Device for detecting quality of elevator balance compensation chain with steel balls based on machine vision

Abstract

The invention belongs to the technical field of compensation chain detection, and particularly relates to a machine vision-based strip steel ball elevator balance compensation chain quality detection device, which comprises a machine table and a control computer arranged on one side of the machine table, and further comprises a support side plate fixed on the end surface of the machine table, and a left side plate fixed on the side wall of the support side plate, a movable side plate slidably connected with the supporting side plate is arranged on one side of the left side plate, and multiple sets of wheel plates are fixed to the side walls of the opposite sides of the left side plate and the movable side plate. The method can improve the effective shooting coverage of the camera in the width direction of the compensation chain, avoids the waste of hardware resources, prolongs the detection path in the same machine space, greatly improves the overall detection efficiency, reduces the space occupation of equipment, also can eliminate the interference of external pipelines on image shooting, and improves the detection efficiency. Concealed defects such as micro cracks of the compensation chain are exposed, the capacity of capturing the hidden defects is remarkably improved, and the probability of missed detection is reduced.

Description

Technical Field

[0001] This invention belongs to the field of compensation chain detection technology, and in particular relates to a machine vision-based quality detection device for a steel ball elevator balance compensation chain. Background Technology

[0002] The steel ball elevator balance compensation chain is a key component of the elevator operating system. It embeds steel balls in the elastic base layer, which can dynamically balance the weight difference between the car and the counterweight side caused by the change in the length of the steel wire rope, reduce motor load fluctuations, improve the smoothness and quietness of elevator operation, enhance the strength of the base structure, extend the service life of the compensation chain, and ensure the efficient and safe operation of the elevator.

[0003] Currently, the steel ball compensation chain has increased process complexity due to the embedded steel balls in the base layer, which increases the possibility of defects such as cracks in the base layer. Therefore, when inspecting the quality of elevator compensation chains, it is necessary to detect defects such as cracks on the surface of the base layer. For example, the automatic quality inspection device and method for elevator balance compensation chains based on machine vision disclosed in patent publication number CN104764750B uses a multi-station industrial camera to perform visual quality inspection on the compensation chain.

[0004] However, when industrial cameras capture images of the compensation chain, the structural characteristics of the compensation chain itself mean that it needs to continuously cover the detection along the length direction, but the width direction is relatively narrow (usually only 20-40mm), resulting in a large amount of the camera's field of view being idle. The effective imaging width of the camera is much larger than the width of the compensation chain, and only a small part of the field of view is used to capture effective information of the compensation chain, while the rest of the area is an invalid background, which wastes the camera's hardware resources and results in low detection efficiency. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a machine vision-based quality inspection device for the balance compensation chain of an elevator with steel balls.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a machine vision-based quality inspection device for a steel ball-equipped elevator balance compensation chain, comprising a machine base and a control computer mounted on one side of the machine base, and further comprising:

[0007] A support side plate is fixed to the end face of the machine tool. A left side plate is fixed to the side wall of the support side plate, and a movable side plate is provided on one side of the left side plate that is slidably connected to the support side plate. Multiple sets of wheel plates are fixed to the side walls of the opposite side of the left side plate and the movable side plate, and a directional wheel is rotatably connected between two wheel plates in the same set.

[0008] A guide unit is installed on the side wall of the left side plate and the movable side plate. The guide unit guides the compensation chain to pass around each directional wheel in sequence to form a spiral shape.

[0009] The outer horizontal shooting component, the inner horizontal shooting component, and the lateral shooting component are all fixed to the side wall of the supporting side plate by a mounting bracket. The inner horizontal shooting component is located between the left side plate and the movable side plate, and the outer horizontal shooting component is located above the inner horizontal shooting component. The lateral shooting component is located on the side of the movable side plate away from the left side plate.

[0010] A pressure unit is installed between the movable side plate and the left side plate, and the pressure unit is used to apply pressure to the movable side plate away from the left side plate.

[0011] Preferably, the guide unit includes a threaded sleeve disposed on one side of the directional wheel, and two threaded sleeves in the same group correspond to the upper and lower wheel wall positions of the directional wheel on the same side, respectively. The side walls of the left side plate and the movable side plate are threadedly connected to the threaded sleeves on the same side. A U-shaped block is sleeved on the outside of the threaded sleeves located on the lower side of the left side plate and the movable side plate, and a reversing guide tube is fixedly inserted into the side wall of the U-shaped block.

[0012] Preferably, the reversing guide tube includes a straight section and a reversing section, the straight section is coaxial with the same-side wire threading sleeve, and the reversing section of the reversing guide tube on the left side plate is coaxial with the reversing section of the corresponding reversing guide tube on the movable side plate.

[0013] Preferably, the top-pressing unit includes a mounting plate fixedly installed on the side wall of the support side plate. Two electric push rods are fixedly inserted into the side wall of the mounting plate. The movable ends of the two electric push rods are located on the side of the mounting plate near the movable side plate, and the movable ends of the two electric push rods are equipped with top-pressing blocks. The electric push rods are electrically connected to the control computer.

[0014] Preferably, a pressure detector is fixedly installed on the side wall of the top pressure block near the movable side plate, and a pressure measuring block is fixed to the measuring end of the pressure detector. The pressure detector is electrically connected to the control computer.

[0015] Preferably, a light-shielding sleeve is fixedly installed on the side wall of the supporting side plate. The left side plate, the movable side plate, the outer horizontal shooting component, the inner horizontal shooting component, and the side shooting component are all arranged inside the light-shielding sleeve. A light-shielding cover is hinged to the end of the light-shielding sleeve away from the supporting side plate. Detection ports are opened on the two opposite side walls of the light-shielding sleeve. The compensation chain enters the light-shielding sleeve from one detection port, passes through the guide unit in sequence around each directional wheel, and exits from the detection port on the other side. The light-shielding sleeve is equipped with an elastic support unit for supporting the movable side plate.

[0016] Preferably, the elastic support unit includes multiple magnetic shielding cylinders fixedly installed on the inner side wall of the light-shielding sleeve. The ends of the magnetic shielding cylinders are slidably connected to movable rods, and the ends of the movable rods away from the magnetic shielding cylinders are fixedly connected to movable side plates. The ends of the movable rods are fixedly provided with magnetic shielding blocks that are slidably disposed inside the magnetic shielding cylinders, and a support spring is fixed between the magnetic shielding blocks and the magnetic shielding cylinders.

[0017] Preferably, an electromagnetic block electrically connected to a control computer is fixed at the end of the magnetic shielding cylinder away from the movable rod, and an iron core is fixed at the end of the magnetic shielding block near the electromagnetic block.

[0018] Compared with existing technologies, the advantages of the machine vision-based quality inspection device for the balance compensation chain of an elevator with steel balls are:

[0019] 1. Through the coordinated operation of the set-up machine, control computer, support side plate, movable side plate, wheel plate, directional wheel, and guide unit, the elevator compensation chain can form a spiral movement path. This increases the effective shooting coverage of the camera in the width direction of the compensation chain. When transporting in a single straight line, the idle field of view of the camera in the width direction can be simultaneously captured in the width area of ​​the compensation chain on adjacent layers after the spiral arrangement, so that the camera's imaging field of view is highly matched with the width requirement of the compensation chain, avoiding waste of hardware resources. At the same time, the spiral path extends the detection path of the compensation chain within the same machine space, increasing the detection length per unit time without increasing the conveying speed, which greatly improves the overall detection efficiency. In addition, with the set-up external horizontal shooting component, internal horizontal shooting component, and lateral shooting component, images of the compensation chain can be captured in two horizontal directions, and image information of the bending points of the compensation chain can be captured from the side, improving the comprehensiveness of the compensation chain imaging and reducing the probability of missing defects such as cracks.

[0020] 2. By setting up a top pressure unit, a top pressure can be applied to the compensation chain during the testing process to ensure that it remains taut and avoid affecting the shooting accuracy due to the shaking of the compensation chain. When the compensation chain moves, it can also prevent excessive pressure from causing excessive wear on the surface of the compensation chain.

[0021] 3. By using light-shielding sleeves and light-shielding covers, the influence of external pipelines on image acquisition can be avoided. In conjunction with the elastic support unit, electromagnetic block and iron core, reciprocating pressure can be quickly applied to the bend of the compensation chain. The alternating pressure can cause some small cracks and other potential defects to be exposed, thereby improving the ability to capture hidden defects. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the machine vision-based quality detection device for the balance compensation chain of an elevator with steel balls provided by the present invention.

[0023] Figure 2 This is a schematic diagram of the internal structure of the light-shielding sleeve of the machine vision-based elevator balance compensation chain quality detection device with steel balls provided by the present invention.

[0024] Figure 3This is a top view of the internal structure of the light-shielding sleeve of the machine vision-based elevator balance compensation chain quality detection device with steel balls provided by the present invention.

[0025] Figure 4 This is a three-dimensional structural diagram of the left side plate and the movable side plate of the machine vision-based elevator balance compensation chain quality detection device with steel balls provided by the present invention.

[0026] Figure 5 This is a three-dimensional structural diagram of the movable side plate of the machine vision-based elevator balance compensation chain quality detection device with steel balls provided by the present invention.

[0027] Figure 6 This is a three-dimensional structural schematic diagram of the reversing guide tube of the machine vision-based elevator balance compensation chain quality detection device with steel balls provided by the present invention.

[0028] Figure 7 This invention provides a machine vision-based quality inspection device for the balance compensation chain of an elevator with steel balls. Figure 4 Enlarged view of the structure of section A;

[0029] Figure 8 This is a schematic diagram of the internal structure of the magnetic cylinder of the machine vision-based elevator balance compensation chain quality detection device with steel balls provided by the present invention.

[0030] In the diagram: 1. Machine base; 2. Control computer; 3. Support side plate; 4. Left side plate; 5. Movable side plate; 6. Wheel plate; 7. Directional wheel; 8. Guide unit; 81. Threading sleeve; 82. U-shaped block; 83. Reversing guide tube; 831. Straight section; 832. Reversing section; 9. Outer horizontal imaging assembly; 10. Inner horizontal imaging assembly; 11. Lateral imaging assembly; 12. Top pressure unit; 121. Mounting plate; 122. Electric push rod; 123. Top pressure block; 13. Light shield; 14. Light shield; 15. Detection port; 16. Elastic support unit; 161. Magnetic shielding cylinder; 162. Movable rod; 163. Magnetic shielding block; 164. Support spring; 17. Electromagnetic block; 18. Iron core; 19. Pressure detector; 20. Pressure measuring block. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] like Figures 1-8As shown, the machine vision-based quality inspection device for the balance compensation chain of an elevator with steel balls includes a machine base 1 and a control computer 2 installed on one side of the machine base 1. It also includes: a support side plate 3, which is fixed to the end face of the machine base 1. A left side plate 4 is fixed to the side wall of the support side plate 3, and a movable side plate 5 is slidably connected to the support side plate 3 on one side of the left side plate 4. Multiple sets of wheel plates 6 are fixed to the opposite side walls of the left side plate 4 and the movable side plate 5, and directional wheels 7 are rotatably connected between two wheel plates 6 in the same set. A guide unit 8 is installed on the side walls of the left side plate 4 and the movable side plate 5. The guide unit 8 guides the compensation chain to sequentially pass around each directional wheel 7 to form a spiral shape. The element 8 includes a threading sleeve 81 disposed on one side of the directional wheel 7, and two threading sleeves 81 in the same group correspond to the upper and lower wheel walls of the directional wheel 7 on the same side. The side walls of the left side plate 4 and the movable side plate 5 are threadedly connected to the threading sleeves 81 on the same side. U-shaped blocks 82 are sleeved on the outside of the threading sleeves 81 located on the lower side of the left side plate 4 and the movable side plate 5, and a reversing guide tube 83 is fixedly inserted into the side wall of the U-shaped block 82. The reversing guide tube 83 includes a straight section 831 and a reversing section 832. The straight section 831 is coaxial with the threading sleeve 81 on the same side, and the reversing section 832 of the reversing guide tube 83 on the left side plate 4 is coaxial with the corresponding reversing section 832 of the reversing guide tube 83 on the movable side plate 5.

[0033] The outer horizontal imaging component 9, the inner horizontal imaging component 10, and the side imaging component 11 are all fixed to the side wall of the supporting side plate 3 by a mounting bracket. The inner horizontal imaging component 10 is located between the left side plate 4 and the movable side plate 5, and the outer horizontal imaging component 9 is located above the inner horizontal imaging component 10. The side imaging component 11 is located on the side of the movable side plate 5 away from the left side plate 4. The outer horizontal imaging component 9, the inner horizontal imaging component 10, and the side imaging component 11 all include components such as an industrial camera and a supplementary light. The industrial camera can capture images of the surface of the compensation chain and transmit them to the control computer 2 for analysis. The supplementary light will illuminate the surface of the compensation chain to ensure clear imaging.

[0034] The top-pressing unit 12 is installed between the movable side plate 5 and the left side plate 4, and the top-pressing unit 12 is used to apply pressure to the movable side plate 5 away from the left side plate 4. The top-pressing unit 12 includes a mounting plate 121 fixedly installed on the side wall of the supporting side plate 3. Two electric push rods 122 are fixedly inserted into the side wall of the mounting plate 121. The movable ends of the two electric push rods 122 are both located on the side of the mounting plate 121 close to the movable side plate 5, and the movable ends of the two electric push rods 122 are both equipped with top-pressing blocks 123. The electric push rods 122 are electrically connected to the control computer 2.

[0035] A pressure detector 19 is fixedly installed on the side wall of the top pressure block 123 near the movable side plate 5, and a pressure measuring block 20 is fixed to the pressure measuring end of the pressure detector 19. The pressure detector 19 is electrically connected to the control computer 2. After the pressure detector 19 detects that the pressure reaches the threshold, it can send an electrical signal back to the control computer 2.

[0036] A light-shielding sleeve 13 is fixedly installed on the side wall of the supporting side plate 3. The left side plate 4, the movable side plate 5, the outer horizontal shooting component 9, the inner horizontal shooting component 10, and the side shooting component 11 are all located inside the light-shielding sleeve 13. A light-shielding cover 14 is hinged to the end of the light-shielding sleeve 13 away from the supporting side plate 3. Detection ports 15 are opened on the two opposite side walls of the light-shielding sleeve 13. The compensation chain enters the light-shielding sleeve 13 from the detection port 15 on one side, passes through the guide unit 8 and passes around each of the directional wheels 7 in sequence, and then exits from the detection port 15 on the other side. The light-shielding sleeve 13 is equipped with an elastic support unit 16 for supporting the movable side plate 5. The light-shielding sleeve 13 and the light-shielding cover 14 can prevent the influence of external ambient light.

[0037] The elastic support unit 16 includes multiple magnetic shielding cylinders 161 fixedly installed on the inner wall of the light shielding sleeve 13. The ends of the magnetic shielding cylinders 161 are slidably connected to movable rods 162, and the end of the movable rod 162 away from the magnetic shielding cylinders 161 is fixedly connected to the movable side plate 5. The end of the movable rod 162 is fixedly provided with a magnetic shielding block 163 slidably disposed inside the magnetic shielding cylinders 161, and a support spring 164 is fixed between the magnetic shielding block 163 and the magnetic shielding cylinders 161. Through elastic support, the stability of the movable side plate 5 can be improved after the top pressure applied to it by the electric push rod 122 is lost.

[0038] An electromagnetic block 17, which is electrically connected to the control computer 2, is fixed at the end of the magnetic shielding cylinder 161 away from the movable rod 162. An iron core 18 is fixed at the end of the magnetic shielding block 163 near the electromagnetic block 17. When the electromagnetic block 17 is energized, it will generate a magnetic attraction force on the iron core 18.

[0039] The operating principle of the present invention is explained as follows: The compensation chain to be tested is inserted into the light-shielding sleeve 13 through the detection port 15 on one side of the light-shielding sleeve 13. Then, the compensation chain passes through the upper side of the corresponding directional wheel 7, and passes through the threading sleeve 81 on the side wall of the left side plate 4 and the movable side plate 5 to go around the directional wheel 7 on the other side. Then, the compensation chain is passed through the lower threading sleeve 81 from the lower wheel wall of the directional wheel 7 and inserted into the corresponding reversing guide tube 83. After being guided by the reversing guide tube 83, the compensation chain is then reversed at the point where it is introduced into the next row of directional wheels 7. The guide tube 83 then passes through the corresponding threading sleeve 81 again and around the directional wheel 7. Following the above operation, the compensation chain passes around all the directional wheels 7 in sequence. Then, the compensation chain is led out from the detection port 15 on the other side of the light-shielding sleeve 13 and wound up by the winding equipment (the winding equipment mainly includes a frame, winding roller, motor, roller shaft, bearings and other components. The motor of the winding equipment is controlled by the control computer 2), so that the compensation chain is spiral (in order to avoid the beginning of the compensation chain not being detected, a cable of the same diameter can be connected to the beginning of the compensation chain).

[0040] Subsequently, the light shield 14 of the light shield 13 is closed and locked, and the detection operation is started through the control computer 2. The control computer 2 controls the operation of the outer horizontal imaging component 9, the inner horizontal imaging component 10, and the side imaging component 11 (the outer horizontal imaging component 9, the inner horizontal imaging component 10, and the side imaging component 11 all include components such as industrial cameras and supplementary lights. The industrial camera can capture images of the surface of the compensation chain and transmit them to the control computer 2 for analysis. The supplementary light will illuminate the surface of the compensation chain to ensure clear imaging). The outer horizontal imaging component 9 will capture images of one side of the compensation chain from above. Since the compensation chain is spirally wound around the directional wheel 7, the inner horizontal imaging component 10 can capture images of the other side of the compensation chain. When the compensation chain passes around the directional wheel 7, the compensation chain will bend at the position of the directional wheel 7, and the side imaging component 11 will capture images of the bent position of the compensation chain. The image information captured by the external horizontal imaging component 9, the internal horizontal imaging component 10, and the side imaging component 11 is transmitted to the control computer 2. The control computer 2 performs noise reduction and other processing on the images, and compares the abnormal areas in the images one by one through template matching and edge detection algorithms. Finally, the detection results are compared with the preset pass standard to determine whether the compensation chain is qualified. If qualified, the control computer 2 will control the external winding device to work and wind up the compensation chain, moving it a certain distance (this distance is set based on the shooting length range of the external horizontal imaging component 9, the internal horizontal imaging component 10, and the side imaging component 11, and it must be ensured that the external horizontal imaging component 9, the internal horizontal imaging component 10, and the side imaging component 11 can fully cover the compensation chain in the length direction of the compensation chain). If unqualified, the control computer 2 will issue an audible and visual alarm, automatically record the defect information and location information, and then control the winding device to continue working until the detection of the entire compensation chain is completed.

[0041] After a single position detection is completed, the control computer 2 controls the electric push rod 122 to perform a 3-second timed return stroke, causing the pressure measuring block 20 of the pressure detector 19 to disengage from the movable side plate 5. At this time, when the compensation chain moves, since the top pressure applied to the movable side plate 5 by the electric push rod 122 through the pressure detector 19 and the pressure measuring block 20 is no longer present, the movable side plate 5 has a certain displacement space, thus avoiding surface damage caused by the compensation chain moving under high pressure. After the compensation chain has moved, the control computer 2 controls the electromagnetic block 17 to operate at a frequency of energizing for 1 second and de-energizing for 1 second (the intensity of a single energization can be preset by the control computer 2). When the electromagnetic block 17 is energized, it generates a magnetic attraction force on the iron core 18. At this time, the electromagnetic block 17 applies a pulling force to the movable rod 162 through the iron core 18 and the magnetic shielding block 163, thereby applying a pulling force to the movable side plate 5 in a direction away from the left side plate 4. This increases the pressure of the directional wheel 7 on the side wall of the movable side plate 5 on the compensation chain. When the electromagnetic block 17 is de-energized, under the action of the support spring 164, the magnetic shielding block 163 drives the movable side plate 5 to quickly move back to its original position through the movable rod 162. At this time, the pressure of the directional wheel 7 on the side wall of the movable side plate 5 on the compensation chain decreases. By intermittently energizing the electromagnetic block 17, the directional wheel 7 on the side wall of the movable side plate 5 can apply a reciprocating force to the compensation chain. Under pressure, the base layer of the compensation chain undergoes cyclic deformation as the pressure changes. When the pressure increases, the base layer is squeezed by the directional wheel 7, and the internal hidden micro-cracks are opened due to stress concentration. The loose bonding interface between the steel ball and the base layer also produces micro-gaps due to compression. When the pressure decreases, the base layer elastically rebounds. However, due to structural incompleteness, the rebound rate at the cracks or loose bonding interface differs from that of the normal area. After repeated cycles, the originally hidden micro-cracks gradually expand, and slight edge warping appears in the loose bonding area, eventually making these hidden defects clearly visible and reducing the possibility of missing cracks and other defects. The electromagnetic block 17 stops working after being energized 30 times (the number of energizations can be adjusted according to different compensation chain requirements). (The control computer 2 makes a preset setting). Then, the control computer 2 controls the electric push rod 122 to extend. The electric push rod 122 applies pressure to the movable side plate 5 through the top pressure block 123, pressure detector 19 and pressure measuring block 20, thereby increasing the pressure between the directional wheel 7 on the side wall of the movable side plate 5 and the compensation chain, thus keeping the compensation chain in a taut and stable state. After the pressure reaches the threshold, the pressure detector 19 will feed back an electrical signal to the control computer 2. At this time, the control computer 2 controls the electric push rod 122 to stop working. Then, the control computer 2 controls the outer horizontal shooting component 9, the inner horizontal shooting component 10 and the side shooting component 11 to continue to carry out image acquisition.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A machine vision-based quality inspection device for a steel ball-equipped elevator balance compensation chain, comprising a machine base (1) and a control computer (2) disposed on one side of the machine base (1), characterized in that, Also includes: A support side plate (3) is fixed to the end face of the machine base (1). A left side plate (4) is fixed to the side wall of the support side plate (3), and a movable side plate (5) is provided on one side of the left side plate (4) and is slidably connected to the support side plate (3). Multiple sets of wheel plates (6) are fixed to the side walls of the opposite side of the left side plate (4) and the movable side plate (5), and a directional wheel (7) is rotatably connected between two wheel plates (6) in the same set. The guide unit (8) is installed on the side wall of the left side plate (4) and the movable side plate (5). The guide unit (8) guides the compensation chain to pass around each directional wheel (7) in sequence to form a spiral shape. The outer horizontal shooting component (9), the inner horizontal shooting component (10) and the side shooting component (11) are all fixed to the side wall of the supporting side plate (3) by the mounting bracket. The inner horizontal shooting component (10) is located between the left side plate (4) and the movable side plate (5), and the outer horizontal shooting component (9) is located above the inner horizontal shooting component (10). The side shooting component (11) is located on the side of the movable side plate (5) away from the left side plate (4). A top pressure unit (12) is installed between the movable side plate (5) and the left side plate (4), and the top pressure unit (12) is used to apply pressure to the movable side plate (5) in a direction away from the left side plate (4).

2. The machine vision-based quality inspection device for the balance compensation chain of an elevator with steel balls according to claim 1, characterized in that, The guide unit (8) includes a threading sleeve (81) disposed on one side of the directional wheel (7), and the two threading sleeves (81) in the same group correspond to the upper and lower wheel walls of the directional wheel (7) on the same side respectively. The side walls of the left side plate (4) and the movable side plate (5) are threadedly connected to the threading sleeves (81) on the same side. The outer side of the threading sleeves (81) located on the lower side of the left side plate (4) and the movable side plate (5) is fitted with a U-shaped block (82), and the side wall of the U-shaped block (82) is fixedly inserted with a reversing guide tube (83).

3. The machine vision-based quality inspection device for the balance compensation chain of an elevator with steel balls according to claim 2, characterized in that, The reversing guide tube (83) includes a straight section (831) and a reversing section (832). The straight section (831) is coaxial with the wire sleeve (81) on the same side. The reversing section (832) of the reversing guide tube (83) on the left side plate (4) is coaxial with the reversing section (832) of the corresponding reversing guide tube (83) on the movable side plate (5).

4. The machine vision-based quality inspection device for the balance compensation chain of an elevator with steel balls according to claim 1, characterized in that, The top-pressing unit (12) includes a mounting plate (121) fixedly installed on the side wall of the support side plate (3). Two electric push rods (122) are fixedly inserted into the side wall of the mounting plate (121). The movable ends of the two electric push rods (122) are both located on the side of the mounting plate (121) close to the movable side plate (5), and the movable ends of the two electric push rods (122) are both equipped with top-pressing blocks (123). The electric push rods (122) are electrically connected to the control computer (2).

5. The machine vision-based quality inspection device for the balance compensation chain of an elevator with steel balls according to claim 4, characterized in that, The pressure detector (19) is fixedly installed on the side wall of the top pressure block (123) near the movable side plate (5), and the pressure measuring end of the pressure detector (19) is fixed with a pressure measuring block (20). The pressure detector (19) is electrically connected to the control computer (2).

6. The machine vision-based quality inspection device for the balance compensation chain of an elevator with steel balls according to claim 5, characterized in that, A light-shielding sleeve (13) is fixedly installed on the side wall of the supporting side plate (3). The left side plate (4), the movable side plate (5), the outer horizontal shooting component (9), the inner horizontal shooting component (10) and the side shooting component (11) are all located inside the light-shielding sleeve (13). A light shield (14) is hinged to one end of the light-shielding sleeve (13) away from the supporting side plate (3). Detection ports (15) are opened on the two opposite side walls of the light-shielding sleeve (13). The compensation chain enters the light-shielding sleeve (13) from one detection port (15), passes through the guide unit (8) and passes through each directional wheel (7) in sequence, and then exits from the detection port (15) on the other side. An elastic support unit (16) for supporting the movable side plate (5) is installed on the light-shielding sleeve (13).

7. The machine vision-based quality inspection device for the balance compensation chain of an elevator with steel balls according to claim 6, characterized in that, The elastic support unit (16) includes a plurality of magnetic shielding cylinders (161) fixedly installed on the inner side wall of the light shielding sleeve (13). The end of the magnetic shielding cylinder (161) is slidably connected to a movable rod (162), and the end of the movable rod (162) away from the magnetic shielding cylinder (161) is fixedly connected to the movable side plate (5). The end of the movable rod (162) is fixedly provided with a magnetic shielding block (163) slidably disposed inside the magnetic shielding cylinder (161), and a support spring (164) is fixed between the magnetic shielding block (163) and the magnetic shielding cylinder (161).

8. The machine vision-based quality inspection device for the balance compensation chain of an elevator with steel balls according to claim 7, characterized in that, An electromagnetic block (17) electrically connected to the control computer (2) is fixed at the end of the magnetic shielding cylinder (161) away from the movable rod (162), and an iron core (18) is fixed at the end of the magnetic shielding block (163) near the electromagnetic block (17).

Images