Engine piston operating condition detection device

Abstract

The application belongs to the technical field of engine detection devices, and specifically discloses an engine piston running state detection device, which comprises a conveying belt mechanism, a visual detection mechanism and a vibration detection mechanism; support vertical poles are installed on the front and back sides of the conveying belt mechanism; the two support vertical poles are the same in structure and are arranged in a staggered mode; the visual detection mechanism and the vibration detection mechanism are respectively installed on the two support vertical poles; 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 has good universality, can meet the detection work of engines of different specifications, and is very flexible; the expandability of the hydraulic clamp in the vibration detection mechanism can adapt to engines of different sizes; the flexible movement of the multiple vibration detection heads on the track rod can detect pistons at different positions, and the comprehensiveness and accuracy of the detection are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engine detection devices, in particular to an engine piston operation state detection device. BACKGROUND

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

[0003] The traditional detection method mainly relies on manual detection, which is low in detection efficiency and easy to be affected by human factors, and it is difficult to realize the full-range and high-precision detection of the engine piston.

[0004] In addition, the existing detection device also has defects in mechanical structure and automation degree, and has poor adaptability to different specifications of engines, and cannot realize mixed detection of different specifications of engines. Each time the detection production line is modified, it is extremely time-consuming and laborious, increases the labor intensity and detection cost, and it is difficult to realize rapid and continuous detection of the engine.

[0005] Based on the above reasons, we propose an engine piston operation state detection device. SUMMARY

[0006] The purpose of the present application is to provide an engine piston operation state detection device to solve the problems raised in the background.

[0007] To achieve the above purpose, the present application provides the following technical scheme: an engine piston operation state detection device, comprising a conveying belt mechanism, a visual detection mechanism and a vibration detection mechanism;

[0008] The conveying belt mechanism is provided with a support vertical rod on the front and rear sides, the two support vertical rods are the same in structure and are arranged in a staggered manner, the visual detection mechanism and the vibration detection mechanism are respectively installed on the two support vertical rods, and the visual detection mechanism is located on the left side of the vibration detection mechanism.

[0009] The visual detection mechanism comprises a mounting bracket, a sliding machine box, a machine box driving motor and a visual sensor, the side close to the support vertical rod of the mounting bracket is provided with a mounting seat, the top of the mounting bracket is provided with a track panel, the right side of the mounting bracket is provided with a limiting rod, the sliding machine box is arranged on the right side of the mounting bracket and is slidingly installed on the limiting rod.

[0010] The top left side of the sliding machine box is provided with a machine box driving motor, the machine box driving motor moves forward and backward along the track panel when operating, and the sliding machine box synchronously displaces with the machine box driving motor; the right lower side of the sliding machine box is provided with a visual sensor,

[0011] The vibration detection mechanism comprises 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 arranged on the upper and lower ends of the front side of the two mounting rods; a plurality of vibration detection heads are sleeved on the track rods, the vibration detection head comprises a sliding block, a detection panel and a sliding block driving motor, the sliding block is sleeved on the track rod in a sliding mode, and the sliding block driving motor is arranged on the top of the sliding block; the vibration detection head changes the detection position along the track rod under the driving of the sliding block driving motor.

[0012] The opposite side of the sliding block is provided with an electric telescopic rod, the other end of the electric telescopic rod is provided with a detection panel, and a vibration sensor is arranged in the inner cavity of the detection panel; a sound wave sensor is arranged above the inner side of the sliding block, and the driving motor is a remote control motor.

[0013] Preferably, sliding grooves are arranged on the opposite sides of the two support vertical rods, a moving block is slidably arranged in the sliding groove, a screw rod driving motor is arranged on the top of the support vertical rod, a threaded rod is arranged at the bottom of the screw rod driving motor, the threaded rod is downwardly inserted into the sliding groove and is screwed with the moving block, and the threaded rod drives the moving block to move up and down through rotation;

[0014] The mounting seat is fixed on the moving block of the support vertical rod; one end of the hydraulic clamp is fixed on the moving block at the rear side and moves up and down synchronously with the moving block at the rear side.

[0015] Preferably, the visual sensor is inclined downwardly and aligned with the conveying belt mechanism, the visual sensor moves up and down under the driving of the screw rod driving motor and moves forward and backward under the driving of the motor box driving motor, and the visual sensor realizes omnibearing visual detection.

[0016] Preferably, the hydraulic clamp expands to the left and right sides, drives the track rods to expand to the left and right sides, expands the clamping interval of the track rods on the left and right sides, clamps the engine by folding the hydraulic clamp inwardly, and adjusts the up-down position of the hydraulic clamp through the screw rod driving motor.

[0017] Preferably, the transmission end of the sliding block driving motor is provided with a driving wheel, and the bottom wheel surface of the driving wheel downwardly abuts against the top of the track rod; a wheel groove for accommodating the driving wheel is arranged at the position close to the driving wheel of the sliding block.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] The detection device of the scheme has good universality and can meet the detection work of engines of different specifications and is very flexible. In the mechanical structure, the screw rod driving motor at the top of the supporting vertical rod drives the displacement of the moving block up and down through the threaded rod, so that the visual detection mechanism and the vibration detection mechanism installed on the moving block can adapt to the detection needs of engines of different heights. For example, for some larger engines, the screw rod driving motor can control the moving block to rise, so that the detection mechanism can accurately detect the piston; and for smaller engines, the position of the moving block can be lowered through the screw rod driving motor to ensure the accuracy of the detection.

[0020] On the other hand, the expandability of the hydraulic clamp in the vibration detection mechanism enables it to adapt to engines of different sizes. When the hydraulic clamp expands to the left and right sides, it drives the track rod to change the clamping distance, so that engines of large or small sizes can be stably clamped and accurately detected. The flexible movement of multiple vibration detection heads on the track rod can detect pistons at different positions, improving the comprehensiveness and accuracy of the detection.

[0021] 1) Comprehensive detection capability: The detection device of the scheme includes a visual detection mechanism and a vibration detection mechanism. The visual sensor can detect the appearance defects and dimensional accuracy 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 the sound wave sensor, realizing comprehensive detection of the engine piston and improving the accuracy and comprehensiveness of the detection.

[0022] 2) High degree of automation: The device realizes the automation of the detection process, and the screw rod driving motor, the box driving motor, the sliding block driving motor and other components can automatically control the movement and detection operation of the detection mechanism, without the need for excessive manual intervention. In addition, an automatic feeding and discharging device can be added to further improve the detection efficiency, reduce labor intensity and detection cost.

[0023] 3) Good expansibility: The structural design of the detection device has a certain flexibility, and the visual detection mechanism and the vibration detection mechanism can be adjusted and expanded accordingly according to the detection needs of engine pistons of different specifications, such as increasing the number of vibration detection heads, replacing different types of sensors, etc., to adapt to different detection tasks. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a front view of the present invention;

[0025] Figure 2 is a side view of the present invention;

[0026] Figure 3 is a schematic view of the visual detection mechanism of the present invention;

[0027] Figure 4It is a schematic diagram of the vibration detection mechanism of the present application.

[0028] Figure 5 It is a schematic diagram of the vibration detection head of the present application.

[0029] Figure 6 It is a schematic diagram of the sliding block drive horse of the present application.

[0030] In the figure: 10 conveying belt mechanism, 101 supporting vertical rod, 102 screw drive motor, 103 moving block, 104 threaded rod;

[0031] 20 visual detection mechanism, 201 mounting frame, 202 sliding machine box, 203 machine box drive motor, 204 visual sensor, 205 mounting seat, 206 limiting rod;

[0032] 30 vibration detection mechanism, 301 hydraulic clamp, 302 mounting rod, 303 track rod, 304 vibration detection head;

[0033] 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 sensor. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0035] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. EMBODIMENT

[0036] Please refer to Figures 1-6 The present application provides the following technical solutions:

[0037] The engine piston running state detection device comprises a conveying belt mechanism 10, a visual detection mechanism 20 and a vibration detection mechanism 30. The conveying belt mechanism 10 is provided with supporting vertical rods 101 on both sides, and the two supporting vertical rods 101 are arranged in a staggered manner.

[0038] Two support vertical poles 101 are respectively provided with a visual detection mechanism 20 and a vibration detection mechanism 30; the visual detection mechanism 20 is located at the left side of the vibration detection mechanism 30; the two support vertical poles 101 are the same in structure, and sliding grooves are formed in the opposite sides of the two support vertical poles 101; a moving block 103 is slidably installed in the sliding groove; a screw rod driving motor 102 is installed at the top of the support vertical pole 101; a threaded rod 104 is installed at the bottom of the screw rod driving motor 102; the threaded rod 104 is downwardly inserted into the sliding groove and is screwed with the moving block 103; the threaded rod 104 drives the moving block 103 to move up and down;

[0039] The visual detection mechanism 20 comprises 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 arranged on the side of the mounting frame 201 close to the support vertical pole 101; the mounting seat 205 is fixed on the moving block 103 of the support vertical pole 101;

[0040] An orbit panel is arranged at the top of the mounting frame 201; a limiting rod 206 is arranged at the right side of the mounting frame 201; the sliding machine box 202 is arranged at the right side of the mounting frame 201 and is slidably installed on the limiting rod 206; the machine box driving motor 203 is installed at the top left side of the sliding machine box 202; the machine box driving motor 203 moves forward and backward along the orbit panel during operation; the sliding machine box 202 moves synchronously with the machine box driving motor 203;

[0041] The visual sensor 204 is arranged at the right lower side of the sliding machine box 202 and is inclined downwardly and aligned with the conveying belt mechanism 10; the visual sensor 204 moves up and down under the driving of the screw rod driving motor 102 and moves forward and backward under the driving of the machine box driving motor 203, thereby realizing omnibearing visual detection;

[0042] The vibration detection mechanism 30 comprises a hydraulic clamp 301, a mounting rod 302, an orbit 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 arranged at the front side of the hydraulic clamp 301; the orbit rods 303 are symmetrically installed at the upper and lower ends of the front sides of the two mounting rods 302;

[0043] The hydraulic clamp 301 expands to the left and right sides, drives the orbit rods 303 to expand to the left and right sides, expands the clamping interval of the orbit rods 303 at the left and right sides, and the hydraulic clamp 301 can clamp the engine by being folded inwardly; the up and down displacement of the hydraulic clamp 301 can be adjusted by the screw rod driving motor 102, so as to correspond to the piston position of the engine of different specifications;

[0044] A plurality of vibration detection heads 304 are sleeved on the track rod 303, and the vibration detection head 304 comprises a sliding block 304-1, a detection panel 304-3 and a sliding block driving motor 304-5, the sliding block 304-1 is sleeved on the track rod 303, and the top of the sliding block 304-1 is provided with the sliding block driving motor 304-5;

[0045] The transmission end of the sliding block driving motor 304-5 is provided with a driving wheel 304-6, and the bottom of the driving wheel 304-6 is downwardly abutted against the top of the track rod 303; the position of the sliding block 304-1 close to the driving wheel 304-6 is provided with a wheel groove for accommodating the driving wheel 304-6; the machine box driving motor 203 is the same as the sliding block driving motor 304-5, and the driving motors are all remote control motors;

[0046] The vibration detection head 304 can change the detection position along the track rod 303 under the driving of the sliding block driving motor 304-5, and is very flexible;

[0047] The opposite side of the sliding block 304-1 is provided with an electric telescopic rod 304-2, and the other end of the electric telescopic rod 304-2 is provided with the detection panel 304-3, and the inner cavity of the detection panel 304-3 is provided with a vibration sensor 304-4; the inner side of the sliding block 304-1 is provided with a sound wave sensor 304-7 above;

[0048] Working principle:

[0049] The scheme is a detection device used on an engine production line, all engines are conveyed through a conveying belt mechanism 10, and the engine is manually started after reaching a detection area between a visual detection mechanism 20 and a vibration detection mechanism 30, and then the test can be performed;

[0050] Before detection, the engine is installed on the assembly line, various lines of the engine are connected according to the correct wiring diagram, actuators (such as fuel injectors, ignition coils, etc.) and communication interfaces with the detection device, and the fuel supply system and the air intake system are connected, and it is ensured that the connection is firm and leak-free. In addition, the cooling system and the lubricating system are also connected to ensure normal cooling and lubrication.

[0051] The ignition switch is turned on, but the engine is not started, and the ECU is self-checked. After the self-checking is completed, the engine is started. If the engine cannot be started, it is necessary to check whether the ignition system, the fuel system, the air intake system and the like have faults, such as whether the spark plug sparks, whether the fuel injector sprays oil, whether the air filter is blocked and the like.

[0052] The support vertical rods 101 are arranged on both sides of the conveying belt mechanism 10 in staggered manner, and the screw rod driving motor 102 on each support vertical rod 101 is screwed with the moving block 103 through the threaded rod 104, the threaded rod 104 can drive the moving block 103 to move up and down in the sliding groove, so as to realize the up and down displacement of the components connected with the moving block 103.

[0053] The working principle of the visual detection mechanism 20 is as follows: in the visual detection mechanism 20, the mounting frame 201 is fixed on the moving block 103 of the support vertical rod 101 through the mounting seat 205, and can realize up and down movement. The mounting frame 201 has a track panel on the top and a limiting rod 206 on the right side, and the sliding machine box 202 is slidingly installed on the limiting rod 206. The machine box driving motor 203 is installed on the top left side of the sliding machine box 202, and can drive the sliding machine box 202 to move forward and backward along the track panel. The visual sensor 204 on the right lower side of the sliding machine box 202 is inclined downward and aligned with the conveying belt mechanism 10, so that the visual sensor 204 can not only displace up and down under the driving of the screw rod driving motor 102, but also can displace forward and backward under the driving of the machine box driving motor 203, so as to realize the visual detection of the engine piston in all directions.

[0054] The visual sensor 204 can collect images of the engine piston part and obtain appearance information of the piston, such as whether the surface has wear, crack, scratch, and size precision, shape, etc. of the piston. The collected image data is transmitted to the corresponding processing system, and the image is analyzed and processed through the pre-set algorithm and standard. For example, the edge detection algorithm is used to identify the contour of the piston, and the size of the piston is judged whether it meets the requirements by comparing with the standard model; the image recognition technology is used to detect the defects on the surface of the piston, such as the length, width and other parameters of the crack, so as to realize the detection of the appearance state of the engine piston.

[0055] The working principle of the vibration detection mechanism 30 is as follows: one end of the hydraulic clamp 301 of the vibration detection mechanism 30 is fixed on the rear moving block 103 and can displace 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 arranged on the upper and lower ends of the front side of the mounting rods 302. The hydraulic clamp 301 can expand to the left and right sides or contract 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 sleeved on the track rod 303, the sliding block drive motor 304-5 at the top is in contact with the track rod 303 through the driving wheel 304-6, and the sliding block 304-1 can be driven to move along the track rod 303 to change the detection position. The electric telescopic rod 304-2 on the opposite side of the sliding block 304-1 is connected with the detection panel 304-3, and the electric telescopic rod 304-2 can push the detection panel 304-3 to extend or contract to realize secondary clamping adjustment; the vibration sensor 304-4 is arranged in the inner cavity of the detection panel 304-3, and the sound wave sensor 304-7 is arranged on the inner side face above. When detecting, the detection panel 304-3 is tightly attached to the outer wall of the engine piston position, and the vibration and sound information of the engine piston can be detected.

[0056] The vibration sensor 304-4 on the detection panel 304-3 is used for detecting the vibration signal generated when the engine piston operates, and the sound wave sensor 304-7 on the inner side face above can detect the sound wave signal generated when the piston operates. The obtained vibration and sound wave signals are transmitted to the signal processing system, and the signals are processed and analyzed by methods such as frequency spectrum analysis and time domain analysis. For example, the frequency, amplitude and other parameters of the vibration signal are analyzed to determine whether the running state of the piston is normal. When the piston has problems such as wear and excessive gap, the vibration characteristics will change, and by comparing with the vibration signal in the normal state, the potential failure of the piston can be found in time. At the same time, the sound wave signal can also provide some information about the piston operation, such as the friction between the piston and the cylinder wall, to further assist in judging the running state of the piston.

[0057] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application, and any reference signs in the claims should not be regarded as limiting the claims.

[0058] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. An engine piston operating status detection device, comprising a conveyor belt mechanism (10), a vision inspection mechanism (20), and a vibration detection mechanism (30), characterized in that: The conveyor belt mechanism (10) is equipped with support poles (101) on both the front and rear sides. The two support poles (101) have the same structure and are staggered. A visual inspection mechanism (20) and a vibration inspection mechanism (30) are respectively installed on the two support poles (101). The visual inspection mechanism (20) includes a mounting frame (201), a sliding housing (202), a housing drive motor (203), and a visual sensor (204); a mounting base (205) is provided on the side of the mounting frame (201) near the support pole (101); a track panel is provided on the top of the mounting frame (201), a limit rod (206) is provided on the right side of the mounting frame (201), the sliding housing (202) is located on the right side of the mounting frame (201), and the sliding housing (202) is slidably mounted on the limit rod (206); A box drive motor (203) is installed on the top left side of the sliding box (202). When the box drive motor (203) runs, it moves back and forth along the track panel, and the sliding box (202) and the box drive motor (203) move synchronously. A vision sensor (204) is provided on the lower right side of the sliding box (202). The vibration detection mechanism (30) includes a hydraulic clamp (301), mounting rods (302), track rods (303), and vibration detection heads (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 both the upper and lower ends of the front side of the two mounting rods (302). Multiple vibration detection heads (304) are sleeved on the track rods (303), and sliding blocks (304-1) are slidably sleeved on the track rods (303). A sliding block drive motor (304-1) is installed on the top of the sliding block (304-1). 4-5); The vibration detection head (304) changes its detection position along the track rod (303) under the drive of the sliding block drive motor (304-5); An electric telescopic rod (304-2) is provided 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); A sound wave sensor (304-7) is installed on the upper side of the inner side of the sliding block (304-1), and the drive motor is a remote control motor.

2. The engine piston operating status detection device according to claim 1, characterized in that: Sliding grooves are provided on opposite sides of the two support columns (101), and a moving block (103) is slidably installed in the sliding groove. A screw drive motor (102) is installed on the top of the support column (101), and a threaded rod (104) is installed on the bottom of the screw drive motor (102). The threaded rod (104) is inserted downward into the sliding groove and screwed to the moving block (103). The rotation of the threaded rod (104) drives the moving block (103) to move up and down. The mounting base (205) is fixed on the moving block (103) of the support pole (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 status detection device according to claim 2, characterized in that: The vision sensor (204) is tilted downwards and aligned with the conveyor belt mechanism (10). The vision sensor (204) moves up and down under the drive of the screw drive motor (102), and at the same time it can move back and forth under the drive of the machine box drive motor (203) to achieve all-round vision detection.

4. The engine piston operating status detection device according to claim 1, characterized in that: The hydraulic clamp (301) extends to the left and right sides, driving the track rod (303) to extend to the left and right sides, increasing the clamping distance between the left and right track rods (303). The hydraulic clamp (301) closes inward to clamp the engine. The screw drive motor (102) adjusts the up and down position of the hydraulic clamp (301).

5. The engine piston operating status detection device according to claim 1, characterized in that: The drive end of the sliding block drive motor (304-5) is equipped with a drive wheel (304-6), and the bottom wheel surface of the drive wheel (304-6) abuts against the top of the track rod (303) with the bottom wheel surface facing downward; the sliding block (304-1) has a wheel groove for accommodating the drive wheel (304-6) near the drive wheel (304-6).

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