Liftable light source lighting device for visual inspection system

Abstract

The utility model discloses a liftable light source lighting device for a visual inspection system, which comprises a top frame connected with a light source mounting bracket through a left telescopic bracket and a right telescopic bracket; the light source installation support is of a frame structure composed of a transverse rod and a longitudinal beam, and a light source is arranged on the transverse rod. The left telescopic bracket and the right telescopic bracket are formed by connecting scissor type brackets; a lifting driving mechanism is installed in the middle of the top frame and comprises a motor, the motor simultaneously drives left and right steel wire winding discs to rotate through a worm, and the left and right steel wire winding discs are connected with the bottoms of the left and right telescopic supports through steel wires respectively. Compared with the prior art, the light source installation support can be stable and controllable in the lifting process, the light source installation support is particularly suitable for being installed in the space position with the limited size, the structure is made of sectional materials, light weight is achieved, and operation of other mechanisms of equipment cannot be affected. The automatic control problem of vertical movement of the light source is effectively solved through the limiting sensor.

Description

Technical Field

[0001] The utility model belongs to the technical field of rail vehicle detection systems, and in particular relates to a liftable light source lighting device for a visual detection system. Background Art

[0002] With economic development and technological progress, the rail transit industry has also ushered in a prosperous development. Rail transit vehicle bogies play the role of load-bearing, guiding, traction, braking, and vibration reduction, which directly determines the stability and ride comfort of the vehicle. They are key components of EMUs, urban subways and other vehicles. With the widespread application of visual inspection in the field of industrial manufacturing, visual inspection technology is used as a means to replace human eyes for measurement and judgment to inspect the quality of bogies. Intelligent bogie inspection equipment can quickly and accurately check wheel tread defects to avoid problems that affect vehicle driving safety.

[0003] A typical visual inspection system includes a CCD camera, lens, light source, and image processing software, among which light source illumination is an important factor affecting the input of the machine vision system, which directly affects the quality of the input data and the application effect. In practical applications, it is necessary to select the corresponding lighting equipment for the application to meet specific needs. Moreover, as part of the entire system, the lighting equipment is usually arranged near the material to be tested, which brings a problem: when other parts of the equipment also need to operate close to the material to be tested, they often interfere with the lighting equipment. Therefore, the lighting equipment needs to be able to move as needed, move to a preset position near the material during inspection, and move to a position that does not affect the operation of other mechanisms of the equipment after the inspection is completed. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a light source lighting device that can be lifted and lowered for a visual inspection system, solving the automatic control of the light source moving up and down.

[0005] The utility model discloses a liftable light source lighting device for a visual inspection system, which comprises a top frame, wherein the top frame is connected to a light source mounting bracket through left and right telescopic brackets;

[0006] The light source mounting bracket is a frame structure composed of a crossbar and a longitudinal beam, and the light source is mounted on the crossbar;

[0007] The left and right telescopic brackets are connected by scissor-type brackets;

[0008] A lifting drive mechanism is installed in the middle position of the top frame, and the lifting drive mechanism includes a motor. The motor drives the left and right wire winding discs to rotate simultaneously through a worm rod. The left and right wire winding discs are respectively connected to the bottoms of the left and right telescopic brackets through steel wires.

[0009] According to some embodiments of the utility model, wire reversing wheels are provided on the left and right sides of the top frame, and the steel wire changes its movement direction from horizontal to vertical through the wire reversing wheels.

[0010] According to some embodiments of the utility model, a clamping block is provided at the bottom of the steel wire, and the clamping block is used to be fixedly installed at the bottom of the left and right telescopic brackets.

[0011] According to some embodiments of the present utility model, a reinforcing sheet formed by bending sheet metal is provided on the light source mounting bracket.

[0012] According to some embodiments of the present invention, the cross-section of the light source mounting bracket is in a “ㄇ” shape.

[0013] According to some embodiments of the utility model, the worm gear simultaneously drives the left and right wire winding discs to rotate through a reduction gear set.

[0014] According to some embodiments of the present utility model, the reduction gear set is meshed with a height adjustment gear, and the height adjustment gear triggers a limit sensor to control the descending and ascending height of the light source mounting bracket.

[0015] According to some embodiments of the utility model, a boss is provided on the height adjustment gear, and the boss can trigger a swinging piece of a limit sensor, thereby sending a signal to stop the motor from rotating.

[0016] According to some embodiments of the utility model, an upper cross bar is provided on the upper portion of the scissor-type bracket for being connected and fixed to the top frame.

[0017] According to some embodiments of the utility model, a lower cross bar is provided at the lower portion of the scissor-type bracket for connecting and fixing with the light source mounting bracket.

[0018] The utility model has at least the following beneficial effects: the utility model uses a lifting drive mechanism to provide the power required by the device to drive the steel wire, drive the light source installation bracket to rise or fall, and can be adjusted and controlled within a certain height range; the left and right telescopic brackets are used to maintain the stability of the light source installation bracket; the light source installation bracket is made of profiles, which reduces weight while maintaining strength and effectively prevents vertical bending and deformation. Compared with the prior art, the utility model can achieve a stable and controllable lifting process of the light source installation bracket, and is particularly suitable for installation in a space with limited size. It also uses a profile manufacturing structure to achieve lightweight and will not affect the operation of other mechanisms of the equipment. In addition, the limit sensor is used to effectively solve the problem of automatic control of the light source moving up and down.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 This is a reference diagram of the use state of the utility model;

[0023] Figure 3 This is a schematic diagram of the motor control of the utility model;

[0024] Figure 4 This is a schematic diagram of the motor structure of the utility model;

[0025] Figure 5 This is a schematic diagram of the light source mounting bracket structure of the utility model;

[0026] Figure 6 This is a schematic diagram of the telescopic bracket structure of the utility model; DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In the description of the present utility model, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0030] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0031] Reference Figure 1A liftable light source lighting device for a visual inspection system comprises a top frame 1, wherein the top frame 1 is connected to a light source mounting bracket 4 via left and right telescopic brackets 2 and 3.

[0032] Reference Figure 5 , the light source mounting bracket 4 is a frame structure composed of a crossbar 41 and a longitudinal beam 42, and a light source 43 is installed on the crossbar 41; the structure can keep the dimensional deformation less than 5mm under the conditions of a wheelset diameter of 1m and a wheelset span of 2.5m, and the overall mass is less than 30kg. The light source mounting bracket 4 is provided with a reinforcing sheet 44 formed by bending sheet metal. The cross section of the light source mounting bracket 4 is in a "ㄇ" shape. Its function is to install and fix the strip light source according to the required size. In order to ensure that the quality of the component is within the motor load range, except for the reinforcing sheet 44 formed by bending Q235 sheet metal, the remaining parts are all made of aluminum. With such a design, the total weight of the light source mounting bracket is only 22kg. At the same time, it has only about 3mm vertical deformation at a total length of 4.3m.

[0033] Reference Figure 6 The left and right telescopic brackets 2 and 3 are connected by a scissor-type bracket 8; the telescopic height is 1.1m, and the length does not exceed 0.3m when fully retracted. An upper cross bar 81 is provided on the upper part of the scissor-type bracket 8 for connecting and fixing with the top frame 1. A lower cross bar 82 is provided on the lower part of the scissor-type bracket 8 for connecting and fixing with the light source mounting bracket 4. Its function is to connect the light source device below so that it remains stable during the rising and falling process. The stroke of the telescopic rod can be controlled by the number of rods. In this case, the telescopic stroke is 1.1m, and the height after retraction is 0.3m.

[0034] Reference Figure 4 A lifting drive mechanism 5 is installed in the middle of the top frame 1. The lifting drive mechanism 5 includes a motor 51. The motor 51 is a DC motor with a rated load of 35 kg. The motor 51 drives the left and right wire winding discs 52 and 53 to rotate simultaneously through a worm. The left and right wire winding discs 52 and 53 are connected to the bottom of the left and right telescopic brackets 2 and 3 respectively through a wire 54. The worm drives the left and right wire winding discs 52 and 53 to rotate simultaneously through a reduction gear set 55. The reduction gear set 55 is meshed with a height adjustment gear 56, and the height adjustment gear 56 triggers a limit sensor 57 to control the descending and ascending height of the light source mounting bracket 4. The reduction gear set 55 is used to correspond the entire stroke of the wire to make the height adjustment gear rotate exactly one circle. A boss 561 is provided on the height adjustment gear 56, and the boss 561 can trigger a swinging piece 571 of a limit sensor 57, thereby sending a signal to stop the motor 51 from rotating. There are two bosses 561 on the height adjustment gear 56, which can correspond to two limit sensors 57 respectively, so as to control the descending and ascending heights.

[0035] Reference Figure 3 The steel wire 2 plays a role in transferring the load. The left and right sides of the top frame 1 are provided with steel wire reversing wheels 6. The steel wire 54 changes its movement direction from the horizontal direction to the vertical direction through the steel wire reversing wheels 6. A clamping block 7 is provided at the bottom of the steel wire 54. The clamping block 7 is used to be fixedly installed at the bottom of the left and right telescopic brackets 2 and 3 for easy connection and fixing.

[0036] Reference Figure 2 As a part of the bogie intelligent detection equipment, the tread detection device must be arranged directly above the tread of the bogie wheelset 9. Due to the existing size and structural limitations of the equipment, other parts of the equipment also need to operate near the wheelset tread. By adjusting the parameters of the CCD camera and the lens, the height at which they are arranged can be placed on the top of the equipment without affecting the operation of the equipment. However, after testing, in order to ensure the lighting effect of the light source, the light source must be close to the wheelset, so that the light source cannot avoid the working range of other parts of the equipment. Therefore, the light source needs to be able to move, and descend to the vicinity of the wheelset tread when tread detection is required. After the detection is completed, it rises to a height that does not affect other parts of the equipment to ensure the operation of the entire equipment. The utility model proposes a liftable light source lighting device to solve the need for the light source of the tread detection device to move up and down, comprehensively considers the on-site use scenario, uses a motor device to drive the lifting, and realizes the function of automatic control without manual labor through the bogie intelligent detection equipment.

[0037] The utility model utilizes the lifting drive mechanism 5 to provide the power required by the device to drive the steel wire 54, driving the light source mounting bracket 4 to lift or lower, and can be adjusted and controlled within a certain height range; the left and right telescopic brackets 2 and 3 are used to maintain the stable lifting of the light source mounting bracket 4; the light source mounting bracket 4 is made of profiles, which reduces weight while maintaining strength, and effectively prevents vertical bending and deformation. Compared with the prior art, the utility model can achieve a stable and controllable lifting process of the light source mounting bracket 4, and is particularly suitable for installation in a space with limited size. It also adopts a profile manufacturing structure to achieve lightweight and will not affect the operation of other mechanisms of the equipment. In addition, the limit sensor 57 is used to effectively solve the problem of automatic control of the light source moving up and down.

[0038] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A liftable light source lighting device for a visual inspection system, characterized in that: It comprises a top frame (1), wherein the top frame (1) is connected to a light source mounting bracket (4) via left and right telescopic brackets (2, 3); The light source mounting bracket (4) is a frame structure composed of a crossbar (41) and a longitudinal beam (42), and a light source (43) is mounted on the crossbar (41); The left and right telescopic brackets (2, 3) are connected by a scissor-type bracket (8); A lifting drive mechanism (5) is installed in the middle of the top frame (1), and the lifting drive mechanism (5) comprises a motor (51). The motor (51) drives the left and right wire winding discs (52, 53) to rotate simultaneously through a worm gear. The left and right wire winding discs (52, 53) are respectively connected to the bottom of the left and right telescopic brackets (2, 3) through steel wires (54).

2. The liftable light source lighting device for a visual inspection system according to claim 1, characterized in that: Steel wire reversing wheels (6) are provided on the left and right sides of the top frame (1), and the steel wire (54) changes its movement direction from the horizontal direction to the vertical direction through the steel wire reversing wheels (6).

3. The liftable light source lighting device for a visual inspection system according to claim 1, characterized in that: A clamping block (7) is provided at the bottom of the steel wire (54), and the clamping block (7) is used for being fixedly mounted on the bottom of the left and right telescopic brackets (2, 3).

4. The liftable light source lighting device for a visual inspection system according to claim 1, characterized in that: The light source mounting bracket (4) is provided with a reinforcing sheet (44) formed by bending a sheet metal.

5. The liftable light source lighting device for a visual inspection system according to claim 1, characterized in that: The light source mounting bracket (4) has a cross-section in the shape of a "ㄇ".

6. The liftable light source lighting device for a visual inspection system according to claim 1, characterized in that: The worm shaft drives the left and right wire winding discs (52, 53) to rotate simultaneously through a reduction gear set (55).

7. The liftable light source lighting device for a visual inspection system according to claim 6, characterized in that: The reduction gear set (55) and the height adjustment gear (56) are meshed with each other, and the height adjustment gear (56) triggers the limit sensor (57) to control the descending and ascending height of the light source mounting bracket (4).

8. The liftable light source lighting device for a visual inspection system according to claim 7, characterized in that: The height adjustment gear (56) is provided with a boss (561), and the boss (561) can trigger a swinging piece (571) of a limit sensor (57), thereby sending a signal to stop the motor (51) from rotating.

9. The liftable light source lighting device for a visual inspection system according to claim 1, characterized in that: An upper crossbar (81) is provided on the upper portion of the scissor-type bracket (8) for being connected and fixed to the top frame (1).

10. The liftable light source lighting device for a visual inspection system according to claim 1, characterized in that: The lower part of the scissor-type bracket (8) is provided with a lower crossbar (82) for being connected and fixed to the light source mounting bracket (4).

Images