KR101463911B1 - Height adjustment apparatus for staff in geodetic surveying instrument - Google Patents

Height adjustment apparatus for staff in geodetic surveying instrument Download PDF

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Publication number
KR101463911B1
KR101463911B1 KR1020140113121A KR20140113121A KR101463911B1 KR 101463911 B1 KR101463911 B1 KR 101463911B1 KR 1020140113121 A KR1020140113121 A KR 1020140113121A KR 20140113121 A KR20140113121 A KR 20140113121A KR 101463911 B1 KR101463911 B1 KR 101463911B1
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South Korea
Prior art keywords
staff
chuck
fixed
bearing
shaft
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KR1020140113121A
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Korean (ko)
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정태성
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(주)대한지적기술단
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Publication of KR101463911B1 publication Critical patent/KR101463911B1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/02—Rulers with scales or marks for direct reading
    • G01B3/04—Rulers with scales or marks for direct reading rigid
    • G01B3/08—Rulers with scales or marks for direct reading rigid extensible
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
    • G01C15/02—Means for marking measuring points
    • G01C15/06—Surveyors' staffs; Movable markers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)

Abstract

The present invention relates to a leveling elevator for leveling. In the present invention, the upper end spring supporting portion of the landing rod is supported at the lower end of the buffer spring, and the buffer spring is fixed to the bearing housing portion of the bearing housing fixed to the lower end of the lower chuck by a spring formed at the lower end of the rotary shaft, Even if vibrations or shocks generated in the vicinity of the staff are applied to the landing rod, the vibration is absorbed by the buffer springs, so that the vibration or impact of the surroundings is not transmitted to the staff, and the bearing housing, the rotating shaft, Since oil is injected into the housing to be accommodated, it is possible to more effectively absorb vibrations and impacts of the surroundings applied to the landing rod, so that the machine can accurately read the scale of the staff through the leveler, And the bearing housing portion of the bearing housing is provided with The outer race is press-fitted. The inner race of the bearing is press-fitted into the rotary shaft. The upper end of the buffer spring is relatively rotatably supported on the rotary shaft. The lower end of the buffer spring is supported relative to the landing rod Since the bearing housing and the housing are rotatably connected by the ring, the orientation of the staff can be changed by turning the staff in the state that the landing rod is on the ground, A bracket fixed to the upper end of the lower chuck, a drive shaft and a follower shaft rotatably installed on the bracket, a drive gear and a driven gear fixed to the drive shaft and the follower shaft and engaged with each other, A rack fixed to the inner wall surface of one side of the upper chuck and engaged with the pinion, An index pin which passes through the other end of the rotary arm so as to be slidable in the forward and backward direction and is elastically supported so as to be always projected forward by the elastic member, an index pin fixed to the rear surface of the bracket in a concentric manner with the drive shaft, And an index plate having a plurality of index pin holes to be inserted thereinto, and is adjustable in length without using any additional power, so that the length of the staff can be adjusted as needed The total weight of the star is greatly reduced, so that the spinal cord can be handled easily and effortlessly. The combination of the number of teeth and the pitch of the drive gear, the driven gear, the pinion and the rack, It is possible to adjust the interval of the scale one by one, so that the height control can be adjusted more efficiently It is.

Description

{Height adjustment apparatus for geodetic surveying instrument}

The present invention relates to a leveling elevator for leveling surveying in the field of geodetic surveying. More specifically, since the total weight of the staff is light because the power is not used, the elevation of the staff can be easily adjusted , One large scale can be adjusted by one space or several spaces, or a small scale can be adjusted by one space or several spaces, so that the height adjustment can be performed more efficiently, It is possible to protect the staff from external vibration or impact, and also to turn the target when the target spots change in the direction of the target. For leveling elevators and elevators for accurate measurement without error to be.

Generally, geodetic surveying should be done first for various civil engineering design and architectural design. Geodetic surveying is the measurement of horizontal distance, elevation difference and direction, determining the location of each measurement point, displaying it in figures or numerical values, and staking out all the activities in the field.

Levels in these geodetic surveys are measured using a star and a leveler to determine the height difference between two points. The accuracy is 5mm * S1 / 2 for a level 2 survey (where S is the one way distance, km.) is required.

13 is a view for explaining a method of measuring the level by using the staff 1 and a leveling instrument 2 such as a leveling machine.

In the first step, the spinal cord is placed on a ground reference point a0 at which the altitude is known, and the machine number is measured at a first observation point (b1) (2) Read the scale of staff (1).

In the second step, the spinal cord is moved to the first point a1 and the staff 1 is set up. The machine number changes the direction of the measuring instrument 2, such as a leveling machine, at the observation point b1, Read the star point scale at the first point via the measuring instrument (2). Here, the altitude of the first point is obtained from the altitude of the difference between the scale read from the ground reference point a0 and the first point a1 and the altitude of the ground reference point.

In the third step, the machine number moves to the second observation point b2 behind the first point a1 and the table spinal cord turns the staff 1 in place (first point) The machine number reads the star scale scale of the first point a1 from the second observation point b2 to the leveling machine.

In the fourth step, the spinal cord moves to the second point a2 to set up the stiff 1 and the machine number reads the stiff scale at the second point a2 at the second point b2. Here, the elevation of the second point is obtained from the difference in scale between the first point a1 and the second point a2 read from the second observation point b2.

In this way, while the staff (1) and the leveling machine (2) are continuously moved, the direction of the level machine at each point and each observation point is switched to read the scale, Obtain altitude.

At this time, the elevation difference of the first and second observation points (b1, b2) on which the surveying instrument (2) such as the reference point (a0) or the first and second points (a1, a2) The height of the staff must be adjusted according to the height of the staff. As shown in FIG. 14, the conventional staff is composed of two upper and lower chairs 1a and 2b, In order to adjust the height, the knot screw (not shown) holding the knob 1 with one hand and the lower chuck 1a and the upper chuck 1b are loosened, While holding the upper chuck 1b while holding the upper chuck 1b with the other hand and adjusting the height of the knuckle 1 and tightening the engaging screw for fixing the lower chuck 1a and the upper chuck 1b, The upper and lower chokes 1a and 1b must be combined in the height-adjusted state, Only it is magnified as there is a problem that the height adjustment process of the staff bother.

Also, as a prior art, a "leveling elevator for leveling" is disclosed in Korean Patent Registration No. 10-1349383 (Registered on April 21, 2014), in which the elevation of a staff can be adjusted by using a motor and a screw .

However, the above-mentioned prior art leveling staff control device uses the power of the motor, so that relatively heavy parts such as a battery for supplying power to the motor as well as the motor are required, which causes the total weight of the staff to be very heavy, The handling of the staff by the spinal cord becomes very inconvenient.

Therefore, it is required to develop a technique which can easily and effectively adjust the height while the total weight of the staff is light and the handling by the spinal cord is easy.

In addition, in the case of a conventional star, when a staff member standing on the ground in a geodetic surveying process is subjected to vibration or impact around the star, the star is shaken in a process of reading the staff's scale by a level distance, The calibration scale can not be accurately read, resulting in a measurement error.

Also, in the conventional step, in the process of changing the direction of the staff in the third step, the staff should be lifted from the floor to change the direction of the staff and then put the staff back to the original position The spinal cord often fails to accurately place the staff in the original position, resulting in a measurement error.

Therefore, it is required to develop a leveling device for leveling so that the position of the staff is not changed in the process of changing the direction of the staff.

In addition, since the conventional stapler 1 is provided with the grounding member 1c coupled to the lower end of the lower chainring 1a, since the staple 1 is made of steel or synthetic resin, If vibration or impact is applied to the staff from the ground in the process of setting up and surveying, the staff will be shaken and the accuracy of surveying will decrease.

Therefore, it is required to develop a technique for increasing the measurement accuracy by preventing vibration and shock from being shaken by vibration or shock even if vibration or shock is applied to the staff from the ground.

"Leveling survey" in Korean Patent Registration No. 10-1073942 (registered on October 10, 2011) "Level Measurement System to Minimize Error of Geodetic Survey Data", Korea Patent Registration No. 10-1227188 (Registered on February 21, 2013) Korea National Patent Registration No. 10-1233719 (Registered on Mar. 2, 2013) "National level reference point surveying device using image information acquisition in geodetic survey" "Staf bottom fixing device for leveling" of Korean Patent Registration No. 10-1208592 (Registered on November 29, 2012) "Leveling elevator height adjusting device" of Korean Patent Registration No. 10-1349383 (Registered on April 1, 2014)

Therefore, the object of the present invention is to provide a method for controlling the height of a staff member, which is easy to handle by the spinal cord, because the total weight of the staff is light because the power is not used, and the height of the staff can be easily adjusted, The small scale can be adjusted by one space or several spaces, so that the height adjustment can be performed more efficiently, and the staff can be protected from external vibration or shock generated in the vicinity of the staff during the level survey, If you change the direction of the target in place, you can turn the machine horizontally with the staff lowered to the ground without raising the level, so that the leveling machine can be pointed to the machine level. .

In order to achieve the above-mentioned object, the present invention provides an upper barrel having an upper end and an upper barrel, an upper barrel having an upper barrel and a lower barrel, A rotary cushioning landing means provided at the lower end of the lower chuck frame, the upper chucking base being inserted into the lower chuck and being adjustable in height and height by sliding and retracting; And a height adjusting means for adjusting the height of the staff consisting of the lower chuck and the upper chuck,

The rotary damper landing means includes:

A bearing housing having a coupling piece fixedly coupled to a lower surface of the lower chuck and a bearing receiving part integrally formed on a lower surface of the coupling piece; A bearing in which an out race is press-fitted into the inner peripheral surface of the bearing accommodating portion; A rotary shaft which is press-fitted into the inner race of the bearing and has a spring support portion at a lower end thereof; A cushion spring having an upper end rotatably supported on a spring support portion of the rotary shaft; A casing formed in a cylindrical shape having an opened upper surface and receiving the bearing receiving portion, having a through hole formed in a lower surface thereof and an oil injection hole formed in a peripheral wall thereof; A landing rod formed on an upper end of the spring support portion for supporting the lower end of the buffer spring relatively rotatably and having a landing portion landed on the ground; An oil injected into the casing; A cylindrical nipple body inserted into the oil injection hole of the casing, an opening / closing ball inserted into an outer end of the nipple main body, and a nipple inserted into the inside of the nipple main body to elastically support the opening / Main nipple with spring; And a ring having an inner circumferential portion inserted into a ring groove formed in an outer circumferential surface of the bearing accommodating portion and an outer circumferential portion inserted into a ring groove formed in an inner circumferential surface of the casing so that the casing and the bearing accommodating portion are relatively rotatably connected,

The height adjusting means includes:

A bracket having a pair of fixing plates fixed to opposite upper surfaces of the upper and lower chucks, and a bearing plate connecting the rear end of the fixing plate to the middle portion; A drive shaft rotatably supported on the bearing plate; A slave shaft rotatably supported on the bearing plate at a position above the drive shaft and extending through the rear surface of the upper end of the lower chuck to the inside of the upper chuck; A drive gear fixed to the drive shaft between the bearing plates; A driven gear fixed to the driven shaft and engaged with the drive gear; A pinion fixed to the distal end of the driven shaft within the upper chuck band; A rack fixed vertically up and down on one inner wall surface of the upper chuck band to engage with the pinion; A handle arm having one end fixed to a rear end of the drive shaft; An index pin extending through the other end of the handle arm so as to be slidable in forward and backward directions and elastically supported so as to protrude forward at all times by an elastic member and integrally formed with a handle at a rear end thereof; And an index plate fixed to the rear surface of the bracket and having a plurality of index pin holes into which the index pins are selectively inserted along the edges.

According to the leveling elevator of the present invention, the upper end spring supporting portion of the landing rod is supported at the lower end of the buffer spring, and the buffer spring is fixed to the bearing accommodating portion of the bearing housing fixed to the lower end of the lower chuck, Even if vibrations or shocks generated at the periphery of the staff are applied to the landing rod, the vibration and impact of the surroundings are not transmitted to the staff Since the oil is injected into the housing housing the bearing housing, the rotating shaft and the buffer spring, it is possible to more effectively absorb the vibration and impact around the landing rod, so that the machine can read the scale accurately .

According to the leveling elevator of the present invention, the bearing housing is fixed to the lower end of the lower chuck, the outer race of the bearing is press-fitted into the bearing housing of the bearing housing, and the rotary shaft is press- And the lower end of the buffer spring is supported so as to be rotatable relative to a landing rod passing through the housing, and the bearing housing and the housing are rotatably connected to each other by a ring The direction of the staff can be changed by turning the staff in a state where the staff is in contact with the ground, so that it is possible to reliably eliminate the measurement error due to the change of staff position.

According to the leveling elevator of the present invention, a bracket fixed to the upper end of the lower chuck, a drive shaft and a follower shaft rotatably mounted on the bracket, a drive gear fixed to the drive shaft and the follower shaft, A pinion fixed to the driven shaft, a rack fixed to one side of the inner wall surface of the upper chuck band and engaged with the pinion, a handle arm fixed at one end to the drive shaft, And an index plate having an index pin which is elastically supported so as to protrude forward and an index plate which is fixed to the rear surface of the bracket in a concentric relation to the drive shaft and has a plurality of index pin holes into which the index pins are selectively inserted, It is adjustable in length without using any additional power. The total weight of the stapler can be adjusted while the length is adjustable, so that the spinal cord can be handled easily and effortlessly. The scale can be adjusted by the desired scale according to the number of revolutions or rotation of the handle arm, It can be adjusted by one space or several spaces, or by a small scale or a few spaces, so that the height control can be adjusted more efficiently.

1 to 12 show a preferred embodiment of a leveling elevator for leveling according to the present invention,
1 is a front perspective view seen from a top surface direction,
2 is a front perspective view seen from the bottom direction,
3 is a rear perspective view seen from the top surface direction,
4 is a front exploded perspective view seen from the top surface,
5 is a front exploded perspective view seen from the bottom direction,
6 is an exploded bottom perspective view seen from the top surface,
7 is a longitudinal front view showing the rotary damper landing means,
8 is a longitudinal front view showing the driving gear and the driven gear of the height adjusting means,
9 is a longitudinal front view showing the pinion of the height adjusting means and the rack,
Fig. 10 is an enlarged cross-sectional view taken along the line A-A in Fig. 8,
Fig. 11 is an enlarged cross-sectional view taken along the line B-B in Fig. 8,
12 is a longitudinal view showing the operation of the index pin and the index plate,
13 is a view for explaining a method of measuring a level using a conventional star and a leveler,
And,
14 is a perspective view of a conventional stiff.

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

In the following description, the through holes through which various bolts or screws are passed, and the fastening holes through which various bolts or screws are fastened are shown in the drawings, but the reference numerals and explanations are omitted.

As shown in FIG. 1, the staff for geodetic survey according to the present embodiment includes an upper chuck 10 and a lower chuck 20 which are slidably and slidably combined and adjustable in height.

The lower chuck 10 located at the lower side is formed thicker than the upper chuck 20 positioned at the upper side.

Scales 11 and 21 are engraved on the upper and lower chucks 10 and 20 so that the machine number can be read by a leveler. The scales (11, 21) are composed of a large scale and a small scale. In the illustrated example, the interval S1 of one square of the large scale is five times larger than the interval S2 of one small interval of the small scale, but it is not necessarily limited thereto.

The upper chuck 20 is formed in an elongated cylindrical shape having upper, lower and rear open sides, and the upper chuck 20 is formed in an upper portion of the lower chuck 10, Is inserted into the chuck (10) and is adjustable in height and height by a slide retracting method.

At the lower end of the lower chuck 10, a rotary damper and landing means 30 is provided.

The rotary cushioning and landing means 30 includes a coupling piece 31a fixedly coupled to a lower surface of the lower chuck 10 and a bearing receiving portion 31b integrally formed on a lower surface of the coupling piece 31a A bearing housing (31); A bearing 32 into which an outer race is press-fitted into the inner peripheral surface of the bearing receiving portion 31b; A rotary shaft 33 which is press-fitted into the inner race of the bearing 32 and has a spring support portion 33a at a lower end thereof; A buffer spring 34 whose upper end is relatively rotatably supported by the spring support portion 33a of the rotary shaft 33; A casing 35 which is formed in a cylindrical shape having an opened upper surface and accommodates the bearing receiving portion 31b, has a through hole 35a formed in a lower surface thereof and an oil injection hole 35b formed in a peripheral wall thereof; A landing rod 36 having a spring support portion 36a for supporting the lower end of the buffer spring 34 relatively rotatably and having a land portion 36b landed on the ground; An oil (37) injected into the casing (35); A cylindrical nipple main body 38a inserted into the oil injection hole 35b of the casing 35, an opening and closing ball 38b inserted into the outer end of the nipple main body 38a, A main nipple 38 having a nipple spring 38c which is inserted into the opening and closing ball 38b to elastically support the opening and closing ball 38b to the outside end of the nipple main body 38a; And an outer peripheral portion is inserted into a ring groove 39b formed in an outer peripheral surface of the bearing receiving portion 31b and formed in an inner peripheral surface of the casing 35 so that the casing 35 and the bearing receiving portion 31b are relatively rotatably connected to each other.

A fixing screw 31c passing through the engaging piece 31a can be fastened to the lower surface of the lower chuck 10 so as to fix the engaging piece 31a to the lower surface of the lower chuck 10. [

The bearing 32 may be configured to press the outer race into the bearing receiving portion 31b to prevent idling, and a radial ball bearing may be used.

The rotary shaft 33 is press-fitted into the inner race of the bearing 32 so as not to rotate.

The cushion spring 34 may use a compression coil spring.

The landing rod 36 is provided with a lower end point (lower end point) to allow the staff to land the ground reference point a0, the first point a1, the second point a2, the third point a3, Shape).

The oil 37 functions to buffer the inside of the casing 35 and also functions to prevent corrosion of the bearings 32, the buffer springs 34 and the rings 39 provided in the casing 35 .

The main use nipple 38 may be a main use nipple that is typical for injecting the oil 37 into the casing 35.

The present invention further includes a height adjusting means (40) for adjusting the height of the staff consisting of the lower chuck (10) and the upper chuck (20).

In the following description, the left and right sides refer to the directions viewed from the rear of the staff.

The height adjusting means 40 includes a pair of fixing plates 41a fixed to both upper surfaces of the upper end of the lower chuck 10 and bearing plates 41b and 41c connecting the rear end of the fixing plate 41a to the middle portion A bracket 41 provided; A drive shaft (42) rotatably supported by the bearing plates (41b, 41c); A driven shaft 43 rotatably supported on the bearing plates 41b and 41c at an upper portion of the drive shaft 42 and extending through the rear surface of the upper end of the lower chuck 10 and into the upper chuck 20, ; A drive gear 44 fixed to the drive shaft 42 between the bearing plates 41b and 41c; A driven gear (45) fixed to the driven shaft (43) and engaged with the drive gear (44); A pinion 46 fixed to the tip end of the driven shaft 43 inside the upper chuck 20; A rack 47 fixed to the inner wall surface of one side of the upper chuck 20 so as to be vertically vertically engaged with the pinion 46; A handle arm (48) having one end fixed to the rear end of the drive shaft (42); An index pin 49 which is slidably passed through the other end of the handle arm 48 so as to be slidable in the forward and backward direction and which is elastically supported so as to always protrude forward by the elastic member 49b and has a knob 49a integrally formed at the rear end thereof; ); And an index plate (50a) having a plurality of index pin holes (50a) whose centers coincide with the center of the drive shaft (42) and are fixed to the rear surface of the bracket (41) and in which the index pins 50).

The fixing plate 41a is fixed to both upper surfaces of the upper chuck 10 by a fixing screw 41d while being in tight contact with both upper surfaces of the upper chuck 10.

The bearing plates 41b and 41c are formed with a drive shaft support hole 42a in which the drive shaft 42 is supported and a vertical axis support hole 43a in which the drive shaft 43 is supported.

A drive shaft through hole 42b through which the drive shaft 42 passes is formed in the center of the index plate 50 and a slave shaft through hole 42b through which the slave shaft 43 passes is formed on the upper rear surface of the lower sledge 10 43b are formed.

The rack 47 can be fixed to the upper chuck 20 by passing through the fixing screw 47a and fastening it to one inner wall surface of the upper chuck 20.

The index pin 49 is supported at one end of the handle arm 48 so as to be slidable in the forward and backward directions and the index pin 49 is fixed to the other end of the handle shaft 48, A spring housing 48b is formed to receive the resilient supporting member 49b.

The index pin 49 may be configured such that the stop ring 49c is engaged to insert the elastic member 49b between the spring housing 48b and the stop ring 49c.

The index plate 50 may be integrally formed on the rear surface of the bracket 41 or may be separately formed and coupled to the rear surface of the bracket 41 by a coupling screw (not shown).

The driving gear 44, the driven gear 45, the pinion 46, and the rack 47 are preferably made of a synthetic resin having a small specific gravity in order to minimize the weight of the entire star.

In the illustrated example, when the drive gear 44 is rotated by 1/2, the upper chuck 20 is configured to be raised and lowered by one large interval of the scales 11 and 21.

The number of teeth of the driving gear 44 and the driven gear 45 is 50 and 10 and the number of teeth of the pinion 46 is 50. The pinion 46 and the rack 47 have a pitch of one pitch And the index plate 50 is formed with ten index pin holes 50a on the index plate 50. In this case,

That is, when the pitches of the scales 11 and 21 of the lower chuck 10 and the upper chuck 20 are 10 mm and the pitches of one scale are 2 mm, And a length of one pitch of 2 mm.

When the drive gear 44 is rotated by 1/2 using the handle 49a of the index pin 49 coupled to the handle arm 48 by this combination, the driven gear 45 and the pinion 46 are rotated by 1 And the pinion 46 and the rack 47 are operated by 5 pitches, that is, 10 mm, so that the rack 47 and the upper chuck 20 coupled thereto are raised and lowered by 10 mm, The driven gear 45 and the pinion 46 are rotated by 1/50 and the pinion 46 and the rack 47 are operated by one pitch and side by 2 mm The rack 47 and the upper chuck 20 coupled thereto are configured to ascend and descend by a distance of 2 mm, which is a small interval.

The index pin 49 is inserted into the index pin hole 50a of the index plate 50 so as to protrude forward by the elastic member 49b as shown in FIG. The drive shaft 42 and the drive gear 44 are not rotated arbitrarily. When the handle 49a of the index pin 49 is pulled, the index pin 49 is rotated, as shown in FIG. 12 (b) And is configured to be able to rotate the handle arm 48, the drive shaft 42, and the drive gear 44 by being pulled out from the index pin hole 50a while moving backward against the elastic member 49b.

Hereinafter, the operation of the leveling elevator for leveling according to the present invention will be described.

As described in the background art of the invention, the leveling elevator for leveling according to the present invention is constructed in such a manner that the spinal cord catches the staff and the landing rod 36 is connected to the ground reference point a0, the first point a1, The machine is installed on the ground such as the second point (a2), the third point (a3), etc., and is used for the geodetic surveying by reading the scale of the staff using the leveler.

The upper end spring support portion 36a of the landing rod 36 is supported by the lower end of the cushion spring 34 and the cushion spring 34 is supported by a bearing fixed to the lower end of the lower chuck 10, Is supported by the spring support portion 33a formed at the lower end of the rotary shaft 33 press-fitted into the inner race of the bearing 32 press-fitted into the bearing receiving portion 31b of the housing 31. Therefore, Even when an impact is applied to the landing rod 36, the vibration and shock of the buffering spring 34 are not absorbed by the shock absorber spring 34, The scales 11 and 21 can be accurately read.

Since the oil 37 is injected into the casing 35 accommodating the bearing receiving portion 31b, the rotating shaft 33 and the cushioning spring 34, Can be absorbed more effectively.

On the other hand, as explained in the background of the invention, the number of machines moves to the second observation point b2 after the first point a1 and the table spinal cord turns the staff from its position (first point) In the third step where the machine reads the star scale scale of the first point (a1) from the second observation point (b2) to the level machine when the staff looks at the level machine, Since the staff can be turned by turning the staff (10, 20) while holding the landing rod (36) on the ground of the first point without having to raise the staff and put it back in place, It is possible to reliably exclude the measurement error due to the variation of the position of the probe.

The bearing housing 31 is fixed to the lower end of the lower chuck 10 and the outer race of the bearing 32 is inserted into the bearing receiving portion 31b of the bearing housing 31, The upper end of the buffer spring 34 is relatively rotatably supported on the rotary shaft 33 and the lower end of the buffer spring 34 is connected to the lower end of the buffer ring 34 Since the bearing receiving portion 31b and the casing 35 are rotatably connected to each other by the ring 39 so as to be relatively rotatable relative to the bearing rod 36, (10, 20) can be horizontally rotated.

A main oil hole 35b is formed in the outer peripheral surface of the casing 35 and a main use nipple 38 composed of a nipple main body 38a, an opening and closing ball 38b and a nipple spring 38c is provided in the main oil hole 35b The oil 37 injected into the casing 35 can be replenished.

Further, the height of the entire staff consisting of the lower chuck 10 and the upper chuck 20 can be adjusted by the height adjusting means 40.

At this time, it is not necessary to lift the lower chuck 10 and the upper chuck 20 from the ground, and the spinal cord is held by the lower chuck 10 and the land rods 36 are moved from the ground reference point a0 to the first point a1, It is possible to adjust the height of the staff by simply pushing or turning the rotary handles 48a and 48b to the left and right in a state of landing on the ground of the point a2 and the third point a3, The efficiency can be increased.

The elevation of the elevator can be controlled by adjusting the scale 11 of the lower chuck 10 and the scale 21 of the upper chuck 20 one by one and by continuously adjusting the scale.

The index pin 49 is always protruded forward by the elastic member 49b and remains inserted into the index pin hole 50a of the index plate 50. [

In this state, the index pin 49 is slidably coupled to the spring housing 48b of the handle arm 48 in the forward and backward directions, so that the handle arm 48, the drive shaft 42, and the drive gear 44 are arbitrarily rotated So that the upper chuck 20 does not arbitrarily move up and down.

In this state, when the table spinal cord holds the lower chuck 10 with one hand and pulls the handle 49a of the index pin 49 with the other hand, the index pin 49 moves backward against the elastic member 49b The drive shaft 44 and the handle arm 48 are rotated in the same direction as the index finger 50a of the index pin 50 while the spinal cord is pulled and held by the handle 49a of the index pin 49 .

When the drive gear 44 rotates, the driven gear 45 engaged therewith rotates and the pinion 46 fixed to the driven shaft 43 together with the driven gear 45 rotates and engages with the rack. The upper chuck 20 to which the rack 47 is coupled is raised or lowered.

The number of teeth of the driving gear 44 and the driven gear 45 is 50 and 10 and the number of teeth of the pinion 46 is 50. The pinion 46 and the rack 47 have a pitch of 1 pitch And the index plate 50 is formed with ten index pin holes 50a so as to form the index gear 50 and the drive gear 50. [ When the upper chuck 20 is configured to ascend and descend by one large interval of the graduations 11 and 21 at the time of half rotation of the index pin 49 of the handle pin 48, The driven gear 45 and the pinion 46 are rotated by 1/10 of the rotation of the drive gear 44 by using the pinion 49 and the pinion 46 and the rack 47 are rotated by 1/10, The rack 47 and the upper chuck 20 coupled to the upper chuck 20 are raised by a distance of 10 mm which is one interval between the large graduations and when the driving gear 44 is rotated 1/10, The pinion 46 is rotated by 1/50, The pinion 46 and the rack 47 are operated by one pitch and the side 2 mm so that the rack 47 and the upper chuck 20 coupled thereto are raised and lowered by 2 mm,

Further, when the driving gear 44 is rotated once, the upper chuck 20 is raised and lowered by 10 mm, which is the interval of two large graduations.

If the force that pulls the handle 49a of the index pin 49 is removed after the upper chuck 20 is raised and lowered to adjust the height of the staff, the index pin 49 is pressed against the elastic member 49b The index pin 49 is inserted into the index pin hole 50a of the index plate 50 so that the index pin 49, the handle arm 48, the drive shaft 42, and the drive gear 44 can not rotate arbitrarily So that the height of the staff is maintained.

The index pin 50 and the index pin 50 can precisely adjust the upper chuck 20 by a small graduation interval or a large graduation interval of the graduations 11 and 21 in the process of adjusting the elevation of the staff .

Therefore, in adjusting the elevation of the staff, it is possible to raise or lower the space by one space of the large scale or to move up and down by one space of the small scale, so that it is possible to efficiently control the height according to the situation.

In the case of storing or transporting the staff, the space required for storage and transportation can be minimized by adjusting the length of the top of the lower chuck 10 and the top of the upper chuck 20 to the shortest length.

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, 20: ladder 30: rotary damper landing means
31: Bearing housing 31b: Bearing housing part
32: bearing 33: rotating shaft
34: buffer spring 35: casing
36: landing rod 37: oil
38: main nipple 39: ring
40: height adjusting means 41: bracket
42: drive shaft 43:
44: drive gear 45: driven gear
46: Pinion 47: Rack
48: handle arm 49: index pin
50: Index plate

Claims (1)

A lower chuck 10 having an upper end opened and a lower end closed and having a scale 11 engraved on its front side and an elongated barrel having upper and lower ends and rear openings, The upper chuck 20 is inserted into the lower chuck 10 to adjust the height of the lower chuck 10 and the lower chuck 10 and the rotary chucking landing means 30); And a height adjuster 40 for adjusting the height of the staff consisting of the lower chuck 10 and the upper chuck 20,
The rotary damper landing means (30)
A bearing housing 31 having a coupling piece 31a fixedly coupled to a lower surface of the lower chuck 10 and a bearing receiving portion 31b integrally formed on a lower surface of the coupling piece 31a; A bearing 32 into which an outer race is press-fitted into the inner peripheral surface of the bearing receiving portion 31b; A rotary shaft 33 which is press-fitted into the inner race of the bearing 32 and has a spring support portion 33a at a lower end thereof; A buffer spring 34 whose upper end is relatively rotatably supported by the spring support portion 33a of the rotary shaft 33; A casing 35 which is formed in a cylindrical shape having an opened upper surface and accommodates the bearing receiving portion 31b, has a through hole 35a formed in a lower surface thereof and an oil injection hole 35b formed in a peripheral wall thereof; A landing rod 36 having a spring support portion 36a for supporting the lower end of the buffer spring 34 relatively rotatably and having a land portion 36b landed on the ground; An oil (37) injected into the casing (35); A cylindrical nipple main body 38a inserted into the oil injection hole 35b of the casing 35, an opening and closing ball 38b inserted into the outer end of the nipple main body 38a, A main nipple 38 having a nipple spring 38c which is inserted into the opening and closing ball 38b to elastically support the opening and closing ball 38b to the outside end of the nipple main body 38a; And an outer peripheral portion is inserted into a ring groove 39b formed in an outer peripheral surface of the bearing receiving portion 31b and formed in an inner peripheral surface of the casing 35 so that the casing 35 and the bearing receiving portion 31b are relatively rotatably connected to each other,
The height adjusting means (40)
A bracket 41 provided with a pair of fixing plates 41a fixed to both upper surfaces of the upper end of the lower chuck 10 and bearing plates 41b and 41c connecting the rear end of the fixing plate 41a to the middle portion; A drive shaft (42) rotatably supported by the bearing plates (41b, 41c); A driven shaft 43 rotatably supported on the bearing plates 41b and 41c at an upper portion of the drive shaft 42 and extending through the rear surface of the upper end of the lower chuck 10 and into the upper chuck 20, ; A drive gear 44 fixed to the drive shaft 42 between the bearing plates 41b and 41c; A driven gear (45) fixed to the driven shaft (43) and engaged with the drive gear (44); A pinion 46 fixed to the tip end of the driven shaft 43 inside the upper chuck 20; A rack 47 fixed to the inner wall surface of one side of the upper chuck 20 so as to be vertically vertically engaged with the pinion 46; A handle arm (48) having one end fixed to the rear end of the drive shaft (42); An index pin 49 which is slidably passed through the other end of the handle arm 48 so as to be slidable in the forward and backward direction and which is elastically supported so as to always protrude forward by the elastic member 49b and has a knob 49a integrally formed at the rear end thereof; ); And an index plate (50a) having a plurality of index pin holes (50a) whose centers coincide with the center of the drive shaft (42) and are fixed to the rear surface of the bracket (41) and in which the index pins 50). ≪ / RTI >
KR1020140113121A 2014-08-28 2014-08-28 Height adjustment apparatus for staff in geodetic surveying instrument KR101463911B1 (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101797996B1 (en) * 2017-05-08 2017-12-12 대한민국 Staff Apparatus
KR102081917B1 (en) 2019-09-09 2020-02-26 이완복 Height adjustment system for staff in geodetic surveying instrument
KR102081915B1 (en) 2019-09-09 2020-02-26 이완복 Accuracy geodetic surveying method with staff
KR102240846B1 (en) * 2020-10-28 2021-04-16 주식회사 한빛파워 Measurement control commercial grade item dedication apparatus of nuclear power plant
KR102280157B1 (en) 2021-04-23 2021-07-22 주식회사 고산자 Height adjustment system for staff in surveying instrument
KR102309902B1 (en) * 2021-07-02 2021-10-07 주식회사 지오앤 Geodetic surveying system for performing geodetic surveying based on a reference point using total station
KR102319250B1 (en) 2021-06-03 2021-11-01 주식회사 우주공간정보 Stabilizer system for level survey
KR102345068B1 (en) 2021-05-18 2021-12-31 (주)미도지리정보 Stabilizer system for geodetic surveying

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101073942B1 (en) * 2010-01-28 2011-10-18 (주)해양정보기술 Staff for leveling
KR101227188B1 (en) * 2012-08-07 2013-01-28 주식회사 한성유아이 Leveling system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101073942B1 (en) * 2010-01-28 2011-10-18 (주)해양정보기술 Staff for leveling
KR101227188B1 (en) * 2012-08-07 2013-01-28 주식회사 한성유아이 Leveling system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101797996B1 (en) * 2017-05-08 2017-12-12 대한민국 Staff Apparatus
KR102081917B1 (en) 2019-09-09 2020-02-26 이완복 Height adjustment system for staff in geodetic surveying instrument
KR102081915B1 (en) 2019-09-09 2020-02-26 이완복 Accuracy geodetic surveying method with staff
KR102240846B1 (en) * 2020-10-28 2021-04-16 주식회사 한빛파워 Measurement control commercial grade item dedication apparatus of nuclear power plant
KR102280157B1 (en) 2021-04-23 2021-07-22 주식회사 고산자 Height adjustment system for staff in surveying instrument
KR102345068B1 (en) 2021-05-18 2021-12-31 (주)미도지리정보 Stabilizer system for geodetic surveying
KR102319250B1 (en) 2021-06-03 2021-11-01 주식회사 우주공간정보 Stabilizer system for level survey
KR102309902B1 (en) * 2021-07-02 2021-10-07 주식회사 지오앤 Geodetic surveying system for performing geodetic surveying based on a reference point using total station

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