KR101470917B1

KR101470917B1 - Apparatus for dual fixing staff in geodetic surveying

Info

Publication number: KR101470917B1
Application number: KR20140119013A
Authority: KR
Inventors: 김대연
Original assignee: 동아항업주식회사
Priority date: 2014-09-05
Filing date: 2014-09-05
Publication date: 2014-12-10

Abstract

The present invention relates to a dual fixture for leveling. According to the present invention, there is provided a double fixing apparatus for level measurement comprising vertical holding means including a single shaft member provided on the upper end of a lower chuck, a single shaft supporting dual shaft member, a biaxial support and a pull rod, When the spinal cord grips the handle bar and lifts the landing piece of the landing fixing member at the lower end of the stiff so that it does not touch the ground, the staff automatically maintains the vertical position. If the landing piece is landed on the ground in this state, So that the staff can always be installed vertically and correctly. When the handle bar is fixed to the floor by the second buffer and ground fixing means provided at the lower end of the handle bar of the vertical holding means, Even if you do not hold it, the staff will remain in a vertical position so that the spinal column can perform other tasks required for leveling, The upper end of the landing fixing member is fixed to the lower end of the cushioning spring at the lower end of the cushion rod and the cushioning spring is fixed to the lower end of the rotation shaft which is pressed into the inner race of the bearing inserted into the bearing accommodating portion of the bearing housing fixed to the lower end of the lower chuck, The first and second shock absorbers and the first and second shock absorbers are provided in the housing for receiving the bearing housing, the rotary shaft, and the shock absorber, The vibration and impact are not absorbed by the first and second cushioning and ground fixing means and transmitted to the staff, so that the machine number can accurately read the scale of the staff through the leveler, The bearing housing is fixed to the lower end of the bearing, and the bearing outers of the bearing are press- The lower end of the buffer spring is fixed to the upper end of a landing fixing member passing through the housing, and the lower end of the buffering spring is fixed to the upper end of the landing fixing member. Since the part 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 stationary member is landed and fixed on the ground, so that the surveying error The second buffer and the ground fixing means provided at the lower end of the pull rod constituting the first buffer and ground fixing means and the vertical holding means provided at the lower end of the staff, So that the staff can be more firmly and stably fixed without shaking, making the leveling work more effective. It is possible to perform with.

Description

[0001] The present invention relates to a double fixing apparatus for leveling,

[0001] The present invention relates to a staff used for leveling in the field of geodetic surveying, more specifically, to protect the staff from external vibration or shock generated in the vicinity of the staff during leveling, If you change the direction of the target in place, you can turn the machine horizontally with the staff lowered to the ground without lifting it, so that you can measure accurately without measuring error, This allows the spinal cord to be handled easily, and the staff is kept vertically, even if the spinal cord is not holding the staff. Not only can the spinal cord perform other tasks necessary for leveling, So that the efficiency of the entire leveling operation can be enhanced.

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.

Fig. 15 is a view for explaining a method of measuring the level using the staff 1 and the level machine 3. Fig.

In the first step, the spinal cord elevates the staff to a ground reference point (a0) at which the altitude is known, and the machine number (machine hand) is set at the first observation point (b1) .

In the second step, the spinal cord moves to the first point (a1) to set up the staff, and the machine number reads the star point scale at the first point. 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 redirects the staff at the first point so that the staff looks at the leveling machine The machine reads the star scale scale of the first point (a1) from the second observation point (b2) to the level gauge.

In the fourth step, the spinal cord moves to the second point a2 to set up the staff, and the machine number reads the starpoint scale at the second point a2 at the second point of observation 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 moving the star (1) and leveler (3) continuously, the elevation of each point to the target point is obtained by switching the direction of the level device at each point and each observation point by reading the scale.

However, as shown in FIG. 16, a conventional star has a structure in which a plurality of scale bars 1a and 1b are combined with a slide stretchable type so that the length can be adjusted. In the case of vibration or impact around, the staff may be disturbed in reading the scale of the staff by a leveling unit located at a certain distance, so that the staff scale can not be read accurately, 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 double locking 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, when the staff is standing on the ground and the survey is proceeding, if the staff is subjected to vibration or impact from the ground, the staff will be shaken and the accuracy of surveying will decrease.

Therefore, it is required to develop a double leveling device for leveling so that the measurement accuracy can be improved by preventing vibration or shock from being shaken by vibration or shock even if vibration or shock is applied to the surface from the ground.

In addition, if the staff is not set up exactly vertically, the measurement precision will be lowered. Therefore, when the table is installed on the ground, the machine can check the status of the staff with the surveying equipment so that the staff can be installed directly on the table. Although it is possible to install the staff vertically to some extent by pointing the direction, it is possible to check whether the staff is in the right or left direction by checking the status of the staff with the measuring machine. However, It is practically very difficult to vertically set the fulcrum in both the left-right direction and the back-and-forth direction, which results in a problem that the measurement accuracy is lowered.

Therefore, it is required to develop a double leveling device for leveling so that the staff can be installed vertically and precisely with respect to the left and right direction and the back and forth direction.

Also, since the conventional star is simply landed on the ground, the star is shaken by the wind or vibration, so that the leveling operation can not be performed effectively.

Therefore, it is required to develop a double leveling device for leveling so that the leveling operation can be effectively performed by allowing the staff to be firmly and stably fixed to the ground without shaking.

The "leveling staff" of the Korean Patent Registration No. 10-1073942 (registered October 10, 2011) "Level Measurement System that Minimizes Error of Geodetic Survey Data", Korea Patent Registration No. 10-1227188 (Registered on Feb. 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" The "leveling lowering device for leveling" of Korea Patent Registration No. 10-1208592 (registered on November 29, 2012)

Therefore, the object of the present invention is to protect the staff from external vibration or shock generated in the vicinity of the staff in level surveying, and to prevent the staff from lowering the staff without lifting the staff when the spinal cord changes the direction of the target in place It is possible to make accurate measurement without measuring error because it can be horizontally rotated in the state where it is set and can be directed to the level machine of the machine number so that the measurement accuracy can be improved by installing the staff vertically and accurately, The table spinal cord can be handled easily by the spinal cord, and even if the spinal cord is not holding the staff, the staff can remain vertically so that the spinal cord can perform other tasks required for leveling, So that it can be fixed to the ground as a double to increase the efficiency of the overall leveling work. Intended to provide a dual retention mechanism for leveling.

In order to achieve the above-mentioned object, the present invention provides a lower chuck having an open upper end and a lower closed end, the lower chuck being formed with a graduation on the front side thereof, and a rod- The upper chuck is inserted into the lower chuck, and the length of the upper chuck is adjustable by means of a slide retractable type,

And vertical holding means coupled to the upper end of the lower chuck to automatically vertically align the lower chuck and the upper chuck,

Wherein the vertical holding means is coupled with the upper four sides of the lower chuck band in a wrapping state and has a first shaft at the center of both sides thereof; A first shaft boss and a second shaft boss are provided on an inner surface of the pair of arms in correspondence with the first shaft, A single shaft supporting biaxial member having a second shaft protruding rearward at a rear center of the connection portion; A biaxial support having a second axis boss corresponding to the second axis; And a knob rod slidably connected to the biaxial support in an up-and-down direction,

And a first buffer and ground fixing means provided at a lower end of the lower chuck band,

The first shock absorber and the ground fixing means include a bearing housing having a coupling piece fixedly coupled to a lower surface of the lower chuck, and a bearing accommodation portion integrally formed on a bottom 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 plate integrally formed at a lower end of the landing rod; and a plurality of grounding pins projecting downward from a lower surface of the landing plate, wherein the spring- A landing fixing member; 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; And,

And a second buffer and ground fixing means provided at a lower end of the pull rod,

The second cushioning and ground fixing means includes a bearing housing having a coupling piece fixedly coupled to a bottom surface of the mounting member at a lower end of the handle bar and a bearing accommodation portion integrally formed on a bottom surface of the coupling member; 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 plate integrally formed at a lower end of the landing rod; and a plurality of grounding pins projecting downward from a lower surface of the landing plate, wherein the spring- A landing fixing member; 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 present invention provides a double-leveling apparatus for leveling.

According to the double level fixing apparatus for level measurement of the present invention, vertical holding means including a single shaft member provided at the upper end of the lower chuck, a single shaft supporting dual shaft member, a biaxial support member and a pull rod is provided, The rod is held vertically by holding the rod and lifting the landing piece of the landing fixing member at the lower end of the star so that it does not touch the ground, and when the landing piece is landed on the ground in this state, the staff can stand upright on the ground So that the staff can always be installed accurately and vertically, thereby increasing the measurement accuracy.

In addition, according to the double level fixing apparatus for level measurement of the present invention, when the pull rod is fixed to the ground by the second buffer and ground fixing means provided at the lower end of the pull rod of the vertical holding means, Even if the staff is kept vertically, the spinal column can perform other tasks needed for leveling, which will increase the efficiency of the overall leveling work.

According to the present invention, the upper end of the landing fixing member is fixed to the lower end of the buffer spring at the lower end of the lower chuck and the lower end of the handle bar, and the buffer spring is fixed to the lower end of the lower chuck, The first and second shock absorbers are supported by a spring support portion formed at a lower end of a rotary shaft press-fitted into an inner race of a bearing press-fitted into a bearing receiving portion of the bearing, And a ground fixing means are provided to apply vibration or impact generated in the vicinity of the staff to the landing fixing member, the vibration or impact is absorbed by the first and second buffering and land fixing means and is not transmitted to the staff The number of machines can be read accurately by the leveler.

According to the present invention, the bearing housing is fixed to the lower end of the lower chuck, the bearing race of the bearing housing is press-fitted with the outer race of the bearing, and the rotary shaft is press-fitted into the inner race of the bearing The upper end of the buffer spring is relatively rotatably supported on the rotary shaft, the lower end of the buffer spring is fixed to the upper end of the landing fixing member penetrating the housing, and the bearing housing and the housing are rotatably connected by the ring It is possible to change the direction of the staff by turning the staff in a state where the staff is fixed and fixed on the ground, thereby making it possible to surely exclude a measurement error caused by a change in staff position.

According to the double level fixing apparatus for level measurement of the present invention, the first buffer and ground fixing means provided at the lower end of the staff and the second buffer and ground fixing means provided at the lower end of the holding rod constituting the vertical holding means constitute the star This allows the stiff to be fixed more firmly and stably without shaking, making leveling work more efficient.

1 to 14 show a preferred embodiment of a leveling apparatus 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 first first buffer and ground fixing means and the first ground surface fixing means,
8 is a longitudinal front view showing a second first buffer and ground fixing means and a second ground fixing means,
9 is a longitudinal right side view showing the vertical holding means,
Fig. 10 is an enlarged cross-sectional view taken along the line A-A in Fig. 9,
11 is an enlarged cross-sectional view taken along the line B-B in Fig. 9,
112 is a longitudinal right side view showing a horizontal holding and landing process when installed on a horizontal ground,
13 is a longitudinal right side view showing a horizontal holding and landing process when installed on a front upward sloping ground,
FIG. 14 is a longitudinal right side view showing a horizontal holding and landing process when installed on a downward sloping ground,
15 is a view for explaining a method of measuring a level using a conventional star and a leveler,
And,
16 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.

1 to 14 show a preferred embodiment of a leveling apparatus for leveling according to the present invention.

The leveling staff according to the present embodiment includes a plurality of staffs 10 and 20 which are slidably and slidably coupled and adjustable in length.

The plurality of stafs 10 and 20 are formed to be thicker than the stiffener positioned at the lower side, that is, the stiffener 10 shown in Fig. 1, that is, the stiffener 20 shown in Fig.

Scales 11 and 21 are engraved on the stands 10 and 20 so that the machine number can be read by a leveler.

The lower chuck 10 is formed in an elongated barrel shape having an open upper end and a closed lower end and the upper chuck 20 is formed in a bar shape in which all the faces are all closed, So as to be adjustable in length by means of a slide stretching method.

Vertical holding means 30 is provided at the upper end of the lower chuck 10.

The vertical holding means 30 is composed of a uniaxial body 31 which is coupled in a state of wrapping the upper four sides of the lower chuck 10 and has a first shaft 31a at the center of both sides thereof, A connecting portion 32b integrally connecting a pair of arms 32a spaced from both sides of the pair of arms 32a and a rear end of the pair of arms 32a; And a second shaft 32d protruding rearward from the center of the rear surface of the connecting portion 32b. The first shaft boss 32c and the second shaft 32d are formed on the inner surface of the first shaft 32a and the second shaft 32b, A biaxial support 33 provided with a second biaxial boss 33a corresponding to the axis 32d and a biaxial support 33 which is connected to the biaxial support 33 so as to be slidable upward and downward and in which the mounting plate 34b is extended And a grip rod 34 which is formed.

A fixing screw 31c passing through a plurality of screw through holes 31b formed in the single shaft member 31 is fastened to the lower chuck 10 to fasten the single shaft member 31 to the upper end of the lower chuck 10, Can be fastened to the screw fastening holes (31d) formed on the front and rear surfaces of the housing.

The interval between the unicycle body 31 and the lower chain block 10 can be formed between the rear wall of the unicycle body 31 and the connecting portion 32b of the uniaxial supporting biaxial body 32 .

The bearings 37 and 38 are inserted between the first shaft 31a and the first shaft boss 32c and between the second shaft 32d and the second shaft boss 33a to form a single- It is preferable to make it more smoothly.

The bearing 37 prevents the out race from being inserted into the first axis boss 32c to be idle, and prevents the first axis 31a from being inserted into the inner race.

The bearing 38 is configured such that the out race is press-fitted into the second shaft boss 33a and does not idle, and the second shaft 32d is press-fitted into the inner race so that it is not idle.

In order to slidably connect the pull rod 34 to the biaxial support 33 in an upward and downward direction, a biaxial support 33b is vertically elongated and a biaxial support 33 A guide bolt 39a having a head portion 39a in contact with the front of the handle bar 34 is slidably inserted into the guide slot 33b up and down and a bolt fastening hole 34a formed at the upper end of the handle bar 34 So that the rear end of the guide bar 39 protrudes from the rear surface of the handle bar 34 and the guide nut 39b can be fastened to the rear end of the guide bolt 39.

The ground fixing rods 35 and the foot rest pieces 36 may be integrally formed at the lower end of the handle bar 34 as shown in the drawing and may be formed separately from the handle bar 34 and fixed to the lower end of the handle bar 34 May be combined. The connection between the ground fixing bar 35 and the foot hanging piece 36 with respect to the handle bar 34 can be achieved by a welding method, a method using a bolt, a nut or a screw.

The lower chuck 10 is provided at its lower end with a first buffer and a ground fixing means 40.

The first cushioning and ground fixing means 40 includes a coupling piece 41a fixedly coupled to a lower surface of the lower chuck 10 and a bearing receiving portion 41b integrally formed on a lower surface of the coupling piece 41a. A bearing housing 41 provided with a bearing housing 41; A bearing 42 into which an out race is press-fitted into the inner peripheral surface of the bearing receiving portion 41b; A rotary shaft 43 which is press-fitted into the inner race of the bearing 42 and has a spring support portion 43a at a lower end thereof; A buffer spring 44 whose upper end is relatively rotatably supported by the spring support portion 43a of the rotary shaft 43; A casing 45 which is formed in a cylindrical shape with an opened upper surface and accommodates the bearing receiving portion 41b, has a through hole 45a formed in a lower surface thereof and an oil injection hole 45b formed in a peripheral wall thereof; A landing rod 46a having a spring fixing portion 46b to which the lower end of the cushioning spring 44 is press-fitted and fixed is formed at an upper end thereof and a downwardly extending landing rod 46a; a landing plate 46c integrally formed at the lower end of the landing rod 46a; And a plurality of grounding rods (46d) projecting downward from a lower surface of the landing plate (46c); An oil (47) injected into the casing (45); A cylindrical nipple main body 48a inserted into the oil injection hole 45b of the casing 45, an opening and closing ball 48b inserted into the outer end of the nipple main body 48a, A main nipple 48 having a nipple spring 48c which is inserted into the opening and closing ball 48b to elastically support the opening and closing ball 48b to the outer end of the nipple main body 48a; And an outer circumferential portion is inserted into a ring groove 49b formed in an inner circumferential surface of the casing 45 and an outer circumferential portion is inserted into a ring groove 49a formed in the outer circumferential surface of the bearing accommodating portion 41b, 41b are relatively rotatably connected to each other (see Figs. 4 to 7).

A fixing screw 41e penetrating through a plurality of screw through holes 41c formed in the engaging piece 41a is fixed to the bottom of the lower chuck 10 in order to fix the engaging piece 41a to the lower surface of the lower chuck 10, And can be fastened to the plurality of screw fastening holes 41d formed on the bottom surface.

The bearing 42 may be configured to press the out race into the bearing receiving portion 41b to prevent idling, and a radial ball bearing may be used.

The rotary shaft 43 is press-fitted into the inner race of the bearing 42 so as not to rotate.

The buffer spring 44 may be a compression coil spring.

The ground thin foil rod 46d may be formed as a bottom sharp-pointed shape so as to easily fall on the ground.

The oil 47 functions to buffer the inside of the casing 45 and also functions to prevent the bearings 42, the buffer springs 44, and the rings 49 provided in the casing 45 from being corroded .

The main use nipple 48 may be a main use nipple that is normally used for injecting the oil 47 into the casing 45.

A second buffer and ground fixing means (50) is provided at the lower end of the pull rod (34) of the vertical holding means (30).

The second cushioning and ground fixing means 50 includes a coupling piece 51a fixedly coupled to the lower surface of the mounting piece 34b at the lower end of the handle bar 34, A bearing housing 51 having a bearing receiving portion 51b; A bearing 52 into which an out race is inserted into the inner peripheral surface of the bearing receiving portion 51b; A rotating shaft 53 which is press-fitted into the inner race of the bearing 52 and has a spring supporting portion 53a at a lower end thereof; A cushion spring 54 whose upper end is relatively rotatably supported by the spring support portion 53a of the rotary shaft 53; A casing 55 formed in a cylindrical shape having an opened upper surface and receiving the bearing receiving portion 51b and having a through hole 55a formed in a lower surface thereof and an oil injection hole 55b formed in a peripheral wall thereof; A landing rod 56a having a spring fixing portion 56a to which the lower end of the buffer spring 54 is press-fitted and fixed at the upper end and extending downward, a landing plate 56c integrally formed at the lower end of the landing rod 56a, And a plurality of grounding pins 56d protruding downward from a lower surface of the landing plate 56c; An oil (57) injected into the casing (55); A cylindrical nipple body 58a inserted into the oil injection hole 55b of the casing 55, an opening and closing ball 58b inserted into the outer end of the nipple body 58a, A main nipple 58 having a nipple spring 58c which is inserted into the opening and closing ball 58b to elastically support the opening and closing ball 58b to the outside end of the nipple body 58a; And an outer peripheral portion is inserted into a ring groove 59b formed in an inner circumferential surface of the casing 55 so that the casing 55 and the bearing receiving portion 51b are inserted into the ring groove 59a formed in the outer peripheral surface of the bearing receiving portion 51b, 51b are relatively rotatably connected to each other (see Figs. 4 to 6 and Fig. 8).

A fixing screw 51e penetrating through the plurality of screw through holes 51c formed in the engaging piece 51a for fixing the engaging piece 51a to the lower surface of the mounting piece 34b at the lower end of the handle bar 34 And can be fastened to a plurality of screw fastening holes 51d formed on the lower surface of the mounting piece 34b.

The bearing 52 may be configured to press the outer race into the bearing receiving portion 51b to prevent idling, and a radial ball bearing may be used.

The rotary shaft 53 may be press-fitted into the inner race of the bearing 52 so as not to rotate.

The buffer spring 54 may be a compression coil spring.

The ground thin foil rod 56d may be formed as a bottom sharp point shape so as to easily peel it on the ground.

The oil 57 functions to buffer the inside of the casing 55 and to prevent the bearings 52, the buffer springs 54, and the ring 59 provided in the casing 55 from corroding .

The main use nipple 58 may be a main use nipple for injecting the oil 57 into the casing 55.

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

The leveling apparatus for leveling according to the present invention is constructed so that the table spinal cord grips the staff and the floor thickening rod 46d of the landing fixing member 46 is connected to the ground reference point a0, The machine is installed on the ground such as the first point (a1), the second point (a2), and the third point (a3), and is used to read and calibrate the staff scale using the leveler.

The spring clamping portion 46b at the upper end of the ground thinning rod 46d is supported at the lower end of the buffer spring 44 and the buffer spring 44 is fixed to the lower end of the lower chuck 10 Is supported by the spring support portion 43a formed at the lower end of the rotary shaft 43 which is press-fitted into the inner race of the bearing 42 press-fitted into the bearing receiving portion 41b of the bearing housing 41. Therefore, Even if vibrations or shocks are applied to the landing fixation member 46 composed of the grounding rod 46d and the landing plate 46c and the landing rod 46a, the vibration or impact is buffered by the buffering spring 44, So that the machine number can accurately read the scales 11 and 21 of the staff 10 and 20 through the leveler.

The oil 47 is injected into the casing 45 accommodating the bearing accommodating portion 41b, the rotary shaft 43 and the buffer spring 44. Therefore, 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) with the staff (46) on the ground at 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 41 is fixed to the lower end of the lower chuck 10 and the outer race of the bearing 42 is press-fitted into the bearing receiving portion 41b of the bearing housing 41, The upper end of the buffer spring 44 is rotatably supported on the rotary shaft 43 and the lower end of the buffer spring 44 is connected to the lower end of the buffer ring 44, Since the bearing receiving portion 41b and the casing 45 are rotatably connected to each other by the ring 49 so as to be relatively rotatable with respect to the grounding rod 46, (10, 20) can be horizontally rotated.

A main oil hole 45b is formed in the outer circumferential surface of the casing 45 and a main use nipple 48 composed of a nipple main body 48a and an opening and closing ball 48b and a nipple spring 48c is provided in the main oil hole 45b The oil 47 injected into the casing 45 can be replenished.

On the other hand, the horizontal holding means 30 can vertically install the staples 10, 20.

That is, if the spinal cord grips the handle bar 34 and lifts the handle bar 34, if the thin bar 46d does not touch the ground surface, the guide bolt 39a fixed to the upper end of the handle bar 34 Is inserted into the guide slot 33b formed in the biaxial support body 33 so as to be slidable up and down. Therefore, as shown in Figs. 12A, 13A and 14A, The upper end of the guide elongated hole 33b is caught by the guide bolt 39 and the lower end of the guide bolt 39 is engaged with the upper end of the guide bolt 39, The single shaft member 31 is uniaxially rotated based on the first shaft 31a and the first shaft boss 32c of the single shaft supporting dual shaft member 32 by its own weight, The upper and lower chucks 10 and 20 are vertically aligned with respect to the second axis 32d and the second axis boss 33a of the biaxial support 33 with reference to the second axis 32d.

Since the bearings 37 and 38 are provided between the first shaft 31a and the first shaft boss 32c and between the second shaft 32d and the second shaft boss 33a, The rotation can be performed very smoothly.

The table spinal cord is connected to the ground reference point a0, the first point a1, the second point a2, and the ground surface roughening rod 46d of the first buffer and ground fixing means 40 coupled to the lower end of the lower chuck 10, The upper and lower chucks 10 and 20 are moved downward as shown in Figs. 12 (b), 13 (b) and 14 (b) The second buffer a3 provided at the lower end of the handle bar 34 is provided vertically with respect to the ground such as the ground reference point a0, the first point a1, the second point a2, the third point a3, And the ground thinning rod 56d of the ground fixing means 50 are kept out of contact with the ground.

In this case, since the spinal cord can hold the handle bar 34 in comparison with the case where the spinal cord is directly holding the upper and lower scales 10 and 20, the spinal cord can handle the upper and lower scales 10 and 20 conveniently And it is advantageous to keep the upper and lower chucks 10 and 20 in a vertical state.

As shown in Figs. 12 (c), 13 (c) and 14 (c), when the staff is vertically installed on the ground, the table spinal cord can continue to hold the handle bar 34 As shown in Figs. 12 (d), 13 (d) and 14 (d), the first buffer and ground fixing means 40, which is coupled to the lower end of the lower chuck 10, The ground thinning rod 56d of the second cushioning and ground fixing means 50 connected to the lower end of the thin rod 46d and the handle bar 34 is fixed on the ground so that the table spinal cord can move the handle bar 34 further Even if you do not hold it, you can also have the stapler installed vertically on the ground.

At this time, the second buffering and ground fixing means 50 coupled to the lower end of the handle bar 34 is supported by the bottom surface of the buffer spring 54 at the upper end of the ground thinning rod 46d, The cushion spring 54 is inserted into the bearing receiving portion 51b of the bearing housing 51 fixed to the lower end of the handle bar 34 and inserted into the inner race of the bearing 52, The landing fixation member 56 composed of the ground thinning rod 56d and the landing plate 56c and the landing rod 56a vibrates or impacts generated at the periphery of the star are supported by the spring supporting portion 53a formed at the lower end, The vibrations or shocks of the surroundings are not transmitted to the staffs 10 and 20 so that the number of machines 11 and 21 of the staffs 10 and 20 is reduced through the leveling machine So that it can be read accurately.

Since the oil 57 is injected into the casing 55 accommodating the bearing accommodating portion 51b, the rotating shaft 53 and the buffer spring 54, the vibration and impact applied to the landing fixing member 56 Can be absorbed more effectively.

A main oil hole 55b is formed in the outer circumferential surface of the casing 55 and a main use nipple 58 composed of a nipple main body 58a, an opening and closing ball 58b and a nipple spring 58c is provided in the main oil hole 55b The oil 57 injected into the casing 55 can be replenished.

When the ground thinning rods 46d and 56d are fixed to the ground, the grounding rods 46d and 56d can be fixed to the ground by stepping on the grounding plates 46c and 56c.

And a second buffering and ground fixing means 50 coupled to the lower surface of the handle rod 34 and the ground surface thickening rod 46d of the first buffering and ground fixing means 40 coupled to the lower end of the lower chuck 10 It is possible to firmly and stably fix the staff to the ground even if the table spinal cord continues to hold the knob rod 34. In particular, Is fixed by the first cushioning and surface fixing means (40) and the second cushioning and surface fixing means (50), so that the staff is more firmly and stably fixed to the ground without shaking, thereby performing the leveling work more effectively .

As a result, the table spinal cord can be used to perform other tasks required for leveling rather than keeping staff steady, thus increasing the efficiency of the overall leveling work.

As a result, the spinal column can be installed vertically and accurately, thus increasing the accuracy of the measurement.

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: Lower chuck 20: Upper chuck
30: vertical holding means 31: one-
31c: first shaft 32: single shaft supporting biaxial member
32c: first axis boss 32d: second axis
33: two-shaft support 33a: second shaft boss
33b: guide slot 34: handle bar
33a: bolt fastening hole 35: ground fastening rod
36: Pedestal piece 37, 38: Bearing
39: guide bolt 39b: guide nut
40: first buffering and ground fixing means
41: bearing housing 41b: bearing receiving portion
42: bearing 43: rotary shaft
44: buffer spring 45: casing
46: landing rod 47: oil
48: main nipple 49: ring
50: second buffering and ground fixing means
51: bearing housing 51b: bearing receiving portion
52: Bearing 53:
54: buffer spring 55: casing
56: landing rod 57: oil
58: main nipple 59: ring

Claims

A lower chuck 10 formed in an elongated barrel shape having an opened top and a closed bottom and engraved with a scale 11 on the front side, The upper chuck 20 is inserted into the lower chuck 10 with the chuck 20 so that the length of the upper chuck 20 is adjustable in a stretchable and retractable manner,
And vertical holding means 30 coupled to the upper end of the lower chuck 10 to automatically vertically align the lower chuck 10 and the upper chuck 20,
The vertical holding means 30 includes a monoaxial body 31 coupled to the lower chuck 10 in a state of wrapping the upper four sides thereof and having a first shaft 31a at both sides thereof; A connecting portion 32b integrally connecting a pair of arms 32a spaced from both sides of the monocyclic body 31 and a rear end portion of the pair of arms 32a; And a first shaft boss 32c having a first shaft boss 32c and a second shaft 32d protruding rearward at the rear center of the connecting portion 32b on the inner side of the pair of arms 32a, )Wow; A biaxial support 33 having a second axis boss 33a corresponding to the second axis 32d; And a handle rod (34) slidably connected to the biaxial support (33) in an up and down direction,
And a first buffer and ground fixing means (40) provided at the lower end of the lower chuck (10)
The first buffer and ground fixing means (40)
A bearing housing 41 having a coupling piece 41a fixedly coupled to a lower surface of the lower chuck 10 and a bearing receiving portion 41b integrally formed on a lower surface of the coupling piece 41a; A bearing 42 into which an out race is press-fitted into the inner peripheral surface of the bearing receiving portion 41b; A rotary shaft 43 which is press-fitted into the inner race of the bearing 42 and has a spring support portion 43a at a lower end thereof; A buffer spring 44 whose upper end is relatively rotatably supported by the spring support portion 43a of the rotary shaft 43; A casing 45 which is formed in a cylindrical shape with an opened upper surface and accommodates the bearing receiving portion 41b, has a through hole 45a formed in a lower surface thereof and an oil injection hole 45b formed in a peripheral wall thereof; A landing rod 46a having a spring fixing portion 46b to which the lower end of the cushioning spring 44 is press-fitted and fixed is formed at an upper end thereof and a downwardly extending landing rod 46a; a landing plate 46c integrally formed at the lower end of the landing rod 46a; And a plurality of grounding rods (46d) projecting downward from a lower surface of the landing plate (46c); An oil (47) injected into the casing (45); A cylindrical nipple main body 48a inserted into the oil injection hole 45b of the casing 45, an opening and closing ball 48b inserted into the outer end of the nipple main body 48a, A main nipple 48 having a nipple spring 48c which is inserted into the opening and closing ball 48b to elastically support the opening and closing ball 48b to the outer end of the nipple main body 48a; And an outer circumferential portion is inserted into a ring groove 49b formed in an inner circumferential surface of the casing 45 and an outer circumferential portion is inserted into a ring groove 49a formed in the outer circumferential surface of the bearing accommodating portion 41b, 41b are relatively rotatably connected to each other,
And a second buffer and ground fixing means (50) provided at the lower end of the handle bar (34)
The second buffer and ground fixing means (50)
A bearing housing 51 having a coupling piece 51a fixedly coupled to the lower surface of the mounting piece 34b at the lower end of the handle bar 34 and a bearing receiving portion 51b integrally formed on the lower surface of the coupling piece 51a, 51); A bearing 52 into which an out race is inserted into the inner peripheral surface of the bearing receiving portion 51b; A rotating shaft 53 which is press-fitted into the inner race of the bearing 52 and has a spring supporting portion 53a at a lower end thereof; A cushion spring 54 whose upper end is relatively rotatably supported by the spring support portion 53a of the rotary shaft 53; A casing 55 formed in a cylindrical shape having an opened upper surface and receiving the bearing receiving portion 51b and having a through hole 55a formed in a lower surface thereof and an oil injection hole 55b formed in a peripheral wall thereof; A landing rod 56a having a spring fixing portion 56a to which the lower end of the buffer spring 54 is press-fitted and fixed at the upper end and extending downward, a landing plate 56c integrally formed at the lower end of the landing rod 56a, And a plurality of grounding pins 56d protruding downward from a lower surface of the landing plate 56c; An oil (57) injected into the casing (55); A cylindrical nipple body 58a inserted into the oil injection hole 55b of the casing 55, an opening and closing ball 58b inserted into the outer end of the nipple body 58a, A main nipple 58 having a nipple spring 58c which is inserted into the opening and closing ball 58b to elastically support the opening and closing ball 58b to the outside end of the nipple body 58a; And an outer circumferential portion is inserted into a ring groove 59b formed in an inner circumferential surface of the casing 55 and inserted into the ring groove 59a formed in the outer circumferential surface of the bearing accommodating portion 51b, 51b are relatively rotatably connected to each other.