CN203098597U - Change gear connecting structure capable of effectively alleviating wear - Google Patents
Change gear connecting structure capable of effectively alleviating wear Download PDFInfo
- Publication number
- CN203098597U CN203098597U CN 201320025939 CN201320025939U CN203098597U CN 203098597 U CN203098597 U CN 203098597U CN 201320025939 CN201320025939 CN 201320025939 CN 201320025939 U CN201320025939 U CN 201320025939U CN 203098597 U CN203098597 U CN 203098597U
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- CN
- China
- Prior art keywords
- change gear
- bearing
- needle bearing
- effectively reduce
- linkage structure
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model discloses a change gear connecting structure capable of effectively alleviating the wear, relating to the connection between a spline sleeve and a change gear shaft. A bearing inner ring provided with a needle roller bearing is sheathed on the change gear shaft, a bearing outer ring of the needle roller bearing is arranged on a spline sleeve inner ring so as to be matched for working. According to the change gear connecting structure, the needle roller bearing is adopted for replacing the original cast iron lining, the rolling friction structure replaces the sliding friction structure, wear between the change gear shaft and the bearing can be reduced, and the repair frequency can be decreased; a spacer ring is arranged between the two needle roller bearings and provided with a through oil hole which is communicated with radial clearance holes of the needle roller bearings, so that the lubrication of the bearings through external oil feeding can be realized; lubricating grease is sprayed in the bearings in assembling, thus improving the lubrication effect; and a seal ring is arranged between a locking nut and a bearing outer ring, thus reducing the leakage of the lubricant. The change gear is simple in structure, simple and convenient to connect, and low in implementation cost, the materials can be saved, the maintenance cost and the production cost can be lowered, and the economical benefits can be increased.
Description
Technical field
The utility model belongs to the turning field of mechanical technique, be specifically related to a kind of simple in structure, connect easyly, can effectively reduce the change gear linkage structure of wearing and tearing.
Background technique
The change gear box of lathe connects shaft transmission and feed gearbox, is provided with forward and reverse gear mechanism and change gear plate in the case.Forward and reverse by handle control with turning left and right sides screw thread.Generally speaking, the gear of the different numbers of teeth in the collocation change gear box to obtain the different amount of feed, by changing velocity ratio, is adjusted rotating speed and feed ratio, goes out different public affairs, inch screw thread with car.The prior art change gear plate, gear A, gear B and spline housing are connected to integral body by spline, and cast iron liners is connected with the spline housing interference fit, and it is big to connect stress, and is Spielpassung between cast iron liners and the change gear axle, and the gap is big, and wearing and tearing are big.In real work, the operator forgets oily unavoidably, lining is very easily damaged even scraps, and causes frequent maintenance, replacing, and influence is produced, and has not only increased workman's workload, the increase that has also brought cost of production to enterprise simultaneously.For this reason, develop and a kind ofly can effectively reduce wearing and tearing, can save material again simultaneously, the change gear linkage structure that reduces production costs is the key that addresses this problem.
The model utility content
It is a kind of simple in structure that the purpose of this utility model is to provide, and connects easyly, and implementation cost is cheap, can effectively reduce the change gear linkage structure of wearing and tearing.
The purpose of this utility model is achieved in that and relates to being connected between spline housing and the change gear axle that be arranged with the bearing inner race of needle bearing on the described change gear axle, the bearing outer ring of described needle bearing is arranged on the spline housing inner ring, the cooperation of working each other.
The utility model adopts two cast iron liners in the light-duty needle bearings replacement original structure, and the structure with rolling friction replacement sliding friction has reduced the wearing and tearing between change gear axle and the bearing, reduces repair rate greatly; Between two needle bearings, spacer ring is set, establishes the connection oilhole on the spacer ring and be communicated with, realize the oily bearing of outside lubricating cup with roller bearing needle gap radial hole; And when the assembling needle bearing, in bearing, be coated with lubricating grease, greatly improve lubrication effect, can stop the maintenance that improper damage causes basically.Between locking nut and bearing outer ring, seal ring is set, reduces the oil leak phenomenon.The utility model is simple in structure, connects easyly, and implementation cost is cheap, has saved material, has reduced maintenance cost and cost of production, has improved economic benefit.
Description of drawings
Fig. 1 is the utility model overall structure cross-sectional schematic;
Fig. 2 is a prior art overall structure cross-sectional schematic;
Among the figure: 1-elasticity spring bolt, 2-main shaft, 3-shifting slide gear, 4-gear A, 5-gear B, 6-Cock screw, 7-lubricating cup, 8-spline housing, 9-locking nut, 10-change gear axle, 11-cast iron liners, 12-bearing outer ring, 13-needle bearing, 14-bearing inner race, 15-spacer ring.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described, but never in any form the utility model is limited, any conversion or replacement based on the utility model training centre is done all belong to protection domain of the present utility model.
As shown in Figure 1, 2, the utility model relates to being connected between spline housing 8 and the change gear axle 10, be arranged with the bearing inner race 14 of needle bearing 13 on the described change gear axle 10, the bearing outer ring 12 of described needle bearing 13 is arranged on spline housing 8 inner rings, the cooperation of working each other.
The bearing inner race 14 of described needle bearing 13 is connected with change gear axle 10 interference fit.
The bearing outer ring 12 of described needle bearing 13 is connected with spline housing 8 Spielpassung.
Described needle bearing 13 comprises needle bearing A and needle bearing B, and the two is listed in change gear axle 10 shoulder right sides, is connected with spline housing 8.
Be provided with spacer ring 15 between described needle bearing A and the needle bearing B, spacer ring 15 is provided with the radial hole that is communicated with oilhole and needle bearing 13 needle roller gaps.
Described needle bearing 13 roller lengths are 3 ~ 10 times of its diameter, and diameter is not more than 5mm.
Bearing outer ring 12 left ends of described needle bearing 13 are butted on change gear axle 10 shaft shoulders mutually, and right-hand member is by locking nut 9, and locking cooperates.
Described change gear axle 10 is provided with the needle roller gap radial direction oil hole that lubricating cup 7 is communicated with oil hole and needle bearing 13.
Between the bearing outer ring 12 of described locking nut 9 and needle bearing 13 seal ring is set.
The utility model working principle and working procedure:
The cast iron liners 11 that the utility model adopts two light-duty needle bearings 13 to replace in the original structure, the structure with rolling friction replacement sliding friction has reduced the wearing and tearing between change gear axle 10 and the bearing 13, reduces repair rate greatly; Spacer ring 15 is set between two needle bearings 13, spacer ring 15 is provided with the needle roller gap radial hole that is communicated with oilhole and needle bearing 13, by past 7 li lubricating oil fillings of lubricating cup, can be by being communicated with the direct lubricating bearings 13 of oil pipe, and when assembling needle bearing 13, in bearing, be coated with lubricating grease, greatly improve lubrication effect; Between locking nut 9 and bearing outer ring 12, seal ring is set, reduces the oil leak phenomenon.The utility model connects than the lining of prior art, reduces rate of fault, even the operator forgets oiling, also can guarantee the good use more than 1 year, has almost stopped the maintenance that improper damage causes, and has effectively guaranteed the manufacture cycle to have improved economic benefit.
Claims (9)
1. change gear linkage structure that can effectively reduce wearing and tearing, relate to being connected between spline housing (8) and the change gear axle (10), it is characterized in that: the bearing inner race (14) that is arranged with needle bearing (13) on the described change gear axle (10), the bearing outer ring (12) of described needle bearing (13) is arranged on spline housing (8) inner ring, the cooperation of working each other.
2. the change gear linkage structure that can effectively reduce wearing and tearing according to claim 1 and 2 is characterized in that: the bearing inner race (14) of described needle bearing (13) and change gear axle (10) interference fit.
3. the change gear linkage structure that can effectively reduce wearing and tearing according to claim 1 is characterized in that: the bearing outer ring (12) of described needle bearing (13) and spline housing (8) Spielpassung.
4. the change gear linkage structure that can effectively reduce wearing and tearing according to claim 1, it is characterized in that: described needle bearing (13) comprises needle bearing A and needle bearing B, the two is listed in change gear axle (10) shoulder right side, is connected with spline housing (8).
5. the change gear linkage structure that can effectively reduce wearing and tearing according to claim 4, it is characterized in that: be provided with spacer ring (15) between described needle bearing A and the needle bearing B, spacer ring (15) is provided with the radial hole that is communicated with oilhole and needle bearing (13) needle roller gap.
6. the change gear linkage structure that can effectively reduce wearing and tearing according to claim 1 is characterized in that: described needle bearing (13) roller length is 3 ~ 10 times of its diameter, and diameter is not more than 5mm.
7. the change gear linkage structure that can effectively reduce wearing and tearing according to claim 1 is characterized in that: bearing outer ring (12) left end of described needle bearing (13) is butted on change gear axle (10) shaft shoulder mutually, and right-hand member cooperates by locking nut (9) locking.
8. the change gear linkage structure that can effectively reduce wearing and tearing according to claim 1 is characterized in that: described change gear axle (10) is provided with the needle roller gap radial direction oil hole that lubricating cup (7) is communicated with oil hole and needle bearing (13).
9. the change gear linkage structure that can effectively reduce wearing and tearing according to claim 7 is characterized in that: between the bearing outer ring (12) of described locking nut (9) and needle bearing (13) seal ring is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320025939 CN203098597U (en) | 2013-01-18 | 2013-01-18 | Change gear connecting structure capable of effectively alleviating wear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320025939 CN203098597U (en) | 2013-01-18 | 2013-01-18 | Change gear connecting structure capable of effectively alleviating wear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203098597U true CN203098597U (en) | 2013-07-31 |
Family
ID=48850002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320025939 Expired - Fee Related CN203098597U (en) | 2013-01-18 | 2013-01-18 | Change gear connecting structure capable of effectively alleviating wear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203098597U (en) |
-
2013
- 2013-01-18 CN CN 201320025939 patent/CN203098597U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20170118 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |