KR101531025B1 - Apparatus for protecting tripod in geodetic survey - Google Patents

Abstract

The present invention relates to a device for protecting a tripod during a geodetic survey. The device for protecting the tripod comprise: an instrument mount including a top support, three legs the top ends of which are rotatably combined to the top support and which are able to spread or gather together, and a measurement instrument combined to the top support; an inclination sensing unit installed in the instrument mount to sense an inclination of the instrument mount; an instrument mount horizontality maintaining means which automatically maintains the horizontal status of the instrument mount according to an inclination sensing signal of the inclination sensing unit; a control unit installed inside a control box mounted on the bottom surface of the top support; and a power supply unit which supplies power to the inclination sensing unit, instrument mount horizontality maintaining means, and control unit. When a user spreads the legs and installs the tripod on the ground, the top surface of the instrument mount is automatically set to be horizontal by the instrument mount horizontality maintaining means, and the measurement instrument, when it is mounted on the instrument mount, is set to be horizontal. In addition, the device for protecting the tripod enables the user to carry out the geodetic survey easily and quickly by allowing the user to easily and rapidly adjust the height of the instrument mount. In addition, the device includes an observation point tuning means for setting the center of the instrument mount to correspond with the observation point, thereby facilitating more an accurate geodetic survey.

Description

[0001] The present invention relates to a tripod protection apparatus for a geodetic survey,

The present invention relates to a tripod protection apparatus for geodetic surveying, and more specifically, it is possible to quickly and easily adjust the height of a tripod on which a surveying instrument is mounted during a geodetic survey, and also to mount the tripod on a horizontally- Even when the measuring instrument is mounted, the upper surface of the instrument mount automatically supports the legs landed on the ground so that the measuring instrument can be leveled by simply mounting the measuring instrument on the instrument mount after the tripod is installed. The present invention relates to a tripod protection device for a geodetic surveying which enables a surveying operation to be carried out quickly and the center of the device mount is precisely matched to a viewpoint so that accurate geodetic surveying can be performed.

Control Point is a point where the location, elevation, etc. installed by the Geographical Information Service are displayed. It is narrowly defined as triangulation point, level point (Bench Mark), integrated reference point (integrated standard And Unified Control Points), and broadly includes gravity point, magnetic point, and the like.

The triangulation point is a national reference point that already knows its location through triangulation. It is a known point of public surveying that provides criteria related to precise positioning of land shape, boundary, area, and design and construction of various facilities ). In addition, the triangulation points have a uniform distribution in the whole country and they constitute a triangulation network of grades. By embedding a granite surveying mark at the points, it provides map, latitude, height, , And cadastral surveying are used as reference data for the plane positioning of all surveying. Today, GPS measurement methods using satellites are widely used. The triangulation point is located at the top of the mountain, about 2.5 ~ 20km apart in the whole country, and classified according to accuracy.

The level point is a reference point where a permanent pile is precisely measured from the level origin to establish a permanent pile, and the elevation is registered in the level survey scorecard of the National Geographic Information Institute so that it can be used for level survey in the vicinity. At present, the level point of Korea is based on the average sea level of Incheon Bay. Based on this, we stake out the level origin in Yonghyun - dong, Nam - gu, Incheon city and precisely determine its elevation. The elevation value of this level origin is 26.6871m. In addition, we have installed a leveling point around the national highway. The first level point is about 4km and the second level point is about 2km apart.

The integrated reference point is a multidimensional and multifunctional reference point that can be integrated into various surveying areas such as geodetic, intellectual, level, and gravity by installing and operating on a flat land. Provides integrated management and provision of latitude (horizontal position), height (vertical position), and gravity, and serves as an image reference point.

Surveying is a technique of finding the position to know by measuring various angles and distances using various tools. Its position is usually expressed in three-dimensional coordinates. Surveying is a technique to measure the distance, direction and height, which are the three elements of surveying, by using various methods and techniques, to determine the necessary position and to express the position as a unified coordinate.

Triangulation is a method of determining the plane position of the reference points based on the theory of trigonometry by measuring the baselines and angles of the triangles constituting the triangles by connecting the reference points (triangles) to each other by constructing triangles.

Level measurement refers to the position determined in the space of the earth in three dimensional space and divided into the plane position and the vertical position. The flattening position is represented by a flat rectangular coordinate, and the vertical position is represented by an elevation.

Integrated reference point survey refers to the survey conducted to determine the geographical latitude, altitude and gravity value of the integrated reference point by performing GPS survey, level survey, and gravity survey based on the integrated reference point network based on multiple satellite reference points It says.

Integrated reference point network refers to a network composed of a plurality of unit polygons and satellite reference points formed at uniform density throughout the country by the integrated reference point.

In these various types of surveying, measurement equipment such as a leveling unit, a transit, and a total station installed on a tripod at the viewpoint and a skeleton installed at a reference point are used.

The requirement for such a tripod is that it must be firmly grounded on the ground, able to safely support the surveying instrument without falling easily by wind or external strikes, and to be able to level the measuring instrument.

Conventional metering tripods are composed of three legs, an upper frame that rotatably supports the upper ends of the legs, and a measuring device device mount coupled to the upper part of the upper frame and mounted with a measuring device.

The legs are configured to be adjustable in length with an upper leg and a lower leg, and the upper end of the upper leg is rotatably connected to the upper meridian so that the legs can be opened and closed.

In addition, one end of the strut is rotatably connected to the lower end of the upper leg, and the other end of each strut is rotatably connected to the connecting end so that when the strut is wedged, it is in parallel with the legs. Legs.

The device mount is rotatably coupled horizontally and vertically to the upper earth just to allow horizontal alignment of the device mount.

However, since the conventional tripod for measurement needs to adjust the level of the measuring instrument installed on the upper surface while rotating the apparatus mount horizontally and vertically with reference to the upper support from the state where the leg is landed on the ground, There is a problem that it takes a lot of time to adjust and the efficiency of the surveying work is lowered.

In order to adjust the height of the measuring instrument, the conventional tripod for measurement needs to adjust the length of the upper leg and the lower leg with respect to the three legs composed of the upper leg and the lower leg, and then fix the upper leg and the lower leg again In addition, after the height adjustment is completed, the horizontal adjustment operation of the surveying instrument must be performed again, so that the troublesome operation, the time required and the efficiency of the surveying operation are deteriorated.

Therefore, it is necessary to develop a tripod protection device for the geodetic surveying, which enables the height of the equipment mount on which the surveying instrument is mounted and the horizontal of the measurement instrument mount on which the surveying instrument is mounted to be adjusted quickly, easily and accurately, have.

In addition, when the tripod is installed, the center of the device mount must be exactly aligned with the observation point. In the past, since the number of machines is equal to the number of machines and the center of the device mount coincides with the observation point, .

Therefore, it is necessary to develop a tripod protection device for the geodetic surveying that allows the center of the device mount to be precisely matched to the viewpoint.

Korea Utility Model Registration No. 20-0372260 (Registered on December 28, 2004) "Tripod for Zip Stereo Survey" Korea Patent Registration No. 10-0288885 (Registered Feb. 12, 2001) "Tripod for surveying equipment"

It is therefore an object of the present invention to provide an apparatus and method for measuring the distance between a measuring instrument and a measuring instrument, which can quickly and simply adjust the height of a tripod on which the measuring instrument is mounted, By supporting the legs landed on the ground so that the top surface automatically maintains the horizontal position, the measurement apparatus can be leveled simply by mounting the measuring instrument on the instrument mount after the tripod is installed, so that the tripod installation and surveying operation can be performed quickly. Is to be precisely matched to the observation point so that accurate geodetic surveying is possible.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems and needs, and it is an object of the present invention to provide an apparatus and a method for assembling the apparatus, which comprises a top support, three legs pivotably connected to the top support, A device mount on which a surveying instrument is mounted; An inclination detecting means installed on the apparatus mount for detecting the inclination of the apparatus mount; A device mount height adjusting and level maintaining means for automatically maintaining the device mount in a horizontal state in accordance with a tilt detection signal of the tilt detecting means and adjusting the height of the device mount; A control unit incorporated in a control box mounted on a lower surface of the upper support; Power supply means for supplying power to the inclination detecting means, the device mount horizontal holding means, and the control unit; And viewpoint matching means for making the center of the device mount exactly coincide with a viewpoint,

Wherein the upper support comprises three hinge portions each having a hinge hole for rotatably connecting the upper end of the leg at an equal interval,

The hinge unit includes a hinge unit corresponding to the hinge unit and having a hinge part having a hinge hole corresponding to the hinge hole and an upper leg connecting part integrally formed at a lower portion of the hinge part and having an upper leg connecting groove, An upper leg having a pair of upper leg members which are inserted into the upper leg connecting grooves of the hinge member in a spaced manner with a space therebetween and slidably inserted between the pair of upper leg members; A leg connecting ring fixed to a lower end of the upper leg member and configured to allow a lower leg to pass therethrough, and a lower leg connected to the upper leg member, And a leg coupling screw having a leg coupling screw which is in close contact with an outer surface of the lower leg member,

The inclination detecting means includes an inclination detecting sensor mounted on the device mount and sensing an inclination of the device mount with respect to a direction from the center of the device mount to each leg,

The device mount horizontal holding means includes a motor main body fixedly coupled to an inner surface of a lower leg member of the lower leg constituting each leg so that a central axial line thereof is parallel to the lower leg member, A driving screw rotatable in a forward and reverse direction with a rotary shaft having a female screw portion formed on an inner circumferential surface thereof, a drive screw having a male screw portion screwed to the female screw portion of the rotary shaft and a landing portion formed at a lower end thereof, And a rotation preventing mechanism for preventing the drive screw from rotating,

The control unit is installed inside the control box mounted on the lower surface of the upper support,

The power supply means includes a battery module mounted on a lower surface of the upper support and supplying power to a drive motor of the tilt sensor and the device mount horizontal holding means of the tilt sensor, And a height adjustment switch for adjusting the height of the device mount by turning on and off the power of the battery module,

The observation point matching means comprises a vertical bar vertically fixed at the center of the device mount, a viewpoint landing rod spaced downward from the lower end of the vertical rod and having a viewpoint landing section at the lower end thereof, And a spring housing which surrounds the compression spring and whose upper end is fixed to a lower end of the vertical rod.

According to a third aspect of the present invention, there is provided a tripod protection device comprising: a top support; three legs rotatably coupled to the top support to open and close; A leg supporting means for supporting the legs in a widened state and an apparatus mount horizontal holding means for automatically holding the apparatus mount in a horizontal state, so that when the leg is landed on the ground, , The upper surface of the device mount is held horizontally, and the trip device is supported by the leg supporting means, and then the measuring device is mounted on the device mount, the measurement device is kept horizontal so that the tripod can be installed and surveyed quickly There is an effect that can be done.

1 to 10 show a preferred embodiment of a tripod protection apparatus for the geodetic surveying according to the present invention,
1 is an exploded perspective view,
FIG. 2 is a perspective view showing a state in which a leg is folded,
3 is a perspective view showing a state in which a leg is opened,
4 and 5 are perspective views showing a process of installing a tripod on a ground,
Fig. 4 is a perspective view showing a state where a tripod with its legs is landed on an inclined ground,
5 is a perspective view showing a state in which it is automatically held horizontally,
6 and 7 are longitudinal side views showing a process of installing a tripod on a ground,
Fig. 6 is a longitudinal side view showing a state where a tripod having a leg is landed on a tilted ground,
7 is a longitudinal side view showing a state in which it is automatically held horizontally,
FIGS. 8 and 9 are longitudinal side views showing a height adjustment and a horizontal adjustment process of the tripod,
8 is a longitudinal side view showing a state in which the height is adjusted to a high level,
FIG. 9 is a longitudinal side view showing a state of being level-adjusted after height adjustment,
10 is a block diagram showing a tilt detection sensor, a control unit, and a drive motor.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of a tripod protection device in a geodetic surveying according to the present invention will be described in detail with reference to the accompanying drawings.

In the following description, a hole through which a bolt or a screw is inserted and a screw hole through which a bolt or a screw is fastened are merely shown in the drawings, and the reference numerals and explanations are omitted.

As shown in FIGS. 1 to 8, the tripod protection device in the geodetic surveying according to the present invention includes an upper support 10 having three hinge parts 11 at 120-degree intervals in a plan view; Three legs 20A, 20B, and 20C that are installed so that the upper end is pivotally coupled to the hinge portion 11 of the upper supporter 10 so as to be opened and closed; A device mount 30 provided above the upper support 10 to mount the measuring device; An inclination detecting means (40) installed on the device mount (30) and detecting the inclination of the device mount (30); An apparatus mount horizontal holding means (50) for automatically maintaining the apparatus mount (30) in a horizontal state in accordance with a tilt detection signal of the tilt detecting means (40); A control unit 60 incorporated in a control box 61 mounted on a lower surface of the upper support 10; A power supply means 70 for supplying power to the inclination detecting means 40, the device mount horizontal holding means 50 and the control unit 60; And viewpoint matching means (80) for making the center of the device mount (30) exactly coincide with the viewpoint.

The hinge portion 11 of the upper support 10 is provided with a hinge hole 11a for pivotally connecting the upper ends of the legs 20A, 20B and 20C.

The top support 10 is formed in an equilateral triangular shape in which the vertex portions are rounded.

The legs 20A, 20B and 20C correspond to the hinge portions 11 and include a hinge portion 22 provided with a hinge hole 22a corresponding to the hinge hole 11a, A hinge member 21 having an upper leg connecting portion 23 integrally formed with the upper leg connecting groove 23a and a lower leg connecting portion 23 having an upper leg connecting portion 23a inserted into the hinge holes 11a, And an upper leg 25 provided with a pair of upper leg members 25a which are inserted into the upper leg connecting grooves 23a of the hinge member 21 at intervals and spaced apart from each other, A lower leg 26 having a lower leg member 26a slidably inserted between the pair of upper leg members 25a and a lower leg 26a fixed to a lower end of the upper leg member 25a, 26) are threadedly engaged with the leg linking ring (27a) to penetrate any one of the upper leg members (25a) Is configured to include an outer surface bridged thread (27b) is provided with a foot coupler 27 are in close contact with the end of the lower leg member (26a).

The upper leg member 25a is formed in a circular cross section and the lower leg member 26a is formed in a shape having both side circular arc surfaces corresponding to the outer peripheral surface of the upper leg member 25a, It is preferable that the lower leg members 26a are slidable without any disengagement between the pair of upper leg members 25a by the two side circular arc surfaces of the lower leg members 26a.

The upper leg member 25a and the lower leg member 26a are preferably formed in a pipe shape to minimize the weight of the entire tripod.

A finishing cap 26b is coupled to the upper end of the lower leg member 26a. The finishing cap 26b has an insertion portion 26c inserted into the upper end of the lower leg member 26a formed in the pipe shape and a lower end portion 26c corresponding to the outer shape of the lower leg member 26a at the upper end of the insertion portion 26c And a finishing portion 26d formed so as to have an outer shape. The finishing cap 26b may be fixedly coupled to the upper end of the lower leg member 26a by inserting the insertion portion 26c into the upper end of the lower leg member 26a, The screw 26e passing through the upper end of the lower leg member 26a may be fastened to the finishing cap 26b by fastening.

The leg linking ring 27a is formed in a long circular shape or a long cylindrical shape that surrounds the lower end of the upper leg member 25a and is provided with a nut portion 27c for fastening the leg engagement screw 27b. The nut portion 27c can be formed by inserting a nut in the process of molding the leg linking ring 27a into a synthetic resin.

It is preferable that the leg engagement screw 27b is a butterfly screw having a butterfly knob to be able to rotate without a separate tool.

The device mount 30 is formed in an equilateral triangular shape in which the vertex portions are rounded corresponding to the upper supporter 10 and is mounted on a line connecting the vertexes at the same distance, It is preferable to use an instrument mount provided with three measuring instrument mounting holes 31. [ However, one of the existing device mounts can be selected according to the type of the measurement apparatus to be mounted.

A plurality of (three in the figure) fixed screws 32 passing through the device mount 30 are mounted on the upper support frame 10 while the lower surface of the device mount 30 is in close contact with the upper surface of the upper support frame 10. [ And can be fixedly coupled to the upper support table 10 by fastening it on the upper surface.

The inclination detecting means 40 includes an inclination detecting means 40 installed on the device mount 30 and detecting an inclination of the device mount 30 with respect to a direction from the center of the device mount 30 toward the respective legs 20A, 20B, And a detection sensor 41.

The inclination detection sensor 41 may be housed in a sensor receiving groove 42 formed on the upper surface of the device mount 30. The sensor receiving groove 42 may be configured to be opened and closed by a lid 43.

The device mount horizontal holding means 50 is configured such that the center axis of the device mount horizontal holding means 50 is supported by the lower leg members 26a on the inner side surfaces of the lower leg members 26a of the lower legs 26 constituting the respective legs 20A, 20B, (51A, 51B) provided with a rotary shaft (53) having an internal threaded portion (53a) formed on an inner peripheral surface thereof and rotatably mounted on the motor body (52) A driving screw 54 having a male screw portion 54a screwed to the female screw 53a of the rotary shaft 53 and a fixing portion 54b formed at the lower end thereof; And a rotation preventing mechanism 55 installed between the upper end of the driving screw 54 and the driving screw 54 to prevent the driving screw 54 from rotating.

Stators, rotors, and the like provided in the driving motors 51A, 51B, and 51C are conventional ones, and therefore, illustration and description thereof are omitted. The driving motors 51A, 51B and 51C are denoted by the same reference numerals for the sake of description, and the constituent elements of the driving motors 51A, 51B and 51C are the same, Respectively.

The engaging pieces 56 are mounted on the lower leg members 26a and the engaging pieces 56 and the lower leg members 26a are fastened to the lower leg members 26a in order to fix the driving motors 51A, 51B, 51C to the lower leg members 26a. It is possible to fasten the coupling screw 56a passing through the motor main body 52 to the coupling portion 52a formed on the side surface of the motor main body 52. [

The rotation preventing mechanism 55 is fixed to the upper end of the motor main body 52 and includes an elevating guide hole 55b through which the driving screw 54 passes and is guided by the elevating guide hole 55b, A key guide groove 55d formed in the longitudinal direction on the outer circumferential surface of the drive screw 54 and a key guide groove 55d formed in the key fixing groove 55c, And a key 55e into which the other half portion is slidably inserted into the key guide groove 55d.

The controller 60 is configured to drive the drive motors 51A, 51B, and 51C individually according to a tilt detection signal of the tilt sensor 41 (see FIG. 8).

The control unit 60 may be installed inside the control box 61 mounted on the lower surface of the upper support frame 10.

The power supply means 70 is mounted on the lower surface of the upper support table 10 so that the inclination detection sensor 41 of the inclination detection means 40 and the drive motors 51A, 51B, 51C of the device mount horizontal holding means 50 A horizontal adjustment switch 72 for adjusting the horizontal position of the device mount 30 by turning the power of the battery module 71 on and off, And a height adjustment switch 73 for adjusting the height of the device mount 30 by turning on and off the power of the device mount 30.

The battery module 71 may be installed at a position not related to the control box 60, or may be mounted on the lower surface of the control box 60.

The horizontal adjustment switch 72 and the height adjustment switch 73 are configured such that the switch knobs 72a and 73a protrude outward through the upper support rods 10 respectively.

The horizontal adjustment switch 72 is configured to operate the switch knob 72a in an off state and an on state. When the switch knob 72a is turned off, the inclination angle sensor 41 and the controller 60 The power source of the battery module 71 is turned off and the switch knob 72a is turned on so that the power of the battery module 71 for the inclination sensor 41 and the controller 60 is supplied, And the controller (60) operate to adjust the horizontal position of the device mount (30).

The height adjustment switch 73 is configured to operate the switch knob 73a in the off state, the up mode and the down mode. When the switch knob 73a is turned off, the battery module 51B and 51C are simultaneously rotated reversely under the control of the control unit 60 so that the female screw portion 53a of the rotary shaft 53 is rotated And the screw portion 54a of the drive screw 54 cause the drive screw 54 to descend relatively to elevate the height of the device mount 30. When the switch knob 73a is operated in the descent mode The drive motors 51A, 51B and 51C are simultaneously rotated in the same direction under the control of the control unit 60 so that the screw action of the female screw portion 53a of the rotary shaft 53 and the male screw portion 54a of the drive screw 54 is transmitted to the drive screw 54 are raised so that the height of the device mount 30 is relatively lowered.

Since the mounting of the control box 60, the battery module 71, and the switch 72 is performed by a conventional method, a detailed description thereof will be omitted.

The electrical connection between the inclination detection sensor 41 and the drive motors 51A, 51b and 51C and the control unit 60 and the power supply means 70 is performed by the wiring hole 44 formed in the upper support 10, And the wires can be formed by the wiring holes 45 formed in the upper leg member 25 and the wiring holes 46 formed in the upper and lower portions of the upper leg member 25. This is not a core technology constitution of the present invention, The detailed description thereof will be omitted.

The observation point matching means 80 includes a vertical bar 81 vertically fixed at the center of the device mount 30 and a vertical bar 81 spaced downwardly from the lower end of the vertical bar 81, A compression spring 84 having upper and lower ends fixedly connected to a lower end of the vertical rod 81 and an upper end of the observation point landing rod 82 and a compression spring 84 surrounding the compression spring 84, And a spring housing 85 whose upper end is fixed to the lower end of the vertical bar 81.

A male screw portion 86 is formed at an upper end of the vertical rod 81 and a female screw portion 87 corresponding to the male screw portion 86 is formed at the center of the instrument mount 30 to receive the male screw portion 86 The vertical bar 81 can be vertically fixedly coupled to the device mount 30 by fastening it to the female screw portion 87. [

The upper end and the lower end of the compression spring 84 can be coupled to the lower end of the vertical bar 81 and the upper end of the observation point landing rod 82, respectively.

The upper end of the spring housing 85 may be welded or screwed to the lower end of the vertical bar 81.

The operation of the tripod protection device in the geodetic surveying according to the present invention will be described below.

First, a process of adjusting the lengths of the legs 20A, 20B, and 20C will be described.

The lower leg member 26a is pulled or pushed in a state in which the leg engagement screw 27b fastened to the nut portion 27c of the leg linking ring 27a fixed to the lower end of the upper leg member 25a is loosened The lengths of the legs 20A, 20B, and 20C including the upper leg 25 and the lower leg 26 can be adjusted to be longer or shorter. After the length of the legs 20A, 20B and 20C is adjusted, when the leg engagement screw 27b is tightened, the distal end of the leg engagement screw 27b is brought into close contact with the side surface of the lower leg member 26a, The lower legs 26 can not be arbitrarily elongated or shortened.

Next, a process of opening or folding the legs 20A, 20B, and 20C will be described.

As shown in Fig. 2, when the legs 20A, 20B and 20C are pulled in the direction in which the three legs 20A, 20B and 20C are folded in a straight line, The hinge member 21 is pivoted outward with respect to the hinge pin 24 with respect to the hinge portion 11 of the upper support pedestal 10 so that the legs 20A, 20B and 20C are opened as shown in Fig. 3 do.

As shown in FIG. 3, when the three legs 20A, 20B, 20C are opened and the respective legs 20A, 20B, 20C are pushed in the folding direction, the hinges 20A, The legs 20A, 20B and 20C are folded inward as shown in Fig. 2, with the hinge pin 21 rotating inward with respect to the hinge pin 24 with respect to the hinge portion 11 of the upper support table 10. [

At this time, the vertical rods 81, the observation point landing rods 82, and the spring housing 85 constituting the observation point matching means 80 are positioned between the legs 20A, 20B and 20C.

Next, the procedure for installing the tripod on the ground is explained.

As shown in Fig. 3, the observation point fixing portion 83 of the observation point matching means 80 is positioned at the observation point in a state in which the legs 20A, 20B and 20C are open, The landing portion 54b formed at the lower end of the drive screw 54 constituting the mount horizontal holding means 50 is caused to land on the ground.

Next, a process of holding the device mount 30 horizontally will be described.

In the case of landing on the ground with the legs 20A, 20B and 20C being adjusted in the same manner, when the inclination of the ground is severe, the upper support 10 is severely inclined and the legs 20A, 20B, The device mount 30 and the measuring device (not shown) by the legs 20A, 20B, and 20C even when the device mount 30 is later held horizontally. The support may be made in an unstable state.

It is therefore desirable to adjust the length of each leg 20A, 20B, 20C so that the top support 10 and the device mount 30 are approximately horizontal.

The switch knob 72a of the switch 72 of the power supply means 70 is turned on in a state where the tripod is installed on the ground (see Figs. 4 and 6) so that the power of the battery module 71 is detected by the inclination sensor 41 And the control unit 60 installed in the control box 61 are supplied with power.

When the power is applied, the inclination detection sensor 41 reduces the inclination of the device mount 30. The inclination of the device mount 30 from the center of the device mount 30 to the respective legs 20A, 20B, , C).

The inclination detection signal sensed by the inclination sensor 41 is transmitted to the control unit 60 and the control unit 60 drives the drive motors 51A, 51B and 51C individually in accordance with the inclination A, B and C do.

When the drive motors 51A, 51B and 51C are rotated forward, the drive screw 54 is raised by the screw action of the female screw portion 53a of the rotary shaft 53 and the male screw portion 54a of the drive screw 54, When the drive motors 51A, 51B and 51C are reversely rotated, the drive screw 54 is lowered by the screw action of the female screw portion 53a of the rotary shaft 53 and the male screw portion 54a of the drive screw 54 .

The drive screw 54 does not rotate by the rotation preventing mechanism 55 but only moves up and down. That is, it is guided by the elevation guide hole 55b formed in the key block 55a fixed to the upper surface of the drive motors 51A, 51B and 51C so as to be able to ascend and descend, and in the key fixing groove 55c of the key block 55a, Since the other half of the key 55e having the half portion is inserted and fixed is inserted and guided into the key guide groove 55d formed in the drive screw 54, the drive screw 54 does not rotate but moves up and down .

Hereinafter, the horizontal holding operation according to the inclination degrees A, B and C of the respective legs 20A, 20B and 20C will be described with reference to Figs. 4 to 7. Fig.

① When the inclination (A, B, C) is A> B = C

In this case, there is a method (method 1 - 1) in which only the drive motor 51A is reversely rotated and the drive motors 51B and 51C are not driven, the drive motor 51A is reversely rotated, The apparatus mount 30 can be brought into a horizontal state by the method of rotating (Method 1 - 2).

When the driving motor 51A is rotated in the reverse direction in accordance with the method (1) -1, the female screw portion 53a of the rotary shaft 53 of the driving motor 51A and the threaded portion 54a of the drive screw 54 corresponding thereto The drive screw 54 is lowered.

When the drive screw 54 corresponding to the drive motor 51A is lowered, the portion corresponding to the leg 20A of the multi-function device 20A and the device mount 30 is raised.

As a result, the inclination degree A of the leg 20A gradually becomes smaller and the inclination degree sensor 41 continuously detects the inclination degrees A, B and C and transmits the same to the control unit 60, The inclination detection sensor 41 detects the inclination of the driving motor 51 and transmits it to the control unit 60. The control unit 60 stops the reverse rotation of the driving motor 51A, The mount 30 is brought into a horizontal state and the vertical bar 81 constituting the viewpoint matching means 80 and the observation point landing rod 82 and the spring housing 85 are in a vertical state (see Figs. 5 and 7) .

When the drive motor 51A is rotated in the reverse direction in accordance with the method 1 - 2, the female screw portion 53a of the rotary shaft 53 of the drive motor 51A and the threaded portion 54a of the drive screw 54 corresponding thereto The drive screw 54 is lowered and the drive motor 51B or 51C is rotated forward to rotate the female screw portion 53a of the rotary shaft 53 of the drive motor 51B or 51C and the drive screw 54 The driving screw 54 is raised by the screw action of the male screw portion 54a.

In this method, the horizontal process of the device mount 30 in accordance with the three-dimensional rotation of the device mount 30 and the process of maintaining the horizontal state are the same as in the above-described method 1-1, The portion of the leg 20A corresponding to the leg 20A of the device mount 30 is lifted and the legs 20B and 20C of the device mount 30 are lifted up, Is lowered, so that the time required for the device mount 30 to reach the horizontal state is shortened to half.

② If the slope (A, B, C) is A> B> C

In this case, there is a method (method 2-1) in which the drive motors 51A and 51B are reversely rotated and the drive motor 51C is not driven, and the drive motors 51A and 51B are reversely rotated, The apparatus mount 30 can be brought into a horizontal state by the method of rotating (Method 2 - 2).

When the drive motors 51A and 51B rotate in the reverse direction in accordance with the method (2-1), the female screw portion 53a of the rotary shaft 53 of the drive motors 51A and 51B and the male screw portion The driving screw 54 is lowered by the action of the screw 54a.

When the drive screws 54 corresponding to the drive motors 51A and 51B are lowered, the legs 20A and 20B and the device mount 30 are lifted at portions corresponding to the legs 20B and 20C.

As a result, the inclination degrees A, B and C of the legs 20A, 20B and 20B gradually become smaller, and the inclination detection sensor 41 continuously detects the inclination angles A, B and C, When the inclination degrees A, B and C reach 0, the inclination detection sensor 41 senses the inclination and transmits it to the control unit 60. The control unit 60 controls the drive motors 51A, The apparatus mount 30 is brought into a horizontal state and the vertical rod 81 constituting the observation point matching means 80 and the observation point landing rod 82 and the spring housing 85 are in a vertical state.

When the drive motors 51A and 51B rotate in the reverse direction in accordance with the method 2-2, the female screw portion 53a of the rotary shaft 53 of the drive motors 51A and 51B and the male screw portion The driving screw 54 is lowered by the screw action of the driving screw 51a and the driving screw 51a of the drive screw 51 The driving screw 54 is raised by the screw action of the male screw portion 54a.

In this method, the horizontal process of the device mount 30 and the horizontal process of the device mount 30 according to the three-dimensional rotation of the device mount 30 are the same as in the above-described process (1) -1 except that the drive motors 51A and 51B The portion corresponding to the legs 20A and 20B of the device mount 30 is lowered and the portion corresponding to the leg 20C is moved upward as the drive screw 54 corresponding to the upper portion of the device mount 30 ascends, The time to reach the state is shortened by half.

When the measuring device is mounted on the upper surface of the device mount 30 maintained in the horizontal state, the measuring device is kept horizontal, so that the leveling device is kept horizontal without performing the operation for maintaining the leveling device The measurement operation can be started immediately after mounting the measuring instrument on the mount 30.

In this case, if the length of the three legs 20A, 20B and 20C is adjusted to be exactly the same, horizontal holding operation by the device mounting horizontal holding means 40 becomes unnecessary. However, It is virtually impossible to adjust the lengths of the three legs 20A, 20B and 20C to be exactly the same, so that the device mount 30 can not be kept horizontal when the tripod is landed on the ground at the surveying work site.

Therefore, the horizontal holding operation by the device mount horizontal holding means 40 as described above can be applied not only to the horizontal plane as shown in Fig. 3, but also to the horizontal plane as shown in Fig. 4 to Fig. 7 .

The viewpoint matching unit 80 includes the vertical bar 81, the observation point landing rod 82, and the observation point landing rod 83. The distance from the center of the equipment mount 30 to the observation point spotting unit 83 varies in the above- Since the length of the viewpoint matching means 80 is elastically varied in accordance with the variation of the distance, the observation point fixation section 83 is always made to coincide with the observation point State.

Hereinafter, a process of adjusting the height of the device mount will be described.

When the switch knob 73a of the height adjustment switch 73 of the power supply means 70 is operated in the upward mode, the three drive motors 51A, 51B, and 51C are rotated in the reverse direction under the control of the control unit 60 The drive screw 54 is lowered due to the screw action of the female screw portion 53a of the rotary shaft 53 and the male screw portion 54a of the drive screw 54 so that the height of the device mount 30 relatively increases .

When the switch knob 73a of the height adjustment switch 73 of the power supply means 70 is operated in the downward mode, the three drive motors 51A, 51B, and 51C are rotated forward under the control of the control unit 60, The drive screw 54 rises due to the screw action of the female screw portion 53a of the rotary shaft 53 and the male screw portion 54a of the drive screw 54 so that the height of the device mount 30 relatively decreases.

At this time, when the switch knob 73a of the height adjustment switch 73 is operated in the rising mode or the falling mode, the controller 60 does not perform the horizontal adjustment operation even if the horizontal adjustment switch 73 is turned on, After the height adjustment operation is completed, the horizontal adjustment operation may be performed immediately.

Therefore, in adjusting the height of the device mount, the number of machine lifting the tripod to loosen the leg engagement screw 27b of the leg engagement hole 27, adjust the length of the leg 20, The height of the device mount 30 can be adjusted only by manipulating the height adjustment switch 73 without performing a process of tightening the height adjuster 27b, So that the height of the equipment mount on which the surveying instrument is mounted and the horizontal position of the surveying instrument mount on which the surveying instrument is mounted can be adjusted quickly, easily and accurately, so that the surveying operation can be efficiently performed.

In this case, too, the distance from the center of the device mount 30 to the point-of-sight spotting portion 83 varies. The point-of-observation point matching means 80 includes the vertical rods 81, the observation point landing rods 82, Since the length of the viewpoint matching means 80 is elastically varied in accordance with the variation of the distance, the viewpoint spotting section 83 is always in a state of coinciding with the viewpoint .

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or essential characteristics thereof. Therefore, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea of the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10: upper support 11: hinge
20: leg 21: hinge member
25: upper leg 26: lower leg
27: leg joint 30: instrument mount
40: tilt detection means 41: tilt detection sensor
50: Device mounting horizontal holding means 51A, 51B, 51C:
53: rotation shaft 54: drive screw
55: anti-rotation mechanism 60:
70: power supply means 71: battery module
72: Level adjustment switch 73: Height adjustment switch
80: Viewpoint matching means 81:
82: observation point landing rod 83: observation point fixing section
84: compression spring 85: spring housing

Claims (1)

20A, 20B, and 20C that are pivotably connected to the upper end support 10 in such a manner that the upper end thereof is rotatably coupled to the upper end support 10, A device mount (30) on which the device is mounted; An inclination detecting means (40) installed on the device mount (30) and detecting the inclination of the device mount (30); An apparatus mount horizontal holding means (50) for automatically maintaining the apparatus mount (30) in a horizontal state in accordance with a tilt detection signal of the tilt detecting means (40); A control unit 60 incorporated in a control box 61 mounted on a lower surface of the upper support 10; A power supply means 70 for supplying power to the inclination detecting means 40, the device mount horizontal holding means 50 and the control unit 60; And viewpoint matching means (80) for precisely matching the center of the device mount (30) with the viewpoint,
The upper support 10 includes three hinge portions 11 each having a hinge hole 11a for rotatably connecting the upper ends of the legs 20A, 20B and 20C at regular angular intervals,
The legs 20A, 20B and 20C correspond to the hinge portions 11 and include a hinge portion 22 provided with a hinge hole 22a corresponding to the hinge hole 11a, A hinge member 21 having an upper leg connecting portion 23 formed integrally with the upper leg connecting groove 23a and a hinge pin 24 connecting the hinge portions 11 and 22 so as to be rotatable relative to each other, An upper leg 25 provided with a pair of upper leg members 25a inserted in parallel in the upper leg connecting groove 23a of the hinge member 21 and a pair of upper leg members 25a A lower leg 26 fixed to a lower end of the upper leg member 25a and configured to allow the lower leg 26 to pass therethrough, (27a) and the leg linking ring (27a) so as to penetrate through one of the upper leg members (25a) And it comprises a contact bridge is equipped with a coupling screw (27b) foot coupler 27,
The inclination detecting means 40 is mounted on the device mount 30 and detects the inclination degrees A and B of the device mount 30 with respect to the direction toward the respective legs 20A, 20B and 20C from the center of the device mount 30 , C), and the inclination sensor (41)
The device mount horizontal holding means 50 is configured such that the center axis of the device mount horizontal holding means 50 is supported by the lower leg members 26a on the inner side surfaces of the lower leg members 26a of the lower legs 26 constituting the respective legs 20A, 20B, (51A, 51B) provided with a rotary shaft (53) having an internal threaded portion (53a) formed on an inner peripheral surface thereof and rotatably mounted on the motor body (52) A driving screw 54 having a male screw portion 54a screwed to the female screw 53a of the rotary shaft 53 and a fixing portion 54b formed at the lower end thereof; And a rotation preventing mechanism 55 provided between the upper end of the driving screw 54 and the driving screw 54 to prevent the driving screw 54 from rotating,
The control unit 60 is installed inside the control box 61 mounted on the lower surface of the upper support 10,
The power supply means 70 is mounted on the lower surface of the upper support table 10 so that the inclination detection sensor 41 of the inclination detection means 40 and the drive motors 51A, 51B, 51C of the device mount horizontal holding means 50 A horizontal adjustment switch 72 for adjusting the horizontal position of the device mount 30 by turning the power of the battery module 71 on and off, And a height adjustment switch 73 for adjusting the height of the device mount 30 by turning on and off the power of the device mount 30,
The observation point matching means 80 includes a vertical bar 81 vertically fixed at the center of the device mount 30 and a vertical bar 81 spaced downwardly from the lower end of the vertical bar 81, A compression spring 84 having upper and lower ends fixedly connected to a lower end of the vertical rod 81 and an upper end of the observation point landing rod 82 and a compression spring 84 surrounding the compression spring 84, And a spring housing (85) whose upper end is fixed to the lower end of the vertical rod (81).

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