An automated sealant fatigue testing device

Abstract

The present invention discloses an automated sealant fatigue test device, including a test bench, wherein the test bench is fixedly connected to a drive box through a rod, the bottom wall of the drive box is penetrated and fixedly connected to a liquid box, the upper surface of the test bench is fixedly connected to three fixed seats, the test bench and the fixed seat are penetrated and fixedly connected to a third tube, the third tube and the test bench are penetrated and fixedly connected to a fourth tube, a piston is sealed and slidably connected in the liquid box, a first threaded barrel is fixedly connected between two opposite inner side walls of the liquid box, and the first threaded barrel is threadedly connected to a first screw. The advantage is that the device in the present invention can perform three groups of fatigue tests at the same time, and can perform axial and radial fatigue tests at the same time, which greatly improves the test efficiency and makes it easier to compare the state of the sealant under different environments, thereby obtaining better test efficiency, and can simulate different working environments, making it more applicable.

Description

Technical Field

[0001] The invention relates to the technical field of sealant testing, and in particular to an automated sealant fatigue testing device. Background Art

[0002] Sealant is one of the common colloids. It is a sealing material that deforms with the shape of the sealing surface, is not easy to flow, and has a certain degree of adhesion. The application scenarios of sealants are diverse. Sealant is widely used in construction, transportation, electronic instruments and components and other fields. When choosing sealants, it is necessary to consider the specific application scenarios and needs. Sealant is mainly used to fill the gaps between components to ensure the sealing of the gaps between components and avoid leakage. Since sealants are usually used in a vibrating environment, in a vibrating environment, sealants will be subjected to axial tensile force or radial shear force. In long-term vibration, sealants may experience fatigue fracture, thereby affecting the sealing effect. In the production process of sealants, fatigue testing of sealants is also an important test to measure the performance of a sealant.

[0003] In the prior art, the existing fatigue test device can often only perform one fatigue test at a time. The test efficiency is low and it cannot achieve a good comparison effect. The direction of the test shear force cannot be freely adjusted, and its use is relatively limited. At the same time, the vibration amplitude cannot be freely adjusted, and it is impossible to simulate the conditions under different vibration environments. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the prior art and to propose an automated sealant fatigue testing device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An automated sealant fatigue testing device comprises a test bench, wherein the test bench is fixedly connected to a drive box via a rod, a liquid box is fixedly connected to the bottom wall of the drive box, three fixed seats are fixedly connected to the upper surface of the test bench, a third tube is fixedly connected to the test bench and each of the fixed seats, a fourth tube is fixedly connected to each of the third tubes and the test bench, a piston is sealingly and slidingly connected in the liquid tank, a mounting plate is fixedly connected between two opposite inner side walls of the liquid tank, a first threaded barrel is rotatably connected to the mounting plate via a bearing, the first threaded barrel is threadedly connected to a first screw, the first screw is fixedly connected to the upper surface of the piston, and a testing mechanism is provided on the test bench.

[0007] Further, the test mechanism includes two sliding grooves, which are opened on the test bench, and the test bench is slidably connected to two sliders through the sliding grooves, and two track rings are fixedly connected to the upper surface of the test bench, and the track ring is rotatably connected to a rotating ring through a bearing, and the rotating ring and the corresponding slider are jointly penetrated and fixedly connected with a first tube, and the bottom wall of the liquid tank is penetrated and fixedly connected with a second tube, and the first tube and the second tube are both sealed and slidably connected with sliding columns, and the side walls of the sliding columns are fixedly connected with force-sensitive resistors, and the side walls of the force-sensitive resistors are fixedly connected with driving columns, one of the driving columns is fixedly connected to the second test seat, and the other two driving columns are fixedly connected to the fixing ring, and the fixing ring is rotatably connected to the first test seat through a bearing, and the two opposite side walls of the liquid tank and the corresponding track rings are jointly penetrated and fixedly connected with a fifth tube, and the liquid tank, the first tube, the second tube, the track ring, and the fifth tube are all filled with hydraulic oil.

[0008] Furthermore, a driving mechanism is arranged in the driving box, and the driving mechanism includes two rotating shafts, and the two rotating shafts are rotatably connected with the two side walls opposite to the driving box respectively through bearings, a gear disk is fixedly connected to the upper surface of the first threaded cylinder, and a rotating block is fixedly connected to one end of the rotating shaft located in the driving box, and the rotating block is a hollow structure, and a servo motor is fixedly connected to the side wall of the driving box through a bracket, and the output shaft of the servo motor is fixedly connected to one of the rotating shafts, and a sixth tube is fixedly connected to the two rotating blocks through a common penetration, and a plurality of column grooves are opened in the rotating block, and a limiting column is sealingly and slidably connected in the column groove, and a top column is fixedly connected to the side wall of the limiting column, and the top column extends through and extends to the outside of the rotating block and is fixedly connected to a tooth seat, and a plurality of tooth blocks are fixedly connected to the side wall of the tooth seat.

[0009] Furthermore, the drive box is provided with an adjustment mechanism, which includes a hollow sliding sleeve, the sliding sleeve is fixedly connected to the inner wall of the drive box, the sixth tube is rotatably connected to the sliding sleeve through a bearing, a section of the sixth tube located in the sliding sleeve is provided with a plurality of through holes, a moving block is sealingly and slidably connected in the sliding sleeve, a second threaded cylinder is rotatably connected to the side wall of the drive box through a bearing, the second threaded cylinder is threadedly connected to a second screw, the second screw is fixedly connected to the side wall of the moving block, a plurality of inlet and outlet holes are provided in the rotating block, the inlet and outlet holes are communicated with the corresponding column grooves, and the rotating block, the sixth tube, the moving block, the inlet and outlet holes and the column groove are all filled with hydraulic oil.

[0010] Furthermore, a locking mechanism is provided in the slider, and the locking mechanism includes a fixing groove, which is opened in the slider, an electric push rod is fixedly connected to the inner side wall of the fixing groove, a locking block is fixedly connected to the output end of the electric push rod, rubber pads are glued to the side wall of the locking block and the inner side wall of the sliding groove, and the electric push rod is electrically connected to the servo motor through a wire.

[0011] Furthermore, a counting mechanism is provided at the test bench and the drive box, and the counting mechanism includes a concave block, and the concave block is fixedly connected to the inner wall of the drive box, and the two opposite inner walls of the concave block are respectively fixedly connected with an infrared transmitter and an infrared receiver, and one of the side walls of the rotating shaft is fixedly connected with a baffle, and three displays are fixedly connected to the upper surface of the test bench, and the infrared transmitter, display, and force-sensitive resistor are connected through a PLC control circuit.

[0012] Furthermore, a pressure relief valve is provided in the inlet and outlet hole, and a one-way valve is provided in both the third pipe and the fourth pipe.

[0013] Furthermore, an adjusting wheel is fixedly connected through one end of the second threaded cylinder located outside the driving box, a pointer is provided on the side wall of the adjusting wheel, and scale lines are engraved on the side wall of the driving box.

[0014] The present invention has the following advantages:

[0015] 1. Three groups of fatigue tests can be carried out on the test bench at the same time. Three groups of tests can be completed in one test, so there is no need to carry out one group of tests at a time as in the existing technology, which greatly improves the test efficiency. At the same time, the three groups of tests are carried out synchronously, which can be compared more clearly;

[0016] 2. The position of the slider can be adjusted freely, so that the direction of the radial shear force can be adjusted freely and automatically, so that fatigue tests of shear forces in different directions can be carried out, making the device more applicable;

[0017] 3. The servo motor drives the rotating shaft to rotate, and then the six tubes are connected to make the two rotating blocks rotate synchronously. The gear blocks on the two rotating blocks are alternately meshed with the toothed disc, so that the toothed disc reciprocates. The hydraulic oil is driven to make the sliding column reciprocate, driving the first test seat and the second test seat to reciprocate, thereby simulating the vibration force of the sealant. By turning the adjusting wheel, the number of gear blocks meshing with the toothed disc can be adjusted, thereby adjusting the reciprocating stroke size, thereby adjusting the amplitude size, so that the device can freely adjust the amplitude size, thereby simulating different usage conditions of the sealant for testing;

[0018] 4. By adjusting the pointer on the wheel and the scale line on the side wall of the drive box, the position of the moving block can be adjusted more accurately, so as to ensure that the specified number of tooth blocks can be engaged with the toothed disc, thereby ensuring the accuracy of the test;

[0019] 5. During the rotation of the shaft, the baffle blocks the infrared ray once, that is, rotates one circle and completes one reciprocating motion, so that the count result on the display is increased by one. During the test, the number of vibrations can be displayed in real time on the display, so that the test personnel can grasp the number of vibrations more clearly and observe the state of the sealant under different vibration times;

[0020] 6. When the test starts, the servo motor starts and the electric push rod starts synchronously, so that the locking block presses against the inner wall of the sliding groove with a certain pressure, and the position of the slider is locked by friction to prevent the slider from moving during the test, thereby changing the direction of the shear force and affecting the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of an automated sealant fatigue testing device proposed by the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of an automated sealant fatigue testing device proposed by the present invention in longitudinal section;

[0023] Figure 3 for Figure 2 A in the enlarged view;

[0024] Figure 4 This is a schematic diagram of the internal structure of another longitudinal section of an automated sealant fatigue testing device proposed by the present invention;

[0025] Figure 5 for Figure 4 A partial enlarged view of the

[0026] Figure 6 This is a schematic diagram of the structure of a transfer block and a toothed disc in an automated sealant fatigue test device proposed by the present invention;

[0027] Figure 7 This is a schematic diagram of the internal structure of a transfer block and a sixth tube in an automated sealant fatigue test device proposed by the present invention;

[0028] Figure 8 This is a schematic diagram of the internal structure of a transfer block in an automated sealant fatigue testing device proposed by the present invention.

[0029] In the figure: 1, test bench; 2, fixed seat; 3, track ring; 4, sliding groove; 5, slider; 6, rotating ring; 7, first tube; 8, drive box; 9, liquid tank; 10, second tube; 11, slide column; 12, force sensitive resistor; 13, drive column; 14, fixed ring; 15, first test seat; 16, second test seat; 17, third tube; 18, fourth tube; 19, mounting plate; 20, first threaded cylinder; 21, first screw; 22, piston; 23, toothed disc; 24, fifth tube; 25, rotating shaft ; 26. Rotating block; 27. Servo motor; 28. Column groove; 29. ​​Limiting column; 30. Top column; 31. Gear seat; 32. Gear block; 33. Inlet and outlet holes; 34. Pressure relief valve; 35. Sleeve; 36. Sixth tube; 37. Second threaded cylinder; 38. Adjusting wheel; 39. Second screw; 40. Moving block; 41. Through hole; 42. Concave block; 43. Baffle; 44. Infrared transmitter; 45. Infrared receiver; 46. Display; 47. Fixed groove; 48. Electric push rod; 49. Locking block. DETAILED DESCRIPTION

[0030] Reference Figure 1-8 An automated sealant fatigue test device comprises a test bench 1, a driving box 8 is fixedly connected to the test bench 1 through a rod, a liquid tank 9 is fixedly connected to the bottom wall of the driving box 8, three fixing seats 2 are fixedly connected to the upper surface of the test bench 1, a third tube 17 is fixedly connected to the test bench 1 and each fixing seat 2, each third tube 17 is fixedly connected to the test bench 1 through a fourth tube 18, a piston 22 is sealingly and slidably connected in the liquid tank 9, a mounting plate 19 is fixedly connected between two opposite inner side walls of the liquid tank 9, a first threaded barrel 20 is rotatably connected to the mounting plate 19 through a bearing, a first screw 21 is threadedly connected to the first threaded barrel 20, and the first screw 21 is fixedly connected to the upper surface of the piston 22, and a testing mechanism is provided on the test bench 1.

[0031] The testing mechanism includes two sliding grooves 4, which are provided on the testing platform 1 and are arc-shaped (such as Figure 1As shown), and the arc center of the sliding groove 4 and the center of the circle of the corresponding fixed seat 2 are located on the same axis, the test bench 1 is slidably connected to two sliders 5 through the sliding groove 4, and two track rings 3 are fixedly connected to the upper surface of the test bench 1, and the track ring 3 is rotatably connected to the rotating ring 6 through a bearing, and the rotating ring 6 and the corresponding slider 5 are jointly penetrated and fixedly connected with a first tube 7, and the bottom wall of the liquid tank 9 is penetrated and fixedly connected with a second tube 10, and the first tube 7 and the second tube 10 are both sealed and slidably connected with a sliding column 11, and the side wall of the sliding column 11 is fixedly connected to a force-sensitive resistor 12, and the side wall of the force-sensitive resistor 12 is fixedly connected to a driving column 13, one of the driving columns 13 is fixedly connected to a second test seat 16, and the other two driving columns 13 are fixedly connected to a fixing ring 14, and the driving column 13 arranged in the second tube 10 is fixedly connected to the second The test seat 16 is provided, and the driving column 13 arranged in the first tube 7 is fixedly connected with the fixing ring 14, and the fixing ring 14 is rotatably connected with the first test seat 15 through the bearing. The two opposite side walls of the liquid tank 9 and the corresponding track ring 3 are jointly penetrated and fixedly connected with the fifth tube 24. The liquid tank 9, the first tube 7, the second tube 10, the track ring 3 and the fifth tube 24 are all filled with hydraulic oil. Through the three fixing seats 2 and the first test seat 15 and the second test seat 16, the device can carry out three groups of fatigue tests at the same time, and can carry out fatigue tests of axial and radial vibrations at the same time, without the need to carry out individual tests, which greatly improves the test efficiency. Moreover, the three groups of tests are carried out simultaneously, and the sealant status in different test processes can be compared more conveniently, so as to more comprehensively know the performance of the sealant under the working state.

[0032] It is worth mentioning that, according to the direction of the required shear force, the position of the slider 5 is adjusted, and the slider 5 is slid to the specified position. Due to the adhesion of the sealant, the first test seat 15 will not rotate at this time, but the fixing ring 14 rotates around the first test seat 15, so that the device can freely adjust the direction of shear force application, and fatigue tests of shear forces in different directions can be performed, making the device more applicable.

[0033] A driving mechanism is arranged in the driving box 8, and the driving mechanism includes two rotating shafts 25, and the two rotating shafts 25 are respectively connected to the two opposite side walls of the driving box 8 through bearings, and the upper surface of the first threaded cylinder 20 is fixedly connected to a toothed disc 23, and one end of the rotating shaft 25 located in the driving box 8 is fixedly connected to a rotating block 26, and the rotating block 26 is a hollow structure. The side wall of the driving box 8 is fixedly connected to a servo motor 27 through a bracket, and the servo motor 27 can accurately control its rotation angle, so that its rotation is always a full circle, thereby ensuring complete reciprocating motion, and the output shaft of the servo motor 27 is fixedly connected to one of the rotating shafts 25, and the two rotating blocks 26 are commonly connected to a sixth tube 36 (such as Figure 7As shown in the figure, the rotating block 26 is provided with a plurality of column grooves 28, and the column grooves 28 are sealed and slidably connected with the limit column 29, and the side wall of the limit column 29 is fixedly connected with the top column 30, which extends through the outside of the rotating block 26 and is fixedly connected with the tooth seat 31, and the side wall of the tooth seat 31 is fixedly connected with a plurality of tooth blocks 32, and the servo motor 27 rotates through a rotating shaft 25 to drive one of the rotating blocks 26 to rotate, and then through the connection of the sixth tube 36, the two rotating blocks 26 rotate synchronously, so that the tooth blocks 32 on the two rotating blocks 26 are alternately meshed with the tooth disk 23, and because the two rotating blocks 26 are relative to the tooth disk 23 Symmetrically arranged, the two rotating blocks 26 are symmetrical with respect to the geometric center of the sixth tube 36, and alternating engagement will cause the toothed disc 23 to reciprocate, thereby driving the first threaded cylinder 20 to reciprocate, and the first screw rod 21 drives the piston 22 to reciprocate through the threaded connection, and the piston 22 causes the sliding column 11 to reciprocate through the hydraulic oil, and the reciprocating motion of the sliding column 11 drives the driving column 13 to reciprocate through the force-sensitive resistor 12, thereby causing the first test seat 15 and the second test seat 16 to reciprocate in different directions, simulating a vibration environment, thereby performing fatigue tests on the sealant with vibrations in different directions.

[0034] The drive box 8 is provided with an adjustment mechanism, which includes a hollow sleeve 35, the sleeve 35 is fixedly connected to the inner wall of the drive box 8, the sixth tube 36 is rotatably connected to the sleeve 35 through a bearing, and a section of the sixth tube 36 located in the sleeve 35 is provided with a plurality of through holes 41 (such as Figure 7 and Figure 5 As shown in FIG. 1 , the through hole 41 is provided so that the hydraulic oil in the sleeve 35 can smoothly enter the sixth pipe 36. The sleeve 35 is sealed and slidably connected with a moving block 40 (as shown in FIG. 1 ). Figure 2 As shown, the side wall of the drive box 8 is rotatably connected to a second threaded cylinder 37 through a bearing, and the second threaded cylinder 37 is threadedly connected to a second screw 39, and the second screw 39 is fixedly connected to the side wall of the moving block 40. A plurality of inlet and outlet holes 33 (such as Figure 8As shown in the figure, the inlet and outlet holes 33 are connected with the corresponding column grooves 28, and the rotating block 26, the sixth tube 36, the moving block 40, the inlet and outlet holes 33, and the column grooves 28 are all filled with hydraulic oil. According to the required amplitude, the adjusting wheel 38 is rotated, and the rotation of the adjusting wheel 38 will cause the second threaded cylinder 37 to rotate, and the second screw 39 drives the moving block 40 to slide through the threaded connection. When the moving block 40 slides, the hydraulic oil will be pumped into each column groove 28 through the through hole 41, the sixth tube 36, and the inlet and outlet holes 33, so that the limit column 29 slides and drives the top column 30 to move, so that the tooth seats 31 leave the rotating block 26 one by one, and the number of tooth seats 31 required to slide out is adjusted. The different number of tooth seats 31 sliding out will determine how many tooth blocks 32 are engaged with the tooth disc 23. The more the number of engagements, the greater the rotation angle of the tooth disc 23, and the greater the stroke of the reciprocating motion, that is, the greater the amplitude, and vice versa. The smaller the amplitude, the device can freely adjust the amplitude, so that different usage conditions of the sealant can be simulated for testing.

[0035] It is worth mentioning that the adjustment of the amplitude and the direction of shear force application can be carried out while waiting for the sealant to harden after injection, making use of the waiting time to avoid wasting time alone, and further improving the test efficiency.

[0036] A locking mechanism is provided in the slider 5, and the locking mechanism includes a fixing groove 47, which is opened in the slider 5, and an electric push rod 48 is fixedly connected to the inner side wall of the fixing groove 47, and a locking block 49 is fixedly connected to the output end of the electric push rod 48, and the side wall of the locking block 49 and the inner side wall of the sliding groove 4 are both glued with rubber pads. The provision of the rubber pad, on the one hand, ensures that there is a certain friction damping force when the slider 5 slides in the sliding groove 4, so that after the position of the slider 5 is determined, it can resist a certain external force and does not change its position. On the other hand, the friction between the locking block 49 and the inner wall of the sliding groove 4 is increased by the provision of the rubber pad, so that the position of the slider 5 is locked by the friction force. The electric push rod 48 is electrically connected to the servo motor 27 through a wire. The electrical connection of the wire ensures that when the servo motor 27 is powered on, the electric push rod 48 is also powered on and extended synchronously, that is, when the servo motor 27 is powered on to start the test, the electric push rod 48 is also synchronously extended to lock the position of the slider 5, so as to avoid the position of the slider 5 changing during the test and affecting the test results.

[0037] A counting mechanism is provided at the test bench 1 and the drive box 8, and the counting mechanism includes a concave block 42, and the concave block 42 is fixedly connected to the inner wall of the drive box 8, and the two opposite inner walls of the concave block 42 are respectively fixedly connected with an infrared transmitter 44 and an infrared receiver 45, and one of the side walls of the rotating shaft 25 is fixedly connected with a baffle 43, and three displays 46 are fixedly connected to the upper surface of the test bench 1, and the infrared transmitter 44, the display 46, and the force-sensitive resistor 12 are connected through a PLC control circuit. The PLC control circuit can make the reading on the display 46 increase by one after the infrared ray received by the infrared transmitter 44 is blocked once, and at the same time, when the resistance value of the force-sensitive resistor 12 does not change, the reading on the corresponding display 46 is fixed and no longer increases.

[0038] It should be noted that when the sealant is not completely broken, when the sliding column 11 drives the driving column 13 to move, the force-sensitive resistor 12 between the sliding column 11 and the driving column 13 will be subjected to periodic pressure, thereby causing the resistance value of the force-sensitive resistor 12 to change. When the sealant breaks, the movement of the driving column 13 will not encounter resistance, thereby causing the pressure on the force-sensitive resistor 12 to remain unchanged and the resistance value will not change.

[0039] A pressure relief valve 34 is provided in the inlet and outlet hole 33. The pressure relief valve 34 can be opened when the pressure reaches a certain value, and the opening pressure of the pressure relief valve 34 is as follows: Figure 8 In the state, it gradually increases in the clockwise direction, so as to ensure that each tooth seat 31 slides out one by one. A one-way valve is arranged in the third tube 17 and the fourth tube 18. The one-way valve in the third tube 17 only allows objects to be discharged from the third tube 17 to the outside, and it is arranged at the through connection between the third tube 17 and the fixed seat 2. The one-way valve in the fourth tube 18 only allows objects to enter the third tube 17 from the fourth tube 18. The sealant is injected between the fixed seat 2 and the first test seat 15 or the second test seat 16 through the third tube 17. After the injection is completed, air can be pumped in through the fourth tube 18 to pump out the excess sealant in the third tube 17 to avoid the sealant blocking the third tube 17 and affecting the next injection of the sealant, while avoiding the waste of the sealant.

[0040] An adjusting wheel 38 is fixedly connected to one end of the second threaded cylinder 37 located outside the driving box 8. A pointer is provided on the side wall of the adjusting wheel 38, and scale lines are engraved on the side wall of the driving box 8. By coordinating the pointer on the adjusting wheel 38 with the scale lines on the side wall of the driving box 8, the position of the moving block 40 can be accurately adjusted when the adjusting wheel 38 is rotated, thereby ensuring that the required number of tooth blocks 32 are engaged with the toothed disc 23.

[0041] In the present invention, sealant is injected into the third tube 17 through an injection device, and the sealant flows along the third tube 17 into between the fixing seat 2 and the first test seat 15 or the second test seat 16. When the sealant is filled, the injection is stopped, and air is injected through the fourth tube 18 to pump out the remaining sealant in the third tube 17, and then the sealant between the fixing seat 2 and the first test seat 15 or the second test seat 16 is waited for to harden.

[0042] While waiting for hardening, first adjust the position of the slider 5 according to the direction of the required shear force, and slide the slider 5 to the specified position. Due to the adhesion of the sealant, the first test seat 15 will not rotate at this time, but the fixing ring 14 will rotate around the first test seat 15 to avoid affecting the hardening of the sealant when rotating to adjust the angle.

[0043] After the shear direction is adjusted, the adjusting wheel 38 is rotated according to the required amplitude. The adjusting wheel 38 is accurately rotated according to the pointer and the scale line. The rotation of the adjusting wheel 38 will cause the second threaded cylinder 37 to rotate, and the second screw 39 will drive the moving block 40 to slide through the threaded connection. The sliding of the moving block 40 will pump the hydraulic oil into each column groove 28 through the through hole 41, the sixth tube 36, and the inlet and outlet holes 33, so that the limit column 29 slides and drives the top column 30 to move, so that the tooth seats 31 leave the rotating block 26 one by one, and the required number of tooth seats 31 sliding out is adjusted.

[0044] After the adjustment is completed and the sealant is hardened, the servo motor 27 is turned on. When the servo motor 27 is turned on, the electric push rod 48 is synchronously energized and extended, so that the locking block 49 and the inner wall of the sliding groove 4 are pressed against each other with a certain pressure, and the position of the slider 5 is locked by the friction between the two.

[0045] The servo motor 27 rotates through a rotating shaft 25 to drive one of the rotating blocks 26 to rotate, and then through the connection of the sixth tube 36, the two rotating blocks 26 rotate synchronously, so that the tooth blocks 32 on the two rotating blocks 26 alternately mesh with the toothed disc 23. Since the two rotating blocks 26 are symmetrically arranged relative to the toothed disc 23, the alternating meshing will cause the toothed disc 23 to reciprocate, thereby driving the first threaded cylinder 20 to reciprocate. The first screw rod 21 drives the piston 22 to reciprocate through the threaded connection, and the piston 22 causes the sliding column 11 to reciprocate through the hydraulic oil. The reciprocating motion of the sliding column 11 drives the driving column 13 to reciprocate through the force sensitive resistor 12, so that the first test seat 15 and the second test seat 16 reciprocate in different directions to simulate the vibration environment, thereby performing fatigue tests on the sealant with vibrations in different directions.

[0046] During the test, the infrared transmitter 44 emits infrared rays, and the infrared receiver 45 receives infrared rays. During the rotation of the shaft 25, the baffle 43 rotates therewith. With each rotation, the first test seat 15 and the second test seat 16 make a reciprocating motion, and the baffle 43 blocks the infrared rays. Each time the infrared rays are blocked, the infrared receiver 45 increases the reading on the display 46 by one, thereby recording the number of vibrations.

[0047] When the sealant is not completely broken, when the sliding column 11 drives the driving column 13 to move, the force-sensitive resistor 12 between the sliding column 11 and the driving column 13 will be subjected to periodic pressure, thereby causing the resistance value of the force-sensitive resistor 12 to change. When the sealant is broken, the movement of the driving column 13 will not be resisted, so that the pressure on the force-sensitive resistor 12 remains unchanged, and the resistance value will not change. At this time, the reading of the infrared display 46 will not increase, and the current reading will be retained. This reading is the reading of the corresponding sealant break. When the readings of the three displays 46 do not change, it means that the sealant is completely broken. At this time, the machine can be stopped and the data can be recorded.

Claims

1. An automated sealant fatigue test device, comprising a test bench (1), characterized in that: The test bench (1) is fixedly connected to a drive box (8) via a rod, a liquid box (9) is fixedly connected to the bottom wall of the drive box (8), three fixed seats (2) are fixedly connected to the upper surface of the test bench (1), a third tube (17) is fixedly connected to the test bench (1) and each fixed seat (2), each of the third tubes (17) and the test bench (1) is fixedly connected to a fourth tube (18), a piston (22) is sealingly and slidably connected to the inside of the liquid box (9), a mounting plate (19) is fixedly connected between two opposite inner side walls of the liquid box (9), a first threaded barrel (20) is rotatably connected to the mounting plate (19) via a bearing, the first threaded barrel (20) is threadedly connected to a first screw (21), the first screw (21) is fixedly connected to the upper surface of the piston (22), and a testing mechanism is provided on the test bench (1); The test mechanism comprises two sliding grooves (4), wherein the sliding grooves (4) are provided on the test bench (1), and the test bench (1) is slidably connected to two sliders (5) via the sliding grooves (4). Two track rings (3) are fixedly connected to the upper surface of the test bench (1), and the track rings (3) are rotatably connected to rotating rings (6) via bearings. The rotating rings (6) and the corresponding sliders (5) are jointly penetrated and fixedly connected to a first tube (7), and the bottom wall of the liquid tank (9) is penetrated and fixedly connected to a second tube (10), and sliding columns (11) are both sealed and slidably connected inside the first tube (7) and the second tube (10), and the sliding columns (11) are A force-sensitive resistor (12) is fixedly connected to the side wall, and a driving column (13) is fixedly connected to the side wall of the force-sensitive resistor (12), one of the driving columns (13) is fixedly connected to a second test seat (16), and the other two driving columns (13) are fixedly connected to a fixing ring (14), and the fixing ring (14) is rotatably connected to the first test seat (15) via a bearing. Two opposite side walls of the liquid tank (9) and the corresponding track ring (3) are jointly penetrated and fixedly connected to a fifth tube (24), and the liquid tank (9), the first tube (7), the second tube (10), the track ring (3), and the fifth tube (24) are all filled with hydraulic oil; The drive box (8) is provided with a drive mechanism, the drive mechanism comprising two rotating shafts (25), the two rotating shafts (25) being rotatably connected to two opposite side walls of the drive box (8) respectively through bearings, a toothed disc (23) being fixedly connected to the upper surface of the first threaded cylinder (20), a rotating block (26) being fixedly connected to one end of the rotating shaft (25) located in the drive box (8), the rotating block (26) being a hollow structure, a servo motor (27) being fixedly connected to the side wall of the drive box (8) through a bracket, the servo motor The output shaft of the machine (27) is fixedly connected to one of the rotating shafts (25); the two rotating blocks (26) are penetrated and fixedly connected with a sixth tube (36); the rotating block (26) is provided with a plurality of column grooves (28); the column grooves (28) are sealed and slidably connected with a limit column (29); the side wall of the limit column (29) is fixedly connected with a top column (30); the top column (30) penetrates and extends to the outside of the rotating block (26) and is fixedly connected with a gear seat (31); the side wall of the gear seat (31) is fixedly connected with a plurality of gear blocks (32); The drive box (8) is provided with an adjustment mechanism, the adjustment mechanism comprising a hollow sliding sleeve (35), the sliding sleeve (35) being fixedly connected to the inner side wall of the drive box (8), the sixth tube (36) being rotatably connected to the sliding sleeve (35) via a bearing, a section of the sixth tube (36) located in the sliding sleeve (35) being provided with a plurality of through holes (41), a moving block (40) being sealingly slidably connected in the sliding sleeve (35), a second threaded barrel (37) being rotatably connected to the side wall of the drive box (8) via a bearing, the second threaded barrel (37) being threadably connected to a second screw rod (39), the second screw rod (39) being fixedly connected to the side wall of the moving block (40), a plurality of inlet and outlet holes (33) being provided in the rotating block (26), the inlet and outlet holes (33) being communicated with the corresponding column grooves (28), and the rotating block (26), the sixth tube (36), the moving block (40), the inlet and outlet holes (33), and the column groove (28) are all filled with hydraulic oil; A locking mechanism is provided in the slider (5), the locking mechanism comprising a fixing groove (47), the fixing groove (47) being provided in the slider (5), an electric push rod (48) being fixedly connected to the inner side wall of the fixing groove (47), a locking block (49) being fixedly connected to the output end of the electric push rod (48), a rubber pad being glued to the side wall of the locking block (49) and the inner side wall of the sliding groove (4), and the electric push rod (48) being electrically connected to the servo motor (27) via a wire.

2. The automated sealant fatigue testing device according to claim 1, characterized in that: The test bench (1) and the drive box (8) are provided with a counting mechanism, the counting mechanism comprising a concave block (42), the concave block (42) being fixedly connected to the inner wall of the drive box (8), two opposite inner walls of the concave block (42) being respectively fixedly connected to an infrared transmitter (44) and an infrared receiver (45), one of the side walls of the rotating shaft (25) being fixedly connected to a baffle (43), and three displays (46) being fixedly connected to the upper surface of the test bench (1), and the infrared transmitter (44), the display (46) and the force-sensitive resistor (12) being connected via a PLC control circuit.

3. The automated sealant fatigue testing device according to claim 1, characterized in that: A pressure relief valve (34) is provided in the inlet and outlet hole (33), and a one-way valve is provided in each of the third pipe (17) and the fourth pipe (18).

4. The automated sealant fatigue testing device according to claim 1, characterized in that: An adjusting wheel (38) is fixedly connected to one end of the second threaded barrel (37) located outside the drive box (8), a pointer is provided on the side wall of the adjusting wheel (38), and scale lines are engraved on the side wall of the drive box (8).

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