A compressor rotor base casting inspection device

Abstract

This invention relates to the field of casting geometry measurement technology, specifically a compressor rotor housing casting inspection device. It includes an operating support, with an electric clamp fixedly connected to the lower end of the operating support. An electric slide rail is located at the rear end of the operating support, and a movable seat is located inside the electric slide rail. A lifting rod is fixedly connected to the front end of the movable seat. A first inspection mechanism for inspecting the dual-rotor receiving cavity is located at the lower end of the lifting rod. A second inspection mechanism for inspecting the slide valve cavity is located at the front end of the assembly box. In the first inspection mechanism, a second gear drives the assembly disc to move continuously along an ∞-shaped circulating slide without stopping or reversing direction. Combined with real-time depth feedback from a depth probe, the first inspection component can traverse the entire irregular inner wall of the dual-rotor receiving cavity with a single drive source, avoiding the missed detection problem caused by incomplete coverage of the detection path in traditional inspection methods.

Description

Technical Field

[0001] This invention relates to the field of casting geometry measurement technology, specifically a compressor rotor seat casting inspection device. Background Technology

[0002] The compressor rotor housing is mostly made of gray cast iron, integrating a dual-rotor housing cavity and a slide valve cavity. The overall structure is an irregularly shaped, interconnected structure. Its casting precision directly determines the subsequent machining allowance and the sealing performance and volumetric efficiency of the entire assembly. According to the dimensional tolerance inspection requirements for castings, these workpieces must undergo multi-dimensional geometric measurement, including internal cavity linear dimensions, inner wall flatness, irregular curved surface contours, and non-smooth structural morphology, before leaving the factory.

[0003] Currently, existing rotor housing casting inspection devices suffer from the following technical shortcomings: First, most existing devices are designed for single-cavity inspection, such as only inspecting the dimensional deviations of male and female rotor holes or bearing holes. It is difficult to simultaneously complete the coordinated inspection of two independent irregular cavities, the double rotor housing cavity and the slide valve cavity, in a single clamping operation, resulting in low inspection efficiency and cumbersome procedures. Second, the slide valve cavity and the double rotor cavity are irregularly shaped structures connected vertically. Existing inspection methods require multiple clamping and separate inspections of the workpiece. Multiple positioning leads to inconsistent benchmarks, which can easily introduce cumulative errors. Furthermore, it is difficult to fully reflect the continuous changes in the contour and surface irregularities of the irregular inner wall, especially for cavities with complex curved contours, such as the double rotor housing cavity, where there is a lack of continuous contour measurement methods that can traverse the entire irregular inner wall. Third, for rotor housings of different specifications and models, existing devices usually require the replacement of different inspection tools or sensor components, resulting in poor adaptability and difficulty in achieving rapid model change inspection. Summary of the Invention

[0004] The purpose of this invention is to provide a compressor rotor housing casting inspection device, which aims to solve the problems in the existing rotor housing casting inspection process, such as the difficulty in simultaneously completing the coordinated inspection of two independent irregular cavities, the dual rotor housing cavity and the slide valve cavity, incomplete inspection coverage, single contour measurement method, and poor adaptability due to the need to change the inspection tool or sensor assembly for different specifications and models of rotor housing.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a compressor rotor housing casting inspection device, comprising an operating bracket, an electric clamp fixedly connected to the lower end of the operating bracket, an electric slide rail provided at the rear end of the operating bracket, a movable seat provided on the inner side of the electric slide rail, a lifting rod fixedly connected to the front end of the movable seat, a first inspection mechanism for inspecting a dual-rotor receiving cavity provided at the lower end of the lifting rod, the first inspection mechanism including a reversing component for adapting to the dual-rotor receiving cavity, a first inspection component for inspecting the inner wall of the dual-rotor receiving cavity, the reversing component including an assembly box fixedly connected to the lifting rod, and a second inspection mechanism for inspecting a slide valve cavity provided at the front end of the assembly box.

[0006] Preferably, the lower end of the assembly box has a cavity, and two fixed rotating shafts are fixedly connected to the inner side of the assembly box. The lower ends of the two fixed rotating shafts are fixedly connected to mutually symmetrical partitions, and mutually symmetrical guide plates are fixedly connected to the side of the two partitions that are close to each other. A circulating slide groove is formed between the assembly box and the partitions. A first motor is installed at the upper end of the assembly box, and a first gear is fixedly connected to the output shaft of the first motor.

[0007] Preferably, a depth probe is installed at the lower end of the fixed rotating shaft, and a second gear is rotatably connected to the outer side of each of the two fixed rotating shafts. The teeth of the two second gears mesh with each other. The outer side of the first gear meshes with a corresponding second gear, and multiple assembly slots are provided around the outer side of the second gear.

[0008] Preferably, an assembly circular plate is provided on the inner side of the assembly groove, and a connecting rod is fixedly connected to the lower end of the assembly circular plate. Two mutually symmetrical guide plates are fixedly connected to the outer side of the connecting rod, and the guide plates are slidably connected to the inner side of the slide groove between the assembly box and the partition.

[0009] Preferably, a pressure sensor assembly cylinder is fixedly connected to the lower end of the connecting rod. A pressure sensor is installed on the inner side of the pressure sensor assembly cylinder, and an industrial camera is installed on the outer side of the pressure sensor assembly cylinder. A triangular bracket is fixedly connected to the outer side of the pressure sensor assembly cylinder. A plurality of mutually symmetrical sleeves are fixedly connected to one side of the triangular bracket. A slider is fixedly connected to the inner side of the sleeve. A first electric actuator is slidably connected to the inner side of the sleeve. The housing of the first electric actuator is slidably connected to the slider, and the other end of the first electric actuator is slidably connected to the inner side of the pressure sensor assembly cylinder.

[0010] Preferably, the output shaft of the first electric actuator is fixedly connected to a roller, the outer side of the roller is provided with a rubber coating, the outer side of the roller housing is provided with a spring, a limit plate is fixedly connected to the outer side of the first electric actuator housing, one end of the spring is fixedly connected to the limit plate, and the other end of the spring is fixedly connected to the pressure sensor assembly cylinder.

[0011] Preferably, the second inspection mechanism includes a second detection component for swinging and detecting the slide valve cavity, and the second inspection mechanism includes an adjustment component for adjusting and adapting to different slide valve cavities.

[0012] Preferably, a mounting plate is fixedly connected to the front end of the assembly box, a second motor is mounted on the upper end of the mounting plate, a rotating plate is fixedly connected to the output shaft of the second motor, and an adjusting rod is provided at the lower end of the rotating plate.

[0013] Preferably, the lower end of the mounting plate is rotatably connected to a limiting shaft, and a sliding push rod is rotatably connected to the outer side of the limiting shaft. The sliding groove of the sliding push rod is slidably connected to an adjusting rod, and a connecting rod is fixedly connected to the front end of the sliding push rod. A laser measuring instrument is provided at the front end of the connecting rod.

[0014] Preferably, an adjusting slide bar is fixedly connected to the lower end of the rotating plate, a second electric push rod is installed at the front end of the adjusting slide bar, the output shaft of the second electric push rod passes through the adjusting slide bar, an adjusting block is fixedly connected to the output shaft of the second electric push rod, the adjusting block is slidably connected to the inner side of the adjusting slide bar, and the lower end of the adjusting block is fixedly connected to the adjusting rod.

[0015] Compared with the prior art, the beneficial effects of the embodiments of the present invention are: 1. In the first inspection mechanism, the second gear drives the assembly disc to move continuously along the ∞-shaped circulating slide without stopping or reversing direction. Combined with real-time depth feedback from the depth probe, this allows the first inspection component to traverse the entire irregular inner wall of the dual-rotor receiving cavity with a single drive source, avoiding the missed detection problems caused by incomplete coverage of the inspection path in traditional inspection methods. The alternating contact of multiple assembly discs ensures that multiple sets of inspection elements are simultaneously positioned on different phases of the ∞-shaped trajectory, significantly improving the inspection cycle and coverage density. Simultaneously, the lower end of the laser measuring instrument and the lower end of the guide plate remain at the same horizontal height, ensuring that the first inspection component and the second inspection mechanism are spatially offset. They do not conflict with each other throughout their entire stroke, achieving synchronous inspection of the dual cavities while guaranteeing inspection safety and overcoming the technical challenge of interference during parallel inspection by multiple mechanisms.

[0016] 2. In the first detection component, the roller is in constant pressure against the inner wall under the preload of the spring. When there are geometric fluctuations such as protrusions or depressions on the inner wall, the roller is forced to slide along the slider, compressing the spring through the limiting plate and simultaneously pressing the pressure sensor. This converts the radial dimensional deviation of the inner wall into an electrical signal in real time, achieving highly sensitive quantitative measurement of the linear dimensional deviation and surface flatness of the inner wall. The slider effectively limits the radial runout of the first electric push rod, ensuring detection stability and measurement accuracy. The rubber coating on the outside of the roller avoids scratching or indenting the inner wall of the casting, ensuring the integrity of the inspected product. The industrial camera simultaneously acquires images of the inner wall surface morphology, identifying casting defects and pore structures such as porosity, inclusions, and cracks, assisting in verifying the cavity contour features, and achieving a complementary fusion of contact mechanical sensing and non-contact visual inspection. Simultaneously, the laser measuring instrument performs continuous oscillating scanning detection of the valve cavity, combined with an aperture to enhance optical signal acquisition, comprehensively covering the curved inner wall, irregular curved surfaces, and non-smooth structures such as assembly holes and steps, achieving high-resolution measurement of the complex surface contour of the valve cavity. The depth probe detects depth data in real time, and, in conjunction with the feed stroke of the moving base, records and feeds back the detection height position, achieving a precise correlation between the inner wall dimensional deviation and axial position at each height section. This provides complete three-dimensional detection data for quality assessment, overcoming the incomplete information limitations of single detection methods.

[0017] 3. To address the differences in the inner diameter of the dual-rotor receiving cavities of different rotor housing specifications, the extension and retraction of the first electric actuator can precisely adjust the radial extension of the roller, allowing the roller to conform to the inner wall of cavities with different inner diameters for inspection, achieving adaptive adaptation to changes in the size specifications of the dual-rotor receiving cavities. For differences in the size of the slide valve cavity, the second electric actuator drives the adjusting block to slide along the adjusting slide rail, causing the adjusting rod to move radially and change its eccentricity relative to the axis of the rotating plate. When the eccentricity decreases, the swing range of the laser measuring instrument shrinks to accommodate the smaller slide valve cavity; when the eccentricity increases, the swing range expands to eliminate blind spots, ensuring the integrity and comprehensiveness of contour measurement. This bidirectional adaptive adjustment mechanism allows the same device to quickly adapt to rotor housing castings of different models and inner diameter specifications without replacing any parts, significantly reducing the investment cost and changeover time of inspection equipment in multi-variety production scenarios. During the synchronous downward movement of the lifting rod, the first inspection component and the second inspection mechanism simultaneously reach the bottom of their respective cavities, ensuring accurate and reliable spatial correspondence between the two sets of inspection data at any axial depth position. Ultimately, it achieves coordinated, efficient, and complete measurement of the internal contour, surface irregularity, and slide valve cavity dimensions of the dual rotor housing of the compressor rotor seat, significantly improving detection accuracy and efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the overall structure of the first inspection mechanism of the present invention; Figure 4 This is a top view of the overall structure of the steering component of the present invention; Figure 5 This is a top sectional view of the overall structure of the steering component of the present invention; Figure 6 This is an enlarged schematic diagram of a portion of the orientation component of the present invention; Figure 7 This is a schematic diagram of the overall structure of the contact detection component of the present invention; Figure 8 This is a partial structural diagram of the contact detection component of the present invention; Figure 9 This is a schematic diagram of the overall structure of the second inspection mechanism of the present invention; Figure 10 This is a top view schematic diagram of the overall structure of the second inspection mechanism of the present invention; Figure 11 This is a top view of the overall structure of the adjustment component of the present invention.

[0019] In the diagram: 1. Operating bracket; 2. Electric clamp; 3. Electric slide rail; 4. Moving seat; 5. Lifting rod; 6. First inspection mechanism; 61. Orientation assembly; 611. Assembly box; 612. Fixed rotating shaft; 613. Partition plate; 614. Guide plate; 615. First motor; 616. First gear; 617. Depth probe; 618. Second gear; 619. Assembly slot; 6110. Assembly circular plate; 6111. Connecting rod; 6112. Guide plate; 62. First detection assembly; 621. Pressure sensor assembly cylinder; 622. Industrial Camera; 623, Tripod; 624, Sleeve; 625, Slider; 626, First Electric Actuator; 627, Roller; 628, Spring; 629, Limiting Plate; 7, Second Inspection Mechanism; 71, Second Detection Component; 711, Mounting Plate; 712, Second Motor; 713, Rotating Plate; 714, Adjusting Rod; 715, Limiting Shaft; 716, Slide Push Rod; 717, Connecting Rod; 718, Laser Measuring Instrument; 719, Aperture; 72, Adjustment Component; 721, Adjusting Slide Rod; 722, Second Electric Actuator; 723, Adjusting Block. Detailed Implementation

[0020] The technical solution of this application will be further described in detail below with reference to specific embodiments.

[0021] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] Please see Figures 1-11 In this embodiment of the invention, a compressor rotor housing casting inspection device includes an operating bracket 1. An electric clamp 2 is fixedly connected to the lower end of the operating bracket 1. An electric slide rail 3 is provided at the rear end of the operating bracket 1. A movable seat 4 is provided on the inner side of the electric slide rail 3. A lifting rod 5 is fixedly connected to the front end of the movable seat 4. A first inspection mechanism 6 for inspecting the dual rotor receiving cavity is provided at the lower end of the lifting rod 5. The first inspection mechanism 6 includes an adjustment component 61 for adapting to the dual rotor receiving cavity. The first inspection mechanism 6 includes a first detection component 62 for inspecting the inner wall of the dual rotor receiving cavity. The adjustment component 61 includes an assembly box 611 fixedly connected to the lifting rod 5. A second inspection mechanism 7 for inspecting the slide valve cavity is provided at the front end of the assembly box 611.

[0023] Furthermore, the lower end of the assembly box 611 has a cavity, and two fixed rotating shafts 612 are fixedly connected to the inner side of the assembly box 611. The lower ends of the two fixed rotating shafts 612 are fixedly connected to mutually symmetrical partitions 613. The sides of the two partitions 613 that are close to each other are fixedly connected to mutually symmetrical guide plates 614. A circulating slide is formed between the assembly box 611 and the partitions 613. The upper end of the assembly box 611 is equipped with a first motor 615, and the output shaft of the first motor 615 is fixedly connected to a first gear 616.

[0024] The lower end of the assembly box 611 has a cavity to provide space for internal moving parts. It also serves as a housing, providing fixed support for the fixed rotating shaft 612 and the partition 613, and together with the partition 613, forms an ∞-shaped circulating groove. The fixed rotating shaft 612 is fixedly connected to the inside of the assembly box 611, providing a rotational support axis for the second gear 618, and a depth probe 617 is installed at its lower end. The partition 613 is fixedly connected to the lower end of the fixed rotating shaft 612 and is symmetrical to it, forming an ∞-shaped circulating groove with the assembly box 611, providing a sliding guide track for the guide plate 6112. The guide plate 614 is fixedly connected to the side of the two partitions 613 that are close to each other and is symmetrical to them, forming an obtuse-angled isosceles triangle. The angular structure provides a linear guiding transition when the guide plate 6112 moves to the reversing point at the edge of the partition 613, allowing the guide plate 6112 to smoothly enter the opposing slide groove from the original slide groove, achieving a stagnation-shaped cycle of reversal without stopping. The circulating slide groove formed between the assembly box 611 and the partition 613 is an ∞-shaped trajectory, used to constrain the guide plate 6112 to slide along a predetermined path. The first motor 615 is installed on the upper end of the assembly box 611, serving as the power source for the reversing assembly 61, and its output shaft drives the first gear 616 to rotate. The first gear 616 is fixed to the output shaft of the first motor 615 and meshes with one of the second gears 618, transmitting the power of the first motor 615 to the second gear 618.

[0025] Furthermore, a depth probe 617 is installed at the lower end of the fixed rotating shaft 612, and a second gear 618 is rotatably connected to the outer side of both fixed rotating shafts 612. The teeth of the two second gears 618 mesh with each other. The outer side of the first gear 616 meshes with a corresponding second gear 618. Multiple assembly slots 619 are provided around the outer side of the second gear 618.

[0026] A depth probe 617 is installed at the lower end of the fixed rotating shaft 612 to detect the depth data of the current position in real time. This probe, in conjunction with the feed stroke of the moving seat 4, records and feeds back the detected height position, achieving depth positioning and measurement. A second gear 618 is rotatably connected to the outer side of each of the two fixed rotating shafts 612. The teeth of the two second gears 618 mesh with each other to achieve synchronous reverse rotation. The outer side of the first gear 616 meshes with a corresponding second gear 618, inputting power to the gear pair. Multiple mounting brackets are arranged around the outer side of the second gear 618. The groove 619 is used to embed the assembly round plate 6110. One assembly round plate 6110 is respectively engaged with the corresponding assembly groove 619 on the outer side of the two second gears 618. It is used to alternately receive during the reversing process. When the assembly round plate 6110 moves to the reversing position with one side of the second gear 618, it slides into the corresponding assembly groove 619 of the other side of the second gear 618 to complete the trajectory switching. When the second gear 618 rotates, it pushes the assembly round plate 6110 to move through the groove wall, thereby transmitting the rotational driving force of the gear to the connecting rod 6111 and the guide plate 6112.

[0027] Furthermore, an assembly circular plate 6110 is provided on the inner side of the assembly groove 619. A connecting rod 6111 is fixedly connected to the lower end of the assembly circular plate 6110. Two mutually symmetrical guide plates 6112 are fixedly connected to the outer side of the connecting rod 6111. The guide plates 6112 are slidably connected to the inner side of the groove between the assembly box 611 and the partition plate 613.

[0028] The assembly disc 6110 is embedded in the inner side of the assembly groove 619. While rotating with the second gear 618, it drives the connecting rod 6111. The lower end of the assembly disc 6110 is fixedly connected to the connecting rod 6111. The upper end of the connecting rod 6111 is connected to the assembly disc 6110, and the lower end is connected to the pressure sensor assembly cylinder 621, transmitting the ∞-shaped cyclic motion to the first detection component 62. Two mutually symmetrical guide plates 6112 are fixedly connected to the outer side of the connecting rod 6111. The guide plates 6112 are slidably connected to the inner side of the slide groove between the assembly box 611 and the partition 613. The forced constraint of the slide groove causes the connecting rod 6111 to move along the ∞-shaped trajectory, and at the reversing point, it is guided by the guide plate 614 to complete the reversal, ensuring that the detection component traverses the entire inner wall according to the predetermined path.

[0029] Furthermore, a pressure sensor assembly cylinder 621 is fixedly connected to the lower end of the connecting rod 6111. A pressure sensor is installed inside the pressure sensor assembly cylinder 621, and an industrial camera 622 is installed on the outside of the pressure sensor assembly cylinder 621. A triangular bracket 623 is fixedly connected to the outside of the pressure sensor assembly cylinder 621. A plurality of mutually symmetrical sleeves 624 are fixedly connected to one side of the triangular bracket 623. A slider 625 is fixedly connected to the inside of the sleeve 624. A first electric push rod 626 is slidably connected to the inside of the sleeve 624. The housing of the first electric push rod 626 is slidably connected to the slider 625, and the other end of the first electric push rod 626 is slidably connected to the inside of the pressure sensor assembly cylinder 621.

[0030] A pressure sensor assembly cylinder 621 is fixedly connected to the lower end of the connecting rod 6111. The pressure sensor assembly cylinder 621 serves as the mounting carrier for the pressure sensor, with the pressure sensor installed inside. Driven by the connecting rod 6111, it moves along an ∞-shaped trajectory, causing the roller 627 to traverse the entire inner wall and transmit the pressure changes from the inner wall fluctuations to the inner pressure sensor. An industrial camera 622 is installed on the outer side of the pressure sensor assembly cylinder 621 to simultaneously acquire images of the inner wall surface morphology, identify surface defects and hole structures, and assist in verifying the cavity contour features. A triangular bracket 623 is fixedly connected to the outer side of the pressure sensor assembly cylinder 621, providing evenly distributed mounting support for multiple sleeves 624. Multiple symmetrical sleeves 624 are fixedly connected to one side of 623. The sleeves 624 provide installation and sliding guide space for the slider 625 and the first electric push rod 626. The slider 625 is fixedly connected to the inner side of the sleeve 624. The slider 625 is slidably connected to the housing of the first electric push rod 626, which limits the radial deflection of the first electric push rod 626 and ensures the stability and measurement accuracy of the detection motion. The first electric push rod 626 is slidably connected to the inner side of the sleeve 624. The housing of the first electric push rod 626 is slidably connected to the slider 625. The other end of the first electric push rod 626 is slidably connected to the inner side of the pressure sensor assembly cylinder 621. The radial extension of the roller 627 can be adjusted by its extension and retraction to adapt to the fitting detection requirements of cavities with different inner diameters.

[0031] Furthermore, the output shaft of the first electric actuator 626 is fixedly connected to a roller 627. The outer side of the roller 627 is coated with a rubber coating. A spring 628 is provided on the outer side of the housing of the roller 627. A limit piece 629 is fixedly connected to the outer side of the housing of the first electric actuator 626. One end of the spring 628 is fixedly connected to the limit piece 629, and the other end of the spring 628 is fixedly connected to the pressure sensor assembly cylinder 621.

[0032] The output shaft of the first electric actuator 626 is fixedly connected to a roller 627. The roller 627 rolls directly against the inner wall of the dual rotor receiving cavity. When there are fluctuations such as protrusions or depressions in the inner wall, the first electric actuator 626 is driven to slide inward by the force, transmitting the radial dimensional deviation of the inner wall to the pressure sensor. The outer side of the roller 627 is provided with a rubber coating to prevent the roller 627 from scratching the inner wall surface of the casting during the detection process. A spring 628 is provided on the outer side of the housing of the roller 627, and a limiter is fixedly connected to the outer side of the housing of the first electric actuator 626. One end of the spring 628 is fixedly connected to the limiting plate 629, and the other end of the spring 628 is fixedly connected to the pressure sensor assembly cylinder 621. The pre-tightening force of the spring 628 continuously pushes the first electric push rod 626 to extend outward, so that the roller 627 is in constant pressure against the inner wall. At the same time, when the roller 627 slides inward due to the fluctuation of the inner wall, the limiting plate 629 compresses the spring 628, converting the displacement into the compression force of the spring 628 and transmitting it to the pressure sensor, so as to realize the quantitative measurement of the linear dimensional deviation of the inner wall and the surface flatness.

[0033] Furthermore, the second inspection mechanism 7 includes a second detection component 71 for swinging and detecting the slide valve cavity, and the second inspection mechanism 7 includes an adjustment component 72 for adjusting and adapting to different slide valve cavities.

[0034] The second inspection mechanism 7 includes a second inspection component 71 for swinging inspection of the valve cavity. The second inspection component 71 is used to perform swinging scanning inspection on the valve cavity to achieve contour measurement of structures such as the arc-shaped inner wall, irregular curved surface, assembly hole, and steps of the valve cavity. The second inspection mechanism 7 also includes an adjustment component 72 for adjusting and adapting to different valve cavities. The adjustment component 72 is used to adjust the swing amplitude of the laser measuring instrument 718 according to the size difference of the valve cavity to adapt to the inspection requirements of different specifications of valve cavities, avoid blind spots in inspection, and ensure the integrity of contour measurement.

[0035] Furthermore, a mounting plate 711 is fixedly connected to the front end of the assembly box 611, a second motor 712 is mounted on the upper end of the mounting plate 711, a rotating plate 713 is fixedly connected to the output shaft of the second motor 712, and an adjusting rod 714 is provided at the lower end of the rotating plate 713.

[0036] A mounting plate 711 is fixedly connected to the front end of the assembly box 611. The mounting plate 711 provides mounting support for the second motor 712 and the limiting shaft 715. The second motor 712 is installed on the upper end of the mounting plate 711. The second motor 712 serves as the power source for the second inspection mechanism 7, and its output shaft drives the rotating plate 713 to rotate. The output shaft of the second motor 712 is fixedly connected to the rotating plate 713. The rotating plate 713 rotates under the drive of the second motor 712. An adjusting rod 714 is provided at the lower end. The rotation drives the adjusting rod 714 to perform a circular trajectory. The adjusting rod 714 is provided at the lower end of the rotating plate 713. The adjusting rod 714 moves in a circular motion with the rotating plate 713 and is slidably connected in the groove of the sliding push rod 716. It pushes the sliding push rod 716 to reciprocate and swing around the limiting shaft 715, converting the rotational motion into a swing driving force.

[0037] Furthermore, the lower end of the mounting plate 711 is rotatably connected to a limiting shaft 715, and a sliding push rod 716 is rotatably connected to the outer side of the limiting shaft 715. The sliding groove of the sliding push rod 716 is slidably connected to the adjusting rod 714. A connecting rod 717 is fixedly connected to the front end of the sliding push rod 716, and a laser measuring instrument 718 is provided at the front end of the connecting rod 717. The laser measuring instrument 718 is a laser contour scanning sensor.

[0038] The lower end of the mounting plate 711 is rotatably connected to a limiting shaft 715, which provides a rotation axis for the deflection and swing of the slide push rod 716. The slide push rod 716 is rotatably connected to the outer side of the limiting shaft 715. The slide groove of the slide push rod 716 is slidably connected to the adjusting rod 714. Under the push of the adjusting rod 714, it reciprocates around the limiting shaft 715 and transmits the swing to the laser measuring instrument 718 through the connecting rod 717. The front end of the slide push rod 716 is fixedly connected to the connecting rod 717. A laser measuring instrument 718 is provided, which transmits the swing of the slide push rod 716 to the laser measuring instrument 718. Driven by the slide push rod 716 and the connecting rod 717, the laser measuring instrument 718 performs continuous swing-type scanning detection on the inner wall of the slide valve cavity, realizing the measurement of the inner wall contour, irregular curved surface, assembly hole, step and other structures of the slide valve cavity. An aperture 719 is provided around the front end of the laser measuring instrument 718, which provides auxiliary illumination, enhances the optical signal acquisition effect, and improves the acquisition clarity and detection accuracy of the inner wall contour.

[0039] Furthermore, an adjusting slide bar 721 is fixedly connected to the lower end of the rotating plate 713. A second electric push rod 722 is installed at the front end of the adjusting slide bar 721. The output shaft of the second electric push rod 722 passes through the adjusting slide bar 721. An adjusting block 723 is fixedly connected to the output shaft of the second electric push rod 722. The adjusting block 723 is slidably connected to the inner side of the adjusting slide bar 721. The lower end of the adjusting block 723 is fixedly connected to the adjusting rod 714.

[0040] An adjusting slide rod 721 is fixedly connected to the lower end of the rotating plate 713. The adjusting slide rod 721 provides a linear sliding guide track for the adjusting block 723. A second electric actuator 722 is installed at the front end of the adjusting slide rod 721. The output shaft of the second electric actuator 722 passes through the adjusting slide rod 721 and is fixedly connected to the adjusting block 723. By extending and retracting, it drives the adjusting block 723 to slide along the adjusting slide rod 721, changing the eccentricity of the adjusting rod 714 relative to the axis of the rotating plate 713. The output shaft of the second electric actuator 722 is fixedly connected to the adjusting block 723. 23. The adjusting block 723 is slidably connected to the inner side of the adjusting slide bar 721, and its lower end is fixedly connected to the adjusting rod 714. Driven by the second electric push rod 722, it slides along the adjusting slide bar 721, causing the adjusting rod 714 to move radially, thereby adjusting the eccentricity. The adjusting rod 714 changes its position radially as driven by the adjusting block 723. When the adjusting rod 714 is closer to the axis of the rotating plate 713, the swing range is smaller and it is suitable for small-sized slide valve chambers. When it is farther away from the axis, the swing range is larger and it eliminates detection dead angles, ensuring the integrity of contour measurement.

[0041] Working principle: Step 1: Position the rotor seat casting to be tested on the bearing end face of the electric clamp 2, and center and clamp it using the electric clamp 2. Then, start the electric slide rail 3 at the rear of the operating bracket 1. The output shaft of the electric slide rail 3 drives the moving seat 4 to feed vertically. The moving seat 4, through the lifting rod 5 fixedly connected to it, synchronously drives the first inspection mechanism 6 and the second inspection mechanism 7 to move downward in a straight line, so that the detection end of the first inspection mechanism 6 extends into the double rotor receiving cavity of the rotor seat, and at the same time, the detection end of the second inspection mechanism 7 extends into the corresponding slide valve cavity, completing the pre-test station preparation. Step two: Activate the reversing assembly 61 of the first inspection mechanism 6. Start the first motor 615 at the upper end of the assembly box 611. The output shaft of the first motor 615 drives the first gear 616 to rotate. The first gear 616 drives a second gear 618 meshing with it to rotate around a corresponding fixed shaft 612. This second gear 618 drives another second gear 618 to rotate synchronously in the opposite direction through gear meshing. When the second gear 618 rotates, the assembly groove 619 on its outer side drives the assembly disc 6110 embedded therein to move. The assembly disc 6110 drives the connecting rod 6111 and the guide plate 6112 fixed to its outer side, causing them to move along the ∞-shaped circulating groove formed between the assembly box 611 and the partition plate 613. When the guide plate 6112 moves along the slide groove to the edge reversing point of the partition 613, it is guided in a straight line by the obtuse-angled isosceles triangular guide plate 614 fixed to the side of the partition 613. The guide plate 6112 slides out of the original slide groove along one of the inclined sides of the guide plate 614, and is simultaneously received by another guide plate 614 on the outer side of the partition 613. It is then guided along the inclined side of the guide plate 614 into the slide groove on the other side, so that the corresponding assembly circular plate 6110 is received by the assembly groove 619 on the outer side of the other partition 613, thereby completing the non-stop reversing and continuous cyclic movement of the ∞-shaped circulating slide groove. During the movement, the depth probe 617 fixed to the lower end of the fixed rotating shaft 612 detects the depth data of the current position in real time, and records and feeds back the detected height position in conjunction with the feed stroke of the moving seat 4. Step 3: The connecting rod 6111 drives the pressure sensor assembly cylinder 621 to move synchronously along the ∞-shaped trajectory. The pressure sensor assembly cylinder 621 drives multiple sets of rollers 627 to move against the inner wall of the dual rotor receiving cavity through the triangular bracket 623. The elastic force of the spring 628 continuously pushes the first electric push rod 626 to extend outward along the sleeve 624, so that the rollers 627 are in constant pressure against the inner wall. When there are geometric dimensional fluctuations such as protrusions, depressions, and steps on the inner wall of the cavity, the rollers 627 are forced to drive the first electric push rod 626 to slide along the slider 625 towards the inside of the pressure sensor assembly cylinder 621. Through the limiting piece 629, the spring 628 is compressed, and the pressure sensor on the inside of the pressure sensor assembly cylinder 621 is pressed synchronously, converting the radial dimensional deviation of the inner wall into an electrical signal, realizing the quantitative measurement of the linear dimensional deviation and surface flatness of the inner wall. The slider 625 restricts the radial deflection of the first electric push rod 626 to ensure the stability of the detection movement and the measurement accuracy. The rubber coating on the outside of the rollers 627 can prevent scratching the inner wall surface of the casting during the detection process. The industrial camera 622 simultaneously acquires images of the inner wall surface morphology, identifies surface defects and hole structures, and assists in verifying the cavity contour features. For rotor seat castings with different inner diameter specifications, the radial extension of the roller 627 can be adjusted by the telescopic adjustment of the first electric actuator 626 to adapt to the fitting and inspection requirements of different cavity sizes; Step four: While the dual-rotor receiving cavity is being inspected, the second inspection mechanism 7 simultaneously performs inspection of the slide valve cavity. The second motor 712 on the upper end of the mounting plate 711 is activated, its output shaft driving the rotating plate 713 to rotate. The rotating plate 713 drives the adjusting rod 714 to perform circular motion. Through the sliding engagement between the adjusting rod 714 and the slide push rod 716, the slide push rod 716 is driven to reciprocate around the limiting shaft 715. This, in turn, drives the laser measuring instrument 718 to oscillate back and forth within a corresponding angle range via the connecting rod 717, continuously sweeping the arc-shaped inner wall of the slide valve cavity. The aperture 719 provides auxiliary illumination, improving the clarity of the inner wall contour acquisition. Combined with the axial feed of the lifting rod 5, this achieves full-depth measurement of the inner wall contour of the slide valve cavity, covering the morphological inspection of irregular curved surfaces and non-smooth structures such as assembly holes and steps. Step 5: Addressing the size differences in the valve cavity of rotor seats of different specifications, the second electric actuator 722 is activated. Its output shaft drives the adjusting block 723 to slide along the adjusting slide rail 721, changing the eccentricity of the adjusting rod 714 relative to the axis of the rotating plate 713. The closer the adjusting rod 714 is to the axis of the rotating plate 713, the smaller the swing angle range of the laser measuring instrument 718, suitable for detecting small-sized valve cavities. The farther the adjusting rod 714 is from the axis of the rotating plate 713, the larger the swing angle range, which can expand the scanning coverage area, eliminate detection blind spots, and ensure the integrity of contour measurement. During the synchronous downward movement of the two mechanisms driven by the lifting rod 5, when the first detection component 62 moves to the lowest end of the dual-rotor receiving cavity, the second inspection mechanism 7 moves synchronously to the bottom inner wall of the valve cavity, ensuring that the strokes of both are synchronized. Meanwhile, the lower end of the laser measuring instrument 718 and the lower end of the guide plate 6112 are always kept at the same horizontal height, so that when the first detection component 62 moves horizontally along the ∞-shaped trajectory, it is spatially offset from the swing-type detection of the second inspection mechanism 7. The two do not conflict with each other in position throughout the entire detection stroke, ensuring coordinated, efficient and complete measurement of the internal contour, surface irregularity and slide valve cavity contour dimensions of the rotor seat dual rotor receiving cavity.

[0042] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these should also be considered within the scope of protection of the present invention. These will not affect the effectiveness of the implementation of the present invention or the practicality of the patent.

Claims

1. A compressor rotor housing casting inspection device, comprising an operating support (1), characterized in that, An electric clamp (2) is fixedly connected to the lower end of the operating bracket (1). An electric slide rail (3) is provided at the rear end of the operating bracket (1). A movable seat (4) is provided on the inner side of the electric slide rail (3). A lifting rod (5) is fixedly connected to the front end of the movable seat (4). A first inspection mechanism (6) for detecting the dual rotor receiving cavity is provided at the lower end of the lifting rod (5). The first inspection mechanism (6) includes a reversing component (61) for adapting to the dual rotor receiving cavity. The first inspection mechanism (6) includes a first detection component (62) for detecting the inner wall of the dual rotor receiving cavity. The reversing component (61) includes an assembly box (611) fixedly connected to the lifting rod (5). A second inspection mechanism (7) for detecting the slide valve cavity is provided at the front end of the assembly box (611).

2. The compressor rotor housing casting inspection device according to claim 1, characterized in that, The lower end of the assembly box (611) is provided with a cavity. Two fixed rotating shafts (612) are fixedly connected to the inner side of the assembly box (611). The lower ends of the two fixed rotating shafts (612) are fixedly connected with mutually symmetrical partitions (613). The sides of the two partitions (613) that are close to each other are fixedly connected with mutually symmetrical guide plates (614). A circulating slide groove is formed between the assembly box (611) and the partitions (613). A first motor (615) is installed at the upper end of the assembly box (611). The output shaft of the first motor (615) is fixedly connected with a first gear (616).

3. The compressor rotor housing casting inspection device according to claim 2, characterized in that, A depth probe (617) is installed at the lower end of the fixed rotating shaft (612). A second gear (618) is rotatably connected to the outer side of both fixed rotating shafts (612). The teeth of the two second gears (618) mesh with each other. The outer side of the first gear (616) meshes with a corresponding second gear (618). Multiple assembly slots (619) are opened around the outer side of the second gear (618).

4. The compressor rotor housing casting inspection device according to claim 3, characterized in that, An assembly disc (6110) is provided on the inner side of the assembly groove (619). A connecting rod (6111) is fixedly connected to the lower end of the assembly disc (6110). Two mutually symmetrical guide plates (6112) are fixedly connected to the outer side of the connecting rod (6111). The guide plates (6112) are slidably connected to the inner side of the groove between the assembly box (611) and the partition (613).

5. The compressor rotor housing casting inspection device according to claim 4, characterized in that, The lower end of the connecting rod (6111) is fixedly connected to a pressure sensor assembly cylinder (621). A pressure sensor is installed on the inner side of the pressure sensor assembly cylinder (621). An industrial camera (622) is installed on the outer side of the pressure sensor assembly cylinder (621). A triangular bracket (623) is fixedly connected to the outer side of the pressure sensor assembly cylinder (621). A plurality of mutually symmetrical sleeves (624) are fixedly connected to one side of the triangular bracket (623). A slider (625) is fixedly connected to the inner side of the sleeve (624). A first electric push rod (626) is slidably connected to the inner side of the sleeve (624). The housing of the first electric push rod (626) is slidably connected to the slider (625). The other end of the first electric push rod (626) is slidably connected to the inner side of the pressure sensor assembly cylinder (621).

6. The compressor rotor housing casting inspection device according to claim 5, characterized in that, The output shaft of the first electric actuator (626) is fixedly connected to a roller (627). The outer side of the roller (627) is provided with a rubber coating. A spring (628) is provided on the outer side of the housing of the roller (627). A limiting piece (629) is fixedly connected to the outer side of the housing of the first electric actuator (626). One end of the spring (628) is fixedly connected to the limiting piece (629), and the other end of the spring (628) is fixedly connected to the pressure sensor assembly cylinder (621).

7. The compressor rotor housing casting inspection device according to claim 1, characterized in that, The second inspection mechanism (7) includes a second detection component (71) for swinging to detect the slide valve cavity, and the second inspection mechanism (7) includes an adjustment component (72) for adjusting to adapt to different slide valve cavities.

8. The compressor rotor housing casting inspection device according to claim 1, characterized in that, The front end of the assembly box (611) is fixedly connected to a mounting plate (711), a second motor (712) is mounted on the upper end of the mounting plate (711), the output shaft of the second motor (712) is fixedly connected to a rotating plate (713), and an adjusting rod (714) is provided at the lower end of the rotating plate (713).

9. The compressor rotor housing casting inspection device according to claim 8, characterized in that, The lower end of the mounting plate (711) is rotatably connected to a limiting shaft (715). A sliding push rod (716) is rotatably connected to the outer side of the limiting shaft (715). The sliding groove of the sliding push rod (716) is slidably connected to the adjusting rod (714). A connecting rod (717) is fixedly connected to the front end of the sliding push rod (716). A laser contour scanning sensor (718) is provided at the front end of the connecting rod (717). An aperture (719) is arranged around the front end of the laser contour scanning sensor (718).

10. The compressor rotor housing casting inspection device according to claim 9, characterized in that, The lower end of the rotating plate (713) is fixedly connected to an adjusting slide rod (721). A second electric push rod (722) is installed at the front end of the adjusting slide rod (721). The output shaft of the second electric push rod (722) passes through the adjusting slide rod (721). An adjusting block (723) is fixedly connected to the output shaft of the second electric push rod (722). The adjusting block (723) is slidably connected to the inner side of the adjusting slide rod (721). The lower end of the adjusting block (723) is fixedly connected to the adjusting rod (714).

Images