CN114076189B - Stepless speed regulating gearbox for precision drill seeder - Google Patents
Stepless speed regulating gearbox for precision drill seeder Download PDFInfo
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- CN114076189B CN114076189B CN202010795646.9A CN202010795646A CN114076189B CN 114076189 B CN114076189 B CN 114076189B CN 202010795646 A CN202010795646 A CN 202010795646A CN 114076189 B CN114076189 B CN 114076189B
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims description 21
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 229910000838 Al alloy Inorganic materials 0.000 claims description 6
- 239000004677 Nylon Substances 0.000 claims description 6
- 238000013016 damping Methods 0.000 claims description 6
- 229920001778 nylon Polymers 0.000 claims description 6
- 229920006351 engineering plastic Polymers 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 14
- 239000003921 oil Substances 0.000 description 11
- 229920002302 Nylon 6,6 Polymers 0.000 description 8
- 230000033001 locomotion Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/08—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for interconverting rotary motion and reciprocating motion
- F16H25/10—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for interconverting rotary motion and reciprocating motion with adjustable throw
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
- Friction Gearing (AREA)
Abstract
The invention provides a stepless speed regulating gearbox for a precision drill, which comprises an upper shell, a lower shell, an output shaft, an input shaft, a curved plate assembly, a curved plate shaft and a curved plate, wherein the curved plate assembly is arranged on the lower shell through the curved plate shaft, and a curved plate groove is formed in the curved plate; the curved plate limiting block is movably arranged on the lower shell and is positioned at one side back to the curved plate groove; the cam is arranged on the input shaft; the roller assembly comprises a pair of locating plates, a one-way bearing and rollers, wherein the locating plates, the one-way bearing and the rollers are arranged in parallel, the rollers comprise a first roller and a second roller, the one-way bearing is arranged on the output shaft and is connected with the pair of locating plates through a one-way bearing seat, the first roller is arranged in the curved plate groove, and the second roller is contacted 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, stable mechanical property and light volume, and avoids frequent disassembly and maintenance.
Description
Technical Field
The invention relates to the technical field of gearboxes, in particular to a stepless speed regulating gearbox for a precision drill.
Background
Continuously variable refers to a transmission system that continuously achieves any gear ratio within a range of speeds.
The traditional speed-adjustable speed reducer is mostly of a gear set structure, a set of transmission mechanism is formed by utilizing parts such as a cylindrical gear, a conical gear or a worm, so that the speed change purpose is realized, the mechanism is large in size, heavy in weight, complex in structure, extremely high in manufacturing precision requirement and relatively high in manufacturing cost, and on the basis of a speed-reducing gear set, the traditional speed-adjustable speed reducer realizes the speed adjustment purpose by utilizing parts such as a crankshaft, a shifting fork and a planet wheel, and the like, so that the defects of difficulty in manufacturing, frequent maintenance period, high maintenance cost and the like of the traditional speed-adjustable speed reducer are also caused.
Therefore, it is necessary to develop a stepless speed regulating gearbox for a precision drill with simple structure, stable mechanical performance and light volume, which avoids frequent disassembly for maintenance, reduces maintenance frequency and further reduces maintenance cost.
Disclosure of Invention
The present invention aims to solve one of the technical problems existing in the prior art or related technologies.
Therefore, the invention provides a stepless speed regulating gearbox for a precision drill.
In view of the above, the present invention provides a stepless speed regulating gearbox for a precision drill, comprising an upper housing, a lower housing, an output shaft and an input shaft, wherein the output shaft and the input shaft are arranged between the lower housing and the upper housing, a first key slot is arranged on the input shaft, a shaft sleeve is arranged on the lower housing, and the stepless speed regulating gearbox further comprises:
the crank plate assembly comprises a crank plate shaft and a crank plate sleeved on the crank plate shaft, the crank plate assembly is arranged on the lower shell through the crank plate shaft, and a crank plate groove is formed in the end face of the crank plate, facing the output shaft;
The curved plate limiting block is movably arranged on the lower shell and is positioned at one side back to the curved plate groove;
the cam is arranged on the input shaft and is provided with a second key groove;
The roller assembly comprises a pair of positioning plates, a one-way bearing arranged at one end of the pair of positioning plates and a roller arranged far away from one end of the one-way bearing, wherein 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 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 and is positioned between the return spring positioning shaft and the curved plate assembly;
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 roller are diagonally arranged.
Further, be equipped with the mounting panel on the last 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 groove, the adjustment connecting plate with the bent plate stopper is connected, the adjustment connecting plate is in first arc inslot removes, and then drives the bent plate stopper motion, 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 groove, adjustment handle can remove in the second arc groove.
Further, the roller assembly further includes:
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 roller.
Further, the continuously variable transmission further includes:
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, wherein the U-shaped end is propped against the spring pull rod, the pair of steel wire ends are propped 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 is positioned between the spring pull rod and the curved plate assembly, and the vertical shaft and the lower shell are integrally formed.
Further, the continuously variable transmission further includes:
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 includes:
The oil suction disc is arranged on the input shaft and is positioned below the cam;
the magnet is arranged in the oil absorption plate.
Further, the roller assembly further includes:
the roller positioning shaft is arranged at one end, far away from the one-way bearing, of the positioning plate, and the roller is sleeved on the roller positioning shaft in an sleeved mode.
Further, the upper housing, the lower housing and the roller are made of nylon.
Further, the cam is made of engineering plastics.
Further, the curved plate is made of an aluminum alloy material.
The technical scheme provided by the invention can comprise the following beneficial effects:
through the setting of cam, roller assembly and bent board, make the cam promote the second gyro wheel and do reciprocating motion on the bent board, transmit to roller assembly's one-way bearing on, through output shaft output, the setting of rethread bent board locating piece changes the position of bent board, and then realizes infinitely variable speed, and this infinitely variable speed gearbox simple structure, mechanical properties is stable, avoids often taking apart the maintenance, reduces maintenance frequency, and then reduces 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 that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 shows a schematic diagram of a continuously variable transmission with an upper housing removed in accordance with one embodiment of the present invention;
FIG. 2 illustrates another directional schematic view of the continuously variable transmission with the upper housing removed in accordance with one embodiment of the present invention;
FIG. 3 shows a schematic view of an upper housing according to one embodiment of the invention;
fig. 4 shows a schematic view of a roller assembly according to one embodiment of the invention.
Wherein, the correspondence between the reference numerals and the component names in fig. 1 to 4 is:
The device comprises a lower shell, a roller assembly, a one-way bearing seat, a one-way bearing, a 203 positioning plate, a 204 roller, a 2041 first roller, a 2042 second roller, a 205 roller positioning shaft, a 206 spring catch wheel positioning shaft, a 207 spring catch wheel, a 208 return spring positioning shaft, a3 output shaft, a 4 input shaft, a 5 cam, a 6 bent plate, a 61 bent plate groove, a7 bent plate limiting block, an 8 damping spring, a 9 return spring, a 10 spring pull rod, an 11 flat key, a 12 oil suction disc, a 13 upper shell, a 14 mounting plate, a 15 adjustment connecting plate, a 16 adjustment handle, a 17 magnet and an 18 vertical shaft.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus and methods consistent with aspects of the invention as detailed in the accompanying claims.
Examples
FIG. 1 shows a schematic diagram of a continuously variable transmission with an upper housing removed in accordance with one embodiment of the present invention; FIG. 2 illustrates another directional schematic view of a continuously variable transmission with an upper housing removed in accordance with one embodiment of the present invention.
As shown in fig. 1 and 2, this embodiment proposes a stepless speed regulating gearbox for a precision drill, which includes an upper housing 13 and a lower housing 1, and an output shaft 3 and an input shaft 4 disposed between the lower housing 1 and the upper housing 13, wherein the input shaft 4 is provided with a first key slot, the lower housing 1 is provided with a shaft sleeve, and the stepless speed regulating gearbox further includes:
The crank plate assembly comprises a crank plate shaft and a crank plate 6 sleeved on the crank plate shaft, the crank plate assembly is arranged on the lower shell 1 through the crank plate shaft, and a crank plate groove 61 is formed in the end face of the crank plate 6 facing the output shaft 3;
The curved plate limiting block 7 is movably arranged on the lower shell 1, and the curved plate limiting block 7 is positioned at one side back to the curved 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 the pair of positioning plates 203 and a roller 204 arranged at one end far away from the one-way bearing 202, wherein 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 contacted with the cam 5;
The spring pull rod 10 is arranged on the shaft sleeve, the spring pull rod 10 is positioned between the return 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 disposed between the pair of positioning plates 203, and the return spring positioning shaft 208 is disposed diagonally to the second roller 2042.
Through the setting of cam 5, roller assembly 2 and bent plate 6, make cam 5 promote second gyro wheel 2042 and do reciprocating motion on bent plate 6, transmit on roller assembly 2's one-way bearing 202, export through output shaft 3, the setting of rethread bent plate locating piece 7 changes the position of bent plate 6, and then realizes infinitely variable speed, and this infinitely variable speed gearbox simple structure, mechanical properties is stable, reduces maintenance cost.
In this embodiment, two sets of roller assemblies 2 are installed on the output shaft 3, the one-way bearing 202 in the roller assemblies 2 enables the output shaft 3 to rotate in one direction only 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. During the movement, the second roller 2042 and the cam 5, the first roller 2041 and the curved plate 6 are tightly contacted due to the action of the return spring 9, so that the condition of empty contact is avoided, and the output shaft 3 is pushed to continuously move, and no stop is generated.
The bent plate shaft and the bent plate 6 are integrally formed of cast aluminum.
Fig. 3 shows a schematic view of an upper housing according to an embodiment of the invention.
As shown in fig. 3, in this embodiment, a mounting plate 14 is disposed on the upper housing 13, a first arc slot and a second arc slot are disposed on the mounting plate 14, the first arc slot is disposed near the upper housing 13, an adjusting connection plate 15 is disposed in the first arc slot, the adjusting connection plate 15 is connected with the curved plate limiting block 7, the adjusting connection plate 15 moves in the first arc slot, and further drives the curved plate limiting block 7 to move, an adjusting handle 16 is further disposed on the mounting plate 14, one end of the adjusting handle 16 is connected with the adjusting connection plate 15, the other end of the adjusting handle 16 is disposed in the second arc slot, and the adjusting handle 16 can move in the second arc slot.
The stepless speed regulating gearbox is mounted on the precise drill through the mounting plate 14, the adjusting handle 16 is rotated to drive the adjusting connecting plate 15, and then the position of the curved plate limiting block 7 is changed, so that the position of the curved plate 6 is changed, and the aim of changing the rotating speed of the stepless speed regulating gearbox through external adjustment is fulfilled.
It should be noted that, the second arc groove is equipped with the scale mark, can adjust the rotational speed of stepless speed regulating gearbox according to the scale value, makes the adjustment accurate.
Further, the roller assembly further includes:
The spring stopper 207 is disposed between the pair of positioning plates 203 through the spring stopper positioning shaft 206, and the spring stopper 207 is disposed near the first roller 2041.
The pair of positioning plates 203 and the spring stopper 207 are riveted together by the spring stopper positioning shaft 206.
Further, the continuously variable transmission further includes:
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, wherein 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 bent plate component, and the vertical shaft 18 and the lower shell 1 are integrally formed.
The damping spring 8 can ensure that the stepless speed regulating gearbox stably runs in operation, noise is reduced, the damping spring has longer service life, and maintenance cost is further reduced.
Further, the continuously variable transmission further includes:
and flat keys 11 are arranged in the first key groove and the second key groove, and the flat keys 11 are used for connecting the input shaft 4 and the cam 5.
The first key groove is machined in the input shaft 4, the second key groove is formed in the inner hole of the cam 5, the flat key 11 is arranged in the first key groove and the second key groove, the flat key 11 plays a role in positioning the cam 5, torque is effectively transmitted, and the input shaft 4 is guaranteed to drive the cam 5 to rotate.
Further, the continuously variable transmission further includes:
the oil suction disc 12 is arranged on the input shaft 4, and the oil suction disc 12 is positioned below the cam 5;
A magnet 17, the magnet 17 being disposed in the oil pan 12.
Wherein the oil absorbing plate 12 is made of steel material.
The oil suction disc 12 is arranged below the cam 5, the magnet 17 is adsorbed on the oil suction disc 12, impurities generated in working can be sucked onto the oil suction disc 12, and the cleanness of hydraulic oil is kept free of impurities, so that frequent disassembly and maintenance are avoided, the maintenance frequency is reduced, and further the maintenance cost is reduced.
Fig. 4 shows a schematic view of a roller assembly according to one embodiment of the invention.
As shown in fig. 4, the roller assembly 2 further includes:
the roller positioning shaft 205 is disposed at one end of the positioning plate 203 far away from the unidirectional 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 the roller positioning shaft 205.
Further, the upper housing 13, the lower housing 1, and the roller 205 are made of nylon.
Still 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.
The upper case 13, the lower case 1, and the roller 205 in the present embodiment are not limited to nylon 66 or polyamide 66, but may be made of a material capable of achieving the same strength properties, and are not shown here.
The nylon 66 is made of glass fiber reinforced nylon 66, the nylon 66 or the polyamide 66 is made of high-strength materials, the high-strength materials are lighter, the strength is high, the wear resistance is good, the service lives of the upper shell 13, the lower shell 1 and the roller 205 can be prolonged, and the production cost is reduced.
Further, the cam 5 is made of engineering plastic.
The engineering plastic has excellent comprehensive performance, high rigidity, small creep, high mechanical strength, good heat resistance and good electrical insulation, the service life of the cam 5 is prolonged, and the stable operation of the stepless speed regulating gearbox is further ensured.
Further, the curved plate 6 is made of an aluminum alloy material.
The aluminum alloy has low density, but has higher strength, is close to or exceeds that of high-quality steel, has good plasticity, and further the curved plate 6 is wear-resistant aluminum alloy.
Specifically, the input shaft 4 is driven by an external sprocket to move, 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 to move in the curved plate groove 61, the roller assembly is a mounting 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 in the same time and is reflected to the output shaft 3, and the rotating speed of the output shaft 3 changes.
Further, the adjusting handle 16 moves to drive the adjusting connecting plate 15 to move, 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, when the movement track of the first roller 2041 in the curved plate groove 61 changes in the same time, the rotating speed of the output shaft 3 connected with the one-way bearing 202 at the other end correspondingly changes, and therefore the speed regulation effect is achieved, and the curved plate 6 rotates randomly without gear in a certain range, so that stepless speed regulation is achieved.
The components of the embodiment are mounted on the lower shell, the bearing and the framework oil seal are mounted, the upper shell is covered for sealing mounting, and hydraulic oil is filled in the stepless speed regulating gearbox.
The upper shell and the lower shell of the embodiment are made of high-strength plastic materials, the cam is made of engineering plastic, the roller is made of high-strength nylon, the curved plate is made of wear-resistant aluminum alloy materials, and the material is light, high in strength and good in wear resistance, so that the manufacturing cost is further reduced.
Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It is to be understood that the invention is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (10)
1. The utility model provides a stepless speed regulation gearbox for accurate drill, includes casing and lower casing, and set up in lower casing with output shaft and the input shaft between the last casing, be equipped with first keyway on the input shaft, be equipped with the axle sleeve on the lower casing, its characterized in that, stepless speed regulation gearbox still includes:
the crank plate assembly comprises a crank plate shaft and a crank plate sleeved on the crank plate shaft, the crank plate assembly is arranged on the lower shell through the crank plate shaft, and a crank plate groove is formed in the end face of the crank plate, facing the output shaft;
The curved plate limiting block is movably arranged on the lower shell and is positioned at one side back to the curved plate groove;
the cam is arranged on the input shaft and is provided with a second key groove;
The roller assembly comprises a pair of positioning plates, a one-way bearing arranged at one end of the pair of positioning plates and a roller arranged far away from one end of the one-way bearing, wherein 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 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 and is positioned between the return spring positioning shaft and the curved plate assembly;
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 roller are diagonally arranged.
2. The stepless speed regulating gearbox for a precision drill according to claim 1, wherein the upper shell is provided with a mounting plate, the mounting plate is provided with a first arc groove and a second arc groove, the first arc groove is close to the upper shell, an adjusting connecting plate is arranged in the first arc groove and connected with the curved plate limiting block, the adjusting connecting plate moves in the first arc groove and drives the curved plate limiting block to move, the mounting plate is further provided with an adjusting handle, 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 continuously variable transmission for a precision drill of claim 1, wherein the roller assembly further comprises:
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 roller.
4. A continuously variable transmission for a precision drill as recited in 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, wherein the U-shaped end is propped against the spring pull rod, the pair of steel wire ends are propped 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 is positioned between the spring pull rod and the curved plate assembly, and the vertical shaft and the lower shell are integrally formed.
5. The continuously variable transmission for a precision drill as recited in 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 continuously variable transmission for a precision drill as recited in claim 1, further comprising:
The oil suction disc is arranged on the input shaft and is positioned below the cam;
the magnet is arranged in the oil absorption plate.
7. The continuously variable transmission for a precision drill of claim 1, wherein the roller assembly further comprises:
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 on the roller positioning shaft in an sleeved mode.
8. The continuously variable transmission for a precision drill as recited in any of claims 1-7, wherein the upper housing, the lower housing and the rollers are made of nylon.
9. The continuously variable transmission for precision drill presses as recited in any of claims 1-7, wherein the cam is made of engineering plastic.
10. The continuously variable transmission for a precision drill as recited in any one of claims 1-7, wherein the curved plate is made of an aluminum alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010795646.9A CN114076189B (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 |
|---|---|---|---|
| CN202010795646.9A CN114076189B (en) | 2020-08-10 | 2020-08-10 | Stepless speed regulating gearbox for precision drill seeder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114076189A CN114076189A (en) | 2022-02-22 |
| CN114076189B true CN114076189B (en) | 2024-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010795646.9A Active CN114076189B (en) | 2020-08-10 | 2020-08-10 | Stepless speed regulating gearbox for precision drill seeder |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212564273U (en) * | 2020-08-10 | 2021-02-19 | 吉林省康达农业机械有限公司 | Stepless speed regulating gearbox for precision drill seeder |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100093479A1 (en) * | 2007-02-12 | 2010-04-15 | Fallbrook Technologies Inc. | Continuously variable transmissions and methods therefor |
| CN201294744Y (en) * | 2008-11-14 | 2009-08-26 | 常州东风农机集团有限公司 | Mechanical type infinite variable speed mechanism of zero tillage seeder |
| CN203516630U (en) * | 2013-10-23 | 2014-04-02 | 上海仓田精密机械制造有限公司 | Four-phase side-by-side connecting rod impulse infinitely variable speed device |
| CN106195195B (en) * | 2016-08-30 | 2018-08-07 | 吉林省康达农业机械有限公司 | The unidirectional Speed-adjustable reducer of eccentric wheel bent plate |
| CN109291190B (en) * | 2018-11-05 | 2021-01-15 | 谢国宁 | Bent plate perforating machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212564273U (en) * | 2020-08-10 | 2021-02-19 | 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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| CN114076189A (en) | 2022-02-22 |
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