CN115258021A - Vehicle braking system structure and front and rear changeover mechanism positioning calculation method thereof - Google Patents
Vehicle braking system structure and front and rear changeover mechanism positioning calculation method thereof Download PDFInfo
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- CN115258021A CN115258021A CN202210890709.8A CN202210890709A CN115258021A CN 115258021 A CN115258021 A CN 115258021A CN 202210890709 A CN202210890709 A CN 202210890709A CN 115258021 A CN115258021 A CN 115258021A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 32
- 238000004364 calculation method Methods 0.000 title abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 20
- 230000003068 static effect Effects 0.000 claims abstract description 8
- 238000006073 displacement reaction Methods 0.000 claims description 13
- 230000033001 locomotion Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 230000003139 buffering effect Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000012546 transfer Methods 0.000 abstract description 5
- 230000008859 change Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62L—BRAKES SPECIALLY ADAPTED FOR CYCLES
- B62L3/00—Brake-actuating mechanisms; Arrangements thereof
- B62L3/02—Brake-actuating mechanisms; Arrangements thereof for control by a hand lever
- B62L3/026—Brake-actuating mechanisms; Arrangements thereof for control by a hand lever actuation by a turning handle or handlebar
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62L—BRAKES SPECIALLY ADAPTED FOR CYCLES
- B62L3/00—Brake-actuating mechanisms; Arrangements thereof
- B62L3/04—Brake-actuating mechanisms; Arrangements thereof for control by a foot lever
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Transmission Of Braking Force In Braking Systems (AREA)
- Braking Elements And Transmission Devices (AREA)
Abstract
The invention relates to a vehicle braking system structure and a positioning calculation method of a front and rear changeover mechanism thereof. The brake operation assembly is arranged at the front end below the vehicle body in the operation direction and is used for performing the step operation of braking; the brake sensing assembly is connected with the brake operating assembly and can carry out transmission brake operation according to the operation of the brake operating assembly; the brake sensor assembly is arranged at the operating platform at the front end of the vehicle body in the operating direction and connected with the brake sensor assembly, and the brake sensor assembly can be driven to perform static brake operation through hand operation. And further provides a positioning calculation method of the front and rear transfer mechanisms, which can ensure that the braking clearance of the whole vehicle is always ensured under the running states of empty vehicle, light load and heavy load, so as to meet the braking performance requirement of mechanical brake.
Description
Technical Field
The invention relates to the field of mechanical vehicle braking, in particular to a vehicle braking system structure and a front-rear switching mechanism positioning calculation method thereof.
Background
The electric tricycle is a conventional vehicle type structure, has a universal application range, is a mature structure form, and is deeply loved by the majority of users due to the characteristics of simple operation, economic rationality, energy conservation, environmental protection and the like. However, in reality, the research and development design of the electro-tricycle is not over standard, so that certain problems exist in the aspect of a braking system which plays a crucial role in safety, and especially potential safety hazards exist in the aspect of more economical and practical mechanical braking. For a tricycle type, the structure and the position of a brake distribution shaft of a mechanical brake type have great influence on the braking performance of the whole tricycle, and particularly for a heavy-load electric tricycle type, the reasonable arrangement position of the brake distribution shaft is limited due to the influence of various factors such as the position of a battery, the direction of a motor and the like.
Traditional tricycle type mechanical brake structure, at the in-process of vehicle normal use, under the condition of no-load, light load and heavy load, leaf spring atress is different, according to the uncertainty of road conditions, waits multiple factor influence, and the position of rear axle can change, and then influences rear axle braking rocking arm position change, leads to taking place the braking potential safety hazard.
Disclosure of Invention
The purpose of the invention is as follows: the invention provides a vehicle braking system structure and further provides a front and rear changeover mechanism positioning calculation method based on the vehicle braking system structure, so as to solve the problems in the prior art.
The technical scheme is as follows: a vehicle braking system structure comprises a vehicle body for bearing an integral component, and further comprises a brake operation assembly, a brake sensing assembly and a hand brake assembly.
The braking operation assembly is arranged at the front end of the lower part of the vehicle body in the operation direction and is used for performing foot operation of braking;
the brake sensing assembly is connected with the brake operating assembly and can perform corresponding transmission brake operation according to the operation of the brake operating assembly;
the hand brake assembly is arranged at an operation platform at the front end of the vehicle body in the operation direction and is connected with the brake sensing assembly, and the hand brake assembly can be driven by hand operation to perform static brake operation.
In a further embodiment, the brake operating assembly includes two parts, a brake pedal assembly and a brake pedal lever. The brake pedal assembly is arranged at the front end of the lower part of the vehicle body in the working direction, and a pedal plate with a preset operation space is arranged at the front end of the brake pedal assembly in the working direction; the brake pedal combination has a preset bending degree. The brake pedal pull rod is connected with the rear end of the brake pedal combination in the working direction and can perform corresponding transmission along with the braking operation of the brake pedal combination.
In a further embodiment, the brake sensing assembly comprises five parts, namely a brake distribution shaft group, a rear brake front pull rod, a front-rear adapter mechanism, a rear brake rear pull rod and a rear brake rocker arm. The brake distribution shaft group is connected with the brake pedal pull rod and is used for mutual connection and transmission between the brake operation assembly and the brake sensing assembly as well as between the brake operation assembly and the hand brake assembly; the rear braking front pull rod is connected with the braking distribution shaft group and can perform corresponding braking operation along with the transmission of the braking distribution shaft group; the front and rear adapter mechanisms are connected with the rear brake front pull rod and are used for connecting and transmitting the front and rear parts in the working direction of the brake sensing assembly; the rear braking rear pull rod is connected with the front and rear switching mechanism and can perform braking operation along with the transmission of the rear braking front pull rod; the rear brake rocker arm is connected with the rear brake rear pull rod and can perform corresponding brake operation along with the braking of the rear brake rear pull rod.
In a further embodiment, the hand brake assembly comprises two parts, a hand brake handle and a hand brake cable. The hand brake handle is arranged at the operating platform at the front end of the vehicle body in the operating direction, is used for performing hand brake operation and has a preset operating space; one end of the hand brake cable is connected with the hand brake handle, the other end of the hand brake cable is connected with the front and rear changeover mechanism, and the hand brake cable can follow the braking of the hand brake handle to perform corresponding transmission operation so as to complete corresponding static brake operation.
In a further embodiment, the rear braking rocker arm is connected with the vehicle body through a main leaf of a steel plate spring and used for buffering and braking the rear end of the vehicle body in the working direction in the running process of the vehicle body, and the front rolling lug of the steel plate spring is of a fixed structure.
In a further embodiment, the brake distribution shaft and the rotation fulcrum of the front and rear changeover mechanism use a closed bearing structure as a rotation medium, so that friction force can be reduced, rotation effect can be increased, and manipulation experience can be improved.
A front and rear changeover mechanism positioning calculation method of a vehicle braking system structure comprises the following steps:
s1, setting the central point of a main leaf spring of a steel plate as the central point A of a main leaf spring, and setting the motion trail formed by the main leaf spring under the compression of gravity G as B;
s2, simulating to make a plurality of points through the motion trail B, and finding out a synchronous displacement point of the rear brake rocker arm through a same line segment parallel point finding method;
s3, taking each synchronous displacement point on the rear brake rocker arm as a circle center, and making a circle by taking the brake relative distance L as a radius;
and S4, setting the distance from the coincident point of circles with the plurality of displacement points as the centers of circles to the center of the rear brake rocker arm to be L1, and horizontally extending the distance LI from the center of the rear brake rocker arm to the front of the working direction of the vehicle body to be the fixed point position of the front-rear changeover mechanism.
Has the beneficial effects that: the invention relates to a vehicle braking system structure and a positioning calculation method of a front and rear changeover mechanism thereof. The brake operation assembly is arranged at the front end below the vehicle body in the operation direction and is used for performing the step operation of braking; the brake sensing assembly is connected with the brake operating assembly and can carry out transmission brake operation according to the operation of the brake operating assembly; the brake sensor assembly is arranged at the operating platform at the front end of the vehicle body in the operating direction and connected with the brake sensor assembly, and the brake sensor assembly can be driven to perform static brake operation through hand operation. The invention reasonably calculates the position and the height of the brake transfer point through the displacement of the rear axle and the change of the rotation angle of the brake swing arm, thereby ensuring that the brake clearance of the whole vehicle is always ensured under the running states of empty running, light load and heavy load, and meeting the requirement of the brake performance of the mechanical brake. And after the front and rear transfer points are determined, the brake distribution shafts are reasonably arranged, so that other related brake effects are met, and the brake safety of the whole vehicle is improved. The invention has the advantages of simple structure, high safety factor, comfortable driving experience, reasonable economic benefit and easy popularization.
Drawings
Fig. 1 is a side view of the present invention as a whole.
Fig. 2 is a calculation diagram of the operation trajectory of each calculation point according to the present invention.
The figures are numbered: the brake device comprises a vehicle body 1, a brake pedal combination 2, a pedal 3, a brake pedal pull rod 4, a brake distribution shaft group 5, a rear brake front pull rod 6, a front and rear changeover mechanism 7, a rear brake rear pull rod 8, a rear brake rocker arm 9, a hand brake handle 10, a hand brake cable 11, a steel plate spring main sheet 12, a running track 13 of each simulation point, a central point A of the plate spring main sheet, a running track B of the central point A of the plate spring main sheet and a running track C of the rear pull rod.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.
The applicant thinks that in the normal use process of the vehicle, the traditional mechanical brake structure of the tricycle model has different stress of the leaf spring under the conditions of no load, light load and heavy load, and the position of the rear axle can be changed under the influence of multiple factors such as uncertainty of road conditions and the like, so that the position change of the brake rocker arm of the rear axle is influenced, and the potential safety hazard of braking is caused.
Therefore, the applicant designs a vehicle braking system structure and a positioning calculation method of a front and rear transfer mechanism 7 thereof, and reasonably calculates the position and the height of a braking transfer point through the displacement of a rear axle and the change of the rotation angle of a braking swing arm, so as to ensure that the braking clearance of the whole vehicle is always ensured under the driving states of empty vehicle, light load and heavy load, and meet the requirement on the braking performance of a mechanical brake.
The invention relates to a vehicle braking system mechanism which mainly comprises a vehicle body 1 for bearing an integral component, and further comprises a brake operation component, a brake sensing component and a hand brake component. The brake operation assembly is arranged at the front end of the lower part of the vehicle body 1 in the operation direction and is used for performing step operation of braking; the brake sensing assembly is connected with the brake operating assembly and can perform corresponding transmission brake operation according to the operation of the brake operating assembly; the hand braking assembly is arranged at an operation platform at the front end of the car body 1 in the operation direction and connected with the braking sensing assembly, and the hand braking assembly can be driven by hand operation to perform static braking operation.
In a further preferred embodiment, the brake operating assembly comprises two parts, namely a brake pedal assembly 2 and a brake pedal pull rod 4. The brake pedal assembly 2 is arranged at the front end of the lower part of the vehicle body 1 in the working direction, and a pedal plate 3 with a preset operation space is arranged at the front end of the brake pedal assembly 2 in the working direction; the brake pedal assembly 2 has a predetermined degree of bending. The brake pedal pull rod 4 is connected with the rear end of the brake pedal assembly 2 in the working direction and can perform corresponding transmission along with the braking operation of the brake pedal assembly 2.
In a further preferred embodiment, the brake sensing assembly comprises five parts, namely a brake distribution shaft group 5, a rear brake front pull rod 6, a front-rear changeover mechanism 7, a rear brake rear pull rod 8 and a rear brake rocker arm 9. The brake distribution shaft group 5 is connected with the brake pedal pull rod 4 and is used for mutual connection and transmission between the brake operation assembly and the brake sensing assembly as well as between the brake operation assembly and the hand brake assembly; the rear braking front pull rod 6 is connected with the braking distribution shaft group 5 and can perform corresponding braking operation along with the transmission of the braking distribution shaft group 5; the front and rear adapter mechanisms 7 are connected with the rear brake front pull rod 6 and are used for connecting and transmitting front and rear parts in the working direction of the brake sensing assembly; the rear braking rear pull rod 8 is connected with the front and rear changeover mechanisms 7 and can perform braking operation along with the transmission of the rear braking front pull rod 6; the rear brake rocker arm 9 is connected with the rear brake rear pull rod 8 and can perform corresponding brake operation along with the braking of the rear brake rear pull rod 8.
In a further preferred embodiment, the hand brake assembly comprises two parts, a hand brake handle 10 and a hand brake cable 11. The hand brake handle 10 is arranged at an operation platform at the front end of the vehicle body 1 in the operation direction, is used for performing hand brake operation and has a preset operation space; one end of the hand brake cable 11 is connected with the hand brake handle 10, and the other end is connected with the front and rear changeover mechanism 7, so that corresponding transmission operation can be carried out along with the braking of the hand brake handle 10, and further corresponding static braking operation can be completed.
In a further preferred embodiment, the rear brake rocker arm 9 is connected to the vehicle body 1 through a leaf spring main leaf 12, and is used for buffering and braking the rear end of the vehicle body 1 in the working direction during the operation of the vehicle body 1, and the leaf spring front lug is a fixed structure.
In a further preferred embodiment, the brake distribution shaft and the rotation fulcrum of the front-rear changeover mechanism 7 use a closed bearing structure as a rotation medium, so that friction force can be reduced, rotation effect can be increased, and manipulation experience can be improved.
On the basis of the structure of the vehicle braking system, the invention provides a method for positioning and calculating a front and rear changeover mechanism 7 of the vehicle braking system structure, which comprises the following specific steps:
firstly, on the basis that the front eye of the leaf spring is a fixed structure, the rear axle adjusting pull rod can be basically determined to be out of action. Leaf spring owner piece 12 is fixed main part, leaf spring owner piece central point A is set for to the central point of leaf spring owner piece 12, under the die mould that receives gravity G, the motion track of leaf spring owner piece central point A is actually not parallel backshifting motion, confirms for the circular arc displacement according to the simulation theory analysis to can confirm back braking rocking arm 9 simultaneously and the same orbit displacement of leaf spring owner piece central point, thereby found the motion track B of leaf spring owner piece central point A.
Then, 3-5 points are simulated on the motion trail B, and simultaneously, a synchronous displacement point of the rear brake rocker arm 9 is found out through a collinear segment parallel point finding method, each point on the rear brake rocker arm 9 is used as a circle center, and a circle is made by taking the brake relative distance as a radius.
Then, the distance L from the coincident point of the circle with the plurality of displacement points to the center of the rear brake rocker arm 9 is constant, so that the distance L1 from the coincident point of the circle with the plurality of displacement points as the center of the circle to the center of the rear brake rocker arm 9 is set,
finally, the position horizontally extending from the center point of the rear brake rocker arm 9 to the front of the working direction of the vehicle body 1 by the distance LI is the fixed point position of the front and rear changeover mechanism 7.
Based on the above embodiments, the basic braking principle of the present invention is that the brake pedal assembly 2 drives the brake pedal rod 4 to drive the brake distribution shaft assembly 5, then the rear brake front rod 6 drives the determined front and rear changeover mechanism 7, and the front and rear changeover mechanism 7 is driven to move in the counterclockwise direction on the rear rod movement track C by the action of the brake pulling force D, so as to achieve the rear brake effect.
The hand brake handle 10 also drives the brake distribution shaft group 5 to realize the static braking effect like the brake pedal combination 2.
As noted above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A kind of car type braking system structure, including the car body used for bearing the weight of the whole part, its characteristic is to include also:
the brake operation assembly is arranged at the front end of the lower part of the vehicle body in the operation direction and is used for performing the step operation of braking;
the brake sensing assembly is connected with the brake operation assembly and can perform transmission brake operation according to the operation of the brake operation assembly;
the hand braking assembly is arranged at the operating platform at the front end of the vehicle body operation direction and connected with the braking sensing assembly, and the hand braking assembly can be driven by hand operation to perform static braking operation.
2. The vehicle type brake system structure according to claim 1, wherein the brake operating assembly includes:
the brake pedal assembly is arranged at the front end of the lower part of the vehicle body in the working direction, and a pedal plate with a preset operation space is arranged at the front end of the brake pedal assembly in the working direction;
and the brake pedal pull rod is connected with the rear end of the working direction of the brake pedal combination and can carry out corresponding transmission along with the braking operation of the brake pedal combination.
3. The structure of a vehicle braking system according to claim 2, wherein said brake sensing assembly comprises:
the brake distribution shaft group is connected with the brake pedal pull rod and is used for mutual engagement transmission among the brake operation assembly, the brake sensing assembly and the hand brake assembly;
the rear braking front pull rod is connected with the braking distribution shaft group and can perform corresponding braking along with the transmission of the braking distribution shaft group;
the front and rear adapter mechanisms are connected with the rear brake front pull rod and are used for connecting and transmitting the front and rear parts of the brake sensing assembly in the working direction;
the rear braking rear pull rod is connected with the front and rear adapter mechanisms and can brake along with the transmission of the rear braking front pull rod;
and the rear braking rocker arm is connected with the rear braking rear pull rod and can perform braking operation along with the braking of the rear braking rear pull rod.
4. The vehicle type brake system structure of claim 3, wherein the hand brake assembly comprises:
the hand brake handle is arranged at the operating platform at the front end of the vehicle body in the operating direction and is used for performing hand brake operation;
one end of the hand brake cable is connected with the hand brake handle, and the other end of the hand brake cable is connected with the front and rear switching mechanism, so that the hand brake cable can follow the brake of the hand brake handle to perform corresponding transmission operation.
5. A vehicle type brake system structure according to claim 3, characterized in that:
the rear braking rocker arm is connected with the vehicle body through a main leaf of a steel plate spring and is used for buffering and braking the rear end of the vehicle body in the working direction in the running process of the vehicle body.
6. A vehicle type brake system structure according to claim 3, characterized in that:
the brake distribution shaft and the rotation fulcrum of the front-rear changeover mechanism use a closed bearing structure as a rotation medium.
7. The method for calculating the positioning of the front and rear changeover mechanisms of the vehicle brake system structure according to claim 5, wherein:
s1, setting the central point of a main leaf spring of a steel plate as a central point A of the main leaf spring, and setting the motion trail of the main leaf spring formed under the profiling of gravity G as B;
s2, simulating to make a plurality of points through the motion trail B, and finding out a synchronous displacement point of the rear brake rocker arm through a same line segment parallel point finding method;
s3, taking each synchronous displacement point on the rear brake rocker arm as a circle center, and making a circle by taking the brake relative distance L as a radius;
and S4, setting the distance from the coincident point of circles with the plurality of displacement points as the centers of the circles to the center of the rear braking rocker arm to be L1, and horizontally extending the distance LI from the center point of the rear braking rocker arm to the front of the working direction of the vehicle body to be the fixed point position of the front and rear changeover mechanisms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210890709.8A CN115258021B (en) | 2022-07-27 | 2022-07-27 | Vehicle type braking system structure and front-rear switching mechanism positioning calculation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210890709.8A CN115258021B (en) | 2022-07-27 | 2022-07-27 | Vehicle type braking system structure and front-rear switching mechanism positioning calculation method thereof |
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| Publication Number | Publication Date |
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| CN115258021A true CN115258021A (en) | 2022-11-01 |
| CN115258021B CN115258021B (en) | 2023-12-12 |
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| CN111891287A (en) * | 2020-09-07 | 2020-11-06 | 霸州典美新能源动力科技有限公司 | Multi-connecting-rod balanced type brake system |
| CN112623095A (en) * | 2020-12-31 | 2021-04-09 | 霸州典美新能源动力科技有限公司 | Linkage parking system |
| DE102020004287B3 (en) * | 2020-07-16 | 2021-11-04 | Robert Virant | THREE-WHEELED ELECTRIC VEHICLE ACCORDING TO EC VEHICLE CLASS L2e-U |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN115258021B (en) | 2023-12-12 |
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