A geogrid performance testing device

Abstract

This invention discloses a geogrid performance testing device, belonging to the field of geogrid performance testing technology. It includes a device body, with a blower plate located at the center of the front end of the device body's inner cavity. A guide plate is located on one side of the front end of the device body's inner cavity, and a guide plate is located on the other side of the front end of the device body's inner cavity. The blower plate, guide plate one, and guide plate two divide the inner cavity of the device body into a testing chamber one, a testing chamber two, and a power chamber. A lead screw is movably connected to the center of the power chamber. This geogrid performance testing device uses the lead screw to apply tension to the geogrid in testing chamber one or testing chamber two, thus eliminating the need to wait for the upper clamp to reset during use. The device can be used continuously, improving work efficiency. The two clamping fixtures use the same power source to apply tension, reducing interference during geogrid performance testing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of geogrid performance detection, in particular to a geogrid performance detection equipment. BACKGROUND

[0002] Geogrid is a two-dimensional grid or three-dimensional grid screen made of high molecular polymers such as polypropylene and polyvinyl chloride through thermal molding or molding. When used in civil engineering, it is called geogrid. Geogrid has high strength, small creep, and can adapt to various types of environmental soil, which can meet the use of high retaining wall in high-grade highway. Geogrid can effectively improve the interlocking and biting effect of the reinforced bearing surface, greatly enhance the bearing capacity of the foundation, effectively constrain the lateral displacement of the soil, and enhance the stability of the foundation. Since geogrid is widely used in practical engineering, its performance detection is particularly important.

[0003] The tensile strength of geogrid is an important performance indicator of geogrid. In related technologies, a tensile testing machine is usually used to measure the tensile strength of the geogrid. At present, the general use method of the tensile testing machine is: the sample is clamped between two clamps, then the tensile force or pressure is applied, the sensor is used to monitor the applied force and the deformation of the sample in real time, and the control system records the data and analyzes it. By applying different loads and measuring the strain and stress of the sample, the stress-strain curve of the material can be drawn, and then the strength, toughness and other mechanical properties of the material can be evaluated. Since the tensile strength of the geogrid usually needs to be measured several times, the existing tensile testing machine needs to wait for the clamps to reset after each use before it can continue to be used, which reduces the work efficiency; during use, the broken debris is easy to fly around, increasing the risk of equipment damage and increasing the difficulty of cleaning. Based on this, the present application provides a geogrid performance detection equipment. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a geogrid performance detection equipment, which solves the problems of the existing tensile testing machine in the prior art, which needs to wait for the clamps to reset after each use before it can continue to be used; during use, the broken debris is easy to fly around, increasing the risk of equipment damage and increasing the difficulty of cleaning.

[0005] The application provides the following technical scheme: a geogrid performance detection equipment, including an equipment body, a blowing plate is arranged at the middle of the front end of the inner cavity of the equipment body, a guide plate one is arranged on one side of the front end of the inner cavity of the equipment body, a guide plate two is arranged on the other side of the front end of the inner cavity of the equipment body, the blowing plate, the guide plate one and the guide plate two divide the inner cavity of the equipment body into a detection cavity one, a detection cavity two and a power cavity, a lead screw is movably connected in the inner cavity of the power cavity, a lower clamp is arranged at the middle of the bottom end of the guide plate one and the guide plate two, a guide groove is arranged at the middle of the guide plate one and the guide plate two, an upper clamp is movably connected in the inner cavity of the guide groove, the rear end of the upper clamp in the detection cavity one is connected with a connecting rod one through a tension sensor, the other end of the connecting rod one is connected with a double-head cylinder one, the two output shaft ends of the double-head cylinder one are fixedly connected with opening and closing blocks one, the middle of the inner side of the opening and closing blocks one is provided with semicircular holes one, and the inner wall of the circular cavity formed by the two semicircular holes one is provided with internal threads matched with the lead screw; the rear end of the upper clamp in the detection cavity two is connected with a connecting rod two through another tension sensor, the other end of the connecting rod two is connected with a double-head cylinder two, the two output shaft ends of the double-head cylinder two are fixedly connected with opening and closing blocks two, the middle of the inner side of the opening and closing blocks two is provided with semicircular holes two, and the inner wall of the circular cavity formed by the two semicircular holes two is provided with internal threads matched with the lead screw.

[0006] Preferably, the top of the inner cavity of the detection cavity one and the detection cavity two is provided with a pressure relief valve, the side of the detection cavity one and the detection cavity two is provided with a through hole, the outer side of the through hole is provided with a collection box, the collection box is arranged opposite to the blowing plate; the front end of the detection cavity one and the detection cavity two is provided with an opening and closing door.

[0007] Preferably, one side of the power cavity is provided with a blowing structure, the blowing structure includes a blower and a constant temperature water tank, the inner cavity of the constant temperature water tank is provided with a heat exchange pipe, the air inlet end of the heat exchange pipe is connected with the air outlet end of the blower, the air inlet end of the blower is fixedly connected with an air inlet pipe, the other end of the air inlet pipe extends to the outside of the equipment body, one side of the inner cavity of the blowing plate is fixedly connected with a connecting pipe, the other end of the heat exchange pipe is connected with the connecting pipe.

[0008] Preferably, the power cavity is fixedly connected with a servo motor one, and the lead screw is driven by the servo motor one.

[0009] Preferably, the bottom end of the inner cavity of the guide groove is fixedly connected with a positioning block, the positioning block and the bottom of the inner cavity of the guide groove are connected through an expansion plate, the two sides of the top end of the inner cavity of the guide groove are provided with grooves, the inner cavity of the groove is fixedly connected with an electric telescopic rod, the output shaft end of the electric telescopic rod is fixedly connected with a sealing plate, the inner cavity of the groove is movably connected with the sealing plate, and when the upper clamp contacts the positioning block, the top of the upper clamp and the bottom of the sealing plate are at the same height.

[0010] Preferably, the bottom of the upper clamp is fixedly connected with an electromagnet one and a buffer pad, and the top of the positioning block is fixedly connected with an electromagnet two.

[0011] Preferably, the upper clamp and the lower clamp each comprise a clamp body, a positioning plate connected with the clamp body away from the side of the lead screw one, and a pressing plate movably connected with the positioning plate, the pressing plate is located on the side of the clamp body away from the lead screw, the pressing plate is connected with the clamp body through a connecting structure, the clamp body in the upper clamp is movably connected with the guide groove, and the clamp body in the lower clamp is fixedly connected with the guide plate one or the guide plate two.

[0012] Preferably, the connecting structure comprises a ball screw connected with the clamp body away from the side of the positioning block, a ball nut threadedly connected with the outer ring of the ball screw, a rotating shaft movably connected with the ball nut, a servo motor two fixedly connected with the ball nut, and a servo motor three fixedly connected with the clamp body away from the side of the positioning block, the output shaft of the servo motor two is fixedly connected with the rotating shaft, the rotating shaft is fixedly connected with the pressing plate, and the ball screw is driven by the servo motor three.

[0013] Preferably, the positioning plate is L-shaped, the horizontal end of the positioning plate is located on the side of the clamp body away from the positioning block, and the vertical end of the positioning plate is located on the side of the clamp body away from the blowing plate.

[0014] Compared with the prior art, the present application has the following beneficial effects:

[0015] 1. The geogrid performance detection equipment, the structure formed by the lead screw and the two opening and closing blocks one or the structure formed by the two opening and closing blocks two can be quickly threadedly connected or separated, so that when the equipment is used, the lead screw can be used to alternately apply tension to the geogrid in the detection cavity one or the geogrid in the detection cavity two, thereby making the equipment not need to wait for the reset of the upper clamp on one side before the next detection, and the equipment can be continuously used, improving the work efficiency. The two clamping clamps use the same power source to apply tension, reducing the interference during the geogrid performance test.

[0016] 2. The geogrid performance detection equipment, through the setting of the blowing structure and the blowing plate, the work of the air blower makes the blowing plate blow out constant-temperature air, the constant-temperature air blown to the sample can regulate the temperature of the sample, avoiding the influence of the change of the temperature of the sample on the accuracy of the detection result, and when the sample is broken, the constant-temperature air can change the movement track of the debris, so that the debris is concentrated, the debris is easy to clean, the interference of the debris is reduced, and the equipment is easy to use. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a front view of the structure of the present application;

[0018] Figure 2 Structure back view of the present application;

[0019] Figure 3 Structure of the present application Figure 2 Sectional view;

[0020] Figure 4 Structure cross-sectional view of the present application;

[0021] Figure 5 Structure connecting rod one and the upper clamp connection schematic diagram of the present application;

[0022] Figure 6 Structure clamping clamp and guide plate two connection schematic diagram of the present application;

[0023] Figure 7 Structure of the present application Figure 6 Explosion schematic diagram;

[0024] Figure 8 Structure connecting rod two and the upper clamp connection schematic diagram of the present application;

[0025] Figure 9 Structure connecting rod two looking up schematic diagram of the present application;

[0026] Figure 10 Structure upper clamp explosion schematic diagram of the present application.

[0027] In the figure: 1, the device body; 2, the blowing plate; 3, the guide plate one; 4, the through hole; 5, the opening and closing door; 6, the pressure relief valve; 7, the collection box; 8, the connecting pipe; 9, the expansion plate; 10, the positioning block; 11, the guide plate two; 12, the constant temperature water tank; 13, the air blower; 14, the air inlet pipe; 15, the heat exchange pipe; 16, servo motor one; 17, the screw rod; 18, the sealing plate; 19, the guide groove; 20, double head cylinder two; 21, opening and closing block two; 22, clamp body; 23, electromagnet two; 24, electric telescopic rod; 25, connecting rod two; 26, electromagnet one; 27, the pressing plate; 28, the rotating shaft; 29, servo motor two; 30, ball nut; 31, servo motor three; 32, ball screw; 33, positioning plate; 34, opening and closing block one; 35, double head cylinder one; 36, connecting rod one; 37, detection cavity one; 38, detection cavity two; 39, power cavity; 40, tension sensor. DETAILED DESCRIPTION

[0028] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those ordinarily skilled in the art without creative effort belong to the scope of the present application.

[0029] The application provides a geogrid performance detection device, which comprises a device body 1, a blowing plate 2 arranged at the middle of the front end of the inner cavity of the device body 1, a guide plate one 3 arranged at one side of the front end of the inner cavity of the device body 1, and a guide plate two 11 arranged at the other side of the front end of the inner cavity of the device body 1. The blowing plate 2, the guide plate one 3 and the guide plate two 11 divide the inner cavity of the device body 1 into a detection cavity one 37, a detection cavity two 38 and a power cavity 39.

[0030] The inner cavities of the detection cavity one 37 and the detection cavity two 38 are both provided with clamping jigs. When the device is used to detect the performance of the geogrid, the geogrid sample is clamped and fixed by the clamping jigs. The clamping jigs comprise upper clamps and lower clamps. The middle of the bottom end of each of the guide plate one 3 and the guide plate two 11 is provided with a lower clamp. The middle of each of the guide plate one 3 and the guide plate two 11 is provided with a guide groove 19. The inner cavity of the guide groove 19 is movably connected with an upper clamp. The inner cavity of the power cavity 39 is movably connected with a lead screw 17. The power cavity 39 is fixedly connected with a servo motor one 16. The output shaft of the servo motor one 16 is connected with the lead screw 17 through a speed reducer. The lead screw 17 is driven by the servo motor one 16. The servo motor one 16 can drive the lead screw 17 to rotate.

[0031] The rear end of the upper clamp in the detection cavity one 37 is connected with a connecting rod one 36 through a tension sensor 40, the other end of the connecting rod one 36 is connected with a double-head cylinder one 35, the two output shaft ends of the double-head cylinder one 35 are fixedly connected with opening and closing blocks one 34, the screw rod 17 is located between the two opening and closing blocks one 34, the middle part of the inner side of the opening and closing block one 34 is provided with a semicircular hole one, and the inner wall of the circular cavity formed by the two semicircular holes one is provided with an internal thread matched with the screw rod 17, the extension of the double-head cylinder one 35 can change the position of the opening and closing block one 34, when the two opening and closing blocks one 34 are tightly attached, the structure formed by the two opening and closing blocks one 34 is in a threaded connection state with the screw rod 17, when the screw rod 17 rotates, the two opening and closing blocks one 34 can drive the connecting rod one 36 to move, the connecting rod one 36 can drive the upper clamp to move away from the lower clamp through the tension sensor 40, so that the clamping clamp can stretch the geogrid, and the tension sensor 40 can be used to measure the force applied to the geogrid; the rear end of the upper clamp in the detection cavity two 38 is connected with a connecting rod two 25 through another tension sensor 40, the other end of the connecting rod two 25 is connected with a double-head cylinder two 20, the two output shaft ends of the double-head cylinder two 20 are fixedly connected with opening and closing blocks two 21, the middle part of the inner side of the opening and closing block two 21 is provided with a semicircular hole two, and the inner wall of the circular cavity formed by the two semicircular holes two is provided with an internal thread matched with the screw rod 17, the extension of the double-head cylinder two 20 can change the position of the opening and closing block two 21 connected therewith, when the two opening and closing blocks two 21 contact, the structure formed by the two opening and closing blocks two 21 is in a threaded connection state with the screw rod 17, when the screw rod 17 rotates, the two opening and closing blocks two 21 can drive the upper clamp connected therewith to move upward.

[0032] As can be seen from the above description, the structure formed by the screw rod 17 and the two opening and closing blocks one 34 or the structure formed by the two opening and closing blocks two 21 can be quickly threaded or separated, so that when the device is used, the screw rod 17 can be used to apply tension to the geogrid in the detection cavity one 37 or the geogrid in the detection cavity two 38, which facilitates the measurement of the tensile strength of the geogrid by the device. Furthermore, when the device is used, the two detection cavities on both sides can work alternately, without waiting for the reset of the upper clamp on one side before the next detection, so that the device can be used continuously, improving the work efficiency.

[0033] The bottom end of the inner cavity of the guide groove 19 is fixedly connected with a positioning block 10, the positioning block 10 is connected with the bottom of the inner cavity of the guide groove 19 through an expansion plate 9, the positioning block 10 can limit the upper clamp, so that the distance between the upper clamp and the lower clamp can be kept fixed, which is convenient for the user to use the clamping clamp to clamp and fix the measured geogrid, both sides of the top end of the inner cavity of the guide groove 19 are provided with a groove, the inner cavity of the groove is fixedly connected with an electric telescopic rod 24, the output shaft end of the electric telescopic rod 24 is fixedly connected with a sealing plate 18, the sealing plate 18 is movably connected with the inner cavity of the groove, and when the upper clamp contacts the positioning block 10, the top of the upper clamp and the bottom of the sealing plate 18 are at the same height, at this time, the expansion of the electric telescopic rod 24 can change the position of the sealing plate 18 connected therewith, when the two sealing plates 18 are pasted, the sealing plate 18 can seal the gap between the detection cavity one 37 or the detection cavity two 38 and the power cavity 39, at this time, the detection cavity one 37 and the detection cavity two 38 are in a sealed state, which is convenient for sample replacement.

[0034] The bottom of the upper clamp is fixedly connected with an electromagnet one 26 and a buffer pad, the buffer pad can be made of rubber, the top of the positioning block 10 is fixedly connected with an electromagnet two 23, when the current directions flowing into the electromagnet one 26 and the electromagnet two 23 are the same, the electromagnet one 26 and the electromagnet two 23 are in a magnetic repulsion state, which is beneficial to the repulsive force between the two, so as to reduce the speed of free falling of the upper clamp, and further reduce the impact force when the upper clamp contacts the positioning block 10.

[0035] The upper clamp and the lower clamp both include a clamp body 22, a positioning plate 33 connected with the clamp body 22 away from the lead screw 17 side and a pressing plate 27 movably connected with the positioning plate 33, the pressing plate 27 is located away from the lead screw 17 side of the clamp body 22, the pressing plate 27 is connected with the clamp body 22 through a connecting structure, the clamp body 22 in the upper clamp is movably connected with the guide groove 19, and the clamp body 22 in the lower clamp is fixedly connected with the guide plate one 3 or the guide plate two 11. The positioning plate 33 is L-shaped, the horizontal end of the positioning plate 33 is located away from the positioning block 10 side of the clamp body 22, and the vertical end of the positioning plate 33 is located away from the blowing plate 2 side of the clamp body 22.

[0036] The connecting structure comprises a ball screw 32 connected to the clamp body 22 away from the positioning block 10, a ball nut 30 threadedly connected to the outer ring of the ball screw 32, a rotating shaft 28 movably connected to the ball nut 30, a servo motor two 29 fixedly connected to the ball nut 30, and a servo motor three 31 fixedly connected to the clamp body 22 away from the positioning block 10. The output shaft of the servo motor two 29 is fixedly connected to the rotating shaft 28, and the rotating shaft 28 is fixedly connected to the pressing plate 27. When the servo motor two 29 rotates, the pressing plate 27 can be driven to rotate through the rotating shaft 28, facilitating the taking and placing of the sample. The ball screw 32 is driven by the servo motor three 31. The operation of the servo motor three 31 can drive the rotation of the ball screw 32 connected thereto. The rotation of the ball screw 32 changes the distance between the pressing plate 27 and the clamp body 22. The pressing plate 27 can press the geogrid sample to achieve clamping and fixing of the sample.

[0037] As described above, the positioning plate 33 can be used to position the sample to be tested, so that the clamping position of the sample can remain consistent, reducing errors. The connecting structure can change the position of the pressing plate 27, and the pressing plate 27 can press the sample to achieve the fixation of the sample.

[0038] One side of the power cavity 39 is provided with a blowing structure, which comprises a blower 13 and a constant temperature water tank 12. The inner cavity of the constant temperature water tank 12 is provided with a heat exchange pipe 15. The air inlet end of the heat exchange pipe 15 is connected to the air outlet end of the blower 13. The air inlet end of the blower 13 is fixedly connected with an air inlet pipe 14. The other end of the air inlet pipe 14 extends to the outside of the equipment body 1. One side of the inner cavity of the blowing plate 2 is fixedly connected with a connecting pipe 8. The other end of the heat exchange pipe 15 is connected with the connecting pipe 8. Through the setting of the blowing structure, the blower 13 can blow the air outside into the heat exchange pipe 15. The air exchanges heat with the surrounding constant temperature water during the flow in the heat exchange pipe 15. The constant temperature air enters the inner cavity of the blowing plate 2 through the connecting pipe 8. The air in the inner cavity of the blowing plate 2 is sprayed into the detection cavity one 37 and the detection cavity two 38 through the spray holes arranged on the side wall. The spraying of the constant temperature air on the sample can adjust the temperature of the sample, keep the temperature of the sample unchanged, reduce the use error of the equipment, and blow away the debris generated when the sample is broken, avoiding the debris flying everywhere, and facilitating the cleaning of the debris.

[0039] The top of the inner cavity of each of the detection cavity one 37 and the detection cavity two 38 is provided with a pressure relief valve 6. The pressure relief valve 6 can discharge the excess gas in the equipment. The side surface of each of the detection cavity one 37 and the detection cavity two 38 is provided with a through hole 4. The outer side of the through hole 4 is provided with a collection box 7. The collection box 7 is arranged opposite to the blowing plate 2. The collection box 7 can collect the debris. The front end of each of the detection cavity one 37 and the detection cavity two 38 is provided with an opening and closing door 5. The opening and closing door 5 is made of transparent material, which can be tempered glass, facilitating the user to observe the detection process of the geogrid.

[0040] Wherein, the electrical components involved in the present application are all prior art, those skilled in the art understand their connection method, through the personnel in the art, all the electrical components in the present application are connected with their adapted power supply through wires, and according to the actual situation, the appropriate controller is selected to meet the control requirements, the specific connection and control sequence are described below, the working order of each electrical device is completed, and the detailed connection means is a known technology in the art. The working principle and process are mainly introduced below, and the electrical control is not described.

[0041] In summary, when the present application is used, the clamping fixture is used to clamp and fix the geogrid sample to be tested, and the specific operation is as follows: the servo motor two 29 drives the pressing plate 27 connected thereto to rotate until the pressing plate 27 is in a horizontal state, at this time the area of the fixture main body 22 wrapped by the positioning plate 33 leaks out, the user places the sample between the upper clamp and the lower clamp, and the end of the sample contacts the horizontal end of the fixture main body 22 and the vertical end of the positioning plate 33, after the sample is placed in position, the servo motor two 29 drives the pressing plate 27 to reverse rotation until the pressing plate 27 is reset, the servo motor three 31 drives the ball screw 32 connected thereto to rotate, the rotation of the ball screw 32 causes the pressing plate 27 to gradually approach the fixture main body 22, until the pressing plate 27 is tightly attached to the sample, achieving clamping and fixing of the sample. And during the sample taking and placing process, the electric telescopic rod 24 drives the sealing plate 18 connected thereto to move until the two sealing plates 18 are in close contact, at this time the detection cavity one 37 and the detection cavity two 38 are in a mutually independent state, avoiding affecting the sample being tested when the sample is taken and placed.

[0042] When the screw rod 17 is needed to drive the upper clamp to move, the double-head cylinder one 35 or the double-head cylinder two 20 adapted to the upper clamp to be moved works until the two opening and closing blocks one 34 or the two opening and closing blocks two 21 are tightly attached, the structure formed by the two opening and closing blocks one 34 or the two opening and closing blocks two 21 is in a threaded connection state with the screw rod 17, the servo motor one 16 drives the screw rod 17 to rotate, the screw rod 17 can drive the connecting rod one 36 or the connecting rod two 25 to move through the structure connected therewith, the connecting rod one 36 or the connecting rod two 25 drives the upper clamp to move through the tension sensor 40 connected therewith, and the geogrid sample can be stretched. This equipment can detect the tensile strength of the geogrid.

[0043] And during the detection process, the air blower 13 works, the working of the air blower 13 causes the blowing plate 2 to blow out constant temperature air, the constant temperature air blown onto the sample can regulate the temperature of the sample, avoiding affecting the accuracy of the detection result due to the change of the temperature of the sample, and when the sample is broken, the constant temperature air can change the movement trajectory of the debris, so that the debris is concentrated, facilitating the cleaning of the debris.

[0044] After the test is completed, the double-end cylinder one 35 or the double-end cylinder two 20 works, the connection with the screw rod 17 is released, under the action of gravity, the upper clamp does free fall, and the current direction of the electromagnet one 26 and the electromagnet two 23 is the same, the magnetic repulsion force between the electromagnet one 26 and the electromagnet two 23 reduces the falling speed of the upper clamp, and further reduces the impact force between the upper clamp and the positioning block 10, in the resetting process of the upper clamp, the double-end cylinder two 20 or the double-end cylinder one 35 works, so that the screw rod 17 can drive the other upper clamp to move, the device can exert the pulling force on the geogrid clamped by the other clamping clamp, the device can work continuously, and the working efficiency of the device is improved.

[0045] The standard parts used in the application can be purchased from the market, the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, the machinery, parts and equipment adopt conventional models in the prior art, which will not be described in detail here, the contents not described in detail in the specification belong to the prior art known to the person skilled in the art, although the embodiments of the application have been shown and described, it can be understood by the person skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the application, the scope of the application is defined by the appended claims and their equivalents.

Claims

1. A geogrid performance testing apparatus comprising an apparatus body (1), characterised in that: The middle part of the front end of the inner cavity of the device body (1) is provided with a blowing plate (2), one side of the front end of the inner cavity of the device body (1) is provided with a guide plate one (3), the other side of the front end of the inner cavity of the device body (1) is provided with a guide plate two (11), the blowing plate (2), the guide plate one (3) and the guide plate two (11) divide the inner cavity of the device body (1) into a detection cavity one (37), a detection cavity two (38) and a power cavity (39), the middle part of the power cavity (39) is movably connected with a lead screw (17), the middle part of the bottom of the guide plate one (3) and the guide plate two (11) is provided with a lower clamp, the middle part of the guide plate one (3) and the guide plate two (11) is provided with a guide groove (19), the inner cavity of the guide groove (19) is movably connected with an upper clamp, the rear end of the upper clamp in the detection cavity one (37) is connected with a connecting rod one (36) through a tension sensor (40), the other end of the connecting rod one (36) is connected with a double-head cylinder one (35), the two output shaft ends of the double-head cylinder one (35) are fixedly connected with opening and closing blocks one (34), the middle part of the inner side of the opening and closing blocks one (34) is provided with a semicircular hole one, and the inner wall of the circular cavity formed by the two semicircular holes one is provided with an internal thread matched with the lead screw (17); the rear end of the upper clamp in the detection cavity two (38) is connected with a connecting rod two (25) through another tension sensor (40), the other end of the connecting rod two (25) is connected with a double-head cylinder two (20), the two output shaft ends of the double-head cylinder two (20) are fixedly connected with opening and closing blocks two (21), the middle part of the inner side of the opening and closing blocks two (21) is provided with a semicircular hole two, and the inner wall of the circular cavity formed by the two semicircular holes two is provided with an internal thread matched with the lead screw (17); the bottom end of the inner cavity of the guide groove (19) is fixedly connected with a positioning block (10); the bottom of the upper clamp is fixedly connected with an electromagnet one (26) and a buffer pad, and the top of the positioning block (10) is fixedly connected with an electromagnet two (23).

2. The geogrid performance detection device according to claim 1, characterized in that: The top of the inner cavity of the detection cavity one (37) and the detection cavity two (38) is provided with a pressure relief valve (6), the side of the detection cavity one (37) and the detection cavity two (38) is provided with a through hole (4), the outer side of the through hole (4) is provided with a collection box (7), and the collection box (7) is arranged opposite to the blowing plate (2); the front end of the detection cavity one (37) and the detection cavity two (38) is provided with an opening and closing door (5).

3. The geogrid performance detection device according to claim 1, characterized in that: One side of the power cavity (39) is provided with a blowing structure, the blowing structure comprises a blower (13) and a constant temperature water tank (12), the inner cavity of the constant temperature water tank (12) is provided with a heat exchange pipe (15), the air inlet end of the heat exchange pipe (15) is connected with the air outlet end of the blower (13), the air inlet end of the blower (13) is fixedly connected with an air inlet pipe (14), the other end of the air inlet pipe (14) extends to the outside of the device body (1), one side of the inner cavity of the blowing plate (2) is fixedly connected with a connecting pipe (8), the other end of the heat exchange pipe (15) is connected with the connecting pipe (8).

4. The geogrid performance detection device according to claim 1, characterized in that: The servo motor one (16) is fixedly connected in the power cavity (39), and the lead screw (17) is driven by the servo motor one (16).

5. The geogrid performance testing apparatus according to claim 1, wherein: The bottom of the inner cavity of the guide groove (19) is connected with the positioning block (10) through the telescopic plate (9), recesses are arranged on both sides of the top of the inner cavity of the guide groove (19), the inner cavities of the recesses are fixedly connected with the electric telescopic rods (24), the output shafts of the electric telescopic rods (24) are fixedly connected with the sealing plates (18), the sealing plates (18) are movably connected with the inner cavities of the recesses, and the top of the upper clamp is at the same height as the bottom of the sealing plate (18) when the upper clamp contacts the positioning block (10).

6. The geogrid performance testing apparatus of claim 1, wherein: The upper clamp and the lower clamp each comprise a clamp body (22), a positioning plate (33) connected with the clamp body (22) away from the lead screw (17), and a pressing plate (27) movably connected with the positioning plate (33), the pressing plate (27) is located on the side of the clamp body (22) away from the lead screw (17), the pressing plate (27) is connected with the clamp body (22) through a connecting structure, the clamp body (22) in the upper clamp is movably connected with the guide groove (19), and the clamp body (22) in the lower clamp is fixedly connected with the guide plate one (3) or the guide plate two (11).

7. The geogrid performance testing apparatus of claim 5, wherein: The connecting structure comprises a ball screw (32) connected with the clamp body (22) away from the positioning block (10), a ball nut (30) threadedly connected with the outer ring of the ball screw (32), a rotating shaft (28) movably connected with the ball nut (30), a servo motor two (29) fixedly connected with the ball nut (30), and a servo motor three (31) fixedly connected with the clamp body (22) away from the positioning block (10), the output shaft of the servo motor two (29) is fixedly connected with the rotating shaft (28), the rotating shaft (28) is fixedly connected with the pressing plate (27), and the ball screw (32) is driven by the servo motor three (31).

8. The geogrid performance testing apparatus of claim 6, wherein: The positioning plate (33) is L-shaped, the horizontal end of the positioning plate (33) is located on the side of the clamp body (22) away from the positioning block (10), and the vertical end of the positioning plate (33) is located on the side of the clamp body (22) away from the blowing plate (2).

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