CN114224079B - Compact vertical shaft sleeve shaft structure - Google Patents
Compact vertical shaft sleeve shaft structure Download PDFInfo
- Publication number
- CN114224079B CN114224079B CN202111467823.1A CN202111467823A CN114224079B CN 114224079 B CN114224079 B CN 114224079B CN 202111467823 A CN202111467823 A CN 202111467823A CN 114224079 B CN114224079 B CN 114224079B
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- contact ball
- shaft
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- angular contact
- bearing assembly
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B37/00—Tables adapted for other particular purposes
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B11/00—Tables with tops revolvable on vertical spindles
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B13/00—Details of tables or desks
- A47B13/02—Underframes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The utility model provides a vertical axle sleeve axle construction of compact, includes the base, the minor axis is installed through four-point contact ball turntable bearing to the base upper end, installs the circular grating on the minor axis, install the major axis through second angular contact ball bearing assembly in the minor axis, first mesa is installed to the minor axis upper end, be equipped with first moment motor, second moment motor, first angular contact ball bearing assembly, encoder in the base, the stator of first moment motor is connected with the base, and the rotor of first moment motor passes through the rotor seat to be connected with the minor axis, the stator of second moment motor passes through the motor keysets to be connected with the base, and the rotor of second moment motor is fixed in on the major axis, first angular contact ball bearing assembly suit is on the major axis, and first angular contact ball bearing assembly passes through the lower carriage to be connected with the base, the encoder is installed in the lower extreme of major axis, the second mesa is installed at the major axis top. The invention has simple and compact structure, reduces the axial dimension of the structure and has low production cost.
Description
Technical Field
The invention belongs to the field of a guide head test turntable, and relates to a compact vertical shaft sleeve shaft structure.
Background
The seeker test turntable often requires that the seeker and the target simulator be simultaneously mounted on one turntable to achieve coaxial independent rotation, with the axis being a "sleeve axis" support structure.
The existing shaft sleeve shaft structure is mostly realized by adopting angular contact ball bearings, for example, chinese patent application publication No. 210741513U discloses a shaft sleeve shaft structure formed by adopting two opposite angle contact ball bearings, and the structure needs to add a long spacer between a pair of angle contact ball bearings to lengthen the supporting length of the two sets of bearings so as to achieve the purpose of improving the supporting rigidity of a shaft system, so that the shaft system supporting structure is relatively huge, has high cost and occupies more axial space. The Chinese patent with the publication number of CN212407353U discloses a shaft sleeve shaft structure which adopts a set of turntable bearing to support an outer ring shaft system, the outer ring shaft system is simplified, but a pair of upper bearing components of an inner ring shaft system are still added with long spacers, a torque motor is connected with a main shaft through an expansion sleeve, the expansion process of the expansion sleeve can lead the main shaft to deform so as to squeeze an angular contact ball bearing in the main shaft, so that the accuracy of the shaft system is reduced, the friction torque of the shaft system is increased, and the service life of the bearing is reduced.
Disclosure of Invention
The invention aims to provide a compact vertical shaft sleeve shaft structure so as to solve the problems in the background technology.
The technical scheme who adopts in order to realize above-mentioned purpose is, a compact vertical axle sleeve axle construction, including the base, the minor axis is installed through four-point contact ball turntable bearing to the base upper end, installs the circular grating on the minor axis, install the major axis through second angular contact ball bearing assembly in the minor axis, first mesa is installed to the minor axis upper end, be equipped with first moment motor, second moment motor, first angular contact ball bearing assembly, encoder in the base, the stator of first moment motor is connected with the base, and the rotor of first moment motor passes through the rotor seat to be connected with the minor axis, the stator of second moment motor passes through the motor keysets and is connected with the base, and the rotor of second moment motor is fixed in on the major axis, first angular contact ball bearing assembly suit is on the major axis, and first angular contact ball bearing assembly passes through the lower carriage and is connected with the base, the encoder is installed in the lower extreme of major axis, the second mesa is installed at the major axis top.
Further, the outer ring of the four-point contact ball turntable bearing is fixed on the base, and the short shaft is fixed on the inner ring of the four-point contact ball turntable bearing and rotates along with the inner ring.
Further, the main bodies of the first angular contact ball bearing assembly and the second angular contact ball bearing assembly are a pair of angular contact ball bearings which are installed back to back, the first angular contact ball bearing assembly is installed inside the base through the lower support, and the second angular contact ball bearing assembly is installed in the short shaft.
Advantageous effects
Compared with the prior art, the invention has the following advantages.
1. According to the invention, a large hollow four-point contact ball turntable bearing is adopted for supporting, and only one set of bearing can provide axial, radial and overturning load effects, so that the shafting structure is greatly simplified;
2. compared with a shafting formed by adopting two pairs of angle contact ball bearings, the structure is simple and compact, and the reliability is high; the axial dimension of the structure is reduced, and the production cost is relatively low.
Drawings
The present invention is described in further detail below with reference to the accompanying drawings.
FIG. 1 is a cross-sectional view of the structure of the present invention;
FIG. 2 is a schematic illustration of the external configuration of the present invention;
FIG. 3 is a cross-sectional view of a second angular contact ball bearing assembly according to the present invention;
FIG. 4 is a schematic view of a four-point contact ball turntable bearing in accordance with the present invention;
fig. 5 is a schematic view of the structure of the first mesa in the present invention.
Detailed Description
The invention is further described below with reference to examples and figures.
As shown in fig. 1-5, a compact vertical shaft sleeve shaft structure comprises a base 1, a short shaft 10 is installed at the upper end of the base 1 through a four-point contact ball turntable bearing 13, a circular grating 11 is installed on the short shaft 10, a long shaft 7 is installed in the short shaft 10 through a second angular contact ball bearing assembly 9, a first table top 12 is installed at the upper end of the short shaft 10, a first torque motor 15, a second torque motor 5, a first angular contact ball bearing assembly 3 and an encoder 2 are arranged in the base 1, a stator of the first torque motor 15 is connected with the base 1, a rotor of the first torque motor 15 is connected with the short shaft 10 through a rotor seat 14, a stator of the second torque motor 5 is connected with the base 1 through a motor adapter plate 6, a rotor of the second torque motor 5 is fixed on the long shaft 7, the first angular contact ball bearing assembly 3 is sleeved on the long shaft 7, the first angular contact ball bearing assembly 3 is connected with the base 1 through a lower bracket 4, the encoder 2 is installed at the lower end of the long shaft 7, and a second table top 8 is installed at the top of the long shaft 7.
The outer ring of the four-point contact ball turntable bearing 13 is fixed on the base 1, and the short shaft 10 is fixed on the inner ring of the four-point contact ball turntable bearing 13 and rotates along with the inner ring.
The main bodies of the first angular contact ball bearing assembly 3 and the second angular contact ball bearing assembly 9 are a pair of angular contact ball bearings which are installed back to back, the first angular contact ball bearing assembly 3 is installed inside the base 1 through the lower bracket 4, and the second angular contact ball bearing assembly 9 is installed inside the short shaft 10.
In the invention, the short shaft 10 is arranged on the base 1 through a four-point contact ball turntable bearing 13, the first table top 12 is fixed on the short shaft 10, the circular grating 11 is arranged on the short shaft 10, the stator of the first moment motor 15 is arranged on the base 1, the rotor is connected to the short shaft 10 through a rotor seat 14, and the short shaft 10 is driven to rotate so as to drive the first table top 12 to rotate, so that a first closed loop shafting is formed.
The long shaft 7 is installed in the short shaft 10 through the second angular contact ball bearing assembly 9, the first angular contact ball bearing assembly 3 is installed at the lower end of the long shaft 7, the second torque motor 5 is installed in the middle of the long shaft 7 and drives the long shaft 7 to rotate, the second table top 8 is further enabled to rotate, the encoder 2 installed at the lower end of the long shaft 7 measures the rotation angle of the long shaft 7, and a second closed-loop shafting is formed.
The first closed-loop shaft system is a hollow shaft system, the second closed-loop shaft system rotates in the first closed-loop shaft system, the two sets of shaft systems coaxially and independently rotate in space, the first table top 12 and the second table top 8 can independently rotate at random at 360 degrees, or one shaft is static and one shaft rotates, so that the rotation test of a tested product and a target is met.
The short shaft 10 is arranged on the base 1 through a large hollow four-point contact ball turntable bearing 13, the first table top 12 is arranged at the upper end of the short shaft 10, the lower end of the short shaft 10 is connected with a rotor of a first torque motor 15 through a rotor seat 14, a circular grating 11 for feeding back the rotation angle of the short shaft is arranged on the short shaft 10, and the first torque motor 15 drives a first closed-loop shafting to rotate so as to realize the rotation of the first table top 12.
The second angular contact ball bearing assembly 9 is installed in the short shaft 10, the first angular contact ball bearing assembly 3 is installed in the base 1 through the lower support 4, the long shaft 7 is supported through the first angular contact ball bearing assembly 3 and the second angular contact ball bearing assembly 9 to form a rotary shaft system, the second table top 8 is installed at the upper end of the long shaft 7, the stator of the second torque motor 5 is installed in the base 1 through the motor adapter plate 6, the rotor of the second torque motor 5 is fixed in the middle of the long shaft 7, the encoder 2 is installed at the lower end of the long shaft 7, the second torque motor 5 drives the second table top 8 to rotate through the long shaft 7 to form a second closed-loop shaft system, and the second closed-loop shaft system and the first closed-loop shaft system are coaxial in space and rotate independently.
The invention has two sets of coaxial independent rotating shafting: the first closed-loop shafting and the second closed-loop shafting; the first closed loop system is formed by: the outer ring of the four-point contact ball turntable bearing 13 is fixed on the base 1, the short shaft 10 is fixed on the inner ring of the four-point contact ball turntable bearing 13 to rotate along with the inner ring, the first table top 12 is fixed on the short shaft 10, the stator of the first torque motor 15 is fixed on the base 1, and the rotor of the first torque motor 15 is fixed on the short shaft 10 through the rotor seat 14; the rotor of the first torque motor 15 rotates to drive the short shaft 10 to rotate, and then drives the first table top 12 to rotate, and the circular grating 11 mounted on the short shaft 10 feeds back the rotation angle of the short shaft 10 to form a first closed-loop shafting.
The second closed loop system is formed by: the second angular contact ball bearing assembly 9 is characterized in that the main body is a pair of angular contact ball bearings which are installed back to back and are installed in the short shaft 10; the main body of the first angular contact ball bearing assembly 3 is a pair of angular contact ball bearings which are installed back to back, the main body is installed inside the base 1 through the lower bracket 4, the long shaft 7 is installed in the second angular contact ball bearing assembly 9 of the first angular contact ball bearing assembly 3, and a rotating shaft is formed by rotating along with the angular contact ball bearings; the upper end of the long shaft 7 is provided with a second table top 8, a stator of the second torque motor 5 is arranged in the base 1 through the motor adapter plate 6, a rotor of the second torque motor 5 is fixed in the middle of the long shaft 7, the encoder 2 is arranged at the lower end of the long shaft 7 and feeds back the corner of the long shaft 7, and the second torque motor 5 drives the second table top 8 to rotate through the long shaft 7 to form a second closed-loop rotary shaft system.
The first table top 12 arranged on the first closed-loop shaft system and the second table top 8 arranged on the second closed-loop shaft system are mutually independent and rotate around the same shaft in space, the two table tops can be respectively provided with the seeker and the target, and independent or simultaneous rotation of the seeker and the target is realized.
Claims (3)
1. The utility model provides a compact vertical axle sleeve axle structure, includes base (1), its characterized in that, short axle (10) are installed through four-point contact ball turntable bearing (13) in base (1) upper end, install round grating (11) on short axle (10), install major axis (7) through second angular contact ball bearing assembly (9) in short axle (10), first mesa (12) are installed to short axle (10) upper end, be equipped with first moment motor (15) in base (1), second moment motor (5), first moment contact ball bearing assembly (3), encoder (2), the stator of first moment motor (15) is connected with base (1), the rotor of first moment motor (15) is connected with short axle (10) through rotor seat (14), the stator of second moment motor (5) is connected with base (1) through motor keysets (6), the rotor of second moment motor (5) is fixed in major axis (7), first moment contact ball bearing assembly (3) suit is on major axis (7), first moment motor (3) are connected with base (2) through bearing bracket (4), a second table top (8) is arranged at the top of the long shaft (7); the outer ring of the four-point contact ball turntable bearing (13) is fixed on the base (1), the short shaft (10) is fixed on the inner ring of the four-point contact ball turntable bearing (13) to rotate along with the inner ring, the first table top (12) is fixed on the short shaft (10), the stator of the first torque motor (15) is fixed on the base (1), the rotor of the first torque motor (15) is fixed on the short shaft (10) through the rotor seat (14), and the rotor of the first torque motor (15) drives the short shaft (10) to rotate in a rotating mode, so that the first table top (12) is driven to rotate; the round grating (11) arranged on the short shaft (10) feeds back the rotation angle of the short shaft (10) so as to form a first closed-loop shafting; the second angular contact ball bearing assembly (9) is a pair of angular contact ball bearings which are installed back to back and are installed in the short shaft (10); the first angular contact ball bearing assembly (3) is a pair of angular contact ball bearings which are installed back to back and are installed inside the base (1) through the lower bracket (4); the long shaft (7) is arranged in a second angular contact ball bearing assembly (9) of the first angular contact ball bearing assembly (3) and forms a rotating shaft along with the rotation of the angular contact ball bearing; the upper end of the long shaft (7) is provided with a second table top (8), a stator of the second torque motor (5) is arranged in the base (1) through a motor adapter plate (6), a rotor of the second torque motor (5) is fixed in the middle of the long shaft (7), the encoder (2) is arranged at the lower end of the long shaft (7) and feeds back the corner of the long shaft (7), and the second torque motor (5) drives the second table top (8) to rotate through the long shaft (7) to form a second closed-loop rotary shaft system; the first table top (12) arranged on the first closed-loop shaft system and the second table top (8) arranged on the second closed-loop shaft system rotate around the same shaft independently in space.
2. A compact vertical bushing spindle arrangement according to claim 1, characterized in that the outer ring of the four-point contact ball turntable bearing (13) is fixed to the base (1), and the stub shaft (10) is fixed to the inner ring of the four-point contact ball turntable bearing (13) and rotates with the inner ring.
3. The compact vertical shaft sleeve shaft structure according to claim 1, wherein the main bodies of the first angular contact ball bearing assembly (3) and the second angular contact ball bearing assembly (9) are a pair of angular contact ball bearings which are installed back to back, the first angular contact ball bearing assembly (3) is installed inside the base (1) through the lower bracket (4), and the second angular contact ball bearing assembly (9) is installed inside the short shaft (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111467823.1A CN114224079B (en) | 2021-12-03 | 2021-12-03 | Compact vertical shaft sleeve shaft structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111467823.1A CN114224079B (en) | 2021-12-03 | 2021-12-03 | Compact vertical shaft sleeve shaft structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114224079A CN114224079A (en) | 2022-03-25 |
| CN114224079B true CN114224079B (en) | 2023-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111467823.1A Active CN114224079B (en) | 2021-12-03 | 2021-12-03 | Compact vertical shaft sleeve shaft structure |
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| Country | Link |
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| CN (1) | CN114224079B (en) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008098846A2 (en) * | 2007-02-14 | 2008-08-21 | Ina Drives & Mechatronics Gmbh & Co. Ohg | Electric direct drive device, particularly for a turntable |
| JPWO2012008438A1 (en) * | 2010-07-14 | 2013-09-09 | 日立建機株式会社 | Power transmission device |
| US9879766B2 (en) * | 2015-04-28 | 2018-01-30 | Nidec Corporation | Rotary transmitting assembly, device for converting rotary motion to linear motion, and motor |
| CN106970363B (en) * | 2017-05-11 | 2023-06-16 | 九江精密测试技术研究所 | Triaxial antenna test turntable system with low reflection characteristic |
| CN109855868B (en) * | 2017-11-30 | 2021-01-22 | 洛阳轴承研究所有限公司 | Dynamic test method and test equipment for axial stiffness of bearing |
| CN208689113U (en) * | 2018-08-13 | 2019-04-02 | 九江精密测试技术研究所 | A kind of compact high-precision polarization turntable of adjustment height |
| CN209273391U (en) * | 2018-12-27 | 2019-08-20 | 四川九洲电器集团有限责任公司 | A kind of uniaxially double frame turntables |
| CN209715424U (en) * | 2019-04-08 | 2019-12-03 | 中国工程物理研究院总体工程研究所 | A kind of geotechnique's drum centrifuge device |
| CN109833982B (en) * | 2019-04-08 | 2024-01-30 | 中国工程物理研究院总体工程研究所 | Geotechnical drum type centrifuge device |
| DE202019107166U1 (en) * | 2019-12-20 | 2020-03-20 | Atlas Copco Industrial Technique Ab | Power tool including a constant velocity joint |
| CN213744478U (en) * | 2020-09-21 | 2021-07-20 | 洛阳洛轴精密轴承有限公司 | Spindle bearing for economical CT machine |
| CN112065866A (en) * | 2020-09-23 | 2020-12-11 | 九江精密测试技术研究所 | High-precision 'shaft sleeve shaft' double-shaft system structure for seeker test turntable |
-
2021
- 2021-12-03 CN CN202111467823.1A patent/CN114224079B/en active Active
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| Publication number | Publication date |
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| CN114224079A (en) | 2022-03-25 |
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