A vibration environment simulation test system based on vacuum conditions

Abstract

The present application discloses a vibration environment simulation test system under vacuum conditions, which belongs to the field of scientific experimental instruments. Its technical points are: comprising: a vibration test system, which comprises: an exciter, an exciter connecting rod assembly, a transition plate, a vacuum penetration mechanism, a workpiece connecting rod, and a balance chamber; the vacuum penetration mechanism comprises: a first corrugated connecting pipe and a second corrugated connecting pipe; the transition plate is arranged in the middle of the vacuum penetration mechanism, and the first corrugated connecting pipe and the second corrugated connecting pipe are respectively arranged on both sides of the transition plate; the exciter, the exciter connecting rod assembly, and the transition plate are connected in sequence, the workpiece connecting rod is fixed to the transition plate, and the workpiece connecting rod is placed in the first corrugated connecting pipe; one end of the vacuum penetration mechanism is connected to the vacuum container, and the other end is connected to one end of the balance chamber. The technical solution of the present application can meet the needs of scientific experiments.

Description

Technical Field

[0001] The present invention relates to the field of scientific test instruments, and more specifically, to a vibration environment simulation test system under vacuum conditions. Background Art

[0002] Ultrasonic motor is a power device with many advantages and has broad application prospects in aerospace. For example, the TRUM30 ultrasonic motor has been used in the infrared spectrometer of Chang'e 3.

[0003] Ultrasonic motors are used in the aerospace field and require relevant environmental testing. The relevant research is as follows:

[0004] Reference 1: "Lu Dan, Suna, Zhu Chunling, et al. Experimental study on ultrasonic motor vibration environment [J]. Proceedings of the CSEE, 2008, 28 (18): 4" mentions an ultrasonic motor vibration environment test system. The ultrasonic motor is connected to the vibration table through a fixture, and the excitation signal of the vibration table surface is transmitted to the ultrasonic motor.

[0005] Reference 2: "Lu Dan, Zheng Wei, Zhao Chunsheng. Research on vacuum environment test of ultrasonic motor [J]. Piezoelectrics and Acoustooptics, 2009, 31 (2): 3" mentions a vacuum environment test system for ultrasonic motors.

[0006] Reference 3: "Yin Yucong, Yang Lin. Research on extreme environment test of common step shaft dual stator / rotor ultrasonic motor [J]. Proceedings of the CSEE, 2015, 35(22): 5877-5884" mentioned a vacuum, high / low temperature composite environment test system (KM800-700 vacuum high and low temperature space environment simulation test system of Zhongke Kemei Company) and an ultrasonic motor vibration environment test system.

[0007] To simulate the vibration behavior of ultrasonic motors in space, they must be placed in a vacuum environment. (The vibration environment test systems studied in References 1 and 3 were still conducted under atmospheric pressure, which is inconsistent with actual conditions.) Therefore, vibration testing should be conducted in a vacuum environment. Therefore, it is necessary to develop a vibration environment simulation test system for ultrasonic motors under vacuum conditions.

[0008] For the vibration environment simulation test system under vacuum conditions, the difficulty lies in: transmitting the vibration to the ultrasonic motor while reducing the vibration of the vacuum container where the ultrasonic motor is located. This is the difficulty in the research and development of this test system. Summary of the Invention

[0009] The purpose of the present invention is to provide a vibration environment simulation test system under vacuum conditions to address the deficiencies of the above-mentioned prior art.

[0010] The technical solution of the present invention is:

[0011] A vibration environment simulation test system under vacuum conditions, comprising:

[0012] A vacuum container for placing a workpiece to be measured;

[0013] The vibration test system includes: an exciter, an exciter connecting rod assembly, a transition plate, a vacuum penetration mechanism, a workpiece connecting rod, and a balance chamber; the connection relationship between the various components of the vibration test system is as follows:

[0014] i. The vacuum penetration mechanism includes: a first corrugated connecting pipe and a second corrugated connecting pipe;

[0015] ii. The transition plate is arranged in the middle of the vacuum penetration mechanism, and the first corrugated connecting pipe and the second corrugated connecting pipe are respectively arranged on both sides of the transition plate;

[0016] iii. the vibrator, the vibrator connecting rod assembly, and the transition plate are connected in sequence, the workpiece connecting rod is fixed to the transition plate, and the workpiece connecting rod is placed in the first corrugated connecting tube;

[0017] iv, one end of the vacuum penetration mechanism is connected to the vacuum container, and the other end is connected to one end of the balance chamber;

[0018] A vacuum guarantee system, which is used to provide vacuum for the vacuum container;

[0019] Wherein, the other end of the balancing chamber is connected to the vacuum protection system;

[0020] Wherein, the workpiece connecting rod is connected to the workpiece to be measured and is used to transmit the exciting force.

[0021] Furthermore, the other end of the balancing chamber is connected to the mechanical pump of the vacuum support system.

[0022] Furthermore, the vacuum penetration mechanism further includes: a first flange, a second flange, a third flange, and a fourth flange; both ends of the first corrugated connecting pipe are connected to the first flange and the second flange respectively; both ends of the second corrugated connecting pipe are connected to the third flange and the fourth flange respectively;

[0023] The transition plate is arranged between the second flange and the third flange, and the three are fixedly connected together by a bolt and nut assembly;

[0024] A connecting flange is preset on the vacuum container, and the connecting flange is fixedly connected to the first flange through a bolt and nut assembly.

[0025] Furthermore, the vibration testing system further comprises: a support frame, a first support seat, and a second support seat; the exciter, the first support seat, and the second support seat are all fixedly arranged on the support frame;

[0026] The first support seat is used to provide vertical support for the transition plate, the second flange, and the third flange;

[0027] The balancing chamber is fixedly supported on the second supporting seat.

[0028] Furthermore, the vacuum assurance system includes:

[0029] i, a main pipeline, a mechanical pump is installed at one end of the main pipeline, and the other end is connected to one end of the first branch pipeline, the second branch pipeline, the third branch pipeline, and the fourth branch pipeline respectively;

[0030] ii, a first branch pipeline, on which a pre-extraction valve is installed;

[0031] iii, a second branch pipeline, on which a second fore valve, a second resistance gauge, a molecular pump, and a second gate valve are installed;

[0032] iv. a third branch pipeline, on which a third fore valve, a third resistance gauge, a cryogenic pump, and a third gate valve are installed;

[0033] iv, a fourth branch pipeline, on which a fourth vacuum gauge and a balancing valve are installed;

[0034] Wherein, the other ends of the second branch pipe and the third branch pipe are both connected to the vacuum container;

[0035] Wherein, the other end of the fourth branch pipe is communicated with the balancing chamber.

[0036] Furthermore, the vacuum container adopts a horizontal cylindrical structure and is made of stainless steel.

[0037] Furthermore, a pressure gauge, a resistance gauge, an ionization gauge, and an air release valve are provided on the top of the vacuum container.

[0038] Furthermore, it also includes: an air compressor; the pre-pumping valve, the second front-stage valve, the third front-stage valve, and the balancing valve are all pneumatic valves, and the air compressor provides air source power for the pre-pumping valve, the second front-stage valve, the third front-stage valve, and the balancing valve.

[0039] Furthermore, it also includes: a cooling circulating water machine; the cooling water system provides cooling for the molecular pump and cryogenic pump of the vacuum system.

[0040] Furthermore, the temperature assurance system includes: a heat sink, an infrared heating cage, a mechanical refrigeration system, and a heating power supply;

[0041] The heat sink is arranged inside the vacuum container, and the inner surface of the heat sink is painted black;

[0042] The infrared heating cage is arranged inside the heat sink;

[0043] A workpiece platform is provided in the heating cage; the workpiece platform is used to place the workpiece to be measured;

[0044] The mechanical refrigeration system uses a refrigerant medium to cool the heat sink;

[0045] The heating power supply is connected to the infrared heating cage.

[0046] Furthermore, the outer surface of the heat sink is electroplated or wrapped with a layer of stainless steel reflective screen to increase the reflectivity, and the inner surface is painted with special black paint to increase the absorption rate. The black paint has an absorption rate of 0.92 and a reflectivity of 0.90, simulating a vacuum cold black environment.

[0047] The beneficial effects of this application are:

[0048] First, this application provides a vibration environment simulation test system under vacuum conditions. It faces two core problems during its development:

[0049] a. How to isolate the vibration of the vacuum container from the exciter.

[0050] b. When vacuuming, the vibration test system will move towards the vacuum container.

[0051] In response to the above problems, the following design is adopted: "The vacuum penetration mechanism includes: a first corrugated connecting tube and a second corrugated connecting tube; the transition plate is arranged in the middle of the vacuum penetration mechanism, and the first corrugated connecting tube and the second corrugated connecting tube are respectively arranged on both sides of the transition plate; the exciter, the exciter connecting rod assembly, and the transition plate are connected in sequence, the workpiece connecting rod is fixed to the transition plate, and the workpiece connecting rod is placed in the first corrugated connecting tube; one end of the vacuum penetration mechanism is connected to the vacuum container, and the other end is connected to one end of the balance chamber, and the other end of the balance chamber is connected to the vacuum support system" to jointly solve the above problems.

[0052] Second, regarding the design of "the other end of the balancing chamber being connected to the vacuum support system," this application utilizes four branch pipes. The first branch pipe 1320 serves as a pre-evacuation line for the vacuum container; the second and third branch pipes serve as fine-evacuation lines for the vacuum container; and the fourth branch pipe directly connects to the balancing chamber. During operation, the balancing valve can be closed after pre-evacuation is completed (at which point the pressure in the vacuum container is approximately 10-50 Pa). Therefore, the pressure differential across the transition plate at this point is not as great as atmospheric pressure, and the force generated is not as significant.

[0053] Third, the vibration environment simulation test system developed in this application is primarily used to provide vacuum and high- and low-temperature environments for ultrasonic motor vibration testing. This equipment can realistically simulate the hot and cold environments of a vacuum space, enabling thermal vacuum testing and life testing of test pieces. It also effectively controls, monitors, and records the temperature of test pieces in a vacuum space, providing the necessary conditions for testing related aerospace products. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The present invention will be further described in detail below with reference to the embodiments in the accompanying drawings, but this does not constitute any limitation to the present invention.

[0055] Figure 1 This is a schematic diagram of a three-dimensional design of a vibration environment simulation test system under vacuum conditions according to the first embodiment.

[0056] Figure 2 This is a front view of a vibration environment simulation test system under vacuum conditions according to the first embodiment.

[0057] Figure 3 3D design diagram of the vibration test system of Example 1 (support frame not shown).

[0058] Figure 4 1 is a top view of the vibration testing system of Example 1.

[0059] Figure 5 3D design diagram of the vibration testing system of Example 1 from another perspective.

[0060] Figure 6 3D design diagram of the workpiece connecting rod of the first embodiment.

[0061] Figure 7 1 is a schematic diagram of the vacuum protection system of the first embodiment.

[0062] Figure 8 This is a schematic diagram of the vacuum container of Example 1.

[0063] Figure 9 It is a three-dimensional design drawing of the vacuum container of Example 1.

[0064] Figure 10 It is a schematic diagram of the temperature assurance system of the first embodiment.

[0065] The following are the descriptions of the reference numerals:

[0066] Vibration environment simulation test system 1000 based on vacuum conditions;

[0067] Vacuum container 1100;

[0068] Vibration testing system 1200, vibrator 1210, vibrator connecting rod assembly 1220, transition plate 1230, vacuum penetration mechanism 1240, first flange 1241, first bellows connecting pipe 1242, second flange 1243, third flange 1244, second bellows connecting pipe 1245, fourth flange 1246, workpiece connecting rod 1250, balancing chamber 1260, support frame 1270, first support base 1281, second support base 1282;

[0069] Vacuum support system 1300, main pipeline 1310, mechanical pump 1311, first branch pipeline 1320, pre-evacuation valve 1321, second branch pipeline 1330, second fore valve 1331, second resistance gauge 1332, molecular pump 1333, second gate valve 1334, third branch pipeline 1340, third fore valve 1341, third resistance gauge 1342, cryopump 1343, third gate valve 1344, fourth branch pipeline 1350, fourth vacuum gauge 1351, balancing valve 1352;

[0070] The temperature assurance system 1400 includes: a heat sink 1410, an infrared heating cage 1420, a mechanical refrigeration system 1430, and a heating power supply 1440;

[0071] Auxiliary system 1500, air compressor 1510, cooling circulating water machine 1520. DETAILED DESCRIPTION

[0072] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0073] <Example 1: A vibration environment simulation test system based on vacuum conditions>

[0074] Figure 1 The figure shows a three-dimensional structure of a vibration environment simulation test system under vacuum conditions. Figure 1As shown, a vibration environment simulation test system 1000 under vacuum conditions includes:

[0075] a, vacuum container 1100. The vacuum container 1100 is used to place a workpiece to be tested.

[0076] b, Vibration testing system 1200. The vibration testing system 1200 is used to provide an exciting force to a workpiece.

[0077] c. Vacuum protection system 1300. The vacuum protection system 1300 is a device used to evacuate the vacuum container 1100 to a vacuum environment.

[0078] d. Temperature assurance system 1400. It can be used to provide a high and low temperature environment for ultrasonic motor vibration testing.

[0079] f. Auxiliary system 1500. Auxiliary system 1500 includes an air compressor 1510 and a cooling water circulation machine 1520. The cooling water system provides cooling for the vacuum system's vacuum pump (molecular pump 1333, cryogenic pump 1343) and the temperature assurance system's mechanical refrigeration system 1430. The gas circuit system provides air power for the valves (pre-pump valve 1321, second fore-stage valve 1331, third fore-stage valve 1341, and balancing valve 1352).

[0080] Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 The vibration test system 1200 includes:

[0081] i. Vibrator 1210. The vibrator 1210 is used to generate vibration. The vibrator used in this application is a HEV-200 high-energy electric vibrator. Its parameters are as follows: (1) sinusoidal excitation force: 50N; (2) frequency range: 5-10000Hz; (3) maximum displacement: 10mm; (4) maximum speed: 1.2m / s; (5) maximum acceleration: 300m / s 2 .

[0082] ii. Vibrator connecting rod assembly 1220 : The vibrator connecting rod assembly 1220 is used to connect the vibrator 1210 and the transition plate 1230 .

[0083] iii. Transition plate 1230 . The exciter connecting rod assembly 1220 placed in an atmospheric pressure environment and the workpiece connecting rod 1250 placed in a vacuum environment are connected via the transition plate 1230 .

[0084] iv. Vacuum penetration mechanism 1240. The vacuum penetration mechanism 1240 includes: a first flange 1241, a first bellows connection pipe 1242, a second flange 1243, a third flange 1244, a second bellows connection pipe 1245, and a fourth flange 1246. The first bellows connection pipe 1242 has its ends connected to the first flange 1241 and the second flange 1243, respectively. The second bellows connection pipe 1245 has its ends connected to the third flange 1244 and the fourth flange 1246, respectively.

[0085] v, workpiece connecting rod 1250. This rod is used to transmit excitation to the workpiece (i.e., ultrasonic motor) in the vacuum container. The axes of the first corrugated connecting tube 1242, the second corrugated connecting tube 1245, and the workpiece connecting rod 1250 are all parallel to the vibration direction of the exciter 1210.

[0086] vi. Balance chamber 1260. The balance chamber 1260 is used to balance the pressure. In the initial design concept, the vacuum penetration mechanism 1240 only has the left part, that is, the transition plate serves as a closed blind plate for the second flange 1243. In this way, after the vacuum protection system 1300 completes the vacuuming of the vacuum container 1100, the workpiece connecting rod 1250 can still be placed in a vacuum environment. However, in actual operation, when the vacuum is being drawn, the first corrugated connecting tube 1242 will shrink, and the entire vibration test system 1200 will move toward the direction of the vacuum container 1100. The role of the balance chamber 1260 is to solve the above problem: the balance chamber 1260 is connected to the fourth branch pipe 1350 of the vacuum protection system 1300.

[0087] vii. Support frame 1270. The exciter 1210 is fixedly mounted on the support frame 1270. A first support seat 1281 and a second support seat 1282 are also provided on the support frame. The first support seat 1281 is used to support the transition plate, the second flange, and the third flange (the first support seat 1281 is made of polytetrafluoroethylene, which does not limit the movement of the transition plate along the direction of the exciting force, but limits the movement perpendicular to the direction of the exciting force). The second support seat 1282 is used to support and fix the balance chamber 1260.

[0088] The coordination relationship of the various components of the vibration testing system 1200 is:

[0089] i. The transition plate 1230 is disposed between the second flange 1243 and the third flange 1244, and the three are connected together by a bolt and nut assembly;

[0090] ii. The exciter connecting rod assembly 1220 placed in an atmospheric pressure environment is connected to the workpiece connecting rod 1250 placed in a vacuum environment via the transition plate 1230;

[0091] iii. Through the coordination of the "vibrator 1210 - vibrator connecting rod assembly 1220 - transition plate 1230 - workpiece connecting rod 1250 - workpiece," the workpiece vibrates when the vibrator 1210 vibrates. Simultaneously, when the transition plate 1230 vibrates, the first and second bellows connecting tubes of the vacuum penetration mechanism 1240 continuously expand and contract (the first and second bellows connecting tubes exhibit different trends; i.e., when the first bellows connecting tube expands / contracts, the second bellows connecting tube contracts / expands). The design of the vacuum penetration mechanism 1240 prevents the transmission of vibration forces to the vacuum container and balance chamber.

[0092] iv. A balancing chamber flange is provided at the end of the balancing chamber, which is fixedly connected to the fourth flange 1246 of the vacuum penetration mechanism 1240.

[0093] The connection relationship between the vacuum container 1100, the vibration testing system 1200, and the vacuum protection system 1300 is:

[0094] i. A connecting flange is preset on the vacuum container 1100, and the connecting flange is fixedly connected to the first flange by a bolt and nut assembly;

[0095] ii. The balance chamber 1260 of the vibration testing system 1200 is in communication with the fourth branch pipe 1350 of the vacuum support system 1300 .

[0096] Figure 7 The schematic diagram shows the structural design of the vacuum protection system 1300. The vacuum protection system 1300 includes:

[0097] i. Main pipeline 1310, a mechanical pump 1311 is installed at one end of the main pipeline 1310, and the other end is connected to one end of the first branch pipeline, the second branch pipeline, the third branch pipeline, and the fourth branch pipeline respectively;

[0098] ii. a first branch pipe 1320 , on which a pre-pumping valve 1321 is installed;

[0099] iii. A second branch pipe 1330 , on which a second fore valve 1331 , a second resistance gauge 1332 , a molecular pump 1333 , and a second gate valve 1334 are installed;

[0100] iv. a third branch pipeline 1340 , on which a third fore valve 1341 , a third resistance gauge 1342 , a cryogenic pump 1343 , and a third gate valve 1344 are installed;

[0101] iv. a fourth branch pipe 1350 , on which a fourth vacuum gauge 1351 and a balancing valve 1352 are installed;

[0102] The other ends of the second branch pipe 1330 and the third branch pipe 1340 are both in communication with the vacuum container 1100 .

[0103] The other end of the fourth branch pipe 1350 is communicated with the balancing chamber 1260 .

[0104] Considering the vibration test, a cryogenic pump is selected as the main vacuum pump, a molecular pump as the auxiliary pump, and a mechanical pump as the fore-vacuum pump to ensure the vacuum system.

[0105] It should be noted that the balancing valve can be closed after pre-evacuation (the air pressure in the vacuum container is about 10~50Pa at this time). Therefore, the pressure difference at both ends of the transition plate will not be as large as the atmospheric pressure, and the force generated will not be that large.

[0106] Figure 8 、 Figure 9 The schematic diagrams illustrate the structural design of the vacuum container. The vacuum container 1100 is a horizontal cylindrical structure made of stainless steel. A pressure gauge 1101 (for measuring the atmospheric pressure within the vacuum container at normal pressure), a resistance gauge 1102, an ionization gauge 1103, and a vent valve 1104 are located on the top of the container.

[0107] It should be noted that the vibration environment simulation test system under vacuum conditions of the present application can perform vibration measurements in two mutually perpendicular directions: the workpiece to be tested is in a normal state and in a state corresponding to a 90-degree rotation in the horizontal plane, and an exciter is used to vibrate to achieve vibration measurements in two mutually perpendicular directions.

[0108] Figure 10 The schematic diagram shows the design principle of the temperature assurance system 1400. The temperature assurance system 1400 includes: a heat sink 1410, an infrared heating cage 1420, a mechanical refrigeration system 1430, and a heating power supply 1440.

[0109] The heat sink 1410 is arranged inside the vacuum container 1100. The outer surface of the heat sink 1410 is electroplated or wrapped with a layer of stainless steel reflective screen to increase the reflectivity, and the inner surface is painted with special black paint to increase the absorption rate. The black paint has an absorption rate of 0.92 and a reflectivity of 0.90, simulating a vacuum cold black environment. The heat sink 1410 is cylindrical and has a vibration test port reserved on its side for the workpiece connecting rod 1250 to pass through.

[0110] The infrared heating cage 1420 is arranged inside the heat sink 1410. The infrared heating cage 1420 consists of a heating cage cylinder and front and rear heating cage covers. The rear heating cage cover is fixedly connected to the heating cage cylinder, and the front heating cage cover is connected to the front switch cover of the vacuum container; the inner surface of the infrared heating cage is coated with the same black paint as the inner surface of the heat sink 1410 (to absorb thermal radiation).

[0111] A workpiece platform 1105 is provided in the heating cage; the workpiece platform 1105 is used to place the workpiece to be measured, and there are heat insulation measures between the workpiece platform 1105 and the wall of the vacuum container 1100 .

[0112] The mechanical refrigeration system 1430 uses self-cascade refrigeration technology to cool the special refrigerant medium and finally sends it to the heat sink. The heat sink temperature can reach -130℃~-140℃, ensuring that the spatial point temperature reaches -120℃.

[0113] The heating power supply 1440 is connected to the infrared heating cage 1420 .

[0114] Mechanical refrigeration is used to obtain a low-temperature background, and the heating power of the infrared heating cage is controlled to accurately control the temperature (providing the ambient temperature for the workpiece to be tested). This creates a temperature environment that meets the test conditions for the test piece.

[0115] The above embodiments are preferred implementation modes of the present invention and are only used to facilitate the explanation of the present invention. They are not intended to limit the present invention in any form. Any person with ordinary knowledge in the technical field can, without departing from the scope of the technical features of the present invention, make partial changes or modifications to the technical contents disclosed in the present invention and make equivalent embodiments without departing from the technical features of the present invention. Such modifications still fall within the scope of the technical features of the present invention.

Claims

1. A vibration environment simulation test system based on vacuum conditions, characterized in that: include: A vacuum container for placing a workpiece to be measured; The vibration test system includes: an exciter, an exciter connecting rod assembly, a transition plate, a vacuum penetration mechanism, a workpiece connecting rod, and a balance chamber; the connection relationship between the various components of the vibration test system is as follows: i. The vacuum penetration mechanism includes: a first corrugated connecting pipe and a second corrugated connecting pipe; ii. The transition plate is arranged in the middle of the vacuum penetration mechanism, and the first corrugated connecting pipe and the second corrugated connecting pipe are respectively arranged on both sides of the transition plate; iii. the vibrator, the vibrator connecting rod assembly, and the transition plate are connected in sequence, the workpiece connecting rod is fixed to the transition plate, and the workpiece connecting rod is placed in the first corrugated connecting tube; iv, one end of the vacuum penetration mechanism is connected to the vacuum container, and the other end is connected to one end of the balance chamber; A vacuum guarantee system, which is used to provide vacuum for the vacuum container; Wherein, the other end of the balancing chamber is connected to the vacuum protection system; Wherein, the workpiece connecting rod is connected to the workpiece to be measured and is used to transmit the exciting force.

2. A vibration environment simulation test system based on vacuum conditions according to claim 1, characterized in that: The other end of the balance chamber is communicated with the mechanical pump of the vacuum support system.

3. A vibration environment simulation test system under vacuum conditions according to claim 1, characterized in that: The vacuum penetration mechanism further includes: a first flange, a second flange, a third flange, and a fourth flange; the two ends of the first corrugated connecting pipe are respectively connected to the first flange and the second flange; the two ends of the second corrugated connecting pipe are respectively connected to the third flange and the fourth flange; The transition plate is arranged between the second flange and the third flange, and the three are fixedly connected together by a bolt and nut assembly; A connecting flange is preset on the vacuum container, and the connecting flange is fixedly connected to the first flange through a bolt and nut assembly.

4. A vibration environment simulation test system under vacuum conditions as claimed in claim 3, characterized in that: The vibration testing system further includes: a support frame, a first support seat, and a second support seat; the exciter, the first support seat, and the second support seat are all fixedly arranged on the support frame; The first support seat is used to provide vertical support for the transition plate, the second flange, and the third flange; The balancing chamber is fixedly supported on the second supporting seat.

5. A vibration environment simulation test system under vacuum conditions according to claim 1, characterized in that: The vacuum support system includes: i, a main pipeline, a mechanical pump is installed at one end of the main pipeline, and the other end is connected to one end of the first branch pipeline, the second branch pipeline, the third branch pipeline, and the fourth branch pipeline respectively; ii, a first branch pipeline, on which a pre-extraction valve is installed; iii, a second branch pipeline, on which a second fore valve, a second resistance gauge, a molecular pump, and a second gate valve are installed; iv. a third branch pipeline, on which a third fore valve, a third resistance gauge, a cryogenic pump, and a third gate valve are installed; iv, a fourth branch pipeline, on which a fourth vacuum gauge and a balancing valve are installed; Wherein, the other ends of the second branch pipe and the third branch pipe are both connected to the vacuum container; Wherein, the other end of the fourth branch pipe is communicated with the balancing chamber.

6. A vibration environment simulation test system under vacuum conditions as claimed in claim 1, characterized in that: A pressure gauge, a resistance gauge, an ionization gauge, and an air release valve are arranged on the top of the vacuum container.

7. A vibration environment simulation test system under vacuum conditions as claimed in claim 5, characterized in that: Also includes: air compressor; The pre-pumping valve, the second front-stage valve, the third front-stage valve, and the balancing valve are all pneumatic valves; The air compressor provides air source power to the pre-pumping valve, the second front-stage valve, the third front-stage valve, and the balancing valve.

8. The vibration environment simulation test system under vacuum conditions according to claim 5, characterized in that: Also includes: Cooling circulating water machine; The cooling water system provides cooling for the molecular pump and cryogenic pump of the vacuum system.

9. A vibration environment simulation test system under vacuum conditions as claimed in claim 1, characterized in that: The temperature assurance system includes: heat sink, infrared heating cage, mechanical refrigeration system, and heating power supply; The heat sink is arranged inside the vacuum container, and the inner surface of the heat sink is painted black; The infrared heating cage is arranged inside the heat sink; A workpiece platform is provided in the heating cage; the workpiece platform is used to place the workpiece to be measured; The mechanical refrigeration system uses a refrigerant medium to cool the heat sink; The heating power supply is connected to the infrared heating cage.

10. A vibration environment simulation test system under vacuum conditions according to claim 9, characterized in that: The outer surface of the heat sink is electroplated or wrapped with a stainless steel reflective screen to increase the reflectivity, and the inner surface is painted with black paint with an absorptivity of 0.92 and a reflectivity of 0.90.

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