Tripod and measuring device

Abstract

Provided are a tripod and a measuring device that can be easily carried. The tripod comprises a main leg (5), a connecting member (6) provided on the main leg, two auxiliary legs (7) provided on the connecting member and freely rotatable in directions approaching and moving away from the main leg with the upper end thereof as the center, and wheels (15) provided at the lower portions of the auxiliary legs; when the main leg and the auxiliary legs are closed, the main leg and the auxiliary legs are tilted toward the auxiliary legs so that only the wheels can be brought into contact with the ground.

Description

Technical Field

[0001] The present invention relates to a tripod and a measuring device that can be easily installed. Background Art

[0002] In recent years, measuring devices have become smaller and lighter, and measuring methods are also required to perform measurements in a short time while moving between many measuring points.

[0003] However, when setting up a measuring device at a reference point, a tripod is typically used for setup, but the device needs to be leveled on the tripod. Furthermore, a plumb bob or centripetal telescope is required for positioning, ensuring that the device's mechanical center is located on a plumb line passing through the reference point. Furthermore, the height from the reference point to the mechanical center (the device height of the measuring device) must be measured. Therefore, setting up the measuring device is cumbersome and requires time and skill.

[0004] Furthermore, tripods are made of wood or aluminum, which makes them heavy and rigid, making them difficult to move. Furthermore, if a large-capacity battery or a high-performance computing system is installed in the measuring device, the weight increases, making it even more difficult to move the measuring device.

[0005] Prior art literature

[0006] Patent Literature

[0007] Patent Document 1: Japanese Patent Application Publication No. 2019-90770

[0008] Patent Document 2: Japanese Patent Application Laid-Open No. 2016-161411

[0009] Patent Document 3: Japanese Patent Application Laid-Open No. 2016-151422

[0010] Patent Document 4: Japanese Patent Application Laid-Open No. 2017-106813

[0011] Patent Document 5: Japanese Patent Application Publication No. 2019-15601

[0012] Patent Document 6: Japanese Patent Application Laid-Open No. 2016-151423 Summary of the Invention

[0013] Problems to be solved by the invention

[0014] The present invention provides a tripod capable of easily carrying a measuring device and the measuring device.

[0015] Means used to solve problems

[0016] The present invention relates to a tripod comprising: a main leg, a connecting member arranged on the main leg, two auxiliary legs arranged on the connecting member and freely rotating in directions approaching and moving away from the main leg with the upper end portion as the center, and wheels respectively arranged at the lower parts of the auxiliary legs; when the main leg and the auxiliary legs are in a closed state, by tilting the main leg and the auxiliary legs toward the auxiliary legs, only the wheels can be brought into contact with the ground.

[0017] Furthermore, in the tripod of the present invention, the axle of the wheel is eccentric with respect to the axis of the auxiliary leg in a direction away from the main leg.

[0018] Furthermore, in the tripod of the present invention, the axis of the axle of the wheel is perpendicular to the axis of the auxiliary leg.

[0019] Furthermore, in the tripod of the present invention, when the auxiliary legs are opened at a predetermined angle, only the lower ends of the main legs and the auxiliary legs come into contact with the installation surface, forming a gap between the installation surface and the wheels.

[0020] Furthermore, in the tripod of the present invention, the lower end of the main leg is located below the lower end of the auxiliary leg and the lower end of the wheel.

[0021] Furthermore, in the tripod of the present invention, when the auxiliary legs are closed, the wheels are configured to be parallel to each other.

[0022] In the tripod of the present invention, a main guide member is provided at a midpoint of the main leg, and a sub-guide member is provided at a midpoint of the auxiliary leg. The main guide member and the sub-guide member are connected by a restriction member.

[0023] In addition, the tripod of the present invention further includes an auxiliary leg fixing member provided in the middle of the main leg. The auxiliary leg fixing member has a storage portion capable of holding the auxiliary leg. When the auxiliary leg is closed, the auxiliary leg is held in the storage portion.

[0024] Furthermore, the present invention relates to a measuring device comprising: the above-mentioned tripod; a fixing member provided at the upper end of the tripod; and a measuring device body provided on the fixing member at a known distance from the lower end of the main leg and at a known angle relative to the axis of the main leg, and having a reference optical axis; the measuring device body comprising: a distance measuring unit for emitting distance measuring light to measure the distance to a measurement object; an emission direction detection unit for detecting the emission direction of the distance measuring light; and a posture detector for detecting the inclination of the measuring device body relative to the horizontal; the measuring device comprising a calculation control unit for calculating the three-dimensional coordinates of a predetermined measurement point with respect to a reference point based on a distance measurement result of the distance measuring unit, a measurement result of the emission direction detection unit, and a detection result of the posture detector.

[0025] Effects of the Invention

[0026] According to the present invention, it comprises: a main leg, a connecting member, which is arranged on the main leg, two auxiliary legs, which are arranged on the connecting member and can freely rotate in the direction of approaching and moving away from the main leg with the upper end portion as the center, and wheels, which are respectively arranged at the lower part of the auxiliary legs; when the main leg and the auxiliary legs are closed, by tilting the main leg and the auxiliary legs in the direction of the auxiliary legs, only the wheels can be brought into contact with the ground. Since it is constructed in the above manner, only the wheels can be brought into contact with the setting surface without significantly tilting the main leg, and it can be easily carried.

[0027] Furthermore, according to the present invention, the tripod comprises: a fixing member provided at an upper end of the tripod; and a measuring device body provided on the fixing member at a known distance from the lower end of the main leg and at a known angle relative to the axis of the main leg, and having a reference optical axis; the measuring device body comprises: a distance measuring unit for emitting distance measuring light to measure the distance to a measurement object; an emission direction detecting unit for detecting the emission direction of the distance measuring light; and a posture detector for detecting the inclination of the measuring device body relative to the horizontal; the measuring device comprises a calculation control unit for calculating the three-dimensional coordinates of a predetermined measuring point with reference to a reference point based on a distance measurement result of the distance measuring unit, a measurement result of the emission direction detecting unit, and a detection result of the posture detector; the measuring device can be brought into contact with a mounting surface by only the wheels without significantly tilting the tripod, thereby achieving the excellent effect of being able to easily transport the measuring device body. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram showing a measuring device according to a first embodiment of the present invention.

[0029] Figure 2 (A) is a front view showing a state where the tripod is closed. Figure 2 (B) is from Figure 2 The view when viewed in the direction of the X arrow in (A).

[0030] Figure 3 (A) is a side view showing the tripod when it is closed and the main leg is vertical. Figure 3 (B) shows the Figure 3 A side view showing the state in which the main leg is tilted until the wheel contacts the installation surface from the state (A). Figure 3 (C) shows the Figure 3 A side view showing the state in which the main leg is tilted from the state (B) until the lower end of the main leg is separated from the installation surface.

[0031] Figure 4 It is a front view showing a case where the tripod is opened.

[0032] Figure 5 (A) is a side view showing the tripod when it is closed and the main leg is vertical. Figure 5 (B) shows the Figure 5 A side view showing the auxiliary legs opened from the state (A). Figure 5 (C) shows the Figure 5 The state (B) is a side view showing a state in which the lower ends of the main legs and the auxiliary legs are in contact with the installation surface respectively.

[0033] Figure 6 This is a schematic block diagram showing the main body of a measuring device according to the first embodiment of the present invention.

[0034] Figure 7 (A) to (D) are explanatory diagrams illustrating how an operator carries the measuring device.

[0035] Figure 8 is a side view of a tripod according to a second embodiment of the present invention, Figure 8 (A) shows the situation where the tripod is closed and the main leg is vertical. Figure 8 (B) shows the Figure 8 In the case of (A), the main leg is tilted until the wheel contacts the installation surface. Figure 8 (C) is from Figure 8 The main leg is tilted from the state (B) until the lower end of the main leg is separated from the installation surface.

[0036] Description of Reference Numerals

[0037] 1: Measuring device,

[0038] 2: Tripod,

[0039] 4: Measuring device body,

[0040] 5: main foot,

[0041] 6: Connectors,

[0042] 7: Auxiliary foot,

[0043] 8: foot spikes,

[0044] 9: Main guide component,

[0045] 11: auxiliary guide member,

[0046] 12: Restriction components,

[0047] 15: Wheel. DETAILED DESCRIPTION

[0048] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0049] Figure 1 、 Figure 2 A measuring device according to a first embodiment of the present invention is shown.

[0050] The measuring device 1 includes a tripod 2 , a fixing member 3 provided at the upper end of the tripod 2 , and a measuring device body 4 fixedly mounted on the tripod 2 via the fixing member 3 .

[0051] The tripod 2 includes a main leg 5 and two auxiliary legs 7 connected to the main leg 5 via a connector 6. A foot spike 8 is provided at the lower end of the main leg 5, and the fixing member 3 is provided at the upper end of the main leg 5. Furthermore, a main guide member 9 is provided on the main leg 5, which slides along the main leg 5. The shapes of the main leg 5, the auxiliary legs 7, and the main guide member 9 can be selected as appropriate, but a cylindrical shape is used in this embodiment.

[0052] The spike 8 is tapered, with a pointed lower end. The lower end of the spike 8 coincides with the axis of the main leg 5, and the positional relationship (horizontal and vertical distances) between the lower end of the spike 8 and the upper end of the main leg 5 is known. Furthermore, the positional relationship between the lower end of the spike 8 and the fixture 3 is known, as is the positional relationship between the lower end of the spike 8 and the mechanical center (the point serving as the measurement reference) of the measuring device body 4, which is fixedly mounted on the fixture 3. In other words, the measuring device body 4 is positioned at a known angle relative to the axis of the main leg 5.

[0053] The auxiliary legs 7 are rotatably connected to the connector 6 about their upper ends, allowing them to rotate at a predetermined angle in the approaching and separating directions relative to the main legs 5. Each auxiliary leg 7 is formed at a desired angle and radially spread. Furthermore, each auxiliary leg 7 includes a secondary guide member 11 fixedly positioned at a predetermined position. The shape of this secondary guide member 11 can be appropriately selected depending on the intended use of the auxiliary leg 7, but a cylindrical shape is employed in this embodiment.

[0054] The main guide member 9 is connected to each auxiliary guide member 11 via a rod-shaped restriction member 12, and the restriction member 12 is rotatable relative to the main guide member 9 and the auxiliary guide member 11. When the auxiliary leg 7 is closed, the main guide member 9 slides upward along the main leg 5. When the auxiliary leg 7 is opened, the main guide member 9 slides downward along the main leg.

[0055] At this time, since the main guide member 9 and the secondary guide member 11 are connected via the limiting member 12, the limiting member 12 restricts the auxiliary leg 7 from rotating relative to the main leg 5 in the direction away from the main leg 5 by more than a predetermined angle. In other words, the limiting member 12 facilitates the tripod 2 from reaching a predetermined opening. Furthermore, the limiting member 12 need not be rod-shaped. For example, the limiting member 12 can be configured as a chain or rope. In this case, the main guide member 9 is fixedly mounted relative to the main leg 5.

[0056] Furthermore, wheel mounting members 13 are provided below the auxiliary legs 7. The wheel mounting members 13 protrude in a direction away from the auxiliary legs 7, and wheels 15 are rotatably mounted to the front ends of the wheel mounting members 13 via axles 14 (described later).

[0057] Furthermore, the axle 14 (rotation center) of the wheel 15 is eccentric with respect to the axis of the auxiliary leg 7 in a direction away from the main leg 5. When the auxiliary leg 7 is closed, the two wheels 15 become concentric and parallel.

[0058] The measuring device body 4 includes a distance measuring unit 17 (described later) serving as an optical distance meter and a measurement direction imaging unit 18 (described later). The reference optical axis of the optical system of the distance measuring unit 17 is the reference optical axis O. The optical axis of the measurement direction imaging unit 18 (hereinafter referred to as imaging optical axis 19) is tilted upward at a predetermined angle (e.g., 6°) relative to the reference optical axis O. Furthermore, the distance and positional relationship between the measurement direction imaging unit 18 and the distance measuring unit 17 are known. The distance measuring unit 17 and the measurement direction imaging unit 18 are housed within the housing of the measuring device body 4.

[0059] Then, in Figures 2 to 5 , the tripod 2 is further described.

[0060] An auxiliary leg fixing member 21 is provided midway along the main leg 5. The auxiliary leg fixing member 21 includes an arm portion 22 extending at a desired angle in a direction away from the auxiliary leg 7, and a semicircular receiving portion 23 is formed at the front end of the arm portion 22.

[0061] When the auxiliary leg 7 is closed, it is housed in the housing portion 23. When housed in the housing portion 23, the auxiliary leg 7 is held by the auxiliary leg securing member 21 via a predetermined mechanism such as a magnet. Alternatively, the housing portion 23 may be made of a flexible material such as resin, and the auxiliary leg 7 may be fitted into the housing portion 23 while being bent.

[0062] The lower end of the foot spike 8 is located below the lower end of the auxiliary foot 7 and the lower end of the wheel 15. Figure 2 (A) or Figure 3 As shown in (A) in FIG, when the main leg 5 is vertical, a gap of a predetermined distance A is formed between the installation surface and the lower end of the auxiliary leg 7 and between the installation surface and the lower end of the wheel 15. Figure 2 In (A), the position of the lower end of the auxiliary leg 7 is the same as the position of the lower end of the wheel 15, but the respective positions may be different.

[0063] In addition, if Figure 3 As shown in (B) of FIG. 1 , when the main leg 5 is tilted at a predetermined angle C toward the eccentricity of the wheel 15 (toward the auxiliary leg) with the auxiliary leg 7 closed, the foot spike 8 and the two wheels 15 come into contact with the mounting surface. At this point, a predetermined gap is formed between the lower end of the auxiliary leg 7 and the mounting surface.

[0064] Moreover, if Figure 3 As shown in (C), Figure 3 When the main leg is further tilted at a predetermined angle D in state (B), the main leg 5 and the auxiliary leg 7 rotate about the ground contact point of the wheel 15. This causes the foot spike 8 to separate from the mounting surface, leaving only the wheel 15 in contact with the mounting surface. In this case, a predetermined gap is formed between the auxiliary leg 7 and the mounting surface.

[0065] The angle formed between the axis of the main leg 5 and the vertical is made smaller than the predetermined angle C, so that the wheel 15 is separated from the installation surface. Figure 5 (A) in the figure), the auxiliary legs 7 are opened to a predetermined angle E (see Figure 5(B)), the main leg 5 is tilted at a predetermined angle F so that the tripod 2 can stand independently by three-point support (refer to Figure 5 (C) in, such as Figure 4 、 Figure 5 As shown in (C) in FIG. 1 , the lower ends of the foot spikes 8 and the lower ends of the two auxiliary legs 7 are in contact with the installation surface. At this time, a gap of a predetermined distance B is formed between the wheel 15 and the installation surface, and the wheel 15 is separated from the installation surface.

[0066] Reference Figure 6 , a schematic structure of the measuring device main body 4 will be described. In addition, as the measuring device main body 4, for example, the device disclosed in Patent Document 1 can be used.

[0067] The measuring device body 4 has the distance measuring unit 17, the calculation control unit 24, the storage unit 25, the image processing unit 26, the communication unit 27, the optical axis deflection unit 28, the posture detector 29, the measurement direction shooting unit 18 and the emission direction detection unit 31, which are housed in the shell 32 and integrated.

[0068] The distance measuring unit 17 and the optical axis deflecting unit 28 are arranged on the reference optical axis O. The distance measuring unit 17 has a distance measuring optical axis 33 that passes through the center of the optical axis deflecting unit 28. The distance measuring unit 17 emits distance measuring light 34, which is a laser beam, along the distance measuring optical axis 33, receives reflected distance measuring light 35 incident from the distance measuring optical axis 33, and measures the object to be measured based on the reflected distance measuring light 35. Furthermore, the distance measuring unit 17 functions as an optical distance meter. Distance measurement data obtained by the distance measuring unit 17 is stored in the storage unit 25.

[0069] The optical axis deflecting unit 28 deflects the distance measuring optical axis 33 to collimate the distance measuring light 34 toward the measurement object. When the optical axis deflecting unit 28 does not deflect the distance measuring optical axis 33, the distance measuring optical axis 33 coincides with the reference optical axis O.

[0070] As the laser beam, any of continuous light, pulsed light, or intermittently modulated distance measuring light (burst light) disclosed in Patent Document 2 can be used. Pulsed light and intermittently modulated light are collectively referred to as pulsed light.

[0071] The communication unit 27 is capable of sending image data obtained by the measurement direction shooting unit 18, image data processed by the image processing unit 26, distance measurement data obtained by the distance measurement unit 17, and angle measurement data obtained by the emission direction detection unit 31 to a terminal device such as a smartphone or tablet (not shown).

[0072] The storage unit 25 stores various programs, including a photography control program, an image processing program, a distance measurement program, a display program, a communication program, a tilt angle calculation program, a correction program for correcting the orientation of a captured image based on the calculated tilt, a measurement program for performing distance measurement, a deflection control program for controlling the deflection operation of the optical axis deflection unit 28, and a calculation program for performing various calculations. The tilt angle calculation program calculates the tilt angle and tilt direction of the main leg 5 based on the posture detection results from the posture detector 29, and further calculates the vertical component of the tilt angle (the tilt angle of the main leg 5 in the front-to-back direction relative to the measurement object) and the horizontal component of the tilt angle (the tilt angle of the main leg 5 in the left-to-right direction relative to the measurement object). The storage unit 25 also stores various data, including distance measurement data, angle measurement data, and image data.

[0073] The calculation control unit 24 develops and executes the various programs based on the operating status of the measurement device body 4 to control the distance measuring unit 17, the optical axis deflection unit 28, and the measurement direction imaging unit 18, thereby performing distance measurement. In this device, a dedicated CPU or a general-purpose CPU is used as the calculation control unit 24.

[0074] Furthermore, various storage devices such as an HDD (a magnetic storage device), a built-in memory (a semiconductor storage device), a memory card, and a USB memory can be used as the storage unit 25. The storage unit 25 may be detachable from the housing 32. Alternatively, the storage unit 25 may be capable of transmitting data to an external storage device or an external data processing device via a desired communication unit.

[0075] The optical axis deflecting unit 28 will be described. As the optical axis deflecting unit 28, for example, the components disclosed in Patent Documents 3 to 5 can be used.

[0076] The optical axis deflecting unit 28 includes a pair of optical prisms 36 and 37. Each of the optical prisms 36 and 37 is in the shape of a circular plate having the same diameter. They are arranged concentrically and perpendicularly to the distance measuring optical axis 33 and parallel to the distance measuring optical axis 33 at a predetermined interval. By controlling the relative rotation of the optical prisms 36 and 37 and their integrated rotation, the distance measuring optical axis 33 can be deflected to any angle from 0° to a maximum deflection angle.

[0077] Furthermore, by continuously driving and deflecting the optical prisms 36 and 37 while continuously irradiating the distance measuring light 34 , the distance measuring light 34 can be two-dimensionally scanned in a predetermined pattern.

[0078] The emission direction detection unit 31 detects the relative rotation angle between the optical prisms 36 and 37 and the integral rotation angle of the optical prisms 36 and 37 , and detects the deflection direction (emission direction) of the distance measurement optical axis 33 in real time.

[0079] The emission direction detection result (angle measurement result) is associated with the distance measurement result and input to the calculation control unit 24, and then stored in the storage unit 25. When the distance measurement light 34 is bursted, distance measurement and angle measurement are performed for each intermittent distance measurement light.

[0080] The calculation control unit 24 calculates the horizontal angle and vertical angle of the measurement point relative to the reference optical axis O based on the deflection angle and emission direction of the ranging light 34. Furthermore, by associating the horizontal angle and vertical angle of the measurement point with the ranging data, the calculation control unit 24 can calculate the three-dimensional data (three-dimensional coordinates) of the measurement point. Furthermore, the measuring device body 4 functions as a total station. Furthermore, by using the measuring device 1 as a total station, alignment and distance measurement of the measurement object can be performed without changing the position of the imaging optical axis 19, thereby improving operability.

[0081] The attitude detector 29 detects the tilt angle of the measuring device body 4 relative to the horizontal or vertical direction, and the detection result is input to the calculation control unit 24. As the attitude detector 29, the attitude detection device disclosed in Patent Document 6 can be used.

[0082] The calculation control unit 24 calculates the tilt angle of the main leg 5 in the front-to-back direction (the tilt angle in the direction of approaching and moving away from the measurement object) and the tilt angle of the main leg 5 in the left-to-right direction based on the detection results from the posture detector 29. The tilt angle in the front-to-back direction is expressed as the tilt angle of the reference optical axis O with respect to the horizontal, and the tilt angle in the left-to-right direction is expressed as the tilt (rotation) of the image obtained by the measurement direction imaging unit 18.

[0083] The calculation control unit 24 calculates the inclination angle of the distance measurement optical axis 33 relative to the horizontal based on the inclination angle and the deflection angle of the optical axis deflection unit 28. Furthermore, the image processing unit 26 creates a vertical image based on the image inclination. The created vertical image is stored in the storage unit 25 or transmitted to a terminal device via the communication unit 27.

[0084] The measurement direction imaging unit 18 is a camera having a field of view of, for example, 50° to 60°, which is approximately equal to the maximum deviation angle θ / 2 (e.g., ±30°) of the optical prisms 36 and 37. The relationship between the imaging optical axis 19, the distance measurement optical axis 33, and the reference optical axis O is known, and the distance between the optical axes is also known.

[0085] Furthermore, the measurement direction imaging unit 18 can capture still images, continuous images, or dynamic images in real time. The image (observation image) captured by the measurement direction imaging unit 18 is transmitted to an operating unit (not shown). The operator can observe the observation image displayed on the operating unit and perform measurement operations. The center of the observation image coincides with the imaging optical axis 19, and the reference optical axis O is positioned offset by a predetermined field of view angle relative to the center of the observation image based on a known relationship with the imaging optical axis 19.

[0086] The calculation control unit 24 controls the imaging of the measurement direction imaging unit 18. When the measurement direction imaging unit 18 captures the moving image or continuous image, the calculation control unit 24 synchronizes the timing of obtaining the frame images constituting the moving image or continuous image with the timing of scanning and distance measurement by the measurement device body 4. Furthermore, when the measurement direction imaging unit 18 captures a still image, the calculation control unit 24 synchronizes the timing of obtaining the still image with the timing of scanning by the measurement device body 4. The calculation control unit 24 also associates the image with the measurement data (distance measurement data, angle measurement data).

[0087] The imaging element (not shown) of the measurement direction imaging unit 18 is a CCD or CMOS sensor, which is a collection of pixels. The position of each pixel on the image element can be determined. For example, each pixel has pixel coordinates with the imaging optical axis 19 as its origin, and its position on the image element is determined by these pixel coordinates. Furthermore, because the relationship (distance) between the imaging optical axis 19 and the reference optical axis O is known, the measurement position of the distance measuring unit 17 can be associated with a position (pixel) on the imaging element. The image signal from the imaging element and the coordinate information associated with the pixels are input to the image processing unit 26 via the calculation and control unit 24.

[0088] The deflection action and scanning action of the optical axis deflecting unit 28 will be described.

[0089] The optical axis deflecting unit 28 can arbitrarily change the deflection direction and deflection angle of the emitted distance measuring light 34 by combining the rotational positions of the optical prism 36 and the optical prism 37 .

[0090] Therefore, by changing the deflection angle while emitting the laser beam from the distance measuring unit 17 and rotating the optical axis deflecting unit 28 , the distance measuring light 34 can be scanned in an arbitrary two-dimensional pattern.

[0091] Next, refer to Figure 7 , the measurement by the measuring device 1 will be described. Note that the following measurement is performed by the calculation control unit 24 executing a program stored in the storage unit 25 .

[0092] When the auxiliary legs 7 are opened (see Figure 7 (A) in the figure), first, the main leg 5 is tilted and the wheel 15 is separated from the installation surface, and then the auxiliary leg 7 is closed and fixed by the auxiliary leg fixing member 21 (refer to Figure 7 (B) in the figure.

[0093] When the auxiliary leg 7 is closed, the main leg 5 is tilted so that the foot spike 8 is separated from the installation surface, thereby achieving a state in which only the wheel 15 is in contact with the installation surface (see FIG. Figure 7 In this state, the operator pushes or pulls the measuring device 1 and moves it to the approximate position of the reference point R.

[0094] At this time, since the auxiliary legs 7 are closed, the distance between the two wheels 15 becomes shorter. That is, the rotation radius becomes smaller, so the tripod 2 can be rotated at the minimum radius, and the direction of the tripod 2 can be easily changed (see Figure 7 (D) in the.

[0095] When the measuring device 1 is moved to the approximate position of the reference point R, the main leg 5 is tilted so that the reference optical axis O faces the measured object and the lower end of the foot spike 8 is aligned with the reference point R. Then, the main leg 5 is further tilted so that the wheel 15 is separated from the installation surface (see Figure 7 (B) in the figure.

[0096] Finally, the auxiliary leg 7 is opened until it is restricted by the restriction member 12, and the main leg 5 is tilted so that the auxiliary leg 7 contacts the installation surface (refer to Figure 7 (A) in the figure). At this point, the wheel 15 is separated from the installation surface. Thus, with the main leg 5 tilted at a predetermined angle, the measuring device 1 is supported at three points by the main leg 5 and the two auxiliary legs 7. Furthermore, the measurement direction imaging unit 18 is in operation, allowing the measuring device 1 to be installed.

[0097] Once the measuring device 1 is installed, the observation image obtained by the measurement direction imaging unit 18 can be displayed on a terminal device, and the direction and position of the reference optical axis O can be confirmed based on the observation image. The inclination angle and inclination direction of the main leg 5 at this time are detected by the posture detector 29.

[0098] With the direction of the reference optical axis O determined, the measurable deflection range centered on the reference optical axis O can be confirmed on the observation image. The operator can designate any point within the measurable range in the observation image as a measurement point (measurement object). Upon designating the measurement point, the calculation control unit 24 uses the optical axis deflection unit 28 to direct the distance measurement optical axis 33 toward the measurement object.

[0099] The distance measuring optical axis 33 is directed toward the measurement point, irradiating the distance measuring light 34 to perform measurement (distance and angle measurement) of the measurement point. The direction of the distance measuring light 34 and the distance measurement results are displayed on the terminal device. Furthermore, the measurement direction imaging unit 18 captures an image in synchronization with the measurement of the measurement point.

[0100] Furthermore, the inclination of the measuring device 1 relative to the horizontal is detected in real time by the attitude detector 29. Therefore, even if the main leg 5 is tilted, the measurement results of the measuring device 1 can be corrected to those based on the reference point R based on the detection results of the attitude detector 29. In other words, the calculation control unit 24 can calculate the three-dimensional coordinates of the measurement points based on the reference point R. This eliminates the need for leveling the measuring device 1.

[0101] In the above description, measurement is performed with the distance measuring optical axis 33 fixed at the measuring point in the same manner as a total station. However, measurement can also be performed using the surveying device 1 as a laser scanner that performs two-dimensional scanning.

[0102] Furthermore, by associating an observation image with data along a trajectory obtained by two-dimensional scanning, an image having three-dimensional data for each pixel can be obtained.

[0103] To move the measuring device 1 again, similarly to the above, after the wheels 15 are moved away and the auxiliary legs 7 are closed, the lower ends of the foot spikes 8 are moved away from the installation surface, and the wheels 15 are rotated to transport the measuring device 1 from the reference point R to another installation point. After transport, with the lower ends of the foot spikes 8 aligned with the other installation point and the wheels 15 moved away, the auxiliary legs 7 are opened, achieving three-point support using the main legs 5 and the two auxiliary legs 7.

[0104] As described above, in the first embodiment, the wheels 15 are provided on the two auxiliary legs 7, and the measuring device 1 is moved via the wheels 15. Therefore, even if the measuring device body 4 is heavy due to the installation of a large-capacity battery and a high-performance computing system, or even if the tripod 2 itself is heavy, the measuring device 1 can be easily moved without placing a burden on the operator.

[0105] Furthermore, the axle 14 of the wheel 15 is eccentric relative to the axis of the auxiliary leg 7 in the direction in which the auxiliary leg 7 is separated from the main leg 5. Therefore, the wheel 15 can be brought into contact with the installation surface without excessively tilting the main leg 5, thereby improving operability when moving the measuring device 1.

[0106] Furthermore, when the auxiliary legs 7 are extended, only the main legs 5 and the auxiliary legs 7 are in contact with the installation surface, and the wheels 15 are separated from the installation surface. Therefore, since the measuring device 1 is supported at three points by the main legs 5 and the two auxiliary legs 7, the stability of the tripod 2 can be improved.

[0107] Furthermore, the main leg 5 is longer than the auxiliary leg 7. That is, the lower end of the foot spike 8 is located below the lower ends of the auxiliary leg 7 and the wheel 15. Therefore, simply by making the main leg 5 vertical or substantially vertical, the wheel 15 can be moved away from the installation surface, making it easy to open and close the auxiliary leg 7 without excessively tilting the main leg 5.

[0108] Furthermore, when the auxiliary legs 7 are closed, the two wheels 15 become parallel. Therefore, the movement of the measuring device 1 becomes easy and the rotation radius becomes small, so there is no need to provide a separate rotation mechanism on the tripod 2.

[0109] Furthermore, the main leg 5 and the auxiliary leg 7 are connected via the restricting member 12, and the auxiliary leg 7 cannot be opened beyond a predetermined angle by the restricting member 12. Therefore, the auxiliary leg 7 can always be opened at the same angle, which can improve the operability during installation.

[0110] Furthermore, the auxiliary leg fixing member 21 is provided on the main leg 5. When the auxiliary leg 7 is closed, the auxiliary leg fixing member 21 can maintain the closed state of the auxiliary leg 7, thereby preventing the auxiliary leg 7 from accidentally opening during transportation.

[0111] Then, in Figure 8 (A)~ Figure 8 In (C) of FIG. 1 , a second embodiment of the present invention is described. Figure 8 (A)~ Figure 8 In (C), for Figure 3 (A)~ Figure 3 The same components in (C) are marked with the same reference numerals, and their descriptions are omitted.

[0112] In the second embodiment, a wheel 15 is mounted on the auxiliary leg 7 via a wheel mounting member 13 so that the axis of the auxiliary leg 7 is orthogonal to the axis of the axle 14. In other words, the axle 14 is not eccentric in the direction in which the auxiliary leg 7 approaches or separates from the main leg 5. The remaining structure is the same as in the first embodiment.

[0113] like Figure 8 As shown in (A), in the case of the second embodiment, the main leg 5 is also first made vertical, and the auxiliary leg 7 is closed, so that a gap is formed at a specified distance A between the setting surface and the lower end of the auxiliary leg 7 and between the setting surface and the lower end of the wheel 15.

[0114] like Figure 8 As shown in (B) in FIG. 1 , from this state, the main leg 5 is tilted at a predetermined angle G toward the eccentric direction of the wheel 15 (the direction of the auxiliary leg), so that the two wheels 15 are in contact with the installation surface. Figure 8 As shown in (C), the main leg 5 is further tilted at a predetermined angle H, whereby the main leg 5 and the auxiliary leg 7 rotate around the installation point of the wheel 15. This allows the foot spike 8 to separate from the installation surface, so that only the wheel 15 is in contact with the installation surface.

[0115] In the second embodiment, the measuring device 1 (cf. Figure 1 ) moves, so even if the measuring device body 4 (refer to Figure 1 ) or even if the tripod 2 has weight, the measuring device 1 can be easily moved without placing a burden on the operator.

[0116] In addition, the predetermined angle G is greater than the predetermined angle C (refer to Figure 3 Therefore, a handle or the like that extends upward only when the wheels 15 are in contact with the ground may be provided separately, and the tripod 2 may be moved via the handle.

Claims

1. A tripod, characterized in that: have: main foot, A connecting member is provided on the main foot, Two auxiliary legs are provided on the connecting member and are free to rotate in directions of approaching and moving away from the main legs with the upper end as the center; and wheels, respectively arranged at the lower part of the auxiliary legs; In a state where the main leg and the auxiliary leg are closed, by tilting the main leg and the auxiliary leg toward the auxiliary leg, only the wheel can be brought into contact with the ground. When the main leg and the auxiliary leg are closed and the main leg is vertical, the lower end of the main leg is located below the lower end of the auxiliary leg and the lower end of the wheel.

2. The tripod according to claim 1, wherein: The axle of the wheel is eccentric with respect to the axis of the auxiliary leg in a direction away from the main leg.

3. The tripod according to claim 1, wherein: The axis of the wheel axle is perpendicular to the axis of the auxiliary foot.

4. The tripod according to claim 1, wherein: When the auxiliary leg is opened at a predetermined angle, only the lower ends of the main leg and the auxiliary leg come into contact with the installation surface, and a gap is formed between the installation surface and the wheel.

5. The tripod according to claim 2, wherein: When the auxiliary leg is opened at a predetermined angle, only the lower ends of the main leg and the auxiliary leg come into contact with the installation surface, and a gap is formed between the installation surface and the wheel.

6. The tripod according to claim 3, wherein: When the auxiliary leg is opened at a predetermined angle, only the lower ends of the main leg and the auxiliary leg come into contact with the installation surface, and a gap is formed between the installation surface and the wheel.

7. The tripod according to any one of claims 1 to 6, characterized in that: When the auxiliary foot is closed, the wheels are parallel.

8. The tripod according to any one of claims 1 to 6, characterized in that: A main guide member is provided at a midway portion of the main leg, and a sub-guide member is provided at a midway portion of the auxiliary leg. The main guide member and the sub-guide member are connected by a restriction member.

9. The tripod according to claim 7, wherein: A main guide member is provided at a midway portion of the main leg, and a sub-guide member is provided at a midway portion of the auxiliary leg. The main guide member and the sub-guide member are connected by a restriction member.

10. The tripod according to any one of claims 1 to 6, characterized in that: The auxiliary leg fixing member is provided at a midway portion of the main leg. The auxiliary leg fixing member has a storage portion capable of holding the auxiliary leg. When the auxiliary leg is closed, the auxiliary leg is held in the storage portion.

11. The tripod according to claim 7, wherein: The auxiliary leg fixing member is provided at a midway portion of the main leg. The auxiliary leg fixing member has a storage portion capable of holding the auxiliary leg. When the auxiliary leg is closed, the auxiliary leg is held in the storage portion.

12. The tripod according to claim 8, wherein: The auxiliary leg fixing member is provided at a midway portion of the main leg. The auxiliary leg fixing member has a storage portion capable of holding the auxiliary leg. When the auxiliary leg is closed, the auxiliary leg is held in the storage portion.

13. The tripod according to claim 9, wherein: The auxiliary leg fixing member is provided at a midway portion of the main leg. The auxiliary leg fixing member has a storage portion capable of holding the auxiliary leg. When the auxiliary leg is closed, the auxiliary leg is held in the storage portion.

14. A measuring device, characterized in that: have: The tripod according to any one of claims 1 to 13, A fixing member is provided at the upper end of the tripod, and a measuring device body, arranged on the fixing member at a known distance from the lower end of the main leg and at a known angle relative to the axis of the main leg, and having a reference optical axis; The measuring device body has: The distance measuring unit emits distance measuring light to measure the distance to the object being measured. an emission direction detection unit for detecting the emission direction of the distance measuring light, and a posture detector for detecting an inclination of the measuring device body relative to the horizontal, The measuring device includes a calculation control unit that calculates three-dimensional coordinates of a predetermined measurement point based on a reference point based on a distance measurement result of the distance measuring unit, a measurement result of the emission direction detection unit, and a detection result of the posture detector.

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