CN213685144U - Eccentric gear reversing device - Google Patents
Eccentric gear reversing device Download PDFInfo
- Publication number
- CN213685144U CN213685144U CN202022280904.8U CN202022280904U CN213685144U CN 213685144 U CN213685144 U CN 213685144U CN 202022280904 U CN202022280904 U CN 202022280904U CN 213685144 U CN213685144 U CN 213685144U
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- gear
- shaft
- eccentric
- spline
- eccentric gear
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- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 244000309464 bull Species 0.000 claims abstract description 8
- 230000007246 mechanism Effects 0.000 claims abstract description 5
- 239000004519 grease Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 abstract description 4
- 230000002457 bidirectional effect Effects 0.000 abstract 1
- 238000005086 pumping Methods 0.000 description 10
- 230000001133 acceleration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses an eccentric gear switching-over device, including four pairs of eccentric gear, the big cylinder straight-teeth gear in shaft hole, cylinder straight-teeth gear axle, eccentric shaft, bull gear axle, even a frame axle, output shaft, bearing, axle sleeve, gear retaining ring, even a frame axle head cover. The large cylindrical straight gear is driven by the cylindrical gear shaft to rotate in a single direction as the planet carrier, two pairs of eccentric gears on the planet carrier are connected by the eccentric gear connecting shaft and fix the relative positions of the eccentric gears, one end of each eccentric gear is meshed with the fixed sun gear, and the other end of each eccentric gear is meshed with the rotary sun gear, so that the rotary sun gear can output periodic two-way rotation. The utility model discloses mainly utilize the transmission characteristic of positive eccentric gear to combine planetary gear train's motion characteristics to realize inputting unidirectional rotation and realizing outputting periodic bidirectional rotation's reversing mechanism, this mechanism transmission reliability is high, and the motion is stable, not only can work under the environment of low-speed heavy load, can work under the environment of high-speed heavy load moreover.
Description
Technical Field
The utility model belongs to the technical field of machinery, a transmission, concretely relates to eccentric gear switching-over device is designed.
Background
The widely used beam-pumping unit at present is mainly beam-pumping unit, beam-pumping unit face the stroke short, problem that efficiency is lower, beam-pumping unit want to enlarge the stroke and need double increase in size, its inefficiency, cause the waste of resource and energy. The oil pumping unit is mainly developed towards the long stroke and low stroke frequency direction in the future, the reversing modes commonly adopted by the long-stroke oil pumping unit comprise three types of mechanical reversing, hydraulic reversing and motor reversing, and the mechanical reversing device has the remarkable advantages of mature technology, stable work and low manufacturing cost, so that the mechanical reversing device is the most widely applied reversing mode of the existing long-stroke oil pumping unit. In a long-stroke pumping unit, a drum-type pumping unit has the advantages of easiness in stroke frequency adjustment, high efficiency and energy conservation, but the main obstacle which troubles the development of the drum-type pumping unit at present is the lack of a reliable and good reversing device.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides an eccentric gear switching-over device.
The utility model discloses an aim at accessible is realized by following technical scheme:
an eccentric gear reversing device comprises a connecting frame shaft end cover (1), a connecting frame shaft (2) fixed with the connecting frame shaft end cover (1), a spline eccentric gear I (3) and a spline eccentric gear II (17) installed at the rear end of the connecting frame shaft, a gear retainer ring I (16) used for positioning two gears, a large gear shaft (4) installed with the connecting frame shaft, a pair of large bearings (20) installed on the large gear shaft in a limiting mode through a shaft shoulder and a large gear shaft sleeve (21) and used for installing a shaft hole large cylindrical straight gear (8), an eccentric gear I (9) and an eccentric gear II (18) installed on the shaft hole large cylindrical straight gear (8) through a small bearing I (7) and a small bearing II (19), a flat key eccentric gear I (5), a flat key eccentric gear II (12), a flat key eccentric gear III (15) and a flat key eccentric gear IV (23) fixedly installed on the eccentric gear shaft through a flat key (11), The eccentric gear shaft sleeve (6) is used for positioning the first flat key eccentric gear (5) and the fourth flat key eccentric gear (23), the cylindrical straight gear shaft (14) is used for being matched with the shaft hole large cylindrical straight gear (8) for transmission and serving as an input shaft, the output shaft (13) is installed on the large gear shaft (4), the large gear shaft sleeve (21) is used for positioning the output shaft, and the middle of the third spline eccentric gear (22) and the fourth spline eccentric gear (10) which are installed on the output shaft (13) is limited by the second gear retainer ring (24);
the spline eccentric gear I (3), the spline eccentric gear II (17) and the spline eccentric gear III (22) and the spline eccentric gear IV (10) on the output shaft (13) are symmetrically arranged front and back, each pair of spline eccentric gears are symmetrically and staggeredly arranged, the front spline eccentric gear and the rear spline eccentric gear are fixed at opposite positions by the gear retainer ring I (16) and the gear retainer ring II (24), the eccentric wheel shaft I (9) and the eccentric wheel shaft II (18) arranged on the large cylindrical straight gear (8) of the shaft hole are symmetrically arranged in the center, each pair of bearings arranged in the hole of the large cylindrical straight gear (8) of the shaft hole are positioned by a hole shoulder, the end cover (1) of the connecting frame shaft is used for being fixed on a box seat (25) of the gear box, and the output shaft (13) is provided with a bearing and assembled on the box body.
Even a shaft end cover (1) preceding terminal surface is equipped with six through-holes and is convenient for fix on case seat (25) with the bolt, even a shaft end cover rear end installation even a shaft (2) are splined connection, and end cover spline hole depth equals with even a preceding key length of a shaft, even a shaft (2) middle part is equipped with the shaft shoulder, and two parts are the spline of symmetrical processing around, and the centre has the through-hole, the through-hole with bull gear axle (4) are interference fit to by shaft shoulder restriction fit position, the axle equals with hole length, install in the bull gear axle middle part big cylinder straight-teeth gear in shaft hole (8) by the shaft shoulder with bull gear axle sleeve (21) location.
The front part of the output shaft (13) is provided with a spline for mounting a spline eccentric gear III (22) and a spline eccentric gear IV (10), the relative position of the eccentric gears is limited by a large gear shaft sleeve (21), a gear retainer ring II (24) and an output shaft (13) shaft shoulder, the output shaft (13) and the large gear shaft (4) are in clearance fit and lubricated by grease, the large gear shaft sleeve (21) limits the relative position of the output shaft (13) and the large gear shaft (4), a hole is a through hole, the shaft length just passes through a bearing mounting edge, the surface precision of the shaft and the hole is properly improved, and the middle part of the output shaft (13) is provided with a shaft shoulder mounting bearing and is assembled in a gear box body.
And two ends of the cylindrical straight gear shaft (14) are provided with shaft shoulders for mounting a bearing and are assembled on the box body.
The eccentric wheel shaft I (9) and the eccentric wheel shaft II (18) which are arranged on the large cylindrical straight gear (8) of the shaft hole are limited by a shaft shoulder and an eccentric wheel shaft sleeve (6), the flat key eccentric gear I (5), the flat key eccentric gear II (12), the flat key eccentric gear III (15) and the flat key eccentric gear IV (23) which are arranged on the shaft are locked at circumferential positions by a flat key (11) and are in interference fit with the eccentric wheel shaft, the axial positions are limited by the shaft shoulder and the eccentric wheel shaft sleeve (6), and a pair of gears on each eccentric wheel shaft are symmetrically arranged in the center.
Two flat keys of each flat key eccentric gear are mounted on the eccentric wheel shaft I (9) and the eccentric wheel shaft II (18) and are symmetrical with each other in an axis, and the flat key eccentric gears and the spline eccentric gears are meshed in pairs and mounted in a coplanar manner.
The device is with spline eccentric gear one (3), spline eccentric gear two (17), spline eccentric gear three (22) and spline eccentric gear four (10) as the sun gear, flat key eccentric gear one (5), flat key eccentric gear two (12), flat key eccentric gear three (15) and flat key eccentric gear four (23) are the planet wheel, and big cylinder straight-teeth gear in shaft hole (8) are the planet carrier, and even frame shaft (2) are fixed sun gear axle, and output shaft (13) are rotatory sun gear axle, the part is mutually supported and is accomplished the switching-over work.
Compared with the prior art, the eccentric gear reversing device has the advantages that:
1. the transmission gears adopted in the reversing device are cylindrical gears, so that the reversing device is convenient to process, the gear transmission has the characteristics of high reliability and accurate transmission, the output shaft of the system has no abrupt angular acceleration, the output angular velocity is a linear periodic function, the motion transmission is soft and has no rigid impact, and the service life of the system can be prolonged.
2. The distribution mode of the gears is that the large gear shaft is symmetrically arranged, the gravity center of the mechanism is on the axis of the large gear shaft, the vibration is small during the rotary motion, and the gear transmission mechanism is suitable for high-speed transmission.
Drawings
FIG. 1 is a schematic perspective view of an eccentric gear reversing device;
FIG. 2 is a top cross-sectional block diagram of an eccentric gear shifting apparatus;
in the figure: 1. a connecting frame shaft end cover; 2. a frame connecting shaft; 3. a spline eccentric gear I; 4. a large gear shaft; 5. a flat key eccentric gear I; 6. An eccentric wheel shaft sleeve; 7. a small bearing I; 8. a shaft hole large cylindrical straight gear; 9. a first eccentric wheel shaft; 10. a spline eccentric gear IV; 11. a flat bond; 12. a flat key eccentric gear II; 13. an output shaft; 14. a cylindrical straight gear shaft; 15. a flat key eccentric gear III; 16. a first gear retainer ring; 17. a spline eccentric gear II; 18. a second eccentric wheel shaft; 19. a small bearing II; 20. a large bearing; 21. a bull gear shaft sleeve; 22. a spline eccentric gear III; 23. a flat key eccentric gear four; 24. a second gear retainer ring; 25. a box seat.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in figure 2, shaft shoulder mounting bearings are required to be arranged at two ends of a cylindrical straight gear shaft (14) and used for being assembled on a gear box body, the front end of the shaft is connected with a motor through a coupling, six through holes are formed in the front end face of a connecting frame shaft end cover (1) and are convenient to fix on a box base (25) through bolts, the connecting frame shaft (2) fixedly installed on the connecting frame shaft end cover 1 through splines and the axial position of the connecting frame shaft are fixed through a connecting frame shaft (2) shaft shoulder, and a spline eccentric gear I (3) and a spline eccentric gear II (17) are installed at the rear end of the connecting frame shaft and are fixed at the axial position through the connecting frame shaft shoulder, a gear retainer ring I (16).
Big gear shaft (4) of installation on link axle (2), its characterized in that: the matching mode is interference fit, the hole of the connecting frame shaft is a through hole, the length of the shaft is equal to that of the hole, and the axial position of the shaft hole large cylindrical straight gear (8) arranged at the middle section of the large gear shaft (4) is limited by a shaft shoulder and a large gear shaft sleeve (21).
Install in output shaft (13) of big gear shaft (4) rear section, its characterized in that: the front section of the output shaft (13) is a spline and is used for mounting a spline eccentric gear III (22), the spline eccentric gear IV (10) is axially fixed by a large gear shaft sleeve (21), a gear retainer ring II (24) and the shaft shoulder of the output shaft (13), the middle section of the output shaft (13) is a shaft shoulder, the rear section of the output shaft (13) is used for mounting a bearing and a coupler and is assembled on the box body by the bearing, the shaft hole of the output shaft (13) is a through hole, the matching mode of the output shaft and the lower section of the large gear shaft (4) is clearance fit, the output shaft is lubricated by grease, the surface precision of the shaft and the hole is properly improved, the shaft length just passes through the mounting edge of the bearing, and the axial position of the output shaft (13) is limited by the large gear shaft sleeve (.
The two pairs of spline eccentric gears which are respectively arranged on the connecting frame shaft (2) and the output shaft (13) are symmetrically arranged up and down, the spline eccentric gear I (3) and the spline eccentric gear II (17) are symmetrically and alternately arranged, the spline eccentric gear III (22) and the spline eccentric gear IV (10) are symmetrically and alternately arranged, the eccentric wheel shaft I (9) and the eccentric wheel shaft II (18) which are arranged on the large cylindrical straight gear (8) of the shaft hole are symmetrically arranged in the center, and each pair of bearings which are arranged in the hole of the large cylindrical straight gear (8) of the shaft hole are positioned by a hole shoulder.
Two flat keys for installing each eccentric gear on the eccentric wheel shaft I (9) and the eccentric wheel shaft II (18) are symmetrical in axis, and the flat key eccentric gears and the spline eccentric gears are installed in a coplanar manner in a pairwise meshing mode.
The eccentric wheel shaft I (9) and the eccentric wheel shaft II (18) which are arranged on the large cylindrical straight gear (8) of the shaft hole are limited by a shaft shoulder and an eccentric wheel shaft sleeve (6), the flat key eccentric gear which is arranged on the eccentric shaft of the shaft is locked at the circumferential position by a flat key (10), is in interference fit with an eccentric gear shaft and is limited at the axial position by the shaft shoulder and the shaft sleeve, and a pair of gears on each eccentric gear shaft are symmetrically arranged in the center.
The working principle is as follows: when the device is installed, the cylindrical straight gear shaft (14) is connected with a motor or a one-way rotating shaft through a coupler, and the output shaft (13) is connected with a shaft needing to be input with periodic two-way rotation through the coupler. The eccentric gear meshing transmission has the characteristic of periodically changing the rotating speed, and the two flat key eccentric gears are coaxially and centrosymmetrically arranged to play a role in amplifying speed change; and a first spline eccentric gear (3) and a second spline eccentric gear (17) which serve as sun gears on one side are fixed, and a large cylindrical straight gear (8) serving as a shaft hole of the planet carrier drives a first flat key eccentric gear (5), a second flat key eccentric gear (12), a third flat key eccentric gear (15) and a fourth flat key eccentric gear (23) which serve as planet gears to rotate so as to drive a third spline eccentric gear (22) and a fourth spline eccentric gear (10) which serve as sun gears on the other side to periodically rotate in two directions.
The basic structure and the working principle of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. An eccentric gear reversing device is characterized in that: the gear positioning mechanism comprises a connecting frame shaft end cover (1), a connecting frame shaft (2) fixed with the connecting frame shaft end cover (1), a first spline eccentric gear (3) and a second spline eccentric gear (17) installed at the rear end of the connecting frame shaft, a first gear retaining ring (16) used for positioning two gears, a large gear shaft (4) installed with the connecting frame shaft, a pair of large bearings (20) installed on the large gear shaft in a limiting mode through a shaft shoulder and a large gear shaft sleeve (21) and used for installing a shaft hole large cylindrical straight gear (8), a first eccentric gear shaft (9) and a second eccentric gear shaft (18) installed on the shaft hole large cylindrical straight gear (8) through a small bearing (7) and a small bearing (19), a first flat key eccentric gear (5), a second flat key eccentric gear (12), a third flat key eccentric gear (15) and a fourth flat key eccentric gear (23) fixedly installed on the eccentric gear shaft through a flat key (11), and a first flat key eccentric gear (5) used for positioning, The eccentric wheel shaft sleeve (6) of the flat key eccentric gear four (23), a cylindrical straight gear shaft (14) which is used for being matched with the shaft hole large cylindrical straight gear (8) for transmission and serves as an input shaft, an output shaft (13) arranged on the large gear shaft (4), a large gear shaft sleeve (21) used for positioning the output shaft, a spline eccentric gear three (22) arranged on the output shaft (13) and a spline eccentric gear four (10) are limited by a gear retainer ring two (24);
the spline eccentric gear I (3), the spline eccentric gear II (17) and the spline eccentric gear III (22) and the spline eccentric gear IV (10) on the output shaft (13) are symmetrically arranged front and back, each pair of spline eccentric gears are symmetrically and staggeredly arranged, the front spline eccentric gear and the rear spline eccentric gear are fixed at opposite positions by the gear retainer ring I (16) and the gear retainer ring II (24), the eccentric wheel shaft I (9) and the eccentric wheel shaft II (18) arranged on the large cylindrical straight gear (8) of the shaft hole are symmetrically arranged in the center, each pair of bearings arranged in the hole of the large cylindrical straight gear (8) of the shaft hole are positioned by a hole shoulder, the end cover (1) of the connecting frame shaft is used for being fixed on a box seat (25) of the gear box, and the output shaft (13) is provided with a bearing and assembled on the box body.
2. An eccentric gear commutating device according to claim 1 wherein: even a shaft end cover (1) preceding terminal surface is equipped with six through-holes and is convenient for fix on case seat (25) with the bolt, even a shaft end cover rear end installation even a shaft (2) are splined connection, and end cover spline hole depth equals with even a preceding key length of a shaft, even a shaft (2) middle part is equipped with the shaft shoulder, and two parts are the spline of symmetrical processing around, and the centre has the through-hole, the through-hole with bull gear axle (4) are interference fit to by shaft shoulder restriction fit position, the axle equals with hole length, install in the bull gear axle middle part big cylinder straight-teeth gear in shaft hole (8) by the shaft shoulder with bull gear axle sleeve (21) location.
3. An eccentric gear commutating device according to claim 1 wherein: the front part of the output shaft (13) is provided with a spline for mounting a spline eccentric gear III (22) and a spline eccentric gear IV (10), the relative position of the eccentric gears is limited by a large gear shaft sleeve (21), a gear retainer ring II (24) and an output shaft (13) shaft shoulder, the output shaft (13) and the large gear shaft (4) are in clearance fit and lubricated by grease, the large gear shaft sleeve (21) limits the relative position of the output shaft (13) and the large gear shaft (4), a hole is a through hole, the shaft length just passes through a bearing mounting edge, the surface precision of the shaft and the hole is properly improved, and the middle part of the output shaft (13) is provided with a shaft shoulder mounting bearing and is assembled in a gear box body.
4. An eccentric gear commutating device according to claim 1 wherein: and two ends of the cylindrical straight gear shaft (14) are provided with shaft shoulders for mounting a bearing and are assembled on the box body.
5. An eccentric gear commutating device according to claim 1 wherein: the eccentric wheel shaft I (9) and the eccentric wheel shaft II (18) which are arranged on the large cylindrical straight gear (8) of the shaft hole are limited by a shaft shoulder and an eccentric wheel shaft sleeve (6), the flat key eccentric gear I (5), the flat key eccentric gear II (12), the flat key eccentric gear III (15) and the flat key eccentric gear IV (23) which are arranged on the shaft are locked at circumferential positions by a flat key (11) and are in interference fit with the eccentric wheel shaft, the axial positions are limited by the shaft shoulder and the eccentric wheel shaft sleeve (6), and a pair of gears on each eccentric wheel shaft are symmetrically arranged in the center.
6. An eccentric gear commutating device according to claim 1 wherein: two flat keys of each flat key eccentric gear are mounted on the eccentric wheel shaft I (9) and the eccentric wheel shaft II (18) and are symmetrical with each other in an axis, and the flat key eccentric gears and the spline eccentric gears are meshed in pairs and mounted in a coplanar manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022280904.8U CN213685144U (en) | 2020-10-14 | 2020-10-14 | Eccentric gear reversing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022280904.8U CN213685144U (en) | 2020-10-14 | 2020-10-14 | Eccentric gear reversing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213685144U true CN213685144U (en) | 2021-07-13 |
Family
ID=76756707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022280904.8U Expired - Fee Related CN213685144U (en) | 2020-10-14 | 2020-10-14 | Eccentric gear reversing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213685144U (en) |
-
2020
- 2020-10-14 CN CN202022280904.8U patent/CN213685144U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210713 |