CN106704420A - Eccentric shaft type wet multi-disc brake - Google Patents
Eccentric shaft type wet multi-disc brake Download PDFInfo
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- CN106704420A CN106704420A CN201710204190.2A CN201710204190A CN106704420A CN 106704420 A CN106704420 A CN 106704420A CN 201710204190 A CN201710204190 A CN 201710204190A CN 106704420 A CN106704420 A CN 106704420A
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- Prior art keywords
- brake
- braking
- eccentric shaft
- piston rod
- wet
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/28—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged apart from the brake
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/24—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member
- F16D55/26—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member without self-tightening action
- F16D55/28—Brakes with only one rotating disc
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
- F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/02—Fluid-pressure mechanisms
- F16D2125/10—Plural pistons interacting by fluid pressure, e.g. hydraulic force amplifiers using different sized pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/18—Mechanical mechanisms
- F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses an eccentric shaft type wet multi-disc brake. The multi-disc brake comprises a wet brake, a hydraulic cylinder and a transmission mechanism which are arranged outside the wet brake, wherein the hydraulic cylinder comprises a parking brake mechanism and a travelling brake mechanism; the transmission mechanism comprises a universal joint, a connecting rod, an adjusting arm and an eccentric shaft; the eccentric ratio of a rotating arm to the eccentric shaft is i. The eccentric shaft type wet multi-disc brake is simple in structure and reasonable in design, the hydraulic cylinder is arranged outside the wet brake, the problems of aging and oil leakage of a built-in piston seal caused by high temperature generated by continuous brake can be completely solved, the failure of the wet brake can be reduced, functions of travelling braking, parking braking and emergency braking can be achieved, and the stress of a hydraulic system or the operating force of a brake pedal can be greatly reduced. The eccentric shaft type wet multi-disc brake is convenient to use and operate, has strong practicality and good use effect, and facilitates popularization and application.
Description
Technical field
The invention belongs to technical field of engineering machinery, and in particular to a kind of eccentric shaft type wet multi-disc brake.
Background technology
Automotive brake is one of most important part of automobile, and its braking ability directly influences the peace of running car
Quan Xing, brake is to make car deceleration as desired or stopped in most short distance, is broadly divided into two kinds of drum-type and disc type.Drum
Although formula brake car low cost, dust-proof, its size is big, quality weight, not easy heat radiation, wet brake good heat dissipation, and
Insensitivity is good, and size and weight are small.Multi-disk wet brake in wet brake is that a kind of friction plate is operated in immersion oil
Wet brake in enclosed environment, it has braking moment big, long service life, anti-ageing moves back and contamination resistance is strong, exempt from dimension
The advantages of repairing, therefore using increasingly extensive in the brakes of engineering truck.
But existing wet multi-disc brake complex structure, although can realize braking function, but there are problems that it is a lot,
Reliability is relatively low, with high costs, hinders promoting the use of for wet multi-disc brake.Such as Application No. 201520762901.4
Chinese patent discloses a kind of hydraulic pressure return multi-disk wet brake, and it is wet that its brake piston and sealing device are arranged in brake
In formula arrester shell body, brake oil hydraulic chamber is provided with brake cylinder body, is frequently braked in braking procedure, cause braking
Device temperature is too high, causes brake oil liquid temperature to spend easily gasification high, and vapour lock is produced in brake pipe, and extension brake reaction time is very
To braking moment is reduced, braking safety is had a strong impact on, secondly the too high sealing ring that can cause brake piston of temperature fails, and loses
Sealing function causes brake fluid to leak, and brake-pipe pressure is lost in, and then causes brake fade.Therefore, one kind is nowadays lacked
Simple structure, low cost, wet multi-disc brake apparatus reasonable in design, the present invention are that one kind can realize travelling brake, parking
Braking and three wet multi-disc brakes of function of brake hard, system is arranged at by by brake piston and brake oil sap cavity body
Outside dynamic device, wet brake parts are solved and the problems such as brake oil liquid temperature spends high, sealing difference, so as to improve system
The functional reliability of dynamic device, convenient later maintenance, it is ensured that the operation safety of vehicle.The present apparatus can completely be applicable automobile simultaneously
Originally the braking control system having, is greatly lowered installation cost.
The content of the invention
The technical problems to be solved by the invention are for above-mentioned deficiency of the prior art, there is provided a kind of eccentric shaft type
Wet multi-disc brake, it is its simple structure, reasonable in design, it is arranged on outside wet brake by by hydraulic cylinder, thoroughly solve
The high temperature that is produced due to continuous braking and cause the problem of built-in piston seal aging, oil leak, reduce wet brake
Failure, while travelling brake, three functions of parking braking and brake hard can be realized, substantially reduces hydraulic system pressure again
Or brake pedal power, practical using easy to operate, using effect is good, is easy to promote the use of.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of eccentric shaft type wet multi-disc brake,
It is characterized in that：Including wet brake and the hydraulic cylinder and transmission mechanism that are arranged on outside wet brake, the hydraulic cylinder
Including parking and braking mechanism and service brake mechanism, the parking and braking mechanism includes parking braking cylinder body and is arranged on parking system
Parking braking piston rod and disc spring group in dynamic cylinder body, the parking braking piston rod is hollow structure inside, the disc spring group
One end contacted with parking braking cylinder body phase, the other end of the disc spring group is enclosed within parking braking piston rod, it is described driving system
Motivation structure includes that the service brake cylinder body of service brake piston rod, bottom and parking braking cylinder body openend cooperation and setting are expert at
Piston rod return spring in car brake cylinder casing, the service brake cylinder body openend is provided with service brake cylinder cap, described to stay
The first driving brake piston rod through-hole is provided with the bottom of car brake cylinder casing and the piston head of parking braking piston rod, it is described
The bottom of service brake cylinder body is provided with the second service brake piston rod through-hole, and the piston shaft of the service brake piston rod is passed through
The first driving brake piston rod through-hole stretches out parking braking cylinder body, and the piston head of the service brake piston rod passes through second
Service brake piston rod through-hole is in contact with piston rod return spring, and the service brake piston rod is consolidated with parking braking piston rod
Fixed connection, the side wall of the piston head, the bottom of service brake cylinder body and parking braking cylinder body of the parking braking piston rod is formed
Parking braking liquid room, the parking braking liquid room offers parking braking oilhole, the row on the side wall of parking braking cylinder body
The side wall of the piston head, the bottom of service brake cylinder body and service brake cylinder body of car brake piston bar forms service brake liquid room,
The service brake liquid room offers service brake oilhole on the side wall of driving brake cylinder casing；The transmission mechanism includes universal
Adjustment arm and the eccentric shaft for connecing is bonded with adjustment arm that section and the connecting rod and link transmission of cardan drive connection are connected, it is described
The piston shaft that universal joint stretches out parking braking cylinder body with service brake piston rod is fixedly connected, and the turning arm is inclined with eccentric shaft
Heart ratio is i, and the turning arm is α ° of angle with the angle of connecting rod, and the connecting rod is angle beta ° with the angle of universal joint, the eccentricity ratio
I, α ° of angle and angle beta ° meet i × cos α × sin β>1.
A kind of above-mentioned eccentric shaft type wet multi-disc brake, it is characterised in that：The wet brake includes wet type system
Dynamic device housing and the wet brake cover plate being detachably connected with wet brake housing, are set in the wet brake housing
There are braking platen and friction pair, rotating disk is provided with the wet brake cover plate, set on the wet brake cover plate
There is the eccentric shaft through-hole passed through for eccentric shaft, the rotating disk is fixedly connected with eccentric shaft, the side of the braking platen is set
There are multiple clamp screw wedge-shaped slots, ball is provided with the clamp screw wedge-shaped slot, ball is provided with the rotating disk and is led to
Hole, the opposite side of the braking platen is connected with braking platen return spring, the braking platen return spring and wet braking
Device housing is in contact, and the friction pair includes static friction piece and movable friction plate, and the static friction piece connects with wet brake housing
Connect, the movable friction plate is fixedly connected with power transmission shaft.
A kind of above-mentioned eccentric shaft type wet multi-disc brake, it is characterised in that：Also include multiple brake clearance adjustment parts,
One end of the brake clearance adjustment part is fixedly connected with rotating disk, the other end and the braking platen of the brake clearance adjustment part
It is flexibly connected.
A kind of above-mentioned eccentric shaft type wet multi-disc brake, it is characterised in that：Set on the wet brake cover plate
There are multiple, direction of rotation identical cover plate spiral wedge-shaped slots relative with clamp screw wedge shape groove location.
A kind of above-mentioned eccentric shaft type wet multi-disc brake, it is characterised in that：Including hydraulic cylinder support frame and be enclosed within partially
Pivot flange on heart axle, the hydraulic cylinder support frame includes the support set that is enclosed within eccentric shaft and is fixedly connected with support set
Supporting plate, the supporting plate is fixedly connected with the cylinder plate of parking braking cylinder body, and one end and the hydraulic cylinder of the pivot flange are supported
What frame was fixedly connected, the other end of the pivot flange is fixedly connected with wet brake cover plate.
A kind of above-mentioned eccentric shaft type wet multi-disc brake, it is characterised in that：Also include being arranged on service brake cylinder body
Outside unblock screw and locking nut, the motor vehicle braking system is covered and is provided with for unblock screwing through hole, the unblock screw
The inner through unblock screwing through hole be against on the piston head of parking braking piston rod, it is described unblock screw outer end and locking screw
Mother is fastenedly connected.
A kind of above-mentioned eccentric shaft type wet multi-disc brake, it is characterised in that：On the side wall of the parking braking cylinder body
Venthole is provided with, cooling-oil outlet and exhaust bolt are provided with the wet brake housing.
A kind of above-mentioned eccentric shaft type wet multi-disc brake, it is characterised in that：The brake clearance adjustment part is adjustment
Bolt.
The present invention has advantages below compared with prior art：
1st, simple structure of the invention, reasonable in design, realizes and using easy to operate.
2nd, the present invention is arranged on outside wet brake by by hydraulic cylinder, does not have wet brake built-in piston, it is to avoid
Brake piston sealing ring temperature is too high to be caused aging causes seal failure, brake oil liquid temperature to spend height to gasify in brake piping
Vapour lock and sealing ring is produced to lose sealing function and cause oil leak and then cause brake fade, so as to improve wet brake
Functional reliability, it is to avoid there is security incident, convenient later maintenance, it is ensured that the operation safety of vehicle；In addition, by liquid
Cylinder pressure is arranged on outside wet brake, when there is braking sealing failure, is tieed up without will be taken apart inside wet brake
Repair, it is only necessary to which hydraulic cylinder is repaired, be easy to operation, automotive service efficiency is not influenceed.
3. the present invention is eccentric shaft type structure, and turning arm is with eccentric shaft is than the angle α ° of i, turning arm and connecting rod and connects
Bar meets i × cos α × sin β with β ° of the angle of universal joint>1, the pulling force of service brake piston rod is acted on less than eccentric shaft
Thrust in rotating disk, had both realized braking, and hydraulic system pressure or brake pedal power are substantially reduced again, was easy to behaviour
Make.
4th, the present invention is multiple functional, and travelling brake, parking braking and urgent system can be realized by the structure of hydraulic cylinder
Move three functions, it is to avoid some wet multi-disc brakes are only capable of realizing service brake that function is not enough, it is necessary to install to again automobile
The trouble of holding brake device.
5th, the present invention is applicable the braking control system that automobile originally has, it is not necessary to automobile original structure is significantly changed again
Become, be easily installed, reduces cost.
In sum, simple structure of the present invention, reasonable in design, is arranged on outside wet brake by by hydraulic cylinder, thorough
Bottom solves the problems, such as to cause built-in piston seal aging, oil leak due to the high temperature that continuous braking is produced, and reduces wet type system
The failure of dynamic device, while travelling brake, three functions of parking braking and brake hard can be realized, substantially reduces hydraulic pressure system again
System pressure or brake pedal power, practical using easy to operate, using effect is good, is easy to promote the use of.
Below by drawings and Examples, technical scheme is described in further detail.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is the scheme of installation of turning arm of the present invention, connecting rod and universal joint.
Fig. 3 is the structural representation of present hydraulic cylinder.
Fig. 4 is the structural representation of wet brake of the present invention.
Fig. 5 is the scheme of installation of wet brake cover plate of the present invention, ball and braking platen.
Fig. 6 is the structural representation of present invention braking platen.
Fig. 7 is the structural representation of rotating disk of the present invention.
Description of reference numerals:
1-wet brake housing；2-wet brake cover plate；3-cooling-oil outlet；
4-brake clearance adjustment part；5-exhaust bolt；6-pivot flange；
7-hydraulic cylinder support frame；8-turning arm；9-eccentric shaft；
10-connecting rod；11-universal joint；12-service brake piston rod；
13-parking braking cylinder body；13-1-parking braking oilhole；13-2-venthole；
14-service brake cylinder body；14-1-service brake oilhole；15-unblock screw；
16-locking nut；17-parking braking piston rod；18-disc spring group；
19-piston rod return spring；20-service brake cylinder cap；21-wheel hub；
22-bearing；23-power transmission shaft；24-sealing ring；
25-braking platen；26-friction pair；27-rotating disk；
28-adpting flange；29-splined shaft；30-clamp screw wedge-shaped slot；
31-cover plate spiral wedge-shaped slot；32-ball；
33-braking platen return spring；34-ball through hole.
Specific embodiment
As shown in Figure 1, Figure 2 and Figure 3, the present invention includes wet brake and the hydraulic cylinder being arranged on outside wet brake
And transmission mechanism, the hydraulic cylinder include parking and braking mechanism and service brake mechanism, the parking and braking mechanism include parking
Brake cylinder casing 13 and the parking braking piston rod 17 being arranged in parking braking cylinder body 13 and disc spring group 18, the parking braking are lived
Stopper rod 17 is hollow structure inside, and one end of the disc spring group 18 is in contact with parking braking cylinder body 13, the disc spring group 18
The other end is enclosed within parking braking piston rod 17, and the service brake mechanism includes service brake piston rod 12, bottom and parking
The service brake cylinder body 14 that the openend of brake cylinder casing 13 coordinates and the piston rod return spring being arranged in service brake cylinder body 14
19, the openend of service brake cylinder body 14 is provided with service brake cylinder cap 20, the bottom of the parking braking cylinder body 13 and stays
The first driving brake piston rod through-hole, the bottom of the service brake cylinder body 14 are provided with the piston head of car brake piston bar 17
End is provided with the second service brake piston rod through-hole, and the piston shaft of the service brake piston rod 12 is made through the described first driving
Piston rod through-hole stretches out parking braking cylinder body 13, and the piston head of the service brake piston rod 12 is lived by the second service brake
Stopper rod through hole is in contact with piston rod return spring 19, and the service brake piston rod 12 is fixed with parking braking piston rod 17 and connected
Connect, the side wall shape of the piston head, the bottom of service brake cylinder body 14 and parking braking cylinder body 13 of the parking braking piston rod 17
Into parking braking liquid room, the parking braking liquid room offers parking braking oilhole 13- on the side wall of parking braking cylinder body 13
1, the side wall of the piston head, the bottom of service brake cylinder body 14 and service brake cylinder body 14 of the service brake piston rod 12 is formed
Service brake liquid room, the service brake liquid room offers service brake oilhole 14-1 on the side wall of driving brake cylinder casing 14；
The transmission mechanism includes the connecting rod 10 and the adjustment arm 8 of the drive connection of connecting rod 10 of universal joint 11 and the drive connection of universal joint 11
And the eccentric shaft 9 for connecing is bonded with adjustment arm 8, the universal joint 11 stretches out parking braking cylinder body 13 with service brake piston rod 12
Piston shaft is fixedly connected, and the turning arm 8 is i with the eccentricity ratio of eccentric shaft 9, and the turning arm 8 is angle with the angle of connecting rod 10
α °, the connecting rod 10 is angle beta ° with the angle of universal joint 11, and the eccentricity ratio i, α ° of angle and angle beta ° meet i × cos α × sin β>
1。
As shown in Fig. 1, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, in the present embodiment, the wet brake includes wet brake shell
It is provided with body 1 and the wet brake cover plate 2 being detachably connected with wet brake housing 1, the wet brake housing 1
Braking platen 25 and friction pair 26, rotating disk 27, the wet brake cover plate 2 are provided with the wet brake cover plate 2
On be provided with the eccentric shaft through-hole passed through for eccentric shaft 9, the rotating disk 27 is fixedly connected with eccentric shaft 9, the braking platen
25 side is provided with multiple clamp screw wedge-shaped slots 30, the clamp screw wedge-shaped slot 30 and is provided with ball 32, the rotation
Ball through hole 34 is provided with rotating disk 27, the opposite side of the braking platen 25 is connected with braking platen return spring 33, described
Braking platen return spring 33 is in contact with wet brake housing 1, and the friction pair 26 includes static friction piece and movable friction plate,
The static friction piece is connected with wet brake housing 1, and the movable friction plate is fixedly connected with power transmission shaft 23.
As shown in figure 1, in the present embodiment, also including multiple brake clearance adjustment parts 4, the brake clearance adjustment part 4
One end is fixedly connected with rotating disk 27, and the other end of the brake clearance adjustment part 4 is flexibly connected with braking platen 25.
As shown in figure 5, in the present embodiment, multiple and clamp screw wedge-shaped slot is provided with the wet brake cover plate 2
30 positions are relative, direction of rotation identical cover plate spiral wedge-shaped slot 31.
As shown in figure 1, in the present embodiment, including hydraulic cylinder support frame 7 and the pivot flange 6 being enclosed within eccentric shaft 9, it is described
Hydraulic cylinder support frame 7 include the support set being enclosed within eccentric shaft 9 and the supporting plate being fixedly connected with support set, the supporting plate with
The cylinder plate of parking braking cylinder body 13 is fixedly connected, what one end of the pivot flange 6 was fixedly connected with hydraulic cylinder support frame 7, institute
The other end for stating pivot flange 6 is fixedly connected with wet brake cover plate 2.
As shown in figures 1 and 3, in the present embodiment, the also unblock screw 15 including being arranged on outside service brake cylinder body 14
With locking nut 16, it is provided with the service brake cylinder cap 20 for unblock screwing through hole, the inner of the unblock screw 15 is worn
Cross unblock screwing through hole to be against on the piston head of parking braking piston rod 12, outer end and the locking nut 16 of the unblock screw 15
It is fastenedly connected.
As shown in figure 1, in the present embodiment, venthole 13-2 is provided with the side wall of the parking braking cylinder body 13, it is described
Cooling-oil outlet 3 and exhaust bolt 5 are provided with wet brake housing 1.
In the present embodiment, the brake clearance adjustment part 4 is adjustment bolt.
During specific implementation, bearing 22 is connected by power transmission shaft 23 with wheel hub 21, and the inner side of wheel hub 21 is provided with wet braking
Device housing 1, braking platen 26 and static friction piece are connected with wet brake housing 1.Wet brake housing 1, wet brake
The axle housing composition sealing space of cover plate 2 and automobile axle, filled with cooling oil, hydraulic cylinder has travelling brake, parking braking for inside
And three functions of brake hard.
When vehicle parking, disc spring group 18 is due to spring pressure by parking braking piston rod 17 to parking braking cylinder body
13 openend promotes, and parking braking piston rod 17 is fixedly connected with service brake piston rod 12, therefore parking braking piston rod
17 promotion service brake piston rods 12 move right, compression piston bar return spring 19, while service brake piston rod 12 drives
Universal joint 11 is moved to the openend of parking braking cylinder body 13, and universal joint 11 promotes connecting rod 10 to move, and connecting rod 10 drives adjustment arm 8
Rotate, adjustment arm 8 and the spline connection of eccentric shaft 9, eccentric shaft 9 are rotated disk 27 and rotate, rotating disk 27 drive ball 32 towards
Rotated at the shallow mouth position of braking wedged spiral groove 30 and cover plate wedged spiral groove 31, so that braking platen 26 is compressed, braking pressure
Disk 26 connects with braking platen return spring 33, therefore braking platen return spring 33 is in compressive state, brakes the band of platen 26
Sound friction plate is moved towards the direction of movable friction plate, so that the static friction piece of friction pair 25 and movable friction plate are compressed, then
Make the movable friction plate stop motion of rotation, so as to realize parking braking.
When a vehicle is started, it is necessary to release parking braking, braking valve for vehicle is now unclamped, from parking braking oilhole 13-2
Into hydraulic oil, hydraulic oil is acted in parking braking liquid room, so that promote parking braking piston 17 to overcome the pressure of disc spring group 18,
Moved to the cylinder bottom direction of parking braking cylinder body 13, parking braking piston rod 17 is to service brake piston 12 to parking braking cylinder body
The thrust of 13 openend disappears, because piston rod return spring 19 is in confined state in parking braking, therefore when row
After car brake piston 12 is to the distress resolves of piston rod return spring 19, the restoring force of piston rod return spring 19 can promote driving
Brake piston bar 12 sets back, and service brake piston 12 drives universal joint 11 to be moved to the openend away from parking braking cylinder body 13
Dynamic, universal joint 11 promotes connecting rod 10 to move, and connecting rod 10 drives adjustment arm 8 to rotate, and adjustment arm 8 is bonded with eccentric shaft 9 and connects, eccentric shaft
9 are rotated disk 27 rotates, and rotating disk 27 drives ball 32 towards braking wedged spiral groove 30 and cover plate wedged spiral groove 31
Rotated at Shen Kou positions, so that take-off the brake platen 26, is pressed because braking platen return spring 33 is in parking braking
Contracting state, therefore after the distress resolves of 26 pairs of braking platen return springs 33 of platen are braked, braking platen return spring 33
Restoring force can promote braking platen 26 to return original position, and braking platen 26 drives static friction piece away from the direction fortune of movable friction plate
Dynamic, so that the static friction piece of friction pair 25 and movable friction plate are separated, automobile releases parking braking, starts to start.
When vehicle needs braking in the process of moving, driver's brake pedal enters from service brake oilhole 14-1
Enter hydraulic oil, hydraulic oil is acted in service brake liquid room, hydraulic oil promotes the piston head of service brake piston rod 12 to driving
The openend movement of brake cylinder casing 14, the compression piston bar return spring 19 of service brake piston rod 12, therefore piston rod return bullet
Spring 19 is in compressive state in the process of moving, and service brake piston rod 12 drives the opening to parking braking cylinder body 13 of universal joint 11
Mouthful end movement, universal joint 11 promotes connecting rod 10 to move, and connecting rod 10 drives adjustment arm 8 to rotate, and adjustment arm 8 is bonded with eccentric shaft 9 and connects,
Eccentric shaft 9 is rotated disk 27 and rotates, and rotating disk 27 drives ball 32 towards braking wedged spiral groove 30 and cover plate tapered helical
Rotated at the shallow mouth position of groove 31, so as to compress braking platen 26, braking platen 26 is connected with braking platen return spring 33,
Therefore braking platen return spring 33 is in compressive state, and braking platen 26 drives static friction piece to be transported towards the direction of movable friction plate
It is dynamic, so that the static friction piece of friction pair 25 and movable friction plate are compressed, then make the movable friction plate stop motion of rotation, so that real
Existing service brake.
When in vehicle traveling process, parking braking liquid room once leaks decompression, it is necessary to brake hard, hydraulic oil will be from parking
Braking oilhole 13-2 leakages, hydraulic oil reduces to the thrust of the piston head of parking braking piston 17, and disc spring group 18 will promote parking system
Piston 17 is moved to the openend of parking braking cylinder body 13, so as to promote service brake piston rod 12 to service brake cylinder body 14
Openend movement, service brake piston rod 12 drive openend from universal joint 11 to parking braking cylinder body 13 move, universal joint
11 promotion connecting rods 10 are moved, and connecting rod 10 drives adjustment arm 8 to rotate, and adjusts arm 8 and the spline connection of eccentric shaft 9, and eccentric shaft 9 drives rotation
Rotating disk 27 rotates, and rotating disk 27 drives ball 32 towards braking wedged spiral groove 30 and the shallow mouth position of cover plate wedged spiral groove 31
Place's rotation, so as to compress braking platen 26, braking platen 26 drives static friction piece to be moved towards the direction of movable friction plate, so that
The static friction piece and movable friction plate of friction pair 25 are compressed, and then make the movable friction plate stop motion of rotation, realize brake hard work(
Energy.
Work as engine failure, it is impossible to when providing hydraulic oil to parking braking liquid room, it is impossible to release parking braking function and lead
When cause cannot drive a vehicle, indentation nut 16 can be unclamped, mechanical release screw 15 is inwardly tightened, mechanical release screw 15 overcomes dish
The elastic force of spring group 18, promotes parking braking piston rod 17 to be moved to the cylinder bottom direction of parking braking cylinder body 13, parking braking piston
Bar 17 drives service brake piston 12 to be moved to the cylinder bottom direction of parking braking cylinder body 13, so that take-off the brake platen 26, makes to rub
The static friction piece and movable friction plate for wiping secondary 25 are separated, and reach the purpose for releasing parking braking.
Due to the pulling force of service brake piston rod 12P is acted in rotating disk 27 for eccentric shaft 9
Thrust, it is desirable, therefore, to assure that turning arm 8 and the eccentricity ratio i of eccentric shaft 9, the angle α ° and connecting rod 10 of turning arm 8 and connecting rod 10 with
β ° of the angle of universal joint 11 meets i × cos α × sin β>1, you can realize F<P, had both realized braking, and hydraulic pressure system is substantially reduced again
System pressure or brake pedal power, in the present embodiment, take α °=17 °, β °=90 °, i=7.
By setting cover plate spiral wedge-shaped slot 31 on wet brake cover plate 2, braking spiral shell is set on braking platen 25
Rotation wedge-shaped slot 30, ball 32 is placed in cover plate spiral wedge-shaped slot by the ball through hole 34 in rotating disk 27, a part for ball 32
In 31, another part of ball 32 is placed in clamp screw wedge-shaped slot 30, by the setting of double-wedge groove, increased ball 32
Motion spacing, good braking effect.
After through use after a while, because movable friction plate and static friction sector-meeting produce wear extent, between causing friction plate
Brake clearance can be more than initial value, during braking, due to needing to overcome the brake clearance of increase, therefore brake reaction time to increase
It is long, extend braking distance, influence parking safety.Therefore brake clearance adjustment part 4 is set, and in the present embodiment, brake clearance is adjusted
One integral piece 4 is adjustment bolt, when brake clearance increases, rotates the spacing of adjustment bolt, adjustment braking platen 25 and rotating disk 27
From, play a part of brake clearance between regulation friction plate, so as to shorten brake reaction time, braking reliability is improve, use
Effect is good.
Because the part in hydraulic cylinder and wet brake will be moved, in order to keep unobstructed in moving process, staying
Venthole 13-2 is set on car brake cylinder casing 13, exhaust bolt 5 is set on wet brake housing 1.
The above, is only embodiments of the invention, and not the present invention is imposed any restrictions, every according to the technology of the present invention
Any simple modification, change and equivalent structure change that essence is made to above example, still fall within the technology of the present invention side
In the protection domain of case.
Claims (8)
1. a kind of eccentric shaft type wet multi-disc brake, it is characterised in that：Including wet brake and being arranged on wet brake
Outside hydraulic cylinder and transmission mechanism, the hydraulic cylinder includes parking and braking mechanism and service brake mechanism, the parking braking
Mechanism includes parking braking cylinder body (13) and the parking braking piston rod (17) being arranged in parking braking cylinder body (13) and disc spring
Group (18), the parking braking piston rod (17) is hollow structure inside, one end of the disc spring group (18) and parking braking cylinder
Body (13) is in contact, and the other end of the disc spring group (18) is enclosed within parking braking piston rod (17), the service brake mechanism
Including service brake piston rod (12), bottom and parking braking cylinder body (13) openend coordinate service brake cylinder body (14) and set
The piston rod return spring (19) in driving brake cylinder casing (14) is put, service brake cylinder body (14) openend is provided with row
It is respectively provided with car brake cylinder head (20), the bottom of the parking braking cylinder body (13) and the piston head of parking braking piston rod (17)
There is the first driving brake piston rod through-hole, the bottom of the service brake cylinder body (14) is provided with the second service brake piston rod and leads to
Hole, the piston shaft of the service brake piston rod (12) stretches out parking braking cylinder through the described first driving brake piston rod through-hole
Body (13), the piston head of the service brake piston rod (12) is by the second service brake piston rod through-hole and piston rod return bullet
Spring (19) is in contact, and the service brake piston rod (12) is fixedly connected with parking braking piston rod (17), the parking braking
The side wall of the piston head, the bottom of service brake cylinder body (14) and parking braking cylinder body (13) of piston rod (17) forms parking braking
Liquid room, the parking braking liquid room offers parking braking oilhole (13-1) on the side wall of parking braking cylinder body (13), described
The side wall of the piston head, the bottom of service brake cylinder body (14) and service brake cylinder body (14) of service brake piston rod (12) is formed
Service brake liquid room, the service brake liquid room offers service brake oilhole (14- on the side wall of driving brake cylinder casing (14)
1)；
The transmission mechanism includes connecting rod (10) and connecting rod (10) transmission of universal joint (11) and universal joint (11) drive connection
The adjustment arm (8) of connection and it is bonded the eccentric shaft (9) that connects, the universal joint (11) and service brake piston rod with adjustment arm (8)
(12) piston shaft for stretching out parking braking cylinder body (13) is fixedly connected, and the turning arm (8) is i with the eccentricity ratio of eccentric shaft (9),
The turning arm (8) is α ° of angle with the angle of connecting rod (10), and the connecting rod (10) is angle beta ° with the angle of universal joint (11), described
Eccentricity ratio i, α ° of angle and angle beta ° meet i × cos α × sin β>1.
2. according to a kind of eccentric shaft type wet multi-disc brake described in claim 1, it is characterised in that：The wet brake
The wet brake cover plate (2) being detachably connected including wet brake housing (1) and with wet brake housing (1), it is described
It is provided with wet brake housing (1) in braking platen (25) and friction pair (26), the wet brake cover plate (2) and is set
There is rotating disk (27), the eccentric shaft through-hole passed through for eccentric shaft (9), the rotation are provided with the wet brake cover plate (2)
Rotating disk (27) is fixedly connected with eccentric shaft (9), and the side of braking platen (25) is provided with multiple clamp screw wedge-shaped slots
(30) ball (32), is provided with the clamp screw wedge-shaped slot (30), ball through hole is provided with the rotating disk (27)
(34), the opposite side of braking platen (25) is connected with braking platen return spring (33), the braking platen return spring
(33) it is in contact with wet brake housing (1), the friction pair (26) includes static friction piece and movable friction plate, the static friction
Piece is connected with wet brake housing (1), and the movable friction plate is fixedly connected with power transmission shaft (23).
3. according to a kind of eccentric shaft type wet multi-disc brake described in claim 1, it is characterised in that：Also include multiple braking
Gap adjustment part (4), one end of the brake clearance adjustment part (4) is fixedly connected with rotating disk (27), and the brake clearance is adjusted
The other end of one integral piece (4) is flexibly connected with braking platen (25).
4. according to a kind of eccentric shaft type wet multi-disc brake described in claim 2, it is characterised in that：The wet brake
Multiple, direction of rotation identical cover plate spiral wedge-shaped slots relative with clamp screw wedge-shaped slot (30) position are provided with cover plate (2)
(31)。
5. according to a kind of eccentric shaft type wet multi-disc brake described in claim 1, it is characterised in that：Including hydraulic cylinder support
Frame (7) and the pivot flange (6) being enclosed within eccentric shaft (9), the hydraulic cylinder support frame (7) is including being enclosed within eccentric shaft (9)
Support set and the supporting plate being fixedly connected with support set, the supporting plate are fixedly connected with the cylinder plate of parking braking cylinder body (13),
What one end of the pivot flange (6) was fixedly connected with hydraulic cylinder support frame (7), the other end of the pivot flange (6) with it is wet
Formula brake cover plate (2) is fixedly connected.
6. according to a kind of eccentric shaft type wet multi-disc brake described in claim 1, it is characterised in that：Also it is expert at including setting
Car brake cylinder casing (14) outside unblock screw (15) and locking nut (16), confession is provided with the service brake cylinder cap (20)
Unblock screwing through hole, the inner of the unblock screw (15) is against the work of parking braking piston rod (12) through unblock screwing through hole
On chock plug, the outer end of unblock screw (15) is fastenedly connected with locking nut (16).
7. according to a kind of eccentric shaft type wet multi-disc brake described in claim 1, it is characterised in that：The parking braking cylinder
Venthole (13-2) is provided with the side wall of body (13), be provided with the wet brake housing (1) cooling-oil outlet (3) and
Exhaust bolt (5).
8. according to a kind of eccentric shaft type wet multi-disc brake described in claim 4, it is characterised in that：The brake clearance is adjusted
One integral piece (4) is adjustment bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710204190.2A CN106704420B (en) | 2017-03-30 | 2017-03-30 | A kind of eccentric shaft type wet multi-disc brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710204190.2A CN106704420B (en) | 2017-03-30 | 2017-03-30 | A kind of eccentric shaft type wet multi-disc brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106704420A true CN106704420A (en) | 2017-05-24 |
| CN106704420B CN106704420B (en) | 2018-08-03 |
Family
ID=58887361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710204190.2A Expired - Fee Related CN106704420B (en) | 2017-03-30 | 2017-03-30 | A kind of eccentric shaft type wet multi-disc brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106704420B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107152476A (en) * | 2017-07-07 | 2017-09-12 | 湖北康晨安宝矿业设备有限责任公司 | A kind of safety-type brake apparatus of pneumatic decompression suitable for mine |
| CN107299946A (en) * | 2017-08-23 | 2017-10-27 | 龙岩文伍车桥制造有限公司 | A kind of wet multi-disc brake |
| CN108131405A (en) * | 2017-12-22 | 2018-06-08 | 西安科技大学 | A kind of energy regenerating wet multi-disc brake |
| CN108591594A (en) * | 2018-05-24 | 2018-09-28 | 星光农机股份有限公司 | Hydraulic valve neutral gear positioning device, hydraulic valve and neutral gear positioning device |
| CN109707766A (en) * | 2019-03-06 | 2019-05-03 | 莱州亚通重型装备有限公司 | A kind of wet brake preventing venthole bleed |
| CN109849871A (en) * | 2019-03-25 | 2019-06-07 | 核心驱动科技（金华）有限公司 | Parking braking system and vehicle |
| CN110861624A (en) * | 2019-11-05 | 2020-03-06 | 南京经纬达汽车科技有限公司 | Distributed braking system with parking function and braking pressure vector control method thereof |
| CN111503188A (en) * | 2019-11-28 | 2020-08-07 | 河北埃克斯福动力科技有限公司 | Actuating mechanism for vehicle full-disc brake |
| CN112032225A (en) * | 2020-09-24 | 2020-12-04 | 吉林大学青岛汽车研究院 | Wet-type multi-disc brake with shifting fork force-increasing mechanism and using method thereof |
| CN113565899A (en) * | 2021-07-29 | 2021-10-29 | 山东力得汽车科技股份有限公司 | Fully-sealed pneumatic wet brake |
| CN114701468A (en) * | 2022-03-29 | 2022-07-05 | 淄博爱科工矿机械有限公司 | Stall intelligent protection system |
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| CN108591594A (en) * | 2018-05-24 | 2018-09-28 | 星光农机股份有限公司 | Hydraulic valve neutral gear positioning device, hydraulic valve and neutral gear positioning device |
| CN109707766A (en) * | 2019-03-06 | 2019-05-03 | 莱州亚通重型装备有限公司 | A kind of wet brake preventing venthole bleed |
| CN109849871A (en) * | 2019-03-25 | 2019-06-07 | 核心驱动科技（金华）有限公司 | Parking braking system and vehicle |
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| CN110861624A (en) * | 2019-11-05 | 2020-03-06 | 南京经纬达汽车科技有限公司 | Distributed braking system with parking function and braking pressure vector control method thereof |
| CN111503188A (en) * | 2019-11-28 | 2020-08-07 | 河北埃克斯福动力科技有限公司 | Actuating mechanism for vehicle full-disc brake |
| CN111503188B (en) * | 2019-11-28 | 2021-10-01 | 河北埃克斯福动力科技有限公司 | Actuating mechanism for vehicle full-disc brake |
| CN112032225A (en) * | 2020-09-24 | 2020-12-04 | 吉林大学青岛汽车研究院 | Wet-type multi-disc brake with shifting fork force-increasing mechanism and using method thereof |
| CN112032225B (en) * | 2020-09-24 | 2024-03-22 | 吉林大学青岛汽车研究院 | Wet type multi-disc brake with shifting fork force increasing mechanism and using method thereof |
| CN113565899A (en) * | 2021-07-29 | 2021-10-29 | 山东力得汽车科技股份有限公司 | Fully-sealed pneumatic wet brake |
| CN114701468A (en) * | 2022-03-29 | 2022-07-05 | 淄博爱科工矿机械有限公司 | Stall intelligent protection system |
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