CN115242029A - Reversing speed-changing speed reducer - Google Patents
Reversing speed-changing speed reducer Download PDFInfo
- Publication number
- CN115242029A CN115242029A CN202210829614.5A CN202210829614A CN115242029A CN 115242029 A CN115242029 A CN 115242029A CN 202210829614 A CN202210829614 A CN 202210829614A CN 115242029 A CN115242029 A CN 115242029A
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- China
- Prior art keywords
- control
- spline wheel
- spline
- fixedly connected
- box body
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Classifications
-
- 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
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
- H01H47/18—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for introducing delay in the operation of the relay
-
- 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
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention relates to the technical field of speed reducers, in particular to a reversing variable speed reducer, which comprises a box body, wherein a driven gear is arranged in the box body; the driven shaft is rotatably connected to the box body, one end of the driven shaft extends into the box body, and the driven gear is fixedly connected to one end of the driven shaft in the box body; the driving shaft is rotatably connected to the box body, and one end of the driving shaft extends into the box body; the driving gear is arranged in the box body and is meshed with the driven gear; further comprising an interruption unit provided on the drive shaft; the interruption unit is controlled by the control unit, and a driving motor is arranged in the control unit; the driving gear is rotatably connected to one end of the driving shaft in the box body. According to the invention, by arranging the interruption unit, after the driving motor stops rotating, the interruption unit is started, so that the connection between the driving shaft and the driving gear is disconnected, the driven shaft idles, and the purpose of protecting the driving motor is achieved.
Description
Technical Field
The invention relates to the technical field of speed reducers, in particular to a reversing speed changing speed reducer.
Background
A speed reducer is a power transmission mechanism that obtains a large torque by reducing the number of revolutions of a motor to a desired number of revolutions using a gear speed converter. In the current mechanisms for transmitting power and motion, the application range of the speed reducer is quite wide, and the speed reducer has the functions of reducing speed and increasing torque. Therefore, the device is widely applied to speed and torque conversion equipment.
The existing reversing speed-changing reducer comprises a bevel gear reducer, wherein a group of bevel gears are meshed in a box body, so that a driving shaft provides torque for driven shafts in different directions to achieve the purpose of reversing.
However, in the conventional reversing speed-changing reducer, if the driven shaft is connected to a mechanism (such as a flywheel) with large moment of inertia, when the driving motor is stopped, the driven shaft can continuously keep rotating due to the large moment of inertia, and the damping in the driving motor can be damaged for a long time.
Therefore, a reversing speed-changing reducer is provided.
Disclosure of Invention
The invention aims to provide a reversing variable-speed reducer, which solves the problems in the background technology by arranging an interruption unit, wherein the interruption unit is started after a driving motor stops rotating, so that the connection between a driving shaft and a driving gear is disconnected, and a driven shaft idles.
In order to achieve the purpose, the invention provides the following technical scheme:
a reversing variable speed reducer comprising:
the box body is internally provided with a driven gear;
the driven shaft is rotationally connected to the box body, one end of the driven shaft extends into the box body, and the driven gear is fixedly connected to one end of the driven shaft in the box body;
the driving shaft is rotationally connected to the box body, and one end of the driving shaft extends into the box body;
the driving gear is arranged in the box body and is meshed with the driven gear;
further comprising:
an interruption unit provided on a drive shaft;
the interruption unit is controlled by the control unit, and a driving motor is arranged in the control unit;
the driving gear is rotatably connected to one end of the driving shaft in the box body.
Preferably, the interruption unit comprises a first spline wheel, the first spline wheel is fixedly connected to the large end of the driving gear, a second spline wheel is fixedly connected to the shaft body of the driving shaft, the specifications of splines of the first spline wheel and the second spline wheel are consistent, a gap is reserved between the second spline wheel and the first spline wheel, a combination sleeve is meshed at the spline of the second spline wheel, splines matched with the first spline wheel and the second spline wheel are arranged on an inner ring of the combination sleeve, and the combination sleeve can slide relative to the second spline wheel.
Preferably, the inner ring and the outer ring of the combination sleeve are in rotary connection.
Preferably, a control groove is formed in the outer ring of the combination sleeve, a control ring is fixedly connected in the control groove, a control rod is fixedly connected to the outer ring of the control ring, and the other end of the control rod extends into the control unit.
Preferably, the control unit includes the control box, fixedly connected with driving motor in the control box, driving motor's output and the one end fixed connection of drive shaft, the one end that the control ring was kept away from to the control lever stretches into in the control box, and stretches into the one end fixedly connected with magnet in the control box, fixedly connected with electro-magnet in the box, the electro-magnet sets up the one side that the control lever stretched into in the control box, and the electro-magnet with magnet is relative.
Preferably, one side of the control rod in the control box is fixedly connected with a spring, and the other end of the spring is fixedly connected to the side, extending into the control rod, in the control box.
Preferably, the width of the combination sleeve is larger than the gap between the second spline wheel and the first spline wheel, the distance between the electromagnet and the magnet is smaller than the distance between the control ring and the large end of the driving gear, and the adsorption force of the electromagnet on the magnet when the electromagnet is started is larger than the elastic force of the spring when the spring contracts.
Preferably, one end, close to the combination sleeve, of the spline on the spline wheel I is provided with a conical surface, and one end, close to the spline wheel, of the spline on the combination sleeve is provided with a conical surface identical to the spline wheel I.
Preferably, a delay relay is fixedly connected in the control box, the delay relay is electrically connected with the driving motor, and the electromagnet is electrically connected with the delay relay.
Preferably, the first spline wheel, the second spline wheel and the combination sleeve are all made of wear-resistant and high-temperature-resistant metal materials, and tolerance grades at matching positions are all above IT 6.
Compared with the prior art, the invention has the beneficial effects that:
1. compared with the traditional technical scheme, the reversing variable speed reducer has the advantages that the interruption unit is arranged, and the interruption unit is started after the driving motor stops rotating, so that the connection between the driving shaft and the driving gear is disconnected, the driven shaft idles, and the purpose of protecting the driving motor is achieved.
2. According to the reversing speed change reducer, the control unit is arranged, the interruption unit is controlled to enable the combination sleeve to move towards the spline wheel I before the driving motor is started, the driving shaft can drive the driving gear to rotate, and the interruption unit is controlled when the driving motor is powered off, so that the driving shaft and the driving gear are disconnected.
3. According to the reversing variable speed reducer, the time delay relay is arranged, when the equipment is powered on, current firstly passes through the electromagnet, the electromagnet is powered on and then passes through the time delay relay, the time delay relay can power on the driving motor after a set time, and the combination sleeve is prevented from being meshed with the first spline wheel under the condition of relative rotation.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top cross-sectional view of the present invention;
FIG. 3 is a front cross-sectional view of the present invention;
FIG. 4 is an enlarged view of FIG. 3 at point A;
FIG. 5 is a schematic diagram of an interrupt unit;
fig. 6 is a front view of the interruption unit;
in the figure: 1. a box body; 2. a driven gear; 3. a driven shaft; 4. a drive shaft; 5. a drive gear; 6. an interrupt unit; 7. a control unit; 701. a drive motor; 601. a spline wheel I; 602. a spline wheel II; 603. a coupling sleeve; 6021. a control slot; 6022. a control loop; 6023. a control lever; 702. a control box; 60221. a magnet; 703. an electromagnet; 704. a spring; 705. a time delay relay.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 6, the present invention provides a reversing speed-changing reducer, which has the following technical scheme:
a reversing variable speed reducer comprising:
the box body 1 is internally provided with a driven gear 2;
the driven shaft 3 is rotationally connected to the box body 1, one end of the driven shaft 3 extends into the box body 1, and the driven gear 2 is fixedly connected to one end of the driven shaft 3 in the box body 1;
the driving shaft 4 is rotatably connected to the box body 1, and one end of the driving shaft 4 extends into the box body 1;
the driving gear 5 is arranged in the box body 1 and is meshed with the driven gear 2;
further comprising:
an interruption unit 6, the interruption unit 6 being provided on the drive shaft 4;
the control unit 7, the interrupt unit 6 is controlled by the control unit 7, the control unit 7 is internally provided with a driving motor 701;
the driving gear 5 is rotatably connected with one end of the driving shaft 4 in the box body 1;
the existing reversing speed-changing reducer comprises a bevel gear reducer, wherein a group of bevel gears are meshed in a box body 1, so that a driving shaft 4 supplies torque to driven shafts 3 in different directions to achieve the purpose of reversing, however, if the driven shafts 3 are connected to a mechanism (such as a flywheel) with large rotational inertia, when a driving motor 701 stops, the driven shafts 3 can continuously keep rotating due to large inertia, and damping in the driving motor 701 can be damaged after a long time, therefore, an interruption unit 6 is arranged, and after the driving motor 701 stops rotating, the interruption unit 6 is started, so that the connection between the driving shaft 4 and a driving gear 5 is disconnected, the driven shafts 3 idle, and the purpose of protecting the driving motor 701 is achieved.
2-6, the interrupting unit 6 includes a spline wheel one 601, the spline wheel one 601 is fixedly connected to the large end of the driving gear 5, a spline wheel two 602 is fixedly connected to the shaft body of the driving shaft 4, a gap is provided between the spline wheel two 602 and the spline wheel one 601, a coupling sleeve 603 is engaged at the spline of the spline wheel two 602, and the coupling sleeve 603 can slide relative to the spline wheel two 602.
When the device is started, the combination sleeve 603 slides into the first combination sleeve 603 from the second spline wheel 602, so that when the combination sleeve 603 is simultaneously meshed with the first spline wheel 601 and the second spline wheel 602, the torque generated by the driving motor 701 is transmitted into the first spline wheel 601 through the combination sleeve 603 by the second spline wheel 602, the driving gear 5 is driven to rotate, when the device is disconnected, the combination sleeve 603 leaves from the first spline wheel 601, the transmission connection between the first spline wheel 601 and the driving shaft 4 is interrupted, the driven shaft 3 idles, and the purpose of protecting the driving motor 701 is achieved.
Referring to fig. 5-6, an inner race and an outer race of coupling sleeve 603 are rotationally coupled as an embodiment of the present invention.
The inner ring of the coupling sleeve 603 is engaged with the second spline wheel 602, so that the outer ring of the coupling sleeve 603 does not rotate with the rotation of the second spline wheel 602, thereby facilitating the control of the radial sliding of the coupling sleeve 603 along the second spline wheel 602.
2-6, a control groove 6021 is formed on the outer ring of the coupling sleeve 603, a control ring 6022 is fixedly connected inside the control groove 6021, a control rod 6023 is fixedly connected to the outer ring of the control ring 6022, and the other end of the control rod 6023 extends into the control unit 7.
The control rod 6023 controls the radial sliding of the coupling sleeve 603 along the second spline wheel 602 by controlling the movement of the control ring 6022, that is, the disconnection or engagement of the coupling sleeve 603 with the first spline wheel 601.
3-4, the control unit 7 comprises a control box 702, a driving motor 701 is fixedly connected in the control box 702, an output end of the driving motor 701 is fixedly connected with one end of a driving shaft 4, one end of a control rod 6023 far away from a control ring 6022 extends into the control box 702, one end of the control rod 6023 extending into the control box 702 is fixedly connected with a magnet 60221, an electromagnet 703 is fixedly connected in the box body 1, the electromagnet 703 is arranged at one side of the control box 702 where the control rod 6023 extends, and the electromagnet 703 is opposite to the magnet 60221. The control rod 6023 is fixedly connected with a spring 704 at one side in the control box 702, and the other end of the spring 704 is fixedly connected with the side in the control box 702, into which the control rod 6023 extends. The width of the coupling sleeve 603 is larger than the gap between the second spline wheel 602 and the first spline wheel 601, the distance between the electromagnet 703 and the magnet 60221 is smaller than the distance between the control ring 6022 and the large end of the driving gear 5, and the attraction force of the electromagnet 703 to the magnet 60221 when being started is larger than the elastic force of the spring 704 when being contracted.
In this embodiment, the driving motor 701 controls the rotation and stop of the driving shaft 4, when the apparatus is powered on, the electromagnet 703 generates magnetic force, because the attraction force of the electromagnet 703 on the magnet 60221 is greater than the elastic force of the spring 704 when the spring 704 contracts, the magnet 60221 is attracted by the electromagnet 703, so that the control rod 6023 moves to the left as shown in the figure, thereby driving the coupling sleeve 603 to move toward the first spline wheel 601, because the width of the coupling sleeve 603 is greater than the gap between the second spline wheel 602 and the first spline wheel 601, the coupling sleeve 603 can simultaneously mesh with the first spline wheel 601 and the second spline wheel 602, at this time, the driving shaft 4 rotates the driving gear 5 through the coupling sleeve 603, because the distance between the electromagnet 703 and the magnet 60221 is smaller than the distance between the control ring 6022 and the large end of the driving gear 5, so that the coupling sleeve 603 does not contact with the large end of the driving gear 5, thereby preventing the coupling sleeve 603 from being damaged due to collision with the driving gear 5, when the motor is powered off, the electromagnet is powered, the control rod 3 moves to the right under the action of the spring 704, and the driving shaft 603 is in this time, so that the driving shaft 701 is in idle state, the driving shaft 603 is disconnected, and the driving shaft 701 is disconnected from the driving motor 6023.
Referring to fig. 5, as an embodiment of the present invention, one end of the spline of the first spline wheel 601, which is close to the coupling sleeve 603, is provided with a tapered surface, and one end of the spline of the coupling sleeve 603, which is close to the first spline wheel 601, is provided with a tapered surface identical to the tapered surface of the first spline wheel 601.
In this embodiment, the coupling sleeve 603 moves radially on the spline wheel two 602 to disconnect and engage with the spline wheel one 601, so that a conical surface is formed at one end of the spline on the spline wheel one 601, which is close to the coupling sleeve 603, and a conical surface identical to the spline wheel one 601 is formed at one end of the spline on the coupling sleeve 603, which is close to the spline wheel, so as to ensure accuracy when the coupling sleeve 603 is engaged with the spline wheel, when the coupling sleeve 603 is engaged with the spline wheel one 601, the conical surfaces on the splines contact first, so that the splines can enter the key grooves along the inclined surfaces on the conical surfaces, and thereby reducing the situation of engagement failure.
Referring to fig. 4, a delay relay 705 is fixedly connected in a control box 702, the delay relay 705 is electrically connected to a driving motor 701, and an electromagnet 703 is electrically connected to the delay relay 705.
In this embodiment, if the coupling sleeve 603 is engaged with the first spline wheel 601 in the relative rotation condition, the engagement efficiency may be affected, and the spline may be easily damaged, so when starting the apparatus, the electromagnet 703 needs to be powered on first, so that the control rod 6023 moves to the left as shown in the figure, thereby driving the coupling sleeve 603 to engage with the first spline wheel 601, and when starting the driving motor 701 to rotate the driving shaft 4, the delay relay 705 is provided, when the apparatus is powered on, the current passes through the electromagnet 703 first, so that the electromagnet 703 is powered on and then passes through the delay relay 705, and the delay relay 705 powers on the driving motor 701 after the set time, thereby preventing the coupling sleeve 603 from engaging with the first spline wheel 601 in the relative rotation condition.
According to one embodiment of the invention, the first spline wheel 601, the second spline wheel 602 and the coupling sleeve 603 are all made of wear-resistant and high-temperature-resistant metal materials, and the tolerance grades of the matching positions are all above IT 6.
In this embodiment, the coupling sleeve 603 moves radially on the spline wheel two 602, so that the spline wheel one 601 is disconnected and engaged, and when the spline wheel one 601 is in contact with the coupling sleeve, relative movement generates friction, and the friction generates heat, so that the spline wheel one 601, the spline wheel two 602 and the coupling sleeve 603 are all made of wear-resistant and high-temperature-resistant metal materials, such as forged steel and cast steel, and can be subjected to surface heat treatment to improve wear resistance and high-temperature resistance, and tolerance levels above an IT6 level are adopted to ensure accuracy of engagement and reduce jerk during engagement.
The working principle is as follows: when the device is powered on, current firstly passes through the electromagnet 703, the electromagnet 703 is powered on, magnetic force is generated by the electromagnet 703, the magnet 60221 is attracted by the electromagnet 703, the control rod 6023 moves to the left side as shown in the figure, so that the coupling sleeve 603 moves to the first spline wheel 601, because the width of the coupling sleeve 603 is larger than the gap between the second spline wheel 602 and the first spline wheel 601, the coupling sleeve 603 can be simultaneously meshed with the first spline wheel 601 and the second spline wheel 602, the control unit 7 slides the coupling sleeve 603 from the second spline wheel 602 into the first spline wheel 601, so that the coupling sleeve 603 is simultaneously meshed with the first spline wheel 601 and the second spline wheel 602, the delay relay 705 enables the driving motor 701 to be powered on after a set time, torque generated by the driving motor 701 is transmitted to the first spline wheel 601 through the coupling sleeve 603 by the second spline wheel 602, so that the driving gear 5 rotates, the driving gear 5 rotates to drive the driven gear 2 to rotate, so that the driving shaft 4 rotates, when the motor stops, the electromagnet 6023 moves to the right side of the spring 704, and then the control rod 6023 moves to the original position as shown in the figure, so that the idle rotation of the driving shaft 603 is stopped, and the control rod 6023, so that the control rod 703 and the control rod 703 stops.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A reversing variable speed reducer comprising:
the gear box comprises a box body (1), wherein a driven gear (2) is arranged in the box body (1);
the driven shaft (3) is rotatably connected to the box body (1), one end of the driven shaft (3) extends into the box body (1), and the driven gear (2) is fixedly connected to one end, in the box body (1), of the driven shaft (3);
the driving shaft (4), the said driving shaft (4) is connected to the container body (1) rotatably, and one end of the driving shaft (4) stretches into the container body (1);
the driving gear (5) is arranged inside the box body (1) and meshed with the driven gear (2);
it is characterized by also comprising:
an interruption unit (6), the interruption unit (6) being provided on the drive shaft (4);
the control unit (7), the interruption unit (6) is controlled by the control unit (7), and a driving motor (701) is arranged in the control unit (7);
the driving gear (5) is rotatably connected to one end of the driving shaft (4) in the box body (1).
2. The reversing variable speed reducer of claim 1, wherein: the interruption unit (6) comprises a first spline wheel (601), the first spline wheel (601) is fixedly connected to the large end of the driving gear (5), a second spline wheel (602) is fixedly connected to the shaft body of the driving shaft (4), the spline specifications of the first spline wheel (601) and the second spline wheel (602) are consistent, a gap is reserved between the second spline wheel (602) and the first spline wheel (601), a combination sleeve (603) is meshed at the spline of the second spline wheel (602), a spline which is matched with the first spline wheel (601) and the second spline wheel (602) is arranged on an inner ring of the combination sleeve (603), and the combination sleeve (603) can slide relative to the second spline wheel (602).
3. The reversing variable speed reducer according to claim 2, characterized in that: the inner ring and the outer ring of the combination sleeve (603) are rotationally connected.
4. The reversing variable speed reducer of claim 2, wherein: the outer ring of the combination sleeve (603) is provided with a control groove (6021), a control ring (6022) is fixedly connected in the control groove (6021), a control rod (6023) is fixedly connected to the outer ring of the control ring (6022), and the other end of the control rod (6023) extends into the control unit (7).
5. The reversing variable speed reducer according to claim 4, wherein: the control unit (7) comprises a control box (702), a driving motor (701) is fixedly connected in the control box (702), the output end of the driving motor (701) is fixedly connected with one end of a driving shaft (4), one end, far away from a control ring (6022), of the control rod (6023) extends into the control box (702), one end, far away from the control ring (6022), of the control rod extends into the control box (702), a magnet (60221) is fixedly connected with one end of the control rod extending into the control box (702), an electromagnet (703) is fixedly connected in the box body (1), the electromagnet (703) is arranged on one side, extending into the control rod (6023), of the control box (702), and the electromagnet (703) is opposite to the magnet (60221).
6. The reversing variable speed reducer according to claim 5, wherein: one side of the control rod (6023) in the control box (702) is fixedly connected with a spring (704), and the other end of the spring (704) is fixedly connected to the side of the control rod (6023) in the control box (702) extending into the control box.
7. The reversing variable speed reducer of claim 6, wherein: the width of the combination sleeve (603) is larger than the gap between the second spline wheel (602) and the first spline wheel (601), the distance between the electromagnet (703) and the magnet (60221) is smaller than the distance between the control ring (6022) and the large end of the driving gear (5), and the attraction force of the electromagnet (703) on the magnet (60221) when being started is larger than the elastic force of the spring (704) when being contracted.
8. The reversing variable speed reducer of claim 2, wherein: one end, close to the combining sleeve (603), of the spline on the spline wheel I (601) is provided with a conical surface, and one end, close to the spline wheel, of the spline on the combining sleeve (603) is provided with a conical surface identical to that of the spline wheel I (601).
9. The reversing variable speed reducer according to claim 5, wherein: the control box (702) is internally and fixedly connected with a time delay relay (705), the time delay relay (705) is electrically connected with the driving motor (701), and the electromagnet (703) is electrically connected with the time delay relay (705).
10. The reversing variable speed reducer according to claim 2, characterized in that: the spline wheel I (601), the spline wheel II (602) and the combination sleeve (603) are all made of wear-resistant and high-temperature-resistant metal materials, and tolerance grades at matching positions are all more than IT 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210829614.5A CN115242029A (en) | 2022-07-14 | 2022-07-14 | Reversing speed-changing speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210829614.5A CN115242029A (en) | 2022-07-14 | 2022-07-14 | Reversing speed-changing speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115242029A true CN115242029A (en) | 2022-10-25 |
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ID=83673484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210829614.5A Pending CN115242029A (en) | 2022-07-14 | 2022-07-14 | Reversing speed-changing speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115242029A (en) |
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2022
- 2022-07-14 CN CN202210829614.5A patent/CN115242029A/en active Pending
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