Test equipment and method of hydraulic control system for training simulator

Abstract

The invention relates to a test device and method of a hydraulic control system for a training simulator, in particular to the technical field of hydraulic control system part detection.The test device of the hydraulic control system for the training simulator comprises a test machine, a detection bin is arranged on the test machine, and a plug gauge test set and a multi-axis driver are arranged in the detection bin; the plug gauge testing group comprises a plug gauge seat, two sides of the plug gauge seat are respectively provided with a go gauge column and a no-go gauge column, and each of the go gauge column and the no-go gauge column is provided with at least three groups of rotary detection structures. Detection is carried out by directly stretching into and out of the internal threaded hole, the detection time is greatly shortened, meanwhile, point-surface contact between the probe rod and the large-diameter surface of the internal thread is adopted, the contact area between a detection part and the internal threaded hole during detection can be reduced, heat exchange between the hydraulic connecting pipe and a plug gauge test set is greatly reduced, and the detection efficiency is improved. And the problem of relatively large detection error caused by the influence of low temperature during the detection of the plug gauge test group is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of hydraulic control system parts detection, and in particular relates to a testing device and method for a hydraulic control system for a training simulator. Background Art

[0002] A training simulator is a device used to simulate specific motion processes. To ensure high loads and high transmission power during simulated motion, the simulator utilizes a hydraulic control system. Hydraulic connectors are essential components of hydraulic control systems. They connect to the hydraulic oil lines, transmit the hydraulic oil, and must withstand the pressure of the hydraulic oil. Every hydraulic oil line connector is tested before shipment to ensure it meets operational requirements and prevent accidents.

[0003] Hydraulic oil pipe connectors are generally made of metal, and to increase strength, the wall of the hydraulic oil pipe connector is also relatively thick. In hydraulic control systems used under extreme conditions, such as low-temperature environments, the hydraulic connecting pipe will also be affected by the low temperature, causing the inner diameter of the hydraulic connecting pipe to increase. For hydraulic connecting pipes with internal threads, the larger diameter of the internal threads will increase, causing a gap between the larger diameter surface of the internal threads of the hydraulic connecting pipe and the external thread surface of the hydraulic oil pipe. This will lead to a poor seal at the connection between the hydraulic connecting pipe and the hydraulic oil pipe, reducing the pressure output threshold during hydraulic system operation, and affecting the normal operation of the equipment.

[0004] By testing in simulated low-temperature environments, we can understand the expansion of hydraulic connectors at operating temperatures and determine the extremes of their performance in low-temperature environments. By testing the performance of hydraulic connectors under these extremes, we can identify their limitations and weaknesses and provide opportunities for improvement. These test results can provide feedback and guidance to product design and manufacturing teams to improve product performance, reliability, and safety, ensuring that the internal threads of the hydraulic connectors maintain their normal inner diameter dimensions even in low-temperature conditions.

[0005] Currently, thread plug gauges are commonly used to measure the quality of threaded holes. When measuring internal threads, if the go gauge on the "over-end" of the thread screws in properly, while the no-go gauge on the "stop-end" does not screw in, it means that the processed thread meets the requirements; otherwise, it fails. However, during testing, because the external threads on the plug gauge are in direct contact with the internal threads, and the plug gauge takes a long time to screw into the internal threaded hole of the hydraulic connecting pipe, the external threads on the plug gauge will exchange heat with the internal threads of the hydraulic connecting pipe, which in turn causes the external threads on the plug gauge to cool down and shrink, resulting in a smaller minor diameter. Therefore, in low-temperature environments, the test results obtained are quite inaccurate, and it is easy to mistakenly judge hydraulic connecting pipes that do not meet dimensional requirements as qualified products. Summary of the Invention

[0006] The present invention provides a test device and method for a hydraulic control system for a training simulator, and aims to solve the technical problem that during low-temperature testing of the internal threaded hole of the existing hydraulic connecting pipe, the detection component is easily affected by the low-temperature state, thereby affecting the detection accuracy.

[0007] In order to solve the above technical problems, the present invention provides a test equipment for a hydraulic control system for a training simulator, including a test machine, a detection chamber is provided on the test machine, a cooler and a fixed seat are provided on the test machine, the fixed seat is used to fix the hydraulic connecting pipe, and a plug gauge test group and a multi-axis driver are provided inside the detection chamber; the plug gauge test group includes a plug gauge seat, the plug gauge seat is installed on the output end of the multi-axis driver, and a go gauge column and a stop gauge column are respectively installed on both sides of the plug gauge seat, and at least three groups of rotary detection structures are provided on the go gauge column and the stop gauge column. The structure is simple, and a rotary mounting groove corresponding to the rotary detection structure is provided on the circumferential side walls of the through gauge column and the stop gauge column; the rotary detection structure includes a plurality of probe rods, and the plurality of probe rods move along a rotary trajectory in the rotary mounting groove, and the rotary trajectory includes a straight area, and the probe rods enter and move out of the straight area along a circular arc trajectory; when the probe rods are located in the straight area, the distance L from the detection end of the probe rod to the axis of the plug gauge seat is the standard radius size of the plug gauge test group for detection, and the standard radius size corresponding to the probe rod on the stop gauge column is larger than the standard radius size corresponding to the probe rod on the through gauge column.

[0008] In a preferred embodiment, the rotary detection structure is a rotary probe rod group, which includes a rotary wheel, which is rotatably installed in a rotary mounting groove, and the rotary trajectory is formed by the rotation of the rotary wheel. Multiple probe rods are fixedly installed on the circumferential surface of the rotary wheel in a circular array, and the rotary wheel is arranged along the radial plane of the plug gauge seat. The probe rods are distributed along the radial direction of the rotary wheel, and the flat area is the area on the rotary wheel rotation trajectory where the probe rod is close to the large diameter surface of the internal thread and is perpendicular to the axis of the plug gauge seat.

[0009] In a preferred embodiment, the rotary detection structure is a crawler-type probe rod group, which includes a rotary support block, which is fixedly installed in a rotary mounting groove, and the rotary track is the outer track of the rotary support block. Multiple probe rods are connected in pairs to form a crawler structure arranged around the outside of the rotary support block. Multiple probe rods rotate along the outer track of the rotary support block, and adjacent probe rods are connected by a flexible connecting belt. The contact end of the probe rod and the rotary support block is fixedly connected to a planar support block, and the planar support block slides with the surface of the rotary support block.

[0010] In a preferred embodiment, both ends of the swivel support block are arc-shaped, and a planar support plate is provided on the side of the swivel support block away from the axis of the plug gauge seat. The surface of the planar support plate is arranged parallel to the axis of the plug gauge seat, and the surface of the planar support plate is a flat area. When the bottom wall of the planar support block slides against the surface of the planar support plate, the probe rod is perpendicular to the axis of the plug gauge seat, and the length of the planar support plate is greater than the distance between two adjacent planar support blocks.

[0011] In a preferred embodiment, a gas delivery channel and a gas output channel are provided in the plug gauge seat and the stop gauge column. The gas delivery channel is connected to the side of the rotary mounting groove close to the plug gauge seat, and the gas output channel is connected to the side of the rotary mounting groove close to the axis of the plug gauge seat. The gas delivery channel is connected to the gas supply source through a connecting pipe, and the gas supply source delivers gas at room temperature to the gas delivery channel. The gas output channel is connected to the exhaust source through a connecting pipe, and the exhaust speed of the exhaust source is the same as the supply speed of the gas source. Brush groups are installed in the areas corresponding to the rotary support blocks at both ends of the rotary mounting groove.

[0012] In a preferred embodiment, the multi-axis drive includes an X-axis drive, a Z-axis drive, a Y-axis drive and a mounting base. The X-axis drive is fixedly installed on the inner wall of the detection chamber, the Z-axis drive is installed on the movable end of the X-axis drive, the Y-axis drive is installed on the movable end of the Z-axis drive, and the mounting base is installed on the movable end of the Y-axis drive. The X-axis drive is used to drive the Z-axis drive to move along the X-axis direction, the Z-axis drive is used to drive the Y-axis drive to move along the Z-axis, and the Y-axis drive is used to drive the mounting base to move along the Y-axis direction. The mounting base is rotatably installed at the bottom of the mounting base, and the plug gauge seat is controlled by a servo motor installed on the mounting base to rotate forward and reverse.

[0013] In a preferred embodiment, a rotating driving wheel is also provided in the inspection chamber, a feed drive is installed on the testing machine, a wheel frame is fixedly installed on the movable end of the feed drive, the rotating driving wheel is rotatably installed at the bottom of the wheel frame, and the rotating driving wheel is controlled by a servo motor on the wheel frame. The fixed seat includes a base, the base is fixedly installed on the conveying chain, a clamping seat is rotatably installed on the base, the hydraulic connecting pipe is clamped in the clamping seat, the rotating driving wheel is a gear structure, and a driven gear is provided at the bottom of the clamping seat.

[0014] In a preferred embodiment, both the go gauge post and the stop gauge post are slidably mounted in the plug gauge seat, and pressure sensors are provided between the go gauge post and the plug gauge seat and between the stop gauge post and the plug gauge seat.

[0015] In a preferred embodiment, a plurality of positioning rods are provided on the plug gauge seat, the positioning rods are provided corresponding to the outer wall of the pipe mouth of the hydraulic connecting pipe, and the positioning rods pass through the plug gauge seat and slide with the plug gauge seat. A protrusion is fixedly connected to the middle part of the positioning rod, and elastic parts are provided between both sides of the protrusion and the plug gauge seat.

[0016] A method for testing a hydraulic control system for a training simulator comprises the following steps:

[0017] Step 1: transport the fixing seat and the hydraulic connecting pipe on the fixing seat to a cooler to cool the hydraulic connecting pipe to reduce the temperature of the hydraulic connecting pipe to the low temperature state required by the simulation limit;

[0018] Step 2: The cooled hydraulic connecting pipe is transported to the inspection chamber through the fixed seat, and the multi-axis driver controls the gauge pin to feed into the internal thread hole. The large diameter surface of the internal thread is inspected using the probe rod. If the gauge pin enters the internal thread hole smoothly and completely, the next step is carried out. If not, the hydraulic connecting pipe is judged to be unqualified.

[0019] Step 3: Control the stop gauge pin to enter the internal threaded hole again through the multi-axis driver. If the stop gauge pin cannot completely enter the internal threaded hole, the hydraulic connecting pipe is judged to be qualified. If the stop gauge pin smoothly and completely enters the internal threaded hole, the hydraulic connecting pipe is judged to be unqualified.

[0020] Step 4: Output the hydraulic connecting pipe from the inspection chamber through the fixing seat and classify qualified and unqualified products.

[0021] Beneficial effects: The present invention adopts the method of directly extending into and out of the internal threaded hole for detection, which greatly shortens the detection time. At the same time, the point-to-surface contact between the probe rod and the large diameter surface of the internal thread can reduce the contact area between the detection component and the internal threaded hole during detection, and the probe rod does not need to be in contact with the large diameter surface of the internal thread for a long time, thereby greatly reducing the heat exchange between the hydraulic connecting pipe and the plug gauge test group, avoiding the problem of large detection errors caused by the low temperature of the hydraulic connecting pipe during the detection of the plug gauge test group, and greatly improving the detection accuracy of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 Schematic diagram of the internal structure of the detection chamber of the present invention.

[0024] Figure 3 This is a state diagram of the rotary probe assembly of the present invention when testing a product.

[0025] Figure 4 This is an axial view of the go gauge of the rotary probe rod assembly used in the present invention in the internal threaded hole.

[0026] Figure 5 This is a state diagram of the rotary probe rod assembly of the present invention detecting the major diameter of the internal thread.

[0027] Figure 6This is a diagram showing the obstructed state of the probe rod of the present invention when detecting the major diameter of a relatively small internal thread.

[0028] Figure 7 This is a state diagram of the crawler-type probe assembly of the present invention when testing a product.

[0029] Figure 8 This is an axial view of the go gauge of the crawler-type probe rod assembly used in the present invention in the internal threaded hole.

[0030] Figure 9 This is a state diagram of the crawler-type probe assembly of the present invention detecting the major diameter of the internal thread.

[0031] Figure 10 This is a structural diagram of the crawler-type assembly formed by the probe rod of the present invention.

[0032] Figure 11 This is a state diagram of the present invention driving the clamp to rotate to adjust the direction of the hydraulic connecting pipe.

[0033] Figure 12 This is a diagram showing the installation status of the pressure sensor of the present invention.

[0034] Figure 13 Schematic diagram of the installation of the positioning rod of the present invention.

[0035] Figure 14 This is a schematic diagram of the overall structure of the hydraulic connecting pipe tested in the present invention.

[0036] Figure 15 Flow chart of the testing method of the present invention.

[0037] The accompanying drawings are marked as follows: 1. testing machine; 11. detection chamber; 12. cooler; 13. conveyor chain; 2. plug gauge test group; 21. plug gauge seat; 22. go gauge column; 23. stop gauge column; 24. positioning rod; 241. bump; 25. rotary mounting groove; 26. gas delivery channel; 27. gas output channel; 3. fixing seat; 31. base; 32. clamping seat; 4. multi-axis drive; 41. X-axis drive; 42. Z-axis drive; 43. Y-axis drive; 44. mounting seat; 5. rotary detection structure; 51. probe rod; 511. plane support block; 512. slider; 52. rotating wheel; 53. rotary support block; 54. flexible connecting belt; 55. plane support plate; 56. brush group; 57. roller; 6. rotating drive wheel; 61. feed drive; 62. wheel frame; 7. pressure sensor;

[0038] a. Hydraulic connecting pipe; a1. Internal threaded hole; a2. Threaded large diameter surface. DETAILED DESCRIPTION

[0039] In order to make the purpose, content and advantages of the present invention more clear, the specific embodiments of the present invention are further described in detail below.

[0040] The present invention provides a test device for a hydraulic control system for a training simulator, comprising a test machine 1, a test chamber 11, a cooler 12, and a fixing seat 3. The fixing seat 3 is used to fix a hydraulic connecting pipe a. The fixing seat 3 moves on the test machine 1 in a direction from the cooler 12 to the test chamber 11. After the hydraulic connecting pipe a is cooled by the cooler 12 to a low temperature required for simulation, it enters the test chamber 11 and waits for testing. The test chamber 11 is provided with a plug gauge test group 2 and a multi-axis drive 4.

[0041] The plug gauge test group 2 includes a plug gauge seat 21, which is installed on the output end of the multi-axis driver 4. A through gauge column 22 and a stop gauge column 23 are installed on both sides of the plug gauge seat 21. The plug gauge seat 21, the through gauge column 22 and the stop gauge column 23 are coaxially arranged. At least three groups of rotary detection structures 5 are provided on the through gauge column 22 and the stop gauge column 23. Rotary mounting grooves 25 corresponding to the rotary detection structures 5 are provided on the circumferential side walls of the through gauge column 22 and the stop gauge column 23. Each group of rotary detection structures 5 is respectively installed in the corresponding rotary mounting grooves 25. The rotary detection structure 5 includes a plurality of probe rods 51, and the plurality of probe rods 51 are arranged on the rotary mounting grooves 25. The groove 25 is distributed in a rotation trajectory and moves along the rotation trajectory. The above-mentioned rotation trajectory includes a straight area. When the probe rod 51 moves to the straight area position, the probe rod 51 is perpendicular to the axis of the plug gauge seat 21, and the detection end of the probe rod 51 corresponds to the large diameter surface a2 of the internal thread of the hydraulic connecting pipe a; the probe rod 51 enters and moves out of the above-mentioned straight area along a circular arc trajectory. When the probe rod 51 is located in the straight area, the distance L from the detection end of the probe rod 51 to the axis of the plug gauge seat 21 is the standard radius size used for detection by the plug gauge test group 2, and the standard radius size corresponding to the probe rod 51 on the stop gauge column 23 is larger than the standard radius size corresponding to the probe rod 51 on the through gauge column 22.

[0042] During inspection, the go gauge column 22 and the stop gauge column 23 move successively along the axis of the internal threaded hole a1 of the hydraulic connecting pipe a toward the inside of the internal threaded hole a1; when the straight area reaches the position of the corresponding internal threaded large diameter surface a2, the corresponding probe rod 51 moves to the straight area and is in a vertical state, and its detection end contacts the internal threaded large diameter surface a2 for inspection. When the straight area leaves the corresponding internal threaded large diameter surface a2, the corresponding probe rod 51 leaves the straight area along an arc trajectory. According to the above cycle, in the process of the forward movement of the go gauge column 22 or the stop gauge column 23, each probe rod 51 moves successively to the straight area and is in a vertical state and performs contact inspection on the corresponding internal threaded large diameter surface a2, and after contact, the probe rod 51 leaves the internal threaded large diameter surface a2 along an arc trajectory.

[0043] In the above embodiment, when the go gauge column 22 or the stop gauge column 23 enters the internal threaded hole a1, if the distance between the internal threaded large diameter surface a2 and the axis of the plug gauge seat 21 is greater than or equal to the standard radius size of the detection end of the probe rod 51 located in the straight area, you can refer to the appendix of the manual for more information. Figure 5 , the probe rod 51 can smoothly reach the straight area and be in a vertical state, and continue to rotate backward to leave the internal thread large diameter surface a2, and the entry of the go gauge column 22 or the stop gauge column 23 will not be blocked. If the distance between the internal thread large diameter surface a2 and the axis of the plug gauge seat 21 is smaller than the standard radius size of the detection end of the probe rod 51 located in the straight area, you can refer to the appendix of the instruction manual for more information. Figure 6 , it is difficult for the probe rod 51 to smoothly reach the straight area and be in a vertical state, and it is also impossible to rotate backward to leave the internal thread large diameter surface a2, and the go gauge column 22 or the stop gauge column 23 will be hindered.

[0044] Based on the inspection standards, if the hydraulic connecting pipe a is qualified, the size of the internal thread large diameter surface a2 from the axis of the plug gauge seat 21 is greater than or equal to the standard radius size of the inspection end of the probe rod 51 located in the straight area on the through gauge column 22, and is smaller than the standard radius size of the inspection end of the probe rod 51 located in the straight area on the stop gauge column 23. Then the through gauge column 22 can smoothly enter the internal threaded hole a1 without hindrance. At the same time, the stop gauge column 23 is hindered and cannot enter the internal threaded hole a1. Therefore, in addition to the above situation, the hydraulic connecting pipe a is judged to be qualified. If other situations are detected, it is judged that the hydraulic connecting pipe a cannot meet the use requirements under extreme low temperature conditions, and therefore the hydraulic connecting pipe a is judged to be unqualified.

[0045] It should be noted that since the component that actually contacts the hydraulic connecting pipe a is the probe rod 51, the probe rod 51 in this embodiment is made of metal materials with a low thermal expansion coefficient such as nickel-based alloy and zirconium metal (correspondingly, the shrinkage deformation caused by cooling is also smaller than other metals), which can further avoid the impact of low temperature on the probe rod 51.

[0046] Further, refer to the instructions attached Figure 3 、 Figure 4 and Figure 5The rotating trajectory is formed by the rotation of the rotating wheel 52. Specifically, the rotating wheel 52 is rotatably installed in the rotating mounting groove 25, and multiple probe rods 51 are fixedly installed on the circumferential surface of the rotating wheel 52 in a circular array. The rotating wheel 52 is arranged along the radial plane of the plug gauge seat 21, and the probe rods 51 are distributed along the radial direction of the rotating wheel 52, thereby forming a rotating wheel type probe rod group. The straight area is the area where the probe rod 51 is close to the large diameter surface a2 of the internal thread and is perpendicular to the axis of the plug gauge seat 21 on the rotating trajectory of the rotating wheel 52. The entire rotation of the probe rod 51 is supported by the rotating wheel 52. When the through gauge column 22 or the stop gauge column 23 enters the internal threaded hole a1, it rotates continuously. The thread of the probe rod 51 and the internal threaded hole a1 are synchronously driven in a manner similar to gear meshing. The wheel 52 rotates (specifically, when the probe rod 51 moves along the arc trajectory, it will enter the area of the thread flanks on both sides of the position of the internal thread major diameter surface a2 along the arc and contact one of the thread flanks, and then the probe rod 51 is obstructed by the thread flanks. In the process of the forward movement of the through gauge column 22 or the stop gauge column 23, the probe rod 51 is deflected and drives the rotating wheel 52 to rotate), so that each probe rod 51 gradually becomes vertical in the corresponding straight area and contacts the internal thread major diameter surface a2 for detection. If the forward movement is not obstructed, the probe rod 51 will continue to rotate backward after reaching the straight area and leave the internal thread major diameter surface a2. Therefore, the actual detection time of each probe rod 51 and the corresponding internal thread major diameter surface a2 is very short.

[0047] Compared with the method in the prior art in which the thread plug gauge spirally enters the threaded hole and detects, this embodiment uses a method of directly extending into and out of the internal threaded hole a1 for detection, which greatly shortens the detection time. At the same time, compared with the surface-to-surface contact of threads during detection by the thread plug gauge in the prior art, this embodiment uses point-to-surface contact between the probe rod 51 and the internal threaded large diameter surface a2, which can reduce the contact area between the detection component and the internal threaded hole a1 during detection, and the probe rod 51 does not need to be in contact with the internal threaded large diameter surface a2 for a long time, thereby greatly reducing the heat exchange between the hydraulic connecting pipe a and the plug gauge test group 2, avoiding the problem of large detection errors caused by the low temperature of the hydraulic connecting pipe a during detection of the plug gauge test group 2, and greatly improving the detection accuracy of the equipment.

[0048] Furthermore, the testing machine 1 is provided with a conveyor chain 13, the fixed seat 3 is installed on the conveyor chain 13 and follows the conveyor chain 13 for circulation. The cooler 12 is a nitrogen refrigeration device. The cooler 12 is provided with a nitrogen delivery pipe for delivering nitrogen to the hydraulic connecting pipe a. The hydraulic connecting pipe a is quickly cooled by delivering nitrogen. The cooler 12 is also provided with a temperature detection unit, which is used to detect the actual temperature of the hydraulic connecting pipe a. When the actual temperature of the hydraulic connecting pipe a reaches the simulated limit temperature required for the detection, the hydraulic connecting pipe a is stopped from being cooled.

[0049] It should be noted that nitrogen freezing is only one of the cooling solutions used in this example. In actual use, other cooling solutions can be used to cool the hydraulic connecting pipe a as needed.

[0050] Refer to the instruction manual Figure 2 The multi-axis driver 4 includes an X-axis driver 41, a Z-axis driver 42, a Y-axis driver 43 and a mounting base 44. The X-axis driver 41 is fixedly installed on the inner wall of the detection chamber 11, the Z-axis driver 42 is installed on the movable end of the X-axis driver 41, the Y-axis driver 43 is installed on the movable end of the Z-axis driver 42, and the mounting base 44 is installed on the movable end of the Y-axis driver 43. The X-axis driver 41 is used to drive the Z-axis driver 42 to move along the X-axis direction, the Z-axis driver 42 is used to drive the Y-axis driver 43 to move along the Z-axis, and the Y-axis driver 43 is used to drive the mounting base 44 to move along the Y-axis direction. The mounting base 44 is rotatably installed at the bottom of the mounting base 44, and the plug gauge seat 21 is controlled to rotate forward and reverse by a servo motor installed on the mounting base 44.

[0051] It should be noted that the X-axis driver 41, the Z-axis driver 42 and the Y-axis driver 43 can all adopt motor screw slider assemblies, or other linear drive structures such as cylinders, so as to realize three-axis drive of the mounting seat 44, so that the plug gauge test group 2 can accurately reach the inspection station and perform feed inspection, and by controlling the rotation of the plug gauge seat 21 through the servo motor, the position of the through gauge column 22 and the stop gauge column 23 can be changed for sequential inspection.

[0052] In the above embodiment, the rotation of the rotating wheel 52 is used to support the probe rod 51, but due to the limitation of the circumferential shape, there is only one probe rod 51 in each group of rotary detection structures 5 that can be located in the straight area, and it is impossible to ensure that the probe rods 51 in all the rotary detection structures 5 can be in the straight area at the same time. That is to say, there will always be one or more positions of the probe rod 51 that are not in the straight area, and a support missing point is formed in this position. At this time, if the positioning of the through gauge column 22 or the stop gauge column 23 is inaccurate, the probe rod 51 and the internal thread large diameter surface a2 in the opposite direction of the support missing point will be squeezed, and the stop gauge column 23 will be slightly deformed as a whole in the direction of the support missing point, causing the state of being unable to enter the internal threaded hole a1 to become accessible, resulting in a misjudgment. Therefore, this embodiment also provides a way of providing a probe rod 51 to ensure that each group of rotary detection structures 5 has at least two probe rods 51 in the straight area at all times. Specifically, as shown in the attached manual Figure 7 、 Figure 8 、 Figure 9 and Figure 10As shown, the rotation trajectory is the outer contour trajectory of the rotation support block 53, and the rotation support block 53 is fixedly installed in the rotation installation groove 25. A plurality of probe rods 51 are connected in pairs to form a crawler structure arranged around the outside of the rotation support block 53. The plurality of probe rods 51 rotate along the outer contour trajectory of the rotation support block 53 to form a crawler probe rod group, and the adjacent two probe rods 51 are connected by a flexible connecting belt 54. The flexible connecting belt 54 can be a belt structure woven with nylon rope or other flexible connection structures. The contact end of the probe rod 51 and the rotation support block 53 is fixedly connected with a planar support block 511. The planar support block 511 slides in cooperation with the surface of the rotary support block 53. A planar support plate 55 is provided on the side of the rotary support block 53 away from the axis of the plug gauge seat 21. The surface of the planar support plate 55 is arranged parallel to the axis of the plug gauge seat 21. The surface of the planar support plate 55 is a flat area. When the bottom wall of the planar support block 511 slides against the surface of the planar support plate 55, the probe rod 51 is perpendicular to the axis of the plug gauge seat 21. The length of the planar support plate 55 is greater than the distance between the two adjacent planar support blocks 511. Therefore, it can be ensured that at least two probe rods 51 can exist at the same time on the flat area formed by the planar support plate 55.

[0053] It should be noted that both ends of the slewing support block 53 are circular arc trajectories, which are similar to the rotation of the rotating wheel 52. When the through gauge column 22 or the stop gauge column 23 enters the internal threaded hole a1, the probe rod 51 is in an inclined state when it moves toward the flat support plate 55 along the circular arc trajectory in front of the slewing support block 53, and then it will enter the area of the thread tooth surfaces on both sides of the position of the internal thread large diameter surface a2 along the arc line and contact one of the thread tooth surfaces. Then the probe rod 51 is hindered by the thread tooth surface. In the process of the through gauge column 22 or the stop gauge column 23 moving forward, the probe rod 51 is deflected, thereby driving all the probe rods 51 to produce a slewing motion. When the probe rod 51 reaches the surface of the flat support plate 55, it is in a stable vertical state and is aligned with the flat support plate 55. The internal thread major diameter surface a2 is subjected to contact detection, and as the go gauge column 22 or the no-go gauge column 23 continues to advance, the probe rod 51 already on the plane support plate 55 is temporarily blocked by the thread tooth surface and stays in the internal thread major diameter surface a2. Therefore, the plane support block 511 at the bottom of the probe rod 51 and the plane support plate 55 produce stable relative sliding, and can maintain a stable detection state. When the plane support block 511 moves to the rear arc trajectory, it tilts again and can leave the internal thread major diameter surface a2. Similarly, when the size of the internal thread major diameter surface a2 from the axis of the plug gauge seat 21 is smaller than the standard radius size of the detection end of the probe rod 51 located on the plane support plate 55, the advancement of the go gauge column 22 or the no-go gauge column 23 will be hindered.

[0054] In the above embodiment, whether a rotary probe rod group or a crawler probe rod group is used, the spacing of the probe rods 51 is set according to the thread pitch of the internal threaded hole a1 to be detected, ensuring that each probe rod 51 can enter the corresponding thread when moving forward.

[0055] Furthermore, in order to improve the stability of the movement of the probe rod 51, sliders 512 can be set on both sides of the planar support block 511, and sliding grooves corresponding to the sliders 512 can be set in the slewing mounting groove 25 to guide the planar support block 511. In order to reduce unnecessary friction, a roller structure (similar to a track wheel) can be set on the slewing support block 53 to guide the crawler structure formed by the probe rod 51 and the flexible connecting belt 54 to reduce the friction range. In addition to the area of the planar support plate 55, the surface of the slewing support block 53 can also be embedded with an installation roller 57 to make the roller 57 contact with the planar support block 511, thereby reducing the overall running resistance of the crawler assembly formed by the probe rod 51.

[0056] In order to reduce the influence of the low temperature environment in the hydraulic connecting pipe a on the rotary detection structure 5, this embodiment also provides the following technical solutions. Specifically, a gas delivery channel 26 and a gas output channel 27 are provided in the plug gauge seat 21 and the stop gauge column 23. The gas delivery channel 26 is connected to the side of the rotary mounting groove 25 close to the plug gauge seat 21, and the gas output channel 27 is connected to the side of the rotary mounting groove 25 close to the axis of the plug gauge seat 21. The gas delivery channel 26 is connected to the gas supply source through a connecting pipe. The gas supply source is an air supply pump, which delivers gas at room temperature to the gas delivery channel 26. The gas output channel 27 is connected to the external environment of the detection chamber 11 through a connecting pipe, so that a normal temperature airflow can be formed in the rotary mounting groove 25 to perform heat exchange on the probe rod 51, reduce the influence of the low temperature environment of the hydraulic connecting pipe a on the probe rod 51, and enable the probe rod 51 to maintain normal temperature to the greatest extent for detecting the large diameter surface a2 of the internal thread.

[0057] In the above embodiment, in order to reduce the impact of the leakage of normal temperature airflow on the hydraulic connecting pipe a, the gas output channel 27 is connected to the air extraction source through a connecting pipe. The air extraction source is an air pump. The air extraction speed of the air extraction source is the same as the air supply speed of the air supply source. Therefore, the leakage of gas can be reduced. At the same time, the areas of the rotary support blocks 53 at both ends of the rotary mounting groove 25 are installed with brush groups 56. The brush groups 56 are densely arranged bristles, so as to avoid the exchange of air inside and outside the rotary mounting groove 25 to the greatest extent without affecting the entry and exit of the probe rod 51, thereby further reducing the impact of heat exchange.

[0058] Refer to the instruction manual Figure 14The present embodiment detects a three-way pipe structure, wherein the hydraulic connecting pipe a has at least two internal threaded holes a1 in different directions. Therefore, during the detection, in order to improve the detection efficiency, the angle of the hydraulic connecting pipe a needs to be adjusted. For details, refer to the attached manual. Figure 2 and Figure 11 A rotating driving wheel 6 is also provided in the detection chamber 11, and a feed driver 61 is installed on the testing machine 1. The feed driver 61 is a linear drive component such as a linear motor or a cylinder. A wheel frame 62 is fixedly installed on the movable end of the feed driver 61. The rotating driving wheel 6 is rotatably installed at the bottom of the wheel frame 62, and the rotating driving wheel 6 is controlled by the servo motor on the wheel frame 62. The fixed seat 3 includes a base 31, which is fixedly installed on the conveying chain 13. A clamping seat 32 is rotatably installed on the base 31, and a hydraulic connecting pipe a is clamped in the clamping seat 32. The rotating driving wheel 6 is a gear structure, and a driven gear is provided at the bottom of the clamping seat 32.

[0059] It should be noted that when the fixed seat 3 carries the hydraulic connecting pipe a into the inspection chamber 11, the feed driver 61 drives the rotating driving wheel 6 to approach the fixed seat 3, and makes the rotating driving wheel 6 engage with the driven gear on the clamping seat 32. The servo motor controls the driving clamping seat 32 to rotate and adjust its posture. After inspecting the first internal threaded hole a1, the hydraulic connecting pipe a is controlled to rotate so that the other internal threaded holes a1 face the plug gauge test group 2, so as to perform rapid inspection.

[0060] Furthermore, in order to ensure that the device can promptly determine that the forward movement of the go gauge post 22 or the stop gauge post 23 is blocked and promptly stop feeding, the present embodiment provides the following technical solution: Specifically, the go gauge post 22 and the stop gauge post 23 are both slidably mounted in the plug gauge seat 21, and pressure sensors 7 are provided between the go gauge post 22 and the plug gauge seat 21, and between the stop gauge post 23 and the plug gauge seat 21. The pressure sensors 7 are selected in type and signal according to actual detection needs. When the forward movement of the go gauge post 22 or the stop gauge post 23 is blocked during detection, the pressure sensor 7 can detect the pressure, thereby promptly determining the blocked state of the go gauge post 22 or the stop gauge post 23.

[0061] In the above embodiment, in order to improve the coaxial accuracy between the plug gauge test group 2 and the hydraulic connecting pipe a during detection, a plurality of positioning rods 24 are provided on the plug gauge seat 21. The positioning rods 24 are arranged corresponding to the outer wall of the pipe mouth of the hydraulic connecting pipe a, and the positioning rods 24 pass through the plug gauge seat 21 and slide with the plug gauge seat 21. A protrusion 241 is fixedly connected to the middle part of the positioning rod 24, and elastic parts are provided between the two sides of the protrusion 241 and the plug gauge seat 21. When the plug gauge test group 2 approaches the hydraulic connecting pipe a, the positioning rod 24 first contacts the outer wall of the pipe mouth of the hydraulic connecting pipe a for positioning. As the plug gauge seat 21 continues to feed, the spring on the protrusion 241 is compressed, and the positioning rod 24 moves relative to the plug gauge seat 21, which will not affect the feeding of the plug gauge seat 21, thereby further improving the accuracy of equipment detection.

[0062] Refer to the instruction manual Figure 15 A method for testing a hydraulic control system for a training simulator comprises the following steps:

[0063] Step 1: transport the fixing seat 3 and the hydraulic connecting pipe a on the fixing seat 3 to the cooler 12 to cool the hydraulic connecting pipe a, so that the temperature of the hydraulic connecting pipe a is reduced to the low temperature state required by the simulation limit;

[0064] Step 2: The cooled hydraulic connecting pipe a is transported to the inspection chamber 11 through the fixing seat 3. The multi-axis driver 4 controls the gauge pin 22 to feed into the internal threaded hole a1. The probe 51 is used to inspect the internal threaded large diameter surface a2. If the gauge pin 22 smoothly and completely enters the internal threaded hole a1, the next step is carried out. If not, the hydraulic connecting pipe a is judged to be unqualified.

[0065] Step 3: Control the stop gauge pin 23 to enter the internal threaded hole a1 again through the multi-axis driver 4. If the stop gauge pin 23 cannot completely enter the internal threaded hole a1, the hydraulic connecting pipe a is determined to be qualified. If the stop gauge pin 23 successfully and completely enters the internal threaded hole a1, the hydraulic connecting pipe a is determined to be unqualified.

[0066] Step 4: The hydraulic connecting pipe a is output from the inspection chamber 11 through the fixing seat 3, and qualified and unqualified products are classified.

[0067] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A test device for a hydraulic control system for a training simulator, characterized by: The invention comprises a testing machine (1), wherein the testing machine (1) is provided with a testing chamber (11), the testing machine (1) is provided with a cooler (12) and a fixing seat (3), the fixing seat (3) is used to fix a hydraulic connecting pipe (a), and a plug gauge test group (2) and a multi-axis driver (4) are provided inside the testing chamber (11); The plug gauge test group (2) comprises a plug gauge seat (21), the plug gauge seat (21) being mounted on the output end of the multi-axis driver (4), a through gauge column (22) and a stop gauge column (23) being mounted on both sides of the plug gauge seat (21), at least three groups of rotary detection structures (5) being arranged on each of the through gauge column (22) and the stop gauge column (23), and rotary mounting grooves (25) corresponding to the rotary detection structures (5) being arranged on the circumferential side walls of each of the through gauge column (22) and the stop gauge column (23); The rotary detection structure (5) includes a plurality of probe rods (51), the plurality of probe rods (51) move along a rotary track in the rotary mounting groove (25), the rotary track including a straight area, and the probe rods (51) enter and move out of the straight area along an arc track; when the probe rods (51) are located in the straight area, the distance L from the detection end of the probe rod (51) to the axis of the plug gauge seat (21) is the standard radius size used for detection by the plug gauge test group (2), and the standard radius size corresponding to the probe rod (51) on the stop gauge column (23) is greater than the standard radius size corresponding to the probe rod (51) on the through gauge column (22).

2. The test equipment for a hydraulic control system for a training simulator according to claim 1, characterized in that: The rotary detection structure (5) is a rotary probe rod group, which includes a rotary wheel (52), the rotary wheel (52) is rotatably mounted in a rotary mounting groove (25), the rotary trajectory is formed by the rotation of the rotary wheel (52), a plurality of probe rods (51) are fixedly mounted on the circumferential surface of the rotary wheel (52) in a circumferential array, the rotary wheel (52) is arranged along the radial plane of the plug gauge seat (21), the probe rods (51) are distributed along the radial direction of the rotary wheel (52), and the straight area is the area on the rotary trajectory of the rotary wheel (52) where the probe rod (51) is close to the large diameter surface of the internal thread (a2) and is perpendicular to the axis of the plug gauge seat (21).

3. The test equipment for a hydraulic control system for a training simulator according to claim 1, characterized in that: The rotary detection structure (5) is a crawler-type probe rod group, which includes a rotary support block (53), the rotary support block (53) is fixedly installed in the rotary installation groove (25), the rotary track is the outer track of the rotary support block (53), and a plurality of probe rods (51) are connected in pairs to form a crawler-type structure arranged around the outside of the rotary support block (53). The plurality of probe rods (51) rotate along the outer track of the rotary support block (53), and adjacent two probe rods (51) are connected by a flexible connecting belt (54). The contact end of the probe rod (51) and the rotary support block (53) is fixedly connected with a plane support block (511), and the plane support block (511) is in sliding cooperation with the surface of the rotary support block (53).

4. The test equipment for a hydraulic control system for a training simulator according to claim 3, characterized in that: Both ends of the swivel support block (53) are arc-shaped. A plane support plate (55) is provided on the side of the swivel support block (53) away from the axis of the plug gauge seat (21). The surface of the plane support plate (55) is arranged parallel to the axis of the plug gauge seat (21). The surface of the plane support plate (55) is a flat area. When the bottom wall of the plane support block (511) slides against the surface of the plane support plate (55), the probe rod (51) is in a state perpendicular to the axis of the plug gauge seat (21). The length of the plane support plate (55) is greater than the distance between two adjacent plane support blocks (511).

5. The test equipment for a hydraulic control system for a training simulator according to claim 2 or 4, characterized in that: A gas delivery channel (26) and a gas output channel (27) are provided in the plug gauge seat (21) and the stop gauge column (23). The gas delivery channel (26) is connected to the side of the rotary mounting groove (25) close to the plug gauge seat (21), and the gas output channel (27) is connected to the side of the rotary mounting groove (25) close to the axis of the plug gauge seat (21). The gas delivery channel (26) is connected to the gas supply source through a connecting pipe, and the gas supply source delivers gas at room temperature to the gas delivery channel (26). The gas output channel (27) is connected to the exhaust source through the connecting pipe, and the exhaust speed of the exhaust source is the same as the supply speed of the gas supply source. Brush groups (56) are installed in the areas corresponding to the rotary support blocks (53) at both ends of the rotary mounting groove (25).

6. The test equipment for a hydraulic control system for a training simulator according to claim 5, characterized in that: The multi-axis driver (4) comprises an X-axis driver (41), a Z-axis driver (42), a Y-axis driver (43) and a mounting seat (44); the X-axis driver (41) is fixedly mounted on the inner wall of the detection chamber (11); the Z-axis driver (42) is mounted on the movable end of the X-axis driver (41); the Y-axis driver (43) is mounted on the movable end of the Z-axis driver (42); and the mounting seat (44) is mounted on the movable end of the Y-axis driver (43); the X-axis driver (41) is used to drive the Z-axis driver (42) to move along the X-axis; the Z-axis driver (42) is used to drive the Y-axis driver (43) to move along the Z-axis; the Y-axis driver (43) is used to drive the mounting seat (44) to move along the Y-axis; the mounting seat (44) is rotatably mounted on the bottom of the mounting seat (44); and the plug gauge seat (21) is controlled to rotate forward and backward by a servo motor mounted on the mounting seat (44).

7. The test equipment for a hydraulic control system for a training simulator according to claim 1, characterized in that: A rotating driving wheel (6) is also provided in the detection chamber (11), a feed driver (61) is installed on the testing machine (1), a wheel frame (62) is fixedly installed on the movable end of the feed driver (61), the rotating driving wheel (6) is rotatably installed on the bottom of the wheel frame (62), and the rotating driving wheel (6) is controlled to rotate by a servo motor on the wheel frame (62), the fixed seat (3) includes a base (31), the base (31) is fixedly installed on the conveying chain (13), a clamping seat (32) is rotatably installed on the base (31), the hydraulic connecting pipe (a) is clamped in the clamping seat (32), the rotating driving wheel (6) is a gear structure, and a driven gear is provided at the bottom of the clamping seat (32).

8. The test equipment for a hydraulic control system for a training simulator according to claim 1, characterized in that: The through gauge post (22) and the stop gauge post (23) are both slidably mounted in the plug gauge seat (21), and pressure sensors (7) are provided between the through gauge post (22) and the plug gauge seat (21) and between the stop gauge post (23) and the plug gauge seat (21).

9. The test equipment for a hydraulic control system for a training simulator according to claim 8, characterized in that: A plurality of positioning rods (24) are provided on the plug gauge seat (21), and the positioning rods (24) are provided corresponding to the outer wall of the pipe mouth of the hydraulic connecting pipe (a), and the positioning rods (24) pass through the plug gauge seat (21) and are slidably matched with the plug gauge seat (21), and a protrusion (241) is fixedly connected to the middle of the positioning rod (24), and elastic parts are provided between both sides of the protrusion (241) and the plug gauge seat (21).

10. A method for testing the hydraulic control system testing device for a training simulator according to claim 1, characterized in that: The following steps are involved: Step 1: transport the fixing seat (3) and the hydraulic connecting pipe (a) on the fixing seat (3) to the cooler (12) to cool the hydraulic connecting pipe (a) so that the temperature of the hydraulic connecting pipe (a) is reduced to the low temperature state required by the simulation limit; Step 2: The cooled hydraulic connecting pipe (a) is transported to the inspection chamber (11) through the fixing seat (3), and the multi-axis driver (4) controls the gauge column (22) to feed into the internal thread hole (a1). The probe rod (51) is used to inspect the large diameter surface (a2) of the internal thread. If the gauge column (22) smoothly and completely enters the internal thread hole (a1), the next step is carried out. If not, the hydraulic connecting pipe (a) is judged to be unqualified. Step 3: Control the stop gauge pin (23) to enter the internal threaded hole (a1) again through the multi-axis driver (4); if the stop gauge pin (23) cannot completely enter the internal threaded hole (a1), the hydraulic connecting pipe (a) is determined to be qualified; if the stop gauge pin (23) smoothly and completely enters the internal threaded hole (a1), the hydraulic connecting pipe (a) is determined to be unqualified; Step 4: The hydraulic connecting pipe (a) is output from the inspection chamber (11) through the fixing seat (3), and qualified and unqualified products are classified.

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