CN214251563U - Knuckle system power test loading arm - Google Patents
Knuckle system power test loading arm Download PDFInfo
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- CN214251563U CN214251563U CN202120433517.5U CN202120433517U CN214251563U CN 214251563 U CN214251563 U CN 214251563U CN 202120433517 U CN202120433517 U CN 202120433517U CN 214251563 U CN214251563 U CN 214251563U
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Abstract
The utility model provides a knuckle braking power test loading arm, is including the load plate that can simulate the wheel, installs former car bearing on the load plate, and the load plate can rotate around former car bearing, still is provided with the simulation calliper of simulation wheel braking calliper on the load plate, and the simulation calliper can rotate around the load plate, and the knuckle is installed on former car bearing and simulation calliper, still is provided with joint bearing between simulation calliper and the load plate. The stress condition of the steering knuckle at the grounding point can be accurately and effectively simulated through the built-in knuckle bearing near the caliper.
Description
Technical Field
The utility model belongs to the technical field of experimental loading technique and specifically relates to a knuckle system dynamic test loading arm.
Background
The automobile steering knuckle is one of the main parts in an automobile suspension system, is connected with each connecting rod, bearing, hub and brake assembly of an automobile, and has the functions of bearing the front and rear loads of the automobile, supporting and driving the hub to rotate, and realizing flexible steering and normal running of the automobile. The reliability of the steering knuckle directly influences the normal running of an automobile and the life safety of vehicle-mounted personnel, and particularly the steering knuckle is subjected to variable impact and fatigue loads in the running state of the automobile, so that the steering knuckle has higher requirements on the strength, fatigue, rigidity and mechanical properties of the steering knuckle. Therefore, in the process of a product research and development cycle, one of the most important works is to verify whether the fatigue life and the strength of the product can meet the requirements of various working conditions. With the acceleration of the development speed of various vehicle types, the research and development period of the vehicle types is gradually shortened, the research and development strength of the steering knuckle bench test is continuously enhanced, the mechanical performance of the steering knuckle is improved to meet the requirements of various road conditions, and the development of the automobile industry is urgently required. Verification schemes mainly including a steering knuckle dynamic test, a lateral force test, a vertical force test and a steering force test and matching with other single-hole small tests are gradually formed in various host factories. How to correctly and effectively form a braking force test loading arm has great influence on a steering knuckle power test, and whether the structural form of the braking force loading arm is correct or not has obvious influence on fatigue and strength of a caliper through strain gauge attachment comparison.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a knuckle system power test loading arm can be in knuckle system power bench test, the atress condition that comes from tire earthing point department that accurate, effectual simulation knuckle received. In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
the utility model provides a knuckle braking power test loading arm, is including the load plate that can simulate the wheel, installs former car bearing on the load plate, and the load plate can rotate around former car bearing, still is provided with the simulation calliper of simulation wheel braking calliper on the load plate, and the simulation calliper can rotate around the load plate, and the knuckle is installed on former car bearing and simulation calliper, still is provided with joint bearing between simulation calliper and the load plate.
In some embodiments, the bottom of the load plate is provided with a horizontal force loading device.
In some embodiments, the top of the load plate is provided with a vertical force loading device.
In some embodiments, the simulated calipers comprise two opposite loading plates arranged on two sides of the loading plate, through holes are formed in the loading plate corresponding to the central parts of the simulated calipers, knuckle bearings are installed in the through holes, and the two simulated calipers are fixedly connected through pin shafts penetrating through the knuckle bearings.
In some embodiments, a spacer is also provided between the two simulated calipers.
Compared with the prior art, knuckle system power test loading arm have following advantage:
the knuckle power loading arm adds a built-in knuckle bearing to the caliper. In the braking state of the real vehicle, the force of the grounding point of the tire on the steering knuckle is transmitted through the center of the friction area of the brake pad and the brake disc, and the spherical center of the knuckle bearing at the caliper of the braking force loading arm is consistent with the center of the friction area of the real vehicle (the thickness of the brake disc needs to be considered). And the contact between the steering knuckle and the brake disc through the brake pad of the real vehicle is correctly simulated, and the stress condition of the ground point of the tire is obtained. Meanwhile, the vertical load can be required to be increased according to the requirements of customers.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation.
Fig. 1 is the utility model relates to a knuckle real vehicle mounting structure schematic diagram.
Fig. 2 is the utility model relates to a knuckle system power test loading arm sketch map.
Fig. 3 is a schematic view of each part of the knuckle dynamic test loading arm of the present invention.
Fig. 4 is the rear schematic view of the knuckle dynamic test loading arm loading knuckle of the present invention.
Fig. 5 is the utility model relates to a knuckle system power test loading arm test schematic diagram.
Fig. 6 is the utility model relates to a knuckle system power test loading arm test schematic diagram.
Description of reference numerals:
1-pin shaft, 2-simulation caliper, 3-cushion block, 4-fastening bolt, 5-loading plate, 6-knuckle bearing, 8-gasket, 9-fastening bolt, 10-original vehicle bearing, 11-knuckle bearing with external threads, 12-bearing bolt, 13-caliper bolt, 14-knuckle, 15-brake disc, 16-brake caliper and 17-brake pad.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The technical solution of the present invention will be described more clearly and completely with reference to the accompanying drawings, in which embodiments of the invention are shown and described. 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 knuckle-restraining power test loading arm according to an embodiment of the present invention will be described with reference to fig. 1 to 6 in conjunction with the embodiment.
Technical terms or nouns used in the present embodiment need to be interpreted.
Joint bearing: the joint bearing is a spherical sliding bearing, the sliding contact surface of the joint bearing is an inner spherical surface and an outer spherical surface, the joint bearing can rotate and swing at any angle during movement, and the joint bearing is manufactured by adopting a plurality of special processing methods such as surface phosphorization, deep-fried mouth, embedding, spraying and the like. The joint bearing has the characteristics of large load capacity, impact resistance, corrosion resistance, wear resistance, self-aligning, good lubrication and the like.
A knuckle dynamic test loading arm comprises a loading plate 5 capable of simulating wheels, wherein an original vehicle bearing 10 is mounted on the loading plate 5, the loading plate 5 can rotate around the original vehicle bearing 10, a simulation caliper 2 simulating a wheel brake caliper 16 is further arranged on the loading plate 5, the simulation caliper 2 can rotate around the loading plate 5, a knuckle 12 is mounted on the original vehicle bearing 10 and the simulation caliper 2, and a knuckle bearing 6 is further arranged between the simulation caliper 2 and the loading plate 5. And a horizontal force loading device is arranged at the bottom of the loading plate 5. And a vertical force loading device is arranged at the top of the loading plate 5. The simulation calipers 2 comprise two opposite loading plates 5 arranged on two sides of the loading plates, through holes are formed in the loading plates 5 corresponding to the center parts of the simulation calipers 2, the joint bearings 6 are installed in the through holes, and the two simulation calipers 2 are fixedly connected through pin shafts 1 penetrating through the joint bearings 6. And a cushion block 3 is also arranged between the two simulation calipers 2. The tire grounding point load required by a customer is accurately transmitted to the steering knuckle 14 by simulating the built-in knuckle bearing between the caliper 2 and the loading plate 5. The utility model discloses can exert load in vertical loading point and tire earth connection point department simultaneously, vertical loading point and tire earth connection are relevant position joint bearing 6 centers, and vertical loading point and tire earth connection need be according to the position adjustment that the customer provided.
In some embodiments, when the knuckle rack is constructed, as shown in fig. 3, the load plate 5 and the original vehicle bearing 10 are connected together and connected by a fastener. The joint bearing 6 is placed into the loading plate 5, and the joint bearing 6 and the loading plate 5 are in copper hammer driving type interference fit. The dummy caliper 2 is placed on both sides of the load plate 5. The simulation caliper 2 and the joint bearing 6 are connected in series by the pin shaft 1, and the pin shaft 1, the simulation caliper 2 and the joint bearing 6 are in copper hammer driving type interference fit. The upper part and the lower part between the two simulated calipers 2 are respectively provided with a cushion block 3, and the simulated calipers 2 and the cushion blocks 3 are connected in series by fastening bolts 4. Fastening the fastening pieces at the positions, and when the pin shaft 1 is fastened, a fastening bolt 9 and a gasket 8 need to be installed.
As shown in fig. 4 and 5, the knuckle 14 and the original vehicle bearing 10 are connected by the bearing bolt 12 after the braking force test loading arm is mounted. The knuckle 14 caliper hole is connected to the simulated caliper 2 with a caliper bolt 13. As shown in fig. 5 and 6, the knuckle 14 is connected to the remaining test jig before the brake force test loading arm is installed. After the installation, the rest part of the adjusting rack meets the requirements. The vertical load Fz and the grounding point load Fx can then be given as required for fatigue or static load testing. The vertical load Fz and the grounding point load Fx are loaded at a vertical loading point and a grounding point loading point respectively, and the vertical loading point and the grounding point loading point are the spherical centers of the externally threaded knuckle bearings 11 at corresponding positions respectively. If no vertical load Fz is required, parts of the corresponding vertical part of the loading arm can be removed. As shown in fig. 6, the loading plate 5 is driven by the grounding point load Fx to rotate around the central axis of the original vehicle bearing 10, and due to structural limitations, the loading plate 5 does not move relatively to the caliper ear of the knuckle 14 or slightly due to the clearance between the inner and outer rings of the knuckle bearing 6.
In some embodiments, the reason why this brake force loading arm requires the addition of the knuckle bearing 6 is further explained. FIG. 1 is a schematic diagram of a partial block diagram of a knuckle real vehicle brake system. The brake disc 15 and the wheel are connected to an original vehicle bearing (10) through a wheel fastening bolt, and the brake disc 15 rotates along with the wheel during the running process of the automobile. When a braking situation occurs, the brake fluid pushes the brake pads 17 to clamp the brake disc 15. The friction generated by the brake pads 17 and the brake disc 15 gradually reduces the speed of the vehicle, and during braking, the caliper ears of the steering knuckle 14 are subjected to the force F and the moment M from the brake caliper 16. The brake pads 17 and brake caliper 16 are part of the brake and can be considered as a whole. The brake caliper 16 is connected to the knuckle (14) by a caliper bolt 13. The central position of the knuckle bearing 6 is determined by taking the middle interface of the thickness of the brake disc 15, and the central points of the friction areas of the brake pads 17 and the brake disc 15. The frictional force from the tire and the ground that the knuckle is finally subjected to during braking is transmitted through the combined action of the brake pad 17 and the brake disc 15, so when a braking force test is performed on the knuckle, the state of the brake pad 17 and the brake disc 15 when in contact needs to be simulated correctly. During the test, a joint bearing is added at the center of the simulated caliper 2, and the stress and the structure of the brake pad 17 and the brake disc 15 during the braking are simulated correctly.
If there is no bearing structure near the caliper, the dummy caliper 2 and the load plate 5 are directly connected with fastening bolts. The simulated caliper 2 and knuckle 14 are connected by a caliper bolt 13. When the brake pads 17 and the brake disc 15 are in contact in a real vehicle state, force F and bending moment M are generated on the caliper lugs of the steering knuckle 14. The structure can not simulate the bending moment M when the caliper lug of the steering knuckle 14 is contacted with the brake pad 17 and the brake disc 15 during actual braking.
Compared with the prior art, the utility model discloses a knuckle system power test loading arm has following advantage:
the knuckle power loading arm adds a built-in knuckle bearing to the caliper. In the braking state of the real vehicle, the force of the grounding point of the tire on the steering knuckle is transmitted through the center of the friction area of the brake pad and the brake disc, and the spherical center of the knuckle bearing at the caliper of the braking force loading arm is consistent with the center of the friction area of the real vehicle (the thickness of the brake disc needs to be considered). And the contact between the steering knuckle and the brake disc through the brake pad of the real vehicle is correctly simulated, and the stress condition of the ground point of the tire is obtained. Meanwhile, the vertical load can be required to be increased according to the requirements of customers.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The knuckle braking power test loading arm is characterized by comprising a loading plate (5) capable of simulating wheels, wherein an original vehicle bearing (10) is mounted on the loading plate (5), the loading plate (5) can rotate around the original vehicle bearing (10), a simulation caliper (2) for simulating wheel braking calipers (16) is further arranged on the loading plate (5), the simulation caliper (2) can rotate around the loading plate (5), a knuckle (12) is mounted on the original vehicle bearing (10) and the simulation caliper (2), and a knuckle bearing (6) is further arranged between the simulation caliper (2) and the loading plate (5).
2. The knuckle brake force test loading arm according to claim 1, wherein a horizontal force loading device is provided at the bottom of the loading plate (5).
3. The knuckle brake force test loading arm according to claim 2, wherein a vertical force loading device is provided on the top of the loading plate (5).
4. The knuckle dynamic test loading arm according to claim 3, wherein the simulated caliper (2) comprises two opposite loading plates (5), a through hole is formed in the loading plate (5) corresponding to the central part of the simulated caliper (2), the knuckle bearing (6) is mounted in the through hole, and the two simulated calipers (2) are fixedly connected through a pin shaft (1) penetrating through the knuckle bearing (6).
5. The knuckle dynamic test loading arm according to claim 4, wherein a pad (3) is further arranged between the two simulated calipers (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120433517.5U CN214251563U (en) | 2021-03-01 | 2021-03-01 | Knuckle system power test loading arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120433517.5U CN214251563U (en) | 2021-03-01 | 2021-03-01 | Knuckle system power test loading arm |
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| Publication Number | Publication Date |
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| CN214251563U true CN214251563U (en) | 2021-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120433517.5U Active CN214251563U (en) | 2021-03-01 | 2021-03-01 | Knuckle system power test loading arm |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114486147A (en) * | 2022-02-16 | 2022-05-13 | 上海工程技术大学 | Clamping system for portable automobile steering knuckle universal impact test |
| CN117405330A (en) * | 2023-10-25 | 2024-01-16 | 湖北新火炬科技有限公司 | Bearing operability verification test bed and bearing operability verification test method |
-
2021
- 2021-03-01 CN CN202120433517.5U patent/CN214251563U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114486147A (en) * | 2022-02-16 | 2022-05-13 | 上海工程技术大学 | Clamping system for portable automobile steering knuckle universal impact test |
| CN117405330A (en) * | 2023-10-25 | 2024-01-16 | 湖北新火炬科技有限公司 | Bearing operability verification test bed and bearing operability verification test method |
| CN117405330B (en) * | 2023-10-25 | 2024-06-04 | 湖北新火炬科技有限公司 | Bearing operability verification test bed and bearing operability verification test method |
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