CN112018948B - Accurate automatic locking mechanism of direct current torque motor - Google Patents
Accurate automatic locking mechanism of direct current torque motor Download PDFInfo
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- CN112018948B CN112018948B CN202010887815.1A CN202010887815A CN112018948B CN 112018948 B CN112018948 B CN 112018948B CN 202010887815 A CN202010887815 A CN 202010887815A CN 112018948 B CN112018948 B CN 112018948B
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- swing rod
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- direct current
- current torque
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
- H02K11/22—Optical devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
- H02P3/08—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing a dc motor
- H02P3/16—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing a dc motor by combined electrical and mechanical braking
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a precise automatic locking mechanism of a direct current torque motor, which is used for stabilizing the direct current torque motor in a rotary table with high precision; a plurality of V-shaped grooves are distributed on a hub of the direct current torque motor in an equidistant surrounding manner; the automatic locking mechanism comprises an installation base, a driving assembly and a locking swing rod; the driving assembly is arranged on the mounting base; the locking swing rod is rotatably connected with the mounting base through a swing rod connecting shaft; the head of the locking swing rod is rotatably provided with a bearing which protrudes out of the lower end face of the locking swing rod; the bearing is matched with the V-shaped groove. The automatic locking mechanism has compact structure and convenient operation; the whole assembly process is simple, the adjustment is convenient, the reliability is good, the use requirements of the high-precision stable rotary table on small size and light weight of the locking mechanism can be met, and the direct current torque motor can be locked accurately and stably for a long time.
Description
Technical Field
The invention belongs to the technical field of mechanical devices, and particularly relates to a precise automatic locking mechanism of a direct-current torque motor.
Background
The rotary table is a rotatable workbench, can be used for ground, vehicle-mounted and ship-mounted environments, radar, antenna test, radio detection, darkroom antenna test, laboratory equipment and the like, and is widely applied to the field of engineering machinery. And with the development of industry, the requirements for the performance such as precision, stability and the like of the turntable are gradually free, so that the high-precision stable turntable is provided.
In the operation process of the high-precision stable turntable, a direct-current torque motor is required to drive the rotary table body to perform precise and stable rotary motion. In the process of long-time accurate rotary motion of the direct-current torque motor, if the rotary table control system detects out of control of the direct-current torque motor, for example, when the motor flies, the rotary table control system can immediately cut off the power of the direct-current torque motor, and meanwhile, the direct-current torque motor is required to be locked at an accurate position which can be judged by one rotary table control system. In the prior art, a locking mechanism is often used to lock a dc torque motor. The locking mechanism applied to the direct current torque motor on the high-precision stable turntable has strict requirements on the size and the weight of the locking mechanism; in a small space, it is required to achieve automatic locking of the torque motor, and the locking mechanism is also required to have a function of stably locking the torque motor for a long time. However, the existing locking mechanism for the direct-current torque motor has the disadvantages of complex structure, large size, low locking precision and poor stability, and cannot meet the requirement of a high-precision stable turntable.
Disclosure of Invention
The invention aims to overcome the technical problems in the prior art, provides an accurate automatic locking mechanism of a direct-current torque motor, solves the problems of complex structure, large size, low locking accuracy, poor stability and the like of the existing locking mechanism, and widens the application range of the automatic locking mechanism.
In order to achieve the purpose, the invention is implemented according to the following technical scheme:
a direct current torque motor accurate automatic locking mechanism is used for stabilizing a direct current torque motor in a rotary table with high accuracy; a plurality of V-shaped grooves are distributed on a hub of the direct current torque motor in an equidistant surrounding manner;
the automatic locking mechanism comprises an installation base, a driving assembly and a locking swing rod; the driving assembly is arranged on the mounting base; the locking swing rod is rotatably connected with the mounting base through a swing rod connecting shaft;
the head of the locking swing rod is rotatably provided with a bearing which protrudes out of the lower end face of the locking swing rod; the bearing is matched with the V-shaped groove;
the automatic locking mechanism is fixedly arranged on the outer side of the hub;
when the driving assembly drives the tail of the locking swing rod to the top end, the bearing at the head of the locking swing rod is embedded into a certain V-shaped groove of the hub;
when the driving assembly drives the tail of the locking swing rod to the bottom end, the bearing at the head of the locking swing rod leaves the V-shaped groove of the hub.
Preferably, the bearing is rotatably mounted on the head of the locking swing rod through a bearing fixing shaft and a nut.
Preferably, the driving assembly makes a linear reciprocating motion to push the tail of the locking swing rod, so that the locking swing rod swings around the swing rod connecting shaft.
Preferably, the driving assembly comprises a locking motor, a speed reducer, a lead screw nut, a locking ejector rod and a pressure spring assembly;
the speed reducer is positioned above the locking motor and is connected with the locking motor; the output end of the speed reducer is a lead screw, and a lead screw nut is arranged on the lead screw; locking the motor to drive the screw rod to rotate;
the locking ejector rod is U-shaped and comprises an upper top edge, a side connecting edge and a lower top edge; the lower top edge is connected with a screw nut; a guide support matched with the side connecting edge is arranged below the side connecting edge; the locking ejector rod reciprocates on the screw rod along with the screw rod nut;
the pressure spring assembly comprises a pressure spring and a pressure spring supporting seat; the pressure spring supporting seat is fixedly arranged above the upper top edge; the pressure spring is fixedly arranged on the lower end surface of the pressure spring supporting seat; the tail part of the locking swing rod is positioned between the pressure spring and the upper top edge; the pressure spring is contacted with the upper end surface of the tail part of the locking swing rod, and the upper top edge is contacted with the lower end surface of the tail part of the locking swing rod.
Preferably, the screw pressing ring is further sleeved on the screw on the upper end face of the lower top edge and is connected with the upper end face of the lower top edge.
Preferably, the pressure spring supporting seat is fixedly connected with a waist circular hole in the mounting base through a supporting seat fixing screw.
Preferably, the motor and the reducer are connected together to form a motor and reducer integrated machine; wherein the locking motor is a direct current servo motor; the locking motor is coaxial with the speed reducer; the speed reducer is fixedly installed on the installation base through the fixing base and the motor fixing screw, and a pressing ring is arranged between the speed reducer and the fixing base.
Preferably, the diameters of the locking motor and the reducer are both 6 mm.
The invention has the following action principle:
when the direct current torque motor accurate automatic locking mechanism is used, the locking ejector rod is driven to do linear reciprocating motion through the driving component lead screw, the tail of the locking swing rod is indirectly pushed, and the locking swing rod rotates around the swing rod connecting shaft. The guide support below the locking ejector rod can enable the locking ejector rod to perform linear reciprocating motion according to design requirements, and the opening and closing functions of the automatic locking mechanism are achieved. The position of the fixing screw of the installation supporting seat is designed into a waist-round hole, so that the position of the pressure spring supporting seat can be conveniently adjusted, the pressure of the pressure spring is further adjusted, and the locking motor can drive the locking swing rod to move according to a preset route.
When the direct current torque motor normally operates, the tail of the locking swing rod is kept at the bottom end through the pressure of the pressure spring, so that the locking swing rod is always in an open state, and the condition of mistakenly locking the direct current torque motor is avoided.
When the turntable control system detects that the direct-current torque motor is out of control, a locking motor (a direct-current servo motor) with the diameter of 6mm starts to work, a lead screw is driven to push the upper tail of a locking swing rod, a bearing at the head of the locking swing rod moves into a certain V-shaped groove of a hub of the direct-current torque motor, the position of the specific V-shaped groove locked by the direct-current torque motor is detected and judged through an angle measurement grating on a rotary table body of the high-precision stable turntable, and the torque motor is accurately and stably locked. In order to realize the smooth and stable movement of the head of the locking swing rod to the V-shaped groove, the bearing is arranged on the head of the locking swing rod, so that the bearing on the head of the locking swing rod can smoothly roll to the V-shaped groove on the cylindrical surface of the rotary table body.
After the bearing on the locking swing rod falls into the V-shaped groove, the locking motor applies thrust to the locking swing rod, and the bearing at the head of the locking swing rod applies radial pressure to two contact surfaces of the V-shaped groove, so that the bearing can be tightly clamped in the V-shaped groove.
The locking motor and the speed reducer adopt an integrated motor and speed reducer machine, the motor and the speed reducer share one rotating shaft, and the output end of the speed reducer is directly provided with the lead screw, so that the use of a coupler is reduced, and the mass and the volume are further reduced.
The automatic locking mechanism can be installed in a box body of a high-precision stable turntable through screws as a single whole, the automatic locking mechanism is driven by a direct-current brushless servo motor, and a speed reducer with a proper speed reduction ratio is selected, so that the locking mechanism meets the requirements of stress and movement.
All mechanical parts of the locking mechanism can be made of common materials such as common aluminum plates, round steel and the like, and the locking mechanism has the advantages of compact structure, good function, high precision, convenience in processing, simple integral assembly process, convenience in adjustment and calibration, good reliability and wide application range, and therefore has good economical efficiency and popularization. For precision rotary products such as a stable platform, an upper anti-image stabilization component, a photoelectric rotary table and the like, the automatic locking mechanism can also solve the problem of precision locking of the products.
The invention achieves the following beneficial effects:
the automatic locking mechanism has compact structure and convenient operation; the whole assembly process is simple, the adjustment is convenient, the reliability is good, the use requirements of the high-precision stable rotary table on small size and light weight of the locking mechanism can be met, and the direct current torque motor can be locked accurately and stably for a long time.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the locking swing link in an open state when the automatic locking mechanism of the present invention is in use;
FIG. 3 is a schematic view of the locking swing link in a closed state when the automatic locking mechanism of the present invention is in use;
fig. 4 is a partial cross-sectional view taken along line E-E of fig. 2.
In the figure: 1. locking the swing rod; 2. installing a base; 3. a pressure spring supporting seat; 4. a lead screw pressing ring; 5. a fixed seat; 6. pressing a ring; 7. locking the ejector rod; 8. a swing rod connecting shaft; 9. a bearing fixing shaft; 10. a pressure spring; 11. a guide support; 12. a screw is fixed on the supporting seat; 13. a motor fixing screw; 14. bearing, 15, nut; 16. locking the motor; 17. a speed reducer; 18. a lead screw; 19. a lead screw nut; 20. the top edge is arranged; 21. a side connecting edge; 22. a lower top edge; 23. an automatic locking mechanism; 24. a hub; 25. a V-shaped groove; 26. a DC torque motor; 27. a rotary table body; 28. a high-precision stable turntable; 29. angle measuring grating; 30. a waist circular hole.
Detailed Description
The invention will be further described with reference to the drawings and specific embodiments, which are illustrative of the invention and are not to be construed as limiting the invention.
The high-precision stabilizing turntable is a high-precision stabilizing turntable commonly used in the field, and the structure of the high-precision stabilizing turntable is clearly known by the technical personnel in the field according to the description of the invention.
Example 1
As shown in fig. 1 to 4, a precise automatic locking mechanism for a direct current torque motor, wherein the automatic locking mechanism 23 is used for stabilizing a direct current torque motor 26 in a rotary table 28 with high precision; eight V-shaped grooves 25 are equidistantly distributed on the hub 24 of the direct current torque motor 26 in a surrounding manner. The automatic locking mechanism 23 is fixedly mounted outside the hub 24.
The automatic locking mechanism 23 comprises a mounting base 2, a driving assembly and a locking swing rod 1; the driving component is arranged on the mounting base 2; the locking swing rod 1 is rotatably connected with the mounting base 2 through a swing rod connecting shaft 8.
The head of the locking swing rod is rotatably provided with a bearing 14 which protrudes out of the lower end surface of the locking swing rod 1, and the bearing 14 is rotatably arranged with a nut 15 through a bearing fixing shaft 9; the bearing 14 is fitted with a V-groove 25.
The driving component makes linear reciprocating motion to push the tail of the locking swing rod, so that the locking swing rod 1 swings around the swing rod connecting shaft 8.
The driving assembly comprises a locking motor 16, a speed reducer 17, a lead screw 18, a lead screw nut 19, a locking ejector rod 7 and a pressure spring assembly.
The speed reducer 17 is positioned above the locking motor 16 and connected with the locking motor 16; the output end of the speed reducer 17 is a screw 18, and a screw nut 19 is arranged on the screw 18; the lock motor 16 drives the lead screw 18 to rotate.
The locking ejector rod 7 is U-shaped and comprises an upper top edge 20, a side connecting edge 21 and a lower top edge 22; the lower top edge 22 is connected with a screw nut 19; a guide support 11 matched with the side connecting edge is arranged below the side connecting edge 21; the locking ram 7 reciprocates with the spindle nut 19 on the spindle 18.
The pressure spring assembly comprises a pressure spring 10 and a pressure spring supporting seat 3; the pressure spring supporting seat 3 is fixedly arranged above the upper top edge 20; the pressure spring 10 is fixedly arranged on the lower end face of the pressure spring supporting seat 3; the tail part of the locking swing rod is positioned between the pressure spring 10 and the upper top edge 20; the pressure spring 10 is contacted with the upper end surface of the tail part of the locking swing rod, and the upper top edge 20 is contacted with the lower end surface of the tail part of the locking swing rod.
The screw rod 18 on the upper end surface of the lower top edge 22 is also sleeved with a screw rod pressing ring 4, and the screw rod pressing ring 4 is connected with the upper end surface of the lower top edge 22. The pressure spring supporting seat 3 is fixedly connected with a waist round hole 30 on the mounting base 2 through a supporting seat fixing screw 12.
The locking motor 16 and the reducer 17 which are connected together are a motor and reducer integrated machine; wherein the locking motor 16 is a dc servo motor; the locking motor 16 is coaxial with the reducer 17; the speed reducer 17 is fixedly installed on the installation base 2 through the fixed base 5 and the motor fixing screw 13, and a pressing ring 6 is arranged between the speed reducer 17 and the fixed base 5.
The diameters of the locking motor 16 and the reducer 17 are both 6 mm.
When the driving assembly drives the tail of the locking swing rod to the top end, the locking swing rod 1 is in a closed state, the locking swing rod 1 is perpendicular to the locking ejector rod 7, and a bearing 14 at the head of the locking swing rod is embedded into a certain V-shaped groove 25 of the hub 24; when the driving component drives the tail of the locking swing rod to the bottom end, the locking swing rod 1 is in an open state, and the bearing 14 at the head of the locking swing rod leaves the V-shaped groove 25 of the hub 24.
As shown in fig. 4, which is a partial cross-sectional view taken along line E-E of fig. 2. The figure mainly shows the relative positions of the direct current torque motor 26, the rotary table body 27 and the angle measuring grating 29 in the high-precision stable rotary table 28. When the locking device is used, the driving assembly drives the bearing on the locking swing rod to move into a certain V-shaped groove of the hub of the direct-current torque motor, and the position of the direct-current torque motor locked to the specific V-shaped groove can be judged through angle measurement grating detection on the rotary table body, so that the torque motor can be accurately and stably locked.
The technical solution of the present invention is not limited to the limitations of the above specific embodiments, and all technical modifications made according to the technical solution of the present invention fall within the protection scope of the present invention.
Claims (5)
1. A direct current torque motor accurate automatic locking mechanism is used for stabilizing a direct current torque motor in a rotary table with high accuracy; a plurality of V-shaped grooves are distributed on a hub of the direct current torque motor in an equidistant surrounding manner; the method is characterized in that:
the automatic locking mechanism comprises an installation base, a driving assembly and a locking swing rod; the driving assembly is arranged on the mounting base; the locking swing rod is rotatably connected with the mounting base through a swing rod connecting shaft;
the head of the locking swing rod is rotatably provided with a bearing which protrudes out of the lower end face of the locking swing rod; the bearing is matched with the V-shaped groove;
the automatic locking mechanism is fixedly arranged on the outer side of the hub;
when the driving assembly drives the tail of the locking swing rod to the top end, the bearing at the head of the locking swing rod is embedded into a certain V-shaped groove of the hub;
when the driving assembly drives the tail of the locking swing rod to the bottom end, the bearing at the head of the locking swing rod leaves the V-shaped groove of the hub;
the bearing is rotatably arranged at the head of the locking swing rod through a bearing fixing shaft and a nut;
the driving assembly makes linear reciprocating motion to push the tail of the locking swing rod, so that the locking swing rod swings around the swing rod connecting shaft;
the driving assembly comprises a locking motor, a speed reducer, a lead screw nut, a locking ejector rod and a pressure spring assembly;
the speed reducer is positioned above the locking motor and is connected with the locking motor; the output end of the speed reducer is a lead screw, and a lead screw nut is arranged on the lead screw; locking the motor to drive the screw rod to rotate;
the locking ejector rod is U-shaped and comprises an upper top edge, a side connecting edge and a lower top edge; the lower top edge is connected with a screw nut; a guide support matched with the side connecting edge is arranged below the side connecting edge; the locking ejector rod reciprocates on the screw rod along with the screw rod nut;
the pressure spring assembly comprises a pressure spring and a pressure spring supporting seat; the pressure spring supporting seat is fixedly arranged above the upper top edge; the pressure spring is fixedly arranged on the lower end surface of the pressure spring supporting seat; the tail part of the locking swing rod is positioned between the pressure spring and the upper top edge; the pressure spring is contacted with the upper end surface of the tail part of the locking swing rod, and the upper top edge is contacted with the lower end surface of the tail part of the locking swing rod.
2. The precise automatic locking mechanism of the direct current torque motor as claimed in claim 1, characterized in that: the lead screw pressing ring is sleeved on the lead screw on the upper end face of the lower top edge and is connected with the upper end face of the lower top edge.
3. The accurate automatic locking mechanism of a direct current torque motor of claim 2, characterized in that: the pressure spring supporting seat is fixedly connected with a waist circular hole on the mounting base through a supporting seat fixing screw.
4. The precise automatic locking mechanism of the direct current torque motor as claimed in claim 3, characterized in that: the locking motor and the reducer are connected together and are a motor and reducer integrated machine; wherein the locking motor is a direct current servo motor; the locking motor is coaxial with the speed reducer; the speed reducer is fixedly installed on the installation base through the fixing base and the motor fixing screw, and a pressing ring is arranged between the speed reducer and the fixing base.
5. The precise automatic locking mechanism of the direct current torque motor as claimed in claim 4, wherein: the diameters of the locking motor and the speed reducer are both 6 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010887815.1A CN112018948B (en) | 2020-08-28 | 2020-08-28 | Accurate automatic locking mechanism of direct current torque motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010887815.1A CN112018948B (en) | 2020-08-28 | 2020-08-28 | Accurate automatic locking mechanism of direct current torque motor |
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| Publication Number | Publication Date |
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| CN112018948A CN112018948A (en) | 2020-12-01 |
| CN112018948B true CN112018948B (en) | 2021-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010887815.1A Active CN112018948B (en) | 2020-08-28 | 2020-08-28 | Accurate automatic locking mechanism of direct current torque motor |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008045655A (en) * | 2006-08-15 | 2008-02-28 | Akebono Brake Ind Co Ltd | Drum brake device |
| CN107327518A (en) * | 2017-08-30 | 2017-11-07 | 北京新能源汽车股份有限公司 | Parking mechanism and vehicle |
| CN208669889U (en) * | 2018-07-12 | 2019-03-29 | 湖南科众兄弟科技有限公司 | The automatically lock and unlocking mechanism of rotary axis class equipment |
| CN209627143U (en) * | 2019-03-21 | 2019-11-12 | 浙江盘毂动力科技有限公司 | A kind of disc type electric machine for electric car |
| CN211039471U (en) * | 2019-11-05 | 2020-07-17 | 天津五一机电设备有限公司 | Brake device of beam-pumping unit |
-
2020
- 2020-08-28 CN CN202010887815.1A patent/CN112018948B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008045655A (en) * | 2006-08-15 | 2008-02-28 | Akebono Brake Ind Co Ltd | Drum brake device |
| CN107327518A (en) * | 2017-08-30 | 2017-11-07 | 北京新能源汽车股份有限公司 | Parking mechanism and vehicle |
| CN208669889U (en) * | 2018-07-12 | 2019-03-29 | 湖南科众兄弟科技有限公司 | The automatically lock and unlocking mechanism of rotary axis class equipment |
| CN209627143U (en) * | 2019-03-21 | 2019-11-12 | 浙江盘毂动力科技有限公司 | A kind of disc type electric machine for electric car |
| CN211039471U (en) * | 2019-11-05 | 2020-07-17 | 天津五一机电设备有限公司 | Brake device of beam-pumping unit |
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| CN112018948A (en) | 2020-12-01 |
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