KR101941080B1 - Channel investigation surveying apparatus improved in precision - Google Patents

Abstract

The present invention relates to a channel investigation surveying apparatus improved in precision and, more specifically, relates to a channel investigation surveying apparatus improved in precision, which improves precision with respect to channel investigation for surveying to be accurately performed, and further, enables a laser surveying device to be stably supported from a laser surveying device installation stand.

Description

{CHANNEL INVESTIGATION SURVEYING APPARATUS IMPROVED IN PRECISION}

The present invention relates to a waterway surveying instrument with improved accuracy in the field of waterway surveying technology, and more particularly, to a waterway surveying instrument which improves precision for waterway surveying so that accurate measurements can be made, The accuracy of which is improved.

In general, waterway surveying refers to surveying to create sea charts by observing water depths, geology, topography, etc. for sea, river, lake,

For safe navigation of the ship near the shore it is necessary to perform a waterway survey near the shore.

Conventionally, the vessel moved the sea water while dragging an underwater detector equipped with an echo sounder to perform the water channel measurement.

However, since the ship moves while dragging the underwater detector, it is not suitable to perform the waterway measurement near the shore, and the fishermen approach the acoustic echo sounder, thereby causing an error in the sea surface topography measurement.

In addition, we used the terrestrial laser instrument to measure the shore from the shore, or the ship to the terrestrial laser instrument, and then to measure the shore from the shore.

Conventionally, since the waterway survey or the coastline survey is separately measured by the separate equipment as described above, the surveying operation is cumbersome, and accordingly, a need for a surveying device capable of performing both the waterway survey and the coastline survey together is steadily arising.

As a conventional technique in which such a problem is partially improved, Korean Patent Registration No. 10-1704663 (Jul. 02, 2017) discloses a " surveying instrument for waterway surveying ".

However, since the vertical support is screwed to the fastening hole formed in the horizontal mount, the vertical support can be easily swung by an external force and the like, There is a problem that the stable support state of the instrument is difficult to maintain.

Korea Patent Registration No. 10-1704663 (Feb. 20, 2017) 'Surveying instrument for waterway survey for precise update of the undersea map'

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a laser measuring instrument, And to provide a waterway surveying instrument with improved accuracy.

The problems to be solved by the present invention are not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, the present invention provides a waterway surveying apparatus with improved accuracy, comprising a main body 11 having a receiving space 11a formed therein, a saddle 12 provided at an upper portion of the main body 11, A water moving means (10) provided with a water supply means An acoustic sounding device 80 installed below the water moving means 10 for measuring the water depth; First and second buoyancy mechanisms (20, 20 ') facing each other on one side and the other side of the water moving means (10); A pneumatic pressure generator (40) installed in the accommodation space (11a) for supplying air to the first and second buoyancy mechanisms (20, 20 ') or sucking air from the first and second buoyancy mechanisms (20, 20'); A horizontal support 61 having a plurality of fastening holes 61a and having a front end movably installed on the saddle 12, a vertical support 62 screwed to the fastening hole 61a and vertically installed, A laser instrument mounting base (60) having a horizontal mount (63) installed at the top of the vertical support (62); And a laser instrument (90) provided on the horizontal mount (63) for measuring a coastal terrain, wherein the laser instrument is mounted on the laser instrument mount (60) so that the laser instrument The supporting unit 200 includes horizontal supporting means 210 for supporting the rear end of the horizontal support 61 from the main body 11; Vertical support means (220) for supporting the vertical support (62) from the horizontal support means (210); And between the horizontal support means 210 and the saddle 12 while being supported by the main body 11 and between the both ends of the horizontal support table 61 while moving the horizontal support table 61 smoothly The horizontal support means 210 has a 'U' shape with a front end opened, and includes a coupling member 211 fitted to the rear end of the horizontal support member 61; A support bar 212 extending downward from a lower portion of the coupling member 211; And a pressing member 213 having an upper portion opened to be screwed up to a lower portion of the support bar 212 so as to be able to move up and down and a lower plate 214 to be mounted on the lower portion of the body 11, (220) includes a fixing bar (221) formed upwardly from the coupling member (211); A fixing ring 222 which is coupled to the outside of the vertical support 62 so as to be raised and lowered; A connecting rod 223 whose front end is connected to the stationary ring 222 and whose rear end passes through the stationary bar 221; A fixing member 224 screwed to the rear end of the connection rod 223 and fixing the connection rod 223 to the fixing bar 221; And a spring 225 coupled to the outside of the connecting rod 223 so as to be positioned between the stationary bar 221 and the stationary ring 222.

According to the present invention, there is an effect that the measurement can be accurately performed by improving the accuracy with respect to the waterway irradiation.

Further, there is an effect that the laser instrument can be stably supported from the laser instrument mounting base.

The effects of the present invention are not limited to those mentioned above, and other solutions not mentioned may be clearly understood by those skilled in the art from the following description.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a partial front sectional view showing a waterway surveying apparatus with improved accuracy according to the present invention. Fig.
FIG. 2 is a partially enlarged cross-sectional view of the acoustic sounding apparatus in FIG. 1. FIG.
3 is a partial plan sectional view of the acoustic sounding apparatus in FIG.
4 is a front sectional view showing a first and a second buoyancy mechanisms in a waterway surveying apparatus with improved accuracy according to the present invention.
5 is a plan view showing a state in which the first and second buoyancy mechanisms are deployed in the waterway surveying apparatus with improved accuracy according to the present invention.
FIG. 6 is a view showing a first and second buoyancy mechanisms in a waterway surveying apparatus with improved accuracy according to the present invention.
Fig. 7 is a partial side sectional view showing a waterway surveying apparatus with improved accuracy according to the present invention. Fig.
8 is a partially enlarged cross-sectional view of the laser instrument mounting base in FIG.
Figs. 9 to 13 are views showing an operating state of the water-tunnel surveying apparatus with improved accuracy according to the invention.
14 is a side view showing a state in which a supporting portion is provided in a water-tunnel surveying apparatus with improved accuracy according to the present invention.
15 is a side sectional view showing the horizontal supporting means and the vertical supporting means in Fig.
Fig. 16 is a side cross-sectional view showing the movement supporting means in Fig. 14. Fig.
And
17 is a side cross-sectional view showing a state in which the lid is closed in Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 8, a waterline surveying apparatus with improved accuracy according to the present invention includes a water moving means 10, an acoustic sounding device 80, a rotary vane 100, an ultrasonic generator 110, The first and second buoyancy mechanisms 20 and 20 ', the first and second winch devices 30 and 30', the pneumatic pressure generator 40, the control unit 50, the laser instrument mounting bracket 60, And a laser instrument 90.

The water moving means 10 has a main body 11 and a saddle 12, and moves the water phase.

The main body 11 has a receiving space 11a formed therein.

The saddle 12 is provided with a slide portion 12a and a fixing bracket 12b formed at one side of the saddle 12 and having a fastening hole 12b1 formed therein, .

The water moving means 10 has a structure for water movement such as a propulsion device for allowing the water movement means 10 to move the water phase and a steering device for changing the direction of the water movement means 10. [

The acoustic echo canceller 80 has a fastening mechanism 81, an echo sounder main body 82 and an echo sounder 83.

The fastening mechanism (81) is detachably installed in the lower portion of the water moving means (10). In this embodiment, the fastening mechanism 81 is threadedly fastened to the lower portion of the water moving means 10.

The sounder / sounder main body 82 is rotatably installed at a lower portion of the fastening mechanism 81 and has a receiving portion 82a opened downward.

The acoustic echo canal 83 is installed in the receiving portion 82a of the sounding echo canal main body 82 to measure the depth of the water and forms a general shape used for an undersea topographic survey.

The rotary vane 100 has a panel shape, and is formed of a plurality of rotary vanes 100 and is installed radially around the acoustic echo canceller main body 82.

The plurality of ultrasonic generators 110 are provided around the acoustic echo canceller main body 82 and are installed between adjacent rotary vanes 100 to output ultrasonic waves.

The ultrasonic generator 110 outputs ultrasonic waves in a band that the fish dislikes. For example, the ultrasonic generator 110 is set to irregularly output frequencies within the range of 23 to 160 kHz.

The first and second buoyancy mechanisms 20 and 20 'include first and second buoyant bodies 21 and 21', a second buoyant body 22 and 22 ', a third buoyant body 23 and 23' 24 ', and fourth buoyant bodies 25, 25', respectively, so as to face each other on one side and the other side of the water moving means 10.

The first buoyant bodies 21 and 21 'have insertion spaces 21a and 21a' formed therein and communicating with the insertion spaces 21a and 21a ' And air inlet openings 21b and 21b 'opened to the outside.

One end of the first buoyant body 21 or 21 'is installed in the receiving space 11a of the main body 11 and the other end of the first buoyant body 21 or 21' As shown in Fig.

The first buoyant bodies (21, 21 ') have a plate-like outer shape.

The second buoyant bodies 22 and 22 'are formed with insertion spaces 22a and 22a' opened in one direction inside.

The second buoyant bodies 22 and 22 'are provided such that one ends thereof are laterally movable in the insertion spaces 21a and 21a' of the first buoyant bodies 21 and 21 ' Is protruded to the side of the first buoyant body 21, 21 'with the other end passing through the first buoyant body 21, 21'.

The second buoyant bodies 22 and 22 'have a plate-like outer shape.

The third buoyant bodies 23 and 23 'are provided with air moving spaces 23a and 23a' which are formed so as to open in one direction inside thereof and a third buoyant bodies 23 and 23a 'which communicate with the air moving spaces 23a and 23a' 23 'provided at the other end of the nozzle unit 23'.

The third buoyant bodies 23 and 23 'are provided so as to be laterally movable in the insertion spaces 22a and 22a' of the second buoyant bodies 22 and 22 ', and the third buoyant bodies 23 and 23' Is protruded laterally of the second buoyant body 22, 22 'through the other end of the second buoyant body 22, 22'.

The third buoyant body (23, 23 ') has a plate-like outer shape.

The valves 24 and 24 'are electronic valves and are installed in the nozzle portions 23b and 23b' of the third buoyant body 23 and 23 '.

The fourth buoyant body 24,24'is provided on the nozzle portions 23b and 23b'of the third buoyant body 23,23'and the valve body 24,24'is opened when the third buoyant body 23 23 'of the first, second, and third nozzles 23, 23'.

The fourth buoyant members 24 and 24 'are in the form of a wrinkle bag and have elasticity.

The first and second winding devices 30 and 30 'are provided in the accommodation space 11a of the main body 11 with the winding wires 31 and 31' and the winding mechanisms 32 and 32 ', respectively.

The other ends of the winding wires 31 and 31 'are inserted through the insertion spaces 21a, 22a, 21a' and 22a ' , 21 '.

When the external force acting on the unwound winding wires 31, 31 'disappears, the winding wires 31, 31' are loosened or wound around the winding wires 31, 31 ' ).

The winding mechanisms 32 and 32 'are conventional for winding and unwinding the winding wires 31 and 31', and a detailed description thereof will be omitted.

The air pressure generating device 40 is installed in the receiving space 11a of the main body 11 and is inserted into the insertion spaces 21a and 21a 'of the first buoyant bodies 21 and 21' through air inlets 21b and 21b ' Air is supplied to the insertion spaces 22a and 22a 'of the first and second buoyant bodies 22 and 22' and the air movement spaces 23a and 23a 'of the third buoyant bodies 23 and 23' The insertion spaces 21a and 21a 'of the bodies 21 and 21', the insertion spaces 22a and 22a 'of the second buoyant bodies 22 and 22', the air movement of the third buoyant bodies 23 and 23 ' And suck air from the spaces 23a and 23a '.

The air pressure generating device (40) includes a fan to generate air pressure. Since the first and second buoyancy mechanisms 20 and 20 'are supplied with air, it is easier to generate buoyancy when they are deployed.

The control unit 50 controls the opening and closing of the valves 24 and 24 'to control the air supply to the fourth buoyant bodies 25 and 25' of the first and second buoyancy mechanisms 20 and 20 '.

The control unit 50 is preferably installed in the main body 11 and controls the valves 24 and 24 'while communicating wired or wireless with the valves 24 and 24'.

The laser instrument mounting base 60 is equipped with a horizontal support 61, a vertical support 62 and a horizontal mount 63.

The horizontal support 61 has a plurality of fastening holes 61a, and a front end thereof is movably installed on the slide portion 12a of the saddle 12.

The vertical support 62 is threaded at its periphery and screwed into the coupling hole 61a of the horizontal support 61 to be vertically installed.

The horizontal mounting table 63 has a plate shape and is installed at the upper end of the vertical support table 62.

The fastening member 70 is formed of a bolt or the like and fastened to the fastening hole 12b1 of the fastening bracket 12b and the fastening hole 61a of the horizontal support 61 to fasten the horizontal support 61 to the saddle 12 And is detachably fixed to the fixing bracket 12b.

The laser measuring instrument 90 is a land laser scanner system (RIEGL LMS-Z420i), which is composed of a long distance 3D scanner and a high quality digital camera (NICON-D20) interlocked with the long distance 3D scanner (refer to Korean Patent No. 10-1559488).

The laser instrument 90 can be understood as a known laser instrument used for coastline surveying. The laser instrument 90 is installed on the horizontal mount 63 of the laser instrument mount 60 to measure the shoreline.

The operation of the water-tunnel surveying apparatus with improved accuracy according to the present invention will be described with reference to FIGS. 9 to 13 as follows.

The operator drives the water moving means 10 to move the waterfront to be surveyed. At this time, the echo sounder 83 of the echo sounding apparatus 80 measures the undersurface topography as shown in FIG. 9, and the information thus measured is stored in a separate DB and then used to update the existing undersea map.

On the other hand, when the water moving means 10 moves as described above, the acoustic sounding apparatus main body 82 rotates as the water hits against the rotary vane 100. At this time, the ultrasonic generator 110 outputs ultrasound waves that the fish dislikes around the echo sounder 83 as shown in FIG. Therefore, the fish can not easily approach the surroundings of the acoustic sounding device 80, so that the measurement operation through the acoustic sounder 83 can be performed more accurately. 10, the ultrasonic wave generator 110 rotates along the sounding sounding apparatus main body 82, so that ultrasonic waves can be output to a wider area.

The operator can use the survey to measure the topography of the coastline and to use it as an aid to create coastal charts through waterway surveying. In the present invention, the shoreline measurement is performed as follows.

The operator drives the water moving means 10 to place the water moving means 10 on the coastal waterfront facing the coastal terrain to be measured.

At this time, if the water moving means 10 is not leveled properly by the waves, the operator drives the pneumatic pressure generator 40 to blow the first and second buoyancy mechanisms 20 and 20 '.

As shown in FIG. 11, the first and second buoyancy mechanisms 21, 22, 23, 21 ', 22', and 23 'are unfolded in the first and second buoyancy mechanisms 20 and 20' The water moving means 10 is positioned more stably in the water phase.

12, the operator pulls out the horizontal support 61 inserted into the slide part 12a to the outside and then pushes the vertical support 62 in the same direction as the fastening hole 61a of the horizontal support 61 ), And install it in the vertical direction. At this time, the worker can adjust the position of the vertical support 62 by installing a vertical support 62 on any one of the plurality of fastening holes 61a of the horizontal support 61. When the laser instrument mounting table 60 is installed as described above, the laser instrument 90 installed on the laser instrument mounting table 60 can be installed more stably on the water moving means 10. [

Thereafter, the operator measures the shoreline through the laser instrument 90.

Here, when the water moving means 10 is moved after the shoreline is measured, the operator drives the pneumatic pressure generating stand 40 to move the first and second buoyancy mechanisms 20, 20 ' 3 The air supplied to the buoyant bodies 21, 22, 23, 21 ', 22', 23 'is supplied to the first, second and third buoyant bodies 21, 22, 23, 21 ', 22', 23 '.

Since the first and second buoyancy mechanisms 20 and 20 'are pulled by the first and second winding devices 30 and 30', the first and second buoyancy mechanisms 20 and 20 ' So that the start of the water moving means 10 can be facilitated. In this embodiment, the first, second and third buoyancy bodies 21, 22, 23, 21 ', 22', 23 'of the first and second buoyancy mechanisms 20, 20' (10).

On the other hand, as shown in Fig. 11, when the first, second and third buoyancy bodies 21, 22, 23, 21 ', 22', 23 'of the first and second buoyancy mechanisms 20, 20' The operator can control the opening and closing of the respective valves 24 and 24 'of the first and second buoyancy mechanisms 20 and 20' via the control unit 50, , Air can be introduced into a part of each of the fourth buoyant members 25 and 25 'of the two bending mechanisms 20 and 20' A part of the fourth buoyant bodies 25, 25 'bulges, and the horizontal movement of the water moving means 10 can be maintained more precisely.

The present invention is advantageous in that when approaching the undersea topography, access to the fish is prevented and the undersea topography can be more precisely measured.

In addition, the water depth is measured with respect to the coast while moving along the coast through the water moving means (10), and the water movement means (10) is used to move the coast region to measure the topography of the coastline, Waterway surveying and coastal line topography can be used to create more accurate charts for the coast.

 Further, in using the water moving means 10 for maneuverability, the water moving means 10 disposed at the measurement position can maintain the horizontal more stably, so that more accurate measurement can be performed.

The waterline surveying apparatus with improved accuracy according to the present invention further includes a support portion 200 for stably supporting the laser instrument 90 from the laser instrument mounting table 60 as shown in Figs.

The supporting part 200 prevents the laser measuring instrument mounting table 60 from being stably supported from the main body so as to prevent damage due to external force and so on so that the mounting state of the laser measuring instrument 90 can be stably maintained from the laser measuring instrument mounting table 60 .

The support portion 200 includes horizontal support means 210 for supporting the rear end of the horizontal support 61 from the main body 11, vertical support means 220 for supporting the vertical support 62 from the horizontal support means 210, And is supported on the main body 11 so as to be positioned between the support means 210 and the saddle 12 so as to support between the both ends of the horizontal support 61 and to move smoothly when the horizontal support 61 is moved. (230).

The horizontal support means 210 includes a coupling member 211 fitted to the rear end of the horizontal support 61, a support bar 212 extending downward from the lower portion of the coupling member 211, And a pressing member 213 which is screwed to a lower portion of the main body 212 and is formed at a lower portion thereof to be mounted on the main body 11.

The engaging member 211 is fitted into the rear end of the horizontal support 61 in a 'C' shape in which the front end is opened.

The supporting bar 212 is fixed to the lower portion of the coupling member 211 at its upper portion and extends in the direction of the main body 11, and a thread is formed at the outer peripheral surface thereof.

The pressing member 213 has a cylindrical shape with an open top, and a screw thread is formed on the inner circumferential surface thereof and is screwed to the lower outside of the support bar 212.

The support plate 214 is integrally formed at the lower portion of the pressing member 213 and is brought into close contact with the main body 11 while being lowered together with the pressing member 213 tightening.

The horizontal support means 210 can be maintained in a state of being coupled to the horizontal support 61 as the support plate 214 is brought into close contact with the main body 11. [

The support plate 214 is lifted and lowered together with the release of the pressing member 213 and separated from the main body 11 so that the horizontal support means 210 is separated from the horizontal support table 61.

The support plate 214 may be provided with a non-slip member (not shown) on the bottom surface thereof.

The slip prevention member may be made of silicone or rubber and is pressed between the support plate 214 and the main body 11 so that the horizontal support means 210 is stably supported on the horizontal support table 61, do.

The vertical supporting means 220 includes a fixing bar 221 formed upwardly from the engaging member 211, a fixing ring 222 which is coupled to the outside of the vertical support 62 so as to be able to move up and down, A connecting rod 223 connected to the connecting rod 222 and having a rear end passing through the fixing bar 221, a fixing member 224 screwed to the rear end of the connecting rod 223 and fixing the connecting rod 223 to the fixing bar 221, And a spring 225 coupled to the outside of the connecting rod 223 so as to be positioned between the fixed bar 221 and the stationary ring 222.

The fixing bar 221 is in the form of a rectangular plate whose lower portion is fixed to the engaging member 211 and whose upper portion extends upward.

It is preferable that a plurality of fixing rings 222 can be coupled in the longitudinal direction of the vertical support 62, and the inner circumference is circular and the outer circumference is rectangular.

The connecting rod 223 is threaded on the outer circumferential surface, and the fixing member 224 is screwed to the connecting rod 223 while a thread is formed on the inner circumferential surface.

The spring 225 shrinks and relaxes according to the shaking of the vertical support 62 due to an external force, thereby buffering the impact and smoothly returning the vertical support 62 to the original state.

The vertical support means 220 may further include a pressure plate 226 coupled to the outside of the connection rod 223 so as to be positioned between the spring 225 and the fixing member 224.

The pressure plate 226 ensures stable contact with the spring 225.

The moving support means 230 includes a casing 231 extending upward from the main body 11 and having an open upper portion, a support plate 232 accommodated inside the casing 231, a support plate 232 rotatably connected to the support plate 232 A plurality of rollers 233 for supporting the horizontal support 61 and allowing the movement of the rollers 233 and the support plate 232 to be smoothly moved while being rotated together with the movement of the horizontal support, And a support spring 234 which is received and supports the support plate.

The casing 231 has a rectangular shape with an open top and protects the support spring 234 received in the main body 11 while being positioned on the rear side of the saddle 12.

The support spring 234 stably supports the support plate 232, while shrinks and relaxes due to an external force generated by the movement of the horizontal support 61, thereby cushioning the impact.

The casing 231 is formed with guide holes 231a extending in the vertical direction on the front and rear sides and the support plate 232 is protruded to the outside of the casing 231 through the guide holes 231a at the front and rear ends A guide projection 232a is formed.

The moving support means 230 may further include a locking member 235 that adjusts or locks up and down the speed of the support plate 232 while being screwed with the guide protrusion 232a.

The moving support means 230 may further include a lid 236 for opening and closing the upper portion of the casing 231.

The lid 236 is hinged to the upper part of the casing 231, so that the upper part of the casing 231 can be opened and closed according to the rotation.

That is, when the horizontal support 61 is supported by the cover 236, the upper portion of the casing 231 is opened by the rotation of the cover 236 so that the roller 233 protrudes outward to stably support the horizontal support 61 .

In contrast, when the horizontal support 61 is pulled into the saddle 12, the cover 236 closes the upper part of the casing 231 in accordance with the rotation so that the roller 233 is not exposed to the outside, And prevents foreign substances or the like from being introduced into the inside of the casing 231 from the outside.

Here, the lid 236 can be kept closed on the casing 231 by various known types of locking devices. Accordingly, the lid 236 may not be opened by the elastic force of the support spring 234. [

The support portion 200 can stably support the laser instrument mounting table 60 from the main body so as to prevent breakage or the like due to external force and to prevent the laser instrument mounting base 60 from being installed Can be stably maintained.

As described above, the present invention is not limited to the above-described embodiments, but can be applied to a water surveying and surveying apparatus having improved accuracy in accordance with the present invention. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

10: water moving means 20, 20 ': first and second buoyancy mechanisms
30, 30 ': first and second winding devices 40: pneumatic generating device
50: control unit 60: laser instrument installation board
70: fastening member 80: acoustic sounding device
90: laser instrument 100: rotating blade
110: ultrasonic generator 200: support
210: horizontal support means 211: coupling member
212: support bar 213: pressing member
214: support plate 220: vertical support means
221: stationary bar 222: stationary ring
223: Connecting rod 224: Fixing member
225: spring 230: moving support means
231: casing 232: support plate
233: roller 234: spring

Claims (1)

(10) having a main body (11) having a receiving space (11a) formed therein and a saddle (12) provided on the upper part of the main body (11);
An acoustic sounding device 80 installed below the water moving means 10 for measuring the water depth;
First and second buoyancy mechanisms (20, 20 ') facing each other on one side and the other side of the water moving means (10);
A pneumatic pressure generator (40) installed in the accommodation space (11a) for supplying air to the first and second buoyancy mechanisms (20, 20 ') or for sucking air from the first and second buoyancy mechanisms (20, 20');
A horizontal support 61 having a plurality of fastening holes 61a and having a front end movably installed on the saddle 12, a vertical support 62 screwed to the fastening hole 61a and vertically installed, A laser instrument mounting base (60) having a horizontal mount (63) installed at the top of the vertical support (62); And
1. A waterway surveying instrument with improved accuracy comprising a laser instrument (90) installed on a horizontal mount (63) for surveying coastal terrain,
Further comprising a support portion (200) for stably supporting the laser instrument (90) from the laser instrument mounting base (60)
The support portion
Horizontal supporting means (210) for supporting the rear end of the horizontal support (61) from the main body (11);
Vertical support means (220) for supporting the vertical support (62) from the horizontal support means (210); And
The horizontal supporting member 61 is provided on the main body 11 so as to be positioned between the horizontal supporting means 210 and the saddle 12 while supporting between the both ends of the horizontal supporting member 61, Support means 230,
The horizontal support means (210)
An engaging member 211 having a 'C' shape with a front end opened and fitted to the rear end of the horizontal support 61;
A support bar 212 extending downward from a lower portion of the coupling member 211; And
And a pressing member 213 having an upper portion opened to be screwed up to a lower portion of the supporting bar 212 so as to be lowered and a lower plate 214 to be mounted on the lower portion thereof,
The vertical support means (220)
A fixing bar 221 formed upwardly from the coupling member 211;
A fixing ring 222 which is coupled to the outside of the vertical support 62 so as to be raised and lowered;
A connecting rod 223 whose front end is connected to the stationary ring 222 and whose rear end passes through the stationary bar 221;
A fixing member 224 screwed to the rear end of the connection rod 223 and fixing the connection rod 223 to the fixing bar 221; And
And a spring (225) coupled to the outside of the connecting rod (223) so as to be positioned between the stationary bar (221) and the stationary ring (222).

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