CN213207060U

CN213207060U - Laser level meter

Info

Publication number: CN213207060U
Application number: CN202021991232.5U
Authority: CN
Inventors: 张欣星; 吴卫强; 陆文明
Original assignee: Suzhou Guangdehao Construction Engineering Management Consulting Co ltd
Current assignee: Suzhou Guangdehao Construction Engineering Management Consulting Co ltd
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2021-05-14
Anticipated expiration: 2030-09-11

Abstract

The application relates to the technical field of measurement, in particular to a laser level, which comprises a level body and a triangular support positioned at the bottom of the level body, wherein the triangular support comprises a seat plate and three support legs fixed at the bottom of the seat plate; the slide bar is provided with vertical teeth along the axial direction, and a lifting gear meshed with the vertical teeth is arranged in the seat plate; a rotating shaft is arranged on the lifting gear, the rotating shaft is erected in the seat plate, an external thread is arranged at one end of the rotating shaft, and a screwing nut is arranged on the rotating shaft; the screwing nut is connected with the external thread by screw thread and abuts against the side wall of the seat board. The lifting gear is fixed by applying pretightening force to the rotating shaft through screwing the nut. This application has the effect that reduces and causes measuring error because of vertical tooth gliding.

Description

Laser level meter

Technical Field

The application relates to the technical field of measurement, in particular to a laser level meter.

Background

The laser level meter guides laser beams emitted by a laser into a telescope tube, enables the laser beams to emit horizontal laser beams along the direction of a collimation axis, is provided with a wave band plate in front of a telescope objective lens, enables the horizontal laser beams to be diffracted, and obtains bright and fine cross laser light plates in the focusing range of the wave band plate through the focusing of a telescope, thereby accurately illuminating a target.

Current laser level appearance includes the A-frame of spirit level body and its bottom, during the use, installs the spirit level body on the A-frame, utilizes gear and vertical tooth meshing on the A-frame, goes up and down the spirit level body. When the level meter is lifted, the gear is rotated to convey the level meter body to a required height, the rotation is stopped, and the level meter body is fixed by utilizing the friction force between the gear and the vertical teeth.

In view of the above-mentioned related art, the inventor thinks that after the level body is adjusted to a required height, the gear stops rotating, and because there is a backlash between the gear and the vertical tooth, the gear can slightly rotate because of the backlash, causing the vertical tooth to slightly move down with the gear, causing an error.

SUMMERY OF THE UTILITY MODEL

In order to reduce the condition that causes measuring error because of vertical tooth gliding, this application provides a laser level meter.

The application provides a laser level meter adopts following technical scheme:

a laser level comprises a triangular support and a level body fixed above the triangular support, wherein the triangular support comprises a seat plate and three support legs fixed at the bottom of the seat plate, a sliding rod is arranged on the seat plate, and the sliding rod penetrates through the seat plate and slides along the vertical direction; the sliding rod is provided with vertical teeth along the axial direction of the sliding rod, and a lifting gear meshed with the vertical teeth is arranged in the seat plate; the lifting gear is provided with a rotating shaft, the rotating shaft penetrates through the seat plate, one end of the rotating shaft is provided with an external thread, and the rotating shaft is provided with a screwing nut; the screwing nut is in threaded connection with the external thread.

Through adopting above-mentioned technical scheme, rise the spirit level body to a take the altitude after, need in time fix elevating gear. Specifically, the screwing nut is rotated to enable the screwing nut to abut against the side wall of the seat plate, the screwing nut is continuously rotated, and the rotating shaft moves to enable the lifting gear to abut against the side wall in the seat plate. The rotating shaft is fixed from two different positions, so that the lifting gear is fixed, and the situation of measurement errors caused by the fact that the vertical teeth slide downwards is reduced.

Optionally, a pair of shaft holes is formed in the seat plate, two ends of the rotating shaft are respectively inserted into the corresponding shaft holes, and two ends of the rotating shaft extend out of the corresponding shaft holes; each all be equipped with the round on the inner wall in shaft hole and increase the burr that rubs, the circumferential surface of rotation axis and the position that is close to corresponding shaft hole all are equipped with and increase the dimpling that rubs that the burr corresponds with increasing.

By adopting the technical scheme, after the rotation shaft stops rotating, the condition of rotation of the rotation shaft can be reduced by utilizing the friction force between the friction increasing convex lines and the friction increasing concave lines.

Optionally, a gear cavity is further formed in the seat plate, and the lifting gear is located in the gear cavity.

Through adopting above-mentioned technical scheme, place lifting gear in the gear, can effectively reduce the dust and glue lifting gear on, reduce lifting gear's wearing and tearing, and then reduce the production of error.

Optionally, the bottom of the seat plate is provided with a sleeve, the sleeve is vertically arranged, and the sliding rod is sleeved in the sleeve.

Through adopting above-mentioned technical scheme, use the sleeve pipe cover to establish the slide bar, can make the slide bar have definite track, reduce the condition that the slide bar rocked.

Optionally, a guide groove is formed in the inner side wall of the sleeve, and the guide groove extends from the top to the bottom of the sleeve; and the circumferential surface of the sliding rod is provided with a guide strip corresponding to the guide groove.

By adopting the technical scheme, the guide bars slide in the guide grooves, and the relative rotation of the slide bars in the slide grooves is reduced.

Optionally, a threaded hole is formed in the bottom of the level body, and a screwing thread is formed in the side wall of the top of the sliding rod; the spirit level body is in threaded connection with the screwing thread through a threaded hole.

Through adopting above-mentioned technical scheme, with spirit level body with threaded connection on the A-frame for spirit level body convenient to detach gets off.

Optionally, three of the legs are disposed at equal angles with respect to the axis of the casing.

Through adopting above-mentioned technical scheme, the bedplate can be supported comparatively evenly to three landing legs of waiting the angle setting, increases the stability of A-frame.

Optionally, a connecting short rod is arranged between each supporting leg and the sleeve; each one end of connecting the quarter butt all is fixed at sheathed tube circumference surface, each the other end of connecting the quarter butt all is fixed on the lateral wall that corresponds the landing leg.

By adopting the technical scheme, the connecting short rod is connected with the sleeve, the verticality of the sleeve is further improved, and the condition that the sleeve shakes when the sliding rod slides up and down is reduced.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the setting of the nut of screwing, rotate the nut of screwing and make the nut of screwing support on the lateral wall of bedplate, continue to rotate the nut of screwing, the rotation axis removes, makes the elevating gear support on the lateral wall in the bedplate. Fixing the rotating shaft from two different positions so as to fix the lifting gear, and reducing the situation of measurement errors caused by the downward sliding of the vertical teeth;

2. through the arrangement of the guide strip and the guide groove, the guide strip slides in the guide groove, and the relative rotation of the sliding rod in the sliding groove is reduced.

Drawings

FIG. 1 is an overall schematic view of a laser level of an embodiment of the present application;

FIG. 2 is a partial cross-sectional view of a laser level;

FIG. 3 is a view showing the fitting relationship between the sleeve and the slide bar;

FIG. 4 is an exploded view of the seat plate and the rotating shaft;

FIG. 5 is a diagram of the fit relationship of the slide bar and the level body.

Description of reference numerals: 1. a spirit level body; 2. a triangular bracket; 3. a slide bar; 4. a rotating shaft; 11. a threaded hole; 21. a seat plate; 22. a support leg; 23. an inner cavity of the gear; 24. a sleeve; 241. a guide groove; 25. connecting a short rod; 26. a shaft hole; 261. friction increasing convex lines; 27. a through hole; 31. vertical teeth; 32. screwing the threads; 33. conducting bars; 41. a lifting gear; 42. increasing the friction concave lines; 43. an external thread; 44. rotating the block; 45. and (5) screwing the nut.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a laser level meter. Referring to fig. 1, a laser level comprises a tripod 2 and a level body 1 fixed above the tripod 2. The triangular support 2 comprises a cylindrical seat plate 21 and three support legs 22 fixed at the bottom of the seat plate 21, a slide rod 3 capable of sliding in the vertical direction is arranged on the seat plate 21, and a lifting gear 41 (refer to fig. 2) for driving the slide rod 3 to lift is further arranged in the seat plate 21.

Referring to fig. 2, a through hole 27 is formed in the middle of the upper surface of the seat plate 21, a sleeve 24 is further disposed at the bottom of the seat plate 21, the inner diameter of the sleeve 24 is smaller than the diameter of the through hole 27, and the outer diameter of the sleeve 24 is larger than the diameter of the through hole 27. The top end of the sleeve 24 is fixed at the bottom of the seat plate 21, the position of the sleeve 24 corresponds to the position of the through hole 27, the slide rod 3 is arranged in the sleeve 24 in a penetrating way, and the slide rod 3 passes through the through hole 27 and can slide up and down in the sleeve 24. Referring to fig. 3, a pair of guide grooves 241 are provided on the inner sidewall of the sleeve 24, the pair of guide grooves 241 are symmetrically arranged about the axial line of the sleeve 24, each guide groove 241 is vertically arranged, and each guide groove 241 extends from the top end of the sleeve 24 to the bottom end of the sleeve 24. The circumferential surface of the sliding rod 3 is provided with a guide bar 33 corresponding to the guide groove 241, and the sliding of the guide bar 33 in the guide groove 241 prevents the sliding rod 3 from rotating relatively in the sleeve.

Referring to fig. 2, the surface of the slide bar 3 in its axial direction is provided with vertical teeth 31, the vertical teeth 31 extending from the top end to the bottom end of the slide bar 3. The interior of the seat plate 21 is further provided with a gear cavity 23, the gear cavity 23 is communicated with the through hole 27, the lifting gear 41 is positioned in the gear cavity 23, a gap is formed between the side wall of the lifting gear 41 and the side wall of the gear cavity 23, and the lifting gear 41 is provided with the rotating shaft 4. The up-down movement of the slide bar 3 can be realized by rotating the up-down gear 41 and engaging the up-down gear 41 with the vertical teeth 31.

Referring to fig. 4, the seat plate 21 is further provided with a pair of shaft holes 26, the two shaft holes 26 are horizontally disposed and located at two ends of the gear cavity 23, two ends of the rotating shaft 4 are respectively inserted into the corresponding shaft holes 26, and two ends of the rotating shaft 4 extend out of the corresponding shaft holes 26. The rotating shaft 4 is provided with an external thread 43 at one end extending out of the shaft hole 26, and the rotating shaft 4 is further provided with a screwing nut 45, wherein the screwing nut 45 is in threaded connection with the external thread 43. The other end of the rotating shaft 4 extending out of the shaft hole 26 is provided with a rotating block 44, the rotating block 44 is cylindrical, and the rotating block 44 is fixed to the rotating shaft 4. When the elevating gear 41 is fixed, the rotating shaft 4 is moved in a direction of tightening the nut 45 while abutting against the rotating block 44, and the side wall of the elevating gear 41 abuts against the side wall of the gear cavity 23. Holding the rotary block 44, the tightening nut 45 is rotated and the tightening nut 45 is pressed against the side wall of the seat plate 21, thereby fixing the lifting gear 41.

Referring to fig. 4, in order to further reduce the rotation of the lifting gear 41 after being fixed, a circle of friction increasing convex patterns 261 are provided on the sidewall of each shaft hole 26, friction increasing concave patterns 42 corresponding to the friction increasing convex patterns 261 are provided on the circumferential surface of the rotating shaft 4 and at positions close to the corresponding shaft holes 26, and the rotation of the lifting gear 41 is reduced by using the friction force between the friction increasing convex patterns 261 and the friction increasing concave patterns 42.

Referring to fig. 5, a threaded hole 11 is formed in the bottom of the level body 1, a screwing thread 32 is formed in the side wall of the top of the sliding rod 3, and the threaded hole 11 is in threaded connection with the screwing thread 32, so that the level body 1 is fixed to the top of the sliding rod 3.

Referring to fig. 1, in order to better support the level body 1, three legs 22 are disposed at equal angles with respect to the axial center line of a sleeve 24 such that a seat plate 21 is located at the middle of the three legs 22, and the three legs 22 uniformly support the seat plate 21. For better support of the sleeve 24, with the sleeve 24 in an upright position, a connecting stub 25 is provided between each leg 22 and the sleeve 24. Wherein, the circumference surface at sleeve pipe 24 is all fixed to the one end of each short rod 25 of connecting, and the other end of each short rod 25 of connecting all fixes on the lateral wall that corresponds landing leg 22, and each short rod 25 of connecting all is close to the position of sleeve pipe 24 bottom.

The implementation principle of the embodiment is as follows: when the sliding rod 3 moves up and down, the rotating block 44 is held, the rotating shaft 4 is rotated, and the rotating lifting gear 41 is meshed with the vertical teeth 31 to drive the sliding rod 3 to move up and down. By sliding the guide bar 33 in the guide groove 241, the rotation of the slide bar 3 with respect to the sleeve 24 can be reduced. After the level body 1 is lifted or lowered to a certain height, the rotation of the rotating block 44 is stopped, the rotating block 44 is held, the rotating shaft 4 stops rotating, the screwing nut 45 at the other end of the rotating shaft 4 is rotated to be abutted against the side wall of the seat plate 21, the screwing nut 45 is continuously rotated to enable the rotating shaft 4 to move horizontally, the lifting gear 41 is abutted against the side wall of the gear cavity 23, pre-tightening force is applied to the rotating shaft 4 from two sides, the rotating shaft 4 is fixed, the situation that the sliding rod 3 slides downwards due to the rotation of the rotating shaft 4 is reduced, and further the generation of errors is reduced.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a laser level meter, includes A-frame (2) and is fixed in spirit level body (1) above A-frame (2), its characterized in that: the triangular support (2) comprises a seat plate (21) and three support legs (22) fixed at the bottom of the seat plate (21), a sliding rod (3) is arranged on the seat plate (21), and the sliding rod (3) penetrates through the seat plate (21) and slides along the vertical direction; the sliding rod (3) is provided with vertical teeth (31) along the axial direction, and a lifting gear (41) meshed with the vertical teeth (31) is arranged in the seat plate (21); a rotating shaft (4) is arranged on the lifting gear (41), the rotating shaft (4) is arranged in the seat plate (21) in a penetrating mode, an external thread (43) is arranged at one end of the rotating shaft (4), and a screwing nut (45) is arranged on the rotating shaft (4); the screwing nut (45) is in threaded connection with the external thread (43).

2. The laser level of claim 1, wherein: the seat plate (21) is provided with a pair of shaft holes (26), two ends of the rotating shaft (4) are respectively arranged in the corresponding shaft holes (26) in a penetrating manner, and two ends of the rotating shaft (4) extend out of the corresponding shaft holes (26); each all be equipped with round increase friction burr (261) on the inner wall in shaft hole (26), the circumferential surface of rotation axis (4) and the position that is close to corresponding shaft hole (26) all are equipped with increase friction dimpled grain (42) that correspond with increase friction burr (261).

3. The laser level of claim 1, wherein: a gear cavity (23) is further formed in the seat plate (21), and the lifting gear (41) is located in the gear cavity (23).

4. The laser level of claim 1, wherein: the bottom of bedplate (21) is equipped with sleeve pipe (24), sleeve pipe (24) vertical setting, slide bar (3) cover is located in sleeve pipe (24).

5. The laser level of claim 4, wherein: a guide groove (241) is arranged on the inner side wall of the sleeve (24), and the guide groove (241) extends from the top to the bottom of the sleeve (24); the circumferential surface of the sliding rod (3) is provided with a guide strip (33) corresponding to the guide groove (241).

6. The laser level of claim 1, wherein: a threaded hole (11) is formed in the bottom of the level body (1), and screwing threads (32) are formed in the side wall of the top of the sliding rod (3); the level body (1) is in threaded connection with the screwing thread (32) through the threaded hole (11).

7. The laser level of claim 4, wherein: the three legs (22) are arranged at equal angles relative to the axial lead of the sleeve (24).

8. The laser level of claim 7, wherein: a connecting short rod (25) is arranged between each supporting leg (22) and the sleeve (24); one end of each connecting short rod (25) is fixed on the circumferential outer surface of the sleeve (24), and the other end of each connecting short rod (25) is fixed on the outer side wall of the corresponding supporting leg (22).