CN115899183A - Three-gear speed change mechanism of reduction gearbox - Google Patents
Three-gear speed change mechanism of reduction gearbox Download PDFInfo
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- CN115899183A CN115899183A CN202211335724.2A CN202211335724A CN115899183A CN 115899183 A CN115899183 A CN 115899183A CN 202211335724 A CN202211335724 A CN 202211335724A CN 115899183 A CN115899183 A CN 115899183A
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Abstract
The invention relates to the technical field of reduction boxes, in particular to a three-gear speed change mechanism of a reduction box, which comprises a spline shaft, wherein an output gear is fixedly arranged on the spline shaft, a spline sleeve is arranged on the spline shaft, a gear shift sliding sleeve is arranged on the outer side of the spline sleeve in an axial sliding manner, a first-gear speed change gear set, a second-gear speed change gear set and a third-gear speed change gear set are also sleeved on the spline shaft in an idling manner, and the spline sleeve slides on the spline sleeve through the gear shift sliding sleeve to be respectively matched with the first-gear speed change gear set, the second-gear speed change gear set and the third-gear speed change gear set in a power transmission manner, so that 3 power transmission working modes are respectively formed. The gear shifting structure is simple, the gear shifting sliding sleeve can be switched only by driving the gear shifting sliding sleeve to move through the single shifting fork, the operation is simple and convenient, the number of used transmission assemblies is small, the production cost and the later maintenance cost are reduced, the assembly speed of the reduction gearbox is increased, and the stability and the reliability of the speed reducer are improved; the friction loss energy is less in use, and the energy utilization rate is improved.
Description
Technical Field
The invention relates to the technical field of reduction boxes, in particular to a three-gear speed change mechanism of a reduction box.
Background
The reduction gearbox is also called as a speed reducer or a speed reducer, works according to the principle that a prime motor is connected with the reduction gearbox which is connected with a working machine, and is power transmission equipment.
At present the reducing gear box is first gear variable speed and second gear variable speed mostly, if need realize the switching of many gears, just need many transmission shafts and many shifting fork axles to switch, transmission structure is complicated like this, practical drive assembly is many, not only caused the manufacturing cost of reducing gear box to increase like this, the assembly degree of difficulty of reducing gear box has still been improved, and because the inside complex structure of reducing gear box, also can influence the stability and the reliability of reducing gear box, in addition because transmission assembly is more, the kinetic energy of loss is also more in the transmission process, the waste of energy has been caused, and the transmission assembly spoilage is also higher, the maintenance cost in later stage is great.
Disclosure of Invention
The invention mainly aims to provide a three-gear speed change mechanism of a reduction gearbox, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
a three-gear speed change mechanism of a reduction gearbox comprises a spline shaft, wherein an output gear is fixedly arranged on the spline shaft, a spline housing is arranged on the spline shaft, a gear shift sliding sleeve is arranged on the outer side of the spline housing in an axial sliding mode, a first-gear speed change gear set, a second-gear speed change gear set and a third-gear speed change gear set are further sleeved on the spline shaft in an idle-running mode, and the spline housing slides on the spline housing through the gear shift sliding sleeve to be matched with the first-gear speed change gear set, the second-gear speed change gear set and the third-gear speed change gear set in a power transmission mode respectively, so that 3 power transmission working modes are formed respectively.
Furthermore, a gear shifting key groove is formed in the outer side of the spline sleeve, gear shifting key teeth matched with the gear shifting key groove are arranged in the gear shifting sliding sleeve, the gear shifting key teeth are arranged in the positions, close to the two ends, in the gear shifting sliding sleeve, and gaps are reserved between the gear shifting key teeth at the two ends.
Furthermore, the first-gear speed change gear set is located on one side of the spline housing, the first-gear speed change gear set comprises a first-gear input gear and a first-gear transmission wheel, the first-gear transmission wheel is fixedly arranged on one side face, close to the spline housing, of the first-gear input gear and is coaxially arranged, and a first-gear key groove matched with the gear shift teeth on the gear shift sliding sleeve is formed in the first-gear transmission wheel.
Furthermore, the second-gear speed change gear set is located on the other side, corresponding to the first-gear speed change gear set, of the spline housing, and comprises a second-gear input gear, a second-gear transmission wheel and a connecting sleeve used for connecting the second-gear input gear and the second-gear transmission wheel, the second-gear input gear, the second-gear transmission wheel and the connecting sleeve are coaxially arranged, and a second-gear key groove matched with the gear shifting healthy teeth on the gear shifting sliding sleeve is arranged on the side face of the second-gear transmission wheel.
Furthermore, the third-gear speed-changing gear set comprises a third-gear input gear and a third-gear transmission wheel, the third-gear input gear and the third-gear transmission wheel are positioned between the second-gear input gear and the second-gear transmission wheel, the third-gear input gear and the third-gear transmission wheel are sleeved on the outer side wall of the connecting sleeve and can freely rotate, the third-gear transmission wheel is fixedly arranged on one side of the third-gear input gear close to the spline sleeve, and a third-gear key groove matched with the gear-shifting tooth-strengthening on the gear-shifting sliding sleeve is arranged on the side surface of the third-gear transmission wheel.
Furthermore, a slot is formed in the outer side face of the gear shift sliding sleeve, and a gear shift fork assembly for shifting the gear shift sliding sleeve to move is clamped in the slot.
Furthermore, one end of the connecting sleeve is fixedly connected with the second-gear driving wheel, and the other end of the connecting sleeve is in splined connection with the second-gear input gear.
Furthermore, the length of a gap between the gear shifting key teeth at two ends of the gear shifting sliding sleeve is larger than or equal to the thickness of the second-gear transmission wheel, and when the gear shifting sliding sleeve slides to abut against the third-gear input gear, the position of the gap corresponds to the position of the second-gear transmission wheel.
Furthermore, the length of the gear shifting sliding sleeve is greater than the sum of the thicknesses of the second-gear transmission wheel and the third-gear transmission wheel, and the length of the gear shifting sliding sleeve is greater than the thickness of the first-gear transmission wheel.
Compared with the prior art, the invention has the following beneficial effects:
(1) Through the slip of gear shift sliding sleeve for the spline housing forms 3 different gear power transmission mode respectively with first gear change gear group, second gear change gear group and third gear change gear group power transmission cooperation, the gear shift simple structure of this scheme, only needs to drive the removal of gear shift sliding sleeve through trading single shift fork and can accomplish the switching, easy operation, convenient.
(2) The used transmission components are few, the production cost and the later maintenance cost are reduced, the assembly speed of the reduction gearbox is increased, and the stability and the reliability of the speed reducer are improved.
(3) The transmission structure is simple, the number of transmission components is small, the friction loss energy is small in use, and the energy utilization rate is improved.
Drawings
FIG. 1 is a schematic view of a spline shaft mounting structure of a three-speed change mechanism of a reduction gearbox according to the present invention;
FIG. 2 is a schematic view of the overall structure of a three-speed gear shifting mechanism of a reduction gearbox according to the present invention;
FIG. 3 isbase:Sub>A sectional view A-A of FIG. 2;
FIG. 4 is a structural diagram of a first gear state of a three-gear speed change mechanism of a reduction gearbox according to the present invention;
FIG. 5 is a structural diagram of a second gear state of a third gear speed change mechanism of the reduction gearbox according to the present invention;
FIG. 6 is a schematic diagram of a three-gear speed-changing state structure of a three-gear speed-changing mechanism of a reduction gearbox according to the present invention;
FIG. 7 is a schematic structural view of a spline shaft and an output gear in a three-speed change mechanism of a reduction gearbox of the present invention;
FIG. 8 is a schematic structural view of a spline housing in a three-speed change mechanism of a reduction gearbox according to the present invention;
FIG. 9 is a schematic structural view of a shift sleeve in a three-speed transmission mechanism of a reduction gearbox according to the present invention;
FIG. 10 is a schematic structural view of a second-gear input gear in a third-gear speed change mechanism of a reduction gearbox according to the present invention;
FIG. 11 is a schematic structural view of a second-gear transmission wheel and a connecting sleeve in a third-gear speed change mechanism of a reduction gearbox according to the present invention;
FIG. 12 is a schematic structural view of a first-gear input gear and a first-gear transmission wheel in a three-gear speed change mechanism of a reduction gearbox according to the present invention;
FIG. 13 is a schematic structural diagram of a third-gear input gear and a third-gear transmission wheel in the third-gear speed change mechanism of the reduction gearbox of the present invention.
In the figure: 1. a spline shaft; 2. an output gear; 3. a spline housing; 4. a first-gear input gear; 5. a first gear transmission wheel; 6. a shift sleeve; 61. a slot; 7. a second gear input gear; 8. a second gear transmission wheel; 9. connecting sleeves; 10. a third gear input gear; 11. a third gear transmission wheel; 12. a gear shift fork assembly.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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.
Examples
As shown in fig. 1-13, a three-gear speed change mechanism of a reduction gearbox includes a spline shaft 1, an output gear 2 is fixedly arranged on the spline shaft 1, a spline housing 3 is arranged on the spline shaft 1, a shift sliding sleeve 6 is arranged on the outer side of the spline housing 3 along the axial direction in a sliding manner, a first-gear speed change gear set, a second-gear speed change gear set and a three-gear speed change gear set are further sleeved on the spline shaft 1 in an idle-running manner, and the spline housing 3 is respectively matched with the first-gear speed change gear set, the second-gear speed change gear set and the three-gear speed change gear set in a power transmission manner by sliding the shift sliding sleeve 6 on the spline housing 3, so that 3 power transmission working modes are respectively formed.
The outer side of the spline housing 3 is provided with a gear shifting key groove, the gear shifting sliding sleeve 6 is internally provided with gear shifting key teeth matched with the gear shifting key groove, the gear shifting key teeth are arranged at positions close to two ends in the gear shifting sliding sleeve 6, and a gap is reserved between the gear shifting key teeth at the two ends. The clearance is used for stepping down for the transmission assembly who can not drive 2 gears simultaneously when the gear shift of gear shift sliding sleeve 6 rotates, influences the normal use of reducing gear box.
As shown in fig. 4, the first-gear speed-change gear set is located on one side of the spline housing 3, the first-gear speed-change gear set includes a first-gear input gear 4 and a first-gear transmission wheel 5, the first-gear transmission wheel 5 is fixedly disposed on one side surface of the first-gear input gear 4 close to the spline housing 3 and is coaxially disposed, and the first-gear transmission wheel 5 is provided with a first-gear key slot matched with the gear-shifting teeth on the gear-shifting sliding sleeve 6. When using a grade of variable speed, slide gear shift sliding sleeve 6 to a grade of drive wheel 5 position, make the gear shift key tooth in the gear shift sliding sleeve 6 and the last grade of keyway meshing of grade 5, drive a grade of drive wheel 5 when grade input gear 4 rotates and rotate, and then drive gear shift sliding sleeve 6 and rotate, gear shift sliding sleeve 6 still meshes with spline housing 3 simultaneously, and then make spline housing 3 rotate, and spline housing 3 meshes with integral key shaft 1 all the time, and then make integral key shaft 1 rotate together, integral key shaft 1 rotates and can drive the output gear 2 rotation of fixing above that again, because the rim plate radius of grade input gear 4 and output gear 2 is different, and then realize a grade variable speed effect.
As shown in fig. 5, the second-gear speed-changing gear set is located at the other side of the spline housing 3 corresponding to the first-gear speed-changing gear set, the second-gear speed-changing gear set includes a second-gear input gear 7, a second-gear transmission wheel 8 and a connecting sleeve 9 for connecting the second-gear input gear 7 and the second-gear transmission wheel 8, the second-gear input gear 7, the second-gear transmission wheel 8 and the connecting sleeve 9 are coaxially arranged, and a second-gear key slot matched with the gear shift teeth on the gear shift sliding sleeve 6 is arranged on the side surface of the second-gear transmission wheel 8. When using second gear variable speed, slide gear shift sliding sleeve 6 to second gear drive wheel 8 position, make the gear shift in the gear shift sliding sleeve 6 healthy tooth mesh with the second gear keyway on second gear drive wheel 8 surface mutually, when second gear input gear 7 atress rotates, drive second gear drive wheel 8 and rotate, and then drive gear shift sliding sleeve 6 and rotate, gear shift sliding sleeve 6 still meshes with spline housing 3 simultaneously, and then make spline housing 3 rotate, and spline housing 3 meshes with integral key shaft 1 all the time, and then make integral key shaft 1 rotate together, integral key shaft 1 rotates and can drive output gear 2 who fixes above-mentioned to rotate again, because second gear input gear 7 is different with output gear 2's rim plate radius, and then realize second gear variable speed effect.
As shown in fig. 6, the three-gear speed-changing gear set includes a three-gear input gear 10 and a three-gear transmission wheel 11, the three-gear input gear 10 and the three-gear transmission wheel 11 are located between the second-gear input gear 7 and the second-gear transmission wheel 8, and are freely sleeved on the outer side wall of the connecting sleeve 9, the three-gear transmission wheel 11 is fixedly disposed on one side of the three-gear input gear 10 close to the spline housing 3, and a three-gear key slot matched with a gear shift healthy tooth on the gear shift sliding sleeve 6 is disposed on a side surface of the three-gear transmission wheel 11. When the three-gear speed changing device is used for changing the speed, the gear shifting sliding sleeve 6 slides to the position of the three-gear transmission wheel 11, so that gear shifting healthy teeth in the gear shifting sliding sleeve 6 are meshed with a three-gear key groove on the surface of the three-gear transmission wheel 11, the second-gear transmission wheel 8 corresponds to a gap position in the gear shifting sliding sleeve 6, so that the gear shifting sliding sleeve 6 cannot drive the second-gear transmission wheel 8 to rotate when rotating, when the three-gear input gear 10 rotates under stress, the third-gear transmission wheel 11 is driven to rotate, the gear shifting sliding sleeve 6 is driven to rotate, meanwhile, the gear shifting sliding sleeve 6 is also meshed with the spline housing 3, the spline housing 3 is further driven to rotate, the spline housing 3 is always meshed with the spline shaft 1, the spline shaft 1 rotates together, the spline shaft 1 can drive the output gear 2 fixed on the spline shaft to rotate, and the three-gear speed changing effect is further realized due to the different wheel disc radiuses of the three-gear input gear 10 and the output gear 2.
The outer side of the gear shift sliding sleeve 6 is provided with a slot 61, and a gear shift fork assembly 12 for shifting the gear shift sliding sleeve 6 to move is clamped in the slot 61. During the gear shifting operation, the gear shifting sleeve 6 is driven to move by moving the gear shifting fork assembly 12, so that the gear shifting slide is meshed with different driving wheels.
One end of the connecting sleeve 9 is fixedly connected with the second-gear driving wheel 8, and the other end is in splined connection with the second-gear input gear 7. The connecting sleeve 9 is connected with the second-gear driving wheel 8 and the second-gear input gear 7, the second connecting sleeve 9 is in splined connection with the second-gear input gear 7, accessories can be conveniently machined and produced, the production difficulty is reduced, and the assembly is also convenient and rapid due to the splined connection.
The length of the gap between the gear shift key teeth at the two ends of the gear shift sliding sleeve 6 is larger than or equal to the thickness of the second-gear transmission wheel 8, and when the gear shift sliding sleeve 6 slides to abut against the third-gear input gear 10, the position of the gap corresponds to the position of the second-gear transmission wheel 8. When the gear shifting sliding sleeve 6 is meshed with the third-gear transmission wheel 11, the second-gear transmission wheel 8 is in a gap position, the gear shifting sliding sleeve 6 is meshed with the second-gear transmission wheel 8, the third-gear transmission wheel 11 is ensured not to drive the second-gear rotating wheel to rotate when rotating, and normal use of the reduction gearbox is ensured.
The length of the shift sliding sleeve 6 is greater than the sum of the thicknesses of the second-gear transmission wheel 8 and the third-gear transmission wheel 11, so that the shift sliding sleeve 6 can be meshed with both the third-gear transmission wheel 11 and the spline housing 3, and the shift sliding sleeve 6 can be driven to rotate when rotating; the length of the gear shift sliding sleeve 6 is larger than the thickness of the first-gear transmission wheel 5, so that the gear shift sliding sleeve 6 can be simultaneously meshed with the first-gear transmission wheel 5 and the spline housing 3, and the spline housing 3 can be driven to rotate when the gear shift sliding sleeve 6 rotates.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A three-gear speed change mechanism of a reduction gearbox is characterized in that: the spline shaft is provided with an output gear fixedly, the spline shaft is provided with a spline housing, the outer side of the spline housing is provided with a gear shifting sliding sleeve along the axial sliding direction, the spline shaft is also provided with a first-gear speed change gear set, a second-gear speed change gear set and a third-gear speed change gear set in an idle-running manner, and the spline housing slides on the spline housing through the gear shifting sliding sleeve, so that the spline housing is matched with the first-gear speed change gear set, the second-gear speed change gear set and the third-gear speed change gear set in power transmission respectively, and 3 power transmission working modes are formed respectively.
2. The three-gear speed change mechanism of the reduction gearbox according to claim 1, characterized in that: the gear shifting sliding sleeve is characterized in that a gear shifting key groove is formed in the outer side of the spline sleeve, gear shifting key teeth matched with the gear shifting key groove are arranged in the gear shifting sliding sleeve, the gear shifting key teeth are arranged in the gear shifting sliding sleeve and are close to the two ends, and gaps are reserved between the gear shifting key teeth at the two ends.
3. The three-gear speed change mechanism of the reduction gearbox as claimed in claim 2, wherein: the first-gear speed change gear set is located on one side of the spline sleeve and comprises a first-gear input gear and a first-gear transmission wheel, the first-gear transmission wheel is fixedly arranged on one side face, close to the spline sleeve, of the first-gear input gear and coaxially arranged, and a first-gear key groove matched with the gear shift teeth on the gear shift sliding sleeve is formed in the first-gear transmission wheel.
4. The three-gear speed change mechanism of the reduction gearbox as claimed in claim 3, wherein: the second-gear speed change gear set is positioned on the other side, corresponding to the first-gear speed change gear set, of the spline sleeve and comprises a second-gear input gear, a second-gear transmission wheel and a connecting sleeve used for connecting the second-gear input gear and the second-gear transmission wheel, the second-gear input gear, the second-gear transmission wheel and the connecting sleeve are coaxially arranged, and a second-gear key groove matched with gear shifting teeth on the gear shifting sliding sleeve is formed in the side face of the second-gear transmission wheel.
5. The three-gear speed change mechanism of the reduction gearbox according to claim 4, characterized in that: the three-gear speed change gear set comprises a three-gear input gear and a three-gear transmission wheel, the three-gear input gear and the three-gear transmission wheel are located between the second-gear input gear and the second-gear transmission wheel, the three-gear input gear and the three-gear transmission wheel are sleeved on the outer side wall of the connecting sleeve in a hollow mode and can rotate freely, the three-gear transmission wheel is fixedly arranged on one side, close to the spline sleeve, of the three-gear input gear, and a three-gear key groove matched with gear shift teeth on the gear shift sliding sleeve is formed in the side face of the three-gear transmission wheel.
6. The three-gear speed change mechanism of the reduction gearbox according to claim 5, characterized in that: the outer side of the gear shift sliding sleeve is provided with a slot, and a gear shift fork assembly for shifting the gear shift sliding sleeve to move is clamped in the slot.
7. The three-gear speed change mechanism of the reduction gearbox according to claim 6, wherein: one end of the connecting sleeve is fixedly connected with the second-gear driving wheel, and the other end of the connecting sleeve is in splined connection with the second-gear input gear.
8. The three-gear speed change mechanism of the reduction gearbox according to claim 7, characterized in that: the length of a gap between the gear shifting key teeth at two ends of the gear shifting sliding sleeve is larger than or equal to the thickness of the second-gear transmission wheel, and when the gear shifting sliding sleeve slides to abut against the third-gear input gear, the position of the gap corresponds to the position of the second-gear transmission wheel.
9. The three-gear speed change mechanism of the reduction gearbox according to claim 8, wherein: the length of the gear shifting sliding sleeve is greater than the sum of the thicknesses of the second-gear transmission wheel and the third-gear transmission wheel, and the length of the gear shifting sliding sleeve is greater than the thickness of the first-gear transmission wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211335724.2A CN115899183A (en) | 2022-10-28 | 2022-10-28 | Three-gear speed change mechanism of reduction gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211335724.2A CN115899183A (en) | 2022-10-28 | 2022-10-28 | Three-gear speed change mechanism of reduction gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115899183A true CN115899183A (en) | 2023-04-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211335724.2A Pending CN115899183A (en) | 2022-10-28 | 2022-10-28 | Three-gear speed change mechanism of reduction gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115899183A (en) |
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2022
- 2022-10-28 CN CN202211335724.2A patent/CN115899183A/en active Pending
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