Framework pressure test device

Abstract

The utility model discloses a framework pressure testing device, which relates to the technical field of framework pressure testing and comprises a framework pressure testing assembly and a pressurizing device. The framework pressure test assembly comprises a bobbin, an air bag and an adjusting assembly; one end of the bobbin is provided with a bobbin cover, the adjusting assembly comprises a baffle ring, the baffle ring is arranged in the bobbin and is opposite to the bobbin cover, and the air bag is arranged in the bobbin and is located between the bobbin cover and the baffle ring; the air bag is provided with a hollow cavity used for containing a framework to be tested, the air bag is communicated with the pressurizing device through a pipeline, and the pressurizing device inflates the air bag so that the air bag can wrap the framework to be tested and apply testing pressure to the framework to be tested. The testing result is more accurate and reliable, the steps are simple, the operation is convenient, and the testing efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of skeleton pressure testing technology, and in particular to a skeleton pressure testing device. Background Technology

[0002] The frame is installed in the oil filter, fuel filter, and transmission filter. During the frame research and design stage, a pressure collapse test is required, which is to test the pressure collapse resistance of the outer surface of the frame under different pressures. For frame structures with filter screens, it is necessary to test the ultimate pressure when the joint between the filter screen and the frame breaks.

[0003] Current methods for testing the compressive strength of filter frames involve wrapping multiple layers of transparent tape around the outside of the frame, sealing both ends, and then applying pressure to the tape. The pressure is transferred to the frame through the tape, thus completing the compressive strength test. This traditional method is complex, requiring manual tape wrapping and is therefore time-consuming. Furthermore, the tape itself provides some support, leading to discrepancies between the final test results and actual conditions. For filter frames with filters, a bursting pressure test between the frame and filter is also necessary during the research and design phase, but an effective testing method has not yet been found.

[0004] In view of the problems existing in the prior art, those skilled in the art urgently need a skeleton pressure testing device. Utility Model Content

[0005] The purpose of this invention is to provide a skeleton pressure testing device to solve the problems existing in the prior art. It can more realistically simulate the actual stress state of the skeleton inside the filter, and the test results are more accurate and reliable. Moreover, the steps are simple and easy to operate, which greatly improves the testing efficiency.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] This utility model provides a skeleton pressure testing device, including a skeleton pressure testing assembly and a pressurizing device; the skeleton pressure testing assembly includes a tube, an air bladder, and an adjusting assembly; one end of the tube is provided with a cap, the adjusting assembly includes a retaining ring, the retaining ring is disposed inside the tube and opposite to the cap, the air bladder is disposed inside the tube and located between the cap and the retaining ring; the air bladder has a hollow chamber for placing the skeleton to be tested, the air bladder is connected to the pressurizing device through a pipeline, and the pressurizing device inflates the air bladder so that the air bladder covers the skeleton to be tested and applies test pressure to the skeleton to be tested.

[0008] In some embodiments, the adjustment assembly further includes a plurality of adjusting screws and a plurality of supports, with each adjusting screw corresponding to one of the supports; the plurality of supports are arranged around the outer side of the other end of the tube, and one end of each of the plurality of adjusting screws passes through the corresponding support and extends into the tube to connect with the retaining ring; the plurality of adjusting screws are threadedly connected to the corresponding supports, and the plurality of adjusting screws can drive the retaining ring to move along the axial direction of the tube to adjust the length of the airbag along the axial direction of the tube.

[0009] In some embodiments, a partition is also included, the partition having an inverted U-shaped structure and including two side plates arranged at relative intervals; the number of the skeleton pressure test assembly is provided in multiple sets; the tubes of the multiple sets of the skeleton pressure test assembly are all disposed between the two side plates, and the two ends of the tubes pass through the corresponding side plates respectively, and the outer wall of the tubes is connected and fixed to the two side plates; the tubes of the multiple sets of the skeleton pressure test assembly have different diameters to adapt to the skeletons to be tested of different sizes.

[0010] In some embodiments, the tube includes a first cylinder and a second cylinder, one end of the first cylinder along its length is threaded to one end of the second cylinder, and the other end of the first cylinder along its length is threaded to the cylinder cover; the cylinder cover and the retaining ring both have through holes axially provided in their middle portions for the skeleton to be tested to pass through.

[0011] In some embodiments, there are multiple pipelines, each pipeline being connected to one of the multiple skeleton pressure test components; one end of each pipeline passes through the side wall of the corresponding cylinder and is connected to the corresponding airbag, and the other end is connected to the pressurization device; each pipeline is equipped with a valve.

[0012] In some embodiments, the system also includes a cabinet and a slot plate; the bottom end of the slot plate is connected and fixed to the top end of the cabinet, and a slot is formed on the slot plate; the bottom of the two side plates of the partition are inserted into the corresponding slots and fixed by fasteners.

[0013] In some embodiments, the bracket has a Z-shaped structure, one end of the bracket is connected and fixed to the corresponding side plate by fasteners, and the other end is provided with a connecting hole, a bushing is provided in the connecting hole, and the adjusting screw passes through the bushing and is threadedly connected to the bushing.

[0014] In some embodiments, a limiting block is also included. The limiting block has an L-shaped structure, with one end of the limiting block connected and fixed to the side plate of the partition and the other end connected and fixed to the outer wall of the tube.

[0015] In some embodiments, the pressurizing device is an air pump.

[0016] In some embodiments, the airbag is an annular airbag, and the inner ring side of the annular airbag is used to place the skeleton to be tested.

[0017] The present invention achieves the following technical advantages over the prior art:

[0018] The skeleton pressure testing device of this utility model has an air bladder located inside a tube, with the skeleton to be tested located in the hollow cavity of the air bladder. By enclosing the skeleton under test with the air bladder, and pressurizing the air bladder to inflate it, the air bladder can directly apply test pressure to the enclosed skeleton. Since no additional auxiliary structures are needed, applying pressure to the skeleton through the air bladder can more realistically simulate the actual stress state of the skeleton inside the filter, resulting in more accurate and reliable test results. Furthermore, it reduces the need for additional preparation steps before testing, and the steps are simple and easy to operate, greatly improving testing efficiency. In other words, this utility model can avoid the problems of complex operation procedures, long time consumption, and deviations between the test state and the actual stress state in existing testing methods.

[0019] Furthermore, this utility model allows for adjustable testing depth inside the pipe by turning the adjusting screw, which, under the support of the bracket, drives the retaining ring to move axially along the tube to push the airbag inside the tube to contract. That is, by adjusting the position of the retaining ring, the extension and retraction length of the airbag along the tube axial direction can be adjusted accordingly to adapt to test skeletons of different lengths.

[0020] Furthermore, the testing device of this utility model is equipped with multiple sets of skeleton pressure testing components, and the tubes of the multiple sets of skeleton pressure testing components have different diameters to adapt to skeletons of different diameters to be tested. That is, this utility model provides tubes of various diameter specifications, and the tubes are equipped with matching airbags, which can adapt to pressure testing of skeletons of different specifications. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is one of the overall structural schematic diagrams of the skeleton pressure testing device in some embodiments of this utility model;

[0023] Figure 2 This is the second schematic diagram of the overall structure of the skeleton pressure testing device in some embodiments of this utility model;

[0024] Figure 3 This is a cross-sectional view of the skeleton pressure testing assembly in some embodiments of this utility model;

[0025] Figure 4 for Figure 1 A magnified view of a section at point A in the middle;

[0026] Figure 5 for Figure 1 A magnified view of a section at point B in the middle;

[0027] Figure 6 for Figure 2 A magnified view of a section at point C;

[0028] Figure 7 for Figure 3 A magnified view of a section at point D;

[0029] Figure 8 This is a top view of the skeleton pressure testing device without the top plate of the cabinet in some embodiments of this utility model.

[0030] Figure 9 This is a three-dimensional structural diagram of the skeleton pressure testing device without the cabinet body and cabinet door in some embodiments of this utility model.

[0031] In the diagram: 1-Frame pressure test assembly; 2-Pressure device; 3-Pipeline; 4-Baffle; 5-Valve; 6-Cabinet; 7-Slot plate; 8-Limit block; 9-Bushing;

[0032] 11-Boll tube; 12-Airbag; 13-Adjusting assembly; 41-Side plate;

[0033] 111-First cylinder; 112-Second cylinder; 113-Cylinder cover;

[0034] 131-Retaining ring; 132-Adjusting screw; 133-Bracket. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] The purpose of this invention is to provide a skeleton pressure testing device to solve the problems existing in the prior art, and to avoid the problems of complex operation procedures, long time consumption, and deviation between the test state and the actual stress state in the existing test methods.

[0037] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] Example 1

[0039] This utility model provides a skeleton pressure testing device, such as Figures 1 to 9 As shown, the device includes a skeleton pressure testing assembly 1 and a pressurizing device 2. The skeleton pressure testing assembly 1 includes a tube 11, an air bladder 12, and an adjusting assembly 13. The adjusting assembly 13 includes a retaining ring 131. One end of the tube 11 is provided with a tube cap 113. The retaining ring 131 is disposed inside the tube 11 and is disposed opposite to the tube cap 113. The air bladder 12 is disposed inside the tube 11 and is located between the tube cap 113 and the retaining ring 131. When the air bladder 12 is in the inflated state, its two ends in the length direction abut against the tube cap 113 and the retaining ring 131, respectively. The retaining ring 131 can move along the axial direction of the tube 11 to adjust the expansion length of the air bladder 12 along the axial direction of the tube 11.

[0040] like Figure 3 As shown, the airbag 12 has a hollow chamber. The skeleton to be tested is placed in the hollow chamber for pressure testing. The airbag 12 is connected to the pressurizing device 2 through the pipe 3. The pressurizing device 2 can inflate the airbag 12 so that the airbag 12 expands and completely covers the skeleton to be tested. The airbag 12 abuts against the outer wall of the skeleton to be tested and applies test pressure to the skeleton. The pressurizing device 2 can adjust the magnitude of the test pressure applied to the skeleton by the airbag 12.

[0041] It should be noted that the inner wall of the tube 11, the outer wall of the skeleton to be tested, the tube cover 113 and the retaining ring 131 form the expansion area of ​​the airbag 12. That is, when the airbag 12 is inflated, its two ends abut against the tube cover 113 and the retaining ring 131, and its outer side abuts against the inner wall of the tube 11, and its inner side abuts against the skeleton to be tested. When the pressurizing device 2 continuously inflates the airbag 12, the gas pressure in the airbag 12 increases, thereby increasing the pressure applied to the skeleton to be tested, thus realizing the pressure test of the skeleton to be tested.

[0042] In some implementations, such as Figure 3 and Figure 6 As shown, the adjustment assembly 13 also includes a plurality of adjustment screws 132 and a plurality of brackets 133. The plurality of adjustment screws 132 and the plurality of brackets 133 are arranged in a one-to-one correspondence, and the plurality of brackets 133 are arranged around the outside of one end of the tube 11. One end of the plurality of adjustment screws 132 passes through the corresponding bracket 133 and extends into the tube 11 from one end of the tube 11 and is connected to the retaining ring 131.

[0043] Multiple adjusting screws 132 are threadedly connected to corresponding brackets 133. By turning the adjusting screws 132 relative to the brackets 133, the adjusting screws 132 can drive the retaining ring 131 to move along the axial direction of the tube 11, thereby adjusting the length of the airbag 12 along the axial direction of the tube 11.

[0044] It should be noted that in this embodiment of the present invention, the number of adjusting screws 132 and brackets 133 is set to three. Those skilled in the art can specifically set the number of adjusting screws 132 and brackets 133, and the present invention does not make specific limitations in this regard.

[0045] In some embodiments, a partition 4 is also included, which has an inverted U-shaped structure and includes a top plate and two side plates 41. Multiple sets of skeleton pressure test components 1 are provided, and the multiple sets of skeleton pressure test components 1 are arranged at intervals in the vertical direction and are all connected to the partition 4. Specifically, the tube 11 of each set of skeleton pressure test components 1 is arranged between the two side plates 41 and the two ends of the tube 11 pass through the corresponding side plates 41 respectively. The outer wall of the tube 11 is connected and fixed to the two side plates 41 by fasteners.

[0046] The multi-frame pressure test assembly 1 of this utility model has different tube diameters for the tube 11, so that it can be adapted to test frames of different diameters.

[0047] It should be noted that the present invention provides two partitions 4 and four sets of skeleton pressure test components 1 on each partition 4, thereby providing skeleton pressure test components 1 with eight pipe diameter specifications, which can be adapted to pressure testing of skeletons of different specifications; and those skilled in the art can specifically set the number of partitions 4 and skeleton pressure test components 1, which is not specifically limited in the present invention.

[0048] In some implementations, see further reference. Figure 3 As shown, the tube 11 also includes a first cylinder 111 and a second cylinder 112. One end of the first cylinder 111 along its length is threadedly connected to one end of the second cylinder 112, and the other end of the first cylinder 111 along its length is threadedly connected to the cylinder cover 113.

[0049] Both the cylinder cover 113 and the retaining ring 131 have through holes in the middle for the skeleton to be tested to pass through.

[0050] In some implementations, such as Figure 8 and Figure 9 As shown, the present invention has multiple pipelines 3, and multiple sets of skeleton pressure test components 1 are connected to the pressurization device 2 through corresponding pipelines 3. Each pipeline 3 is equipped with a valve 5, which can control the inflation of the airbag 12 of the skeleton pressure test component 1.

[0051] The pressurization device 2 of this utility model is an air pump, and the air bag 12 is an annular air bag. The skeleton to be tested is placed on the inner ring side of the annular air bag. The pressure test of the skeleton to be tested can be achieved by inflating the annular air bag with the air pump.

[0052] The multiple pipelines 3 of this utility model are combined and connected through tees, crosses and elbows to jointly connect to the pressurization device 2.

[0053] In some implementations, such as Figure 4 As shown, the skeleton pressure testing device of this utility model also includes a cabinet 6 and a slot plate 7. The bottom end of the slot plate 7 is connected and fixed to the top end of the cabinet 6. The slot plate 7 is provided with slots. The bottom of the two side plates 41 of the partition 4 are inserted into the corresponding slots and fixed by fasteners.

[0054] The cabinet 6 includes a shell, cabinet doors, handles and storage compartments. The pressurization device 2 is installed inside the cabinet 6, and the pipeline 3 passes through the shell and is connected to the pressurization device 2.

[0055] In some implementations, such as Figure 3 and Figure 7 As shown, the bracket 133 has a Z-shaped structure. One end of the bracket 133 is connected and fixed to the side plate of the partition 4 by fasteners, and the other end is provided with an assembly hole. A bushing 9 is provided in the assembly hole, and the adjusting screw 132 passes through the bushing 9 and is threadedly connected to the bushing 9.

[0056] In some implementations, such as Figure 5 As shown, it also includes a limiting block 8, which has an L-shaped structure. One end of the limiting block 8 is connected and fixed to the side plate 41 of the partition 4 by fasteners, and the other end is connected and fixed to the outer wall of the tube 11 by fasteners.

[0057] It should also be noted that the fasteners involved in this utility model can be bolts, nuts, self-tapping screws, etc.

[0058] Example 2

[0059] This embodiment provides a skeleton compression test method, using the skeleton compression test device in Embodiment 1, to test the skeleton's resistance to compression collapse. The method includes the following steps:

[0060] The skeleton to be tested is placed in the hollow cavity of the air bladder 12 of the skeleton pressure test assembly 1, and the air bladder 12 covers the skeleton to be tested.

[0061] Close valve 5 on the corresponding pipeline 3, open the switch of pressurizing device 2, observe the pressure gauge, and when the pressure gauge reading reaches the test pressure, slowly open valve 5 to reduce the pressure gauge reading.

[0062] When the pressure gauge reading reaches the test pressure again, turn off the switch of pressurization device 2 and maintain the pressure for a period of time to complete the test.

[0063] It should be noted that before testing, the power switch should be turned on and the cabinet door of the cabinet 6 should be opened; a tube 11 matching the skeleton to be tested should be selected, and the skeleton should be placed inside the airbag 12. The skeleton should be placed from the side where the retaining ring 131 is installed on the tube 11. Care should be taken to avoid the skeleton scratching the airbag 12 during placement; three brackets 133, three adjusting screws 132 and retaining ring 131 should be taken out and installed. The airbag 12 should be adjusted to a suitable position by rotating the adjusting screws 132 so that the skeleton is completely wrapped by the airbag 12, and the two ends of the airbag 12 are slightly longer than the two ends of the skeleton, so as to facilitate the observation of the skeleton's state during testing; a pressure gauge is used to measure the pressure value at the output end of the pressurizing device 2.

[0064] Specifically, first check that all valves 5 on pipeline 3 are closed. Then turn on the air pump switch and observe the pressure gauge reading. When the pressure gauge reading reaches the test pressure value, slowly open the valve 5 corresponding to the test cylinder 11. Observe the pressure gauge reading again and find that the pressure gauge reading will decrease. When the pressure gauge reading reaches the test pressure again, immediately turn off the air pump switch and then maintain the pressure for one minute to complete the test.

[0065] After completing the above operations, close the cabinet door, double-check to ensure the air pump is off, all valves 5 are closed, and finally turn off the main power switch.

[0066] Example 3

[0067] This embodiment provides a method for testing the filter frame pressure, using the filter frame pressure testing device from Embodiment 1, to test the ultimate pressure at the joint between the filter screen and the frame when the filter screen has a filter frame structure ruptures. The method includes the following steps:

[0068] The skeleton to be tested is placed in the hollow cavity of the air bladder 12 of the skeleton pressure test assembly 1, and the air bladder 12 covers the skeleton to be tested.

[0069] Close valve 5 on the corresponding pipeline 3, open the switch of pressurizing device 2, slowly open valve 5, and observe the pressure gauge reading. The pressure gauge reading gradually increases until it approaches the limit pressure of the skeleton to be tested.

[0070] When the pressure gauge reading suddenly decreases, turn off the pressure device 2 switch to complete the test.

[0071] It should be noted that before testing, the power switch should be turned on and the cabinet door of the cabinet 6 should be opened; a tube 11 matching the skeleton to be tested should be selected, and the skeleton should be placed inside the airbag 12. The skeleton should be placed from the side where the retaining ring 131 is installed on the tube 11. Care should be taken to avoid the skeleton scratching the airbag 12 during placement; three brackets 133, three adjusting screws 132 and retaining ring 131 should be taken out and installed. The airbag 12 should be adjusted to a suitable position by rotating the adjusting screws 132 so that the skeleton is completely wrapped by the airbag 12, and the two ends of the airbag 12 are slightly longer than the two ends of the skeleton, so as to facilitate the observation of the skeleton's state during testing; a pressure gauge is used to measure the pressure value at the output end of the pressurizing device 2.

[0072] Specifically, first check that all valves 5 on pipeline 3 are closed. Then turn on the air pump switch and slowly open the valve 5 corresponding to the test tube 11. Observe the pressure gauge reading. When the pressure gauge reading slowly increases to close to the design limit pressure, pay close attention to the pressure gauge pointer. When the pointer suddenly drops back, immediately turn off the air pump switch to complete the test.

[0073] After completing the above operations, close the cabinet door, double-check to ensure the air pump is off, all valves 5 are closed, and finally turn off the main power switch.

[0074] This utility model provides a skeleton pressure testing device with various pipe diameter specifications and adjustable pipe depth, adaptable to pressure testing of skeletons of different specifications. The selectable pipe diameter is achieved through the design of eight different pipe diameters, matching different pipe diameters for skeletons of different diameters. The variable depth is achieved by rotating and adjusting the extension and retraction of three adjusting screws 132, thereby pushing the internal air bladder 12 of the cylinder 11 to contract, realizing the adjustable testing depth inside the cylinder 11. This utility model, through its adjustable structure, makes the equipment universally applicable, capable of performing pressure tests on skeletons of different diameters and lengths, reducing additional preparation steps before testing, simplifying the operation, and greatly improving testing efficiency. In other words, this utility model has a wide testing range, with selectable pipe diameters and adjustable depths, meeting the testing requirements for skeletons with diameters of 10mm-80mm and lengths of 70mm-300mm.

[0075] Traditional testing methods rely on the inherent support force of the tape, leading to discrepancies between the tested stress and the actual stress. This invention better simulates the real working conditions of the filter housing by using an internal pressure airbag 12 instead of the wrapping tape. The principle is similar to "taking the blood pressure of the filter housing," more closely reflecting the actual stress state of the housing, resulting in more accurate test results. In other words, because this invention does not require additional auxiliary structures, it can realistically simulate the actual stress state of the filter housing inside the filter, leading to more accurate and reliable test results.

[0076] The pressure airbag 12 of this utility model is replaceable, which can meet different types of testing needs; the test methods in Embodiment 2 and Embodiment 3 are easy to switch; after testing the compressive collapse resistance of the skeleton, it is only necessary to replace it with another type of airbag 12 to achieve the test of the ultimate separation pressure at the joint position of the skeleton and the filter.

[0077] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A skeleton pressure testing device, characterized in that, Includes skeleton pressure testing components and pressurization device; The skeleton pressure test assembly includes a tube, an air bladder, and an adjustment assembly; One end of the tube is provided with a tube cover, the adjusting component includes a retaining ring, the retaining ring is disposed inside the tube and is disposed opposite to the tube cover, and the airbag is disposed inside the tube and is located between the tube cover and the retaining ring; The airbag has a hollow chamber for placing the skeleton to be tested. The airbag is connected to the pressurizing device through a tube. The pressurizing device inflates the airbag so that the airbag covers the skeleton to be tested and applies test pressure to the skeleton to be tested.

2. The skeleton pressure testing device according to claim 1, characterized in that, The adjustment assembly also includes multiple adjustment screws and multiple brackets, with each of the multiple adjustment screws and multiple brackets corresponding to one another. Multiple brackets are arranged around the outside of the other end of the tube, and one end of each of the multiple adjusting screws passes through the corresponding bracket and extends into the tube to connect with the retaining ring; The plurality of adjusting screws are threadedly connected to the corresponding brackets, and the plurality of adjusting screws can drive the retaining ring to move along the axial direction of the tube to adjust the length of the airbag along the axial direction of the tube.

3. The skeleton pressure testing device according to claim 2, characterized in that, It also includes a partition, which has an inverted U-shaped structure and includes two side plates arranged at relative intervals; the number of the skeleton pressure test assembly is set to multiple sets; The tubes of the multiple sets of the skeleton pressure test assembly are all disposed between the two side plates, and the two ends of the tubes pass through the corresponding side plates respectively, and the outer wall of the tubes is connected and fixed to the two side plates; The tubes of the multiple sets of skeleton pressure test assemblies have different diameters to accommodate skeletons of different sizes to be tested.

4. The skeleton pressure testing device according to claim 1, characterized in that, The tube also includes a first cylinder and a second cylinder, one end of the first cylinder along its length is threadedly connected to one end of the second cylinder, and the other end of the first cylinder along its length is threadedly connected to the cylinder cover. Both the cylinder cover and the retaining ring have through holes along the axial direction in the middle for the skeleton to be tested to pass through.

5. The skeleton pressure testing device according to claim 3, characterized in that, The pipeline is configured to have multiple lines, and each of the multiple pipelines is connected to a corresponding multiple skeleton pressure test components; One end of each of the pipes passes through the side wall of the corresponding cylinder and is connected to the corresponding airbag, while the other end is connected to the pressurizing device; each of the pipes is equipped with a valve.

6. The skeleton pressure testing device according to claim 3, characterized in that, It also includes the cabinet body and the card slot panel; The bottom end of the card slot plate is connected and fixed to the top end of the cabinet. Card slots are formed on the card slot plate. The bottom of the two side plates of the partition are inserted into the corresponding card slots and fixed by fasteners.

7. The skeleton pressure testing device according to claim 3, characterized in that, The bracket has a Z-shaped structure. One end of the bracket is connected and fixed to the corresponding side plate by fasteners, and the other end is provided with an assembly hole. A bushing is provided in the assembly hole, and the adjusting screw passes through the bushing and is threadedly connected to the bushing.

8. The skeleton pressure testing device according to claim 3, characterized in that, It also includes a limiting block, which has an L-shaped structure. One end of the limiting block is connected and fixed to the side plate of the partition, and the other end is connected and fixed to the outer wall of the tube.

9. The skeleton pressure testing device according to claim 1, characterized in that, The pressurization device is an air pump.

10. The skeleton pressure testing device according to claim 1, characterized in that, The airbag is an annular airbag, and the inner ring side of the annular airbag is used to place the skeleton to be tested.

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