CN109787445B - Torsion-adjustable worm gear speed reducer and control method - Google Patents

Torsion-adjustable worm gear speed reducer and control method Download PDF

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Publication number
CN109787445B
CN109787445B CN201910106087.3A CN201910106087A CN109787445B CN 109787445 B CN109787445 B CN 109787445B CN 201910106087 A CN201910106087 A CN 201910106087A CN 109787445 B CN109787445 B CN 109787445B
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pole shoe
hole
guide hole
pole
starting auxiliary
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CN109787445A (en
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王水林
殷金利
徐国
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Hangzhou Yuqiu Machine Co ltd
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Hangzhou Yuqiu Machine Co ltd
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Abstract

The invention discloses a torque-adjustable worm gear speed reducer and a control method, belonging to the technical field of self-starting of a main motor of the worm gear speed reducer. The torsion-adjustable worm and gear speed reducer comprises a torsion-adjustable worm and gear speed reducer body, wherein a main motor of the torsion-adjustable worm and gear speed reducer body comprises a stator and a permanent magnet rotor which is rotatably arranged in the stator, the stator comprises a fixed ring, a plurality of pole bodies are uniformly and integrally connected and arranged on the inner surface of the fixed ring, a pole shoe is respectively, independently and integrally and symmetrically connected and arranged on the inner end surface of each pole body, and each pole shoe comprises a left pole shoe and a right pole shoe; gaps between the arc inner surface of each pole shoe and the arc outer surface of the permanent magnet rotor are arranged at intervals of uniform air gaps.

Description

Torsion-adjustable worm gear speed reducer and control method
Technical Field
The invention relates to the technical field of self-starting of a main motor of a worm and gear speed reducer, in particular to a worm and gear speed reducer with adjustable torsion and a control method.
Background
The main motor of the speed reducer is generally a single-phase alternating current brushless direct current motor. At present, the permanent magnet rotor and the stator of a main motor of the speed reducer are arranged at non-uniform air gap intervals, namely, the center line of the permanent magnet rotor and the center line of the stator are not on the same straight line, so that one side of the air gap interval between the permanent magnet rotor and the stator is larger, the other side of the air gap interval between the permanent magnet rotor and the stator is smaller, and the utilization rate of the permanent magnet rotor is lower due to the non-uniform air gap interval arrangement between the permanent magnet rotor and the stator.
Disclosure of Invention
The invention provides a torque-adjustable worm and gear speed reducer and a control method, aiming at solving the defect that the utilization rate of a permanent magnet rotor is low due to the fact that the gap interval between a stator and the permanent magnet rotor of the existing main motor is not uniform, and the gap interval between one side of the stator and one side of the permanent magnet rotor is larger, and the gap interval between the stator and the permanent magnet rotor is uniform, the utilization rate of the permanent magnet rotor is high, the difference of the rotating torques at two ends of a pole shoe can be adjusted, the self-starting rotating torque can be adjusted, and the reliability is good.
In order to achieve the purpose, the invention adopts the following technical scheme:
the torsion-adjustable worm and gear speed reducer comprises a torsion-adjustable worm and gear speed reducer body, wherein a main motor of the torsion-adjustable worm and gear speed reducer body comprises a stator and a permanent magnet rotor which is rotatably arranged in the stator, the stator comprises a fixed ring, a plurality of pole bodies are uniformly and integrally connected and arranged on the inner surface of the fixed ring, a pole shoe is respectively and independently and integrally and symmetrically connected and arranged on the inner end surface of each pole body, each pole shoe comprises a left pole shoe and a right pole shoe, and the left pole shoe and the right pole shoe of each pole shoe are symmetrically arranged along the center line of the corresponding pole body in a left-right mode; the arc inner surface of each pole shoe is positioned on the same circumferential surface; gaps between the arc inner surface of each pole shoe and the arc outer surface of the permanent magnet rotor are arranged at intervals of uniform air gaps, and the circle center of the inner arc of each pole shoe falls on the axis of the permanent magnet rotor;
a guide hole is respectively arranged in each left pole shoe, the right end of each guide hole extends outwards in the pole body and is communicated with the outer surface of the fixed ring, and the left end of each guide hole is communicated with the left end surface of the left pole shoe; through hole holes are uniformly arranged in the left pole shoe right above each guide hole in a pair, the right end of each through hole extends outwards in the pole body and is communicated with the outer surface of the fixed ring, and the left end of each through hole is communicated with the left end surface of the left pole shoe; the hole center line of each guide hole and the hole center line of each through hole are parallel to each other; the hole center line of each guide hole is vertical to the different surface of the shaft center line of the permanent magnet rotor;
a movable adjusting and locking gear set is respectively arranged on the outer surface of the fixed ring between the outer orifice of each through hole and the outer orifice of the corresponding guide hole;
a starting auxiliary adjusting rod group is respectively arranged in each guide hole in a sliding manner; each starting auxiliary adjusting rod group is formed by connecting a plurality of starting auxiliary adjusting rods which are made of the same material as pole shoes side by side in sequence through flexible wires, and the axial lead of each starting auxiliary adjusting rod is vertical to the hole lead of the guide hole;
a pull belt is movably arranged in each through hole respectively; the left end of each pull belt is fixedly connected to the left end of the corresponding starting auxiliary adjusting rod group, and the right end of each pull belt is fixedly connected to the right end of the corresponding starting auxiliary adjusting rod group after passing through the belt moving adjusting locking gear group; the belt movement adjusting and locking gear set can adjust the pull belt to move left and right and fix the pull belt, and the pull belt can drive the starting auxiliary adjusting rod set to move left and right in the guide hole;
the lower end of a pull wire is fixedly connected to a pull belt positioned in the through hole, and a wire fixing bolt capable of pressing and fixing the pull wire is arranged on the outer surface of a fixed ring at the position of the belt movement adjusting and locking gear set.
The scheme can adjust the number of the starting auxiliary adjusting rod groups entering the left pole shoe through adjusting the belt moving adjusting locking gear group, and the starting auxiliary adjusting rod is made of the same material as the pole shoe, and the two ends and the upper surface and the lower surface of each starting auxiliary adjusting rod are in contact connection with the inner hole wall of the guide hole, so that the starting auxiliary adjusting rod and the pole shoe form a whole. The asymmetric rotating moment quantity on the left pole shoe and the asymmetric rotating moment quantity on the right pole shoe can be changed by changing the number of the starting auxiliary adjusting rod groups entering the left pole shoe, so that the requirement that an even air gap is arranged between the arc inner surface of the pole shoe and the arc outer surface of the permanent magnet rotor at intervals is met, the rotating moment required by single-phase self-starting rotation of the main motor is obtained, and the adjustment of the difference of the rotating moments at the two ends of the pole shoe is realized.
The right adjusting belt moves to adjust the locking gear set, so that the pull belt rotates leftwards, more starting auxiliary adjusting rods enter the left pole shoe, the left pole shoe and the starting auxiliary adjusting rods entering the left pole shoe form a new rotating moment of the left pole shoe, the difference between the rotating moment of the left pole shoe and the rotating moment of the right pole shoe is small, and the sum of self-starting rotating moments is large; on the contrary, the left adjusting belt moves to adjust the locking gear set, the pull belt rotates rightwards, so that the number of the starting auxiliary adjusting rods entering the left pole shoe is small, the left pole shoe and the starting auxiliary adjusting rods entering the left pole shoe form a new left pole shoe, the difference between the rotating moment of the new left pole shoe and the rotating moment of the right pole shoe is large, and the sum of the self-starting rotating moments is small. After the pull belt is adjusted, the pull belt is fixed by the belt moving adjusting locking gear set, and then the upper end of the pull wire is tensioned and then fixed on the wire fixing bolt, so that the adjustment can be completed.
The scheme ensures that the self-starting rotating torque of the main motor is adjustable, the air gap interval between the stator and the permanent magnet rotor is uniform, the utilization rate of the permanent magnet rotor is high, and the self-starting rotating torque is adjustable.
According to the scheme, the arc inner surface of the middle pole shoe and the arc outer surface of the permanent magnet rotor are arranged at intervals of uniform air gaps, so that the stator and the permanent magnet rotor are arranged at intervals of uniform air gaps, and the rotating torque required by single-phase self-starting of the main motor is obtained. The air gap between the stator and the permanent magnet rotor is uniform, the permanent magnet rotor is high in utilization efficiency, the difference of the rotating torques at two ends of the pole shoe can be adjusted, the self-starting rotating torque can be adjusted, and the reliability is good.
Preferably, each starting auxiliary adjusting rod comprises a plurality of punching sheets and a connecting shaft, a hole is drilled in the middle of each punching sheet, then the connecting shaft penetrates into the holes of the punching sheets to string the punching sheets, and the two punching sheets at the uppermost end and the lowermost end are pressed and then welded on the connecting shaft to obtain the laminated starting auxiliary adjusting rod; and an insulating layer is arranged between adjacent punching sheets.
The laminated starting auxiliary adjusting rod can reduce the electric eddy current and has high reliability.
Preferably, the pull belt is provided with scales, and the outer surface of the fixed ring at the position of the belt movement adjusting and locking gear set is provided with a mark line. The scale is convenient for adjusting and controlling, and the use is convenient and simple.
Preferably, a hole is respectively arranged at each scale of the drawstring. The belt holes are convenient to adjust and control, the use is convenient and simple, and the reliability is high.
Preferably, in the control method for the torque-adjustable worm and gear speed reducer, the right adjusting belt moves the adjusting locking gear set, the pull belt rotates leftwards, so that more auxiliary adjusting rods enter the left pole shoe, the left pole shoe and the auxiliary adjusting rods enter the left pole shoe together form a new rotating moment of the left pole shoe, the difference between the rotating moment of the left pole shoe and the rotating moment of the right pole shoe is small, and the sum of the self-starting rotating moments is large; on the contrary, the left adjusting belt moves to adjust the locking gear set, so that the pull belt rotates rightwards, the starting auxiliary adjusting rods entering the left pole shoe are fewer, the left pole shoe and the starting auxiliary adjusting rods entering the left pole shoe form a new left pole shoe, the difference between the rotating moment of the new left pole shoe and the rotating moment of the right pole shoe is larger, and the sum of the self-starting rotating moments is smaller; after the drawstring is adjusted, the drawstring is fixed by the drawstring moving adjusting locking gear set to complete the adjustment.
The invention can achieve the following effects:
according to the invention, the uniform air gap is arranged between the arc inner surface of the middle pole shoe and the arc outer surface of the permanent magnet rotor at intervals, so that the stator and the permanent magnet rotor are arranged at intervals of the uniform air gap, and the rotation torque required by the single-phase self-starting of the main motor is obtained. The gap interval between the stator and the permanent magnet rotor is uniform, the utilization efficiency of the permanent magnet rotor is high, the adjustment of the difference of the rotating moments at the two ends of the pole shoe can be realized, and the reliability is good.
Drawings
Fig. 1 is a schematic view of a connection structure of the present invention in which the gap interval between the stator and the permanent magnet rotor is uniform.
FIG. 2 is a schematic view of the connection structure in a state that the auxiliary adjusting rod enters the left pole shoe when the auxiliary adjusting rod is started.
FIG. 3 is a schematic view of the connection structure in a state when the auxiliary adjusting rod is not started and enters the left pole shoe.
FIG. 4 is a schematic view of a state of the attachment structure of the pull tape of the present invention with a scale facing the mark line on the outer surface of the stationary ring.
FIG. 5 is a schematic view of a laminated start-up assist stick according to the present invention.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
In an embodiment, a torsion-adjustable worm and gear speed reducer, as shown in fig. 1 to 5, includes a torsion-adjustable worm and gear speed reducer body, a main motor 8 of the torsion-adjustable worm and gear speed reducer body includes a stator 6 and a permanent magnet rotor 7 rotatably disposed in the stator, the stator includes a fixed ring 5, a plurality of pole bodies 4 are uniformly and integrally connected to the inner surface of the fixed ring, a pole shoe 3 is respectively and independently and integrally and symmetrically connected to the inner end surface of each pole body, each pole shoe includes a left pole shoe 1 and a right pole shoe 2, and the left pole shoe and the right pole shoe of each pole shoe are symmetrically disposed along the center line of the corresponding pole body; the arc inner surface of each pole shoe is positioned on the same circumferential surface; gaps between the arc inner surface of each pole shoe and the arc outer surface of the permanent magnet rotor are arranged at uniform air gap intervals 9, and the circle center of the inner arc of each pole shoe falls on the axis of the permanent magnet rotor;
a guide hole 17 is respectively arranged in each left pole shoe, the right end of each guide hole extends outwards in the pole body and is communicated with the outer surface of the fixed ring, and the left end of each guide hole is communicated with the left end surface of the left pole shoe; a through hole 15 is formed in the left pole shoe right above each guide hole in a one-to-one manner, the right end of each through hole extends outwards in the pole body and is communicated with the outer surface of the fixed ring, and the left end of each through hole is communicated with the left end surface of the left pole shoe; the hole center line of each guide hole and the hole center line of each through hole are parallel to each other; the hole center line of each guide hole is vertical to the different surface of the shaft center line of the permanent magnet rotor;
a gear set 24 with a movable adjusting and locking function is respectively arranged on the outer surface of the fixed ring between the outer orifice of each through hole and the outer orifice of the corresponding guide hole;
a starting auxiliary adjusting rod group 11 is respectively arranged in each guide hole in a sliding manner; each starting auxiliary adjusting rod group is formed by connecting a plurality of starting auxiliary adjusting rods 10 which are made of the same material as pole shoes side by side in sequence by flexible wires, and the axial lead of each starting auxiliary adjusting rod is vertical to the hole lead of the guide hole;
a drawstring 16 is movably arranged in each through hole respectively; the left end of each pull belt is fixedly connected to the left end of the corresponding starting auxiliary adjusting rod group, and the right end of each pull belt is fixedly connected to the right end of the corresponding starting auxiliary adjusting rod group after passing through the belt moving adjusting locking gear group; the belt moving adjusting locking gear set can adjust the pull belt to move left and right and fix the pull belt, and the pull belt can drive the starting auxiliary adjusting rod set to move left and right in the guide hole.
The lower end of a pull wire 28 is fixedly connected to a pull belt positioned in the through hole, and a wire fixing bolt 29 capable of pressing and fixing the pull wire is arranged on the outer surface of the fixed ring at the position of the belt movement adjusting and locking gear set.
Each starting auxiliary adjusting rod comprises a plurality of punching sheets 30 and a connecting shaft 32, a hole 33 is drilled in the middle of each punching sheet, then the connecting shaft penetrates into the holes of the punching sheets to string the punching sheets, and the two punching sheets at the uppermost end and the lowermost end are pressed and then welded on the connecting shaft to obtain a laminated starting auxiliary adjusting rod; and an insulating layer 31 is arranged between adjacent punching sheets.
The drawstring is provided with a scale 26, and the outer surface of the fixed ring at the position of the gear set with the movement adjustment and locking is provided with a mark line 27. Each scale of the drawstring is provided with a hole 25.
The number of the starting auxiliary adjusting rod group entering the left pole shoe can be adjusted by adjusting the adjusting belt to move the adjusting locking gear group, the starting auxiliary adjusting rod is made of the same material as the pole shoe, and the two ends and the upper surface and the lower surface of each starting auxiliary adjusting rod are in contact connection with the inner hole wall of the guide hole, so that the starting auxiliary adjusting rod and the pole shoe form a whole. The asymmetric rotating moment quantity on the left pole shoe and the asymmetric rotating moment quantity on the right pole shoe can be changed by changing the number of the starting auxiliary adjusting rod groups entering the left pole shoe, so that the requirement that an even air gap is arranged between the arc inner surface of the pole shoe and the arc outer surface of the permanent magnet rotor at intervals is met, and the rotating moment required by single-phase self-starting rotation of the main motor is also obtained.
A control method suitable for the torque-adjustable worm and gear speed reducer is characterized in that a right adjusting belt moves to adjust a locking gear set, a pull belt rotates leftwards, so that more starting auxiliary adjusting rods enter a left pole shoe, the left pole shoe and the starting auxiliary adjusting rods entering the left pole shoe form a new rotating moment of the left pole shoe, the difference between the rotating moment of the left pole shoe and the rotating moment of the right pole shoe is small, and the sum of self-starting rotating moments is large; on the contrary, the left adjusting belt moves to adjust the locking gear set, so that the pull belt rotates rightwards, the starting auxiliary adjusting rods entering the left pole shoe are fewer, the left pole shoe and the starting auxiliary adjusting rods entering the left pole shoe form a new left pole shoe, the difference between the rotating moment of the new left pole shoe and the rotating moment of the right pole shoe is larger, and the sum of the self-starting rotating moments is smaller; after the pull belt is adjusted, the pull belt is fixed by the belt moving adjusting locking gear set, and then the upper end of the pull wire is tensioned and then fixed on the wire fixing bolt, so that the adjustment can be completed.
The laminated starting auxiliary adjusting rod can reduce the electric eddy current and has high reliability.
The embodiment enables the self-starting rotating torque of the main motor to be adjustable, the air gap between the stator and the permanent magnet rotor is uniform, and the utilization rate of the permanent magnet rotor is high.
The scales and the holes are convenient to adjust and control, the use is convenient and simple, and the reliability is high.
In the embodiment, the arc inner surface of the middle pole shoe and the arc outer surface of the permanent magnet rotor are arranged at intervals of a uniform air gap, so that the stator and the permanent magnet rotor are arranged at intervals of a uniform air gap, and the rotating torque required by the single-phase self-starting of the main motor is obtained. The gap interval between the stator and the permanent magnet rotor is uniform, the utilization efficiency of the permanent magnet rotor is high, the adjustment of the difference of the rotating moments at the two ends of the pole shoe is realized, and the reliability is good.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the implementation is not limited to the above-described embodiments, and those skilled in the art can make various changes or modifications within the scope of the appended claims.

Claims (1)

1. The torsion-adjustable worm and gear speed reducer comprises a torsion-adjustable worm and gear speed reducer body, wherein a main motor of the torsion-adjustable worm and gear speed reducer body comprises a stator and a permanent magnet rotor which is rotatably arranged in the stator, and the torsion-adjustable worm and gear speed reducer is characterized in that the stator comprises a fixed ring, a plurality of pole bodies are uniformly and integrally connected and arranged on the inner surface of the fixed ring, a pole shoe is respectively and independently and integrally and symmetrically connected and arranged on the inner end surface of each pole body, each pole shoe comprises a left pole shoe and a right pole shoe, and the left pole shoe and the right pole shoe of each pole shoe are symmetrically arranged along the center line of the corresponding pole body in; the arc inner surface of each pole shoe is positioned on the same circumferential surface; gaps between the arc inner surface of each pole shoe and the arc outer surface of the permanent magnet rotor are arranged at intervals of uniform air gaps, and the circle center of the inner arc of each pole shoe falls on the axis of the permanent magnet rotor;
a guide hole is respectively arranged in each left pole shoe, the right end of each guide hole extends outwards in the pole body and is communicated with the outer surface of the fixed ring, and the left end of each guide hole is communicated with the left end surface of the left pole shoe; through hole holes are uniformly arranged in the left pole shoe right above each guide hole in a pair, the right end of each through hole extends outwards in the pole body and is communicated with the outer surface of the fixed ring, and the left end of each through hole is communicated with the left end surface of the left pole shoe; the hole center line of each guide hole and the hole center line of each through hole are parallel to each other; the hole center line of each guide hole is vertical to the different surface of the shaft center line of the permanent magnet rotor;
a movable adjusting and locking gear set is respectively arranged on the outer surface of the fixed ring between the outer orifice of each through hole and the outer orifice of the corresponding guide hole;
a starting auxiliary adjusting rod group is respectively arranged in each guide hole in a sliding manner; each starting auxiliary adjusting rod group is formed by connecting a plurality of starting auxiliary adjusting rods which are made of the same material as pole shoes side by side in sequence through flexible wires, and the axial lead of each starting auxiliary adjusting rod is vertical to the hole lead of the guide hole;
a pull belt is movably arranged in each through hole respectively; the left end of each pull belt is fixedly connected to the left end of the corresponding starting auxiliary adjusting rod group, and the right end of each pull belt is fixedly connected to the right end of the corresponding starting auxiliary adjusting rod group after passing through the belt moving adjusting locking gear group; the belt movement adjusting and locking gear set can adjust the pull belt to move left and right and fix the pull belt, and the pull belt can drive the starting auxiliary adjusting rod set to move left and right in the guide hole;
the lower end of one pull wire is fixedly connected to a pull belt positioned in the through wire hole, and a wire fixing bolt capable of pressing and fixing the pull wire is arranged on the outer surface of a fixed ring at the position of the belt movement adjusting and locking gear set;
the two ends and the upper and lower surfaces of each starting auxiliary adjusting rod are in contact connection with the inner hole wall of the guide hole, so that the starting auxiliary adjusting rods and the pole shoes form a whole.
CN201910106087.3A 2019-02-01 2019-02-01 Torsion-adjustable worm gear speed reducer and control method Active CN109787445B (en)

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CN109787445B true CN109787445B (en) 2020-07-17

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020252693A1 (en) * 2019-06-19 2020-12-24 威刚科技股份有限公司 Axial stator of axial clearance type rotation motor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998018189A3 (en) * 1996-10-22 1998-08-20 Wolfgang Hill Electrical machine with a single pole winding
CN2582251Y (en) * 2002-10-30 2003-10-22 广东美的集团股份有限公司 Iron core of stator of shaded pole motor
CN102474169A (en) * 2009-07-31 2012-05-23 C.&E.泛音有限公司 Series motor having a permanent magnet
CN103812244A (en) * 2012-11-01 2014-05-21 Lg电子株式会社 Rotor and motor and/or electric vehicle driving apparatus including the same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6952058B2 (en) * 2003-02-20 2005-10-04 Wecs, Inc. Wind energy conversion system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998018189A3 (en) * 1996-10-22 1998-08-20 Wolfgang Hill Electrical machine with a single pole winding
CN2582251Y (en) * 2002-10-30 2003-10-22 广东美的集团股份有限公司 Iron core of stator of shaded pole motor
CN102474169A (en) * 2009-07-31 2012-05-23 C.&E.泛音有限公司 Series motor having a permanent magnet
CN103812244A (en) * 2012-11-01 2014-05-21 Lg电子株式会社 Rotor and motor and/or electric vehicle driving apparatus including the same

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