CN111605520A - Gear-driven reverse wheel emergency braking device - Google Patents
Gear-driven reverse wheel emergency braking device Download PDFInfo
- Publication number
- CN111605520A CN111605520A CN201910141883.0A CN201910141883A CN111605520A CN 111605520 A CN111605520 A CN 111605520A CN 201910141883 A CN201910141883 A CN 201910141883A CN 111605520 A CN111605520 A CN 111605520A
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- China
- Prior art keywords
- gear
- braking
- brake
- wheel
- brake assembly
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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
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
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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
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
- B60T1/062—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels acting on transmission parts
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention relates to a gear-driven reverse wheel emergency braking device, which comprises a braking component rotationally connected with an axle (1), wherein the braking component comprises a braking rotating shaft (4) connected with the axle (1) through a gear set and braking wheels (5) rotationally arranged at two ends of the braking rotating shaft (4), the rotating direction of the axle (1) is opposite to that of the braking rotating shaft (4), and the braking component meets the following requirements: under normal conditions, the brake assembly is suspended in the vehicle chassis and is not in contact with the ground; during emergency braking, the brake assembly is pressed, and the brake wheel (5) is contacted with the ground. Compared with the prior art, the invention utilizes the reverse direction of the interaction of the gears, adds the wheel structure for providing the reverse friction force, does not influence the original common and emergency braking functions of the vehicle, starts the braking of the wheels in a switch mode, enhances the braking performance of the vehicle and has simpler operation.
Description
Technical Field
The invention relates to a vehicle braking device, in particular to an emergency braking device for a reverse wheel driven by a gear.
Background
The existing automobile brake system mainly comprises an air compressor, an air reservoir, a brake valve air pressure regulator, a brake air chamber and a wheel brake, and the emergency braking has limitation due to daily use. The emergency braking has great damage to the automobile and the tire, and often causes the automobile to swing, turn around, lose the direction control or sideslip due to inconsistent braking of the left wheel and the right wheel or difference of the adhesion coefficients, especially causes accidents because the wet and slippery road surface damages the machine.
Vehicle operating method with brake anti-lock braking system (ABS): quickly lifting the accelerator pedal, immediately and violently stepping on the brake pedal (keeping the forceful stepping), and simultaneously stepping on the clutch pedal to quickly stop the automobile. Abs-free vehicle operation method: rapidly lifting an accelerator pedal, forcibly stepping a brake pedal, using a spot brake to prevent wheels from locking, and selectively stepping a clutch to prevent the vehicle from flameout.
The prior art has the following defects and shortcomings: firstly, the braking effect of the common braking system in emergency is not ideal, and the control of the braking force is difficult. Secondly, emergency braking occurs at critical times, the vehicle owner reaction is limited and it may be difficult to make a correct braking operation.
Chinese patent CN201721332371.5 discloses a vehicle emergency braking device, belonging to the field of vehicle braking devices. The invention discloses a vehicle emergency braking device, which comprises a wheel braking mechanism and a vehicle body braking stabilizing mechanism, wherein the wheel braking mechanism comprises a brake plate, an outer side brake buckle, an inner side brake sheet and a support wing, and the outer side brake buckle is nested at one side of the brake plate and is positioned at the outer sides of a corresponding front wheel and a corresponding rear wheel; the inner side brake sheet is arranged on the other side of the brake plate and is positioned on the inner sides of the corresponding front wheel and the rear wheel; the vehicle body braking stabilizing mechanism comprises an upwind groove and a wind pressing groove. However, the vehicle body of the patent is complex, the parts are complicated, the cost is high, the maintenance is difficult, the provided braking force is limited, and the acting force of the stabilizing mechanism is limited by the wind power of the chassis.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a gear-driven reverse wheel emergency braking device.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a gear drives reverse wheel emergency braking device, includes the brake assembly who is connected with the axletree rotation, brake assembly includes the braking pivot that is connected with the axletree through the gear train to and rotate and install the braking wheel at braking pivot both ends, the direction of rotation of axletree is opposite with the direction of rotation of braking pivot, brake assembly satisfies:
under normal conditions, the brake assembly is suspended in the vehicle chassis and is not in contact with the ground;
during emergency braking, the brake assembly is pressed, and the brake wheel is contacted with the ground.
Further, the gear set comprises a brake gear arranged on the brake rotating shaft and a driving gear arranged on the axle, and the brake gear is connected with the driving gear.
Further, the brake gear and the driving gear are engaged with each other.
Furthermore, the brake gear and the driving gear are connected through a transmission assembly, the transmission assembly comprises an intermediate gear connected with the driving gear and a transmission chain connected with the driving gear and the intermediate gear, and the intermediate gear is meshed with the brake gear.
Furthermore, the brake gear is a one-way ratchet.
Further, the rotation direction of the axle is opposite to the rotation direction of the braking rotating shaft.
Furthermore, a hydraulic unit for pressing the brake assembly down is mounted on the upper portion of the brake assembly, and a switch of the hydraulic unit is arranged in the cab.
Furthermore, the transmission assembly is made of light and firm materials, and the braking wheel is made of materials with large friction coefficients.
The transmission assembly comprises a driving gear, an intermediate gear and a brake gear, the driving gear and the intermediate gear are connected through a transmission chain, the rotation direction and the rotation speed are the same, the intermediate gear and the brake gear are meshed through tooth parts and are connected, the rotation direction is opposite, the brake gear is a one-way ratchet wheel, an axle drives the one-way ratchet wheel to move when the vehicle moves forwards, the one-way ratchet wheel slides without applying force when the vehicle decelerates until the speed of the wheel is higher than that of the brake wheel, and the one-way ratchet wheel is continuously.
The one-way driving technology of the bicycle gear is adopted between the braking rotating shaft and the braking gear, namely, the braking wheel is driven when the wheel forwards moves, the rotating speed of the wheel is lower than that of the braking wheel when the wheel is braked, and the rotation of the braking wheel is not influenced, so that the braking loss in the normal running process can be reduced.
When dangerous conditions occur, a driver starts a starting button in a cab, a starting signal is sent to a hydraulic unit, a braking wheel is pressed to be in contact with the ground and certain extra pressure is applied, the friction force between the braking wheel and the ground is enhanced, the braking wheel rotates in the reverse direction under the driving of a front wheel at the moment, the braking force is applied to the vehicle, the braking wheel can generate the braking force as long as the front wheel rotates, and even if the wheel is locked, the static friction force of one braking wheel can be increased for the vehicle.
The invention is based on gear drive characteristics and vehicle ground brake friction. The preliminary analysis has the following advantages: the structure is clear and simple, and the manufacturing rationality is high; the device does not occupy excessive output power and use space in daily running; when the emergency starting occurs, the braking friction force is greatly increased, and the braking performance is improved.
Compared with the prior art, the invention utilizes the reverse direction of the interaction of the gears, adds the wheel structure for providing the reverse friction force, does not influence the original common and emergency braking functions of the vehicle, starts the braking of the wheels in a switch mode, enhances the braking performance of the vehicle and has simpler operation.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the transmission assembly of the present invention.
The reference numbers in the figures indicate:
1. axle, 2, drive gear, 3, transmission assembly, 4, braking pivot, 5, braking wheel, 6, hydraulic unit, 7, drive chain, 8, intermediate gear, 9, braking gear.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Examples
A gear-driven reverse wheel emergency braking device is shown in figure 1 and comprises a braking component which is rotatably connected with an axle 1, wherein the braking component comprises a braking rotating shaft 4 connected with the axle 1 through a gear set and braking wheels 5 rotatably arranged at two ends of the braking rotating shaft 4, the rotating direction of the axle 1 is opposite to that of the braking rotating shaft 4, and the braking component meets the following requirements:
under normal conditions, the brake assembly is suspended in the vehicle chassis and is not in contact with the ground;
during emergency braking, the brake assembly is pressed, and the brake wheel (5) is contacted with the ground.
The gear set comprises a brake gear 9 arranged on the brake rotating shaft 4 and a driving gear 2 arranged on the axle 1, wherein the brake gear 9 is connected with the driving gear 2. The brake gear 9 and the driving gear 2 are connected through a transmission assembly 3, the transmission assembly comprises an intermediate gear 8 connected with the driving gear 2 and a transmission chain 7 connecting the driving gear 2 and the intermediate gear 8, and the intermediate gear 8 is meshed with the brake gear 9. The brake gear 9 is a one-way ratchet. The rotation direction of the axle 1 is opposite to the rotation direction of the brake shaft 4. The upper part of the brake assembly is provided with a hydraulic unit 6 for pressing the brake assembly, and a switch of the hydraulic unit 6 is arranged in the cab. The transmission component 3 is made of light and firm materials, and the brake wheel 5 is made of materials with large friction coefficient.
As shown in fig. 2, the driving gear 2 and the intermediate gear 8 are connected through the transmission chain 7, the rotation direction and the rotation speed are the same, the intermediate gear 8 and the braking gear 9 are meshed through tooth parts, the rotation direction is opposite, the braking gear 9 is a one-way ratchet wheel, the axle 1 drives the one-way ratchet wheel to move when the vehicle moves forwards, the one-way ratchet wheel slides without applying force when the vehicle decelerates until the speed of the wheel is higher than that of the braking wheel 5, and the one-way ratchet wheel continues to be driven to rotate.
The one-way driving technology of the bicycle gear is adopted between the braking rotating shaft 4 and the braking gear 9, namely, the braking wheel 5 is driven when the wheel forwards moves, the rotating speed of the wheel is lower than that of the braking wheel 5 when the wheel is braked, and the rotation of the braking wheel 5 is not influenced, so that the braking loss in the normal running process can be reduced.
When a dangerous condition occurs, a driver starts a starting button in a cab, a starting signal is sent to the hydraulic unit 6, the brake wheel 5 is pressed to be in contact with the ground and certain extra pressure is applied, the friction force between the brake wheel 5 and the ground is enhanced, the brake wheel 5 rotates in the reverse direction under the driving of the front wheel at the moment, the braking force is applied to the vehicle, the brake wheel 5 can generate the braking force as long as the front wheel rotates, and even if the wheel is locked, the vehicle can also increase the static friction force of the brake wheel 5.
The gear and the transmission device should be made of light and firm materials, the brake wheel 5 should be made of materials with large friction coefficient, and the sizes of the brake wheel 5 and the like can be modified according to subsequent actual requirements. Further, applications in other drive vehicles are also contemplated.
The existing emergency braking technologies are classified into an installed anti-lock brake system (ABS) and a no-brake ABS. Without the disadvantages of ABS systems: the braking performance is poor, and the safety factor is low. The defects of ABS system installation are as follows: certain operation steps are needed, especially the beginners are difficult to control, and the braking performance is also deficient.
The invention utilizes the reverse direction of the interaction of the gears, adds the wheel structure for providing the reverse friction force, does not influence the original common and emergency braking functions of the vehicle, starts the braking wheel 5 in a switch mode, enhances the braking performance of the vehicle and has simpler operation.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (6)
1. The utility model provides a gear drive reverse wheel emergency braking device, its characterized in that includes and rotates the brake assembly who is connected with axletree (1), brake assembly includes braking pivot (4) that are connected with axletree (1) through the gear train to and rotate and install braking wheel (5) at braking pivot (4) both ends, the direction of rotation of axletree (1) is opposite with the direction of rotation of braking pivot (4), brake assembly satisfies:
under normal conditions, the brake assembly is suspended in the vehicle chassis and is not in contact with the ground;
during emergency braking, the brake assembly is pressed, and the brake wheel (5) is contacted with the ground.
2. A gear-driven reverse wheel emergency brake device according to claim 1, characterized in that the gear set comprises a brake gear (9) arranged on the brake rotating shaft (4) and a driving gear (2) mounted on the axle (1), the brake gear (9) is connected with the driving gear (2).
3. A gear-driven reverse wheel emergency brake device according to claim 2, characterised in that the brake gear (9) and the drive gear (2) are intermeshed.
4. A gear-driven reverse wheel emergency braking device according to claim 2, characterized in that the braking gear (9) and the driving gear (2) are connected by a transmission assembly (3) comprising an intermediate gear (8) connected to the driving gear (2) and a transmission chain (7) connecting the driving gear (2) and the intermediate gear (8), the intermediate gear (8) being engaged with the braking gear (9).
5. A gear-driven reverse wheel emergency brake assembly according to claim 2, wherein said brake gear (9) is a one-way ratchet.
6. A gear-driven reverse wheel emergency brake device according to claim 1, wherein a hydraulic unit (6) for pressing down the brake assembly is mounted on the upper portion of the brake assembly, and a switch of the hydraulic unit (6) is disposed in the cab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910141883.0A CN111605520A (en) | 2019-02-26 | 2019-02-26 | Gear-driven reverse wheel emergency braking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910141883.0A CN111605520A (en) | 2019-02-26 | 2019-02-26 | Gear-driven reverse wheel emergency braking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111605520A true CN111605520A (en) | 2020-09-01 |
Family
ID=72195809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910141883.0A Pending CN111605520A (en) | 2019-02-26 | 2019-02-26 | Gear-driven reverse wheel emergency braking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111605520A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113550989A (en) * | 2021-09-18 | 2021-10-26 | 深圳小木科技有限公司 | Emergency braking device based on power drive |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2081360U (en) * | 1990-01-05 | 1991-07-24 | 陈梁 | Automatic brake device |
| JPH11321588A (en) * | 1998-05-20 | 1999-11-24 | Kunihiro Imai | Urgency stop device for automobile |
| CN2476469Y (en) * | 2001-05-29 | 2002-02-13 | 牟其海 | Vehicle brake auxiliary device |
| CN200939872Y (en) * | 2006-08-26 | 2007-08-29 | 夏培根 | Automobile auxiliary brake device |
| CN106828445A (en) * | 2017-02-22 | 2017-06-13 | 南京航空航天大学 | A kind of car emergency complemental brake system and method |
-
2019
- 2019-02-26 CN CN201910141883.0A patent/CN111605520A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2081360U (en) * | 1990-01-05 | 1991-07-24 | 陈梁 | Automatic brake device |
| JPH11321588A (en) * | 1998-05-20 | 1999-11-24 | Kunihiro Imai | Urgency stop device for automobile |
| CN2476469Y (en) * | 2001-05-29 | 2002-02-13 | 牟其海 | Vehicle brake auxiliary device |
| CN200939872Y (en) * | 2006-08-26 | 2007-08-29 | 夏培根 | Automobile auxiliary brake device |
| CN106828445A (en) * | 2017-02-22 | 2017-06-13 | 南京航空航天大学 | A kind of car emergency complemental brake system and method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113550989A (en) * | 2021-09-18 | 2021-10-26 | 深圳小木科技有限公司 | Emergency braking device based on power drive |
| CN113550989B (en) * | 2021-09-18 | 2021-12-14 | 深圳小木科技有限公司 | Emergency braking device based on power drive |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200901 |
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| RJ01 | Rejection of invention patent application after publication |