Screw in-situ detection device

Abstract

The utility model discloses a screw in-place detection device which comprises a detection frame and a self-detection mechanism. The bottom wall of the detection frame is provided with screw detection limiting seats which are uniformly distributed; the self-detection mechanism comprises an electric-hydraulic push rod, an adjusting shell, a rotating shaft, a mounting rod and a binocular camera, the electric-hydraulic push rod is arranged on the upper side of the detection frame, the adjusting shell is arranged at the telescopic end of the electric-hydraulic push rod, the rotating shaft is rotationally connected between the upper wall and the lower wall of the adjusting shell through a bearing, and the mounting rod is arranged at the lower end of the rotating shaft; according to the screw in-place detection device, through the transmission element and the detection element, by means of the computer vision technology, shape feature recognition and comparison are conducted on a circuit breaker assembly workpiece and a standard circuit breaker assembly workpiece, so that in-place automatic detection is conducted on the screw of the circuit breaker assembly workpiece, and the detection efficiency is improved. The working efficiency is high, and the screw in-place detection is accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breaker assembly, in particular to a screw in-place detection device. Background Art

[0002] A circuit breaker is a switching device that can close, carry and disconnect current under normal circuit conditions and can close, carry and disconnect current under abnormal circuit conditions within a specified time. During the production process of circuit breakers, various components are assembled and fixed together by screws. Therefore, it is usually necessary to perform screw presence detection on the surface of the circuit breaker during the production process. Some screw presence detection devices place the circuit breaker assembly workpiece on the inspection table, and then the staff uses their own eyes to detect the presence of screws on the four outer sides and the top of the circuit breaker assembly workpiece, and then uses a marking pen to mark the position of the circuit breaker assembly workpiece where screws are missing. However, this method uses manual screw presence detection, and there are a large number of screws installed on the surface of the circuit breaker assembly workpiece. The staff is prone to visual fatigue due to long-term eye use, which affects the accuracy of the screw presence detection of the circuit breaker assembly workpiece, and needs to be improved. Utility Model Content

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a screw-in-place detection device. The device uses computer vision technology through transmission elements and detection elements to perform shape feature recognition and comparison between a circuit breaker assembly workpiece and a standard circuit breaker assembly workpiece, thereby automatically detecting the presence of screws in the circuit breaker assembly workpiece. The device has high working efficiency and accurate screw-in-place detection, which can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a screw in-place detection device, comprising a detection frame and a self-detection mechanism;

[0005] Detection frame: Its bottom wall is equipped with evenly distributed screw detection limit seats;

[0006] Self-detection mechanism: It includes an electro-hydraulic push rod, an adjustment shell, a rotating shaft, a mounting rod and a binocular camera. The electro-hydraulic push rod is arranged on the upper side of the detection frame. The telescopic end of the electro-hydraulic push rod is provided with an adjustment shell. The upper and lower walls of the adjustment shell are rotatably connected with a rotating shaft through a bearing. The lower end of the rotating shaft is provided with a mounting rod. The top wall and the lower end of the right wall of the mounting rod are both provided with binocular cameras. The device uses computer vision technology through transmission elements and detection elements to identify and compare the shape features of the circuit breaker assembly workpiece with the standard circuit breaker assembly workpiece, thereby automatically detecting the presence of screws on the circuit breaker assembly workpiece, with high work efficiency and accurate screw presence detection.

[0007] Furthermore, a single-chip microcomputer is provided on the left side of the detection frame, the input end of the single-chip microcomputer is electrically connected to the external power supply, the output end of the single-chip microcomputer is electrically connected to the input end of the electro-hydraulic push rod, and the binocular cameras are both bidirectionally electrically connected to the single-chip microcomputer. Computer vision technology is used to compare the shape feature information of the circuit breaker assembly workpiece and the circuit breaker assembly workpiece with the screws fully installed.

[0008] Furthermore, the self-detection mechanism also includes an angle sensor, which is arranged on the lower side of the adjustment shell. The angle sensor is bidirectionally electrically connected to the single-chip microcomputer. The detection axis of the angle sensor is fixedly connected to the rotating shaft to detect and upload the horizontal rotation angle of the in-place detection part of the circuit breaker assembly workpiece screw.

[0009] Furthermore, the self-detection mechanism also includes a worm wheel, a worm and a drive motor. The worm wheel is arranged on the outside of the rotating shaft. The left and right walls of the adjusting shell are rotatably connected with a worm through a bearing. The worm is meshed with the worm wheel. A drive motor is provided on the left side of the adjusting shell. The input end of the drive motor is electrically connected to the output end of the single-chip microcomputer. The output shaft of the drive motor is fixedly connected to the left end of the worm to adjust the horizontal rotation position of the screw in-place detection part of the circuit breaker assembly workpiece.

[0010] Furthermore, a laser rangefinder is provided on the top wall of the detection frame, the laser rangefinder is bidirectionally electrically connected to the single-chip microcomputer, the laser rangefinder is installed in conjunction with the adjustment shell, and the distance between the laser rangefinder and the adjustment shell is detected and uploaded.

[0011] Furthermore, an alarm is provided on the upper side of the detection frame, and the input end of the alarm is electrically connected to the output end of the single-chip microcomputer to remind the staff that the screws of the circuit breaker assembly workpiece are missing.

[0012] Furthermore, a display screen is provided on the left side of the detection frame, and the input end of the display screen is electrically connected to the output end of the single-chip microcomputer. The single-chip microcomputer takes a screenshot of the image of the side of the circuit breaker assembly workpiece where the screw is missing and transmits it to the display screen in the form of an electrical signal for the staff to see intuitively.

[0013] Compared with the prior art, the beneficial effects of the present invention are: the screw in-place detection device has the following advantages:

[0014] When detecting the screws on the four outer sides and top of the circuit breaker assembly workpiece, the single-chip microcomputer controls the electro-hydraulic push rod and the drive motor to adjust the position of the screw in-place detection part of the device. Then the single-chip microcomputer starts the corresponding binocular camera and uses computer vision technology to automatically detect the presence of screws on the circuit breaker assembly workpiece by identifying and comparing the shape features of the circuit breaker assembly workpiece with the standard circuit breaker assembly workpiece. No staff intervention is required during the detection process, the work efficiency is high, and the screw in-place detection is accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;

[0017] Figure 3 This is an enlarged structural diagram of point A of the present invention.

[0018] In the figure: 1 detection frame, 2 single-chip microcomputer, 3 self-detection mechanism, 31 electro-hydraulic push rod, 32 adjustment shell, 33 rotating shaft, 34 mounting rod, 35 binocular camera, 36 angle sensor, 37 worm gear, 38 worm, 39 drive motor, 4 laser rangefinder, 5 alarm, 6 display screen, 7 screw detection limit seat. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-3 ,This embodiment provides a technical solution: a screw in-place detection device, comprising a detection frame 1 and a self-detection mechanism 3;

[0021] Detection frame 1: Its bottom wall is installed with evenly distributed screw detection limit seats 7, and a single-chip microcomputer 2 is provided on the left side of the detection frame 1. The input end of the single-chip microcomputer 2 is electrically connected to the external power supply, and the output end of the single-chip microcomputer 2 is electrically connected to the input end of the electro-hydraulic push rod 31. The binocular cameras 35 are both bidirectionally electrically connected to the single-chip microcomputer 2. An alarm 5 is provided on the upper side of the detection frame 1, and the input end of the alarm 5 is electrically connected to the output end of the single-chip microcomputer 2. A display screen 6 is provided on the left side of the detection frame 1, and the input end of the display screen 6 is electrically connected to the output end of the single-chip microcomputer 2. First, the circuit breaker assembly workpiece is placed on the detection frame 1, and the screw detection limit seat 7 is used to detect the screw in place and fix it in the position. When the device detects that a screw on a certain side of the circuit breaker assembly workpiece is not in place, the single-chip microcomputer 2 starts the alarm 5 to prompt the staff. At the same time, the single-chip microcomputer 2 takes a screenshot of the image of this side of the circuit breaker assembly workpiece and transmits it to the display screen 6 in the form of an electrical signal for the staff to see intuitively;

[0022] Self-detection mechanism 3: It includes an electro-hydraulic push rod 31, an adjustment shell 32, a rotating shaft 33, a mounting rod 34 and a binocular camera 35. The electro-hydraulic push rod 31 is arranged on the upper side of the detection frame 1. The telescopic end of the electro-hydraulic push rod 31 is provided with an adjustment shell 32. The upper and lower walls of the adjustment shell 32 are rotatably connected with a rotating shaft 33 through a bearing. The lower end of the rotating shaft 33 is provided with a mounting rod 34. The top wall and the lower end of the right wall of the mounting rod 34 are both provided with binocular cameras 35. The self-detection mechanism 3 also includes an angle sensor 36. The angle sensor 36 is arranged on the lower side of the adjustment shell 32. The angle sensor 36 is bidirectionally electrically connected to the single-chip computer 2. The detection shaft of the angle sensor 36 is fixedly connected to the rotating shaft 33. The self-detection mechanism 3 also includes a worm gear 37, a worm 38 and a drive motor 39. The worm gear 37 A worm 38 is arranged on the outside of the rotating shaft 33, and is rotatably connected between the left and right walls of the adjusting shell 32 through a bearing. The worm 38 is meshed with the worm wheel 37. A driving motor 39 is provided on the left side of the adjusting shell 32. The input end of the driving motor 39 is electrically connected to the output end of the single-chip microcomputer 2, and the output shaft of the driving motor 39 is fixedly connected to the left end of the worm 38. A laser rangefinder 4 is provided on the top wall of the detection frame 1. The laser rangefinder 4 is bidirectionally electrically connected to the single-chip microcomputer 2. The laser rangefinder 4 is installed in conjunction with the adjusting shell 32. When the screws on the four sides and the top of the workpiece are detected in place during the assembly of the circuit breaker, the single-chip microcomputer 2 starts the electro-hydraulic push rod 31 so that its telescopic end indirectly drives the screw in-place detection part to move vertically downward through the adjusting shell 32. During this process, the single-chip microcomputer 2 starts the laser rangefinder 4. The laser rangefinder 4 emits a light signal to the upper side of the adjustment housing 32 and reflects it to the initial position. The distance between the adjustment housing 32 and the laser rangefinder 4 is obtained by the propagation time and speed of the light signal. The laser rangefinder 4 transmits the measured result to the single-chip microcomputer 2 in the form of an electrical signal. The single-chip microcomputer 2 controls the electro-hydraulic push rod 31 based on the measured result to extend its telescopic end to a specified length. At this time, the binocular camera 35 on the lower side is located on the right side of the circuit breaker assembly workpiece. The single-chip microcomputer 2 then activates the binocular camera 35 on the lower side to collect an image of the right side of the circuit breaker assembly workpiece and transmits the collected image to the single-chip microcomputer 2 in the form of an electrical signal. The single-chip microcomputer 2 uses computer vision technology to recognize and obtain the shape features in the image and compares it with the circuit breaker assembly workpiece recorded in the single-chip microcomputer 2. The shape features of the fully installed screws on the right side of the circuit breaker assembly workpiece are compared to determine whether the screws on the right side of the circuit breaker assembly workpiece are fully installed in place. The single-chip computer 2 controls the binocular camera 35 on the upper side to detect the screws in place on the upper side of the circuit breaker assembly workpiece through the same principle. Then the single-chip computer 2 starts the drive motor 39 so that its output shaft drives the worm 38 to rotate. The worm 38 is engaged so that the worm wheel 37 drives the screw in place detection part of the device to rotate horizontally through the rotating shaft 33. During this process, the single-chip computer 2 starts the angle sensor 36. The angle sensor 36 adopts a high-performance integrated magnetic sensitive element and uses the non-contact characteristics of magnetic signal induction to measure the rotation angle of the detection shaft and transmits the measurement result to the single-chip computer 2 in the form of an electrical signal.Based on the measurement results, the single-chip microcomputer 2 controls the drive motor 39 to rotate the shaft 33 90 degrees each time. After each 90-degree rotation of the shaft 33, the single-chip microcomputer 2 uses the same principle to detect the presence of screws on the side of the circuit breaker assembly workpiece through the binocular camera 35 on the lower side. The device can automatically detect the presence of screws on the sides and top of the circuit breaker assembly workpiece, which is convenient to use and has high detection efficiency. The single-chip microcomputer 2 controls the drive motor 39 to rotate the shaft 33 in the same direction no more than 360 degrees, thereby avoiding winding. The device uses computer vision technology through transmission elements and detection elements to automatically detect the presence of screws on the circuit breaker assembly workpiece by identifying and comparing the shape features of the circuit breaker assembly workpiece with standard circuit breaker assembly workpieces. This achieves high work efficiency and accurate screw presence detection.

[0023] The working principle of a screw in-position detection device provided by the utility model is as follows: when the screws on the four sides and the top of the workpiece are detected during the circuit breaker assembly process, the circuit breaker assembly workpiece is first placed on the detection frame 1 and fixed at the screw in-position detection position by the screw detection limit seat 7. Then, the single-chip microcomputer 2 starts the electro-hydraulic push rod 31 so that its telescopic end indirectly drives the screw in-position detection part to move vertically downward through the adjustment shell 32. During this process, the single-chip microcomputer 2 starts the laser rangefinder 4, which emits a light signal to illuminate the upper side of the adjustment shell 32 and reflects it to the initial position. The distance between the adjustment shell 32 and the laser rangefinder 4 is obtained by the propagation time and speed of the light signal. The laser rangefinder 4 The measured result is transmitted to the single-chip computer 2 in the form of an electrical signal. The single-chip computer 2 controls the electro-hydraulic push rod 31 according to the measured result so that its telescopic end extends to a specified length. At this time, the binocular camera 35 on the lower side is located on the right side of the circuit breaker assembly workpiece. Subsequently, the single-chip computer 2 starts the binocular camera 35 on the lower side to collect images of the right side of the circuit breaker assembly workpiece, and transmits the collected images to the single-chip computer 2 in the form of an electrical signal. The single-chip computer 2 uses computer vision technology to identify and obtain shape features in the image, and compares the image with the shape features of the fully installed screws on the right side of the circuit breaker assembly workpiece recorded in the single-chip computer 2, thereby determining whether the screws on the right side of the circuit breaker assembly workpiece are fully installed in place. The single-chip computer 2 controls the image. The binocular camera 35 on the upper side of the system performs screw in-place detection on the upper side of the circuit breaker assembly workpiece using the same principle. Subsequently, the single-chip microcomputer 2 starts the drive motor 39 so that its output shaft drives the worm 38 to rotate. The worm 38 is engaged so that the worm wheel 37 drives the screw in-place detection part of the device to rotate horizontally through the rotating shaft 33. During this process, the single-chip microcomputer 2 starts the angle sensor 36. The angle sensor 36 adopts a high-performance integrated magnetic sensitive element and uses the non-contact characteristics of magnetic signal induction to measure the rotation angle of the detection shaft and transmits the measurement result to the single-chip microcomputer 2 in the form of an electrical signal. The single-chip microcomputer 2 controls the drive motor 39 according to the measurement result so that the rotating shaft 33 rotates 90 degrees each time. The rotating shaft 33 After each rotation of 90 degrees, the single-chip microcomputer 2 uses the binocular camera 35 on the lower side to detect the presence of the screws on the side of the circuit breaker assembly workpiece through the same principle. The device can automatically detect the presence of screws on the four sides and top of the circuit breaker assembly workpiece. It is easy to use and has high detection efficiency. The single-chip microcomputer 2 controls the drive motor 39 to make the rotating shaft 33 rotate in the same direction no more than 360 degrees, thereby avoiding winding. When the device detects that a screw on a certain side of the circuit breaker assembly workpiece is not in place, the single-chip microcomputer 2 activates the alarm 5 to prompt the staff. At the same time, the single-chip microcomputer 2 takes a screenshot of the image of this side of the circuit breaker assembly workpiece and transmits it to the display screen 6 in the form of an electrical signal for the staff to see intuitively.

[0024] It is worth noting that the single-chip microcomputer 2 disclosed in the above embodiment can adopt MCS-51, the electro-hydraulic push rod 31 can adopt DYTZ-1000, the binocular camera 35 can adopt N1330, the angle sensor 36 can adopt HSM22M multi-turn non-contact magnetic potentiometer, the drive motor 39 can adopt D140TYD, the laser rangefinder 4 can adopt WH-LRF laser rangefinder, the alarm 5 can adopt BC-809C, and the display screen 6 can adopt JBH686N002. The single-chip microcomputer 2 controls the electro-hydraulic push rod 31, the binocular camera 35, the angle sensor 36, the drive motor 39, the laser rangefinder 4, the alarm 5 and the display screen 6, all of which adopt the methods commonly used in the prior art.

[0025] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A screw in-place detection device, characterized in that: It includes a detection frame (1) and a self-detection mechanism (3); Detection frame (1): The bottom wall of the detection frame is provided with evenly distributed screw detection limit seats (7); The self-detection mechanism (3) comprises an electro-hydraulic push rod (31), an adjustment shell (32), a rotating shaft (33), a mounting rod (34) and a binocular camera (35), wherein the electro-hydraulic push rod (31) is arranged on the upper side of the detection frame (1), the telescopic end of the electro-hydraulic push rod (31) is provided with an adjustment shell (32), the upper and lower walls of the adjustment shell (32) are rotatably connected with a rotating shaft (33) through a bearing, the lower end of the rotating shaft (33) is provided with a mounting rod (34), and the top wall and the lower end of the right wall of the mounting rod (34) are both provided with binocular cameras (35).

2. The screw in-place detection device according to claim 1, characterized in that: A single-chip microcomputer (2) is provided on the left side of the detection frame (1); an input end of the single-chip microcomputer (2) is electrically connected to an external power supply; an output end of the single-chip microcomputer (2) is electrically connected to an input end of an electro-hydraulic push rod (31); and a binocular camera (35) is bidirectionally electrically connected to the single-chip microcomputer (2).

3. The screw in-place detection device according to claim 2, characterized in that: The self-detection mechanism (3) further comprises an angle sensor (36), the angle sensor (36) being arranged on the lower side of the adjustment housing (32), the angle sensor (36) being bidirectionally electrically connected to the single-chip microcomputer (2), and the detection shaft of the angle sensor (36) being fixedly connected to the rotating shaft (33).

4. The screw in-place detection device according to claim 2, characterized in that: The self-detection mechanism (3) further comprises a worm wheel (37), a worm (38) and a drive motor (39), wherein the worm wheel (37) is arranged on the outside of the rotating shaft (33), and the worm (38) is rotatably connected between the left and right walls of the adjustment housing (32) via a bearing, and the worm (38) is meshedly connected with the worm wheel (37), and a drive motor (39) is provided on the left side of the adjustment housing (32), wherein the input end of the drive motor (39) is electrically connected to the output end of the single chip microcomputer (2), and the output shaft of the drive motor (39) is fixedly connected to the left end of the worm (38).

5. The screw in-place detection device according to claim 2, characterized in that: A laser rangefinder (4) is provided on the top wall of the detection frame (1). The laser rangefinder (4) is bidirectionally electrically connected to the single-chip microcomputer (2). The laser rangefinder (4) is mounted in conjunction with the adjustment housing (32).

6. The screw in-place detection device according to claim 2, characterized in that: An alarm (5) is provided on the upper side of the detection frame (1), and an input end of the alarm (5) is electrically connected to an output end of the single chip computer (2).

7. The screw in-place detection device according to claim 2, characterized in that: A display screen (6) is provided on the left side of the detection frame (1), and an input end of the display screen (6) is electrically connected to an output end of the single-chip computer (2).

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