A laser deflection electric adjustment device

Abstract

The present invention discloses a laser deflection electric adjustment device, which includes a fine adjustment base, a fine adjustment movable plate installed above the fine adjustment base, and a coarse adjustment rotating frame rotatably installed on a coarse adjustment fixed frame. The fine adjustment base is rotatably installed on the inner wall of the coarse adjustment rotating frame. A first motor for rotating the coarse adjustment rotating frame is provided on the coarse adjustment fixed frame. A second motor for rotating the fine adjustment movable plate is provided on the coarse adjustment rotating frame. A third motor and a fourth motor for adjusting the vertical distance between the fine adjustment movable plate and the fine adjustment base are arranged diagonally on the fine adjustment movable plate. The rotation axis of the fine adjustment base is perpendicular to the axial direction of the rotation axis of the coarse adjustment rotating frame. By controlling the rotation of the adjustment mechanism with motors, the present invention ensures that the laser spot can accurately hit the target position, achieving precise adjustment and control of the laser.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental monitoring equipment, and particularly to a laser deflection electric adjustment device. Background Art

[0002] When a visual TSP (Particulate Matter Concentration Image Visual Detection System) is used for environmental monitoring, a laser beam needs to be emitted to the collector of the monitoring system, and the collector collects it. The distance is 100 - 150m, which is a long distance. At this time, a particularly tiny adjustment mechanism is required to adjust the deflection of the laser. The existing laser deflection adjustment is manual adjustment, which is completed by the combined use of coarse adjustment and fine adjustment. The coarse adjustment is to first adjust the laser near the collector, and then the fine adjustment is carried out. The fine adjustment uses a micrometer head screw adjustment. Whether it is coarse adjustment or fine adjustment, it needs to be manually adjusted, and it needs to be adjusted repeatedly for many times, which is very inconvenient. Moreover, the laser emitted by the monitoring equipment is very likely to injure people's eyes or be blocked by passing pedestrians. Therefore, the equipment is generally installed at a high place, at least higher than people. When adjusting the laser, the operator needs to step on the bracket, then open the chassis door and reach inside to adjust. After adjustment, because the hand usually touches the chassis, it is easy to cause downward pressure, resulting in the adjusted laser being prone to deviation, inaccurate, and unable to meet the monitoring requirements. Summary of the Invention

[0003] The purpose of the present invention is to provide a laser deflection electric adjustment device that can be adjusted and controlled through remote control or Bluetooth control in view of the technical defects existing in the prior art.

[0004] The technical solution adopted to achieve the purpose of the present invention is as follows:

[0005] A laser deflection electric adjustment device is used to adjust the position of the laser spot emitted by a laser lamp. The laser deflection electric adjustment device includes a fine adjustment base, a fine adjustment movable plate installed above the fine adjustment base, and a coarse adjustment rotating frame rotatably installed on a coarse adjustment fixed frame. The fine adjustment base is rotatably installed on the inner wall of the coarse adjustment rotating frame. A first motor for rotating the coarse adjustment rotating frame is provided on the coarse adjustment fixed frame. A second motor for rotating the fine adjustment movable plate is provided on the coarse adjustment rotating frame. Third and fourth motors for adjusting the vertical distance between the fine adjustment movable plate and the fine adjustment base are arranged diagonally on the fine adjustment movable plate. The rotation axis of the fine adjustment base is perpendicular to the axial direction of the rotation axis of the coarse adjustment rotating frame.

[0006] The laser deflection electric adjustment device of the present invention uses four motors to control the rotation of the adjustment mechanism respectively, so as to achieve the coarse adjustment and fine adjustment of the laser, ensure that the laser spot can accurately hit the target position, and realize the precise adjustment and control of the laser.

[0007] In addition, by controlling the laser through the motor, it is convenient to precisely control the motor. The four motors are connected to the main control board and are remotely controlled. For example, instructions are transmitted and controlled through Bluetooth control or other wireless methods, enabling remote control operations of the laser deflection electric adjustment device and facilitating operation and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 FIG. is a schematic structural diagram of a laser deflection electric adjustment device according to an embodiment of the present invention.

[0009] Figure 2 FIG. is a schematic structural diagram of the coarse adjustment module of the laser deflection electric adjustment device of the present invention installed on the equipment mounting plate.

[0010] Figure 3 FIG. is a schematic structural diagram of the coarse adjustment module of the laser deflection electric adjustment device of the present invention.

[0011] Figure 4 FIG. is a schematic structural diagram of a fine adjustment module of the laser deflection electric adjustment device of the present invention.

[0012] Figure 5 FIG. is another schematic structural diagram of the fine adjustment module of the laser deflection electric adjustment device of the present invention.

[0013] Figure 6 FIG. is yet another schematic structural diagram of the fine adjustment module of the laser deflection electric adjustment device of the present invention.

[0014] DESCRIPTION OF THE REFERENCE NUMERALS:

[0015] 1 is the first motor, 2 is the second motor, 3 is the third motor, 4 is the fourth motor, 5 is the laser lamp, 6 is the heat sink, 7 is the coarse adjustment fixing frame, 21 is the first frame, 22 is the first frame, 23 is the third frame, 24 is the fourth frame, 25 is the fine adjustment base, 26 is the first limit mechanical switch, 27 is the second limit mechanical switch, 28 is the third limit mechanical switch, 29 is the fourth limit mechanical switch, 30 is the first set screw, 31 is the second set screw, 32 is the third set screw, 33 is the threaded hole, 34 is the shaft hole, 50 is the fine adjustment movable plate, 51 is the first ball head link universal joint, 52 is the first ball head link universal joint, 53 is the first photoelectric switch, 54 is the second photoelectric switch, 55 is the photoelectric switch support plate, 56 is the upper and lower light blocking pieces, 57 is the left and right limit light blocking pieces, 58 is the tension spring, 60 is the rotary output arm, 61 is the rotary connecting shaft, 62 is the differential cap, 63 is the differential column. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0017] In the laser deflection electric adjustment device according to the embodiment of the present invention, the adjustment is driven by a motor. Among them, the coarse adjustment is carried out by driving the coarse adjustment rotating frame to rotate by the motor, and the fine adjustment is carried out by driving the differential screw by the motor. It is driven by four motors. Both the coarse and fine adjustments can adjust the four directions of up, down, left, and right. The four motors can be controlled by the main control board, and a wireless module such as a LORA module or a Bluetooth module can be set on the main control board; the portable intelligent terminal can be remotely connected to the main control board through the installed application program to remotely control the four motors, so as to realize the remote control and adjustment of the laser.

[0018] In this application, the left and right adjustment and the up and down adjustment are centered on the irradiation target of the laser spot. Adjusting the position of the laser spot in the horizontal direction to irradiate the target is the left and right adjustment, and adjusting the position of the laser spot in the vertical direction to irradiate the target is the up and down adjustment.

[0019] As Figures 1 to 5 shown, the laser deflection electric adjustment device according to the embodiment of the present invention is used to adjust the position of the laser spot emitted by the laser lamp 5. The laser lamp is installed on the heat dissipation block 6, and the heat dissipation block 6 is installed on the laser deflection electric adjustment device. The laser deflection electric adjustment device includes a rotatable fine adjustment base 25, a fine adjustment movable plate 50 installed above the fine adjustment base 25, and a coarse adjustment rotating frame rotatably installed on the coarse adjustment fixed frame 7. The fine adjustment base 25 is rotatably installed on the inner wall of the coarse adjustment rotating frame. A first motor 1 is provided on the coarse adjustment fixed frame 7, a second motor 2 is provided on the coarse adjustment rotating frame, a third motor 3 and a fourth motor 4 are provided on the fine adjustment movable plate 50. The first motor 1 is used to control the up and down adjustment of the coarse adjustment, so as to realize the adjustment by rotating the coarse adjustment rotating frame. The second motor 2 is used to control the left and right adjustment of the coarse adjustment, so as to realize the adjustment by rotating the fine adjustment base 25 and the components thereon. The third motor 3 is used to control the left and right adjustment of the fine adjustment, so as to realize the left and right adjustment to control the distance between the fine adjustment movable plate 50 and the fine adjustment base 25. The fourth motor 4 is used to control the up and down adjustment of the fine adjustment, so as to realize the up and down adjustment to control the distance between the fine adjustment movable plate 50 and the fine adjustment base 25. Among them, the rotation axis of the fine adjustment base 25 is perpendicular to the axial direction of the rotation axis of the coarse adjustment rotating frame, and the third motor 3 and the fourth motor 4 are arranged diagonally; the heat dissipation block 6 is installed on the fine adjustment movable plate 50 of the laser deflection electric adjustment device.

[0020] As a preferred embodiment, the coarse adjustment rotating frame is formed by four side frames into a rectangular frame structure. The four side frames include a first side frame 21, a second side frame 22, a third side frame 23, and a fourth side frame 24. The four side frames are connected end to end to form a rectangular frame structure. The second side frame 22 is opposite to the third side frame 24, and the first side frame 21 is opposite to the third side frame 23. The first motor 1 is installed on one side frame of the coarse adjustment rotating frame, and the second motor 2 is installed on the coarse adjustment fixing frame 7. The first motor 1 and the second motor 2 are arranged adjacent to each other.

[0021] As a preferred embodiment or example, the coarse adjustment fixing frame 7 is formed by a bottom plate and vertical plates arranged at two opposite ends of the bottom plate and on the same side of the bottom plate, generally in a U-shaped structure, and is fixedly connected to the mounting plate of the device by bolts through its bottom plate.

[0022] In this application, the coarse adjustment rotating frame 7 is driven by a motor and can rotate around an axis. Specifically, it can be driven by the second motor 2 to rotate around the output shaft of the second motor. The second motor is installed on one vertical plate of the coarse adjustment fixing frame 7. This vertical plate is located outside the fourth side frame. Its motor shaft passes through the shaft hole on this vertical plate and is connected to the fourth side frame 24. The second side frame 22 of the coarse adjustment rotating frame forms a rotational connection with another vertical plate of the coarse adjustment fixing frame 7. Specifically, at the middle position of the second side frame 22, it is connected to the threaded hole 33 by a set screw to form a rotational connection structure. In addition, a long first set screw 30 is arranged on the vertical plate of the coarse adjustment fixing frame 7 adjacent to the second side frame 22 for hard limiting of the coarse adjustment rotating frame to prevent damage. The first set screw 30 extends into the rotational limit groove (not shown) on the side surface of the second side frame 22 to achieve hard limiting of rotation. Further, there are also corresponding rotational limit holes on the outside of the fourth side frame 24, which cooperate with the third set screw 32 on the vertical plate on the same side of the coarse adjustment fixing frame 7 to achieve limiting.

[0023] Among them, a fine adjustment base 25 that can be driven to rotate is arranged on the inner side wall of the coarse adjustment rotating frame. The first motor 1 is fixed on the third side frame 23. The output shaft of the first motor 1 passes through the shaft hole on the third side frame 23 and is connected to the shaft hole 34 on the outer surface of one end of the fine adjustment base 25 on the inner side wall of the coarse adjustment rotating frame. The shaft hole on the outer side surface of the other end of the fine adjustment base 25 relative to the first motor 1 forms a rotational connection with the first side frame 21 through a pin shaft. A second set screw 31 is arranged on the third side frame 23 for hard limiting to prevent damage. The inner end of the second set screw 31 extends into the rotational limit groove corresponding to the fine adjustment base 25. Of course, the set screws in this application can also be implemented with other structures to achieve the functions of rotation or limiting, and are not limited to using the set screws described above.

[0024] As a preferred embodiment, the fine adjustment base 25 is formed by connecting two oppositely arranged rotary connecting arms through a connecting plate, and is integrally U-shaped and horizontally arranged. The U-shaped opening points to the installation position of the second motor 2, that is, the inner side of the fourth frame.

[0025] Further, a first mechanical limit switch 26 and a second mechanical limit switch 27 are arranged at intervals up and down on the inner wall surface of the first frame 21, and are respectively arranged above and below the rotary connecting arms on the same side of the fine adjustment base 25, and are used for limiting the rotation angle when the fine adjustment base 25 performs rotary adjustment. In addition, a third limit mechanical switch 28 and a fourth limit mechanical switch 29 are fixedly installed on the coarse adjustment fixing frame 7 and are located below the first frame of the coarse adjustment rotary frame, and are used for limiting the maximum angle when the coarse adjustment rotary frame rotates and moves left and right.

[0026] When using the laser motor adjustment device of the present application to perform left and right coarse adjustment operations, adjustment instructions can be output through a portable terminal, such as an application installed on a smart phone, and the instructions are transmitted to the main control board through Bluetooth. The main control board controls the rotation of the second motor, so that the coarse adjustment rotary frame rotates left and right and the fine adjustment base rotates left and right as a whole for left and right adjustment; when performing up and down coarse adjustment, the instructions are transmitted to the main control board through Bluetooth, and the main control board controls the rotation of the first motor, so that the fine adjustment base 25 rotates up and down for adjustment.

[0027] As Figure 4 shown, in some embodiments, a fine adjustment movable plate 50 is provided on the upper surface of the fine adjustment base 25. The fine adjustment movable plate 50 is L-shaped and is arranged above one rotary connecting arm and the connecting plate of the fine adjustment base 25 and is spaced up and down. An adjustable spacing is formed therebetween, and the fine adjustment base 25 and the fine adjustment movable plate 50 are connected and pulled together by a plurality of tension springs 58 arranged at intervals. Preferably, there are four tension springs 58, and two are arranged at intervals along the length direction on the two side plates of the L-shaped fine adjustment movable plate 50. Further, a plane is formed outside the corner of the fine adjustment movable plate 50 to form an avoidance structure above the upper surface of the fine adjustment base 25. A second ball head link universal joint 52 is connected to this plane. A first ball head link universal joint 51 is connected to the position corresponding to the second ball head link universal joint 52 on the upper surface of the fine adjustment base 25. The first ball head link universal joint 51 and the second ball head link universal joint 52 are connected together to form a ball head link universal joint mechanism, and the fine adjustment base 25 and the fine adjustment movable plate 50 are connected through the ball head link universal joint mechanism.

[0028] As Figure 5As shown in the figure, a fine adjustment motor is mounted on the fine adjustment movable plate 50 through a motor bracket, namely the third motor 3 and the fourth motor 4 respectively. The fine adjustment structures of the third motor 3 and the fourth motor 4 are the same. Taking the third motor 3 as an example, the output of the motor is connected to a rotating output arm 60. The rotating output arm 60 is connected to a rotating connecting shaft 61. The rotating connecting shaft 61 is connected to a differential column 63. The differential column 63 is connected to a differential cap 62. They are coaxially connected. The connection between the rotating output arm 60 and the rotating connecting shaft 61 is equivalent to forming a movable coupling. The connection between the differential column 63 and the differential cap 62 is equivalent to forming a differential screw. The differential cap 62 is installed in the mounting hole on the fine adjustment movable plate 50. The motor bracket is fixed on the fine adjustment movable plate 50, and the motor is fixed on the motor bracket.

[0029] Taking the third motor 3 as an example, when the third motor rotates, it drives the rotating output arm 60 to rotate. The rotating output arm 60 coaxially drives the connecting shaft 61 to rotate. The rotating connecting shaft 61 and the differential column 63 rotate together. The differential cap 62 is fixed on the fine adjustment movable plate 50. So when the differential column 63 rotates, its front end will abut against the upper surface of the fine adjustment base 25, thereby adjusting the distance between the fine adjustment base 25 and the fine adjustment movable plate 50, making the distance between the fine adjustment base 25 and the fine adjustment movable plate 50 increase or decrease, thus achieving the fine adjustment of the left and right angles. Because the first ball head link universal joint 51 is connected to the fine adjustment base 25 and the second ball head link universal joint 52 is connected to the fine adjustment movable plate 50, an angle will be formed between them. Therefore, an angle will be formed between the fine adjustment base 25 and the fine adjustment movable plate 50. Similarly, through the adjustment of the fourth motor 4, the fine adjustment can adjust its up and down angles.

[0030] As a preferred embodiment, upper and lower light shielding sheets 56 and left and right limit light shielding sheets 57 are arranged on the fine adjustment base 25. An optoelectronic switch support plate 55 is arranged on an outer side surface of the heat dissipation block 6. A first optoelectronic switch 53 and a second optoelectronic switch 54 are installed thereon. The first optoelectronic switch 53 and the second optoelectronic switch 54 are arranged at both ends in the length direction of the optoelectronic switch support plate 55. And the second optoelectronic switch 54 is arranged inside the fourth frame 24 or the third frame 23, and the first optoelectronic switch 53 is arranged inside the first frame 21 or the fourth frame 24. The first optoelectronic switch 53 is used to cooperate with the left and right limit light shielding sheets 57, and the second optoelectronic switch 54 is used to cooperate with the upper and lower light shielding sheets 56. Through the cooperation of the optoelectronic switch and the limit light shielding sheet or the light shielding sheet, it is convenient to realize the automatic control of the electric adjustment of the laser. The above optoelectronic switch can adopt a U-shaped optoelectronic switch, and the corresponding limit light shielding sheet is located in the U-shaped opening. Since the light shielding sheet is connected to the fine adjustment base, it will move synchronously with the fine adjustment base, realizing the cooperation with the corresponding optoelectronic switch. By detecting the output signal of the optoelectronic switch, the detection of the adjustment position and the automatic control can be realized.

[0031] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For a person skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms.

[0032] Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention.

[0033] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. A person skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by a person skilled in the art.

Claims

1. Laser deflection electric adjustment device, characterized in that, For adjusting the position of the laser spot emitted by the laser lamp, the laser deflection electric adjustment device includes a fine adjustment base, a fine adjustment movable plate installed above the fine adjustment base, and a coarse adjustment rotating frame rotatably installed on a coarse adjustment fixed frame. The fine adjustment base is rotatably installed on the inner wall of the coarse adjustment rotating frame. A first motor for rotating the coarse adjustment rotating frame is provided on the coarse adjustment fixed frame. A second motor for rotating the fine adjustment movable plate is provided on the coarse adjustment rotating frame. Third and fourth motors for adjusting the vertical distance between the fine adjustment movable plate and the fine adjustment base are diagonally arranged on the fine adjustment movable plate. The rotation axis of the fine adjustment base is perpendicular to the axial direction of the rotation axis of the coarse adjustment rotating frame; The fine adjustment base and the fine adjustment movable plate are connected on one side by a ball head link universal joint mechanism. Among them, the first ball head link of the ball head link universal joint mechanism is connected to a position at a corner on the upper surface of the fine adjustment base, and a plane is formed outside the corner of the fine adjustment movable plate, and the second ball head link of the ball head link universal joint mechanism is connected to this plane; The fine adjustment structures of the third and fourth motors are the same, including a rotation output arm, a rotation connecting shaft, a differential column, and a differential cap arranged coaxially and connected in sequence; the rotation output arm is connected to the output shaft of the motor; the differential column and the differential cap are connected to form a differential screw, and the differential cap is installed in the mounting hole on the fine adjustment movable plate; The coarse adjustment fixed frame is formed by a bottom plate and vertical plates arranged at two opposite ends of the bottom plate and on the same side of the bottom plate, generally in a U-shaped structure. A rotation limit screw is installed on each of the two vertical plates for cooperating with the limit groove on the outer side surface of the coarse adjustment rotating frame to achieve the rotation limit of the coarse adjustment rotating frame; Fine adjustment base rotation limit screws are arranged on the frame of the coarse adjustment rotating frame for cooperating with the limit groove on the outer side surface of the fine adjustment base to achieve the rotation limit of the fine adjustment base.

2. The laser deflection electric adjustment device according to claim 1, wherein The laser lamp is installed on a heat sink, and the heat sink is installed on the fine adjustment movable plate.

3. The laser deflection electric adjustment device according to claim 1, characterized in that, The fine adjustment base is formed by connecting two relatively arranged rotation connecting arms through a connecting plate, and is in an overall U shape, horizontally arranged, and the U-shaped opening points to the inside of one frame of the coarse adjustment rotating frame.

4. The laser deflection electric adjustment device according to claim 1, wherein Limit switches for limiting the maximum rotation angle during the rotation adjustment of the coarse adjustment rotating frame and rotation limit switches for limiting the rotation during the rotation of the fine adjustment base are arranged on the inner wall surface of the coarse adjustment rotating frame.

5. The laser deflection electric adjustment device according to claim 1, characterized in that The fine adjustment movable plate is installed above the fine adjustment base through a tension spring and is vertically separated from the fine adjustment base, forming an adjustable distance therebetween.

6. The laser deflection electric adjustment device according to claim 2, characterized in that, Upper and lower light blocking sheets and left and right limit light blocking sheets are arranged on the fine adjustment base. A photoelectric switch support plate is arranged on an outer side surface of the heat sink, and a first photoelectric switch and a second photoelectric switch are installed thereon; the first photoelectric switch is used to cooperate with the left and right limit light blocking sheets, and the second photoelectric switch is used to cooperate with the upper and lower light blocking sheets.

7. The laser deflection electric adjustment device according to claim 1, characterized in that, The first motor, the second motor, the third motor, and the fourth motor are communicatively connected to the main control board. A wireless module is provided on the main control board. Through the wireless module, a laser adjustment instruction output by an application installed on a portable intelligent terminal can be remotely received to control the four motors, thereby realizing remote control and adjustment of the laser.

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