KR101335489B1 - Tripod fixing apparatus for geodetic surveying instrument - Google Patents

Abstract

The present invention relates to a ground fixing apparatus for geodetic surveying tripods, and comprises; an upper end support and three legs installed on the upper end support with rotatable combination to allow opening and pursing; a mount combined to the upper end support with a surveying instrument mounted inside; a leg support means for supporting with the legs opened; a leg fixing means to fix the legs on the ground; and is capable of preventing arbitrary falls of the tripod due to wind, external shocks or vibrations, etc. with the tripod in an installed condition so that damages to the surveying instruments mounted on the mount may be prevented. The invention is provided with a means to maintain the mount level to allow automatic maintenance of a level condition for the mount, wherein the upper face of the mount is maintained in level by maintaining the mount level when the legs are grounded, while the surveying instrument is maintained in level when the surveying instrument is mounted on the mount after the tripod is installed with the legs supported by the leg supporting means so that the tripod installation and surveying operation may be conducted promptly.

Description

[0001] The present invention relates to a tripod fixing apparatus for a geodetic surveying instrument,

The present invention relates to a ground fixing device of the tripod during geodetic survey, more specifically, when the tripod is installed on the ground leg is firmly fixed to the ground so that the tripod does not fall arbitrarily by wind or external shock or vibration, etc. The top surface of the mount on which the instrument is mounted is automatically leveled so that it can be prevented from damage to the instrument mounted on the mount, and even when a tripod is installed on an inclined ground as well as a level ground. The present invention relates to a ground stationary device for tripods during geodetic surveying, in which the leveling device is leveled by simply mounting the instrument on the mount after the tripod is installed so that the tripod can be quickly installed and surveyed.

For geodetic surveying, measurement equipment (measuring equipment) such as levelers, transit and total stations is used, and these precision measuring instruments are generally mounted on a tripod so as to be positioned at a certain height on the ground.

In the following description, the measuring instrument and the survey instrument have the same meaning and are selected according to the context.

The requirements for geodetic tripods are that they can be grounded firmly on the ground so that they can be supported safely without falling down due to wind or external stratification. It must be.

The geodetic tripod according to the prior art is configured to include a measuring instrument mount is mounted on the top of the upper support and the upper support for rotatably supporting the three legs and the upper end of the legs and the instrument is mounted.

The legs have an upper leg and a lower leg are configured to be adjustable in length, the upper end of the upper leg is pivotally connected to the upper support is configured to open and close the legs.

In addition, one end of the brace rod is rotatably connected to the lower end of the upper leg, and the other end of each brace rod is rotatably connected to the connector so that when the legs are lifted, they are in parallel with the legs and are horizontal when the legs are opened. And to support the legs.

The mount is rotatably coupled to the top support in a horizontal and vertical direction so that the mount can be leveled.

However, the geodetic tripod according to the prior art has to adjust the horizontal level of the surveying instrument installed on the upper surface while rotating the mount in the horizontal and vertical directions with respect to the upper support from the state of landing the leg on the ground, which is cumbersome to install the surveying instrument. There is a problem that it takes a lot of time to adjust the level.

Therefore, there is a need to develop a ground fixing device for a geodetic surveying tripod to easily adjust the level of the mount on which the surveying instrument is installed.

In addition, in the prior art, since the leg of the tripod is simply supported by the landing member fixedly coupled to the bottom of the ground in a state of landing on the ground, the tripod is mounted by a wind or external shock in the process of carrying out the surveying operation by mounting the surveying device on the mount. Is prone to fall, and thus expensive surveying equipment mounted on the mount may collide with the ground and be damaged.

Therefore, it is necessary to develop a grounding device for tripods during geodetic surveying, where the tripod on which the surveying instrument is installed does not fall easily due to wind or external impacts during the geodetic surveying operation, thereby preventing damage to expensive surveying equipment mounted on the mount. There is.

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

Accordingly, an object of the present invention is that when the tripod is installed on the ground, the legs are firmly fixed to the ground so that the tripod does not fall arbitrarily by wind or external shock or vibration, thereby preventing damage to the surveying device mounted on the mount. To provide a geodetic grounding device for tripods.

Another object of the present invention is to survey the mount after the tripod installation by supporting the legs landing on the ground so that the upper surface of the mount on which the surveying instrument is mounted is automatically maintained even when the tripod is installed on a horizontal surface as well as an inclined ground. It is intended to provide a grounding device for tripods in geodetic surveying, whereby the instrument is leveled just by mounting the instrument, so that the tripod can be quickly installed and surveyed.

The present invention has been made in order to solve the problems and necessity as described above, the upper support and the three legs are rotatably coupled to open the upper support to the upper support, and coupled to the upper support and surveyed A mount to which the device is mounted, leg support means for supporting the leg in an open state, mount horizontal holding means for maintaining the mount in a horizontally horizontal position, and for firmly fixing the leg to the ground A leg fixing means,

The upper support is provided with three hinge parts and the hinge hole is connected to the upper end of the leg to be rotated at equal angle intervals,

The leg corresponds to the hinge portion and a hinge portion formed with a hinge hole corresponding to the hinge hole, a hinge pin inserted into the hinge hole to connect the hinge portion to be able to rotate relatively, spaced horizontally from the hinge portion A pair of upper legs having a pair of leg members extending downward in two directions, a box-shaped guide coupled to a lower end of the leg member, and having an upper and lower end open, and a length between the pair of leg members through the guide; A lower leg that is slidably inserted in the direction, and a leg adjusting screw fastened to the guide so that the tip is in close contact with the lower leg,

The leg support means may include a cylindrical rod having a connecting piece protruding from the inner side of the guide, a connecting rod connected to the connecting piece with a connecting pin, and a rod-shaped rod with an outer end slidably inserted into the cylindrical rod. A fastening screw fastened to the cylindrical rod, the tip of which is in close contact with the outer circumferential surface of the rod-shaped rod in the cylindrical rod, a handle integrally coupled to the rear end of the tightening screw, and corresponding to an inner end side of the rod-shaped rod. A connection ring having a connection piece disposed on an outer circumferential surface thereof and having a connection piece inserted at an inner end of the rod-shaped rod;

The mount horizontal holding means is a three-dimensional rotational support provided with a spherical inner peripheral surface A having an upper and lower ends inserted and fixed in an insertion space installed in the upper support, and a spherical outer peripheral surface corresponding to the spherical inner peripheral surface A and inserted into the spherical inner peripheral surface A. A three-dimensional rotating body provided with a liner having a spherical inner circumferential surface B having a curvature smaller than A and a spherical outer circumferential surface A, a spherical outer circumferential surface B inserted into the spherical inner circumferential surface B and corresponding to the spherical inner circumferential surface B; A three-dimensional rotating body fixing screw which is screwed in a normal direction and its tip is in close contact with the spherical outer circumferential surface A of the liner, extends vertically through the three-dimensional rotating body, and is fixedly coupled to the mount at an upper end thereof. A vertical retaining rod extending downward and inserted into the connection ring, and a weight weight fixedly coupled to a lower end of the vertical retaining rod;

The leg fixing means includes a connector fixed to the lower end of the lower leg, a lower leg support rod integrally coupled to the lower end of the connector, and a three-dimensional pivotal support integrally coupled to the lower end of the lower leg support rod and having a spherical outer circumferential surface. And a three-dimensional rotating body having a spherical inner circumferential surface corresponding to the spherical outer circumferential surface of the three-dimensional rotating support, a coupling portion coupled to the three-dimensional rotating body, and integrally extending from the lower end of the coupling portion, so that the lower end is sharp. A ground fixing member having a plurality of ground fixing parts formed therein, an upper dust cover connected between the lower end of the connector and an upper end of the three-dimensional rotating body, and a lower dust cover covering the lower portion of the three-dimensional rotating body. Tripod fixing device for geodetic survey.

According to the ground fixing device of the tripod of the geodetic survey of the present invention, the upper support and the three legs are installed so that the upper end is rotatably coupled to the upper support, and coupled to the upper support, the surveying device is mounted A tripod including a mount, a leg support means for supporting the leg in an open state, and a leg fixing means for fixing the leg to the ground, in which a tripod is arbitrarily crossed by wind or external shock or vibration in a state where a tripod is installed. This prevents the instrument from falling and damages the instrument that is mounted on the mount.

In addition, according to the ground fixing device of the tripod during geodetic surveying of the present invention is provided with a mounting horizontal holding means for automatically maintaining the mount in a horizontal state, when the leg lands on the ground, the upper surface of the mount by the mounting horizontal holding means When the level is maintained horizontally and the tripod is installed by supporting the leg by the leg support means, and then the surveying device is mounted on the mount, the surveying device is kept horizontal so that the installation and the surveying work can be proceeded quickly.

1 to 9 show a preferred embodiment of the ground fixing device of the tripod during geodetic surveying according to the present invention,
1 is an exploded perspective view seen from the upper surface side,
FIG. 2 is a perspective view showing a state in which a leg is folded,
Figure 3 is a perspective view showing the state of releasing the fixing of the three-dimensional rotating body, separating the cylindrical rod and rod-shaped rod from the connecting ring and the tripod spread on the horizontal ground,
4 is a perspective view showing a state in which the three-dimensional rotating body is fixed;
Figure 5 is a perspective view showing a state in which the legs are supported by adjusting the length of the cylindrical rod and rod rod and connecting the rod rod to the connection ring,
6 is a partial cross-sectional front view of FIG. 5, FIG.
7 is a perspective view showing a state in which the three-dimensional rotating body is released, the cylindrical rod and the rod-shaped rod are separated from the connecting ring, and the tripod with the legs is landed on the inclined ground;
8 is a perspective view showing a state in which the three-dimensional rotating body is fixed;
And
9 is a perspective view showing a state in which the legs are supported by adjusting the length of the cylindrical rod and the rod and connecting the rod to the connecting ring.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a land fixing apparatus for a tripod in the geodetic survey according to the present invention will be described in detail with reference to the accompanying drawings.

The ground fixing device of the tripod during geodetic surveying according to the present invention, as shown in Figures 1 to 9, the upper support 10, the upper end to the upper support 10 is rotatably coupled to open and retracted. Three legs 20 to be installed, and a mount 30 coupled to the upper support 10 to which the surveying apparatus is mounted, and leg support means 40 for supporting the legs 20 in an open state; Mount horizontal holding means (50) for maintaining the mount 30 in the horizontal state and a leg fixing means (60) for firmly fixing the leg (20) to the ground.

The upper support 10 includes three hinge portions 11 and a hinge hole 12, which are rotatably connected to the upper ends of the legs 20, at regular angular intervals.

The leg 20 corresponds to the hinge portion 11 and the hinge portion 21 in which the hinge hole 22 corresponding to the hinge hole 12 is formed, and the hinge holes 12 and 22 are inserted into the hinge A hinge pin 23 connecting the branches 11 and 21 so as to be rotatable relative to each other, a pair of leg members 25 extending downward in two directions at intervals in the horizontal direction from the hinge portion 21, and Coupled to the lower end of the leg member 25, the upper leg 24 having a box-shaped guide opening 26, the upper and lower ends, and between the pair of leg members 25 through the guide opening 26 And a lower leg 27 slidably inserted in the longitudinal direction.

The leg member 25 and the guide hole 26 of the upper leg 24 are inserted into the guide hole 26 while the fastening screw 26a passing through the guide hole 26 is inserted into the guide hole 26, And is fastened to the member (25) by fastening.

The mount 30 can be integrally joined by forming a screw hole 31 at the center of the mount 30 and fastening it to a screw portion 55a formed at an upper end of a vertical holding rod 55 described later. At this time, it is preferable that two screws (32) are fastened to the screw portion (55a) so as to be brought into close contact with the lower surface of the mount (30) so that the mount (30) is not arbitrarily detached from the vertical holding rod (55).

In the illustrated example, a plurality of (three in the drawings) holes 33 for mounting a measuring instrument (not shown) are provided. However, the present invention can be applied to any one of the conventional mounts You can choose.

The leg supporting means 40 includes a connecting piece 41 protruding from an inner surface of the guide hole 26 and a connecting piece 43a connected to the connecting piece 41 by a connecting pin 42, A cylindrical rod 43 having an outer end slidably inserted into the cylindrical rod 43 and a cylindrical rod 43 fixed to the cylindrical rod 43 so as to have a tip end inside the cylindrical rod 41, A handle 45a which is integrally coupled to the rear end of the tightening screw 45 and a handle 45a which is in contact with the inside end of the rod rod 44 A connecting ring 46 having a connecting piece 46a for inserting a connecting piece 44a provided at an inner end of the rod-like rod 44 on the outer circumferential surface thereof, and a connecting ring 46a for connecting the connecting pieces 44a and 46a And a detachable connection pin (47).

It is preferable that the fastening screw 45 be a screw having a handle such as a butterfly screw so that an operator can manually tighten or loosen the screw without a separate tool.

It is preferable that the detachable connection pin 47 is provided with a handle 47a for facilitating the detachment operation. In the illustrated example, the handle 47a is formed in a butterfly shape, but it may be formed in a ring shape.

The mount horizontal holding means 50, the three-dimensional rotation support 51 is provided with a spherical inner peripheral surface A (51a) is inserted and fixed to the insertion space 13 installed in the upper support 10, the upper and lower ends are open, A liner 52 inserted into the spherical inner circumferential surface A 51a and provided with a spherical outer circumferential surface A 52a corresponding to the spherical inner circumferential surface A 51a and a spherical inner circumferential surface B 52b having a smaller curvature than the spherical outer circumferential surface A 52a; And a three-dimensional rotating body 53 inserted into the spherical inner circumferential surface B 52b and provided with a spherical outer circumferential surface B 53a corresponding to the spherical inner circumferential surface B 52b, and in a normal direction to the three-dimensional rotating support 51. Screwed into the three-dimensional rotating body fixing screw 54 and the three-dimensional rotating body 53 which is in close contact with the spherical outer peripheral surface A (52a) of the liner 52, and extends up and down The vertical holding rod 55 is fixedly coupled to the top at a right angle and extended downward to be inserted into the connection ring 46. It is configured to include a weight 56 is fixedly coupled to the bottom of the support rod (55).

A through hole 53b is formed in the three-dimensional rotating body 53 so that the upper end of the vertical holding rod 55 is passed through the through hole 53b and the vertical holding rod The fixing nut 53c is fastened to the threaded portion 55a formed at the upper end of the vertical holding rod 55 in a state in which the upper surface of the three-dimensional rotating body 53 is closely attached to the lower surface of the nut 32 fastened to the nut 55 The three-dimensional rotating body 53 can be integrally fixed to the upper end of the vertical holding rod 55 by being brought into close contact with the lower surface of the three-dimensional rotating body 53.

The vertical holding rods 55 and the weight rods 56 are provided with a screw portion 55b at the lower end of the vertical holding rod 55 and a screw hole 56a at the upper surface of the weight rod 56, And the screw holes 56a are engaged with each other.

The leg fixing means 60 is a connector 61 fixed to the lower end of the lower leg 27, the lower leg fixing rod 62 is integrally coupled to the lower end of the connector 61, and the lower leg fixed A three-dimensional pivot support 63 integrally coupled to the lower end of the rod 62 and having a spherical outer circumferential surface 63a and a spherical inner circumferential surface 64a corresponding to the spherical outer circumferential surface 63a of the three-dimensional pivot support 63. The three-dimensional rotating body 64 having a), the coupling portion 65a coupled to the three-dimensional rotating body 64, and formed integrally extending from the lower end of the coupling portion 65a, the lower end is formed in a sharp shape A ground fixing member 65 having a plurality of ground fixing parts 65b, an upper dust cover 66 connected between a lower end of the connector 61 and an upper end of the three-dimensional rotating body 64, and the three The lower dust cover 67 is covered with the lower end part of the dimensional rotating body 64, and is comprised.

The connector 61 is formed in a box shape with an upper surface open, and an upper end of the lower leg fixing rod 62 is integrally coupled to the lower surface.

The fixed coupling of the connector 61 to the lower end of the lower leg 27 may be made by fastening the fixing screw 61a penetrating the wall of the connector 61 to the lower leg 27.

The ground fixing part 65b may be configured as one or two, but it is preferable that the ground fixing part 65b is configured in three in order to be firmly fixed to the ground and to be able to respond to a ground state such as inclination or irregularities.

A screw portion 62a is formed at the lower leg fixing rod 62, and the three-dimensional rotation support 63 has a coupling hole 63b formed at the center thereof.

Coupling of the lower leg fixing rod 62 and the three-dimensional rotating support 63 passes through the lower leg fixing rod 62 to the coupling hole 63b and the upper and lower sides of the three-dimensional rotating support 63, the screw portion ( By fastening the nut 62b to 62a).

Coupling of the three-dimensional rotating body 64 and the ground fixing member 65 covers the engaging portion 65a of the ground fixing member 65 on the outer circumferential surface of the three-dimensional rotating member 63 and in the normal direction to the coupling portion 65a. It can be made by fastening the fixing screw 65c penetrating to the three-dimensional rotating body (64).

The upper dust cover 66 and the lower dust cover 67 are foreign matter such as dust or dirt, respectively, the clearance between the lower surface of the connector 61 and the upper surface of the three-dimensional rotating body 64 and the three-dimensional rotating body In order to prevent the intrusion between the three-dimensional rotating support 63 and the three-dimensional rotating body 64 through the lower end of (64), it is preferable to form a material having excellent elasticity and elastic restoring force such as rubber.

The upper dust cover 66 is integrally formed with a cone-shaped cover body 66a, an upper flange portion 66b integrally formed at the upper end of the cover body 66a, and a lower end of the cover body 66a. The upper flange portion 66c is formed, the upper flange portion 66b is tightly fixed to the lower surface of the connector 61, the lower flange portion 66c on the upper surface of the three-dimensional rotating body (64) Tightly fixed.

The tight fixing of the lower surface of the upper flange portion 66b and the connector 61 is adhesively fixed to the upper surface of the upper flange portion 66b and the lower surface of the connector 61 with an adhesive, or the upper flange portion 66b is fixed from above. The fastening screw 66d penetrates to the lower surface of the connector, and the lower flange portion 66c and the three-dimensional pivot 64 are tightly fixed to the lower surface of the lower flange portion 66c in three dimensions. The upper surface of the rotating body 64 may be adhesively fixed or fastened to the three-dimensional rotating body 64 by a fixing screw 66e penetrating the upper flange portion 66c from the top to the bottom.

The lower dust cover 67 is a cylindrical portion 67a inserted between the outer circumferential surface of the three-dimensional pivot 64 and the inner circumferential surface of the engaging portion 65a of the ground fixing member 65 and the lower end of the cylindrical portion 65a. It consists of a disk part 66b integrally formed in the.

In installing the lower dust cover 67, the outer peripheral surface and the ground fixing member of the cylindrical portion 67a in the process of coupling the three-dimensional rotating body 64 and the ground fixing member 65 It can be made by inserting between the inner peripheral surface of the engaging portion (65a) of 65 and passing through the fixing screw (65c) through the coupling portion (65a) and the cylindrical portion (67a) to fasten to the three-dimensional rotating member (64). .

Hereinafter, the operation of the ground fixing device of the tripod during geodetic surveying according to the present invention.

First, as shown in FIG. 2, the process of unfolding the leg 20 in the folded state and landing on the ground will be described.

When the removable connecting pin 47 for connecting the connecting piece 46a of the connecting piece 44a of the rod-shaped rod 44 constituting the leg support means 40 is drawn out, the cylindrical rod 43 And the rod-shaped rod 44 is rotated downward about the connecting pin 42 connecting the connecting piece 43a of the cylindrical rod 43 and the connecting piece 41 of the guide port 26 by its own weight. Ring 46 is lowered along the vertical retaining rod 55 by magnetism and seated on the weight 56 (see FIG. 3).

The tip of the three-dimensional rotating body fixing screw 54 is relaxed by loosening the three-dimensional rotating body fixing screw 54 fastened to the three-dimensional rotating support member 51 constituting the mount horizontal holding means 50. The leg 20 is opened while being spaced apart from the spherical outer circumferential surface A (52a) of the) so that the three-dimensional rotating body 53 is released and freely three-dimensionally rotated.

At this time, the three-dimensional pivot 64, to which the ground fixing member 65 is coupled, is supported by the three-dimensional pivot support 63 so that the three-dimensional pivot is supported by the ground fixing member 65 and the three-dimensional pivot 64. ) Is vertically downward due to its own weight (see FIG. 3).

When the ground is horizontal to the ground at the same time the ground fixing part (65b) is landing on the ground at the same time, in this state by pressing the tripod from the top down, the ground fixing part (65b) landed on the ground will be stuck to the ground (see Fig. 6).

Therefore, the tripod is fixed to the ground without fixing the tripod, even if the tripod (65b) of the ground fixing member 65 is embedded in the ground, even if wind or external impact is applied to the tripod.

Meanwhile, since the fixing of the three-dimensional rotating body 53 to which the vertical holding rod 55 is fixed is released, the vertical holding rod 55 and the weight 56 are three-dimensional rotating body 53 by their own weight. ) And the vertical retaining rod 55 and the weight 46 are integrally rotated three-dimensionally so that the vertical retaining rod 55 is maintained vertically and fixedly coupled to the top of the vertical retaining rod 55. The top surface is kept horizontal.

In this state, when the three-dimensional rotating body fixing screw 54 screwed to the three-dimensional rotating support 51 is tightened so that the front end thereof comes into close contact with the spherical outer circumferential surface A 52a of the liner 52, the liner 52 The spherical inner peripheral surface B (52b) of the 3D rotating body 53 is pressed against the spherical outer peripheral surface B (53a), the three-dimensional rotating body 53 through the liner 52 to the three-dimensional rotating support (51) It is fixed against.

The connecting piece 44a of the rod-shaped rod 44 is lifted up to the height of the guide hole 26 provided at the lower end of the upper leg 24 along the vertical retaining rod 55. Slide to a position that can be inserted into the connecting piece (46a) of the 46 and inserts the removable connecting pin 47 to the connecting piece (44a) of the rod-shaped rod 44 and the connecting piece (46a) of the connecting ring (46) 43) to the connecting ring 46, and then tighten the tightening screw 47 fastened to the cylindrical rod 43 so that the tip of the tightening screw 47 is a rod-shaped rod 44 inside the cylindrical rod 43. The leg 20 is supported by the vertical rod 55 through the cylindrical rod 43, the rod 44, and the connecting ring 46 (see FIGS. 5 and 6). ).

In this state, since the top surface of the mount 30 is kept horizontal, the surveying device can be mounted by mounting the surveying device on the mount 30 (see FIG. 6).

On the other hand, when the ground is inclined, any one of the plurality of ground fixing members 65b of the ground fixing member 65 is landed first according to the ground state, and thus the ground fixing portion grounded ( 65b) is applied with an upward landing pressure, and the ground fixing member 65 and the three-dimensional rotating body 64 are three-dimensionally rotated with the spherical outer circumferential surface 63a of the three-dimensional rotating support 63 according to the upward landing pressure. It rotates three-dimensionally by the action of the spherical inner peripheral surface 64a of the fuselage 64, and all the ground fixing parts 65b land on the ground (refer FIG. 7).

In this state, when the tripod is pressed from the top to the bottom, the ground fixing part 65b landed on the ground is driven into the ground (see FIG. 8).

Therefore, the tripod is fixed to the ground without fixing the tripod, even if the tripod (65b) of the ground fixing member 65 is embedded in the ground, even if wind or external impact is applied to the tripod.

In addition, when the ground is inclined, the length of the leg 20 is adjusted differently according to the height of the ground corresponding to each leg 20 so that the top surface of the mount 30 is approximately horizontal.

In adjusting the length of the leg 20, the upper leg 27 is lifted by lifting the leg adjusting screw 28 fastened to the guide hole 26 so that the upper leg 24 and the lower leg 27 are moved. By adjusting the length of the leg 20 including and tightening the leg adjusting screw 18 so that the tip is in close contact with the lower leg 27, it is possible to keep the leg 20 in the length adjusted state.

In this way, the length of the leg 20 located on the higher side of the sloped ground is adjusted shorter and the length of the leg 20 located on the lower side is adjusted longer.

The triangles formed by the fixed fixing members 65 coupled to the lower legs 27 in the state of landing the legs 20 adjusted in length according to the inclination of the ground form an arbitrary triangle, not an equilateral triangle. The vertical retaining rod 55 is vertical due to the action of the dimensional rotating body 53 and the vertical retaining rod 54. The upper surface of the mount 30 is fixed to the upper end of the vertical retaining rod 55. (See Figure 8).

Thereafter, after the fixing process of the three-dimensional rotating body 53 and the supporting process of the legs 20 are mounted, the surveying device is mounted on the mount 30 so that the surveying device is horizontally installed to proceed with the surveying work. (See Figure 9).

On the other hand, when the tripod is erected in the folded state of the leg 20, the self-weight of the ground fixing member 65 and the three-dimensional rotating body 64 of the leg fixing means 60 and the spherical outer peripheral surface of the three-dimensional rotating support 63 The lower end fixing rod 62, the three-dimensional rotating body 64, and the ground fixing member 65 face vertically downward by the action of the 63a and the spherical inner peripheral surface 64a of the three-dimensional rotating body 64. It can be stored side by side with the (20) (see Figure 2).

In addition, between the lower surface of the connector 61 constituting the leg fixing means 60 and the upper surface of the three-dimensional rotating body 64, and the lower surface of the three-dimensional rotating body 64, the upper dust cover 66 and The lower dust cover 67 is provided so that foreign matters such as dust or dirt are separated from the gap between the lower surface of the connector 61 and the upper surface of the three-dimensional rotating body 64 and the three-dimensional rotating body 64. There is no intrusion between the three-dimensional pivot support 63 and the three-dimensional pivot 64 through the lower end, so that the three-dimensional pivot motion between the three-dimensional pivot support 63 and the three-dimensional pivot 64 is always smooth. Will be done.

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 falling within the scope of the same shall be construed as falling within the scope of the present invention.

10: upper support 20: leg
21: hinge portion 24: upper leg
25: leg member 26: guide member
27: lower leg 28: leg adjusting screw
30: mount 40: leg supporting means
41, 43a, 44a, 46a: connecting piece 42, 47: connecting pin
43: Cylindrical rod 44: Rod rod
45: pressure screw 46: connecting ring
50: mount horizontal holding means 51: three-dimensional rotational paper zone
52: liner 53: three-dimensional rotary body
54: three-dimensional rotor fixing screw 55: vertical holding rod
56: Weight 57: Tightening screw
60: ground fixing means 61: connector
62: lower leg fixed rod 63: 3D rotating support
64: three-dimensional rotating body 65: ground fixing member
66: upper dust cover 67: lower dust cover

Claims (1)

The upper support 10 includes three legs 20 that are pivotally mounted on the upper support 10 so that the upper end of the upper leg 10 can be pivotally connected to the upper support 10, A mount (30), leg support means (40) for supporting the leg (20) in a flared state; A mount horizontal holding means (50) for maintaining the mount (30) automatically horizontally and leg fixing means (60) for firmly fixing the leg (20) to the ground,
The upper support 10 includes three hinge portions 11 and a hinge hole 12 to which the upper ends of the legs 20 are rotatably connected at equal angular intervals,
The leg 20 includes a hinge portion 21 corresponding to the hinge portion 11 and having a hinge hole 22 corresponding to the hinge hole 12 and a hinge portion 21 inserted into the hinge hole 12, A pair of leg members 25 extending downward from the hinge unit 21 in the horizontal direction and spaced apart from each other in the horizontal direction, An upper leg 24 having a box-shaped guide hole 26 connected to the lower end of the leg member 25 and opened at the upper and lower ends thereof and a pair of leg members 25 And a leg adjusting screw (28) which is fastened to the guide (26) and whose tip is in close contact with the lower leg (27)
The leg support means (40) is a cylinder having a connecting piece (41) protruding from the inner surface of the guide (26) and a connecting piece (43a) connected to the connecting piece (41) by a connecting pin (42). The rod 43, the rod-shaped rod 44 whose outer end is slidably inserted into the cylindrical rod 43, and the cylindrical rod 43 are fastened so that the tip thereof is inside the cylindrical rod 43. Tightening screw 45 in close contact with the outer circumferential surface of the rod-shaped rod 44, handle 45a integrally coupled to the rear end of the tightening screw 45, and disposed corresponding to the inner end side of the rod-shaped rod 44 And a connecting ring 46 having a connecting piece 46a into which an connecting piece 44a provided at an inner end of the rod-shaped rod 44 is inserted into an outer circumferential surface thereof, and allowing the connecting pieces 44a and 46a to be relatively rotatable. It includes a removable connecting pin 47,
The mount horizontal holding means 50, the three-dimensional rotation support 51 is provided with a spherical inner peripheral surface A (51a) is inserted and fixed to the insertion space 13 installed in the upper support 10, the upper and lower ends are open, A liner 52 inserted into the spherical inner circumferential surface A 51a and provided with a spherical outer circumferential surface A 52a corresponding to the spherical inner circumferential surface A 51a and a spherical inner circumferential surface B 52b having a smaller curvature than the spherical outer circumferential surface A 52a; And a three-dimensional rotating body 53 inserted into the spherical inner circumferential surface B 52b and provided with a spherical outer circumferential surface B 53a corresponding to the spherical inner circumferential surface B 52b, and in a normal direction to the three-dimensional rotating support 51. Screwed into the three-dimensional rotating body fixing screw 54 and the three-dimensional rotating body 53 which is in close contact with the spherical outer peripheral surface A (52a) of the liner 52, and extends up and down The vertical holding rod 55 is fixedly coupled to the top at a right angle and extended downward to be inserted into the connection ring 46. It includes a weight 56 is fixedly coupled to the bottom of the support rod 55,
The leg fixing means 60 is a connector 61 fixed to the lower end of the lower leg 27, the lower leg fixing rod 62 is integrally coupled to the lower end of the connector 61, and the lower leg fixed A three-dimensional pivot support 63 integrally coupled to the lower end of the rod 62 and having a spherical outer circumferential surface 63a and a spherical inner circumferential surface 64a corresponding to the spherical outer circumferential surface 63a of the three-dimensional pivot support 63. The three-dimensional rotating body 64 having a), the coupling portion 65a coupled to the three-dimensional rotating body 64, and formed integrally extending from the lower end of the coupling portion 65a, the lower end is formed in a sharp shape A ground fixing member 65 having a plurality of ground fixing parts 65b, an upper dust cover 66 connected between a lower end of the connector 61 and an upper end of the three-dimensional rotating body 64, and the three Ground fixing device of the tripod during geodetic surveying comprising a lower dust cover (67) covered on the lower end of the dimensional rotating body (64).

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