Static pressure experiment detection table for motor gear box

Abstract

The invention provides a motor gear box static pressure test detection bench. The motor gear box static pressure test detection bench comprises a rack, a frame, a cylinder, a workpiece support and a control center. A hollowed-out structure is arranged in the middle of the rack to integrate a control center, the frames are symmetrically distributed on the two sides of the rack, the distance is accurately matched with the outer diameter of the cylinder, and the cylinder is rapidly positioned through a top clamping block. Modularized air pressure mold design is innovatively adopted, the front end of an inverted-U-shaped structure is provided with a teflon sealing gasket, the tail end of the inverted-U-shaped structure is detachably connected with an air cylinder through an air cylinder hole, and an efficient sealing system is formed in cooperation with a compressed air inlet in the side end. The workpiece support and the platform are of a detachable structure, and mounting of gear boxes of multiple specifications is supported. The air path system is provided with a precision filter to ensure air cleanliness, and a switch controller arranged outside the frame is linked with an intelligent control center to realize accurate control of experimental parameters and data acquisition. According to the device, the technical bottlenecks of poor sealing performance, low adaptability, difficulty in maintenance and the like of traditional equipment are solved, the test precision is remarkably improved, and the service life of the equipment is remarkably prolonged.

Description

Technical Field

[0001] The invention relates to the field of mechanical transmission system testing, and in particular to a static pressure test bench for a motor gear box. Background Art

[0002] During the development and production of motor gearboxes, static pressure tests are required to verify their sealing performance and structural strength. Traditional testing equipment generally has the following technical defects: 1) The equipment structure is complex, and the cylinder installation position is fixed, which makes it impossible to adapt to workpieces of different sizes; 2) The sealing system has poor reliability, and pressure leakage is prone to occur during the experiment, resulting in distortion of test data; 3) Lack of modular design, maintenance and replacement of parts is time-consuming and laborious; 4) The air pressure control accuracy is insufficient, and accurate pressure holding tests cannot be achieved; 5) The equipment has poor stability, and structural deformation is prone to occur after high-frequency testing.

[0003] Although the existing public hydraulic test bench adopts a frame structure, it has technical bottlenecks such as poor sealing between the air pressure mold and the workpiece joint surface and large fluctuations in test pressure. In addition, the pneumatic pipeline of traditional equipment is not equipped with a precision filtering device, and pollutants can easily cause cylinder wear and affect the service life of the equipment. During the test process, the workpiece fixing method is single, which cannot meet the testing requirements of special-shaped gearboxes, and there is a lack of intelligent control system. The experimental parameters need to be recorded manually, which is inefficient. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a motor gearbox static pressure test bench.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a motor gearbox static pressure test bench, comprising a bench, a frame, a cylinder, a workpiece holder and a control center; the middle part of the bench is a hollow structure; the control center is arranged in the hollow middle part of the bench; the frames are symmetrically arranged on both sides of the middle part of the upper end of the bench; the spacing between the symmetrically arranged frames is equal to the outer diameter of the cylinder body of the cylinder; a block is also provided on the top of the cylinder; the outer size of the block is larger than the spacing between the frames; the workpiece holder is arranged on the upper surface of the bench; and a platform is also provided between the workpiece holder and the bench.

[0006] Preferably, a pneumatic mold is provided on the front end of the cylinder; the pneumatic mold is arranged in an inverted concave shape; a sealing gasket is also provided at the front end of the pneumatic mold; a cylinder hole is provided on the end of the pneumatic mold; the cylinder and the pneumatic mold are detachably connected through the cylinder hole.

[0007] Preferably, a compressed air inlet is also provided on the side end of the air pressure mold.

[0008] Preferably, the sealing gasket is a polytetrafluoroethylene sealing gasket.

[0009] Preferably, a switch controller is also provided on the outer end of the frame; the switch controller is connected to the control center via an electrical signal.

[0010] Preferably, the stand is made of steel or aluminum alloy material with high strength and corrosion resistance, and the upper surface of the stand is provided with an anti-slip coating.

[0011] Preferably, the workpiece support and the platform are detachably arranged.

[0012] Preferably, the compressed air inlet is connected to an external air source via a pipeline, and a filter is provided in the pipeline to ensure that the air entering the cylinder and the pneumatic mold is clean to avoid contamination and damage to the equipment.

[0013] Preferably, the control center is equipped with a computer control system, which sets test parameters through a human-machine interface, automatically records test data, and generates a test report.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the static pressure test bench for the motor gearbox of the present invention has a simple structure, is easy to operate, and can perform static pressure test with high precision and high efficiency. Through precise pressure control and real-time monitoring system, important performance indicators such as sealing and load-bearing capacity of the motor gearbox can be comprehensively evaluated to ensure the quality and safety of the gearbox. At the same time, the system has a high degree of automation, and data processing is timely and accurate, which can greatly improve the detection efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the air pressure mold; In the figure: 1-stand; 2-frame; 3-cylinder; 4-workpiece support; 5-control center; 11-anti-slip coating; 21-switch controller; 31-block; 32-pneumatic mold; 33-sealing pad; 34-cylinder hole; 35-compressed air inlet; 41-platform. DETAILED DESCRIPTION

[0016] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed description is given in conjunction with the embodiments.

[0017] Please refer to Figure 1 as well as Figure 2The present invention provides a motor gearbox static pressure test bench, comprising a bench 1, a frame 2, a cylinder 3, a workpiece support 4 and a control center 5; the middle part of the bench 1 is a hollow structure; the control center 5 is arranged in the hollow middle part of the bench 1; the frames 2 are symmetrically arranged on both sides of the middle part of the upper end of the bench 1; the spacing between the symmetrically arranged frames 2 is equal to the outer diameter of the cylinder body of the cylinder 3; a block 31 is also provided on the top of the cylinder 3; the outer size of the block 31 is larger than the spacing between the frames 2; the workpiece support 4 is arranged on the upper surface of the bench 1; a platform 41 is also provided between the workpiece support 4 and the bench 1.

[0018] The hollow structure in the middle of the stand 1 reduces the use of materials, making the overall structure of the stand 1 lighter, and may help reduce the overall weight of the equipment, improve its convenience in handling and adjustment; and provide a reasonable layout space for the control center 5 and other components; the control center 5 is set in the middle of the stand 1, which can make the control system more compact, not occupying additional space, and make it more convenient for operators to operate and observe. The frame 2 is symmetrically arranged on both sides of the middle of the upper end of the stand 1, which can ensure the balance of the equipment and enhance the stability of the structure. This design helps to share the load, avoid equipment deflection or unnecessary stress concentration, thereby improving the service life and reliability of the equipment. The spacing of the frame 2 is equal to the outer diameter of the cylinder 3, which can ensure that the cylinder 3 is stably in the frame 2 during operation, reducing vibration or position deviation that may occur during use. The spacing between the cylinder 3 and the frame 2 ensures that the cylinder can be accurately installed and will not be disturbed during the experiment. The size of the block 31 is designed to be larger than the spacing between the frames 2, which can ensure that the top of the cylinder 3 is not easy to fall off or unstable during operation, thereby enhancing safety. The workpiece support 4 is located on the upper surface of the bench 1, and a platform 41 is set between the bench 1. The setting of the platform 41 not only provides the stability of the support, but also may have a certain adjustment function, which is convenient for adjustment according to the experimental needs. The workpiece support is more stable, which is conducive to the accurate conduct of the experiment. The platform 41 also plays the role of isolation and protection, so that the workpiece support 4 and the bench 1 have a better connection method, and at the same time, it can also prevent wear or instability caused by direct contact.

[0019] Preferably, a pneumatic mold 32 is provided on the front end of the cylinder 3; the pneumatic mold 32 is arranged in an inverted concave shape; a sealing gasket 33 is also provided on the front end of the pneumatic mold 32; a cylinder hole 34 is provided on the end of the pneumatic mold 32; the cylinder 3 and the pneumatic mold 32 are detachably connected through the cylinder hole 34.

[0020] The inverted concave structure helps to provide better force distribution during the use of the pneumatic mold 32, ensures a more uniform contact between the pneumatic mold 32 and the cylinder 3, and reduces possible wear or damage. In addition, it can also effectively increase the stability of the mold and ensure the durability and sealing of the mold under high pressure. A sealing pad 33 is provided at the front end of the pneumatic mold 32, which can effectively prevent gas leakage and ensure the airtightness between the cylinder 3 and the pneumatic mold 32. This is crucial for working environments that require high precision and high stability, especially in systems involving air pressure control, where sealing is crucial to the safety and efficiency of operation. The design of the cylinder hole 34 makes the connection between the cylinder 3 and the pneumatic mold 32 more flexible. Through the detachable connection, it can be easily repaired, replaced or adjusted. This detachable connection method improves the maintainability and adaptability of the equipment, so that when a fault occurs or parts need to be replaced, the problem can be quickly solved and downtime can be reduced. The design of the detachable connection between the cylinder and the pneumatic mold through the cylinder hole has high operational convenience and modular characteristics. When repairing or replacing parts, there is no need to disassemble the entire system, and operators can easily replace or repair individual components. This structure effectively reduces the complexity of operation, reduces the workload of workers and reduces the potential risk of errors.

[0021] Preferably, a compressed air inlet 35 is further provided on the side end of the air pressure mold 32 .

[0022] The setting of the compressed air inlet 35 can adjust the inside of the mold by compressed air, thereby providing higher flexibility for mold operation. For example, compressed air can be used to adjust the internal pressure of the mold, control the mold temperature, or drive certain functions of the mold, such as cooling or exhaust. This method can more accurately control the working conditions of the mold and optimize the production process. At the same time, the mold will wear and age due to temperature changes and pressure fluctuations during long-term operation. By using compressed air for adjustment, the wear caused by excessive temperature difference or uneven pressure can be reduced, thereby extending the service life of the mold. Especially in manufacturing with high precision requirements, it is particularly important to maintain a stable working environment for the mold. Due to changes in temperature or pressure, the mold may be deformed during operation, resulting in problems such as mold jamming. By using compressed air to adjust the air pressure or cooling rate of the mold, these phenomena can be avoided to a certain extent, thereby ensuring the normal operation of the mold.

[0023] Preferably, the sealing gasket 33 is a polytetrafluoroethylene sealing gasket.

[0024] PTFE gaskets (usually referring to polytetrafluoroethylene, PTFE) have excellent chemical resistance and can resist corrosion from most acids, alkalis, solvents and other chemical substances. This allows PTFE gaskets to be used in some harsh working environments, especially in gas or liquid transmission systems that require corrosion resistance, to provide reliable sealing performance to avoid leakage or damage to other components. They also have good wear resistance, are not easy to age or deform, and are not prone to cracks or wear during long-term use.

[0025] Preferably, a switch controller 21 is further provided on the outer end of the frame 2 ; the switch controller 21 is connected to the control center 5 via electrical signals.

[0026] Preferably, the stand 1 is made of steel or aluminum alloy material with high strength and corrosion resistance, and an anti-slip coating 11 is provided on the upper surface of the stand 1.

[0027] The stand made of steel or aluminum alloy can ensure its stability during long-term use and will not cause structural failure due to insufficient strength or corrosion problems. The upper surface of the stand 1 is provided with an anti-slip coating 11, which can significantly increase the friction of the stand surface and reduce the risk of slipping when placing objects or personnel operating. The anti-slip coating 11 can effectively prevent objects from slipping, especially in wet, greasy or high-frequency use environments, ensuring safe use. The high strength and corrosion resistance reduce the maintenance requirements of the stand, so that users do not need to frequently replace or repair the stand, reducing maintenance costs. At the same time, the presence of the anti-slip coating can also reduce wear or damage caused by improper use, thereby increasing the service life of the stand.

[0028] Preferably, the workpiece support 4 and the platform 41 are detachably arranged.

[0029] Preferably, the compressed air inlet 35 is connected to an external air source through a pipeline, and a filter is provided in the pipeline to ensure that the air entering the cylinder 3 and the pneumatic mold 32 is clean to avoid contamination and damage to the equipment.

[0030] Preferably, the control center 5 is equipped with a computer control system, which sets test parameters through a human-machine interface, automatically records test data, and generates a test report.

[0031] Specific implementation: Step 1: Make sure the cylinder is in ventilation state and start the machine: Before operation, first ensure that all cylinders and gas pipelines are connected properly. Check whether the gas supply to the cylinder is stable and confirm that the gas pressure meets the operating requirements.

[0032] Turn on the air supply system and the machine control panel to ensure that the machine is in operation. Usually, there will be a cylinder status display on the control panel of the equipment to ensure that the cylinder is in a ventilated state and can be started smoothly.

[0033] Step 2: Place the gearbox output shaft downward on the workpiece support: Carefully place the gearbox on the workpiece support, making sure the gearbox output shaft is facing downward. This step is critical to the positioning of the gearbox, and the output shaft facing downward ensures the correctness of the test during the airtight leak test.

[0034] Adjust the position of the gearbox so that it is aligned with the locating slots or support members on the workpiece holder to ensure that it is firmly placed.

[0035] Step 3: Set the corresponding test pressure and upper and lower leakage limits on the differential pressure airtight leak detector: Turn on the differential pressure leak detector, enter the settings menu, and set the corresponding test pressure range according to the specifications and requirements of the gearbox. The test pressure needs to be set according to the design requirements of the gearbox.

[0036] Set leakage standards: Enter the upper and lower leakage limit values ​​according to industry standards or product requirements. The upper limit represents the maximum leakage allowed, and the lower limit is the minimum leakage that the equipment determines is qualified. Make sure these two standards meet production specifications.

[0037] Step 4: Start the cylinder to make the air pressure mold seal the upper opening of the gear box: Start the cylinder and seal the upper opening of the gearbox through the air pressure mold. This step is critical because only when the upper opening of the gearbox is sealed can the airtight leak detector perform effective leak detection.

[0038] Ensure that the air pressure mold and the upper opening of the gear box are well sealed to avoid any possible gas leakage and test errors.

[0039] Step 5: Start the gas test switch and wait for the gas test results Press the gas test switch to start the air tightness detection process. At this time, the differential pressure air tightness leak detector will begin to test the change of air pressure, and the system will automatically monitor the change of air pressure to evaluate whether there is a leak.

[0040] Wait for the test process to end. The time of this process depends on the air tightness of the equipment and the set test pressure, usually it takes a few seconds to a few minutes. The leak detector will automatically display the test results, and you can check whether it meets the standards.

[0041] Step 6: Confirm the test results, activate the pressure relief button, and remove the qualified workpiece after pressure relief: Check the gas test results. If the leakage is within the set standard range, the workpiece is considered qualified. If it exceeds the upper limit of leakage, the workpiece needs to be rechecked or repaired.

[0042] If the workpiece is qualified, activate the pressure relief button to gradually reduce the air pressure in the gearbox to a safe value. During the pressure relief process, ensure that the gas is discharged smoothly to avoid damage to the equipment due to incomplete gas discharge.

[0043] After the pressure relief is completed, remove the workpiece. After confirming that the workpiece is safe and intact, remove the cylinder and mold, and prepare to send the qualified workpiece to the next process.

[0044] The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, changes and modifications made without departing from the spirit and scope of the present invention are all within the scope of patent protection of the present invention.

Claims

1. Motor gearbox static pressure test bench, characterized by: The invention comprises a stand (1), a frame (2), a cylinder (3), a workpiece support (4) and a control center (5); the middle part of the stand (1) is a hollow structure; the control center (5) is arranged in the hollow middle part of the stand (1); the frames (2) are symmetrically arranged on both sides of the middle part of the upper end of the stand (1); the spacing between the symmetrically arranged frames (2) is equal to the outer diameter of the cylinder body of the cylinder (3); a clamping block (31) is also provided at the top of the cylinder (3); the outer dimension of the clamping block (31) is larger than the spacing between the frames (2); the workpiece support (4) is arranged on the upper surface of the stand (1); and a platform (41) is also provided between the workpiece support (4) and the stand (1).

2. The motor gearbox static pressure test bench according to claim 1, characterized in that: A pneumatic mold (32) is provided at the front end of the cylinder (3); the pneumatic mold (32) is arranged in an inverted concave shape; a sealing gasket (33) is also provided at the front end of the pneumatic mold (32); a cylinder hole (34) is provided at the end of the pneumatic mold (32); the cylinder (3) and the pneumatic mold (32) are detachably connected via the cylinder hole (34).

3. The motor gearbox static pressure test bench according to claim 2, characterized in that: A compressed air inlet (35) is also provided on the side end of the air pressure mold (32).

4. The motor gearbox static pressure test bench according to claim 2, characterized in that: The sealing gasket (33) is a polytetrafluoroethylene sealing gasket.

5. The motor gearbox static pressure test bench according to claim 1, characterized in that: A switch controller (21) is also provided on the outer end of the frame (2); the switch controller (21) is connected to the control center (5) via an electrical signal.

6. The motor gearbox static pressure test bench according to claim 1, characterized in that: The stand (1) is made of steel or aluminum alloy material and has high strength and corrosion resistance, and an anti-slip coating (11) is provided on the upper surface of the stand (1).

7. The motor gearbox static pressure test bench according to claim 1, characterized in that: The workpiece support (4) and the platform (41) are detachably arranged.

8. The motor gearbox static pressure test bench according to claim 1, characterized in that: The compressed air inlet (35) is connected to an external air source via a pipeline, and a filter is provided in the pipeline to ensure that the air entering the cylinder (3) and the air pressure mold (32) is clean, thereby avoiding contamination and damage to the equipment.

9. The motor gearbox static pressure test bench according to claim 1, characterized in that: The control center (5) is equipped with a computer control system, which sets test parameters through a human-machine interface, automatically records test data, and generates a test report.

Images