CN220809598U - Connecting structure for crawler-type vehicle walking frame and main shaft - Google Patents
Connecting structure for crawler-type vehicle walking frame and main shaft Download PDFInfo
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- CN220809598U CN220809598U CN202322832575.7U CN202322832575U CN220809598U CN 220809598 U CN220809598 U CN 220809598U CN 202322832575 U CN202322832575 U CN 202322832575U CN 220809598 U CN220809598 U CN 220809598U
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- main shaft
- bearing
- limiting
- split nut
- hole
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- 125000006850 spacer group Chemical group 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
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Abstract
The utility model relates to a connecting structure of a crawler-type vehicle walking frame and a main shaft, which comprises a walking frame, a main shaft, a first bearing, an opening nut and a limiting pin, wherein the inner ring of the first bearing is connected with the main shaft, the outer ring of the first bearing is connected with the inner wall of the walking frame, one end surface of the first bearing is propped against the side wall of a first annular convex part of the inner wall of the walking frame, a threaded hole is axially penetrated through the opening nut, at least five first limiting holes are circumferentially and equidistantly distributed on the side wall of the opening nut, each first limiting hole radially penetrates through the opening nut along the opening nut, at least one opening is formed on the side wall of the opening nut and is communicated with the threaded hole, a second limiting hole is radially arranged on the main shaft, the opening nut is in threaded connection with one end of the main shaft and props against the inner ring of the other end surface of the first bearing, and the limiting pin is inserted into one of the first limiting holes and the second limiting holes; the technical problem that in the prior art, the fixing of a bearing in a connecting structure of a walking frame and a main shaft is unstable, and the position of the bearing is easy to deviate is solved.
Description
Technical Field
The utility model relates to the technical field of tracked vehicles, in particular to a connecting structure of a walking frame and a main shaft of a tracked vehicle.
Background
The triangular crawler wheel is a mechanical structure for replacing tires, can ensure that a vehicle runs on special roads such as sand, ice and snow, mud, wading and the like, can also be used on exploration machines for deep sea operation, ensures the normal running of the exploration machines, and is widely applied to crawler vehicles. The triangular crawler belt on the market at present comprises crawler belts, a walking frame, driving wheels and other gear trains, wherein the gear trains of a thrust wheel, a guiding wheel and the like are connected to the bottom end of the walking frame, and a main shaft is connected to the top end of the walking frame. The main shaft is rotatably connected with the walking frame through two tapered roller bearings, the inner wall of the walking frame is provided with a ring convex part, one bearing inner ring is connected with the main shaft, the outer ring is connected with the inner wall of the walking frame, one end face of the bearing abuts against the side wall of the ring convex part, the other end face of the bearing is fixed through a stop washer and a round nut, the inner teeth of the stop washer are clamped into the groove of the main shaft, after the round nut is in threaded connection with the main shaft, the outer teeth of the stop washer are clamped into the groove of the round nut, and the stop washer abuts against the inner ring of the end face of the other end of the bearing, so that the bearing is fixed. However, when the round nut pushes the lock washer against the bearing, the external teeth of the lock washer do not necessarily align exactly with the grooves of the round nut, and in this case, in order to enable the lock washer external teeth to be snapped into the grooves, it is necessary to rotate the round nut in the opposite direction, resulting in a loose connection between the lock washer and the bearing; moreover, when a large radial force is applied to the main shaft during operation of the tracked vehicle, the teeth of the stop washer may break and lose the limit on the bearing, resulting in bearing deflection.
Disclosure of utility model
Aiming at the defects of the prior art, the utility model aims to provide a connecting structure of a crawler-type vehicle walking frame and a main shaft, so as to solve the technical problem that the connecting structure of the walking frame and the main shaft in the prior art is unstable in fixing a bearing and easily causes the position deviation of the bearing.
In order to solve the technical problems, the utility model provides a connecting structure of a crawler-type vehicle walking frame and a main shaft, which comprises a walking frame, the main shaft and a first bearing, wherein a first annular convex part is arranged on the inner wall of the walking frame, a first bearing inner ring is connected with the main shaft, a first bearing outer ring is connected with the inner wall of the walking frame, one end face of the first bearing is propped against the side wall of the first annular convex part, the connecting structure also comprises an opening nut and a limiting pin, at least five first limiting holes are axially and penetratingly arranged on the side wall of the opening nut along the axial direction, at least one opening is radially formed on the side wall of the opening nut along the axial direction of the opening nut, the first limiting holes are communicated with the threaded holes, a second limiting hole is radially arranged on the main shaft, the opening nut is in threaded connection with one end of the main shaft and propped against the inner ring of the end face of the other end of the first bearing, and the limiting pin is inserted into one of the first limiting holes and the second limiting holes.
After the structure is adopted, the connecting structure of the crawler-type vehicle running frame and the main shaft has the following advantages: the end face inner ring at the other end of the first bearing is propped against the split nut, the split nut is inserted into the first limiting hole and the second limiting hole by the limiting pin to prevent the split nut from rotating, the first limiting hole is at least five in number, the first limiting hole can be aligned with the second limiting hole after the split nut is fixed on the first bearing, the limiting pin is ensured to be inserted, the split nut is not required to be loosened, the limiting of the first bearing is stable, in addition, in the use process, the limiting pin is not broken even if being subjected to larger radial force, and the stability of fixing the first bearing is greatly improved.
As an improvement, each first limiting hole forms two openings on the side wall of the split nut, the second limiting hole penetrates through the side wall of the main shaft, and two ends of the limiting pin are respectively positioned in two ends of the first limiting hole at two sides of the threaded hole; by adopting the structure, the two ends of the limiting pin are positioned at the two ends of the first limiting hole, so that the stability of connection between the split nut and the main shaft can be further improved, and the stability of limiting the first bearing is also improved.
As an improvement, two second limiting holes are penetrated through the main shaft along the radial direction, and the two second limiting holes are mutually perpendicular and the axes are positioned in the same plane; by adopting the structure, the first limit hole can be aligned with the second limit hole when the split nut is propped against the first bearing.
As an improvement, an annular mounting groove is formed in the outer wall of the split nut along the circumferential direction, a check ring is connected in the mounting groove, and the check ring is positioned on a moving path when the limiting pin is pulled out of the first limiting hole; by adopting the structure, the limiting pin is limited by the check ring, the limiting pin is prevented from falling out of the first limiting hole, and the stability of the connection of the split nut and the main shaft is improved.
As an improvement, each first limiting hole penetrates through the end face of the split nut and is far away from the first bearing; by adopting the structure, when the split nut butts against the first bearing, even if the first limiting hole is not fully aligned with the second limiting hole, the limiting pin can be inserted into the second limiting hole from the first limiting hole as the first limiting hole penetrates through the split nut and is far away from the end face of the first bearing.
As an improvement, an annular groove is formed in the peripheral wall of the main shaft along the circumferential direction, the annular groove is positioned on the outer side of the first bearing, a second annular convex part is connected to the end face, close to the first bearing, of the split nut, and when the split nut is in threaded connection with the main shaft, the second annular convex part abuts against the inner ring of the end face of the other end of the first bearing.
As an improvement, a shaft cover is connected to the end face, close to the first bearing, of the walking frame, and an O-shaped ring is connected between the shaft cover and the walking frame; by adopting the structure, the tightness of the connection between the walking frame and the main shaft is improved, and muddy water is prevented from entering between the walking frame and the main shaft.
As an improvement, a blank cap is connected on the end face of the shaft cap, which is far away from the walking frame.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model.
Fig. 2 is a partial enlarged view of the portion a in fig. 1.
Fig. 3 is a schematic perspective view of a split nut according to the present utility model.
Fig. 4 is a schematic structural view of a limiting pin connecting a spindle and a split nut in the present utility model.
Fig. 5 is an end view of the spindle of the present utility model.
Reference numerals: 1. a walking frame; 2. a main shaft; 3. a first bearing; 4. a first annular protrusion; 5. a split nut; 6. a limiting pin; 7. a threaded hole; 8. a first limiting hole; 9. a second limiting hole; 10. a mounting groove; 11. a retainer ring; 12. an annular groove; 13. a second ring protrusion; 14. a shaft cover; 15. an O-ring; 16. a cover is closed; 17. and a second bearing.
Detailed Description
The following describes a connection structure between a crawler-type vehicle running frame and a main shaft in detail with reference to the accompanying drawings.
As shown in fig. 1 to 5, a connecting structure of a crawler-type vehicle running frame and a main shaft comprises a running frame 1, a main shaft 2 and a first bearing 3, wherein a through hole is formed in the running frame 1 along the circumferential direction, a first annular convex part 4 is formed in the inner wall of the running frame 1, namely, the middle part of the inner wall of the through hole is provided with the first annular convex part 4 integrally formed with the running frame 1, in fig. 1 of the embodiment, only part of the structure of the running frame 1 for being connected with the main shaft 2 is shown, and the whole structure of the running frame 1 is not shown; the inner ring of the first bearing 3 is connected with the main shaft 2, the outer ring of the first bearing 3 is connected with the inner wall of the walking frame 1, one end face of the first bearing 3 abuts against the side wall of the first annular convex part 4, the first bearing 3 is arranged on the right side of the main shaft 2 and is positioned on the right side of the first annular convex part 4, the right side wall of the first annular convex part 4 abuts against the outer ring of the left end face of the first bearing 3, the left side of the main shaft 2 is also provided with a second bearing 17, the second bearing 17 is positioned on the left side of the first annular convex part 4, and the first bearing 3 and the second bearing 17 are tapered roller bearings.
As shown in fig. 1 and 2, the utility model further comprises a split nut 5 and a limiting pin 6, wherein a threaded hole 7 is formed in the split nut 5 in an axial penetrating manner, and the threaded hole 7 and the split nut 5 are coaxially arranged; at least five first limiting holes 8 are circumferentially and equidistantly distributed on the side wall of the split nut 5, each first limiting hole 8 penetrates through the split nut 5 along the radial direction of the split nut 5, at least one opening is formed on the side wall of the split nut 5 and is communicated with the threaded hole 7, the first limiting holes 8 penetrating through the split nut 5 are not particularly limited in that the first limiting holes 8 penetrate through the side walls of the two sides of the split nut 5 through the threaded hole 7, and the first limiting holes 8 only need to penetrate through the split nut 5 to be communicated with the threaded hole 7; the spindle 2 is radially provided with a second limiting hole 9, the split nut 5 is connected to one end of the spindle 2 through a threaded hole 7 in a threaded mode and abuts against the inner ring of the end face of the other end of the first bearing 3, one of the first limiting holes 8 is aligned with the second limiting hole 9, and the limiting pin 6 is inserted into the first limiting hole 8 and the second limiting hole 9.
As shown in fig. 3, each first limiting hole 8 forms two openings on the side wall of the split nut 5, that is, the first limiting hole 8 penetrates through the side walls of the two sides of the split nut 5 through the threaded hole 7, and openings are formed on the side walls of the two sides, so that ten openings of the first limiting holes 8 into which the limiting pin 6 can be inserted are totally formed, and the second limiting holes 9 penetrate through the side wall of the main shaft 2, and when the limiting pin 6 is inserted into the first limiting holes 8 and the second limiting holes 9, as shown in fig. 4, two ends of the limiting pin 6 are respectively positioned in two ends of the first limiting holes 8 at two sides of the threaded hole 7; in addition, two second limiting holes 9 are formed in the spindle 2 in a penetrating manner in the radial direction, the two second limiting holes 9 are mutually perpendicular, and the axes of the two second limiting holes 9 are in the same plane, so that the end face of the spindle 2 is shown in fig. 5, and the first limiting holes 8 are more beneficial to aligning with the second limiting holes 9; as shown in fig. 3, each first limiting hole 8 penetrates through the split nut 5 along the axial direction of the split nut 5 and is far away from the end surface of the first bearing 3, and similarly, each second limiting hole 9 also penetrates through the main shaft 2 along the axial direction of the main shaft 2 and is far away from the end surface of the first bearing 3; in addition, in this embodiment, the cross sections of the first limiting hole 8 and the second limiting hole 9 are rectangular, and the cross section of the limiting pin 6 is also rectangular.
As shown in fig. 3, an annular mounting groove 10 is formed in the outer wall of the split nut 5 along the circumferential direction, a retainer ring 11 is connected in the mounting groove 10, and the retainer ring 11 is positioned on a moving path when the limiting pin 6 is pulled out of the first limiting hole 8; in this embodiment, the split nut 5 includes a hexagonal portion and a cylindrical portion, where the hexagonal portion has a regular hexagon cross section, the cylindrical portion has a circular cross section and a cross section area smaller than that of the hexagonal portion, and the first limiting hole 8 extends from the hexagonal portion to the end surface of the cylindrical portion penetrating the split nut 5, and the mounting groove 10 is disposed on the cylindrical portion, so that after the retainer ring 11 is clamped into the mounting groove 10, the limiting pin 6 can be limited to leave the first limiting hole 8.
As shown in fig. 2, an annular groove 12 is circumferentially arranged on the outer circumferential wall of the main shaft 2, the annular groove 12 is located on the outer side of the first bearing 3, namely, the annular groove 12 is located on the right side of the first bearing 3, a second annular convex part 13 is connected to the end face, close to the first bearing 3, of the split nut 5, when the split nut 5 is in threaded connection with the main shaft 2, the second annular convex part 13 abuts against the inner ring of the end face of the other end of the first bearing 3, specifically, the split nut 5 is in threaded connection with the main shaft 2 at the annular groove 12, and a second limiting hole 9 is also formed in the main shaft 2 at the annular groove 12.
As shown in fig. 1 and 2, a shaft cover 14 is connected to the end surface of the walking frame 1, which is close to the first bearing 3, an O-ring 15 is connected between the shaft cover 14 and the walking frame 1, so as to prevent external muddy water from entering between the walking frame 1 and the main shaft 2, a blank cap 16 is connected to the end surface of the shaft cover 14, which is far away from the walking frame 1, and the shaft cover 14 and the blank cap 16 are sequentially arranged on the right end surface of the walking frame 1 from left to right.
According to the utility model, the split nut 5 is propped against the inner ring of the right end face of the first bearing 3, after rotating in place, one of the first limiting holes 8 is aligned with one of the second limiting holes 9, the limiting pin 6 is inserted into the first limiting holes 8 and the second limiting holes 9 to prevent the split nut 5 from rotating, and at least five first limiting holes 8 can ensure that the first limiting holes 8 can be aligned with the second limiting holes 9 after the split nut 5 is fixed on the first bearing 3, so that the limiting pin 6 can be inserted without loosening the split nut 5, the limiting of the first bearing 3 is stable, and in the using process, the limiting pin 6 is not broken even if being subjected to larger radial force, so that the fixing stability of the first bearing 3 is greatly improved; the first limiting holes 8 in this embodiment are five, and in some other embodiments, the first limiting holes 8 may be provided in six, seven, eight or more.
The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above-described one embodiment, and all other examples obtained by those skilled in the art without making any inventive effort are within the scope of the present utility model.
Claims (8)
1. The utility model provides a crawler-type vehicle walking frame and main shaft connection structure, includes walking frame (1), main shaft (2) and first bearing (3), walking frame (1) inner wall is equipped with first ring protrusion (4), first bearing (3) inner race connection main shaft (2) just first bearing (3) outer lane connection walking frame (1) inner wall, first bearing (3) one end terminal surface with first ring protrusion (4) lateral wall offsets, characterized in that, still include split nut (5) and spacer pin (6), be equipped with screw hole (7) along the axial run through on split nut (5), at least five first spacing hole (8) along circumference equidistance distribution on split nut (5) lateral wall, every first spacing hole (8) all follow split nut (5) radially run through split nut (5) and form an opening and with screw hole (7) intercommunication on split nut (5) lateral wall at least, be equipped with second spacing hole (9) on main shaft (2) radially, split nut (5) are passed through along the axial run through on the side wall and the other end of inner race (3) is in threaded hole (7) is connected with one end terminal surface and the screw hole (3), the limiting pin (6) is inserted into one of the first limiting hole (8) and the second limiting hole (9).
2. The connecting structure of a crawler-type vehicle running frame and a main shaft according to claim 1, wherein each first limiting hole (8) forms two openings on the side wall of the split nut (5), the second limiting hole (9) penetrates through the side wall of the main shaft (2), and two ends of the limiting pin (6) are respectively positioned in two ends of the first limiting hole (8) on two sides of the threaded hole (7).
3. The connecting structure of a crawler-type vehicle running frame and a main shaft according to claim 1 or 2, wherein two second limiting holes (9) are radially and penetratingly arranged on the main shaft (2), and the two second limiting holes (9) are mutually perpendicular and have the same axial line in the same plane.
4. The connecting structure of a crawler-type vehicle running frame and a main shaft according to claim 1 or 2, wherein an annular mounting groove (10) is formed in the outer wall of the split nut (5) along the circumferential direction, a retainer ring (11) is connected in the mounting groove (10), and the retainer ring (11) is located on a moving path when the limiting pin (6) is pulled out of the first limiting hole (8).
5. A crawler-type vehicle running carriage and main shaft connection structure according to claim 1, characterized in that each first limiting hole (8) penetrates through the end face of the split nut (5) and is far away from the first bearing (3).
6. The connecting structure of a crawler-type vehicle running frame and a main shaft according to claim 1, wherein an annular groove (12) is formed in the peripheral wall of the main shaft (2) along the circumferential direction, the annular groove (12) is located on the outer side of the first bearing (3), a second annular convex part (13) is connected to the end face, close to the first bearing (3), of the split nut (5), and when the split nut (5) is in threaded connection with the main shaft (2), the second annular convex part (13) abuts against the inner ring of the end face of the other end of the first bearing (3).
7. The connecting structure of a crawler-type vehicle running frame and a main shaft according to claim 1, wherein a shaft cover (14) is connected to the running frame (1) and near the end face of the first bearing (3), and an O-ring (15) is connected between the shaft cover (14) and the running frame (1).
8. The connecting structure of a crawler-type vehicle running frame and a main shaft according to claim 7, wherein a blank cap (16) is connected to the end surface of the shaft cap (14) away from the running frame (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322832575.7U CN220809598U (en) | 2023-10-23 | 2023-10-23 | Connecting structure for crawler-type vehicle walking frame and main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322832575.7U CN220809598U (en) | 2023-10-23 | 2023-10-23 | Connecting structure for crawler-type vehicle walking frame and main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220809598U true CN220809598U (en) | 2024-04-19 |
Family
ID=90703268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322832575.7U Active CN220809598U (en) | 2023-10-23 | 2023-10-23 | Connecting structure for crawler-type vehicle walking frame and main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220809598U (en) |
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2023
- 2023-10-23 CN CN202322832575.7U patent/CN220809598U/en active Active
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