CN215986478U

CN215986478U - Pitching linkage mechanism applied to infrared radar scanning

Info

Publication number: CN215986478U
Application number: CN202121894238.5U
Authority: CN
Inventors: 仇帅辉; 徐守光; 刘洋
Original assignee: Harbin Xinguang Photoelectric Technology Co ltd
Current assignee: Harbin Xinguang Photoelectric Technology Co ltd
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2022-03-08
Anticipated expiration: 2031-08-13

Abstract

The utility model relates to a pitching linkage mechanism applied to infrared radar scanning, belongs to the field of holder pitching mechanisms, and is used for solving the defect that a driving mode in the prior art can generate electromagnetic interference on image acquisition equipment. The pitch linkage mechanism comprises: a holder; the swing mirror is arranged above the holder; and the pitching mechanism is used for controlling the swing mirror to perform pitching motion. The pitch mechanism does not use conductive slip rings. The pitching mechanism comprises a rotating shaft, a connecting rod sliding block, a rotating sliding ring, a guide connecting rod, a T-shaped screw rod sliding block, a shifting fork and a pitching servo motor; when the shifting fork moves up and down, the guide connecting rod is driven to slide up and down along the sliding grooves on the two sides of the light cylinder, the first rotary sliding ring is installed on the guide connecting rod, the first rotary sliding ring is arranged on the second rotary sliding ring, and the up-and-down reciprocating motion of the second rotary sliding ring is converted into the circular motion of the rotary shaft in a winding mode so as to achieve the pitching motion of the swing mirror. The utility model is suitable for the high-point monitoring cradle head.

Description

Pitching linkage mechanism applied to infrared radar scanning

Technical Field

The utility model relates to the field of a tripod head pitching mechanism, in particular to a pitching linkage mechanism applied to infrared radar scanning.

Background

In recent years, the tripod head driving technology has been developed rapidly, and the driving modes commonly used for tripod head pitching mainly include two structural modes, namely a direct-drive type and a motor reducer driving type. The pitching mechanism in the above mode can generate electromagnetic interference on the image acquisition equipment, cause unstable imaging, and increase anti-interference setting inside the image acquisition equipment, which is not beneficial to equipment miniaturization. And also has an influence on the detection accuracy.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to solve the problem of the driving method of the prior art that generates electromagnetic interference to the image acquisition device.

According to a first aspect of the utility model, a pitching linkage mechanism applied to infrared radar scanning is provided, which is characterized by comprising a holder; the swing mirror is arranged above the holder; and the pitching mechanism is used for controlling the swing mirror to perform pitching motion.

Preferably, the pitch mechanism does not use a conductive slip ring.

Preferably, the pitching mechanism comprises a rotating shaft, a connecting rod sliding block, a rotating sliding ring, a guide connecting rod, a T-shaped screw rod sliding block, a shifting fork and a pitching servo motor; wherein the rotating shaft is connected with the swing mirror; the pitching servo motor drives the shifting fork to move up and down along the vertical direction through the T-shaped screw rod sliding block, when the shifting fork moves up and down, the connecting pin drives the guide connecting rod to slide up and down along the sliding grooves on the two sides of the light cylinder, the first rotary sliding ring is arranged on the guide connecting rod, the first rotary sliding ring is arranged on the second rotary sliding ring, when the first rotary sliding ring moves downwards, the second rotary sliding ring is pressed to move downwards, and when the first rotary sliding ring moves upwards, the second rotary sliding ring moves upwards along with the first rotary sliding ring under the action of a pre-tightening force; the second rotary sliding ring can move along with the up-and-down movement of the first rotary sliding ring, and a connecting rod sliding block is arranged on the second rotary sliding ring to convert the up-and-down reciprocating motion of the second rotary sliding ring into circular motion around the rotary shaft so as to realize the pitching motion of the swing mirror.

Preferably, the pitching linkage mechanism further comprises a non-return swinging spring, one end of the non-return swinging spring is fixed on the outer shell, and the other end of the non-return swinging spring is fixed on the swinging mirror and is added with pretightening force.

The utility model has the technical effect of saving the space at the upper end of the holder. The load weight at the upper end of the holder is reduced. The electric equipment around the upper end load is reduced, and the electromagnetic interference is reduced. And the conductive slip ring is eliminated, so that the upper end of the holder only comprises a mechanical mechanism. And because the upper end structure of the holder is designed as an integration, the consistency of the environmental adaptability is better.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.

FIG. 1 is a general block diagram of one embodiment of the present invention;

FIG. 2 is a view showing the structure of the lower part of the head according to an embodiment of the present invention;

fig. 3 is a diagram illustrating the positional relationship of the first rotating slip ring and the second rotating slip ring in accordance with an embodiment of the present invention.

Fig. 4 is a structural diagram of components at the upper end of the holder according to one embodiment of the utility model.

Description of reference numerals:

1-rotating shaft 2-connecting rod slide block

3-first rotary slip ring 4-second rotary slip ring

5-guide connecting rod 6-T type screw slider

7-shifting fork 8-pitching servo motor

9-detector 10-rotary servo motor

11-non-return pendulum spring 12-pendulum mirror

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

The utility model provides a pitching linkage mechanism applied to infrared radar scanning, as shown in fig. 1 to 4, comprising: a holder; a swing mirror 12 disposed above the pan/tilt head; and a pitching mechanism for controlling the swing mirror 12 to perform a pitching motion. Wherein the pitch mechanism does not use conductive slip rings. The pitching mechanism comprises a rotating shaft, a connecting rod sliding block, a rotating sliding ring, a guide connecting rod, a T-shaped screw rod sliding block, a shifting fork and a pitching servo motor, wherein the rotating shaft 1 is connected with the swing mirror 12; the pitching servo motor 8 drives a shifting fork 7 to move up and down along the vertical direction through a T-shaped screw rod sliding block 6, when the shifting fork 7 moves up and down, a guide connecting rod 5 is driven to slide up and down along sliding grooves on two sides of a light cylinder through a connecting pin, a first rotary sliding ring 3 is installed on the guide connecting rod 5, the first rotary sliding ring 3 is arranged on a second rotary sliding ring 4, when the first rotary sliding ring 3 moves down, the second rotary sliding ring 4 is pressed to move down, and when the first rotary sliding ring 3 moves up, the second rotary sliding ring 4 moves up along with the first rotary sliding ring 3 under the action of a pre-tightening force; the second rotary slip ring 4 can move along with the up-and-down movement of the first rotary slip ring 3, and the connecting rod sliding block 2 is arranged on the second rotary slip ring 4, so that the up-and-down reciprocating movement of the second rotary slip ring 4 is converted into the circular movement around the rotary shaft 1, and the pitching movement of the swing mirror 12 is realized. The principle of the connecting rod sliding block 2 for controlling the pitching motion is the same as that of the crank sliding block in the prior art.

The utility model also comprises a non-return pendulum spring 11, wherein one end of the non-return pendulum spring 11 is fixed on the outer shell of the cloud deck, and the other end is fixed on the pendulum mirror 12 and is added with pretightening force.

The pitching mechanism is characterized in that electric driving parts (namely a pitching servo motor and a rotary servo motor) are arranged below the tripod head, and parts arranged above the tripod head are all mechanical parts without electric parts. The emphasis on enabling the whole mechanism to be free of conductive slip rings lies in the first rotary slip ring 3 and the second rotary slip ring 4: the second rotary slide ring 4 is initially biased with a preload force, which tends to move the second rotary slide ring 4 upward, but is not actually moved due to the blocking of the first rotary slide ring 3; when the shifting fork 7 moves upwards, the pretightening force enables the second rotary sliding ring 4 to move upwards along with the first rotary sliding ring 3, and then the swing mirror 12 is driven to perform pitching motion in one direction; and when the shifting fork 7 moves downwards, the first rotary sliding ring 3 presses the second rotary sliding ring 4 downwards, so that the swing mirror 12 generates pitching motion in the other direction. Namely, the pitching mechanism converts the up-and-down motion of the second rotary slip ring 4 into the circular motion of the swing mirror 12, so as to replace the scheme of using a conductive slip ring in the prior art.

The utility model can be applied to high-point monitoring cloud deck or infrared radar scanning and other scenes which need pitching motion, can be used for loading an infrared camera or a visible light camera, and replaces the traditional form of direct drive of a stepping motor or worm and gear drive of a servo reducer. The system can drive the optical load to perform pitching motion, and realizes the functions of scanning, monitoring, tracking and the like of the optical load. When the device is used, the holder rotates in azimuth through the rotary servo motor 10, and the tilting mirror is controlled to rotate in pitch through the pitch servo motor 8, so that the detector 9 can receive image information in a large range. Compared with the prior art, the utility model has the main improvement that the oscillating mirror driving part does not use a conductive sliding ring, but converts the up-and-down reciprocating motion of the second rotary sliding ring of a pure mechanical part into the circular motion of the oscillating mirror, so that the electromagnetic influence of the conductive sliding ring on the detector 9 can be effectively reduced. And the part above the holder is all mechanical parts and does not contain electric parts, thereby providing a new design idea for the prior art.

Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims

1. A pitching linkage mechanism applied to infrared radar scanning is characterized by comprising

A holder; the swing mirror is arranged above the holder; the pitching mechanism is used for controlling the swing mirror to perform pitching motion; the pitching mechanism comprises a rotating shaft, a connecting rod sliding block, a rotating sliding ring, a guide connecting rod, a T-shaped screw rod sliding block, a shifting fork and a pitching servo motor; wherein

The rotating shaft is connected with the swing mirror; the pitching servo motor drives the shifting fork to move up and down along the vertical direction through the T-shaped screw rod sliding block, when the shifting fork moves up and down, the connecting pin drives the guide connecting rod to slide up and down along the sliding grooves on the two sides of the light cylinder, the first rotary sliding ring is arranged on the guide connecting rod, the first rotary sliding ring is arranged on the second rotary sliding ring, when the first rotary sliding ring moves downwards, the second rotary sliding ring is pressed to move downwards, and when the first rotary sliding ring moves upwards, the second rotary sliding ring moves upwards along with the first rotary sliding ring under the action of a pre-tightening force;

the second rotary sliding ring can move along with the up-and-down movement of the first rotary sliding ring, and a connecting rod sliding block is arranged on the second rotary sliding ring to convert the up-and-down reciprocating motion of the second rotary sliding ring into circular motion around the rotary shaft so as to realize the pitching motion of the swing mirror.

2. The pitch linkage mechanism applied to infrared radar scanning as set forth in claim 1, further comprising a non-return pendulum spring, wherein one end of the non-return pendulum spring is fixed on the outer housing, and the other end of the non-return pendulum spring is fixed on the pendulum mirror and applies a pre-tightening force.