CN201246426Y - Exterior star wheel type loader two-shaft assembly - Google Patents
Exterior star wheel type loader two-shaft assembly Download PDFInfo
- Publication number
- CN201246426Y CN201246426Y CNU2008201032546U CN200820103254U CN201246426Y CN 201246426 Y CN201246426 Y CN 201246426Y CN U2008201032546 U CNU2008201032546 U CN U2008201032546U CN 200820103254 U CN200820103254 U CN 200820103254U CN 201246426 Y CN201246426 Y CN 201246426Y
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- roller
- spring
- shaft assembly
- star wheel
- wheel
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Abstract
The utility model relates to a transmission structure, in particular to a novel structure of a two-shaft assembly of a loader. The two-shaft assembly of an outer star wheel type loader includes an outer ring gear, an overrunning coupler and an input shaft assembly, wherein, the overrunning coupler includes an outer star wheel, a roller, a spring and an inner ring. The outer ring gear is in interference fit with the outer star wheel of the overrunning coupler, and the input shaft assembly is fixed with the inner ring of the overrunning coupler. A plurality of rectangular flutes for preventing the spring from supercompression are formed in the circumferential direction of the inner side surface of the outer star wheel of the overrunning coupler, and the spring adopts a sheet-type waved spring. The utility model has the advantages of reasonable structural design, high work stability, good synchronization, small abrasion, long service, and capabilities of bearing larger torsional force and impact force and running under the conditions of high speed and over loading for a long time.
Description
Technical field
The utility model relates to a kind of driving mechanism, particularly the new structure of loader two axle assemblies.
Background technique
In loader, its speed changer structure is quite important.It should bear the function of speed change, bears huge driving torque again.And two axle assemblies have the characteristics from speed change, because the automatic clutch of the clutch of two axle assemblies, have simplified the speed changing structure of loader, reduce the gear number, can suitably increase bearing capacity again.Therefore, two axle assemblies are quite general in the application of loader.
Two traditional axle assemblies all adopt the star-wheel roller-type overrunning clutch, this free wheel device is in when surmounting state, the speed of star-wheel is greater than outer ring gear, at this moment star-wheel drives the roller high speed rotating, because the roller high speed rotating produces very big centrifugal force and rubs with the interior raceway of outer ring gear, thereby thereby produce very that galling causes losing efficacy greatly because of the change from the locking angle.When free wheel device engagement took place, roller was kept in motion, because the effect of centrifugal force and inertial force can not make roller synchromesh, and the number of engagement is few, caused the free wheel device off-capacity and damaged.So poor synchronization, quick abrasion.And the general wire spring that adopts in the free wheel device, its fatigue resistance is poor, is easy to generate tired deformation and fracture, and causes the early stage damage of free wheel device.
The patent No. 00208643.3 discloses a kind of chute type mono-directional overrun clutch, it is made up of interior ring, outer shroud, packing ring, circlip for hole, roller, spring sheet, along outer ring inner surface circumferencial direction a plurality of pentagonal concave troughs are arranged, groove floor is external, the vertical surface of outer shroud center line, one tilt angle is arranged, make groove floor and interior ring outer surface constitute ascending space length, can install roller.After the assembling, when interior ring motionless, when outer shroud begins to turn clockwise, the skewed slot bottom surface on the outer shroud promptly with interior ring on outer surface wedging roller, ring rotates together in driving, transmitting torque; In case outer shroud stops operating, interior ring side just holds roller and shifts to large space by little space because effect of inertia is rotated further, and removes " wedging " effect, surmounts rotation under the state.But this clutch also has a deficiency, be exactly spring easily because excessive inertia and excess compression, spring loses original restoring force very soon, and the life-span of free wheel device is shortened greatly.
The model utility content
The utility model provides a kind of free wheel device of preventing inner spring overcompression that has exactly for addressing the above problem, energy synchromesh, long-life external star-wheel type loader two axle assemblies that reduce wear.
For achieving the above object, the utility model adopts following technological scheme:
External star-wheel type loader two axle assemblies of the present utility model comprise outer ring gear, free wheel device, input shaft assembly.Wherein free wheel device comprises that out star wheel, roller, spring, interior ring constitute.The outer ring gear interference fit is in the out star wheel of free wheel device, and the input shaft assembly is by the interior ring of bolt in free wheel device.
Further, the out star wheel inner surface of described free wheel device along the circumferential direction is provided with a plurality of rectangular recess, and the open place of rectangular recess extends to a roller slot of placing roller, and the roller slot end is a semi-circle, is an inclined-plane with the roller contacting side on the roller slot; Spring is positioned in the rectangular recess, and roller is positioned in the roller slot.
Further, described spring is a chip wave-like type spring.
Further, the alloy inlayed for the dovetail grooved of described inclined-plane.
Further detailed, the quantity of described groove, roller slot and roller is 18, along the circumferential direction is equally spaced in the out star wheel inner surface.The roller external diameter that matches with roller slot is 13mm, and long is 32mm.
The utility model adopts technique scheme, so have following advantage:
1, synchronism is good, wearing and tearing are little.When the free wheel device of loader two axle assemblies is in when surmounting state, interior ring speed is greater than out star wheel, and at this moment roller is still under centrifugal action on the out star wheel alloy inclined-plane relatively, and roller and the wearing and tearing of interior ring are very little.When engagement took place, because roller is still on the out star wheel alloy inclined-plane relatively, centrifugal force and inertial force did not constitute influence to engagement, so can synchromesh.
2, the life-span of free wheel device is long.Because the design of rectangular recess is arranged, be used to place spring, rectangular recess is less than the roller external diameter, so spring can not shortened the life-span by excess compression.And replace wire spring with chip wave-like type spring, its fatigue resistance is higher.
3, the out star wheel inclined-plane adopts the mode that dovetail groove is inlayed alloy, improves abrasive resistance, further prolongs free wheel device working life, also reduces cost simultaneously.
4, the quantity of roller is 18, and external diameter is 13mm, and long is 32mm, and it bears moment of torsion and reaches 10000Nm, and working life was above 6000 hours.
Description of drawings
In conjunction with the accompanying drawings the utility model is further specified.
Fig. 1 the utility model structural representation;
Fig. 2 the utility model partial structurtes enlarged diagram.
Embodiment
As shown in Figure 1,1 outer ring gear for output, 2 is out star wheel, and 3 is spring, and 4 is the inclined-plane, and 5 is roller, and 6 is interior ring, and 7 is the input shaft assembly, and 8 is pad, 9 is check ring.
As shown in Figure 2, out star wheel 2 inner surfaces of described free wheel device along the circumferential direction are provided with a plurality of rectangular recess, the open place of rectangular recess extends to a roller slot of placing roller 5, and the roller slot end is a semi-circle, is an inclined-plane 4 with roller 5 contacting sides on the roller slot; Spring 3 is positioned in the rectangular recess, and roller 5 is positioned in the roller slot, with the inclined-plane 4 and the interior ring 6 formation angles of wedge of out star wheel 2.
As shown in Figure 2, because the design of rectangular recess is arranged, be used to place spring, rectangular recess is less than the roller external diameter, and when roller 5 pressure springs 3, it is compressed to the rectangular recess opening and locates just can't continue to move, so spring can not shortened the life-span by excess compression.
Outer ring gear 1 interference fit is installed on outside the out star wheel 2 of free wheel device, and in the interior ring 6 of free wheel device, ring 6 was concentric with output outer ring gear 1 in input shaft assembly 7 was guaranteed by bearings with outer ring gear 1 by bolted on connection for input shaft assembly 7.Roller 5 is axially by two ends pad 8 and check ring 9 location.
Further, described spring 3 is a chip wave-like type spring.Its fatigue resistance is higher than common wire spring fatigue resistance.
Further, the alloy inlayed for the dovetail grooved of described inclined-plane.So, can improve abrasive resistance, further prolong free wheel device working life, also reduce cost simultaneously.
When loader two axle assemblies of the present utility model are worked, input shaft assembly 7 clockwise rotates, in the moment that just begins to rotate, the roller 5 narrower end in wedge slot that just under the effect of frictional force and spring force, is stuck, so interior ring 6 is interconnected into an integral body with out star wheel 2, can not relatively rotate, this moment, mono-directional overrun clutch was in lockup state, and the outer ring gear 1 that is connected with out star wheel 2 is fixed or is linked to be an integral body with the element that is connected with interior ring 6.When counterclockwise rotating, roller 5 overcomes the elastic force of spring 3 under the effect of frictional force, roll a end to the wedge slot broad, skidding occurs, out star wheel 2 can be as freely trackslipping with respect to interior ring 6, and mono-directional overrun clutch broke away from locking and was in free state this moment.The locking direction of mono-directional overrun clutch depends on the direction of wedge slot on the outer shroud.
As shown in Figure 1, the quantity of the groove in the preferred forms of the present utility model, roller slot and roller is 18, along the circumferential direction is equally spaced in the out star wheel inner surface.The roller external diameter that matches with roller slot is 13mm, and long is 32mm.It bears moment of torsion and reaches 10000Nm, and working life was above 6000 hours.
Claims (6)
1, external star-wheel type loader two axle assemblies comprise outer ring gear, free wheel device, input shaft assembly, and free wheel device comprises out star wheel, roller, spring, interior ring; It is characterized in that: the outer ring gear interference fit is in the out star wheel of free wheel device; The input shaft assembly is fixed in the interior ring of free wheel device.
2, external star-wheel type loader two axle assemblies as claimed in claim 1, it is characterized in that: the out star wheel inner surface of described free wheel device along the circumferential direction is provided with a plurality of rectangular recess, the open place of rectangular recess extends to the roller slot of a placement roller, the roller slot end is a semi-circle, is an inclined-plane with the roller contacting side on the roller slot; Spring is positioned in the rectangular recess, and roller is positioned in the roller slot.
3, external star-wheel type loader two axle assemblies as claimed in claim 2 is characterized in that: described spring is a chip wave-like type spring.
4, external star-wheel type loader two axle assemblies as claimed in claim 2 is characterized in that: the alloy that described inclined-plane is inlayed for the dovetail grooved.
5, external star-wheel type loader two axle assemblies as claimed in claim 2, it is characterized in that: the quantity of described groove, roller slot and roller is 18, along the circumferential direction is equally spaced in the out star wheel inner surface.
6, external star-wheel type loader two axle assemblies as claimed in claim 5, it is characterized in that: the roller external diameter is 13mm, long is 32mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201032546U CN201246426Y (en) | 2008-07-29 | 2008-07-29 | Exterior star wheel type loader two-shaft assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201032546U CN201246426Y (en) | 2008-07-29 | 2008-07-29 | Exterior star wheel type loader two-shaft assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201246426Y true CN201246426Y (en) | 2009-05-27 |
Family
ID=40730248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201032546U Expired - Fee Related CN201246426Y (en) | 2008-07-29 | 2008-07-29 | Exterior star wheel type loader two-shaft assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201246426Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628482A (en) * | 2012-04-19 | 2012-08-08 | 无锡江南奕帆电力传动科技股份有限公司 | One-way overrunning clutch |
| CN102661337A (en) * | 2012-05-07 | 2012-09-12 | 吉林大学 | Overrunning clutch for confluence mechanism of double-turbine hydraulic torque converter |
-
2008
- 2008-07-29 CN CNU2008201032546U patent/CN201246426Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628482A (en) * | 2012-04-19 | 2012-08-08 | 无锡江南奕帆电力传动科技股份有限公司 | One-way overrunning clutch |
| CN102661337A (en) * | 2012-05-07 | 2012-09-12 | 吉林大学 | Overrunning clutch for confluence mechanism of double-turbine hydraulic torque converter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090527 |