KR101356755B1 - Apparatus for adjusting height of tripod in geodetic surveying instrument - Google Patents

Abstract

The present invention relates to an apparatus for adjusting the height of a tripod for a geodetic surveying instrument. The present invention comprises an upper support; three legs having the upper part thereof connected to the upper support to be able to rotate, thus able to be folded and unfolded; a mount connected to the upper support and having a surveying instrument mounted thereon; a leg support tool for supporting the legs as the legs are unfolded; and a mount levelling and height adjusting tool for automatically levelling the mount and adjusting the height of the mount. The present invention enables a user to conduct a geodetic survey without delay because the user can adjust the height of the surveying instrument via a simple operation without separately adjusting three legs constituting the tripod having the surveying instrument mounted thereon. And the present invention enables the user to install the tripod and conduct a survey swiftly by supporting the legs on the ground so that the top surface of the mount having the surveying instrument mounted thereon can be levelled automatically even if the tripod is installed on a slope, not to mention on the horizontal ground because the surveying instrument is levelled by only mounting the surveying instrument on the mount after installing the tripod.

Description

Apparatus for adjusting height of tripod in geodetic surveying instrument}

The present invention relates to a tripod height adjustment device for level surveying, and more specifically, without adjusting the length of the three legs constituting the tripod to which the surveying device is mounted one by one can easily adjust the height of the surveying equipment without delay. In addition to allowing leveling work, the tripod is installed 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 level even when the tripod is mounted on a level surface as well as a sloped surface. It is related to a tripod height adjusting device for leveling surveying, whereby the leveling equipment is leveled by simply mounting the measuring device on the mount, so that the tripod can be quickly installed and surveyed.

For geodetic surveying, measurement equipment (measurement equipment) such as levelers, VRS (virtual reference points) and RTKs are used, and these precision measurement devices are generally mounted on a tripod so as to be positioned at a certain height on the ground.

In the following description, the measuring apparatus and the measuring apparatus are the same and the selection is made according to the context.

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 instrument mount which is coupled to the upper part of the upper frame and to which the measuring instrument is mounted.

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 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.

In level surveying, the height of the leveling instrument mounted on a tripod has a great influence on the leveling accuracy.

However, the conventional leveling tripod is configured to adjust the length of the legs to adjust the height of the surveying instrument mounted on the top of the tripod, in this case, because the three legs must be adjusted manually, the work is cumbersome and surveying work There is a delay.

Therefore, it is necessary to develop a tripod height adjusting device for leveling surveying so that the height of the surveying instrument can be adjusted by simple operation without adjusting the length of the legs to adjust the height of the surveying instrument mounted on the tripod.

In addition, the conventional surveying tripod has to adjust the level of the surveying instrument installed on the upper surface while rotating the mount in the horizontal and vertical direction with respect to the upper support from the ground landing on the ground, the installation of the surveying equipment is cumbersome and horizontal There is a problem that takes a long time to do.

Therefore, there is a need to develop a tripod height adjustment device for level surveying to easily adjust the level of the mount on which the surveying device is installed.

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"

Therefore, an object of the present invention is to adjust the height of the surveying instrument with a simple operation without adjusting the length of the three legs constituting the tripod on which the surveying instrument is mounted, the tripod for level surveying so that the leveling work can be carried out without delay. To provide a height adjustment device.

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 leveling tripod adjustment device for leveling that allows the surveyor to be leveled by simply mounting the device 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 on which the device is mounted, leg support means for supporting the leg in an open state, mount horizontal maintenance and height adjustment means for automatically maintaining the mount in a horizontal state and adjusting the height of the mount; The upper support includes three hinge parts and hinge balls at equally spaced intervals at which upper ends of the legs are rotatably connected, and the legs correspond to the hinge parts and hinge parts formed with hinge holes corresponding to the hinge holes. A hinge pin inserted into the hinge hole to connect the hinge part to be rotatable relative to the hinge hole; The upper leg has a pair of leg members extending downwardly in two horizontally at intervals in the horizontal direction, a box-shaped guide coupled to the lower end of the leg member, the upper and lower ends of which are opened, and through the guide. A lower leg that is slidably inserted in the longitudinal direction between the pair of leg members, a leg adjusting screw fastened to the guide to be in close contact with the lower leg, and a landing member coupled to the lower end of 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 and the tip of the cylindrical rod is in close contact with the outer circumferential surface of the rod-shaped rod; A connection ring having a handle integrally coupled to the rear end of the yarn, a connection piece disposed corresponding to the inner end side of the rod-shaped rod, and having a connection piece inserted at an inner end of the rod-shaped rod on an outer circumferential surface thereof; It includes a removable connecting pin to be connected, the mounting horizontal maintenance and height adjustment means, the three-dimensional rotating support is provided with a spherical inner peripheral surface A is inserted and fixed in the insertion space installed on the upper support and the upper and lower ends, and the A spherical outer circumferential surface A inserted into the spherical inner circumferential surface A and having a spherical outer circumferential surface A corresponding to the spherical inner circumferential surface A and a spherical inner circumferential surface B having a curvature smaller than the spherical inner circumferential surface A, and a spherical outer circumferential surface B inserted into the spherical inner circumferential surface B and corresponding to the spherical inner circumferential surface B are provided. Screwed in a normal direction to the three-dimensional rotating body and the three-dimensional rotating support and its tip is pressed against the spherical outer peripheral surface A of the liner. A three-dimensional rotating body fixing screw and vertically extending through and vertically penetrating the three-dimensional rotating body and the mount is fixed to the right angle at the top and extended downward and inserted into the connection ring, and the vertical holding A weight that is fixedly coupled to the lower end of the pipe, the height adjustment rod is inserted into the vertical holding pipe so as to be lifted up and down is coupled vertically to the mount, and formed on the outer circumferential surface of the height adjustment rod, arranged up and down A plurality of ascending regulating ratchet protrusions having a locking jaw and a lower inclined guide surface, a plurality of descending regulating ratchet protrusions formed on the other side of the outer circumferential surface of the height adjusting rod and having a lower horizontal locking jaw and an upper inclined guide surface, and the vertical maintenance pipe Is coupled to the top of the flange portion and the flange portion through which the height adjustment rod penetrates up and down Ratchetpool casing provided between the inner and outer cylindrical portion and the inner and outer cylindrical portion extending upwardly from the inner circumferential portion and the outer circumferential portion and having a cover plate through which the height adjustment rod penetrates up and down, and is installed inside the ratchetpool casing. The handle is formed on the spring portion and integrally formed on the outer end of the pole portion and the stem portion extending to the ratchet protrusion for regulating the ratchet protrusion and bent at the outer end of the stem A ratchet forol for regulating regulation, and an elastic member surrounding the stem and installed between the outer cylindrical portion and the spring bearing piece to elastically support the ratchet forol for regulating the regulating ratchet in the direction of catching the ratchet protrusion for the regulating regulation. Installed on the inside of the ratchet forol casing and the pawl portion hanging on the ratchet protrusion for regulating descent and the fabric A ratchet portol for lowering regulation provided with a spring receiving piece integrally formed at the outer end of the part, a stem integrally formed at the spring receiving piece and extending outward, and a handle bent at the outer end of the stem; Wrapping is provided between the outer cylindrical portion and the spring receiving piece provides a leveling tripod height adjustment device comprising an elastic member for elastically supporting the ratchet forol for regulating the rise in the direction of the pole portion is caught in the ratchet projection for the downward regulation. .

According to the leveling tripod height adjustment device for leveling of the present invention is equipped with a mount level maintenance and height adjustment means for adjusting the height of the mount can be quickly, easily adjust the height of the mount without having to adjust the length of the three legs one by one As a result, the leveling work can be carried out without delay.

In addition, according to the leveling tripod height adjustment device for leveling of the present invention is provided with a mount level maintenance and height adjustment means for automatically maintaining the mount in a horizontal state, when the leg lands on the ground, the mount level maintenance and height adjustment means When the upper surface of the mount is maintained horizontally and the tripod is installed by supporting the legs by the leg support means, and then the survey equipment is mounted on the mount, the survey equipment is kept horizontal so that the installation and surveying work of the tripod can be proceeded quickly. It works.

1 to 10 shows a preferred embodiment of the tripod height adjustment device for leveling measurement according to the present invention,
1 is an exploded perspective view,
2 is an exploded perspective view of the height adjusting means,
3 is a perspective view showing a state of folded legs,
4 to 6 show a process of installing a tripod on a horizontal ground,
Figure 4 is to release the three-dimensional rotating body of the three-dimensional rotating body of the mounting horizontal maintenance and height adjustment means, separating the cylindrical rod and rod-shaped rod from the connecting ring, showing the state that the tripod landed on the horizontal ground Perspective,
5 is a perspective view showing a state in which the three-dimensional rotating body of the three-dimensional rotating body of the mounting horizontal maintenance and height adjustment means,
6 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;
7 is a partial cross-sectional front view showing a state in which the tripod is installed in a state fixed to the horizontal ground,
8 to 10 illustrate a process of installing a tripod on an inclined surface,
Figure 8 is to release the three-dimensional rotating body of the mounting horizontal maintenance and height adjustment means and the three-dimensional rotating body of the leg fixing means, separating the cylindrical rod and rod-shaped rod from the connecting ring and open the tripod to land on the inclined ground Partial cross section front view showing the state
9 is a perspective view showing a state where the lower ends of the plurality of lower sharpening type landing pieces are landed on the ground, and the three-dimensional rotating body of the mount horizontal support and the height adjusting means and the three-dimensional rotating body of the leg fixing means are fixed;
10 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;
11 is a partial cross-sectional front view showing a state in which the height is lowered by the mount level holding and height adjustment means;
And
12 is a partial cross-sectional front view showing a state in which the height is increased by the mount horizontal holding and height adjusting means.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the tripod height adjustment device for leveling measurement according to the present invention will be described in detail.

Leveling tripod height adjustment device for leveling according to the present invention, as shown in Figures 1 to 9, the upper support 10 and the upper support 10 is installed so that the upper end is rotatably coupled to open and close. Three legs 20 to be coupled to the upper supporter 10 and a mount 30 to which the surveying device is mounted, and leg support means 40 for supporting the legs 20 in the open state; And a mount horizontal holding and height adjusting means 60 for adjusting the height of the mount 30 while maintaining the mount 30 in a horizontal state automatically.

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 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 A lower leg 27 which is slidably inserted in the longitudinal direction, a leg adjusting screw 28 which is fastened to the guide hole 26 and whose tip is in close contact with the lower leg 27, And a landing member (29) joined thereto.

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.

It is preferable that the leg adjusting screw 28 be a screw having a handle such as a butterfly screw so that an operator can manually tighten or loosen the work without a separate tool.

The lower end of the landing member 29 is formed in a sharp shape and the upper end of the landing member 29 is formed with an insertion portion 29a into which the lower end of the lower leg 27 is inserted. The lower leg 27 and the landing member 29 are fixed to the lower leg 27 with a fixing screw 29b passing through the insertion portion 29a while the lower end of the lower leg 27 is inserted into the insertion portion 29a, As shown in Fig.

The mount 30 forms a screw hole 31 in the center thereof, and forms a screw portion 57a at the upper end of the height adjusting rod 57 by screwing the screw hole 31 and the screw portion 57a. Mount 30 on the top of the height adjustment bar 57 can be combined integrally. At this time, the nut 32 is fastened to the screw portion 57a so that the mount 30 is not detached from the height adjusting rod 57 arbitrarily.

In the illustrated example, a plurality of holes 33 for mounting a surveying instrument (not shown) are provided in the form of holes 33, but this may be any one according to the type of surveying instrument to be mounted. 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 maintenance and height adjustment means 50, the three-dimensional rotation support 51 is provided with a spherical inner peripheral surface A (51a) is inserted and fixed in the insertion space 13 installed on the upper support 10, the upper and lower ends are open. And a liner having a spherical inner circumferential surface B 52b inserted into the spherical inner circumferential surface A 51a and having a curvature smaller than the spherical outer circumferential surface A 52a and the spherical outer circumferential surface A 52a corresponding to the spherical inner circumferential surface A 51a ( 52, a three-dimensional rotating body 53 is inserted into the spherical inner peripheral surface B (52b) and provided with a spherical outer peripheral surface B (53a) corresponding to the spherical inner peripheral surface B (52b), and the three-dimensional rotating support (51) Screwed in the normal direction to the three-dimensional rotating body fixing screw 54 and the three-dimensional rotating body 53 vertically penetrating the upper and lower ends of the liner 52 in close contact with the spherical outer peripheral surface A (52a) Extends to the top and the mount 30 is fixedly coupled at right angles to the vertical extension extending downward is inserted into the connection ring 46 And (55), and a weight is fixed to the lower end of the vertically holding pipes (55) weight (56),

A height adjusting rod 57 inserted into the vertical holding pipe 55 so as to be lifted and lowered, and having an upper end coupled to the mount 30 vertically;

A plurality of upward regulating ratchet protrusions 58 formed on the outer circumferential surface of the height adjusting rod 57 and having an upper horizontal locking jaw 58a and a lower inclined guide surface 58b;

A plurality of descending regulating ratchet protrusions 59 formed on the other side of the outer circumferential surface of the height adjusting rod 57 and having a lower horizontal locking jaw 59a and an upper inclined guide surface 59b;

An inner and outer cylinder coupled to an upper end of the vertical holding pipe 55 and extending upwardly from an inner circumferential portion and an outer circumferential portion of the flange portion 61 and the flange portion 61 penetrating up and down, respectively. Ratchet pawl casing provided with a cover plate 64 between the parts 62 and 63 and the inner and outer cylindrical parts 62 and 63 and through which the height adjusting rod 57 penetrates up and down ( 60),

A spring receiving piece (65b) which is installed inside the ratchet portol casing (60) and integrally formed at the outer end of the pole portion (65a) and the pole portion (65a) which is caught by the ratchet protrusion (58) for regulating lift; A ratchet pole for rising regulation provided with a stem (65c) integrally formed on the spring receiving piece (65b) and a handle (65d) bent at an outer end of the stem (65c);

Wrapped around the stem (65c) and is installed between the outer cylindrical portion 63 and the spring receiving piece (65b) the ratchet potol for rising regulation in the direction in which the pawl portion (65a) is caught by the ratchet protrusion (58) for rising regulation. An elastic member 66 supporting elasticity,

A spring receiving piece 67b which is installed inside the ratchet portol casing 60 and integrally formed at the outer end of the pole part 67a and the pole part 67a which is caught by the ratchet protrusion 59 for regulating the lowering; A lower regulating ratchet pole (67) having a stem (67c) integrally formed on the spring receiving piece (67b) and a handle (67d) bent at an outer end of the stem (67c);

Wrapping the stem (67c) and is installed between the outer cylindrical portion 63 and the spring receiving piece (67b) the ratchet portol for the rising regulation in the direction in which the pole portion (67a) is caught in the ratchet protrusion (59) for regulating the lowering It is configured to include an elastic member 68 to elastically support.

A through hole 53b is formed in the three-dimensional rotating body 53 so as to pass through the upper end of the vertical holding pipe 55 through the through hole 53b, and to vertically couple the mount 30 to the vertical holding pipe ( In the state that the upper surface of the three-dimensional rotating body 53 is in close contact with the lower surface of the nut (32) fastened to 55) by fastening the fixing nut (53c) to the screw portion (55a) formed on the upper end of the vertical maintenance pipe 55 By being in close contact with the lower surface of the three-dimensional rotating body 53, the three-dimensional rotating body 53 can be integrally fixed to the upper end of the vertical holding pipe (55).

The vertical holding pipe 55 and the weight 56 form a threaded portion 55b at the lower end of the vertical holding pipe 55 and a screw hole 56a at the upper surface of the weight 56 to form these threaded portions 55a. And the screw hole 56a can be integrally coupled.

In coupling the flange portion 61 and the vertical holding pipe 55 of the ratchet portol casing 60, a coupling hole 61a is drilled in the center of the flange portion 61, and a vertical maintenance pipe is coupled to the coupling hole 61a. The upper end of the 55 is press-fitted or formed with an internal threaded portion (not shown) on the inner circumferential surface of the coupling hole 61a, and an external threaded portion (not shown) is formed on the upper end of the vertical retaining pipe 55 to form these female threaded portions. It can also be combined by screwing the male screw portion.

The inner cylindrical portion 62 is formed with a hole portion guide hole (62a, 62b) through which the pore portion (65a, 67a) of the ratchet pool (65) for regulating the rising and falling ratchet fool (67), The outer cylindrical portion 63 is inserted with the stem 65c, 67c of the ratchet fool 65 for rising regulation and the ratchet fool 67 for lowering regulation, and the cut portions 63a, which support the lower half of the stems 65c, 67c. 63b) is formed so that the upper part is opened, and the support piece 64a, 64b which is inserted in the upper half of the cutouts 63a, 63b in the edge of the said cover plate 64, and is supported by the upper half of the stem 65c, 67c. The downward extension is formed, and a through hole 64c through which the height adjusting rod 57 penetrates is formed at the center portion.

The cover plate 64 and the outer cylindrical portion 63 may be coupled by fastening a plurality of coupling screws 64d passing through the cover plate 64 to the outer cylindrical portion 63.

The raised portion 65a of the rising regulating ratchet fool 65 is formed in a shape corresponding to the upper horizontal locking jaw 58a and the lower inclined guide surface 58b of the rising regulating ratchet protrusion 58, and the lower portion The pawl portion 67a of the regulating ratchet fool 67 is formed in a shape corresponding to the lower horizontal locking jaw 59a and the upper inclined guide surface 59b of the lower regulating ratchet protrusion 59.

Hereinafter will be described the action of the tripod height adjustment device for leveling measurement according to the present invention.

3, the leg is opened in the folded state as shown in Figure 3, removable type connecting the connecting piece (44a) of the rod-shaped rod 44 constituting the leg support means 40 and the connecting piece (46a) of the connecting ring 46 When the connecting pin 47 is pulled out, the cylindrical rod 43 and the rod-shaped rod 44 connect the connecting piece 43a of the cylindrical rod 43 and the connecting piece 41 of the guide port 28 by their own weight. The connecting pin 42 rotates downward, and the connecting ring 46 is lowered along the vertical holding pipe 55 by its own weight and seated on the weight 56.

The 3D rotating body fixing screw 54 which is fastened to the 3D rotating support 51 constituting the mount horizontal holding and height adjusting means 50 is relaxed, and its tip is the spherical outer circumferential surface A of the liner 52. 52a) so that the landing member 29 is landed on the ground in a state where the three-dimensional rotating body 53 is released to freely three-dimensional rotation by spaced apart from 52a) (see Fig. 4).

At this time, since the fixing of the three-dimensional rotating body 53 to which the vertical holding pipe 55 is fixed is released, the vertical holding pipe 55 and the weight 56 are three-dimensional rotating body 53 by their own weight. Ratchetpool casing 60 fixedly coupled to the upper end of the vertical holding pipe 55 and the weight 56, and the vertical holding pipe 55, ratchetpool (58, 59) installed in the ratchetpool casing 60, vertical The height adjustment rod 57 inserted into the holding pipe 55 and the mount 30 fixedly coupled to the upper end of the height adjustment rod 57 are integrally three-dimensionally rotated so that the vertical maintenance pipe 55 and the height adjustment rod ( 57 is maintained vertical and the mount 30 coupled to the top of the height adjustment rod 57 at a right angle is horizontal (see FIG. 4).

In this state, when the three-dimensional rotating body fixing screw 54 fastened to the three-dimensional rotating support 51 is tightened so that its tip is in close contact with the spherical outer circumferential surface A 52a of the liner 52, the shape of the liner 52 is The inner circumferential surface B 52b presses the spherical outer circumferential surface B 53a of the three-dimensional rotating body 53, and the three-dimensional rotating body 53 is fixed to the three-dimensional rotating support 51 through the liner 52. The vertical maintenance pipe 55, the height adjustment bar 57, and the like are maintained vertical, and the mount 30 is maintained horizontal (see FIG. 5).

The connecting piece 44a of the rod-shaped rod 44 is lifted by the connecting ring 46 by raising the height of the guide hole 26 provided at the lower end of the upper leg 24 along the vertical holding pipe 55. Slide to the position that can be inserted into the connecting piece (46a) of the), and loosen the tightening screw 45 fastened to the cylindrical rod 43 to stretch the cylindrical rod 43 and rod-shaped rod 44 While connecting the rod-shaped rod 44 to the connecting ring 46 by adjusting the length by inserting 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, Tighten the captive screw 45 fastened to the cylindrical rod 43 so that the tip thereof comes into close contact with the outer circumferential surface of the rod-shaped rod 44 so that the leg 20 has the cylindrical rod 43 and the rod-shaped rod 44 and the connection ring. Supported by the vertical holding pipe 55 through 46 (see Figs. 6 and 7).

In this state, since the top surface of the mount 30 is kept horizontal, a surveying device can be mounted on the mount 30 to immediately start a survey operation.

As described above, when the tripod is installed on the horizontal ground, the length of each leg 20 may be set in the same state without adjusting the length. However, when the tripod is mounted on the inclined ground, the tripod is supported. The length of the leg 20 is adjusted differently according to the height of the ground to make the upper surface of the mount 30 substantially 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 landing points of the landing members 29 coupled to each of 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 instead of an equilateral triangle. By the action of the three-dimensional rotating support 51, the three-dimensional rotating body 53, the vertical holding pipe 55 and the weight 56, the vertical holding pipe 55 and the height adjustment rod 57 is made vertical The top surface of the mount 30 is fixedly coupled to the upper end of the height adjustment rod (57) (see Fig. 8).

Thereafter, the fixing process of the three-dimensional rotating body 53 and the supporting process of the leg 20 are roughened in the same manner as in the case of installing on the horizontal surface described above. Installed to be able to proceed with the surveying operation (see FIGS. 9 and 10).

Next, the height adjustment process of the mount 30 will be described.

As shown in FIG. 11, when the handle 65d of the ratchetpool 65 for upward regulation is pulled out while the mount 30 is adjusted low, the handle is pulled through the stem 65c and the spring receiving piece 65b. The raised portion 65a integrally formed at 65d is released from the raised ratchet protrusion 58, and the rising regulation is released (see dotted line in FIG. 11).

When the mount 30 is lifted in this state, the height adjusting rod 57 is raised together with the mount 30, and at this time, the falling portion 67a of the falling portion ratchet potol 67 is caught. The ratchet protrusion 59 is composed of the lower horizontal locking jaw 59a and the upper inclined guide surface 59b, so that the cam portion of the lower portion 67a and the upper inclined guide surface 59b of the lower regulating ratchet forol 67 is controlled. The lower regulating ratchet fool 67 is pushed outward while compressing the elastic member 68, and the lower regulating ratchet fool 67 is compressed at the moment when the fool portion 67a deviates from the upper inclined guide surface 59b. By the elastic force of the member 68 is caught again between the ratchet projections 59 for the lowering regulation, while repeating this process, the height adjustment rod 57 is made to raise the height of the mount 30 as shown in FIG. Likewise, it can be adjusted high.

As shown in FIG. 12, when the handle 67d of the ratchet poleol 67 for lowering regulation is pulled out while the mount 30 is highly adjusted, the handle is held through the stem 67c and the spring receiving piece 67b. The raised portion 67a integrally formed at 67d is released from the ratchet protrusion 59 for regulating falling, so that the rising regulation is released (see dotted line in FIG. 12).

In this state, when the mount 30 is pressed, the height adjusting rod 57 is lowered together with the mount 30. At this time, the rising portion for latching the pole portion 65a of the ratchet potol 65 for the rising regulation is caught. Since the ratchet protrusion 58 is constituted by the upper horizontal locking jaw 58a and the lower inclined guide surface 58b, the ratchet protrusion 58 is raised by the cam action of the pole portion 65a and the lower inclined guide surface 58b of the ratchet forol 65 for upward regulation. When the regulating ratchet fool 65 is pushed outward while compressing the elastic member 66, the elastic member in which the upward regulating ratchet fool 65 is compressed at the moment when the fool portion 65a deviates from the lower inclined guide surface 58b. By the elastic force of the 66 is caught between the ratchet protrusions 58 for the upward regulation again, while repeating this process, the height adjustment rod 57 is made to descend so that the height of the mount 30 as shown in FIG. Can be adjusted low.

The embodiments described above are just an example, and various modifications and changes may be made by those skilled in the art without departing from the essential characteristics of the present invention.

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 maintenance and height adjustment means
51: three-dimensional rotating support 52: liner
53: 3D rotating body 54: 3D rotating body fixing screw
55: vertical holding pipe 56: weight
57: height adjustment rod 58: ratchet protrusion for rising regulation
59: ratchet protrusion for descending regulation 60: ratchet portol casing
65: ratchet fool for regulating the rise 66: elastic member
67: ratchet fool for regulating descent 68: elastic member

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; The mount 30 is automatically maintained in a horizontal state, and also includes a mount horizontal maintenance and height adjusting means 50 for adjusting the height of the mount,
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 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 A lower leg 27 which is slidably inserted in the longitudinal direction, and a leg adjusting screw 28 which is fastened to the guide hole 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 maintenance and height adjustment means 50, the three-dimensional rotation support 51 is provided with a spherical inner peripheral surface A (51a) is inserted and fixed in the insertion space 13 installed on the upper support 10, the upper and lower ends are open. And a liner having a spherical inner circumferential surface B 52b inserted into the spherical inner circumferential surface A 51a and having a curvature smaller than the spherical outer circumferential surface A 52a and the spherical outer circumferential surface A 52a corresponding to the spherical inner circumferential surface A 51a ( 52, a three-dimensional rotating body 53 is inserted into the spherical inner peripheral surface B (52b) and provided with a spherical outer peripheral surface B (53a) corresponding to the spherical inner peripheral surface B (52b), and the three-dimensional rotating support (51) Screwed in the normal direction to the three-dimensional rotating body fixing screw 54 and the three-dimensional rotating body 53 vertically penetrating the upper and lower ends of the liner 52 in close contact with the spherical outer peripheral surface A (52a) Extends to the top and the mount 30 is fixedly coupled at right angles to the vertical extension extending downward is inserted into the connection ring 46 55, a weight 56 fixedly coupled to the lower end of the vertical holding pipe 55, and is inserted into the vertical holding pipe 55 so as to be lifted and lowered vertically to the mount 30. Combined height adjustment rod 57 and the plurality of rising ratchet protrusions formed on the outer circumferential surface side of the height adjustment rod 57 and having a plurality of upward horizontal locking jaw (58a) and the lower inclined guide surface (58b) 58) and a plurality of lower regulating ratchet protrusions 59 formed on the other side of the outer circumferential surface of the height adjusting rod 57 and having a lower horizontal locking jaw 59a and an upper inclined guide surface 59b. An inner and outer cylindrical portion coupled to an upper end of the holding pipe 55 and extending upwardly from an inner circumferential portion and an outer circumferential portion of the flange portion 61 through which the height adjusting rod 57 penetrates up and down ( 62 and 63 and the inner and outer cylindrical portions 62 and 63 to cover the height adjustment Ratchet potol casing (60) provided with a cover plate (64) through which the rod (57) penetrates up and down, and is installed inside the ratchet potol casing (60), and a pole portion caught by the ratchet protrusion (58) for regulating the upward movement. The stem 65c and the stem 65c which are formed integrally with the spring bearing piece 65b and the spring bearing piece 65b which are integrally formed at the outer end of the 65a and the pole part 65a and extend outward. And a ratchet pole for lifting regulation 65 having a handle 65d formed at an outer end of the cuff and surrounding the stem 65c and installed between the outer cylindrical portion 63 and the spring receiving piece 65b. The elastic member 66 for elastically supporting the ratchet fool 65 for upward regulation in the direction in which the pole part 65a is caught by the ratchet protrusion 58 for upward regulation, and is installed in the ratchet portol casing 60 and the It is formed integrally with the outer portion of the pole portion 67a and the pole portion 67a caught by the ratchet protrusion 59 for descending regulation. For lowering regulation provided with a stem 67c integrally formed on the spring receiving piece 67b and the spring bearing piece 67b and extending to the outside and a handle 67d bent at the outer end of the stem 67c. Wrapped between the ratchet potol 67 and the stem 67c and installed between the outer cylindrical portion 63 and the spring bearing piece 67b in the direction in which the pole portion 67a is caught by the ratchet protrusion 59 for lowering regulation. Leveling tripod height adjustment device comprising an elastic member 68 for elastically supporting the ratchet fool 67 for the rising regulation.

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