A hydraulic cylinder fatigue testing apparatus

Abstract

The utility model relates to a kind of hydraulic cylinder fatigue test equipment, comprising: host computer;Its first side wall's baffle is provided with through-hole;Driving mechanism, fixedly set in the host computer and from the through-hole expose;Crank rocker, with the driving mechanism is connected, for with the piston rod of the hydraulic cylinder to be tested is connected to control the hydraulic cylinder to be tested swing;Pressure sensor, by height adjusting mechanism with the baffle of the first side wall of the host computer is fixed;The pressure sensor top is connected with the cylinder body of the hydraulic cylinder to be tested by connecting seat;The pressure sensor is used to measure the pressure signal of the hydraulic cylinder to be tested and transmits pressure signal out.The utility model can carry out damping test and fatigue test to hydraulic cylinder product, to evaluate the mechanical property change of hydraulic cylinder.

Description

Technical Field

[0001] This utility model relates to the technical field of hydraulic cylinder testing equipment, specifically to a hydraulic cylinder fatigue testing device. Background Technology

[0002] In production activities, it is usually necessary to test the performance of hydraulic cylinders.

[0003] However, existing hydraulic cylinders are tested manually by repeatedly compressing the hydraulic rod to sense changes in damping, thus achieving the purpose of testing the stability of the hydraulic cylinder. This method requires a high level of worker experience and cannot quantify numerical values. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this invention is to provide a hydraulic cylinder fatigue testing device capable of performing damping and fatigue tests on hydraulic cylinder products to evaluate changes in the mechanical properties of the hydraulic cylinder.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: The hydraulic cylinder fatigue testing equipment of this utility model includes: The main unit; its first side wall baffle is provided with through holes; The drive mechanism is fixedly installed inside the main unit and protrudes from the through hole; A crank rocker arm, connected to the drive mechanism, is used to connect to the piston rod of the hydraulic cylinder under test to control the hydraulic cylinder under test to swing. A pressure sensor is fixed to a baffle on the first side wall of the host via a height adjustment mechanism; the top of the pressure sensor is connected to the cylinder body of the hydraulic cylinder under test via a connecting seat; the pressure sensor is used to measure the pressure signal of the hydraulic cylinder under test.

[0006] Preferably, the hydraulic cylinder fatigue testing equipment further includes a proximity induction switch and a proximity sensor; the proximity sensor is connected to the crank rocker arm, and the proximity induction switch is disposed on a baffle on the first side wall of the main unit and is inductively connected to the proximity sensor to control the crank rocker arm to swing.

[0007] Preferably, the hydraulic cylinder fatigue testing equipment further includes a thermocouple, which is disposed on the cylinder body of the hydraulic cylinder under test and is used to measure the temperature signal of the hydraulic cylinder under test and transmit the temperature signal.

[0008] Preferably, the hydraulic cylinder fatigue testing equipment further includes a paperless recorder, which is disposed on the second side wall of the main unit. The paperless recorder is connected to the thermocouple and the pressure sensor respectively through a transmitter to receive and record pressure and temperature signals.

[0009] Preferably, the hydraulic cylinder fatigue testing equipment further includes a cooling fan, which is disposed on the top of the main unit for dissipating heat from the main unit.

[0010] Preferably, in the hydraulic cylinder fatigue testing equipment, the drive mechanism is a speed-regulating motor.

[0011] Preferably, the hydraulic cylinder fatigue testing equipment further includes a motor speed controller, which is disposed on the second side wall of the main unit and electrically connected to the speed-regulating motor for controlling the speed of the speed-regulating motor.

[0012] Preferably, the hydraulic cylinder fatigue testing equipment further includes a counting relay and a counting reset button; The counting relay is electrically connected to the proximity sensing switch and is used to record the number of times the tested hydraulic cylinder swings. The count reset button is electrically connected to the count relay and is used to reset the count relay.

[0013] Preferably, the hydraulic cylinder fatigue testing equipment also includes an emergency stop switch for stopping the entire machine in an emergency.

[0014] Preferably, in the hydraulic cylinder fatigue testing equipment, the height adjustment mechanism includes a mounting base, a fixed connector, an adjustment plate, and an adjustment connector. A strip groove is provided on the fixing surface of the mounting base, and the fixing connector passes through the strip groove and is fixed to the baffle of the first side wall of the host. The adjustment plate is located below the mounting base and is fixed to the first side wall of the main unit; The adjusting connector passes through the adjusting plate and is threaded to the bottom of the mounting base; so as to adjust the height of the mounting base through the adjusting connector. The pressure sensor is mounted on the mounting plate of the mounting base.

[0015] This utility model has the following advantages due to the adoption of the above technical solution: This invention uses electric power to drive the piston rod, with a mechanical sensor installed below the piston and a thermocouple installed on the side. During testing, the changes in damping force and temperature of the hydraulic cylinder can be recorded in real time. This utility model is used to evaluate changes in the mechanical properties of hydraulic cylinders, thereby enabling improvements to the hydraulic cylinders. Attached Figure Description

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the hydraulic cylinder under test in this utility model.

[0017] The labels for the attached figures are as follows: 1-Main unit; 2-Drive mechanism; 3-Crank rocker arm; 4-Hydraulic cylinder under test; 5-Pressure sensor; 6-Height adjustment mechanism; 601-Mounting base; 602-Fixed connector; 603-Adjusting plate; 604-Adjusting connector; 7-Connecting base; 8-Proximity sensor switch; 9-Thermocouple; 10-Paperless recorder; 11-Cooling fan; 12-Motor speed controller; 13-Counting relay; 14-Counting reset button; 15-Emergency stop switch; 16-Proximity sensor. Detailed Implementation

[0018] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0019] This invention provides a hydraulic cylinder fatigue testing device, which has a mechanical sensor installed below the piston and a thermocouple installed on the side. During the test, the device can record the changes in damping force and temperature of the hydraulic cylinder in real time.

[0020] like Figure 1 As shown, the hydraulic cylinder fatigue testing equipment provided by this utility model includes: a main unit 1; a through hole is provided on the baffle of its first side wall; a drive mechanism 2, which is fixedly installed in the main unit 1 and protrudes from the through hole; a crank rocker arm 3, which is connected to the drive mechanism 2 and is used to connect to the piston rod of the hydraulic cylinder 4 under test to control the hydraulic cylinder 4 under test to swing; a pressure sensor 5, which is fixed to the baffle of the first side wall of the main unit 1 through a height adjustment mechanism 6; the top of the pressure sensor 5 is connected to the cylinder body of the hydraulic cylinder 4 under test through a connecting seat 7; the pressure sensor 5 is used to measure the pressure signal of the hydraulic cylinder 4 under test.

[0021] In the above embodiments, preferably, the present invention further includes a proximity sensing switch 8 and a proximity sensor 16; the proximity sensor 16 is connected to the crank rocker arm 3, and the proximity sensing switch 8 is disposed on the baffle of the first side wall of the main unit 1 and is inductively connected to the proximity sensor 16 to control the crank rocker arm 3 to swing.

[0022] In the above embodiments, preferably, the present invention also includes a thermocouple 9, which is disposed on the cylinder body of the hydraulic cylinder 4 under test, and is used to measure the temperature signal of the hydraulic cylinder 4 under test and transmit the temperature signal out.

[0023] In the above embodiments, preferably, the present invention also includes a paperless recorder 10, which is disposed on the second side wall of the host 1. The paperless recorder 10 is connected to the thermocouple 9 and the pressure sensor 5 through a transmitter (not shown in the figure) to receive pressure signals and temperature signals and record them.

[0024] In the above embodiments, preferably, the present invention further includes a cooling fan 11, which is disposed on the top of the host 1 and is used to dissipate heat from the host 1.

[0025] In the above embodiments, preferably, the drive mechanism 2 is a speed-regulating motor.

[0026] In the above embodiments, preferably, the present invention further includes a motor speed controller 12, which is disposed on the second side wall of the host 1 and electrically connected to the speed-regulating motor for controlling the speed of the speed-regulating motor.

[0027] In the above embodiments, preferably, the present invention further includes a counting relay 13 and a counting reset button 14; the counting relay 13 is electrically connected to the proximity sensing switch 8 and is used to record the number of swings of the tested hydraulic cylinder 4; the counting reset button 14 is electrically connected to the counting relay 13 and is used to reset the counting relay 13.

[0028] In the above embodiments, preferably, the present invention also includes an emergency stop switch 15, used to stop the entire machine from working in an emergency.

[0029] In the above embodiment, preferably, the height adjustment mechanism 6 includes a mounting base 601, a fixed connector 602, an adjusting plate 603, and an adjusting connector 604. A slotted groove is provided on the fixing surface of the mounting base 601, and the fixed connector 602 passes through the slot and is fixed to the baffle of the first side wall of the main unit 1. The adjusting plate 603 is located below the mounting base 601 and is fixed to the first side wall of the main unit 1. The adjusting connector 604 passes through the adjusting plate 603 and is threadedly connected to the bottom of the mounting base 601, so that the height of the mounting base 601 can be adjusted via the adjusting connector 604. The pressure sensor 5 is located on the mounting plate of the mounting base 601. Therefore, the height of the bottom mounting position of the hydraulic cylinder under test can be adjusted by the height adjustment mechanism to accommodate different hydraulic cylinders 4 under test.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A fatigue testing device for hydraulic cylinders, characterized in that, include: Host; The baffle plate on its first side wall has through holes; The drive mechanism is fixedly installed inside the main unit and protrudes from the through hole; A crank rocker arm, connected to the drive mechanism, is used to connect to the piston rod of the hydraulic cylinder under test to control the hydraulic cylinder under test to swing. A pressure sensor is fixed to a baffle on the first side wall of the host via a height adjustment mechanism; the top of the pressure sensor is connected to the cylinder body of the hydraulic cylinder under test via a connecting seat; the pressure sensor is used to measure the pressure signal of the hydraulic cylinder under test.

2. The hydraulic cylinder fatigue testing equipment according to claim 1, characterized in that, It also includes a proximity switch and a proximity sensor; the proximity sensor is connected to the crank rocker arm, and the proximity switch is disposed on a baffle on the first side wall of the main unit and is connected to the proximity sensor to control the crank rocker arm to swing.

3. The hydraulic cylinder fatigue testing apparatus of claim 1, wherein, It also includes a thermocouple, which is installed on the cylinder body of the hydraulic cylinder under test and is used to measure the temperature signal of the hydraulic cylinder under test and transmit the temperature signal.

4. The hydraulic cylinder fatigue testing equipment according to claim 3, characterized in that, It also includes a paperless recorder, which is disposed on the second side wall of the host. The paperless recorder is connected to the thermocouple and the pressure sensor respectively through a transmitter to receive and record pressure and temperature signals.

5. The hydraulic cylinder fatigue testing apparatus of claim 1, wherein, It also includes a cooling fan, which is located on the top of the host and is used to dissipate heat from the host.

6. The hydraulic cylinder fatigue testing apparatus of claim 1, wherein, The drive mechanism is a speed-regulating motor.

7. The hydraulic cylinder fatigue testing apparatus of claim 6, wherein, It also includes a motor speed controller, which is disposed on the second side wall of the main unit and electrically connected to the speed-regulating motor for controlling the speed of the speed-regulating motor.

8. The hydraulic cylinder fatigue testing equipment according to claim 2, characterized in that, It also includes a counting relay and a counting reset button; The counting relay is electrically connected to the proximity sensing switch and is used to record the number of times the tested hydraulic cylinder swings. The count reset button is electrically connected to the count relay and is used to reset the count relay.

9. The hydraulic cylinder fatigue testing equipment according to claim 2, characterized in that, It also includes an emergency stop switch, used to stop the entire machine in an emergency.

10. The hydraulic cylinder fatigue testing equipment according to claim 1, characterized in that, The height adjustment mechanism includes a mounting base, a fixed connector, an adjustment plate, and an adjustment connector; A strip groove is provided on the fixing surface of the mounting base, and the fixing connector passes through the strip groove and is fixed to the baffle of the first side wall of the host. The adjustment plate is located below the mounting base and is fixed to the first side wall of the main unit; The adjusting connector passes through the adjusting plate and is threaded to the bottom of the mounting base; so as to adjust the height of the mounting base through the adjusting connector. The pressure sensor is mounted on the mounting plate of the mounting base.

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