CN219388547U - Transmission mechanism with overload protection - Google Patents
Transmission mechanism with overload protection Download PDFInfo
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- CN219388547U CN219388547U CN202320570829.XU CN202320570829U CN219388547U CN 219388547 U CN219388547 U CN 219388547U CN 202320570829 U CN202320570829 U CN 202320570829U CN 219388547 U CN219388547 U CN 219388547U
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- transmission mechanism
- steel ball
- overload protection
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 37
- 230000007246 mechanism Effects 0.000 title claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims description 57
- 239000010959 steel Substances 0.000 claims description 57
- 238000003825 pressing Methods 0.000 claims description 31
- 230000009471 action Effects 0.000 description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 241000208125 Nicotiana Species 0.000 description 2
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
The utility model provides a transmission mechanism with overload protection. The transmission mechanism with overload protection comprises a first gear and a second gear which are meshed with each other, wherein the second gear is sleeved on a second shaft, and a pressure structure is arranged on the second shaft to press the second gear towards the second shaft; when the second shaft is overloaded, the second shaft is stressed to spring the pressure structure, so that the second gear is movably connected with the second shaft. The utility model can automatically separate when the transmission mechanism is overloaded, thereby avoiding the damage of the transmission mechanism.
Description
Technical Field
The utility model relates to the field of mechanical transmission, in particular to a transmission mechanism with overload protection.
Background
A transmission is a component or mechanism that transfers power from one part of a machine to another, causing the machine or machine component to move or operate. The tobacco cutter, tobacco shred processing equipment, cigarette machine, tipping machine, packaging machine and the like which are utilized in the cigarette production process all need a transmission mechanism to realize the processing action. However, when the load is too large, the transmission mechanism cannot effectively drive the machine to operate, but the power source is still continuously outputting power, and the transmission mechanism can be damaged if the machine is not stopped in time.
The prior art CN201934611U discloses a gear transmission structure with overload protection function, which transmits torque by generating friction force between two friction plates arranged on a gear, and when the output torque exceeds the friction force between the two friction plates, slipping occurs between the two friction plates, so that the gear idles, and damage to the gear is avoided. However, the transmission mechanism transmits torque through friction between friction plates, a great part of energy is consumed on friction in the running process, the friction plates are fast in loss, and the transmission mechanism can work normally only by replacing the friction plates regularly.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, and provides a transmission mechanism with overload protection, which can be automatically separated when the transmission mechanism is overloaded, so that the transmission mechanism is prevented from being damaged.
The utility model provides a transmission mechanism with overload protection, which comprises a first gear and a second gear which are meshed with each other, wherein the second gear is sleeved on a second shaft, and a pressure structure is arranged on the second shaft to press the second gear towards the second shaft; when the second shaft is overloaded, the second shaft is stressed to spring the pressure structure, so that the second gear is movably connected with the second shaft.
The utility model has the preferable technical scheme that: and a positioning shaft shoulder is arranged on the second shaft, and the pressure structure is connected with the end face of the second gear so as to compress the second gear to the positioning shaft shoulder.
The utility model has the preferable technical scheme that: the locating shaft shoulder faces the end face of the second gear, a limiting groove is formed in the end face of the locating shaft shoulder, a guide hole is formed in the second gear, a steel ball is arranged in the guide hole, and the second shaft is connected with the second gear through the steel ball.
The steel balls are simultaneously positioned in the guide holes and the limiting grooves, and when the second gear rotates, the steel balls positioned in the limiting grooves synchronously rotate, so that the second shaft is driven to rotate, and power transmission is realized.
The utility model has the preferable technical scheme that: the limiting groove is a cambered surface groove, the outer spherical surface of the steel ball can be attached to the limiting groove, the diameter of the guide hole is the same as that of the steel ball, so that the steel ball can move in the guide hole after being attached to the inner wall of the guide hole, and the shaking and the collision of the inner wall of the guide hole in the moving process of the steel ball are avoided, so that the impact of a transmission structure is caused in the transmission process.
The utility model has the preferable technical scheme that: the pressure structure comprises a pressing plate, a pressure spring and a locking nut which are sleeved on the second shaft in sequence, and the pressing plate is connected with the end face of the second gear.
The utility model has the preferable technical scheme that: the guide hole is a through hole, the depth of the guide hole when being communicated with the limit groove is equal to the diameter of the steel ball, and the pressing plate covers the guide hole.
When the pressing plate pushes the second gear, the steel ball can be pushed into the limiting groove, so that the steel ball is attached to the inner wall of the limiting groove, and meanwhile, the steel ball is limited in the guide hole; when the second shaft is overloaded, the second shaft shoulder and the second gear rotate relatively, the steel balls are synchronously extruded into the guide holes after being separated from the limit grooves by torque, and the steel balls enter the guide holes to push the pressing plate which is separated from the second gear.
The utility model has the preferable technical scheme that: the compression spring is characterized by further comprising a bearing arranged between the pressing plate and the compression spring, and the end part of the compression spring is pressed on the bearing. The second gear rotates when transmitting power, and the bearing can reduce the relative friction between the end part of the pressure spring and the pressure plate, so that the loss of the pressure spring is reduced.
The utility model has the preferable technical scheme that: the device also comprises sensors arranged along the axis direction of the second shaft, wherein the sensors are arranged at intervals on one side of the pressing plate, which is connected with the pressure spring, and are used for detecting whether the pressing plate is ejected, namely, whether an overload condition occurs in the transmission mechanism.
The utility model has the preferable technical scheme that: the first gear is fixedly arranged on the first shaft, the first shaft is externally connected with a driving motor, and the sensor is electrically connected with the driving motor. When the transmission structure is overloaded, the sensor timely controls the driving motor to stop, so that the damage to other parts caused by continuous action of the driving motor in an overload state is prevented.
The utility model has the preferable technical scheme that: and a third gear is further arranged on the second shaft and fixedly arranged on the second shaft.
The transmission mechanism with overload protection has the following beneficial effects:
1. a guide hole and a limit groove are respectively arranged on the second gear and the positioning shaft shoulder, a steel ball is arranged in the guide hole, and the second shaft and the second gear synchronously rotate by utilizing the driving power of the steel ball; when the second shaft is overloaded, the steel ball is ejected out of the limit groove by torque, and the limit between the second shaft and the second gear disappears, so that relative sliding occurs, the second gear idles, and overload work of the second gear is avoided;
2. the second gear is pressed towards the second shaft by the pressing plate and the pressure spring, and meanwhile, the steel ball is limited in the guide hole, so that the second shaft can be driven by the second gear, and power transmission is ensured;
3. the side edge of the pressing plate is provided with a sensor which is electrically connected with the driving motor; when in overload, the pressing plate is jacked up by the steel ball to pop up to generate displacement, and the sensor is used for detecting the displacement of the pressing plate so as to control the driving motor to stop when in overload, thereby ensuring the operation safety of the transmission structure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model. In the drawings, like reference numerals are used to identify like elements. The drawings, which are included in the description, illustrate some, but not all embodiments of the utility model. Other figures can be derived from these figures by one of ordinary skill in the art without undue effort.
FIG. 1 is a schematic diagram of an embodiment of the present utility model.
In the figure: 1. a driving motor; 2. a first shaft; 3. a first gear; 4. a second gear; 41. a guide hole; 5. positioning a shaft shoulder; 51. a limit groove; 6. a pressing plate; 7. a steel ball; 8. a pressure spring; 9. a lock nut; 10. a second shaft; 11. a third gear; 12. a bearing; 13. a sensor.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be arbitrarily combined with each other.
Please refer to fig. 1. The utility model provides a drive mechanism with overload protection, includes intermeshing's first gear 3, second gear 4, and second gear 4 sets up on second shaft 10, is provided with clamp plate 6 structure on the second shaft 10 and is used for compressing tightly second gear 4 second shaft 10.
The first gear 3 is fixedly sleeved on the first shaft 2, and the first shaft 2 is connected with the driving motor 1; the driving motor 1 can be started to directly drive the first gear 3 to rotate. In this embodiment, the first shaft 2 is an output shaft of the drive motor 1. The second gear 4 is meshed with the first gear 3, the first gear 3 rotates to drive the second gear 4 to rotate, and the second gear 4 is arranged on the second shaft 10 in an empty mode. It should be noted that, the second gear 4 being sleeved on the second shaft 10 does not indicate that significant circumferential wobble occurs between the second gear 4 and the second shaft 10, but that clearance fit exists between the second gear 4 and the second shaft 10, and relative rotation can occur between the two.
The second gear 4 is provided with a guide hole 41 penetrating through the thickness direction of the second gear 4, the second shaft 10 is provided with a positioning shaft shoulder 5, the end face of the positioning shaft shoulder 5 facing the second gear 4 is provided with limiting grooves 51, and the number of the limiting grooves 51 is the same as that of the guide holes 41. The steel ball 7 is arranged in the guide hole 41, when the guide hole 41 is aligned with the limit groove 51, the steel ball 7 is positioned in the guide hole 41 and the limit groove 51 at the same time, and at the moment, the second shaft 10 can be driven to rotate by the transmission of the second gear 4, so that power is transmitted.
Preferably, the inside of the limiting groove 51 is an arc surface, and the arc surface has the same size as the outer spherical surface of the steel ball 7, so that when the steel ball 7 is positioned in the limiting groove 51, the steel ball 7 can be attached to the limiting groove 51, and the steel ball 7 can stably drive the second shaft 10 to rotate, so that the steel ball 7 is prevented from shaking in the limiting groove 51.
The depth of the limiting groove 51 is adaptively adjusted according to the load of the second shaft 10. Namely, when the rated load of the second shaft 10 is larger, the deeper limit groove 51 can be selected to be matched with the steel ball 7, so that the situation that the rated load is not reached yet, and the steel ball 7 is separated from the limit groove 51 due to overlarge torque is avoided. It should be noted that the depth of the limiting groove 51 should not be greater than half the diameter of the steel ball 7, so as to avoid that the steel ball 7 cannot enter the limiting groove 51 through the guiding hole 41.
Preferably, the diameter of the guide hole 41 is the same as that of the steel ball 7, or the diameter of the guide hole 41 is slightly larger than that of the steel ball 7, so that the steel ball 7 can smoothly move in the guide hole 41, and the steel ball 7 cannot shake in the guide hole 41 and collide with the inner wall of the guide hole 41 when the guide hole 41 drives the steel ball 7 to rotate.
The second gear 4 is pressed towards the positioning shaft shoulder 5 through the pressure structure, so that the steel ball 7 is pressed between the positioning shaft shoulder 5 and the second gear 4. The pressure structure comprises a pressing plate 6 sleeved on a second shaft 10, a pressure spring 8 and a lock nut 9, wherein the pressing plate 6 is pressed on the end face of the second gear 4, the lock nut 9 is arranged on the second shaft 10 and used for limiting the positions of the pressure spring 8 and the pressing plate 6, the pressure spring 8 is arranged between the pressing plate 6 and the lock nut 9, and the pressing plate 6 can be in contact with the second gear 4 under the action of the pressure spring 8, so that the second gear 4 is pressed towards the direction of the positioning shaft shoulder 5.
The press plate 6 is sized to completely cover all of the guide holes 41 to prevent the steel balls 7 from backing out of the guide holes 41. Preferably, when the guide hole 41 is communicated with the limit groove 51, the depth of the communication is the same as the diameter of the steel ball 7; that is, when the pressing plate 6 presses the second gear 4, the steel ball 7 is attached to the limiting groove 51, meanwhile, the steel ball 7 is tangent to the pressing plate 6, the steel ball 7 is limited in the guiding hole 41 and the limiting groove 51 by the pressing plate 6, the steel ball 7 is prevented from falling out of the guiding hole 41, connection between the positioning shaft shoulder 5 and the second gear 4 is ensured, the second gear 4 rotates to drive the steel ball 7 to move, and then the second shaft 10 is driven to rotate, and power is output.
Preferably, a bearing 12 is arranged between the pressure spring 8 and the pressure plate 6, the end part of the pressure spring 8 is pressed on the bearing 12, the pressure spring 8 presses the pressure plate 6 through the bearing 12, in the embodiment, the bearing 12 is a radial thrust bearing, when the second gear 4 rotates, the pressure plate 6 also rotates along with the bearing 12, and the relative rotation between the end part of the pressure spring 8 and the pressure plate 6 can be effectively reduced by the bearing 12, so that the loss of the end part of the pressure spring 8 is reduced, and the service life of the pressure structure is prolonged.
The working process of the utility model is as follows: the driving motor 1 is started, the first gear 3 drives the second gear 4 to rotate, the steel ball 7 is positioned in the guide hole 41 and the limit groove 51 at the same time under the thrust action of the pressing plate 6, the size limit of the guide hole 41 and the size limit groove 51, the second gear 4 is relatively fixed with the second shaft 10 through the steel ball 7, and the power is output by the driving motor 1 through the second shaft 10; when the second shaft 10 is overloaded, the torque borne by the steel ball 7 is too large, so that the steel ball 7 is separated from the limit groove 51, and the steel ball 7 enters the guide hole 41 and moves in the guide hole 41, so that the pressing plate 6 is jacked up; due to the fact that the limit of the pressing plate 6 and the steel ball 7 is absent, the second gear 4 cannot drive the second shaft 10 to rotate through the steel ball 7, so that relative rotation occurs between the second gear 4 and the second shaft 10, the second gear 4 idles, and the problem of structural damage possibly caused by overload of the second shaft 10 is avoided.
Preferably, a sensor 13 is arranged along the axial direction of the second shaft 10, the sensor 13 is arranged at one side of the pressing plate 6 connected with the pressure spring 8 at intervals, and the sensor 13 is electrically connected with the driving motor 1; when the pressing plate 6 is jacked by the steel ball 7 to displace, the sensor 13 can sense the displacement of the pressing plate 6, so that a signal is sent to control the driving motor 1 to stop, and further the damage to other parts caused by the continuous action of the driving motor 1 in an overload state is prevented. In this embodiment, the sensor 13 is a photoelectric sensor, and it should be noted that the electrical connection between the sensor 13 and the driving motor 1 and the control of the driving motor 1 by the sensor 13 are common technical means in circuit control, so will not be described in detail here.
In this embodiment, a third gear 11 is further fixedly disposed on the second shaft 10, and the second shaft 10 can drive power and drive external equipment to operate through the third gear 11.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting. Although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. The transmission mechanism with overload protection is characterized by comprising a first gear (3) and a second gear (4) which are meshed with each other, wherein the second gear (4) is sleeved on a second shaft (10), and a pressure structure is arranged on the second shaft (10) to press the second gear (4) towards the second shaft (10); when the second shaft (10) is overloaded, the second shaft (10) is stressed to spring the pressure structure, so that the second gear (4) is movably connected with the second shaft (10).
2. A transmission mechanism with overload protection according to claim 1, characterized in that a positioning shoulder (5) is arranged on the second shaft (10), and the pressure structure is connected with the end face of the second gear (4) so as to press the second gear (4) against the positioning shoulder (5).
3. A transmission mechanism with overload protection according to claim 2, characterized in that the end face of the positioning shaft shoulder (5) facing the second gear (4) is provided with a limit groove (51), the second gear (4) is provided with a guide hole (41), a steel ball (7) is arranged in the guide hole (41), and the second shaft (10) is connected with the second gear (4) through the steel ball (7).
4. A transmission mechanism with overload protection according to claim 3, wherein the limit groove (51) is a cambered surface groove, the outer spherical surface of the steel ball (7) can be attached to the limit groove (51), and the diameter of the guide hole (41) is the same as the diameter of the steel ball (7).
5. A transmission mechanism with overload protection according to claim 3, wherein the pressure structure comprises a pressing plate (6), a pressure spring (8) and a locking nut (9) which are sleeved on the second shaft (10) in sequence, and the pressing plate (6) is connected with the end face of the second gear (4).
6. The transmission mechanism with overload protection according to claim 5, wherein the guide hole (41) is a through hole, the depth of the guide hole (41) when the guide hole is communicated with the limit groove (51) is equal to the diameter of the steel ball (7), and the pressing plate (6) is covered on the guide hole (41).
7. A transmission with overload protection according to claim 5, further comprising a bearing (12) arranged between the pressure plate (6) and the pressure spring (8), the pressure spring (8) being pressed at its end against the bearing (12).
8. A transmission mechanism with overload protection according to claim 5, further comprising a sensor (13) arranged along the axial direction of the second shaft (10), wherein the sensor (13) is arranged at intervals on the side of the pressing plate (6) connected with the pressure spring (8).
9. The transmission mechanism with overload protection according to claim 8, wherein the first gear (3) is fixedly arranged on the first shaft (2), the first shaft (2) is externally connected with the driving motor (1), and the sensor (13) is electrically connected with the driving motor (1).
10. A transmission mechanism with overload protection according to claim 1, characterized in that a third gear (11) is further arranged on the second shaft (10), the third gear (11) being fixedly arranged on the second shaft (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320570829.XU CN219388547U (en) | 2023-03-22 | 2023-03-22 | Transmission mechanism with overload protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320570829.XU CN219388547U (en) | 2023-03-22 | 2023-03-22 | Transmission mechanism with overload protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219388547U true CN219388547U (en) | 2023-07-21 |
Family
ID=87189235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320570829.XU Active CN219388547U (en) | 2023-03-22 | 2023-03-22 | Transmission mechanism with overload protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219388547U (en) |
-
2023
- 2023-03-22 CN CN202320570829.XU patent/CN219388547U/en active Active
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