CN219265289U

CN219265289U - Micro-rotation angle adjusting device of theodolite

Info

Publication number: CN219265289U
Application number: CN202320305521.2U
Authority: CN
Inventors: 郭承哲; 潘乔; 高琪; 李晶晶
Original assignee: Jsti Group Inspection And Certification Co ltd
Current assignee: Jsti Group Inspection And Certification Co ltd
Priority date: 2023-02-24
Filing date: 2023-02-24
Publication date: 2023-06-27
Anticipated expiration: 2033-02-24

Abstract

The utility model discloses a micro-rotation angle adjusting device of a theodolite, which relates to the technical field of measuring instruments and comprises a theodolite bracket and a rotating shaft arranged on one side surface of the theodolite bracket, wherein an adjusting disc is arranged on the tail end surface of the rotating shaft, a micro-rotation angle adjusting mechanism is arranged in the adjusting disc and used for carrying out micro-adjustment on the horizontal direction of the rotating shaft so as to ensure the measuring precision of the theodolite, and an overspeed protection mechanism is arranged in the micro-rotation angle adjusting mechanism. According to the utility model, the pinion is driven to synchronously rotate under the meshing action of the large gear and the pinion, so that the rotating shaft is regulated by small torsion force, and the magnetic attraction force is larger at the moment because the magnetism of the corresponding surfaces of the electromagnet and the magnet filling block is opposite, so that the rotation of the regulating shaft is limited by the magnetic attraction force.

Description

Micro-rotation angle adjusting device of theodolite

Technical Field

The utility model relates to the technical field of measuring instruments, in particular to a micro-rotation angle adjusting device of a theodolite.

Background

Theodolites are the primary goniometer in the measuring work. The telescope comprises a telescope, a horizontal scale, a vertical scale, a level gauge, a base and the like. During measurement, the theodolite is placed on a tripod, the middle of the theodolite is aligned to an overground measuring station by using a plumb ball or an optical counter, the theodolite is leveled by using a level gauge, a telescope is used for aiming a measuring guideline, and a horizontal angle and a vertical angle are measured by using a horizontal dial and a vertical dial. Theodolites are divided into two types, optical theodolites and electronic theodolites, the most common ones being electronic theodolites.

The existing electronic theodolite is internally provided with a rotating shaft which is used for bearing radial load, so that the rotating shaft has the requirement of fine adjustment of the rotating angle in the using process, the implementation scheme of fine adjustment of the rotating shaft in the existing electronic theodolite is realized by installing a reduction gear set, horizontal angle adjustment of the rotating shaft is realized by installing the reduction gear set, and a locking device is additionally arranged to lock a gear, but the reduction gear set is manually adjusted, and the adjusting angle is overlarge due to different twisting using forces of different users in the manual adjusting process, so that the adjusting effect is influenced.

Disclosure of Invention

The utility model provides a micro-rotation angle adjusting device of a theodolite, which has the advantage of preventing excessive adjustment and is used for solving the problems that the adjustment angle is too large and the adjustment effect is affected because different users twist different using forces in the manual adjustment process because of a reduction gear set or manual adjustment.

In order to achieve the purpose of preventing excessive adjustment, the utility model provides the following technical scheme: the utility model provides a little corner adjusting device of theodolite, includes the theodolite support and installs the pivot at theodolite support one side surface, the terminal surface mounting of pivot has the adjustment disk, the internally mounted of adjustment disk has little corner adjustment mechanism, little corner adjustment mechanism is used for carrying out the fine adjustment to the horizontal direction of pivot thereby ensures the measurement accuracy of theodolite, little corner adjustment mechanism's internally mounted has the overspeed protection mechanism, overspeed protection mechanism is used for providing the overspeed protection to little corner adjustment mechanism and prevents that the adjustment corner is too big.

As a preferable technical scheme of the utility model, the micro-rotation angle adjusting mechanism comprises an adjusting component and a connecting component, wherein the connecting component is arranged on the tail end surface of the rotating shaft, and the connecting component is arranged inside the adjusting disc.

As a preferable mode of the present utility model, the connection assembly includes a mounting shaft mounted on an end surface of the rotating shaft, an outer side surface of the mounting shaft being movably mounted inside the adjustment plate, and a pinion mounted on an end surface of the mounting shaft.

As a preferable technical scheme of the utility model, the adjusting assembly comprises an adjusting shaft and a holding knob, wherein the adjusting shaft is movably arranged in the adjusting disc, one end surface of the adjusting shaft extends to the outer side surface of the adjusting disc, a rotating shaft is arranged on one end surface of the adjusting shaft, the holding knob is arranged on one end surface of the rotating shaft, a large gear is arranged on the other end surface of the adjusting shaft, the large gear is meshed with the small gear, and the small gear is driven to synchronously rotate under the meshing action of the large gear and the small gear, so that the rotating shaft is adjusted through small torsion.

As a preferable technical scheme of the utility model, the overspeed protection mechanism comprises a control component and an overspeed protection component, wherein the control component is arranged in the adjusting shaft, and the overspeed protection component is arranged on the outer side surface of the adjusting shaft.

In order to achieve the effect of stably adjusting the micro-rotation angle no matter how large the rotation force is, as a preferable technical scheme of the utility model, the control component comprises a connecting spring and a sliding rheostat, a fixed cavity is formed in the rotating shaft, the connecting spring is arranged at the inner wall of the fixed cavity, a movable pulling piece is arranged on the tail end surface of the connecting spring, when the rotation force is too large, the larger the centrifugal force applied to the movable pulling piece is, the larger the displacement of the movable pulling piece is, the sliding rheostat is arranged at the inner wall of the fixed cavity, the movable pulling piece is connected to the outer side surface of the sliding rheostat, and therefore when the moving position of the movable pulling piece is larger, the resistance value of the sliding rheostat is larger.

As a preferable technical scheme of the utility model, the overspeed protection assembly comprises electromagnets and magnet filling blocks, wherein a protection sleeve ring is arranged at the inner wall of a regulating disc on the outer side surface of the regulating shaft, a plurality of electromagnets are uniformly distributed at the inner wall of the protection sleeve ring, one end of a sliding rheostat is electrically connected to an internal power supply of the theodolite, the other end of the sliding rheostat is electrically connected to the electromagnets, at the moment, the larger the current flowing through the electromagnets is, the larger the magnetism carried by the electromagnets is, and a plurality of magnet filling blocks are uniformly distributed on the outer side surface of the regulating shaft.

Compared with the prior art, the utility model provides a micro-rotation angle adjusting device of a theodolite, which has the following beneficial effects: according to the micro-rotation angle adjusting device of the theodolite, the pinion is driven to synchronously rotate through the meshing action of the large gear and the pinion, so that the rotating shaft is adjusted through smaller torsion force, and the magnetic attraction force is larger at the moment due to the fact that the magnetism of the corresponding surface of the electromagnet and the corresponding surface of the magnet filling block is opposite, and the rotation of the adjusting shaft is limited through the magnetic attraction force.

Drawings

FIG. 1 is a schematic view of the external structure of the present utility model;

FIG. 2 is a schematic view of the external structure of the present utility model;

FIG. 3 is a schematic view of the internal structure of the tuning disk of the present utility model;

FIG. 4 is an enlarged schematic view of the portion A of FIG. 3 according to the present utility model;

fig. 5 is a schematic view of the external structure of the adjusting shaft of the present utility model.

In the figure: 1. a theodolite support; 2. a rotating shaft; 3. an adjusting plate; 4. a mounting shaft; 5. a pinion gear; 6. an adjusting shaft; 7. holding a knob; 8. a large gear; 9. a fixed cavity; 10. a connecting spring; 11. a movable plectrum; 12. a slide rheostat; 13. a protective collar; 14. an electromagnet; 15. a magnet filling block; 16. and (3) rotating the shaft.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, the utility model discloses a micro-angle adjusting device of a theodolite, which comprises a theodolite bracket 1 and a rotating shaft 2 arranged on one side surface of the theodolite bracket 1, wherein an adjusting disc 3 is arranged on the tail end surface of the rotating shaft 2, a micro-angle adjusting mechanism is arranged in the adjusting disc 3 and is used for carrying out micro-adjustment on the horizontal direction of the rotating shaft 2 so as to ensure the measuring precision of the theodolite, and an overspeed protection mechanism is arranged in the micro-angle adjusting mechanism and is used for providing overspeed protection for the micro-angle adjusting mechanism so as to prevent the adjustment angle from being overlarge.

Specifically, the micro-angle adjusting mechanism comprises an adjusting component and a connecting component, wherein the connecting component is arranged on the tail end surface of the rotating shaft 2, the connecting component is arranged in the adjusting disc 3, the connecting component comprises a mounting shaft 4 and a pinion 5, the mounting shaft 4 is arranged on the tail end surface of the rotating shaft 2, the outer side surface of the mounting shaft 4 is movably arranged in the adjusting disc 3, and the pinion 5 is arranged on the tail end surface of the mounting shaft 4.

Further, the adjusting part includes regulating spindle 6 and holds knob 7, regulating spindle 6 movable mounting is in the inside of regulating disk 3, the one end surface of regulating spindle 6 extends to the outside surface of regulating disk 3, the one end surface mounting of regulating spindle 6 has axis of rotation 16, hold knob 7 and install the one end surface at axis of rotation 16, the other end surface mounting of regulating spindle 6 has gear wheel 8, gear wheel 8 and pinion 5 intermeshing, when needing to adjust pivot 2, the user can hold knob 7 with the finger, then rotate and hold knob 7 thereby drive axis of rotation 16 rotation for regulating spindle 6 synchronous rotation drives gear wheel 8 rotation, through gear wheel 8 and pinion 5's meshing effect, drive pinion 5 synchronous rotation, thereby realize the regulation to pivot 2 through less torsional force.

Further, the overspeed protection mechanism includes control assembly and overspeed protection assembly, control assembly installs in the inside of regulating shaft 6, overspeed protection assembly installs the outside surface at regulating shaft 6, control assembly includes coupling spring 10 and slide rheostat 12, fixed chamber 9 has been seted up to the inside of axis of rotation 16, coupling spring 10 installs the inner wall department in fixed chamber 9, coupling spring 10's terminal surface mounting has movable plectrum 11, in the in-process of rotatory axis of rotation 16, movable plectrum 11 receives centrifugal force's effect and moves in fixed chamber 9, coupling spring 10 is tensile, slide rheostat 12 installs the inner wall department in fixed chamber 9, movable plectrum 11 is connected to the outside surface of slide rheostat 12, when the rotational force is too big, the centrifugal force that movable plectrum 11 received is big simultaneously, the displacement is also big at this moment, movable plectrum 11 is connected on the gleitbretter of slide rheostat 12, consequently, when movable plectrum 11 moved the position is big, slide rheostat 12's resistance is big.

Further, the overspeed protection assembly comprises an electromagnet 14 and a magnet filling block 15, the inner wall of the adjusting disk on the outer side surface of the adjusting shaft 6 is provided with a protection sleeve ring 13, a plurality of electromagnets 14 are uniformly distributed on the inner wall of the protection sleeve ring 13, a plurality of magnet filling blocks 15 are uniformly distributed on the outer side surface of the adjusting shaft 6, and the magnetic attraction force is larger at the moment because the magnetism of the corresponding surfaces of the electromagnets 14 and the magnet filling blocks 15 is opposite, the rotation of the adjusting shaft 6 is limited by the magnetic attraction force, so that the effect of stably adjusting micro-rotation angles is achieved no matter how much rotation force is.

The working principle and the using flow of the utility model are as follows: when the rotating shaft 2 needs to be adjusted, a user can hold the hand-held knob 7 by fingers and then rotate the hand-held knob 7 so as to drive the rotating shaft 16 to rotate, so that the adjusting shaft 6 synchronously rotates so as to drive the large gear 8 to rotate, and the small gear 5 synchronously rotates under the meshing action of the large gear 8 and the small gear 5, so that the rotating shaft 2 is adjusted by small torsion force, and in the process of rotating the rotating shaft 16, the movable plectrum 11 moves in the fixed cavity 9 under the action of centrifugal force, and the connecting spring 10 is stretched;

when the rotation force is overlarge, the centrifugal force borne by the movable pulling piece 11 is larger, the displacement is larger, the movable pulling piece 11 is connected to the sliding sheet of the slide rheostat 12, therefore, when the moving position of the movable pulling piece 11 is larger, the resistance value of the slide rheostat 12 is larger, one end of the slide rheostat 12 is electrically connected to an internal power supply of the theodolite, the other end of the slide rheostat 12 is electrically connected to the electromagnet 14, the larger the current flowing through the electromagnet 14 is, the larger the magnetism of the electromagnet 14 is, and the larger the magnetism of the electromagnet 14 is opposite to the magnetism of the corresponding surface of the magnet filling block 15, the larger the magnetism attraction is, and the rotation of the adjusting shaft 6 is limited through the magnetism attraction, so that the effect of stably adjusting the micro-rotation angle can be achieved no matter how much the rotation force is.

It should be noted that in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a micro-angle adjusting device of theodolite, includes theodolite support (1) and installs pivot (2) at theodolite support (1) one side surface, its characterized in that: the device is characterized in that an adjusting disc (3) is arranged on the tail end surface of the rotating shaft (2), a micro-angle adjusting mechanism is arranged in the adjusting disc (3) and used for carrying out fine adjustment on the horizontal direction of the rotating shaft (2) so as to ensure the measurement accuracy of the theodolite, an overspeed protection mechanism is arranged in the micro-angle adjusting mechanism and used for providing overspeed protection for the micro-angle adjusting mechanism so as to prevent the adjustment angle from being overlarge.

2. The micro-angle adjustment device of a theodolite according to claim 1, wherein: the micro-rotation angle adjusting mechanism comprises an adjusting component and a connecting component, wherein the connecting component is arranged on the tail end surface of the rotating shaft (2), and the connecting component is arranged in the adjusting disc (3).

3. A micro-angle adjustment device for a theodolite according to claim 2, wherein: the connecting assembly comprises a mounting shaft (4) and a pinion (5), the mounting shaft (4) is mounted on the tail end surface of the rotating shaft (2), the outer side surface of the mounting shaft (4) is movably mounted in the adjusting disc (3), and the pinion (5) is mounted on the tail end surface of the mounting shaft (4).

4. A micro-angle adjustment device for a theodolite according to claim 2, wherein: the adjusting assembly comprises an adjusting shaft (6) and a hand-held knob (7), wherein the adjusting shaft (6) is movably mounted inside the adjusting disc (3), one end surface of the adjusting shaft (6) extends to the outer side surface of the adjusting disc (3), a rotating shaft (16) is mounted on one end surface of the adjusting shaft (6), the hand-held knob (7) is mounted on one end surface of the rotating shaft (16), a large gear (8) is mounted on the other end surface of the adjusting shaft (6), and the large gear (8) is meshed with the small gear (5).

5. The micro-angle adjustment device of a theodolite according to claim 4, wherein: the overspeed protection mechanism comprises a control component and an overspeed protection component, wherein the control component is arranged in the adjusting shaft (6), and the overspeed protection component is arranged on the outer side surface of the adjusting shaft (6).

6. The micro-angle adjustment device of a theodolite according to claim 5, wherein: the control assembly comprises a connecting spring (10) and a slide rheostat (12), a fixed cavity (9) is formed in the rotating shaft (16), the connecting spring (10) is installed at the inner wall of the fixed cavity (9), a movable poking piece (11) is installed on the tail end surface of the connecting spring (10), the slide rheostat (12) is installed at the inner wall of the fixed cavity (9), and the movable poking piece (11) is connected to the outer side surface of the slide rheostat (12).

7. The micro-angle adjustment device of a theodolite according to claim 5, wherein: the overspeed protection assembly comprises electromagnets (14) and magnet filling blocks (15), a protection sleeve ring (13) is arranged at the inner wall of a regulating disc on the outer side surface of the regulating shaft (6), a plurality of electromagnets (14) are uniformly distributed at the inner wall of the protection sleeve ring (13), and a plurality of magnet filling blocks (15) are uniformly distributed on the outer side surface of the regulating shaft (6).