A hydraulic coupling system detection device

Abstract

The application belongs to the technical field of hydraulic shaft coupling system detection, in particular to a hydraulic shaft coupling system detection device, which comprises a detection base, a supporting frame fixedly connected to the detection base, two first supporting plates and two second supporting plates arranged to quickly position the hydraulic shaft coupling system for loading and testing the hydraulic shaft coupling system for multiple data of positive torsion, reverse torsion, thrust and tension, replacing the traditional equipment for testing torque of the hydraulic shaft coupling alone, effectively improving the detection efficiency, reducing the cost of personnel and operation, reducing the requirement for professional skills of the operator, further improving the feasibility and practicality of the overall detection work; meanwhile, the two first supporting plates and the two second supporting plates are combined to present V-shaped grooves, and by adjusting the size and specification of the related components, the loading detection work of the hydraulic shaft coupling system of different models and specifications can be applied, improving the application range and practicality of the detection device.

Description

Technical Field

[0001] This invention belongs to the field of hydraulic coupling system testing technology, specifically a hydraulic coupling system testing device. Background Technology

[0002] A hydraulic coupling system consists of a hydraulic coupling, a hydraulic nut, and hydraulic bolts. In the process of testing torque, thrust, and tension in a hydraulic coupling, the hydraulic nut is a special type of nut primarily used for fastening connections. It can transmit fluid pressure to generate thrust. The hydraulic bolt is a new type of bolt used for flange connections. It does not require hammering or cooling; only a special tool is needed. Fluid pressure is applied to stretch the conical surface to create an interference fit, allowing for convenient and quick installation and disassembly while ensuring the required interference fit. Hydraulic bolts are reusable. A hydraulic coupling is a crucial component that transmits torque, thrust, and tension to ensure the normal operation of transmission equipment. It utilizes the interference fit between the inner and outer sleeves to achieve smooth torque transmission. In these transmission components, they are typically tightly connected at both ends of the flange using hydraulic bolts. The performance of the hydraulic coupling is tested by the thrust and tension of the hydraulic nut, achieving efficient and precise force transmission.

[0003] A patent application with publication number CN119321887A discloses a hydraulic coupling torque testing device, including a base plate, a movable support plate, a drive seat, a transmission component, and a dynamic torque sensor. The drive seat, which is rotatably connected to the fixed support plate fixedly connected to the base plate, is connected to the drive motor. This application can use the drive seat and the transmission component to stably connect the coupling to the testing device for torque testing. During the connection process, the insertion rod on the drive seat can slide and adjust its position on the connecting seat according to the actual connection requirements.

[0004] In the application of hydraulic coupling testing, although the aforementioned hydraulic coupling testing equipment can stably connect the coupling through the drive seat and transmission components to perform torque testing, ensuring its stability and reliability under high-pressure working environments, traditional hydraulic coupling testing equipment is mainly designed for individual hydraulic couplings and is difficult to directly perform multiple tests on the entire complex hydraulic coupling system. Compared to a single hydraulic coupling, the hydraulic coupling system has a more complex structure, including hydraulic couplings, hydraulic nuts, and hydraulic bolts. When traditional testing equipment is connected to it, it is difficult to quickly load and test different models of hydraulic coupling systems.

[0005] Therefore, the present invention provides a testing device for hydraulic coupling systems. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: A hydraulic coupling system testing device of the present invention includes a testing base; a support frame is fixedly connected to the testing base; a first hydraulic nut is fixedly connected to the support frame; a torque support is fixedly connected to the side of the testing base away from the support frame; a spline flange assembly is fixedly connected to the torque support; a sliding seat is slidably connected to the testing base via a first electric slider; a first hydraulic cylinder is fixedly connected to the sliding seat; a support is fixedly connected to the output end of the first hydraulic cylinder; two first support plates are fixedly connected to the support, and the two first support plates are arranged opposite to each other; a second support plate is fixedly connected to the upper surface of the side of the support base away from the first support plate, and the two second support plates are arranged opposite to each other.

[0008] Preferably, the spline flange assembly is equipped with a plurality of hydraulic bolts; a hydraulic coupling is fixedly connected to the spline flange assembly by the plurality of hydraulic bolts; a second hydraulic nut is fixedly connected to the end of the hydraulic coupling away from the spline flange assembly; a shaft segment is fixedly connected to the side of the second hydraulic nut away from the hydraulic coupling, and the side of the shaft segment away from the second hydraulic nut is in contact with the output end of the first hydraulic nut.

[0009] Preferably, a second hydraulic cylinder is fixedly connected to the support base, and the second hydraulic cylinder is located between two second support plates; a connecting seat is fixedly connected to the output end of the second hydraulic cylinder; a rotating shaft is rotatably connected to the second support plate, and a telescopic plate is hinged between the connecting seat and the rotating shaft.

[0010] Preferably, a sliding frame is slidably connected to the support base via a second electric slider; a third hydraulic cylinder is fixedly connected to the sliding frame; a clamping plate is fixedly connected to the output end of the third hydraulic cylinder, and the clamping plate is slidably connected to the sliding frame. The clamping plate is hook-shaped, and a V-groove is provided on the top of the clamping plate.

[0011] Preferably, a connecting rod is fixedly connected to the clamping plate; a straightening plate is fixedly connected to the side of the connecting rod away from the clamping plate, and a V-shaped groove is provided on the straightening plate.

[0012] Preferably, multiple fixed seats are fixedly connected to both sides of the first support plate; a sliding plate is slidably connected to the inner wall of the fixed seat through a first elastic element; and a sliding roller is fixedly connected to the sliding plate.

[0013] Preferably, a fixed cylinder is fixedly connected to both upper surfaces of the sliding seat; a support cylinder is slidably connected to the inner wall of the fixed cylinder through a second elastic element, and the end of the support cylinder away from the fixed cylinder is fixedly connected to the bottom of the support seat.

[0014] Preferably, a connecting plate is slidably connected to the testing base via a third electric slider; the two ends of the connecting plate are respectively fixed to two sliding seats.

[0015] Preferably, a friction pad is fixedly attached to the first tray, and the two friction pads are respectively located on the side of the two first trays that are close to each other; the friction pad is fixedly attached with a plurality of anti-slip protrusions.

[0016] Preferably, four hydraulic cylinders are fixedly connected to the torque support; the four hydraulic cylinders are two positive torque cylinders and two negative torque cylinders, and one positive torque cylinder and one negative torque cylinder are respectively on each side of the torque support.

[0017] The beneficial effects of this invention are as follows: 1. The hydraulic coupling system testing device of this invention, through the cooperation of two No. 1 support plates and two No. 2 support plates, enables rapid positioning and loading of hydraulic coupling systems, and tests multiple data such as forward torque, reverse torque, thrust, and tension. This device replaces traditional equipment used alone for testing the torque of hydraulic couplings, effectively improving testing efficiency, reducing personnel and operational costs, lowering the requirements for operators' professional skills, and further enhancing the feasibility and practicality of the overall testing work. Simultaneously, the two No. 1 support plates and two No. 2 support plates combine to form V-shaped grooves. Different hydraulic coupling systems placed on these grooves ensure stable positioning of the hydraulic coupling system during loading, preventing shaking and displacement, and maintaining the centered position of the hydraulic coupling system on the No. 1 and No. 2 support plates, guaranteeing loading stability. This testing device also has good versatility; by adjusting the size and specifications of relevant components, it can be applied to the loading and testing of hydraulic coupling systems of different models and specifications, improving the applicability and practicality of the testing device.

[0018] 2. The hydraulic coupling system testing device of the present invention uses the output end of a second hydraulic cylinder to drive the connecting seat to the top. At this time, the telescopic plate rotates with the rotating shaft and adjusts its extension and retraction until the surface of the telescopic plate is in contact with the surface of the shaft segment. This achieves precise positioning and stable support of the shaft segment, ensuring that the shaft segment will not shift or shake due to force during the loading process. This ensures the stability and accuracy of the entire hydraulic coupling system during connection. Through the synergistic action of the second hydraulic cylinder, the connecting seat, the rotating shaft, and the telescopic plate, flexible adaptation and stable support for hydraulic coupling system components of different sizes are achieved, further enhancing the versatility and practicality of the testing device. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the sliding seat in this invention; Figure 3 This is a schematic diagram of the hydraulic bolt in this invention; Figure 4 This is a schematic diagram of the structure of the No. 1 hydraulic nut in this invention; Figure 5 This is a schematic diagram of the structure of the first pallet in this invention; Figure 6 This is a schematic diagram of the connecting seat in this invention.

[0021] In the diagram: 1. Testing machine base; 11. Support frame; 12. No. 1 hydraulic nut; 13. Torque support; 14. Spline flange assembly; 15. Hydraulic coupling; 16. No. 2 hydraulic nut; 17. Shaft section; 18. Hydraulic bolt; 19. Sliding seat; 191. No. 1 hydraulic cylinder; 192. Support seat; 193. No. 1 pallet; 194. No. 2 pallet; 2. No. 2 hydraulic cylinder; 21. Connecting seat; 22. Rotating shaft; 23. Telescopic plate; 3. Sliding frame; 31. No. 3 hydraulic cylinder; 32. Clamping plate; 4. Connecting rod; 41. Straightening plate; 5. Fixed seat; 51. Sliding roller; 6. Fixed cylinder; 61. Support cylinder; 7. Connecting plate; 8. Friction pad. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0023] like Figures 1 to 6 As shown in the figure, a hydraulic coupling system testing device according to an embodiment of the present invention includes a testing base 1; a support frame 11 is fixedly connected to the testing base 1; a first hydraulic nut 12 is fixedly connected to the support frame 11; a torque support 13 is fixedly connected to the side of the testing base 1 away from the support frame 11; a spline flange assembly 14 is fixedly connected to the torque support 13; a sliding seat 19 is slidably connected to the testing base 1 via a first electric slider; a first hydraulic cylinder 191 is fixedly connected to the sliding seat 19; a support seat 192 is fixedly connected to the output end of the first hydraulic cylinder 191; two first support plates 193 are fixedly connected to the support seat 192, and the two first support plates 193 are arranged opposite to each other; a second support plate 194 is fixedly connected to the upper surface of the side of the support seat 192 away from the first support plate 193, and the two second support plates 194 are arranged opposite to each other. When performing multiple tests on the forward torque, reverse torque, thrust, and tension of the hydraulic coupling system, the testing base 1 serves as the main support structure for the hydraulic coupling system testing device. The support frame 11 and torque support 13 are fixed on the testing base 1 as test benches. The spline flange assembly 14 includes a spline flange and a thrust ring. The hydraulic coupling system to be tested needs to be loaded between the first hydraulic nut 12 and the spline flange assembly 14. First, the entire hydraulic coupling system is lifted by a crane and suspended on the support base 192, positioned between the two first supports. Between plate 193 and the two second-tier support plates 194, the sliding seat 19 and the hydraulic coupling system are moved between the first hydraulic nut 12 and the spline flange assembly 14 via the first electric slider. The first electric slider is a large sliding structure that can drive the hydraulic coupling system to move stably. It can also be replaced with a hydraulic system. Subsequently, the output end of the first hydraulic cylinder 191 drives the hydraulic coupling system on the support seat 192 to adjust its height, so that the hydraulic coupling system can be stably connected with the first hydraulic nut 12 and the spline flange assembly 14. Then, the hydraulic coupling system is... The system performs multiple tests including positive torque, negative torque, thrust, and tension. This testing device is equipped with torque, thrust, and tension sensors. The torque sensor accurately measures the torque experienced by the hydraulic coupling system during operation. The thrust sensor, located near the thrust ring of the spline flange assembly 14, monitors the thrust value of the hydraulic coupling system in real time. The tension sensor is installed at the first hydraulic nut 12 to accurately acquire the tension data of the hydraulic coupling system. These sensors transmit the collected data to an external data processing system. The data processing system performs detailed analysis and processing of the received data, ultimately producing accurate test results. This provides a reliable basis for the performance evaluation and quality inspection of the hydraulic coupling system. This hydraulic coupling system testing device, which allows for rapid positioning and loading of the hydraulic coupling system to test multiple data points, replaces traditional equipment used solely for testing the torque of hydraulic couplings. This effectively improves testing efficiency, reduces personnel and operational costs, lowers the requirements for operators' professional skills, and further enhances the feasibility and practicality of the overall testing work. Meanwhile, the two No. 1 pallets 193 and the two No. 2 pallets 194 are combined to form V-shaped grooves. Different hydraulic coupling systems are placed on the two V-shaped grooves, which can ensure that the hydraulic coupling system is stable in position during the feeding process, without shaking or shifting. It always maintains the centered effect of the hydraulic coupling system on the No. 1 pallet 193 and No. 2 pallet 194, ensuring the stability of feeding. This detection device also has good versatility. By adjusting the size and specifications of the relevant components, it can be used for feeding detection of hydraulic coupling systems of different models and specifications, which improves the applicability and practicality of the detection device.

[0024] like Figures 1 to 4As shown, a plurality of hydraulic bolts 18 are mounted on the spline flange assembly 14; a hydraulic coupling 15 is fixedly connected to the spline flange assembly 14 by the plurality of hydraulic bolts 18; a second hydraulic nut 16 is fixedly connected to one end of the hydraulic coupling 15 away from the spline flange assembly 14; a shaft segment 17 is fixedly connected to one side of the second hydraulic nut 16 away from the hydraulic coupling 15, and the side of the shaft segment 17 away from the second hydraulic nut 16 is in contact with the output end of the first hydraulic nut 12; When testing a hydraulic coupling system, which consists of a hydraulic coupling 15, a second hydraulic nut 16, and a shaft section 17, the first hydraulic nut 12 generates tension through hydraulic drive to test whether the hydraulic coupling 15 will displace. The second hydraulic nut 16 generates thrust through hydraulic drive to test whether the hydraulic coupling 15 will displace. One end of the shaft section 17 is fitted to the output end of the first hydraulic nut 12. The arrangement of multiple hydraulic bolts 18 increases the connection stability between the spline flange assembly 14 and the hydraulic coupling 15, enabling the hydraulic coupling 15 to better withstand changes in tension, thrust, and torque during testing, further improving the accuracy and reliability of the test. This structural design allows the testing device to more comprehensively evaluate the performance of the hydraulic coupling system under different stress conditions, providing strong data support for the optimized design and quality improvement of the hydraulic coupling system.

[0025] like Figures 1 to 3 , Figure 5 , Figure 6 As shown, a second hydraulic cylinder 2 is fixedly connected to the support base 192, and the second hydraulic cylinder 2 is located between two second support plates 194; a connecting seat 21 is fixedly connected to the output end of the second hydraulic cylinder 2; a rotating shaft 22 is rotatably connected to the second support plate 194, and a telescopic plate 23 is hinged between the connecting seat 21 and the rotating shaft 22. When the hydraulic coupling system is placed on the surface of the support seat 192 for loading, the hydraulic coupling 15 is placed between the two first support plates 193, while the two second support plates 194 support the shaft section 17. Since the size of the shaft section 17 is usually smaller than the size of the hydraulic coupling 15, the output end of the second hydraulic cylinder 2 drives the connecting seat 21 to rise. At this time, the telescopic plate 23 rotates with the rotating shaft 22 and is adjusted to extend and retract until the surface of the telescopic plate 23 is in contact with the surface of the shaft section 17, thereby achieving precise positioning and stable support for the shaft section 17. This ensures that the shaft section 17 will not shift or shake due to force during the loading process, thus ensuring the stability and accuracy of the entire hydraulic coupling system during connection. Through the synergistic action of the second hydraulic cylinder 2, the connecting seat 21, the rotating shaft 22, and the telescopic plate 23, flexible adaptation and stable support for hydraulic coupling system components of different sizes are achieved, further enhancing the versatility and practicality of the testing device.

[0026] A sliding frame 3 is slidably connected to the support base 192 via a second electric slider; a third hydraulic cylinder 31 is fixedly connected to the sliding frame 3; a clamping plate 32 is fixedly connected to the output end of the third hydraulic cylinder 31, and the clamping plate 32 is slidably connected to the sliding frame 3. The clamping plate 32 is hook-shaped, and a V-shaped groove is provided on the top of the clamping plate 32. When the hydraulic coupling system is hoisted onto the support base 192, the second electric slider drives the sliding frame 3 to slide closer to the support base 192, so that the V-groove on the top of the clamping plate 32 is positioned above the hydraulic coupling 15. Subsequently, the output end of the third hydraulic cylinder 31 extends, driving the clamping plate 32 to move downward until the V-groove on the top of the clamping plate 32 is in contact with the hydraulic coupling 15. Because the clamping plate 32 is hook-shaped and has a V-groove, and works in conjunction with the V-groove formed by the two first support plates 193, this design can better adapt to the shape of the hydraulic coupling 15, ensuring smooth operation during the loading process. The hydraulic coupling 15 is securely clamped. When the hydraulic coupling system is unloaded, the output end of the third hydraulic cylinder 31 retracts, causing the clamping plate 32 to move upward. The second electric slider then drives the sliding frame 3 to slide away from the hydraulic coupling system, removing the tested hydraulic coupling system for the loading of the next hydraulic coupling system. This clamping structure, composed of the second electric slider, the sliding frame 3, the third hydraulic cylinder 31, and the clamping plate 32, further improves the ease of operation and loading stability of the testing device for the hydraulic coupling system, enhancing the overall practicality and reliability of the testing device.

[0027] A connecting rod 4 is fixedly connected to the clamping plate 32; a straightening plate 41 is fixedly connected to the side of the connecting rod 4 away from the clamping plate 32, and a V-shaped groove is provided on the straightening plate 41. When the hydraulic coupling system is hoisted onto the support base 192, the clamping plate 32 drives the straightening plate 41 connected to the connecting rod 4 to press down synchronously. The V-groove on the straightening plate 41, in conjunction with the V-groove on the clamping plate 32, can press different areas of the hydraulic coupling 15. This double V-groove design can distribute the pressure more evenly, avoid local stress concentration, and effectively prevent the hydraulic coupling 15 from deforming and being damaged due to uneven force during the feeding process. This allows the pressed hydraulic coupling 15 to remain centered and straight on the support base 192, while further enhancing the stability of the clamping. The addition of the connecting rod 4 and the straightening plate 41 makes the clamping structure more complete, which can adapt to hydraulic coupling system components of different sizes and shapes, further improving the versatility and adaptability of the testing device.

[0028] Multiple fixed seats 5 are fixedly connected to both sides of the first support plate 193; a sliding plate is slidably connected to the inner wall of the fixed seat 5 through a first elastic element; a sliding roller 51 is fixedly connected to the sliding plate. When the hydraulic coupling system is hoisted between the two No. 1 support plates 193, it is difficult to make fine adjustments after the hydraulic coupling system is placed. Using a crane to lift the hydraulic coupling system a short distance, the No. 1 elastic element springs up the sliding plate, and the hydraulic coupling 15 on the sliding plate also slides out of the interior of the fixed seat 5 at the same time, so that the hydraulic coupling 15 fits against the surface of multiple sliding rollers 51. The multiple sliding rollers 51 roll to support the hydraulic coupling system. At this time, the operator can easily make fine adjustments to the position of the hydraulic coupling system to ensure that the hydraulic coupling system can be accurately aligned and connected between the No. 1 hydraulic nut 12 and the spline flange assembly 14, which meets the positioning requirements of subsequent testing. The design of the No. 1 elastic element gives the sliding plate a certain buffering and self-adaptive ability, which can automatically adjust the support force according to the weight and size of the hydraulic coupling system, avoiding the impact of excessive or insufficient support force on the stability of the hydraulic coupling system. At the same time, the rolling support method of multiple sliding rollers 51 reduces the friction between the hydraulic coupling system and the support surface, making the fine adjustment process smoother and further improving the efficiency and accuracy of loading.

[0029] like Figures 1 to 3 , Figure 5 , Figure 6 As shown, a fixed cylinder 6 is fixedly connected to both upper surfaces of the sliding seat 19; a support cylinder 61 is slidably connected to the inner wall of the fixed cylinder 6 through a second elastic element, and the end of the support cylinder 61 away from the fixed cylinder 6 is fixedly connected to the bottom of the support seat 192. When the hydraulic coupling system is hoisted onto the support base 192, two fixed cylinders 6 are respectively fixed to both sides of the sliding seat 19 as bottom supports. The support cylinders 61, together with the second elastic element, support the bottom of both sides of the support base 192. During the loading operation of the hydraulic coupling system, the second elastic element can automatically adjust the degree of compression according to the weight of the hydraulic coupling system placed on the support base 192 and the extension and retraction height of the first hydraulic cylinder 191, playing a good supporting role. It can adapt to hydraulic coupling systems of different sizes and weights, ensuring that the support base 192 always maintains a horizontal and stable state. This bottom support structure design further enhances the stability and reliability of the entire testing device, providing a solid guarantee for the accurate testing of the hydraulic coupling system.

[0030] like Figures 1 to 3 , Figure 5 As shown, a connecting plate 7 is slidably connected to the detection base 1 via a third electric slider; the two ends of the connecting plate 7 are respectively fixed to two sliding seats 19. When unloading the tested hydraulic coupling system, the connecting plate 7 is fixed between the two sliding seats 19. Two sets of loading structures alternate, allowing one set of hydraulic coupling systems to be tested while the other set is temporarily placed on the other loading structure. After the first set is tested, the electric slider 3 drives the temporarily placed hydraulic coupling system to be loaded. Simultaneously, the tested hydraulic coupling system moves to the other side for unloading. This alternating loading and unloading design greatly improves the continuity and efficiency of the testing work, reduces the testing interruption time caused by loading and unloading operations, and makes the entire testing process more compact and smooth. Furthermore, this design allows the testing device to better adapt to the testing needs of different batches of hydraulic coupling systems. Whether testing small or large batches, the alternating frequency and rhythm of the loading structure can be flexibly adjusted to achieve efficient and stable testing operations, further enhancing the practicality and flexibility of the testing device.

[0031] like Figures 1 to 3 , Figure 5 , Figure 6 As shown, a friction pad 8 is fixedly attached to the first tray 193, and the two friction pads 8 are respectively located on the side of the two first trays 193 that are close to each other; multiple anti-slip protrusions are fixedly attached to the friction pad 8. When the hydraulic coupling 15 is placed between the two No. 1 support plates 193, the two friction pads 8 are respectively fixed on the side of the two No. 1 support plates 193 that are close to each other. Multiple anti-slip protrusions can increase the friction between the hydraulic coupling 15 and the No. 1 support plates 193, effectively reducing the slippage of the hydraulic coupling 15 due to external forces during the feeding process, ensuring that the hydraulic coupling 15 maintains a stable position between the two No. 1 support plates 193, and further improving the stability of feeding and the accuracy of detection.

[0032] like Figures 1 to 4 As shown, four hydraulic cylinders are fixedly connected to the torque support 13; the four hydraulic cylinders are two positive torque cylinders and two negative torque cylinders, and one positive torque cylinder and one negative torque cylinder are respectively on each side of the torque support 13. When testing the hydraulic coupling system, a positive torque cylinder and a negative torque cylinder are respectively installed on both sides of the torque support 13. The positive torque cylinder on the left is located on top, and the negative torque cylinder is located on the bottom; the positive torque cylinder on the right is located on the bottom, and the negative torque cylinder is located on top. During the positive torque test, hydraulic pressure is applied to both positive torque cylinders to generate positive torque test data. During the negative torque test, hydraulic pressure is applied to both negative torque cylinders to generate negative torque test data. During positive torque testing, hydraulic pressure is applied to the second hydraulic nut 16 to generate thrust test data; during negative torque testing, hydraulic pressure is applied to the first hydraulic nut 12 to generate tension test data. This mainly checks whether the hydraulic coupling meets the design requirements for positive and negative torque, thrust, and tension, according to design parameters such as: positive torque 200 kN.m and thrust... When the required force of 50kN is reached, maintain pressure for 5 minutes. When the required reverse torque of 200kN.m and tensile force of 50kN are reached, maintain pressure for 5 minutes. Apply hydraulic pressure to hydraulic nut 12 or hydraulic nut 16, and make the piston end face close to the test fixture. The main purpose is to check whether the thrust and sealing performance of hydraulic nut 12 or hydraulic nut 16 on the piston cavity meet the design requirements. According to the design parameters, such as: apply hydraulic pressure to 20MPa and maintain pressure for 5 minutes. Apply hydraulic pressure to the cylinder to generate torque. At the same time, apply hydraulic pressure to hydraulic nut 16 to generate forward thrust. The main purpose is to check whether the shear force of hydraulic bolt 18 under torque meets the design requirements. According to the design parameters, such as: when the required forward torque of 200kN.m and thrust of 50kN are reached, maintain pressure for 5 minutes.

[0033] Working process: When performing multiple tests on the forward torque, reverse torque, thrust, and tension of the hydraulic coupling system, the testing machine base 1 serves as the main support structure of the hydraulic coupling system testing device. The support frame 11 and torque support 13 are fixed on the testing machine base 1 as test benches. The spline flange assembly 14 includes a spline flange and a thrust ring. The hydraulic coupling system to be tested needs to be loaded between the first hydraulic nut 12 and the spline flange assembly 14. First, the entire hydraulic coupling system is lifted by a crane and suspended on the support base 192, positioned between the two first support plates 193 and the two second support plates 194. The first electric slider drives the sliding seat 19 and the hydraulic coupling system to move to the first hydraulic... Between nut 12 and spline flange assembly 14, the first electric slider is a large sliding structure capable of driving the hydraulic coupling system to move stably. It can also be replaced with a hydraulic system. Subsequently, the output end of the first hydraulic cylinder 191 drives the hydraulic coupling system on the support 192 to adjust its height, enabling the hydraulic coupling system to be stably connected to the first hydraulic nut 12 and spline flange assembly 14. Then, multiple tests are performed on the hydraulic coupling system, including forward torque, reverse torque, thrust, and tension. This testing device is also equipped with a torque sensor, a thrust sensor, and a tension sensor. The torque sensor is used to accurately measure the torque experienced by the hydraulic coupling system during operation; the thrust sensor is located on the thrust ring of the spline flange assembly 14. Recently, a hydraulic coupling system testing device has been developed that can monitor the thrust value of the hydraulic coupling system in real time. A tension sensor is installed at position 12 of the first hydraulic nut to accurately acquire the tension data of the hydraulic coupling system. These sensors transmit the collected data to an external data processing system, which performs detailed analysis and processing of the received data to ultimately obtain accurate test results. This provides a reliable basis for the performance evaluation and quality inspection of the hydraulic coupling system. This device, which allows for rapid positioning and testing of multiple data points in the hydraulic coupling system, replaces traditional equipment used solely for testing the torque of hydraulic couplings. It effectively improves testing efficiency, reduces personnel and operational costs, and lowers the skill requirements for operators. The improved technical requirements further enhance the feasibility and practicality of the overall testing work. Simultaneously, the two No. 1 pallets 193 and two No. 2 pallets 194 are combined to form V-shaped grooves. Different hydraulic coupling systems are placed on these two V-shaped grooves, ensuring the stability of the hydraulic coupling system during material loading, preventing shaking and displacement. This maintains the hydraulic coupling system's centered position on the No. 1 pallet 193 and No. 2 pallet 194, guaranteeing the stability of material loading. This testing device also boasts excellent versatility; by adjusting the dimensions and specifications of relevant components, it can be applied to the material loading and testing of different models and specifications of hydraulic coupling systems, thus improving the applicability and practicality of the testing device.When testing a hydraulic coupling system, which is composed of components such as a hydraulic coupling 15, a second hydraulic nut 16, and a shaft section 17, the first hydraulic nut 12 generates tension through hydraulic drive to test whether the hydraulic coupling 15 will displace. The second hydraulic nut 16 generates thrust through hydraulic drive to test whether the hydraulic coupling 15 will displace. One end of the shaft section 17 is attached to the output end of the first hydraulic nut 12. The arrangement of multiple hydraulic bolts 18 increases the connection stability between the spline flange assembly 14 and the hydraulic coupling 15, enabling the hydraulic coupling 15 to better withstand changes in tension, thrust, and torque during testing, further improving the accuracy and reliability of the test. This structural design allows the testing device to more comprehensively evaluate the performance of the hydraulic coupling system under different stress conditions, providing strong data support for the optimized design and quality improvement of the hydraulic coupling system. When the hydraulic coupling system is placed on the surface of the support seat 192 for loading, the hydraulic coupling 15 is placed between the two first support plates 193, while the two second support plates 194 support the shaft section 17. Since the size of the shaft section 17 is usually smaller than the size of the hydraulic coupling 15, the output end of the second hydraulic cylinder 2 drives the connecting seat 21 to rise. At this time, the telescopic plate 23 rotates with the rotating shaft 22 and is adjusted to extend and retract until the surface of the telescopic plate 23 is in contact with the surface of the shaft section 17, thereby achieving precise positioning and stable support for the shaft section 17. This ensures that the shaft section 17 will not shift or shake due to force during the loading process, thus ensuring the stability and accuracy of the entire hydraulic coupling system during connection. Through the synergistic action of the second hydraulic cylinder 2, the connecting seat 21, the rotating shaft 22 and the telescopic plate 23, flexible adaptation and stable support for hydraulic coupling system components of different sizes are achieved, further enhancing the versatility and practicality of the testing device. When the hydraulic coupling system is hoisted onto the support base 192, the second electric slider drives the sliding frame 3 to slide closer to the support base 192, so that the V-groove on the top of the clamping plate 32 is positioned above the hydraulic coupling 15. Then, the output end of the third hydraulic cylinder 31 extends, driving the clamping plate 32 downwards until the V-groove on the top of the clamping plate 32 is in contact with the hydraulic coupling 15. Because the clamping plate 32 is hook-shaped with a V-groove, and in conjunction with the V-groove formed by the two first support plates 193, this design better adapts to the shape of the hydraulic coupling 15, ensuring stable clamping of the hydraulic coupling 15 during loading. When the hydraulic coupling system is unloaded, the output end of the third hydraulic cylinder 31 retracts, driving the clamping plate 32 upwards. The second electric slider then drives the sliding frame 3 to slide away from the hydraulic coupling system, removing the inspected hydraulic coupling system for loading the next hydraulic coupling system. This process, using the second electric slider, sliding frame 3, third hydraulic cylinder 31, and clamping plate 32, allows for efficient loading of the next hydraulic coupling system. The clamping structure further improves the ease of operation and feeding stability of the hydraulic coupling system, enhancing the overall practicality and reliability of the testing device. When the hydraulic coupling system is hoisted onto the support base 192, the clamping plate 32 drives the straightening plate 41 connected to the connecting rod 4 to press down synchronously. The V-groove on the straightening plate 41, in conjunction with the V-groove on the clamping plate 32, can press different areas of the hydraulic coupling 15. This double V-groove design can distribute pressure more evenly, avoid local stress concentration, and effectively prevent the hydraulic coupling 15 from deforming and being damaged due to uneven force during feeding. This allows the pressed hydraulic coupling 15 to remain centered and straight on the support base 192, while further enhancing the stability of the clamping. The addition of the connecting rod 4 and the straightening plate 41 makes the clamping structure more complete, adaptable to hydraulic coupling system components of different sizes and shapes, further improving the versatility and adaptability of the testing device. When the hydraulic coupling system is hoisted between the two No. 1 support plates 193, it is difficult to make fine adjustments after the hydraulic coupling system is placed. Using a crane to lift the hydraulic coupling system a short distance, the No. 1 elastic element springs up the sliding plate, and the hydraulic coupling 15 on the sliding plate also slides out of the interior of the fixed seat 5 at the same time, so that the hydraulic coupling 15 fits against the surface of multiple sliding rollers 51. The multiple sliding rollers 51 roll to support the hydraulic coupling system. At this time, the operator can easily make fine adjustments to the position of the hydraulic coupling system to ensure that the hydraulic coupling system can be accurately aligned and connected between the No. 1 hydraulic nut 12 and the spline flange assembly 14, which meets the positioning requirements of subsequent testing. The design of the No. 1 elastic element gives the sliding plate a certain buffering and self-adaptive ability, which can automatically adjust the support force according to the weight and size of the hydraulic coupling system, avoiding the impact of excessive or insufficient support force on the stability of the hydraulic coupling system. At the same time, the rolling support method of multiple sliding rollers 51 reduces the friction between the hydraulic coupling system and the support surface, making the fine adjustment process smoother and further improving the efficiency and accuracy of loading. When the hydraulic coupling system is hoisted onto the support base 192, two fixed cylinders 6 are respectively fixed to both sides of the sliding seat 19 as bottom supports. The support cylinder 61, together with the second elastic element, supports the bottom of both sides of the support base 192. During the loading operation of the hydraulic coupling system, the second elastic element can automatically adjust the degree of compression according to the weight of the hydraulic coupling system placed on the support base 192 and the extension and retraction height of the first hydraulic cylinder 191, which plays a good supporting role and can adapt to hydraulic coupling systems of different sizes and weights, ensuring that the support base 192 always maintains a horizontal and stable state. This bottom support structure design further enhances the stability and reliability of the entire testing device, providing a solid guarantee for the accurate testing of the hydraulic coupling system. When unloading the tested hydraulic coupling system, the connecting plate 7 is fixed between the two sliding seats 19. Two sets of loading structures alternate, allowing one set of hydraulic coupling systems to be tested while the other set is temporarily placed on the other loading structure. After the first set is tested, the electric slider 3 drives the temporarily placed hydraulic coupling system to be loaded. Simultaneously, the tested hydraulic coupling system moves to the other side for unloading. This alternating loading and unloading design greatly improves the continuity and efficiency of the testing work, reduces testing interruptions caused by loading and unloading operations, and makes the entire testing process more compact and smooth. Furthermore, this design allows the testing device to better adapt to the testing needs of different batches of hydraulic coupling systems. Whether testing small or large batches, the alternating frequency and rhythm of the loading structure can be flexibly adjusted to achieve efficient and stable testing operations, further enhancing the practicality and flexibility of the testing device. When the hydraulic coupling 15 is placed between the two No. 1 support plates 193, the two friction pads 8 are respectively fixed on the side of the two No. 1 support plates 193 that are close to each other. Multiple anti-slip protrusions can increase the friction between the hydraulic coupling 15 and the No. 1 support plates 193, effectively reducing the slippage of the hydraulic coupling 15 due to external forces during the feeding process, ensuring that the hydraulic coupling 15 maintains a stable position between the two No. 1 support plates 193, and further improving the stability of feeding and the accuracy of detection. When testing the hydraulic coupling system, a positive torque cylinder and a negative torque cylinder are respectively installed on both sides of the torque support 13. The positive torque cylinder on the left is located on top, and the negative torque cylinder is located on the bottom; the positive torque cylinder on the right is located on the bottom, and the negative torque cylinder is located on top. During the positive torque test, hydraulic pressure is applied to both positive torque cylinders to generate positive torque test data. During the negative torque test, hydraulic pressure is applied to both negative torque cylinders to generate negative torque test data. During positive torque testing, hydraulic pressure is applied to the second hydraulic nut 16 to generate thrust test data; during negative torque testing, hydraulic pressure is applied to the first hydraulic nut 12 to generate tension test data. This mainly checks whether the hydraulic coupling meets the design requirements for positive and negative torque, thrust, and tension, according to design parameters such as: positive torque 200 kN.m and thrust... When the required force of 50kN is reached, maintain pressure for 5 minutes. When the required reverse torque of 200kN.m and tensile force of 50kN are reached, maintain pressure for 5 minutes. Apply hydraulic pressure to hydraulic nut 12 or hydraulic nut 16, and make the piston end face close to the test fixture. The main purpose is to check whether the thrust and sealing performance of hydraulic nut 12 or hydraulic nut 16 on the piston cavity meet the design requirements. According to the design parameters, such as: apply hydraulic pressure to 20MPa and maintain pressure for 5 minutes. Apply hydraulic pressure to the cylinder to generate torque. At the same time, apply hydraulic pressure to hydraulic nut 16 to generate forward thrust. The main purpose is to check whether the shear force of hydraulic bolt 18 under torque meets the design requirements. According to the design parameters, such as: when the required forward torque of 200kN.m and thrust of 50kN are reached, maintain pressure for 5 minutes.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A testing device for a hydraulic coupling system, characterized in that: The device includes a testing base; a support frame fixedly connected to the testing base; a first hydraulic nut fixedly connected to the support frame; a torque support fixedly connected to the side of the testing base away from the support frame; a splined flange assembly fixedly connected to the torque support; a sliding seat slidably connected to the testing base via a first electric slider; a first hydraulic cylinder fixedly connected to the sliding seat; a support fixedly connected to the output end of the first hydraulic cylinder; two first support plates fixedly connected to the support base, the two first support plates being arranged opposite each other; and a second support plate fixedly connected to the upper surface of the support base on the side away from the first support plates, the two second support plates being arranged opposite each other.

2. The hydraulic coupling system testing device according to claim 1, characterized in that: The spline flange assembly is equipped with multiple hydraulic bolts; a hydraulic coupling is fixed to the spline flange assembly by multiple hydraulic bolts; a second hydraulic nut is fixed to the end of the hydraulic coupling away from the spline flange assembly; a shaft segment is fixed to the side of the second hydraulic nut away from the hydraulic coupling, and the side of the shaft segment away from the second hydraulic nut is in contact with the output end of the first hydraulic nut.

3. The hydraulic coupling system testing device according to claim 2, characterized in that: A second hydraulic cylinder is fixedly connected to the support base, and the second hydraulic cylinder is located between two second support plates; a connecting seat is fixedly connected to the output end of the second hydraulic cylinder; a rotating shaft is rotatably connected to the second support plate, and a telescopic plate is hinged between the connecting seat and the rotating shaft.

4. The hydraulic coupling system testing device according to claim 2, characterized in that: A sliding frame is slidably connected to the support base via a second electric slider; a third hydraulic cylinder is fixedly connected to the sliding frame; a clamping plate is fixedly connected to the output end of the third hydraulic cylinder, and the clamping plate is slidably connected to the sliding frame. The clamping plate is hook-shaped, and a V-groove is provided on the top of the clamping plate.

5. A hydraulic coupling system testing device according to claim 4, characterized in that: A connecting rod is fixedly connected to the clamping plate; a straightening plate is fixedly connected to the side of the connecting rod away from the clamping plate, and a V-shaped groove is provided on the straightening plate.

6. A testing device for a hydraulic coupling system according to claim 2, characterized in that: Multiple fixed seats are fixedly connected to both sides of the first support plate; a sliding plate is slidably connected to the inner wall of the fixed seat through a first elastic element; and a sliding roller is fixedly connected to the sliding plate.

7. A testing device for a hydraulic coupling system according to claim 1, characterized in that: The upper surfaces of both sides of the sliding seat are fixedly connected to a fixed cylinder; the inner wall of the fixed cylinder is slidably connected to a support cylinder through a second elastic element, and the end of the support cylinder away from the fixed cylinder is fixedly connected to the bottom of the support seat.

8. A testing device for a hydraulic coupling system according to claim 2, characterized in that: A connecting plate is slidably connected to the testing base via a No. 3 electric slider; the two ends of the connecting plate are respectively fixed to two sliding seats.

9. A testing device for a hydraulic coupling system according to claim 2, characterized in that: A friction pad is fixedly attached to the first pallet, and the two friction pads are located on the side of the two first pallets that are close to each other; multiple anti-slip protrusions are fixedly attached to the friction pad.

10. A testing device for a hydraulic coupling system according to claim 1, characterized in that: Four hydraulic cylinders are fixedly connected to the torque support; the four hydraulic cylinders are two positive torque cylinders and two negative torque cylinders, and one positive torque cylinder and one negative torque cylinder are respectively on each side of the torque support.

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