CN113078771B

CN113078771B - Turntable driving assembly

Info

Publication number: CN113078771B
Application number: CN202110341157.0A
Authority: CN
Inventors: 李想; 刘宏旭; 于昊钲; 温庆荣
Original assignee: CETC 11 Research Institute
Current assignee: CETC 11 Research Institute
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2023-01-06
Anticipated expiration: 2041-03-30
Also published as: CN113078771A

Abstract

The invention discloses a rotary table driving assembly, which comprises a motor, a driving support sleeve 102 and a driving shaft 104; the driving bushing 102 comprises a first accommodating cavity for accommodating the motor, and the motor comprises a rotor 1011 and a stator 1012; the rotor 1011 is installed in cooperation with the driving shaft 104; a load mounting plate 3 is mounted on the output end of the rotor 1011; the surface of the first accommodating cavity corresponding to the output end of the rotor 1011 is sealed by a sealing assembly. According to the embodiment of the invention, the installation efficiency of the rotary table is improved through the modularized driving support sleeve, the driving shaft, the motor and the sealing assembly, and meanwhile, the rotary table assembly has the characteristics of simplicity in assembly and adjustment, good interchangeability and the like.

Description

Turntable driving assembly

Technical Field

The invention relates to the technical field of mechanical equipment, in particular to a rotary table driving assembly.

Background

The turntable is a high-precision positioning system, and the application field of the turntable is gradually expanded towards other different military and civil markets along with the continuous increase of market demands. Nowadays, high-precision rotary tables are widely applied to the fields of forest fire prevention, ports, scenic spots and the like.

The shafting drive unit of present servo revolving stage uses motor and bearing to install respectively in the structural style of rotation axis as the main, and this kind of structure volume is great, the modularization degree is low, is difficult for changing the operation when running into outsourcing parts such as torque motor and bearing and damaging, consequently, the demand carries out further improvement to traditional structural style.

Disclosure of Invention

The embodiment of the invention provides a rotary table driving assembly which is used for realizing modularized assembly.

The embodiment of the invention provides a rotary table driving assembly, which comprises a motor, a driving support sleeve and a driving shaft, wherein the driving support sleeve is arranged on the motor;

the driving support sleeve comprises a first accommodating cavity, the first accommodating cavity is used for accommodating the motor, and the motor comprises a rotor and a stator;

the rotor is matched with the driving shaft;

a load mounting plate is mounted on the output end of the rotor;

the first accommodating cavity is sealed through a sealing assembly with the surface corresponding to the output end of the rotor.

In one embodiment, the rotor is installed with the driving shaft by matching a first ball bearing and a second ball bearing;

the output end of the rotor is fixed with the first ball bearing through a driving connecting shaft;

the first surface of the rotor is fixed with the second ball bearing through a bearing pressing ring.

In one embodiment, the seal assembly comprises a seal cap;

the sealing cover is arranged on the periphery of the output end of the rotor and is matched with the opening of the first accommodating cavity to realize sealing.

In one embodiment, a lead-in angle exists between the output end of the rotor and the seal cover;

a first sealing ring is arranged in the leading-in angle and used for sealing the leading-in angle.

In one embodiment, the seal assembly further comprises a dynamic seal subassembly disposed outside the seal lip of the lead-in angle;

the dynamic sealing subassembly is used for sealing the output end of the rotor.

In one embodiment, the dynamic seal subassembly comprises a retainer ring and a retaining ring;

the retaining ring is arranged on the outer side of the sealing lip, the retaining ring is arranged on the retaining ring, and the retaining ring is used for limiting the axial movement of the first sealing ring.

In an embodiment, the sealing cover is provided with a first sealing hole, a second sealing ring is mounted on the first sealing hole, and the second sealing ring is used for realizing sealing between the sealing cover and the driving support sleeve.

In an embodiment, the turret drive assembly further comprises a turret assembly;

the turntable assembly comprises a second accommodating cavity, and the driving support sleeve is installed in the second accommodating cavity.

In an embodiment, a second sealing hole is further disposed on the driving support, and the second sealing hole is used for sealing and assembling the driving support and the turntable assembly.

The embodiment of the invention improves the installation efficiency of the turntable by the modularized driving support sleeve, the driving shaft, the motor and the sealing assembly, and simultaneously has the characteristics of simple assembly and adjustment, good interchangeability and the like.

The above description is only an overview of the technical solutions of the present invention, and the present invention can be implemented in accordance with the content of the description so as to make the technical means of the present invention more clearly understood, and the above and other objects, features, and advantages of the present invention will be more clearly understood.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

FIG. 1 is a schematic structural diagram of a driving unit according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a driving unit according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a turntable driving assembly according to an embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

An embodiment of the present invention provides a turntable driving assembly, as shown in fig. 1, including a motor, a driving support 102 and a driving shaft 104;

the driving bushing 102 includes a first receiving cavity for receiving the motor, which includes a rotor 1011 and a stator 1012;

the rotor 1011 is installed in cooperation with the driving shaft 104;

a load mounting plate 3 is mounted on the output end of the rotor 1011;

the surface of the first accommodating cavity corresponding to the output end of the rotor 1011 is sealed by a sealing assembly.

In this embodiment, as shown in fig. 1, the driving support 102 is used as an installation platform and a positioning reference, a first accommodating cavity is provided in the driving support 102, the first accommodating cavity is of a predetermined structure, and the first accommodating cavity is used for matching with a motor, which may be a torque motor in this embodiment. The motor in this embodiment includes a rotor 1011 and a stator 1012. In the specific installation process, the rotor 1011 and the stator 1012 are fixedly installed with the driving support sleeve 102, so that the stator installation surface is tightly attached to the matching end surface of the driving support sleeve 102. After the fixation is completed, the sealing is further performed by a sealing assembly in this example. According to the embodiment of the invention, the installation efficiency of the rotary table is improved through the modularized driving support sleeve, the driving shaft, the motor and the sealing assembly, and meanwhile, the rotary table assembly has the characteristics of simplicity in assembly and adjustment, good interchangeability and the like.

In one embodiment, the rotor 1011 is mounted in cooperation with the drive shaft 104 via a first ball bearing 1051 and a second ball bearing 1052;

wherein, the output end of the rotor 1011 is fixed with the first ball bearing 1051 through a driving connection shaft 110;

the first surface of the rotor 1011 is fixed to the second ball bearing 1052 by a bearing retainer 103.

As shown in fig. 1 in particular, for the installation of the rotor, in this embodiment, the rotor 1011 is installed in cooperation with the driving shaft 104 through a first ball bearing 1051 and a second ball bearing 1052, and the first ball bearing 1051 and the second ball bearing 1052 may be deep groove ball bearings. The first surface of the rotor 1011 is fixed to the second ball bearing 1052 through the bearing clamping ring 103, and the output end of the rotor 1011 is fixed to the first ball bearing 1051 through the driving connecting shaft 110. The modularized installation platform is designed in the embodiment, the detachability of the platform is greatly improved, and the effect of quick maintenance and replacement is achieved.

In one embodiment, the seal assembly includes a seal cap 106;

the sealing cover 106 is disposed on the periphery of the output end of the rotor 1011 and is matched with the opening of the first accommodating cavity to realize sealing.

The driving support 102 forms an opening of the receiving cavity structure as shown in fig. 1, and after the motor, the driving shaft 104, and the like are mounted, the receiving cavity is sealed by a sealing cover 106 with a corresponding opening in the present embodiment.

In one embodiment, there is a lead-in angle between the output end of the rotor 1011 and the seal cover 106;

a first sealing ring 107 is arranged in the leading-in angle, and the first sealing ring 107 is used for sealing the leading-in angle.

In order to further ensure the sealing performance of the entire turntable driving assembly, the sealing assembly in this embodiment further includes a leading-in angle between the output end of the rotor 1011 and the sealing cover 106, a first sealing ring 107 is disposed in the leading-in angle, the first sealing ring 107 may be a flood plug sealing ring, and the first sealing ring 107 is used for sealing the leading-in angle.

the dynamic seal subassembly is used for sealing the output end of the rotor 1011.

In order to ensure good sealing of the output shaft of the motor, in this embodiment, a dynamic sealing subassembly is further disposed outside the sealing lip of the lead-in angle, so as to achieve the sealing effect of the rotating component.

In one embodiment, the dynamic seal subassembly includes a retaining ring 108 and a retaining ring 109;

the retainer ring 108 is arranged outside the seal lip, the retaining ring 109 is arranged on the retainer ring 108, and the retaining ring 109 is used for limiting the axial movement of the first seal ring 107.

Specifically, the dynamic seal subassembly in this embodiment includes a retainer ring 108 and a retaining ring 109, in this embodiment, the retainer ring 108 is disposed outside the seal lip, the retaining ring 109 is disposed on the retainer ring 108, and the retaining ring 109 is used for limiting the axial movement of the first seal ring 107. Wherein the retaining ring 108 may be a teflon retaining ring and the retaining ring 109 may be a C-shaped retaining ring.

In one embodiment, the sealing cover 106 is provided with a first sealing hole, a second sealing ring 1112 is mounted on the first sealing hole, and the second sealing ring 1112 is used for realizing the sealing between the sealing cover 106 and the driving support 102.

In order to achieve the sealing effect with the first accommodating cavity in this embodiment, the sealing cover 106 is provided with a first sealing hole, the first sealing hole is provided with a second sealing ring 1112, and in this embodiment, the second sealing ring 1112 is used for realizing the sealing between the sealing cover 106 and the driving support 102. The second seal 1112 may be an O-ring seal.

In one embodiment, as shown in fig. 2, an outlet slot 1113 is further formed on the side surface of the driving bushing 102, and the outlet slot 1113 is used for arranging cables of the turntable driving assembly.

In an embodiment, the turntable drive assembly further comprises a turntable assembly 2;

the turret assembly 2 includes a second receiving cavity in which the drive socket 102 is mounted.

In this embodiment, as shown in fig. 3, the turntable driving assembly further includes a turntable assembly 2, the turntable assembly 2 is provided with a second accommodating cavity corresponding to the driving support sleeve 102, and the driving support sleeve 102 can be installed in the second accommodating cavity.

In this embodiment, a second sealing hole is further disposed on the driving support 102, and the second sealing hole is used for sealing and assembling the driving support 102 and the turret assembly 2.

The assembly process of the turntable driving assembly comprises the following steps:

the driving support 102 is used as a mounting platform of the whole driving unit, and is also a positioning reference of the bearing motor driving module. The torque motor is accommodated in the driving support sleeve 102, the driving rotating shaft is driven to rotate to work, a motor stator 1012 and the driving support sleeve 102 are fixedly installed, and the stator installation surface is tightly attached to the matching end face of the driving support sleeve 102.

The inner rings of the first ball bearing 1051 and the second ball bearing 1052 are matched with the driving shaft 104, so that the rotation axis of the bearings is perpendicular to the end surfaces of the two sides of the shaft shoulder of the driving shaft 104. Then, the inner ring of the torque motor rotor 1011 is matched and sleeved with the first ball bearing 1051 and the outer ring of the second ball bearing 1052, the second ball bearing 1052 side is locked through the bearing pressing ring 103, the first ball bearing 1051 at the other end is tightly pressed by the driving connecting shaft 110 and is firmly locked through the bolt, no axial displacement of the bearing is needed after installation, and the assembled assembly is used as a driving module. In different examples, different types of bearings can be selected to change the structural form according to the requirements of the load capacity, the starting friction torque and the like of the system.

The driving module is matched and connected with the driving support sleeve 1-2 through the positioning guide of the driving support sleeve 1-2, and is connected and installed with the driving support sleeve 1-2 through the installation end face of the driving shaft 104, so that the requirement of perpendicularity of an installation face and a rotating shaft is met, the axial size is reduced, and the rigidity of the assembly is improved. The brush holder of the torque motor is installed and the cable is threaded out of the outlet slot 1113 shown in fig. 3.

An O-shaped sealing ring (phi 1.5) 1112 is arranged in a sealing groove of the sealing cover 106, the sealing cover 106 and the driving support sleeve 102 are installed in a matched mode, the first sealing ring 107 is embedded along the leading-in angle, the driving unit is subjected to dynamic sealing treatment, a polytetrafluoroethylene check ring 108 is arranged on the outer side of a sealing lip in a filling mode, and finally the axial movement of the first sealing ring 107 is limited through a hole by a C-shaped retaining ring 109, so that the sealing element is prevented from moving out of a sealing area outwards in the working process of equipment. And finally, an O-shaped sealing ring (phi 2) 1111 is arranged in the sealing groove of the driving support sleeve 102 to be used as a seal during the assembly with the system, so that the whole driving unit is assembled.

The turntable driving assembly has the following advantages:

compact structure and high space utilization rate. In the driving unit, the rotor of the torque motor replaces a bearing support sleeve in the traditional structural form, and the bearing and the motor are arranged in a radial direction, so that the axial length of the whole device is reduced, and the processing difficulty and the processing cost of the whole mechanism are greatly reduced.

The bearing capacity is strong, and the rigidity is good. Because of the nesting and matching mode of the bearing and the torque motor in the driving structure, the rigidity of the whole assembly is improved, so that the stress of the driving shaft is more uniform and reliable when the turntable is in a working state, and the self bearing capacity of the turntable is also improved.

The environmental suitability is good, and the reliability is high. The dynamic sealing treatment is carried out at the interface of the driving unit and the load cabin in the form of the flooding plug sealing ring, the traditional labyrinth structure is replaced, the adaptability of the rotary table in different environments and under different high and low temperature conditions is improved, and the reliability of the equipment is also guaranteed in a strict external environment.

Modular design, simple installation. The invention adopts a modular design idea, designs the driving unit as a modular component with independent mechanical and electrical interfaces, and can realize quick maintenance and replacement.

It should be noted that, in this document, the terms "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 of 8230, and" comprising 8230does not exclude the presence of additional like elements in a process, method, article, or apparatus comprising the element.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A turntable drive assembly comprising a motor, a drive bushing (102) and a drive shaft (104);

the drive support sleeve (102) comprises a first accommodating cavity for accommodating the motor, and the motor comprises a rotor (1011) and a stator (1012);

the rotor (1011) is installed in a matching way with the driving shaft (104);

a load mounting plate (3) is mounted on the output end of the rotor (1011);

the surface of the first accommodating cavity corresponding to the output end of the rotor (1011) is sealed through a sealing assembly;

the rotor (1011) and the driving shaft (104) are installed in a matched mode through a first ball bearing (1051) and a second ball bearing (1052);

wherein the output end of the rotor (1011) is fixed with the first ball bearing (1051) through a driving connecting shaft (110);

the rotor (1011) is fixed with the second ball bearing (1052) through a bearing pressing ring (103).

2. Turntable drive assembly as claimed in claim 1, characterized in that the sealing assembly comprises a sealing cover (106);

the sealing cover (106) is arranged on the periphery of the output end of the rotor (1011) and is matched with the opening of the first accommodating cavity to realize sealing.

3. Turntable drive assembly as claimed in claim 2, characterized in that a lead-in angle exists between the output end of the rotor (1011) and the sealing cover (106);

a first sealing ring (107) is arranged in the leading-in angle, and the first sealing ring (107) is used for sealing the leading-in angle.

4. The turntable drive assembly of claim 3, wherein said seal assembly further includes a dynamic seal subassembly disposed outboard of a seal lip of said lead-in corner;

the dynamic sealing subassembly is used for sealing the output end of the rotor (1011).

5. The turntable drive assembly of claim 4, wherein said dynamic seal subassembly includes a retaining ring (108) and a retaining ring (109);

the retainer ring (108) is arranged on the outer side of the sealing lip, the retaining ring (109) is arranged on the retainer ring (108), and the retaining ring (109) is used for limiting the axial movement of the first sealing ring (107).

6. Turntable drive assembly as claimed in any one of the claims 3-5, characterized in that said sealing cover (106) is provided with a first sealing aperture, on which a second sealing ring (1112) is mounted, said second sealing ring (1112) being adapted to effect a sealing between said sealing cover (106) and said drive leg (102).

7. Turntable drive assembly as claimed in any one of the claims 1-5, characterized in that the turntable drive assembly further comprises a turntable assembly (2);

the turret assembly (2) comprises a second housing cavity in which the drive brace (102) is mounted.

8. Turntable drive assembly as claimed in claim 7, characterized in that said drive boss (102) is further provided with a second sealing aperture for sealing fitting of said drive boss (102) with said turntable assembly (2).