An automatic ultrasonic testing device for oil cylinder weld

Abstract

The present application relates to a kind of oil cylinder weld automatic ultrasonic testing equipment, including detection device, and detection device includes support assembly and probe assembly;Support assembly includes wheel seat, driving wheel, driven wheel, wheel driving device for driving driving wheel rotation, driving wheel and driven wheel are respectively installed on wheel seat by bearing, and the rotation axis of driving wheel is parallel with the rotation axis of driven wheel;Probe assembly includes water tank, probe seat set in water tank, probe is installed on probe seat, and elastic component is arranged between probe seat and water tank, probe can be stretched by the opening of water tank top under the elastic force of elastic component;At least one of support assembly and probe assembly can be lifted.The oil cylinder weld automatic ultrasonic testing equipment of the present application is convenient to feed, probe coupling effect is good, detection versatility is high, and weld is not easily affected by the gravity of oil cylinder itself.

Description

Technical Field

[0001] This invention relates to an ultrasonic testing device, and more particularly to an automatic ultrasonic testing device for hydraulic cylinder welds. Background Technology

[0002] For the inspection of the tailstock weld of elbow-type hydraulic cylinders and the flange end and tailstock weld of flange-type hydraulic cylinders, the early inspection method involved fixing the cylinder body inside the cabinet using headstock chucks and tailstock chucks adapted to the cylinder end, then driving it to rotate, and scanning the welded area using a probe above the cylinder. This probe is a phased array probe, installed inside the water spray chamber, driven by a three-dimensional moving mechanism. It uses water spray coupling to achieve coupling with the hydraulic cylinder, and scans the weld of the cylinder at a sector scanning angle of 45-75 degrees.

[0003] This type of hydraulic cylinder weld inspection device has several problems. First, the probe assembly is mounted above the hydraulic cylinder via a probe holder and is driven to move by a three-dimensional moving mechanism. The truss and grippers of the lifting cylinder are also located above the cylinder, which may cause interference between the cylinder's loading mechanism and the probe's driving mechanism. To avoid this interference, the probe assembly must be reset before loading the cylinder, which significantly reduces the cylinder's loading efficiency. Furthermore, there is a risk of damage to the probe assembly during loading, and it also increases the complexity of the upper structure of the cabinet. Furthermore, the current method of coupling the probe with the hydraulic cylinder using a water spray method suffers from relatively poor coupling. Additionally, the rotating cylinder during probe testing causes water splashing, necessitating a complex wastewater collection and circulation system at the bottom of the cabinet. Moreover, the hydraulic cylinder's positioning via compatible head and tail chucks suffers from low versatility. To test different cylinder models, operators must replace the appropriate head and tail chucks. Furthermore, the head and tail chucks are connected to the two ends of the cylinder, which is large and heavy. During testing, the cylinder's weight can easily affect or even damage the weld seams at its ends. Additionally, the cylinder's significant inertia can also affect the weld joints when the chucks drive its rotation. Therefore, a new hydraulic cylinder weld seam inspection device is needed to address these issues. Summary of the Invention

[0004] To address the aforementioned technical problems of inconvenient cylinder loading, susceptibility to interference with probe components, poor coupling between probe and workpiece, low versatility of testing, and susceptibility of cylinder welds to interference, this invention provides an automatic ultrasonic testing device for cylinder welds that facilitates loading, provides good probe coupling, offers high versatility of testing, and minimizes the impact of cylinder gravity on welds.

[0005] The automatic ultrasonic testing equipment for hydraulic cylinder welds of the present invention includes a testing device, which includes a support assembly and a probe assembly; The support assembly includes a wheel seat, a driving wheel, a driven wheel, and a wheel drive device for driving the driving wheel to rotate. The driving wheel and the driven wheel are respectively mounted on the wheel seat by bearings, and the axis of rotation of the driving wheel is parallel to the axis of rotation of the driven wheel. The probe assembly includes a water tank, a probe base disposed in the water tank, and a probe mounted on the probe base. An elastic component is disposed between the probe base and the water tank, and the probe can extend out from the top opening of the water tank under the elastic force of the elastic component. At least one of the support assembly and the probe assembly is capable of being raised and lowered.

[0006] The advantages of this automatic ultrasonic testing equipment for hydraulic cylinder welds are that its testing device includes a support assembly and a probe assembly. The support assembly supports the hydraulic cylinder through a driving wheel and a driven wheel mounted on a wheel seat, and drives the driving wheel to rotate through a wheel drive device, thereby achieving rolling drive of the hydraulic cylinder. The probe seat of the probe assembly is connected to the water tank through an elastic component, allowing the probe at the top of the probe seat to extend from the top opening of the water tank, thus enabling the hydraulic cylinder on the support assembly to fit tightly with the probe, thereby improving the coupling between the probe and the hydraulic cylinder.

[0007] The support components allow the testing equipment to support various types of hydraulic cylinders without the need for head and tail chucks adapted to the cylinders. Furthermore, during testing, operators can adjust the axial position of the support components relative to the cylinder to ensure a reasonable distribution of the cylinder's weight, thereby reducing the impact of its weight on the end welds and preventing damage to the cylinder itself.

[0008] The probe assembly is designed to prevent interference with the probe during cylinder loading, thus avoiding damage to the probe and other components. Furthermore, placing the water tank below the cylinder allows for immersion testing, improving the coupling between the probe and cylinder. Compared to spray coupling, this method reduces water splashing during detection. Even if splashing occurs, the water flows into the water tank under gravity, enabling water recovery and circulation. Overall, the design is simpler and more reliable than the original equipment.

[0009] At least one of the support assembly and probe assembly can be raised or lowered, which allows the water tank or wheel seat to be adjusted in height over a wide range, so that the whole device can be adapted to hydraulic cylinders of different pipe diameters, thereby improving the versatility of the equipment.

[0010] Furthermore, in the automatic ultrasonic testing equipment for hydraulic cylinder welds of the present invention, the probe assembly further includes a collection tank, and the water tank is disposed inside the collection tank. Both the water tank and the collection tank are made of transparent plastic.

[0011] The collection tank allows water overflowing or splashing from the main tank to be collected, preventing it from affecting other electrical components inside the cabinet and facilitating water recycling. The use of transparent plastic for both the main tank and the collection tank allows operators to observe the internal conditions of the tank in real time during testing.

[0012] Furthermore, the automatic ultrasonic testing equipment for hydraulic cylinder welds of the present invention also includes two sets of mandrel assemblies, which are respectively arranged on the left and right sides of the testing device. Each mandrel assembly includes a housing and a mandrel. A mandrel bearing seat is provided on the housing. The mandrel includes a connecting shaft and a top plate fixed to the end of the connecting shaft. A limit wear-resistant plate is provided on the surface of the top plate. The connecting shaft is installed in the mandrel bearing seat through a bearing. At least one of the two mandrel assemblies also includes a mandrel driving device. The body of the mandrel driving device is fixed on the housing, and its output shaft is fixed to the mandrel bearing seat.

[0013] The two sets of mandrel assemblies enable the positioning of the hydraulic cylinder, thereby improving its rolling stability and ensuring the quality of the probe's inspection of the weld.

[0014] Furthermore, the automatic ultrasonic testing equipment for hydraulic cylinder welds of the present invention also includes a ground rail assembly, which includes a rail base and a ground rail disposed on the surface of the rail base. The testing device also includes a base plate that slides with the ground rail. The support assembly and the water tank assembly are both disposed on the base plate. The housing of at least one of the two sets of top assembly is slidably engaged with the ground rail via a slider.

[0015] This design allows operators to quickly and extensively adjust the position of the mandrel assembly and detection device according to the cylinder model to match the cylinder of the corresponding length.

[0016] Furthermore, in the automatic ultrasonic testing equipment for hydraulic cylinder welds of the present invention, a rack parallel to the ground rail is fixed on the rail base, and a walking motor is provided on the housing of the base plate and one of the top components. The body of the walking motor is fixed to the bottom plate surface of the base plate or the housing. The output shaft of the walking motor passes through the base plate or the bottom plate of the housing and is connected to a gear. The gear meshes with the rack.

[0017] The gears, racks, and walking motor enable the automatic movement of the detection device and the mandrel assembly, allowing the system to automatically adjust the position of the detection device and the mandrel assembly according to the cylinder model, thereby further improving the system's automation level.

[0018] Furthermore, in the automatic ultrasonic testing equipment for hydraulic cylinder welds of the present invention, the number of testing devices is two sets, the base plates of the two sets of testing devices are respectively slidably engaged with the ground rail by sliders, and the two sets of testing devices are arranged between the two sets of top assemblies.

[0019] The two sets of top-end components further improve the equipment's support effect on the hydraulic cylinder, preventing overturning due to uneven gravity distribution during testing of excessively long hydraulic cylinders. At the same time, the two sets of testing devices can simultaneously test both ends of the hydraulic cylinder, thereby improving the testing efficiency of the hydraulic cylinder.

[0020] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the following describes the embodiments of the present invention in detail. Attached Figure Description

[0021] Figure 1 This is a 3D view of the detection device.

[0022] Figure 2 This is another 3D view of the detection device.

[0023] Figure 3 This is a disassembly diagram of the testing device.

[0024] Figure 4 It is a 3D diagram of the supporting components.

[0025] Figure 5 This is a disassembled diagram of the supporting components.

[0026] Figure 6 This is a diagram of the internal structure of the probe assembly.

[0027] Figure 7 This is a diagram showing the fit between the probe and the probe mount.

[0028] Figure 8 It's a 3D view of the water tank.

[0029] Figure 9 This is a diagram of the internal structure of the top component.

[0030] Figure 10 It's a 3D view of the top.

[0031] Figure 11 This is a diagram of the internal structure of the top part.

[0032] Figure 12 This is an internal structural diagram of another top component.

[0033] Figure 13 It is a diagram showing the assembly of the detection device, the top assembly, and the ground rail assembly.

[0034] Figure 14 This is a 3D view of the ground rail assembly.

[0035] In the diagram, the components are: 1. Detection device; 2. Wheel seat; 3. Drive wheel; 4. Driven wheel; 5. Wheel drive device; 6. Water tank; 7. Probe seat; 8. Probe; 9. Elastic component; 10. Wheel seat base plate; 11. Wheel seat side plate; 12. Wheel drive motor; 13. Reducer; 14. Guide post; 15. Probe seat base plate; 16. Linear bearing; 17. Limiting plate; 18. Encoder housing; 19. Roller; 20. Fixing seat; 21. Base plate; 22. Fixing post; 23. Guide rail; 24. Electric cylinder; 25. Collection tank; 26. Top assembly; 27. Housing; 28. Top head; 29. ​​Top head bearing seat; 30. Connecting shaft; 31. Top plate; 32. Limiting wear-resistant plate; 33. Top drive device; 34. Shaft seat fixing plate; 35. Optical shaft; 36. Rail seat; 37. Ground rail; 38. Two crossbeams; 39. Longitudinal beam; 40. Rack; 41. Travel motor; 42. Gear; 43. Arc-shaped slot; 44. Shaft seat; 45. Limiting ring; 46. Slot. Detailed Implementation

[0036] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0037] Example 1: See Figures 1 to 14 The automatic ultrasonic testing equipment for hydraulic cylinder welds in this embodiment includes a testing device 1, which includes a support assembly and a probe assembly. The support assembly includes a wheel seat 2, a driving wheel 3, a driven wheel 4, and a wheel drive device 5 for driving the driving wheel to rotate. The driving wheel and the driven wheel are respectively mounted on the wheel seat by bearings, and the axis of rotation of the driving wheel is parallel to the axis of rotation of the driven wheel. The probe assembly includes a water tank 6, a probe seat 7 disposed in the water tank, and a probe 8 mounted on the probe seat. An elastic component 9 is disposed between the probe seat and the water tank, and the probe can extend out from the top opening of the water tank under the elastic force of the elastic component. At least one of the support assembly and the probe assembly is capable of being raised and lowered.

[0038] This automatic ultrasonic testing equipment for hydraulic cylinder welds includes a support assembly and a probe assembly. The support assembly supports the hydraulic cylinder via a drive wheel and a driven wheel mounted on a wheel seat. A wheel drive device drives the drive wheel to rotate, thus achieving rolling drive of the hydraulic cylinder. The probe seat of the probe assembly is connected to the water tank via an elastic component, allowing the probe at the top of the probe seat to extend from the top opening of the water tank. This ensures that the hydraulic cylinder on the support assembly can fit tightly against the probe, thereby improving the coupling between the probe and the hydraulic cylinder.

[0039] The support components allow the testing equipment to support various types of hydraulic cylinders without the need for head and tail chucks adapted to the cylinders. Furthermore, during testing, operators can adjust the axial position of the support components relative to the cylinder to ensure a reasonable distribution of the cylinder's weight, thereby reducing the impact of its weight on the end welds and preventing damage to the cylinder itself.

[0040] The probe assembly is designed to prevent interference with the probe during cylinder loading, thus avoiding damage to the probe and other components. Furthermore, placing the water tank below the cylinder allows for immersion testing, improving the coupling between the probe and cylinder. Compared to spray coupling, this method reduces water splashing during detection. Even if splashing occurs, the water flows into the water tank under gravity, enabling water recovery and circulation. Overall, the design is simpler and more reliable than the original equipment.

[0041] At least one of the support assembly and probe assembly can be raised or lowered, which allows the water tank or wheel seat to be adjusted in height over a wide range, so that the whole device can be adapted to hydraulic cylinders of different pipe diameters, thereby improving the versatility of the equipment.

[0042] The support device supports the hydraulic cylinder and drives it to roll, enabling the probe to scan the weld seam at its end. It includes a wheel seat and a driving wheel and a driven wheel mounted on the wheel seat. In this embodiment, the wheel seat includes a wheel seat base plate 10, with wheel seat side plates 11 fixed to its front and rear sides. The driving wheel and driven wheel are respectively positioned between the side plates, and their shafts are mounted on the wheel seat side plates via bearings at both ends. The driving wheel and driven wheel are spaced a certain distance apart, with the top of the driving wheel protruding from the top surface of the wheel seat side plate to support the hydraulic cylinder. The center of the top surface of the wheel seat side plate is also recessed downwards to avoid obstructing the hydraulic cylinder.

[0043] A wheel drive device is used to drive the drive wheel to rotate, which in turn drives the hydraulic cylinder on it to roll between the drive wheel and the driven wheel. Preferably, the wheel drive device includes a wheel drive motor 12, the output shaft of which is connected to the input shaft of a reducer 13. The reducer body is fixed to the wheel seat side plate, and its output end is connected to the rotating shaft of the drive wheel to drive the drive wheel to rotate. During operation, the hydraulic cylinder is hoisted into the gap between the drive wheel and the driven wheel. After loading, the circumferential surfaces of the drive wheel and the driven wheel are in close contact with the hydraulic cylinder. Driven by the wheel drive device, the drive wheel drives the hydraulic cylinder to roll on the surfaces of the drive wheel and the driven wheel. Because the hydraulic cylinder has a large self-weight, the gap between the drive wheel and the driven wheel is smaller than the cylinder pipe diameter. Under the drive of the drive wheel, it can always keep rolling in the gap between the drive wheel and the driven wheel so that the probe can detect it.

[0044] The probe assembly is used to detect the weld seam of the hydraulic cylinder. It is located on one side of the support assembly and includes a water tank and a probe inside the tank. The probe is mounted in the water tank via a probe holder. An elastic component, preferably a spring, is installed between the probe holder and the water tank to push the probe out of the opening at the top of the water tank. For details, see [link to details]. Figure 7 A guide post 14 is fixed to the bottom of the water tank. The top of the guide post passes through a linear bearing 16 on the probe base plate 15 and is connected to a limiting plate 17. A spring is sleeved on the guide post, with one end connected to the water tank and the other end connected to the bottom of the linear bearing. The linear bearing is fixedly installed on the probe base plate. During testing, the probe moves towards the water tank under the pressure of the hydraulic cylinder, thereby causing the probe base to move downward against the spring force until the probe is completely submerged in the water in the tank. At this point, the probe and the hydraulic cylinder are fully coupled.

[0045] To ensure better matching between the water tank and the hydraulic cylinder during testing, preferably, the top of the side plate of the water tank is provided with an arc-shaped groove 43 that is compatible with the hydraulic cylinder. This way, when the probe is fully pressed into the water tank by the hydraulic cylinder, its circumference can match the arc-shaped groove.

[0046] Furthermore, to prevent water from overflowing from both sides of the water tank during testing, slots 46 for installing sealing strips are provided on the surfaces of both the front and rear side panels of the water tank. The top of the sealing strip is slightly higher than the top surface of the slot. During operation, the hydraulic cylinder presses the sealing strip tightly against the surface of the side panels of the water tank, thereby preventing water from overflowing. Simultaneously, the sealing strip is a short, strip-shaped strip. Several strips are installed in the slot during use. The strip shape reduces the width of a single sealing strip, making its top end easy to bend and deform, thus adapting to hydraulic cylinders of different pipe diameters and improving its applicability.

[0047] To enable recording of defect locations, preferably, the reducer is equipped with an encoder assembly, as shown in the reference. Figure 4 The encoder assembly includes an encoder housing 18 fixed to the reducer, an encoder disposed inside the encoder housing, an encoder input shaft passing through the encoder housing and connected to a roller 19, and an encoder housing mounted on the reducer body via a mounting base 20. The encoder housing is rotatably connected to the mounting base, and an elastic element, such as a spring, is provided between the encoder housing and the mounting base to allow the roller to fit tightly against the hydraulic cylinder, thereby enabling the encoder to accurately record the distance of the hydraulic cylinder's rotation.

[0048] At least one of the support assembly and probe assembly can be raised and lowered under the drive of the lifting device to match the corresponding model of hydraulic cylinder.

[0049] In this embodiment, both the support assembly and the probe assembly are lifted and lowered by electric cylinders. For details, please refer to... Figure 3The detection device includes a base plate 21, with two parallel fixed posts 22 arranged on the surface of the base plate. Several guide rails 23 are vertically arranged on the surface of the fixed posts. The wheel seat 2 and the water tank 6 are respectively adapted to the guide rails on the surface of the fixed posts via sliders. Two sets of electric cylinders 24 are also arranged on the surface of the base plate. The bodies of the electric cylinders are fixed to the base plate. The output end of one electric cylinder is connected to the water tank, and the output end of the other electric cylinder is connected to the wheel seat. Driven by the electric cylinders, the height of the water tank and the wheel seat can be adjusted to match the corresponding hydraulic cylinders, facilitating weld seam detection of the hydraulic cylinders by the probe.

[0050] Before testing, the operator adjusts the height of the support assembly or probe assembly according to the model of the cylinder to be tested. The cylinder is then lifted by a robotic gripper onto the support assembly and gently placed on the surfaces of the drive and driven wheels. Under gravity, the cylinder rolls down into the gap between the drive and driven wheels, completing the loading process. At this point, the probe is directly below the cylinder's weld. During or after loading, the weld of the cylinder contacts the probe and gradually presses it into the water tank. Once loading is complete, the probe is fully submerged in the water. The drive wheel then rotates under the drive mechanism, causing the cylinder to slowly roll on the drive and driven wheels. As the cylinder rolls, the probe coupled to it can then inspect its weld.

[0051] Preferably, the probe assembly also includes a collection tank 25, in which a water tank is disposed, and both the water tank and the collection tank are made of transparent plastic.

[0052] The collection tank allows water overflowing or splashing from the main tank to be collected, preventing it from affecting other electrical components inside the cabinet and facilitating water recycling. The use of transparent plastic for both the main tank and the collection tank allows operators to observe the internal conditions of the tank in real time during testing.

[0053] Specifically, the inner cavity of the water tank is connected to an external water source. Before testing, a water pump pumps external water into the water tank. During testing, the probe is pressed into the water tank, and some water overflows from the edge of the tank and flows into a collection tank. The water in the collection tank can be pumped by an external water pump to a predetermined container for recycling. For easy observation, the water tank and collection tank can be made of transparent acrylic plastic sheets.

[0054] Preferably, the automatic ultrasonic testing equipment for hydraulic cylinder welds also includes two sets of mandrel assemblies 26, which are respectively arranged on the left and right sides of the testing device 1. Each mandrel assembly includes a housing 27 and a mandrel 28. A mandrel bearing seat 29 is provided on the housing. The mandrel includes a connecting shaft 30 and a top plate 31 fixed to the end of the connecting shaft. A limit wear-resistant plate 32 is provided on the surface of the top plate. The connecting shaft is installed in the mandrel bearing seat 29 through a bearing. At least one of the two mandrel assemblies also includes a mandrel drive device 33. The body of the mandrel drive device is fixed on the housing, and its output shaft is fixed to the mandrel bearing seat.

[0055] The two sets of mandrel assemblies enable the positioning of the hydraulic cylinder, thereby improving its rolling stability and ensuring the quality of the probe's inspection of the weld.

[0056] The housing is used to install components such as the mandrel, which is used for axial positioning and limiting of the hydraulic cylinder. The mandrel bearing housing is used to mount the connecting shaft of the mandrel, and the top plate is used to clamp the hydraulic cylinder to prevent it from shifting during rolling. The mandrel drive device is used to drive the top plate to move, thereby allowing the hydraulic cylinder between the two top plates to be clamped. The limiting wear-resistant plate on the surface of the top plate increases the friction between the top plate and the end of the hydraulic cylinder to prevent slippage between them.

[0057] In this embodiment, one top-mount assembly includes a top-mount drive device, the body of which is fixed to the inner side of the housing. Its output shaft passes through the housing and is fixed to the shaft seat fixing plate 34. The aforementioned top-mount bearing seat 29 is fixed to the shaft seat fixing plate. To achieve stable movement of the top plate, several optical shafts 35 are provided on the shaft seat fixing plate, and several linear bearings that cooperate with the optical shafts are fixed on the housing. One end of the optical shaft is fixed to the shaft seat fixing plate via the shaft seat 44, and the other end passes through the linear bearing on the housing and is connected to the limiting ring 45. The top-mount bearing seat of the other top-mount assembly is directly fixed to the inner wall of the housing.

[0058] During operation, the hydraulic cylinder, driven by the support assembly, rises and falls to the same height as the top plate, positioned between the top plates of the two mandrel assemblies. Then, one of the top plates moves towards the end of the hydraulic cylinder under the drive of the top plate drive device until the hydraulic cylinder is clamped between the two top plates. After the hydraulic cylinder is positioned and clamped, the drive wheel rotates under the drive of the wheel drive device, thereby driving the hydraulic cylinder to roll. As the hydraulic cylinder rolls, it drives the top plates at both ends to rotate. In this way, the top plates on both sides can still axially limit the hydraulic cylinder while it rotates, preventing it from shifting. At the same time, it can also prevent the hydraulic cylinder from jumping or shaking during rolling, so that the probe can always maintain a tight coupling with the hydraulic cylinder, ensuring the stability and accuracy of weld inspection. In addition, the static friction between the limiting wear-resistant plate and the hydraulic cylinder also reduces the pressure of the hydraulic cylinder on the drive wheel and driven wheel to a certain extent, thereby reducing the power requirements of the wheel drive device and improving its applicability.

[0059] Preferably, the automatic ultrasonic testing equipment for hydraulic cylinder welds also includes a ground rail assembly, which includes a rail base 36 and a ground rail 37 disposed on the surface of the rail base. The testing device also includes a base plate 21 that slides with the ground rail. The support assembly and the water tank assembly are both disposed on the base plate. The housing of at least one of the two sets of top assembly is slidably engaged with the ground rail via a slider.

[0060] This design allows operators to quickly and extensively adjust the position of the mandrel assembly and detection device according to the cylinder model to match the cylinder of the corresponding length.

[0061] The rail base is used to install the ground rails. In this embodiment, the rail base consists of two horizontal beams 38 and several longitudinal beams 39 connecting the two horizontal beams. The two ground rails 37 are respectively fixed to the surfaces of the front and rear horizontal beams. The base plate is used to install the support assembly and the water tank assembly. The aforementioned fixing column and electric cylinder are all fixed to the surface of the base plate by bolts.

[0062] In this embodiment, the bottom surface of the base plate and one of the top-end components slides with the ground rail via a slider, thereby facilitating the operator to adjust their position. The housing of the other top-end component is fixed to the end of the rail base with bolts.

[0063] Preferably, a rack 40 parallel to the ground rail is fixed on the rail base, and a walking motor 41 is provided on the housing of the base plate and one of the top components. The body of the walking motor is fixed to the bottom plate surface of the base plate or the housing. The output shaft of the walking motor passes through the base plate or the bottom plate of the housing and is connected to a gear 42. The gear meshes with the rack.

[0064] The gears, racks, and walking motor enable the automatic movement of the detection device and the mandrel assembly, allowing the system to automatically adjust the position of the detection device and the mandrel assembly according to the cylinder model, thereby further improving the system's automation level.

[0065] Preferably, the number of detection devices is two sets, the base plates of the two sets of detection devices are respectively slidably engaged with the ground rail by sliders, and the two sets of detection devices are arranged between the two sets of top assemblies.

[0066] The two sets of top-end components further improve the equipment's support effect on the hydraulic cylinder, preventing overturning due to uneven gravity distribution during testing of excessively long hydraulic cylinders. At the same time, the two sets of testing devices can simultaneously test both ends of the hydraulic cylinder, thereby improving the testing efficiency of the hydraulic cylinder.

[0067] Before loading, a set of mandrel components and two sets of detection devices automatically adjust to predetermined positions under the drive of their respective travel motors, according to the specific model of the hydraulic cylinder. Simultaneously, the support components adjust to a predetermined height under the drive of the electric cylinder, also according to the hydraulic cylinder model. During loading, the hydraulic cylinder is hoisted onto the support components. At this time, the two sets of detection devices are located at the left and right ends of the hydraulic cylinder, respectively, to provide stable support. After the hydraulic cylinder is in position, one of the movable mandrel components moves along the ground rail towards the hydraulic cylinder under the drive of the travel motor until both ends of the hydraulic cylinder contact the limiting wear-resistant plates of the mandrel components at both ends. Then, the limiting wear-resistant plate of one of the mandrel components continues to move towards the end of the hydraulic cylinder under the drive of the mandrel drive device until the hydraulic cylinder is clamped between the two limiting wear-resistant plates. During this process, the water tank assembly rises upwards under the drive of the electric cylinder until the probe is pressed into the water tank by the hydraulic cylinder and tightly coupled with the hydraulic cylinder. The rear wheel drive device then drives the drive wheel to rotate, which in turn drives the hydraulic cylinder on it to roll on the drive wheel and the driven wheel. At the same time, the probe can perform flaw detection on the weld seam of the hydraulic cylinder. After the inspection is completed, all components are reset to prepare for the next inspection.

[0068] As can be seen from the above description, compared with existing testing equipment, this automatic ultrasonic testing equipment for hydraulic cylinder welds achieves support and positioning of the hydraulic cylinder through a support device. While aligning the two ends of the hydraulic cylinder with the corresponding mandrels, it avoids the influence of the cylinder's own weight on its weld. The probe assembly located below the hydraulic cylinder also avoids interference between the probe and the gripper and the cylinder during loading. The water tank not only improves the coupling effect between the probe and the hydraulic cylinder, but its cooperation with the collection tank also prevents splashing water from affecting other components during testing, and facilitates water recovery by the system. The two sets of mandrel assemblies achieve limiting and securing of the hydraulic cylinder, thereby ensuring that the hydraulic cylinder can roll stably under the drive of the drive wheel, thus improving the stability and reliability of probe testing.

[0069] The above description is merely a preferred embodiment of the present invention, used to assist those skilled in the art in implementing the corresponding technical solutions, and is not intended to limit the scope of protection of the present invention. The scope of protection of the present invention is defined by the appended claims. It should be noted that, for those skilled in the art, several equivalent improvements and modifications can be made based on the technical solutions of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Furthermore, it should be understood that although this specification describes the embodiments as described above, not every embodiment contains only one independent technical solution. This descriptive method is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions of each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic ultrasonic testing device for hydraulic cylinder welds, comprising a testing device (1), characterized in that: The detection device includes a support assembly and a probe assembly; The support assembly includes a wheel seat (2), a driving wheel (3), a driven wheel (4), and a wheel drive device (5) for driving the driving wheel to rotate. The driving wheel and the driven wheel are respectively mounted on the wheel seat by bearings, and the axis of rotation of the driving wheel is parallel to the axis of rotation of the driven wheel. The probe assembly includes a water tank (6), a probe seat (7) disposed in the water tank, and a probe (8) mounted on the probe seat. An elastic component (9) is provided between the probe seat and the water tank, and the probe can extend out from the top opening of the water tank under the elastic force of the elastic component. At least one of the support assembly and the probe assembly is capable of being raised and lowered.

2. The automatic ultrasonic testing equipment for hydraulic cylinder welds according to claim 1, characterized in that: The probe assembly also includes a collection tank (25), the water tank being disposed inside the collection tank, and both the water tank and the collection tank being made of transparent plastic.

3. The automatic ultrasonic testing equipment for hydraulic cylinder welds according to claim 1, characterized in that: It also includes two sets of top head assemblies (26), which are respectively set on the left and right sides of the detection device. The top head assembly includes a housing (27) and a top head (28). The housing is provided with a top head bearing seat (29). The top head includes a connecting shaft (30) and a top plate (31) fixed to the end of the connecting shaft. The surface of the top plate is provided with a limit wear-resistant plate (32). The connecting shaft is installed in the top head bearing seat through a bearing. In the two sets of top head assemblies, at least one top head assembly also includes a top head drive device (33). The body of the top head drive device is fixed on the housing, and its output shaft is fixed to the top head bearing seat.

4. The automatic ultrasonic testing equipment for hydraulic cylinder welds according to claim 3, characterized in that: It also includes a ground rail assembly, which includes a rail base (36) and a ground rail (37) disposed on the surface of the rail base. The detection device also includes a base plate that slides with the ground rail. The support assembly and the water tank assembly are both disposed on the base plate. The housing of at least one of the two sets of top assemblies slides with the ground rail via a slider.

5. The automatic ultrasonic testing equipment for hydraulic cylinder welds according to claim 4, characterized in that: A rack (40) parallel to the ground rail is also fixed on the rail base. A walking motor (41) is provided on the box of the base plate and one of the top components. The body of the walking motor is fixed to the bottom plate surface of the base plate or the box. The output shaft of the walking motor passes through the base plate or the bottom plate of the box and is connected to a gear (42). The gear meshes with the rack.

6. The automatic ultrasonic testing equipment for hydraulic cylinder welds according to claim 5, characterized in that: The number of detection devices is two sets, and the base plates of the two sets of detection devices are respectively slidably engaged with the ground rail by sliders, and the two sets of detection devices are arranged between the two sets of top assemblies.

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