Engine piston operation state detection device

Abstract

The invention belongs to the technical field of engine detection devices, and particularly relates to an engine piston operation state detection device which comprises a conveying belt mechanism, a visual detection mechanism and a vibration detection mechanism. Supporting vertical rods are installed on the front side and the rear side of the conveying belt mechanism correspondingly, the structures of the two supporting vertical rods are the same, and the two supporting vertical rods are arranged in a staggered mode. A visual detection mechanism and a vibration detection mechanism are installed on the two supporting vertical rods respectively. The visual detection mechanism is located on the left side of the vibration detection mechanism; the visual detection mechanism comprises a mounting frame, a sliding machine box, a machine box driving motor and a visual sensor; the detection device of the scheme has good universality, can meet the detection work of engines of different specifications, and is very flexible. The expandability of a hydraulic clamp in the vibration detection mechanism enables the vibration detection mechanism to adapt to engines of different sizes. And the plurality of vibration detection heads flexibly move on the track rod, so that pistons at different positions can be detected, and the comprehensiveness and accuracy of detection are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of engine detection devices, and more specifically to an engine piston operating state detection device. Background Art

[0002] In the production process of modern engines, as a key component, the operating state of the engine piston directly affects the performance and reliability of the engine. However, there are many problems in the current detection of the operating state of the engine piston.

[0003] Traditional detection methods mainly rely on manual detection, with low detection efficiency and being easily affected by human factors, making it difficult to achieve all-round and high-precision detection of the engine piston.

[0004] In addition, existing detection devices also have deficiencies in mechanical structure and automation level, with poor adaptability to engines of different specifications, unable to perform mixed detection of engines of different specifications, and each modification of the detection production line being extremely time-consuming and laborious, increasing the labor intensity and detection cost, and it is difficult to achieve rapid and continuous detection of the engine.

[0005] Also for the above reasons, we have proposed an engine piston operating state detection device. Summary of the Invention

[0006] The purpose of the present invention is to provide an engine piston operating state detection device to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the present invention provides the following technical solution: An engine piston operating state detection device, comprising a conveyor belt mechanism, a vision detection mechanism, and a vibration detection mechanism; Supporting vertical rods are installed on both the front and rear sides of the conveyor belt mechanism. The two supporting vertical rods have the same structure and are arranged in a staggered manner; a vision detection mechanism and a vibration detection mechanism are respectively installed on the two supporting vertical rods; the vision detection mechanism is located on the left side of the vibration detection mechanism; The vision detection mechanism includes a mounting frame, a sliding machine box, a machine box driving motor, and a vision sensor; a mounting seat is provided on one side of the mounting frame close to the supporting vertical rod; a track panel is provided on the top of the mounting frame, and a limiting rod is provided on the right side of the mounting frame. The sliding machine box is arranged on the right side of the mounting frame and is slidably installed on the limiting rod; A machine box driving motor is installed on the left side of the top of the sliding machine box. When the machine box driving motor operates, it moves back and forth along the track panel, and the sliding machine box is displaced synchronously with the machine box driving motor; a vision sensor is provided at the lower right of the sliding machine box, The vibration detection mechanism includes a hydraulic clamp, mounting rods, track rods, and vibration detection heads. Two mounting rods are symmetrically arranged on the front side of the hydraulic clamp. Track rods are symmetrically installed at the upper and lower ends on the front sides of the two mounting rods. A plurality of vibration detection heads are sleeved on the track rods. The vibration detection head includes a sliding block, a detection panel, and a sliding block drive motor. The sliding block is slidably sleeved on the track rod, and a sliding block drive motor is installed on the top of the sliding block. The vibration detection head changes the detection position along the track rod driven by the sliding block drive motor.

[0008] Preferably, sliding grooves are formed on the opposite sides of the two support vertical rods. Moving blocks are slidably installed in the sliding grooves. A screw drive motor is installed on the top of the support vertical rod. A threaded rod is installed at the bottom of the screw drive motor, and the threaded rod is inserted downward into the sliding groove and is screwed with the moving block. The rotation of the threaded rod drives the moving block to move up and down. The mounting seat is fixed on the moving block of the support vertical rod. One end of the hydraulic clamp is fixed on the rear moving block and moves up and down synchronously with the rear moving block.

[0009] Preferably, the vision sensor is inclined downward and aligned with the conveyor belt mechanism. The vision sensor moves up and down driven by the screw drive motor and can also move back and forth driven by the machine box drive motor to achieve omnidirectional vision detection.

[0010] Preferably, the hydraulic clamp expands to the left and right sides, driving the track rods to expand to the left and right sides, expanding the clamping distance between the track rods on the left and right sides. The hydraulic clamp closes inward to clamp the engine, and the up and down position of the hydraulic clamp is adjusted by the screw drive motor.

[0011] Preferably, a drive wheel is installed at the transmission end of the sliding block drive motor, and the bottom wheel surface of the drive wheel abuts downward against the top of the track rod. A wheel groove for accommodating the drive wheel is formed at the position of the sliding block close to the drive wheel.

[0012] Preferably, electric telescopic rods are arranged on the opposite sides of the sliding block, and a detection panel is installed at the other end of the electric telescopic rods. A vibration sensor is installed in the inner cavity of the detection panel. An acoustic wave sensor is installed above the inner side surface of the sliding block.

[0013] Compared with the prior art, the beneficial effects of the present invention are: The detection device of this solution has good versatility and can meet the detection requirements of engines of different specifications, being very flexible. In terms of mechanical structure, the screw drive motor at the top of the support vertical rod drives the moving block to move up and down through the threaded rod, enabling the vision detection mechanism and vibration detection mechanism installed on the moving block to adapt to the detection requirements of engine pistons at different heights. For example, for some larger engines, the screw drive motor can control the moving block to rise so that the detection mechanism can accurately detect the piston; while for smaller engines, the position of the moving block can be lowered by the screw drive motor to ensure the accuracy of detection.

[0014] On the other hand, the expandability of the hydraulic fixture in the vibration detection mechanism enables it to adapt to engines of different sizes. When the hydraulic fixture expands to the left and right sides, it drives the track rod to change the clamping distance, and engines of both large and small sizes can be stably clamped and then accurate vibration detection can be carried out. The flexible movement of multiple vibration detection heads on the track rod can detect pistons at different positions, improving the comprehensiveness and accuracy of detection.

[0015] 1) Omnidirectional detection ability: The detection device of this solution includes a vision detection mechanism and a vibration detection mechanism. The vision sensor can detect the appearance defects, dimensional accuracy, etc. of the engine piston, and the vibration detection head can detect the vibration state and internal potential problems of the piston through the vibration sensor and acoustic wave sensor, realizing the omnidirectional detection of the engine piston and improving the accuracy and comprehensiveness of detection.

[0016] 2) High degree of automation: The device realizes the automation of the detection process. Components such as the screw drive motor, case drive motor, and sliding block drive motor can automatically control the movement and detection operations of the detection mechanism without too much manual intervention. In addition, an automatic loading and unloading device can be added to further improve the detection efficiency, reduce the labor intensity and detection cost.

[0017] 3) Good expandability: The structural design of the detection device has a certain degree of flexibility. According to the detection requirements of engine pistons of different specifications, the vision detection mechanism and vibration detection mechanism can be adjusted and expanded accordingly. For example, the number of vibration detection heads can be increased, different types of sensors can be replaced, etc. to adapt to different detection tasks. Description of the Drawings

[0018] Figure 1 is the front view of the present invention; Figure 2 is the side view of the present invention; Figure 3 is the schematic diagram of the vision detection mechanism of the present invention; Figure 4 is the schematic diagram of the vibration detection mechanism of the present invention; Figure 5Schematic diagram of the vibration detection head of the present invention; Figure 6 Schematic diagram of the sliding block drive motor of the present invention.

[0019] In the figure: 10 conveyor belt mechanism, 101 support vertical rod, 102 screw drive motor, 103 moving block, 104 threaded rod; 20 vision detection mechanism, 201 mounting bracket, 202 sliding machine box, 203 machine box drive motor, 204 vision sensor, 205 mounting seat, 206 limit rod; 30 vibration detection mechanism, 301 hydraulic fixture, 302 mounting rod, 303 track rod, 304 vibration detection head; 304-1 sliding block, 304-2 electric telescopic rod, 304-3 detection panel, 304-4 vibration sensor, 304-5 sliding block drive motor, 304-6 drive wheel, 304-7 acoustic wave sensor. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Embodiment

[0022] Please refer to Figures 1-6 , the present invention provides the following technical solutions: An engine piston operating state detection device, including a conveyor belt mechanism 10, a vision detection mechanism 20, and a vibration detection mechanism 30; support vertical rods 101 are installed on both the front and rear sides of the conveyor belt mechanism 10, and the two support vertical rods 101 are arranged in a staggered manner; Visual inspection mechanisms 20 and vibration detection mechanisms 30 are respectively installed on two support vertical rods 101; the visual inspection mechanism 20 is located on the left side of the vibration detection mechanism 30; the two support vertical rods 101 have the same structure, and sliding grooves are provided on the opposite sides of the two support vertical rods 101. A moving block 103 is slidably installed in the sliding groove. A screw driving motor 102 is installed at the top of the support vertical rod 101. A threaded rod 104 is installed at the bottom of the screw driving motor 102, and the threaded rod 104 is inserted downward into the sliding groove and is screwed with the moving block 103. The rotation of the threaded rod 104 drives the moving block 103 to move up and down; The visual inspection mechanism 20 includes a mounting frame 201, a sliding machine box 202, a machine box driving motor 203 and a visual sensor 204; a mounting seat 205 is provided on one side of the mounting frame 201 close to the support vertical rod 101, and the mounting seat 205 is fixed on the moving block 103 of the support vertical rod 101; A track panel is provided at the top of the mounting frame 201, and a limiting rod 206 is provided on the right side of the mounting frame 201. The sliding machine box 202 is provided on the right side of the mounting frame 201, and the sliding machine box 202 is slidably installed on the limiting rod 206; a machine box driving motor 203 is installed at the upper left of the top of the sliding machine box 202. When the machine box driving motor 203 operates, it moves back and forth along the track panel, and the sliding machine box 202 is displaced synchronously with the machine box driving motor 203; A visual sensor 204 is provided at the lower right of the sliding machine box 202, and the visual sensor 204 is inclined downward and aligned with the conveyor belt mechanism 10; the visual sensor 204 moves up and down under the drive of the screw driving motor 102, and at the same time can move back and forth under the drive of the machine box driving motor 203 to realize all-round visual inspection; The vibration detection mechanism 30 includes a hydraulic clamp 301, a mounting rod 302, a track rod 303 and a vibration detection head 304; one end of the hydraulic clamp 301 is fixed on the moving block 103 at the rear side and moves up and down synchronously with the moving block 103 at the rear side; two mounting rods 302 are symmetrically provided on the front side of the hydraulic clamp 301, and track rods 303 are symmetrically installed at the upper and lower ends of the front sides of the two mounting rods 302; The hydraulic clamp 301 expands to the left and right sides, driving the track rods 303 to expand to the left and right sides, expanding the clamping distance between the track rods 303 on the left and right sides. The hydraulic clamp 301 can clamp the engine when it closes inward. The up and down displacement of the hydraulic clamp 301 can be adjusted by the screw driving motor 102 to facilitate corresponding to the piston positions of engines of different specifications; A plurality of vibration detection heads 304 are sleeved on the track rod 303. The vibration detection head 304 includes a sliding block 304-1, a detection panel 304-3 and a sliding block driving motor 304-5. The sliding block 304-1 is slidably sleeved on the track rod 303, and a sliding block driving motor 304-5 is installed at the top of the sliding block 304-1; A driving wheel 304-6 is installed at the transmission end of the sliding block driving motor 304-5, and the bottom wheel surface of the driving wheel 304-6 abuts downward against the top of the track rod 303; a wheel groove for accommodating the driving wheel 304-6 is provided at a position of the sliding block 304-1 close to the driving wheel 304-6; the structure of the machine box driving motor 203 is the same as that of the sliding block driving motor 304-5, and the driving motors all adopt remote control motors; The vibration detection head 304 can change the detection position along the track rod 303 driven by the sliding block driving motor 304-5, which is very flexible; An electric telescopic rod 304-2 is arranged on the opposite side of the sliding block 304-1, and a detection panel 304-3 is installed at the other end of the electric telescopic rod 304-2. A vibration sensor 304-4 is installed in the inner cavity of the detection panel 304-3; an acoustic wave sensor 304-7 is installed above the inner side surface of the sliding block 304-1; Working principle: This solution is a detection device used on the engine production line. All engines are conveyed through the conveyor belt mechanism 10, and after the engine reaches the detection area between the vision detection mechanism 20 and the vibration detection mechanism 30, the engine needs to be started manually before the test can be carried out; Before detection, install the engine on the production line. According to the correct wiring diagram, connect various lines, actuators (such as fuel injectors, ignition coils, etc.) of the engine and the communication interface with the detection device. At the same time, connect the fuel supply system and the intake system, and ensure that the connections are firm and there are no leaks. In addition, the cooling system and the lubrication system also need to be connected to ensure normal cooling and lubrication.

[0023] Turn on the ignition switch, but do not start the engine, and let the ECU perform a self-check. After the self-check is completed, start the engine. If the engine fails to start, it is necessary to check whether there are faults in the ignition system, fuel system, intake system, etc., such as whether the spark plug fires, whether the fuel injector injects fuel, whether the air filter is blocked, etc.

[0024] Support vertical rods 101 are arranged in a staggered manner on both sides of the conveyor belt mechanism 10. The screw driving motors 102 on each support vertical rod 101 are screwed to the moving blocks 103 through threaded rods 104. When the threaded rods 104 rotate, they can drive the moving blocks 103 to move up and down in the sliding grooves, so as to realize the up and down displacement of the components connected to the moving blocks 103.

[0025] Working principle of the vision detection mechanism 20: In the vision detection mechanism 20, the mounting frame 201 is fixed on the moving block 103 of the support vertical rod 101 through the mounting base 205, enabling up and down movement. There is a track panel at the top of the mounting frame 201, and a limiting rod 206 on the right side. The sliding machine box 202 is slidably mounted on the limiting rod 206. The machine box drive motor 203 is mounted on the left side of the top of the sliding machine box 202, which can drive the sliding machine box 202 to move back and forth along the track panel. The vision sensor 204 at the lower right of the sliding machine box 202 is inclined downward and aligned with the conveyor belt mechanism 10. In this way, the vision sensor 204 can not only move up and down driven by the screw drive motor 102, but also move back and forth driven by the machine box drive motor 203, realizing the all-round vision detection of the engine piston.

[0026] The vision sensor 204 can collect images of the engine piston part, obtaining the appearance information of the piston, such as whether there is wear, cracks, scratches on the surface, as well as the dimensional accuracy, shape, etc. of the piston. The collected image data is transmitted to the corresponding processing system, and the image is analyzed and processed through pre-set algorithms and standards. For example, the edge detection algorithm is used to identify the contour of the piston, and by comparing with the standard model, it is judged whether the size of the piston meets the requirements; image recognition technology is adopted to detect the defects on the piston surface, such as parameters like the length and width of the cracks, thereby realizing the detection of the appearance state of the engine piston.

[0027] Working principle of the vibration detection mechanism 30: One end of the hydraulic clamp 301 of the vibration detection mechanism 30 is fixed on the rear moving block 103, and it can move up and down with the moving block 103. Two mounting rods 302 are symmetrically arranged on the front side of the hydraulic clamp 301, and track rods 303 are installed at the upper and lower ends on the front side of the mounting rods 302. The hydraulic clamp 301 can expand to the left and right sides or close inward, driving the track rods 303 to adjust the clamping distance to adapt to the clamping of engines of different specifications. A plurality of vibration detection heads 304 are sleeved on the track rods 303. The sliding block 304-1 is slidably sleeved on the track rod 303. The sliding block drive motor 304-5 at the top contacts the track rod 303 through the drive wheel 304-6, which can drive the sliding block 304-1 to move along the track rod 303, changing the detection position. The electric telescopic rod 304-2 on the opposite side of the sliding block 304-1 is connected to the detection panel 304-3. The electric telescopic rod 304-2 can push the detection panel 304-3 to extend or contract, realizing secondary clamping adjustment; there is a vibration sensor 304-4 in the inner cavity of the detection panel 304-3, and acoustic wave sensors 304-7 are arranged above the inner side. During detection, the detection panel 304-3 is closely attached to the outer wall at the position of the engine piston, and information such as the vibration and sound of the engine piston can be detected.

[0028] The vibration sensor 304-4 on the detection panel 304-3 is used to detect the vibration signal generated during the operation of the engine piston. Meanwhile, the acoustic wave sensor 304-7 above the inner side can detect the acoustic wave signal generated during the piston operation. The obtained vibration and acoustic wave signals are transmitted to the signal processing system, and the signals are processed and analyzed by methods such as spectrum analysis and time-domain analysis. For example, parameters such as the frequency and amplitude of the vibration signal are analyzed to determine whether the operation state of the piston is normal. When there are problems such as piston wear and excessive clearance, its vibration characteristics will change. By comparing with the vibration signal in the normal state, potential faults of the piston can be detected in a timely manner. At the same time, the acoustic wave signal can also provide some information about the piston operation, such as the friction situation between the piston and the cylinder wall, etc., further assisting in judging the operation state of the piston.

[0029] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Engine piston operating state detection device, comprising a conveyor belt mechanism (10), a vision detection mechanism (20) and a vibration detection mechanism (30), characterized in that: Support vertical rods (101) are installed on both the front and rear sides of the conveyor belt mechanism (10), and the two support vertical rods (101) have the same structure and are arranged in a staggered manner; a vision detection mechanism (20) and a vibration detection mechanism (30) are respectively installed on the two support vertical rods (101); The vision detection mechanism (20) includes a mounting frame (201), a sliding machine box (202), a machine box drive motor (203) and a vision sensor (204); a mounting seat (205) is arranged on one side of the mounting frame (201) close to the support vertical rod (101); a track panel is arranged at the top of the mounting frame (201), a limiting rod (206) is arranged on the right side of the mounting frame (201), the sliding machine box (202) is arranged on the right side of the mounting frame (201), and the sliding machine box (202) is slidably installed on the limiting rod (206); A machine box drive motor (203) is installed on the left side of the top of the sliding machine box (202), and when the machine box drive motor (203) operates, it moves back and forth along the track panel, and the sliding machine box (202) is displaced synchronously with the machine box drive motor (203); a vision sensor (204) is arranged at the lower right of the sliding machine box (202), The vibration detection mechanism (30) includes a hydraulic clamp (301), a mounting rod (302), a track rod (303) and a vibration detection head (304); two mounting rods (302) are symmetrically arranged on the front side of the hydraulic clamp (301), and track rods (303) are symmetrically installed at the upper and lower ends of the front sides of the two mounting rods (302); a plurality of vibration detection heads (304) are sleeved on the track rods (303), a sliding block (304-1) is slidably sleeved on the track rod (303), and a sliding block drive motor (304-5) is installed on the top of the sliding block (304-1); the vibration detection head (304) changes the detection position along the track rod (303) driven by the sliding block drive motor (304-5).

2. The engine piston operating state detection device according to claim 1, characterized in that: Sliding grooves are formed on the opposite sides of the two support vertical rods (101), a moving block (103) is slidably installed in the sliding grooves, a screw drive motor (102) is installed at the top of the support vertical rod (101), a threaded rod (104) is installed at the bottom of the screw drive motor (102), and the threaded rod (104) is inserted downward into the sliding groove and is screwed with the moving block (103), and the moving block (103) is driven to move up and down by the rotation of the threaded rod (104); The mounting seat (205) is fixed on the moving block (103) of the support vertical rod (101); one end of the hydraulic clamp (301) is fixed on the rear moving block (103) and moves up and down synchronously with the rear moving block (103).

3. The engine piston operating state detection device according to claim 2, characterized in that: The visual sensor (204) is tilted downward and aligned with the conveyor belt mechanism (10). The visual sensor (204) is displaced up and down driven by the screw drive motor (102), and at the same time, it can be displaced back and forth driven by the machine box drive motor (203) to achieve omnidirectional visual inspection.

4. The engine piston operating state detection device according to claim 1, characterized in that: The hydraulic fixture (301) expands to the left and right sides, driving the track rods (303) to expand to the left and right sides, expanding the clamping distance between the left and right track rods (303). The hydraulic fixture (301) closes inward to clamp the engine, and the up and down position of the hydraulic fixture (301) is adjusted by the screw drive motor (102).

5. The engine piston operating state detection device according to claim 1, characterized in that: A driving wheel (304-6) is installed at the transmission end of the sliding block drive motor (304-5), and the bottom wheel surface of the driving wheel (304-6) abuts downward against the top of the track rod (303); a wheel groove for accommodating the driving wheel (304-6) is provided at a position of the sliding block (304-1) close to the driving wheel (304-6).

6. The engine piston operating state detection device according to claim 5, characterized in that: Electric telescopic rods (304-2) are provided on the opposite sides of the sliding block (304-1), and a detection panel (304-3) is installed at the other end of the electric telescopic rods (304-2). A vibration sensor (304-4) is installed in the inner cavity of the detection panel (304-3); acoustic sensors (304-7) are installed above the inner side surfaces of the sliding block (304-1).

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