Air tightness detection device for brake oil cylinder

Abstract

The invention relates to the technical field of air tightness detection, in particular to a brake oil cylinder air tightness detection device which comprises a detection platform, a supporting column, an analysis host and a test assembly. The testing assembly comprises a transposition frame, a top circular truncated cone, a rotating hole sleeve, a gear driving mechanism, a shelving component and an operation component; the rotating hole sleeve is rotatably mounted on the top circular truncated cone; the gear driving mechanism is connected with the detection platform; the placement component is connected with the transposition frame; the operation component is connected with the rotating hole sleeve; the air tightness of the oil cylinder can be quickly judged by means of automatic analysis and detection through arranged components, so that the actual detection time required for detecting a plurality of oil cylinders is greatly shortened, and the air tightness detection efficiency of the oil cylinders in the actual process is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of airtightness testing technology, and in particular to a device for testing the airtightness of a brake cylinder. Background Technology

[0002] Brake cylinder air tightness testing is a core component in ensuring the safe operation of vehicle braking systems. Its significance and importance are reflected in multiple aspects, directly affecting vehicle performance, personnel safety, and corporate profits. When cylinder leakage occurs, it will lead to insufficient brake fluid pressure, delayed braking response, or even complete failure. Consequently, the cylinder may not be able to build up sufficient pressure during emergency braking due to leakage, and the vehicle may not be able to stop in time, causing rear-end collisions or other accidents. Therefore, cylinder air tightness testing is a key step in ensuring the safety and reliability of vehicle braking systems. The existing patent with publication number CN216899483U discloses a brake cylinder air tightness testing device, which includes a base, a gasket mounting plate, an inflation connector, a cylindrical sealing cover, a U-shaped leakage indicator tube, and a push cylinder. The gasket mounting plate has an annular gasket mounting groove, and an annular gasket is placed in the annular gasket mounting groove. The gasket mounting plate is fixedly mounted on the base, and the inflation connector is mounted on the gasket mounting plate and located inside the annular gasket. The advantages are: fast detection speed and high sensitivity. When using existing testing equipment to test cylinders, operators need to fill the cylinder with liquid after the corresponding connectors are installed, and then judge whether there is a leak by the combination of gas and liquid. This requires operators to wait and record for a long time before finally identifying the cylinder to be tested. Moreover, after the assessment, follow-up operations such as draining the liquid are required, making the cylinder airtightness test cycle long and resulting in low efficiency in actual cylinder airtightness testing. Summary of the Invention

[0003] The purpose of this invention is to provide a brake cylinder air tightness testing device, which can quickly determine the air tightness of the cylinder through automatic analysis and testing using a set component. At the same time, it can complete the loading and unloading of subsequent cylinders to be tested by utilizing the observation and judgment time required for cylinder testing, thereby greatly reducing the actual testing time required when testing multiple cylinders and thus greatly improving the efficiency of cylinder air tightness testing in actual processes.

[0004] To achieve the above objectives, the present invention provides a brake cylinder air tightness testing device, comprising a testing platform, a support column, and an analysis host, wherein the support column is fixedly mounted on the testing platform, the analysis host is mounted on the testing platform, and the device also includes a testing component; The test assembly includes a rotation frame, a top frustum, a rotating sleeve, a gear drive mechanism, a support component, and a working component; The indexing frame is rotatably mounted on the support column, the top truncated cone is fixedly mounted on the support column, the rotating hole sleeve is rotatably mounted on the top truncated cone and fixedly connected to the indexing frame, the gear drive mechanism is connected to the detection platform and is used to drive the indexing frame, the placement component is connected to the indexing frame and is used to place the cylinder to be tested, and the working component is connected to the rotating hole sleeve and is used to perform airtightness testing on the corresponding cylinder.

[0005] The placement component includes a workstation frame, a placement platform, and a switching motor. Four workstation frames are fixedly installed on the outside of the rotating frame. A placement platform is rotatably installed on each workstation frame. The switching motor is installed on each workstation frame, and the output shaft of the switching motor is connected to the placement platform installed on the corresponding workstation frame.

[0006] The working components include a probe cylinder, a mounting pipe, a connecting frame, a pressure regulating component, a judgment component, and a connecting component. A probe cylinder is fixedly installed on the side of each workstation frame. A mounting pipe is installed on each probe cylinder for assembling with the connector of the cylinder to be tested. A connecting frame is installed on the top of each probe cylinder, and the connecting frame is fixedly installed on one side of the rotating hole sleeve. The pressure regulating component is connected to the top frustum and is used to adjust the air pressure inside the cylinder to be tested. The judgment component is connected to the workstation frame and is used to analyze and judge the airtightness of the cylinder to be tested. The connecting component is connected to the connecting frame and is used to control the connectivity of the connecting frame.

[0007] The pressure regulating component includes an outlet frame, a constant pressure tank, a constant pressure detector, and a pressure regulating air pump. The outlet frame is fixedly installed inside the top circular platform. The constant pressure tank is connected to the outlet frame and fixedly installed on the top circular platform. The constant pressure detector is installed on the constant pressure tank for monitoring the air pressure inside the constant pressure tank. The pressure regulating air pump is electrically connected to the constant pressure detector and connected to the constant pressure tank, and is fixedly installed on the top circular platform.

[0008] The judgment component includes a pressure sensor, a recording output device 502, and a scanning receiver. Each of the probe cylinders is equipped with a pressure sensor, which is connected to the probe cylinder and fixedly installed on one side of the workstation frame. Four recording output devices are respectively installed on four workstation frames, and the recording output devices are electrically connected to the pressure sensors installed on the same workstation frame. The scanning receiver is installed on the support column and electrically connected to the analysis host.

[0009] The guiding component includes a sliding guide, a movable plug, and an ejector spring. The sliding guide is fixedly installed inside the connecting frame. The movable plug is slidably installed on the sliding guide. The two sides of the ejector spring are respectively connected to the movable plug and the sliding guide.

[0010] The judgment component further includes a sliding guide, a mounting bracket, and a label generating device. The sliding guide is fixedly installed on the detection platform; the mounting bracket is slidably installed on the sliding guide; and the label generating device is installed on the mounting bracket and electrically connected to the analysis host.

[0011] The guiding component further includes an ejector cylinder, an ejector plug rod, a pressure control pump, an ejector frame, and an ejector screw drive mechanism. The ejector cylinder is fixedly installed inside the exhaust frame. The ejector plug rod is slidably connected to the ejector cylinder and to the exhaust frame. The pressure control pump is connected to the ejector cylinder and fixedly installed on the top circular platform. The ejector frame is slidably installed inside the top circular platform. The ejector screw drive mechanism is connected to the ejector frame and is used to drive the ejector frame.

[0012] The testing assembly further includes a double-ended screw, an interface baffle, a side baffle, an adjusting motor, and a locking component. Each of the workstations has a double-ended screw rotatably mounted on it. The interface baffle is threaded to one side of the double-ended screw and slidably mounted on the workstation. The side baffle is threaded to the other side of the double-ended screw and slidably mounted on the workstation. The output shaft of the adjusting motor is connected to the double-ended screw, and the adjusting motor is fixedly mounted on the workstation. The locking component is connected to the workstation and is used to limit the movement of the hydraulic cylinder to be tested placed on the workstation.

[0013] The positioning component includes a clamping plate and a bidirectional screw drive mechanism. Two clamping plates are slidably installed on each workstation frame. Each workstation frame is provided with the bidirectional screw drive mechanism, which is connected to the two clamping plates on the corresponding workstation frame and is used to drive the two clamping plates.

[0014] This invention discloses a brake cylinder air tightness testing device. In actual operation, the user first places the cylinder to be tested using the support member, and then performs air tightness testing in cooperation with the working member. During inspection, the gear drive mechanism drives the indexing frame to rotate, thereby completing the conversion of multiple processes. This allows for more efficient use of the time consumed in cylinder testing, enabling rapid judgment of cylinder air tightness through automatic analysis and testing using the provided components. Simultaneously, the observation and judgment time required for cylinder testing is used to complete the loading and unloading of subsequent cylinders to be tested, significantly reducing the actual testing time required for testing multiple cylinders and greatly improving the efficiency of cylinder air tightness testing in actual processes. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0016] Figure 1 This is a schematic diagram of the overall structure of the brake cylinder airtightness testing device of the present invention.

[0017] Figure 2 This is the invention Figure 1 Enlarged view of point A.

[0018] Figure 3 This is a schematic diagram of the installation structure of the gear drive mechanism of the present invention.

[0019] Figure 4 This is a schematic diagram of the structure of the top frustum of the present invention cut open.

[0020] Figure 5 This is the invention Figure 4 Enlarged view of point B.

[0021] Figure 6 This is a schematic diagram of the installation structure of the air outlet frame of the present invention.

[0022] Figure 7 This is a cross-sectional structural diagram of the air outlet frame of the present invention.

[0023] Figure 8 This is the invention Figure 7 Enlarged view of point C.

[0024] Figure 9 This is a cross-sectional structural diagram of the splice frame of the present invention.

[0025] Figure 10 This is the invention Figure 9 Enlarged view of point D.

[0026] Figure 11 This is a cross-sectional structural diagram of the placement platform of the present invention.

[0027] In the diagram: 101-Detection platform, 102-Support column, 103-Analysis host, 104-Inverter frame, 105-Top frustum, 106-Rotating sleeve, 107-Gear drive mechanism, 201-Station frame, 202-Placement platform, 203-Motor replacement, 301-Detector cylinder, 302-Installation pipe, 303-Connection frame, 401-Air outlet frame, 402-Constant pressure tank, 403-Constant pressure detector, 404-Pressure regulating pump, 501-Observation pressure sensor, 502-Sensing recording output Equipment, 503-Scanning receiving equipment, 504-Side sliding guide, 505-Mounting bracket, 506-Label generating equipment, 601-Sliding guide, 602-Moving plug, 603-Ejection spring, 604-Ejection cylinder, 605-Ejection plug rod, 606-Pressure control pump, 607-Ejection frame, 608-Ejection screw drive mechanism, 701-Double-ended screw, 702-Interface baffle, 703-Side baffle, 704-Adjusting motor, 705-Clamping plate, 706-Bidirectional screw drive mechanism. Detailed Implementation

[0028] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0029] In the description of this invention, it should be understood that "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] Please see Figures 1 to 11This invention provides a brake cylinder air tightness testing device, comprising a testing platform 101, a support column 102, an analysis host 103, and testing components. The testing components include a rotation frame 104, a top frustum 105, a rotating sleeve 106, a gear drive mechanism 107, a support component, and a working component. The support component includes a workstation frame 201, a placement platform 202, and a switching motor 203. The working component includes a probe cylinder 301, a mounting pipe 302, a connecting frame 303, a pressure regulating component, a judgment component, and a connecting component. The pressure regulating component includes an air outlet frame 401, a constant pressure tank 402, a constant pressure probe 403, and a pressure regulating air pump 404. The judgment component includes an observation pressure sensor 501, a sensing recording output device 502, and a scanning receiving device 503. The connecting component includes a sliding guide 601 and a movable... The system includes a plug block 602 and an ejector spring 603. The judgment component also includes a side sliding guide 504, a mounting bracket 505, and a label generating device 506. The guiding component also includes an ejector cylinder 604, an ejector plug rod 605, a pressure control pump 606, an ejector frame 607, and an ejector screw drive mechanism 608. The aforementioned solution solves the problem that when using existing detection devices to test cylinders, operators need to fill the cylinder with liquid after the corresponding connector is installed, and then judge whether the cylinder is leaking by combining gas and liquid. This requires operators to wait and record for a long time before finally judging the cylinder to be tested. Moreover, after the judgment is completed, follow-up operations such as liquid discharge are required, which makes the cylinder airtightness test cycle long and results in low efficiency in the actual cylinder airtightness test process.

[0031] Furthermore, the support column 102 is fixedly installed on the detection platform 101, the analysis host 103 is installed on the detection platform 101, the indexing frame 104 is rotatably installed on the support column 102, the top frustum 105 is fixedly installed on the support column 102, the rotating hole sleeve 106 is rotatably installed on the top frustum 105 and fixedly connected to the indexing frame 104, the gear drive mechanism 107 is connected to the detection platform 101 and is used to drive the indexing frame 104, the placement component is connected to the indexing frame 104 and is used to place the cylinder to be tested, and the working component is connected to the rotating hole sleeve 106 and is used to complete the airtightness test of the corresponding cylinder.

[0032] Specifically, the detection platform 101 is equipped with a corresponding support column 102, and a top frustum 105 is fixed to the top of the support column 102. The indexing frame 104 is rotatably mounted on the support column 102, and the rotating hole sleeve 106 is fitted onto the top frustum 105. The rotating hole sleeve 106 is connected to the indexing frame 104 through a connecting support at the bottom. The indexing frame 104 is provided with a total of four support plates, which correspond to the four placement areas formed by the supporting components and also correspond to the four operation procedures.

[0033] The detection platform 101 is also equipped with a corresponding analysis host 103. The analysis host 103 is equipped with a corresponding judgment and analysis module. By combining the collected detection data with the program built into the module, the airtightness of the cylinder can be analyzed and judged accordingly.

[0034] The indexing frame 104 is driven by the gear drive mechanism 107, which consists of a corresponding sleeve gear, a drive gear, and a motor. The motor drives the drive gear to rotate, and then the drive gear drives the sleeve gear and the indexing frame 104 to rotate, so as to complete the rotation drive of the indexing frame 104.

[0035] In actual operation, the user can first place the cylinder to be tested through the support component, and then perform air tightness testing in cooperation with the working component. During the inspection, the gear drive mechanism 107 can drive the indexing frame 104 to rotate, thereby completing the conversion of multiple processes. This allows for more reasonable use of the time consumed in cylinder testing, enabling the cylinder's air tightness to be quickly judged by automatic analysis and testing through the provided components. At the same time, the observation and judgment time required for cylinder testing can be used to complete the loading and unloading of subsequent cylinders to be tested, which greatly reduces the actual testing time required when testing multiple cylinders, thereby greatly improving the efficiency of cylinder air tightness testing in actual processes.

[0036] Furthermore, the four workstation frames 201 are fixedly installed on the outside of the rotating frame 104; each workstation frame 201 is rotatably mounted with a placement platform 202; each workstation frame 201 is equipped with a switching motor 203, and the output shaft of the switching motor 203 is connected to the placement platform 202 installed on the corresponding workstation frame 201.

[0037] In this embodiment, during use, the four workstation frames 201 are respectively connected to the four protruding bosses of the rotation frame 104. Each workstation frame 201 is provided with a placement platform 202, and each placement platform 202 is also provided with a corresponding switching motor 203 for driving. By driving the placement platform 202 to rotate through the switching motor 203, the user can easily change the mating position of the connector according to their own operating habits, so that corresponding adjustments can be made according to the individual circumstances of different operators during actual operation.

[0038] Furthermore, each of the workstation frames 201 is fixedly mounted with a detection cylinder 301 on its side; each of the detection cylinders 301 is mounted with a mounting pipe 302, which is used to assemble with the connector of the cylinder to be tested; each of the detection cylinders 301 is mounted with a connecting frame 303 on its top, which is fixedly mounted on one side of the rotating hole sleeve 106; the pressure regulating component is connected to the top frustum 105 and is used to adjust the air pressure inside the cylinder to be tested; the judgment component is connected to the workstation frame 201 and is used to analyze and judge the airtightness of the cylinder to be tested; the connecting component is connected to the connecting frame 303 and is used to control the connectivity of the connecting frame 303.

[0039] In this embodiment, one side of the mounting pipe 302 is connected to the detection cylinder 301, and the other side of the mounting pipe 302 is equipped with a corresponding connector to facilitate installation and cooperation with the connector of the cylinder to be tested. The installation of the mounting pipe 302 enables communication between the detection cylinder 301 and the inside of the cylinder to be tested. Then, the judgment component uses the pressure inside the detection cylinder 301 to reflect the actual detection status of the cylinder to be tested.

[0040] The four connecting brackets 303 are respectively adapted to the four through holes provided in the rotating hole sleeve 106, and the four connecting brackets 303 are respectively connected to the four probe cylinders 301. By cooperating with the pressure regulating component provided on the top truncated cone 105, the probe cylinder 301 at the designated work position can be pressurized, thereby pressurizing the oil cylinder to be tested at the designated work position. Then, the judgment component analyzes and judges the airtightness of the designated oil cylinder to be tested based on the subsequent changes in the internal air pressure of the probe cylinder 301.

[0041] Furthermore, the air outlet frame 401 is fixedly installed inside the top truncated cone 105; the constant pressure tank 402 is connected to the air outlet frame 401 and fixedly installed on the top truncated cone 105; the constant pressure detector 403 is installed on the constant pressure tank 402 for monitoring the air pressure inside the constant pressure tank 402; the pressure regulating air pump 404 is electrically connected to the constant pressure detector 403 and connected to the constant pressure tank 402, and is fixedly installed on the top truncated cone 105.

[0042] In this embodiment, the air outlet frame 401 is installed inside the top truncated cone 105. The air outlet frame 401 is L-shaped. The side of the top truncated cone 105 is provided with a corresponding circular hole that cooperates with the air outlet end of the air outlet frame 401. The position corresponding to the air outlet end of the air outlet frame 401 is the pressurization station. The two sides of the pressurization station are the loading and unloading station and the judgment station, respectively. The observation station is opposite to the processing station.

[0043] The air outlet frame 401 is connected to the constant pressure tank 402. The air pressure inside the constant pressure tank 402 is much greater than the normal external air pressure. The constant pressure tank 402 is equipped with a constant pressure detector 403, which is an air pressure sensing instrument to detect the air pressure inside the constant pressure tank 402. The pressure regulating air pump 404 is used to adjust the air pressure inside the constant pressure tank 402. The pressure regulating air pump 404 is connected to the constant pressure detector 403 through a corresponding connection control circuit so that when the air pressure inside the constant pressure tank 402 changes, the pressure regulating air pump 404 can quickly adjust, thereby ensuring a stable high pressure inside the constant pressure tank 402.

[0044] When the connecting frame 303 on the rotating sleeve 106 rotates to the pressurization position, the constant pressure tank 402 will be connected to the connecting frame 303, the probe cylinder 301, and the cylinder under test through the connecting component. At this time, the air pressure inside the constant pressure tank 402 will start to drop due to the connected equipment. When the constant pressure probe 403 detects the drop in air pressure inside the constant pressure tank 402, the pressure regulating air pump 404 will start to pressurize until the air pressure inside the constant pressure tank 402 returns to the originally set value range. At the same time, the air pressure inside the probe cylinder 301 and the cylinder under test will also continuously increase due to the influence of the constant pressure tank 402.

[0045] After the air pressure inside the constant pressure tank 402 is adjusted, the rotating sleeve 106 will rotate under the drive of the indexing frame 104 and the gear drive mechanism 107, and then move to the observation station. At the observation station, the judgment component will monitor the air pressure inside the detection cylinder 301 to facilitate subsequent analysis and judgment of the airtightness of the cylinder to be tested. As the rotating sleeve 106 and the indexing frame 104 rotate, the cylinder to be tested, originally at the loading / unloading station, will move to the pressurization station. Pressurization will then be completed through the above steps. When pressurization is complete and the cylinder is moved, the oil to be tested located at the observation station... The cylinder and the detection cylinder 301 will then be transferred to the judgment station. At the judgment station, the air tightness of the cylinder under test will be judged by the judgment component. Finally, it will be transferred to the loading and unloading station to complete the unloading and installation of the new cylinder under test. When the user is installing and disassembling at the loading and unloading station, the cylinder under test located at the pressurization station will be pressurized. At the same time, the cylinder under test located at the observation station will be continuously detected and data recorded. The cylinder under test located at the judgment station will be judged based on the detection records and data. In this way, the overall detection time will be greatly reduced when multiple cylinders are tested, and the detection efficiency of cylinder air tightness will be greatly accelerated.

[0046] Furthermore, each of the probe cylinders 301 is equipped with a pressure sensor 501 on its side. The pressure sensor 501 is connected to the probe cylinder 301 and fixedly installed on one side of the workstation frame 201. Four sensing and recording output devices 502 are respectively installed on the four workstation frames 201. The sensing and recording output devices 502 are electrically connected to the pressure sensor 501 installed on the same workstation frame 201. The scanning receiving device 503 is installed on the support column 102 and electrically connected to the analysis host 103.

[0047] Furthermore, the side-sliding guide 504 is fixedly installed on the detection platform 101; the mounting bracket 505 is slidably installed on the side-sliding guide 504; the label generating device 506 is installed on the mounting bracket 505 and electrically connected to the analysis host 103.

[0048] In this embodiment, the observation pressure sensor 501 is configured in a one-to-one correspondence with the detection cylinder 301, and the sensing recording output device 502 is configured in a one-to-one correspondence with the observation pressure sensor 501. The observation pressure sensor 501 is a pressure sensing device used to detect changes in air pressure inside the detection cylinder 301. In actual operation, the observation pressure sensor 501 can be set with a corresponding data recording rule. Data recording only begins when the air pressure inside the detection cylinder 301 is detected to be higher than the set air pressure range. The set air pressure value can correspond to the air pressure range value inside the constant pressure tank 402. This avoids the observation pressure sensor 501 recording data unrelated to airtightness judgment.

[0049] The sensing recording output device 502 generates a QR code or a corresponding signal transmission tag from the data detected by the observation pressure sensor 501, so that the recorded data can be read later by the scanning receiving device 503.

[0050] The scanning receiving device 503 is set at the judgment station. The scanning receiving device 503 is connected to the analysis host 103 through a corresponding connecting circuit board. The analysis host 103 can analyze and judge the data records received by the scanning receiving device 503. When the observation pressure sensor 501 starts recording, it means that the air pressure in the detection cylinder 301 and the oil cylinder under test is much greater than the external air pressure. If the oil cylinder does not leak, the air pressure detected by the observation pressure sensor 501 will fluctuate within a small range. If the oil cylinder leaks, the observation pressure sensor 501 will detect that the air pressure is constantly decreasing. The analysis host 103 can judge the air tightness of the specified oil cylinder under test by the change of air pressure according to the above principle and the set judgment program. Moreover, by combining the air pressure drop time, the degree of leakage of the oil cylinder under test can also be judged. The specific boundary and the judgment criteria for the degree of leakage can be set and adjusted according to the actual situation.

[0051] The side-sliding guide 504 is positioned corresponding to the loading and unloading station. The mounting bracket 505 can slide alongside the side-sliding guide 504. The label generating device 506 is mounted on the mounting bracket 505. The label generating device 506 is connected to the analysis host 103 via a corresponding connection circuit module. The label generating device 506 can generate a corresponding QR code or a corresponding scannable paper label from the generated airtightness judgment result. Then, the operator marks the oil cylinder under test by affixing the corresponding label. This allows for subsequent filtering based on the label content when the oil cylinders under test are transported or automatically grouped. For example, different levels of grouping can be set, such as no leakage, minor leakage, medium leakage, and severe leakage. The grouping is determined based on the gas leakage rate of the oil cylinder under test.

[0052] Meanwhile, the sliding of the mounting bracket 505 on the side sliding guide 504 allows the user to adjust the placement of the label generating device 506 according to their own operating habits to match the installation position of the mounting pipe 302. In actual operation, the operator only needs to be at the loading and unloading station. The operator's main operations include loading and unloading the connectors and pasting the labels. The remaining operations can be completed automatically by the set mechanism. The subsequent judgment can also be automatically grouped and transmitted by scanning the labels.

[0053] Furthermore, the sliding guide 601 is fixedly installed inside the connecting frame 303; the movable plug 602 is slidably installed on the sliding guide 601; and the two sides of the ejection spring 603 are respectively connected to the movable plug 602 and the sliding guide 601.

[0054] Furthermore, the ejector cylinder 604 is fixedly installed inside the air outlet frame 401; the ejector plug 605 is slidably connected to the ejector cylinder 604 and the air outlet frame 401; the pressure control pump 606 is connected to the ejector cylinder 604 and fixedly installed on the top frustum 105; the ejector frame 607 is slidably installed inside the top frustum 105; the ejector screw drive mechanism 608 is connected to the ejector frame 607 and is used to drive the ejector frame 607.

[0055] In this embodiment, the sliding guide 601 is fixed inside the connecting frame 303, and the movable plug 602 is slidably installed on the sliding guide 601. The ejection spring 603 is provided at the position where the movable plug 602 cooperates with the sliding guide 601. When the movable plug 602 is not subjected to any external force, it will pop out under the action of the ejection spring 603, thereby sealing the through hole of the connecting frame 303. This ensures that the air pressure inside the detection cylinder 301 and the oil cylinder under test can remain stable after pressurization, and prevents pressure leakage during process transition.

[0056] Both the ejector cylinder 604 and the ejector rod 605 are installed inside the air outlet frame 401. The ejector cylinder 604 is connected to the pressure control pump 606 through an air guide pipe. By changing the air pressure inside the ejector cylinder 604 through the pressure control pump 606, the ejector rod 605 can be driven. In order to ensure the stable movement of the ejector rod 605, a corresponding guide frame is also provided inside the air outlet frame 401 for guidance.

[0057] The ejector frame 607 is adapted to the sliding groove provided on the top truncated cone 105. The ejector frame 607 is driven by the ejector screw drive mechanism 608, which consists of a corresponding screw and a motor. The motor drives the screw to rotate, thereby completing the drive of the corresponding frame. The bottom of the ejector frame 607 is provided with a corresponding ejector cylinder.

[0058] The movement of the ejector rod 605 and the ejector frame 607 can compress the movable plug 602 within the corresponding connector frame 303, thereby opening the connector frame 303 interface at the corresponding workstation. The ejector rod 605 is used to open the connector frame 303 interface at the pressurization workstation to pressurize the inside of the probe cylinder 301 and the corresponding test cylinder. The ejector frame 607 is used to open the connector frame 303 interface at the judgment workstation so that after the airtightness judgment of the specified test cylinder is completed, excess gas inside the probe cylinder 301 and the test cylinder can be discharged by opening the connector frame 303 interface, so that the user will not be affected by the air pressure inside the test cylinder when disassembling the connector later.

[0059] Preferably, the test assembly provided by the present invention further includes a double-ended screw 701, an interface baffle 702, a side baffle 703, an adjustment motor 704, and a locking component, wherein the locking component includes a locking plate 705 and a bidirectional lead screw drive mechanism 706.

[0060] Furthermore, each of the workstation frames 201 is rotatably mounted with a double-ended screw 701; the interface baffle 702 is threadedly connected to one side of the double-ended screw 701 and slidably mounted on the workstation frame 201; the side baffle 703 is threadedly connected to the other side of the double-ended screw 701 and slidably mounted on the workstation frame 201; the output shaft of the adjusting motor 704 is connected to the double-ended screw 701, and the adjusting motor 704 is fixedly mounted on the workstation frame 201; the locking component is connected to the workstation frame 201 and is used to limit the position of the hydraulic cylinder to be tested placed on the workstation frame 201.

[0061] Furthermore, the positioning component includes a locking plate 705 and a bidirectional lead screw drive mechanism 706. Two locking plates 705 are slidably mounted on each workstation frame 201. Each workstation frame 201 is provided with a bidirectional lead screw drive mechanism 706, which is connected to the two locking plates 705 provided on the corresponding workstation frame 201 and is used to drive the two locking plates 705.

[0062] In this embodiment, each workstation frame 201 is symmetrically and slidably equipped with an interface baffle 702 and a side baffle 703. The interface baffle 702 and the side baffle 703 are driven by a double-ended screw 701. The threads on both sides of the double-ended screw 701 have opposite directions of rotation. The interface baffle 702 and the side baffle 703 are respectively disposed on both sides of the double-ended screw 701. The double-ended screw 701 is driven by an adjusting motor 704. When the adjusting motor 704 drives the double-ended screw 701 to rotate... The interface baffle 702 and the side baffle 703, which are connected to both sides of the double-ended screw 701, will move closer together or unfold, thereby adjusting the distance between the interface baffle 702 and the side baffle 703. The interface baffle 702 is provided with a corresponding pipe through hole, and the mounting pipe 302 passes through the interface baffle 702 through the pipe through hole, so that the mounting pipe 302 can be better placed by the limiting of the interface baffle 702, and prevent the mounting pipe 302 from falling or scattering to other positions when the user is assembling.

[0063] The two clamping plates 705 mounted on the workstation frame 201 are driven by the bidirectional lead screw drive mechanism 706. The bidirectional lead screw drive mechanism 706 operates on the same principle as the double-ended screw 701. The bidirectional lead screw drive mechanism 706 mainly consists of lead screws with opposite thread directions on both sides and a motor that drives the lead screws to rotate. The motor drives the lead screws with opposite thread directions on both sides to rotate, thereby causing the clamping plates 705 on both sides to move relative to each other. The relative movement of the two clamping plates 705, in conjunction with the relative movement of the interface baffle 702 and the side baffle 703, can limit the position of the hydraulic cylinder to be tested placed on the workstation frame 201, preventing the hydraulic cylinder to be tested from rolling off the workstation frame 201 during workstation transfer. At the same time, the user can also adjust the limiting area formed by the two clamping plates 705, the interface baffle 702, and the side baffle 703 according to the actual size of the hydraulic cylinder to be tested, so that the hydraulic cylinder to be tested can be placed more stably.

[0064] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A brake cylinder airtightness testing device, comprising a testing platform, a support column, and an analysis host, wherein the support column is fixedly mounted on the testing platform, and the analysis host is mounted on the testing platform, characterized in that, It also includes a testing component; The test assembly includes a rotation frame, a top frustum, a rotating sleeve, a gear drive mechanism, a support component, and a working component; The indexing frame is rotatably mounted on the support column, the top truncated cone is fixedly mounted on the support column, the rotating hole sleeve is rotatably mounted on the top truncated cone and fixedly connected to the indexing frame, the gear drive mechanism is connected to the detection platform and is used to drive the indexing frame, the placement component is connected to the indexing frame and is used to place the cylinder to be tested, and the working component is connected to the rotating hole sleeve and is used to perform airtightness testing on the corresponding cylinder.

2. The brake cylinder airtightness testing device as described in claim 1, characterized in that, The support structure includes a workstation frame, a placement platform, and a switching motor. Four workstation frames are fixedly installed on the outside of the rotating frame. A placement platform is rotatably installed on each workstation frame. The switching motor is installed on each workstation frame, and the output shaft of the switching motor is connected to the placement platform installed on the corresponding workstation frame.

3. The brake cylinder airtightness testing device as described in claim 2, characterized in that, The operating components include a probe cylinder, a mounting pipe, a connector, a pressure regulating component, a judgment component, and a connection component. A probe cylinder is fixedly installed on the side of each workstation frame. A mounting pipe is installed on each probe cylinder for assembling with the connector of the cylinder to be tested. A connector is installed on the top of each probe cylinder, and the connector is fixedly installed on one side of the rotating sleeve. The pressure regulating component is connected to the top frustum and is used to adjust the air pressure inside the cylinder to be tested. The judgment component is connected to the workstation frame and is used to analyze and judge the airtightness of the cylinder to be tested. The connection component is connected to the connector and is used to control the connectivity of the connector.

4. The brake cylinder airtightness testing device as described in claim 3, characterized in that, The pressure regulating component includes an air outlet frame, a constant pressure tank, a constant pressure detector, and a pressure regulating air pump. The air outlet frame is fixedly installed inside the top circular platform. The constant pressure tank is connected to the air outlet frame and fixedly installed on the top circular platform. The constant pressure detector is installed on the constant pressure tank for monitoring the air pressure inside the constant pressure tank. The pressure regulating air pump is electrically connected to the constant pressure detector and connected to the constant pressure tank, and is fixedly installed on the top circular platform.

5. The brake cylinder airtightness testing device as described in claim 3, characterized in that, The judgment component includes a pressure sensor, a recording output device, and a scanning receiver. Each of the probe cylinders is equipped with a pressure sensor on its side. The pressure sensor is connected to the probe cylinder and fixedly installed on one side of the workstation frame. The four recording output devices are respectively installed on the four workstation frames and are electrically connected to the pressure sensor installed on the same workstation frame. The scanning receiver is installed on the support column and is electrically connected to the analysis host.

6. The brake cylinder airtightness testing device as described in claim 4, characterized in that, The guiding component includes a sliding guide, a movable plug, and an ejector spring. The sliding guide is fixedly installed inside the connecting frame. The movable plug is slidably installed on the sliding guide. The two sides of the ejector spring are respectively connected to the movable plug and the sliding guide.

7. The brake cylinder airtightness testing device as described in claim 5, characterized in that, The judgment component also includes a sliding guide, a mounting bracket, and a label generating device. The sliding guide is fixedly installed on the detection platform; the mounting bracket is slidably installed on the sliding guide; and the label generating device is installed on the mounting bracket and electrically connected to the analysis host.

8. The brake cylinder airtightness testing device as described in claim 6, characterized in that, The guiding component further includes an ejector cylinder, an ejector plug rod, a pressure control pump, an ejector frame, and an ejector screw drive mechanism. The ejector cylinder is fixedly installed inside the exhaust frame. The ejector plug rod is slidably connected to the ejector cylinder and to the exhaust frame. The pressure control pump is connected to the ejector cylinder and fixedly installed on the top circular platform. The ejector frame is slidably installed inside the top circular platform. The ejector screw drive mechanism is connected to the ejector frame and is used to drive the ejector frame.

9. The brake cylinder airtightness testing device as described in claim 2, characterized in that, The testing assembly also includes a double-ended screw, an interface baffle, a side baffle, an adjusting motor, and a locking component. Each of the workstations has a double-ended screw rotatably mounted on it. The interface baffle is threaded to one side of the double-ended screw and slidably mounted on the workstation. The side baffle is threaded to the other side of the double-ended screw and slidably mounted on the workstation. The output shaft of the adjusting motor is connected to the double-ended screw, and the adjusting motor is fixedly mounted on the workstation. The locking component is connected to the workstation and is used to limit the movement of the hydraulic cylinder to be tested placed on the workstation.

10. The brake cylinder airtightness testing device as described in claim 9, characterized in that, The positioning component includes a clamping plate and a bidirectional screw drive mechanism. Two clamping plates are slidably installed on each workstation frame. The bidirectional screw drive mechanism is provided on each workstation frame and is connected to the two clamping plates provided on the corresponding workstation frame for driving the two clamping plates.

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