corresponding to the first threaded holes up and down;

[0022] A hanging buckle is fixedly connected to the top end of the bolt and is used for hanging the metal mesh.

[0023] In the metal mesh mechanical property test bench with flexibly changeable loading area of ​​the present invention, two ends of the loading cabinet are slidably connected with slide rails respectively, the slide rails are arranged along the width direction of the workbench, and the slide rails are fixed to the workbench.

[0024] In the metal mesh mechanical property test bench with flexible load-changing area of ​​the present invention, the position-limiting assembly comprises:

[0025] Two cavities are respectively opened at two ends of the loading cabinet;

[0026] A gear, rotatably connected in the cavity via a rotating shaft;

[0027] A rack meshing with the gear, the rack being fixedly connected to the slide rail, and the rack being arranged along the length direction of the slide rail;

[0028] A limiting tooth block is vertically slidably connected in the cavity, and the limiting tooth block is detachably connected to the gear;

[0029] A screw rod, the bottom end of which penetrates into the cavity, the bottom end of which is rotatably connected to the limit tooth block via a connecting piece, and the top end of which passes out of the cavity and is fixedly connected to a turning handle;

[0030] A nut is fixedly connected to the top of the loading cabinet, and the nut is threadedly connected to the screw rod.

[0031] In the metal mesh mechanical property test bench with flexible load-changing area of ​​the present invention, the loading mechanism comprises:

[0032] A U-shaped frame, fixedly connected to the top surface of the workbench, with the opening of the U-shaped frame arranged downward;

[0033] A hydraulic press is fixedly connected to the inner top wall of the U-shaped frame, and the output end of the hydraulic press is arranged downward;

[0034] The loading head is fixedly connected to the output end of the hydraulic press.

[0035] In the metal mesh mechanical properties test bench with flexible load-changing area of ​​the present invention, the first data acquisition mechanism comprises:

[0036] A displacement sensor is arranged between the loading head and the output end of the hydraulic press;

[0037] The pressure sensor is arranged between the loading head and the displacement sensor.

[0038] In the metal mesh mechanical property test bench with flexible load-changing area of ​​the present invention, the second data acquisition mechanism comprises:

[0039] The 3D scanner is fixedly connected to the workbench, and the 3D scanner and the loading head are arranged correspondingly up and down.

[0040] Compared with the prior art, the present invention has the following advantages and technical effects:

[0041] When the present invention is in use, firstly, the adjustment component is adjusted to a preset position, then the metal mesh is mounted above the loading cabinet through the hanging component, the position of the loading cabinet is adjusted, the middle of the metal mesh is moved to directly below the loading mechanism, the loading cabinet is fixed by the limiting component, the metal mesh is pressurized by the loading mechanism, data is collected by the first data acquisition mechanism and the second data acquisition mechanism, and the data collected by the first data acquisition mechanism and the second data acquisition mechanism are processed by the data processing mechanism to obtain performance parameters of the metal mesh.

[0042] The present invention can realize the testing of metal meshes of different sizes and types without the need to replace / reset the test bench, and is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor:

[0044] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0045] Figure 2 It is a left side view of the present invention;

[0046] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0047] Among them, 1. load-bearing plate; 2. support leg; 3. U-shaped frame; 4. hydraulic press; 5. loading cabinet; 6. hanging buckle; 7. bolt; 8. slide; 9. hydraulic rod; 10. beam; 11. displacement sensor; 12. pressure sensor; 13. loading head; 14. 3D scanner; 15. cavity; 16. limit gear block; 17. connecting piece; 18. screw; 19. nut; 20. handle; 21. gear; 22. rotating shaft; 23. slide rail; 24. main machine; 26. rack. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0050] Reference Figures 1 to 3 The present invention discloses a metal mesh mechanical property test bench with a flexibly changeable loading area, comprising:

[0051] Workbench;

[0052] A loading cabinet 5 is arranged on the top surface of the workbench, and the loading cabinet 5 moves along the width direction of the workbench;

[0053] A limit assembly, arranged between the workbench and the loading cabinet 5, for limiting the movement of the loading cabinet 5;

[0054] An adjusting component is arranged in the loading cabinet 5, and the adjusting component moves along the length direction of the loading cabinet 5;

[0055] A plurality of hanging components are arranged on the loading cabinet 5 and the adjusting component, and are used to fix the adjusting component to the loading cabinet 5 and the metal mesh;

[0056] The loading mechanism is arranged above the workbench and corresponds to the loading cabinet 5 above and below;

[0057] A first data acquisition mechanism is arranged on the loading mechanism;

[0058] A second data acquisition mechanism is arranged on the workbench, and the second data acquisition mechanism and the loading mechanism are arranged correspondingly up and down;

[0059] The data processing mechanism is used to process the data collected by the first data collection mechanism and the second data collection mechanism.

[0060] When the present invention is in use, first adjust the adjustment component to a preset position, then mount the metal mesh on top of the loading cabinet 5 through the hanging component, adjust the position of the loading cabinet 5, move the middle of the metal mesh to directly below the loading mechanism, fix the loading cabinet 5 through the limit assembly, pressurize the metal mesh through the loading mechanism, collect data through the first data acquisition mechanism and the second data acquisition mechanism, and process the data collected by the first data acquisition mechanism and the second data acquisition mechanism through the data processing mechanism to obtain the performance parameters of the metal mesh.

[0061] The present invention can realize the testing of metal meshes of different sizes and types without the need to replace / reset the test bench, and is convenient to use.

[0062] The workbench includes a carrying plate 1 , and vertically arranged legs 2 are fixedly connected to the four corners of the bottom surface of the carrying plate 1 . The loading mechanism and the loading cabinet 5 are both located on the top surface of the carrying plate 1 .

[0063] The data processing mechanism includes a host computer 24, and the host computer 24 is connected to a display for data processing and displaying processing results.

[0064] In an optional solution, the adjustment component includes:

[0065] Two slide grooves 8 are provided on two opposite inner side walls of the loading cabinet 5, the openings of the two slide grooves 8 are arranged opposite to each other, and the two slide grooves 8 are arranged parallel and symmetrically;

[0066] The two cross beams 10 are arranged correspondingly up and down, and are connected by a hydraulic rod 9 . The two ends of the cross beam 10 are respectively arranged in the two slide grooves 8 .

[0067] The crossbeam 10 is slidably connected in the slide groove 8 .

[0068] In an optional solution, the mounting assembly includes:

[0069] Bolt 7, threadedly connected in the first threaded hole and / or the second threaded hole, multiple first threaded holes are provided, multiple first threaded holes are opened at the top of the loading cabinet 5, multiple first threaded holes are respectively opened on two opposite sides of the loading cabinet 5 and are connected to the slide groove 8, multiple second threaded holes are provided, multiple second threaded holes are only opened on the upper beam 10, multiple second threaded holes are arranged at equal intervals along the length direction of the beam 10, and the second threaded holes at both ends extend into the slide groove 8 and are arranged corresponding to the first threaded holes up and down;

[0070] The hanging buckle 6 is fixedly connected to the top end of the bolt 7 and is used for hanging the metal mesh.

[0071] When moving the crossbeam 10, first move the crossbeam 10 located at the top downward to facilitate the movement of the crossbeam 10. When it moves to the predetermined position, the hydraulic rod 9 is raised, and the crossbeam 10 located at the top is moved upward. The first threaded hole and the second threaded hole are connected at the same time by the bolt 7. At this time, the bolt 7 fixes the crossbeam 10.

[0072] A hanging buckle 6 is fixedly connected to the bolt 7 for hanging the metal mesh. Meanwhile, the bolt 7 can also connect the first threaded hole and the second threaded hole at the same time. At this time, the bolt 7 fixes the crossbeam 10.

[0073] In an optional solution, two ends of the loading cabinet 5 are slidably connected with slide rails 23 , respectively. The slide rails 23 are arranged along the width direction of the workbench, and the slide rails 23 are fixed to the workbench.

[0074] The loading cabinet 5 moves along the slide rail 23 .

[0075] In an optional solution, the limit assembly includes:

[0076] Two cavities 15 are respectively opened at two ends of the loading cabinet 5;

[0077] The gear 21 is rotatably connected to the cavity 15 via the rotating shaft 22;

[0078] The rack 26 is meshed with the gear 21, the rack 26 is fixedly connected to the slide rail 23, and the rack 26 is arranged along the length direction of the slide rail 23;

[0079] The limiting tooth block 16 is vertically slidably connected in the cavity 15, and the limiting tooth block 16 is detachably connected to the gear 21;

[0080] The bottom end of the screw rod 18 penetrates into the cavity 15, and the bottom end of the screw rod 18 is rotatably connected to the limit tooth block 16 through the connecting piece 17, and the top end of the screw rod 18 passes through the cavity 15 and is fixedly connected to the turning handle 20;

[0081] The nut 19 is fixedly connected to the top of the loading cabinet 5 , and the nut 19 is threadedly connected to the screw rod 18 .

[0082] When the loading cabinet 5 needs to be moved, the handle 20 is turned, and the handle 20 drives the screw rod 18 to rotate and move upward. At this time, the limit gear block 16 is separated from the gear 21, and the loading cabinet 5 moves along the slide rail 23. At this time, the gear 21 rotates;

[0083] When the loading cabinet 5 needs to be fixed, the handle 20 is rotated in the opposite direction, and the handle 20 drives the screw rod 18 to rotate and move downward, and the limit gear block 16 is engaged with the gear 21 to fix the gear 21. At this time, the loading cabinet 5 is fixed.

[0084] In an optional solution, the loading mechanism includes:

[0085] A U-shaped frame 3 is fixedly connected to the top surface of the workbench, and the opening of the U-shaped frame 3 is downwardly arranged;

[0086] The hydraulic press 4 is fixedly connected to the inner top wall of the U-shaped frame 3, and the output end of the hydraulic press 4 is arranged downward;

[0087] The loading head 13 is fixedly connected to the output end of the hydraulic press 4 .

[0088] The hydraulic press 4 drives the loading head 13 to move downward to apply pressure to the metal mesh.

[0089] In an optional solution, the first data collection mechanism includes:

[0090] The displacement sensor 11 is arranged between the loading head 13 and the output end of the hydraulic press 4;

[0091] The pressure sensor 12 is disposed between the loading head 13 and the displacement sensor 11 .

[0092] The displacement of the center position of the metal mesh during the test is collected by the displacement sensor 11 , and the load borne by the metal mesh during the test is collected by the pressure sensor 12 , and the data are transmitted to the host 24 .

[0093] In an optional solution, the second data collection mechanism includes:

[0094] The 3D scanner 14 is fixedly connected to the workbench, and the 3D scanner 14 and the loading head 13 are arranged correspondingly up and down.

[0095] The overall deformation of the metal mesh under vertical load is scanned by a 3D scanner 14 .

[0096] The host 24 controls the start and end of the test, converts the voltage signal collected by the sensor into a digital signal for curve fitting, and outputs the test results.

[0097] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0098] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A metal mesh mechanical properties test bench with flexible load area, characterized in that: include: Workbench; A loading cabinet (5) is arranged on the top surface of the workbench, and the loading cabinet (5) moves along the width direction of the workbench; A limit assembly, arranged between the workbench and the loading cabinet (5), and used for limiting the movement of the loading cabinet (5); An adjustment component is arranged in the loading cabinet (5), and the adjustment component moves along the length direction of the loading cabinet (5); A plurality of hanging components, arranged on the loading cabinet (5) and the adjusting component, used for fixing the adjusting component to the loading cabinet (5) and fixing the metal mesh; A loading mechanism is arranged above the workbench and corresponds to the loading cabinet (5) above and below; A first data acquisition mechanism, arranged on the loading mechanism; A second data acquisition mechanism is arranged on the workbench, and the second data acquisition mechanism and the loading mechanism are arranged correspondingly up and down; The data processing mechanism is used to process the data collected by the first data collection mechanism and the second data collection mechanism.

2. A metal mesh mechanical properties test bench with flexible load area change according to claim 1, characterized in that: The adjustment component comprises: Two slide grooves (8) are provided on two opposite inner side walls of the loading cabinet (5), the openings of the two slide grooves (8) are arranged opposite to each other, and the two slide grooves (8) are arranged parallel and symmetrically; The two cross beams (10) are arranged correspondingly up and down, the two cross beams (10) are connected by a hydraulic rod (9), and the two ends of the cross beam (10) are respectively arranged in the two slide grooves (8).

3. A metal mesh mechanical properties test bench with flexible load area change according to claim 2, characterized in that: The mounting assembly comprises: A bolt (7) is threadedly connected in the first threaded hole and / or the second threaded hole, wherein a plurality of the first threaded holes are provided, and the plurality of the first threaded holes are all opened at the top of the loading cabinet (5), and the plurality of the first threaded holes are respectively opened on two opposite sides of the loading cabinet (5) and are all connected to the slide groove (8), and a plurality of the second threaded holes are provided, and the plurality of the second threaded holes are only opened on the upper crossbeam (10), and the plurality of the second threaded holes are arranged at equal intervals along the length direction of the crossbeam (10), and the second threaded holes located at both ends extend into the slide groove (8) and are arranged corresponding to the first threaded holes above and below; The hanging buckle (6) is fixedly connected to the top end of the bolt (7) and is used for hanging the metal mesh.

4. The metal mesh mechanical properties test bench with flexible load area change according to claim 1, characterized in that: Both ends of the loading cabinet (5) are slidably connected to slide rails (23), respectively. The slide rails (23) are arranged along the width direction of the workbench, and the slide rails (23) are fixed to the workbench.

5. The metal mesh mechanical properties test bench with flexible load area change according to claim 4, characterized in that: The limiting component comprises: Two cavities (15) are respectively opened at two ends of the loading cabinet (5); A gear (21) is rotatably connected to the cavity (15) via a rotating shaft (22); A rack (26) meshed with the gear (21), the rack (26) being fixedly connected to the slide rail (23), and the rack (26) being arranged along the length direction of the slide rail (23); A limiting tooth block (16) is vertically slidably connected in the cavity (15), and the limiting tooth block (16) is detachably connected to the gear (21); A screw rod (18), the bottom end of which penetrates into the cavity (15), the bottom end of which is rotatably connected to the limit tooth block (16) via a connecting piece (17), and the top end of which passes out of the cavity (15) and is fixedly connected to a turning handle (20); A nut (19) is fixedly connected to the top of the loading cabinet (5), and the nut (19) is threadedly connected to the screw rod (18).

6. The metal mesh mechanical properties test bench with flexible load area change according to claim 1, characterized in that: The loading mechanism comprises: A U-shaped frame (3) is fixedly connected to the top surface of the workbench, and the opening of the U-shaped frame (3) is arranged downward; A hydraulic press (4) is fixedly connected to the inner top wall of the U-shaped frame (3), and the output end of the hydraulic press (4) is arranged downward; The loading head (13) is fixedly connected to the output end of the hydraulic press (4).

7. The metal mesh mechanical properties test bench with flexible load area change according to claim 6, characterized in that: The first data collection mechanism comprises: A displacement sensor (11) is arranged between the loading head (13) and the output end of the hydraulic press (4); A pressure sensor (12) is arranged between the loading head (13) and the displacement sensor (11).

8. The metal mesh mechanical properties test bench with flexible load area change according to claim 6, characterized in that: The second data collection mechanism comprises: A 3D scanner (14) is fixedly connected to the workbench, and the 3D scanner (14) and the loading head (13) are arranged correspondingly up and down.

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