Multifunctional test tool for cold air pushing and punching device

Abstract

The utility model provides a multifunctional test tool for a cold air pushing and punching device. The tool comprises a tool frame body, a pushing and punching device fixing structure, a pressure test structure, an inner cylinder protection plate, a thrust selection test structure, a pipeline assembly and a pressure sensor. The pushing and punching device fixing structure, the pressure test structure, the inner cylinder protection plate and the thrust selection test structure are all mounted on the tool frame body; the cold air pushing and punching device is fixedly mounted on the pushing and punching device fixing structure; the pipeline assembly is connected with the cold air pushing and punching device. The pressure sensor is connected with the pipeline assembly; the pipeline assembly is connected with the stamping ground pipeline, the water pressure test bench and / or the air pressure test bench. The device is simple in structure and convenient to install and operate, various types of tests on the cold air pushing and punching device can be achieved, and the test efficiency and the test multifunctionality of the cold air pushing and punching device are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of test fixtures, and in particular to a multifunctional test fixture for a cold-gas push-pull device. BACKGROUND

[0002] A cold-gas push-pull device is a device that uses the energy of compressed cold gas to generate thrust or impulse, and has important applications in the fields of aerospace and industrial production.

[0003] In order to ensure the performance of the cold-gas push-pull device, thrust selection tests and pressure tests need to be performed. The thrust selection tests verify the effective thrust value of the push-pull device under a working pressure of 12 MPa. Under the same pressure, two push rods with a thrust deviation of no more than 2% are selected for installation. The pressure test: pressure sensors are installed at key positions of the device to monitor the change in gas pressure and check the stability and safety of the system within the working pressure range to prevent excessive or insufficient pressure. The pressure test verifies the sealing performance of the cold-gas push-pull device after production and assembly.

[0004] The prior art patent CN115931201B discloses a gas push-pull device energy testing system and testing method, which includes a gas push-pull device, a limiting rotating device, a heavy object bearing device, a gas cylinder for supplying gas to the gas push-pull device, and a rack with a table. The table is fixedly arranged on the upper part of the rack and is elevated above the ground by a certain distance. The gas push-pull device and the heavy object bearing device are both fixedly arranged on the table. This system can effectively detect the push-pull amount of the gas push-pull device and obtain the actual push-pull data of the gas push-pull device. However, it can only realize push-pull amount testing and cannot realize multifunctional testing of the cold-gas push-pull device.

[0005] Therefore, the technical problem to be solved at present is how to provide a multifunctional test fixture for a cold-gas push-pull device, which is simple in structure, easy to install and operate, can realize various types of tests on the cold-gas push-pull device, and improve the test efficiency and multifunctionality of the cold-gas push-pull device. INNOVATION CONTENT

[0006] The present application aims to provide a multifunctional test fixture for a cold-gas push-pull device, which is simple in structure, easy to install and operate, can realize various types of tests on the cold-gas push-pull device, and improve the test efficiency and multifunctionality of the cold-gas push-pull device.

[0007] To achieve the above object, the application provides a multifunctional test tool for cold gas push device, which comprises a tool frame body, a push device fixing structure, a pressure test structure, an inner cylinder protection plate, a push force selection test structure, a pipeline assembly and a pressure sensor; the push device fixing structure, the pressure test structure, the inner cylinder protection plate and the push force selection test structure are all installed on the tool frame body; the cold gas push device is fixedly installed on the push device fixing structure; the pipeline assembly is connected with the cold gas push device; the pressure sensor is connected with the pipeline assembly; the pipeline assembly is connected with a stamping ground pipeline, a hydraulic test bench and / or a pneumatic test bench.

[0008] The multifunctional test tool for cold gas push device as described above, wherein the pipeline assembly has a double-seal joint, a ground pipeline joint and a sensor joint; the double-seal joint is connected with the cold gas push device; the ground pipeline joint is connected with the stamping ground pipeline; and the sensor joint is connected with the pressure sensor.

[0009] The multifunctional test tool for cold gas push device as described above, wherein the push force selection test structure comprises a sensor fixing plate and a push force sensor; the sensor fixing plate is installed on the tool frame body; and the push force sensor is fixedly connected on the sensor fixing plate; the push force sensor is located close to the inner cylinder of the cold gas push device.

[0010] The multifunctional test tool for cold gas push device as described above, wherein the push device fixing structure comprises a push device fixing block and a clamp; the push device fixing block is arranged on the tool frame body; the cold gas push device is installed in a groove of the push device fixing block; and the cold gas push device is fixedly connected with the push device fixing block through the clamp.

[0011] The multifunctional test tool for cold gas push device as described above, wherein the tool frame body has an inner cylinder protection plate insertion slot and a sensor fixing plate insertion slot; the inner cylinder protection plate is inserted into the inner cylinder protection plate insertion slot; and the sensor fixing plate is inserted into the sensor fixing plate insertion slot.

[0012] The multifunctional test tool for cold gas push device as described above, wherein the inner cylinder protection plate and the sensor fixing plate are both movable through-hole plates; the movable through-hole plates have through holes at the center.

[0013] The multifunctional test tool for cold gas push device as described above, wherein the tool frame body has a fixed partition plate; one end of the outer cylinder of the cold gas push device is fixedly connected on the fixed partition plate, and the other end is connected with the pipeline assembly.

[0014] The multifunctional test tool for the cold gas push device has the fixed partition plate with a fixed partition plate through hole, and the inner cylinder of the cold gas push device passes through the fixed partition plate through hole.

[0015] The multifunctional test tool for the cold gas push device has the pressure test structure including a concave spherical surface structure, and the concave spherical surface structure is in surface contact with the end cap of the cold gas push device.

[0016] The multifunctional test tool for the cold gas push device has the double-channel sealing joint provided with an aluminum gasket and a rubber O-shaped sealing ring at the connection of the cold gas push device.

[0017] The application achieves the beneficial effects as follows:

[0018] (1) The multifunctional test tool has simple structure, is convenient to install and operate, can realize various types of tests on the cold gas push device, and improves the test efficiency and test multifunctionality of the cold gas push device.

[0019] (2) The multifunctional test tool is provided with the inner cylinder protection structure, which plays a protection role on the inner cylinder after the inner cylinder is pushed out, and effectively reduces the risk of the inner cylinder out of the groove. DETAILED DESCRIPTION

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments described in the application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0021] Figure 1 It is a structural schematic view of a multifunctional test tool for a cold gas push device.

[0022] Figure 2 It is a structural schematic view of a tool frame body.

[0023] Figure 3 It is a structural schematic view of a pipeline assembly.

[0024] The drawings are as follows: 1-tool frame body; 2-pressure test structure; 3-inner cylinder protection plate; 4-sensor fixing plate; 5-thrust sensor; 6-cold gas push device; 7-push device fixing structure; 8-pipeline assembly; 9-pressure sensor; 11-fixed partition plate; 12-fixed partition plate through hole; 21-concave spherical surface structure; 41-sensor fixing plate through hole; 71-push device fixing movable block; 72-clamp; 81-double-channel sealing joint; 82-ground pipeline joint; 83-sensor joint. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0026] As shown in the drawings, Figures 1-3 The present application provides a multifunctional test tool for a cold gas push device, which comprises a tool frame body 1, a push device fixing structure 7, a pressure test structure 2, an inner cylinder protection plate 3, a push force selection test structure, a pipeline assembly 8 and a pressure sensor 9. The push device fixing structure 7, the pressure test structure 2, the inner cylinder protection plate 3 and the push force selection test structure are all mounted on the tool frame body 1. The pressure test structure 2, the inner cylinder protection plate 3, the push force selection test structure and the push device fixing structure 7 are sequentially and spaced apart along the length direction of the tool frame body 1. The push device fixing structure 7 is used for fixedly connecting a cold gas push device 6. The pressure sensor 9 is used for measuring the value of the pressure (water pressure or air pressure) applied to the cold gas push device 6. The pressure test structure 2 is used for performing a pressure test on the cold gas push device 6. The inner cylinder protection plate 3 is used for protecting the inner cylinder. The push force selection test structure is used for performing a push force selection test on the cold gas push device 6. The pipeline assembly 8 is used for connecting a stamping ground pipeline, a hydraulic test bench, an air test bench and / or the pressure sensor 9 to the cold gas push device 6.

[0027] It needs to be explained that the present application tests the existing cold gas push device 6, which is the device to be tested. The cold gas push device 6 comprises a base, an inner cylinder, an outer cylinder, a static seal ring, a dynamic seal ring and an end cap. The diameter of the inner cylinder is smaller than that of the outer cylinder, and the inner cylinder is arranged inside the outer cylinder. The end cap is connected to the inner cylinder, and the end cap is located at the end of the inner cylinder that extends out of the outer cylinder. One end of the outer cylinder is connected to the base, and the static seal ring is arranged at the connection between the outer cylinder and the base to realize the sealed connection between the two. The dynamic seal ring is arranged between the inner cylinder and the outer cylinder to realize the relative sealing and positioning of the inner cylinder and the outer cylinder. The end cap is usually fixedly connected by a locking nut, which tightly fixes the end cap on the push rod connected to the inner cylinder, so that the end cap and the inner cylinder become an integral whole and can move together during the push process. The cavity between the inner cylinder and the outer cylinder forms a cavity, and the cavity is filled with gas, which can push the inner cylinder to move relative to the outer cylinder in the axial direction.

[0028] It needs to be explained that the cold gas push device 6 is connected to the pipeline assembly 8, and the inner cylinder of the cold gas push device 6 extends out from the end of the cold gas push device 6 that is far away from the pipeline assembly 8 (this end is the end that is not connected to the pipeline assembly 8), or in other words, the inner cylinder extends out in the direction of the push force sensor 5, i.e. Figure 1 the F direction in the figure.

[0029] As shown in Figure 1 , the pressure test structure 2 comprises a concave spherical surface structure 21 for surface contact with the end cap of the cold gas push device 6, the concave spherical surface structure 21 has a semispherical surface groove recessed inward, the opening of the groove is arranged opposite to the end cap connected to the inner cylinder, and the straight line direction of the two is consistent with the direction of the inner cylinder pushing out; the end cap connected to the inner cylinder is located at the end of the cold gas push device 6 away from the pipeline assembly 8. The groove is used to bear the impact of the end cap of the cold gas push device 6 after the inner cylinder pushes out. The pressure test structure 2 is used for water pressure test and air pressure test. During the test, the inner cylinder passes through the through hole of the sensor fixing plate 4, then passes through the through hole of the inner cylinder protection plate 3, and finally contacts the concave spherical surface structure 21.

[0030] As shown in Figure 1 , the push device fixing structure 7 comprises a push device fixing block 71, a clamp 72 and a positioning key; the push device fixing block 71 is arranged on the tool frame body 1, the push device fixing block 71 has a recess for accommodating the cold gas push device 6, after the cold gas push device 6 is installed in the recess of the push device fixing block 71, the cold gas push device 6 is fixedly connected with the push device fixing block 71 through the clamp 72; the clamp 72 is sleeved on the outer wall of the cold gas push device 6 and is fixedly connected with the push device fixing block 71 through a fixing piece (such as a screw). The cold gas push device 6 is installed in the recess and is positioned and connected with the recess through the positioning key, so that the cold gas push device 6 is prevented from moving in the axial direction.

[0031] As a specific embodiment of the utility model, the connecting surface of the cold gas push device 6, the push device fixing block 71 and the clamp 72 is provided with a felt, preferably, the thickness of the felt is 3mm.

[0032] As shown in Figure 1 and 2 , the tool frame body 1 has a fixed partition plate 11, one end of the outer cylinder of the cold gas push device 6 is fixedly connected to the fixed partition plate 11, and the other end is connected to the pipeline assembly 8. The inner cylinder of the cold gas push device 6 extends out from the end of the outer cylinder fixedly connected to the fixed partition plate 11.

[0033] As shown in Figure 1 , the inner cylinder is pushed out from the outer cylinder in the direction F in the drawing, and the push force sensor 5 is arranged on one side of the inner cylinder of the cold gas push device 6 in the direction of pushing out, for measuring the push force of the inner cylinder pushing out.

[0034] As shown in Figure 2 , the fixed partition plate 11 has a through hole, which is a fixed partition plate through hole 12, and the inner cylinder of the cold gas push device 6 passes through the fixed partition plate through hole 12.

[0035] As an embodiment of the utility model, the cold air pushing and punching device 6 is installed on the tool frame body 1, and the cold air pushing and punching device 6 is connected with the pipeline assembly 8 at the position of sealing connection using the process aluminum gasket and the rubber O-shaped sealing ring.

[0036] As shown in Figure 3 The pipeline assembly 8 has a double-seal joint 81, a ground pipeline joint 82 and a sensor joint 83. The pipeline assembly 8 is used for connecting the cold air pushing and punching device 6 with the punching ground pipeline and connecting with the pressure sensor 9. The pressure sensor 9 is a gas pressure sensor. The double-seal joint 81 is used for connecting with the cold air pushing and punching device 6. The double-seal joint 81 is provided with an aluminum gasket and a rubber O-shaped sealing ring at the position of connecting with the cold air pushing and punching device 6. The ground pipeline joint 82 is used for connecting with the punching ground pipeline. The sensor joint 83 is used for connecting with the pressure sensor 9.

[0037] As shown in Figure 1 The thrust selection test structure includes a sensor fixing plate 4, a thrust sensor 5 and a display instrument. The thrust sensor 5 is fixedly connected to the sensor fixing plate 4 and located on the side of the inner cylinder of the cold air pushing and punching device 6. After the thrust sensor 5 is fixedly connected to the sensor fixing plate 4, the thrust sensor 5 and the sensor fixing plate 4 are integrally inserted into the corresponding slot of the tool frame body 1. The thrust sensor 5 is used for measuring the thrust generated by the cold air pushing and punching device 6, and the display instrument is used for displaying the thrust reading of the thrust sensor 5. The thrust sensor 5 is installed at the thrust output end of the cold air pushing and punching device 6, which is simple and direct, and can work well with the device in the use process, reducing the measurement error caused by installation and use.

[0038] As an embodiment of the utility model, the thrust sensor 5 is arranged at the abutting position of the end cap of the cold air pushing and punching device 6 when the inner cylinder of the cold air pushing and punching device 6 is not pushed out. The end cap of the cold air pushing and punching device 6 abuts against the thrust sensor 5, and at this time, the inner cylinder is not pushed out.

[0039] As an embodiment of the utility model, the tool frame body 1 has an inner cylinder protection plate insertion slot and a sensor fixing plate insertion slot. The inner cylinder protection plate 3 is inserted into the inner cylinder protection plate insertion slot, and the sensor fixing plate 4 is inserted into the sensor fixing plate insertion slot, so as to realize the limiting connection of the inner cylinder protection plate 3 and the sensor fixing plate 4 with the tool frame body 1, and prevent the inner cylinder protection plate 3 and the sensor fixing plate 4 from moving along the axial direction of the tool frame body 1.

[0040] As an embodiment of the utility model, the tool frame body 1 is provided with the inner cylinder protection plate insertion slot and the sensor fixing plate insertion slot, so that the inner cylinder protection plate 3 and the sensor fixing plate 4 are accurately assembled into the inner cylinder protection plate insertion slot and the sensor fixing plate insertion slot respectively, that is, the assembly accuracy is ensured, and the shear strength when necessary is also ensured.

[0041] As a specific embodiment of the utility model, the inner cylinder protection plate 3 and the sensor fixing plate 4 are both movable through-hole plates, and the movable through-hole plate is provided with a through hole at the center.

[0042] As shown in Figure 2 The sensor fixing plate 4 is provided with a sensor fixing plate through hole 41 at the center, and the inner cylinder can pass through the sensor fixing plate through hole 41.

[0043] As a specific embodiment of the utility model, after the inner cylinder of the cold gas push-pull device 6 is pushed out, the inner cylinder passes through the through hole of the inner cylinder protection plate 3, and the middle position of the inner cylinder after being pushed out is sleeved with the inner cylinder protection plate 3, so that the inner cylinder is prevented from separating from the concave spherical surface structure 21 and being concave into the hemispherical groove body, the risk of the whole inner cylinder being out of the groove is effectively reduced, and the inner cylinder is protected.

[0044] As a specific embodiment of the utility model, during the push force selection test, the push force value is stable after the inflation pressure is stable, and reading is performed. Specifically, 12MPa air pressure is slowly and uniformly loaded, the air pressure sensor display is observed, when the air pressure is stable at 12.00-12.04, the pressure increasing is stopped, and the air distribution platform stop valve is closed. The display instrument of the push force sensor 5 is observed, and after the display is stable for 2 minutes, the numerical value of the air pressure display and the display instrument of the push force sensor 5 are recorded. The preferred principle is that after a plurality of cold gas push-pull devices complete the push force test, the cold gas push-pull device with a numerical value difference within 2% and the smallest is selected, and two-by-two groups are formed; at the same time, every three groups with a numerical value difference within 2% form one set, and the sets are recorded respectively for complete selection.

[0045] As a specific embodiment of the utility model, the cold gas push-pull device 6 is connected with the stamping ground pipeline, the hydrostatic test bench and / or the pneumatic test bench through the pipeline assembly 8, and pressure test is performed according to the test requirements. After the hydrostatic test is completed, the cold gas push-pull device 6 needs to be disassembled from the test tooling. During disassembly, it needs to be noted that the double-seal joint 81 is cleaned, and the aluminum gasket is completely taken out without residual debris. After the cold gas push-pull device 6 is disassembled, water blowing and cleaning are performed. After the hydrostatic test is completed, the cold gas push-pull device 6 is reinstalled on the test tooling for pneumatic test.

[0046] As a specific embodiment of the utility model, the hydrostatic test (1.5 times overpressure hydrostatic test of working pressure, that is, 18MPa) is as follows:

[0047] 1) At the beginning of pressure loading, the inner cylinder is pushed outwards after being pressed, and is tightly pressed to the pressure test structure 2. The inner cylinder protection plate 3 is used for safety protection.

[0048] 2) When the pressure rises to the working pressure, i.e. 12 MPa, pressure is maintained for 10 minutes, and the overall situation is observed through the high-definition camera. After confirming that there is no abnormality, the pressure is increased to 1.5 times the pressure, and pressure is maintained for 20 minutes, which is observed through the camera, and there should be no abnormal sound, deformation, and pressure drop. Then slowly reduce the pressure to 0 MPa. Retrieve the inner cylinder rod.

[0049] As a specific embodiment of the utility model, the cold gas pusher 6 completed by the water pressure test is disassembled and completely blown off the moisture. After being completely cleaned, check whether each rubber O-shaped sealing ring or check ring is intact; if there is a defect, it is scrapped and replaced; if there is no defect, it is continuously used. The process aluminum washer is directly replaced and used. Reassemble the cold gas pusher 6, replace the new cold gas pusher 6 inlet table double sealing aluminum washer, and stably install the test tooling.

[0050] As a specific embodiment of the utility model, after the water pressure test is completed, the cold gas pusher 6 is connected to the gas distribution table through the pipeline assembly 8 for pressure detection. The pressure detection pressure is 12 MPa. The pressure sensor 9 is used to measure the value of the cold gas pusher 6 pressurization.

[0051] As a specific embodiment of the utility model, the gas pressure test is as follows:

[0052] 1) When the pressure is initially loaded, the inner cylinder is pushed outwards after being pressed, and is tightly pressed onto the pressure test structure 2.

[0053] 2) Slowly press to 12 MPa, and maintain pressure for 20 minutes. Through the camera, there should be no abnormal sound, leakage, and pressure drop. Then use the soap bubble method to observe the pipeline inlet and the junction of the inner and outer cylinders, and no bubbles are required to be generated.

[0054] It needs to be explained that the gas pressure test is a gas tightness test on the cold gas pusher 6. The water pressure test is a hydraulic pressure test on the cold gas pusher 6. The thrust selection test is a thrust test on the cold gas pusher 6 under a fixed pressure.

[0055] It needs to be explained that when the water pressure test and the gas pressure test are performed, the thrust sensor fixing plate 4 and the thrust sensor 5 are not installed, the inner cylinder of the cold gas pusher 6 is pushed out, passes through the through hole of the inner cylinder protection plate 3, and is tightly pressed onto the pressure test structure 2. When the thrust selection test is performed, the thrust sensor fixing plate 4 and the thrust sensor 5 are installed.

[0056] It needs to be explained that the thrust sensor 5 and the pressure sensor used in the present application are existing sensors. Preferably, the present application uses a 50KN thrust sensor, for example, model: BK-4C-50kN, Weika F2211, C9B series sensor of Germany HBM, etc. The pressure sensor model is, for example, SUAY12 series pressure sensor, etc.

[0057] The beneficial effects realized by the present application are as follows:

[0058] (1) The test tool of the present application has simple structure, is convenient to install and operate, can realize various types of tests on the cold-gas pusher device, and improves the test efficiency and test multifunctionality of the cold-gas pusher device.

[0059] (2) The test tool of the present application is provided with an inner cylinder protection structure, which plays a protection role on the inner cylinder after the inner cylinder is pushed out, effectively reducing the risk of the inner cylinder out of the groove.

[0060] In the description of the present application, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0061] In the description of the present application, the word "for example" is used to mean "serving as an example, instance, or illustration". Any embodiment described as "for example" in this application is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is given to enable any person skilled in the art to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that those skilled in the art can realize the present application without using these specific details. In other examples, well-known structures and processes will not be described in detail to avoid unnecessary details making the description of the present application obscure. Therefore, the present application is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of principles and features disclosed in the present application.

[0062] The above only describes the embodiments of the present application and is not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the scope of the claims of the present application.

Claims

1. A multifunctional test fixture for a cold air push-impact device, characterized in that, The fixture includes: fixture frame, push-punch device fixing structure, pressure test structure, inner cylinder protective plate, thrust selection test structure, pipeline assembly and pressure sensor; The fixed structure of the punching device, the pressure test structure, the inner cylinder protective plate, and the thrust selection test structure are all installed on the tooling frame. The cold air pushing device is fixedly installed on the fixed structure of the pushing device; The piping assembly is connected to the cold air pusher device; The pressure sensor is connected to the pipeline assembly; The piping assembly connects to the ground press piping, the hydraulic test bench, and / or the pneumatic test bench.

2. The multifunctional test fixture for a cold air pushing device according to claim 1, characterized in that, The piping assembly has a double-sealed joint, a ground piping joint, and a sensor joint. The double-sealed joint is connected to the cold air pushing device; The ground pipe joint is connected to the stamped ground pipe; The sensor connector is connected to the pressure sensor.

3. The multifunctional test fixture for a cold air pushing device according to claim 1, characterized in that, The thrust selection test structure includes: a sensor mounting plate and a thrust sensor; The sensor mounting plate is mounted on the tooling frame; The thrust sensor is fixedly connected to the sensor mounting plate; The thrust sensor is located on the inner cylinder side near the cold air thrust device.

4. The multifunctional test fixture for a cold air pushing device according to claim 1, characterized in that, The fixing structure of the punching device includes: a fixing block for the punching device and a clamp; The fixed movable block of the punching device is set on the tooling frame; The cold air pusher is installed in the groove of the pusher fixed block; The cold air pushing device is fixedly connected to the pushing device fixing block by a clamp.

5. The multifunctional test fixture for a cold air pushing device according to claim 3, characterized in that, The tooling frame has an inner cylinder protective plate insertion slot and a sensor fixing plate insertion slot; The inner cylinder protective plate is inserted into the inner cylinder protective plate insertion slot; The sensor mounting plate is inserted into the sensor mounting plate insertion slot.

6. The multifunctional test fixture for a cold air pushing device according to claim 5, characterized in that, Both the inner cylinder protective plate and the sensor fixing plate are movable through-hole plates; The movable through-hole plate has a through hole at its center.

7. The multifunctional test fixture for a cold air pushing device according to claim 1, characterized in that, The tooling frame has fixed partitions; One end of the outer cylinder of the cold air pushing device is fixedly connected to the fixed partition plate, and the other end is connected to the pipeline assembly.

8. The multifunctional test fixture for a cold air pushing device according to claim 7, characterized in that, The fixed partition has a fixed partition through hole; The inner cylinder of the cold air pushing device passes through the through hole of the fixed partition.

9. The multifunctional test fixture for a cold air pushing device according to claim 1, characterized in that, The pressure test structure includes a concave spherical structure, which makes surface contact with the end cap of the cold air thrust device.

10. The multifunctional test fixture for a cold air pushing device according to claim 2, characterized in that, An aluminum gasket and a rubber O-ring are provided at the connection between the double-sealed joint and the air-cooled push-impact device.

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