CN204186791U - A kind of three-rotational-freedom spherical hinge - Google Patents
A kind of three-rotational-freedom spherical hinge Download PDFInfo
- Publication number
- CN204186791U CN204186791U CN201420543132.4U CN201420543132U CN204186791U CN 204186791 U CN204186791 U CN 204186791U CN 201420543132 U CN201420543132 U CN 201420543132U CN 204186791 U CN204186791 U CN 204186791U
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- bearing
- rotating shaft
- bearing pin
- needle
- rotational
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Abstract
The utility model belongs to mechanical design field, particularly relate to a kind of three-rotational-freedom spherical hinge, it is characterized in that: described fixed block is connected to the two ends of rotating shaft I, described rotating shaft II is vertically installed in the outside of rotating shaft I, described bearing (ball) cover, adjustment packing ring, bearing I, bearing pin I sets gradually, described needle bearing is installed in bearing I, described bearing pin II is installed in needle bearing, described graphite circle is installed on rotating shaft I, between rotating shaft II, described end cap is installed in axillare hole, described needle thrust bearing I, flange, needle thrust bearing II, nut is installed on the upper end of rotating shaft II successively, described needle thrust bearing I, needle thrust bearing II symmetry is installed.The utility model structure is reliability and durability, and preparation process is comparatively simple, and space is large, add bearing capacity, eliminate the gap that common ball pivot easily produces, kinematic accuracy is high, long service life, can compensate the gap that long-time wearing and tearing produce simultaneously very easily.
Description
Technical field
The utility model belongs to mechanical design field, particularly relates to a kind of three-rotational-freedom spherical hinge.
Background technique
In industrial field, usually need to adopt chain connection between each motion or connecting rod, in numerous connection, the spherical hinge of three-rotational-freedom is widely used, in the connection especially between plane and rod member and between rod member.
At many modern industrial fields, often can use the actuator having multiple rod member and plane and form, in high-speed motion, the hinge fraction on motion rod member frequently rotates, therefore wearing and tearing are comparatively serious, connects precision and slowly declines, and needs to change time serious.Rod member stressed complexity at the volley, is often in the composite force such as tension and compression, torsion situation, gap can be caused under long-time condition to increase simultaneously, and kinematic accuracy declines.Therefore hinge fraction joint gap and carry the problem such as stressed and can be avoided becoming the major issue that industrial automation equipment needs to solve in the design.
Existing a kind of spherical hinge is divided into two-part, and wherein one end of a part of connecting rod is bulb, and one end of another part connecting rod is ball-and-socket, and ball-and-socket inside adopts high-abrasive material to make bearing shell, in addition grease lubrication.This spherical hinge bearing capacity and space limited, along with the increase of service time, axial clearance constantly becomes large, and kinematic accuracy reduces gradually.
Summary of the invention
For solving industry equipment high speed mechanism and load, the utility model to provide compared with the precision of spherical hinge in great institutions and life problems that a kind of structure is reliable, kinematic accuracy is high, the spherical hinge of long service life.
The technological scheme that the utility model adopts is: a kind of three-rotational-freedom spherical hinge, is characterized in that: comprise shell, bearing (ball) cover, end cap, needle thrust bearing I, flange, needle thrust bearing II, nut, described shell comprises fixed block, rotating shaft I, rotating shaft II, the inside of described shell is provided with adjustment packing ring, bearing, bearing pin I, needle bearing, bearing pin II, graphite circle, adjustment pad, described fixed block is connected to the two ends of rotating shaft I, and described rotating shaft II is vertically installed in the outside of rotating shaft I, and the lower end of described rotating shaft II offers opening, axillare hole, described axillare hole is positioned at the both sides of opening, described bearing (ball) cover, adjustment packing ring, bearing, bearing pin I sets gradually, described bearing (ball) cover is fixed on fixed block, described bearing is positioned at the inside of fixed block and it is fixed on bearing (ball) cover, described bearing pin I and rotating shaft I is connected, described needle bearing is installed in bearing, described bearing pin II is installed in needle bearing and its two ends and is sleeved in the axillare hole of rotating shaft II, and described graphite snare is located at the outside of bearing pin II and it is installed on rotating shaft I, between rotating shaft II, described graphite circle, adjustment pad, end cap sets gradually and adjusts pad, end cap is installed on one end of bearing pin II successively, and described end cap is installed in axillare hole, described needle thrust bearing I, flange, needle thrust bearing II, nut is installed on the upper end of rotating shaft II successively, described needle thrust bearing I, needle thrust bearing II symmetry is installed.
Also comprise seal ring I, described seal ring I is between described bearing pin I, rotating shaft I.
Also comprise seal ring II, described seal ring II is sheathed on the outside of described bearing pin II and is installed between described rotating shaft I, rotating shaft II both it.
Described opening takes the shape of the letter U.
Described rotating shaft I offers counterbore, outer side slot, and described counterbore is positioned at the both sides of described bearing, and described graphite circle embeds in described counterbore, and described outer side slot is positioned at the outside of described counterbore, and described seal ring II embeds in described outer side slot.
The two ends of described bearing pin II respectively arrange two tapped holes, and described adjustment pad, end cap are installed on one end of described bearing pin II successively by bolt.
Described bearing pin II respectively with the axes normal of rotating shaft I and rotating shaft II.
The beneficial effects of the utility model are:
The utility model structure is reliability and durability, and preparation process is comparatively simple, and space is large, add bearing capacity, eliminate the gap that common ball pivot easily produces, kinematic accuracy is high, long service life, can compensate the gap that long-time wearing and tearing produce simultaneously very easily.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is structural blast schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
In figure, 1-fixed block, 2-rotating shaft I, 3-rotating shaft II, 4-seal ring I, 5-bearing pin I, 6-bearing, 7-adjusts packing ring, 8-bearing (ball) cover, 9-needle bearing, 10-bearing pin II, 11-seal ring II, 12-graphite circle, 13-adjusts pad, 14-end cap, 15-needle thrust bearing I, 16-flange, 17-nut, 18-shell, 19-needle thrust bearing II, 20-opening, 21-axillare hole, 22-counterbore, 23-outer side slot, 24-tapped hole, 25-bolt.
Embodiment
As shown in Figure 1-2, a kind of spherical hinge of three-rotational-freedom, comprise shell 18, shell 18 comprises fixed block 1, rotating shaft I2, rotating shaft II3, wherein fixed block 1 is tapped hole with the mounting portion of external piece, also can adopt other mounting types simultaneously, a bearing hole is had for installing bearing 6 in the middle of rotating shaft I2, the side of rotating shaft II3 is U-shaped opening 20, U-shaped opening 20 both sides spooling plate hole 21 is connected with rotating shaft I2 for installing bearing pin II10, the opposite side of rotating shaft II3 has screw thread for construction bolt thus to connecting the flange 16 of external rod member, needle thrust bearing I15, needle thrust bearing II19 is fixed,
In the present embodiment, fixed block 1 comprises seal ring I4 with the attachment portion of rotating shaft I2, bearing pin I5, bearing 6, adjustment packing ring 7 and bearing (ball) cover 8, the axle journal of bearing pin I5 installs bearing 6, the inner ring of its shaft shoulder rigid bearing 6, then bearing 6 is loaded in the bearing hole of fixed block 1, the outer ring of bearing 6 is fixed by the bearing (ball) cover 8 be bolted on fixed block 1, the other end and the rotating shaft I2 of bearing pin I5 form interference fit, rotating shaft I2 and bearing pin I5 is connected, and can rotate by opposed fixed member 1, the mounting point of bearing pin I5 is wherein adjusted by adjustment packing ring 7, sealed by the seal ring I4 be sleeved between rotating shaft I2 and fixed block 1 simultaneously,
In the present embodiment, the attachment portion of rotating shaft I2 and rotating shaft II3 comprises needle bearing 9, bearing pin II10, seal ring II11, graphite circle 12, adjustment pad 13 and end cap 14, wherein, needle bearing 9 is installed in the bearing hole of rotating shaft I2, bearing pin II10 is penetrated in the brearing bore of needle bearing 9, the two ends of bearing pin II10 are respectively provided with two tapped holes 24, the lubrication of graphite circle 12 for rotating shaft I2 and rotating shaft II3 contacting point is embedded in the counterbore 22 of the bearing hole both sides of rotating shaft I2, in outer side slot 23, embedding sealing circle II11 prevents the oil leakage in needle bearing 9, contact with each other with the rotating shaft II3 be sleeved on bearing pin II10 outside graphite circle 12 and to rub and mutual vibrations for reducing, simultaneously because its antiwear characteristic adds overall working life, bearing pin II3 both sides use the position of two pieces of bolts 25 mounting and adjusting pad 13 and end cap 14 couples of bearing pin II10 to be successively fixed, the relative rotation of rotating shaft I2 and rotating shaft II3 can be realized after installation, and ensured by the relative movement precision of graphite circle 12 to the two,
In the present embodiment, the attachment portion of rotating shaft II3 and external rod member comprises needle thrust bearing I15, needle thrust bearing II19, flange 16 and nut 17, wherein, rotating shaft II3 installs needle thrust bearing I15 successively, flange 16, the needle thrust bearing II19 of reverse installation and by the nut 17 of above-mentioned portion compresses, flange 16 is in order to realize the connection of external rod member and rotating shaft II3, and realize relatively rotating of II3 around the shaft by the needle thrust bearing I15 between rotating shaft II3, the use of needle thrust bearing II15 can ensure certain loaded capability and installation precision.
Above an embodiment of the present utility model has been described in detail, but described content being only preferred embodiment of the present utility model, can not being considered to for limiting practical range of the present utility model.All equalizations done according to the utility model application range change and improve, and all should still belong within patent covering scope of the present utility model.
Claims (7)
1. a three-rotational-freedom spherical hinge, is characterized in that: comprise shell, bearing (ball) cover, end cap, needle thrust bearing I, flange, needle thrust bearing II, nut, described shell comprises fixed block, rotating shaft I, rotating shaft II, the inside of described shell is provided with adjustment packing ring, bearing, bearing pin I, needle bearing, bearing pin II, graphite circle, adjustment pad, described fixed block is connected to the two ends of rotating shaft I, and described rotating shaft II is vertically installed in the outside of rotating shaft I, and the lower end of described rotating shaft II offers opening, axillare hole, described axillare hole is positioned at the both sides of opening, described bearing (ball) cover, adjustment packing ring, bearing, bearing pin I sets gradually, described bearing (ball) cover is fixed on fixed block, described bearing is positioned at the inside of fixed block and it is fixed on bearing (ball) cover, described bearing pin I and rotating shaft I is connected, described needle bearing is installed in bearing, described bearing pin II is installed in needle bearing and its two ends and is sleeved in the axillare hole of rotating shaft II, and described graphite snare is located at the outside of bearing pin II and it is installed on rotating shaft I, between rotating shaft II, described graphite circle, adjustment pad, end cap sets gradually and adjusts pad, end cap is installed on one end of bearing pin II successively, and described end cap is installed in axillare hole, described needle thrust bearing I, flange, needle thrust bearing II, nut is installed on the upper end of rotating shaft II successively, described needle thrust bearing I, needle thrust bearing II symmetry is installed.
2. a kind of three-rotational-freedom spherical hinge according to claim 1, is characterized in that: also comprise seal ring I, and described seal ring I is between described bearing pin I, rotating shaft I.
3. a kind of three-rotational-freedom spherical hinge according to claim 1, is characterized in that: also comprise seal ring II, and described seal ring II is sheathed on the outside of described bearing pin II and is installed between described rotating shaft I, rotating shaft II both it.
4. a kind of three-rotational-freedom spherical hinge according to claim 1, is characterized in that: described opening takes the shape of the letter U.
5. a kind of three-rotational-freedom spherical hinge according to claim 3, it is characterized in that: described rotating shaft I offers counterbore, outer side slot, described counterbore is positioned at the both sides of described bearing, described graphite circle embeds in described counterbore, described outer side slot is positioned at the outside of described counterbore, and described seal ring II embeds in described outer side slot.
6. a kind of three-rotational-freedom spherical hinge according to claim 1, is characterized in that: the two ends of described bearing pin II respectively arrange two tapped holes, and described adjustment pad, end cap are installed on one end of described bearing pin II successively by bolt.
7. a kind of three-rotational-freedom spherical hinge according to claim 1, is characterized in that: described bearing pin II respectively with the axes normal of rotating shaft I and rotating shaft II.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420543132.4U CN204186791U (en) | 2014-09-19 | 2014-09-19 | A kind of three-rotational-freedom spherical hinge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420543132.4U CN204186791U (en) | 2014-09-19 | 2014-09-19 | A kind of three-rotational-freedom spherical hinge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204186791U true CN204186791U (en) | 2015-03-04 |
Family
ID=52618799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420543132.4U Expired - Fee Related CN204186791U (en) | 2014-09-19 | 2014-09-19 | A kind of three-rotational-freedom spherical hinge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204186791U (en) |
-
2014
- 2014-09-19 CN CN201420543132.4U patent/CN204186791U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150304 Termination date: 20150919 |
|
| EXPY | Termination of patent right or utility model |