CN116256159A - Endurance test device for simulating manual treading and test method thereof - Google Patents

Abstract

The invention relates to the technical field of test devices and discloses a endurance test device for simulating manual stepping and a test method thereof.

Description

An endurance test device and test method for simulating artificial trampling

technical field

The invention relates to the technical field of test devices, in particular to an endurance test device for simulating manual treading.

Background technique

The force durability of product parts (especially products that are often trampled by humans) is an important basis for the stability and reliability of the product, especially key switches or ground products used in environments such as frequent trampling and pressing. Once the durability Unqualified products can easily lead to safety accidents. At present, the stress durability of product parts that are often trampled on automobiles is mainly carried out through manual trampling. The disadvantage of high labor costs, and the inconsistent pedaling force each time when manually pedaling, resulting in a lack of test accuracy.

Contents of the invention

The technical problem to be solved by the present invention is to provide an endurance test device for simulating manual stepping without manual operation, ensuring consistent stepping pressure on test samples every time, and high test efficiency.

In order to achieve the above object, the present invention provides a kind of durability test device for simulating manual trampling, comprising a mobile workbench, a telescopic rod, an angle adjustment mechanism, a cylinder, pedals and a controller, one end of the telescopic rod is connected to the mobile work The top of the table is connected, and the other end of the telescopic rod is connected to one end of the cylinder through the angle adjustment mechanism, and the angle adjustment mechanism is used to adjust the angle between the cylinder and the telescopic rod. The other end of the cylinder is provided with a stepping block fixedly connected with the piston rod of the cylinder, and the stepping block is provided with a pressure sensor for detecting the pressure of the piston rod of the cylinder on the stepping block, and the cylinder is connected with a The solenoid valve that controls the action of the output shaft of the cylinder, the controller is arranged on the moving workbench, and the controller is electrically connected to the solenoid valve and the pressure sensor respectively.

As a preferred solution of the present invention, the test device also includes a fixed base and a fixed rod, one side of the fixed base is provided with a plurality of fixed holes distributed in a matrix, one end of the fixed rod is provided with a fixed block, the The fixing block is provided with a fixing post matched with the fixing hole, and the other end of the fixing rod is provided with a fixing plate.

As a preferred solution of the present invention, the included angle between the fixing plate and the horizontal plane is 30°-45°.

As a preferred solution of the present invention, the angle adjustment mechanism includes a rotating shaft, the end of the cylinder is provided with a rotating seat that is rotatably connected with the rotating shaft, and the two ends of the rotating shaft are respectively provided with limit plates, and the An arc-shaped groove is arranged on the limit plate, and the center of the arc-shaped groove is located on the axis of the rotating shaft. A fixing frame is connected to the side of the cylinder, and a locking bolt is arranged on the fixing frame. A locking bolt passes through the arc-shaped slot, and the locking bolt is connected with the limiting disk through a locking nut.

As a preferred solution of the present invention, the telescopic rod includes an outer tube and an inner tube, the outer tube is fixedly connected to the mobile workbench, the inner tube is slidably inserted in the outer tube, and the inner tube It is fixedly connected with the cylinder, and the side of the outer tube is screwed with a locking piece, and the locking piece passes through the side of the outer tube and abuts against the side of the inner tube.

As a preferred solution of the present invention, the mobile workbench is provided with a support rod that can be adjusted up and down.

As a preferred solution of the present invention, the bottom of the mobile workbench is provided with a plurality of universal rollers 12 with brake mechanisms.

Simultaneously, the present invention also provides the test method of this endurance test device, comprises the following steps:

S1: Adjust the position of the mobile workbench so that the test sample is set under the stepping block, and then adjust the position of the cylinder through the telescopic rod and the angle adjustment mechanism so that the bottom surface of the stepping block is in line with the The top surfaces of the test samples are parallel;

S2: the controller controls the solenoid valve so that the piston rod of the cylinder extends until the pressure value detected by the pressure sensor reaches the pedaling pressure required for the test;

S3: keep the state of the cylinder unchanged until the pedaling time required for the test is reached;

S4: the controller controls the solenoid valve so that the piston rod of the cylinder shrinks until the pressure value detected by the pressure sensor is zero;

S5: adding one to the accumulative test times of the controller;

S6: The controller checks whether the number of tests reaches the total number of tests, if not, repeat S2-S5, if yes, complete the test.

As a preferred solution of the present invention, in S6, if the number of tests does not reach the total number of tests, but reaches the set number of inspections, the controller prompts the tester to check the equipment and test samples, and repeat S2 after the inspection is correct. -S5.

An embodiment of the present invention is an endurance test device simulating manual trampling and its test method. Compared with the prior art, its beneficial effect is that: by adjusting the length of the telescopic rod and adjusting the angle of the cylinder through the angle adjustment structure, both can be adjusted. The position of the cylinder is used to adjust the position of the stepping block, and the combination of the telescopic rod and the angle adjustment structure makes the position of the stepping block have a wide range of adjustment, so that the stepping block can be adjusted to be located above the test sample, and at the same time, it can ensure that the bottom surface of the stepping block is in line with the test The top surface of the sample is parallel, and the cylinder drives the stepping block to press the test sample, which can simulate manual stepping, and the test efficiency is high; when the piston rod of the cylinder stretches to make the stepping block press down the test sample, the pressure sensor can detect the impact of the piston rod on the stepping block. The pressure is equivalent to the pedaling force of the pedaling block on the test sample, and the solenoid valve can control the piston rod of the cylinder to maintain a predetermined output pressure to ensure that the pedaling pressure and pedaling time of each pedaling test are consistent, making the test results more accurate.

Description of drawings

Fig. 1 is the structural diagram of a kind of endurance test device that simulates artificial trampling provided by the present invention;

Fig. 2 is the connection structural diagram of angle adjustment mechanism and cylinder of the present invention;

Fig. 3 is a connection structure diagram of another angle between the angle adjustment mechanism and the cylinder of the present invention;

In the figure, 1. Mobile workbench; 11. Support rod; 12. Universal roller; 2. Telescopic rod; 21. Outer tube; 22. Inner tube; 23. Locking member; 3. Angle adjustment mechanism; 31. Rotation Shaft; 32, limit plate; 321, arc groove; 4, cylinder; 41, rotating seat; 42, fixed frame; 43, locking bolt; 44, locking nut; 5, stepping on the pedal; 51, test sample; 6. Controller; 7. Pressure sensor; 8. Fixing seat; 9. Fixing rod; 91. Fixing block; 92. Fixing plate.

Detailed ways

The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", " The orientation or positional relationship indicated by "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of description The present invention and simplified descriptions do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as limiting the present invention. In addition, the terms "first", "second Two", "Third" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

As shown in Fig. 1, a kind of durability test device that simulates manual trampling of the preferred embodiment of the present invention includes mobile workbench 1, telescopic rod 2, angle adjustment mechanism 3, cylinder 4, pedal 5 and controller 6, telescopic rod One end of 2 is connected to the top of mobile workbench 1, and the other end of telescopic rod 2 is connected to one end of cylinder 4 through angle adjustment mechanism 3. Angle adjustment mechanism 3 is used to adjust the angle between cylinder 4 and telescopic rod 2, and cylinder 4 The other end of the cylinder is provided with a stepping block fixedly connected to the piston rod of the cylinder 4, the stepping block is provided with a pressure sensor 7 for detecting the pressure of the piston rod of the cylinder 4 on the stepping block, and the cylinder 4 is connected with an output shaft for controlling the cylinder 4 Action electromagnetic valve 61, the controller 6 is arranged on the mobile workbench 1, and the controller 6 is electrically connected with the electromagnetic valve 61 and the pressure sensor 7 respectively. The power supply of the controller 6 includes a single-chip controller 6, a relay and a display, the single-chip controller 6 is electrically connected to the solenoid valve 61 through a relay, and the display is electrically connected to the single-chip controller 6.

The working principle of this embodiment is: by adjusting the length of the telescopic rod 2 and adjusting the angle of the cylinder 4 through the angle adjustment structure, the position of the cylinder 4 can be adjusted to adjust the position of the stepping block. Both the telescopic rod 2 and the angle adjustment structure Cooperate so that the position of the stepping block has a wide range of adjustment, so that the stepping block is adjusted to be positioned above the test sample 51, while ensuring that the bottom surface of the stepping block is parallel to the top surface of the test sample 51, and the cylinder 4 drives the stepping block to press down on the test sample 51 , it can simulate manual stepping, and the test efficiency is high; when the piston rod of the cylinder 4 is stretched so that the stepping block presses the test sample 51, the pressure sensor 7 can detect the pressure of the piston rod on the stepping block, which is equivalent to the stepping block on the test sample 51 pedaling force, and the solenoid valve 61 can control the piston rod of the cylinder 4 to maintain a predetermined output pressure to ensure that the pedaling pressure and the pedaling time of each pedaling test are consistent, making the test results more accurate.

Exemplarily, the test device also includes a fixed base 8 and a fixed rod 9, one side of the fixed base 8 is provided with a plurality of fixed holes distributed in a matrix, one end of the fixed rod 9 is provided with a fixed block 91, and the fixed block 91 is provided with There are fixed columns matched with the fixed holes, multiple fixed columns can be provided, so that the connection between the fixed block 91 and the fixed seat 8 is more stable, the other end of the fixed rod 9 is provided with a fixed plate 92, and the test sample 51 is fixed on the fixed plate 92 On the other hand, if it is fixed by bolts, the fixing column is inserted in different fixing holes, the installation position of the fixing rod 9 can be adjusted, thereby adjusting the position of the test sample 51, and the test sample is connected with the fixing seat 8 through the fixing rod 9, The setting of the fixing seat 8 can prevent the test sample 51 from shifting when it is under pressure.

Exemplarily, the angle between the fixed plate 92 and the horizontal plane is 30° to 45°, so that after the test sample 51 is fixed on the fixed plate 92, it is in an inclined state. When the pedal 5 presses down on the test sample 51, the fixed The force on the plate 92 in the vertical direction reduces the possibility of the fixed rod 9 breaking under force.

Exemplarily, as shown in Figures 2-3, the angle adjustment mechanism 3 includes a rotating shaft 31, and the end of the cylinder 4 is provided with a rotating seat 41 that is rotatably connected to the rotating shaft 31, so as to realize the rotatable adjustment angle of the cylinder 4. The two ends of shaft 31 are respectively provided with limit plate 32, and limit plate 32 is provided with arc-shaped groove 321, and the circle center of arc-shaped groove 321 is positioned on the axis of rotating shaft 31, and the side portion of cylinder 4 is connected with holder 42, fixed The frame 42 is provided with a lock bolt 43, the lock bolt 43 passes through the arc groove 321, and the lock bolt 43 is connected with the limit plate 32 through the lock nut 44, when the lock nut 44 is tightened, the lock nut 44 compresses the limit plate, so that the limit plate 32 and the fixed frame 42 cannot rotate relatively, and realizes the locking and positioning of the cylinder 4. After the lock nut 44 is loosened, when the angle of the cylinder 4 is adjusted, the lock bolt 43 will Relatively sliding in the arc groove 321 does not hinder the rotation adjustment of the cylinder 4 .

Exemplarily, the telescopic rod 2 includes an outer tube 21 and an inner tube 22, the outer tube 21 is fixedly connected to the mobile workbench 1, the inner tube 22 is slidably inserted in the outer tube 21, and the inner tube 22 and the outer tube 21 are slidably adjusted The relative position of the telescopic rod 2 is realized, the inner tube 22 is fixedly connected with the cylinder 4, the side of the outer tube 21 is threaded with a locking piece 23, and the locking piece 23 runs through the side of the outer tube 21 and the inner tube 22 At this time, the locking member 23 restricts the sliding of the inner tube 22, so that the telescopic rod 2 is in a locked state. After the locking member 23 is released, the telescopic rod 2 can be freely telescopically adjusted.

Exemplarily, the mobile workbench 1 is provided with a support rod 11 that can be adjusted up and down. By adjusting the height of the support rod 11, the height of the mobile workbench 1 can be adjusted, thereby adjusting the height of the cylinder 4, so as to test samples 51 of different heights. Carrying out tests to improve applicability, it can be understood that the support rod 11 is provided with a locking mechanism to prevent the support rod 11 from being adjusted up and down arbitrarily.

Exemplarily, the bottom of the mobile workbench 1 is provided with a plurality of universal rollers 12 with brake mechanisms, so as to move and adjust the position of the mobile workbench 1, and the brake mechanisms on the universal rollers 12 can fix the rollers to ensure the movement Worktable 1 will not be displaced during the test.

Simultaneously, the present invention also provides the test method of this endurance test device, comprises the following steps:

S1: Adjust the position of the mobile workbench 1 so that the test sample 51 is set under the stepping block, and then adjust the position of the cylinder 4 through the telescopic rod 2 and the angle adjustment mechanism 3, that is, by adjusting the length of the telescopic rod 2 and through the angle adjustment mechanism 3. Adjust the angle between the cylinder 4 and the telescopic rod 2 so that the bottom surface of the stepping block is parallel to the top surface of the test sample 51;

S2: The controller 6 controls the solenoid valve 61 to make the piston rod of the cylinder 4 stretch until the pressure value detected by the pressure sensor 7 reaches the pedaling pressure required for the test;

S3: Keep the state of cylinder 4 unchanged until the pedaling time required for the test is reached;

S4: the controller 6 controls the solenoid valve 61 so that the piston rod of the cylinder 4 contracts until the pressure value detected by the pressure sensor 7 is zero;

S5: add one to the accumulative test times of the controller 6;

S6: The controller 6 checks whether the number of tests reaches the total number of tests, if not, repeat S2-S5, and if so, complete the test.

Exemplarily, in S6, if the number of tests does not reach the total number of tests, but reaches the set number of checks, the controller 6 prompts the tester to check the test device and the test sample 51. If the total number of tests is 100, then The number of checks can be set to be 50 times. After the 50th trial test is completed, the tester needs to check the test device and the test sample 51, such as a warning light and a buzzer that can be electrically connected with the controller 6, so that Remind the tester, if any problem with the test device is found, deal with it in time, and repeat S2-S5 after the check is correct, so as to ensure that the test is successfully completed.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, some improvements and replacements can also be made, these improvements and replacements It should also be regarded as the protection scope of the present invention.

Claims (9)

1. A kind of durability test device of simulating artificial trampling, it is characterized in that: comprise mobile workbench, telescopic rod, angle adjustment mechanism, cylinder, pedal and controller, one end of described telescopic rod and the top of described mobile workbench connected, the other end of the telescopic rod is connected to one end of the cylinder through the angle adjustment mechanism, the angle adjustment mechanism is used to adjust the angle between the cylinder and the telescopic rod, the other end of the cylinder There is a stepping block fixedly connected with the piston rod of the cylinder, the stepping block is provided with a pressure sensor for detecting the pressure of the piston rod of the cylinder on the stepping block, and the cylinder is connected to control the The solenoid valve operated by the output shaft of the air cylinder, the controller is arranged on the moving workbench, and the controller is electrically connected with the solenoid valve and the pressure sensor respectively. 2. The durability test device for simulating manual stepping according to claim 1, characterized in that: it also includes a fixed base and a fixed rod, one side of the fixed base is provided with a plurality of fixed holes distributed in a matrix, the One end of the fixing rod is provided with a fixing block, and the fixing block is provided with a fixing column matched with the fixing hole, and the other end of the fixing rod is provided with a fixing plate. 3. The durability test device for simulating manual treading according to claim 2, characterized in that: the included angle between the fixing plate and the horizontal plane is 30°-45°. 4. The durability test device for simulating manual stepping according to claim 1, characterized in that: the angle adjustment mechanism includes a rotating shaft, and the end of the cylinder is provided with a rotating seat that is rotatably connected to the rotating shaft, so that The two ends of the rotating shaft are respectively provided with limit discs, the limit discs are provided with arc-shaped grooves, the center of the arc-shaped grooves is located on the axis of the rotating shaft, and the side of the cylinder is connected with a fixed frame , the fixing frame is provided with locking bolts, the locking bolts pass through the arc-shaped slots, and the locking bolts are connected with the limiting plate through locking nuts. 5. The endurance test device for simulating manual trampling according to claim 1, characterized in that: the telescopic rod comprises an outer tube and an inner tube, the outer tube is fixedly connected to the mobile workbench, and the inner tube can be Slidingly inserted in the outer tube, the inner tube is fixedly connected with the cylinder, the side of the outer tube is threaded with a locking piece, and the locking piece runs through the side of the outer tube and the cylinder. The sides of the inner tube are offset. 6. The durability test device for simulating manual stepping according to claim 1, characterized in that: the mobile workbench is provided with a support rod that can be adjusted up and down. 7. The durability test device for simulating manual stepping according to claim 1, characterized in that: the bottom of the mobile workbench is provided with a plurality of universal rollers 12 with brake mechanisms. 8. the test method of the endurance test device of simulating artificial trampling according to claim 1, is characterized in that: comprise the following steps: S1: Adjust the position of the mobile workbench so that the test sample is set under the stepping block, and then adjust the position of the cylinder through the telescopic rod and the angle adjustment mechanism so that the bottom surface of the stepping block is in line with the The top surfaces of the test samples are parallel; S2: the controller controls the solenoid valve so that the piston rod of the cylinder extends until the pressure value detected by the pressure sensor reaches the pedaling pressure required for the test; S3: keep the state of the cylinder unchanged until the pedaling time required for the test is reached; S4: the controller controls the solenoid valve so that the piston rod of the cylinder shrinks until the pressure value detected by the pressure sensor is zero; S5: adding one to the accumulative test times of the controller; S6: The controller checks whether the number of tests reaches the total number of tests, if not, repeat S2-S5, if yes, complete the test. 9. The test method of the endurance test device simulating artificial trampling according to claim 8 is characterized in that: in S6, if the number of tests does not reach the total number of tests, but reaches the set number of checks, the controller then Prompt the tester to check the equipment and test samples, and repeat S2-S5 after the check is correct.

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