CN101020475A - Sealed liquid lubricator - Google Patents
Sealed liquid lubricator Download PDFInfo
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- CN101020475A CN101020475A CN 200710010665 CN200710010665A CN101020475A CN 101020475 A CN101020475 A CN 101020475A CN 200710010665 CN200710010665 CN 200710010665 CN 200710010665 A CN200710010665 A CN 200710010665A CN 101020475 A CN101020475 A CN 101020475A
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Abstract
The present invention relates to crawler type building machinery and conveyer technology, and is especially one kind of sealed liquid lubricator. The sealed liquid lubricator consists of elastic rubber ring, metal ring and conic rubber stopper with blind hole. It is mounted to counter bore in each crawler link, and the metal ring under the action of the elastic rubber ring reaches sealing, thrusting and stabilizing functions. The conic rubber stopper with blind hole seals the central oil hole of pin shaft in air balancing method. The oil cavity of the lubricated crawler may in different forms. The crawler with the sealed liquid lubricator has low running resistance, low power consumption, long service life and expanded application range.
Description
Technical field
The invention belongs to the crawler type construction machinery and equipment and carry the drive technology field.
Background technology
The construction machinery and equipment crawler belt can be divided into three types, first kind: dry type, not grease up, second kind: dry-type encapsulated, grease up, the third: seal lubrication type, filling lubricating oil.
The dry type crawler belt: grease up not, open wide between guide end face and track link counterbore bottom surface, the cancellation sealing member is unshielded, now reduces gradually, spare and accessory parts still have certain production and marketing.
Dry-type encapsulated crawler belt: be at each joint guide two ends dust ring to be housed, at the manual grease of smearing of shaft room, owing to the flowing power of grease is bad, lubricated can only be local, temporary transient during production.Especially under the low temperature condition, reality has been in the dry grinding state.When bulldozer or excavating machine were turned, the seal ring of a side was squeezed, and the seal ring of opposite side is because resilience is untimely, guide end face and the gap increase seal failure of chain link counterbore bottom surface, the silt accelerated wear test that avails oneself of the opportunity to get at this moment.After the wearing and tearing of the dust ring in the chain link are crushed, cause chain link axle head medial surface to contact and carried thrust function with cover end lateral surface, a resistance of advancing increases, and can see tangible wear track of two chain internodes and the metal powder that falls.From the excavating machine crawler belt of external import also is so, finds when overhaul is disassembled that the seal ring on both sides all is crushed, and loses sealing already.
What people intuitively saw is the crawler belt outside deterioration, yet causes the worn-down major cause to begin from guide inside exactly.Wearing and tearing are subjected to many condition effect such as carrying, speed, impurity intrusion, Part Surface Roughness, hardness, tolerance clearance, operating temperature, lubricating status.This wherein, impurity is invaded with fuel feeding is bad and is made the wearing and tearing aggravation.Both are cooresponding to be exactly sealing and lubrication problem.Be sealed into primarily with lubricated assisting in the relation mutually in sealing.For solving the deficiency that prior art exists, relevant enterprise manages to improve sealing member, but still adopts intrinsic lubricating method, and grease can not get replenishing on a pair of friction components surface, and can not form effective, lasting oil film, makes the shaft room wearing and tearing increase.Guide produces with respect to oil sealing static in the chain link counterbore and radially wobbles, rubs, and flat sealing member is hit, is extruded, and produces the plastic permanent deformation seal failure; Lip formula sealing member lost efficacy gradually with the guide sealing surface mill sassafras sealing that corroded by silt, and then got back to the dry type state again.
Above method is longer than the life-span before improving, still can not be permanent, and reason is a grease up still.Wearing and tearing make two bearing pin width between centerss adjacent one another are exceed design standard, interfere with the engagement of driven wheel, and consequently the pitch of crawler belt is elongated gradually, and crawler belt produces sidesway and very easily derails during turning.The mutual wearing and tearing aggravation of this abnormality and BOGEY WHEEL, track adjusting wheel, tugboat happens occasionally so that remove a joint, and reliability of service reduces by force, and serious not maintenance is worth clear-cut one batch and rots, and is the consumption rich and influential family of iron and steel, the energy.
We have also noticed overseas enterprise since calendar year 2001 simultaneously, and the excavating machine crawler belt sealing patent in the application of China national Department of Intellectual Property adopts grease lubrication equally, and its wearing and tearing are unavoidable.
Facts have proved: the crawler belt of every grease up, lubricated all is temporary transient.
And prolong crawler belt service life effective method is to realize hydraulic seal with lubricated between the guide inner sleeve, realize this goal " core technology is exactly the sealing in the track link counterbore ".
The seal lubrication type crawler belt: at each joint guide two ends sealing member is housed, shaft room filling lubricating oil, running resistance is little energy-saving and cost-reducing.Reusable when bearing pin, the overhaul of guide crawler belt, the crawler belt connecting link adopts split-type structural, easy accessibility.Cost an arm and a leg, this crawler belt service life is generally more than 5 years.
Yet the seal lubrication type crawler belt of prior art also just uses on bulldozer, does not find as yet to adopt on excavating machine.Though there is the mode of operation difference in two kinds of machineries, the closely conversion of workyard is subjected to road, time, cost limitations, and continuously tracked vehicle is unavoidable self walks.Construction import excavating machine crawler belt service life of mining area operation serious have only 2 years 03 months, and most life-span is not long.As seen, on excavating machine, adopt the seal lubrication type crawler belt to be necessary fully to increase the service life.
Find in the routine bulldozer crawler belt by introducing the D6 of U.S. Caterpillar, 203mm pitch sealing member (see accompanying drawing 7 elastic caoutchouc circles 1, seal ring 22, thrust washer 23) is 2.4mm through actual measurement thrust washer wall thickness, because there is chamfering in guide end face and endoporus intersection, the monolateral radial dimension deficiency of thrust washer and guide end face contact surface 2.4mm in fact.There is the thrust washer undercapacity, and then the existing property of certain office is arranged on using.China national Department of Intellectual Property discloses the patent of Amada Co., Ltd.'s JP-6301 application simultaneously: there is the thrust washer undercapacity equally in the open day 2002.11.20 of publication number CN1380216A.Sealing member is various again, and exposed easily being squeezed by hard thing outside hindered.
The monolateral radial dimension of the guide of arbitrary model crawler belt is all limited by design size, coexist in the sealing surface with the contacted thrust washer of guide sealing surface, sealing member, both thickness are subject in the monolateral radial dimension of guide, for guaranteeing minimum effective mechanical strength of sealing member, wherein, the thickness of thrust washer can only be done passive choosing folding sometimes in the space of remainder.The thrust washer wall is thin little with guide sealing surface area of contact, easy to wearly causes endplay to increase and makes seal failure.
Powerful impact when thrust washer bears the bulldozer turning, its protection seal ring is not subjected to any infringement, the airtight quality of its intensity decision crawler belt.Make seal failure once breakage must injure oil sealing, visible thrust washer is a requisite vital part.Solve the undercapacity problem of thrust washer, must increase its thickness, in limited space, just tied up the position of other sealing member like that, and dwindle the sealing member of thickness because undercapacity causes seal failure equally.
This deficiency begins to manifest from existing packing technique 203mm pitch, the following difficult liquid lubrication that realizes of 190mm pitch, and the 190mm pitch is dry grinding and lubricated demarcation line.As seen, the strength problem of thrust washer has constituted the bottleneck of the existing seal lubrication type crawler belt widespread use of restriction.
To sum up, there is following shortcoming in existing packing technique:
1, thrust washer undercapacity, sealing member is various, and difficulty of processing is big.
2, the seal lubrication type crawler belt has an innings existing property on using.
3, there is not thrust washer in the existing excavating machine 190mm pitch crawler belt, seal failure after ring wear is crushed, resistance to motion increases, and reduce service life.
Summary of the invention
The objective of the invention is to provide that a kind of project organization is reasonable, technology is simple, processing efficient height, energy-saving and cost-reducing, long service life, widely used sealed liquid lubricator.
For achieving the above object, the present invention is by the following technical solutions:
Sealed liquid lubricator is made up of elastic caoutchouc circle 1, becket 2, blind hole cone rubber plug 3.Include chain link counterbore 4, bearing pin 5, guide 6, chain link 7,8,9,10, center oilhole 11, described sealing arrangement only is equipped with an elastic caoutchouc circle 1 and a becket 2 in each chain link counterbore 4.Becket has been realized thrust, has been sealed, stablized three kinds of functions under the effect of elastic caoutchouc circle.(seeing accompanying drawing 1).
Below three kinds of functions of becket are illustrated one by one:
(1), described sealed liquid lubricator, it is characterized in that: the outside face of becket 2 is stepped, sealing surface identical with engagement surface area (seeing accompanying drawing 3a).
In the track link counterbore, finding out adaptable rational deployment is the key that solves lubricated crawler belt core packing technique.Many more, the monolateral radial dimensions of sealing member are more little, intensity is low more.Along with pitch is dwindled, limited space also dwindles thereupon in the chain link counterbore, and problem is just outstanding all the more.Therefore, technical best mode of dealing with problems is that the quantity of sealing member is dropped to bottom line.And then increase the monolateral radial dimension thickness that keeps sealing member, increase the mechanical strength of sealing member.The practice is " it is shared to remove the elastic caoutchouc circle in the chain link counterbore, and the whole of remainder are that the becket wall thickness is used ".And make the outside face of becket stepped, identical with the area of mating surfaces.
When bulldozer or excavating machine turnon left, becket non-tight face contacts with the guide sealing surface with chain link counterbore bottom surface, sealing surface, the friction drag of caterpillar block kiss the earth and the application force of drive wheel all concentrate on the becket, and becket bears huge axle pressure.At this moment, the thrust capacity that becket is powerful guarantees that axle head chain link medial surface is lasting in the design size scope with the gap of cover end chain link lateral surface, it is constant to stablize.Both are contact not, more not friction.Be in the becket between guide end face and counterbore bottom surface, when bearing immense pressure, also will bearing from the powerful impact that twist moment is caused during right-hand corner suddenly rapidly of bulldozer or excavating machine, the size and the endplay of impulsive force have relation.Left and right repeatedly like this motion check becket is hit, the worn-down ability to bear.This just requires becket to have enough intensity, impact resistance to adapt to; High-wearing feature guarantees thrust function and does not change state.Because the becket wall thickness increases, be lubricated more than a times of crawler belt thrust washer of existing 203mm pitch.The while contact surface increases to identical with guide sealing surface area again, so impact resistance increases.Compare ditto that pressure reduces under the effect of same axial power, the strength problem of thrust washer has obtained solving completely, and this moment, becket played the thrust pad circle.
(2), described sealed liquid lubricator, it is characterized in that: the sealing surface of becket 2 is identical with the area of mating surfaces, adds to leave sealing band (seeing accompanying drawing 3) man-hour.
In each chain link counterbore 4, an elastic caoutchouc circle 1 and a becket 2 only are housed.Becket bigger diameter end face is as sealing surface, and the outward flange of sealing surface is sealing band [(the outer dotted line of lubrication groove is a sealing band 27 to the airtight endless belt at edge in the accompanying drawing 3 (c), and accompanying drawing 3 (b) is the hermetically sealed band structure of unlubricated groove)].The external diameter of miner diameter end is installed the elastic caoutchouc circle, make becket become one with the big or small identical reliable sealing sealing member of mating surfaces.At this moment becket is again a seal ring, just has an endless belt to contact with extraneous on the outer round surface of contact surface.We are controlled at it in the minimum zone, have protected sealing surface not corroded by silt mutually, and this point is very important.Say that technically the wire airtight quality is higher than planar sealing under the identical situation of air-proof condition, we are anti-, and its road adopts planar sealing to increase difficulty to processing undoubtedly.Just because of this, this practice makes the hermetically-sealed construction of track link that variation take place.The multi-function action of becket is formed sealed liquid lubricator with the elastic caoutchouc circle with new seal form, makes the following small axle diameter seal lubrication of 190mm pitch crawler belt just be achieved.The face seal of becket and guide has overcome, has discharged prior art wire sealing and cause the guide sealing surface to be ground with the deficiency of groove easy oil leakage herein.Make sealing safer, more reliable.
The elastic caoutchouc snare is contained on the outside face of becket, one side contacts with a face at the becket sealing surface back side, and another side exceeds a becket non-tight face part, goes in the chain link counterbore with hand.After the assembling, the part that the elastic caoutchouc circle exceeds becket non-tight face is compressed, and equates to the height between a face with the non-tight face, and the passage that lubricating oil leaks has from here been blocked in compressed rubber ring and the sealing of chain link counterbore bottom surface.This moment, compressed rubber ring produced the compression energy, between chain link counterbore bottom surface, guide two ends and becket a face, compression can transform an elastic acting force and act on the becket, and becket is under the effect of elastic caoutchouc circle, and its sealing surface and guide sealing surface are close together and realize the failure-free sealing.This sealing lubrication oil seal the most at last realizes liquid lubrication at shaft room.
When bulldozer or excavating machine turnon left, be subjected to displacement with respect to bearing pin vertically by twist moment effect guide, chain link left side becket sealing surface and guide sealing surface gap are zero, the left side rubber ring is slightly strengthened by micro-elasticity of compression power.Produce a micro-space between right side becket sealing surface and guide sealing surface, be in quick condition, at this moment, the compression of elastic caoutchouc circle can obtain discharging moment, and bullet is to right side guide sealing surface vertically with becket, and eliminate in micro-space.The elastic force of elastic caoutchouc circle slightly reduces, but still in the actv. elastic range, at this moment between the right guide end face and chain link counterbore bottom surface, the thickness of removing becket is endplay.This gap can not exceed the elastic range of elastic caoutchouc circle, exceeds both leakage of oils.
Between advancing and under the turn condition, when bearing pressure, impulsive force, becket also to be subjected to the effect of moment of rotation.When track link turns to drive wheel or track adjusting wheel outside face during the starting stage by linear portion, remove the external force effect that is subjected to, simultaneously in the sealing that also must guarantee under the effect of elastic caoutchouc circle under the slew mode.And when can not be subjected to the moment of rotation effect and the elastic caoutchouc circle relatively rotate.The diameter of becket sealing surface, area are all greater than the non-tight face, and mill sassafras power is also greater than the non-tight face, and this influencing factor easily causes seal failure.This just requires the quiet sassafras resistance that rubs after becket and elastic caoutchouc circle, elastic caoutchouc circle and chain link counterbore bottom surface, side press-fit, greater than the frictional force of becket and the relative motion of guide sealing surface.Otherwise seal failure will relatively rotate.The lubricating effect of the interior lubricating oil of becket lubrication groove this moment has reduced frictional force, reaches a solution of a problem.
In addition, when bulldozer or excavating machine turnon left, chain link left side becket is subjected to the axial force from guide, becket non-tight face contacts with chain link counterbore bottom surface, becket non-tight face is easily followed the tolerance of chain link counterbore bottom surface and bearing pin line of centers squareness and is changed, and causes the seal failure of run-off the straight of becket sealing surface and guide sealing surface.Also have a kind of factor, the excessive clearance of bearing pin and guide can cause the becket sealing surface to follow the guide sealing surface radially wobbling, and the gap of bearing pin and guide should be controlled within the desirable scope.But radially wobbling between the two is that inevitably when certain reason becket run-off the straight, the diameter clearance of its endoporus and bearing pin should have a bevelled space, to avoid interference.The sealing of becket and guide sealing surface is the core of sealed liquid lubricator, and therefore, the squareness of counterbore bottom surface and bearing pin line of centers should be controlled between the 0-0.02mm when design, production, and the parts of seal lubrication type crawler belt are different from dry type.Again it, the diameter of becket sealing surface is greater than the diameter of non-tight face, the relative non-tight face of sealing surface is stable under external force.The sealing compensation effect of flexible rubber ring and chain link counterbore bottom surface, and problem is solved.The squareness of counterbore bottom surface and bearing pin line of centers can not tilt in dimension limit, can avoid the seal failure that causes from here.
Working accuracy, the roughness of bearing pin and chain-link pin internal surface of hole and press-fit the airtight quality that cooperates the intensity effect crawler belt; The planeness of becket two bottom surfaces, guide sealing surface and guide inner hole centreline squareness influence the airtight quality of crawler belt equally., reversed in the crawler belt life cycle and moment of rotation repeatedly under the alternating action, sealing arrangement of the present invention is realized dynamic seal (packing) like this, and this moment, becket played seal ring.
(3) described sealed liquid lubricator is characterized in that: the sealing surface of becket 2 and processing and lubrication groove (see accompanying drawing 3) identical with engagement surface area.
Wherein, Fig. 3 (a) is the front view of becket, and Fig. 3 (b), 3 (c), 3 (d), 3 (e), 3 (f), 3 (g) are six kinds of difform left views in surface, and 17 is the lubrication groove of becket.
When track link is in up and down linear portion, there is not relative motion between guide and the becket, when track link is in drive wheel and track adjusting wheel outside face, about about 35 °, less than 1/10th circles, the girth of crawler belt is generally between 8～10m greatly for two chain links corner to each other, crawler belt construction machinery and equipment to the 10km/h running velocity, guide is equivalent to 7r/min, even if with the running at high speed of 100km/h, guide also only is equivalent to 1.1r/s.
Becket is under the low-speed big mode of operation, and environmental conditions is extremely abominable, must carry out special selection, processing and processing to becket.We select alloy material for use, and superlinish is implemented on the sealing surface surface, and heat treatment hardness is between HRC65～75.This hardness is higher than the guide sealing surface that cooperates with it, exists difference of hardness to seal in order to break-in, and the becket external diameter is little, and linear velocity is also little, and it is overheated that heat conducting and radiating is good in addition, friction ring can cause.But be subjected to the effect of elastic caoutchouc circle and guide sealing surface to rub the trend of gapped increase for a long time.Can endplay be stablized, be the crawler belt important factor of sealing life lastingly, also is unique vicissitudinous unstable factor simultaneously, will cause leakage of oil when endplay increases to the elastic range that exceeds the elastic caoutchouc circle.We take becket identical with guide sealing surface area of contact, have overcome the thin and little deficiency that causes endplay to increase easy to wear of guide end face area of contact of existing thrust washer wall.
For further strengthening, stablize endplay, the sealing surface processing and lubrication groove 17 (seeing accompanying drawing 3c) of becket when design, production.When track link relatively rotated 35 ° of left and right sides to each other, the lubricating oil in the becket sealing surface lubrication groove, lubrication groove shape, width, angle, spacing guaranteed except that sealing band lubricated entirely with the sealing surface of guide.Because friction surface lubricated, keep having the oil film of certain minimum thickness, improved surperficial lubrication state, endplay stablized, lastingly, and abrasive dust can enter lubrication groove and seals in order to break-in simultaneously.Sealing surface obtains lubricating its rotary resistance is reduced, reduced the amplitude that the elastic caoutchouc circle is reversed, improved the strength at repeated alternation that the elastic caoutchouc circle is reversed, avoid becket and elastic caoutchouc circle to relatively rotate, eliminated the deficiency that the long-time relative motion endplay of becket sealing surface and guide sealing surface increases.Naturally prolong the sealing life of crawler belt, and this moment, becket worked to stablize endplay.
2, described sealed liquid lubricator is characterized in that: the lubricated crawler belt of pin diameter below φ 38mm, guide 6 bore areas have an oil storage chamber 13 (seeing accompanying drawing 1) at least.
Oil storage chamber is communicated with bearing pin center oilhole by through hole 12.The lubricated crawler belt of hydraulic seal is along with the pitch gets finer bearing pin attenuates, and its intensity is owing to be subjected to the constraint of friction stress, and the center oilhole will attenuate naturally, and the center oilhole attenuates, and the reserves of lubricating oil just tail off and are difficult to ensure.Therefore, remove the sub-fraction at guide 6 at least one position of bore area with the method for machine up.The store oil volume that reduces with compensation oilhole reduced.At this moment guide is thickeied in the middle of can adopting external diameter, and the both sides fitted position is constant, can guarantee the intensity of guide like this, can prolong the service life of guide again.
3, described sealed liquid lubricator is characterized in that: described rubber plug 3 adopts cone blind hole rubber plug (seeing accompanying drawing 1).
After the qualified every joint lubricating oil of sealing detection is filled with, with blind hole cone rubber plug encapsulation bearing pin center oilhole (seeing embodiment 1).The oilhole encapsulation of existing bearing pin center is formed (seeing accompanying drawing 7) by cone through hole rubber plug 25 and plastic plug 24, the existing plastic plug minimum diameter of being understood is 6.5mm, when bearing pin center oil bore dia during at 5mm, obviously, prior art can not encapsulate the lubricated crawler belt center of small axle diameter oilhole, so adopt blind hole cone rubber plug package center oilhole to reach a solution of a problem, also make the expansion of sealed liquid lubricator field of application and obtain technical support.Its another advantage is the simplified structure cost-cutting, is not influencing under the bearing pin intensity prerequisite as oilhole is meticulous, and suitably overstriking bearing pin oilhole port diameter forms stepped hole so that encapsulation.
4, described sealed liquid lubricator, it is characterized in that: the crawler belt connecting link adopts split type multiple tooth lengthening reference plane structure, axle head connecting link and cover end connecting link carry out combination on multiple tooth branch dignity, divide angle α≤25 ° of the line extended line of honorable ab or any point-to-point transmission of cd and connecting link two bottom surfaces; 6 to 8 length that can increase effective driving surface of the number of teeth, stressed evenly do not concentrate (seeing accompanying drawing 4).
Existing connecting link divides that the honorable number of teeth is few, the length of effective driving surface is short and stressed concentrating, the connecting link branch dignity that also has is the semicircle arcuation, all the faying face straight length is short, whether two connecting links divide dignity in a plane about be difficult to detecting, brought difficulty to assembling like this, the time-consuming centering that is difficult for.Again it, the guide pass of connecting link loses the assembling reference plane after next repair welds, once lose the assembling reference plane, two connecting link branch dignity are not in a plane about will causing during assembling, crawler belt connects the back set up stresses, and the loading that is hit in the serious short time will be broken.On-the-spot being difficult to keeped in repair, and this point is precedented.
So just required one not rely on guide pass, caterpillar block joint face, and can make the branch dignity of connecting link guarantee assembling reference plane in a plane quickly and easily.The line of ab point-to-point transmission and cd point-to-point transmission, in-lines all, and length is divided the straight length of dignity greater than existing connecting link, whether two connecting links divide dignity in a plane about during assembling, with measuring at once once dull and stereotyped cubing, on pressing machine, revise at any time, up in a plane, being press-fit into place again.At this moment, the line that ef is 2 is tending towards vertical two bottom surfaces as much as possible, reduces radial component and makes connection reliable lasting.
5, described sealed liquid lubricator is characterized in that: the lubricated crawler belt of double-pin axle then adopts bearing pin not have the center oilhole, and oil storage chamber is in caterpillar block.Caterpillar block bearing pin endoporus is communicated with oil storage chamber; Adopt the mode of cone, taper hole to be connected (seeing accompanying drawing 2) between the bearing pin of the lubricated crawler belt of double-pin axle and the connecting panel.
What the lubricated crawler belt of small axle diameter will solve is: two difficult problems of chain link counterbore and oil storage chamber.
The lubricated crawler belt oil storage chamber of above double-pin axle is located at and has solved a lubricated difficult problem of small axle diameter hydraulic seal in the caterpillar block.And the chain link counterbore is the basis that sealing member is installed, and we are placed on counterbore in the joint plate of bipyramid hole, has so just fundamentally solved last lubricated difficult problem of small axle diameter hydraulic seal.
The bridging work face of lubricated crawler belt bearing pin two ends of double-pin axle and connecting panel is processed into cone, taper hole respectively.Outer end at connecting panel taper hole major part is processed with counterbore, in order to sealing member is installed, the microcephaly also is processed with counterbore at the connecting panel taper hole, and so that the working space of locking fastening nut to be provided, crawler belt bearing pin two ends are processed with and tighten with locking fastening nut after screw thread is connected with connecting panel.To exceed bearing pin cone microcephaly 2mm at least after the baseplane assembling of connecting panel taper hole microcephaly counterbore.Make locking fastening nut tighten posterior pyramids and taper hole in conjunction with closely, is connected reliably.Adopt locking fastening nut to be convenient to fast assembling-disassembling, tighten that rear nut can not expose in case hard thing scratch.Caterpillar block bearing pin endoporus side seal face is lower than the thickness of a becket of caterpillar block end face, makes the impact of avoiding driven wheel after the sealing member assembling in the connecting panel.After design size will ask the locking fastening nut of assurance to tighten for timing, the endplay automatic compensation of bearing pin finished.In a caterpillar block, have two oil storage chambers at least.
6, described sealed liquid lubricator, it is characterized in that: the lubricated crawler belt of double containment roller type adopts bearing pin not have the center oilhole, way roller center of circle direction in the middle of the roller outer round surface both ends of the surface differs three through holes of 120 ° of processing, and these three through holes promptly are oil holes, also are oil storage chambers.And is communicated with oil storage chamber 35 by the through holes 34 in the guide 6, the port usefulness rubber plug 3 of three through holes 26 encapsulates, and sees accompanying drawing 5A-A cutaway view.
The extended line of three through holes not in-line only intersects in the center of circle, the stress concentration when having discharged a certain angle roller stress.The cylindrical of roller 20, bore area all are that linear portion does not have ladder to see accompanying drawing 5 (a).But on roller both ends of the surface and becket 2 contacted surfaces, a protruding step is decided on condition between 3～5mm.One can be hidden in sealing surface in the counterbore 4, has simultaneously guaranteed that again the roller both ends of the surface contacts with chain link 8 inside faces, equally, does not also contact between chain link 7 medial surfaces and chain link 8 lateral surfaces.
Between roller bore area and guide 6 outside faces, no retainer needle bearing 33 is housed, needle bearing both ends of the surface rounding, its length is a little less than the roller both ends of the surface, and diameter clearance rationally makes needle roller not twist at the roller bore area.With the contacted becket 2a of needle bearing both ends of the surface surface processing and lubrication groove not, in order to avoid lubrication groove and needle bearing end face interfere, becket 2a adopts on the surface hermetically sealed band mode to see accompanying drawing 3 (b), can limit needle roller and move vertically.
Groove of processing is installed needle roller 33a in the middle of the existing roller bore area, makes roller 20a bore area stepped, sees accompanying drawing 5 (b).Difficulty of processing is big, and needle bearing is installed equally, the former bore area straight line segment length, load-carrying capacity strong stability, and bore area does not have ladder, cutting output to save raw MAT'L less, processes easy production efficiency height.Replace grease lubrication with liquid lubrication, the former all obviously is better than the latter.
Rubber ring and becket sealing member are housed in the counterbore of chain link 8, realize the sealing of first road with roller both ends of the surface sealing surface respectively.Have a through hole 34 in guide 6 outside face middle parts, see accompanying drawing 5 (a).The oil storage chamber lubricating oil is arrived between guide inside face and bearing pin realize liquid lubrication.Recess 35 also is the part of oil storage chamber in the middle of the guide 6, and rubber ring and becket sealing member also are housed in the counterbore of chain link 7, realizes the sealing of second road with guide 6 both ends of the surface.Adopt liquid lubrication cold post-start resistance little, operate steadily, the strong noise of damping capaicty is little.It is big to have overcome existing grease aging running resistance, the time and the deficiency of catching phenomenon.
7, described sealed liquid lubricator is characterized in that: the mode of the lubricated chain strip adoption bearing pin center of two overcoats oilhole, and there is the space of a undergauge at bearing pin outside face middle part, and communicating with center oilhole in the bearing pin is oil storage chamber altogether.Medial surface or lateral surface weldering knot brace panel at chain link solve chain link counterbore problem, in order to sealing member (seeing accompanying drawing 6) is installed.
This kind chain is divided into two kinds:
Nose end is respectively processed 1 groove 37 in a type overcoat 21 both ends of the surface, and rubber seal is installed in groove, injects grease lubrication by fuel feeding valve between overcoat inside face and guide outside face.And also be provided with the grease lubrication safety valve at overcoat 21 outside faces.Adopt fluid tight manner lubricated between guide and bearing pin.
The b type is except that identical with a type, and inner link 8 can adopt the increase thickness of slab, or ties brace panel in the inside face weldering of inner link 8, solves chain link counterbore problem.Have a through hole 36 in guide 6 outside face middle parts in addition, oil storage chamber 31 lubricating oils are arrived between guide 6 outside faces and overcoat 21 bore areas realize liquid lubrication.
The center oilhole of above a, two kinds of chains of b adopts the stepped hole mode to encapsulate.
The invention has the beneficial effects as follows: the sealed liquid lubricator that is adopted, low cost of manufacture simple in structure, technology advanced person, thrust intensity are big, and running resistance is little, concentrates in the crawler belt cycle in service life: joint money, material-saving, energy-saving and environmental protection.Product maintenance is worth high, and main part need not be changed, be the responsibility row can not compare.This crawler belt service life is more than a times of dry grinding.But employings such as coal supply charcoal, water conservancy, electric power, agricultural, light industry, manufacture.Can be made into lubricated crawler belt for snow wagon, the operation of amph shallow sea.The lubricated crawler belt of double-pin axle can militarily be used for tank, and crawler type ordnance vehicle etc. (seeing accompanying drawing 2).More than as form industrialization and can save a large amount of steel, multi-field important practical value and application prospects arranged.
Within the scope of the invention, also can make the multiple technologies modification, such as hinge, becket adopts the sealing arrangement that pottery, composite material etc. are formed for another example, can be used for the rotary end surface sealing of various pumps under the little situation of axial force.
Description of drawings
Fig. 1 structural representation of the present invention.
The caterpillar belt structure scheme drawing is lubricated in the sealing of Fig. 2 double-pin.
Fig. 3 becket master, left view.
The split type crawler belt connecting link of Fig. 4 structural representation
Lubricated caterpillar belt structure scheme drawing of Fig. 5 double containment roller type and roller cutaway view.
The two overcoat seal lubrication chain structure scheme drawings of Fig. 6.
Fig. 7 has seal lubrication type caterpillar belt structure scheme drawing now.
The specific embodiment
With reference to accompanying drawing 1, seal lubrication crawler belt of the present invention is made up of elastic caoutchouc circle 1, becket 2 and cone blind hole rubber plug 3.Include chain link counterbore 4, bearing pin 5, guide 6, chain link 7,8,9,10, center oilhole 11, through hole 12, oil storage chamber 13.
Manually elastic caoutchouc circle 1 is sleeved on the outside face of becket 2, together is pressed in the chain link counterbore 4.The lateral surface of rubber ring and the counterbore medial surface of chain link 7,10 have a certain amount of interference fit at this moment, becket is suspended in center in the counterbore, at first one group (about each one) cover end connecting link 19 is seen accompanying drawing 4 and guide 6 assemblings, and cover end connecting link divides dignity (to assemble axle head connecting link 18 at last) in a plane about making.The chain link 7,10 that sealing member will be housed again is press-fit into place through 5 being connected of guide 6 of bearing pin with chain link 8,9, and elastic caoutchouc circle 1 is compressed and produces a resilient force on becket 2 at this moment, makes the sealing surface of becket 2 and the sealing surface of guide 6 realize positiver sealing.Under the powerful thrust bearing loading capabilities of becket 2 are supported, guaranteed chain link 7,8,9,10, between no longer rub.Afterwards, becket 2 in the interstice coverage of setting with external force and the effect of elastic caoutchouc circle axial float freely.Guide 6 is with respect to any axial motion of bearing pin 5, and the guide end face space that occurs, moment all will obtain the compensation of becket axial float and realize dynamic seal (packing).All these is to obtain under the effect of elastic caoutchouc circle 1.This just requires a technical index such as the elasticity of elastic caoutchouc circle 1, anti-permanent modification, antiageing, oil resistant, acid and alkali-resistance, and the life-span at least will be more than 5 years.Otherwise wherein a technical index goes wrong in advance, and then the sealing of seal lubrication crawler belt all will be lost efficacy.
The product that the crawler belt lubricating oil is then selected heavy duty, wear-resistant, good fluidity for use, do not lost efficacy under-45 ℃ of-90 ℃ of temperature detects and the oiling while carries out on specialized equipment.Be pumped into accurate vacuum state by bearing pin center oilhole and carry out sealing detection, any leakage must not be arranged, vacuum indicator numerical value in 30 seconds, must remain unchanged (otherwise do over again for sealing detection nonconformity discharge).Center oil nose end mouth is closed the switch towards vacuum pump straight up at this moment, opens the switch of lubricating oil, and (the oil storage container oil filling port communicates with atmosphere), lubricating oil is filled with center oilhole and oil storage chamber under action of pressure.Lubricating oil is crossed through hole 12 through the center of bearing pin 5 oilhole 11 and is entered shaft room.
Adopt the method encapsulation bearing pin center oilhole of air pressure balance, see the cone blind hole rubber plug 3 in the accompanying drawing 1.Soon a thin ventilation duct penetrates along the axis centre of cone blind hole rubber plug 3, the center oilhole 11 of the bearing pin 5 of packing into together again, and after rubber plug entered the center oilhole, the pressure in the oilhole of center raise, and this moment, gas or liquid were discharged with ventilation duct.Rubber plug is packed the degree of depth of center oilhole into till drawing requires.Compressed rubber plug and center oil hole wall are combined closely, and the aperture that rubber plug is pierced when transfering to ventilation duct restores to the original state rapidly, and the lubricating oil in the oilhole of center is isolated from the outside promptly to encapsulate and finishes.
Above embodiment is good through excavating machine 190mm pitch crawler belt assembling experiment effect, at present still in experiment.
Accompanying drawing 2 does not have bearing pin center oilhole seal lubrication crawler belt for the double-pin axle, is the another kind of type of seal lubrication crawler belt of the present invention.Form by elastic caoutchouc circle 1, becket 2 and cone blind hole rubber plug 3.Include bipyramid hole joint plate 14, crawler belt bearing pin 5, caterpillar block 16, locking fastening nut 15, oilhole 11a (in caterpillar block).
Equally, manually elastic caoutchouc circle 1 is sleeved on the outside face of becket 2, together be pressed in the counterbore of bipyramid hole connecting panel 14, crawler belt bearing pin 5 is packed in the pin-and-hole of caterpillar block 16, the bipyramid hole connecting panel 14 that will have sealing arrangement crawler belt bearing pin 5 two ends of packing into, again locking fastening nut 15 is screwed on the screw thread at crawler belt bearing pin 5 two ends, and the as prescribed moment of torsion tightens, make bipyramid hole connecting panel 14 and crawler belt bearing pin 5 mortise, becket 2 sealing surfaces and caterpillar block 16 pin-and-hole side seal faces are realized sealing simultaneously.After qualified after testing, lubricating oil is injected in the oilhole 11a of caterpillar block, with cone blind hole rubber plug 3 oilhole 11a is encapsulated again.This kind crawler belt adopts hydraulic seal to lubricate can reduce noise, and the present invention is fit to running at high speed of the lubricated crawler belt 100km/h of double-pin axle hydraulic seal.
Accompanying drawing 5 adopts bearing pin not have the center oilhole for the lubricated crawler belt of double containment roller type, and the mode of oil storage chamber in roller is another type of seal lubrication crawler belt of the present invention.Form by elastic caoutchouc circle 1,1a, becket 2,2a and cone blind hole rubber plug 3.Include roller 20, needle bearing 33, bearing pin 5, guide 6, oil storage chamber 26,35, through hole 34, chain link counterbore 4, inner link 8, outer link 7.
Contrasting accompanying drawing 5 in conjunction with the embodiments is described as follows: this kind double seal, and one is installed in inside, and one is installed in the outside, i.e. the double containment of being made up of single sealing arrangement of two same functions.Equaling has increased a roller at the outside face of accompanying drawing 1 guide 6, different is, accompanying drawing 1 BOGEY WHEEL rolls on crawler belt, the roller external diameter of roller type crawler belt then rolls on static relatively guide rail greater than the chain link height, on the bent plate plane of inner link 8 vertical inner links, hole, so that caterpillar block or body feed tank etc. to be installed.
The chain link of roller type crawler belt is to adopt the punch forming of thin plate mould.For economical with materials, also to guarantee the assembling intensity of bearing pin 5 and outer link 7 mating surfacess simultaneously, two outer faces at outer link 7 respectively weld a brace panel, medial surface at outer link 7 is processed counterbore around axle center processing counterbore, inner link 8 employing thickening plates around the center, hole, in order to sealing member (also can tie brace panel in the medial surface weldering of inner link 8) is installed if needed.
Equally manually with elastic caoutchouc circle 1,1a, becket 2,2a are pressed into respectively in the counterbore of chain link 7,8.Again no retainer needle bearing 33 is filled roller 20 bore areas, guide 6 reinstalls the endoporus that roller 20 has been filled needle bearing, roller 20 both ends of the surface do not add any pad, at this moment, guide 6 two ends and chain link 8 press-fit, and endplay guarantees that by frock roller both ends of the surface sealing surface contacts with the radially outward edge sealing surface of becket 2a and realizes sealing, this moment, the radially inward edge sealing surface of becket provided constraints, and prevented that needle bearing from moving axially.The sealing surface of becket 2a is the processing and lubrication groove not, and needle bearing axially is being limited between two beckets, radially is limited between the inside face of guide 6 outside faces and roller 20.Bearing pin 5 is reinstalled in the guide 6, and bearing pin 5 press-fits with chain link 7, and inner link 8 and guide 6, outer link 7 and bearing pin 5 be assembled in pairs all at every turn.It is to be noted that the lubricated crawler belt of above double containment guarantees all when designing that crawler belt assembling back chain internode does not disturb mutually, does the time spent when crawler belt is subjected to twist moment, becket plays the thrust pad circle.Avoided the inside face mutual friction mutually of roller both ends of the surface and the outside face and the chain link 7 of chain link 8 inside faces, chain link 8 in the prior art, the deficiency that causes chain link to break after impaired.Oiling, encapsulation are identical with embodiment 1.
Accompanying drawing 6 is two overcoat seal lubrication chains, adopts the mode of bearing pin center oilhole, and there is the space of a undergauge at bearing pin outside face middle part, and communicating with center oilhole in the bearing pin is oil storage chamber altogether.Be another type of sealed liquid lubricator of the present invention, form by elastic caoutchouc circle 1,1b, becket 2,2b and cone blind hole rubber plug 3.Include bearing pin 5, guide 6, chain link counterbore 4, inner link 8, outer link 7, overcoat 21, grease fuel feeding valve 29, safety valve 30, groove 37, rubber seal 28, oil storage chamber 31, bearing pin through hole 32, guide through hole 36 (seeing accompanying drawing 6).
The two overcoat seal lubrication chains of this kind, the overcoat diameter is a kind of messenger chain of widespread use less than the chain link height.Below no longer repeat with embodiment 3 same sections.
Grease fuel feeding valve 29, safety valve 30 are respectively charged in overcoat 21 valve openings, rubber seal 28 is packed in overcoat 21 grooves 37, guide 6 is packed in overcoat 21 holes, and this moment, rubber seal all exceeded overcoat 21 a both ends of the surface surface part, and guide 6 two ends and inner link 8 press-fit.After the assembling, rubber seal is compressed, and with the sealing of inner link 8 medial surfaces and guide 6 outside faces, in elastic caoutchouc circle 28 is hidden in, can prevent that hard thing stabs, and with the sealing of inner link 8 medial surfaces, but dust protection enters with grease and leaks.
It is to be noted, the contact surface roughness of inner link 8 and rubber seal 28 directly influences the service life of chain, palpus finishing and fine limit work, bearing pin 5 guide 6 endoporus of packing into, press-fit with the outer link 7 that sealing member is housed, but can't overcome mutual wearing and tearing between inner link 8 and the overcoat 21, at last a deficiency.And adopt hybrid seal lubrication also not lose is a good method.So this kind chain only is fit to use under the little condition of twist moment, as adopt accompanying drawing 6 (b) type under the big situation of strong dirt moment of torsion, this type is the another kind of type of same model.
Claims (11)
1, sealed liquid lubricator, sealing member is made up of elastic caoutchouc circle (1), becket (2), rubber plug (3), include track link counterbore (4), bearing pin (5), guide (6), chain link (7), (8), (9), (10), it is characterized in that: in each chain link counterbore (4), an elastic caoutchouc circle (1) and a becket (2) only are housed.
2, sealed liquid lubricator according to claim 1 is characterized in that: the outside face of described becket (2) is stepped, and sealing surface is identical with engagement surface area.
3, the described sealed liquid lubricator of root a tree name claim 1 is characterized in that: becket (2) and guide (6) be contacted to be positioned on the sealing surface of becket (2) and to be processed with lubrication groove (17), leaves sealing band (27).
4, sealed liquid lubricator according to claim 1, it is characterized in that: the seal lubrication type crawler belt of bearing pin Φ below 38 millimeters, at least have an oil storage chamber (13) in guide (6) bore wall, and be communicated with oilhole (11) by bearing pin through hole (12).
5, the described sealed liquid lubricator of root a tree name claim 1 is characterized in that: described rubber plug (3) adopts cone blind hole rubber plug.
6, sealed liquid lubricator according to claim 1, it is characterized in that: the crawler belt connecting link adopts split type multiple tooth lengthening reference plane structure, axle head connecting link (18) and cover end connecting link (19) carry out combination on multiple tooth branch dignity, divide angle a≤25 ° of the line extended line of honorable ab or any point-to-point transmission of cd and connecting link two bottom surfaces; 6 to 8 of the numbers of teeth.
7, sealed liquid lubricator according to claim 1 is characterized in that: the lubricated crawler belt of double-pin axle adopts bearing pin not have the center oilhole, and oil storage chamber (11) is in caterpillar block (16), and caterpillar block bearing pin endoporus is communicated with oil storage chamber (11).
8, root a tree name claim 1 or 7 described sealed liquid lubricators is characterized in that: adopt the mode of cone, taper hole to be connected between the bearing pin (5) of the lubricated crawler belt of double-pin axle and the connecting panel (14).
9, sealed liquid lubricator according to claim 1, it is characterized in that: the lubricated crawler belt of double containment roller type adopts bearing pin not have the center oilhole, way roller center of circle direction differs three through holes of 120 ° of processing in the middle of roller (20) outer round surface both ends of the surface, these three through holes are oil hole (26), it also is oil storage chamber, and the through hole (34) that passes through in the guide (6) is communicated with rubber plug (3) encapsulation of the port of its three through holes (26) with oil storage chamber (35).
10, sealed liquid lubricator according to claim 1, it is characterized in that: the mode of lubricated chain strip adoption bearing pin (5) center of two overcoats oilhole, there is the space (31) of a undergauge at bearing pin (5) outside face middle part, and communicating by the interior center oilhole of bearing pin through hole (32) and bearing pin (5) is oil storage chamber altogether; Inside face or outside face weldering at chain link have brace panel.
11, sealed liquid lubricator according to claim 1, it is characterized in that: nose end in overcoat (21) both ends of the surface, each processes 1 groove (37), rubber seal (28) is installed in groove (37), by fuel feeding valve (29), inject grease lubrication between overcoat (21) inside face and guide (6) outside face; And also be provided with grease safety valve (30) at overcoat (21) outside face, then adopt fluid tight manner lubricated between guide (6) and the bearing pin (5).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100106650A CN100469643C (en) | 2007-03-21 | 2007-03-21 | Sealed liquid lubricator |
| PCT/CN2008/000564 WO2008113264A1 (en) | 2007-03-21 | 2008-03-21 | Sealing device and crawler with said sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100106650A CN100469643C (en) | 2007-03-21 | 2007-03-21 | Sealed liquid lubricator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101020475A true CN101020475A (en) | 2007-08-22 |
| CN100469643C CN100469643C (en) | 2009-03-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100106650A Expired - Fee Related CN100469643C (en) | 2007-03-21 | 2007-03-21 | Sealed liquid lubricator |
Country Status (1)
| Country | Link |
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| CN (1) | CN100469643C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008113264A1 (en) * | 2007-03-21 | 2008-09-25 | Mingguo Dong | Sealing device and crawler with said sealing device |
| CN105473430A (en) * | 2013-08-29 | 2016-04-06 | 卡特彼勒公司 | Track joint assemblies |
| CN108222112A (en) * | 2016-12-22 | 2018-06-29 | 哈尼斯菲格技术公司 | Balancing device with lubricant |
| CN108860347A (en) * | 2018-08-13 | 2018-11-23 | 湖南千智机器人科技发展有限公司 | A kind of entire track structure and crawler travel equipment |
| CN109252508A (en) * | 2017-07-13 | 2019-01-22 | 上海广大基础工程有限公司 | A kind of saw chain formula slotter driving chain |
| CN109415098A (en) * | 2016-07-07 | 2019-03-01 | 卡特彼勒公司 | Chuck assembly with the flexible thrust ring assemblies for caterpillar chain |
| CN109576444A (en) * | 2018-11-19 | 2019-04-05 | 安徽东升精密铸钢件有限公司 | A kind of crawler dozer guide and its production and processing method |
| CN111085395A (en) * | 2019-12-30 | 2020-05-01 | 中国南方电网有限责任公司超高压输电公司天生桥局 | Device is paintd to conductive paste |
| CN115180035A (en) * | 2022-07-29 | 2022-10-14 | 索特传动设备有限公司 | Lubricated track caterpillar track of a tractor subassembly, track and engineering machine tool |
-
2007
- 2007-03-21 CN CNB2007100106650A patent/CN100469643C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008113264A1 (en) * | 2007-03-21 | 2008-09-25 | Mingguo Dong | Sealing device and crawler with said sealing device |
| CN105473430A (en) * | 2013-08-29 | 2016-04-06 | 卡特彼勒公司 | Track joint assemblies |
| CN109415098A (en) * | 2016-07-07 | 2019-03-01 | 卡特彼勒公司 | Chuck assembly with the flexible thrust ring assemblies for caterpillar chain |
| CN108222112A (en) * | 2016-12-22 | 2018-06-29 | 哈尼斯菲格技术公司 | Balancing device with lubricant |
| CN108222112B (en) * | 2016-12-22 | 2022-04-29 | 久益环球地表采矿公司 | Balancing device with lubricant |
| CN109252508A (en) * | 2017-07-13 | 2019-01-22 | 上海广大基础工程有限公司 | A kind of saw chain formula slotter driving chain |
| CN108860347A (en) * | 2018-08-13 | 2018-11-23 | 湖南千智机器人科技发展有限公司 | A kind of entire track structure and crawler travel equipment |
| CN109576444A (en) * | 2018-11-19 | 2019-04-05 | 安徽东升精密铸钢件有限公司 | A kind of crawler dozer guide and its production and processing method |
| CN111085395A (en) * | 2019-12-30 | 2020-05-01 | 中国南方电网有限责任公司超高压输电公司天生桥局 | Device is paintd to conductive paste |
| CN111085395B (en) * | 2019-12-30 | 2021-01-15 | 中国南方电网有限责任公司超高压输电公司天生桥局 | Device is paintd to conductive paste |
| CN115180035A (en) * | 2022-07-29 | 2022-10-14 | 索特传动设备有限公司 | Lubricated track caterpillar track of a tractor subassembly, track and engineering machine tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100469643C (en) | 2009-03-18 |
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