CN214384221U - Ball cage coupling, dynamic seal assembly and hub reduction gear - Google Patents
Ball cage coupling, dynamic seal assembly and hub reduction gear Download PDFInfo
- Publication number
- CN214384221U CN214384221U CN202023110445.5U CN202023110445U CN214384221U CN 214384221 U CN214384221 U CN 214384221U CN 202023110445 U CN202023110445 U CN 202023110445U CN 214384221 U CN214384221 U CN 214384221U
- Authority
- CN
- China
- Prior art keywords
- ball cage
- shell
- ring
- hub
- seal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Gear Transmission (AREA)
Abstract
The utility model provides a ball cage coupling, a dynamic seal assembly and a wheel reduction gear, which belong to the technical field of shuttle car accessories, wherein the ball cage coupling and the dynamic seal assembly comprise a ball cage coupling, a positioning component and a spherical seal; the ball cage coupler comprises a ball cage sealing cover and a ball cage transmission assembly arranged in the ball cage sealing cover, and is respectively connected with the fixed part and the rotating part of the hub reduction gear through the positioning assembly; the positioning assembly comprises a hexagon nut, a locking sheet and a positioning protection clamping ring. After the ball cage coupler and the dynamic seal assembly are installed on the hub reduction gear, the ball cage sealing cover is in threaded connection with the fixed portion, the compression amount of the spherical seal is adjusted through the length adjustment of the ball cage sealing cover, the locking piece is a plane fusion V-shaped surface, the adjusting angle of the ball cage sealing cover is 30 degrees, the adjusting angle is reduced, the adjusting precision can be effectively improved, the spherical seal is prevented from being excessively stressed, and the service life of the spherical seal is prolonged.
Description
Technical Field
The utility model belongs to the technical field of shuttle car accessory, a ball cage shaft coupling and dynamic seal assembly and wheel reduction gear are specifically disclosed.
Background
The shuttle car is a trackless rubber-tyred vehicle for realizing short-distance rapid transportation in a coal mine, is used as one of important devices for short-wall mechanized mining, and has the main function of transferring coal of a continuous coal mining machine to a feeding crusher. The wheel reduction gear of a shuttle car that the deceleration system of present shuttle car adopted the patent number ZL 201010290044.4 to provide more, and this wheel reduction gear is a special reduction gear based on the ball cage shaft coupling, and its the biggest difference that is different from vehicle steering drive axle lies in that the ball cage shaft coupling is built-in the reduction gear, has reduced the volume of reduction gear like this, but has brought the difficult problem for sealed the same. Based on the large and frequent swing of the corner range of the ball cage coupling, the sealing of the ball cage coupling needs to have the following characteristics: (1) the height of the spherical lip of the sealing element is matched with the height of the outer spherical surface of the ball cage sealing cover, so that an effective and reliable sealing surface is formed; (2) the sealing element is in a compression state and a swing state in a static state, the sealing element is in a tension and compression state, and the sealing material needs smaller swing running resistance to prevent the sealing element from being broken; (3) the seal is difficult to replace and requires a long service life.
At present, the using condition and the defect of the conventional spherical seal at the position are described in detail in a ZL 200920270324.1 dynamic seal device and a wheel hub speed reducer with the device, and are not stated again.
ZL 200920270324.1 dynamic seal device and have device's wheel reduction gear discloses a dynamic seal device, and this seal device has compensation compression volume and heat dispersion, has prolonged sealed life, but the seal device that this patent relates to still has the shortcoming:
1) the connection amount between the ball cage coupler and the fixing component is not easy to adjust in the installation process, and the sealing element is easy to be compressed excessively;
2) the sealing member is exposed to the outside for a long time and is easily polluted.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a ball cage shaft coupling and dynamic seal assembly and wheel reduction gear to improve the background art the problem.
In order to achieve the purpose, the utility model provides a ball cage coupling and dynamic seal assembly, which comprises a ball cage coupling, a positioning component and a spherical seal; the ball cage coupler comprises a ball cage sealing cover and a ball cage transmission assembly arranged in the ball cage sealing cover, and is respectively connected with the fixed part and the rotating part of the hub reduction gear through the positioning assembly; the positioning assembly comprises a hexagon nut, a locking sheet and a positioning protection clamping ring; the shaft sleeve of the ball cage sealing cover is in threaded connection with the fixed part; the hexagonal nut is sleeved on the shaft sleeve of the ball cage sealing cover in a threaded manner and is abutted against the fixed part; the locking sheet is integrally formed by plastic and comprises a connecting plate and a clamping plate which are vertical to each other; the connecting plate is fixed on the fixing part, an isosceles triangular groove with the apex angle of 120 degrees is arranged at the joint of the connecting plate and the clamping plate, and the isosceles triangular groove is clamped on the nut angle of the hexagon nut; the two clamping plates are arranged on two sides of the isosceles triangular groove and are provided with inclined planes attached to the nut surface of the hexagonal nut; the positioning protection clamping ring comprises two half rings, each half ring comprises a connecting half ring and a limiting half ring which are perpendicular to each other, the connecting half rings are fixed outside the rotating part, and the limiting half rings clamp the spherical surface of the ball cage sealing cover; the spherical seal is disposed between the rotating portion and the spherical surface of the ball cage seal cover.
Furthermore, the inner wall of the spherical seal is provided with two sealing oil lips and a dustproof lip, and the outer wall of the spherical seal is provided with a sealing ring mounting groove and a V-shaped spring mounting groove; a sealing ring which is contacted with the rotating part is arranged in the sealing ring mounting groove; and a V-shaped spring is arranged in the V-shaped spring mounting groove.
Furthermore, a connecting hole is formed in the connecting plate of the locking piece and is fixed on the fixing part through a screw; the connecting semi-ring of the positioning protection snap ring is provided with a connecting hole and is fixed on the rotating part through a screw.
Further, the spherical seal is made of polytetrafluoroethylene materials.
The utility model also provides a wheel reduction unit, which comprises a fixed part, a rotating part, the ball cage coupling and the dynamic seal assembly; the fixing part comprises a hub, a first bevel gear shaft, a second bevel gear and a second bevel gear shaft; the rotating part comprises a sun wheel shaft, a sun wheel, a planet wheel shaft, a planet carrier, a first shell and a second shell; the first bevel gear is positioned in the wheel hub and fixedly provided with a first bevel gear shaft in a penetrating way, the first bevel gear shaft is rotatably connected with the wheel hub, and two ends of the first bevel gear shaft respectively extend out of the wheel hub and are connected with the transmission shaft; the second bevel gear is positioned in the hub, vertically meshed with the first bevel gear and fixedly provided with a second bevel gear shaft in a penetrating way; the second bevel gear shaft is rotationally connected with the hub and penetrates out of the hub cover to be connected with the sun gear shaft through the ball cage coupling; a sun wheel is fixed on the sun wheel shaft and is meshed with a plurality of planet wheels, the planet wheels rotate around the sun wheel, and a planet wheel shaft is fixedly arranged in each planet wheel in a penetrating manner; the planet carrier comprises a first frame body and a second frame body which are fixedly connected with two ends of the planet wheel shaft respectively, the first frame body is rotatably connected in the first shell, and the second frame body is fixedly connected with the second shell; the first shell is connected with the two groups of connecting lug plates of the wheel hub through a joint bearing and a pin shaft, the first shell is connected with the second shell through a floating seal, and a first end cover is arranged between the first shell and the spherical surface of the ball cage sealing cover; the shaft sleeve of the ball cage sealing cover is in threaded connection with the hub cover; the hexagonal nut is abutted against the outside of the hub cover; the connecting semi-ring of the positioning protection snap ring is fixed outside the first end cover; a spherical seal is disposed between the first end cap and the spherical surface of the ball cage seal cover.
Furthermore, the rotating part also comprises an inner gear ring, a static friction plate, a dynamic friction plate, a piston, a reset screw and a reset spring; the inner gear ring is meshed with the planet gear and fixedly arranged between the first shell and the second frame body, the outer wall of the inner gear ring is provided with a static friction plate mounting groove, and a static friction plate is mounted in the static friction plate mounting groove; the inner wall of the second shell is provided with a dynamic friction plate mounting groove, and a dynamic friction plate is mounted in the dynamic friction plate mounting groove; a plurality of static friction plates and dynamic friction plates are sequentially and alternately arranged to form a friction pair, and oil liquid is filled between the friction pairs; the piston is arranged in a sealing cavity which is formed by enclosing the first shell, the floating seal and the friction pair in a sliding manner; the reset screw penetrates through the piston in a sliding manner, the end part of the reset screw is fixed on the first shell, and a reset spring is sleeved between the nut and the piston; and the first shell is provided with a hydraulic oil duct communicated with the seal cavity.
Furthermore, the rotating part also comprises an annular transition connecting plate and a limiting steel sheet; the transition connecting plate surrounds the outer circumferential surface of the second frame body and corresponds to the position of the friction pair, the outer end surface of the transition connecting plate is connected with the outer end surface of the second frame body through a round pin, and a limiting ring is arranged between the inner end surface of the transition connecting plate and the inner end surface of the second frame body; the limiting steel sheet is arranged in a space enclosed by the friction pair, the second shell, the inner gear ring, the second frame body and the transition connecting plate, the positioning pin penetrates through the transition connecting plate and the limiting steel sheet to be connected with the second shell, and the screw penetrates through the round pin and the transition connecting plate to compress the limiting steel sheet.
Further, a second end cover is fixed on the outer end face of the second frame body.
The utility model discloses following beneficial effect has:
after installing above-mentioned ball cage shaft coupling and dynamic seal assembly on the hub reduction gear, ball cage sealed cowling and fixed part threaded connection, the accessible is adjusted the length adjustment of ball cage sealed cowling and is to the sealed decrement of spherical, the locking plate fuses the V profile for the plane, when the ball cage sealed cowling is rotatory, two cardboards both can block on hexagon nut's nut angle, also can laminate on hexagon nut's nut face, make ball cage sealed cowling's angle of regulation be 30 degrees, angle of regulation's reduction, can effectively improve the regulation precision, prevent that spherical seal from being oppressed excessively, extension spherical seal's life. The positioning protection snap ring can prevent external pollutants from damaging the seal, and the semi-ring design is adopted, so that the installation and the disassembly are convenient.
Drawings
FIG. 1 is a schematic view of the installation of a ball cage coupling and dynamic seal assembly;
FIG. 2 is a schematic view of the installation of the hex nut and locking tab of FIG. 1;
FIG. 3 is a schematic structural view of the locking piece of FIG. 1;
FIG. 4 is a schematic view of the installation of the positioning and protection snap ring and the spherical seal of FIG. 1;
FIG. 5 is a schematic view of the spherical seal of FIG. 1;
FIG. 6 is an external view of the hub reduction gear;
FIG. 7 is a cross-sectional view of the wheel hub reduction unit of FIG. 6 taken along a vertical centerline;
FIG. 8 is a cross-sectional view of the wheel reduction unit of FIG. 6 taken along a horizontal centerline;
fig. 9 is a partially enlarged view of a braking portion in the wheel hub reduction gear shown in fig. 6.
Wherein, the names corresponding to the reference numbers are:
1-a ball cage coupling; 1.1-ball cage sealing cover; 1.2-a ball cage transmission component; 2-spherical sealing; 3-a hexagonal nut; 4-a locking tab; 5-positioning a protective snap ring; 6-sealing ring; 7-V-shaped springs;
101-a hub; 101.1-hub cap; 102-a first bevel gear; 103-a first bevel gear shaft; 104-a second bevel gear; 105-a second bevel gear shaft; 106-sun gear shaft; 107-sun gear; 108-planet wheel; 109-planet wheel shaft; 110.1-first frame; 110.2-second frame; 111-a first housing; 111.1-hydraulic gallery; 112-a second housing; 113-ring gear; 114-static friction plate; 115-dynamic friction plate; 116-a piston; 117-reduction screw; 118-a return spring; 119-spherical plain bearing; 120-pin shaft; 121-floating seal; 122-a first end cap; 123-a transition connection board; 124-limiting steel sheets; 125-round pin; 126-a stop collar; 127-a locating pin; 128-screw; 129-O ring; 130-a second end cap; 131-driving shaft connecting flange.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The embodiment provides a ball cage coupler and dynamic seal assembly, which comprises a ball cage coupler 1, a positioning assembly and a spherical seal 2; the ball cage coupler 1 comprises a ball cage sealing cover 1.1 and a ball cage transmission assembly 1.2 arranged in the ball cage sealing cover 1.1, and is respectively connected with the fixed part and the rotating part of the hub reduction gear through a positioning assembly 1; the positioning assembly comprises a hexagon nut 3, a locking sheet 4 and a positioning protection clamping ring 5; the shaft sleeve of the ball cage sealing cover 1.1 is in threaded connection with the fixed part; the hexagonal nut 3 is sleeved on the shaft sleeve of the ball cage sealing cover 1.1 in a threaded manner and is abutted against the fixed part; the locking sheet 4 is integrally formed by plastic and comprises a connecting plate and a clamping plate which are vertical to each other; the connecting plate is fixed on the fixing part, an isosceles triangular groove with an apex angle of 120 degrees is arranged at the joint of the connecting plate and the clamping plate, and the isosceles triangular groove is clamped on the nut angle of the hexagonal nut 3; the two clamping plates are arranged on two sides of the isosceles triangular groove and are provided with inclined planes attached to the nut surface of the hexagonal nut 3; the positioning protection clamping ring 5 comprises two half rings, each half ring comprises a connecting half ring and a limiting half ring which are perpendicular to each other, the connecting half rings are fixed outside the rotating part, and the limiting half rings clamp the spherical surface of the ball cage sealing cover 1.1; the spherical seal 2 is arranged between the rotating part and the spherical surface of the ball cage boot 1.1.
Ball cage sealed cowling 1.1 and fixed part threaded connection, the accessible is adjusted the length adjustment of ball cage sealed cowling 1.1 and is to the compressive capacity of spherical seal 2, locking plate 4 fuses the V profile for the plane, when ball cage sealed cowling 1.1 is rotatory, two cardboards both can block on hexagon nut 3's nut angle, also can laminate on hexagon nut 3's nut face, the angle of regulation that makes ball cage sealed cowling 1.1 is 30 degrees, angle of regulation's reduction, can effectively improve the regulation precision, prevent that spherical seal 2 from being oppressed excessively, extension spherical seal 2's life. The positioning protection snap ring 5 can prevent external pollutants from damaging the seal, and adopts a semi-ring design, so that the installation and the disassembly are convenient.
Furthermore, the inner wall of the spherical seal 2 is provided with two sealing oil lips and a dustproof lip, and the outer wall is provided with a sealing ring mounting groove and a V-shaped spring mounting groove; a sealing ring 6 which is contacted with the rotating part is arranged in the sealing ring mounting groove; and a V-shaped spring 7 is arranged in the V-shaped spring mounting groove. The V-shaped spring 7 is a compensator, compensates the compression amount and has strong compensation capability. The spherical seal 2 is made of polytetrafluoroethylene material and has high wear resistance. When the abrasion amount of the spherical seal 2 is increased and the V-shaped spring 7 is not enough to compensate the compression amount, the seal compression amount is readjusted by adjusting the threaded connection length of the ball cage seal cover 1.1 and the fixed part.
Furthermore, a connecting hole is formed in the connecting plate of the locking piece 4 and is fixed on the fixing part through a screw; the connecting semi-ring of the positioning protection snap ring 5 is provided with a connecting hole and fixed on the rotating part through a screw.
The embodiment provides a hub reduction gear, which comprises a fixed part, a rotating part, the ball cage coupling and a dynamic seal assembly, wherein the ball cage coupling is arranged on the fixed part; the fixing part comprises a hub 101, a first bevel gear 102, a first bevel gear shaft 103, a second bevel gear 104 and a second bevel gear shaft 105; the rotating part comprises a sun wheel shaft 106, a sun wheel 107, a planet wheel 108, a planet wheel shaft 109, a planet carrier, a first shell 111 and a second shell 112; the first bevel gear 102 is positioned in the hub 101 and fixedly provided with a first bevel gear shaft 103 in a penetrating way, the first bevel gear shaft 103 is rotatably connected with the hub 101, and two ends of the first bevel gear shaft 103 respectively extend out of the hub 101 and are connected with the transmission shaft; the second bevel gear 104 is positioned in the hub 101, vertically meshed with the first bevel gear 102 and fixedly provided with a second bevel gear shaft 105 in a penetrating way; the second bevel gear shaft 105 is rotationally connected with the hub 101, penetrates out of the hub cover 101.1 and is connected with the sun gear shaft 106 through the ball cage coupler 1; a sun wheel 107 is fixed on the sun wheel shaft 106, the sun wheel 107 is meshed with a plurality of planet wheels 108, the planet wheels 108 rotate around the sun wheel 107, and a planet wheel shaft 109 is fixedly arranged in the planet wheels 108 in a penetrating manner; the planet carrier comprises a first carrier body 110.1 and a second carrier body 110.2 which are fixedly connected with two ends of the planet wheel shaft 109 respectively, the first carrier body 110.1 and the second carrier body 110.2 are designed in an integral manner, the first carrier body 110.1 is rotatably connected in the first outer shell 111, and the second carrier body 110.2 is fixedly connected with the second outer shell 112; the first shell 111 is connected with two groups of connecting lug plates of the hub 101 through a knuckle bearing 119 and a pin shaft 120, the first shell 111 is connected with the second shell 112 through a floating seal 121, and a first end cover 122 is arranged between the first shell 111 and the spherical surface of the ball cage sealing cover 1.1; the shaft sleeve of the ball cage sealing cover 1.1 is in threaded connection with the hub cover 101.1; the hexagonal nut 3 is abutted against the outside of the hub cover 101.1; the connecting half ring of the positioning protection snap ring 5 is fixed outside the first end cover 122; the spherical seal 2 is disposed between the first end cap 122 and the spherical surface of the ball cage seal cage 1.1.
Further, the rotating part also includes a ring gear 113, a static friction plate 114, a dynamic friction plate 115, a piston 116, a return screw 117, and a return spring 118; an annular gear 113 is meshed with the planet gear 108 and is fixedly arranged between the first outer shell 111 and the second frame body 110.2, a static friction plate mounting groove is formed in the outer wall of the annular gear, and a static friction plate 114 is mounted in the static friction plate mounting groove through a spline; the inner wall of the second outer shell 112 is provided with a dynamic friction plate mounting groove, and a dynamic friction plate 115 is mounted in the dynamic friction plate mounting groove through a spline; a plurality of static friction plates 114 and dynamic friction plates 115 are alternately arranged in sequence to form a friction pair, and oil is filled between the friction pair; the piston 116 is slidably arranged in a sealing cavity enclosed by the first outer shell 111, the floating seal 121 and the friction pair; a reset screw 117 penetrates through the piston 116 in a sliding manner, the end part of the reset screw is fixed on the first shell 111, and a reset spring 118 is sleeved between the nut and the piston 116; the first housing 111 is provided with a hydraulic oil passage 111.1 communicating with the sealed cavity.
The traveling process of the wheel reduction gear is as follows: the motor drives a first bevel gear shaft 103 in the wheel-side braking speed reducer to rotate through a first-stage speed reducer and a transmission shaft, the first bevel gear shaft is reversed through a first bevel gear 102, a sun gear 107 is driven to rotate through a ball cage coupling 1, a planet gear 108 rotates around the sun gear 107 to drive a planet carrier to rotate, a first frame body 110.1 rotates in a first outer shell 111, a second frame body 110.2 drives a second outer shell 112 to rotate, a dynamic friction plate 115 rotates relative to a static friction plate 114, and a tire is installed on the second outer shell 112.
The braking process of the wheel hub speed reducer is as follows: the hydraulic system sends hydraulic oil to the position of the piston 116 through the hydraulic oil duct 111.1, pushes the piston 116 to move towards the friction pair, extrudes the static friction plate 114 and the dynamic friction plate 115, the friction force borne by the dynamic friction plate 115 is gradually increased, the rotating speed of the second shell 112 and the tire is gradually reduced, and the speed reduction is realized; the oil pressure continues to increase, the second housing 112 and the tire stop rotating, and braking is achieved; the brake is released and hydraulic oil flows back to the hydraulic system and the return spring 118 pushes the piston 116 to return.
Further, the rotating part also comprises an annular transition connecting plate 123 and a limiting steel sheet 124; the transition connecting plate 123 surrounds the outer circumferential surface of the second frame body 110.2 and corresponds to the position of the friction pair, the outer end surface of the transition connecting plate 123 is connected with the outer end surface of the second frame body 110.2 through a round pin 125, and a limiting ring 126 is arranged between the inner end surface of the transition connecting plate 123 and the inner end surface of the second frame body 110.2; the limiting steel sheet 124 is arranged in a space enclosed by the friction pair, the second shell 112, the inner gear ring 113, the second frame body 110.2 and the transition connecting plate 123, the positioning pin 127 penetrates through the transition connecting plate 123 and the limiting steel sheet 124 to be connected with the second shell 112, and the screw 128 penetrates through the round pin 125 and the transition connecting plate 123 to press the limiting steel sheet 124. The planet carrier and the transition connecting plate 123 adopt a split design, so that the installation and the maintenance of the hub reduction gear are facilitated, the replacement of the friction plate can be realized only by dismounting the tire, and the dismounting of the whole hub reduction gear due to the abrasion of the friction plate is avoided.
Further, an O-ring 129 for preventing leakage of the hydraulic oil is provided between the piston 116 and the first housing 111.
Further, a second end cap 130 is fixed on the outer end surface of the second frame body 110.2.
Further, the first bevel gear shaft 103 is rotatably connected with the hub 101 through a bearing, and a transmission shaft connecting flange 131 for connecting with a transmission shaft is arranged at two ends of the first bevel gear shaft; the second bevel gear shaft 105 is rotationally connected with the hub 101 through a bearing, and a hub cover 101.1 is arranged outside the bearing; the first frame 110.1 is rotatably connected in the first housing 111 by a bearing.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (8)
1. A ball cage coupling and dynamic seal assembly is characterized by comprising a ball cage coupling, a positioning assembly and a spherical seal;
the ball cage coupler comprises a ball cage sealing cover and a ball cage transmission assembly arranged in the ball cage sealing cover, and is respectively connected with the fixed part and the rotating part of the hub reduction gear through positioning assemblies;
the positioning assembly comprises a hexagon nut, a locking sheet and a positioning protection clamping ring;
the shaft sleeve of the ball cage sealing cover is in threaded connection with the fixed part;
the hexagonal nut is sleeved on the shaft sleeve of the ball cage sealing cover in a threaded manner and abuts against the outside of the fixing part;
the locking sheet is integrally formed by plastic and comprises a connecting plate and a clamping plate which are perpendicular to each other;
the connecting plate is fixed on the fixing part, an isosceles triangular groove with an apex angle of 120 degrees is arranged at the joint of the connecting plate and the clamping plate, and the isosceles triangular groove is clamped on a nut angle of the hexagon nut;
the two clamping plates are arranged on two sides of the isosceles triangular groove and are provided with inclined planes attached to the nut surface of the hexagonal nut;
the positioning protection clamping ring comprises two half rings, each half ring comprises a connecting half ring and a limiting half ring which are perpendicular to each other, the connecting half rings are fixed outside the rotating part, and the limiting half rings clamp the spherical surface of the ball cage sealing cover;
the spherical seal is disposed between the rotating portion and the spherical surface of the ball cage seal cage.
2. The ball cage coupling and dynamic seal assembly as claimed in claim 1, wherein the inner wall of the spherical seal is provided with two sealing oil lips and a dust lip, and the outer wall is provided with a sealing ring mounting groove and a V-shaped spring mounting groove;
a sealing ring which is contacted with the rotating part is arranged in the sealing ring mounting groove;
and a V-shaped spring is arranged in the V-shaped spring mounting groove.
3. The ball cage coupling and dynamic seal assembly of claim 2 wherein the connecting plate of the locking tab is provided with a connecting hole which is fixed to the fixed portion by a screw;
the connecting semi-ring of the positioning protection snap ring is provided with a connecting hole and is fixed on the rotating part through a screw.
4. The ball cage coupling and dynamic seal assembly of claim 1, wherein the spherical seal is made of polytetrafluoroethylene material.
5. A hub reduction gear comprising a stationary portion, a rotating portion, and the ball cage coupling and dynamic seal assembly of any of claims 1-4;
the fixing part comprises a hub, a first bevel gear shaft, a second bevel gear and a second bevel gear shaft;
the rotating part comprises a sun wheel shaft, a sun wheel, a planet wheel shaft, a planet carrier, a first shell and a second shell;
the first bevel gear is positioned in the wheel hub, a first bevel gear shaft is fixedly arranged in a penetrating manner, the first bevel gear shaft is rotatably connected with the wheel hub, and two ends of the first bevel gear shaft respectively extend out of the wheel hub and are connected with the transmission shaft;
the second bevel gear is positioned in the hub, vertically meshed with the first bevel gear and fixedly provided with a second bevel gear shaft in a penetrating manner;
the second bevel gear shaft is rotatably connected with the hub and penetrates out of the hub cover to be connected with the sun gear shaft through the ball cage coupling;
a sun wheel is fixed on the sun wheel shaft and is meshed with a plurality of planet wheels, the planet wheels rotate around the sun wheel, and a planet wheel shaft is fixedly arranged in each planet wheel in a penetrating manner;
the planet carrier comprises a first frame body and a second frame body which are fixedly connected with two ends of the planet wheel shaft respectively, the first frame body is rotatably connected in the first shell, and the second frame body is fixedly connected with the second shell;
the first shell is connected with the two groups of connecting lug plates of the wheel hub through a joint bearing and a pin shaft, the first shell is connected with the second shell through a floating seal, and a first end cover is arranged between the first shell and the spherical surface of the ball cage seal cover;
the shaft sleeve of the ball cage sealing cover is in threaded connection with the hub cover;
the hexagonal nut is abutted against the outside of the hub cover;
the connecting semi-ring of the positioning protection snap ring is fixed outside the first end cover;
a spherical seal is disposed between the first end cap and the spherical surface of the ball cage seal cover.
6. The hub reduction gear according to claim 5, characterized in that the rotating portion further comprises an inner ring gear, a static friction plate, a dynamic friction plate, a piston, a return screw, and a return spring;
the inner gear ring is meshed with the planet gear and fixedly arranged between the first shell and the second frame body, the outer wall of the inner gear ring is provided with a static friction plate mounting groove, and a static friction plate is mounted in the static friction plate mounting groove;
the inner wall of the second shell is provided with a dynamic friction plate mounting groove, and a dynamic friction plate is mounted in the dynamic friction plate mounting groove;
a plurality of static friction plates and dynamic friction plates are sequentially and alternately arranged to form a friction pair, and oil liquid is filled between the friction pairs;
the piston is arranged in a sealing cavity which is formed by enclosing the first shell, the floating seal and the friction pair in a sliding manner;
the reset screw penetrates through the piston in a sliding mode, the end portion of the reset screw is fixed on the first shell, and a reset spring is sleeved between the nut and the piston;
and the first shell is provided with a hydraulic oil duct communicated with the seal cavity.
7. The hub reduction gear of claim 6, wherein the rotating portion further comprises an annular transition connecting plate and a limiting steel sheet;
the transition connecting plate surrounds the outer circumferential surface of the second frame body and corresponds to the position of the friction pair, the outer end surface of the transition connecting plate is connected with the outer end surface of the second frame body through a round pin, and a limiting ring is arranged between the inner end surface of the transition connecting plate and the inner end surface of the second frame body;
the limiting steel sheet is arranged in a space enclosed by the friction pair, the second shell, the inner gear ring, the second frame body and the transition connecting plate, the positioning pin penetrates through the transition connecting plate and the limiting steel sheet to be connected with the second shell, and the screw penetrates through the round pin and the transition connecting plate to compress the limiting steel sheet.
8. The hub reduction unit of claim 7, wherein a second end cap is secured to the outer end face of the second frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023110445.5U CN214384221U (en) | 2020-12-22 | 2020-12-22 | Ball cage coupling, dynamic seal assembly and hub reduction gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023110445.5U CN214384221U (en) | 2020-12-22 | 2020-12-22 | Ball cage coupling, dynamic seal assembly and hub reduction gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214384221U true CN214384221U (en) | 2021-10-12 |
Family
ID=77990837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023110445.5U Active CN214384221U (en) | 2020-12-22 | 2020-12-22 | Ball cage coupling, dynamic seal assembly and hub reduction gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214384221U (en) |
-
2020
- 2020-12-22 CN CN202023110445.5U patent/CN214384221U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4582107A (en) | Vehicle tire inflation-deflation mechanism | |
| CN111152837B (en) | Double-wheel steering driving wheel | |
| RU2657716C1 (en) | Enhanced hub assembly with the possibility to supply air for central pumping wheels in motion | |
| CN214384221U (en) | Ball cage coupling, dynamic seal assembly and hub reduction gear | |
| CN202065366U (en) | Slipping type ball cage coupling | |
| CN201739370U (en) | Integral type shaft head and ball cage coupler with mandril | |
| US8960689B1 (en) | High misalignment wheel drive | |
| CN112519571B (en) | Dynamic seal adjustable shuttle car wheel edge brake speed reducer and shuttle car traveling system | |
| CN107458461B (en) | Integral steering knuckle for front steering drive axle of heavy off-road vehicle and assembly thereof | |
| CN111873732B (en) | Macpherson type independent suspension device and vehicle | |
| CN210623425U (en) | Rotating shaft braking device with safety function | |
| CN212202825U (en) | Straight joint body | |
| CN112440734B (en) | Safety shuttle wheel side braking deceleration system | |
| US4202560A (en) | Speedometer drive gear assembly for a centerline steering wheel assembly | |
| CN220227825U (en) | Transmission assembly and crushing apparatus | |
| CN112228515B (en) | Engineering vehicle wheel edge speed reducer and mining dump truck | |
| CN112455219B (en) | Safety wheel-side braking shuttle vehicle traveling system | |
| CN214324882U (en) | Hub reduction gear and transmission shaft assembly | |
| CN220948265U (en) | Sealing structure for relatively-connected steering equipment | |
| CN109488707B (en) | Rear axle assembly | |
| CN220060494U (en) | Walking and parking integrated wet brake | |
| CN220416062U (en) | Maintenance-free brake adjusting arm | |
| CN109505899B (en) | Front axle assembly with normally closed wet brake | |
| CN218408508U (en) | Sealing device, steering drive axle and amphibious vehicle | |
| CN213619219U (en) | Novel drive axle assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |