Reciprocating oil seal detection device and reciprocating oil seal detection test bed

Abstract

The invention relates to the technical field of sealing performance testing, in particular to a reciprocating oil seal detection device and a reciprocating oil seal detection testbed. The slide way is arranged in the device shell; the slide block is slidably arranged in the slide way and is connected with a test reciprocating shaft, and a first force sensor is arranged between the slide block and the test reciprocating shaft; the crankshaft is rotatably arranged in the device shell and is connected to the motor; one end of the connecting rod is connected to the connecting rod journal of the crankshaft and the other end is connected to the slider; the sealing installation seat is installed in the device shell, second force sensors are arranged between the two sides of the sealing installation seat and the device shell respectively, the testing reciprocating shaft penetrates through the sealing installation seat in a sliding mode, and the sealing piece to be tested is arranged between the testing reciprocating shaft and the sealing installation seat. According to the scheme, the defect that in the prior art, a sealing detection mode for the working condition of an underground emulsion plunger pump is lacked is overcome, and efficient measurement and evaluation of key performance indexes of a sealing piece are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of sealing performance testing, and particularly to a reciprocating oil seal detection device and a reciprocating oil seal detection test bench. Background Art

[0002] As a core component in a coal mine hydraulic system, the sealing performance of a mining emulsion piston pump is directly related to the reliability, stability, and service life of the entire system. However, one of the key issues restricting the development of emulsion pumps is the optimization and improvement of their sealing performance. Currently, there is a common phenomenon of leakage in existing mining emulsion pump stations, which not only affects the working efficiency of the equipment but may also lead to serious safety accidents and huge property losses.

[0003] Traditional sealing performance detection methods mainly rely on in-machine detection. On the one hand, this method occupies valuable operation time of the pump station and increases the cost of seal detection; on the other hand, since only qualitative evaluation can be carried out, it is difficult to accurately judge the specific performance of different seal products under actual working conditions. In addition, there is currently a lack of a dedicated sealing detection method for the working conditions of underground emulsion piston pumps, resulting in a long testing cycle and high cost for the performance and life tests of existing seal products, further restricting the research and application of new seal materials and technologies. Summary of the Invention

[0004] The present invention provides a reciprocating oil seal detection device and a reciprocating oil seal detection test bench to solve the defects in the prior art that the sealing performance and life detection methods have a long cycle and high cost, and there is a lack of a sealing detection method for the working conditions of underground emulsion piston pumps, and to achieve efficient measurement and evaluation of the key performance indicators of seals.

[0005] The present invention provides a reciprocating oil seal detection device, including: a device housing; a slideway disposed inside the device housing; a slider slidably disposed in the slideway, the slider being connected to a test reciprocating shaft, and a first force sensor being provided between the two; a crankshaft rotatably disposed inside the device housing and connected to a motor; a connecting rod having one end connected to the crankpin of the crankshaft and the other end connected to the slider; a seal mounting seat installed inside the device housing, with second force sensors respectively provided between its two sides and the device housing, the test reciprocating shaft sliding through the seal mounting seat, and a seal to be tested being disposed between the test reciprocating shaft and the seal mounting seat.

[0006] According to an embodiment of the present invention, the device housing includes: a transmission mechanism housing, the crankshaft is installed in the transmission mechanism housing, and at least one end of the crankshaft extends out of the transmission mechanism housing for connecting to the motor; a test shaft end cover installed on the transmission mechanism housing, and the slideway is detachably installed on the test shaft end cover; a guide housing detachably installed on the test shaft end cover, and the seal mounting seat is detachably installed on the guide housing; a leakage liquid collection barrel installed on the guide housing and clamping the seal mounting seat in the middle, and there is a space for the movement of the test reciprocating shaft in the leakage liquid collection barrel.

[0007] According to an embodiment of the present invention, a liquid leakage hole is provided at the bottom of the leakage liquid collection barrel.

[0008] According to an embodiment of the present invention, the internal spaces of the transmission mechanism housing, the test shaft end cover and the guide housing are filled with oil, and the seal mounting seat seals the oil in this internal space through the seal to be tested; a temperature sensor is provided on the inner side of the transmission mechanism housing for real-time detection of the temperature of the oil.

[0009] According to an embodiment of the present invention, at least three of the second force sensors are respectively provided on both sides of the seal mounting seat; the at least three second force sensors are evenly distributed in the circumferential direction of the seal mounting seat.

[0010] The present invention also provides a reciprocating oil seal detection test bench, including: a test tabletop, and the above-mentioned reciprocating oil seal detection device is provided on the test tabletop; a motor is provided on the test tabletop and is in transmission connection with the reciprocating oil seal detection device.

[0011] According to an embodiment of the present invention, an integrated assembly space is formed below the test tabletop; the following are provided in the integrated assembly space: a hydraulic system including a sub-tank and a hydraulic pump that form an oil circuit with the reciprocating oil seal detection device; an electric control cabinet provided with an electric control system for controlling the motor and the hydraulic system.

[0012] According to an embodiment of the present invention, the hydraulic system further includes: an oil return filter provided on the oil return circuit for filtering the oil flowing from the reciprocating oil seal detection device to the sub-tank; and / or an air cooler provided on the oil return circuit for reducing the temperature of the oil passing through the air cooler; and / or a heater provided in the sub-tank for heating the oil in the sub-tank.

[0013] According to an embodiment of the present invention, above the test tabletop, there are provided: a buffer pad, which includes shock-absorbing rubber piers arranged at the bottom support of the reciprocating oil seal detection device and a rubber pad for integrally bearing the reciprocating oil seal detection device; and / or, an oil collector, located below the reciprocating oil seal detection device, for collecting the spilled oil; and / or, a camera, located on one side of the reciprocating oil seal detection device, for real-time monitoring of the working state of the device.

[0014] According to an embodiment of the present invention, it further includes: a protective cover, covering above the test tabletop, and an acoustic absorption sponge layer is provided on the inner side of the protective cover; a suspended console, arranged outside the protective cover and connected to the electric control cabinet, for human-machine interaction.

[0015] The reciprocating oil seal detection device and the reciprocating oil seal detection test bench provided by the present invention realize efficient measurement and evaluation of the seal under simulated actual working conditions. The device uses a mechanical structure composed of a crankshaft, a connecting rod, and a slider to enable the test reciprocating shaft to simulate the actual working state of the plunger pump, while the first force sensor and the second force sensor are respectively used to monitor the change of friction force and the pressure distribution on both sides of the mounting seat during the sealing process in real time, so as to accurately obtain the key performance indicators of the seal under different working conditions. In addition, the device does not need to occupy the use time of the pump station for in-machine detection, effectively reducing the cost of seal detection and shortening the test cycle, while providing quantitative data support to make up for the deficiency of only qualitative evaluation in the existing technology. Especially for the working environment of downhole emulsion plunger pumps, a special seal detection method is provided, solving the problem of lack of pertinence in traditional detection methods and promoting the research, development, and application of high-performance seal materials and technologies. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic structural diagram of the reciprocating oil seal detection test bench provided by the present invention.

[0018] Figure 2 It is a cross-sectional structural diagram of the reciprocating oil seal detection device provided by the present invention.

[0019] Figure 3 It is a module schematic diagram of the hydraulic system of the reciprocating oil seal detection test bench provided by the present invention.

[0020] Reference Signs: 11. Slideway; 12. Slide block; 13. Test reciprocating shaft; 14. First force sensor; 15. Crankshaft; 16. Sealed mounting seat; 17. Second force sensor; 21. Transmission mechanism housing; 22. Test shaft end cover; 23. Guide housing; 24. Leakage liquid collection bucket; 25. Liquid leakage hole; 30. Test table; 31. Motor; 32. Auxiliary fuel tank; 33. Electric control cabinet; 34. Buffer pad; 35. Protective cover; 36. Suspended console. Detailed implementation manners

[0021] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without any creative efforts shall fall within the protection scope of the present invention.

[0022] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationships indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are the orientation or positional relationships based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the embodiments of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. It should also be noted that in the description of the present invention, unless otherwise clearly defined and limited, the terms "set", "installed", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0023] The present invention provides a reciprocating oil seal detection device specifically designed for the reciprocating seal of a mining emulsion piston pump. The device is highly practical and has a reasonable structure, meeting the test requirements for the reciprocating seal of a mining piston pump. Through this device, it is not necessary to conduct tests under the condition of long-term high-power operation of the pump, which can ensure the accuracy, reliability, and rapidity of the test process and has the ability of intelligent operation. Therefore, it can significantly reduce the experimental cost and provide an efficient and economical solution for evaluating the sealing performance.

[0024] The following Figures 1-3 describes the detailed implementation manners of the reciprocating oil seal detection device and the reciprocating oil seal detection test bench of the present invention.

[0025] like Figure 1 and Figure 2 As shown, the present invention provides a reciprocating oil seal detection device, comprising: a device housing; a slideway 11, which is arranged in the device housing; a slider 12, which is slidably arranged in the slideway 11, the slider 12 is connected to a test reciprocating shaft 13, and a first force sensor 14 is arranged between the two; a crankshaft 15, which is rotatably arranged in the device housing and connected to a motor 31; a connecting rod, one end of which is connected to the connecting rod journal of the crankshaft 15, and the other end is connected to the slider 12; a sealing mounting seat 16, which is installed in the device housing, and second force sensors 17 are respectively arranged between its two sides and the device housing, the test reciprocating shaft 13 slides through the sealing mounting seat 16, and the seal to be tested is arranged between the test reciprocating shaft 13 and the sealing mounting seat 16.

[0026] Specifically, a slideway 11 is provided in the housing of the device, and a slider 12 is installed in the slideway 11 and can slide along it. The slider 12 is connected to the test reciprocating shaft 13, and a first force sensor 14 is provided therebetween for real-time monitoring and reflecting the axial friction value of the test reciprocating shaft 13 during the movement. The crankshaft 15 is rotatably arranged inside the housing of the device and driven to rotate by the motor 31. One end of the connecting rod is connected to the connecting rod journal (i.e., crank) of the crankshaft 15, and the other end is connected to the slider 12. When the motor 31 drives the crankshaft 15 to rotate, the rotational motion of the crankshaft 15 is converted into the linear reciprocating motion of the slider 12 along the slideway 11 through the connecting rod. This crank-connecting rod transmission mode simulates the actual working conditions of the emulsion plunger pump, making the test environment closer to the actual use scenario. It is worth noting that due to the characteristics of the crank-connecting rod mechanism, while the output slider 12 moves linearly, it will also be accompanied by a certain degree of radial runout second-order motion, which further enhances the authenticity and reliability of the test.

[0027] In addition, the seal mounting seat 16 is arranged in the housing of the device, and a second force sensor 17 is respectively arranged between the two sides and the housing of the device, which is used to monitor the pressure distribution of the seal mounting seat 16 during the test. The test reciprocating shaft 13 passes through the seal mounting seat 16, and the seal to be tested is located between the test reciprocating shaft 13 and the seal mounting seat 16 to provide a sealing effect. The above device can not only evaluate the performance of the seal under different working conditions, but also effectively avoid the problem of long-term high-power operation of the pump station in the traditional detection method, reduce the experimental cost, and improve the speed and accuracy of the test.

[0028] A reciprocating oil seal detection device according to the present invention, the device housing includes a transmission mechanism housing 21, a test shaft end cover 22, a guide housing 23 and a leakage liquid collection barrel 24. Among them, the crankshaft 15 is installed in the transmission mechanism housing 21, and at least one end of the crankshaft 15 extends out of the transmission mechanism housing 21 for connecting the motor 31. The test shaft end cover 22 is installed on the transmission mechanism housing 21, and the slideway 11 is detachably installed on the test shaft end cover 22. The guide housing 23 is detachably installed on the test shaft end cover 22, and the seal mounting seat 16 is detachably installed on the guide housing 23. The leakage liquid collection barrel 24 is installed on the guide housing 23 and sandwiches the seal mounting seat 16 in the middle. There is a space in the leakage liquid collection barrel 24 for testing the movement of the reciprocating shaft 13.

[0029] The device housing of the above embodiment has a modular and detachable device housing structure, including a transmission mechanism housing 21, a test shaft end cover 22, a guide housing 23 and a leakage liquid collection barrel 24. Specifically, the crankshaft 15 is installed inside the transmission mechanism housing 21, and at least one end extends out of the housing to connect the motor 31, so that the power transmission is direct and effective. The test shaft end cover 22 is installed on the transmission mechanism housing 21, and the slideway 11 is fixedly installed in the test shaft end cover 22 in a detachable manner, which is convenient for the maintenance and replacement of moving parts such as the slideway 11 and the slider 12. The guide housing 23 is also installed on the test shaft end cover 22 in a detachable manner, providing additional protection and support for the slider 12 and the link mechanism to ensure the accuracy of the linear reciprocating motion. The seal mounting seat 16 is also installed on one side of the guide housing 23 in a detachable manner, which is beneficial to quickly replace the seal to be tested and adjust the test parameters to meet different experimental requirements. In addition, the leakage liquid collection barrel 24 is cleverly installed below the guide housing 23, sandwiching the seal mounting seat 16 in the middle position. There is enough space inside it for the test reciprocating shaft 13 to move, and at the same time, it can effectively collect the leaked liquid. Through the modular device housing structure, the present invention provides a reciprocating oil seal detection device that is efficient, accurate and easy to operate.

[0030] Furthermore, in a reciprocating oil seal detection device according to the present invention, a liquid leakage hole 25 is provided at the bottom of the leakage liquid collection barrel 24. Specifically, the liquid leaked during the test can be effectively discharged and collected through the liquid leakage hole 25, avoiding the interference or influence on the test results that may be caused by the accumulation of the leaked liquid in the collection barrel, facilitating the subsequent accurate measurement and analysis of the leakage amount, and thus more accurately evaluating the performance of the seal. At the same time, by connecting an external collection device to the liquid leakage hole 25, the leaked liquid can be conveniently processed to keep the working environment clean.

[0031] A reciprocating oil seal detection device according to the present invention has its internal spaces of the transmission mechanism housing 21, the test shaft end cover 22, and the guide housing 23 filled with a hydraulic fluid. The sealing mounting seat 16 seals the hydraulic fluid in this internal space through the seal to be tested. A temperature sensor is provided on the inner side of the transmission mechanism housing 21 for real-time detection of the temperature of the hydraulic fluid. By using the hydraulic fluid to simulate the working environment of the seal under actual working conditions, the performance of the seal under real operating conditions can be evaluated more accurately. Specifically, the sealing mounting seat 16 closely cooperates with the seal to be tested to seal the hydraulic fluid in this internal space, ensuring that the hydraulic fluid does not leak into the external environment and at the same time ensuring the true performance of the seal during the test. A temperature sensor is provided on the inner side of the transmission mechanism housing 21 for real-time detection of the temperature of the hydraulic fluid. Temperature has a significant impact on the expansion coefficient, hardness, and lubrication effect of the sealing material, etc. Therefore, monitoring and controlling the temperature of the hydraulic fluid can provide more accurate and reliable test data. In addition, by monitoring the temperature of the hydraulic fluid, the influence of temperature changes on the frictional force, wear degree, and leakage amount of the seal can also be studied, providing a scientific basis for optimizing the seal design.

[0032] A reciprocating oil seal detection device according to the present invention has at least three second force sensors 17 respectively arranged on both sides of the sealing mounting seat 16; the at least three second force sensors 17 are evenly distributed in the circumferential direction of the sealing mounting seat 16. By means of multi-point measurement, the frictional force and other acting forces generated when the seal works can be captured more accurately, thereby improving the accuracy and reliability of the test results. Specifically, by using the method of evenly distributing multiple second force sensors 17 in the circumferential direction of the sealing mounting seat 16, the error caused by single-point measurement can be effectively reduced, and the force-bearing situation of the seal in the entire circumferential direction can be more comprehensively reflected. Compared with the measurement method of a single sensor, this method can better identify and analyze the frictional force of the minute high-frequency axial movement at the seal and the frictional force of the oil seal under test, and can also provide more detailed data on the overall performance of the seal. Compared with the traditional frictional force detection method, the arrangement method of the second force sensors 17 in this solution can, to a certain extent, eliminate the influence of inertial force under high-acceleration conditions. Combined with the way of installing the tension and compression sensors in the reciprocating piston and the rod under test, the two measurement means are carried out simultaneously and verified with each other, further enhancing the credibility of the test results.

[0033] For the reciprocating oil seal detection device according to the preferred embodiment of the present invention, the test method is specifically as follows: The motor 31 drives the crankshaft 15 to perform a rotational motion. One end of the connecting rod is connected to the crankshaft 15, and the other end is connected to the slider 12. The rotational motion of the crankshaft 15 is converted into a linear reciprocating motion of the slider 12 along the slideway 11 in the slideway 11. One end of the slider 12 is connected with a first force sensor 14 for real-time monitoring of the axial frictional force value of the test reciprocating shaft 13.

[0034] At least three second force sensors 17 are respectively arranged on both sides of the sealing mounting seat 16. These sensors are distributed in a 120°×3 pattern and are connected to the structures on both sides of the test block by threaded fixing. This multi-point measurement method can not only capture a more comprehensive force situation, but also effectively eliminate the influence of inertial force under high acceleration conditions. The two measurement methods (i.e., the first force sensor 14 and the second force sensor 17) are performed simultaneously and verified with each other, ensuring the accuracy of the measurement results.

[0035] The transmission mechanism housing 21 is equipped with a test shaft end cover 22, and the end cover is threadedly connected to the installation slideway 11 and the guide housing 23. One end of the seal mounting seat 16 is threadedly connected to the guide housing 23 through the second force sensor 17, and the other end is connected to the leakage liquid collection barrel 24. The leakage liquid collection barrel 24 is provided with a leakage hole 25 inside for collecting the leaked liquid and can be used to accurately measure the leakage amount. The built-in temperature sensor detects the oil temperature in real time to monitor the temperature change during the test.

[0036] The seal to be tested is installed on the seal mounting seat 16, and the motor 31 runs according to the set parameters, driving the crankshaft 15 to rotate, and then converting the rotational motion into the reciprocating motion of the test reciprocating shaft 13 through the connecting rod, so that the lubricating oil circulates in the seal. This process is used to observe the reliability, life, lubrication performance and wear temperature rise of the seal, which provides an important basis for optimizing sealing materials and technologies.

[0037] The reciprocating oil seal detection test bench provided by the present invention is described below. The reciprocating oil seal detection test bench described below and the reciprocating oil seal detection device described above can be referred to each other.

[0038] like Figure 1 As shown, the present invention also provides a reciprocating oil seal detection test bench, including: a test bench 30, on which the reciprocating oil seal detection device of the above embodiment is arranged; a motor 31, which is arranged on the test bench 30 and is connected to the reciprocating oil seal detection device. The reciprocating oil seal detection test bench realizes a comprehensive evaluation of the performance of the reciprocating oil seal through an integrated design, and not only provides a stable and reliable operating platform, but also ensures the accuracy and repeatability of the test process through high-precision sensors and intelligent control systems. The test bench 30 can also be provided with interfaces or openings for facilitating the adjustment and maintenance of various components, as well as a control panel for monitoring and controlling the entire system, so that the operator can easily adjust the test parameters, monitor the test data (such as temperature, friction, leakage, etc.) in real time, and quickly respond to any situation that may affect the test process.

[0039] According to a reciprocating oil seal testing bench of the present invention, an integrated assembly space is formed below the test table surface 30; the following are provided in the integrated assembly space: a hydraulic system, including a secondary oil tank 32 and a hydraulic pump that form an oil circuit with the reciprocating oil seal testing device; and an electric control cabinet 33, which is provided with an electric control system for controlling the motor 31 and the hydraulic system. Specifically, the hydraulic system provided in the integrated assembly space includes a secondary oil tank 32 and a hydraulic pump that form an oil circuit with the reciprocating oil seal testing device. The secondary oil tank 32 is used to store lubricating oil, and the hydraulic pump is used to transport the oil to each key part that needs lubrication in the test bench, such as the crankshaft 15 and other transmission parts, to ensure that these parts are fully lubricated during the test, and at the same time, it also helps to simulate the sealing working environment under actual working conditions. The electric control cabinet 33 contains an electric control system for controlling the motor 31 and the hydraulic system. The electric control system can not only accurately control the operating state of the motor 31 (such as speed, rotation direction, etc.) according to preset parameters, but also adjust the working pressure and flow rate of the hydraulic pump to ensure the stable operation of the entire system. Through the electric control system, the operator can easily adjust the test parameters, monitor various indicators (such as temperature, friction force, leakage amount, etc.) during the test in real time, and respond in a timely manner to possible problems.

[0040] As Figure 3 shown, according to a reciprocating oil seal testing bench of the present invention, the hydraulic system further includes: an oil return filter, arranged on the oil circuit, for filtering the oil flowing from the reciprocating oil seal testing device to the secondary oil tank 32; and / or, an air cooler, arranged on the oil circuit, for reducing the temperature of the oil passing through the air cooler; and / or, a heater, arranged in the secondary oil tank 32, for heating the oil in the secondary oil tank 32.

[0041] Among them, the oil return filter is arranged on the oil circuit and is used to filter the oil flowing back from the reciprocating oil seal testing device to the secondary oil tank 32, which can effectively remove impurities and fine particles in the oil and ensure the cleanliness of the oil.

[0042] Secondly, an air cooler can also be arranged on the oil circuit to reduce the temperature of the oil passing through the cooler. Considering that the temperature of the oil will rise after long-term operation, which will affect the performance of the sealing material, the air cooler can effectively control the oil temperature within a suitable range to avoid the influence of overheating on the test results. The cooled oil also flows into the secondary oil tank 32 to ensure that it maintains an appropriate working temperature when returning to the inside of the test bench.

[0043] In addition, in order to meet the specific requirements for the oil temperature under different test conditions, a heater can also be provided in the auxiliary fuel tank 32. This heater can adjust the temperature of the oil according to the test requirements, enabling the test to be carried out under different temperature conditions and more accurately simulating the actual working conditions. The heater and the oil return filter are installed together in the auxiliary fuel tank 32, which is not only convenient for centralized management and maintenance but also facilitates flexible adjustment of the oil temperature and cleanliness as needed.

[0044] Finally, as the main fuel tank of the hydraulic system, the crankshaft 15 tank of the reciprocating oil seal detection device (including the internal spaces of the transmission mechanism housing 21, the test shaft end cover 22, and the guide housing 23) can also be equipped with auxiliary devices such as an air filter, a liquid level gauge, and a temperature sensor. This not only helps monitor the oil condition in the auxiliary fuel tank 32 but also ensures the stable quality of the oil during the recycling process, further improving the accuracy and reliability of the test.

[0045] According to a reciprocating oil seal detection test bench of the present invention, a buffer pad 34 is provided above the test tabletop 30. The buffer pad 34 includes shock-absorbing rubber piers arranged at the bottom supports of the reciprocating oil seal detection device and a rubber pad for integrally supporting the reciprocating oil seal detection device. The vibration reduction design adopts a combination of shock-absorbing rubber piers and rubber pads. Among them, the shock-absorbing rubber piers are specially arranged at the four support positions of the test bench, effectively absorbing and reducing the vibration generated from the ground and equipment operation, improving the stability and accuracy during the test; while the rubber pad is used to integrally support the reciprocating oil seal detection device, further enhancing the vibration reduction effect of the entire system.

[0046] To deal with possible oil leakage problems, an oil collector is preferably provided above the test tabletop 30, located below the reciprocating oil seal detection device, for collecting the spilled oil.

[0047] A camera is preferably provided above the test tabletop 30, located on one side of the reciprocating oil seal detection device, for real-time monitoring of the working state of the device. This camera can monitor the working state of the device in real time, providing immediate visual feedback to the operator, ensuring the smooth progress of the test, and being able to quickly respond to abnormal situations when necessary.

[0048] Preferably, the main frame of the reciprocating oil seal detection test bench is built with channel steel. Multiple layers of sponge are added respectively at the channel steel grooves at the bottom of the test tabletop 30 to improve the noise reduction ability. At the same time, steel plates are welded between the channel steels, and multiple layers of sponge are laid on the steel plates to further enhance the noise reduction effect, ensuring that the entire test bench is in an optimized noise reduction environment. Through this design, adding multiple layers of sponge in the channel steel grooves and laying sponge on the welded steel plates between the channel steels can effectively absorb and isolate the vibration and noise generated during equipment operation, not only enhancing the stability and durability of the test bench but also significantly reducing the noise level.

[0049] A reciprocating oil seal detection test bench according to the present invention further includes: a protective cover 35, which is disposed above the test table surface 30, and a sound-absorbing sponge layer is provided on the inner side of the protective cover 35; a suspended console 36, which is disposed outside the protective cover 35 and is connected to the electric control cabinet 33 for human-computer interaction. Specifically, the protective cover 35 not only provides physical protection for the test bench, preventing external dust and other impurities from entering the test area and affecting the experimental results, but also effectively reduces the noise generated during operation through the sound-absorbing sponge layer, further optimizing the quietness and comfort of the working environment. The position design of the suspended console 36 facilitates the operator to conveniently adjust the test parameters, monitor the test process, and obtain real-time data feedback without directly contacting the internal components of the test bench, greatly improving the safety and convenience of operation. Through this console, the operator can easily achieve precise control and adjustment of multiple key parameters such as the rotation speed of the motor 31, the pressure of the hydraulic system, and the readings of the temperature sensors, thereby ensuring the accuracy and efficiency of the test process.

[0050] The reciprocating oil seal detection test bench and its detection device provided by the present invention significantly improve the efficiency and accuracy of the reciprocating seal detection of the mining piston pump in multiple aspects. First, in view of the characteristic that the mining piston pump is usually driven by a crank-link mechanism, the response speed of the traditional motor 31 or servo cylinder drive method is about between 0.8 m / s and 1 m / s, which is difficult to meet the test requirement of the average speed of 2 m / s of the mining piston pump. The present invention adopts a crank-link drive method, successfully realizing the test requirement of the same speed as the mining piston pump and ensuring that the test conditions are closer to the actual working conditions. Second, the traditional seal test method is limited by the design of the test device and can only be applied to the test of small-diameter shaft seals of conventional actuators, and cannot flexibly meet the requirements of different shaft diameters. In contrast, the present invention adopts an easily detachable design, making it simple and fast to change the test plan. Only by replacing the test block and the experimental rod can it meet the test requirements of seals with various shaft diameters. This flexibility greatly expands the application range of the equipment and improves the test efficiency. Finally, in order to adapt to the precise measurement under high-speed working conditions, the present invention designs a layout method of 6 second force sensors with two-sided sensors distributed at 120°×3. This method can not only effectively eliminate the influence of inertial force under high acceleration conditions, but also ensure that there is no large movement during the sensor measurement process, avoid deformation of the data line, thereby prolonging the service life of the sensor and ensuring the accuracy and reliability of the measurement data.

[0051] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or mode are included in at least one embodiment or mode of the embodiments of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or modes. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or modes described in this specification and the features of different embodiments or modes.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A reciprocating oil seal detection device, characterized in that, include: Device housing; A slideway is disposed in the housing of the device; A slider is slidably disposed in the slideway, the slider is connected to a test reciprocating shaft, and a first force sensor is disposed between the slider and the test reciprocating shaft; A crankshaft, rotatably disposed in the housing of the device and connected to the motor; A connecting rod, one end of which is connected to the connecting rod journal of the crankshaft, and the other end of which is connected to the slider; A sealing mounting seat is installed in the device housing, and second force sensors are respectively arranged between the two sides of the sealing mounting seat and the device housing. The test reciprocating shaft slides through the sealing mounting seat, and the seal to be tested is arranged between the test reciprocating shaft and the sealing mounting seat.

2. The reciprocating oil seal detection device according to claim 1, wherein The device housing comprises: a transmission mechanism housing, the crankshaft being mounted on the transmission mechanism housing, and at least one end of the crankshaft extending out of the transmission mechanism housing for connecting to the motor; A test shaft end cover is mounted on the transmission mechanism housing, and the slideway is detachably mounted on the test shaft end cover; A guide housing is detachably mounted on the test shaft end cover, and the sealing mounting seat is detachably mounted on the guide housing; A leakage liquid collection barrel is installed on the guide housing and sandwiches the sealing mounting seat in the middle. The leakage liquid collection barrel has a space for the movement of the test reciprocating shaft.

3. The reciprocating oil seal detection device according to claim 2, characterized in that The bottom of the leaked liquid collection barrel is provided with a liquid leakage hole.

4. The reciprocating oil seal detection device according to claim 2, wherein The inner spaces of the transmission mechanism housing, the test shaft end cover and the guide housing are filled with oil, and the sealing mounting seat seals the oil in the inner space through the seal to be tested; A temperature sensor is arranged inside the transmission mechanism housing for detecting the temperature of the oil in real time.

5. The reciprocating oil seal detection device according to any one of claims 1 to 4, characterized in that At least three of the second force sensors are respectively arranged on both sides of the sealing mounting seat; The at least three second force sensors are evenly distributed in the circumferential direction of the sealing mounting seat.

6. A reciprocating oil seal detection test bench, characterized in that, include: A test table, on which the reciprocating oil seal detection device according to any one of claims 1 to 5 is arranged; The motor is arranged on the test table and is drivingly connected to the reciprocating oil seal detection device.

7. The reciprocating oil seal detection test bench according to claim 6, characterized in that, An integrated assembly space is formed below the test table; The integrated assembly space is provided with: A hydraulic system, comprising a secondary oil tank and a hydraulic pump forming an oil circuit with the reciprocating oil seal detection device; The electric control cabinet is provided with an electric control system for controlling the motor and the hydraulic system.

8. The reciprocating oil seal detection test bench according to claim 7, characterized in that, The hydraulic system further comprises: An oil return filter, arranged on the oil circuit, for filtering the oil flowing from the reciprocating oil seal detection device to the auxiliary oil tank; and / or, an air cooler, disposed on the oil circuit, for reducing the temperature of the oil passing through the air cooler; And / or, a heater is provided in the auxiliary oil tank and is used for heating the oil in the auxiliary oil tank.

9. The reciprocating oil seal detection test bench according to any one of claims 6 to 8, characterized in that, The test table is provided with: A buffer pad, the buffer pad comprising a shock-absorbing rubber pier arranged at a bottom support of the reciprocating oil seal detection device, and a rubber pad that integrally supports the reciprocating oil seal detection device; and / or, an oil collector, located below the reciprocating oil seal detection device, for collecting overflowed oil; And / or, a camera is located on one side of the reciprocating oil seal detection device for real-time monitoring of the working state of the device.

10. The reciprocating oil seal detection test bench according to claim 7 or 8, characterized in that, It further includes: A protective cover is disposed above the test tabletop, and a sound-absorbing sponge layer is provided on the inner side of the protective cover; A suspended console is disposed outside the protective cover and connected to the electric control cabinet for human-machine interaction.

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