CN105083403A - Roller wheel for caterpillar type driving vehicle - Google Patents
Roller wheel for caterpillar type driving vehicle Download PDFInfo
- Publication number
- CN105083403A CN105083403A CN201510217633.2A CN201510217633A CN105083403A CN 105083403 A CN105083403 A CN 105083403A CN 201510217633 A CN201510217633 A CN 201510217633A CN 105083403 A CN105083403 A CN 105083403A
- Authority
- CN
- China
- Prior art keywords
- wheel body
- roller
- wheel shaft
- internal diameter
- caterpillar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Rolls And Other Rotary Bodies (AREA)
- Mechanical Sealing (AREA)
Abstract
The invention provides a roller wheel for a caterpillar type driving vehicle. The roller wheel has a simplified structure and is easy to maintain and inspect. The roller wheel is configured such that: the roller wheel is provided with a wheel body (52) which has an entrance side which is inserted with an axle (53) which has a middle large-diameter part (65). The entrance side is provided with an inner diameter which can be inserted to the middle large-diameter part (65). The wheel body (52) is also provided with an exit side which enables a top end side of the axle (53) which is inserted therein to protrude. The exit side is provided with an inner diameter which is smaller than an outer diameter of the middle large-diameter part (65). On the exit side, the external circumference of an O-shaped ring (71) of a floating oil seal (61) abuts against the wheel body (52). At the entrance side, the external circumference of the O-shaped ring (71) of the floating oil seal (61) abuts against an internal barrel (58).
Description
Technical field
The present invention relates to a kind of roller being located at the caterpillars such as bulldozer.
Background technology
Even if the caterpillars such as bulldozer in order on abrupt slope, the road surface of condition of road surface difference, unfairness ground also guarantees that the contact surface between ground makes car body stably travel, therefore using as about the crawler type running device of crawler type lower traveling body is located at the bottom of vehicle body frame (track frame) respectively.As main composed component, crawler type running device has guide wheel (flower wheel idle pulley), drive wheel (sprocket gear), crawler belt, multiple roller respectively.Guide wheel is configured at a place of the front and back position of side frame, and this side frame is positioned at the bottom about vehicle body frame, and drive wheel is configured at another place of the front and back position of side frame, and this side frame is positioned at the bottom about vehicle body frame.Crawler belt is formed by many pieces of steel plates etc. are connected into endless belt-shaped (ring-type), and in the mode of surrounding guide wheel and drive wheel around hanging on guide wheel and drive wheel.
Roller comprises: the roller (upper roller crawler belt holder sprocket wheel) on top, arranges one or more between its upside at side frame and crawler belt; And the roller of bottom (bottom roller track roller), arrange multiple between its downside at side frame and crawler belt.Crawler type running device is configured to rotate by making crawler belt circumference thus to travel on the fore-and-aft direction of crawler type running device.The roller on top is supported by vehicle body frame together with the roller of bottom, and is configured at ungrounded side of crawler belt, is conducive to the stable traveling of caterpillar.
In the past, as the roller of caterpillar, be known to as bottom roller: the two ends such as seal support portion sheet (inner core) being assemblied in wheel body, and many bolts are connected to multiplely are located at the tapped bore at the two ends of wheel body and the tapped bore of multiple seal support portion sheet corresponding with tapped bore thus carry out fastening structure, also propose there is the seal support portion sheet not using the two ends being assemblied in wheel body, bolt, tapped bore and the easy-to-assemble structure of appearance engaged by punching press, in addition, also propose have suppression to produce the structure of the problem of wheel body and wheel shaft localized contact (such as because punching press engages, with reference to patent documentation 1, patent documentation 2).
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2004-149111 publication
Patent documentation 2: Japanese Unexamined Patent Publication 2010-269697 publication (Fig. 1)
Summary of the invention
the problem that invention will solve
Friction by utilizing circumference to rotate between the crawler belt of movement of the roller of caterpillar and rotating.Due to the wheel treads uninterrupted contact of crawler belt and roller, therefore the parts of roller can produce wearing and tearing together with crawler belt, need to change these parts or repair.If suitably the parts of pair roller are not implemented to change, repair, then likely obstacle is caused to stable traveling.Thus, maintenance inspection is very important for roller.Therefore, expect that roller is the structure of maintenance inspection easy to implement.
Structural rate wheel body being carried out the roller in the past of punching press joint utilizes the structure economy of bolted and simple.But, as shown in Fig. 1 of the longitudinal section of the roller as caterpillar in the past, in the structure of roller in the past of carrying out punching press joint, be not that the prior wheel body 26 by the wheel body 16 on right side and left side forms integration by welding etc. in advance, but use coupling collar 14 carry out punching press joint when final assembling.Even if it must be subject to when the actual use of roller impacting also can not relaxing completely that punching press engages, thus, described structure is utilized to make joint reliable by strengthening the engaging force of punching press generation.But the negative effect of described structure there is the problem that the maintenance inspection time-division separates difficulty.
If consider maintenance inspection and weaken this engaging force, then exist in real work because impact etc. makes wheel body 16 offset with wheel body 26 hidden danger be separated a little.If wheel body 16 and wheel body 26 offset, then make the gap turn narrow of float grease seal 22, occur causing the overall damaged danger of roller because excessive heating causes leakage of oil.
In the roller in the past that wheel body punching press is engaged, impulsive force when even if punching press engaging force uses slightly lower than reality, also the size of the longitudinally of wheel body body can be made to become large, and the gap of float grease seal (gap between end cap top and wheel body) is diminished, the problem that the life-span of generation shortening roller entirety is so thus.If therefore the engaging force of punching press is set in safer level higher, then produces and damage the such problem of maintenance inspection.
Namely the present invention completes in order to the problem of degree of difficulty when solving maintenance inspection as described above, and the 1st object is, obtains a kind of structure that realizes and simplifies, and can the roller of the easy caterpillar of maintenance inspection.
for the scheme of dealing with problems
1st scheme of the present invention provides a kind of roller of caterpillar, and this roller is supported by the vehicle body frame of caterpillar and is configured at ungrounded side of crawler belt, and it is characterized in that, this roller comprises:
Wheel shaft, it has at middle body the path portion broad in the middle that diameter is greater than the diameter of end;
Wheel body, it is integrated by left and right two parts, to be coated at described wheel shaft and with the state that can rotate by described axle bearing, the entrance side that the described wheel shaft of confession of this wheel body inserts has the internal diameter that can insert described path portion broad in the middle, and the outlet side supplying the tip side of the described wheel shaft inserted to give prominence to of this wheel body has the internal diameter of the external diameter being less than described path portion broad in the middle;
Radial axle sleeve, it be cylindrical shape, and to be sheathed between the outer peripheral face of described path portion broad in the middle and the inner peripheral surface of described wheel body and described wheel body is rotated relative to described wheel shaft;
Containment member, it is coated at the end of described wheel shaft respectively;
End cap, its end overcoat from described wheel shaft and for keeping described containment member; And
Inner core, its entrance side overcoat from described wheel body and described wheel shaft is held in described wheel body;
On described wheel body, described in described outlet side, the outer peripheral face of containment member and described wheel body abut against, and described in described entrance side, the outer peripheral face of containment member and described inner core abut against.
According to the present embodiment, do not need punching press joint ring, and make the decomposition transfiguration of roller easy at the inner core of one-sided insertion.Thus, according to the roller of the caterpillar of the 1st scheme of the present invention, structure can be realized and simplify, and can easily maintenance inspection.
The roller of the caterpillar of above-mentioned the 1st scheme of the present invention also can be configured to, the internal diameter of the left and right sides part of described wheel body is different, the internal diameter of described outlet side is less than the internal diameter of described entrance side, and the radial axle sleeve of the minor diameter that described radial axle sleeve is mated by the internal diameter of the outlet side with described wheel body and the large diameter radial axle sleeve mated with the internal diameter of the entrance side of described wheel body are formed.When assembling roller, the wheel body inner-diameter portion whose of the part that the radial axle cover that the radial axle sleeve first inserted can not damage rear insertion inserts just can easily be passed through, therefore, except there is the effect of the roller of the caterpillar of above-mentioned the 1st scheme of the present invention, become assembling can be made and be easy to also improve assembling quality simultaneously.
The roller of the caterpillar of above-mentioned the 1st scheme of the present invention can also be configured to, described end cap has in the local of periphery the protrusion that one or more has tapped bore, and described tapped bore is positioned at when being screwed into screw and makes described screw be connected to the position of the side of described wheel body.Because end cap can easily decompose, therefore there is the effect of the roller of the caterpillar of above-mentioned the 1st scheme of the present invention, and the effect easily can decomposing roller when maintenance inspection is higher.
The roller of the caterpillar of above-mentioned the 1st scheme of the present invention can also be configured to; there is the back-up ring for described inner core being fixed on described wheel body; region between the described end cap and described back-up ring of the entrance side position at described wheel body is provided with protection ring, is sealed with antirust composition between described back-up ring and described protection ring.Due to can back-up ring be protected; therefore except there is the effect of the roller of the caterpillar of above-mentioned the 1st scheme of the present invention; also there is the effect that can reliably keep inner core such, and the effect easily can decomposing roller when maintenance inspection is higher.
the effect of invention
According to the roller of caterpillar of the present invention, structure can be realized and simplify, and can easily maintenance inspection.
Accompanying drawing explanation
Fig. 1 is the longitudinal section of the roller of caterpillar in the past.
Fig. 2 is the generalized section of the roller of the caterpillar of embodiments of the invention 1.
Fig. 3 is the partial enlarged drawing of the roller of the caterpillar of embodiments of the invention 1.
Fig. 4 is the generalized section of the roller (before wheel shaft insertion) of the caterpillar of embodiments of the invention 2.
Fig. 5 (a) and Fig. 5 (b) is the partial enlarged drawing of the roller of the caterpillar of embodiments of the invention 3; Fig. 5 (a) is cross-sectional schematic, and Fig. 5 (b) is schematic side view.
description of reference numerals
51, roller; 52, wheel body; 53, wheel shaft; 54, radial axle sleeve A; 55, radial axle sleeve B; 56, axial axle sleeve A; 57, axial axle sleeve B; 58, inner core; 61, float grease seal A; 62, float grease seal B; 63, end cap A; 64, end cap B; 65, path portion broad in the middle; 66, O type circle A; 67, O type circle B; 68, store oil portion; 69, O type circle C; 70, O type circle D; 71, O type circle E; 72, O type circle F; 73, O type circle G; 74, sealing member H; 75, sealing member I; 76, sealing member J; 77, sealing member K; 78, back-up ring; 161, back up ring; 162, end cap C; 163, screw hole; 172, sealing surface is contacted; 173, dip plane A; 174, dip plane B.
Detailed description of the invention
Below, for the present invention, suitably with reference to accompanying drawing use embodiment to being preferred embodiment specifically described, but the present invention is not limited to these embodiments.
{ the roller of caterpillar: embodiment 1}
The structure of accompanying drawing to the roller of the caterpillar of embodiments of the invention 1 is used to be described.The roller of the present embodiment can be used as and such as uses for the roller of the crawler type running device of the field machine such as construction machinery and equipment, rice harvester, the forestry machineries etc. such as bulldozer.As the caterpillar of roller possessing the present embodiment, except comprising roller, usually also comprise guide wheel, drive wheel, crawler belt, and crawler belt is installed around around guide wheel, roller and drive wheel.The roller of the present embodiment is supported by the vehicle body frame of caterpillar and is configured at ungrounded side of crawler belt, and it is characterized in that, this roller uses as bottom roller, and by bolt, the two ends of wheel shaft is connected to vehicle body frame to use.
(structure)
Fig. 2 is the generalized section of the roller of the caterpillar of embodiments of the invention 1.The roller 51 of the caterpillar of embodiments of the invention 1 has: (1) wheel shaft 53, and it has at middle body the path portion broad in the middle 65 that diameter is greater than the diameter of end; (2) wheel body 52, it is integrated by left and right two parts, and be coated at wheel shaft 53 and supported by wheel shaft 53 with the state that can rotate, the entrance side inserted for wheel shaft 53 of this wheel body 52 has the internal diameter that path portion 65 broad in the middle can be inserted, and the outlet side that the tip side of the wheel shaft 53 that the confession of this wheel body 52 is inserted is given prominence to has the internal diameter of the external diameter being less than path portion 65 broad in the middle; (3) cylindric radial axle sleeve A54 and cylindric radial axle sleeve B55, it to be sheathed between the outer peripheral face of path portion 65 broad in the middle and the inner peripheral surface of wheel body 52 and wheel body 52 can be rotated relative to wheel shaft 53; (4) float grease seal A61 and float grease seal B62, it is containment member, is coated at the end of wheel shaft 53 respectively; (5) also have end cap A63 and end cap B64, end cap A63 from the end overcoat of wheel shaft 53, for keeping float grease seal A61, end cap B64 in the same manner as end cap A63 from the end overcoat of wheel shaft 53, for keeping float grease seal B62; And (6) inner core 58, its entrance side overcoat from wheel body 52 and wheel shaft 53 is held in wheel body 52.
In addition, the axial axle sleeve A56 of the dull and stereotyped ring-type in the hole passed through as the end had in central authorities for wheel shaft 53 and axial axle sleeve B57 respectively with the both ends of the surface moving contact of path portion 65 broad in the middle.Inner core 58 is coated at wheel shaft 53 in the mode be clipped between axial axle sleeve B57 and float grease seal B62, and is fixed by back-up ring 78.That is, to be enclosed within the tip side of the end of wheel shaft 53 outside the order of axial axle sleeve, containment member, end cap, to be enclosed within the root side of the end of wheel shaft 53 outside the order of axial axle sleeve, inner core, containment member and back-up ring, end cap.Inner core 58 is fixed on wheel body 52 by back-up ring 78.
Wheel body 52 is the rotor of hollow.In the roller 51 of the caterpillar of embodiment 1, be configured in wheel body 52, at the outlet side that the tip side for the wheel shaft 53 inserted is outstanding, outer peripheral face and the wheel body 52 of the O type circle E71 of float grease seal A61 abut against, at the entrance side inserted for wheel shaft 53, outer peripheral face and the inner core 58 of the O type circle F72 of float grease seal B62 abut against.
Be configured in the effect that radial axle sleeve A54 between the outer peripheral face of path portion 65 broad in the middle and the inner peripheral surface of wheel body 52 and radial axle sleeve B55 plays bearing sub-assembly.In addition, the axial axle sleeve A56 end of wheel shaft 53 being passed in central authorities and axial axle sleeve B57 also plays the effect of bearing sub-assembly.
Wheel shaft 53 has: path portion 65 broad in the middle, and it is for supporting the radial load of radial axle sleeve A54 and radial axle sleeve B55; And end, its left and right at path portion 65 broad in the middle is used for the axial load of bolster to axle sleeve A56 and axial axle sleeve B57.Wheel shaft 53 is hollow and is provided with oil groove at flanking central by Milling Process.
Float grease seal A61 and float grease seal B62 is containment member and plays the effect of sealing element.Float grease seal A61, float grease seal B62 have O type circle E71, O type circle F72 respectively as the ring and elastic load ring elastic force being put on containment member.In the present embodiment, resinous O type circle all plays the effect as elastic load ring.Be provided with recess at the inner peripheral surface of wheel body 52, the space between this recess and wheel shaft 53 is as the store oil portion 68 for lubrication oil.Lubricating oil is supplied to bearing surface and forms oil film from store oil portion 68.Lubricating oil likely externally leaks along with the rotation of roller 51, in order to Leakage prevention, is provided with containment member and float grease seal A61 and float grease seal B62 between wheel body 52 and wheel shaft 53.
(assembling)
Wheel body 52 passes through right side half wheel body in welding Fig. 2 and namely supplies left side half wheel body in half wheel body of wheel shaft 53 inserting side and Fig. 2 namely to supply the tip side of the wheel shaft 53 inserted give prominence to half wheel body of side and synthesize one.In the present embodiment, internal diameter for half wheel body of wheel shaft 53 inserting side is the internal diameter that path portion 65 broad in the middle can be inserted, give prominence in half wheel body of side in the tip side for the wheel shaft 53 inserted, identical with the internal diameter of right side half wheel body with the internal diameter of right side half wheel body connection side, for the internal diameter that path portion 65 broad in the middle can be inserted, the internal diameter of the end side be not connected with right side half wheel body is less than the external diameter of path portion 65 broad in the middle, and, for being greater than the internal diameter of the external diameter of the end of wheel shaft 53, therefore there is ladder at inwall.
In wheel body 52, load axial axle sleeve A56 from right side half wheel body (for wheel shaft 53 inserting side) that internal diameter is larger in advance, be then directly pressed into the order of radial axle sleeve A54, radial axle sleeve B55.External diameter as the axial axle sleeve A56 of dull and stereotyped ring-type is roughly the same with the external diameter of path portion 65 broad in the middle, and be the external diameter that can insert from right side half wheel body that the internal diameter of wheel body 52 is larger, and be greater than the internal diameter of end of half wheel body on the left of wheel body 52, therefore, the stepped portion that the internal diameter that axial axle sleeve A56 is encased in the end of half wheel body on the left of wheel body 52 diminishes.
Under the state that axial axle sleeve A56, radial axle sleeve A54, radial axle sleeve B55 load in wheel body 52, wheel shaft 53 is inserted wheel body 52.The internal diameter of axial axle sleeve A56 is more than the external diameter of the end of wheel shaft 53, and thus, the top of the end of the wheel shaft 53 inserted, by the medium pore of the ring of axial axle sleeve A56, becomes from the outstanding state of the outlet side of wheel body 52.The end face of the tip side of path portion 65 broad in the middle and the axial axle sleeve A56 moving contact of dull and stereotyped ring-type.
To insert after wheel shaft 53, be inserted in wheel body 52 in the end of the root side of inserted wheel shaft 53 with the assembled in sequence of axial axle sleeve B57, inner core 58.Inner core 58 is press-ins.Axial axle sleeve B57 is dull and stereotyped ring-type, the external diameter of this axial axle sleeve B57 is roughly the same with the external diameter of path portion 65 broad in the middle, and be the external diameter that can insert from the side that the internal diameter of wheel body 52 is larger, internal diameter is more than the external diameter of the end of wheel shaft 53, thus, axial axle sleeve B57 is inserted into the end face moving contact of the end of path portion 65 broad in the middle the root side with path portion 65 broad in the middle.The external diameter of inner core 58 is the external diameter that can insert from the side that the internal diameter of wheel body 52 is larger and internal diameter is greater than the external diameter of the end of wheel shaft 53, thus, the one side moving contact of inner core 58 and axial axle sleeve B57, this face is the face of the opposite side in the face that axial axle sleeve B57 contacts with the end face of the root side of path portion 65 broad in the middle.The periphery of inner core 58 contacts with the inner circumferential of wheel body 52, and, being formed with the groove for assembling O type circle in the periphery of inner core 58, under the state that this groove is assembled with resinous O type circle C69, inner core 58 being inserted in wheel body 52.Thus, inner core 58 and wheel body 52 are close to, and can prevent from relaxing, in addition, prevent the oil in store oil portion 68 from the clearance leakage between wheel body 52 and inner core 58.In addition, prevent mud and other foreign matter from entering store oil portion 68 from the gap between wheel body 52 and inner core 58.
After being assembled with inner core 58, from the entrance side inserted for wheel shaft 53 of wheel body 52, inner core 58 is held in desired location in wheel body 52 by back-up ring 78 plugging in fitting that lacks a part of C-shaped in the circumferential.Wheel body 52 is provided with the groove of assembling back-up ring 78 in advance.
And then, the both ends of wheel shaft 53 will be coated at as the float grease seal of containment member.At the outlet side that the tip side for the wheel shaft 53 inserted is outstanding, float grease seal A61 is assemblied in the end of wheel shaft 53, at the entrance side inserted for wheel shaft 53, float grease seal B62 is assemblied in the end of wheel shaft 53.Float grease seal A61 is made up of such as lower component: metal sealing member H74, and it in the form of a ring, and has the internal diameter of the end being assemblied in wheel shaft 53; Metal sealing member I75, it in the form of a ring, and is for the sealing member with seal ring H74 moving contact and has the internal diameter of the end being assemblied in wheel shaft 53; Resinous O type circle D70, it is assemblied in the periphery of sealing member H74; And resinous O type circle E71, it is assemblied in the periphery of sealing member I75.Float grease seal B62 is made up of such as lower component: metal sealing member K77, and it in the form of a ring, and has the internal diameter of the end being assemblied in wheel shaft 53; Metal sealing member J76, it in the form of a ring, and is for the sealing member with sealing member K77 moving contact and has the internal diameter of the end being assemblied in wheel shaft 53; Resinous O type circle G73, it is assemblied in the periphery of sealing member K77; And resinous O type circle F72, it is assemblied in the periphery of sealing member J76.
Sealing member H74, sealing member I75, sealing member J76, sealing member K77 are structure similar each other.The inner peripheral surface of the end of the outlet side that the tip side of the wheel shaft 53 that the outer peripheral face of O type circle E71 and the confession of wheel body 52 are inserted is given prominence to abuts against.Thus, O type circle E71 and wheel body 52 are close to.
The outer peripheral face of O type circle F72 and the inner peripheral surface of inner core 58 abut against.Thus, O type circle E71 and inner core 58 are close to, and prevent the oil in store oil portion 68 from the clearance leakage between wheel body 52 and wheel shaft 53.In addition, prevent mud and other foreign matter from entering store oil portion 68 from the gap between wheel body 52 and wheel shaft 53.
End cap is held in desired location by the both ends of the wheel shaft 53 of the float grease seal in overcoat of the end cap gland in central authorities with the lid in the hole can inserted for wheel shaft 53.At the outlet side that the tip side for the wheel shaft 53 inserted is outstanding, end cap A63 being assemblied in the end of wheel shaft 53, inserting the entrance side of wheel shaft 53, end cap B64 being assemblied in the end of wheel shaft 53.
The inner side of the outer peripheral face of O type circle D70 and the lid part of end cap A63 that are clipped in the float grease seal A61 between end cap A63 and wheel shaft 53 abuts against.In addition, the inner side of the outer peripheral face of O type circle G73 and the lid part of end cap B64 that are clipped in the float grease seal B62 between end cap B64 and wheel shaft 53 abuts against.The inner side of the outer peripheral face of O type circle D70 and the lid part of end cap A63 abuts against.And the inner side of the outer peripheral face of O type circle G73 and the lid part of end cap B64 abuts against.Thus, the O type circle E71 being connected to wheel body 52 cooperates with the O type circle F72 of the inner peripheral surface being connected to inner core 58, prevents mud and other foreign matter from entering inside from the gap between wheel body 52 and end cap A63.
Inner circumferential in the hole of the central authorities of end cap A63 embeds and is provided with O type circle A66, and this O type circle A66 and wheel shaft 53 abut against, thus prevent the oil in store oil portion 68 from the clearance leakage between wheel shaft 53 and end cap A63.In addition, prevent mud and other foreign matter from entering inside from the gap between wheel shaft 53 and end cap A63.
In the roller of the caterpillar of embodiments of the invention 1, as follows according to the structure be assembled into as mentioned above: at the outlet side that the tip side for wheel shaft 53 is outstanding, annulus between wheel body 52 and wheel shaft 53 has bearing sub-assembly, containment member and end cap A63, inserting the entrance side of wheel shaft 53, at the annulus of wheel body 52 and wheel shaft 53 except there is bearing sub-assembly, containment member and end cap B64, also there is inner core 58 and back-up ring 78.
In the roller of the caterpillar of embodiments of the invention 1, owing to making wheel body 52 synthesize one in advance, therefore can not produce axial offset and extend, can seek to guarantee the life-span.Only be provided with inner core 58 at the one-sided of roller, therefore, there is no need for the junc-ring etc. that punching press engages, can number of components be reduced and structure simplification can be maintained.In addition, for the press-in of inner core 58, do not need power large as punching press engages, and easily assemble.
(decomposition during maintenance inspection)
When maintenance inspection, if the back-up ring 78 being used for inner core 58 to be held in the inside of inserting wheel shaft 53 side of wheel body 52 is dismantled, then need not implement the work such as demounting bolt and just can decompose.
(preventing the details of leakage of oil mechanism)
Fig. 3 is the partial enlarged drawing of the roller of the caterpillar of embodiments of the invention 1.Fig. 3 is the skeleton diagram being exaggerated the wheel body 52 of outlet side and the moving contact part between float grease seal A61 and end cap A63 supplying the tip side of the wheel shaft 53 inserted to give prominence to.Float grease seal A61 comprises sealing member H74 and sealing member I75, O type circle D70 and O type circle E71.Sealing member H74 has with sealing member I75 and contacts sealing surface 172, and this contact sealing surface 172 is in the state of the float grease seal A61 by being assembled into one, and sealing member H74 and sealing member I75 contacts thus carries out the face that seals.In end cap A63, dip plane A173 is the face that O type circle D70 contacts, and has the elastic force of O type circle D70 in the effect of this face.In wheel body 52, dip plane B174 is the face that O type circle E71 contacts, and has the elastic force of O type circle E71 described effect.
L in Fig. 3 represents the length in the gap between end cap A63 top and wheel body 52, and the value of L comprises initial set value.Because the dip plane B174 of the dip plane A173 of end cap A63 and wheel body 52 tilts, if so initial set value is larger, the power then acting on sealing member H74 and sealing member I75 and the sealing surface between them 172 diminishes, if initial set value is less, then O type circle D70 and O type circle E71 is compressed more, this is because the power acting on sealing member H74, sealing member I75 and contact sealing surface 172 becomes larger.
If the value of L is less, act on contact sealing surface 172 power excessive time, because frictional heat produces larger heating when roller rotates in real work, due to the heating that this is excessive, air in store oil portion 68 expands and causes leakage of oil, or causes content broken because high heat makes oil deterioration produce greasy filth.In addition, if the value of L is comparatively large, act on the power of contact sealing surface 172 too small time, the leak tightness of contact sealing surface 172 reduces and causes from store oil portion 68 leakage of oil, and then causes content broken due to oil starvation.In view of foregoing, need the initial set value of L to be set in suitable scope.
In punching press in the past engages, even punching press binding force is slightly less than impulsive force during actual use, then exist and the size of the longitudinally of wheel body body is extended and the hidden danger that L is diminished, in the roller of the caterpillar of embodiments of the invention 1, need not worry to diminish the leakage of oil caused due to the value of L.Therefore, in the roller of the caterpillar of embodiments of the invention 1, there is not following hidden danger: under punching press engages yet, because of the wheel solid offsetting making binding force die down produced owing to considering maintenance inspection, make the gap turn narrow of float grease seal make heating become excessive and cause leakage of oil, and then cause overall damaged.
(effect)
According to the roller of the caterpillar of embodiments of the invention 1, because be above-mentioned structure, simplify so structure can be realized, and can easily maintenance inspection.While can reducing number of components, assembling becomes easy, in addition, can extend the life-span of wheel body, and can prevent overall damaged.
{ the roller of caterpillar: embodiment 2}
Fig. 4 is the generalized section of the roller (before wheel shaft insertion) of the caterpillar of embodiments of the invention 2.In the roller of the caterpillar of embodiments of the invention 1 illustrated in fig. 4, represent axial axle sleeve A56 to be inserted after in wheel body 52 that left and right is integrated and be directly pressed into the state in wheel body 52 that left and right is integrated with the order of radial axle sleeve A54, radial axle sleeve B55.
In the roller of the caterpillar of embodiments of the invention 2, the internal diameter of the part of the path portion broad in the middle of the installation wheel shaft of right side half wheel body at wheel body 52 in Fig. 4 (inserting wheel shaft side) is greater than the internal diameter that left side half wheel body at wheel body 52 in Fig. 4 (insert wheel shaft tip side give prominence to side) installs the part of the path portion broad in the middle of wheel shaft, different from the roller of the caterpillar of above-mentioned embodiments of the invention 1 in this respect.
The internal diameter of the end side be not connected with right side half wheel body of left side half wheel body of the roller of the caterpillar of embodiments of the invention 2 is less than the external diameter of path portion broad in the middle, and, become the internal diameter of the external diameter of the end being greater than wheel shaft, thus, ladder is there is at the inwall of the wheel body 52 installing the junction section between the part of path portion broad in the middle of wheel shaft and the part of the end of installation wheel shaft, identical with the roller 51 of the caterpillar of above-mentioned embodiments of the invention 1 in this respect.
Other aspects are same with above-mentioned embodiments of the invention 1.In the diagram, represent the size of the internal diameter of right side half wheel body with B, in left side half wheel body be connected with right side half wheel body, represent the size of the internal diameter of the part of the path portion insertion broad in the middle for wheel shaft with A.
In the roller of the caterpillar of embodiments of the invention 2, the external diameter of radial axle sleeve B55 is the external diameter of the inside of the part that can be inserted into internal diameter B.In addition, be less than internal diameter B with internal diameter A, the external diameter being therefore pressed into the radial axle sleeve A54 of the inside being assembled in wheel body 52 is also less than the external diameter of radial axle sleeve B55, is the external diameter of the part can inserting internal diameter A.When radial axle sleeve A54 passes through the part of the internal diameter B of wheel body 52, because internal diameter B is greater than the external diameter of radial axle sleeve A54, therefore radial axle sleeve A54 also can not damage the inwall of the part of internal diameter B and can easily pass through.Afterwards, radial axle sleeve A54 arrives the part of internal diameter A.The part of internal diameter A is thinner than the part of internal diameter B, and radial axle sleeve A54 inserts the part of internal diameter A by suitable pressing-in force.Then, making the part of the major diameter fit internal diameter B of radial axle sleeve B55 and increase, thus, being inserted the part of internal diameter B with no damage by suitable pressing-in force when being pressed into.
If internal diameter A and internal diameter B are identical footpath, then first radial axle sleeve A54 is pressed into the part of the internal diameter B of wheel body 52, all leave moving contact trace at both inwalls of the part of the outer peripheral face of radial axle sleeve A54 and the internal diameter B of wheel body 52, be then pressed into the part of the internal diameter A in wheel body 52.In this case, before the press-in final when assembling, add N/R press-fitting step originally.In the present embodiment, because internal diameter A is less than internal diameter B, so easily maintenance inspection, and, do not have the hidden danger that assembling procedure increases or quality produced to bad impact simultaneously, due to can with the press-fitting step maintaining radial axle sleeve in the past, therefore excellent in the easness and quality (with or without moving contact trace) of assembling same level.
The roller 51 of the caterpillar of embodiments of the invention 2, except above-mentioned aspect, has the structure same with the roller 51 of the caterpillar of embodiments of the invention 1.
Thus, according to the roller 51 of the caterpillar of embodiments of the invention 2, when radial axle sleeve A54 passes through the part of the internal diameter B of wheel body 52, do not need pressing-in force, and can not inwall be injured, therefore realize structure to simplify, and while the effect of easy maintenance inspection can be reached, also can realize improving the facilitation of assembling and the quality of assembling.
{ the roller of caterpillar: embodiment 3}
Fig. 5 (a) and Fig. 5 (b) is the partial enlarged drawing of the roller of the caterpillar of embodiments of the invention 3.Fig. 5 (a) and Fig. 5 (b) is skeleton diagram moving contact part between the wheel body 52 of the entrance side at insertion wheel shaft 53 and end cap C162 amplified, Fig. 5 (a) is cross-sectional schematic, and Fig. 5 (b) is schematic side view.The end cap C162 being inserted with inner core 58 side in wheel body 52 is provided with the tapped bore 163 (through bolt hole) as Knock-Down Component when decomposing.And the region between end cap C162 and the back-up ring 78 interior inner core 58 being connected to wheel body 52 being held in desired location is also provided with back up ring 161, is sealed with antirust composition between back-up ring 78 and back up ring 161.
In order to inner core 58 is extracted from wheel body 52, first needing to dismantle back-up ring 78, end cap C162 must be dismantled in order to dismantle back-up ring 78.End cap C162 is installed on wheel shaft 53, in the present embodiment, because end cap C162 itself is provided with multiple tapped bore 163, therefore makes decomposition become easy when decomposing by bolt (not shown) is screwed into tapped bore 163.In detail, be screwed into the side of the bolt pressing wheel body 52 of tapped bore 163, end cap C162 is separated by from wheel shaft 53 thus.Accordingly, according to the present embodiment, can easily decompose when maintenance inspection.
In addition, in the present embodiment, the antirust composition utilizing back up ring 161 and be enclosed, can protect back-up ring 78 avoid contacting entered by the path between wheel body 52 and end cap C162, from external corrosion material.If the maintenance of inner core 58 becomes difficulty after being corroded property of back-up ring 78 species damages, because inner core 58 skew causes oil to leak from float grease seal B62, produce and cause overall damaged danger.And, even if inner core 58 does not offset, be also difficult in the decomposition when maintenance inspection remove back-up ring 78, produce the danger of decomposing and becoming difficulty.According to the present embodiment; the antirust composition utilizing back up ring 161 and be enclosed; protection back-up ring 78 does not sustain damage, gets rusty; thus; while the life of back-up ring 78 can be made; even if under back-up ring 78 also can being made to remain on normal state during decomposition when can expect maintenance inspection after long-term use, even if thus also can reliably implement after long-term use to decompose.
The roller of the caterpillar of embodiments of the invention 3, except above-mentioned aspect, has the structure same with the roller 51 of the caterpillar of embodiments of the invention 1.
Thus, according to the roller of the caterpillar of embodiments of the invention 3, dismounting due to end cap becomes simple thus the decomposition of roller is become and is more prone to, realize structure to simplify, and the effect of easy maintenance inspection can become larger, in addition, pass through rust-proof effect, can the easiness that checks of persistence maintenance for a long time, also can prevent damaged etc. in addition.
In addition, the present invention is not limited to above-mentioned embodiment, can carry out various distortion and implement in the scope not departing from its invention aim.And, the composed component of the respective embodiments described above can be carried out combination in any in the scope not departing from invention aim.Such as, in the roller of the caterpillar of the above embodiments 1, be illustrated with the roller being used as bottom roller, but also can use as upper roller.In the roller of the present embodiment, wheel body is integrated by welding, but also can utilize based on welding method, be such as integrated by friction welded etc.
Claims (5)
1. a roller for caterpillar, this roller is supported by the vehicle body frame of caterpillar and is configured at ungrounded side of crawler belt, and it is characterized in that, the roller of this caterpillar has:
Wheel shaft, it has at middle body the path portion broad in the middle that diameter is greater than the diameter of end;
Wheel body, it is integrated by left and right two parts, to be coated at described wheel shaft and with the state that can rotate by described axle bearing, the entrance side of the described wheel shaft of insertion of this wheel body has the internal diameter that can insert described path portion broad in the middle, and the outlet side that the tip side of the described wheel shaft that the confession of this wheel body is inserted is given prominence to has the internal diameter of the external diameter being less than described path portion broad in the middle;
Radial axle sleeve, it be cylindrical shape, and to be sheathed between the outer peripheral face of described path portion broad in the middle and the inner peripheral surface of described wheel body and described wheel body is rotated relative to described wheel shaft;
Containment member, it is coated at the end of described wheel shaft respectively;
End cap, it is from the end overcoat of described wheel shaft, for keeping described containment member; And
Inner core, its entrance side overcoat from described wheel body and described wheel shaft is held in described wheel body;
At the described outlet side of described wheel body, outer peripheral face and the described wheel body of described containment member abut against; At the described entrance side of described wheel body, outer peripheral face and the described inner core of described containment member abut against.
2. the roller of caterpillar according to claim 1, is characterized in that,
The internal diameter of the left and right of described wheel body is different, the internal diameter of described outlet side is less than the internal diameter of described entrance side, and the radial axle sleeve of the minor diameter that described radial axle sleeve is mated by the internal diameter of the outlet side with described wheel body and the large diameter radial axle sleeve mated with the internal diameter of the entrance side of described wheel body are formed.
3. the roller of caterpillar according to claim 1 and 2, is characterized in that,
Described end cap has in the local of periphery the protrusion that one or more has tapped bore, and described tapped bore is positioned at when being screwed into screw and makes described screw be connected to the position of the side of described wheel body.
4. the roller of caterpillar according to claim 1 and 2, is characterized in that,
Have the back-up ring for described inner core being fixed on described wheel body, the region between the described end cap and described back-up ring of the entrance side position at described wheel body is provided with protection ring, between described back-up ring and described protection ring, be sealed with antirust composition.
5. the roller of caterpillar according to claim 3, is characterized in that,
Have the back-up ring for described inner core being fixed on described wheel body, the region between the described end cap and described back-up ring of the entrance side position at described wheel body is provided with protection ring, between described back-up ring and described protection ring, be sealed with antirust composition.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014099116A JP2015214292A (en) | 2014-05-13 | 2014-05-13 | Trank roller of crawler type traveling vehicle |
| JP2014-099116 | 2014-05-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105083403A true CN105083403A (en) | 2015-11-25 |
Family
ID=54042659
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510217633.2A Pending CN105083403A (en) | 2014-05-13 | 2015-04-30 | Roller wheel for caterpillar type driving vehicle |
| CN201520276900.9U Expired - Fee Related CN204623604U (en) | 2014-05-13 | 2015-04-30 | The roller of caterpillar |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520276900.9U Expired - Fee Related CN204623604U (en) | 2014-05-13 | 2015-04-30 | The roller of caterpillar |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2015214292A (en) |
| CN (2) | CN105083403A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015214292A (en) * | 2014-05-13 | 2015-12-03 | 太平洋精機ホールディング株式会社 | Trank roller of crawler type traveling vehicle |
| US10023251B2 (en) * | 2016-06-24 | 2018-07-17 | Caterpillar Inc. | Track roller assembly and method |
| CN109720429A (en) * | 2017-10-30 | 2019-05-07 | 徐州徐工履带底盘有限公司 | A kind of engineering machinery cast type guide wheel |
| CN115285242B (en) * | 2022-08-29 | 2023-08-22 | 三一重机有限公司 | Crawler wheel, crawler travel device and working machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5288143A (en) * | 1993-01-14 | 1994-02-22 | Caterpillar Inc. | Track roller assembly having a replaceable flange |
| US7108337B2 (en) * | 2002-10-07 | 2006-09-19 | Komatsu Ltd. | Roller for a crawler type traveling vehicle |
| CN201195562Y (en) * | 2008-04-10 | 2009-02-18 | 中国一拖集团有限公司 | Thrust wheel of digging machine |
| CN201646919U (en) * | 2009-12-28 | 2010-11-24 | 杨洪根 | Track roller and guide wheel of tracked mechanical traveling mechanism |
| CN102421660A (en) * | 2009-06-01 | 2012-04-18 | 株式会社小松制作所 | Roller wheel for track belt-type traveling vehicle |
| CN204623604U (en) * | 2014-05-13 | 2015-09-09 | 太平洋精机控股公司 | The roller of caterpillar |
-
2014
- 2014-05-13 JP JP2014099116A patent/JP2015214292A/en active Pending
-
2015
- 2015-04-30 CN CN201510217633.2A patent/CN105083403A/en active Pending
- 2015-04-30 CN CN201520276900.9U patent/CN204623604U/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5288143A (en) * | 1993-01-14 | 1994-02-22 | Caterpillar Inc. | Track roller assembly having a replaceable flange |
| US7108337B2 (en) * | 2002-10-07 | 2006-09-19 | Komatsu Ltd. | Roller for a crawler type traveling vehicle |
| CN201195562Y (en) * | 2008-04-10 | 2009-02-18 | 中国一拖集团有限公司 | Thrust wheel of digging machine |
| CN102421660A (en) * | 2009-06-01 | 2012-04-18 | 株式会社小松制作所 | Roller wheel for track belt-type traveling vehicle |
| CN201646919U (en) * | 2009-12-28 | 2010-11-24 | 杨洪根 | Track roller and guide wheel of tracked mechanical traveling mechanism |
| CN204623604U (en) * | 2014-05-13 | 2015-09-09 | 太平洋精机控股公司 | The roller of caterpillar |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015214292A (en) | 2015-12-03 |
| CN204623604U (en) | 2015-09-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204623604U (en) | The roller of caterpillar | |
| KR101265527B1 (en) | Track roller device | |
| US7963014B2 (en) | Method for retrofitting an existing idler assembly | |
| US7832815B2 (en) | Track roller assembly and machine using same | |
| RU2554710C2 (en) | Pin to be used in road rollers and running gear assemblies | |
| US3073657A (en) | Rotary seal | |
| JP2012116363A (en) | Crawler bush and crawler link device | |
| JP2004149111A (en) | Rolling wheel for crawler type traveling vehicle | |
| CN102099241A (en) | Self-lubricated track roller assembly and machine using same | |
| CN104870842A (en) | Outboard sealing system for wheel end assemblies | |
| US20100096195A1 (en) | Track roller assembly and machine using same | |
| CN101868639A (en) | Sealing device, rolling bearing, and rolling bearing for wheel | |
| CN104763736A (en) | Bearing module | |
| JP2017078435A (en) | Seal structure | |
| CN108488366B (en) | Wind-powered electricity generation gear box guide shaft seal structure | |
| CN202193136U (en) | Supporting wheel or guide wheel with combined type mud water sealing structure | |
| CN204253626U (en) | Full coverage formula shield bearing | |
| US10309512B2 (en) | Axle assembly | |
| JP2008082392A (en) | Bearing device for railroad vehicle wheel shaft | |
| KR100767939B1 (en) | Driving mechanism for work machine | |
| US3276289A (en) | Gear case | |
| CN204452648U (en) | A kind of thrust wheel device of caterpillar band harvester | |
| CN102996722A (en) | Bearing-grease-lubrication large-torque cycloid reduction gearbox | |
| US3409306A (en) | Bearing seal structure | |
| CN203473043U (en) | Supporting wheel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151125 |