Pipeline connection structure service life test system and use method and application thereof

Abstract

The invention belongs to the technical field of pipeline connection structure testing, and particularly discloses a pipeline connection structure service life testing system and a using method and application thereof.The testing system comprises an installation assembly, a testing station, a power assembly, a fluid power station and a console; the mounting assembly is fixedly arranged and is used for supporting the test station and the power assembly; the test station is detachably arranged on the mounting assembly and is used for mounting a to-be-tested pipeline connecting structure; the power assembly is arranged on the mounting assembly and comprises a driving part and a driven part connected with the test station, and the driving part is matched with the driven part to drive parts of the test station to perform bidirectional rotary motion; the fluid power station is connected with the pipeline in the test station and is used for providing fluid for simulating operation pressure for the pipeline connected to the to-be-tested pipeline connecting structure; the console is in communication connection with the power assembly and the fluid power station and used for controlling the operation state of the power assembly and the output pressure of the fluid power station and recording operation data in the testing process.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of pipeline connection structure testing, more specifically, relates to a pipeline connection structure life testing system and its use method and application. BACKGROUND

[0002] With the rapid development of the automobile industry, especially the continuous progress of new energy automobile manufacturing process, large-scale integrated die castings gradually become an important part of the vehicle body structure. In order to meet the high-precision machining needs of such parts, the tilt head as a key functional component is widely introduced into the automobile automatic processing production line. The tilt head greatly expands the processing range and flexibility of the traditional spindle by introducing the rotational freedom of A-axis and C-axis, and improves the processing efficiency and the adaptability of complex curved surfaces. However, under the special working conditions of the automobile industry, the application of the tilt head faces a series of technical challenges, especially in the design and service life of its pipeline connection structure. In actual application, since the tilt head needs to perform high-frequency and continuous ±360° rotary motion, the pipelines such as hydraulic, pneumatic, cooling, lubrication and electrical lines that are matched with it must have good flexibility, durability and fatigue resistance. In addition, the automobile production line is usually in a high-temperature, high-humidity and dusty environment, and requires the equipment to run continuously for a long time, which puts higher reliability requirements on the pipeline connection structure of the tilt head. Once the pipeline fails due to fatigue fracture or improper installation, it will not only cause the production line to stop, affecting the overall operation rate, but also may cause equipment damage and even safety accidents, causing huge economic losses. Therefore, how to design a high-efficiency and long-life tilt head pipeline connection structure suitable for the working conditions of automobile automatic production line has become a technical problem to be solved in the current industry.

[0003] In view of the above problems, researchers and technical personnel in the relevant fields at home and abroad have proposed a variety of solutions to the tilt head pipeline connection structure. For example, some manufacturers use the traditional fixed wiring method to fix the pipeline on the external support of the tilt head and achieve flexible connection through the hose joint; some other solutions try to use rotary joint structure to keep the pipeline relatively stationary during the rotation of the tilt head, thereby reducing the torsional stress of the pipeline. In addition, some enterprises introduce slip ring technology in the structure design for transmitting electrical signals and fluid media to avoid cable winding problems. In the fields of aerospace, medical equipment and mold manufacturing, the tilt head has been widely used. Although these industries have very high requirements for processing accuracy, the equipment runs at a low frequency and the working environment is relatively stable, so the existing pipeline connection structure can still meet the basic needs in these scenarios.

[0004] However, when these pipeline connection structures are directly transplanted to the automatic production line of the automobile industry, there are still many deficiencies, such as: the existing technology generally does not fully consider the influence of high frequency and continuous rotation on the fatigue life of the pipeline, which leads to the pipeline being prone to premature failure due to long-term repeated bending and stretching; secondly, most schemes lack effective protection measures for high temperature, vibration and other harsh environmental factors, so that the pipeline is prone to aging, leakage and other problems during use. More importantly, there is currently a lack of a professional life test system, which cannot comprehensively and accurately evaluate the performance and life of these connection methods under the actual automobile automatic machining production line working conditions, making it difficult to effectively screen and optimize different manufacturers' connection methods, and it is difficult to find a swing head pipeline connection solution that meets the development needs of the automobile industry, which limits the application of the swing head in the automobile automatic machining production line, and further aggravates the uncertainty risk in the field application. SUMMARY

[0005] In view of the above defects or improvement needs of the prior art, the present application provides a pipeline connection structure life test system and its use method and application, which has the advantages of reasonable structure, perfect function, convenient operation and scientific evaluation. Through the cooperative matching of the five core parts including the installation assembly, the test station, the power assembly, the fluid power station and the console, the actual working state of the pipeline connection structure, especially the swing head, under the high frequency and continuous operation working condition can be effectively simulated. Compared with the number of rotations, the actual wear of the pipeline can be intuitively reflected, which helps to identify the weak links in the existing pipeline connection structure, thereby providing strong data support for optimization design.

[0006] In order to achieve the above purpose, the present application provides a pipeline connection structure life test system, which comprises: an installation assembly, a test station, a power assembly, a fluid power station and a console. The installation assembly is fixedly arranged and used for supporting the test station and the power assembly. The test station is detachably arranged on the installation assembly and used for installing the pipeline connection structure to be tested. The power assembly is arranged on the installation assembly and comprises a driving member and a driven member connected with the test station, and the driving member cooperates with the driven member to drive the components of the test station to perform bidirectional rotation. The fluid power station is connected with the pipeline in the test station and used for providing fluid with simulated working pressure to the pipeline connected to the pipeline connection structure to be tested. The console is in communication connection with the power assembly and the fluid power station, and is used for controlling the operating state of the power assembly and the output pressure of the fluid power station, and recording the operating data in the test process.

[0007] Further, the mounting assembly comprises a first mounting frame, a first mounting plate, a second mounting plate, a first support frame, a second mounting frame, a third mounting plate, an oil blocking groove, an oil receiving disc and a first support seat; The first mounting frame is provided with a plurality of first mounting pads corresponding one by one at the upper end, and a plurality of mounting holes are arranged on the first mounting pads; The first mounting plate is detachably connected with the first mounting frame through connecting bolts and two first mounting pads corresponding one by one, and is arranged between a plurality of second mounting plates and located on the same horizontal plane; The second mounting plate is provided with a plurality of waist-shaped holes corresponding one by one, and is detachably connected with the first mounting frame through the waist-shaped holes and corresponding first mounting pads, and the relative position of the second mounting plate and the first mounting frame is finely adjusted through the waist-shaped holes; The first support frame is provided with a plurality of second mounting pads at the bottom end and a plurality of third mounting pads at the upper end, and is detachably connected with the first mounting frame through the second mounting pads and corresponding first mounting pads; The second mounting frame is provided with a plurality of fourth mounting pads at the bottom end and a plurality of fifth mounting pads at the upper end, and is detachably connected with the first support frame through the fourth mounting pads and corresponding third mounting pads; The third mounting plate is provided with a plurality of waist-shaped holes corresponding one by one, and is detachably connected with the second mounting frame through the waist-shaped holes and corresponding fifth mounting pads, and the relative position of the third mounting plate and the second mounting frame is finely adjusted through the waist-shaped holes; The oil blocking groove is matched with the second mounting frame, and is reversely buckled on the upper end of the second mounting frame; The oil receiving disc is arranged below the oil blocking groove, the inner side of the bottom plate is fixedly connected with the first mounting frame through a plurality of supporting pads, and the cross-sectional shape and size of the oil receiving disc is larger than that of the oil blocking groove; A plurality of first support seats are arranged one by one on the upper ends of the first mounting plate and the second mounting plate, and one side of each first support seat is provided with two first support plates, and the two first support plates are arranged horizontally and have bearing mounting holes arranged coaxially.

[0008] Further, the test station comprises a rotating disc, a pipeline fixing disc, a height adjusting member and an anti-wear bucket; The bottom end of the rotating disc is connected with the driven part, and a pipeline connection structure to be tested is arranged on the rotating disc; The pipeline fixing disc is connected with the height adjusting member, and is provided with a pipeline fixing structure for fixing the pipeline from the fluid power station; The height adjusting member is arranged on the upper end of the third mounting plate, and adjusts the looseness of the pipeline connected between the pipeline fixing disc and the rotating disc by adjusting the relative height between the pipeline fixing disc and the rotating disc. The wear-resistant barrel is mainly made of transparent wear-resistant material, is arranged above the rotating disc and connected with the third mounting plate, and has an open bottom surrounding the movable area of the pipeline on the rotating disc.

[0009] Further, the driving member comprises a speed reducer and a rotary driving member. The speed reducer is arranged at the bottom end of the first mounting plate, and one end of the output shaft of the speed reducer is connected with the rotating disc above the first mounting plate and the two first support plates to drive the rotating disc to rotate. The rotary driving member is arranged on one side of the speed reducer, and the output shaft of the rotary driving member is connected with the input shaft of the speed reducer. The output shaft of the speed reducer is rotatably connected with the two first support plates through bearings, and a driving wheel is arranged on the part of the output shaft between the two first support plates. The driven member comprises a driven shaft and a driven wheel. The driven shaft is rotatably connected with the two first support plates on one side of the first support seat on the second mounting plate through bearings, and the upper end of the driven shaft is connected with the rotating disc of the corresponding test station. The driven wheel is at least one, and is sleeved on the part of the driven shaft between the two corresponding first support plates. The driving wheel is connected with the driven wheel through a belt, and the diameter of the driving wheel is the same as that of the driven wheel.

[0010] Further, the control console comprises a counting sensor, a gas pressure sensor and a liquid pressure sensor. The counting sensor is arranged on one side of the rotating disc through a plurality of second support seats arranged on the first mounting plate and the second mounting plate, and the corresponding rotating disc is provided with a corresponding response part, and the rotating disc is recorded by the counting sensor and the corresponding response part. The gas pressure sensor and the liquid pressure sensor are arranged on the fluid power station and connected with the corresponding gas pipeline and liquid pipeline respectively, and are used for detecting the pressure of the corresponding fluid pipeline in the test station.

[0011] Further, the control console further comprises an electronic control unit, and the electronic control unit is configured to: control the power assembly to drive the test station to rotate in a set mode; adjust the fluid pressure output by the fluid power station; Acquiring and recording test data from the counting sensor, the gas pressure sensor, and the liquid pressure sensor.

[0012] The second aspect of the present application provides a method for using a pipeline connection structure life test system, which is implemented by using the test system described above, and includes the following steps: S1: arranging at least one test station on the installation assembly, arranging the pipeline connection structures to be tested on the respective turntables, and connecting the pipelines from the fluid power station to the pipeline connection structures on the turntables through the wear-resistant barrels and the pipeline fixing structures on the pipeline fixing disc; S2: after the pipeline assembly is completed and the test system is debugged and ensured to be free of leakage, starting the fluid power station to provide a set test pressure to the connected pipelines; S3: setting test parameters including rotation speed and rotation mode through the console, starting the rotation driving member to drive the turntable to perform a set bidirectional continuous rotation movement, and recording the rotation number of the turntable, the running time, and the pipeline pressure data through the console; S4: continuously monitoring the pressure data during the test; when an abnormal pressure data is monitored, stopping the fluid power station to stop supplying pressure and controlling the rotation driving member to stop running; S5: repeating steps S1 to S4 to perform multiple tests.

[0013] Further, in step S4, when an abnormal pressure data is monitored, recording the total rotation number of the turntable at this time as the failure cycle number of the pipeline connection structure; the failure cycle number is used to evaluate the service life of the pipeline connection structure under the simulated working condition.

[0014] Further, the calculation method of the service life of the pipeline connection structure is as follows: ; In the formula, is the service life of the pipeline (unit: y); is the total rotation number of the turntable (unit: r); is the rotation speed of the turntable (unit: r / min); is the equipment operation rate; is the daily production shift (unit: times / d); is the working time per shift (unit: h / time); is the working condition coefficient; is the conversion coefficient (d / y); is the conversion coefficient (min / h).

[0015] The third aspect of the present application provides a pipeline connection structure life test system, which is used for testing the life of a pipeline connection structure working in a rotating working condition.

[0016] Overall, compared with the prior art, the above technical solutions conceived by the present application can achieve the following beneficial effects: 1. The test system of the present application can effectively simulate the actual working state of a pipeline connection structure, especially a swing head, under high-frequency and continuous operation conditions, through the coordinated cooperation of the five core parts including the installation assembly, the test station, the power assembly, the fluid power station and the control console. Compared with the number of revolutions and the actual wear of the pipeline, the performance difference of different pipeline connection forms in long-term operation can be intuitively reflected, which helps to identify the weak links in the existing pipeline connection structure, thereby providing strong data support for optimization design.

[0017] 2. The test system of the present application realizes detachable connection through the installation of multiple installation pads, installation holes and waist-shaped holes between components, and is supplemented by bolt fastening. This not only ensures the stability and carrying capacity of the overall structure, but also takes into account the convenience of on-site assembly and the operability of later maintenance. At the same time, the detachable connection of multiple components and the design of multiple waist-shaped holes make the installation process more convenient and efficient, allowing for quick adjustment of the relative positions of the components according to actual needs, ensuring installation accuracy, and enhancing the stability and reliability of the system, providing a solid foundation for subsequent testing work. It is suitable for various complex pipeline connection structure test scenarios, effectively improving the accuracy and efficiency of testing.

[0018] 3. The test system of the present application can be compatible with pipeline connection structures of various types, different materials and size specifications through the rotary disc and the pipeline fixing disc, and can improve the adaptability of the test system. At the same time, through accurate control of the pre-tightening state of the pipeline, it helps to identify the fatigue characteristics of different connection methods under dynamic load, providing data support for optimizing pipeline layout and improving connection reliability.

[0019] 4. The test system of the present application can efficiently drive the rotary discs in multiple test stations to realize continuous rotation through the cooperation of the driving member and multiple driven members, thereby realistically simulating the dynamic stress state of the swing head pipeline connection structure in the automotive production line under high-frequency and large-angle rotation. At the same time, this structure design not only has high transmission accuracy and carrying capacity, but also effectively meets the testing needs of long-term continuous operation, ensuring the durability and consistency of system operation. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 Figure 1 is a structural schematic diagram of the main part of the test system of the present application; Figure 2 Structure diagram of the power assembly and the mounting assembly of the embodiment 1 of the present application; Figure 3 Front view of the power assembly and the mounting assembly of the embodiment 1 of the present application; Figure 4 Structure diagram of the first support frame and the second mounting frame of the embodiment 1 of the present application; Figure 5 Structure diagram of the control console of the embodiment 1 of the present application; Figure 6 Step flow diagram of the use method of the test system of the embodiment 2 of the present application; Figure 7 Structure diagram of the control flow of the test system of the embodiment 2 of the present application; Figure 8 Operation flow chart of the test system of the embodiment 2 of the present application.

[0021] In all the drawings, the same reference signs represent the same technical features, specifically: 1-mounting assembly, 11-first mounting frame, 11a-first mounting pad, 12-first mounting plate, 12a-baffle, 13-second mounting plate, 14-first support frame, 14a-second mounting pad, 14b-third mounting pad, 15-second mounting frame, 15a-fourth mounting pad, 15b-fifth mounting pad, 16-third mounting plate, 17-oil baffle, 18-oil receiving disc, 19-first support seat, 19a-first support plate, 2-test station, 21-rotating disc, 22-pipeline fixing disc, 23-height adjusting member, 24-wear-preventing barrel, 3-power assembly, 31-driving member, 311-reducer, 311a-driving wheel, 312-rotary driving member, 32-driven member, 321-driven shaft, 322-driven wheel, 4-fluid power station, 5-control console, 51-counting sensor, 51a-second support seat, 51b-response component, 52-electronic control unit, 521-processor, 522-communication bus, 523-user interface, 524-network interface, 525-memory, 526-timer. DETAILED DESCRIPTION

[0022] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as they do not conflict with each other.

[0023] Embodiment 1 As Figures 1 to 5As shown, the pipeline connection structure life test system of the embodiment 1 of the present application comprises a mounting assembly 1, a test station 2, a power assembly 3, a fluid power station 4 and a control console 5. The mounting assembly 1 is fixedly arranged for supporting the test station 2 and the power assembly 3. The test station 2 is detachably arranged on the mounting assembly 1 for mounting the pipeline connection structure to be tested. The power assembly 3 is arranged on the mounting assembly 1 and comprises a driving member 31 and a driven member 32 connected with the test station 2. The driving member 31 cooperates with the driven member 32 to drive the components of the test station 2 to perform bidirectional rotary motion. The fluid power station 4 is connected with the pipeline in the test station 2 for providing fluid with simulated operating pressure to the pipeline connected with the pipeline connection structure to be tested. The control console 5 is communicatively connected with the power assembly 3 and the fluid power station 4 for controlling the operating state of the power assembly 3 and the output pressure of the fluid power station 4 and recording the operating data in the test process. The test system of the present application has the advantages of reasonable structure, perfect function, convenient operation and scientific evaluation. Through the cooperative operation of the five core parts, i.e. the mounting assembly 1, the test station 2, the power assembly 3, the fluid power station 4 and the control console 5, the pipeline connection structure, especially the swing head, can be effectively simulated under the actual working condition of high frequency and continuous operation. Compared with the rotary times, the actual pipeline wear condition can directly reflect the performance difference of different pipeline connection forms in long-term operation, which helps to identify the weak links in the existing pipeline connection structure, thereby providing strong data support for the optimization design.

[0024] It should be noted that the fluid power station 4 is a common hydraulic and gas pumping device in the prior art for providing stable hydraulic and gas pressure. In other embodiments, other types of devices can also be used, which are not limited here.

[0025] As shown in the embodiment 1 of the present application, the test station 2 comprises a test base 21, a test fixture 22 and a test fixture base 23. The test fixture 22 is arranged on the test base 21 and the test fixture base 23 is arranged on the test fixture 22. The test fixture 22 is used for mounting the pipeline connection structure to be tested and the test fixture base 23 is used for mounting the test fixture 22. The test fixture 22 is detachably arranged on the test base 21. The test fixture 22 is used for mounting the pipeline connection structure to be tested. The test fixture base 23 is arranged on the test fixture 22 and is used for mounting the test fixture 22. Figures 1 to 4As shown, the mounting assembly 1 comprises a first mounting frame 11, a first mounting plate 12, a second mounting plate 13, a first support frame 14, a second mounting frame 15, and a third mounting plate 16. The first mounting frame 11 is provided with a plurality of first mounting pads 11a corresponding to each other at the upper end, and a plurality of mounting holes are arranged on the first mounting pads 11a. The first mounting plate 12 is detachably connected with the first mounting frame 11 through connecting bolts and two corresponding first mounting pads 11a, and is arranged between a plurality of second mounting plates 13 and located on the same horizontal plane. The second mounting plate 13 is provided with a plurality of corresponding waist-shaped holes, which are detachably connected with the first mounting frame 11 through the waist-shaped holes and the corresponding first mounting pads 11a, and the relative position of the second mounting plate 13 and the first mounting frame 11 is finely adjusted through the waist-shaped holes. The first support frame 14 is provided with a plurality of second mounting pads 14a at the bottom end and a plurality of third mounting pads 14b at the upper end, which are detachably connected with the first mounting frame 11 through the second mounting pads 14a and the corresponding first mounting pads 11a. The second mounting frame 15 is provided with a plurality of fourth mounting pads 15a at the bottom end and a plurality of fifth mounting pads 15b at the upper end, which are detachably connected with the first support frame 14 through the fourth mounting pads 15a and the corresponding third mounting pads 14b. The third mounting plate 16 is provided with a plurality of corresponding waist-shaped holes, which are detachably connected with the second mounting frame 15 through the waist-shaped holes and the corresponding fifth mounting pads 15b, and the relative position of the third mounting plate 16 and the second mounting frame 15 is finely adjusted through the waist-shaped holes.

[0026] It can be understood that through the above design, the detachable connection between the components is realized through the arrangement of a plurality of mounting pads, mounting holes and waist-shaped holes, and is assisted by bolt fastening, which not only ensures the stability and carrying capacity of the overall structure, but also considers the convenience of on-site assembly and the operability of later maintenance. At the same time, the detachable connection of multiple components and the design of multiple waist-shaped holes make the installation process more convenient and efficient, and the relative position of each component can be quickly adjusted according to actual needs to ensure installation accuracy, while enhancing the stability and reliability of the system, providing a solid foundation for subsequent test work, and being suitable for various complex pipeline connection structure test scenarios, effectively improving the accuracy and efficiency of the test.

[0027] In optional embodiments, the first mounting frame 11, the first support frame 14, and the second mounting frame 15 are all square frames, which are convenient for processing and reduce the overall space occupied by the device.

[0028] It can be understood that a plurality of mounting holes are arranged on the second mounting pads 14a, the third mounting pads 14b, the fourth mounting pads 15a, and the fifth mounting pads 15b, which are used for convenient connection with other components.

[0029] Further, the mounting assembly 1 further comprises an oil baffle 17 and an oil receiving tray 18; the oil baffle 17 is matched with the second mounting frame 15 and is reversely buckled on the upper end of the second mounting frame 15; the oil receiving tray 18 is arranged below the oil baffle 17, the inner side of the bottom plate thereof is fixedly connected with the first mounting frame 11 through a plurality of supporting pads, and the cross-sectional shape and size of the oil receiving tray 18 are larger than those of the oil baffle 17. It can be understood that by reversely buckling the oil baffle 17 on the upper end of the second mounting frame 15, the liquid splashing caused by the pipeline rupture or interface leakage during the test can be effectively blocked, preventing the oil from spreading to the surrounding equipment or working area, thereby avoiding the safety risks such as equipment pollution, slipping hazards and secondary damage, etc. At the same time, by arranging the oil receiving tray 18 below the oil baffle 17, it is ensured that the liquid dripping or leaking from the lower edge of the oil baffle 17 can be completely received, the leakage liquid can be effectively collected and recycled, which is helpful to keep the test environment clean and facilitate the subsequent treatment and reuse of the oil, meeting the requirements of green manufacturing and environmental protection.

[0030] In an optional embodiment, the oil receiving tray 18 and the fluid power station 4 are provided with a hydraulic oil recovery and filtration device, one end of which is connected with the oil receiving tray 18 through a pipeline and the other end is connected with the fluid power station 4, so as to realize the recycling of the leaked hydraulic oil.

[0031] Further, the mounting assembly 1 further comprises a first supporting seat 19, a plurality of first supporting seats 19 are respectively arranged on the upper ends of the first mounting plate 12 and the second mounting plate 13 and correspond to each other, and one side of each first supporting seat 19 is provided with two first supporting plates 19a, the two first supporting plates 19a are arranged horizontally and have coaxially arranged bearing mounting holes, which are used to stably connect the power assembly 2 and ensure smooth force transmission.

[0032] As shown in Figures 1 to 4 The test station 2 comprises a turntable 21, a pipeline fixing disc 22 and a height adjusting member 23; the bottom end of the turntable 21 is connected with the driven member 32, and the turntable 21 is used to mount the pipeline connection structure to be tested; the pipeline fixing disc 22 is connected with the height adjusting member 23, and the pipeline fixing disc 22 is provided with a pipeline fixing structure for fixing the pipeline from the fluid power station 4; the height adjusting member 23 is arranged on the upper end of the third mounting plate 16, and the height adjusting member 23 adjusts the looseness of the pipeline connected between the pipeline fixing disc 22 and the turntable 21 by adjusting the relative height between the pipeline fixing disc 22 and the turntable 21.

[0033] It can be understood that the rotary table 21 and the pipeline fixing disc 22 can be compatible with various types, different materials and size specifications of pipeline connection structures, and improve the adaptability of the test system. At the same time, through the accurate control of the pre-tightening state of the pipeline, the fatigue characteristics of different connection modes under dynamic load are helped to identify, which provides data support for optimizing pipeline layout and improving connection reliability.

[0034] In an optional embodiment, the number of test stations 2 is at most four, which ensures that the power meets the test conditions, increases the number of pipeline connection structures tested, and improves the test efficiency.

[0035] Further, the test station 2 further comprises an anti-abrasion barrel 24, which is mainly made of transparent wear-resistant material, is arranged above the rotary table 21 and is connected with the third mounting plate 16, and the bottom opening thereof surrounds the pipeline active area on the rotary table 21, so as to further prevent oil from spreading to the surrounding equipment or working area, and at the same time, avoid the pipeline from being entangled or interfering with other components, thereby improving the operation safety. In addition, the transparent property of the anti-abrasion barrel 24 enables the operator to directly observe the actual wear condition of the pipeline and take photos for record, which is used for subsequent wear condition analysis and targeted structure optimization. It can be understood that the transparent wear-resistant material can be acrylic material, and in other embodiments, other types of materials can also be used, which are not specifically limited here.

[0036] It should be noted that in the present embodiment, the simulated pipeline joint structure can be a pipeline connection structure in the prior art, such as a swing angle head structure, and it includes but is not limited to a rotary joint for connecting a liquid pipeline, a rotary structure for connecting a gas pipeline, and a cable clamp for connecting a fixed cable. The pipeline fixing structure is a pipeline fixing device in the prior art, and it includes but is not limited to a fluid distributor for distributing and conveying fluid (gas, liquid), a quick plug pipe joint for connecting a gas pipeline, and a distribution block for connecting a fixed cable. The fluid distributor can also be used to divide one fluid into multiple fluids. In other embodiments, other types of pipeline connection structures and pipeline fixing structures can also be used to simulate the pipeline connection condition under formal rotation condition, which are not specifically limited here.

[0037] As Figures 1 to 4As shown, the driving member 31 comprises a speed reducer 311 and a rotary driving member 312; the speed reducer 311 is arranged at the bottom end of the first mounting plate 12, and one end of the output shaft of the speed reducer 311 penetrates the first mounting plate 12 and the two first support plates 19a above the rotary disc 21 in sequence and is connected to the rotary disc 21 to drive the rotary disc 21 to rotate; the rotary driving member 312 is arranged at one side of the speed reducer 311, and the output shaft of the rotary driving member 312 is connected with the input shaft of the speed reducer 311. It can be understood that the output shaft of the speed reducer 311 penetrates through a plurality of support structures and is directly connected with the rotary disc 21, which ensures the coaxiality and stability of power transmission, and at the same time, the rotary driving member 312 is fixed at one side of the speed reducer 311, and the power is stably transmitted to the input end of the speed reducer through the rigid connection mode, forming continuous and efficient torque output.

[0038] It should be noted that the rotary driving member 312 is a device commonly used in the prior art to generate torque for driving, such as a motor, and in other embodiments, other types of devices can also be used, which are not limited here.

[0039] Further, the output shaft of the speed reducer 311 is rotatably connected with the two first support plates 19a through bearings, and a part of the output shaft between the two first support plates 19a is provided with a driving wheel 311a for stable power transmission. Preferably, the number of driving wheels 311a is two, which ensures the stability of power output.

[0040] The driven member 32 comprises a driven shaft 321 and a driven wheel 322; the driven shaft 321 is rotatably connected with the two first support plates 19a on one side of the first support seat 19 on the second mounting plate 13 through bearings, and the upper end of the driven shaft 321 is connected with the rotary disc 21 of the corresponding test station 2; the driven wheel 322 is at least one, which is sleeved on the part of the driven shaft 321 between the two corresponding first support plates 19a.

[0041] Further, the driving wheel 311a is connected with the driven wheel 322 through a belt, and the diameter of the driving wheel 311a is the same as that of the driven wheel 322, which ensures that the angles of rotation of each test station 2 during the test process are the same (whether forward rotation or reverse rotation).

[0042] It can be understood that when the test station 2 is four, one of the driven shafts 321 is sleeved with two driven wheels 322, of which one is connected with the driving wheel 311a through the belt, and the other is connected with the driven wheel 322 corresponding to the adjacent test station 2. At this time, the two driving wheels 311a on the driving member 31 are connected with the driven wheels 322 on the driven shafts 321 connected with the adjacent two test stations 2, so that the four test stations 2 simultaneously perform the service life test of the pipeline connection structure under the driving of the rotary driving member 312.

[0043] In an optional embodiment, one side of the first mounting plate 12 is provided with a baffle 12a which is U-shaped as a whole and is arranged above the speed reducer 311 and the rotary driving member 312, so as to avoid that the pipeline leakage liquid pollutes or even damages the driving member 31, thereby improving the overall safety of the device.

[0044] It can be understood that through the above design, the cooperation of the driving member 31 and the plurality of driven members 32 can efficiently drive the rotating disc in the plurality of test stations 2 to realize continuous rotary motion, so as to truly simulate the dynamic stress state of the swing head pipeline connection structure in the automobile automatic production line under high frequency and large angle rotation. At the same time, this structure design not only has high transmission precision and bearing capacity, but also can effectively adapt to the test demand of long time continuous operation, thereby guaranteeing the durability and consistency of system operation.

[0045] As shown in Figure 5 The control console 5 includes a counting sensor 51, a gas pressure sensor and a liquid pressure sensor. The counting sensor 51 is arranged on one side of the rotating disc 21 through a plurality of second support seats 51a arranged on the first mounting plate 12 and the second mounting plate 13, and a corresponding response component 51b is arranged on the rotating disc 21 corresponding to the counting sensor 51, and the rotating disc 21 is recorded by the counting sensor 51 and the response component 51b. The number of revolutions; the gas pressure sensor and the liquid pressure sensor are arranged on the fluid power station 4 and are connected with the corresponding gas pipeline and liquid pipeline (not shown in the figure), respectively, for detecting the pressure of the corresponding fluid pipeline in the test station 2.

[0046] It should be noted that the counting sensor 51, the gas pressure sensor and the liquid pressure sensor are all common sensors in the prior art. For example, the counting sensor 51 can be a proximity switch, the response component 51b is a screw, and the counting of the response component 51b is increased by one each time. The gas pressure sensor is a compressed air sensor, and the liquid pressure sensor is an oil pressure sensor. In other embodiments, other types of devices can also be used, which are not limited here.

[0047] It can be understood that, since the driving wheel 311a and the driven wheel 322 have the same radius of rotation and are driven by a belt, the number of rotations of each turntable 21 is the same and can be counted by one counting sensor 51.

[0048] It can be understood that, by arranging the gas pressure sensor and the liquid pressure sensor in the fluid power station 4 instead of in the test station 2, reading can be facilitated and the risk of damage due to oil pollution after a burst pipe can be avoided.

[0049] It should be noted that the control console 5 further comprises an electronic control unit 52, which is in communication connection with the rotary drive 312, the fluid power station 4, the counting sensor 51, the gas pressure sensor and the liquid pressure sensor, respectively. The electronic control unit 52 is configured to control the power assembly 3 to drive the test station 2 to rotate in a set mode, to adjust the fluid pressure output by the fluid power station 4, and to acquire and record test data from the counting sensor 51, the gas pressure sensor and the liquid pressure sensor. It can be understood that the electronic control unit 52 at least comprises a memory, a processor and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the test of the service life of the pipeline connection structure of the test station 2 in the test system in the embodiment is realized, and the test system is suitable for simultaneously performing the measurement operation of multiple sets of the installation assembly 1 and the corresponding test station 2, so as to realize the modular expansion of the test station 2, and in the test process, without interfering with the test of other pipeline connection structures, the complete test station 2 can be added at any time and quickly and conveniently to perform the test operation of a new pipeline connection structure, so that the work efficiency is significantly improved.

[0050] Further, the electronic control unit 52 in the embodiment can include a processor 521, a network interface 524 and a memory 525, and can further include a user interface 523 and at least one communication bus 522. The communication bus 522 is used to realize the connection and communication among the components. The user interface 523 can include a display, a keyboard, and can further include a standard wired interface and a wireless interface. The network interface 524 can optionally include a standard wired interface and a wireless interface (such as a WI-FI interface). The memory 525 can be a high-speed RAM memory or a non-volatile memory such as at least one disk memory. The memory 525 can further be at least one storage device located away from the processor 521. The memory 525 as a computer readable storage medium can include an operating system, a network communication module, a user interface module and a device control application program.

[0051] Further, in the electronic control unit 52, the network interface 524 can provide network communication functions and can be communicatively connected with the rotary drive 312, the fluid power station 4, the counting sensor 51, the gas pressure sensor and the liquid pressure sensor; the user interface 523 is mainly used to provide an input interface for the user; and the processor 521 can be used to call the device control application program stored in the memory 525 to realize the testing of the service life of the pipeline connection structure of the plurality of test stations 2.

[0052] Further, the electronic control unit 52 further includes a timer 526 for recording the single continuous running time of the rotary drive 312. It can be understood that the single continuous running time of the rotary drive 312 refers to the time from the start of the pipeline connection structure test to the system failure or termination, and this data can be used to calculate the service life of the pipeline connection structure.

[0053] It should be understood that, in some possible embodiments, the processor 521 can be a central processing unit (CPU), and can also be other general-purpose processors, DSPs, ASICs, FPGAs or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or can also be any conventional processor. The memory 525 can include read-only memory and random access memory, and provides instructions and data for the processor 521.

[0054] Further, the pipeline service life is calculated in the following manner: ; In the formula, is the service life of the pipeline (unit: y); is the total number of revolutions of the rotary table (unit: r); is the rotary speed of the rotary table (unit: r / min); is the equipment operation rate; is the daily production shift (unit: times / d); is the working time per shift (unit: h / time); is the working condition coefficient; is the conversion coefficient (d / y); is the conversion coefficient (min / h).

[0055] It should be noted that, , , , The numerical value is input according to the actual situation to be simulated; the working condition coefficient has a value of: , wherein, is related to the smoothness and roughness of the inner wall material of the pipeline that needs to be in contact with friction, and when the roughness is ≤1.6, such as stainless steel, the value is 1, when the roughness is between 1.6 and 6.3, the value is 0.80, and when the contact surface is too rough, it is not considered; is related to the actual working environment temperature of the pipeline, and when the working temperature is -20°C to 50°C, the value is 1; when the working temperature is 50°C to 100°C, the value is 0.90; when the working temperature is 100°C to 150°C, the value is 0.75; when the working temperature is greater than 150°C, the hose is generally difficult to withstand, so it is not considered (this value is a safety factor, and the maximum environmental temperature needs to be used according to the minimum value in the specifications of the cable, pipe and pipe joint); is valued according to the quality of the pipe joint and the pipeline, and its range is 0.8 to 1.

[0056] Example 2 As Figures 6 to 8 shown, based on example 1, the application example 2 provides a use method of a pipeline connection structure life test system, comprising the following steps: S1: arranging at least one test station 2 on the installation assembly 1, arranging the pipeline connection structure to be tested on each rotary table 21 respectively, and connecting the pipeline from the pipeline fixing structure on the pipeline fixing disc 22 to the pipeline connection structure on the rotary table 21 through the wear-resistant barrel 24 from the fluid power station 4; S2: after the pipeline assembly is completed, the test system is debugged and ensured to be leak-free, the fluid power station 4 is started, and the set test pressure is provided to the connected pipeline; S3: Set test parameters including rotation speed and mode through the control console 5; start the rotation driver 312 to drive the rotating disc 21 to rotate continuously in the set direction, and record the rotation number, running time and pipeline pressure data of the rotating disc 21 through the control console 5; S4: Continuously monitor the pressure data during the test; when abnormal pressure data is monitored, control the fluid power station 4 to stop supplying pressure and control the rotation driver 312 to stop running; S5: Repeat steps S1 to S4 to perform multiple tests.

[0057] Further, in step S4, when abnormal pressure data is monitored, record the total rotation number of the rotating disc at this time as the failure cycle number of the pipeline connection structure; the failure cycle number is used to evaluate the service life of the pipeline connection structure under the simulated working condition.

[0058] In an optional embodiment, the calculation method of the service life of the pipeline connection structure is as follows: ; In the formula, is the service life of the pipeline (unit: y); is the total rotation number of the rotating disc (unit: r); is the rotating speed of the rotating disc (unit: r / min); is the equipment operation rate; is the daily production shift (unit: times / d); is the working time per shift (unit: h / time); is the working condition coefficient; is the conversion coefficient (d / y); is the conversion coefficient (min / h).

[0059] It should be noted that, , , , The numerical value is input according to the actual situation to be simulated; the working condition coefficient has a value of: wherein, is related to the smoothness and roughness of the inner wall material of the pipeline that needs to be in contact with friction; when the roughness is ≤1.6, such as stainless steel, the value is 1; when the roughness is between 1.6 and 6.3, the value is 0.80; when the contact surface is too rough, it is not considered; Correlation with the actual working environment temperature of the pipeline, when the working temperature is-20°C to 50°C, the value is 1; when the working temperature is 50°C to 100°C, the value is 0.90; when the working temperature is 100°C to 150°C, the value is 0.75; when the working temperature is greater than 150°C, the hose is generally difficult to withstand, so it is not considered (this value is a safety factor, and the maximum environmental temperature needs to be used according to the minimum value of the specifications of the cable, pipe and pipe joint); According to the pipeline joint and the pipeline quality, the value is 0.8 to 1.

[0060] In the optional embodiment, when the test station 2 needs to be added, the machine needs to be stopped, assembled and started again, the rotation number of the test station is continued to accumulate, and the test data of the added test station 2 is also displayed in real time on the display panel. The data of each test station 2 is independent and does not affect each other. The whole process is simple to install and convenient to debug.

[0061] Other technical features are the same as those of embodiment 1 and can achieve the same technical effects, which will not be repeated here.

[0062] Embodiment 3 Based on embodiment 1, the application of the pipeline connection structure life test system is provided, which is used for testing the life of the pipeline connection structure working in the rotating working condition. The dynamic stress state and the running environment in the actual use process can be effectively simulated, so that the durability, stability and reliability of various rotating pipeline connection forms can be scientifically evaluated and verified, and improvement can be made.

[0063] Other technical features are the same as those of embodiment 1 and can achieve the same technical effects, which will not be repeated here.

[0064] It should be noted that if the invention involves directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, motion condition and the like between the components in a certain posture (as shown in the drawings). If the specific posture changes, the directional indications also change accordingly.

[0065] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0066] In the present application, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed, or further includes elements inherent to such process, method, article or apparatus. Without more limitations, the elements defined by the statement "comprising" do not exclude the presence of other identical elements in the process, method, article or apparatus including the elements.

[0067] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit it; those skilled in the art can easily understand that the above description is only the preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pipeline connection structure life testing system, characterized in that, include: Installation components (1), test station (2), power components (3), fluid power station (4) and control console (5); The mounting component (1) is fixedly installed to support the test station (2) and the power component (3). The test station (2) is detachably mounted on the installation component (1) and is used to install the pipeline connection structure to be tested; The power assembly (3) is mounted on the mounting assembly (1) and includes an active component (31) and a driven component (32) connected to the test station (2). The active component (31) cooperates with the driven component (32) to drive the components of the test station (2) to perform bidirectional rotational motion. The fluid power station (4) is connected to the pipeline in the test station (2) and is used to provide fluid with simulated working pressure to the pipeline connected to the pipeline connection structure to be tested; The control console (5) is communicatively connected to the power assembly (3) and the fluid power station (4) to control the operating status of the power assembly (3) and the output pressure of the fluid power station (4), and to record the operating data during the test.

2. The testing system according to claim 1, characterized in that, The mounting assembly (1) includes: a first mounting bracket (11), a first mounting plate (12), a second mounting plate (13), a first support bracket (14), a second mounting bracket (15), a third mounting plate (16), an oil baffle groove (17), an oil receiving tray (18), and a first support base (19). The upper end of the first mounting bracket (11) is provided with a plurality of corresponding first mounting pads (11a), and the first mounting pads (11a) are provided with a plurality of mounting holes; The first mounting plate (12) is detachably connected to the first mounting bracket (11) by connecting bolts and two corresponding first mounting pads (11a), and is located between multiple second mounting plates (13) and all are on the same horizontal plane; The second mounting plate (13) is provided with a plurality of corresponding waist-shaped holes, which are detachably connected to the first mounting bracket (11) through the waist-shaped holes and the corresponding first mounting pad (11a), and the relative position of the plate to the first mounting bracket (11) is finely adjusted through the waist-shaped holes; The first support frame (14) has a plurality of second mounting pads (14a) at its bottom end and a plurality of third mounting pads (14b) at its top end. It is detachably connected to the first mounting frame (11) through the second mounting pads (14a) and the corresponding first mounting pads (11a). The second mounting bracket (15) has a plurality of fourth mounting pads (15a) at its bottom and a plurality of fifth mounting pads (15b) at its top. It is detachably connected to the first support bracket (14) through the fourth mounting pads (15a) and the corresponding third mounting pads (14b). The third mounting plate (16) is provided with a plurality of corresponding waist-shaped holes, which are detachably connected to the second mounting bracket (15) through the waist-shaped holes and the corresponding fifth mounting pad (15b), and the relative position of the plate and the second mounting bracket (15) can be finely adjusted through the waist-shaped holes; The oil baffle groove (17) is adapted to the second mounting bracket (15) and is upside down on the upper end of the second mounting bracket (15); The oil receiving tray (18) is located below the oil baffle groove (17), and its bottom plate is fixedly connected to the first mounting bracket (11) through several support pads. The cross-sectional shape and size of the oil receiving tray (18) are larger than the cross-sectional shape and size of the oil baffle groove (17). Multiple first support seats (19) are respectively provided on the upper end of the first mounting plate (12) and the second mounting plate (13) and correspond one to one. Two first support plates (19a) are provided on one side of each support seat. The two first support plates (19a) are horizontally arranged and have bearing mounting holes arranged coaxially.

3. The testing system according to claim 2, characterized in that, The test station (2) includes: a turntable (21), a pipeline fixing plate (22), a height adjustment component (23), and an anti-wear barrel (24). The bottom end of the turntable (21) is connected to the driven member (32), and the pipeline connection structure to be tested is installed on it; The pipeline fixing plate (22) is connected to the height adjusting member (23), and is provided with a pipeline fixing structure for fixing the pipeline from the fluid power station (4); The height adjustment component (23) is located on the upper end of the third mounting plate (16). It adjusts the slack of the pipeline connecting the pipeline fixing plate (22) and the turntable (21) by adjusting the relative height between the pipeline fixing plate (22) and the turntable (21). The wear-resistant barrel (24) is mainly made of transparent wear-resistant material, is set above the turntable (21) and connected to the third mounting plate (16), and its bottom opening surrounds the pipeline activity area on the turntable (21).

4. The testing system according to claim 3, characterized in that, The active component (31) includes: a speed reducer (311) and a rotary drive component (312); The reducer (311) is located at the bottom of the first mounting plate (12), and one end of its output shaft passes through the first mounting plate (12) and the two first support plates (19a) in sequence to connect with the turntable (21) above it to drive the turntable (21) to rotate. The rotary drive (312) is located on one side of the reducer (311), and its output shaft is connected to the input shaft of the reducer (311). The output shaft of the reducer (311) is rotatably connected to the two first support plates (19a) via bearings, and a drive wheel (311a) is provided in the part between the two first support plates (19a). The driven member (32) includes: a driven shaft (321) and a driven wheel (322); The driven shaft (321) is rotatably connected to two first support plates (19a) on one side of the first support seat (19) on the second mounting plate (13) via bearings, and its upper end is connected to the turntable (21) of the corresponding test station (2); There is at least one driven wheel (322), which is sleeved on the portion of the driven shaft (321) between the corresponding two first support plates (19a); The driving wheel (311a) is connected to the driven wheel (322) via a belt, and the driving wheel (311a) has the same diameter as the driven wheel (322).

5. The testing system according to claim 4, characterized in that, The control console (5) includes: a counting sensor (51), a gas pressure sensor, and a liquid pressure sensor; The counting sensor (51) is mounted on one side of the turntable (21) via a plurality of second support bases (51a) respectively mounted on the first mounting plate (12) and the second mounting plate (13), and the turntable (21) is provided with a corresponding response component (51b) to record the number of rotations of the turntable (21) in cooperation with the counting sensor (51). The gas pressure sensor and the liquid pressure sensor are both located in the fluid power station (4) and are connected to the corresponding gas pipeline and liquid pipeline respectively, for detecting the pressure of the corresponding fluid pipeline in the test station (2).

6. The testing system according to claim 5, characterized in that, The console (5) also includes an electronic control unit (52), which is configured to: Control the power component (3) to drive the test station (2) to rotate according to the set mode; Adjust the fluid pressure output by the fluid power station (4); Acquire and record test data from the counting sensor (51), the gas pressure sensor and the liquid pressure sensor.

7. A method of using a pipeline connection structure life testing system, implemented using the testing system as described in any one of claims 1-6, characterized in that, Includes the following steps: S1: Arrange at least one test station (2) on the installation component (1), set the pipeline connection structure to be tested on each turntable (21), and connect the pipeline from the fluid power station (4) to the pipeline connection structure on the turntable (21) via the anti-wear barrel (24) from the pipeline fixing structure on the pipeline fixing plate (22). S2: After the pipeline is assembled, the test system is debugged and no leakage is ensured, the fluid power station (4) is started to provide the set test pressure to the connecting pipeline; S3: Set test parameters, including rotation speed and rotation mode, through the console (5); Start the rotary drive (312) to drive the turntable (21) to perform a set bidirectional continuous rotational motion. At the same time, record the number of rotations of the turntable (21), the running time and the pipeline pressure data through the control console (5). S4: During the test, continuously monitor the pressure data; when abnormal pressure data is detected, control the fluid power station (4) to stop supplying pressure and control the rotary drive (312) to stop running; S5: Repeat steps S1 to S4 multiple times for testing.

8. The method of use according to claim 7, characterized in that, In step S4, when abnormal pressure data is detected, the total number of rotations of the turntable at this time is recorded as the failure cycle number of the pipeline connection structure. The failure cycle count is used to evaluate the service life of the pipeline connection structure under simulated operating conditions.

9. The method of use according to claim 8, characterized in that, The calculation method for the lifespan of pipeline connection structures is as follows: ； In the formula, Pipeline service life (unit: y); Total number of revolutions of the turntable (unit: r); Rotational speed of the turntable (unit: r / min); Equipment utilization rate; Daily production shifts (unit: shifts / day); The working hours for each shift (unit: h / shift); This is the operating condition coefficient; Conversion factor (d / y); This is the conversion factor (min / h).

10. An application of a pipeline connection structure life testing system, implemented using the testing system as described in any one of claims 1-6, characterized in that, Used to test the lifespan of pipeline connection structures operating under rotating conditions.

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