CN212564273U - Stepless speed regulating gearbox for precision drill seeder - Google Patents
Stepless speed regulating gearbox for precision drill seeder Download PDFInfo
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- CN212564273U CN212564273U CN202021644553.8U CN202021644553U CN212564273U CN 212564273 U CN212564273 U CN 212564273U CN 202021644553 U CN202021644553 U CN 202021644553U CN 212564273 U CN212564273 U CN 212564273U
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Abstract
The utility model provides a stepless speed regulating gearbox for an accurate drill seeder, which comprises an upper shell, a lower shell, an output shaft, an input shaft and a curved plate assembly, wherein the curved plate assembly comprises a curved plate shaft and a curved plate, the curved plate assembly is arranged on the lower shell through the curved plate shaft, and a curved plate groove is arranged on the curved plate; the bent plate limiting block is movably arranged on the lower shell and is positioned on one side back to the bent plate groove; the cam is arranged on the input shaft; the roller assembly comprises a pair of positioning plates, a one-way bearing and a roller which are arranged in parallel, the roller comprises a first roller and a second roller, the one-way bearing is arranged on the output shaft and is connected with the pair of positioning plates through a one-way bearing seat, the first roller is arranged in the curved plate groove, and the second roller is in contact with the cam; the spring pull rod is arranged on the shaft sleeve of the lower shell and is positioned between the reset spring positioning shaft and the bent plate assembly; the return spring is arranged between the return spring positioning shaft and the spring pull rod. Simple structure, mechanical properties are stable, the volume is light, avoids frequently taking apart the maintenance.
Description
Technical Field
The utility model relates to a gearbox technical field especially relates to a stepless speed regulating gearbox for accurate drill seeder.
Background
Continuously variable refers to a transmission system that can continuously achieve any ratio in the transmission range.
The traditional speed-adjustable speed reducer is mostly of a gear set structure, and utilizes cylindrical gears, conical gears or worms and other parts to form a set of transmission mechanism, so that the purpose of speed change is realized.
Therefore, there is a need to develop a stepless speed regulating gearbox for a precision drill, which has a simple structure, stable mechanical performance and a light volume, avoids frequent disassembly for maintenance, reduces maintenance frequency and further reduces maintenance cost.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art or the correlation technique.
Therefore, the utility model provides a stepless speed regulating gearbox for an accurate drill seeder.
In view of this, the utility model provides a stepless speed regulating gearbox for accurate drill, including last casing and lower casing, and set up in down the casing with output shaft and input shaft between the last casing, be equipped with first keyway on the input shaft, be equipped with the axle sleeve on the casing down, stepless speed regulating gearbox still includes:
the assembly comprises a bent plate shaft and a bent plate sleeved on the bent plate shaft, the bent plate assembly is arranged on the lower shell through the bent plate shaft, and a bent plate groove is formed in the end face, facing the output shaft, of the bent plate;
the bent plate limiting block is movably arranged on the lower shell and is positioned on one side back to the bent plate groove;
the cam is arranged on the input shaft, and a second key groove is formed in the cam;
the roller assembly comprises a pair of positioning plates, a one-way bearing and a roller, wherein the positioning plates are arranged in parallel, the one-way bearing is arranged at one end of each positioning plate, the roller is arranged at one end far away from the one-way bearing, the roller comprises a first roller and a second roller, the one-way bearing is arranged on the output shaft, the one-way bearing is connected with the positioning plates through a one-way bearing seat, the first roller is arranged in the curved plate groove, and the second roller is in contact with the cam;
the spring pull rod is arranged on the shaft sleeve and is positioned between the return spring positioning shaft and the bent plate assembly;
and the reset spring is arranged between the reset spring positioning shaft and the spring pull rod, the reset spring positioning shaft is positioned between the pair of positioning plates, and the reset spring positioning shaft and the second idler wheel are arranged diagonally.
Further, go up and be equipped with the mounting panel on the casing, be equipped with first arc groove and second arc groove on the mounting panel, first arc groove is close to go up the casing setting, be equipped with the adjustment connecting plate in the first arc inslot, the adjustment connecting plate with the bent plate stopper is connected, the adjustment connecting plate is in remove in the first arc inslot, and then drive the motion of bent plate stopper, still be equipped with adjustment handle on the mounting panel, adjustment handle's one end with the adjustment connecting plate is connected, adjustment handle's the other end set up in the second arc inslot, adjustment handle can remove in the second arc inslot.
Further, the roller assembly further comprises:
and the spring catch wheel is arranged between the pair of positioning plates through a spring catch wheel positioning shaft and is close to the first idler wheel.
Further, the continuously variable transmission further comprises:
the damping spring comprises a U-shaped end, a pair of steel wire ends and a spring body positioned between the U-shaped end and the pair of steel wire ends, the U-shaped end abuts against the spring pull rod, the pair of steel wire ends abuts against the spring catch wheel, and the spring body is sleeved on the vertical shaft;
the vertical shaft is arranged on the lower shell and located between the spring pull rod and the bent plate assembly, and the vertical shaft and the lower shell are integrally formed.
Further, the continuously variable transmission further comprises:
and the flat key is arranged in the first key groove and the second key groove and is used for connecting the input shaft and the cam.
Further, the continuously variable transmission further comprises:
the oil suction disc is arranged on the input shaft and is positioned below the cam;
and the magnet is arranged in the oil absorption disc.
Further, the roller assembly further comprises:
and the roller positioning shaft is arranged at one end of the positioning plate, which is far away from the one-way bearing, and the roller is sleeved outside the roller positioning shaft.
Further, the upper shell, the lower shell and the rollers are made of nylon.
Further, the cam is made of engineering plastics.
Further, the bent plate is made of an aluminum alloy material.
The utility model provides a technical scheme can include following beneficial effect:
through the setting of cam, wheel components and bent plate, make the cam promote the second gyro wheel and be reciprocating motion on the bent plate, transmit the one-way bearing of wheel components on, through the output shaft output, the setting of rethread bent plate locating piece changes the position of bent plate, and then realizes infinitely variable, this infinitely variable gearbox simple structure, and mechanical properties is stable, avoids often taking apart the maintenance, reduces and maintains the frequency, and then reduces the maintenance cost.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 illustrates a schematic view of a CVT with an upper housing removed according to an embodiment of the present invention;
FIG. 2 is another schematic directional diagram of a CVT with the upper housing removed according to an embodiment of the present invention;
fig. 3 shows a schematic view of an upper housing according to an embodiment of the invention;
fig. 4 shows a schematic view of a roller assembly according to an embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 4 is:
the device comprises a lower shell 1, a roller assembly 2, a one-way bearing seat 201, a one-way bearing 202, a positioning plate 203, a roller 204, a first 2041 roller, a second 2042 roller, a roller positioning shaft 205, a spring catch wheel positioning shaft 206, a spring catch wheel 207, a return spring positioning shaft 208, an output shaft 3, an input shaft 4, a cam 5, a curved plate 6, a curved plate groove 61, a curved plate limiting block 7, a damping spring 8, a return spring 9, a spring pull rod 10, a flat key 11, an oil absorption disc 12, an upper shell 13, a mounting plate 14, an adjusting connecting plate 15, an adjusting handle 16, a magnet 17 and a vertical shaft 18.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
Examples
FIG. 1 illustrates a schematic view of a CVT with an upper housing removed according to an embodiment of the present invention;
fig. 2 shows another schematic view of a cvt with an upper housing removed according to an embodiment of the invention.
As shown in fig. 1 and fig. 2, the present embodiment provides a stepless speed-regulating gearbox for a precision seed drill, including an upper casing 13 and a lower casing 1, and an output shaft 3 and an input shaft 4 which are arranged between the lower casing 1 and the upper casing 13, wherein the input shaft 4 is provided with a first key slot, the lower casing 1 is provided with a shaft sleeve, and the stepless speed-regulating gearbox further includes:
the bent plate assembly comprises a bent plate shaft and a bent plate 6 sleeved on the bent plate shaft, the bent plate assembly is arranged on the lower shell 1 through the bent plate shaft, and a bent plate groove 61 is formed in the end face, facing the output shaft 3, of the bent plate 6;
the bent plate limiting block 7 is movably arranged on the lower shell 1, and the bent plate limiting block 7 is positioned on one side back to the bent plate groove 61;
the cam 5 is arranged on the input shaft 4, and a second key groove is formed in the cam 5;
the roller assembly 2 comprises a pair of positioning plates 203 arranged in parallel, a one-way bearing 202 arranged at one end of each positioning plate 203 and a roller 204 arranged at one end far away from the one-way bearing 202, the roller 204 comprises a first roller 2041 and a second roller 2042, the one-way bearing 202 is arranged on the output shaft 4, the one-way bearing 202 is connected with the pair of positioning plates 203 through a one-way bearing seat 201, the first roller 2041 is arranged in the curved plate groove 61, and the second roller 2042 is in contact with the cam 5;
the spring pull rod 10 is arranged on the shaft sleeve, the spring pull rod 10 is positioned between the reset spring positioning shaft 208 and the curved plate assembly, and the upper end of the spring pull rod 10 is connected with the roller assembly 2;
the return spring 9 is disposed between the return spring positioning shaft 208 and the spring pull rod 10, the return spring positioning shaft 208 is located between the pair of positioning plates 203, and the return spring positioning shaft 208 and the second roller 2042 are disposed diagonally.
Through the setting of cam 5, wheel components 2 and bent plate 6, make cam 5 promote second gyro wheel 2042 and do reciprocating motion on bent plate 6, transmit to wheel components 2's one-way bearing 202 on, through output shaft 3 output, the setting of rethread bent plate locating piece 7 changes the position of bent plate 6, and then realizes infinitely variable, and this infinitely variable gearbox simple structure, mechanical properties is stable, reduces the maintenance cost.
In this embodiment, two sets of roller assemblies 2 are installed on the output shaft 3, the unidirectional bearing 202 in the roller assemblies 2 enables the output shaft 3 to rotate only in one direction to form power transmission, and the two second rollers 2042 are pushed by the cam 5, so that the two first rollers 2041 move in the curved plate groove 61 to drive the output shaft 3 to move in a single direction. In the moving process, due to the action of the return spring 9, the second roller 2042 is in close contact with the cam 5 and the first roller 2041 and the curved plate 6, so that the condition of empty contact is avoided, the output shaft 3 is further pushed to move continuously, and pause cannot be generated.
It should be noted that the crank shaft and the crank 6 are made of cast aluminum by integral molding.
Fig. 3 shows a schematic view of an upper housing according to an embodiment of the invention.
As shown in fig. 3, be equipped with mounting panel 14 on the upper housing 13 in this embodiment, be equipped with first arc groove and second arc groove on the mounting panel 14, first arc groove is close to upper housing 13 and sets up, be equipped with adjusting connecting plate 15 in the first arc inslot, adjusting connecting plate 15 is connected with bent plate stopper 7, adjusting connecting plate 15 removes in first arc inslot, and then drive the motion of bent plate stopper 7, still be equipped with adjustment handle 16 on the mounting panel 14, adjusting handle 16's one end and adjusting connecting plate 15 are connected, adjusting handle 16's the other end sets up in the second arc inslot, adjusting handle 16 can remove in the second arc inslot.
The stepless speed regulating gearbox is arranged on the precision drill seeder through the mounting plate 14, the adjusting handle 16 is rotated to drive the adjusting connecting plate 15, and further the position of the bent plate limiting block 7 is changed, so that the position of the bent plate 6 is changed, and the purpose of changing the rotating speed of the stepless speed regulating gearbox through external adjustment is realized.
It should be noted that, the second arc groove is pasted with a scale mark, and the rotating speed of the stepless speed regulating gearbox can be adjusted according to the scale value, so that the adjustment is accurate.
Further, the roller assembly still includes:
the spring catch wheel 207 is disposed between the pair of positioning plates 203 through the spring catch wheel positioning shaft 206, and the spring catch wheel 207 is disposed near the first roller 2041.
A pair of positioning plates 203 and a pogo pin 207 are riveted together by a pogo pin positioning shaft 206.
Further, the stepless speed change gearbox further comprises:
the damping spring 8 comprises a U-shaped end, a pair of steel wire ends and a spring body positioned between the U-shaped end and the pair of steel wire ends, the U-shaped end is propped against the spring pull rod 10, the pair of steel wire ends are propped against the spring catch wheel 207, and the spring body is sleeved on the vertical shaft 18;
the vertical shaft 18 is arranged on the lower shell 1 and is positioned between the spring pull rod 10 and the curved plate component, and the vertical shaft 18 and the lower shell 1 are integrally formed.
The damping spring 8 can ensure the stepless speed regulating gearbox to run stably in work, the noise is reduced, the damping spring has longer service life, and the maintenance cost is further reduced.
Further, the stepless speed change gearbox further comprises:
and a flat key 11 disposed in the first and second key grooves, the flat key 11 being used to connect the input shaft 4 and the cam 5.
Processing has first keyway on input shaft 4, is equipped with the second keyway on the hole of cam 5, and flat key 11 sets up in first keyway and second keyway, and the setting of flat key 11 plays the positioning action to cam 5, and effective transmission moment of torsion guarantees that input shaft 4 drives cam 5 and rotates.
Further, the stepless speed change gearbox further comprises:
the oil suction disc 12 is arranged on the input shaft 4, and the oil suction disc 12 is positioned below the cam 5;
Wherein, the oil absorption disk 12 is made of steel material.
Fig. 4 shows a schematic view of a roller assembly according to an embodiment of the present invention.
As shown in fig. 4, the scroll wheel assembly 2 further includes:
the roller positioning shaft 205 is disposed on one end of the positioning plate 203 away from the one-way bearing 202, and the roller 204 is sleeved on the roller positioning shaft 205.
The pair of positioning plates 203 and the roller 204 can be riveted together by a roller positioning shaft 205.
Further, the upper case 13, the lower case 1, and the roller 205 are made of nylon.
Further, the nylon is a high strength nylon.
In this embodiment, the upper housing 13, the lower housing 1, and the roller 205 are made of nylon 66 or polyamide 66.
It should be noted that the upper casing 13, the lower casing 1, and the roller 205 in this embodiment are not limited to nylon 66 or polyamide 66, but may be materials that can achieve the same strength performance, and are not listed here.
Wherein, nylon 66 is the nylon 66 material of glass fiber reinforcement, and nylon 66 or polyamide 66 are high strength material, and high strength material is lighter, intensity is high, the wearability is good, can improve the life of last casing 13, casing 1 and gyro wheel 205 down, reduction in production cost.
Further, the cam 5 is made of engineering plastic.
The engineering plastic has excellent comprehensive performance, high rigidity, small creep, high mechanical strength, high heat resistance and high electric insulating property, prolongs the service life of the cam 5 and further ensures the stable operation of the stepless speed regulating gearbox.
Further, the curved plate 6 is made of an aluminum alloy material.
The aluminum alloy has low density, high strength close to or higher than that of high-quality steel and good plasticity, and the bent plate 6 is wear-resistant aluminum alloy.
Specifically, the input shaft 4 is driven by an external sprocket, the cam 5 is mounted on the input shaft 4, the cam 5 pushes the second roller 2042 to move, the first roller 2041 is mounted in the curved plate groove 61 and moves in the curved plate groove 61, the roller assembly is an assembly part, the output shaft 3 is driven to move through the one-way bearing 202, the position of the curved plate 6 is changed, the movement track of the first roller 2041 in the curved plate groove 61 changes within the same time, and the change is reflected to the output shaft 3, namely the change of the rotation speed of the output shaft 3.
Further, the adjusting connecting plate 15 is driven to move by the movement of the adjusting handle 16, so that the position of the curved plate limiting block 7 connected with the adjusting connecting plate 15 is changed, the curved plate limiting block 7 pushes the curved plate 6 to rotate, and the position angle of the curved plate 6 is changed, so that when the movement track of the first roller 2041 in the curved plate groove 61 is changed in the same time, the rotating speed of the output shaft 3 connected with the one-way bearing 202 at the other end is correspondingly changed, thereby playing a role in speed regulation, and as the curved plate 6 rotates randomly without gears in a certain range, stepless speed regulation is realized.
It should be noted that, each component of this embodiment is installed on the lower casing, and is installed with bearing and skeleton oil seal, and the upper casing is covered with sealing installation, and the inside hydraulic oil that is equipped with of infinitely variable speed gearbox.
The upper shell and the lower shell of the embodiment are made of high-strength plastic materials, the cam is made of engineering plastics, the roller is made of high-strength nylon, the bent plate is made of wear-resistant aluminum alloy materials, the materials are light and convenient, the strength is high, the wear resistance is good, and the manufacturing cost is further reduced.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.
Claims (10)
1. The utility model provides a stepless speed regulating gearbox for accurate drill, includes casing and lower casing, and set up in down the casing with output shaft and input shaft between the casing go up, be equipped with first keyway on the input shaft, be equipped with the axle sleeve on the casing down, its characterized in that, stepless speed regulating gearbox still includes:
the bent plate assembly comprises a bent plate shaft and a bent plate sleeved on the bent plate shaft, the bent plate assembly is arranged on the lower shell through the bent plate shaft, and a bent plate groove is formed in the end face, facing the output shaft, of the bent plate;
the bent plate limiting block is movably arranged on the lower shell and is positioned on one side back to the bent plate groove;
the cam is arranged on the input shaft, and a second key groove is formed in the cam;
the roller assembly comprises a pair of positioning plates, a one-way bearing and a roller, wherein the positioning plates are arranged in parallel, the one-way bearing is arranged at one end of each positioning plate, the roller is arranged at one end far away from the one-way bearing, the roller comprises a first roller and a second roller, the one-way bearing is arranged on the output shaft, the one-way bearing is connected with the positioning plates through a one-way bearing seat, the first roller is arranged in the curved plate groove, and the second roller is in contact with the cam;
the spring pull rod is arranged on the shaft sleeve and is positioned between the return spring positioning shaft and the bent plate assembly;
and the reset spring is arranged between the reset spring positioning shaft and the spring pull rod, the reset spring positioning shaft is positioned between the pair of positioning plates, and the reset spring positioning shaft and the second idler wheel are arranged diagonally.
2. The stepless speed regulating gearbox for the precise drill seeder as claimed in claim 1, wherein a mounting plate is arranged on the upper housing, a first arc groove and a second arc groove are arranged on the mounting plate, the first arc groove is arranged close to the upper housing, an adjusting connecting plate is arranged in the first arc groove, the adjusting connecting plate is connected with the curved plate stopper, the adjusting connecting plate moves in the first arc groove to drive the curved plate stopper to move, an adjusting handle is further arranged on the mounting plate, one end of the adjusting handle is connected with the adjusting connecting plate, the other end of the adjusting handle is arranged in the second arc groove, and the adjusting handle can move in the second arc groove.
3. The stepless speed change gearbox for a precision seed drill according to claim 1, characterized in that the roller assembly further comprises:
and the spring catch wheel is arranged between the pair of positioning plates through a spring catch wheel positioning shaft and is close to the first idler wheel.
4. The infinitely variable transmission for precision seed drills according to claim 3, further comprising:
the damping spring comprises a U-shaped end, a pair of steel wire ends and a spring body positioned between the U-shaped end and the pair of steel wire ends, the U-shaped end abuts against the spring pull rod, the pair of steel wire ends abuts against the spring catch wheel, and the spring body is sleeved on the vertical shaft;
the vertical shaft is arranged on the lower shell and located between the spring pull rod and the bent plate assembly, and the vertical shaft and the lower shell are integrally formed.
5. The infinitely variable transmission for precision seed drills according to claim 1, further comprising:
and the flat key is arranged in the first key groove and the second key groove and is used for connecting the input shaft and the cam.
6. The infinitely variable transmission for precision seed drills according to claim 1, further comprising:
the oil suction disc is arranged on the input shaft and is positioned below the cam;
and the magnet is arranged in the oil absorption disc.
7. The stepless speed change gearbox for a precision seed drill according to claim 1, characterized in that the roller assembly further comprises:
and the roller positioning shaft is arranged at one end, far away from the one-way bearing, between the pair of positioning plates, and the roller is sleeved outside the roller positioning shaft.
8. The infinitely variable speed gearbox for a precision drill according to any one of claims 1 to 7, wherein the upper housing, the lower housing and the rollers are made of nylon.
9. The stepless speed change gearbox for a precision drill according to any one of claims 1 to 7, wherein the cam is made of engineering plastics.
10. The stepless speed change gearbox for a precision seed drill according to any one of claims 1 to 7, characterized in that the curved plate is made of an aluminum alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021644553.8U CN212564273U (en) | 2020-08-10 | 2020-08-10 | Stepless speed regulating gearbox for precision drill seeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021644553.8U CN212564273U (en) | 2020-08-10 | 2020-08-10 | Stepless speed regulating gearbox for precision drill seeder |
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| Publication Number | Publication Date |
|---|---|
| CN212564273U true CN212564273U (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021644553.8U Active CN212564273U (en) | 2020-08-10 | 2020-08-10 | Stepless speed regulating gearbox for precision drill seeder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114076189A (en) * | 2020-08-10 | 2022-02-22 | 吉林省康达农业机械有限公司 | Stepless speed regulating gearbox for precision drill seeder |
-
2020
- 2020-08-10 CN CN202021644553.8U patent/CN212564273U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114076189A (en) * | 2020-08-10 | 2022-02-22 | 吉林省康达农业机械有限公司 | Stepless speed regulating gearbox for precision drill seeder |
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