A cylinder bore inspection device for engine block castings

Abstract

This invention provides a cylinder bore inspection device for engine block castings, relating to the field of engine inspection technology. The device includes an inspection base, with two lead screw transmission assemblies mounted on the upper side wall of the base. An inspection box is threadedly connected to the lead screws of the two lead screw transmission assemblies. An adjustable camera assembly is mounted above the inspection box. A support assembly is slidably connected to the upper side wall of the inspection box, and a connecting rod is connected to the bottom of the inspection box. This invention solves the problem that pushrod holes and bolt holes on the surface of the engine block are very small, making it difficult to capture image features of their inner walls, and that miniature camera devices have small single-image acquisition and low efficiency. By using a multi-hole mirror imaging assembly, the device can image cylinder bores of different diameters and shapes on the surface of the engine block, improving imaging efficiency and enabling imaging and inspection of cylinder bores with small diameters.

Description

Technical Field

[0001] This invention relates to the field of engine testing technology, specifically to a device for testing the cylinder bore of an engine block casting. Background Technology

[0002] During engine production, in order to ensure that the engine quality and performance meet the requirements, it is necessary to inspect the engine surface. Among them, the quality of the cast cylinder block on the engine surface directly affects the rated performance of the engine. Therefore, it is necessary to inspect the cylinder bores on the engine surface.

[0003] Authorization announcement number CN115508369B discloses a cylinder bore inspection device for engine block castings. This device can transform various cylinder bore surface problems into characteristic shadow features based on light illuminating the inner wall of the cylinder bore at an angle and image data taken under dark conditions. These shadow features are reflected as visually recognizable dot-shaped or line-shaped shadows, making identification and judgment simpler and clearer. This greatly reduces the probability of missed defects and errors. Furthermore, the device can simultaneously inspect multiple cylinder bores and the standardized positioning and acquisition can greatly improve inspection efficiency.

[0004] However, this device has certain problems when inspecting engine cylinder blocks with multiple apertures: While the device can significantly improve the accuracy of image acquisition when processing cylinder bores with various aperture shapes, it struggles to capture accurate images of smaller bores such as pushrod holes and bolt holes because the lighting and camera cannot penetrate deep into the bore. Typically, miniature cameras are used to capture images of these types of bores; however, these cameras are less effective at capturing images of large-diameter bores like those in cylinder blocks. The limited image capture capabilities of miniature cameras, influenced by factors such as the field of view, image resolution, and format, result in low efficiency and long inspection times. Based on these considerations, those skilled in the art have developed an engine cylinder block casting bore inspection device to address these problems. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a cylinder bore detection device for engine block castings. It solves the problem that pushrod holes and bolt holes on the surface of the engine block are relatively small, making it difficult to capture image features of their inner walls, and that miniature camera devices have small single-image acquisition and low efficiency. By using a multi-hole mirror imaging component, the device can image cylinder bores of different diameters and hole types on the surface of the engine block, which not only improves imaging efficiency but also enables imaging and detection of cylinder bores with tiny diameters.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: a cylinder bore detection device for engine block castings, comprising a detection base, two lead screw transmission assemblies mounted on the upper side wall of the detection base, a detection box threadedly connected to the lead screws of the two lead screw transmission assemblies, an adjustable camera assembly mounted above the detection box, a support assembly slidably connected to the upper side wall of the detection box, a connecting rod connected to the bottom of the detection box, and a multi-hole mirror imaging assembly fixedly connected to the other end of the connecting rod;

[0009] The porous mirror imaging assembly includes a mirror mounting bracket, several imaging mirror mechanisms, several connecting rods, a connecting plate, an outer diameter adjusting electric cylinder, a rotating rod, a crank rotating mechanism, a connecting crank, several spring telescopic rods, several supporting springs, a movable connecting plate, and a fixed connecting plate. The mirror mounting bracket has several mounting slots, and each of the mounting slots has a movable slot on one side wall. The imaging mirror mechanisms are slidably connected to the movable slots on both sides of the mounting slots. The connecting rods are fixedly connected to the upper side wall of the mirror mounting bracket, and the connecting plate is fixedly connected to the... At the top of the dry connecting rod, several supporting springs are fixedly connected to the inside of the mirror mounting bracket. The fixed connecting plate is fixedly connected to several supporting springs. The movable connecting plate is fixedly connected to the supporting spring on the left side. One end of several spring telescopic rods is fixedly connected to the outer wall of the movable connecting plate and the fixed connecting plate. The other end of several spring telescopic rods is fixedly connected to the top of several imaging mirror mechanisms. The rotating rod is fixed to the bottom of the movable end of the outer diameter adjusting electric cylinder. The connecting crank is rotatably connected to the bottom of the rotating rod. The crank rotating mechanism is fixed to the outside of the rotating rod.

[0010] Preferably, the imaging mirror mechanism includes a suspension bracket, a reflector frame, a soft light strip, a reflective mirror, a calibration ring, a tail stalk, and a mirror mounting bracket. The tail stalk is fixed to the rear side wall of the mirror mounting bracket and installed at the bottom of the suspension bracket. The reflector frame is fixed to the front side wall of the mirror mounting bracket. The soft light strip is installed inside the reflector frame. The reflective mirror is fixed to the top of the mirror mounting bracket, and the calibration ring is fixed to the outer periphery of the reflective mirror.

[0011] Preferably, the imaging mirror mechanism further includes a tail gear, a micro motor, a motor gear, and a drive shaft. The tail gear is installed in the middle of the tail trailer, the micro motor is installed on the suspension bracket, the drive shaft is installed on the movable end of the micro motor, and the motor gear is installed on the drive shaft and meshes with the tail gear.

[0012] Preferably, the crank rotation mechanism includes a crank rotation motor, a motor frame, and a drive rotation gear. The crank rotation motor is installed inside the motor frame, and the drive rotation gear is installed on the movable end of the crank rotation motor.

[0013] Preferably, a crank gear is installed on the outer wall of the connecting crank, and the crank gear meshes with the driving rotating gear.

[0014] Preferably, the support assembly includes a support frame and a T-shaped slider. The T-shaped slider is installed at the four corners of the upper side wall of the support frame. The upper side wall of the detection box is provided with a T-shaped groove. The T-shaped slider of the support frame is slidably connected in the T-shaped groove. Several ball bearings are installed on two connecting rods on the lower side wall of the support frame. The adjustable camera assembly is pressed on several ball bearings.

[0015] Preferably, a connection point adjusting electric cylinder is installed on the right side wall of the testing box, and the movable end of the connection point adjusting electric cylinder is fixedly connected to the support frame. A counterweight is installed on the left side wall of the testing box.

[0016] Preferably, the adjustable camera assembly includes an image acquisition camera, a mirror rotation motor, and a connecting assembly. The connecting assembly is installed above the image acquisition camera, and the mirror rotation motor is installed inside the connecting assembly.

[0017] Preferably, the connecting assembly includes a connecting frame and a connecting head. The connecting head is slidably connected within the connecting frame and is fixedly connected to the movable end of the mirror rotating motor. The connecting head has several placement slots, and each of the placement slots is provided with a connecting iron piece. Electromagnets are installed at both ends of the connecting frame.

[0018] (III) Beneficial Effects

[0019] This invention provides a device for inspecting cylinder bores in engine block castings. It possesses the following technical advantages and benefits:

[0020] This invention uses a multi-hole mirror imaging assembly to image the cylinder bores on the surface of the engine block. An outer diameter adjusting electric cylinder drives a movable connecting plate and a fixed connecting plate downwards, which in turn pushes the imaging mirror mechanism along the direction of the movable groove via a spring telescopic rod. This allows several imaging mirror mechanisms to adhere to the inner wall of the cylinder bore, capturing mirror images of the inner wall of the cylinder. These mirror images are then captured by an adjustable camera assembly, and a vision system detects defects such as burrs and cracks in the cylinder block. Due to the large number of imaging mirror mechanisms, mirror information from different locations on the cylinder bore can be captured simultaneously. This significantly improves the efficiency of cylinder bore quality inspection. For cylinder bores with relatively small diameters, the crank mechanism drives the connecting crank to rotate, aligning the bottom of the connecting crank with the center of the movable connecting plate. When the movable end of the outer diameter adjusting electric cylinder descends, the connecting crank will only drive the movable connecting plate and the imaging mirror mechanism connected to the movable connecting plate to descend. When the imaging mirror mechanism descends to the bottom, it is then sent into the cylinder bore through the lead screw transmission assembly. A single imaging mirror mechanism can acquire images of the inner wall of the cylinder bore with a small diameter, ensuring that inspection work can be completed for cylinder bores of different diameters. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a three-dimensional schematic diagram of the present invention;

[0023] Figure 3 This is a schematic diagram of the bottom of the present invention;

[0024] Figure 4 This is a schematic diagram of the adjustable camera assembly of the present invention;

[0025] Figure 5 This is a top view of the adjustable camera assembly of the present invention;

[0026] Figure 6 for Figure 5 A cross-sectional view along point AA;

[0027] Figure 7 This is a schematic diagram of the porous mirror imaging component of the present invention;

[0028] Figure 8 This is a partial exploded view of the porous mirror imaging component of the present invention;

[0029] Figure 9 for Figure 8 Enlarged diagram in the image.

[0030] Among them, 1. Detection base; 2. Screw transmission assembly; 3. Detection box; 4. Connection point adjustment electric cylinder; 5. Counterweight block; 6. Connecting rod; 700. Support assembly; 800. Adjustable camera assembly; 9. T-slot; 1000. Multi-hole mirror imaging assembly;

[0031] 701. Support bracket; 702. Ball bearing; 703. T-shaped slider;

[0032] 801. Image acquisition camera; 802. Mirror rotation motor; 8030. Connecting assembly; 8031. Connecting bracket; 8032. Connector; 8033. Placement slot; 8034. Connecting iron piece; 8035. Electromagnet;

[0033] 1001. Mirror mounting bracket; 10020. Imaging mirror mechanism; 1003. Connecting rod; 1004. Connecting plate; 1005. Outer diameter adjusting electric cylinder; 1006. Rotating rod; 10070. Crankshaft rotation mechanism; 1008. Connecting crankshaft; 1009. Crankshaft gear; 10010. Spring telescopic rod; 10011. Support spring; 10012. Movable connecting plate; 10013. Fixed connecting plate; 10014. Movable groove; 10015. 10021 Mounting slot; 10022 Suspension bracket; 10023 Reflector frame; 10024 Soft light strip; 10025 Reflective mirror; 10026 Calibration ring; 10027 Tail trailer; 10028 Tail gear; 10029 Micro motor; 10020 Motor gear; 100210 Drive shaft; 100211 Mirror mounting bracket; 10071 Crankshaft rotating motor; 10072 Motor frame; 10073 Drive rotating gear. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Example 1:

[0036] like Figure 1 and Figure 2As shown, this embodiment of the invention provides a cylinder bore inspection device for engine block castings, including an inspection base 1. Two lead screw transmission assemblies 2 are installed on the upper side wall of the inspection base 1. An inspection box 3 is threadedly connected to the lead screws of the two lead screw transmission assemblies 2. An adjustable camera assembly 800 is installed above the inspection box 3. A support assembly 700 is slidably connected to the upper side wall of the inspection box 3. A connecting rod 6 is connected to the bottom of the inspection box 3. A porous mirror imaging assembly 1000 is fixedly connected to the other end of the connecting rod 6. The inspection box 3 is moved back and forth by the lead screw transmission assemblies 2, thereby extending the porous mirror imaging assembly 1000 into the engine cylinder bore.

[0037] like Figure 7 and Figure 8 As shown, the porous mirror imaging assembly 1000 includes a mirror mounting bracket 1001, several imaging mirror mechanisms 10020, several connecting rods 1003, a connecting plate 1004, an outer diameter adjusting electric cylinder 1005, a rotating rod 1006, a crank rotating mechanism 10070, a connecting crank 1008, several spring telescopic rods 10010, several supporting springs 10011, a movable connecting plate 10012, and a fixed connecting plate 10013. The mirror mounting bracket 1001 has several mounting grooves 10015, and movable grooves 10014 are provided on both sides of the mounting grooves 10015. The several imaging mirror mechanisms 10020 are slidably connected in the movable grooves 10014 on both sides of the several mounting grooves 10015.

[0038] like Figure 9As shown, the imaging mirror mechanism 10020 includes a suspension bracket 10021, a reflector frame 10022, a soft light strip 10023, a reflective mirror 10024, a calibration ring 10025, a tail 10026, and a mirror mounting bracket 100211. The tail 10026 is fixed to the rear side wall of the mirror mounting bracket 100211 and is installed at the bottom of the suspension bracket 10021. The reflector frame 10022 is fixed to the front side wall of the mirror mounting bracket 100211. The soft light strip 10023 is installed inside the reflector frame 10022. The reflective mirror 10024 is fixed to the top of the mirror mounting bracket 100211, and the calibration ring 10025 is fixed to the outer periphery of the reflective mirror 10024. The imaging mirror mechanism 10020 acquires images of the cylinder bore inner wall through the reflecting mirror 10024. Since the internal environment of the cylinder bore is relatively dark, the inner wall of the cylinder bore can be illuminated by the soft light strip 10023, so that the defects on the inner wall of the cylinder bore can be more intuitively presented on the reflecting mirror 10024. The reflector frame 10022 can concentrate the diffused light source and refract it onto the inner wall of the cylinder bore, which not only improves the illumination effect of the light source, but also reflects the light source directly onto the mirror surface, interfering with the imaging effect. The calibration ring 10025 can assist the vision system in sampling. The calibration ring 10025 is coated with a brightly colored coating. The vision system only needs to acquire the image information inside the calibration ring 10025, which reduces the difficulty of visual analysis and improves the efficiency of visual inspection.

[0039] like Figure 7 and Figure 8As shown, several connecting rods 1003 are fixedly connected to the upper side wall of the mirror mounting bracket 1001, a connecting plate 1004 is fixedly connected to the top of the connecting rods 1003, several supporting springs 10011 are fixedly connected to the inside of the mirror mounting bracket 1001, a fixed connecting plate 10013 is fixedly connected to the supporting springs 10011, one end of several spring telescopic rods 10010 is fixedly connected to the outer side wall of the movable connecting plate 10012 and the fixed connecting plate 10013, and the other end of several spring telescopic rods 10010 is fixedly connected to the top of several imaging mirror mechanisms 10020. A rotating rod 1006 is fixed to the bottom of the movable end of the outer diameter adjusting electric cylinder 1005, a connecting crank rod 1008 is rotatably connected to the bottom of the rotating rod 1006, and a crank rod rotating mechanism 10070 is fixed to the outside of the rotating rod 1006. Imaging is achieved through a multi-hole mirror. The component 1000 performs imaging of the cylinder bores on the surface of the engine block. Before imaging, the cylinder bore diameter is adjusted accordingly based on the required measurement. The outer diameter adjustment electric cylinder 1005 drives the movable connecting plate 10012 and the fixed connecting plate 10013 to press down, which in turn pushes the imaging mirror mechanism 10020 along the direction of the movable groove 10014 via the spring telescopic rod 10010. This allows several imaging mirror mechanisms 10020 to be attached to the inner wall of the cylinder bore, and the mirror images of the inner wall of the cylinder are captured by these imaging mirror mechanisms 10020. Then, the adjustable camera component 800 captures these mirror images, and the vision system detects whether there are defects such as burrs or cracks in the cylinder block. Since there are a large number of imaging mirror mechanisms 10020, mirror information from different positions of the cylinder bore can be captured simultaneously, thus greatly improving the efficiency of cylinder bore quality inspection.

[0040] like Figure 9 As shown, the imaging mirror mechanism 10020 also includes a tail gear 10027, a micro motor 10028, a motor gear 10029, and a drive shaft 100210. The tail gear 10027 is installed in the middle of the tail support 10026. The micro motor 10028 is installed on the suspension bracket 10021. The drive shaft 100210 is installed on the movable end of the micro motor 10028. The motor gear 10029 is installed on the drive shaft 100210 and meshes with the tail gear 10027. The micro motor 10028 drives the motor gear 10029 to rotate. When the motor gear 10029 rotates, it drives the tail gear 10027 to rotate, thereby driving the mirror mounting bracket 100211 to rotate. By changing the tilt angle of the mirror mounting bracket 100211, image acquisition can be performed on cylinder bores of different configurations, enabling the device to perform visual inspection on cylinder bores of different shapes.

[0041] Example 2:

[0042] like Figure 7 and Figure 8As shown, this embodiment provides another implementation method based on Embodiment 1. The movable connecting plate 10012 is fixedly connected to the support spring 10011 on the left side. One end of several spring telescopic rods 10010 is fixedly connected to the outer side wall of the movable connecting plate 10012 and the fixed connecting plate 10013. The crank rotation mechanism 10070 includes a crank rotation motor 10071, a motor frame 10072, and a drive rotation gear 10073. The crank rotation motor 10071 is installed in the motor frame 10072, and the drive rotation gear 10073 is installed on the movable end of the crank rotation motor 10071. A crank gear 1009 is installed on the outer side wall of the connecting crank 1008. The crank gear 1009 and the drive gear 1009 are connected to the crank rotation mechanism 10071. The rotating gear 10073 meshes with the crankshaft rotating motor 10071, which drives the rotating gear 10073 to rotate. In turn, the crankshaft gear 1009 drives the connecting crankshaft 1008 to rotate. At this time, when the movable end of the outer diameter adjusting electric cylinder 1005 descends, the connecting crankshaft 1008 will only drive the movable connecting plate 10012 and the imaging mirror mechanism 10020 connected to the movable connecting plate 10012 to descend. When the imaging mirror mechanism 10020 descends to the bottom, it is then sent into the cylinder bore by the lead screw transmission assembly 2. The imaging mirror mechanism 10020 alone can collect images of the inner wall of the cylinder bore with a small aperture, ensuring that the detection work can be completed for cylinder bores with different apertures.

[0043] like Figure 1 and Figure 2 As shown, a connection point adjusting electric cylinder 4 is installed on the right side wall of the test box 3. The movable end of the connection point adjusting electric cylinder 4 is fixedly connected to the support frame 701. A counterweight 5 is installed on the left side wall of the test box 3. The connection point adjusting electric cylinder 4 drives the support frame 701 to move, and then the support frame 701 drives the image acquisition camera 801 in the adjustable camera assembly 800 to move to the left and right. The support frame 701 supports the adjustable camera assembly 800 to prevent it from breaking under load. The counterweight 5 on the left side can ensure that the weight distribution of the test box 3 remains balanced, preventing the screw from failing to transmit power to the test box 3 due to uneven weight distribution.

[0044] like Figure 4 , Figure 5 and Figure 6As shown, the adjustable camera assembly 800 includes an image acquisition camera 801, a mirror rotation motor 802, and a connecting assembly 8030. The connecting assembly 8030 is installed above the image acquisition camera 801, and the mirror rotation motor 802 is installed inside the connecting assembly 8030. The connecting assembly 8030 includes a connecting frame 8031 ​​and a connecting head 8032. The connecting head 8032 is slidably connected to the connecting frame 8031 ​​and is fixedly connected to the movable end of the mirror rotation motor 802. The connecting head 8032 has several placement slots 8033, and each of the placement slots 8033 is provided with a connecting iron piece 8034. Electromagnets 8035 are installed at both ends of the connecting frame 8031. Before the bracket 701 moves the image acquisition camera 801 in the adjustable camera assembly 800 to the left or right, the electromagnet 8035 is de-energized, and the connecting iron piece 8034 falls into the placement slot 8033. At this time, the mirror rotation motor 802 loses its fixed relationship with the image acquisition camera 801. When the connector 8032 arrives at the other end of the connecting bracket 8031, the electromagnet 8035 is energized again, and the connecting iron piece 8034 is stuck on the electromagnet 8035 at the other end of the connecting bracket 8031. At this time, the image acquisition camera 801 is directly above the left imaging mirror mechanism 10020, ensuring that when detecting cylinder bores with small apertures, the image acquisition camera 801 can capture images located inside the cylinder bore.

[0045] Working Principle: The cylinder bore diameter is adjusted accordingly based on the measurement requirements. The outer diameter adjustment electric cylinder 1005 drives the movable connecting plate 10012 and the fixed connecting plate 10013 downwards. This, in turn, pushes the imaging mirror mechanism 10020 along the movable groove 10014 via the spring telescopic rod 10010, allowing several imaging mirror mechanisms 10020 to adhere to the inner wall of the cylinder bore. The imaging mirror mechanism 10020 acquires the image of the cylinder bore's inner wall through the reflecting mirror 10024. Since the interior of the cylinder bore is relatively dark, the soft light strip 10023 illuminates the inner wall, making any defects on the inner wall more clearly visible on the reflecting mirror 10024. Furthermore, the reflector frame 10022 can focus the diffused light source and refract it onto the inner wall of the cylinder bore, improving the illumination effect and reflecting light. The direct sunlight on the mirror surface interferes with the imaging effect. The calibration ring 10025, however, assists the vision system in sampling (this vision system consists of an image acquisition device, image processing hardware, image processing software, algorithm tools, communication interface, and control system; the image acquisition device is the image acquisition camera 801 in this device; the image processing hardware, image processing software, algorithm tools, communication interface, and control system are not shown in the figure, but are common knowledge in the field and are not specifically limited here, therefore they will not be described in detail). The calibration ring 10025 is coated with a brightly colored coating, and the vision system only needs to acquire the image information inside the calibration ring 10025, reducing the difficulty of visual analysis (this function is implemented by image processing software, which may include, but is not limited to, OpenCV, MATLAB, and Adobe). (PHOTOSHOP, Halcon, and VisionPro, etc.) improve visual inspection efficiency. Several imaging mirror mechanisms 10020 acquire mirror images of the cylinder bore's inner wall, which are then captured by an adjustable camera assembly 800. The vision system then inspects the cylinder for defects such as burrs and cracks. Due to the large number of imaging mirror mechanisms 10020, mirror information from different locations in the cylinder bore can be acquired simultaneously, significantly improving cylinder bore quality inspection efficiency. A micro motor 10028 drives a motor gear 10029, which in turn drives a meshing tail gear. Rotation of 10027 causes rotation of the mirror mounting bracket 100211. By changing the tilt angle of the mirror mounting bracket 100211, image acquisition can be performed on cylinder bores of different configurations, enabling the device to perform visual inspection on cylinder bores of different shapes. Before the support bracket 701 moves the image acquisition camera 801 in the adjustable camera assembly 800 to the left or right, the electromagnet 8035 is de-energized, and the connecting iron part 8034 falls into the placement slot 8033. At this time, the mirror rotation motor 802 loses its fixed relationship with the image acquisition camera 801. When the connector 8032 reaches the other end of the connecting bracket 8031, the electromagnet 8035 is energized again.The connecting iron part 8034 is secured to the electromagnet 8035 at the other end of the connecting bracket 8031. At this time, the image acquisition camera 801 is directly above the left imaging mirror mechanism 10020, ensuring that when detecting cylinder bores with minute diameters, the image acquisition camera 801 can capture images located inside the cylinder bore.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cylinder bore inspection device for engine block castings, comprising an inspection base (1), characterized in that, Two lead screw transmission assemblies (2) are installed on the upper side wall of the detection base (1). The lead screws of the two lead screw transmission assemblies (2) are threadedly connected to the detection box (3). An adjustable camera assembly (800) is installed above the detection box (3). A support assembly (700) is slidably connected to the upper side wall of the detection box (3). A connecting rod (6) is connected to the bottom of the detection box (3). The other end of the connecting rod (6) is fixedly connected to a porous mirror imaging assembly (1000). The porous mirror imaging assembly (1000) includes a mirror mounting bracket (1001), several imaging mirror mechanisms (10020), several connecting rods (1003), a connecting plate (1004), an outer diameter adjusting electric cylinder (1005), a rotating rod (1006), a crank rotating mechanism (10070), a connecting crank (1008), several spring telescopic rods (10010), several supporting springs (10011), a movable connecting plate (10012), and a fixed coupling. The receiving plate (10013) has several mounting slots (10015) on the mirror mounting bracket (1001), and movable slots (10014) are provided on both sides of the mounting slots (10015). Several imaging mirror mechanisms (10020) are slidably connected in the movable slots (10014) on both sides of the mounting slots (10015). Several connecting rods (1003) are fixedly connected to the upper side wall of the mirror mounting bracket (1001). A connecting plate (1004) is fixedly connected to the top of several connecting rods (1003), several support springs (10011) are fixedly connected to the inside of the mirror mounting bracket (1001), the fixed connecting plate (10013) is fixedly connected to several support springs (10011), the movable connecting plate (10012) is fixedly connected to the support spring (10011) on the left side, and one end of several spring telescopic rods (10010) is fixedly connected to the movable connecting plate. The outer walls of the disk (10012) and the fixed connecting disk (10013) are connected to the top of the imaging mirror mechanism (10020) at the other end of several spring telescopic rods (10010). The rotating rod (1006) is fixed to the bottom of the movable end of the outer diameter adjusting electric cylinder (1005). The connecting crank rod (1008) is rotatably connected to the bottom of the rotating rod (1006). The crank rod rotating mechanism (10070) is fixed to the outside of the rotating rod (1006).

2. The cylinder bore detection device for engine block castings according to claim 1, characterized in that, The imaging mirror mechanism (10020) includes a suspension bracket (10021), a reflector frame (10022), a soft light strip (10023), a reflective mirror (10024), a calibration ring (10025), a tail (10026), and a mirror mounting bracket (100211). The tail (10026) is fixed to the rear side wall of the mirror mounting bracket (100211) and is installed at the bottom of the suspension bracket (10021). The reflector frame (10022) is fixed to the front side wall of the mirror mounting bracket (100211). The soft light strip (10023) is installed inside the reflector frame (10022). The reflective mirror (10024) is fixed to the top of the mirror mounting bracket (100211), and the calibration ring (10025) is fixed to the outer periphery of the reflective mirror (10024).

3. The cylinder bore detection device for engine block castings according to claim 2, characterized in that, The imaging mirror mechanism (10020) also includes a tail gear (10027), a micro motor (10028), a motor gear (10029), and a drive shaft (100210). The tail gear (10027) is installed in the middle of the tail trailer (10026). The micro motor (10028) is installed on the suspension bracket (10021). The drive shaft (100210) is installed on the movable end of the micro motor (10028). The motor gear (10029) is installed on the drive shaft (100210) and meshes with the tail gear (10027).

4. The cylinder bore detection device for engine block castings according to claim 1, characterized in that, The crank rotation mechanism (10070) includes a crank rotation motor (10071), a motor frame (10072), and a drive rotation gear (10073). The crank rotation motor (10071) is installed inside the motor frame (10072), and the drive rotation gear (10073) is installed on the movable end of the crank rotation motor (10071).

5. The cylinder bore detection device for engine block castings according to claim 4, characterized in that, A crank gear (1009) is installed on the outer wall of the connecting crank (1008), and the crank gear (1009) meshes with the driving rotating gear (10073).

6. The cylinder bore detection device for engine block castings according to claim 1, characterized in that, The support assembly (700) includes a support frame (701) and a T-shaped slider (703). The T-shaped slider (703) is installed at the four corners of the upper side wall of the support frame (701). The upper side wall of the detection box (3) is provided with a T-shaped groove (9). The T-shaped slider (703) of the support frame (701) is slidably connected in the T-shaped groove (9). Several balls (702) are installed on the two connecting rods on the lower side wall of the support frame (701). The adjustable camera assembly (800) is pressed on the balls (702).

7. The cylinder bore detection device for engine block castings according to claim 6, characterized in that, A connection point adjusting electric cylinder (4) is installed on the right side wall of the test box (3). The movable end of the connection point adjusting electric cylinder (4) is fixedly connected to the support frame (701). A counterweight block (5) is installed on the left side wall of the test box (3).

8. The cylinder bore detection device for engine block castings according to claim 1, characterized in that, The adjustable camera assembly (800) includes an image acquisition camera (801), a mirror rotation motor (802), and a connecting assembly (8030). The connecting assembly (8030) is installed above the image acquisition camera (801), and the mirror rotation motor (802) is installed inside the connecting assembly (8030).

9. The cylinder bore detection device for engine block castings according to claim 8, characterized in that, The connecting assembly (8030) includes a connecting frame (8031) and a connector (8032). The connector (8032) is slidably connected to the connecting frame (8031) and is fixedly connected to the movable end of the mirror rotation motor (802). The connector (8032) has several placement slots (8033) inside, and each of the several placement slots (8033) is provided with a connecting iron piece (8034). Electromagnets (8035) are installed at both ends of the connecting frame (8031).

Images