CN216487851U

CN216487851U - Multi-dimensional adjustable laser optical gate system

Info

Publication number: CN216487851U
Application number: CN202122973576.4U
Authority: CN
Inventors: 李启坤; 杨彬; 邓晨
Original assignee: Nanjing Xinhuan Photoelectric Technology Co ltd
Current assignee: Nanjing Xinhuan Photoelectric Technology Co ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-05-10
Anticipated expiration: 2031-11-30

Abstract

The utility model discloses a multi-dimensional adjustable laser optical gate system, which belongs to the technical field of laser optical gates and comprises an optical gate bottom plate, a light barrier and a motor; the center of the optical gate bottom plate is provided with an optical through hole; a motor shaft of the motor is connected with the light barrier and drives the light barrier to rotate horizontally; a round hole is formed in one end, far away from the motor, of the light barrier, and an electromagnet (12) is installed in the round hole; the optical gate bottom plate is provided with a microswitch I, an electromagnetic switch II and a microswitch II; the electromagnetic switch I and the electromagnetic switch II are arranged in the counter bores on the optical gate bottom plate; the motor, the microswitch I, the electromagnetic switch II and the microswitch II are arranged around the light through hole and are sequentially arranged clockwise to form an annular structure; the light barrier is arranged on the light gate bottom plate which is far away from the light through hole and is arranged on the inner side of the annular structure; the electromagnetic switch and the microswitch are used for controlling the stop of the motor, and the safety is higher.

Description

Multi-dimensional adjustable laser optical gate system

Technical Field

The utility model relates to the technical field of laser optical shutters, in particular to a multi-dimensional adjustable laser optical shutter system.

Background

The laser radar detection has the advantages of active detection, strong anti-interference capability, high detection precision, all-day-long work and the like, and is widely applied, laser is used as a medium for laser detection and is transmitted to a target object, the target object generates diffuse reflection, and the reflected laser (including physical information such as amplitude, phase and the like) is received by a detector, so that the information such as the distance, the direction and the like of the target object is obtained, and the three-dimensional detection of the surrounding environment is realized.

The laser shutter is an important module in a laser radar detection receiving system, the laser shutter is a control device for closing and opening a laser transmission light path emitted from a laser resonant cavity, a light through hole, a light barrier and a motor for controlling the movement of the light barrier are usually arranged on a shutter bottom plate of the laser shutter, and the conventional laser shutter may have the condition that the light barrier and the motor rotate without limitation, so that the safety of the whole system cannot be ensured; if the fiber head interface of the laser shutter and the light through hole are not aligned, the receiving efficiency of the radar detection receiving system is also affected.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims to provide a multi-dimensional adjustable laser optical shutter system aiming at the situation that a light blocking plate and a motor in a laser optical shutter in the prior art can rotate without limit.

The technical scheme is as follows: a multi-dimensional adjustable laser optical shutter system comprises an optical shutter bottom plate, an optical barrier and a motor; the center of the optical gate bottom plate is provided with an optical through hole; a motor shaft of the motor is connected with the light barrier and drives the light barrier to rotate horizontally; a round hole is formed in one end, far away from the motor, of the light barrier, and an electromagnet (12) is installed in the round hole; the optical gate bottom plate is also provided with a microswitch I, an electromagnetic switch II and a microswitch II; the electromagnetic switch I and the electromagnetic switch II are arranged in the counter bores on the optical gate bottom plate; the motor, the microswitch I, the electromagnetic switch II and the microswitch II are arranged around the light through hole and are sequentially arranged clockwise to form an annular structure; the light barrier is arranged on the light gate bottom plate which is far away from the light through hole and is arranged on the inner side of the annular structure;

when the light through hole needs to be blocked, the motor drives the light blocking plate to rotate clockwise, the electromagnet rotates to the position above the electromagnetic switch II, and the motor stops running; if the electromagnetic switch II fails, the light barrier continues to rotate until the light barrier touches the micro switch II, and then the motor stops running; when the light through hole needs to be opened, the motor drives the light barrier to rotate anticlockwise, the electromagnet rotates to the position above the electromagnetic switch I, and the motor stops running; if the electromagnetic switch I fails, the light barrier continues to rotate until the micro switch I is touched, and then the motor stops running.

Further, an optical fiber head interface is arranged above the light through hole; the optical fiber head interface is arranged on an adjusting frame, and the adjusting frame is arranged on the optical gate bottom plate through a frame of the adjusting frame; the bottom of the frame of the adjusting frame is arranged on the optical gate bottom plate outside the annular structure through a screw; and the adjusting frame is provided with an X-direction adjusting knob, a Y-direction adjusting knob and a Z-direction adjusting knob for adjusting the position of the optical fiber head interface.

Furthermore, the adjusting frame comprises a first vertical plate and a second vertical plate which are arranged in parallel, the first vertical plate and the second vertical plate are connected through a vertical sliding rail assembly, and the first vertical plate is fixed on the adjusting frame through four screws;

a fixed block with a threaded hole is connected to the side face, facing the second vertical plate, of the upper portion of the first vertical plate, the Z-direction adjusting knob is installed in the threaded hole in a threaded mode, and the lower end of the Z-direction adjusting knob is connected with the upper end of the second vertical plate;

the lower end of the side face, far away from the first vertical plate, of the second vertical plate is provided with a horizontally arranged clamping ring, the inner side of the clamping ring is provided with an annular clamping groove, and the edge of the optical fiber head interface is arranged in the annular clamping groove; a first spring and a second spring are arranged between the edge of the optical fiber head interface and the inner wall of the annular clamping groove; the X-direction adjusting knob and the Y-direction adjusting knob are spirally arranged on two adjacent outer side surfaces which are adjacent to each other and arranged on the clamping ring, and the extending ends of the X-direction adjusting knob and the Y-direction adjusting knob penetrate through the clamping ring and extend into the annular clamping groove to be abutted against the edge of the optical fiber head interface; the first spring and the X-direction adjusting knob are positioned on the same straight line and are positioned at two opposite ends of the optical fiber head interface; the second spring and the Y-direction adjusting knob are positioned on the same straight line and are positioned at two opposite ends of the optical fiber head interface.

Further, the motor is installed on the optical gate bottom plate through a motor support, the motor support is fixed on the optical gate bottom plate through screws, a motor shaft of the motor is perpendicular to the optical gate bottom plate, and the light barrier is fixed on the motor shaft through screws.

Furthermore, the electromagnetic switch I and the electromagnetic switch II are fixedly installed in corresponding counter bores on the optical gate bottom plate through countersunk screws, and the upper side surfaces of the electromagnetic switch I and the electromagnetic switch II are not higher than the upper side surface of the optical gate bottom plate;

the micro switch I and the micro switch II are fixed on the upper side surface of the optical gate bottom plate through screws.

Furthermore, the optical gate bottom plate is provided with a control panel, and the control panel is arranged on the outer side of the annular structure through the control panel bracket.

The optical gate bottom plate is characterized by further comprising an optical gate upper cover, the optical gate upper cover comprises a first cover body and a second cover body which are identical in structure, the lower ends of the first cover body and the second cover body are fixed on the optical gate bottom plate through screws, semicircular notches are formed in the centers of the upper side faces of the first cover body and the second cover body, and the two semicircular notches are spliced to form an optical fiber inlet.

Has the advantages that:

(1) the utility model uses the electromagnetic switch and the microswitch to control the stop rotation of the motor and the light barrier, and the safety of the optical gate system is higher;

the electromagnetic switch is used for identifying the position of the light barrier, so that the interference of laser signals can be avoided; meanwhile, the electromagnetic switch can identify the position of the light barrier in a non-contact induction mode, so that impact caused by hard contact between the light barrier and the switch can be prevented, and loosening and failure of the switch structure are reduced. The microswitch can replace the function of the electromagnetic switch under the condition that the electromagnetic switch is invalid, and can be used as a prevention protection device to control the stop of the motor and the light barrier, thereby ensuring the safety of the whole system.

(2) The position of the optical fiber head interface can be adjusted in three degrees of freedom XYZ by the arrangement of the adjusting frame, the alignment degree of the optical fiber head interface and the light through port is improved, and the efficiency of the whole receiving system is improved.

(3) The optical gate system design has the optical gate upper shield, and the optical gate upper shield divide into 2 parts, installs the optical gate bottom plate respectively with first cover body and second cover body under the good condition of optic fibre installation on, satisfying under system safety protection and the pleasing to the eye condition, it is more convenient that installation and later stage change debugging, need not adorn light path system again, promotes the installation maintenance manufacturability of system by a wide margin.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic perspective view of the shutter with the upper cover removed in accordance with the present invention;

FIG. 3 is a left side view of the shutter with the upper cover removed in accordance with the present invention;

FIG. 4 is a schematic diagram showing the positional relationship among a microswitch I, an electromagnetic switch II and a microswitch II according to the present invention.

Reference numbers in the figures: an optical gate bottom plate-1; a light through hole-101; an optical shutter upper cover-2; a motor bracket-3; a motor-4; an adjusting bracket-5; an adjusting frame-8; z direction adjusting knob-801; an X-direction adjusting knob-802 and a Y-direction adjusting knob-803; fiber optic head interface-804; a first riser-805; a second riser-806; a snap ring-807; microswitch-I9; a light barrier-10; an electromagnetic switch I-11; an electromagnet-12; an electromagnetic switch II-13; and a microswitch II-14.

Detailed Description

The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.

As shown in fig. 1-4, a multi-dimensional adjustable laser shutter system includes a shutter base plate 1, a light barrier 10 and a motor 4; a light through hole 101 is formed in the center of the shutter bottom plate 1; the optical gate bottom plate 1 is also provided with a microswitch I9, an electromagnetic switch I11, an electromagnetic switch II13 and a microswitch II 14;

the motor 4 is installed on the optical gate bottom plate 1 through a motor support 3, the motor support 3 is fixed on the optical gate bottom plate 1 through screws, a motor shaft of the motor 4 is perpendicular to the optical gate bottom plate 1, and the light barrier 10 is fixed on the motor shaft through screws.

A motor shaft of the motor 4 drives the light barrier 10 to horizontally rotate; a round hole is formed in one end, far away from the motor 4, of the light barrier 10, and an electromagnet 12 is installed in the round hole; the electromagnet 12 is stuck in the round hole by using adhesive;

the motor 4, the microswitch I9, the electromagnetic switch I11, the electromagnetic switch II13 and the microswitch II14 are arranged around the light through hole 101 and are sequentially arranged clockwise to form an annular structure; the light barrier 10 is placed on the shutter bottom plate 1 which is far away from the light through hole 101 and is arranged on the inner side of the annular structure; the electromagnetic switches I11 and II13 are fixedly installed in corresponding counter bores on the shutter bottom plate 1 through countersunk screws, and the upper side surfaces of the electromagnetic switches I11 and II13 are not higher than the upper side surface of the shutter bottom plate 1; the micro switch I9 and the micro switch II14 are fixed on the upper side surface of the shutter base plate 1 through screws.

When the light through hole 101 needs to be blocked, the motor 4 drives the light barrier 10 to rotate clockwise, the electromagnet 12 rotates to the position above the electromagnetic switch II13, and the motor 4 stops operating; if the electromagnetic switch II13 fails, the light barrier 10 continues to rotate until the light barrier touches the micro switch II14, and then the motor 4 stops running;

when the light through hole 101 needs to be opened, the motor 4 drives the light barrier 10 to rotate counterclockwise, the electromagnet 12 rotates to the position above the electromagnetic switch I11, and the motor 4 stops operating; if the electromagnetic switch I11 fails, the light barrier 10 continues to rotate until it touches the micro switch I9, and the motor 4 stops operating.

A fiber head interface 804 is arranged above the light through hole 101; the optical fiber head interface 804 is mounted on an adjusting frame 8, and the adjusting frame 8 is mounted on the optical shutter bottom plate 1 through a frame 5 of the adjusting frame; the bottom of the frame 5 of the adjusting frame is arranged on the optical gate bottom plate 1 outside the annular structure through screws; an X-direction adjusting knob 802, a Y-direction adjusting knob 803 and a Z-direction adjusting knob 801 for adjusting the position of the optical fiber head interface 804 are arranged on the adjusting frame 8.

The adjusting frame 8 comprises a first vertical plate 805 and a second vertical plate 806 which are arranged in parallel, the first vertical plate 805 and the second vertical plate 806 are connected through a vertical sliding rail assembly, and the first vertical plate 805 is fixed on the frame 5 of the adjusting frame through four screws;

a fixing block with a threaded hole is connected to the side surface of the upper portion of the first vertical plate 805 facing the second vertical plate, the Z-direction adjusting knob 801 is installed in the threaded hole in a threaded manner, and the lower end of the Z-direction adjusting knob 801 is connected with the upper end of the second vertical plate 806;

a horizontally arranged clamping ring 807 is arranged at the lower end of the side surface of the second vertical plate 806 far away from the first vertical plate 805, an annular clamping groove is arranged on the inner side of the clamping ring 807, and the edge of the optical fiber connector 804 is arranged in the annular clamping groove; a first spring and a second spring are arranged between the edge of the optical fiber head interface 804 and the inner wall of the annular clamping groove; the X-direction adjusting knob 802 and the Y-direction adjusting knob 803 are spirally mounted on two adjacent outer side surfaces of the clamping ring, and an extending end of the X-direction adjusting knob and the Y-direction adjusting knob passes through the clamping ring and extends into the annular clamping groove to be abutted against the edge of the optical fiber head interface 804; the first spring and the X-direction adjusting knob 802 are on the same straight line and located at two opposite ends of the fiber optic head interface 804; the second spring and the Y-direction adjusting knob 803 are on the same straight line and located at two opposite ends of the fiber head interface 804.

The optical gate bottom plate 1 is provided with a control panel 6, and the control panel 6 is arranged on the outer side of the annular structure through the control panel bracket 7.

The optical gate further comprises an optical gate upper cover 2, wherein the optical gate upper cover 2 comprises a first cover body and a second cover body which are identical in structure, the lower ends of the first cover body and the second cover body are fixed on the optical gate bottom plate 1 through screws, semicircular notches are formed in the centers of the upper side surfaces of the first cover body and the second cover body, and the semicircular notches are spliced to form an optical fiber inlet.

The working principle of the utility model is as follows:

firstly, the light-through hole needs to be shielded when the received signal is closed.

When the light through hole (101) needs to be blocked, a control system sends a clockwise rotation signal, the motor (4) rotates clockwise to drive the light barrier (10) to rotate clockwise, the electromagnet (12) rotates to the position above the electromagnetic switch II (13) to trigger the electromagnetic switch II (13) to generate a stall signal and feed the stall signal back to the control system, the control system sends an instruction to the motor (4) to stall the motor (4), and at the moment, the light barrier (10) completely blocks the light through hole (101) to realize the closing of a received signal;

when the electromagnetic switch II (13) fails, the light barrier (10) continuously rotates clockwise beyond the electromagnetic switch II (13) until the light barrier (10) touches the micro switch II (14), the micro switch II (14) can generate a stalling trigger signal, a control system sends an instruction to the motor (4) to stall the motor (4), and at the moment, the light barrier (10) still completely blocks the light through hole (101), and the closing of the received signal can still be realized.

And secondly, opening the received signal and opening the light through hole.

When the light through hole (101) needs to be opened, the control system sends an anticlockwise rotation signal, the motor (4) rotates anticlockwise and drives the light barrier (10) to rotate anticlockwise, the electromagnet 12 on the light barrier (10) rotates to the position above the electromagnetic switch I (11) to trigger the electromagnetic switch I (11) to generate a stall signal and feed the stall signal back to the control system, the control system sends an instruction to the motor (4) to stall the motor (4), and the light through hole (101) is not blocked at the moment and is in a completely opened state, so that the opening of a received signal is realized;

when the electromagnetic switch I (11) fails, the light barrier (10) passes over the electromagnetic switch I (11) and continues to rotate anticlockwise until the light barrier (10) touches the micro switch I (9), the micro switch I (9) can generate a stalling trigger signal, the control system sends an instruction to the motor (4) to stall the motor (4), at the moment, the light barrier (10) cannot shield the light through hole (101), and the opening of the received signal can still be realized.

As noted above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. The multi-dimensional adjustable laser optical shutter system is characterized by comprising an optical shutter bottom plate (1), an optical barrier (10) and a motor (4); a light through hole (101) is formed in the center of the optical shutter bottom plate (1); a motor shaft of the motor (4) is connected with the light barrier (10) and drives the light barrier (10) to rotate horizontally; a round hole is formed in one end, far away from the motor (4), of the light barrier (10), and an electromagnet (12) is installed in the round hole;

the optical gate bottom plate (1) is also provided with a microswitch I (9), an electromagnetic switch I (11), an electromagnetic switch II (13) and a microswitch II (14); the electromagnetic switch I (11) and the electromagnetic switch II (13) are arranged in the counter bores on the optical gate bottom plate (1); the motor (4), the microswitch I (9), the electromagnetic switch I (11), the electromagnetic switch II (13) and the microswitch II (14) are arranged around the light through hole (101) and are sequentially arranged clockwise to form an annular structure; the light barrier (10) is placed on the light gate bottom plate (1) which is far away from the light through hole (101) and is arranged on the inner side of the annular structure;

when the light through hole (101) needs to be blocked, the motor (4) drives the light barrier (10) to rotate clockwise, the electromagnet (12) rotates to the position above the electromagnetic switch II (13), and the motor (4) stops running; if the electromagnetic switch II (13) fails, the light barrier (10) continues to rotate until the microswitch II (14) is touched, and then the motor (4) stops running; when the light through hole (101) needs to be opened, the motor (4) drives the light barrier (10) to rotate anticlockwise, the electromagnet (12) rotates to the position above the electromagnetic switch I (11), and the motor (4) stops running; if the electromagnetic switch I (11) fails, the light barrier (10) continues to rotate until the light barrier touches the micro switch I (9), and then the motor (4) stops running.

2. A multi-dimensional adjustable laser shutter system according to claim 1 wherein a fiber head interface (804) is provided above the light passing hole (101); the optical fiber head interface (804) is arranged on an adjusting frame (8), and the adjusting frame (8) is arranged on the optical gate bottom plate (1) through a frame (5) of the adjusting frame; the bottom of the frame (5) of the adjusting frame is arranged on the optical gate bottom plate (1) outside the annular structure through screws; and an X-direction adjusting knob (802), a Y-direction adjusting knob (803) and a Z-direction adjusting knob (801) which are used for adjusting the position of the optical fiber head interface (804) are arranged on the adjusting frame (8).

3. The multi-dimensional adjustable laser shutter system according to claim 2, wherein the adjusting frame (8) comprises a first vertical plate (805) and a second vertical plate (806) which are arranged in parallel, the first vertical plate (805) and the second vertical plate (806) are connected by a vertical sliding rail assembly, and the first vertical plate (805) is fixed on the frame (5) of the adjusting frame by four screws;

a fixing block with a threaded hole is connected to the side face, facing the second vertical plate, of the upper portion of the first vertical plate (805), a Z-direction adjusting knob (801) is installed in the threaded hole in a threaded mode, and the lower end of the Z-direction adjusting knob (801) is connected with the upper end of the second vertical plate (806);

a horizontally arranged clamping ring (807) is arranged at the lower end of the side surface of the second vertical plate (806) far away from the first vertical plate (805), an annular clamping groove is formed in the inner side of the clamping ring (807), and the edge of the optical fiber head interface (804) is arranged in the annular clamping groove; a first spring and a second spring are arranged between the edge of the optical fiber head interface (804) and the inner wall of the annular clamping groove; the X-direction adjusting knob (802) and the Y-direction adjusting knob (803) are spirally arranged on two adjacent outer side surfaces adjacent to each other of the clamping ring, and the extending ends of the X-direction adjusting knob and the Y-direction adjusting knob penetrate through the clamping ring and extend into the annular clamping groove to be abutted against the edge of the optical fiber head interface (804); the first spring and the X-direction adjusting knob (802) are positioned on the same straight line and at two opposite ends of the optical fiber head interface (804); the second spring and the Y-direction adjusting knob (803) are positioned on the same straight line and at two opposite ends of the optical fiber head interface (804).

4. The multi-dimensional adjustable laser optical shutter system according to claim 1, wherein the motor (4) is mounted on the optical shutter base plate (1) through a motor bracket (3), the motor bracket (3) is fixed on the optical shutter base plate (1) through screws, a motor shaft of the motor (4) is perpendicular to the optical shutter base plate (1), and the optical barrier (10) is fixed on the motor shaft through screws.

5. The multidimensional adjustable laser optical shutter system according to claim 1, wherein the electromagnetic switches I (11) and II (13) are fixedly installed in corresponding counter bores on the optical shutter base plate (1) through countersunk screws, and the upper side faces of the electromagnetic switches I (11) and II (13) are not higher than the upper side face of the optical shutter base plate (1);

the microswitch I (9) and the microswitch II (14) are fixed on the upper side surface of the optical gate bottom plate (1) through screws.

6. A multi-dimensional adjustable laser shutter system according to claim 1, wherein the shutter base plate (1) is provided with a control board (6), and the control board (6) is mounted outside the ring structure through the control board bracket (7).

7. The multi-dimensional adjustable laser optical shutter system according to claim 6, further comprising an optical shutter upper cover (2), wherein the optical shutter upper cover (2) comprises a first cover body and a second cover body which have the same structure, the lower ends of the first cover body and the second cover body are fixed on the optical shutter base plate (1) through screws, the centers of the upper side surfaces of the first cover body and the second cover body are provided with semicircular notches, and the semicircular notches are spliced to form an optical fiber inlet.