Composite material shear testing machine

Abstract

The invention relates to the technical field of shear testing machines, in particular to a composite material shear testing machine which comprises a base and a support installed at the top end of the base. The device comprises a support and further comprises a driving device, a testing device, a first hydraulic cylinder, first clamping pieces, a supporting plate and two second hydraulic cylinders, the first hydraulic cylinder is installed at the top end of the support, the two first clamping pieces are installed at the moving end of the first hydraulic cylinder through the driving device, and the driving device is used for driving the two first clamping pieces to move oppositely; the supporting plate and the two first clamping pieces are vertically and oppositely arranged, the supporting plate is installed at the moving ends of the two second hydraulic cylinders, the two second hydraulic cylinders are both installed at the top end of the base, and the testing device is arranged on the base; the positioning operation convenience of the pattern is improved, the complexity of the fixing operation of the pattern by personnel is reduced, and the pattern is subjected to stretching, extruding and twisting tests through the test device, so that the test use limitation is reduced, the multi-purpose effect of one machine is improved, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of shear testing machines, in particular to a composite material shear testing machine. Background Art

[0002] Composite materials have been widely used in aerospace, automotive, construction and other fields due to their excellent mechanical properties and lightweight characteristics. However, these application scenarios often have strict requirements on the shear performance of composite materials. The shear performance of composite materials refers to the ability of the material to resist shear deformation and damage under shear stress. This performance is directly related to the safety and reliability of the material in actual use. Therefore, shear tests on composite materials are required.

[0003] Currently in the existing shear test equipment, such as the patent with authorization announcement number CN217765888U, the utility model provides a rock rotation shear test machine, which relates to the technical field of shear test machines. The rock rotation shear test machine includes a base, a shear head, and a workbench. An L-shaped clamp is rotatably installed on the upper end surface of the base, and an elastic component is arranged at the bottom of the side of the clamp that is horizontal to the base, and a pressure plate is arranged on the surface, and a lifting component is installed on the pressure plate.

[0004] However, during the use of the equipment, it was found that the functionality of the equipment was relatively simple, and it was not convenient to carry out different tests on shearing, twisting, stretching and extrusion of materials, which increased the limitations of its use. In addition, the operational convenience of material positioning was poor, which reduced work efficiency. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a composite material shear testing machine which improves the convenience of sample positioning operation, reduces the complexity of sample fixing operation by personnel, and performs stretching, extrusion and twisting tests on the sample through a test device, thereby reducing the limitations of test use, improving the multi-purpose effect of one machine, and improving work efficiency.

[0006] A composite material shear testing machine of the present invention comprises a base and a bracket, wherein the bracket is mounted on the top of the base; further comprising a driving device, a testing device, a first hydraulic cylinder, a first clamping member, a support plate and two groups of second hydraulic cylinders, wherein the first hydraulic cylinder is mounted on the top of the bracket, the two groups of first clamping members are mounted on the moving end of the first hydraulic cylinder through the driving device, the driving device is used to drive the two groups of first clamping members to move in opposite directions, the support plate and the two groups of first clamping members are arranged opposite to each other up and down, the support plate is mounted on the moving ends of the two groups of second hydraulic cylinders, the two groups of second hydraulic cylinders are both mounted on the top of the base, the testing device is arranged on the base, the testing device is used to fix the composite material sample, and the testing device is used to test the sample in tension, compression and torsion; the sample is placed horizontally on the top of the support plate, and the test results are shown in FIG. The two ends of the sample are clamped and fixed by the test device, and then the two groups of second hydraulic cylinders drive the support plate to move downward to separate the support plate from the sample, and then the first hydraulic cylinder drives the two groups of first clamps to move downward to the two sides of the sample, and the driving device drives the two groups of first clamps to move closer to each other, so that the two groups of first clamps clamp and fix the middle of the sample, and then the first hydraulic cylinder continues to drive the two groups of first clamps to move downward, so that the two groups of first clamps perform shear tests on the sample, thereby improving the convenience of sample positioning operation, reducing the complexity of personnel's sample fixing operation, and performing stretching, extrusion and torsion tests on the sample through the test device, thereby reducing the use limitations of the testing machine, improving the multi-purpose effect of one machine, and improving work efficiency.

[0007] Preferably, the test device comprises a moving device, a power device, two groups of first sliders, two groups of bases, multiple groups of first pressure sensors, two groups of cylinders, two groups of second clamping members, four groups of third hydraulic cylinders and multiple groups of guide columns, the two groups of first sliders are slidably mounted on the moving device, the moving device is used to drive the two groups of first sliders to move towards each other, the two groups of bases are slidably mounted on the top ends of the two groups of first sliders, the multiple groups of first pressure sensors are mounted on the outer side walls of the two groups of first sliders, and the multiple groups of first pressure sensors are respectively in contact with the two sides of the two groups of bases, the two groups of cylinders are respectively rotatably mounted on the two groups of bases by the power device, wherein every two groups of second clamping members are respectively arranged on one group of cylinders in opposite directions, the four groups of third hydraulic cylinders are respectively mounted on the outer side walls of the two groups of cylinders, the four groups of second clamping members are respectively mounted on the moving ends of the four groups of third hydraulic cylinders, the multiple groups of guide columns are respectively slidably mounted on the two groups of cylinders, and the moving ends of the multiple groups of guide columns are respectively connected to the outer side walls of the four groups of second clamping members When the sample is placed on the top of the support plate, the two groups of first sliders are driven to move closer to each other by the moving device, so that the two groups of first sliders drive the four groups of second clamps to move to both sides of the sample, and then the four groups of third hydraulic cylinders are driven to move closer to each other, so that the four groups of second clamps clamp and fix the two ends of the sample, so as to facilitate the shear test of the sample by the two groups of first clamps. After the four groups of second clamps clamp and fix the sample, the two groups of cylinders are driven to rotate in opposite directions by the power device, so that the four groups of cylinders rotate in opposite directions on the two ends of the sample respectively, so that the sample is subjected to a torsion test, and the two groups of first sliders are driven to move away from each other by the moving device, so that the two groups of cylinders perform a tensile test on the sample, and the two groups of first sliders are moved closer to each other, so that the sample is subjected to an extrusion test, thereby reducing the use limitations of the testing machine and improving the test efficiency. By setting multiple groups of first pressure sensors, the convenience of measuring the tensile and extrusion test data of the sample is improved.

[0008] Preferably, the power device includes a rotating device, a supporting seat, two groups of spline sleeves, two groups of spline shafts, two groups of spur gears and two groups of gear rings. The supporting seat is installed on the top of the base, the two groups of spline sleeves are rotatably installed on the supporting seat, and the two groups of spline sleeves rotate in opposite directions through the power of the rotating device, the ends of the two groups of spline shafts are respectively fitted on the two groups of spline sleeves, and the two groups of spline shafts are respectively rotatably installed on the two groups of bases, the two groups of spur gears are respectively installed on the other ends of the two groups of spline shafts, the two groups of gear rings are respectively installed on the outer side walls of the two groups of cylinders, and the two groups of gear rings are respectively meshed with the two groups of spur gears; the two groups of spline sleeves are driven to rotate in opposite directions by the rotating device, so that the two groups of spline sleeves drive the two groups of spline shafts to rotate in opposite directions, thereby making the two groups of spline shafts drive the two groups of spur gears to rotate in opposite directions, and the two groups of spur gears drive the two groups of cylinders to rotate in opposite directions after meshing with the two groups of gear rings, thereby improving the convenience of the testing machine for sample torsion testing.

[0009] Preferably, it also includes two groups of support rods, two groups of limit blocks, two groups of push plates and two groups of springs, the two groups of support rods are slidably mounted on the two groups of cylinders, the two groups of limit blocks are respectively mounted on the ends of the two groups of support rods, the two groups of push plates are respectively rotatably mounted on the outer walls of the two groups of support rods, and the two groups of push plates are arranged opposite to each other, and the two groups of springs are respectively fitted on the outer walls of the two groups of support rods; when the two groups of first sliding blocks drive the two groups of cylinders to move closer to each other, the two groups of cylinders drive the two groups of push plates to move closer to each other, so that the two groups of push plates contact the two ends of the pattern respectively, so that the two groups of push plates push the pattern to the center position, and then the two ends of the pattern are clamped and fixed by the four groups of second clamping members, and the two groups of springs provide elastic support to the two groups of push plates, thereby improving the convenience of the two groups of push plates to push patterns of different lengths in the center, reducing the complexity of personnel's centering positioning operation, and improving the accuracy of the test.

[0010] Preferably, the moving device includes a first guide, a first lead screw, a coupling and a first motor, the first guide is mounted on the top of the base, the first lead screw is rotatably mounted on the inner wall of the first guide, two groups of first sliders are respectively slidably mounted on the first guide, and the two groups of first sliders are respectively screwed on the outer wall of the first lead screw, the coupling is connected to the end of the first lead screw, the first motor is mounted on the outer wall of the first guide, and the output end of the first motor is connected to the coupling; the first motor drives the first lead screw to rotate through the coupling, so that the first lead screw drives the two groups of first sliders to move towards each other, so that the two groups of first sliders drive the two groups of bases to move closer or farther from each other, thereby improving the convenience of tensile and extrusion tests on the samples.

[0011] Preferably, the rotating device includes two groups of first bevel gears, a second bevel gear and a second motor, the two groups of first bevel gears are respectively mounted on the outer side walls of the two groups of spline sleeves, the second motor is mounted on the top of the first guide member, the second bevel gear is mounted on the output end of the second motor, the second bevel gear is meshed with the two groups of first bevel gears, and a torque sensor is arranged between the second bevel gear and the second motor; the second bevel gear is driven to rotate by the second motor, so that the second bevel gear drives the two groups of spline sleeves to rotate in opposite directions through the meshing with the two groups of first bevel gears, thereby improving the convenience of the pattern torsion test, and the rotational torque is detected by the torque sensor, thereby improving the convenience of test data detection.

[0012] Preferably, the driving device includes a second guide, a second lead screw, a second slider and a third motor, the second guide is mounted on the moving end of the first hydraulic cylinder, the second lead screw is rotatably mounted on the inner wall of the second guide, the two groups of second sliders are slidably mounted on the second guide, and the two groups of second sliders are respectively fitted on the outer wall of the second lead screw, the two groups of first clamping members are respectively mounted on the bottom ends of the two groups of second sliders, the third motor is mounted on the outer wall of the second guide, and the output end of the third motor is connected to the second lead screw; the second lead screw is driven to rotate by the third motor, so that the second lead screw drives the two groups of second sliders to move toward each other, thereby making the two groups of second sliders drive the two groups of first clamping members to move toward each other, thereby improving the convenience of the two groups of first clamping members to clamp and fix the pattern.

[0013] Preferably, it also includes a fixing part, a fourth hydraulic cylinder and two groups of shearing knives, the fixing part is installed on the top of the base, the two groups of fourth hydraulic cylinders are respectively installed on the outer side walls of the fixing part, the two groups of shearing knives are respectively slidably installed on the fixing part, and the two groups of shearing knives are respectively connected to the moving ends of the two groups of fourth hydraulic cylinders; the two groups of shearing knives are driven by the two groups of fourth hydraulic cylinders to move in opposite directions, so that the two groups of shearing knives can shear the samples, thereby improving the convenience of shearing tests of different samples.

[0014] Preferably, it also includes a second pressure sensor, which is arranged on the moving end of the first hydraulic cylinder; by arranging the second pressure sensor, the convenience of measuring the sample shear test data by the two groups of first clamping members is improved.

[0015] Preferably, two groups of anti-skid pads are further included, and the two groups of anti-skid pads are respectively arranged on the outer side walls of the two groups of first clamping members; by arranging the two groups of anti-skid pads, the anti-skid effect of the two groups of first clamping members on the pattern is improved.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the sample is placed horizontally on the top of the support plate, the two ends of the sample are clamped and fixed by the test device, and then the two groups of second hydraulic cylinders drive the support plate to move downward to separate the support plate from the sample, and then the first hydraulic cylinder drives the two groups of first clamping members to move downward to the two sides of the sample, and the driving device drives the two groups of first clamping members to move closer to each other, so that the two groups of first clamping members clamp and fix the middle part of the sample, and then the first hydraulic cylinder continues to drive the two groups of first clamping members to move downward, so that the two groups of first clamping members perform a shear test on the sample, thereby improving the convenience of the positioning operation of the sample, reducing the complexity of the personnel's sample fixing operation, and the test device performs stretching, extrusion and torsion tests on the sample, thereby reducing the use limitations of the testing machine, improving the multi-purpose effect of one machine, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the axonometric structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the axonometric local structure of the connection between the first sliding block and the base, etc.;

[0019] Figure 3 It is a schematic diagram of the axonometric partial structure of the connection between the base and the bracket;

[0020] Figure 4 is a schematic diagram of an axonometric partial structure of the connection between the second clamping member and the third hydraulic cylinder;

[0021] Figure 5 It is a schematic diagram of the axonometric local structure of the connection between the cylinder and the base;

[0022] Figure 6 It is a schematic diagram of the partial axonometric structure of the connection between the first hydraulic cylinder and the bracket, etc.;

[0023] Figure 7 is an isometric partial structural diagram of the connection between the first clamping member and the second sliding block;

[0024] Figure 8 It is a schematic diagram of the partial axonometric structure of the connection between the fixing part and the fourth hydraulic cylinder, etc.;

[0025] Fig. 9 It is a schematic diagram of the axonometric local structure of the connection between the support rod and the push plate;

[0026] Fig.10 It is a schematic diagram of the partial axonometric structure of the connection between the spline shaft and the spur gear, etc.;

[0027] Fig.11 It is a schematic diagram of the partial axonometric structure of the connection between the support plate and the second hydraulic cylinder;

[0028] Fig.12 It is a schematic diagram of the axonometric local structure of the connection between the spline sleeve and the spline shaft;

[0029] Fig.13 It is a physical diagram of the present invention.

[0030] The numbers in the accompanying drawings are: 101, base; 102, bracket; 103, first hydraulic cylinder; 104, first clamping member; 105, support plate; 106, second hydraulic cylinder; 201, first slider; 202, base; 203, first pressure sensor; 204, cylinder; 205, second clamping member; 206, third hydraulic cylinder; 207, guide column; 301, support seat; 302, spline sleeve; 303, spline shaft; 304, spur gear; 305, gear ring; 401, support rod; 40 2. Limit block; 403. Push plate; 404. Spring; 501. First guide member; 502. First lead screw; 503. Coupling; 504. First motor; 601. First bevel gear; 602. Second bevel gear; 603. Second motor; 701. Second guide member; 702. Second lead screw; 703. Second slider; 704. Third motor; 801. Fixing member; 802. Fourth hydraulic cylinder; 803. Shearing knife; 901. Second pressure sensor; 1001. Anti-skid pad. DETAILED DESCRIPTION

[0031] In order to facilitate understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0032] Example 1

[0033] A composite material shear tester of the present invention comprises a base 101 and a bracket 102, wherein the bracket 102 is mounted on the top of the base 101; further comprising a driving device, a testing device, a first hydraulic cylinder 103, a first clamping member 104, a supporting plate 105 and two groups of second hydraulic cylinders 106, wherein the first hydraulic cylinder 103 is mounted on the top of the bracket 102, and the two groups of first clamping members 104 are mounted on the moving end of the first hydraulic cylinder 103 through the driving device, and the driving device is used to drive the two groups of first clamping members 104 to move in opposite directions, and the supporting plate 105 and the two groups of first clamping members 104 are arranged opposite to each other up and down, and the supporting plate 105 is mounted on the moving ends of the two groups of second hydraulic cylinders 106, and the two groups of second hydraulic cylinders 106 are both mounted on the top of the base 101, and the testing device is arranged on the base 101, and the testing device is used to fix the composite material sample, and the testing device is used to test the sample for stretching, extrusion and twisting;

[0034] The test device comprises a moving device, a power device, two groups of first sliders 201, two groups of bases 202, multiple groups of first pressure sensors 203, two groups of cylinders 204, two groups of second clamps 205, four groups of third hydraulic cylinders 206 and multiple groups of guide columns 207. The two groups of first sliders 201 are slidably mounted on the moving device, and the moving device is used to drive the two groups of first sliders 201 to move towards each other. The two groups of bases 202 are slidably mounted on the tops of the two groups of first sliders 201, respectively. The multiple groups of first pressure sensors 203 are mounted on the outer side walls of the two groups of first sliders 201, and the multiple groups of first The pressure sensor 203 is in contact with both sides of the two groups of bases 202 respectively, and the two groups of cylinders 204 are rotatably installed on the two groups of bases 202 respectively through a power device, wherein every two groups of second clamping members 205 are respectively arranged on one group of cylinders 204 opposite to each other, and the four groups of third hydraulic cylinders 206 are respectively installed on the outer side walls of the two groups of cylinders 204, and the four groups of second clamping members 205 are respectively installed on the moving ends of the four groups of third hydraulic cylinders 206, and multiple groups of guide columns 207 are respectively slidably installed on the two groups of cylinders 204, and the moving ends of the multiple groups of guide columns 207 are respectively connected to the outer side walls of the four groups of second clamping members 205;

[0035] In this embodiment, the sample is placed horizontally on the top of the support plate 105, and the two ends of the sample are clamped and fixed by the test device. Then, the two groups of second hydraulic cylinders 106 drive the support plate 105 to move downward to separate the support plate 105 from the sample. Then, the first hydraulic cylinder 103 drives the two groups of first clamping members 104 to move downward to the two sides of the sample, and the driving device drives the two groups of first clamping members 104 to move closer to each other, so that the two groups of first clamping members 104 clamp and fix the middle part of the sample. Then, the first hydraulic cylinder 103 continues to drive the two groups of first clamping members 104 to move downward, so that the two groups of first clamping members 104 perform a shear test on the sample, thereby improving the convenience of the sample positioning operation, reducing the complexity of the sample fixing operation by personnel, and performing tension, extrusion and torsion tests on the sample through the test device, thereby reducing the use limitations of the testing machine, improving the multi-purpose effect of one machine, and improving work efficiency.

[0036] Example 2

[0037] On the basis of Example 1, a composite shear testing machine of the present invention, the power device includes a rotating device, a support seat 301, two groups of spline sleeves 302, two groups of spline shafts 303, two groups of spur gears 304 and two groups of gear rings 305, the support seat 301 is installed on the top of the base 101, the two groups of spline sleeves 302 are respectively rotatably installed on the support seat 301, and the two groups of spline sleeves 302 rotate in opposite directions through the power of the rotating device, the ends of the two groups of spline shafts 303 are respectively mounted on the two groups of spline sleeves 302, and the two groups of spline shafts 303 are respectively rotatably installed on the two groups of bases 202, the two groups of spur gears 304 are respectively installed on the other ends of the two groups of spline shafts 303, the two groups of gear rings 305 are respectively installed on the outer side walls of the two groups of cylinders 204, and the two groups of gear rings 305 are respectively meshed with the two groups of spur gears 304;

[0038] It also includes two groups of support rods 401, two groups of limit blocks 402, two groups of push plates 403 and two groups of springs 404. The two groups of support rods 401 are slidably mounted on the two groups of cylinders 204 respectively, the two groups of limit blocks 402 are respectively mounted on the ends of the two groups of support rods 401, the two groups of push plates 403 are respectively rotatably mounted on the outer side walls of the two groups of support rods 401, and the two groups of push plates 403 are arranged opposite to each other, and the two groups of springs 404 are respectively fitted on the outer side walls of the two groups of support rods 401;

[0039] The moving device includes a first guide 501, a first lead screw 502, a coupling 503 and a first motor 504. The first guide 501 is installed on the top of the base 101. The first lead screw 502 is rotatably installed on the inner wall of the first guide 501. Two groups of first sliders 201 are respectively slidably installed on the first guide 501, and the two groups of first sliders 201 are respectively screwed on the outer wall of the first lead screw 502. The coupling 503 is connected to the end of the first lead screw 502. The first motor 504 is installed on the outer wall of the first guide 501, and the output end of the first motor 504 is connected to the coupling 503.

[0040] The rotating device includes two sets of first bevel gears 601, a second bevel gear 602 and a second motor 603. The two sets of first bevel gears 601 are respectively mounted on the outer side walls of the two sets of spline sleeves 302. The second motor 603 is mounted on the top of the first guide member 501. The second bevel gear 602 is mounted on the output end of the second motor 603. The second bevel gear 602 is meshed with the two sets of first bevel gears 601, and a torque sensor is arranged between the second bevel gear 602 and the second motor 603.

[0041] The driving device includes a second guide 701, a second lead screw 702, a second slider 703 and a third motor 704. The second guide 701 is mounted on the moving end of the first hydraulic cylinder 103. The second lead screw 702 is rotatably mounted on the inner wall of the second guide 701. Two groups of second sliders 703 are slidably mounted on the second guide 701, and the two groups of second sliders 703 are respectively fitted on the outer wall of the second lead screw 702. Two groups of first clamping members 104 are respectively mounted on the bottom ends of the two groups of second sliders 703. The third motor 704 is mounted on the outer wall of the second guide 701, and the output end of the third motor 704 is connected to the second lead screw 702.

[0042] It also includes a fixing member 801, a fourth hydraulic cylinder 802 and two groups of shearing knives 803, wherein the fixing member 801 is mounted on the top of the base 101, the two groups of fourth hydraulic cylinders 802 are respectively mounted on the outer side walls of the fixing member 801, the two groups of shearing knives 803 are respectively slidably mounted on the fixing member 801, and the two groups of shearing knives 803 are respectively connected to the moving ends of the two groups of fourth hydraulic cylinders 802;

[0043] It also includes a second pressure sensor 901, which is arranged on the moving end of the first hydraulic cylinder 103;

[0044] It also includes two sets of anti-skid pads 1001, which are respectively arranged on the outer side walls of the two sets of first clamping members 104;

[0045] In this embodiment, after the sample is placed on the top of the support plate 105, the two groups of first sliders 201 are driven by the moving device to move closer to each other, so that the two groups of first sliders 201 drive the four groups of second clamping members 205 to move to both sides of the sample, and then the four groups of third hydraulic cylinders 206 drive the four groups of second clamping members 205 to move closer to each other, so that the four groups of second clamping members 205 clamp the two ends of the sample and fix them, so as to facilitate the two groups of first clamping members 104 to perform a shear test on the sample. After the four groups of second clamping members 205 clamp the sample and fix it, the two groups of cylinders 204 are driven by the power device to rotate in opposite directions, so that the four groups of cylinders 204 rotate the two ends of the sample in opposite directions respectively, so that the sample is subjected to a torsion test, and the two groups of first sliders are driven by the moving device to move closer to each other, so that the four groups of second clamping members 205 can move to both sides of the sample. The blocks 201 move away from each other, so that the two groups of cylinders 204 perform a tensile test on the sample, and the two groups of first sliders 201 move closer to each other, so that the sample is subjected to an extrusion test, thereby reducing the limitations of the use of the testing machine and improving the test efficiency. By setting up multiple groups of first pressure sensors 203, the convenience of measuring the tensile and extrusion test data of the sample is improved, and the two groups of spline sleeves 302 are driven by the rotating device to rotate in opposite directions, so that the two groups of spline sleeves 302 drive the two groups of spline shafts 303 to rotate in opposite directions, so that the two groups of spline shafts 303 drive the two groups of spur gears 304 to rotate in opposite directions, and the two groups of spur gears 304 drive the two groups of cylinders 204 to rotate in opposite directions after meshing with the two groups of gear rings 305, thereby improving the convenience of the testing machine for the sample torsion test.

[0046] like Figures 1 to 13 As shown, a composite material shear testing machine of the present invention, when working, places the sample horizontally on the top of a support plate 105, clamps and fixes the two ends of the sample by a test device, then drives the support plate 105 downward by two groups of second hydraulic cylinders 106 to separate the support plate 105 from the sample, then drives the two groups of first clamping members 104 downward to the two sides of the sample by the first hydraulic cylinder 103, drives the two groups of first clamping members 104 to move close to each other by a driving device, so that the two groups of first clamping members 104 clamp and fix the middle of the sample, then continues to drive the two groups of first clamping members 104 downward by the first hydraulic cylinder 103, so that the two groups of first clamping members 104 perform a shear test on the sample, and performs tension, extrusion and torsion tests on the sample by the test device.

[0047] The main functions achieved by the present invention are: improving the convenience of pattern positioning operation, reducing the complexity of personnel's pattern fixing operation, and conducting stretching, extrusion and twisting tests on the pattern through the test device, thereby reducing the limitations of test use, improving the multi-purpose effect of one machine, and improving work efficiency.

[0048] The first hydraulic cylinder 103, the second hydraulic cylinder 106, the first pressure sensor 203, the third hydraulic cylinder 206, the coupling 503, the first motor 504, the second motor 603, the third motor 704, the fourth hydraulic cylinder 802 and the second pressure sensor 901 of the composite material shear testing machine of the present invention are purchased on the market. The technicians in the industry only need to install and operate them according to the accompanying instruction manual, without the need for the technicians in this field to make creative efforts.

[0049] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A composite material shear testing machine, comprising a base (101) and a bracket (102), wherein the bracket (102) is mounted on the top of the base (101); characterized in that: The invention also comprises a driving device, a testing device, a first hydraulic cylinder (103), a first clamping member (104), a support plate (105) and two groups of second hydraulic cylinders (106); the first hydraulic cylinder (103) is mounted on the top of the bracket (102); the two groups of first clamping members (104) are mounted on the moving end of the first hydraulic cylinder (103) through the driving device; the driving device is used to drive the two groups of first clamping members (104) to move in opposite directions; the support plate (105) and the two groups of first clamping members (104) are arranged opposite to each other in the upper and lower directions; the support plate (105) is mounted on the moving ends of the two groups of second hydraulic cylinders (106); the two groups of second hydraulic cylinders (106) are both mounted on the top of the base (101); the testing device is arranged on the base (101); the testing device is used to fix the composite material sample; and the testing device is used to perform tension, compression and torsion tests on the sample.

2. A composite material shear testing machine as claimed in claim 1, characterized in that: The test device comprises a moving device, a power device, two groups of first sliders (201), two groups of bases (202), multiple groups of first pressure sensors (203), two groups of cylinders (204), two groups of second clamping members (205), four groups of third hydraulic cylinders (206) and multiple groups of guide columns (207). The two groups of first sliders (201) are both slidably mounted on the moving device. The moving device is used to drive the two groups of first sliders (201) to move in opposite directions. The two groups of bases (202) are respectively slidably mounted on the top ends of the two groups of first sliders (201). The multiple groups of first pressure sensors (203) are all mounted on the outer side walls of the two groups of first sliders (201). The force sensor (203) is in contact with both sides of the two groups of bases (202), and the two groups of cylinders (204) are respectively rotatably mounted on the two groups of bases (202) through a power device, wherein every two groups of second clamping members (205) are respectively arranged on one group of cylinders (204) facing each other, and the four groups of third hydraulic cylinders (206) are respectively mounted on the outer side walls of the two groups of cylinders (204), and the four groups of second clamping members (205) are respectively mounted on the moving ends of the four groups of third hydraulic cylinders (206), and multiple groups of guide columns (207) are respectively slidably mounted on the two groups of cylinders (204), and the moving ends of the multiple groups of guide columns (207) are respectively connected to the outer side walls of the four groups of second clamping members (205).

3. A composite material shear testing machine as claimed in claim 2, characterized in that: The power device comprises a rotating device, a support seat (301), two groups of spline sleeves (302), two groups of spline shafts (303), two groups of spur gears (304) and two groups of gear rings (305). The support seat (301) is mounted on the top of the base (101). The two groups of spline sleeves (302) are respectively rotatably mounted on the support seat (301), and the two groups of spline sleeves (302) rotate in opposite directions through the power of the rotating device. The ends of the two groups of spline shafts (303) are respectively mounted on the two groups of spline sleeves (302), and the two groups of spline shafts (303) are respectively rotatably mounted on the two groups of bases (202). The two groups of spur gears (304) are respectively mounted on the other ends of the two groups of spline shafts (303). The two groups of gear rings (305) are respectively mounted on the outer side walls of the two groups of cylinders (204), and the two groups of gear rings (305) are respectively meshed with the two groups of spur gears (304).

4. A composite material shear testing machine as claimed in claim 2, characterized in that: It also includes two groups of support rods (401), two groups of limit blocks (402), two groups of push plates (403) and two groups of springs (404). The two groups of support rods (401) are respectively slidably mounted on the two groups of cylinders (204). The two groups of limit blocks (402) are respectively mounted on the ends of the two groups of support rods (401). The two groups of push plates (403) are respectively rotatably mounted on the outer side walls of the two groups of support rods (401). The two groups of push plates (403) are arranged opposite to each other. The two groups of springs (404) are respectively fitted on the outer side walls of the two groups of support rods (401).

5. A composite material shear testing machine as claimed in claim 2, characterized in that: The moving device comprises a first guide member (501), a first lead screw (502), a coupling (503) and a first motor (504); the first guide member (501) is mounted on the top of the base (101); the first lead screw (502) is rotatably mounted on the inner wall of the first guide member (501); two groups of first sliders (201) are respectively slidably mounted on the first guide member (501); and the two groups of first sliders (201) are respectively screwed on the outer wall of the first lead screw (502); the coupling (503) is connected to the end of the first lead screw (502); the first motor (504) is mounted on the outer wall of the first guide member (501); and the output end of the first motor (504) is connected to the coupling (503).

6. A composite material shear testing machine as claimed in claim 3, characterized in that: The rotating device comprises two groups of first bevel gears (601), a second bevel gear (602) and a second motor (603); the two groups of first bevel gears (601) are respectively mounted on the outer side walls of two groups of spline sleeves (302); the second motor (603) is mounted on the top of the first guide member (501); the second bevel gear (602) is mounted on the output end of the second motor (603); the second bevel gear (602) is meshed with the two groups of first bevel gears (601); and a torque sensor is arranged between the second bevel gear (602) and the second motor (603).

7. A composite material shear testing machine as claimed in claim 1, characterized in that: The driving device comprises a second guide member (701), a second lead screw (702), a second slider (703) and a third motor (704); the second guide member (701) is mounted on the movable end of the first hydraulic cylinder (103); the second lead screw (702) is rotatably mounted on the inner wall of the second guide member (701); two groups of second sliders (703) are both slidably mounted on the second guide member (701); the two groups of second sliders (703) are respectively fitted on the outer wall of the second lead screw (702); two groups of first clamping members (104) are respectively mounted on the bottom ends of the two groups of second sliders (703); the third motor (704) is mounted on the outer wall of the second guide member (701); and the output end of the third motor (704) is connected to the second lead screw (702).

8. A composite material shear testing machine as claimed in claim 1, characterized in that: The invention also comprises a fixing member (801), a fourth hydraulic cylinder (802) and two groups of shearing knives (803), wherein the fixing member (801) is mounted on the top of the base (101), the two groups of fourth hydraulic cylinders (802) are respectively mounted on the outer side walls of the fixing member (801), the two groups of shearing knives (803) are respectively slidably mounted on the fixing member (801), and the two groups of shearing knives (803) are respectively connected to the movable ends of the two groups of fourth hydraulic cylinders (802).

9. A composite material shear testing machine as claimed in claim 1, characterized in that: It also includes a second pressure sensor (901), which is arranged on the moving end of the first hydraulic cylinder (103).

10. A composite material shear testing machine as claimed in claim 1, characterized in that: It also includes two groups of anti-skid pads (1001), which are respectively arranged on the outer side walls of the two groups of first clamping members (104).

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