JP5647560B2 - Rotating body support device for traveling - Google Patents

Description

  The present invention relates to a traveling rotator in which a seal member is provided between a shaft body on which a traveling rotator is integrally rotated and a support cylinder that supports the shaft body so as to be relatively rotatable via a bearing. The present invention relates to a support device.

  As the support device for the traveling rotator, a sealing material is provided between a shaft body that is mounted so as to integrally rotate the traveling rotator and a support cylinder that supports the shaft body so as to be relatively rotatable via a bearing. The shaft body is provided with a seal cover for closing the opening on the cylinder end side of the support cylinder on the shaft body, and between the seal cover and a bearing provided to support the shaft body. There is known a structure in which a positioning collar is attached to the outer periphery of the sleeve and a sealing material is attached between the outer periphery of the collar and the inner peripheral surface of the support cylinder (see, for example, Patent Document 1).

Japanese Utility Model Publication No. 06-5978 (see the right column, page 11, line 11 to line 25, FIG. 1 of the gazette)

In the traveling rotating body support device configured as described above, intrusion of muddy water or the like is restricted at the fitting portion between the tube end of the support tube and the seal cover, but the intrusion is completely prevented. It is difficult, and there is a tendency that muddy water or the like enters from the fitting portion to some extent. In that case, muddy water entering from the fitting portion may enter the inside of the sealing material, and wear of the sealing material may easily proceed.
Also, in order to position the outer peripheral surface of the collar by fitting a sealing material, a collar-shaped portion for positioning is integrated from the outer peripheral surface of the collar toward the radially outer side of the collar on the tube end side of the support cylinder. Is formed. Therefore, it is necessary to detach the collar and the sealing material when performing maintenance work such as replacing the sealing material, but there is a possibility that the detachment operation is difficult and the collar may be deformed. There is room for improvement.

  The present invention suppresses intrusion of muddy water or the like into a sealing material provided between a shaft body that is mounted so as to rotate a rotating body for traveling and a support cylinder that supports the shaft body, thereby improving the durability of the sealing material. The purpose is to facilitate the maintenance work such as the replacement of the sealing material.

Technical means of the support device of the driving rotator in the present invention taken in order to achieve the above object, in the following characteristic configuration.
In one characteristic configuration, a rotation for travel in which a seal member is provided between a shaft body that is mounted so that the rotation body for travel is integrally rotated and a support cylinder that supports the shaft body through a bearing so as to be relatively rotatable. A body support device,
A tube end facing member that rotates integrally with the shaft body is provided at a position facing the end of the support tube, and the end of the support tube is positioned on the surface facing the end of the support tube of the tube end facing member. Forming a fitting portion to be fitted into the inner peripheral surface of the portion side,
A collar is externally fitted to the shaft body in the support cylinder, and the seal material is attached between the outer peripheral surface of the collar and the inner peripheral surface of the support cylinder, and the seal material is externally attached to the collar. A possible sealing material mounting portion, and is extended to the cylinder end facing member side from the sealing material mounting portion and has the same diameter as the diameter of the sealing material mounting portion or a diameter smaller than the diameter of the sealing material mounting portion. A formed grip portion,
The seal material is mounted on the outer peripheral surface side of the collar in a state of covering the outer seal portion from the end portion side of the support tube and the outer seal portion mounted on the inner peripheral surface side of the support tube. An inner seal part,
The fitting portion includes a cylindrical protruding portion that is formed to protrude in a cylindrical shape so as to be fitted into the inner peripheral surface on the end portion side of the support tube, and protrudes the protruding end of the cylindrical protruding portion. With the end surface on the side facing the inner seal portion, the inner seal portion is brought close to the end surface on the end portion side of the support tube, the outer peripheral surface of the grip portion, and the facing surface of the tube end facing member A storage space for storing muddy water or the like that has entered from the fitting portion is formed between an inner peripheral surface of the cylindrical protrusion and an end surface of the inner seal portion on the end side of the support tube. And
The interval between the projecting end surface of the cylindrical projection and the end surface of the inner seal portion on the support tube end portion side is set such that the outer peripheral edge of the inner seal portion at the position including the end surface and the inner peripheral surface of the support tube. It is formed wider than the interval.
In one characteristic configuration, the end portion of the support tube protrudes toward the tube end facing member side with respect to the facing surface of the tube end facing member.
In one characteristic configuration, a protruding protrusion for engaging with an end portion of the seal material far from the tube end facing member is formed at an end portion of the collar far from the tube end facing member. .
According to this characteristic configuration, the pull-out projection that engages with the end of the sealing material far from the cylinder end facing member is formed on the collar when the gripping portion of the collar is gripped and the pull-out operation is performed. As the collar is extracted, the sealing material is also extracted. Therefore, there is an advantage that the maintenance work can be performed more easily and efficiently.
In one characteristic configuration, a rotation for travel in which a seal member is provided between a shaft body that is mounted so that the rotation body for travel is integrally rotated and a support cylinder that supports the shaft body through a bearing so as to be relatively rotatable. A body support device,
A tube end facing member that rotates integrally with the shaft body is provided at a position facing the end of the support tube, and the end of the support tube is positioned on the surface facing the end of the support tube of the tube end facing member. Forming a fitting part that fits externally or internally with respect to the part,
A collar is externally fitted to the shaft body in the support cylinder, and the seal material is attached between the outer peripheral surface of the collar and the inner peripheral surface of the support cylinder, and the seal material is externally attached to the collar. A possible sealing material mounting portion, and is extended to the cylinder end facing member side from the sealing material mounting portion and has the same diameter as the diameter of the sealing material mounting portion or a diameter smaller than the diameter of the sealing material mounting portion. A formed grip portion,
The fitting is between the outer peripheral surface of the grip portion of the collar on the inner peripheral surface side of the support cylinder, the opposing surface of the cylinder end facing member, and the end surface of the sealing material on the support cylinder end side. Form a storage space for storing muddy water that invades from the joint ,
At the end of the collar on the side far from the tube end facing member, a drawer protrusion is formed that engages the end of the sealing material on the side far from the tube end facing member .

According to this characteristic configuration, even if muddy water or the like enters from between the cylinder end side of the support cylinder and the fitting portion of the cylinder end facing member fitted to the cylinder end side, the muddy water or the like that has entered directly Intrusion to the inside of the sealing material is suppressed, and can be temporarily stored in the storage space.
Therefore, if the amount of muddy water entering is small, it is possible to restrict the muddy water from reaching the inside of the sealing material. If the amount of muddy water is so large that the muddy water enters the inside of the sealing material. Even if this occurs, it is advantageous in that the amount of penetration can be reduced.

  Further, since the collar is provided with a grip portion formed to have the same diameter as the diameter of the seal material mounting portion or smaller than the diameter of the seal material mounting portion, the collar can be attached and detached by grasping the grip portion. Therefore, the collar can be easily attached and detached, and accordingly, the seal material can be easily attached and detached, and the maintenance work can be easily performed efficiently. In addition, if the diameter of the gripping portion is small, it is advantageous in that the volume of the storage space can be increased as compared with the case where the gripping portion has a large diameter.

In addition , when pulling out the collar gripping part, the collar has a pull-out projection that engages the end of the sealing material far from the cylinder end facing member. Along with this, the sealing material is also extracted. Therefore, there is an advantage that the maintenance work can be performed more easily and efficiently.

In one characteristic structure, the fitting part formed in the said opposing surface side of the said cylinder end opposing member was formed in the cylinder shape so that it might fit in with respect to the internal peripheral surface at the edge part side of the said support cylinder. constituted by cylindrical projections, Oh Ru is brought close to the protruding end of the cylindrical protrusion portion on the end surface of the support cylinder end portion side of the sealing material.

According to this characteristic configuration, the cylindrical protrusion that fits into the end of the support cylinder is formed on the opposing surface side of the cylindrical end opposing member so as to correspond to the protrusion margin of the cylindrical protrusion. It is advantageous in that the dimension in the storage cylinder length direction of the storage space can be ensured by the amount. In addition, the cylindrical protrusion also serves as a member that prevents the sealing material from coming off.

It is a whole side view of a combine. It is sectional drawing which shows the transmission system in a transmission case. It is sectional drawing which shows the sealing material mounting part in a travel drive shaft. It is an expanded sectional view of a sealing material mounting part. It is sectional drawing which shows the decomposition | disassembly state of a sealing material mounting part. It is an expanded sectional view of the sealing material mounting part which shows another embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[Overall structure of the combine]
FIG. 1 shows a self-removing combine as an example of a working vehicle to which the traveling rotating body support device of the present invention is applied.
This combine includes an aircraft frame 1 that is a skeleton of the aircraft, a pair of left and right crawler type traveling devices 2 that support the aircraft, a cutting unit 3 that is coupled to the front of the aircraft frame 1, and a rear side of the aircraft frame 1. The threshing device 4 and the glen tank 5 are provided. The threshing device 4 includes a feed chain 9 on the left side of the machine body. A driving unit 6 having a driving seat 6a on the right side of the body is provided on the front side of the body frame 1.

  An engine E (see FIG. 2) is provided at a lower position of the driver seat 6a in the driver 6. Further, a transmission case 7 (transmission case) for transmitting driving force to the left and right crawler traveling devices 2 is disposed at a central portion in the left-right direction at the front position of the body frame 1.

A hydrostatic continuously variable transmission 10 as a main transmission unit is connected to the upper part of the transmission case 7.
The hydrostatic continuously variable transmission 10 includes an axial plunger type hydraulic pump 11 having a variable capacity, and an axial plunger type hydraulic motor 12 driven by pressure oil from the hydraulic pump 11. A transmission belt 15 for transmitting the driving force of the engine E is stretched on an input pulley 14 provided on an input shaft 13 of the hydraulic pump 11. The driving force output from the hydrostatic continuously variable transmission 10 is transmitted to the inside of the transmission case 7 via the output shaft 16 connected to the hydraulic motor 12.
The driving force of the engine E is configured so that power is transmitted to the threshing device 4 via a belt transmission mechanism or the like (not shown).

[Internal structure of transmission case]
A structure in which the driving force of the engine E is transmitted to the traveling device 2 and the cutting unit 3 will be described.
Inside the transmission case 7, the continuously and continuously reversing drive force output from the output shaft 16 of the hydrostatic continuously variable transmission 10 is further shifted to lower the travel drive shaft. A traveling mission unit 20 that transmits to 30 is provided.

The traveling mission unit 20 includes a traveling subtransmission mechanism 21 and a turning transmission mechanism 22.
In the transmission case 7, the output shaft 16 of the hydrostatic continuously variable transmission 10 is gear-coupled to the output shaft 16 and the input shaft 21 a of the traveling subtransmission mechanism 21. Then, on the shaft end side of the input shaft 21a, a cutting output pulley 3a for outputting a driving force to the cutting unit 3 is supported so as to be integrally rotatable, from the cutting output pulley 3a toward the cutting unit 3. A transmission mechanism such as a belt transmission mechanism is provided. As a result, the driving force output from the hydrostatic continuously variable transmission 10 is transmitted to the traveling auxiliary transmission mechanism 21 and the cutting unit 3 separately.

  The traveling sub-transmission mechanism 21 includes a transmission gear 23 that slides on the input shaft 21a and transmits the driving force transmitted from the hydrostatic continuously variable transmission 10 by decelerating with three types of reduction ratios. The shifted power is transmitted to a center gear 24 described later in the turning transmission mechanism 22.

The driving force transmitted to the center gear 24 is transmitted separately to the left and right drive transmission gears 28L and 28R via the turning transmission mechanism 22.
The turning transmission mechanism 22 is rotatable relative to the support shaft 25, a support shaft 25 that is rotatably supported by the transmission case 7, a center gear 24 as a “drive gear” that is rotatably supported by the support shaft 25, and the support shaft 25. And a pair of left and right clutch gears 26 engaged and disengaged on both the left and right sides of the center gear 24, and a side brake 27 comprising a pair of left and right wet multi-plate clutches.
Accordingly, when the clutch gear 26 moves on the support shaft 25, the left and right clutch gears 26 engaged with the center gear 24 are disengaged from each other, so that the clutch disengaged state is established. Become. The clutch gear 26 operated to the clutch disengagement side is further operated in the disengagement direction, so that the side brake 27 on the clutch disengagement side is switched to the brake applied state.

A drive transmission shaft 28 is rotatably supported by the transmission case 7 on the lower side of the traveling body of the turning transmission mechanism 22, and a pair of left and right drive transmission gears 28 </ b> L and 28 </ b> R are rotatably supported by the drive transmission shaft 28. .
The left drive transmission gear 28L and the left travel gear 29L are always meshed, and when a driving force is transmitted from the left drive transmission gear 28L to the left travel gear 29L, the travel drive shaft 30 and the crawler drive wheel body. The left traveling device 2 is driven via 31 (corresponding to a traveling rotator and a cylinder end facing member). Similarly, the right drive transmission gear 28R and the right travel gear 29R are always meshed, and when a driving force is transmitted from the right drive transmission gear 28R to the right travel gear 29R, the travel drive shaft 30 and the crawler. The right traveling device 2 is driven via a driving wheel 31 (corresponding to a traveling rotating body and a cylinder end facing member).

If the left and right clutch gears 26 are not operated to the cut side where the engagement with the center gear 24 is disengaged but remain engaged with the center gear 24, the aircraft travels straight. .
The turning transmission mechanism 22 includes shift operating bodies 17L and 17R that operate in conjunction with a steering lever 8 (see FIG. 1) as a steering operation tool provided in the operating unit 6. The left and right clutch gears 26 are configured to be operated separately.

[Structure of sealant mounting part]
As shown in FIGS. 2 to 4, the traveling drive is performed via a ball bearing 41 near the end of a cylindrical axle case 40 (corresponding to a support cylinder) connected to the left and right sides of the transmission case 7. An end portion of the shaft 30 (corresponding to the shaft body) is supported.
The travel drive shaft 30 includes a spline shaft portion 30a and a screw shaft portion 30b at the end, and the crawler drive wheel body 31 having a spline hole 31b fitted to the spline shaft portion 30a is externally fitted to the screw drive shaft. It is fastened and fixed by a nut 34 screwed into the portion 30b and a pressing plate 35.

  The crawler driving wheel body 31 has an engaging claw 31a for engaging and driving an engaging hole (not shown) formed in the crawler belt 2a of the crawler traveling device 2 on the outer peripheral side, A cylindrical projecting portion 33 (projecting in a cylindrical shape so as to be fitted into the inner peripheral surface 40a of the cylindrical end of the axle case 40 on the opposite surface 32 side facing the cylindrical end of the axle case 40). Corresponding to the fitting portion).

A relatively thick collar 50 made of a metal material is disposed between the inner race 41a of the ball bearing 41 fitted on the travel drive shaft 30 and the facing surface 32 of the crawler drive wheel 31 so that the travel drive shaft. 30 is attached in a state where both end sides in the axial direction are clamped.
The outer race 41b of the ball bearing 41 is locked by a stopper ring 42 at a location closer to the cylinder end of the axle case 40, and at a location closer to the cylinder end of the axle case 40 than the outer race 41b. A sealing material 60 is mounted between the outer peripheral surface of the collar 50 and the inner peripheral surface 40 a of the axle case 40.

  The seal material 60 is configured by a combination of an inner seal portion 61 attached to the outer peripheral surface side of the collar 50 and an outer seal portion 62 attached to the inner peripheral surface 40a side of the axle case 40, and travel driving As the shaft 30 rotates, the inner seal portion 61 and the outer seal portion 62 are configured to rotate relative to each other while being in sliding contact with each other.

  The collar 50 is provided with a seal material mounting portion 51 on the inner back side to which the seal material 60 is fitted, and the crawler driving wheel body closer to the cylinder end side of the axle case 40 than the seal material mounting portion 51. 31 has a portion extended to the side, and the extended portion is formed to be slightly smaller in diameter than the seal material mounting portion 51, and this portion constitutes a grip portion 52 for gripping when the collar 50 is pulled out. doing.

That is, the grip 52 is extended further toward the cylinder end side of the axle case 40 than the end surface 60a of the seal material 60 closer to the cylinder end side of the axle case 40, thereby causing the traveling drive shaft 30 to move in the axial direction. It has a length longer than a predetermined length required for gripping with a tool or the like, and has a small diameter so as to have a sufficient radial gap between the inner peripheral surface 40a of the axle case 40 and a tool or the like. Therefore, the collar 50 can be easily pulled out by gripping the grip portion 52.
In addition, since the grip portion 52 is configured to have a small diameter as described above, a large storage space S described later is formed between the grip portion 52 and the inner peripheral surface 40a of the outer axle case 40. It is also useful to do.

A collar-like pulling projection 53 is formed at the inner back end of the collar 50 that is far from the cylinder end of the axle case 40 and projects radially outward from the outer peripheral surface of the seal material mounting portion 51. ing.
By forming the protruding protrusion 53 so as to protrude outward from the outer peripheral surface of the seal material mounting portion 51, the inner seal portion 61 of the seal material 60 mounted on the seal material mounting portion 51 is formed. The end part on the inner back side comes into contact, and the insertion end position is regulated.
Therefore, the pull-out projection 53 serves as a positioning means for determining the insertion and mounting position of the sealing material 60 and when the sealing material 60 is pulled out by gripping the gripping portion 52 of the collar 50. It also serves as an engaging means for engaging the rear side (the side far from the cylinder end of the axle case 40) and pulling out the sealing material 60 from the rear side.

As shown in FIG. 4, in the collar 50, the outer diameter of the protrusion 53 for drawing is the maximum diameter, the outer diameter of the sealing material mounting portion 51 is next large, and the outer diameter of the grip portion 52 is the smallest. It is formed as follows. The outer diameter of the projection 53 having the largest diameter is smaller than the inner diameter of the stopper ring 42 for positioning the outer race 41 b of the ball bearing 41. The end of the side is in contact with the inner race 41 a of the ball bearing 41 in a state of entering the inside of the stopper ring 42.
At this time, the surface 53a on the side near the cylinder end of the axle case 40 of the drawer protrusion 53 with which the sealing material 60 is in contact is the surface 42a on the side near the cylinder end of the axle case 40 of the stopper ring 42. It is formed so as to be almost flush with each other.
In addition, on the inner peripheral side of the inner seal portion 61 of the seal material 60, an inclined surface is formed so that the diameter increases toward the end portion on the inner back end near the pull-out projection 53. There is a groove portion formed on the outer peripheral surface 52a of the collar 50 at a location facing the inclined surface so as to be slightly smaller in diameter than the maximum diameter portion of the outer peripheral surface 52a.

4 is an oil seal provided between the inner race 41a of the ball bearing 41 and the end of the collar 50 on the side far from the cylinder end of the axle case 40. Reference numeral 64 denotes an oil seal provided between the end portion of the collar 50 on the side close to the cylinder end of the axle case 40 and the facing surface 32 of the crawler driving wheel 31.
An oil seal 64 provided between the collar 50 and the facing surface 32 of the crawler driving wheel 31 is formed by a flat end surface 50a of the collar 50 near the cylinder end of the axle case 40 and the crawler driving wheel 31. It is mounted in a state in which most of the concave portion 32a is inserted between the concave portion 32a formed on the opposite surface 32 of the first concave portion 32a.

As shown in FIGS. 3 and 4, on the inner peripheral surface 40 a side of the axle case 40, the outer peripheral surface 52 a of the grip portion 52 of the collar 50, the facing surface 32 of the crawler driving wheel 31, and the sealing material 60 A storage space S for storing muddy water or the like entering from the outside is formed between the end surface 60a of the axle case 40 closer to the cylinder end side.
The cylindrical projection 33 formed in a cylindrical shape on the facing surface 32 of the crawler driving wheel 31 includes an outer peripheral surface 33a facing the inner peripheral surface 40a of the axle case 40 and an inner periphery of the cylindrical projection 33. The inner peripheral surface 33b on the side and a projecting end surface 33c separated from the facing surface 32 are formed, and a space recessed from the projecting end surface 33c to the facing surface 32 side is formed on the inner peripheral side of the inner peripheral surface 33b. Thus, the volume of the storage space S is increased.
In the storage space S, as shown by a dotted line in FIG. 4, an inner peripheral surface 40 a of the axle case 40 and an outer peripheral surface 33 a of a cylindrical projection 33 formed on the opposing surface 32 of the crawler driving wheel 31. In some cases, muddy water or the like may enter through a slight gap between the inner seal portion 61 and the outer seal portion 62 of the sealing material 60 by storing the muddy water or the like that has entered the storage space S. The possibility that muddy water or the like enters the contact area can be reduced. Alternatively, even if it enters, the amount of entry can be reduced.

The distance between the projecting end surface 33 c of the cylindrical projection 33 formed on the facing surface 32 of the crawler driving wheel 31 and the end surface 60 a of the seal member 60 near the tube end of the axle case 40 is determined by the seal member 60. The inner seal portion 61 is formed wider than the distance between the outer peripheral edge 61a at the position including the end surface 60a and the inner peripheral surface 40a of the axle case 40. The storage space passes through the space between the protruding end surface 33c of the cylindrical projection 33 and the end surface 60a of the sealing material 60 rather than the space between the outer peripheral edge 61a of the portion 61 and the inner peripheral surface 40a of the axle case 40. It is formed so that it can easily enter S.
Further, a portion of the outer peripheral surface 52a of the collar 50 that is located at the boundary between the seal material mounting portion 51 and the grip portion 52 is formed on an inclined surface having a small diameter on the grip portion 52 side and a large diameter on the seal material mounting portion 51 side. The end of the seal member 60 on the inner peripheral side of the inner seal portion 61 closer to the end surface 60a is inclined so that the side closer to the end surface 60a has a larger diameter and the side farther from the end surface 60a has a smaller diameter. A surface is formed. The storage space is formed by an inclined surface of the outer peripheral surface 52a of the collar 50 that is located at the boundary and an inclined surface that is formed at the inner peripheral side of the inner seal portion 61 and at the end portion close to the end surface 60a. A space having a triangular cross-section that is a part of S is formed.

  The cylindrical projection 33 formed on the facing surface 32 of the crawler driving wheel 31 constitutes a fitting portion for being fitted into the cylinder end of the axle case 40. By forming such a cylindrical protrusion 33 on the opposing surface 32 of the crawler driving wheel 31, it is constituted by an inner peripheral surface 40 a on the cylinder end side of the axle case 40 and an outer peripheral surface 33 a of the cylindrical protrusion 33. A small gap is formed in the axial direction of the axle case 40 to prevent intrusion of muddy water and the like from the outside. Since it is also located in close proximity to the end surface 60a on the cylinder end side of 40, it also serves as a means for regulating the withdrawal of the sealing material 60.

In the above-described structure, maintenance work involving attachment and detachment of the sealing material 60 is performed by loosening the nut 34 with respect to the travel drive shaft 30 and extracting the holding plate 35 and the crawler drive wheel body 31 as shown in FIG. After that, the grip portion 52 of the collar 50 is gripped, extracted from the travel drive shaft 30 together with the seal material 60, and the seal material 60 is removed from the extracted collar 50, so that the seal material 60 can be easily removed. Is.
When attaching, the sealing material 60 is attached to the collar 50 in the reverse procedure, and then the collar 50 is attached to the traveling drive shaft 30 while supporting the grip portion 52 of the collar 50 and removed. And the presser plate 35 is inserted into the spline shaft portion 30 a of the travel drive shaft 30 and is attached by tightening the nut 34.

[Other Embodiment 1]
In the above embodiment, the fitting portion is configured so that the cylindrical protrusion 33 formed on the facing surface 32 of the crawler driving wheel 31 is fitted into the cylinder end of the axle case 40. For example, as illustrated in FIG. 6A, the fitting portion may be configured so as to be externally fitted to the cylinder end of the axle case 40.
Further, as shown in FIG. 6B, the cylindrical case portion 33 is not provided on the facing surface 32 side of the crawler driving wheel body 31, and the axle case 40 is arranged with respect to the step portion 36 provided on the facing surface 32. The fitting portion may be configured so as to externally fit the tube end side.
Other configurations may be the same as those in the above-described embodiment.

[Second embodiment]
In the above embodiment, the crawler driving wheel body 31 is exemplified as the cylinder end facing member that rotates integrally with the travel drive shaft 30 at a position facing the cylinder end of the axle case 40. However, the crawler driving wheel body 31 is not limited thereto. In addition to the wheel 31, another member (not shown) provided with a facing surface 32 that is attached to the travel drive shaft 30 and faces the cylinder end of the axle case 40 may be provided.
In this case, the fitting portion that is fitted or fitted to the cylinder end of the axle case 40 may be formed on the facing surface 32 of the other member.
Further, the shaft body provided with the cylinder end facing member is not limited to the travel drive shaft 30, and may be a simple shaft body that does not transmit the driving force, for example, and the travel rotating body is also like the crawler drive wheel body 31. The rotating body is not limited to transmitting the driving force but may be a rotating body such as a wheel.
Other configurations may be the same as those in the above-described embodiment.

[3 of another embodiment]
In the above embodiment, the grip portion 52 formed on the collar 50 is formed to have a smaller diameter than the seal material mounting portion 51 into which the seal material 60 is fitted. You may comprise 52 and the sealing material mounting part 51 with the same diameter.
Other configurations may be the same as those in the above-described embodiment.

  The traveling rotating body support device according to the present invention is not limited to the self-removing combine as shown in the embodiment, but can be applied to a general combine, and agriculture such as rice transplanters and lawn mowers. It can also be applied to construction machines such as work machines and backhoes. Furthermore, the present invention can be similarly applied not only to the crawler traveling device 2 but also to a traveling rotating body for wheels (front wheels or rear wheels).

30 Shaft body 31 Cylindrical facing member 32 Opposing surface 33 Cylindrical protrusion
33b Inner peripheral surface
33c Protruding end surface 40 Support cylinder 40a Inner peripheral surface 50 Collar 51 Sealing material mounting part 52 Gripping part 52a Outer peripheral surface 53 Drawing protrusion 60 Sealing material 60a
61 Inner seal
61a Outer edge
62 Outer seal part S Storage space

Claims (5)

A traveling rotating body support device in which a seal member is provided between a shaft body that is mounted so as to rotate integrally with a traveling rotating body and a support cylinder that supports the shaft body in a relatively rotatable manner via a bearing. There,
A tube end facing member that rotates integrally with the shaft body is provided at a position facing the end of the support tube, and the end of the support tube is positioned on the surface facing the end of the support tube of the tube end facing member. part a fitting portion for fitting in the hand to the inner peripheral surface of the side form,
A collar is externally fitted to the shaft body in the support cylinder, and the seal material is attached between the outer peripheral surface of the collar and the inner peripheral surface of the support cylinder, and the seal material is externally attached to the collar. A possible sealing material mounting portion, and is extended to the cylinder end facing member side from the sealing material mounting portion and has the same diameter as the diameter of the sealing material mounting portion or a diameter smaller than the diameter of the sealing material mounting portion. A formed grip portion,
The seal material is mounted on the outer peripheral surface side of the collar in a state of covering the outer seal portion from the end portion side of the support tube and the outer seal portion mounted on the inner peripheral surface side of the support tube. An inner seal part,
The fitting portion includes a cylindrical protruding portion that is formed to protrude in a cylindrical shape so as to be fitted into the inner peripheral surface on the end portion side of the support tube, and protrudes the protruding end of the cylindrical protruding portion. With the end surface on the side facing the inner seal portion, the inner seal portion is brought close to the end surface on the end portion side of the support tube, the outer peripheral surface of the grip portion, and the facing surface of the tube end facing member , formation and the tubular projecting portion inner peripheral surface of, between said support tube end side end face of the said inner sealing portion, a storage space for storing the muddy water invaded from the fitting portion and,
The interval between the projecting end surface of the cylindrical projection and the end surface of the inner seal portion on the support tube end portion side is set such that the outer peripheral edge of the inner seal portion at the position including the end surface and the inner peripheral surface of the support tube. A support device for a traveling rotating body, characterized in that it is formed wider than the distance between them. The travel rotating body support device according to claim 1, wherein the end portion of the support tube protrudes toward the tube end facing member with respect to the facing surface of the tube end facing member. The end remote from the tubular end face member of said collar, said claim from said tubular end face member of the sealing member is formed with a drawer protrusion which engages the end of the side away 1 or 2 rotatable travel of the support device according to. A traveling rotating body support device in which a seal member is provided between a shaft body that is mounted so as to rotate integrally with a traveling rotating body and a support cylinder that supports the shaft body in a relatively rotatable manner via a bearing. There,
A tube end facing member that rotates integrally with the shaft body is provided at a position facing the end of the support tube, and the end of the support tube is positioned on the surface facing the end of the support tube of the tube end facing member. Forming a fitting part that fits externally or internally with respect to the part,
A collar is externally fitted to the shaft body in the support cylinder, and the seal material is attached between the outer peripheral surface of the collar and the inner peripheral surface of the support cylinder, and the seal material is externally attached to the collar. A possible sealing material mounting portion, and is extended to the cylinder end facing member side from the sealing material mounting portion and has the same diameter as the diameter of the sealing material mounting portion or a diameter smaller than the diameter of the sealing material mounting portion. A formed grip portion,
The fitting is between the outer peripheral surface of the grip portion of the collar on the inner peripheral surface side of the support cylinder, the opposing surface of the cylinder end facing member, and the end surface of the sealing material on the support cylinder end side. Form a storage space for storing muddy water that invades from the joint,
  A pull-out projection that engages with an end of the sealing material far from the tube end facing member is formed at an end of the collar far from the tube end facing member. Support device for traveling rotating body. By a cylindrical protrusion formed in a cylindrical shape so that the fitting portion formed on the opposite surface side of the cylindrical end facing member is fitted to the inner peripheral surface on the end portion side of the support cylinder. 5. The travel rotating body support device according to claim 4, wherein the projecting end of the cylindrical projecting portion is disposed close to the end surface of the seal member on the support cylinder end side .

Images