CN213932523U

CN213932523U - Laser tracking measurement rotation limiting mechanism

Info

Publication number: CN213932523U
Application number: CN202120035263.1U
Authority: CN
Inventors: 陈源; 章智伟; 张和君; 冯福荣; 廖学文
Original assignee: Chotest Technology Inc
Current assignee: Chotest Technology Inc
Priority date: 2021-01-07
Filing date: 2021-01-07
Publication date: 2021-08-10
Anticipated expiration: 2031-01-07

Abstract

The utility model provides a rotatory stop gear of laser tracking measurement, including rotating part, spacing groove part and rotating head driving lever part, the rotating part includes the base, has vertical axle, cable and the motor of threading passageway, vertical axle with the base rotates to be connected, the motor with vertical axle connection, drive vertical axle rotates, the cable passes vertical axle's threading passageway, vertical axle with rotating head driving lever part is connected, spacing groove part includes convex spacing groove, slider, left stopper and right spacing piece, the slider sets up the spacing inslot, left stopper, right spacing piece are located respectively the left end point of spacing groove, right end point. The utility model has the advantages that: the unidirectional rotation is ensured to be more than 360 degrees, and the use requirement of no dead angle in tracking measurement is met; simple structure, easy processing and easy assembly.

Description

Laser tracking measurement rotation limiting mechanism

Technical Field

The utility model relates to a laser survey especially relates to a laser tracking measures rotatory stop gear.

Background

In the process of tracking measurement, in order to ensure that the measurement range in the horizontal direction has no dead angle, the laser tracker requires that the arbitrary rotation angle of a vertical shaft is more than 360 degrees, and simultaneously requires that a line passing through the vertical axis cannot be stranded, a mechanical rotation limiting mechanism needs to be added; the device is provided with a rotating shaft, a limiting groove, a sliding block, a limiting block, a deflector rod, a rotating head seat and the like; the shifting rod is arranged on the rotating head seat and is arranged at a 0-degree position, the sliding block and the limiting block are arranged at 0-degree positive and negative positions, the rotating head seat and the shifting rod are driven to rotate together when the rotating shaft rotates, the shifting rod shifts the sliding block to move to the next limiting block position along the circumference of the limiting groove when the rotating shaft rotates clockwise, and the angle is smaller than 360 degrees; and rotating the deflector rod anticlockwise to stir the sliding block to move back to the initial position along the circumference of the limiting groove, wherein the angle is smaller than 720 degrees. This way not only ensures that the tracking measurement requires a rotation of more than 360 degrees, but also prevents the wire passing through the center of rotation from twisting off.

The prior patent 201821780121.2 is similar to the scheme, and is mainly used for manual rotation of the illuminating lamp of the medical equipment to prevent the twisting and breaking of a power line and a signal line which are arranged on a limiting mechanism; an upper limiting groove and a lower limiting groove are arranged, the angles of the upper limiting groove and the lower limiting groove are both smaller than 360 degrees, and the sliding block is arranged in the upper limiting groove and the lower limiting groove, so that the structure is relatively complex, the processing and the assembly are not facilitated, and meanwhile, the unidirectional rotation is not guaranteed to be close to 720 degrees; the multi-turn rotation cannot be realized quickly in special occasions.

The disadvantages of the prior art are as follows:

1. unidirectional rotation is less than 360 degrees.

2. The structure is complicated partially, and two limiting grooves are needed to be arranged up and down.

3. The structure is sealed into a whole, and the assembly is difficult and the maintenance is inconvenient.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides a rotatory stop gear of laser tracking measurement.

The utility model provides a laser tracking measurement rotation limiting mechanism, including rotating part, spacing groove part and rotating head driving lever part, the rotating part includes base, vertical axle that has the threading passageway, cable and motor, vertical axle with the base rotates to be connected, the motor with vertical axle connection drives vertical axle rotates, the cable passes the threading passageway of vertical axle, vertical axle with rotating head driving lever part is connected, spacing groove part includes convex spacing groove, slider, left stopper and right stopper, the slider sets up in the spacing groove, left stopper, right stopper are located respectively the left end point, the right end point of spacing groove, the motor drive vertical axle rotates, drive the rotating head driving lever part rotates, rotating head driving lever part drives the slider is in the spacing inslot removes, the moving position of the sliding block is limited by the left limiting block and the right limiting block.

As a further improvement of the utility model, the limiting groove is installed on the base of the rotating part.

As a further improvement of the utility model, the shape of the limiting groove is a major arc with a gap part.

As a further improvement of the utility model, the midpoint of the gap part of the limit groove is just right to the zero position.

As a further improvement of the present invention, the rotating head driving lever part comprises a rotating head and a driving lever, the rotating head is fixedly connected to the vertical shaft, the driving lever is disposed at the bottom of the rotating head, and when the rotating head drives the driving lever to rotate, the driving lever pushes the slider to move in the limiting groove.

As a further improvement of the present invention, the shift lever and the rotating head are mountable and detachable.

As a further improvement of the present invention, the rotating part further includes a bearing, and the vertical shaft is rotatably connected to the base through the bearing.

As a further improvement of the utility model, the rotating part still includes encoder and encoder calibration frock, encoder and encoder calibration frock are installed respectively vertical epaxial.

As a further improvement, the code encoder calibrating tool is connected with the calibrating device.

As a further improvement of the present invention, the cable passes through the rotating head lever part.

The utility model has the advantages that:

1. the unidirectional rotation is ensured to be more than 360 degrees, and the use requirement of no dead angle in tracking measurement is met.

2. Simple structure, easy processing and easy assembly.

Drawings

Fig. 1 is the overall schematic diagram of the laser tracking measurement rotation limiting mechanism of the present invention.

Fig. 2 is a schematic cross-sectional view of a rotating portion of a laser tracking measurement rotation limiting mechanism according to the present invention.

Fig. 3 is a schematic diagram of a zero position of a rotating portion of the laser tracking measurement rotation limiting mechanism of the present invention.

Fig. 4 is a detailed schematic view of the laser tracking measurement rotation limiting mechanism of the present invention.

Fig. 5 is a partial schematic view of the laser tracking measurement rotation limiting mechanism of the present invention.

Fig. 6 is a schematic diagram of clockwise rotation of the position limiting groove part of the laser tracking measurement rotation limiting mechanism of the present invention.

Fig. 7 is a schematic diagram of the counterclockwise rotation of the position limiting groove part of the laser tracking measurement rotation limiting mechanism of the present invention.

Fig. 8 is a calibration schematic diagram of a laser tracking measurement rotation limiting mechanism of the present invention.

Detailed Description

The present invention will be further described with reference to the following description and embodiments.

As shown in fig. 1 to 8, a laser tracking measurement rotation limiting mechanism mainly includes a rotation portion 10, a limiting groove portion 20, a rotating head rod portion 30; the three parts are finally assembled into a whole, the limiting groove part 20 is assembled on the base of the rotating part 10, and the cut part is opposite to the zero position; the rotary head stem portion 30 is fitted to the rotation axis of the rotating portion 10, and the light path indicating direction is directed toward the null position.

The rotating portion 10 is used for rotational driving and positional accuracy assurance; the device comprises a base 11, a vertical shaft 12, a bearing 13, a motor 14, an encoder 15, a cable 16 and an encoder calibrating tool 17; wherein the motor 14 drives the vertical shaft 12 to rotate forwards and backwards at any angle; the cables pass through the center of the vertical shaft and are connected to the swivel head stem portion 30.

The limiting groove part 20 and the rotating head deflector rod part 30 are used for limiting and controlling the rotating angle; the limiting groove part 20 comprises a limiting groove 21, a sliding block 22, a left limiting block 23 and a right limiting block 24; the limiting groove 21 is provided with a notch, the smaller the notch is, the larger the rotation angle is, the limiting groove 21 is mounted on the base 11 of the rotating part 10, the notch of the limiting groove 21 is aligned with the zero position of the rotating part 10, the sliding block 22 is arranged in the limiting groove 21, and the left limiting block 23 and the right limiting block 24 are respectively arranged at the left side and the right side of the limiting groove 21. A rotating head lever part 30 including a rotating head 31 and a lever 32; the shift lever 32 is arranged on the rotating head 31 and is overlapped when the rotating head 31 points to the zero position of the rotating part 10; when the vertical shaft 11 rotates, the rotating head 31 and the shifting rod 32 are driven to move circularly together, and when the clockwise rotation is started, the shifting rod 31 pushes the sliding block 22 to move to the right limiting block 24 to form a clockwise rotation angle which is smaller than 360 degrees; when the left stopper 23 starts to rotate anticlockwise, the shift lever 31 pushes the slider 22 to move to the left stopper 23 by an anticlockwise rotation angle which is smaller than 360 degrees; the movable angle measuring device can move clockwise and anticlockwise, moves in the opposite direction after moving to the limiting block, is 360 degrees larger than the initial direction in movement angle and smaller than 720 degrees on the whole, and ensures the angle range without dead angles during tracking measurement.

The angle of the encoder 15 of the rotating part 10 is inaccurate, when calibration is needed, a cable 16 joint fixed at the rotating head 31 is pulled out, and meanwhile, the driving rod 32 is detached, and the calibrating device 18 is assembled on the encoder calibrating tool 17, so that the calibration can be realized by multi-turn rotation in the forward and reverse directions, and the calibration is quick, simple and convenient.

The utility model provides a pair of rotatory stop gear of laser tracking measurement compares with prior art, has following advantage:

1. the structure is simpler, the processing and the assembly are easy, and the cost is lower.

2. The unidirectional rotation of more than 360 degrees can be realized, and the laser tracking measurement of 360 degrees can be realized without dead angle.

3. Spacing draw-in groove is jagged, conveniently dismantles the driving lever and realizes the encoder calibration, and specific occasion can make things convenient for many rings of rotations fast, realizes the encoder calibration, guarantees to trail measurement accuracy.

4. The hollow design of the rotating shaft leads the cable to be difficult to twist, and the twisting problem is better avoided.

5. Only a limit groove needs to be arranged, and the structure is simple.

The utility model provides a pair of rotatory stop gear is measured in laser tracking is applicable to the tracker, can be better satisfy the operation requirement of tracker, guarantee to track to measure one-way more than 360 degrees, pass the axial lead simultaneously and not twisted absolutely, when special occasion fast calibration moreover, need many circles of rotatory calibrations to guarantee that the measurement accuracy has guaranteed the measurement accuracy of instrument.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. The utility model provides a laser tracking measures rotatory stop gear which characterized in that: comprises a rotating part, a limiting groove part and a rotating head deflector rod part, wherein the rotating part comprises a base, a vertical shaft with a threading channel, a cable and a motor, the vertical shaft is rotatably connected with the base, the motor is connected with the vertical shaft and drives the vertical shaft to rotate, the cable passes through a threading channel of the vertical shaft, the vertical shaft is connected with the rotating head deflector rod part, the limiting groove part comprises a circular limiting groove, a sliding block, a left limiting block and a right limiting block, the sliding block is arranged in the limiting groove, the left limiting block and the right limiting block are respectively positioned at the left end point and the right end point of the limiting groove, when the rotating head deflector rod part rotates, the rotating head deflector rod part drives the sliding block to move in the limiting groove, the limiting groove is installed on the base of the rotating part, and the limiting groove is an arc with a gap part.

2. The laser tracking measurement rotation-limiting mechanism of claim 1, wherein: the rotating head deflector rod part comprises a rotating head and a deflector rod, the rotating head is fixedly connected with the vertical shaft, the deflector rod is arranged at the bottom of the rotating head, and when the rotating head drives the deflector rod to rotate, the deflector rod pushes the sliding block to move in the limiting groove.

3. The laser tracking measurement rotation-limiting mechanism of claim 1, wherein: the rotating part further comprises an encoder and an encoder calibrating tool, and the encoder calibrating tool are respectively installed on the vertical shaft.

4. The laser tracking measurement rotation-limiting mechanism of claim 3, wherein: the encoder calibration tool is installed at the bottom end of the vertical shaft.

5. The laser tracking measurement rotation-limiting mechanism of claim 4, wherein: the code device calibration tool is connected with a calibration device.