CN214217257U - Guide wheel device using air bearing - Google Patents
Guide wheel device using air bearing Download PDFInfo
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- CN214217257U CN214217257U CN202023048679.1U CN202023048679U CN214217257U CN 214217257 U CN214217257 U CN 214217257U CN 202023048679 U CN202023048679 U CN 202023048679U CN 214217257 U CN214217257 U CN 214217257U
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- end cover
- air
- bearing
- positioning
- coil
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Abstract
The utility model relates to a guide wheel device applying an air bearing, which comprises a wheel body, a middle shaft, the air bearing and a parking safety component, wherein the middle shaft comprises a square section and a round section, the parking safety component comprises a permanent magnet sleeve, the coil, first end cover and joint cover, the wheel body passes through the rotatable installation of air bearing on the axis, first end cover slides along the square section, the joint cover slides along the circle section and is connected with air bearing detachably, first end cover adorns admittedly on the joint cover, the permanent magnet sleeve is adorned admittedly on the axis, the coil is adorned admittedly in the joint cover and the coil twines along the permanent magnet sleeve axial direction, have the clearance between coil and the permanent magnet sleeve, coil electric connection has the power, the power can change the current direction, the permanent magnet sleeve axial force application in the coil and then impel joint cover and first end cover along axis axial slip after the coil circular telegram, rotate lightly and the security is high.
Description
Technical Field
The utility model relates to a track guide wheel technical field especially relates to an use air bearing's guide wheel device.
Background
The guide wheel is applied to the track, and the existing guide wheel usually adopts a deep groove ball bearing as a part for supporting the wheel body and reducing friction during rotation. The prior guiding wheel structure generally comprises a wheel body, a screw, an end cover, a sealing gasket, a deep groove ball bearing and a middle shaft which are sequentially sleeved from outside to inside.
The existing guide wheels mainly have the following disadvantages:
1. because of the adoption of the deep groove ball bearing, the central part of the wheel body has larger volume and the whole structure is not compact enough;
2. the vibration and noise of the deep groove ball bearing are large, and are particularly obvious in the later use period;
3. the deep groove ball bearing has large frictional resistance, short service life and difficult replacement.
And the existing guide wheel device does not have the parking protection function, and the vehicle is easy to slide when being stopped on a slope.
SUMMERY OF THE UTILITY MODEL
For overcoming the technical defect that prior art exists, the utility model provides an use air bearing's guide wheel device rotates lightly and the security is high.
The utility model discloses a technical solution be: a guide wheel device applying an air bearing comprises a wheel body, a middle shaft, the air bearing and a parking safety component, the middle shaft comprises a square section and a round section, the parking safety component comprises a permanent magnet sleeve, a coil, a first end cover and a clamping sleeve, the wheel body is rotatably arranged on the middle shaft through an air bearing, the first end cover slides along the square section, the clamping sleeve slides along the circular section and is detachably connected with the air bearing, the first end cover is fixedly arranged on the clamping sleeve, the permanent magnet sleeve is fixedly arranged on the middle shaft, the coil is fixedly arranged in the clamping sleeve and is wound along the axial direction of the permanent magnet sleeve, a gap is arranged between the coil and the permanent magnet sleeve, the coil is electrically connected with a power supply, the power supply can change the current direction, after the coil is electrified, the permanent magnet sleeve applies force to the coil in the axial direction so as to push the clamping sleeve and the first end cover to slide along the axial direction of the middle shaft.
As a further improvement, the clamping sleeve is provided with a plurality of positioning protrusions near one end of the air bearing, and the air bearing is provided with a plurality of positioning grooves corresponding to the positioning protrusions, and each positioning protrusion is embedded into the corresponding positioning groove.
As a further improvement of the utility model, the interior an organic whole of axis is equipped with first air flue and the axis has the positioning disc that perpendicular to axis set up outward, air bearing includes radial positioning component and has the axial positioning component with the second air flue that is linked together with the air supply, axial positioning component adorns admittedly on the wheel body and cooperates with the axial positioning axis with the positioning disc, radial positioning component adorns admittedly in the wheel body and with the axis between leave the bearing chamber that is linked together with first air flue with the radial positioning axis, the joint cover is connected with radial positioning component detachably.
As a further improvement, the axial positioning subassembly includes the grip block of adorning on the wheel body admittedly through the centre gripping bolt, grip block an organic whole is equipped with two air-cushion plates, two the air-cushion plate is located the location disc both ends respectively, seted up in the grip block the second air flue, the second air flue has two location ventholes that extend to respectively on two air-cushion plates, two the location venthole sets up relatively and two location ventholes are directional location disc both ends respectively.
As a further improvement, the wheel body center department is equipped with the installation cavity, the radial positioning subassembly includes bearing cylinder, second end cover and third end cover, bearing cylinder installs and establishes at the epaxial in installation cavity and bearing cylinder jacket, second end cover and third end cover lock solid respectively on the wheel body at installation cavity both ends and with the sealed cooperation in bearing cylinder's both ends, enclose between bearing cylinder, second end cover, third end cover and the axis and become the bearing cavity, the joint cover is connected with second end cover detachably.
As a further improvement, all be equipped with the sealing washer between second end cover and the bearing section of thick bamboo and between third end cover and the bearing section of thick bamboo, each the sealing washer is used for sealed bearing chamber.
As a further improvement, be equipped with a plurality of orifices on the bearing section of thick bamboo, enclose into the gas collecting cavity between bearing section of thick bamboo and the installation cavity wall, communicate through each orifice between bearing chamber and the gas collecting cavity, the second air flue is linked together through transition hole on the wheel body and gas collecting cavity.
As a further improvement of the utility model, each the orifice is evenly encircled and is established on bearing cylinder is global.
The utility model has the advantages that: the middle shaft comprises a square section and a round section, the parking safety assembly comprises a permanent magnet sleeve, a coil, a first end cover and a clamping sleeve, the wheel body is rotatably arranged on the middle shaft through an air bearing, the wheel body is arranged on the middle shaft through the air bearing, the friction resistance is reduced, the service life is prolonged due to small friction, the rotation is convenient, the first end cover slides along the square section, the clamping sleeve slides along the round section and is detachably connected with the air bearing, the first end cover is fixedly arranged on the clamping sleeve, the permanent magnet sleeve is fixedly arranged on the middle shaft, the coil is fixedly arranged in the clamping sleeve and is wound along the axial direction of the permanent magnet sleeve, a gap is formed between the coil and the permanent magnet sleeve, the coil is electrically connected with a power supply, the current direction of the power supply can be changed, the coil applies force to the permanent magnet sleeve axially after being electrified, a magnetic field is generated after the coil is electrified, the effect of the permanent magnet sleeve is exerted in the magnetic field generated by the coil, and the effect of the force is mutual, the coil also receives the telescopic power of permanent magnet, and coil atress promotes joint sleeve and first end cover along axis endwise slip, because first end cover slides along the square section, first end cover can not rotate for the axis when sliding along the axis, and the coil circular telegram during parking promotes joint sleeve and air bearing cooperation, and air bearing just passes through joint sleeve and first end cover and axis rigid connection when the parking like this, has guaranteed during the parking that the wheel body does not rotate, and the security is high.
Drawings
Fig. 1 is a schematic overall sectional view of the present invention.
Fig. 2 is an enlarged schematic view of a point a in fig. 1.
Fig. 3 is an enlarged schematic view of B in fig. 1.
FIG. 4 is a cross-sectional view of the wheel body.
Fig. 5 is a perspective view of the bottom bracket structure.
Description of reference numerals:
1. a wheel body; 11. a square section; 12. a round section; 13. a mounting cavity;
2. a middle shaft; 21. a first air passage; 22. positioning the disc;
3. an air bearing; 31. a positioning groove; 32. a radial positioning assembly; 321. a bearing cylinder; 322. a second end cap; 3211. an orifice; 323. a third end cap; 324. a seal ring; 33. an axial positioning assembly; 331. a clamping block; 3311. an air cushion plate; 3312. a second air passage; 3313. positioning an air outlet; 332. clamping the bolt;
4. a parking safety component; 41. a permanent magnet sleeve; 42. a coil; 43. a first end cap; 44. a clamping sleeve; 441. positioning the projection;
5. a bearing chamber;
6. a gas collection cavity.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1-5, the embodiment provides a guide wheel device using an air bearing, including a wheel body 1, a middle shaft 2, an air bearing 3, and a parking safety component 4, where the middle shaft 2 includes a square section 11 and a circular section 12, the middle shaft 2 is fixedly mounted on a bracket (not shown in the bracket) of a track, the parking safety component 4 includes a permanent magnet sleeve 41, a coil 42, a first end cover 43, and a snap sleeve 44, the wheel body 1 is rotatably mounted on the middle shaft 2 through the air bearing 3, the wheel body 1 is mounted on the middle shaft 2 through the air bearing 3 to reduce friction resistance, the service life is improved due to small friction, the rotation is convenient, the first end cover 43 slides along the square section 11, the first end cover 43 is circumferentially fixed on the square section 11, the snap sleeve 44 slides along the circular section 12 and is detachably connected with the air bearing 3, the first end cover 43 is fixedly mounted on the snap sleeve 44, the permanent magnet sleeve 41 is fixedly mounted on the middle shaft 2, the coil 42 is fixedly arranged in the clamping sleeve 44, the coil 42 is wound along the axial direction of the permanent magnet sleeve 41, a gap is formed between the coil 42 and the permanent magnet sleeve 41, the coil 42 is electrically connected with a power supply, the power supply can change the current direction, the coil 42 is axially applied with force to the permanent magnet sleeve 41 after being electrified, a magnetic field is generated after the coil 42 is electrified, the permanent magnet sleeve 41 is acted by force in the magnetic field generated by the coil 42, the coil 42 is also acted by the force of the permanent magnet sleeve 41, the coil 42 pushes the clamping sleeve 44 and the first end cover 43 to axially slide along the central shaft 2 under the force of the coil 42, the first end cover 43 slides along the square section 11, the first end cover 43 cannot rotate relative to the central shaft 2 when sliding along the central shaft 2, the coil 42 is electrified to push the clamping sleeve 44 to be matched with the air bearing 3 during parking, so that the air bearing 3 is rigidly connected with the central shaft 2 through the clamping sleeve 44 and the first end cover 43 during parking, the wheel body 1 is ensured not to rotate during parking, and the safety is high. A plurality of positioning protrusions 441 are arranged at one end of the clamping sleeve 44 close to the air bearing 3, a plurality of positioning grooves 31 corresponding to the positioning protrusions 441 are arranged on the air bearing 3, specifically, each positioning groove 31 is arranged on the second end cover 322, and each positioning protrusion 441 is embedded into the corresponding positioning groove 31.
The middle shaft 2 is internally and integrally provided with a first air passage 21, the middle shaft 2 is externally provided with a positioning disc 22 which is vertical to the axis of the middle shaft 2, the air bearing 3 comprises a radial positioning component 32 and an axial positioning component 33 which is provided with a second air passage 3312 communicated with an air source, the axial positioning component 33 is fixedly arranged on the wheel body 1 and is matched with the positioning disc 22 to axially position the middle shaft 2, the air source supplies air to the second air passage 3312, when the axial positioning component 33 is matched with the positioning disc 22, the air flow in the second air passage 3312 is blown to the positioning disc 22, so that a high-pressure air flow area is formed between the axial positioning component 33 and the positioning disc 22, the axial positioning component 33 is axially positioned on the middle shaft 2, and it is noted that the axial positioning component 33 is not in direct contact with the positioning disc 22, the friction during axial positioning is small, the radial positioning component 32 is fixedly arranged in the wheel body 1 and is provided with a bearing cavity 5 which is communicated with the first air passage 21 between the middle shaft 2 to radially position the middle shaft 2, the air source is communicated with the first air passage 21, a high-pressure air flow region is formed in the bearing cavity 5 by the air source, the radial positioning component 32 is separated from the middle shaft 2 through the high-pressure air flow in the bearing cavity 5, friction is reduced, and the clamping sleeve 44 is detachably connected with the radial positioning component 32.
The axial positioning component 33 includes a clamping block 331 fixed on the wheel body 1 by a clamping bolt 332, the clamping block 331 is integrally provided with two air cushion plates 3311, the two air cushion plates 3311 are respectively located at two ends of the positioning disk 22, a second air duct 3312 is provided in the clamping block 331, the second air duct 3312 is provided with two positioning air outlet holes 3313 respectively extending to the two air cushion plates 3311, the two positioning air outlet holes 3313 are oppositely arranged, the two positioning air outlet holes 3313 are respectively directed to two ends of the positioning disk 22, an air source is communicated with the second air duct 3312 and sprays air flow out from the two positioning air outlet holes 3313, the two air cushion plates 3311 respectively form high pressure air flow areas with the positioning disk 22, and the axial positioning component 33 is axially positioned, because there is no direct contact between the two air cushion plates 3311 and the positioning disk 22, the friction is reduced.
The center of the wheel body 1 is provided with an installation cavity 13, the radial positioning component 32 comprises a bearing cylinder 321, a second end cover 322 and a third end cover 323, the bearing cylinder 321 is installed in the installation cavity 13, the bearing cylinder 321 is sleeved on the central shaft 2, the second end cover 322 and the third end cover 323 are respectively locked on the wheel body 1 at two ends of the installation cavity 13 and are in sealing fit with two ends of the bearing cylinder 321, a bearing cavity 5 is enclosed by the bearing cylinder 321, the second end cover 322, the third end cover 323 and the central shaft 2, the clamping sleeve 44 is detachably connected with the second end cover 322, sealing rings 324 are respectively arranged between the second end cover 322 and the bearing cylinder 321 and between the third end cover 323 and the bearing cylinder 321, each sealing ring 324 is used for sealing the bearing cavity 5, the first air passage 21 pumps high-pressure air into the bearing cavity 5, and a high-pressure air flow area is formed between the central shaft 2 and the bearing cylinder 321, so that the central shaft 2 and the bearing cylinder 321 cannot be in direct contact, and friction is reduced.
The bearing cylinder 321 is provided with a plurality of orifices 3211, each orifice 3211 is uniformly arranged on the circumferential surface of the bearing cylinder 321 in a surrounding manner, a gas collecting cavity 6 is enclosed between the bearing cylinder 321 and the wall of the mounting cavity 13, the bearing cavity 5 and the gas collecting cavity 6 are communicated through each orifice 3211, the second gas channel 3312 is communicated with the gas collecting cavity 6 through a transition hole on the wheel body 1, the gas in the bearing cavity 5 flows into the gas collecting cavity 6 through each orifice 3211 and then flows into the second gas channel 3312 through the gas collecting cavity 6, the second gas channel 3312 reuses the gas flow exhausted from the gas collecting cavity 6, and the gas flow in the gas collecting cavity 6 is blown to the positioning disc 22 through the positioning gas outlet holes 3313, so as to form a high-pressure gas flow area between the positioning disc 22 and the air cushion plate 3311, and realize axial positioning.
Having shown and described the fundamental principles and the principal features of the invention and its advantages, it will be understood by those skilled in the art that the present invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (8)
1. A guide wheel device applying an air bearing is characterized by comprising a wheel body, a middle shaft, the air bearing and a parking safety component, the middle shaft comprises a square section and a round section, the parking safety component comprises a permanent magnet sleeve, a coil, a first end cover and a clamping sleeve, the wheel body is rotatably arranged on the middle shaft through an air bearing, the first end cover slides along the square section, the clamping sleeve slides along the circular section and is detachably connected with the air bearing, the first end cover is fixedly arranged on the clamping sleeve, the permanent magnet sleeve is fixedly arranged on the middle shaft, the coil is fixedly arranged in the clamping sleeve and is wound along the axial direction of the permanent magnet sleeve, a gap is arranged between the coil and the permanent magnet sleeve, the coil is electrically connected with a power supply, the power supply can change the current direction, after the coil is electrified, the permanent magnet sleeve applies force to the coil in the axial direction so as to push the clamping sleeve and the first end cover to slide along the axial direction of the middle shaft.
2. The guide wheel device using the air bearing as claimed in claim 1, wherein a plurality of positioning protrusions are formed at one end of the clamping sleeve close to the air bearing, a plurality of positioning grooves corresponding to the positioning protrusions are formed on the air bearing, and the positioning protrusions are inserted into the corresponding positioning grooves.
3. The guide wheel device using the air bearing as claimed in claim 1, wherein a first air passage is integrally formed in the center shaft, a positioning disc is arranged outside the center shaft and perpendicular to the axis of the center shaft, the air bearing comprises a radial positioning component and an axial positioning component, the axial positioning component is provided with a second air passage communicated with an air source, the axial positioning component is fixedly arranged on the wheel body and is matched with the positioning disc to axially position the center shaft, the radial positioning component is fixedly arranged in the wheel body, a supporting cavity communicated with the first air passage is reserved between the radial positioning component and the center shaft to radially position the center shaft, and the clamping sleeve is detachably connected with the radial positioning component.
4. The guide wheel device using the air bearing as claimed in claim 3, wherein the axial positioning assembly includes a clamping block fixed on the wheel body by a clamping bolt, the clamping block is integrally provided with two air cushion plates, the two air cushion plates are respectively located at two ends of the positioning disk, the clamping block is internally provided with the second air passage, the second air passage is provided with two positioning air outlets respectively extending to the two air cushion plates, the two positioning air outlets are oppositely arranged, and the two positioning air outlets are respectively directed to two ends of the positioning disk.
5. The air bearing applied guide wheel device according to claim 3, wherein a mounting cavity is formed in the center of the wheel body, the radial positioning component comprises a bearing cylinder, a second end cover and a third end cover, the bearing cylinder is mounted in the mounting cavity and sleeved on the central shaft, the second end cover and the third end cover are respectively locked on the wheel body at two ends of the mounting cavity and are in sealing fit with two ends of the bearing cylinder, the bearing cavity is defined by the bearing cylinder, the second end cover, the third end cover and the central shaft, and the clamping sleeve is detachably connected with the second end cover.
6. The air bearing applied guide wheel device as claimed in claim 5, wherein sealing rings are arranged between the second end cover and the supporting cylinder and between the third end cover and the supporting cylinder, and each sealing ring is used for sealing the supporting cavity.
7. The guide wheel device using the air bearing as claimed in claim 5, wherein the bearing cylinder is provided with a plurality of orifices, a gas collection chamber is defined between the bearing cylinder and the wall of the installation chamber, the bearing chamber and the gas collection chamber are communicated through the orifices, and the second gas channel is communicated with the gas collection chamber through a transition hole on the wheel body.
8. The guide wheel device using the air bearing as claimed in claim 7, wherein the orifice holes are uniformly formed around the circumference of the bearing cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023048679.1U CN214217257U (en) | 2020-12-17 | 2020-12-17 | Guide wheel device using air bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023048679.1U CN214217257U (en) | 2020-12-17 | 2020-12-17 | Guide wheel device using air bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214217257U true CN214217257U (en) | 2021-09-17 |
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ID=77703311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023048679.1U Active CN214217257U (en) | 2020-12-17 | 2020-12-17 | Guide wheel device using air bearing |
Country Status (1)
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|---|---|
| CN (1) | CN214217257U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113915331A (en) * | 2021-09-26 | 2022-01-11 | 奇瑞汽车股份有限公司 | Parking device and gearbox |
-
2020
- 2020-12-17 CN CN202023048679.1U patent/CN214217257U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113915331A (en) * | 2021-09-26 | 2022-01-11 | 奇瑞汽车股份有限公司 | Parking device and gearbox |
| CN113915331B (en) * | 2021-09-26 | 2022-08-12 | 奇瑞汽车股份有限公司 | Parking device and gearbox |
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