Laser measurement receiver rotating shaft device and measurement method thereof

Abstract

The invention belongs to the technical field of measurement, and particularly relates to a laser measurement receiver rotating shaft device and a measurement method thereof. A supporting rod is arranged on the seat plate; the rotating device is arranged on the supporting rod, and the rotating device can be installed on the supporting rod in the forward direction and the reverse direction; the laser transmitter is arranged on the outer side of the to-be-measured bearing, and the laser transmitter emits light to the axis of the to-be-measured bearing; the measuring device is arranged on the rotating device, the measuring device can perform rotary measurement through the rotating device, and the measuring device comprises an L-shaped folded plate seat; the L-shaped folded plate seat is provided with a laser receiver, the laser receiver is used for receiving light emitted by the laser emitter, the laser receiver is provided with a detection assembly, and the detection assembly can abut against the inner surface of the aperture of the bearing to be detected. The rotating device can be installed on the supporting rod in the forward direction and the reverse direction, the rotating device can be adjusted to be arranged in front of or behind the laser receiver according to the position condition of the base plate in the rotating shaft to be measured, and measurement is more flexible.

Description

Technical Field

[0001] The invention belongs to the field of measurement technology, and in particular relates to a laser measurement receiver shaft device and a measurement method thereof. Background Art

[0002] During ship construction and maintenance, it is often necessary to measure the shaft straightness of the stern tube bearing hole of the rudder system ship to check whether the actual bearing axis straightness meets the design value and operation requirements.

[0003] When a laser instrument is used to measure an axis, a laser transmitter is placed at one end of the axis, and a laser receiver is placed at each aperture position on the axis. When the detector rod feeler of the receiver touches the inner surface of the aperture, the sensing panel of the receiver forms a "sensing point" facing the incident laser beam. When the receiver is centered on the rotating shaft and the detector rod feeler evenly measures around the aperture surface, a fitting circle composed of lines connecting multiple "sensing points" is formed. The center of the fitting circle is the center of the measured aperture, and the relative position of the center of the circle and the reference axis in the radial direction is the actual offset value of the aperture.

[0004] In the actual measurement process, the laser receiver must always face the laser transmitter, and the shaft is set on the back of the receiver. The shaft seat is fixed to the base plate of the device through a support rod. The base plate has a certain width in the axial direction of the hole. When the far end surface of the base plate (the one close to the laser transmitter is the near end, and the one far away from the laser transmitter is the far end) is flush with the far end surface of the shaft hole, the laser receiver detection rod touch foot is restricted by the width of the base plate. At this time, there is still a distance from the far end surface of the hole to the center of the aperture that has not been measured. For details, Figure 1 If this distance is longer, the aperture of the unmeasured position will have a greater impact on the judgment of the axis condition. Summary of the invention

[0005] The object of the present invention is to provide a laser measurement receiver shaft device and a measurement method thereof, aiming to solve the technical problems existing in the above-mentioned prior art.

[0006] To achieve the above-mentioned purpose, the embodiment of the present invention provides a laser measuring receiver shaft device and a measuring method thereof, which are used to check whether the actual straightness of the bearing axis meets the design value and operation requirements, and comprises a seat plate; the seat plate is provided with a support rod;

[0007] A rotating device, which is arranged on the support rod, and the rotating device can be installed on the support rod in forward and reverse directions;

[0008] A laser transmitter, which is arranged outside the bearing to be tested, and emits light toward the axis of the bearing to be tested;

[0009] A measuring device is arranged on the rotating device. Through the rotating device, the measuring device can perform rotational measurement. The measuring device includes an L-shaped folding plate seat; a laser receiver is arranged on the L-shaped folding plate seat, and the laser receiver is used to receive the light emitted by the laser transmitter. A detection component is arranged on the laser receiver, and the detection component can touch the inner surface of the aperture of the bearing to be measured.

[0010] Optionally, the laser receiver is provided with a receiving panel, and the receiving panel is aligned with the laser transmitter.

[0011] Optionally, the rotating device includes a needle bearing seat; a needle bearing is arranged in the needle bearing seat, and a hollow rotating shaft is passed through the needle bearing.

[0012] Optionally, a lock nut is provided at one end of the hollow rotating shaft.

[0013] Optionally, the L-shaped folding plate seat is detachably arranged on the front side of the hollow rotating shaft.

[0014] Optionally, the detection assembly includes a guide rod and a connecting plate; the guide rod passes through the L-shaped folding plate seat and is connected to the laser receiver, the connecting plate is slidably disposed on the guide rod, and the connecting plate is provided with a detection rod.

[0015] Optionally, a spring is provided on the guide rod, and the spring is provided between the L-shaped folding plate seat and the connecting plate.

[0016] Optionally, there are two guide rods.

[0017] Optionally, a strong magnetic column is also provided at the bottom of the seat plate.

[0018] Optionally, the measuring method of the laser measurement receiver shaft device is characterized in that it includes the following steps: S1 fixing a laser transmitter to the outside of the bearing to be measured so that the laser transmitter emits light toward the axis of the bearing to be measured; S2 installing a laser receiver facing the laser transmitter in front of or behind the hollow shaft; S3 touching the inner surface of the aperture of the bearing to be measured with the detection rod, and forming a sensing point for the receiving panel facing the incident laser beam; S4 taking the hollow shaft as the center, making the detection rod evenly measure around the aperture surface for one circle, thereby forming a fitting circle composed of connecting lines of multiple sensing points, the center of the fitting circle is the center of the measured aperture, and the relative position of the center and the reference axis in the radial direction is the actual offset value of the aperture.

[0019] Compared with the prior art, the above one or more technical solutions in the high sealing measurement provided by the embodiment of the present invention have at least one of the following technical effects:

[0020] The rotating device can be installed on the support rod in the forward and reverse directions. The rotating device can be adjusted to be placed in front of or behind the laser receiver according to the position of the seat plate in the rotating shaft to be measured. The measurement is more flexible and solves the problem of being restricted by the width of the seat plate. At this time, the laser receiver detection rod touches the far end surface of the hole, and there is still a distance from the center of the aperture that has not been measured, so the measurement result is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 This is a reference diagram for the background technology of the present invention.

[0023] Figure 2 It is a schematic diagram of the structure in which the rotating device of the present invention is arranged behind the laser receiver.

[0024] Figure 3 It is a schematic diagram of the structure in which the rotating device of the present invention is arranged in front of the laser receiver.

[0025] Among them, the reference numerals in the figure are:

[0026] 100, seat plate; 110, support rod;

[0027] 200. Laser transmitter;

[0028] 300, laser receiver; 310, receiving panel;

[0029] 400, bearing to be tested;

[0030] 510, L-shaped folding plate seat; 520, guide rod; 530, connecting plate; 540, detection rod; 550, spring;

[0031] 610, needle roller bearing seat; 620, needle roller bearing; 630, hollow shaft; 640, lock nut;

[0032] 700. Strong magnetic column. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, examples of which 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 intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0034] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0037] In one embodiment of the present invention, according to Figure 1-3 As shown, a laser measuring receiver shaft device and a measuring method thereof are used to check whether the actual straightness of the bearing axis meets the design value and operation requirements, including a seat plate 100; a support rod 110 is provided on the seat plate 100;

[0038] A rotating device, which is disposed on the support rod 110, and the rotating device can be installed on the support rod 110 in a forward and reverse direction;

[0039] A laser emitter 200, which is disposed outside the bearing 400 to be tested, and emits light toward the axis of the bearing 400 to be tested;

[0040] The measuring device is arranged on the rotating device. Through the rotating device, the measuring device can perform rotational measurement. The measuring device includes an L-shaped folding plate seat 510; a laser receiver 300 is arranged on the L-shaped folding plate seat 510, and the laser receiver 300 is used to receive the light emitted by the laser transmitter 200. The laser receiver 300 is provided with a detection component, and the detection component can touch the inner surface of the aperture of the bearing 400 to be measured.

[0041] Specifically, the rotating device can be installed on the support rod 110 in the forward and reverse directions. According to the position of the seat plate 100 in the rotating shaft to be measured, the rotating device can be adjusted to be placed in front of or behind the laser receiver 300. The measurement is more flexible and solves the problem of being restricted by the width of the seat plate 100. At this time, the laser receiver 300 detection rod 540 touches the far end surface of the hole, and there is still a distance from the center of the aperture that has not been measured. The measurement result is more accurate.

[0042] Furthermore, the seat plate 100 does not affect the rotation and radial telescopic movement of the laser receiver 300 and the measuring device.

[0043] In another embodiment of the present invention, according to Figure 1 and 2 As shown, the laser receiver 300 is provided with a receiving panel 310, and the receiving panel 310 is aligned with the laser transmitter 200. Specifically, the receiving panel 310 can receive the laser emitted by the laser transmitter 200, and display a light spot on the receiving panel 310.

[0044] In another embodiment of the present invention, according to Figure 2 As shown, the rotating device includes a needle bearing seat 610; a needle bearing 620 is arranged in the needle bearing seat 610, and a hollow shaft 630 is passed through the needle bearing 620. A lock nut 640 is arranged at one end of the hollow shaft 630. The L-shaped folding plate seat 510 is detachably arranged on the front side of the hollow shaft 630.

[0045] Specifically, when the rotating device is adjusted to the front of the laser receiver 300, the shaft hole of the hollow shaft 630 facilitates laser transmission. Because the diameter of the hollow hole is larger than the receiver panel, the receiver panel can normally receive the irradiated laser beam, which solves the disadvantage that the solid shaft cannot transmit. Furthermore, the needle bearing 620 is used to ensure radial constraint when the shaft rotates, and improve the centering accuracy of the hollow shaft 630 when rotating.

[0046] It can be understood that when the rotating device is installed on the support rod 110 in the forward direction, the L-shaped folding plate seat 510 is set in the forward position, and the laser receiver 300 is set in front of the rotating device; when the rotating device is installed on the support rod 110 in the reverse direction, the L-shaped folding plate seat 510 is set in the reverse position, and the laser receiver 300 is set behind the rotating device.

[0047] In another embodiment of the present invention, according to Figure 2As shown, the detection assembly includes a guide rod 520 and a connecting plate 530; the guide rod 520 passes through the L-shaped folding plate seat 510 and is connected to the laser receiver 300, the connecting plate 530 is slidably arranged on the guide rod 520, and a detection rod 540 is arranged on the connecting plate 530. A spring 550 is arranged on the guide rod 520, and the spring 550 is arranged between the L-shaped folding plate seat 510 and the connecting plate 530. There are two guide rods 520. Specifically, the guide rod 520 is connected to the detection rod 540 through the connecting plate 530, and the extension length of the detection rod 540 can adjust its extension amount according to the aperture size. In order to facilitate measurement, a spring 550 is installed on the guide rod 520, and the tension of the spring 550 can make the detection rod 540 have a stable top contact pre-tightening force to reduce the uneven force when the hand is tightened.

[0048] In another embodiment of the present invention, according to Figure 2 and 3 As shown, a strong magnetic column 700 is also provided at the bottom of the seat plate 100. Specifically, the strong magnetic column 700 can provide stable adsorption support, the strong magnetic column 700 itself has strong adsorption to steel metal, and the column length is optional. Placing it on a specially designed base can provide it with stable adsorption support to prevent it from tipping over or moving.

[0049] In another embodiment of the present invention, according to Figure 1-3 As shown, the measuring method of the laser measuring receiver shaft device is characterized in that it includes the following steps: S1 fixes the laser transmitter 200 to the outside of the bearing 400 to be measured, so that the laser transmitter 200 emits light to the axis of the bearing 400 to be measured; S2 installs the laser receiver 300 in front of or behind the hollow shaft 630 facing the laser transmitter 200; S3 touches the detection rod 540 to the inner surface of the aperture of the bearing 400 to be measured, and the receiving panel 310 forms a sensing point facing the incident laser beam; S4 takes the hollow shaft 630 as the center, makes the detection rod 540 evenly measure around the aperture surface for one circle, and forms a fitting circle composed of connecting lines of multiple sensing points, and the center of the fitting circle is the center of the measured aperture, and the relative position of the center and the reference axis in the radial direction is the actual offset value of the aperture.

[0050] The above content is a further detailed description of the present invention in combination with specific preferred implementation methods, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, without departing from the concept of the present invention, its architecture can be flexible and can derive a series of products. Just making a few simple deductions or substitutions should be regarded as belonging to the scope of patent protection of the present invention determined by the submitted claims.

Claims

1. A laser measuring receiver shaft device, used to check whether the actual bearing axis straightness meets the design value and operating requirements, characterized in that: It comprises a seat plate; the seat plate is provided with a support rod; A rotating device, which is arranged on the support rod, and the rotating device can be installed on the support rod in forward and reverse directions; A laser transmitter, which is arranged outside the bearing to be tested, and emits light toward the axis of the bearing to be tested; A measuring device is arranged on the rotating device. Through the rotating device, the measuring device can perform rotational measurement. The measuring device includes an L-shaped folding plate seat; a laser receiver is arranged on the L-shaped folding plate seat, and the laser receiver is used to receive the light emitted by the laser transmitter. A detection component is arranged on the laser receiver, and the detection component can touch the inner surface of the aperture of the bearing to be measured.

2. The laser measurement receiver shaft device according to claim 1, characterized in that: The laser receiver is provided with a receiving panel, and the receiving panel is aligned with the laser transmitter.

3. The laser measurement receiver shaft device according to claim 2, characterized in that: The rotating device comprises a needle bearing seat; a needle bearing is arranged in the needle bearing seat, and a hollow rotating shaft is passed through the needle bearing.

4. The laser measurement receiver shaft device according to claim 3, characterized in that: A lock nut is provided at one end of the hollow rotating shaft.

5. The laser measurement receiver shaft device according to claim 3, characterized in that: The L-shaped folding plate seat is detachably arranged on the front side of the hollow rotating shaft.

6. The laser measurement receiver shaft device according to claim 1, characterized in that: The detection assembly includes a guide rod and a connecting plate; the guide rod passes through the L-shaped folding plate seat and is connected to the laser receiver, the connecting plate is slidably arranged on the guide rod, and the connecting plate is provided with a detection rod.

7. The laser measurement receiver shaft device according to claim 6, characterized in that: The guide rod is provided with a spring, and the spring is arranged between the L-shaped folding plate seat and the connecting plate.

8. The laser measurement receiver shaft device according to claim 6, characterized in that: The number of the guide rods is two.

9. The laser measurement receiver shaft device according to claim 1, characterized in that: A strong magnetic column is also provided at the bottom of the seat plate.

10. The measuring method of the laser measuring receiver shaft device according to any one of claims 1 to 9, characterized in that: The steps include: S1: fixing a laser transmitter on the outer side of the bearing to be tested, so that the laser transmitter emits light toward the axis of the bearing to be tested; S2. Install the laser receiver in front of or behind the hollow shaft facing the laser transmitter; S3: The detection rod touches the inner surface of the aperture of the bearing to be tested, and the receiving panel faces the incident laser beam to form a sensing point; S4 takes the hollow rotating shaft as the center and makes the detection rod evenly circle around the aperture surface to form a fitting circle composed of lines connecting multiple sensing points. The center of the fitting circle is the center of the measured aperture, and the relative position of the center and the reference axis in the radial direction is the actual offset value of the aperture.

Images