A compression testing machine apparatus

Abstract

The application discloses a pressure testing machine device, and belongs to the technical field of testing machines, and mainly comprises a testing machine body, an outer shell is fixed on one side of the testing machine body, two groups of first fixing rods are fixed on the inner wall of the outer shell, connecting pipes are fixed on the inner wall of the first fixing rods, double-way electromagnetic valve bodies are fixed on one end of the connecting pipes, and the pressure testing machine device is provided with a sliding assembly, the elastic effect of the spring is utilized, the sliding shell can be flexibly slid in the plug, when the connecting pipe needs to be disassembled, the position of the limiting shell is changed by pushing the limiting shell first, the limiting of the sliding ball is released, the quick disassembly of the connecting pipe is realized, meanwhile, the design is simple and reliable, component damage caused by frequent disassembly can be effectively avoided, the maintenance efficiency and service life of the device are improved, and the stable operation of the pressure testing machine device is ensured.

Description

Technical Field

[0001] This application relates to the field of testing machine technology, specifically a pressure testing machine device. Background Technology

[0002] The pressure testing machine is a static testing device for verifying the safety performance of sealed pressure vessels. It belongs to the branch of special pressure testing equipment. Its core functions include ultimate pressure resistance analysis, determination of the deformation and rupture threshold of the pressure cooker body under overpressure conditions, detection of leakage rate of sealing structure using efficient leak detection technology, quantification of the sealing performance of key components, dynamic response testing of safety valves to capture opening / reseating pressure and discharge characteristics in real time, and multi-condition pressure cycle data acquisition to simulate long-term fatigue damage. The equipment supports pressure range of 0-15MPa and high temperature testing of 180℃, and is adaptable to customized testing needs of pressure cooker bodies, valve bodies, and sealing ring components to ensure that products comply with GB / ISO safety standards.

[0003] A low-pressure testing machine, as disclosed in application number CN202121663743.9, includes a base, T-bolts, a testing chamber, a filter box, and a delivery air pump. The testing chamber is mounted on the top of the base, and a cleanroom is mounted on the top of the base on one side of the testing chamber. An air storage tank is mounted on the end of the base away from the cleanroom. The delivery air pump is mounted on the top of the base on the side of the air storage tank, and its bottom end is fixedly connected to the base. A delivery pipe is mounted on the outer wall of the delivery air pump, and one end of the delivery pipe extends into the interior of the cleanroom. A filter box is mounted on the top of the cleanroom, and a filter screen is mounted at the center of the filter box. An air inlet pipe is mounted on the outer wall of the filter box on one side of the filter screen, and one end of the air inlet pipe extends into the interior of the testing chamber.

[0004] However, loading and unloading test specimens can cause several problems for the pressure cooker pressure testing machine. First, the operating efficiency drops significantly. Traditional fixed pipelines require manual threading and wrapping with Teflon tape, taking 5-8 minutes per loading and unloading. In high-frequency testing scenarios, this wastes more than 40 minutes per day. Human error can also lead to poor sealing and increased rework rates. Second, safety risks increase significantly. There is no automatic sealing function during disassembly, and residual high-pressure gas or high-temperature steam in the pipeline can easily spray out, causing burns or cuts to operators. Furthermore, there is no anti-accidental disconnection design, and accidental collisions can easily cause the pipeline to detach, leading to overpressure. Finally, the adaptability is poor. Multiple sets of fixed pipelines need to be customized for different models of pressure cookers, resulting in high equipment costs. Rigid pipelines are difficult to adapt to irregular interfaces, and frequent disassembly can damage the interfaces, increasing maintenance costs and downtime.

[0005] Therefore, it is necessary to provide a pressure testing machine device to solve the above problems.

[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0007] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is: to provide a pressure testing machine device that can easily disassemble the connection between the pressure cooker and the testing machine / solve the efficiency and safety problems in pressure cooker testing.

[0008] The technical solution adopted by this application to solve its technical problem is: a pressure testing machine device, including a testing machine body, a shell fixed on one side of the testing machine body, two sets of first fixing rods fixed on the inner wall of the shell, a connecting pipe fixed on the inner wall of the first fixing rod, a dual-way solenoid valve body fixed at one end of the connecting pipe, and one side of the dual-way solenoid valve body fixedly connected to one end of another set of first fixing rods through a mounting block. The bottom of the dual-way solenoid valve body is fixed with multiple sets of second fixing rods by mounting blocks. The other end of the second fixing rod is fixed with a mounting shell. The bottom of the dual-way solenoid valve body is provided with a flexible tube by a fixing pipe. The other end of the flexible tube is fixed with a plug. The inner wall of the plug is provided with a first limiting groove. The inner wall of the plug is provided with a sliding component. The sliding assembly includes a spring fixed to the inner wall of the plug, a sliding shell fixed to the top of the spring, a first air outlet on the inner wall of the sliding shell, and a connector sliding on the outer side of the plug.

[0009] Furthermore, the inner wall of the connector is provided with a second limiting groove, the inner wall of the second limiting groove is provided with a sliding ball, the outer side of the connector slides with a limiting shell, and the inner wall of the limiting shell is in rolling connection with the outer side of the sliding ball. The inner wall of the hose is provided with three flow dividers, and the flow dividers have different apertures.

[0010] Furthermore, a fixed shell is fixed to the inner wall of the outer shell, a first sliding groove is formed on the inner wall of the fixed shell, a rotating disk is rotatably formed on the inner wall of the fixed shell, six sets of second sliding grooves are formed on the inner wall of the rotating disk, and six sets of third sliding grooves are formed on the top of the fixed shell. Fixed columns slide on the inner walls of the six sets of second sliding grooves.

[0011] Furthermore, a fixing block is fixed to the outer side of the fixing column, and the outer side of the fixing block is slidably connected to the inner wall of the third sliding groove. A fixing plate is fixed to the top of the fixing block, and the inner wall of the fixing plate is arc-shaped.

[0012] Furthermore, two sets of fixing discs are fixed on the outer side of the mounting shell, and the outer side of the fixing discs is fixedly connected to the bottom of the second fixing rod. A sliding column slides on the inner wall of the fixing disc, a sealing soft pad is fixed at one end of the sliding column, and a threaded rod is fixed at the other end of the sliding column.

[0013] Furthermore, the inner wall of the fixed plate is provided with a second air outlet, and the outer side of the fixed plate is fixedly connected to one end of the hose, and the inner wall of the second air outlet is slidably connected to the outer side of the sealing gasket. An air compressor is fixed to the top of the first fixed rod, and one side of the air compressor is fixedly connected to the inner wall of the main body of the testing machine through a fixed pipe.

[0014] Furthermore, an observation window is provided on the inner wall of the housing, and pressure sensor bodies are provided on the outer sides of both the hose and the fixed plate.

[0015] The beneficial effects of this application are as follows: The pressure testing machine device provided by this application, by setting a sliding component, utilizes the elasticity of the spring to allow the sliding shell to slide flexibly within the plug. When it is necessary to disassemble the connecting pipe, the position of the limiting shell is first changed by pushing it, thereby releasing the limiting of the sliding ball and realizing the rapid disassembly of the connecting pipe. At the same time, this design structure is simple and reliable, effectively avoiding component damage caused by frequent disassembly, improving the maintenance efficiency and service life of the device, and ensuring the stable operation of the pressure testing machine device.

[0016] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is an overall schematic diagram of a pressure testing machine device according to this application; Figure 2 This is a schematic diagram of the dual-channel solenoid valve body of a pressure testing machine device according to this application; Figure 3 This is a schematic diagram of the fixed plate of a pressure testing machine device according to this application; Figure 4 This is a schematic diagram of the sliding component of a pressure testing machine device according to this application; Figure 5 This is a schematic diagram of a sealing gasket for a pressure testing machine device according to this application; The following are the labeling elements in the figure: 1. Main body of the testing machine; 2. Outer shell; 3. First fixing rod; 4. Connecting pipe; 5. Dual-way solenoid valve body; 6. Second fixing rod; 7. Mounting shell; 8. Hose; 9. Plug; 10. First limiting groove; 11. Sliding assembly; 111. Spring; 112. Sliding shell; 113. First air outlet; 12. Connector; 13. Second limiting groove; 14. Sliding ball; 15. Limiting shell; 16. Diverter plate; 17. Fixing shell; 18. First sliding groove; 19. Rotating disk; 20. Second sliding groove; 21. Third sliding groove; 22. Fixing column; 23. Fixing block; 24. Fixing plate; 25. Fixing disk; 26. Sliding column; 27. Sealing gasket; 28. Threaded rod; 29. ​​Second air outlet; 30. Air compressor; 31. Observation window; 32. Pressure sensor body. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0020] like Figure 1-5 As shown, this application provides a pressure testing machine device, including a testing machine body 1, a housing 2 fixed to one side of the testing machine body 1, two sets of first fixing rods 3 fixed to the inner wall of the housing 2, a connecting pipe 4 fixed to the inner wall of the first fixing rods 3, a dual-way solenoid valve body 5 fixed to one end of the connecting pipe 4, and one side of the dual-way solenoid valve body 5 is fixedly connected to one end of another set of first fixing rods 3 through a mounting block.

[0021] The main body 1 of the testing machine provides a foundation for the installation and fixation of other structures, ensuring the structural stability of the entire device. It also integrates the functional structures required for pressure testing. The outer casing 2 protects other structures from external dust, moisture, and debris, preventing damage. The first fixing rod 3 provides stable support for the connecting pipe 4 and the dual-way solenoid valve body 5. The connecting pipe 4 acts as a bridge connecting the air compressor 30 and the dual-way solenoid valve body 5. The dual-way solenoid valve body 5 can control the pressure on / off and flow direction according to the test requirements. Through electromagnetic control, it can quickly switch pressure paths to apply and release pressure to different test sites, meeting various complex pressure test needs and improving the flexibility and efficiency of the test. In this case... The working principle of the dual-way solenoid valve body 5 is the same as that of the dual-way solenoid valve for controlling valves in the authorized application number CN201610621469.6. The main valve body is connected to the first electromagnetic control module and the second electromagnetic control module. The first valve chamber is provided with the first valve core, and the second valve chamber is provided with the second valve core. The first electromagnetic control module controls the first valve core, and the second electromagnetic control module controls the second valve core, which respectively perform axial reciprocating motion so that the air inlet, air outlet or exhaust port can be selectively opened or blocked. In this invention, the air inlet chamber and air outlet chamber of the first valve chamber are located on the right side and the middle, respectively. The air inlet chamber, air outlet chamber and exhaust chamber of the second valve chamber are located on the right side, the middle and the left side, respectively. It can be seen that the working principle of the dual-way solenoid valve body 5 in this case is the prior art, and will not be elaborated further here.

[0022] The bottom of the dual-way solenoid valve body 5 is fixed with multiple sets of second fixing rods 6 by mounting blocks. The other end of the second fixing rods 6 is fixed with a mounting shell 7. The bottom of the dual-way solenoid valve body 5 is provided with a flexible hose 8 by a fixing tube. The other end of the flexible hose 8 is fixed with a plug 9. The inner wall of the plug 9 is provided with a first limiting groove 10. The inner wall of the plug 9 is provided with a sliding component 11.

[0023] The second fixing rod 6 is used to fix the mounting shell 7 and the fixing plate 25. The mounting shell 7 is used to provide installation space for other structures. The hose 8 is used to transport high-pressure gas and prevent high-pressure gas leakage. The plug 9 is used to connect the connector 12. The two work together to connect the valve and the pressure cooker to prevent gas leakage during transportation. At the same time, different models of pressure cookers can be connected for testing. The first limiting groove 10 can cooperate with the limiting shell 15 to fix the sliding ball 14. The three can form a fixed structure to prevent the plug 9 and the connector 12 from separating. The sliding component 11 is used to realize the linkage when the plug 9 and the connector 12 are connected.

[0024] The sliding assembly 11 includes a spring 111 fixed to the inner wall of the plug 9, a sliding shell 112 fixed to the top of the spring 111, a first air outlet 113 opened on the inner wall of the sliding shell 112, and a connector 12 slidably attached to the outer side of the plug 9.

[0025] The spring 111 is designed to help the sliding shell 112 return to its original position. The sliding shell 112 is linked to another set of sliding shells 112, and they mutually compress the spring 111 by pushing each other from the top. The first air outlet 113 is used in conjunction with the flow divider 16 to adjust the gas flow rate and pressure distribution. It should be noted that a sealing gasket is provided between the sliding shell 112 and the plug 9 to prevent gas leakage. The spring 111 has a stiffness of 35-40 N / mm. Within this stiffness range, the spring 111 can generate a moderate and stable restoring force to help the sliding shell 112 return to its original position. (Connection required.) First, pull the limiting shell 15 to compress the spring 111, pushing the plug 9 into the inner wall of the connector 12. The ball bearing 14 rolls into the second limiting groove 13. Then, push the plug 9 to make the ball bearing 14 roll into the first limiting groove 10. At the same time, the two sets of sliding shells 112 push each other to compress the spring 111, allowing airflow. After reaching the position, release the limiting shell 15 so that the limiting shell 15 and the first limiting groove 10 cooperate to limit and fix the ball bearing 14. At this time, the plug 9 and the connector 12 are connected for high-pressure gas transportation. To disconnect, pull the limiting shell 15 to compress the spring 111.

[0026] The inner wall of the connector 12 is provided with a second limiting groove 13, and the inner wall of the second limiting groove 13 is provided with a sliding ball 14. The outer side of the connector 12 slides with a limiting shell 15, and the inner wall of the limiting shell 15 is in rolling connection with the outer side of the sliding ball 14. The inner wall of the hose 8 is provided with three flow dividers 16, and the flow dividers 16 have different hole diameters.

[0027] The second limiting groove 13 allows the ball bearing 14 to roll in a limited manner. The limiting shell 15 is used to limit the ball bearing 14 when the connector 12 and plug 9 are fixed, together with the first limiting groove 10. The three sets of diverter plates 16 with different orifice diameters are used to divert and guide the high-pressure gas from small to large. This design can ensure that the gas flows evenly to each branch and avoid local flow being too large or too small.

[0028] The inner wall of the outer shell 2 is fixed with a fixed shell 17. The inner wall of the fixed shell 17 is provided with a first sliding groove 18. The inner wall of the fixed shell 17 is rotatably provided with a rotating disk 19. The inner wall of the rotating disk 19 is provided with six sets of second sliding grooves 20. The top of the fixed shell 17 is provided with six sets of third sliding grooves 21. The inner walls of the six sets of second sliding grooves 20 are all slidably provided with fixed posts 22.

[0029] The fixed shell 17 provides an installation base for other structures and provides rotation space for the rotating disk 19. The first slide groove 18 is provided to guide the crank handle, ensuring that the crank handle can only move along a preset curved trajectory. The rotating disk 19 transmits rotational motion to the fixed column 22 through its own rotation. The second slide groove 20 is provided to guide the fixed column 22, ensuring that the fixed column 22 can only move along a preset curved trajectory. The third slide groove 21 is provided to guide the fixed block 23, ensuring that the fixed block 23 can only move along a preset straight trajectory. It should be noted that the crank handle is fixed to the outside of the rotating disk 19. In use, first turn the crank handle, which drives the rotating disk 19 to rotate to the right. Since the fixed column 22 is confined in the second slide groove 20, the rotating disk 19 drives the fixed column 22 to rotate to the right, and the fixed block 23 is confined in the third slide groove 21. The fixed column 22 drives the fixed block 23 to move outward, while converting the rotational motion into a linear motion, realizing the outward expansion of the clamping. If you want to clamp inward, the above operation is reversed.

[0030] A fixing block 23 is fixed to the outside of the fixing column 22, and the outside of the fixing block 23 is slidably connected to the inner wall of the third slide groove 21. A fixing plate 24 is fixed to the top of the fixing block 23, and the inner wall of the fixing plate 24 is arc-shaped.

[0031] The fixing block 23 is used to fix the fixing column 22 and the fixing plate 24. The fixing plate 24 is designed to fix the pressure cooker and prevent it from dislodging.

[0032] Two sets of fixing plates 25 are fixed on the outside of the mounting shell 7, and the outside of the fixing plate 25 is fixedly connected to the bottom of the second fixing rod 6. A sliding column 26 slides on the inner wall of the fixing plate 25. A sealing soft pad 27 is fixed at one end of the sliding column 26, and a threaded rod 28 is fixed at the other end of the sliding column 26.

[0033] The fixed plate 25 provides installation space and sliding guide for the sliding column 26. The sliding column 26 drives the sealing gasket 27 to open and close. The sealing gasket 27, in conjunction with the second air outlet 29, enables the opening and closing of gas inlet and outlet. The threaded rod 28 drives the sliding column 26 to slide. It should be noted that a sealing gasket is installed between the sliding column 26 and the fixed plate 25. Both the sealing gasket and the sealing gasket 27 are made of fluororubber. They can quickly return to their original shape under high pressure or repeated compression, reducing the risk of leakage. A handwheel is fixed to the other end of the threaded rod 28. In use, rotating the handwheel drives the sliding column 26 to slide through the threaded rod 28, thereby opening and closing the sealing gasket 27 and the second air outlet 29.

[0034] The inner wall of the fixed plate 25 is provided with a second air outlet 29, and the outer side of the fixed plate 25 is fixedly connected to one end of the hose 8. The inner wall of the second air outlet 29 is slidably connected to the outer side of the sealing pad 27. An air compressor 30 is fixed to the top of the first fixed rod 3, and one side of the air compressor 30 is fixedly connected to the inner wall of the main body 1 of the testing machine through a fixed pipe.

[0035] The second air outlet 29 is designed to facilitate gas exit while limiting the gas flow rate. The air compressor 30 is designed to supply air, fully supporting production operations and ensuring a stable air supply.

[0036] An observation window 31 is provided on the inner wall of the outer casing 2, and pressure sensor bodies 32 are provided on the outer sides of the hose 8 and the fixed plate 25.

[0037] The observation window 31 is used to check the status of the pressure cooker, and the pressure sensor body 32 is used to receive pressure signals and transmit them to the main body 1 of the testing machine. The working principle of the pressure sensor body 32 in this case is the same as that of the pneumatic pressure sensor with pneumatic pressure transmission in the authorized application number CN202020682878.9. After the gas generated by the battery enters the air hole, the pressure generated is sensed by the pneumatic strain gauge and output. Since the base is made of stainless steel, it is corrosion-resistant, high temperature resistant, and has an integrated structure, preventing air leakage, with high strength and less susceptibility to external influences, which can improve the measurement and response speed of the pressure sensor. Therefore, the working principle of the pressure sensor body 32 in this case is existing technology and will not be elaborated further here. During the test, the dual-way solenoid valve body 5 is activated first. When the pressure sensor body 32 on the hose 8 detects that the pressure is too high, it directly transmits a signal to the main body 1 of the testing machine. The main body 1 of the testing machine will then close the dual-way solenoid valve body 5 and turn on the alarm light. At this time, another valve can be activated for testing.

[0038] Working principle: When connection is required, a pulling force is first applied to the limiting shell 15, compressing the spring 111. At the same time, the plug 9 is pushed towards the inner wall of the connector 12. During this process, the sliding ball 14 will roll into the second limiting groove 13. Then, the plug 9 is continuously pushed, and the sliding ball 14 will roll further into the first limiting groove 10. During this process, the two sets of sliding shells 112 will push against each other and compress the spring 111, thereby aligning the first air outlet 113 and forming a path for airflow, allowing airflow to pass smoothly. When the plug 9 reaches the predetermined position, the pulling force on the limiting shell 15 is released. At this time, the limiting shell 15 will be tightly engaged with the first limiting groove 10 under the rebound action of the spring 111, providing a stable limit for the sliding ball 14. The plug 9 and connector 12 are now connected and can transport high-pressure gas. Simultaneously, turning the crank causes the rotating disk 19 to rotate to the left. Since the fixing post 22 is confined in the second slide groove 20, the rotating disk 19 drives the fixing post 22 to rotate to the left, and the fixing block 23 is confined in the third slide groove 21. The fixing post 22 drives the fixing block 23 to move inward, converting the rotational motion into linear motion, clamping and fixing it inward. After the fixing post 22 has clamped and fixed it, the air compressor 30 starts supplying gas, opening the dual-way solenoid valve body 5, and the hose 8 delivers gas. When the test is complete and the connection needs to be disconnected, simply pull the limit shell 15 again to compress the spring 111, pull out the plug 9, and the spring 111 assists the sliding shell 112 in resetting.

[0039] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A compression testing machine apparatus comprising a testing machine body (1), characterised in that, Also includes: The main body (1) of the testing machine is fixed with a shell (2) on one side. Two sets of first fixing rods (3) are fixed on the inner wall of the shell (2). A connecting pipe (4) is fixed on the inner wall of the first fixing rod (3). A dual-way solenoid valve body (5) is fixed at one end of the connecting pipe (4). One side of the dual-way solenoid valve body (5) is fixedly connected to one end of another set of first fixing rods (3) through a mounting block. The bottom of the dual-way solenoid valve body (5) is fixed with multiple sets of second fixing rods (6) by mounting blocks. The other end of the second fixing rod (6) is fixed with a mounting shell (7). The bottom of the dual-way solenoid valve body (5) is provided with a flexible tube (8) by a fixing pipe. The other end of the flexible tube (8) is fixed with a plug (9). The inner wall of the plug (9) is provided with a first limiting groove (10). The inner wall of the plug (9) is provided with a sliding component (11). The sliding assembly (11) includes a spring (111) fixed to the inner wall of the plug (9), a sliding shell (112) fixed to the top of the spring (111), a first air outlet (113) opened on the inner wall of the sliding shell (112), and a connector (12) sliding on the outer side of the plug (9).

2. A compression testing machine apparatus as claimed in claim 1, wherein: The inner wall of the connector (12) is provided with a second limiting groove (13), and the inner wall of the second limiting groove (13) is provided with a sliding ball (14). The outer side of the connector (12) slides with a limiting shell (15), and the inner wall of the limiting shell (15) is in rolling connection with the outer side of the sliding ball (14). The inner wall of the hose (8) is provided with three flow dividers (16), and the diameter of the flow dividers (16) is different.

3. A compression testing machine apparatus as claimed in claim 1, wherein: The inner wall of the outer shell (2) is fixed with a fixed shell (17). The inner wall of the fixed shell (17) is provided with a first sliding groove (18). The inner wall of the fixed shell (17) is rotated with a rotating disk (19). The inner wall of the rotating disk (19) is provided with six sets of second sliding grooves (20). The top of the fixed shell (17) is provided with six sets of third sliding grooves (21). The inner walls of the six sets of second sliding grooves (20) are all slidably provided with fixed columns (22).

4. A compression testing machine apparatus as claimed in claim 3, wherein: A fixing block (23) is fixed to the outside of the fixing column (22), and the outside of the fixing block (23) is slidably connected to the inner wall of the third slide groove (21). A fixing plate (24) is fixed to the top of the fixing block (23), and the inner wall of the fixing plate (24) is arc-shaped.

5. A compression testing machine apparatus as claimed in claim 1, wherein: Two sets of fixing discs (25) are fixed on the outside of the mounting shell (7), and the outside of the fixing discs (25) is fixedly connected to the bottom of the second fixing rod (6). A sliding column (26) slides on the inner wall of the fixing disc (25). A sealing pad (27) is fixed at one end of the sliding column (26), and a threaded rod (28) is fixed at the other end of the sliding column (26).

6. A compression testing machine apparatus as claimed in claim 5 wherein: The inner wall of the fixed plate (25) is provided with a second air outlet (29), and the outer side of the fixed plate (25) is fixedly connected to one end of the hose (8), and the inner wall of the second air outlet (29) is slidably connected to the outer side of the sealing pad (27). An air compressor (30) is fixed to the top of the first fixed rod (3), and one side of the air compressor (30) is fixedly connected to the inner wall of the test machine body (1) through a fixed pipe.

7. A compression testing machine apparatus as claimed in claim 1, wherein: The inner wall of the outer casing (2) is provided with an observation window (31), and the outer sides of the hose (8) and the fixed plate (25) are provided with pressure sensor bodies (32).

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