CN203739967U - Valve body bearing of cycle ball power steering gear - Google Patents
Valve body bearing of cycle ball power steering gear Download PDFInfo
- Publication number
- CN203739967U CN203739967U CN201420077903.5U CN201420077903U CN203739967U CN 203739967 U CN203739967 U CN 203739967U CN 201420077903 U CN201420077903 U CN 201420077903U CN 203739967 U CN203739967 U CN 203739967U
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- Prior art keywords
- valve body
- bearing
- screw rod
- face
- upper cover
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- Expired - Lifetime
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- 238000012856 packing Methods 0.000 claims description 18
- 230000003134 recirculating effect Effects 0.000 claims description 11
- 238000010030 laminating Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000003754 machining Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Rolling Contact Bearings (AREA)
Abstract
The utility model relates to a vehicle steering device, in particular to a valve body bearing of a cycle ball power steering gear. The valve body bearing comprises a screw rod assembly, an upper cover and a valve body. The screw rod assembly comprises a screw rod which is provided with an annular boss, taper roller bearings and gaskets are arranged on the two sides of the annular boss, one side of each taper roller bearing is a vertical end face, the other side of each taper roller bearing is a tapered end face, one side of each gasket is a tapered face, and the other side of each gasket is a spherical face. The vertical end faces of the taper roller bearings are vertically attached to the end face of the annular boss, and the tapered end faces of the taper roller bearings are attached to the tapered faces of the gaskets. The spherical faces of the gaskets are attached to the upper cover and the valve body respectively. By means of the valve body bearing, strength of the bearing to bear screw rod axial force is effectively improved, and radial force of the screw rod also can be borne by the bearing; the centers of the spherical faces of the spherical taper gaskets can be automatically adjusted, installation errors of the bearing due to machining errors of two stress end faces of the screw rod are avoided, and transmission clearance is reduced.
Description
Technical field
The utility model relates to vehicle steering device, has related in particular to a kind of valve body bearing of recirculating ball power steering gear.
Background technology
Recirculating ball power steering gear is housed in autotruck steering swivel system conventionally, in the time driving, provide power steering, between this type of deflector valve body and screw rod by bearings, to bear on the one hand from the axial force of screw rod and footpath power to, to dwindle on the one hand the assemblage gap of bearing, to reduce drive gap.Conventional structure is ball-type at present, as shown in Figure 2, this structure can be born from screw axial and diametral load, by regulating upper cover screw-in depth, adjustable clearance is to suitable size, and this structure is used better for the recirculating ball power steering gear below deflector output torque 3000N.m.
But, on heavy ball-and-nut steering gear, its output torque can reach 8000N.m, the axial force that screw rod is subject to is very large, and suffered axial force is much larger than diametral load, continues to use the mounting means of accompanying drawing 2 structures, not only to increase the diameter of ball, if it is too tight that upper cover is twisted, easily clamping stagnation, hazard rate is higher; If upper cover is pine too, drive gap is excessive, affects the performance of deflector.Therefore this structure is unsuitable for heavy shape ball-and-nut steering gear, needs new construction to solve this clamping stagnation, the problem of high fault rate.
Summary of the invention
The defect that the utility model exists for prior art, provides a kind of failure rate is low, has reduced the valve body bearing of the recirculating ball power steering gear of drive gap.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
The valve body bearing of recirculating ball power steering gear, comprise screw rod assembly, upper cover, valve body, described screw rod assembly comprises screw rod, on described screw rod, be provided with annular boss, annular boss both sides are provided with tapered roller bearing, packing ring, and described tapered roller bearing one side is perpendicular end surface, and opposite side is tapered end face, one side of described packing ring is the conical surface, and opposite side is sphere; The perpendicular end surface of described tapered roller bearing is vertical with annular boss end face fits, and the tapered end face of tapered roller bearing and the conical surface of packing ring fit, and the sphere of packing ring fits with upper cover, valve body respectively.Because annular boss both ends of the surface have parallelism error, simultaneously screw rod also has the error of perpendicularity with tapered roller bearing, and therefore, packing ring another side is designed to spherical, with valve body and the sphere above covering fit.Because the ability of tapered roller bearing carrying axial force is greater than traditional ball bearing of main shaft, adopt the structure of ball ring simultaneously, compensate the idle travel causing because of Mismachining tolerance, because load-carrying capacity deficiency and upper cover that valve body bearing causes press the clamping stagnation problem that turns to too tightly causing to be resolved.
As preferably, the sphere of described tapered roller bearing fits with the sphere being arranged on upper cover and valve body respectively.While tightening upper cover, packing ring can be according to the parallelism error of screw rod boss both ends of the surface and the error of perpendicularity of screw rod, and automatic rotation among a small circle, to ensure the conical surface of packing ring and the laminating of the conical surface of tapered roller bearing better, reduces installation error and drive gap.
As preferably, between described upper cover and valve body, be threaded connection.
As preferably, described tapered roller bearing is made up of retainer and conical roller, and its conical surface extended line is by the center of vertical surface.
The utility model, owing to having adopted above technical scheme, has significant technique effect:
The utility model, compared to prior art, has effectively increased bearing and has born screw axial intensity of force, also can bear the diametral load from screw rod simultaneously; The sphere of sphere cone washer has automatic aligning, has avoided causing as error because of two stressed end face processing of screw rod the installation error of bearing, has reduced drive gap.The structure that adopts ball ring, has compensated the idle travel causing because of Mismachining tolerance, because load-carrying capacity deficiency and upper cover that valve body bearing causes press the clamping stagnation problem that turns to too tightly causing to be resolved.
Brief description of the drawings
Fig. 1 is the utility model valve body bearing arrangement schematic diagram.
Fig. 2 is the enlarged diagram of the utility model valve body bearing arrangement part-structure I.
Fig. 3 is the utility model valve body bearing arrangement part-structure
enlarged diagram.
Fig. 4 is the valve body bearing arrangement schematic diagram of existing structure.
Detailed description of the invention
The utility model is described in further detail with embodiment below in conjunction with accompanying drawing 1 to accompanying drawing 4:
embodiment 1
The valve body bearing of recirculating ball power steering gear, as shown in Figures 1 to 4, comprises screw rod assembly 1, upper cover 2, valve body 3, between upper cover 2 and valve body 3, is threaded connection.Described screw rod assembly 1 comprises screw rod 4, on described screw rod 4, be provided with annular boss 5, annular boss 5 both ends of the surface fine grindings, annular boss 5 both sides are provided with tapered roller bearing 6, packing ring 7, described tapered roller bearing 6 one sides are perpendicular end surface, opposite side is tapered end face, and a side of described packing ring 7 is the conical surface, and opposite side is sphere; The perpendicular end surface of described tapered roller bearing 6 and vertical laminating of annular boss 5 end faces, the conical surface of the tapered end face of tapered roller bearing 6 and packing ring 7 fits, and the sphere of packing ring 7 fits with the sphere being arranged on upper cover 2 and valve body 3 respectively.Tapered roller bearing 6 is made up of retainer 61 and conical roller 62.
Because annular boss 5 both ends of the surface have parallelism error, screw rod and tapered roller bearing 6 also have the error of perpendicularity simultaneously, and therefore, packing ring 7 another sides are designed to spherical, with the sphere laminating on valve body 3 and upper cover 2.Between upper cover 2 and valve body 3, be to be threaded, while tightening upper cover 2, packing ring 7 can be according to the parallelism error of screw rod boss both ends of the surface and the error of perpendicularity of screw rod, automatic rotation among a small circle, to ensure the conical surface of packing ring 7 and the laminating of the conical surface of tapered roller bearing 6 better, reduce installation error and drive gap.
To sum up, because the ability of tapered roller bearing carrying axial force is greater than ball bearing of main shaft, adopt the structure of ball ring simultaneously, compensated the idle travel causing because of Mismachining tolerance, because load-carrying capacity deficiency and upper cover that valve body bearing causes press the clamping stagnation problem that turns to too tightly causing to be resolved.
In a word, the foregoing is only preferred embodiment of the present utility model, all equalizations of doing according to the utility model claim change and modify, and all should belong to the covering scope of the utility model patent.
Claims (4)
1. the valve body bearing of recirculating ball power steering gear, comprise screw rod assembly (1), upper cover (2), valve body (3), it is characterized in that: described screw rod assembly (1) comprises screw rod (4), on described screw rod (4), be provided with annular boss (5), annular boss (5) both sides are provided with tapered roller bearing (6), packing ring (7), and described tapered roller bearing (6) one sides are perpendicular end surface, and opposite side is tapered end face, one side of described packing ring (7) is the conical surface, and opposite side is sphere; The perpendicular end surface of described tapered roller bearing (6) fits with vertical laminating of annular boss (5) end face, the conical surface of the tapered end face of tapered roller bearing (6) and packing ring (7), and the sphere of packing ring (7) fits with upper cover (2), valve body (3) respectively.
2. the valve body bearing of recirculating ball power steering gear according to claim 1, is characterized in that: the sphere of described tapered roller bearing (6) fits with the sphere being arranged on upper cover (2) and valve body (3) respectively.
3. the valve body bearing of recirculating ball power steering gear according to claim 1, is characterized in that: between described upper cover (2) and valve body (3), be threaded connection.
4. the valve body bearing of recirculating ball power steering gear according to claim 1, is characterized in that: described tapered roller bearing (6) is made up of retainer (61) and conical roller (62).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420077903.5U CN203739967U (en) | 2014-02-24 | 2014-02-24 | Valve body bearing of cycle ball power steering gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420077903.5U CN203739967U (en) | 2014-02-24 | 2014-02-24 | Valve body bearing of cycle ball power steering gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203739967U true CN203739967U (en) | 2014-07-30 |
Family
ID=51339805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420077903.5U Expired - Lifetime CN203739967U (en) | 2014-02-24 | 2014-02-24 | Valve body bearing of cycle ball power steering gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203739967U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832544A (en) * | 2015-05-18 | 2015-08-12 | 江苏联动轴承有限公司 | Special self-lubricating self-aligning worm assembly bearing for automobile EPS (electronic power steering) |
-
2014
- 2014-02-24 CN CN201420077903.5U patent/CN203739967U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832544A (en) * | 2015-05-18 | 2015-08-12 | 江苏联动轴承有限公司 | Special self-lubricating self-aligning worm assembly bearing for automobile EPS (electronic power steering) |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |