CN112664576A - Small inertia torque transmission device - Google Patents
Small inertia torque transmission device Download PDFInfo
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- CN112664576A CN112664576A CN202011494300.1A CN202011494300A CN112664576A CN 112664576 A CN112664576 A CN 112664576A CN 202011494300 A CN202011494300 A CN 202011494300A CN 112664576 A CN112664576 A CN 112664576A
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- bearing
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- output shaft
- bushing
- inertia torque
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Abstract
The invention relates to a small inertia torque transmission device, wherein a first bearing and a second bearing are arranged on an output shaft in a spaced and positioning mode and are in interference fit with the output shaft, the output shaft penetrates through an axial cavity of a shell, the inner side wall of the axial cavity is in clearance fit with the outer rings of the first bearing and the second bearing, the inner rings of the first bearing and the second bearing are positioned through an inner bushing, the outer ring is positioned through the outer bushing, the first end cover is connected with one end of the shell and positions the other side of the outer ring of the second bearing relative to the outer bushing, the second end cover is connected with the other end of the shell and positions the other side of the outer ring of the first bearing relative to the outer bushing, the bearing nut is sleeved on the output shaft through a threaded structure and positions the other side of the inner ring of the first bearing relative to the inner bushing through the retaining ring, and the other side of the inner ring of the second bearing relative to the inner bushing is positioned through the convex shoulder on the output shaft. The invention can reduce the rotational inertia of the rotating part and is beneficial to the smooth transmission of torque.
Description
Technical Field
The invention belongs to the technical field of steering gear testing, and particularly relates to a small-inertia torque transmission device.
Background
At present, a motor is directly connected with a sensor in a test bench for testing the torque of the steering gear, the sensor is directly connected with a product (the steering gear), no transition exists between the sensor and the product, the motor has large rotational inertia, so that the impact on the product is large, the control of a high-precision test motor is complex and difficult, the impact of the equipment per se can interfere with the test data of the product, the fluctuation of the data acquisition of the equipment is large, and the product performance can not be judged.
Disclosure of Invention
The invention aims to provide a small-inertia torque transmission device, which effectively reduces the rotational inertia brought by a rotating part and realizes the stable transmission of torque.
The invention provides a small inertia torque transmission device, which comprises a shell, an output shaft, a first end cover, a second end cover, a first bearing, a second bearing, an inner bushing, an outer bushing, a bearing nut and a retainer ring, wherein the first bearing and the second bearing are sleeved on the output shaft at intervals and are in interference fit with the output shaft, the output shaft penetrates through an axial cavity of the shell, the inner side wall of the axial cavity is in clearance fit with the outer rings of the first bearing and the second bearing, the inner rings of the first bearing and the second bearing are positioned through the inner bushing, the outer rings are positioned through the outer bushing, the first end cover is connected with one end of the shell and positions the outer ring of the second bearing relative to the other side of the outer bushing, the second end cover is connected with the other end of the shell and positions the outer ring of the first bearing relative to the other side of the outer bushing, the bearing nut is sleeved on the output shaft through a threaded structure, the other side, opposite to the inner bushing, of the inner ring of the first bearing is positioned through the check ring, and the other side, opposite to the inner bushing, of the inner ring of the second bearing is positioned through the convex shoulder on the output shaft.
The outside of casing is equipped with the mounting disc, be equipped with the counter sink along circumference even interval on the mounting disc.
The both ends of casing are equipped with first screw hole and second screw hole along circumference even interval respectively, it is equipped with first counter sink to correspond first screw hole on the first end cover, it is equipped with the second counter sink to correspond the second screw hole on the second end cover.
The output shaft is provided with a first assembling surface and a second assembling surface respectively corresponding to the sleeving positions of the first bearing and the second bearing, and a convex shoulder and a threaded section are respectively arranged on the opposite sides of the first assembling surface and the second assembling surface.
The first end cover is provided with a first positioning convex step corresponding to the position of the end face of the outer ring of the second bearing, and the second end cover is provided with a second positioning convex step corresponding to the position of the end face of the outer ring of the first bearing.
And the inner ring of the inner bushing is in clearance fit with the output shaft, and two ends of the inner bushing are respectively supported and positioned with the end face of the inner ring of the first bearing and the end face of the inner ring of the second bearing.
And the outer ring of the outer bushing is in clearance fit with the inner side wall of the shell, and two ends of the outer bushing are respectively supported and positioned with the outer ring end face of the first bearing and the outer ring end face of the second bearing.
The inner ring of the retainer ring is in clearance fit with the output shaft, the inner side end face of the retainer ring is abutted against the end face of the inner ring of the first bearing, and the outer side end face of the retainer ring is abutted against the bearing nut.
Advantageous effects
The invention can effectively reduce the rotational inertia caused by the rotation of the rotating part, and is beneficial to the smooth transmission of the torque of the rotating part, thereby reducing the interference of the self impact of the testing equipment on the test data of the product and being beneficial to improving the accuracy of the torque test of the steering gear.
Drawings
Fig. 1 is a schematic cross-sectional structure of the present invention.
Fig. 2 is a front structural schematic diagram of the housing.
Fig. 3 is a schematic sectional structure view of the housing.
Fig. 4 is a schematic plan view of the output shaft.
Fig. 5 is a front structural diagram of the first end cap.
Fig. 6 is a schematic cross-sectional view of the first end cap.
Fig. 7 is a front structural view of the second end cap.
Fig. 8 is a schematic cross-sectional view of the second end cap.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
A small inertia torque transmitting device as shown in fig. 1 includes a housing 1, an output shaft 2, a first end cap 3, a second end cap 4, a first bearing 5, a second bearing 6, an inner bushing 7, an outer bushing 8, a bearing nut 9, and a retainer ring 10.
The first bearing 5 and the second bearing 6 are arranged on the output shaft 2 at intervals and in a positioning mode, and the first bearing 5 and the second bearing 6 are in interference fit with the output shaft 2. The output shaft 2 passes through an axial cavity 105 of the housing 1, an inner side wall 104 of the axial cavity 105 is in clearance fit with outer rings of the first bearing 5 and the second bearing 6, and when the output shaft 2 is used, two ends of the output shaft 2 are respectively connected with rotating shafts at the upstream and the downstream for transmitting torque. The inner rings of the first bearing 5 and the second bearing 6 are positioned by an inner bushing 7, and the outer rings are positioned by an outer bushing 8. The first end cap 3 is connected to one end of the housing 1 and positions the outer race of the second bearing 6 relative to the other side of the outer bushing 8, and the second end cap 4 is connected to the other end of the housing 1 and positions the outer race of the first bearing 5 relative to the other side of the outer bushing 8. The bearing nut 9 is sleeved on the output shaft 2 through a threaded structure, and the inner ring of the first bearing 5 is positioned relative to the other side of the inner bushing 7 through a retaining ring 10. The inner ring of the second bearing 6 is positioned against the other side of the inner bush 7 by means of a shoulder 201 on the output shaft 2.
As shown in fig. 2 and 3, a mounting plate 106 is disposed on the outer side of the housing 1, and six counter bores 101 are uniformly spaced on the mounting plate 106 along the circumferential direction for fixing with the external device flange. Two ends of the shell 1 are respectively provided with six first threaded holes 102 and six second threaded holes 103 at equal intervals along the circumferential direction.
As shown in fig. 5 and 6, six first counter bores 301 are provided in the first end cap 3 corresponding to the first screw holes 102, and the first end cap 3 is attached to the end of the housing 1 by mounting bolts in the first counter bores 301. The first end cover 3 is provided with a first positioning convex step 302 corresponding to the outer ring end face of the second bearing 6, and when the first end cover 3 is installed on the shell 1, the outer ring end face of the second bearing 6 is limited through the first positioning convex step 302.
As shown in fig. 7 and 8, six second countersunk holes 401 are formed in the second end cap 4 corresponding to the second screw holes 103, and the second end cap 4 is connected to the end of the housing 1 by mounting bolts in the second countersunk holes 401. The position of the second end cover 4 corresponding to the outer ring end face of the first bearing 5 is provided with a second positioning convex step 402, and when the second end cover 4 is installed on the shell 1, the outer ring end face of the first bearing 5 is limited through the second positioning convex step 402.
As shown in fig. 4, the output shaft 2 is provided with a first mounting surface 202 and a second mounting surface 203 corresponding to the mounting positions of the first bearing 5 and the second bearing 6, respectively, and the opposite sides of the first mounting surface 202 and the second mounting surface 203 are provided with a shoulder 201 and a threaded section 204, respectively, and the threaded section 204 is used for connecting the bearing nut 9.
The inner ring of the inner bushing 7 is in clearance fit with the output shaft 2, and two ends of the inner bushing are respectively supported and positioned with the end surface of the inner ring of the first bearing 5 and the end surface of the inner ring of the second bearing 6. The outer ring of the outer bushing 8 is in clearance fit with the inner side wall 104 of the housing 1, and two ends of the outer bushing are respectively supported and positioned with the outer ring end surface of the first bearing 5 and the outer ring end surface of the second bearing 6. The inner ring of the retainer ring 10 is in clearance fit with the output shaft 2, the end surface of the inner side of the retainer ring 10 is pressed against the end surface of the inner ring of the first bearing 5, and the end surface of the outer side of the retainer ring is pressed against the bearing nut 9.
Claims (8)
1. The utility model provides a little inertia torque transmission device, includes casing (1), output shaft (2), first end cover (3), second end cover (4), first bearing (5), second bearing (6), interior bush (7), outer liner (8), bearing nut (9) and retaining ring (10), its characterized in that: the first bearing (5) and the second bearing (6) are sleeved on the output shaft (2) at intervals and positioned and are in interference fit with the output shaft (2), the output shaft (2) penetrates through an axial cavity (105) of the shell (1), an inner side wall (104) of the axial cavity (105) is in clearance fit with outer rings of the first bearing (5) and the second bearing (6), inner rings of the first bearing (5) and the second bearing (6) are positioned through an inner bushing (7), outer rings of the first bearing and the second bearing are positioned through an outer bushing (8), the first end cover (3) is connected with one end of the shell (1) and positions the outer ring of the second bearing (6) at the other side of the outer bushing (8), the second end cover (4) is connected with the other end of the shell (1) and positions the outer ring of the first bearing (5) at the other side of the outer bushing (8), the bearing nut (9) is sleeved on the output shaft (2) through a threaded structure, the other side of the inner ring of the first bearing (5) relative to the inner bushing (7) is positioned through the retaining ring (10), and the other side of the inner ring of the second bearing (6) relative to the inner bushing (7) is positioned through the convex shoulder (201) on the output shaft (2).
2. A low inertia torque transmitting device as claimed in claim 1, wherein: the outer side of the shell (1) is provided with a mounting disc (106), and countersunk holes (101) are uniformly arranged on the mounting disc (106) at intervals along the circumferential direction.
3. A low inertia torque transmitting device as claimed in claim 1, wherein: the two ends of the shell (1) are respectively provided with a first threaded hole (102) and a second threaded hole (103) at uniform intervals along the circumferential direction, a first countersunk hole (301) is formed in the first end cover (3) corresponding to the first threaded hole (102), and a second countersunk hole (401) is formed in the second end cover (4) corresponding to the second threaded hole (103).
4. A low inertia torque transmitting device as claimed in claim 1, wherein: the output shaft (2) is provided with a first assembling surface (202) and a second assembling surface (203) corresponding to the sleeving positions of the first bearing (5) and the second bearing (6), and the opposite sides of the first assembling surface (202) and the second assembling surface (203) are provided with a convex shoulder (201) and a threaded section (204) respectively.
5. A low inertia torque transmitting device as claimed in claim 1, wherein: the first end cover (3) is provided with a first positioning convex step (302) corresponding to the position of the outer ring end face of the second bearing (6), and the second end cover (4) is provided with a second positioning convex step (402) corresponding to the position of the outer ring end face of the first bearing (5).
6. A low inertia torque transmitting device as claimed in claim 1, wherein: the inner ring of the inner bushing (7) is in clearance fit with the output shaft (2), and two ends of the inner bushing are respectively supported and positioned with the end face of the inner ring of the first bearing (5) and the end face of the inner ring of the second bearing (6).
7. A low inertia torque transmitting device as claimed in claim 1, wherein: and the outer ring of the outer bushing (8) is in clearance fit with the inner side wall (104) of the shell (1), and two ends of the outer bushing are respectively supported and positioned with the outer ring end face of the first bearing (5) and the outer ring end face of the second bearing (6).
8. A low inertia torque transmitting device as claimed in claim 1, wherein: the inner ring of the retainer ring (10) is in clearance fit with the output shaft (2), the end surface of the inner side of the retainer ring (10) is pressed against the end surface of the inner ring of the first bearing (5), and the end surface of the outer side of the retainer ring is pressed against the bearing nut (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011494300.1A CN112664576A (en) | 2020-12-17 | 2020-12-17 | Small inertia torque transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011494300.1A CN112664576A (en) | 2020-12-17 | 2020-12-17 | Small inertia torque transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112664576A true CN112664576A (en) | 2021-04-16 |
Family
ID=75404559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011494300.1A Pending CN112664576A (en) | 2020-12-17 | 2020-12-17 | Small inertia torque transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112664576A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114088375A (en) * | 2021-11-25 | 2022-02-25 | 长光卫星技术有限公司 | Solar wing load simulation device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204975568U (en) * | 2015-06-30 | 2016-01-20 | 宁波市鄞州泰盛数控设备有限公司 | Gear machine's positioner |
| CN105332115A (en) * | 2014-05-30 | 2016-02-17 | 舍弗勒技术股份两合公司 | Bearing assembly |
| CN205765581U (en) * | 2016-05-19 | 2016-12-07 | 衢州职业技术学院 | A kind of Numerical Control Spherical Surface roller bearing track grinding machine spindle |
| CN207711102U (en) * | 2018-01-16 | 2018-08-10 | 江苏中科晶元信息材料有限公司 | A kind of scroll saw rotation for producing GaAs twists device main axle structure |
| CN110578780A (en) * | 2019-08-07 | 2019-12-17 | 山东大学 | Dual-drive sliding screw transmission pair and micro-feeding device formed by same |
-
2020
- 2020-12-17 CN CN202011494300.1A patent/CN112664576A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332115A (en) * | 2014-05-30 | 2016-02-17 | 舍弗勒技术股份两合公司 | Bearing assembly |
| CN204975568U (en) * | 2015-06-30 | 2016-01-20 | 宁波市鄞州泰盛数控设备有限公司 | Gear machine's positioner |
| CN205765581U (en) * | 2016-05-19 | 2016-12-07 | 衢州职业技术学院 | A kind of Numerical Control Spherical Surface roller bearing track grinding machine spindle |
| CN207711102U (en) * | 2018-01-16 | 2018-08-10 | 江苏中科晶元信息材料有限公司 | A kind of scroll saw rotation for producing GaAs twists device main axle structure |
| CN110578780A (en) * | 2019-08-07 | 2019-12-17 | 山东大学 | Dual-drive sliding screw transmission pair and micro-feeding device formed by same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114088375A (en) * | 2021-11-25 | 2022-02-25 | 长光卫星技术有限公司 | Solar wing load simulation device |
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Application publication date: 20210416 |