CN201262206Y - Roller type mechanical brake - Google Patents
Roller type mechanical brake Download PDFInfo
- Publication number
- CN201262206Y CN201262206Y CNU2008201726190U CN200820172619U CN201262206Y CN 201262206 Y CN201262206 Y CN 201262206Y CN U2008201726190 U CNU2008201726190 U CN U2008201726190U CN 200820172619 U CN200820172619 U CN 200820172619U CN 201262206 Y CN201262206 Y CN 201262206Y
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- roller
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- wheel
- mechanical brake
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Abstract
The utility model belongs to the field of mechanical brakes and provides a roller-type mechanical brake, particularly a roller-type overrunning clutch mechanism, in which the spider is the internal spider. The roller-type overrunning clutch mechanism is characterized in that the spring ejector pin mechanism on the internal spider (1) inside the roller-type overrunning clutch mechanism with internal spider is removed and replaced by a roller-fastening mechanism (4), wherein, the roller-fastening mechanism (4) is arranged close to the position of the original spring ejector pin mechanism, and can make a limited movement in the axial direction of the internal spider (1), fasten a roller (2) inside the mechanism in the working position under the action of an operable external force, and go apart from the roller (2) under the action of an operable external force.
Description
One, technical field
The utility model is a kind of roller type mechanical brake that belongs to the mechanical brake field.
Two, background technique
We know that in mechanical field, break is a very important mechanical part, and it is widely used among each mechanical industry.With the automotive field is example, and the significance of break is conspicuous.
But we also know simultaneously, and the break that uses on automobile at present almost is mechanical face friction type, has both utilized the fricative braking moment between rotatable member and fixed element two working surfaces to make car deceleration or parking.As can be seen, the working life that a main problem of this mode of braking is a braking member is relatively all shorter, needs frequent replacing, so, be very inconvenient comparatively speaking.
Three, model utility content
The purpose of this utility model is to propose a kind of traditional face friction mode that changes, and adopts the principle technological scheme of long roller type mechanical brake relatively in structure relatively simple working life that the mode of rolling friction realizes braking purpose.
The utility model is to realize like this, having star-wheel in the mechanism is the roller-type overrunning clutch mechanism of star-wheel, it is characterized in that: be that the spring knock pin mechanism that is installed on the star-wheel 1 in the roller-type overrunning clutch mechanism of star-wheel removes with star-wheel, with one be installed near the former spring knock pin mechanism position can along radially doing of star-wheel 1 constrained that move and also can be under the effect that can operate external force the roller in the mechanism 2 be held out against on the working position and can be in that can to operate the roller puller mechanism 4 that itself and roller 2 are thrown off alternative.
The working surface that roller puller mechanism 4 in the roller type mechanical brake, roller 2 reach corresponding with it star-wheel 1 can be made into the structure that distributes along the radial centre lines bilateral symmetry of roller puller mechanism 4.
Can be at roller puller mechanism 4 along star-wheel 1 radially to the moving given distance of center of circle direction displacement, and install additional in the top a length corresponding with roller 2 length also can make it that roller 2 is pressed closer the cylindrical roller 5 that holds out against on the working position can operating under the external force effect indirectly-acting by roller puller mechanism 4.
Can operate external force and can be elastic force or mechanical lever power or electromagnetic force or hydraulic coupling or atmospheric pressure or aforementioned several power is used in combination.
Can operate external force and can be and adopt mechanical lever power or electromagnetic force or hydraulic coupling or atmospheric pressure by roller puller mechanism 4 roller 2 to be held out against on the working position and cancels the back in above-mentioned power by elastic force roller puller mechanism 4 to be resetted, also can be to adopt elastic force to hold out against roller 2 on the working position by roller puller mechanism 4 and use mechanical lever power or electromagnetic force or hydraulic coupling or atmospheric pressure reset roller puller mechanism 4.
The entity part of the carrying roller 2 at the star-wheel 1 working surface place corresponding with roller 2 and outer shroud 3 can be with can substituting along the roller cushion block 6 that star-wheel 1 is radially done the ladder rectangle of constrained radial motion of being separately made on the star-wheel 1, and between an end and star-wheel 1 in close star-wheel 1 center of circle of roller cushion block 6, it is can be with the roller cushion block 6 main spring mechanisms 7 of top on roller 2 directions that its operative orientation is housed.
Can be in the outside of the position of the installation roller 2 on the star-wheel 1, installing one group can be with the pressure spring of roller 2 tops to roller puller mechanism 4 directions.
During specific design, generally speaking, can adopt and make star-wheel 1 is that fixed block outer shroud 3 is that revolving part is relatively good, can avoid the influence by roller 2 centrifugal force of generation when moving like this, though this influence is very slight, still should avoid under possible situation.
Less relatively for braking force; the mechanical system that period of braking is relatively short; can adopt star-wheel 1 is made integrally-built form; the characteristics of this structural type are that manufacture cost is relatively lower relatively simple for structure; but owing to be the overload protection form that has adopted common roller-type overrunning clutch; so when braking is because roller 2 is relatively large by the positive pressure that 3 pairs of star-wheels of outer shroud 1 produce; so; though roller 2 is rolling friction; and the speed of wearing and tearing is much smaller than traditional face friction situation; but for the roller type mechanical brake that employing has roller cushion block 6 and main spring mechanism 7 structures, the speed of its wearing and tearing still want faster.
So, for ordinary circumstance, for example be used for the roller type mechanical brake of automobile aspect, it is reasonable adopting the roller type mechanical brake that has roller cushion block 6 and main spring mechanism 7 structures.
When roller type mechanical brake is specifically worked, when roller type mechanical brake is not worked, roller puller mechanism 4 is in the off position that resets, so, basic principle according to roller-type overrunning clutch, at this moment roller 2 is on the position looser between star-wheel 1 and the outer shroud 3, therefore can't drive outer shroud 3, so outer shroud 3 is in the state that freely rotates, when needs are braked, roller puller mechanism 4 presses closer roller 2 on the working position under the effect of external force, at this moment, roller-type overrunning clutch mechanism starts working, at this moment, because star-wheel 1 is fixed, so, the roller cushion block 6 that is compressed by main spring mechanism 7 that is installed on the star-wheel 1 has produced braking force by 2 pairs of outer shrouds 3 of roller, therefore played the purpose of braking, because roller cushion block 6 is split manufacturings, and main spring mechanism 7 has been housed in the lower end of roller cushion block 6, so, during work, carry out balance by load by the positive pressure of outer shroud 3 and 6 generations of 2 pairs of roller cushion blocks of roller and the elastic thrust of main spring mechanism 7 generations, elastic thrust one timing that produces when main spring mechanism 7, the maximum braking torque that roller type mechanical brake can produce is also just fixed thereupon, so, even the phenomenon that roller type mechanical brake skids has appearred in the overload of load at this moment, roller 2 is to be in relatively rotating under the state under a kind of relatively reasonable pressure with respect to outer shroud 3 and roller cushion block 6, this point is similar a bit to the working principle of common roller bearing, therefore, at this moment the abrasion condition of roller 2 just has bigger improvement, even overload is skidded for a long time, roller 2 does not have too big wearing and tearing yet in general.And because roller cushion block 6 adopted elastic mechanism, so can effectively absorb because the torsional oscillation that braking is produced, this just makes roller type mechanical brake have to slow down the function of impacting and isolating torsional oscillation preferably.
Because the utility model can satisfy the requirement of common mechanical equipment braking, and structure is relatively simple, working life is relatively also long, have functions such as slowing down impact and isolation torsional oscillation preferably, so, implement the back expectation and can receive more positive effect.
Four, description of drawings
The utility model has 3 accompanying drawings, Fig. 1 is the basic principle schematic of the roller type mechanical brake of one-way brake, Fig. 2 is the basic principle schematic of the roller type mechanical brake of bi-directional braking, and Fig. 3 is the basic principle schematic with roller type mechanical brake of roller cushion block and main spring mechanism.
In each figure: 1, star-wheel, 2, roller, 3, outer shroud, 4, the roller puller mechanism, 5, the cylindrical roller that holds out against, 6, the roller cushion block, 7, main spring mechanism.
Five, embodiment
Below, in conjunction with Figure of description, the utility model is described in further detail.
In mechanism shown in Figure 1, has the roller-type overrunning clutch mechanism that star-wheel is a star-wheel in the mechanism, it is characterized in that: be that the spring knock pin mechanism that is installed on the star-wheel 1 in the roller-type overrunning clutch mechanism of star-wheel removes with star-wheel, with one be installed near the former spring knock pin mechanism position can along radially doing of star-wheel 1 constrained that move and also can be under the effect that can operate external force the roller in the mechanism 2 be held out against on the working position and can be in that can to operate the roller puller mechanism 4 that itself and roller 2 are thrown off alternative.
In the mechanism, the working surface that the roller puller mechanism 4 in the roller type mechanical brake, roller 2 reach corresponding with it star-wheel 1 can be made into the structure that distributes along the radial centre lines bilateral symmetry of roller puller mechanism 4 in mechanism shown in Figure 2.
From Fig. 1, Fig. 2 as can be seen, during specific design, generally speaking, can adopt and make star-wheel 1 is that fixed block outer shroud 3 is that revolving part is relatively good, can avoid influence like this by roller 2 centrifugal force of generation when moving, though this influence is very slight, still should avoid under possible situation.
Less relatively for braking force; the mechanical system that period of braking is relatively short; can adopt star-wheel 1 is made integrally-built form; the characteristics of this structural type are that manufacture cost is relatively lower relatively simple for structure; but owing to be the overload protection form that has adopted common roller-type overrunning clutch; so when braking is because roller 2 is relatively large by the positive pressure that 3 pairs of star-wheels of outer shroud 1 produce; so; though roller 2 is rolling friction; and the speed of wearing and tearing is much smaller than traditional face friction situation; but for the roller type mechanical brake that employing has roller cushion block 6 and main spring mechanism 7 structures, the speed of its wearing and tearing still want faster.
In fact, the structure shape of roller puller mechanism 4 can be diversified, and its significant feature is roller 2 can be held out against on the working position, and can return to initial position when not needing to brake.
Can be at roller puller mechanism 4 along star-wheel 1 radially to the moving given distance of center of circle direction displacement, and install additional in the top a length corresponding with roller 2 length also can make it that roller 2 is pressed closer the cylindrical roller 5 that holds out against on the working position can operating under the external force effect indirectly-acting by roller puller mechanism 4.The purpose that adopts this structure is to improve the working environment state of roller 2 when brake slip, because the cylindrical roller 5 that holds out against all adopts the mode of rolling friction to contact in when work with roller 2, so at this moment the abrasion condition of the two all can significantly be better than situation with roller 2 employing plane contact.According to recently both at home and abroad to the research of roller-type overrunning clutch as can be known, in this case, the bearing capacity of free wheel device mechanism also might be greatly improved.
Can operate external force and can be elastic force or mechanical lever power or electromagnetic force or hydraulic coupling or atmospheric pressure or aforementioned several power is used in combination.
Can operate external force and can be and adopt mechanical lever power or electromagnetic force or hydraulic coupling or atmospheric pressure by roller puller mechanism 4 roller 2 to be held out against on the working position and cancels the back in above-mentioned power by elastic force roller puller mechanism 4 to be resetted, also can be to adopt elastic force to hold out against roller 2 on the working position by roller puller mechanism 4 and use mechanical lever power or electromagnetic force or hydraulic coupling or atmospheric pressure reset roller puller mechanism 4.
From the basic functional principle of roller-type overrunning clutch as can be known, the thrust to roller that spring knock pin mechanism in the mechanism produces is very little comparatively speaking, so, in this case, it is both economical adopting the mode of electromagnetic force and elastic force combination, at this moment, generally be to adopt electromagnetic force to reset, and roller puller mechanism 4 held out against combined method on the working position by elastic force.Illustrate, for example, when if we are used for automobile retarder with roller type mechanical brake mechanism, at this moment, the effect of roller type mechanical brake is exactly to play the purpose that makes vehicle speed retarding or braking where necessary, if at this moment we adopt electromagnetic force to reset, and roller puller mechanism 4 is held out against combined method on the working position by elastic force, not only can play the purpose of slowing down the speed of a motor vehicle or braking, and mechanism also has the effect of Parking Brake.During concrete work, when parking of automobile, electromagnetic mechanism such as common electromagnet are in off-position, so at this moment elastic mechanism in the mechanism such as common pressure spring begin roller puller mechanism 4 is held out against on the working position, that is to say that at this moment roller puller mechanism 4 holds out against roller 2 on the working position, so the free wheel device mechanism in the mechanism is in bonding state, so played the effect of parking braking, when car engine, generator has wherein produced electric current, so at this moment open the power switch of electromagnet, produced attraction force after electromagnet is charged, the active force that the connecting rod that makes roller puller mechanism 4 by the two is overcome pressure spring is got back on the initial reset position, at this moment roller type mechanical brake is thrown off, automobile can cruising, when in case of emergency, power supply by the brake switch tripping magnet, at this moment roller puller mechanism 4 will hold out against roller 2 on the working position under the effect of pressure spring, roller type mechanical brake is started working, because automobile can not stop immediately, so at this moment roller 2 is under the rolling slipping state under the normal load, therefore, roller type mechanical brake can be worked in this state for a long time, till automobile stops, as can be seen, this function of roller type mechanical brake also is of great use during to automobile downhill, because roller 2 can skid for a long time and can not damage, so, during automobile downhill, can make roller type mechanical brake in running order, like this, cooperate automotive brake just can improve traveling security largely.But, do like this and also have a problem, be exactly when vehicle failure is stopped, because electromagnet outage back roller type mechanical brake is in jointing state, thus be difficult to drag automobile, generally speaking, a standby power supply should be arranged, use during in order to scram.
For another: when roller type mechanical brake is used for the primary brake system of automobile, because maximum braking moment designs in advance, so, automobile is when braking, be locking phenomenon can not occur in general, therefore, just can save the anti-lock mechanism of automobile, reduce the manufacture cost of automobile to a certain extent.At this moment, the operated external force system of roller type mechanical brake generally can adopt hydraulic pressure or pressure system that roller puller mechanism 4 is held out against on the working position, the mechanism's mode that adopts pressure spring to reset is more convenient, design meets the traditional operating habit of driver on the one hand like this, on the other hand, because the steering force of braking is smaller comparatively speaking, so alleviate driver's labor intensity on can be largely, but adopt this structure a problem be that roller 2 is controlled at half contact or says the difficulty that has certain control aspect under the slight state of contact.So, in this case, can adopt along the roller type mechanical brake axially-aligned and organize roller 2, roller puller mechanism 4 more and the mode of roller cushion block 6 mechanisms of main spring mechanism 7 is housed, so, just can respectively organize the method that roller 2 mechanisms enter working state respectively by making, the method that also can be described as braking by grades solves this problem.
In a word, the compound mode that can operate external force should be carried out Combination Design flexibly according to actual conditions.
In Fig. 3, the entity part of the carrying roller 2 at the star-wheel 1 working surface place corresponding with roller 2 and outer shroud 3 can be with can substituting along the roller cushion block 6 that star-wheel 1 is radially done the ladder rectangle of constrained radial motion of being separately made on the star-wheel 1, and between an end and star-wheel 1 in close star-wheel 1 center of circle of roller cushion block 6, it is can be with the roller cushion block 6 main spring mechanisms 7 of top on roller 2 directions that its operative orientation is housed.
Generally speaking, the profile of roller cushion block 6 can be made the shape of ladder rectangle, also can make other shape, it is just impassable that its main purpose is that the working plane that makes roller cushion block 6 can not surpass design height under constraint conditio under the effect of main spring mechanism 7, therefore, just passable as long as the shape of roller cushion block 6 can satisfy function of use when actual design.
The design maximum braking moment that an important feature that adopts this mechanism of Fig. 3 is a roller type mechanical brake is not change with the variation of other factors in the mechanical system generally speaking, and this point and traditional roller-type overrunning clutch are different.Generally speaking, during specific design, according to different situations, can adopt the method for the suitable increase roller type mechanical brake radius of clean-up, come the positive pressure that 2 pairs of roller cushion blocks of roller 6 produce in braking process that reduces as far as possible, make little that the two contact stress tries one's best under possible situation, like this, just can effectively improve machine roller type mechanical brake working life.At this moment, because star-wheel 1 is fixed in the mechanism, so, the roller cushion block 6 that is compressed by main spring mechanism 7 that is installed on the star-wheel 1 has produced braking force by 2 pairs of outer shrouds 3 of roller, therefore played the purpose of braking, because roller cushion block 6 is split manufacturings, and main spring mechanism 7 has been housed in the lower end of roller cushion block 6, so, during work, carry out balance by load by the positive pressure of outer shroud 3 and 6 generations of 2 pairs of roller cushion blocks of roller and the elastic thrust of main spring mechanism 7 generations, elastic thrust one timing that produces when main spring mechanism 7, the maximum braking torque that roller type mechanical brake can produce is also just fixed thereupon, so, even the phenomenon that roller type mechanical brake skids has appearred in the overload of load at this moment, because roller 2 is to be in relatively rotating under the state under a kind of relatively reasonable pressure with respect to outer shroud 3 and roller cushion block 6, this point is similar a bit to the working principle of common roller bearing, adding that roller 2 is relative less with the contact stress between the roller cushion block 6, therefore, at this moment the abrasion condition of roller 2 just has bigger improvement, even overload is skidded for a long time, roller 2 does not have too big wearing and tearing yet in general.And because roller cushion block 6 adopted elastic mechanism, so can effectively absorb because impact and the torsional oscillation that braking is produced, this just makes roller type mechanical brake have to slow down the function of impacting and isolating torsional oscillation preferably.
Generally speaking, when adopting mechanical lever power to make up with elastic force, roller type mechanical brake can be used for the braking of small-sized machine, and as bicycle etc., because this compound mode is structurally fairly simple, cost is also lower.When adopting the combination of electromagnetic force and elastic force, can be used for the braking of general machinery, the characteristics of this compound mode are that the control mechanism occupation space is smaller, for large-scale roller type mechanical brake, electromagnet can be directly installed on the roller cushion block 6, and the control of this compound mode is also fairly simple.Under the situation that needs control brake time and braking process, generally can adopt and make up the motion of controlling roller puller mechanism 4, and realize by the method that hydraulic coupling or atmospheric pressure are controlled the pressure of 7 pairs of roller cushion blocks 6 of main spring mechanism by electromagnetic force and elastic force.
In case of necessity, can be in the outside of the position of the installation roller 2 on the star-wheel 1, installing one group can be with the pressure spring of roller 2 tops to roller puller mechanism 4 directions.
Sometimes because of the needs of project organization, make outer shroud 3 as fixed block possibly, and make star-wheel 1 as revolving part, because roller 2 rotates with star-wheel 1, so can produce certain centrifugal force, under the situation that adopts bi-directional braking, must have a roller 2 in every group of roller 2 and under action of centrifugal force, outer shroud 3 be produced a pressure, although the effect of this pressure is smaller comparatively speaking generally speaking, but when the specification of product is bigger, the outside of the position of the installation roller 2 on star-wheel 1, installing one group can still be necessary roller 2 top to the pressure spring of roller puller mechanism 4 directions.
Claims (9)
1, a kind of roller type mechanical brake, having star-wheel is the roller-type overrunning clutch mechanism of star-wheel, it is characterized in that: be that the spring knock pin mechanism that is installed on the star-wheel (1) in the roller-type overrunning clutch mechanism of star-wheel removes with star-wheel, with one be installed near the former spring knock pin mechanism position can along star-wheel (1) radially do constrained motion and also can be under the effect that can operate external force the roller in the mechanism (2) be held out against on the working position and can be in that can to operate the roller puller mechanism (4) that itself and roller (2) are thrown off alternative.
2, roller type mechanical brake according to claim 1 is characterized in that: the working surface that the roller puller mechanism (4) in the roller type mechanical brake, roller (2) reach corresponding with it star-wheel (1) can be made into the structure that distributes along the radial centre lines bilateral symmetry of roller puller mechanism (4).
3, roller type mechanical brake according to claim 1 and 2 is characterized in that: roller puller mechanism (4) can be made into its lower end be shaped on the rectangle that can operate coupling mechanism that external force connects and length direction and roller (2) length are corresponding cylindrical or with the rectangular shape of roller (2) contacting point band chamfering.
4, roller puller mechanism according to claim 3, it is characterized in that: can be at roller puller mechanism (4) along star-wheel (1) radially to the moving given distance of center of circle direction displacement, and install additional in the top a length corresponding with roller (2) length also can make it that roller (2) is pressed closer the cylindrical roller (5) that holds out against on the working position can operating under the external force effect indirectly-acting by roller puller mechanism (4).
5, roller type mechanical brake according to claim 1 and 2 is characterized in that: can operate external force and can be elastic force or mechanical lever power or electromagnetic force or hydraulic coupling or atmospheric pressure or aforementioned several power and be used in combination.
6, roller type mechanical brake according to claim 1 and 2, it is characterized in that: can operate external force and can be and adopt mechanical lever power or electromagnetic force or hydraulic coupling or atmospheric pressure roller (2) to be held out against on the working position and cancels the back in above-mentioned power roller puller mechanism (4) to be resetted, also can be that the employing elastic force holds out against roller (2) on the working position by roller puller mechanism (4) and use mechanical lever power or electromagnetic force or hydraulic coupling or atmospheric pressure reset roller puller mechanism (4) by elastic force by roller puller mechanism (4).
7, roller type mechanical brake according to claim 1 and 2, it is characterized in that: star-wheel (1) go up star-wheel (1) the working surface place corresponding with roller (2) and outer shroud (3) carrying roller (2) entity part can be separately made can radially to do the roller cushion block (6) of ladder rectangle of constrained radial motion along star-wheel (1) alternative, and between an end and star-wheel (1) in close star-wheel (1) center of circle of roller cushion block (6), it is can be with the main spring mechanism (7) of roller cushion block (6) top on roller (2) direction that its operative orientation is housed.
8, main spring according to claim 7 mechanism, it is characterized in that: main spring mechanism (7) can be the conventional machinery spring mechanism, also can substitute with controlled lever or hydraulic coupling or atmospheric pressure or electromagnetic force.
9, roller type mechanical brake according to claim 1 and 2 is characterized in that: can be in the outside of the position of the installation roller (2) on the star-wheel (1), and installing one group can be with the pressure spring of roller (2) top to roller puller mechanism (4) direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201726190U CN201262206Y (en) | 2008-09-28 | 2008-09-28 | Roller type mechanical brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201726190U CN201262206Y (en) | 2008-09-28 | 2008-09-28 | Roller type mechanical brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201262206Y true CN201262206Y (en) | 2009-06-24 |
Family
ID=40808679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201726190U Expired - Fee Related CN201262206Y (en) | 2008-09-28 | 2008-09-28 | Roller type mechanical brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201262206Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101684847B (en) * | 2008-09-28 | 2013-03-06 | 陈伯恒 | Roller type mechanical brake |
-
2008
- 2008-09-28 CN CNU2008201726190U patent/CN201262206Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101684847B (en) * | 2008-09-28 | 2013-03-06 | 陈伯恒 | Roller type mechanical brake |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090624 Termination date: 20110928 |