CN214404353U - Anti-loosening structure of joint bearing of hub reduction gear and hub reduction gear - Google Patents
Anti-loosening structure of joint bearing of hub reduction gear and hub reduction gear Download PDFInfo
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- CN214404353U CN214404353U CN202023110493.4U CN202023110493U CN214404353U CN 214404353 U CN214404353 U CN 214404353U CN 202023110493 U CN202023110493 U CN 202023110493U CN 214404353 U CN214404353 U CN 214404353U
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Abstract
The utility model provides an anti-loose structure of a joint bearing of a wheel reduction gear and the wheel reduction gear, which belongs to the technical field of wheel reduction gears, and the anti-loose structure comprises a supporting cylinder and a jacking screw; the supporting cylinder is arranged in a joint bearing mounting hole of the wheel-side speed reducer, the circumferential surface is provided with an arc groove, the circumferential surface between the arc groove and the inner end surface is a threaded surface, and the circumferential surface between the arc groove and the outer end surface is a smooth surface; the outer end face of the self-supporting cylinder of the jacking screw penetrates through the arc groove, and the end part of the jacking screw is located in the threaded surface. This anti loosening structure can reuse many times under the prerequisite of not destroying the support cylinder, need not to set up the baffle, brings conveniently for the maintenance of hub reduction gear, maintenance.
Description
Technical Field
The utility model belongs to the technical field of wheel reduction gear, a wheel reduction gear joint bearing's anti loosening structure 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. Patent No. ZL 200710062217.5 discloses a walking steering device of rubber-tyred shuttle car, wherein the outer end of joint bearing is provided with the backup pad that is used for pushing up joint bearing in the hub reduction gear, then welds the baffle on wheel hub's connection otic placode, realizes the fixed of backup pad, and backup pad and baffle constitute joint bearing's anti loosening structure, as shown in fig. 1. However, when the speed reducer is overhauled and maintained, the baffle needs to be cut and welded again, and inconvenience is brought.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a wheel reduction gear joint bearing's anti loosening structure and wheel reduction gear to improve the background art the problem.
In order to achieve the purpose, the utility model provides an anti-loosening structure of a joint bearing of a wheel reduction gear, which comprises a supporting cylinder and a jacking screw; the supporting cylinder is arranged in a joint bearing mounting hole of the wheel-side speed reducer, the circumferential surface is provided with an arc groove, the circumferential surface between the arc groove and the inner end surface is a threaded surface, and the circumferential surface between the arc groove and the outer end surface is a smooth surface; the outer end face of the self-supporting cylinder of the jacking screw penetrates through the arc groove, and the end part of the jacking screw is located in the threaded surface.
Furthermore, an oil filling hole is formed between the inner end face and the outer end face of the supporting cylinder, and an oil filling plug is arranged in the oil filling hole.
Furthermore, the number of the jacking screws is two, and the jacking screws are symmetrically arranged on two sides of the symmetry axis of the arc groove.
Further, the support cylinder and the tightening screw are both made of metal.
The utility model also provides a hub reduction gear, including wheel hub, first bevel gear axle, second bevel gear axle, sun gear, planet wheel axle, planet carrier, first shell and 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 wheel hub, vertically meshed with the first bevel gear, fixedly provided with a second bevel gear shaft in a penetrating way, and rotatably connected with the wheel hub and connected with the sun wheel shaft through a 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 a planet wheel shaft respectively, the first frame body is rotatably connected in a first shell, the first shell is connected with two groups of connecting lug plates of a wheel hub through a joint bearing and a pin shaft, the second frame body is fixedly connected with a second shell, and the first shell is connected with the second shell through a floating seal; the anti-loosening structure of the wheel-side reducer knuckle bearing is arranged in the knuckle bearing mounting hole of the connecting lug plate.
Furthermore, the hub reduction gear 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.
Further, a first end cover is arranged between the first shell and the ball cage coupler; and a second end cover is fixed on the outer end face of the second frame body.
Furthermore, the first bevel gear shaft is rotatably connected with the hub through a bearing, and two ends of the first bevel gear shaft are provided with transmission shaft connecting flanges used for being connected with the transmission shaft; the second bevel gear shaft is rotationally connected with the hub through a bearing, and a hub cover is arranged outside the bearing; the first frame body is rotatably connected in the first shell through a bearing.
The utility model discloses following beneficial effect has:
after the supporting cylinder is installed in the joint bearing mounting hole, the supporting cylinder is in contact pre-tightening with the joint bearing, and the threaded surface of the supporting cylinder is extruded by the jacking screw to deform and closely fit with the inner wall of the joint bearing mounting hole, so that the anti-loosening effect is achieved. This anti loosening structure can reuse many times under the prerequisite of not destroying the support cylinder, need not to set up the baffle, brings conveniently for the maintenance of hub reduction gear, maintenance.
Drawings
FIG. 1 is a schematic structural diagram of an anti-loosening structure of a joint bearing of a conventional wheel reduction gear;
fig. 2 is a schematic structural diagram of an anti-loose structure of a knuckle bearing of a hub reduction gear provided in this embodiment;
FIG. 3 is a front view of the support cylinder of FIG. 2;
FIG. 4 is a bottom view of FIG. 3;
fig. 5 is an external view of a hub reduction gear according to the present embodiment;
FIG. 6 is a cross-sectional view of the wheel hub reduction gear of FIG. 5 taken along a vertical centerline;
FIG. 7 is a cross-sectional view of the wheel reduction unit of FIG. 5 taken along a horizontal centerline;
fig. 8 is an enlarged view of a braking portion in the wheel hub reduction gear shown in fig. 5.
Wherein, the names corresponding to the reference numbers are:
a-a support plate; b-a baffle;
1-a support cylinder; 1.1-arc groove; 1.2-thread flank; 1.3-smooth surface; 1.4-oil filler hole; 2, tightening the screw; 3-an oil filling plug;
100-anti-loose structure; 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-ball cage coupling; 120-knuckle bearing; 121-a pin shaft; 122-floating seal; 123-a first end cap; 124-a second end cap; 125-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 an anti-loose structure 100 of a joint bearing of a hub reduction gear, which comprises a supporting cylinder 1 and a jacking screw 2; the supporting cylinder 1 is arranged in a joint bearing mounting hole of the wheel-side speed reducer, the circumferential surface of the supporting cylinder 1 is provided with an arc groove 1.1, the circumferential surface between the arc groove 1.1 and the inner end surface is a threaded surface 1.2, and the circumferential surface between the arc groove and the outer end surface is a smooth surface 1.3; the outer end face of the self-supporting cylinder of the jacking screw 2 penetrates through the arc groove 1.1, and the end part is positioned in the thread face 1.2.
After the supporting cylinder 1 is installed in the joint bearing mounting hole, the supporting cylinder 1 is in contact pre-tightening with the joint bearing 120, and the threaded surface 1.2 of the supporting cylinder 1 is extruded by the jacking screw 2 to deform and be tightly attached to the inner wall of the joint bearing mounting hole, so that the anti-loosening effect is achieved. This anti loosening structure can reuse many times under the prerequisite that can not destroy support cylinder 1, need not to set up the baffle, brings conveniently for the maintenance of hub reduction gear, maintenance.
Further, an oil filling hole 1.4 is arranged between the inner end surface and the outer end surface of the support cylinder 1; an oil filling plug 3 is arranged in the oil filling hole and is used for adding lubricating oil to the joint bearing 120.
Furthermore, the number of the jacking screws 2 is two, and the jacking screws are symmetrically arranged on two sides of the symmetry axis of the arc groove 1.1.
Further, the support cylinder 1 and the tightening screw 2 are made of metal.
The embodiment also provides a hub reduction gear, which comprises a hub 101, a first bevel gear 102, a first bevel gear shaft 103, a second bevel gear 104, a second bevel gear shaft 105, a sun gear shaft 106, a sun gear 107, a planet gear 108, a planet gear 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 manner, wherein the second bevel gear shaft 105 is rotatably connected with the hub 101 and is connected with the sun gear shaft 106 through a ball cage coupling 119; 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 frame body 110.1 and a second frame body 110.2 which are fixedly connected with two ends of the planet wheel shaft 109 respectively, the first frame body 110.1 and the second frame body 110.2 are designed in an integral mode, the first frame body 110.1 is rotatably connected in a first outer shell 111, the first outer shell 111 is connected with two groups of connecting lug plates of the hub 101 through a joint bearing 120 and a pin shaft 121, the second frame body 110.2 is fixedly connected with a second outer shell 112, and the first outer shell 111 is connected with the second outer shell 112 through a floating seal 122; the anti-loosening structure 100 of the joint bearing of the hub reduction gear is arranged in the joint bearing mounting hole of the connecting lug plate.
The hub reduction gear also comprises an inner gear ring 113, a static friction plate 114, a dynamic friction plate 115, a piston 116, a reset screw 117 and a reset 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 disposed in a seal cavity defined by the first housing 111, the floating seal 122 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.
Further, a first end cap 123 is disposed between the first outer shell 111 and the ball cage coupler 119, and a second end cap 124 is fixed on an 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 125 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.
The traveling process of the wheel reduction gear is as follows: the motor drives the first bevel gear shaft 103 to rotate through the primary speed reducer and the transmission shaft, the first bevel gear 102 is used for reversing, the sun gear 107 is driven to rotate through the ball cage coupler 119, the planet gear 108 rotates around the sun gear 107 to drive the planet carrier to rotate, the first frame body 110.1 rotates in the first outer shell 111, the second frame body 110.2 drives the second outer shell 112 to rotate, the dynamic friction plate 115 rotates relative to the static friction plate 114, and the tire is installed on the second outer shell 112. The braking process 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.
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. An anti-loosening structure of a joint bearing of a hub reduction gear is characterized by comprising a supporting cylinder and a jacking screw;
the supporting cylinder is arranged in a joint bearing mounting hole of the wheel-side speed reducer, an arc groove is formed in the circumferential surface, the circumferential surface between the arc groove and the inner end surface is a threaded surface, and the circumferential surface between the arc groove and the outer end surface is a smooth surface;
the outer end face of the self-supporting cylinder of the jacking screw penetrates through the arc groove, and the end part of the jacking screw is located in the threaded surface.
2. The anti-loosening structure for a wheel hub reduction gear spherical plain bearing according to claim 1, wherein an oil filler hole is provided between the inner end surface and the outer end surface of the support cylinder, and an oil filler plug is provided in the oil filler hole.
3. The anti-loose structure of the hub reduction gear knuckle bearing according to claim 2, wherein the number of the tightening screws is two, and the tightening screws are symmetrically arranged on two sides of a symmetry axis of the arc groove.
4. The anti-loosening structure for a joint bearing of a wheel hub reduction gear according to claim 1, wherein the support cylinder and the tightening screw are both made of metal.
5. A hub reducer is characterized by comprising a hub, a first bevel gear shaft, a second bevel gear shaft, a sun gear, a planet gear 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 wheel hub, vertically meshed with the first bevel gear, fixedly provided with a second bevel gear shaft in a penetrating way, and rotatably connected with the wheel hub and connected with the sun wheel shaft through a 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 a planet wheel shaft respectively, the first frame body is rotatably connected in a first shell, the first shell is connected with two groups of connecting lug plates of a wheel hub through a joint bearing and a pin shaft, the second frame body is fixedly connected with a second shell, and the first shell is connected with the second shell through a floating seal;
the anti-loose structure of the hub reduction gear knuckle bearing of any one of claims 1-4 is arranged in the knuckle bearing mounting hole of the connecting lug plate.
6. The hub reduction gear according to claim 5, characterized by further comprising an inner gear ring, 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 a first end cap is disposed between the first housing and the ball cage coupling; and a second end cover is fixed on the outer end face of the second frame body.
8. The hub reduction gear according to claim 7, wherein the first bevel gear shaft is rotatably connected to the hub through a bearing, and a drive shaft connecting flange for connecting to a drive shaft is provided at both ends;
the second bevel gear shaft is rotationally connected with the hub through a bearing, and a hub cover is arranged outside the bearing;
the first frame body is rotatably connected in the first shell through a bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023110493.4U CN214404353U (en) | 2020-12-22 | 2020-12-22 | Anti-loosening structure of joint bearing of hub reduction gear and hub reduction gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023110493.4U CN214404353U (en) | 2020-12-22 | 2020-12-22 | Anti-loosening structure of joint bearing of hub reduction gear and hub reduction gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214404353U true CN214404353U (en) | 2021-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023110493.4U Active CN214404353U (en) | 2020-12-22 | 2020-12-22 | Anti-loosening structure of joint bearing of hub reduction gear and hub reduction gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214404353U (en) |
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- 2020-12-22 CN CN202023110493.4U patent/CN214404353U/en active Active
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