Oil seal air tightness testing tool and use method

Abstract

The present invention relates to the technical field of sealing test, and discloses an oil seal air tightness test tool and a method of use, wherein an oil seal air tightness test tool comprises an installer, and also comprises a telescope fixedly connected to the top of the installer, a push piece fixedly connected to the output end of the telescope, an upper sealing plate arranged outside the push piece, the length of the installation cylinder is less than the length of the lower sleeve, the number and position of the installation cylinder, the lower sleeve, the second spring and the splicing rod correspond one to one, and the splicing rod is squeezed when the push piece moves downward, so that the upper sealing plate, the lower support plate and the splicing rod are fixedly connected. The thrust of the push piece makes the splicing rod combine the upper sealing plate and the lower support plate, so that the upper sealing plate and the lower support plate are synchronously vibrated with the oil seal ring in cooperation with the driving member, so as to ensure the accuracy of the test, and by simulating the vibration condition, the design deficiencies of the oil seal ring are found, which is helpful to optimize the product design, improve the sealing performance of the oil seal ring in a vibration environment, and extend the product life.

Description

Technical Field

[0001] The present invention relates to the technical field of sealing test, and in particular to an oil seal air tightness test tool and a use method thereof. Background Art

[0002] An oil seal ring is a sealing element used in mechanical devices, usually made of rubber or other elastic materials, to prevent leakage of lubricating grease or gas. Oil seal rings are widely used in various mechanical equipment, such as automobiles, motorcycles, industrial machinery, etc. In order to ensure the long-term operation of the oil seal ring and meet safety standards, sealing tests are carried out during production. Through sealing tests, product quality can be ensured and it can be determined whether product quality needs to be improved or optimized.

[0003] However, in the prior art, during actual use, the oil seal ring is usually installed at the inlet and outlet, resulting in a variety of complex stress conditions during use. For example, the bumps during vehicle transportation cause circulation shocks. At the same time, the oil seal ring is affected by continuous vibrations due to the impact of the bumps. Most airtightness test tools can only provide airtightness tests under stable conditions and cannot simulate external influences in actual use. This single airtightness test will lead to inaccurate test results, resulting in misjudgment of the airtightness of the oil seal ring during use, causing safety hazards. In order to solve the complex stress conditions faced by the oil seal ring in actual use, the existing solution is to conduct on-site testing, that is, to conduct testing in the environment where the oil seal ring is actually installed and used. However, the limitation is that it may not be able to fully control the test conditions, and the test results may be affected by environmental factors, with low repeatability. At the same time, the cost is usually high, and the operation is complicated. It is not suitable for all enterprises and projects, resulting in engineers lacking sufficient data support when optimizing the design of the oil seal ring, and may not be able to make targeted improvements, thereby bringing a series of safety risks and product reliability issues.

[0004] To this end, an oil seal air tightness test tool and a use method are proposed, which can improve the accuracy of the oil seal air tightness test. Summary of the invention

[0005] The purpose of the present invention is to provide an oil seal air tightness testing tool and a use method to solve the problem of single detection of existing sealing detectors.

[0006] The cam is an axially-coupled device for activating the compression spring, and the cam is adapted to engage the compression spring of the piston rod and engage the compression spring to engage the compression spring, wherein the cam is adapted to engage the compression spring and the compression spring is adapted to engage the compression spring.

[0007] Furthermore, the pushing member includes a push plate fixedly connected to the output end of the telescope, a lower pressure rod and a first spring connected between the push plate and the upper sealing plate are provided at the bottom end of the pushing member, the lower pressure rod is located inside the upper sealing plate, the number and positions of the lower pressure rod, the first spring and the mounting tube correspond one to one, the splicing rod is located directly below the lower pressure rod, and the elastic coefficient of the second spring is greater than the elastic coefficient of the first spring.

[0008] Furthermore, the splicing rod includes a through-slot rod slidably connected to the bottom end of the mounting tube, a first arc block fixedly connected to one side of the through-slot rod, a second arc block fixedly connected to the other side of the through-slot rod, and a return spring connected between the through-slot rod and the mounting tube, the inner diameter of the through-slot rod is equal to the diameter of the bottom of the lower pressure rod, the through-slot rod is located directly below the lower pressure rod, the through-slot rod is not concentric with the lower pressure rod, and a profile groove is provided on one side of the mounting tube close to the second arc block.

[0009] Furthermore, a strip groove is opened on one side of the lower sleeve, the first arc block is located outside the lower sleeve, the through groove rod passes through the strip groove and is connected to the first arc block, the first arc block is fitted with the outside of the lower sleeve and the fitting surface shape is the same, and the second arc block is fitted with the inside of the lower sleeve and the fitting surface shape is the same.

[0010] Furthermore, a support block and a placement mold are provided at the top end of the lower support plate, and the placement mold is located at the center of the lower support plate. The driving member includes a driving motor fixedly connected to the inside of the installer, and the output end of the driving motor is fixedly connected to a rotating wheel, an upper pressure member slidably connected to the inside of the lower support plate, and an impact member arranged inside the support block.

[0011] Furthermore, a bar is provided on one side of the rotating wheel close to the upper pressure piece, and the upper pressure piece includes an upper pressure rod slidably connected to the inside of the lower support plate, and an upper push block fixedly connected to one side of the upper pressure rod, a sliding groove opening is provided at the bottom end of the upper pressure rod, the bar is located inside the sliding groove opening, the top end of the upper pressure rod is always located inside the lower support plate, and the upper push block is located below the lower support plate.

[0012] Furthermore, the impact member includes a rotating rod with one end rotatably connected to the inside of the support block, an impact wheel rotatably connected to the other end of the rotating rod, and a torsion spring connected between the rotating rod and the support block. The central axis of the impact wheel coincides with the lower support plate, and the impact wheel is located close to the position where the mold is placed.

[0013] Furthermore, arc-shaped pressure plates are provided at the bottom of both sides of the push plate, a sleeve frame is fixedly connected to the bottom of the upper sealing plate, a positioning piece is provided inside the sleeve frame, the positioning piece is fitted with the arc-shaped pressure plate, and two positioning pieces and sleeve frames are provided and are symmetrical about the central axis of the upper sealing plate.

[0014] Furthermore, the positioning member includes a spring rod slidably connected to the inside of the sleeve, a return spring connected between the spring rod and the sleeve, and a positioning wheel fixedly connected to one end of the spring rod, and the other end of the spring rod is in contact with the arc pressure plate.

[0015] Another aspect of the present invention provides: a method for using an oil seal air tightness test tool, comprising the following steps:

[0016] Step 1: According to the size and type of the oil seal ring, select the corresponding placement mold and adjust the extension length of the telescope;

[0017] Step 2: Install the oil seal ring outside the mold, start the telescopic device and use the upper sealing plate to seal the oil seal ring;

[0018] Step 3: Start the tester, gradually increase the pressure or vacuum, and observe the sealing performance of the oil seal ring;

[0019] Step 4: Start the driving component to impact the oil seal ring, and at the same time make the lower support plate drive the oil seal ring to vibrate, and record the data for result analysis and test data.

[0020] Beneficial effects of the present invention:

[0021] The thrust of the pushing piece enables the splicing rod to combine the upper sealing plate and the lower supporting plate, so that the upper sealing plate and the lower supporting plate can vibrate synchronously with the oil sealing ring in cooperation with the driving piece, thereby truly reflecting the vibration environment encountered by the oil sealing ring during actual use, such as the vibration of the engine during operation, the vibration of mechanical equipment, etc., and can more accurately evaluate the sealing performance of the oil sealing ring in a vibration environment. At the same time, the relative positions of the upper sealing plate and the lower supporting plate are firmly fixed, thereby ensuring sufficient sealing of the oil sealing ring and test accuracy. By simulating vibration conditions, the design deficiencies of the oil sealing ring are discovered, which helps to optimize product design, improve the sealing performance of the oil sealing ring in a vibration environment, and extend product life.

[0022] Different oil seal rings can be dealt with by replacing the placement mold. At the same time, when facing different types of oil seal rings, the downward thrust of the telescopic device can be used to automatically combine the upper sealing plate and the lower support plate without manual fixation, reducing human intervention and ensuring that oil seal rings of different sizes are tested under the same standards, ensuring product consistency. At the same time, it can quickly adapt to market demand and test oil seal rings of new sizes. It can adapt to the testing needs of oil seal rings of different sizes and types, and improve the versatility and flexibility of the equipment.

[0023] By controlling the speed of the driving motor and the driving frequency of the upper pressure piece on the lower support plate, the sealing performance of the oil seal ring under different vibration frequencies and amplitudes can be tested more accurately, thereby obtaining test results under different conditions. For small oil seal rings that are susceptible to impact, the driving force of the upper pressure piece moving up and down can be combined with the impact piece to generate an impact on the outside of the oil seal ring. By simulating external impacts, the test equipment can simulate more realistically and understand the sealing performance of the oil seal ring under different impact conditions, thereby optimizing product design and improving the product's impact resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of a three-dimensional structure of the present invention from a first viewing angle;

[0025] Figure 2 It is a structural schematic diagram of the installer of the present invention;

[0026] Figure 3 For the present invention Figure 2 Sectional view at AA in the middle;

[0027] Figure 4 For the present invention Figure 2 Sectional view at the middle BB;

[0028] Figure 5 For the present invention Figure 3 The enlarged schematic diagram of the center C;

[0029] Figure 6 For the present invention Figure 4The enlarged schematic diagram of point D in the middle;

[0030] Figure 7 It is a structural schematic diagram of the lower sleeve of the present invention;

[0031] Figure 8 It is a schematic structural diagram of the positioning member of the present invention.

[0032] In the figure:

[0033] 1. Installer; 101. Tester; 2. Telescopic device; 3. Pushing member; 31. Pushing plate; 311. Arc-shaped pressing plate; 32. Lower pressing rod; 33. First spring; 4. Upper sealing plate; 401. Sleeve frame; 41. Mounting cylinder; 411. Profile groove; 5. Lower support plate; 501. Support block; 502. Placement mold; 51. Lower sleeve; 511. Strip notch; 52. Second spring; 6. Driving member; 61. Driving motor Machine; 62, rotating wheel; 621, bar; 63, upper pressure piece; 631, upper pressure rod; 6311, slide slot; 632, upper push block; 64, impact piece; 641, rotating rod; 642, impact wheel; 643, torsion spring; 7, splicing rod; 71, through-slot rod; 72, first arc block; 73, second arc block; 74, return spring; 8, positioning piece; 81, spring rod; 82, return spring; 83, positioning wheel. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0035] Example 1, reference Figure 1-Figure 8 , which is the first embodiment of the present invention, provides an oil seal air tightness test tool, including an installer 1, and also includes a telescopic device 2 fixedly connected to the top of the installer 1, a push piece 3 fixedly connected to the output end of the telescopic device 2, an upper sealing plate 4 arranged outside the push piece 3, a lower support plate 5 slidably connected below the upper sealing plate 4, a driving member 6 arranged inside the installer 1, and a plurality of splicing rods 7 arranged and located below the upper sealing plate 4. A tester 101 is arranged on the top of the installer 1, a plurality of installation tubes 41 are arranged at the bottom of the upper sealing plate 4, and a lower support plate 5 is arranged at the bottom. There are multiple lower sleeves 51, and a second spring 52 is connected between the lower sleeve 51 and the installer 1. The splicing rod 7 is slidably connected to the bottom end of the installation cylinder 41, and the two ends of the splicing rod 7 are in contact with the lower sleeve 51. The installation cylinder 41 is located inside the lower sleeve 51. The length of the installation cylinder 41 is smaller than the length of the lower sleeve 51. The number and position of the installation cylinder 41, the lower sleeve 51, the second spring 52 and the splicing rod 7 correspond one to one. The lower support plate 5 moves back and forth through the driving member 6, and the pushing member 3 squeezes the splicing rod 7 when it moves downward, so that the upper sealing plate 4, the lower support plate 5 and the splicing rod 7 are fixedly connected.

[0036] Reference Figure 1-Figure 3 The push piece 3 includes a push plate 31 fixedly connected to the output end of the telescopic device 2, a lower pressure rod 32 and a first spring 33 connecting the push plate 31 and the upper sealing plate 4 are arranged at the bottom end of the push piece 3, the lower pressure rod 32 is located inside the upper sealing plate 4, and the number and positions of the lower pressure rod 32, the first spring 33 and the mounting tube 41 correspond one to one. The splicing rod 7 is located directly below the lower pressure rod 32, so that the upper sealing plate 4 and the lower support plate 5 are connected at multiple positions at the same time, and when the upper sealing plate 4 contacts the oil sealing ring, the upper sealing plate 4 is blocked by the oil sealing ring and cannot move. Since the elastic coefficient of the second spring 52 is greater than the elastic coefficient of the first spring 33, the push plate 31 will first press the first spring 33, and the second spring 52 will not be compressed, and the distance by which the first spring 33 is compressed is the distance by which the lower pressure rod 32 descends, and this distance is always fixed. Since the upper sealing plate 4 cannot move, the splicing rod 7 cannot move either, and the lower pressure rod 32 will squeeze the splicing rod 7.

[0037] It can be understood that the extension length of the telescopic device 2 is adjusted according to the size and type of the oil sealing ring so that the upper sealing plate 4 contacts the oil sealing ring. The present device needs to set an additional distance for the extension length of the telescopic device 2. This distance is to ensure that the lower pressure rod 32 squeezes the split rod 7 so that the split rod 7 slides outside the lower pressure rod 32, and the length of this distance remains consistent. Therefore, the extension length of the telescopic device 2 is adjusted each time according to the size and type of the oil sealing ring, and this additional distance can be set.

[0038] Reference Figure 1-Figure 6The splicing rod 7 includes a through-slot rod 71 slidably connected to the bottom end of the mounting tube 41, a first arc block 72 fixedly connected to one side of the through-slot rod 71, a second arc block 73 fixedly connected to the other side of the through-slot rod 71, and a return spring 74 connected between the through-slot rod 71 and the mounting tube 41. Since the inner diameter of the through-slot rod 71 is equal to the diameter of the bottom of the lower pressure rod 32, and the through-slot rod 71 is located directly below the lower pressure rod 32, a profile groove 411 is provided on one side of the mounting tube 41 close to the second arc block 73, so that the second arc block 73 can pass through the mounting tube 41 and contact the inside of the lower sleeve 51, which makes the lower pressure rod 32 contact with the through-slot rod 71 when it moves downward, but the through-slot rod 71 is not in contact with the lower pressure rod 32. 2 is not concentric, resulting in the lower pressure rod 32 entering the interior of the through-slot rod 71 again, the lower pressure rod 32 will squeeze the interior of the through-slot rod 71, causing the through-slot rod 71 to move a shorter distance, so that the multiple through-slot rods 71 ​​drive the corresponding first arc block 72 and second arc block 73 to move synchronously, thereby blocking the lower sleeve 51, so that the lower sleeve 51 and the split rod 7 are combined, and the split rod 7 is connected to the installation cylinder 41, so as to automatically fix the relative positions of the upper sealing plate 4 and the lower support plate 5, thereby ensuring the sealing performance of the oil seal ring at this time, ensuring the effectiveness of the detection, and then being able to discover potential problems of the oil seal ring in a vibration environment, so as to optimize it in the product design stage and reduce the maintenance cost of the product during use.

[0039] The cam 71 is provided with a plurality of cams 72, 73 and 74, which are provided with a plurality of cams 74, 75 and 76 ...

[0040] Reference Figure 2-Figure 7A strip groove 511 is provided on one side of the lower sleeve 51, and the first arc block 72 is located outside the lower sleeve 51. The through-slot rod 71 passes through the strip groove 511 and is connected to the first arc block 72, so that the through-slot rod 71 can slide up and down inside the strip groove 511, and the first arc block 72 fits with the outside of the lower sleeve 51 and the fitting surface has the same shape, and the second arc block 73 fits with the inside of the lower sleeve 51 and the fitting surface has the same shape, so that the splicing rod 7 can be spliced ​​with the inner and outer parts of the lower sleeve 51 to ensure sufficient stability.

[0041] Reference Figure 2-Figure 6 A support block 501 and a placement mold 502 are provided at the top of the lower support plate 5. The placement mold 502 is located at the center of the lower support plate 5. The driving member 6 includes a driving motor 61 fixedly connected to the inside of the installer 1, a rotating wheel 62 is fixedly connected to the output end of the driving motor 61, an upper pressing member 63 slidably connected to the inside of the lower support plate 5, and an impact member 64 arranged inside the support block 501.

[0042] Specifically, the driving motor 61 is a driving device, which is used to drive the rotating wheel 62 to rotate, so that the rotating wheel 62 drives the upper pressure piece 63 to move up and down. The upper pressure piece 63 drives the lower support plate 5 when moving up and down, so that the lower support plate 5 moves upward to stretch the second spring 52. At the same time, the upper pressure piece 63 will also squeeze the impact piece 64, and the impact piece 64 is used to impact the outside of the oil seal ring. The placement mold 502 is adjusted according to the model of the oil seal ring, and the support block 501 supports the impact piece 64.

[0043] Reference Figure 2-Figure 6 A bar 621 is provided on one side of the rotating wheel 62 close to the upper pressure piece 63. The upper pressure piece 63 includes an upper pressure rod 631 slidably connected to the inside of the lower support plate 5, and an upper push block 632 fixedly connected to one side of the upper pressure rod 631. A sliding groove 6311 is provided at the bottom end of the upper pressure rod 631. The bar 621 is located inside the sliding groove 6311. The top end of the upper pressure rod 631 is always located inside the lower support plate 5, and the upper push block 632 is located below the lower support plate 5.

[0044] Specifically, the bar 621 is located at the outer diameter position of the rotating wheel 62, so that the position of the bar 621 will continue to change when the rotating wheel 62 rotates, and the bar 621 is located inside the sliding groove mouth 6311, so that the bar 621 squeezes the sliding groove mouth 6311, and the upper pressure piece 63 is slidably connected in the through groove opened in the lower support plate 5, and then restricted by the lower support plate 5, so that the upper pressure piece 63 moves back and forth up and down, then the upper push block 632 located under the lower support plate 5 will squeeze the lower support plate 5, so that the lower support plate 5 moves upward synchronously.

[0045] Reference Figure 1-Figure 8The impact member 64 includes a rotating rod 641 with one end rotatably connected to the inside of the support block 501, an impact wheel 642 rotatably connected to the other end of the rotating rod 641, and a torsion spring 643 connected between the rotating rod 641 and the support block 501. The central axis of the impact wheel 642 coincides with the lower support plate 5, and the impact wheel 642 is located close to the position where the mold 502 is placed.

[0046] Among them, the oil seal ring is located at the inlet and outlet in actual application, and will be impacted at different positions. For example, during vehicle transportation, due to the unevenness of the road, the oil seal ring will also be subjected to the impact of fluid dynamic force.

[0047] Specifically, when placing the oil seal ring, since the impact wheel 642 restricts the oil seal ring, it is necessary to swing the rotating rod 641 first to make the rotating rod 641 rotate upward. After the oil seal ring is placed, the rotating rod 641 is affected by the torsion spring 643 and moves back, and the impact wheel 642 will contact the oil seal ring. In addition, two limit strips are provided on one side of the support block 501 to limit the rotation angle of the rotating rod 641 to avoid the impact wheel 642 from colliding with the upper sealing plate 4 and at the same time limit the distance between the two rotating rods 641 and the upper pressure rod 631. The distance between the rotating rod 641 and the upper pressure rod 631 is always smaller than the distance between the upper push block 632 and the lower support plate 5. This makes the upper pressure rod 631 contact the rotating rod 641 first, and then the upper push block 632 will contact the lower support plate 5. Then, when the upper pressure rod 631 squeezes the rotating rod 641 to make the rotating rod 641 rotate, the impact wheel 642 no longer contacts the oil seal ring, but when the upper pressure rod 631 moves back, the impact wheel 64 2 will move back accordingly, and the impact wheel 642 will impact the oil seal ring, and the rotation distance of the rotating rod 641 is the size range of the oil seal ring. The size of the oil seal ring cannot exceed the rotation range of the rotating rod 641, that is, when the rotating rod 641 rotates to the highest point, it cannot contact the oil seal ring. It is necessary to ensure that the rotating rod 641 has a certain rotation distance to impact the oil seal ring. The oil seal rings that need to be impacted are mostly vehicle mechanical equipment with small sizes. The rotating rod 641 can handle such oil seal rings. For some larger oil seal rings that do not need impact testing, the rotating rod 641 can be directly removed to handle more sizes of oil seal rings. In addition, since the vibration environment has a great influence on the sealing performance of the oil seal ring, the speed of the drive motor 61 is controlled by the existing PLC control device, so that the sealing performance of the oil seal ring under different vibration frequencies and amplitudes can be more accurately tested, thereby obtaining test results under different conditions.

[0048] Reference Figure 1-Figure 8 The bottom of both sides of the push plate 31 is provided with an arc-shaped pressure plate 311, and the bottom of the upper sealing plate 4 is fixedly connected with a sleeve 401. A positioning member 8 is provided inside the sleeve 401, and the positioning member 8 is in contact with the arc-shaped pressure plate 311. There are two positioning members 8 and two sleeves 401, which are symmetrical about the central axis of the upper sealing plate 4.

[0049] Reference Figure 1-Figure 8 The positioning member 8 includes a spring rod 81 slidably connected to the inside of the sleeve 401, a return spring 82 connected between the spring rod 81 and the sleeve 401, and a positioning wheel 83 fixedly connected to one end of the spring rod 81. The other end of the spring rod 81 is in contact with the arc-shaped pressure plate 311, and the spring of the spring rod 81 is located inside it.

[0050] When the push plate 31 is in the locked state, the spring rod 81 is pressed downwardly to prevent the spring rod 81 from sliding out of the locked state, and the two spring rods 81 are pressed downwardly to prevent the spring rod 81 from sliding out of the locked state.

[0051] The working principle of the present invention is as follows: the rotating rod 641 is toggled to place the oil sealing ring outside the mold 502, and the telescopic device 2 is started to extend the telescopic device 2, and the telescopic device 2 pushes the push plate 31 to move downward synchronously, and the push plate 31, the lower pressure rod 32 and the first spring 33 move downward synchronously, and at the same time, the upper sealing plate 4 connected to the first spring 33 moves downward synchronously, and the installation tube 41 and the splicing rod 7 as a whole will also move downward synchronously with the upper sealing plate 4, and the splicing rod 7 will slide inside the strip groove 511, and at the same time, the sleeve 401 will drive the positioning member 8 to move downward as a whole, and when the bottom of the upper sealing plate 4 contacts the oil sealing ring, the bottom of the upper sealing plate 4 will be blocked and stop moving, and at this time, the telescopic device 2 drives the push plate 31 to descend, and because the upper sealing plate 4 is blocked The first and second arc blocks 72 and 73 are moved synchronously when the first arc block 72 is pressed against the outer side of the lower sleeve 51, and the second arc block 73 is pressed against the inner side of the lower sleeve 51, so that the lower sleeve 51 and the spliced ​​rod 7 are fixed as a whole. Since the through-slot rod 71 is connected to the mounting tube 41, the lower sleeve 51 and the mounting tube 41 are fixed, thereby combining the lower support plate 5 and the upper sealing plate 4. At the same time, when the push plate 31 moves downward, since the positioning member 8 is connected to the upper sealing plate 4 as a whole, the arc-shaped pressure plates 311 on both sides of the push plate 31 will squeeze the spring rod 81, so that the spring rod 81 compresses the return spring 82. At the same time, the spring rod 81 will drive the positioning wheel 83 to move toward the position of the oil seal ring, and the positioning wheel 83 will fit with the outside of the oil seal ring. If the diameter of the oil seal ring is large, the positioning wheel 83 will be blocked by it, and the positioning wheel 83 will shrink. The oil seal ring is further stabilized by the two positioning wheels 83. At this time, the distance between the upper sealing plate 4 and the lower support plate 5 is also fixed. , so that both sides of the oil seal ring are sealed, and at this time, the inside of the oil seal ring can be injected with air through the tester 101, and tested, and the drive motor 61 is started so that the drive motor 61 drives the rotating wheel 62 to rotate. When the rotating wheel 62 rotates, the bar 621 slides and squeezes inside the sliding groove 6311, so that the upper pressure rod 631 moves up and down reciprocatingly, and the upper pressure rod 631 will drive the upper push block 632 to move. The top of the upper pressure rod 631 will first squeeze the rotating rod 641, so that the rotating rod 641 rotates with the support block 501 as the fulcrum, and the rotating rod 641 will drive the impact wheel 642 to rotate. The impact wheel 642 does not contact the oil seal ring at this time. At the same time, when the rotating rod 641 rotates, it will rotate and compress the torsion spring 643.Then, when the upper push block 632 moves upward, it impacts the bottom of the lower support plate 5, so that the lower support plate 5 moves upward, and the lower support plate 5 is fixedly connected to the upper sealing plate 4 as a whole through the splicing rod 7, so that the three move upward synchronously. At the same time, when the lower support plate 5 moves upward, the lower sleeve 51 at the bottom moves upward accordingly, and the second spring 52 is stretched at the same time, and the first spring 33 is compressed when the upper sealing plate 4 moves upward. Since the upper pressure rod 631 moves up and down reciprocatingly, when the upper pressure rod 631 moves downward, the rotating rod 641 is affected by the rotation of the torsion spring 643 and rotates, and the impact wheel 64 2 will hit the outside of the oil seal ring, and at the same time, the upper push block 632 moves down and no longer supports the bottom end of the lower support plate 5. At this time, the lower support plate 5, the upper sealing plate 4 and the split rod 7 as a whole will be affected by the first spring 33 and the second spring 52 and move back quickly. The above process is repeated continuously to perform more complex airtightness testing. After completion, the push plate 31 is pulled up by the telescopic device 2 to separate the lower pressure rod 32 from the through-slot rod 71, and then the upper sealing plate 4 and the lower support plate 5 are separated, and then the upper sealing plate 4 is pulled back by the push plate 31.

[0052] Example 2, reference Figure 1-Figure 8 , which is a second embodiment of the present invention, provides: a method for using an oil seal air tightness test tool, comprising the following steps:

[0053] Step 1: According to the size and type of the oil seal ring, select the corresponding placement mold 502, adjust the extension length of the retractor 2, and set the corresponding test pressure according to the design pressure of the oil seal ring to simulate the actual working pressure.

[0054] Step 2: Install the oil seal ring outside the mold 502 and ensure that the installation position is correct. Start the telescopic device 2 and use the upper sealing plate 4 to seal the oil seal ring.

[0055] Step 3: Start the tester 101, gradually increase the pressure or vacuum degree, and observe the sealing performance of the oil seal ring.

[0056] Step 4: Start the driving member 6 to impact the oil seal ring, and at the same time make the lower support plate 5 drive the oil seal ring to vibrate, and record the data for result analysis test data to determine whether it meets the design requirements. According to the test results, the oil seal ring is improved or optimized to improve its sealing performance. The sealing performance of the oil seal ring can be comprehensively evaluated to ensure its reliability and safety in practical applications.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An oil seal air tightness test tool, comprising an installer (1), characterized in that: The device also comprises a telescopic device (2) fixedly connected to the top of the installer (1), a pushing member (3) fixedly connected to the output end of the telescopic device (2), an upper sealing plate (4) arranged outside the pushing member (3), a lower supporting plate (5) slidably connected below the upper sealing plate (4), a driving member (6) arranged inside the installer (1), and a plurality of splicing rods (7) arranged below the upper sealing plate (4); a tester (101) is arranged at the top of the installer (1); a plurality of mounting cylinders (41) are arranged at the bottom of the upper sealing plate (4); a plurality of lower sleeves (51) are arranged at the bottom of the lower supporting plate (5); and the lower sleeves (51) and the installer (1) are connected to each other. A second spring (52) is connected between the two ends of the splicing rod (7), the splicing rod (7) is slidably connected to the bottom end of the mounting tube (41), the two ends of the splicing rod (7) are in contact with the lower sleeve (51), the mounting tube (41) is located inside the lower sleeve (51), the length of the mounting tube (41) is smaller than the length of the lower sleeve (51), the number and position of the mounting tube (41), the lower sleeve (51), the second spring (52) and the splicing rod (7) correspond one to one, the lower support plate (5) is reciprocated by the driving member (6), and the pushing member (3) presses the splicing rod (7) when it moves downward, so that the upper sealing plate (4), the lower support plate (5) and the splicing rod (7) are fixedly connected.

2. The oil seal air tightness test tool according to claim 1, characterized in that: The push member (3) comprises a push plate (31) fixedly connected to the output end of the telescopic device (2); a lower pressure rod (32) and a first spring (33) connected between the push plate (31) and the upper sealing plate (4) are arranged at the bottom end of the push member (3); the lower pressure rod (32) is located inside the upper sealing plate (4); the number and position of the lower pressure rod (32), the first spring (33) and the mounting tube (41) correspond one to one; the splicing rod (7) is located directly below the lower pressure rod (32); and the elastic coefficient of the second spring (52) is greater than the elastic coefficient of the first spring (33).

3. The oil seal air tightness test tool according to claim 2, characterized in that: The splicing rod (7) comprises a through-slot rod (71) slidably connected to the bottom end of the mounting tube (41), a first arc block (72) fixedly connected to one side of the through-slot rod (71), a second arc block (73) fixedly connected to the other side of the through-slot rod (71), and a return spring (74) connected between the through-slot rod (71) and the mounting tube (41), the inner diameter of the through-slot rod (71) being equal to the diameter of the bottom of the pressing rod (32), the through-slot rod (71) being located directly below the pressing rod (32), the through-slot rod (71) being not concentric with the pressing rod (32), and a profile groove (411) being provided on one side of the mounting tube (41) close to the second arc block (73).

4. The oil seal air tightness test tool according to claim 3, characterized in that: A strip-shaped slot (511) is provided on one side of the lower sleeve (51); the first arc block (72) is located outside the lower sleeve (51); the through-slot rod (71) passes through the strip-shaped slot (511) and is connected to the first arc block (72); the first arc block (72) fits with the outside of the lower sleeve (51) and the fitting surfaces have the same shape; the second arc block (73) fits with the inside of the lower sleeve (51) and the fitting surfaces have the same shape.

5. The oil seal air tightness test tool according to claim 2, characterized in that: A support block (501) and a placement mold (502) are provided at the top end of the lower support plate (5); the placement mold (502) is located at the center of the lower support plate (5); the driving member (6) comprises a driving motor (61) fixedly connected to the inside of the installer (1); the output end of the driving motor (61) is fixedly connected to a rotating wheel (62); an upper pressing member (63) slidably connected to the inside of the lower support plate (5); and an impact member (64) provided inside the support block (501).

6. The oil seal air tightness test tool according to claim 5, characterized in that: A bar (621) is provided on one side of the rotating wheel (62) close to the upper pressure piece (63); the upper pressure piece (63) comprises an upper pressure rod (631) slidably connected to the inside of the lower support plate (5), and an upper push block (632) fixedly connected to one side of the upper pressure rod (631); a sliding groove opening (6311) is provided at the bottom end of the upper pressure rod (631); the bar (621) is located inside the sliding groove opening (6311); the top end of the upper pressure rod (631) is always located inside the lower support plate (5); and the upper push block (632) is located below the lower support plate (5).

7. The oil seal air tightness test tool according to claim 6, characterized in that: The impact member (64) comprises a rotating rod (641) having one end rotatably connected to the inside of the support block (501), an impact wheel (642) rotatably connected to the other end of the rotating rod (641), and a torsion spring (643) connected between the rotating rod (641) and the support block (501), wherein the central axis of the impact wheel (642) and the lower support plate (5) coincide with each other, and the impact wheel (642) is located close to a position where the mold (502) is placed.

8. The oil seal air tightness test tool according to claim 5, characterized in that: The bottoms of both sides of the push plate (31) are provided with arc-shaped pressing plates (311), the bottom of the upper sealing plate (4) is fixedly connected with a sleeve frame (401), a positioning member (8) is provided inside the sleeve frame (401), the positioning member (8) is fitted with the arc-shaped pressing plate (311), and two positioning members (8) and the sleeve frame (401) are provided and are symmetrical about the central axis of the upper sealing plate (4).

9. The oil seal air tightness test tool according to claim 8, characterized in that: The positioning member (8) comprises a spring rod (81) slidably connected to the inside of the sleeve frame (401), a return spring (82) connected between the spring rod (81) and the sleeve frame (401), and a positioning wheel (83) fixedly connected to one end of the spring rod (81); the other end of the spring rod (81) is in contact with the arc-shaped pressure plate (311).

10. A method for using an oil seal air tightness test tool, using the oil seal air tightness test tool according to claim 5, characterized in that: The following steps are involved: Step 1: Select a corresponding placement mold (502) according to the size and type of the oil seal ring, and adjust the extension length of the telescopic device (2); Step 2: Install the oil seal ring outside the placement mold (502), start the telescopic device (2) and use the upper sealing plate (4) to seal the oil seal ring; Step 3: Start the tester (101), gradually increase the pressure or vacuum, and observe the sealing performance of the oil seal ring; Step 4: Start the driving member (6) to impact the oil seal ring, and at the same time make the lower support plate (5) drive the oil seal ring to vibrate, and record the data for result analysis and test data.

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