KR101436433B1 - Apparatus for adjusting height of staff in geodetic surveying instrument - Google Patents

Abstract

The present invention relates to a height adjusting apparatus for geodetic surveying, and more specifically, to a height adjusting apparatus for geodetic surveying, configured to comprise: a rotary buffer landing means; a verticality maintaining means; and a length adjusting means. According to the height adjusting apparatus for geodetic surveying of the present invention, since the length of a leveling rod is adjustable by means of a switch operation, a staff man can easily adjust the length of the leveling rod with one hand without change of verticality of the leveling rode in a state that the staff man holds a handle and lands the leveling rod. Also, when the staff man changes the direction of the leveling rod at the same spot, accurate measurement is possible by not lifting and laying down the leveling rod on the ground, horizontally revolving the same, and facing the same toward a leveling device of a machinery staff.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a geodetic surveying instrument,

The present invention relates to a leveling apparatus for leveling, and more particularly, it relates to a leveling apparatus for leveling a leveling apparatus capable of easily adjusting the length of a target chuck with one hand without changing the vertical state of the target chuck, When leveling, it is possible to protect the skeleton from external vibrations or shocks generated in the vicinity of the target chuck. In addition, if the spinal cord changes the direction of the target in place, it is rotated horizontally with the skeleton being lowered on the ground It is possible to accurately measure without leveling error because it can point to the leveling machine, and it is possible to increase the accuracy of measurement by making it possible to install the skull vertically and accurately, and the spinal cord can hold the handle. And to make it advantageous to keep the skeleton in a vertical position The present invention relates to a stable mounting device of a table chuck.

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.

The level measurement of the geodetic survey is a measurement of the height difference between two points using the marking and leveling machine. The accuracy is 5.0mm S1 / 2 for the level 2 survey (where S is the one way distance, Of the total number of people).

11 is a view for explaining a method of measuring the level by using the surveying instrument 2 such as a skateperson 1 and a leveler.

In the first step, the table spinal cord is placed on a ground reference point a0 at which altitude is known, and the machine number is measured at a first observation point b1, which is a certain distance away, 2) to read the scales of the skeleton (1).

In the second step, the spinal cord is moved to the first point a1 to set up the sculpture 1, and the number of machines is switched from the observation point b1 to the direction of the measuring instrument 2, Read the scale scale of the first point through the device (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 changes the orientation of the table 1 from its initial position (first point) The machine number reads the 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 erect the tablet 1, and the machine number reads the tablet scale of 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 measuring equipment (2) such as the skateboard (1) and the leveler continuously, the direction of the leveler at each viewpoint and each point of view are switched to read the scale and the altitude of each point I ask.

At this time, in accordance with the height difference between the first and second observation points (b1, b2) on which the reference point (a0), the first and second points (a1, a2) The height of the table chuck has to be adjusted. As shown in FIG. 12, the conventional table is composed of two upper and lower chucks 1a and 2b which are slidably and extendably adjustable in length. In order to adjust the height of the table chuck (Not shown) for holding the skeleton 1 with one hand and loosening the engagement screw (not shown) for engaging the lower chuck 1a and the upper chuck 1b. Then, the table spinal cord is held by the lower chuck 1a with one hand The upper and lower chucks 1b and 1b are pushed or pulled to adjust the height of the skeleton 1 and then the lower and upper chucks 1a and 1b are tightened to secure the lower and upper chucks 1a and 1b, 1b to be combined in a state of being adjusted in height, so that the process of adjusting the height is troublesome In the length control process of the chuck chuck, the vertical state of the chuck chuck is changed, and the vertical direction must be adjusted again.

Therefore, it is required to develop a leveling device for leveling, which can easily adjust the height by one touch method without changing the vertical state of the table chuck.

In addition, in the case of a conventional skeleton, when the skeleton placed on the ground is subjected to vibrations or shocks, the skeleton of the skeleton is shaken by a leveling unit spaced a certain distance, There is a problem that a measurement error occurs.

Also, in the conventional step 3, in the process of changing the direction of the spinal cord in the third step, the skeleton is lifted from the ground to change the direction of the skeletal chuck and then put the skeleton back to its original position. It often occurs that it can not be accurately placed in the original place, and thus a measurement error is generated.

Therefore, it is required to develop a leveling device for leveling so that the spinal cord does not change the position of the target in the course of changing the direction of the target chuck.

The conventional top piece 1 has a ground member 1c coupled to the lower end of the lower spool 1a. Since the top piece 1 is simply made of iron or synthetic resin, the top piece 1 is placed on the ground, There is a problem that when a vibration or an impact is applied to the surface from the ground, the surface of the surface is shaken and the accuracy of measurement is lowered.

Therefore, it is required to develop a leveling apparatus for a leveling measurement so as to increase the measurement accuracy by preventing vibrations or shocks from being shaken by vibrations or shocks applied to the surface of the vehicle.

In addition, since the measurement accuracy is lowered when the skeleton is not accurately positioned vertically, when the spinal column is mounted on the ground, the machine can check the state of the skeleton with the measuring instrument and direct the direction so that the skeleton can be installed directly on the skeleton However, it is possible to confirm whether or not the vertical direction is horizontal, but it is impossible to confirm whether the vertical direction is vertical or not. Therefore, It is practically very difficult to vertically set all of them with respect to each other, which results in a problem that the measurement accuracy is lowered.

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

"Leveling Survey" of Korean Patent Registration No. 10-1073942 (Registered on 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 provide an apparatus and a method for adjusting the length of a target chuck with one hand without changing the vertical state of the target chuck while the target spinal cord holds the handle and landing the target, In addition to the ability to protect the skeleton from impact, and when the spinal cord changes the orientation of the target in place, it can be turned horizontally with the skeleton being lowered on the ground without lifting the face, The accuracy of the measurement can be increased by allowing the scissors to be installed vertically and the scissors can hold the handle so that the spinal cord can handle the scissors conveniently and the scissors can be held vertically So that it is advantageous for the leveling measurement.

In order to achieve the above-mentioned object, the present invention provides an elongated barrel having an opened upper end and a closed lower end, the elongated barrel being formed with a graduated scale on the front side, an elongated barrel having an opened upper end and a closed lower end, A rotary chucking and landing means provided at the lower end of the lower chuck band and having an upper chuck engraved with a scale, the upper chuck being inserted into the lower chuck and being adjustable in length by a slide and telescopic type; Vertical holding means coupled to the upper end of the lower chuck to allow the lower chuck and the upper chuck to be automatically vertical; And a length adjusting means for adjusting a length of coupling between the lower chuck and the upper chuck,

The rotary cushioning and landing means includes: 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 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; And,

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; A handle rotatably connected to the rear surface of the biaxial support; And a bearing inserted between the first shaft and the first shaft boss and between the second shaft and the second shaft boss,

Wherein the length adjusting means comprises: a motor body fixedly installed on an inner lower end of the upper chuck; a reversible drive motor having a hollow rotary shaft rotatably mounted on the motor body and having an internal thread on an inner peripheral surface; A drive screw having a lower end fixed to a lower end upper surface of the lower chuck and having a male screw portion screwed to the female screw portion of the rotary shaft; A controller for controlling the driving motor installed in the receiving part formed in the biaxial support; A battery accommodated in the storage unit and supplying power to the driving motor and the control unit; And a length adjustment switch provided on an upper end of the biaxial support.

According to the height measuring apparatus for leveling measurement of the present invention, since the length of the table chuck can be adjusted by the switch operation, the table spinal cord is held in the vertical position of the table chuck while holding the hand grip, The length of the chuck can be easily adjusted.

According to the present invention, the upper end spring support portion of the landing rod is supported at the lower end of the cushion spring, and the cushion spring is fixed to the lower end of the lower chuck by the inner receiving portion of the bearing, Even if vibrations or shocks generated at the periphery of the table chuck are applied to the landing rod, the shock absorbing springs are buffered by the buffer springs, so that vibration or impact around the rack is not transmitted to the table, Since oil is injected into the housing housing the receiving portion, the rotating shaft, and the buffer spring, it is possible to more effectively absorb the vibration or impact of the peripheral portion applied to the landing rod, so that the scale of the machine can be accurately read through the leveler .

In addition, according to 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-fitted into the inner race of the bearing And the upper end of the buffer spring is relatively rotatably supported on the rotary shaft. The lower end of the buffer spring is supported so as to be rotatable relative to a landing rod penetrating through the housing. The bearing housing and the housing are rotatably connected by a ring Therefore, since the direction of the marking chuck can be switched by turning the scuttle while the landing stick is on the ground, it is possible to reliably eliminate the measurement error due to the change of the position of the marking chuck.

Further, according to the apparatus for height measurement for leveling of the present invention, when the spinal cord is lifted up to such a degree that the spinal cord at the lower end of the barrel does not touch the ground while the spinal cord is gripped by the handle, the skull is automatically held vertically and the landing rod is landed on the ground Since the skeleton can be set up vertically on the ground, the skeleton can always be installed accurately and vertically, thereby increasing the measurement accuracy.

Further, according to the leveling height-adjusting device of the present invention, since the spinal cord can hold the handle, the spinal cord can conveniently handle the skull and it is advantageous to keep the skull vertical.

1 to 10 show a preferred embodiment of a leveling device 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 side view,
9 is an enlarged cross-sectional view taken along line A-A in Fig. 8,
10 is an enlarged cross-sectional view taken along the line B-B in Fig. 8,
11 is a view for explaining a method of measuring a level using a conventional marker and leveler,
Fig. 12 is a perspective view of a conventional chuck.

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.

As shown in FIG. 1, the scales for geodetic surveying according to the present embodiment include a plurality of scales 10 and 20 which are slidably and slidably coupled and adjustable in length.

The plurality of skeletons 10 and 20 are formed thicker than the skeleton located on the lower side, that is, the skeleton on which the skeleton 10 of FIG. 1 is located, that is, the skeleton 20 of FIG.

Scales (11, 21) are engraved on each of the tops (10, 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.

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 bottom edge point shape (bottom end point shape) to allow the top surface to be correctly landed on the ground reference point a0, the first point a1, the second point a2 and the third point a3, ) Can be formed.

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.

Vertical holding means 40 is provided at the upper end of the lower chuck 10.

The vertical holding means 40 includes a uniaxial body 41 coupled with the upper four sides of the lower chuck 10 and having a first shaft 41a at the center of both sides thereof, A connecting portion 42b integrally connecting a pair of arms 42a spaced from both sides of the pair of arms 42a and the rear ends of the pair of arms 42a; And a second shaft 42d protruding rearward at the center of the rear surface of the connecting portion 42b at the inner side of the first shaft boss 42a and the second shaft boss 42c, A biaxial support 43 provided with a second axis boss 43a corresponding to the axis 42d and a handle 44 connected to the rear surface of the biaxial support 43 so as to be vertically rotatable .

A fixing screw 41c passing through a plurality of screw through holes 41b formed in the single-shaft member 41 is coupled to the lower chuck 10 so as to engage the single-shaft member 41 to the upper end of the lower chuck 10, Can be fastened to a screw fastening hole (41d) formed on the front and rear surfaces of the housing.

It is preferable that a gap is formed between the uniaxial body 41 and the lower chuck 10 so as to be able to rotate uniaxially between the rear wall of the uniaxial member 41 and the connecting portion 42b of the uniaxial supporting biaxial member 42 .

The handle 44 may be formed of a handle 44a for gripping the spinal cord and a connecting portion 44b formed forwardly at the upper end of the handle 44a and the hinge portion 44b may be formed at the distal end of the connecting portion 44b. And the tip end of the connecting portion 44b is inserted between the pair of hinge pieces 44d formed on the upper side of the rear surface of the biaxial support 43 to form the hinge hole 44e of the hinge piece 44d, And the hinge pin 44f is inserted into the hinge hole 44c of the connecting portion 44b so as to be rotatable up and down with respect to the biaxial support body 43. [

Bearings 45 and 46 are inserted between the first shaft 41a and the first shaft boss 42c and between the second shaft 42d and the second shaft boss 43a to form a single- It is preferable to make it more smoothly.

The bearing 45 prevents the out race from being inserted into the first axis boss 42c to be idle and prevents the first axis 41a from being inserted into the inner race.

The bearing 46 is configured such that the out race is press-fitted into the second shaft boss 43a and does not idle, and the second shaft 42d is press-fitted into the inner race so as not to rotate.

The present invention further includes a length adjusting means (50) capable of one-touch adjusting the combined length of the lower chuck (10) and the upper chuck (20).

The length adjusting means 50 includes a motor main body 52 fixed to an inner lower end of the upper chuck 20 and a hollow rotary shaft 52 rotatably installed on the motor main body 52 and having a female screw portion 53a formed on an inner peripheral surface thereof. A reversible drive motor 51 provided with a motor 53; A drive screw 54 having a lower end fixed to the lower end of the lower chuck 10 and having a male screw portion 54a screwed to the female screw portion 53a of the rotary shaft 53; A controller (C) installed in the housing part (55) formed in the biaxial support (43) for controlling the drive motor (51); A battery B accommodated in the storage part 55 and supplying power to the drive motor 51 and the control part C; And a length adjustment switch (S) provided at the upper end of the biaxial support (43).

The driving motor 51 is inserted into the upper chuck 20 and fastened to the lower surface of the motor main body 52 by a fixing screw 52a passing through the lower end plate of the upper chuck 20, ).

The driving screw 54 has a flange portion 54b formed at the lower end thereof and a fixing screw 54c passing through the lower end plate of the lower sheath 10 is fastened to the flange portion 54b, Can be fixed.

The storage portion 55 is formed in a rear opened form and includes a cover 55a for opening and closing the rear opening portion.

A hook 55b is formed at an upper end of the housing 55 and a hook 55c is formed at an upper end of the cover 55a so that the hook 55c is hooked on the hook 55b, The cover 55a can be fixed to the back surface of the biaxial support 43 by fastening the fixing screw 55d horizontally passing through the lower end of the biaxial support 43 to the rear surface of the biaxial support 43. [

When replacing the battery B, the cover 55a can be removed by releasing the fixing screw 55d and releasing the latching piece 55c from the latching protrusion 55b.

The control unit C drives the drive motor 51 to rotate for a short period of time when the length adjusting switch S is shortened in the extension direction so that the combined length of the lower chuck 10 and the upper chuck 20 is controlled by the scales 11, The driving motor 51 continues to be driven in the forward rotation so that the combined length of the lower chuck 10 and the upper chuck 20 continues to increase, The drive motor 51 is driven in a short reverse rotation so that the combined length of the lower chuck 10 and the upper chuck 20 is larger than the larger scale of the scales 11 and 21 And the drive motor 51 is continuously rotated in the reverse direction by continuously pressing the length adjustment switch S in the reduction direction so that the coupling length between the lower chuck 10 and the upper chuck 20 is continuously reduced .

The control unit C and the battery B installed in the storage unit 55 can be electrically connected to each other through electric wires in the storage unit 55. The control unit C and the battery B can be electrically connected to each other by a drive motor 51, When the switch S provided at the upper end of the supporting member 43 is electrically connected to the control unit C and the battery B provided in the receiving unit 55, the electric wire is electrically connected to the charge holding member 43 And the upper chuck 20, as shown in FIG.

However, since such an electrical connection structure is a conventional technology and is not a core constitution of the present invention, a detailed description thereof will be omitted.

Hereinafter, the operation of the leveling device for level measurement according to the present invention will be described.

The leveling apparatus for leveling according to the present invention is a device for adjusting the height of a leveling apparatus as described in the background art of the present invention in which a table spinal cord is placed on a table and the landing rods 36 are connected to a ground reference point a0, (a2), the third point (a3), and the like, the machine number is used to read the scale of the table using the leveler and perform the geodetic survey.

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) Even if it is applied to the landing rod 36, the vibration and impact of the surroundings are not buffered by the buffer spring 34 so that the vibration of the periphery of the landing rod 36 is not transmitted to the tops 10 and 20, , 21) can be correctly 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 behind the first point a1, and the table spinal cord turns the skeleton in place (first point) Looking at this leveler, in the third step where the machine reads the scale scale of the first point (a1) from the second observation point (b2) to the leveling machine, the table spinal column lifts the skeleton when the spinal cord switches its direction from its original position The direction of the mark chuck can be switched by turning the markers 10 and 20 in a state in which the land stick 36 is placed on the ground of the first point without having to lower the mark chuck again, The error can be surely excluded.

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 with respect to the grounding rod 36, 10 and 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.

Meanwhile, the chucks 10 and 20 can be accurately and vertically erected by the horizontal holding means 40.

That is, when the table spinal cord grips the handle 44 and the landing rod 36 is moved to the ground reference point a0, the first point a1, the second point a2, the third point a3 (see Fig. 11) The first shaft 41 and the first shaft 41a are coupled to the first shaft 41a and the second shaft 42b of the first shaft supporting two-shaft member 42 by the weight of the front and rear supports 10 and 20, And the uniaxial supporting biaxial member 42 is rotated about the first axis boss 42c with reference to the second axis 42d and the second axis boss 43a of the biaxial support 43 as reference So that the tops 10 and 20 are perpendicular to each other.

Since the bearings 45 and 46 are provided between the first shaft 41a and the first shaft boss 42c and between the second shaft 42d and the second shaft boss 43a, The biaxial rotation can be performed very smoothly.

In this state, if the spinal cord is lightly lowered on the ground such as the ground reference point a0, the first point a1, the second point a2, the third point a3, etc., Are installed precisely perpendicular to the ground such as the ground reference point a0, the first point a1, the second point a2, the third point a3, and the like.

In this case, since the spinal cord can hold the handle 44 in comparison with the case where the spinal cord directly holds the skulls 10 and 20, the spinal cord can handle the skulls 10 and 20 conveniently, , 20) in a vertical state.

Since the handle 44 is vertically rotatably connected to the back surface of the biaxial support 43, the angle of the handle 44 with respect to the skeletons 10 and 20 is adjusted according to the physique condition such as the extension of the spinal cord. So that it is adjusted to a comfortable angle for gripping, making use more convenient (see FIG. 8).

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

The reference point a0, the first point a1, the second point a2, and the third point a3 (see FIG. 5) where the surveying points b1, b2, 11), the length of the coupling between the lower chuck 10 and the upper chuck 20 can be adjusted by manipulating the length adjustment switch S on the table spinal cord.

The length can be adjusted 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 length.

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 catches the handle 44 and moves the landing rods 36 to the ground reference point a0, the first point a1, it is possible to adjust the length only by operating the length adjustment switch S in a state where the ground is located on the ground surface of the third point a3 and the ground point of the third point a3.

The driving motor 51 is rotated in a short direction in the normal direction under the control of the control unit C so that the female screw portion 53a of the rotary shaft 53 and the driving screw The drive screw 54 is lowered by one large scale of the scales 11 and 21 with the drive motor 51 as a reference by the screw action of the male screw portion 54a of the lower screw 10, Since the combined landing rods 36 are landed on the ground surface, the upper chuck 20 having the driving motor 51 and the driving motor 51 fixed thereto is raised and the lower chuck 10 and the upper chuck 20, Is extended by one large scale of the scale (11, 21).

The driving motor 51 continues to rotate in the forward direction under the control of the control unit C and the driven member 53a of the rotary shaft 53 is driven The driving screw 54 continues to descend with the driving motor 51 as a reference due to the screw action of the male screw portion 54a of the screw 54 and the landing rod 36 coupled to the lower chuck 10 The upper chuck 20 on which the driving motor 51 and the driving motor 51 are fixed is raised so that the combined length of the lower chuck 10 and the upper chuck 20 continues to be extended .

The driving motor 51 is rotated in the reverse direction by a short rotation under the control of the control unit C and the driven shaft 53 is rotated by the female screw portion 53a of the rotary shaft 53 The drive screw 54 is lifted by one large scale of the scales 11 and 21 by the screw action of the male screw portion 54a of the screw 54, The upper chuck 20 to which the driving motor 51 and the driving motor 51 are fixed is lowered and the lower chuck 10 and the upper chuck 20 ) Is reduced by one large scale of the scales (11, 21).

The driving motor 51 continues to rotate in the opposite direction under the control of the control section C and the driving of the female screw section 53a of the rotary shaft 53 The driving screw 54 continues to rise when the drive motor 51 is positioned with reference to the screw action of the male screw portion 54a of the screw 54. The landing rod 36 coupled to the lower chuck 10 The upper chuck 20 having the driving motor 51 and the driving motor 51 fixed is lowered and the combined length of the lower chuck 10 and the upper chuck 20 is continuously reduced .

In the case of storing or transporting the skeleton, the space required for storing and transporting can be minimized by controlling the shortest length to the extent that the upper end of the lower chuck 10 and the upper end of the upper chuck 20 coincide with each other.

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: vertical holding means 41: one-
41c: first shaft 42: single shaft supporting biaxial member
42c: first axis boss 42d: second axis
43: two-shaft support 43a: second shaft boss
44: handle 45, 46: bearing
50: length adjusting means 51: drive motor
53: rotating shaft 53a: female thread portion
54: drive screw 54a:
C: Control section B: Battery
S: Length control switch

Claims (1)

(21) having an open top and a closed bottom and having a scale (11) engraved on its front side, an elongated barrel having an open top and a closed bottom, and a scale (21) And the upper chuck 20 is inserted into the lower chuck 10 so as to be adjustable in length by means of a slide stretchable type. The lower chuck 20 is provided with a rotary cushioning pad Means (30); Vertical holding means 40 coupled to the upper end of the lower chuck 10 so that the lower chuck 10 and the upper chuck 20 are automatically vertical; And a length adjusting means (50) for adjusting a length of engagement between 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 inner peripheral portion is inserted into a ring groove 39a formed in the outer peripheral surface of the bearing receiving portion 31b and an outer peripheral portion is inserted into a ring groove 39b formed in the inner peripheral surface of the casing 35 to form the casing 35 and the bearing receiving portion 31b And a ring (39) for relatively rotatably connecting the ring-
The vertical holding means 40 includes a monoaxial body 41 coupled to the upper chuck 10 in a state of wrapping the upper four sides thereof and having a first shaft 41a at the center of both sides thereof; A connection portion 42b integrally connecting a pair of arms 42a spaced from both sides of the monobasic body 41 and a rear end portion of the pair of arms 42a, The first shaft boss 42c and the second shaft 42d protruded rearward at the center of the rear surface of the connecting portion 42b are provided on the inner side surfaces of the pair of arms 42a, )Wow; A biaxial support 43 having a second axis boss 43a corresponding to the second axis 42d; A handle (44) vertically rotatably connected to the rear surface of the biaxial support (43); And bearings 45 and 46 inserted between the first shaft 41a and the first shaft boss 42c and between the second shaft 42d and the second shaft boss 43a,
The length adjusting means 50 includes a motor main body 52 fixed to an inner lower end of the upper chuck 20 and a hollow rotary shaft 52 rotatably installed on the motor main body 52 and having a female screw portion 53a formed on an inner peripheral surface thereof. A reversible drive motor 51 provided with a motor 53; A drive screw 54 having a lower end fixed to the lower end of the lower chuck 10 and having a male screw portion 54a screwed to the female screw portion 53a of the rotary shaft 53; A controller (C) installed in the housing part (55) formed in the biaxial support (43) for controlling the drive motor (51); A battery B accommodated in the storage part 55 and supplying power to the drive motor 51 and the control part C; And a length adjustment switch (S) provided at an upper end of the biaxial support (43).

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