Hydraulic cylinder valve port flow channel fluid impact wear prediction detection tool and detection method

Abstract

The application relates to the field of hydraulic element wear detection, and discloses a hydraulic cylinder valve port flow channel fluid impact wear prediction detection tool and a detection method, wherein the detection tool comprises a base, a height adjusting mechanism for adjusting the height of the base and two detectors; two slide tables symmetrically arranged on the base are provided with positioning assemblies corresponding to the positions of valve bodies and control assemblies for driving the positioning assemblies; and the two detectors are respectively installed on the two positioning assemblies. Through cooperation between the base, the slide tables, the positioning assemblies and the control assemblies, the positioning assemblies can be driven to horizontally approach the valve bodies first, so that the positioning assemblies and the central axes of the valve bodies are quickly overlapped, then the positioning assemblies can be driven to move along the circumferential direction of the valve bodies, at this time, the detectors can be synchronously moved to realize comprehensive and effective detection of the valve ports.

Description

Technical Field

[0001] This invention relates to the field of hydraulic component wear detection technology, and in particular to a tooling and method for predicting and detecting fluid impact wear in hydraulic cylinder valve passages. Background Technology

[0002] During long-term operation, wear on the valve body of the hydraulic cylinder can cause variations in the inner diameter of different parts of the valve body, resulting in poor overall sealing and unstable movement. In subsequent testing, some valve bodies are heavy and difficult to move. Therefore, it is crucial to quickly align the testing fixture with the central axis of the valve body, as this directly affects the speed of subsequent testing and the accuracy of the test results.

[0003] For example, Chinese Patent Publication No. CN210512948U discloses a testing device for a hydraulic cylinder body, belonging to the field of hydraulic cylinder testing technology. It includes a pipe, a positioning mechanism, and a cylinder body component. The pipe is located inside the cylinder body component, and the positioning mechanism is connected to the outside of the pipe and the cylinder body component. A branch pipe is connected to the outer wall of the pipe, and a moving rod is slidably connected to the inner wall of the pipe. A groove is carved into the outer wall of the moving rod, and a rack is connected to the inner wall of the groove. A single gear is meshed with the rack, and a rotating shaft is connected to the outer wall of the single gear. A knob is connected to the end of the rotating shaft away from the single gear. A first wedge block is connected to the end of the moving rod away from the rack, and a second wedge block that cooperates with the first wedge block is slidably connected to the inner wall of the branch pipe. An arc-shaped plate is connected to the end of the second wedge block away from the first wedge block, and the arc-shaped plate abuts against the inner wall of the cylinder body component. By rotating the knob, the arc-shaped plate is controlled to fit against the inner wall of the cylinder body component, checking the wear condition of the inner wall of the cylinder body and determining whether the cylinder body can continue to be used.

[0004] This application achieves alignment between the rings and the central axis of the cylinder by adjusting the positions of two rings and moving multiple studs along the rings. However, the process of aligning the central axis of the cylinder and the subsequent wear detection of the cylinder bore are cumbersome, requiring repeated movement of multiple structures for coordination, resulting in low detection efficiency and certain limitations in application.

[0005] Therefore, it is necessary to provide a tooling and method for predicting and detecting fluid impact wear in the flow channel of a hydraulic cylinder valve to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a tooling and method for predicting and detecting fluid impact wear in the flow channel of a hydraulic cylinder valve, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, a hydraulic cylinder valve port flow channel fluid impact wear prediction and detection tooling and method is designed that can automatically align the central axis quickly near the valve body and then move along the circumferential direction of the valve port to complete the detection.

[0008] Based on the above ideas, the present invention provides the following technical solution: a hydraulic cylinder valve port flow channel fluid impact wear prediction and detection fixture, including a base, a height adjustment mechanism for adjusting the height of the base, and two detectors. The base is provided with two symmetrically distributed slides. The slides are provided with positioning components corresponding to the valve body position and a control component for driving the positioning components. The two detectors are respectively installed on the two positioning components. Activating the control component can drive the positioning components and detectors to move horizontally. When both positioning components are in contact with the valve body, the control component can drive the detectors to move along the circumferential direction of the valve port through the positioning components.

[0009] As a further aspect of the present invention: the positioning component includes a support rod driven by a control component and a gear ring fixedly mounted on a base. The end of the support rod is rotatably mounted with a clamping plate corresponding to the position of the valve body, and the outer surface of the support rod is fixedly mounted with a gear corresponding to the position of the gear ring.

[0010] As a further aspect of the present invention, the clamping plate is also provided with a retaining member, which enables the clamping plate to remain vertical when it moves along the axial direction of the support rod.

[0011] As a further aspect of the present invention: the retaining member includes a first telescopic rod fixedly installed on the clamping plate and an annular groove formed on the inner wall of the base, wherein the end of the first telescopic rod is slidably engaged in the annular groove.

[0012] As a further embodiment of the present invention: the control component includes a cylinder fixedly installed in the slide table and a shaft slidably installed in the slide table. The output shaft of the cylinder is fixedly installed with a partition plate that movably fits against the shaft. The partition plate is movably embedded with a slider that slidably engages with the outer surface of the shaft. The end of the shaft is fixedly installed with a round plate with an ear that is fixedly connected to the support rod.

[0013] As a further aspect of the present invention: the outer surface of the shaft is provided with a spiral groove for the slider to slide and engage, and the inside of the slide table is provided with a transverse groove and two grooves for the lug plate to slide. The transverse groove is located in the middle of the two grooves and is connected to both grooves. When the slider is located at the beginning and end of the spiral groove, the lug plate is horizontally aligned with the transverse groove.

[0014] As a further aspect of the present invention: the bottom of the slide table is provided with a cavity, and a slide rod and a top seat are slidably installed inside the cavity. A spring is fixedly installed between the slide rod and the top seat. The top of the slide rod extends out of the cavity and corresponds to the position of the lug plate. A step is provided on the side of the cavity near the base. The top seat is located in the step and its bottom abuts against the base. Both sides of the cavity are provided with bevels. A column head corresponding to the position of the bevel is rotatably installed on the surface of the slide rod.

[0015] As a further aspect of the present invention: the top of the slide rod is T-shaped, and an inclined spring is also provided inside the cavity. The two ends of the inclined spring are fixedly connected to the top seat and the cavity, respectively. When the inclined spring is tilted to either side, the T-shaped top of the slide rod can abut against the side wall of the lug plate.

[0016] As a further embodiment of the invention: the gear is located outside the gear ring and the lug plate is located inside the groove away from the base.

[0017] The present invention also provides the following technical solution: a method for predicting and detecting fluid impact wear in the flow channel of a hydraulic cylinder valve, wherein the base is placed on the valve body and the height adjustment mechanism is used to make the base correspond to the valve body, then the control component is started to drive the positioning component and the detector to move horizontally until both positioning components are in contact with the valve body, then the detector is adjusted to fit the valve port, and finally the control component is started to drive the detector to move along the circumferential direction of the valve port through the positioning component to complete the detection.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: through the cooperation between the base, slide, positioning component and control component, the positioning component can be driven to move horizontally close to the valve body first, so that the positioning component and the central axis of the valve body can be quickly aligned. Then, the positioning component can be driven to move along the circumferential direction of the valve body. At this time, the detector can move synchronously, thereby realizing a comprehensive and effective detection of the valve port. The overall detection process is simplified, the overall detection efficiency can be effectively improved, and the detection effect of the valve port can be guaranteed. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 This is a perspective view of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of the slide table of the present invention;

[0022] Figure 3 This is a schematic diagram of the control component structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the annular groove and the first telescopic rod structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the eared circular plate and shaft structure of the present invention;

[0025] Figure 6 This is a schematic diagram of the cavity, step, and top seat structure of the present invention;

[0026] Figure 7 for Figure 6 Enlarged view of the structure at point A in the middle;

[0027] Figure 8 This is a schematic diagram of the sleeve and round rod structure of the present invention;

[0028] Figure 9 This is a schematic diagram of the clamping plate and the second telescopic rod structure of the present invention;

[0029] Figure 10 This is a schematic diagram of the gear and gear ring structure of the present invention.

[0030] In the diagram: 1. Base; 2. Detector; 3. Slide table; 4. Positioning assembly; 5. Control assembly; 6. Holder; 7. Top seat; 8. Slide rod; 9. Column head; 201. Cantilever; 301. Groove; 302. Horizontal groove; 303. Cavity; 304. Angled angle; 305. Step; 401. Support rod; 402. Gear ring; 403. Clamping plate; 404. Gear; 4011. Sleeve; 4012. Round rod; 501. Cylinder; 502. Shaft; 503. Partition plate; 504. Round plate with lugs; 505. Spiral groove; 506. Slider; 601. First telescopic rod; 602. Annular groove; 603. Second telescopic rod. Detailed Implementation

[0031] Example 1:

[0032] Please see Figures 1 to 8 This invention provides a hydraulic cylinder valve port flow channel fluid impact wear prediction and detection fixture, mainly used to achieve comprehensive and effective detection of valve port dimensions and significantly improve overall detection efficiency. Specifically, it includes a base 1 and a detector 2. A height adjustment mechanism (not shown in the figure) is provided below the base 1 to drive the base 1 to rise and fall. The height adjustment mechanism can quickly move the base 1, thereby raising and lowering it to correspond with the valve port. Once the base 1 corresponds with the valve port, the detector 2 is adjusted to fit against the valve port surface, thus quickly obtaining the specific dimensions of the valve port.

[0033] In this embodiment, the detector 2 can be a micrometer or a profilometer, and then obtain the corresponding parameters after it is in contact with the valve port; wherein, the detector 2 and the height adjustment mechanism are existing mature technologies, and will not be described in detail here.

[0034] Furthermore, such as Figure 1 and Figure 2As shown, two symmetrically distributed slides 3 are movably mounted on the base 1. Each slide 3 has a positioning component 4 corresponding to the valve body position and a control component 5 for driving the positioning component 4. Correspondingly, there are two detectors 2, each mounted on one of the two positioning components 4. When the control component 5 is activated, it can drive the positioning component 4 and the detector 2 to synchronously approach the valve body. When both positioning components 4 are in contact with the outer surface of the valve body, the positioning component 4 coincides with the central axis of the valve body, as does the base with the central axis of the valve body. Then, further activation of the control component 5 can drive the detector 2 to move half a circle around the valve port via the positioning component 4. The two positioning components 4 drive the two detectors 2 to rotate half a circle each, thus completing a full and effective detection of the entire valve port.

[0035] In the above process, such as Figure 2 As shown, when the control component 5 is activated, it drives the positioning component 4 and the detector 2 to move closer to the valve body. The slide 3 remains stationary on the base 1 and maintains its initial position. When the control component 5 is activated again, it drives the detector 2 to rotate along the valve port through the positioning component 4. The slide 3 will move accordingly along the circumferential direction of the base 1.

[0036] Reference Figures 2 to 4 In this embodiment, preferably, the positioning component 4 includes a support rod 401 driven by the control component 5 and a gear ring 402 fixedly installed on the base 1. The end of the support rod 401 away from the control component 5 is rotatably mounted with a clamping plate 403 corresponding to the position of the valve body. The outer surface of the support rod 401 is fixedly mounted with a gear 404 corresponding to the position of the gear ring 402. In the initial state, the gear 404 and the gear ring 402 are misaligned and have no meshing contact. After the control component 5 drives the gear 404 to move through the support rod 401, the gear 404 can engage with the gear ring 402.

[0037] In this embodiment, as Figure 2 As shown, in the initial state, gear 404 is located outside of gear ring 402. When control component 5 is activated, it can drive gear 404 and clamping plate 403 to move to the left through support rod 401, and then gradually approach the valve body, so that the surface of clamping plate 403 away from support rod 401 can contact the outer surface of valve body.

[0038] Correspondingly, such as Figure 2As shown, the clamping plate 403 and the detector 2 move synchronously via the cantilever 201. The cantilever 201 can adjust the direction and position of the detector 2, thereby adjusting the position of the detector 2 after the clamping plate 403 contacts the valve body to make it contact the valve port in preparation for wear detection. To ensure that the clamping plate 403 does not cause the valve body to shift or become misaligned when it moves the detector 2 via the cantilever 201, several ball bearings (not shown in the figure) are movably installed on the surface of the clamping plate 403 that contacts the valve body. At this time, the contact between the clamping plate 403 and the valve body can still ensure the coincidence of the central axis and will not affect the smooth movement of the clamping plate 403 along the surface of the valve body. Of course, the valve body itself is also quite heavy and sits vertically on the worktable, so it can also be stabilized by hand during the detection process. The cantilever 201 and the ball bearings mentioned above are existing mature technologies and will not be described in detail here.

[0039] Among them, such as Figure 3 As shown, since the support rod 401 and the clamping plate 403 are rotatably connected, a retaining member 6 is provided on the clamping plate 403 to prevent the clamping plate 403 from deflecting. In this embodiment, the retaining member 6 includes a first telescopic rod 601 fixedly installed on the clamping plate 403 and an annular groove 602 formed in the inner wall of the base 1. The end of the first telescopic rod 601 is slidably engaged in the annular groove 602. The first telescopic rod 601 allows the clamping plate 403 to move in the radial direction of the base 1, and the annular groove 602 and the first telescopic rod 601 allow the clamping plate 403 to move in the circumferential direction of the base 1. Through the above design, the deflection and misalignment of the clamping plate 403 can be effectively prevented when the support rod 401 moves the clamping plate 403, and the contact interference between the detector 2 and the valve body can also be avoided.

[0040] Reference Figures 3 to 5 In this embodiment, preferably, the control component 5 includes a cylinder 501 fixedly installed in the slide table 3 and a shaft 502 slidably installed in the slide table 3. The output shaft of the cylinder 501 is fixedly mounted with a partition 503 that movably fits against the outer surface of the shaft 502. A slider 506 is movably embedded inside the partition 503 and slidably engaged with the outer surface of the shaft 502. An eared circular plate 504 is fixedly installed at the end of the shaft 502 away from the cylinder 501 and fixedly connected to the support rod 401. When the cylinder 501 is started, the eared circular plate 504 and the support rod 401 can be synchronously translated through the partition 503 and the slider 506. When the eared circular plate 504 abuts against the slide table 3 and can no longer move, the start of the cylinder 501 can drive the eared circular plate 504 and the support rod 401 to rotate synchronously through the partition 503 and the slider 506.

[0041] Correspondingly, such as Figure 3As shown, the eared circular plate 504 is specifically a circular plate with lugs on its outer surface. In this embodiment, there are two lugs that are symmetrically distributed. Furthermore, the slide table 3 has a transverse groove 302 and two grooves 301 inside for the eared circular plate 504 to slide. The transverse groove 302 is located between the two grooves 301 and is connected to both grooves 301. The lugs can be translated from one groove 301 to the other groove 301 through the transverse groove 302. The eared circular plate 504 can rotate in both grooves 301. When the eared circular plate 504 is in the transverse groove 302, the lugs are limited, and the eared circular plate 504 can only translate and cannot rotate.

[0042] Among them, such as Figure 3 As shown, the outer surface of the shaft 502 is provided with a spiral groove 505 for the slider 506 to slide and engage. When the slider 506 moves along the spiral groove 505, if the shaft 502 can no longer move along its axial direction, the slider 506 and the spiral groove 505 can drive the shaft 502 and the lug plate 504 to rotate. In this embodiment, the rotation of the lug plate 504 is transmitted to the gear 404 through the support rod 401. Thus, when the shaft 502 and the lug plate 504 rotate, the gear 404 and the gear ring 402 can drive the support rod 401 to move half a turn in the circumferential direction of the base 1.

[0043] Furthermore, such as Figure 3 As shown, the spiral groove 505 is defined based on the start and end points of the shaft 502, so that when the slider 506 is located at the start and end points of the spiral groove 505, the lugs are in a front-to-back correspondence with the circular plate, thus forming a left-to-right horizontal correspondence with the transverse groove 302. At this time, the lug-bearing circular plate 504 can smoothly switch between the groove 301 and the transverse groove 302. At the same time, a chamfer can also be made on the transverse groove 302 to facilitate the lug-bearing circular plate 504 to enter the transverse groove 302 from the groove 301. It should be noted that the friction between the slider 506 and the spiral groove 505 is configured to be relatively large, so that when the cylinder 501 drives the side plate 503 and the slider 506 to move, the slider 506 will not immediately drive the shaft 502 to rotate through the spiral groove 505. Only when the lug-bearing circular plate 504 is limited by the slide table 3 can the slider 506 move along the spiral groove 505 and drive the shaft 502 to rotate.

[0044] Furthermore, such as Figure 6 and Figure 7As shown, a cavity 303 is also provided at the bottom of the slide table 3. A slide rod 8 and a top seat 7 are slidably installed inside the cavity 303. A spring is fixedly installed between the slide rod 8 and the top seat 7. Under the action of the spring, the slide rod 8 and the top seat 7 tend to move away from each other. The slide rod 8 and the top seat 7 can slide horizontally along the cavity 303 or slide up and down along the cavity 303. Of course, the slide rod 8 and the top seat 7 will not detach from the cavity 303. Correspondingly, the top of the slide rod 8 extends out of the cavity 303 and corresponds to the position of the lug plate 504. When the lug plate 504 moves, it can push the slide rod 8 to move horizontally along the cavity 303. The bottom of the top seat 7 corresponds to the bottom of the cavity 303. At this time, the top seat 7 can also descend relatively under the action of the spring and press down on the base 1. At the same time, a step 305 is provided on the side of the cavity 303 near the base 1. The step 305 is designed in a Z shape. When the slide rod 8 moves and drives the top seat 7 to move synchronously, the top seat 7 moves horizontally and rises along the step 305 and compresses the spring.

[0045] With the above design, when the lug plate 504 is not moving horizontally, the top seat 7 can extend from the cavity 303 to press down on the base 1, thereby preventing the slide table 3 from sliding off the base 1 and ensuring the overall stability of the slide table 3 based on the base 1; when the lug plate 504 moves, it can drive the bottom top seat 7 to move along the step 305, thereby relieving the pressing effect of the top seat 7 on the base 1. At this time, if the gear 404 meshes with the gear ring 402, the slide table 3 can move smoothly circumferentially along the base 1.

[0046] To prevent the slide rod 8 from interfering with the lug plate 504 entering the groove 301, bevels 304 are provided on both sides of the cavity 303. A column head 9 is rotatably installed on the front or rear side of the slide rod 8. The column head 9 has a circular design. When it contacts the bevel 304, it can drive the slide rod 8 to descend vertically along the cavity 303. After the slide rod 8 descends along the cavity 303, the lug plate 504 can smoothly enter the groove 301, thereby avoiding interference between the two and ensuring the smooth progress of the overall working process.

[0047] In the above structure, such as Figure 6 and Figure 7 As shown, the top of the slide rod 8 can also be T-shaped, and the cavity 303 is also provided with an inclined spring. The two ends of the inclined spring are fixedly connected to the top seat 7 and the cavity 303 respectively. When the inclined spring is tilted to the upper right, the top seat 7 drives the slide rod 8 to move to the right. At this time, the T-shaped top of the slide rod 8 can also abut against the left side wall of the lug plate 504. When the inclined spring is tilted to the upper left, the top seat 7 drives the slide rod 8 to move to the left. At this time, the T-shaped top of the slide rod 8 can also abut against the right side wall of the lug plate 504.

[0048] Through the above design, the tilting spring helps to maintain the stability of the top seat 7 in the cavity 303 and the step 305. On the other hand, it makes the slide rod 8 exert lateral pressure on the lug plate 504, which can ensure that the lug plate 504 can smoothly move from the groove 301 to the transverse groove 302. Furthermore, it allows the lug plate 504 to quickly contact the slide rod 8 to improve the linkage speed.

[0049] Of course, in practical applications, the travel distance of the support rod 401 along the base 1 can be increased accordingly, such as by one revolution, one and a half revolutions, or two revolutions, as long as it is an integer multiple of half a revolution. This allows for multiple detection values ​​corresponding to half a revolution of the valve port, satisfying subsequent comparison and reference needs, further ensuring the detection effect of the valve port, and avoiding false detections and missed detections that occur when the detector 2 only rotates half a revolution.

[0050] In the above structure, such as Figure 5 As shown, for ease of description of the working principle, the groove 301 closer to the detector 2 is named the inner groove 301, and the groove 301 farther from the detector 2 is named the outer groove 301. In the initial state, the lug plate 504 is located inside the outer groove 301. At this time, the lug plate 504 drives the gear 404 through the support rod 401, which is also located on the outside of the gear ring 402. Correspondingly, the translational stroke of the clamping plate 403 is equal to the movement dimension of the lug plate 504 along the transverse groove 302 and the inner groove 301. That is, the distance between the clamping plate 403 and the outer surface of the valve body needs to be equal to the sum of the lengths of the transverse groove 302 and the inner groove 301 along the axial direction of the shaft 502. Thus, after the lug plate 504 moves from the outer groove 301 to the inner groove 301, the clamping plate 403 can contact the outer surface of the valve body.

[0051] Reference Figure 8 In this embodiment, preferably, the support rod 401 can be improved into a sleeve 4011 fixedly connected to the lug plate 504. The sleeve 4011 has a threaded connection to a round rod 4012 that rotatably engages with the clamping plate 403. The gear 404 is fixedly installed on the outer surface of the sleeve 4011. Through the above design, the distance between the round rod 4012 and the sleeve 4011 can be adjusted accordingly. Combined with the movement stroke of the lug plate 504 driving the sleeve 4011 and the gear 404, the clamping plate 403 can be further adapted to valve bodies of different sizes, thereby making the detector 2 applicable to the detection of valve ports of more sizes, effectively improving the overall applicability.

[0052] In use, the valve body is placed vertically and the base 1 is placed inside the valve body from top to bottom. At the same time, the height of the base 1 is fixed by the height adjustment mechanism. The starting cylinder 501 drives the lug plate 504, support rod 401, gear 404 and clamping plate 403 to move towards the center through the partition plate 503, slider 506, spiral groove 505 and shaft 502 until both clamping plates 403 are in contact with the outer surface of the valve body. At this time, the central axes of the two clamping plates 403, the base 1 and the valve body are all coincident. During this process, the lug plate 504 moves from the outer groove 301 to the inner groove 301 from the transverse groove 302, and the lug plate 504 abuts against the inner wall of the slide table 3 and can no longer move. At the same time, the gear 404 and the gear ring 402 engage for transmission. Next, the position of the detector 2 is adjusted by the cantilever 201 so that it fits against the surface of the valve port. Then, the cylinder 501 continues to start, driving the shaft 502, the lug plate 504, the support rod 401 and the gear 404 to rotate through the partition 503, the slider 506 and the spiral groove 505. Under the action of the gear ring 402, the gear 404 can drive the slide table 3 to move along the circumferential direction of the base 1 through the support rod 401, thereby causing the detector 2 to move half a circle along the circumferential direction of the valve port. After the two detectors 2 move half a circle each, the combined movement can achieve a comprehensive and effective detection of the valve port.

[0053] It should be noted that during the process of the clamping plates 403 approaching the valve body surface and aligning their central axes, since the central axes of the base 1 and the valve body may initially be misaligned, the two clamping plates 403 may not simultaneously contact the valve body surface. The clamping plate 403 that contacts the valve body first may move in opposite directions until both clamping plates 403 are in contact with the valve body surface. During this process, the base 1 will experience a small positional shift, which can be mitigated by manually assisting the rapid movement of the base 1 to reduce the impact of its gravity and ensure rapid alignment of the central axes. Subsequently, when both clamping plates 403 are in contact with the valve body surface and the gear 404 rotates along the gear ring 402, the base 1 and the symmetrically distributed slides 3 mounted on it provide stable gravity support, preventing the base 1 from shifting or misaligning during the rotation of the gear 404.

[0054] In summary, through the cooperation of structures such as shaft 502, lug plate 504, support rod 401, and gear 404, the clamping plate 403 can be driven to move horizontally close to the valve body, so that the central axis of the valve body and the clamping plate 403 can be quickly aligned. Then, the clamping plate 403 can be driven to move along the circumferential direction of the valve body. At this time, the detector 2 can move synchronously, thereby realizing a comprehensive and effective detection of the valve port. The overall detection process is simplified, which can effectively improve the overall detection efficiency and ensure the detection effect of the valve port.

[0055] When the gear 404 can rotate along the gear ring 402 by an integer multiple of half a turn through the slider 506 and the spiral groove 505, the detector 2 can continuously detect the specific parameters of two half turns, thereby obtaining multiple detection values ​​of the data corresponding to half a turn of the valve port. This can meet the needs of subsequent comparison and reference, further ensure the detection effect of the valve port, and avoid false detection and missed detection when the detector 2 only rotates half a turn.

[0056] Meanwhile, by adjusting the structure of the support rod 401, the lug plate 504 can move the clamping plate 403 by different strokes when it moves, so that the clamping plate 403 can contact the outer surface of the valve body of different sizes, and the detector 2 can contact the valve port of different sizes, which can effectively improve the overall applicability and practicality.

[0057] Example 2:

[0058] Please see Figures 1 to 10 Based on Embodiment 1, to further improve applicability and ensure the detection effect on the valve port, the initial positions of the clamping plate 403, gear 404, and lug plate 504 are adjusted: In this initial state, the lug plate 504 is located in the inner groove 301, and the gear 404 is located inside the gear ring 402; correspondingly, when the cylinder 501 is started, the shaft 502 and lug plate 504 can be driven to translate first through the partition 503, slider 506, and spiral groove 505, so that the lug plate 504 moves from the inner groove 301 to the outer groove 301 from the transverse groove 302, and then the shaft 502 and lug plate 504 begin to rotate. In this embodiment, since the two clamping plates 403 are relatively far apart, the ball bearings also need to be adjusted to the outer surface of the clamping plate 403 accordingly; at the same time, the arrangement positions of the top seat 7 and the step 305 based on the cavity 303 also need to be reversed.

[0059] With the above design, when the base 1 falls relative to the valve body, the two clamping plates 403 and the two detectors 2 are all located inside and above the valve body. Subsequently, the cylinder 501 is started to drive the two clamping plates 403 to move away from each other and contact the inner wall of the valve body. Then the position of the detectors 2 is adjusted so that they contact the valve port.

[0060] Furthermore, the position of the detector 2 can be pre-adjusted so that the end of it that contacts the valve port coincides with the virtual circle corresponding to the outer surface of the clamp 403. At this time, when the clamp 403 moves to contact the inner wall of the valve body, the detector 2 can automatically fit and contact the valve port.

[0061] Correspondingly, such as Figure 9As shown, in this embodiment, the retainer 6 can be improved to a second telescopic rod 603 located between the two clamping plates 403. The second telescopic rod 603 is fixedly connected to the two clamping plates 403 respectively, thereby eliminating the need for the process of opening the annular groove 602. Furthermore, by ensuring the symmetrical distribution of the two clamping plates 403, the two slides 3 can also maintain a symmetrical distribution based on the base 1, which is beneficial to the smooth operation of the overall working process.

[0062] In use, the shaft 502, the lug-equipped circular plate 504, and the gear 404, among other structures, first drive the clamping plate 403 closer to the valve body so that their central axes coincide. Then, the detector 2 moves along the circumferential direction of the valve body to complete the detection. This part of the working process and effect is the same as in Example 1, and will not be repeated here. The difference is that when the cylinder 501 is started, the two clamping plates 403 can be driven away from each other until they abut against the inner wall of the valve body through the partition plate 503, the slider 506, the spiral groove 505, and the shaft 502. Then, the cylinder 501 continues to start, and through the partition plate 503, the slider 506, the spiral groove 505, and the gear ring 402, the clamping plate 403 and the detector 2 can move half a circle along the circumferential direction of the valve port. At this time, the two detectors 2 have completed a comprehensive and effective detection of the valve port.

[0063] Compared to Embodiment 1, by coordinating the clamping plate 403, the lug-shaped circular plate 504, the second telescopic rod 603, and the slide 3, the movement of the clamping plate 403 is adjusted so that the clamping plate 403 contacts the inner wall of the valve body. At this time, the movement of the clamping plate 403 along the valve body is no longer restricted by the shape of the valve body, which can further improve the overall adaptability and ensure the movement effect of the clamping plate 403 along the valve body, thereby ensuring the reliability of the subsequent test results.

[0064] Meanwhile, the position of the detector 2 relative to the clamp 403 can be pre-adjusted so that when the clamp 403 contacts the valve body, the detector 2 can simultaneously contact the valve port. Unlike the technical solution where the clamp 403 approaches the valve body from the outside, this solution does not require much manual intervention for the detector 2. After the clamp 403 contacts the surface of the valve body, there is no need to adjust the detector 2 to correspond with the valve port. Furthermore, moving it from the inside can also avoid contact interference between the detector 2 and the valve body. This can further simplify the testing process and effectively reduce the workload of the staff, while relatively improving the overall testing efficiency.

[0065] The overall structure remains largely unchanged. The technical solution formed by adjusting the position is more applicable to different existing valve bodies and is more convenient for testing. The contact method of the two clamps 403 being relatively far apart is suitable for testing small and medium-sized valve bodies. The clamps 403 can contact the inner wall of the valve body more quickly, thereby improving the speed of determining the valve body's central axis and further improving the overall testing efficiency.

[0066] Example 3:

[0067] Please see Figures 1 to 10 The present invention provides a method for predicting and detecting fluid impact wear in the flow channel of a hydraulic cylinder valve. The detection tooling used in this method is either one of the tools in Embodiment 1 or 2, and therefore also has the corresponding beneficial effects.

[0068] Specifically, first, the base 1 is placed on the valve body and the height adjustment mechanism is used to make the base 1 correspond to the valve body. Then, the control component 5 is activated to drive the positioning component 4 and the detector 2 to move horizontally until both positioning components 4 are in contact with the valve body, so that the positioning component 4 and the central axis of the valve body are aligned. Then, the detector 2 is adjusted to fit against the valve port. Next, the control component 5 is activated to drive the detector 2 to move along the circumferential direction of the valve port through the positioning component 4, thereby achieving comprehensive and effective detection of the valve port.

Claims

1. A fixture for predicting and detecting fluid impact wear in the flow channel of a hydraulic cylinder valve, comprising a base, a height adjustment mechanism for adjusting the height of the base, and two detectors, characterized in that, The base is provided with two symmetrically distributed slides. The slides are provided with positioning components corresponding to the valve body position and control components for driving the positioning components. Two detectors are respectively installed on the two positioning components. Activating the control components can drive the positioning components and detectors to move horizontally. When both positioning components are in contact with the valve body, the control components can drive the detectors to move along the circumferential direction of the valve port through the positioning components. The positioning assembly includes a support rod driven by a control assembly and a gear ring fixedly mounted on a base. A clamping plate corresponding to the position of the valve body is rotatably mounted at the end of the support rod, and a gear corresponding to the position of the gear ring is fixedly mounted on the outer surface of the support rod. The clamping plate is also provided with a retaining member, which allows the clamping plate to remain vertical when it moves along the axial direction of the support rod. The retaining member includes a first telescopic rod fixedly installed on the clamp plate and an annular groove formed on the inner wall of the base, with the end of the first telescopic rod slidably engaged in the annular groove; The control assembly includes a cylinder fixedly installed in the slide table and a shaft slidably installed in the slide table. The output shaft of the cylinder is fixedly installed with a partition that is movably fitted with the shaft. The partition is movably embedded with a slider that is slidably engaged with the outer surface of the shaft. The end of the shaft is fixedly installed with a round plate with ears that is fixedly connected to the support rod.

2. The hydraulic cylinder valve port flow channel fluid impact wear prediction and detection fixture according to claim 1, characterized in that, The outer surface of the shaft is provided with a spiral groove for the slider to slide and engage. The inside of the slide table is provided with a horizontal groove and two grooves for the lug plate to slide. The horizontal groove is located in the middle of the two grooves and is connected to both grooves. When the slider is located at the beginning and end of the spiral groove, the lug plate is horizontally aligned with the horizontal groove.

3. The hydraulic cylinder valve port flow channel fluid impact wear prediction and detection fixture according to claim 1, characterized in that, The bottom of the slide table has a cavity, inside which a slide rod and a top seat are slidably installed. A spring is fixedly installed between the slide rod and the top seat. The top of the slide rod extends out of the cavity and corresponds to the position of the lug plate. A step is provided on the side of the cavity near the base. The top seat is located in the step and its bottom abuts against the base. Both sides of the cavity are provided with bevels. A column head corresponding to the position of the bevel is rotatably installed on the surface of the slide rod.

4. The hydraulic cylinder valve port flow channel fluid impact wear prediction and detection fixture according to claim 3, characterized in that, The top of the slide rod is T-shaped, and an inclined spring is installed inside the cavity. The two ends of the inclined spring are fixedly connected to the top seat and the cavity, respectively. When the inclined spring is tilted to either side, the T-shaped top of the slide rod can abut against the side wall of the lug plate.

5. The hydraulic cylinder valve port flow channel fluid impact wear prediction and detection fixture according to claim 1, characterized in that, The gear is located outside the gear ring, and the lug plate is located inside a groove away from the base.

6. A method for predicting and detecting fluid impact wear in the flow channel of a hydraulic cylinder valve, comprising the tooling for predicting and detecting fluid impact wear in the flow channel of a hydraulic cylinder valve as described in any one of claims 1-5, characterized in that, The base is placed on the valve body and the height adjustment mechanism is used to make the base correspond to the valve body. Then, the control component is activated to drive the positioning component and the detector to move horizontally until both positioning components are in contact with the valve body. Next, the detector is adjusted to fit the valve port. Finally, the control component is activated to drive the detector to move along the circumferential direction of the valve port through the positioning component to complete the detection.

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