A leveling mechanism applicable to an alignment device and an alignment device

Abstract

The present invention provides a leveling mechanism applicable to an alignment device and an alignment device. The leveling mechanism includes a sealed chamber, a plurality of photoelectric induction transmitters, a plurality of photoelectric induction receivers, a connecting rope, a controller, and an insulating ball. The controller is electrically connected to the photoelectric induction transmitters and the photoelectric induction receivers respectively; the plurality of photoelectric induction transmitters are evenly spaced and arranged on the upper end surface of the sealed chamber, the plurality of photoelectric induction receivers are evenly spaced and arranged on the lower end surface of the sealed chamber, and the plurality of photoelectric induction transmitters respectively correspond to the plurality of photoelectric induction receivers along the height direction of the sealed chamber; the first end of the connecting rope is connected to the upper end surface of the sealed chamber, the second end of the connecting rope is connected to the insulating ball so that the insulating ball can swing in the sealed chamber, and a reference line is defined by the projection line of the first end of the connecting rope along the height direction of the sealed chamber. Applying this technical solution can provide a fast and accurate leveling mechanism.

Description

Technical Field

[0001] The present invention relates to a leveling mechanism applicable to an alignment device and an alignment device. Background Art

[0002] Currently, in construction layout, when high precision requirements are placed on the point position, the method adopted is to use a centering rod in combination with a total station for station setting. Without considering the influence of the external environment, the error of this method mainly comes from the centering error of the centering rod. The reason is that in the surveying and mapping industry, the leveling device used for the centering rod is a circular bubble. This leveling device can only be roughly identified by the naked eye whether it is centered, and there are also certain errors in the operator's observation of the leveling device due to the operator's own level and line of sight obstruction. Especially for high-speed railways where higher precision requirements are placed on the point position and the layout workload is greater, how to quickly and accurately set up the centering rod is a prerequisite for improving the efficiency and precision of high-precision point layout. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art and provide a leveling mechanism applicable to an alignment device and an alignment device.

[0004] To solve the above technical problems, the present invention provides a leveling mechanism applicable to an alignment device, including a sealed chamber, a plurality of photoelectric induction transmitters, a plurality of photoelectric induction receivers, a connecting rope, a controller, and an insulating ball. The controller is electrically connected to the photoelectric induction transmitter and the photoelectric induction receiver respectively; the plurality of photoelectric induction transmitters are evenly spaced and arranged on the upper end surface of the sealed chamber, the plurality of photoelectric induction receivers are evenly spaced and arranged on the lower end surface of the sealed chamber, and the plurality of photoelectric induction transmitters respectively correspond to the plurality of photoelectric induction receivers along the height direction of the sealed chamber; the first end of the connecting rope is connected to the upper end surface of the sealed chamber, and the second end of the connecting rope is connected to the insulating ball so that the insulating ball can swing in the sealed chamber. The projection line of the first end of the connecting rope along the height direction of the sealed chamber defines a reference line;

[0005] When the insulating ball moves or is stationary, it blocks the light beams emitted by one or more of the plurality of photoelectric induction transmitters. The controller determines the movement trajectory of the insulating ball through the blocked photoelectric induction transmitter to determine the position of the center point of the movement trajectory; the leveling mechanism can move to a leveling state. When in the leveling state, the reference line extends along the vertical direction, and the position of the center point of the movement trajectory coincides with the reference line.

[0006] In a better embodiment, when the leveling mechanism is in a non-leveling state, the controller is used to determine the movement difference between the position in the non-leveling state and the reference line.

[0007] In a better embodiment, it further includes a display screen electrically connected to the controller, and the display screen is used to display the movement difference. In a better embodiment, the controller further includes a method for determining the movement difference, and this method includes the following steps:

[0008] (1) Establish a plane coordinate system; determine the first coordinate point of the reference line on the plane coordinate system when the leveling mechanism is in the leveling state;

[0009] (2) By using the insulating ball to block the light beams emitted by different photoelectric induction emitters, determine the second coordinate point of the center position of the movement trajectory on the plane coordinate system when the leveling mechanism is in the non-leveling state;

[0010] (3) Determine the movement difference between the center position of the movement trajectory and the reference line through the first coordinate point and the second coordinate point.

[0011] In a better embodiment, it further includes a power supply; the power supply is used to supply power to the controller, multiple photoelectric induction emitters, multiple photoelectric induction receivers and the display screen.

[0012] In a better embodiment, when the insulating ball moves, it makes a circular motion around the vertical direction.

[0013] The present invention also provides an alignment device, including the leveling mechanism applicable to the alignment device described above; the alignment device includes a support chassis, and the leveling mechanism is located on the support chassis.

[0014] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0015] The insulating ball can swing in the sealed chamber by relying on the connecting rope. As a sealed space, the sealed chamber can isolate the influence of external air flow on the insulating ball, so that the insulating ball makes a circular motion only by gravity. The upper end face of the sealed chamber is provided with photoelectric induction emitters, and the lower end face of the sealed chamber is provided with photoelectric induction receivers. When the insulating ball swings in the sealed chamber, the insulating ball will block the light emitted by one or more of the photoelectric induction emitters. Each of the photoelectric induction emitters has a corresponding position information. The controller can identify the position of the insulating ball through the blocked photoelectric induction. The insulating ball can block multiple photoelectric induction emitters at the same time so that the controller can obtain the coordinate information of the insulating ball.

[0016] The reference line can be understood as a virtual line passing through the first end of the connecting rope and extending along the height direction of the sealed chamber. During the centering process of the centering device, it is necessary to adjust the upright rod so that the upright rod is arranged along the vertical direction (i.e., the direction of gravity); during the adjustment process, the insulating ball will swing in the sealed chamber to make a circular motion, and the controller can determine the position of the center point of the motion trajectory. Therefore, when in the leveling state, the reference line extends along the vertical direction, the position of the center point of the motion trajectory coincides with the reference line, the leveling mechanism is in the leveling state, and the upright rod is arranged along the vertical direction. The leveling mechanism does not need to wait for the insulating ball to stop swinging to determine whether it is in the leveling state, and the determination is fast and accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the centering device in a preferred embodiment of the present invention;

[0018] Figure 2 Schematic diagram of the leveling mechanism in a preferred embodiment of the present invention;

[0019] Figure 3 Schematic diagram of the sealed chamber, photoelectric induction transmitter, photoelectric induction receiver, connecting rope and insulating ball in a preferred embodiment of the present invention;

[0020] Figure 4 Position relationship among the plane rectangular coordinate system, circular projection and reference line in a preferred embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following further describes the present invention in conjunction with the drawings and specific embodiments.

[0022] Refer to Figures 1-4 , a centering device, the centering device includes a support chassis 1, the support chassis 1 includes an upright rod 11 and a foot bracket 12 connected to the upright rod 11, the centering device includes a leveling mechanism 2, and the leveling mechanism 2 is fixedly arranged at the upper end of the upright rod 11.

[0023] The leveling mechanism 2 includes a sealed chamber 21, a plurality of photoelectric induction transmitters 22, a plurality of photoelectric induction receivers 23, a connecting rope 24, a controller, and an insulating ball 26. The controller is electrically connected to the photoelectric induction transmitter 22 and the photoelectric induction receiver 23 respectively; the plurality of photoelectric induction transmitters 22 are evenly spaced and arranged on the upper end surface of the sealed chamber 21, and the plurality of photoelectric induction receivers 23 are evenly spaced and arranged on the lower end surface of the sealed chamber 21. The plurality of photoelectric induction transmitters 22 respectively correspond to the plurality of photoelectric induction receivers 23 along the height direction of the sealed chamber 21; the first end of the connecting rope 24 is connected to the upper end surface of the sealed chamber 21, and the second end of the connecting rope 24 is connected to the insulating ball 26 so that the insulating ball 26 can swing in the sealed chamber 21. The projection line of the first end of the connecting rope 24 along the height direction of the sealed chamber 21 defines a reference line 27; when the insulating ball 26 moves or is stationary, it blocks the light beams emitted by one or more of the plurality of photoelectric induction transmitters 22. The controller determines the movement trajectory of the insulating ball 26 through the blocked photoelectric induction transmitter 22 to determine the position of the center point of the movement trajectory; the leveling mechanism 2 can move to be in a leveling state. When in the leveling state, the reference line 27 extends along the vertical direction, and the position of the center point of the movement trajectory coincides with the reference line 27.

[0024] The insulating ball 26 can swing in the sealed chamber 21 by relying on the connecting rope 24. The sealed chamber 21, as a sealed space, can isolate the influence of external air flow on the insulating ball 26, so that the insulating ball 26 makes a circular motion only by gravity. The upper end surface of the sealed chamber 21 is provided with photoelectric induction transmitters 22, and the lower end surface of the sealed chamber 21 is provided with photoelectric induction receivers 23. In this embodiment, each photoelectric induction transmitter 22 corresponds to a photoelectric induction receiver 23 along the height direction of the sealed chamber 21. When the insulating ball 26 swings in the sealed chamber 21, the insulating ball 26 will block the light rays emitted by one or more of them. Each photoelectric induction transmitter 22 has a corresponding position information. The controller can identify the position of the insulating ball 26 through the blocked photoelectric induction transmitter 22. More specifically, the plurality of photoelectric induction transmitters 22 can be arranged in the form of a plane rectangular coordinate system, that is, evenly spaced along the direction of an X-axis and evenly spaced along the direction of a Y-axis. The insulating ball 26 can block a plurality of photoelectric induction transmitters 22 at the same time so that the controller can obtain the coordinate information of the insulating ball 26.

[0025] The reference line 27 can be understood as a virtual line passing through the first end of the connecting rope 24 and extending along the height direction of the sealed chamber 21. During the centering process of the centering device, it is necessary to adjust the upright rod 11 so that the upright rod 11 is arranged along the vertical direction (i.e., the direction of gravity); during the adjustment process, the insulating ball 26 will swing in the sealed chamber 21 to make a circular motion. Therefore, the insulating ball 26 will form a circular projection t in the plane rectangular coordinate system, and the controller can determine the position of the center point of the motion trajectory (i.e., at the center of the circular projection) based on this circular projection t. The position of the reference line 27 on the plane rectangular coordinate system is fixed. Therefore, when in the leveling state, the reference line 27 extends along the vertical direction, and the position of the center point of the motion trajectory coincides with the reference line 27. At this time, it indicates that the leveling mechanism 2 is in the leveling state and the upright rod 11 is arranged along the vertical direction.

[0026] The leveling mechanism 2 does not need to wait for the insulating ball 26 to stop swinging to determine whether it is in the leveling state, and the determination is fast and accurate.

[0027] When the leveling mechanism 2 is in a non-leveling state, the controller is used to determine the moving difference between the center point position in the non-leveling state and the reference line 27. The position of the center point in the plane rectangular coordinate system can be realized by the insulating ball 26 blocking different photoelectric induction emitters 22. The position of the center point is variable, and the controller can obtain a relatively accurate position. The leveling mechanism 2 further includes a display screen 29 electrically connected to the controller. The display screen 29 is used to display the moving difference, and this moving difference can be presented in the form of coordinates and can be represented in the form of a vector (with a moving direction and a value).

[0028] The leveling mechanism 2 further includes a power supply 28; the power supply 28 is used to supply power to the controller, a plurality of photoelectric induction emitters 22, a plurality of photoelectric induction receivers 23, and the display screen 29.

[0029] The controller further includes a method for determining the moving difference, and this method includes the following steps: (1) Establish a plane coordinate system; determine the first coordinate point of the reference line 27 on the plane coordinate system when the leveling mechanism 2 is in the leveling state; (2) By the insulating ball 26 blocking the light beams emitted by different photoelectric induction emitters 22, determine the second coordinate point of the center point position of the motion trajectory on the plane coordinate system when the leveling mechanism 2 is in the non-leveling state; (3) Determine the moving difference between the center point position of the motion trajectory and the reference line 27 through the first coordinate point and the second coordinate point.

[0030] For example, known data: sensor coordinate P(X in ,Y in); Coordinates (X, Y) of the reference line 27; Radius t of the insulating sphere 26; P refers to the name of the point on the running track affected by external forces; X in , Y in refers to the coordinates of the nth and ith points on the running track. Since the small ball can only be stationary when it is at rest, when adjusting the instrument to be centered, it cannot be accurately centered in one go and requires more than 2 repeated operations to be accurately centered; (X, Y), where X refers to the value of the point on the X-axis in the coordinate system and Y refers to the value of the point on the Y-axis in the coordinate system. (1) The light beam emitted by the photoelectric induction transmitter 22 is parallel to the reference line 27. By the insulating sphere 26 moving to block the coordinate data displayed by different sensors, the coordinate position of the center point of the insulating sphere 26 is deduced, and then the coordinate increments of the reference line 27 and the center point of the insulating sphere 26 are deduced, which are the visible data that needs to be moved. (2) When the insulating sphere 26 moves to block the coordinate data displayed by different sensors, theoretically a circular projection with a radius of t will be formed, and the center coordinates of this circular projection are the center coordinates of the insulating sphere 26. According to the formula The calculated coordinates (X n , Y n ) are the center coordinates of the insulating sphere 26 at the nth time. (3) According to the formula: The distances ΔX and ΔY that the insulating sphere 26 needs to move to the reference line 27 can be calculated. When and only when , the center of the insulating sphere 26 coincides with the reference line 27. Δ min represents that in data statistics, when this value is the smallest, the data can be considered the most accurate.

[0031] As described above, it is only the preferred specific implementation mode of the present invention, but the design concept of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, using this concept to make non-substantive changes to the present invention, shall fall within the scope of infringement of the protection of the present invention.

Claims

1. A leveling mechanism applicable to a centering device, characterized in that It includes an airtight chamber, a plurality of photoelectric induction transmitters, a plurality of photoelectric induction receivers, a connecting rope, a controller and an insulating ball. The controller is electrically connected to the photoelectric induction transmitters and the photoelectric induction receivers respectively; the plurality of photoelectric induction transmitters are evenly spaced and arranged on the upper end surface of the airtight chamber, and the plurality of photoelectric induction receivers are evenly spaced and arranged on the lower end surface of the airtight chamber. The plurality of photoelectric induction transmitters respectively correspond to the plurality of photoelectric induction receivers along the height direction of the airtight chamber; the first end of the connecting rope is connected to the upper end surface of the airtight chamber, and the second end of the connecting rope is connected to the insulating ball so that the insulating ball can swing in the airtight chamber. The projection line of the first end of the connecting rope along the height direction of the airtight chamber defines a reference line. When the insulating ball moves or is stationary, it blocks the light beams emitted by one or more of the plurality of photoelectric induction transmitters. The controller determines the movement trajectory of the insulating ball through the blocked photoelectric induction transmitters to determine the center point position of the movement trajectory; the leveling mechanism can move to a leveling state. When in the leveling state, the reference line extends along the vertical direction, and the center point position of the movement trajectory coincides with the reference line. When the insulating ball moves, it makes a circular motion around the vertical direction.

2. The leveling mechanism for the centering device according to claim 1, characterized in that: When the leveling mechanism is in a non-leveling state, the controller is used to determine the movement difference between the position in the non-leveling state and the reference line.

3. The leveling mechanism for the centering device according to claim 2, characterized in that: It further includes a display screen electrically connected to the controller. The display screen is used to display the movement difference.

4. The leveling mechanism for the centering device according to claim 2 or 3, characterized in that: The controller further includes a method for determining the movement difference. The method includes the following steps: (1) Establish a plane coordinate system; determine the first coordinate point of the reference line on the plane coordinate system when the leveling mechanism is in the leveling state. (2) By the insulating ball blocking the light beams emitted by different photoelectric induction transmitters, determine the second coordinate point of the center point position of the movement trajectory on the plane coordinate system when the leveling mechanism is in the non-leveling state. (3) Determine the movement difference between the center point position of the movement trajectory and the reference line through the first coordinate point and the second coordinate point.

5. The leveling mechanism for the centering device according to claim 3, characterized in that: It further includes a power supply; the power supply is used to supply power to the controller, the plurality of photoelectric induction transmitters, the plurality of photoelectric induction receivers and the display screen.

6. An alignment device, characterized in that: It includes a leveling mechanism for a centering device as described in any one of claims 1-5; the centering device includes a support chassis, and the leveling mechanism is located on the support chassis.

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