Performance testing device of inertia mechanism

Abstract

The invention discloses a performance testing device for an inertia mechanism. The performance testing device comprises a centrifugal machine, a testing tool, the inertia mechanism, a shell, an electric pull pin, a measuring system and a control system, the inertia mechanism is installed in the shell and fixed to the centrifugal machine through the test tool, the measuring system is installed on the inertia mechanism, the electric pull pins are installed on the shell, and the measuring system is connected with the control system. The inertia mechanism triggers overload movement by sensing centrifugal overload under the action of centrifugal force provided by a centrifugal machine, an electric pull pin on a shell tests whether the centrifugal overload movement is in place or not, and a measuring system on the inertia mechanism collects the overload change condition in the whole movement process in real time and transmits data information to a control system in real time. Performance testing is completed through the control system. According to the performance testing device of the inertia mechanism, the movement position of the inertia cylinder body under different overload conditions can be monitored and tested, and detection of different overload performance can be achieved by replacing the inertia cylinder spring. And the device has the advantages of simple structure and strong applicability, the measurement result is relatively accurate, and the working efficiency of performance testing is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of inertial mechanisms, and in particular to a performance testing device for an inertial mechanism. Background Art

[0002] The inertial mechanism is usually composed of multiple mechanical parts, and there are processing errors in its parts. When the errors accumulate, it usually causes inconsistency in the inertial mechanism's sense of motion overload and its action, which in turn affects the performance of the inertial mechanism. Therefore, it is particularly important to perform performance testing on the inertial mechanism.

[0003] In the prior art, the performance tests of inertial mechanisms are mostly complex and have poor versatility. It is necessary to design a dedicated test device to test each inertial mechanism one by one. The test efficiency is low, which not only increases the design cost of the test device and the production volume, but also causes a waste of resources. It is also unable to adapt to the size requirements of different inertial mechanisms. Therefore, it is urgent to design a performance test device for the inertial mechanism. Summary of the invention

[0004] The invention provides a performance testing device for an inertial mechanism, which effectively solves the problems of low efficiency and poor versatility of the existing performance testing device.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A performance test device for an inertial mechanism, comprising a centrifuge, a test fixture, an inertial mechanism, a housing, an electric pull pin, a measuring system, and a control system;

[0007] The inertial mechanism is installed in the housing and fixed on the centrifuge through a test fixture. A measuring system is installed on the inertial mechanism. A plurality of electrical pull pins are installed on the housing. The measuring system is connected to the control system.

[0008] Under the centrifugal force provided by the centrifuge, the inertial mechanism triggers the overload movement by sensing the size of the centrifugal overload. The electric pull pin on the outer shell tests whether the centrifugal overload movement is in place. The measurement system on the inertial mechanism collects the overload changes in the entire movement process in real time, and transmits data information to the control system in real time, and completes the performance test through the control system.

[0009] As a preferred embodiment of the above scheme, the inertial mechanism includes an inertial cylinder, a counterweight, and an inertial cylinder spring, which are installed in the outer shell in sequence along the axial direction of the hole. When the inertial mechanism senses that the centrifugal overload is greater than the resistance of the inertial cylinder spring, the inertial cylinder and the counterweight move downward under the resistance of the inertial cylinder spring.

[0010] As a preferred embodiment of the above solution, a plurality of electric pin holes are provided on the surface of the shell for electric pinning to test the movement position of the inertial cylinder under different overload conditions.

[0011] As a preferred embodiment of the above solution, the center of the electric pin removal hole on the shell is located on the longitudinal center line of the inner hole of the shell.

[0012] As a preferred embodiment of the above scheme, the test fixture includes a base plate, a fixing pin and a cover plate; the base plate has a plurality of pin holes and is fixedly connected to the test bench through a fixing pin with a thread at one end, and the base plate also has a plurality of evenly distributed mounting holes for mounting inertial mechanisms of different sizes; the cover plate is mounted on the surface of the outer shell, and has fixing holes on the cover plate corresponding to the positions of the electric pull pin holes on the outer shell, and the cover plate also has a plurality of evenly distributed grooves for placing the electric pull pins.

[0013] As a preferred embodiment of the above solution, the cover plate stabilizes the outer shell through rubber pads.

[0014] As a preferred embodiment of the above scheme, the measurement system includes a high-precision strain gauge, a sensor and a micro-accelerometer. The strain gauge is attached to the inertial cylinder and is used to accurately measure the structural strain. The sensor is used to monitor the displacement change caused by overload. The micro-accelerometer is used to obtain the acceleration information of the inertial mechanism during the overload process in real time.

[0015] Due to the above structure, the beneficial effects of the present invention are:

[0016] The performance test device of the inertial mechanism of the present application can not only monitor the movement position of the inertial cylinder under different overload conditions, but also detect different overload performances by replacing the inertial cylinder spring. It has the advantages of simple structure and strong applicability, and the measurement results are relatively accurate, and the working efficiency of the performance test is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below.

[0018] Figure 1 It is a schematic diagram of the structure of the performance testing device of the present invention;

[0019] Figure 2 It is a schematic diagram of the cover plate structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the test tool structure of the present invention;

[0021] Figure 4 It is a schematic diagram of the connection relationship between the measurement system and the control system of the present invention. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0023] like Figures 1 to 4 As shown, this embodiment provides a performance test device for an inertial mechanism, comprising a centrifuge 16, a test fixture 11, an inertial mechanism 9, a housing 1, an electric pull pin 7, a measuring system 10, and a control system 15; the inertial mechanism 9 is installed in the housing 1 and fixed to the centrifuge 16 through the test fixture 11, the inertial mechanism 9 is installed with the measuring system 10, the housing 1 is installed with a plurality of electric pull pins 7, the measuring system 10 is connected to the control system 15, and the collected data information is uploaded to the control system 15.

[0024] In this embodiment, the inertial mechanism 9 includes an inertial cylinder 2, a counterweight 3, and an inertial cylinder spring 4, which are installed in the outer shell 1 in sequence along the axial direction of the hole. When the inertial mechanism 9 senses that the centrifugal overload is greater than the resistance of the inertial cylinder spring 4, the inertial cylinder 2 and the counterweight 3 move downward under the resistance of the inertial cylinder spring 4. By replacing the inertial cylinder spring 4, the different overload performances of the inertial mechanism 9 can be detected.

[0025] In this embodiment, a plurality of electric pin holes 1-1 are provided on the surface of the housing 1 for the electric pin 7 to test the moving position of the inertia cylinder 2 of the inertia mechanism 9 under different overload conditions, and the center of the electric pin hole 1-1 on the housing 1 is located on the longitudinal center line of the inner hole of the housing 1. Such a design allows the electric pin hole 1-1 to be directly opposite to the inertia cylinder 2, thereby reducing the centrifugal force generated when the inertia mechanism 9 is centrifuged in the centrifuge.

[0026] In this embodiment, the test fixture 11 includes a base plate 5, a fixing pin 6 and a cover plate 8. Figure 3 As shown, the bottom plate 5 has a plurality of pin holes 5-1, and is fixedly connected to the test bench through a fixing pin 6 with a thread at one end, so that the bottom plate 5 can be reliably fixed on the test bench. The bottom plate 5 also has a plurality of evenly distributed mounting holes 5-2 for mounting inertial mechanisms 9 of different sizes. Figure 2As shown, the cover plate 8 is installed on the surface of the housing 1, and the cover plate 8 has fixing holes 8-1 corresponding to the positions of the electric pin holes 1-1 on the housing 1, that is, the distance between the electric pin holes 1-1 is the same as the distance between the fixing holes 8-1 on the cover plate 8, which is convenient for installing the electric pin 7. The cover plate 8 also has a plurality of evenly distributed grooves 8-2 for placing the electric pin 7, and the cover plate 8 firmly fixes the housing 1 on the bottom plate 5 through rubber pads. The above design can be adjusted according to the different outer dimensions of the housing of the inertial mechanism 9, which is convenient for the universal use of the test device, and each fixing hole 8-1 has a groove 8-2, which can ensure that the electric pin hole 1-1 on the housing 1 is at the center of the fixing hole 8-1.

[0027] In this embodiment, the measurement system 10 includes a high-precision strain gauge 12, a sensor 13 and a micro accelerometer 14. The strain gauge 12 is attached to the inertial cylinder 2 for accurately measuring the structural strain. The sensor 13 is used to monitor the displacement change caused by overload. The micro accelerometer 14 is used to obtain the acceleration information of the inertial mechanism 9 during the overload process in real time.

[0028] In this embodiment, the control system 15 may be a controller.

[0029] The working principle of the above structure is:

[0030] The inertia cylinder 2, the counterweight 3, and the inertia cylinder spring 4 constitute the overload motion device of the inertia mechanism 9, and the centrifuge 16 provides centrifugal force for the overload motion device. When the centrifugal overload on the inertia cylinder 2 of the inertia mechanism 9 is less than the resistance of the inertia cylinder spring 4, the inertia cylinder 2 does not move; when the centrifugal overload on the inertia mechanism 9 is greater than the resistance of the inertia cylinder spring 4 on the inertia cylinder 2, the inertia cylinder 2 and the counterweight 3 are guided by the inner wall of the hole of the housing 1, run along the axial direction and compress the inertia cylinder spring 4.

[0031] Under different overload conditions, the inertia cylinder 2 moves to different positions. Two electric pins 7 are used for testing each time. The first electric pin 7 locks the inertia cylinder 2. At this time, by loading different overloads, the second electric pin 7 is used to test whether the inertia cylinder 2 moves to the correct position. The electric pin 7 is in an extended state when the power is off and in a contracted state when the power is on.

[0032] The measuring system 10 on the inertial mechanism 9 is connected to the control system 15 by an external test lead. The sensor 13 and the micro accelerometer 14 in the measuring system 10 collect the overload changes during the entire movement process in real time, and transmit the data information to the control system 15 in real time. The control system 15 can check the state of the inertial mechanism and record the overload data.

[0033] The performance test device of the inertial mechanism of this embodiment can not only monitor the movement position of the inertial cylinder under different overload conditions, but also detect different overload performances by replacing the inertial cylinder spring. It also has the advantages of simple structure and strong applicability, relatively accurate measurement results, and greatly improves the work efficiency of performance testing. It effectively solves the problems of low test efficiency and complex test methods of the existing inertial mechanism performance test device.

[0034] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A performance testing device for an inertial mechanism, characterized in that: Centrifuge (16), test fixture (11), inertial mechanism (9), housing (1), electric pull pin (7), measuring system (10), control system (15); The inertial mechanism (9) is installed in the housing (1) and fixed on the centrifuge (16) through the test fixture (11). The inertial mechanism (9) is installed with a measuring system (10). The housing (1) is installed with a plurality of electrical pull pins (7). The measuring system (10) is connected to the control system (15). Under the action of the centrifugal force provided by the centrifuge (16), the inertial mechanism (9) triggers the overload movement by sensing the centrifugal overload size, and the electric pull pin (7) on the housing (1) tests whether the centrifugal overload movement is in place. The measuring system (10) on the inertial mechanism (9) collects the overload change situation during the whole movement process in real time, and transmits the data information to the control system (15) in real time, and completes the performance test through the control system (15).

2. The performance testing device of an inertial mechanism according to claim 1, characterized in that: The inertia mechanism (9) comprises an inertia cylinder (2), a counterweight (3) and an inertia cylinder spring (4), which are sequentially installed in the housing (1) along the axial direction of the hole. When the inertia mechanism (9) senses that the centrifugal overload is greater than the resistance of the inertia cylinder spring (4), the inertia cylinder (2) and the counterweight (3) move downward under the resistance of the inertia cylinder spring (4).

3. The performance testing device of an inertial mechanism according to claim 1, characterized in that: A plurality of electric pin holes (1-1) are provided on the surface of the housing (1) for use in testing the movement position of the inertia cylinder (2) under different overload conditions by using an electric pin (7).

4. The performance testing device of an inertial mechanism according to claim 3, characterized in that: The center of the electrical pin-pulling hole (1-1) on the housing (1) is located on the longitudinal center line of the inner hole of the housing (1).

5. The performance testing device of an inertial mechanism according to claim 1, characterized in that: The test fixture (11) comprises a base plate (5), a fixing pin (6) and a cover plate (8); The base plate (5) has a plurality of pin holes (5-1) and is fixedly connected to the test bench via a fixing pin (6) with a thread at one end. The base plate (5) also has a plurality of evenly distributed mounting holes (5-2) for mounting inertial mechanisms (9) of different sizes. The cover plate (8) is mounted on the surface of the housing (1), and has fixing holes (8-1) corresponding to the positions of the electrical pull pin holes (1-1) on the housing (1). The cover plate (8) also has a plurality of evenly distributed grooves (8-2) for accommodating the electrical pull pins (7).

6. The performance testing device of an inertial mechanism according to claim 5, characterized in that: The cover plate (8) stabilizes the outer shell (1) via a rubber pad.

7. The performance testing device of an inertial mechanism according to claim 1, characterized in that: The measurement system (10) comprises a high-precision strain gauge (12), a sensor (13) and a micro-accelerometer (14); the strain gauge (12) is attached to the inertial cylinder (2) and is used to accurately measure the structural strain; the sensor (13) is used to monitor the displacement change caused by overload; and the micro-accelerometer (14) is used to obtain acceleration information of the inertial mechanism (9) during the overload process in real time.

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