Pitching driving module of photoelectric rotary table

Abstract

The invention belongs to the technical field of photoelectric monitoring, and particularly relates to a photoelectric rotary table pitching driving module which comprises a stepped shaft arranged at one end of a pitching rotating shaft of a photoelectric rotary table, and the diameters of steps of the stepped shaft are sequentially decreased from the inner end to the outer end; the stepped shaft is installed in the bearing seat, and an oil seal, a deep groove ball bearing and a pressing ring are sequentially arranged between the stepped shaft and the bearing seat from the inner end to the outer end. The bearing seat is fixedly connected with a motor stator, a motor rotor is arranged in the motor stator, and the motor rotor is installed on the stepped shaft through a rotor installation seat. According to the photoelectric turntable pitching driving module, modular design is carried out, assembling, maintaining and disassembling are convenient, meanwhile, a step labyrinth seal and oil seal contact sealing combination is used, and the water-proof, salt-resistant and sand-proof capacity of the photoelectric turntable pitching driving module is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of photoelectric monitoring, and in particular relates to a photoelectric turntable pitch drive module. Background Art

[0002] With the advancement and development of optoelectronic detection technology and equipment, optoelectronic turntables play an increasingly important role in national defense and civilian fields, and their applications are becoming more and more extensive, such as border monitoring, shipborne monitoring, urban air defense, and forest fire prevention.

[0003] The pitch drive system is generally located at the rotating part of the pitch assembly of the electric turntable, and is used to drive the photoelectric sensor assembly to pitch and rotate. The existing pitch drive system is difficult to install, disassemble and repair, and the cost is high. At the same time, the failure rate is high in areas such as sea and desert, and the ability to withstand harsh environments is poor. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides an optoelectronic turntable pitch drive module. By modularizing the pitch drive, it is not only easy to assemble, but also easy to maintain and disassemble. At the same time, a combination of stepped labyrinth seal and oil seal contact seal is used to improve its waterproof, salt-proof and sand-proof capabilities.

[0005] Specifically, the present invention provides the following technical solutions:

[0006] A photoelectric turntable pitch drive module comprises a stepped shaft arranged at one end of the pitch rotation axis of the photoelectric turntable, wherein the diameter of the steps of the stepped shaft decreases from the inner end to the outer end;

[0007] The stepped shaft is installed in the bearing seat, and an oil seal, a deep groove ball bearing and a pressure ring are arranged in sequence from the inner end to the outer end between the stepped shaft and the bearing seat;

[0008] The bearing seat is fixedly connected with a motor stator, the motor stator is provided with a motor rotor, and the motor rotor is mounted on the stepped shaft through a rotor mounting seat.

[0009] Preferably, the pressure ring is installed on the bearing seat to press the outer ring of the deep groove ball bearing;

[0010] The rotor mounting seat presses the inner ring of the deep groove ball bearing, and a gap is provided between the pressing ring and the rotor mounting seat.

[0011] Preferably, there are two deep groove ball bearings installed in the bearing holes of the bearing seat.

[0012] Preferably, the stepped shaft is made of stainless steel, and the bearing seat is made of aluminum alloy. Studies have shown that salt deposits are easily accumulated in humid coastal areas. If the stepped shaft and the bearing seat are made of materials with the same hardness, adhesion is likely to occur, resulting in failure of the labyrinth seal. The present invention preferably uses the above materials for the stepped shaft and the bearing seat. The stepped shaft is stronger than the bearing seat, and the salt deposits are easily worn off, and adhesion is not likely to occur.

[0013] Preferably, the motor stator is a brushless torque motor stator; and the motor rotor is a brushless torque motor rotor.

[0014] Beneficial effects achieved by the present invention:

[0015] (1) The optoelectronic turntable pitch drive module provided by the present invention makes reasonable use of the structural space and modularizes the pitch drive system, which is convenient for assembly and disassembly and maintenance of components and has a wide range of applications in military and civilian fields;

[0016] (2) The pitch drive module of the optoelectronic turntable provided by the present invention, the pitch axis, the bearing seat and the like are combined to form a stepped labyrinth seal, which can prevent the entry of water such as waves and rainstorms, and can also prevent the entry of relatively large sand particles; at the same time, the oil seal forms a second contact seal, further improving its environmental resistance to salt, rainstorm and sandstorm, and can adapt to harsh environments such as border defense and deserts;

[0017] (3) The optoelectronic turntable pitch drive module provided by the present invention saves axial length space by embedding the bearing into the interior of the motor, while shortening the motor shaft, thereby achieving a compact and lightweight structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the photoelectric turntable; among them, the photoelectric sensor component 01, the pitch component 02, and the azimuth component 03.

[0019] Figure 2 It is a cross-sectional view of the pitch drive module; among them, the bearing seat 1, the brushless torque motor stator 2, the brushless torque motor rotor 3, the outer pressure ring 4, the deep groove ball bearing 5, the oil seal 6, the stepped shaft 7, and the rotor mounting seat 8.

[0020] Figure 3 The front view (left) and rear view (right) of the bearing seat.

[0021] Figure 4 and Figure 5 A schematic diagram of the bearing seat.

[0022] Figure 6 This is a cross-sectional view of a stepped shaft.

[0023] Figure 7 and Figure 8Schematic diagram of a stepped shaft.

[0024] Fig. 9 The front view (upper left), AA cross-section view (upper right) and BB cross-section view (lower left) of the pitch drive module.

[0025] Fig.10 and Fig.11 This is a schematic diagram of the pitch drive module. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0027] like Figure 1 As shown, the photoelectric turntable provided in the embodiment of the present invention includes a photoelectric sensor assembly 01, a pitch assembly 02 and an azimuth assembly 03; the pitch assembly 02 is installed on the azimuth assembly 03 and can rotate around the azimuth rotation axis, and the photoelectric sensor assembly 01 is installed in the pitch assembly 02 and can rotate around the pitch rotation axis; the pitch driving module is located at one end of the pitch rotation axis, and is used to drive the photoelectric sensor assembly to perform pitch rotation;

[0028] like Figure 2-Figure 11 As shown, the pitch driving module includes a stepped shaft 7 arranged at one end of the pitch rotation axis of the photoelectric turntable (that is, one end of the pitch rotation axis is set as a stepped shaft), and the diameter of the steps of the stepped shaft 7 decreases from the inner end to the outer end;

[0029] The stepped shaft 7 is installed in the bearing seat 1, and an oil seal 6, a deep groove ball bearing 5 and an outer pressure ring 4 are coaxially arranged between the stepped shaft 7 and the bearing seat 1 from the inner end to the outer end;

[0030] A brushless torque motor stator 2 is coaxially mounted on the bearing seat 1, a brushless torque motor rotor 3 is disposed inside the brushless torque motor stator 2, and the brushless torque motor rotor 3 is coaxially mounted on the stepped shaft 7 through a rotor mounting seat 8;

[0031] The outer pressure ring 4 is installed on the bearing seat 1 to press the outer ring of the deep groove ball bearing 5;

[0032] The rotor mounting seat 8 is coaxially mounted on the stepped shaft 7 and presses the inner ring of the deep groove ball bearing 5, and a gap is provided between the outer pressure ring 4 and the rotor mounting seat 8;

[0033] There are two deep groove ball bearings 5 ​​installed in the bearing holes of the bearing seat 1;

[0034] The stepped shaft 7 is made of stainless steel, and the bearing seat 1 is made of aluminum alloy.

[0035] Although the present invention has been described in detail above by general description, specific implementation methods and experiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A photoelectric turntable pitch drive module, characterized in that: It comprises a stepped shaft arranged at one end of the pitch rotation axis of the photoelectric turntable, wherein the diameter of the steps of the stepped shaft decreases from the inner end to the outer end; The stepped shaft is installed in the bearing seat, and an oil seal, a deep groove ball bearing and a pressure ring are arranged in sequence from the inner end to the outer end between the stepped shaft and the bearing seat; The bearing seat is fixedly connected with a motor stator, the motor stator is provided with a motor rotor, and the motor rotor is mounted on the stepped shaft through a rotor mounting seat.

2. The optoelectronic turntable pitch drive module according to claim 1, characterized in that: The pressure ring is installed on the bearing seat to press the outer ring of the deep groove ball bearing; The rotor mounting seat presses the inner ring of the deep groove ball bearing, and a gap is provided between the pressing ring and the rotor mounting seat.

3. The optoelectronic turntable pitch drive module according to claim 1 or 2, characterized in that: There are two deep groove ball bearings installed in the bearing holes of the bearing seat.

4. The optoelectronic turntable pitch drive module according to claim 1 or 2, characterized in that: The stepped shaft is made of stainless steel, and the bearing seat is made of aluminum alloy.

5. The optoelectronic turntable pitch drive module according to claim 1 or 2, characterized in that: The motor stator is a brushless torque motor stator; the motor rotor is a brushless torque motor rotor.

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