CN220281482U - Rack hold-down mechanism of mechanical steering gear - Google Patents
Rack hold-down mechanism of mechanical steering gear Download PDFInfo
- Publication number
- CN220281482U CN220281482U CN202321664446.5U CN202321664446U CN220281482U CN 220281482 U CN220281482 U CN 220281482U CN 202321664446 U CN202321664446 U CN 202321664446U CN 220281482 U CN220281482 U CN 220281482U
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- CN
- China
- Prior art keywords
- steering gear
- pressing
- rack
- mechanical steering
- pressing wheel
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- 210000004907 gland Anatomy 0.000 claims description 17
- 230000006835 compression Effects 0.000 claims 5
- 238000007906 compression Methods 0.000 claims 5
- 230000002159 abnormal effect Effects 0.000 abstract description 5
- 239000013589 supplement Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Gears, Cams (AREA)
Abstract
The utility model relates to a rack pressing mechanism of a mechanical steering gear, which comprises a pressing cover body, pressing wheels and a rotating shaft, wherein the rotating shaft which is transversely arranged is rotatably arranged at the lower end of the pressing cover body, the pressing wheels are arranged on the rotating shaft, and a circle of curved surface indent is arranged in the middle of the pressing wheels. The utility model has the advantages of reducing vibration and abnormal sound caused by friction and reducing no-load moment, thereby improving the quality of the steering gear, reducing the cost and improving the generation of abnormal sound.
Description
Technical Field
The utility model relates to the technical field of steering gear rack compaction, in particular to a mechanical steering gear rack compaction mechanism.
Background
The existing mechanical steering gear rack pressing mechanism is formed by fully contacting friction tiles with the surface of a rack, adopts a sliding friction structure, has a large contact surface between the friction tiles and the rack, and generates large resistance and vibration transmission in the running process of the rack due to overlarge static friction force, so that the steering force is increased, the power of a power-assisted motor is overlarge, the steering wheel alignment resistance of a vehicle is increased, and finally, higher motor cost and poor vehicle straightness are formed.
Disclosure of Invention
The technical problem to be solved by the utility model is to provide a rack pressing mechanism of a mechanical steering gear, which abandons a method of full contact of friction shoes, and uses a rolling pressing wheel matched with the diameter radian of a rack to replace the friction shoes, so that the rack can not cause excessive vibration, abnormal sound and running force due to large friction force of the pressing mechanism when the turbine and the rack are operated.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a mechanical steering ware rack hold-down mechanism, including gland body, pinch roller and pivot, gland body lower extreme rotation install and be the pivot of transverse arrangement, the pivot on install the pinch roller, the pinch roller middle part be provided with round curved surface indent.
The gland body is arranged in the technical scheme to facilitate the installation of the rotating shaft, the rotating shaft is arranged to install the pressing wheel, and the curved surface of the pressing wheel is concave to realize the pressing in of three directions, so that the rack can move stably.
As a supplement to the technical scheme, bearings attached to the rotating shaft are arranged in the two ends of the pressing wheel, and the pressing wheel can stably move through the bearings.
As a supplement to the technical scheme, the front and rear parts of the lower end of the gland body are provided with arc-shaped notches, and the exposed space of the pinch roller is ensured to be increased by arranging the arc-shaped notches.
As a supplement to the technical scheme, the middle outer ring of the gland body is provided with two O-shaped rings which are arranged side by side up and down, and the O-shaped rings are embedded and arranged on the gland body to prevent vibration generated during the running of the rack from being transmitted to the shell.
As a supplement to the technical scheme, the diameter of the left part of the pressing wheel is larger than that of the right part, so that the force for supporting the rack on the right part of the pressing wheel is larger than that of the left part, and the stability of the device can be further improved due to the large blocking force of the right part when the rack is ensured to jump.
As a supplement to the technical scheme, the two ends of the rotating shaft are sleeved with snap spring structures for pressing the bearing, and the bearing is ensured to run stably through the snap spring structures.
The beneficial effects are that: the utility model relates to a rack pressing mechanism of a mechanical steering gear, which has the following advantages:
(1) Friction resistance of the hold-down mechanism and no-load moment are reduced when the rack runs;
(2) The rack is completely fixed with other three directions when the turbine works, so that the rack is prevented from moving up and down;
(3) The gland body is additionally provided with two O-shaped rings, so that vibration generated during the running of the rack is prevented from being transmitted to the shell.
Drawings
FIG. 1 is a structural view of the present utility model;
fig. 2 is a view of the structure of the present utility model in use.
The diagram is: 1. the gland body, 2, the pinch roller, 3, curved surface indent, 4, arc breach, 5, bearing, 6, pivot, 7, worm, 8, rack, 9, O shape circle.
Detailed Description
The utility model will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present utility model and are not intended to limit the scope of the present utility model. Further, it is understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the present utility model, and such equivalents are intended to fall within the scope of the claims appended hereto.
The embodiment of the utility model relates to a rack pressing mechanism of a mechanical steering gear, which comprises a gland body 1, a pressing wheel 2 and a rotating shaft 6, wherein the rotating shaft 6 which is transversely arranged is rotatably arranged at the lower end of the gland body 1, the pressing wheel 2 is arranged on the rotating shaft 6, and a circle of curved surface indent 3 is arranged in the middle of the pressing wheel 2.
In the technical scheme, the gland body 1 is arranged to facilitate the installation of the rotating shaft 6, the rotating shaft 6 is arranged to install the pressing wheel 2, and the pressing in of three directions is realized through the concave 3 of the curved surface of the pressing wheel 2, so that the stable movement of the rack is realized.
As a supplement to the technical scheme, bearings 5 with inner rings attached to rotating shafts 6 are arranged in the two ends of the pressing wheel 2, and the pressing wheel 2 moves stably by installing the bearings 5.
As a supplement to the technical scheme, the front and rear parts of the lower end of the gland body 1 are provided with arc-shaped notches 4, and the exposed space of the pinch roller 2 is increased by arranging the arc-shaped notches 4.
As a supplement to the technical scheme, two O-rings 9 are arranged on the middle outer ring of the gland body 1 side by side up and down, and the O-rings 9 are embedded and installed on the gland body 1 to prevent vibration generated during the operation of the rack 8 from being transmitted to the shell.
As a supplement to the technical scheme, the diameter of the left part of the pressing wheel 2 is larger than that of the right part, so that the force for supporting the rack on the right part of the pressing wheel 2 is larger than that of the left part, and the stability of the device can be further improved due to the large blocking force of the right part when the rack is ensured to jump.
As a supplement to the technical scheme, the two ends of the rotating shaft 6 are sleeved with snap spring structures for pressing the bearing 5, and the bearing 5 is ensured to run stably through the snap spring structures.
Examples
As shown in fig. 2, when working, the worm 7 rotates to drive the rack 8, when the rack 8 works, the curved concave 3 of the pressing wheel 2 presses the rack 8 from the above 3 aspects, so that the rack 8 runs more smoothly, the O-ring 9 prevents vibration generated when the rack 8 runs from being transmitted to the shell, vibration and abnormal noise caused by friction are reduced, and no-load moment is reduced, thereby improving the quality of the steering gear, reducing the cost and improving the generation of abnormal noise.
The foregoing has outlined in detail a rack hold-down mechanism for a mechanical steering gear provided herein, and specific examples have been provided herein to illustrate the principles and embodiments of the present application, the above examples being provided only to assist in understanding the method and core concepts of the present application; meanwhile, as those skilled in the art will have modifications in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.
Claims (6)
1. A rack hold-down mechanism for a mechanical steering gear, comprising: the novel rotary pressing device comprises a pressing cover body (1), a pressing wheel (2) and a rotary shaft (6), wherein the rotary shaft (6) which is transversely arranged is rotationally arranged at the lower end of the pressing cover body (1), the pressing wheel (2) is arranged on the rotary shaft (6), and a circle of curved surface indent (3) is formed in the middle of the pressing wheel (2).
2. A mechanical steering gear rack compression mechanism according to claim 1 wherein: bearings (5) with inner rings attached to the rotating shaft (6) are arranged in the two ends of the pressing wheel (2).
3. A mechanical steering gear rack compression mechanism according to claim 1 wherein: the front and rear parts of the lower end of the gland body (1) are provided with arc-shaped notches (4).
4. A mechanical steering gear rack compression mechanism according to claim 1 wherein: two O-shaped rings (9) are arranged on the middle outer ring of the gland body (1) side by side up and down, and the O-shaped rings (9) are embedded and installed on the gland body (1).
5. A mechanical steering gear rack compression mechanism according to claim 1 wherein: the diameter of the left part of the pressing wheel (2) is larger than that of the right part.
6. A mechanical steering gear rack compression mechanism according to claim 2 wherein: and the two ends of the rotating shaft (6) are sleeved with snap spring structures for pressing the bearing (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321664446.5U CN220281482U (en) | 2023-06-28 | 2023-06-28 | Rack hold-down mechanism of mechanical steering gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321664446.5U CN220281482U (en) | 2023-06-28 | 2023-06-28 | Rack hold-down mechanism of mechanical steering gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220281482U true CN220281482U (en) | 2024-01-02 |
Family
ID=89337907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321664446.5U Active CN220281482U (en) | 2023-06-28 | 2023-06-28 | Rack hold-down mechanism of mechanical steering gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220281482U (en) |
-
2023
- 2023-06-28 CN CN202321664446.5U patent/CN220281482U/en active Active
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| GR01 | Patent grant |