CN203297580U - Connecting structure - Google Patents

Abstract

The utility model provides a connecting structure which comprises a drive shaft, a driving wheel which can be adjustably sleeved on the periphery of the drive shaft along a radial direction, and a bearing; the connecting structure further comprises a limit nut, wherein the first end of the limit nut is tightly abutted against the bearing, and the second end of the limit nut is axially sleeved on the end plane of the adjustable driving wheel. According to the connecting structure provided by the utility model, the first end of the limit nut is tightly abutted against the inner race end plane of the bearing, and the second end of the limit nut is respectively and rotationally matched with the driving wheel through a kidney slot and a kidney shaft. The connecting structure is simple and compact in structure, realizes the compaction of a bearing inner race, and realizes floating connection between the connecting structure and the drive shaft through the clearance fit of a key while the axial position of the drive shaft is limited.

Description

Linkage structure

Technical field

The utility model relates to the mechanical transmission field, especially, relates to a kind of multi-functional linkage structure.

Background technique

Usually, between two members radial and axial unsteady connection spacing with the bearing inner ring axial compression be two structures of separating.Between two members in the spacing sun gear floating load balancing structure that generally is applied to star or planet device of radial and axial floating connection, as shown in Figure 5, sun gear 6 is enclosed within on transmission shaft and realizes floating by the spline 7 of Spielpassung, and by collar 8, realizes axial limiting.As shown in Figure 6,7, the axial compression of the interior ring of bearing 9 generally axially is tight against by nut 10 or pressing plate 10 '.

In prior art, floating connection limit structure and bearing bore diameter axial compacting structure are two kinds of different structures, do not have integratedly, and Applicable scope is restricted.

The model utility content

The utility model purpose is to provide a kind of novel linkage structure, with floating connection limit structure and bearing bore diameter axial compacting structure in the solution prior art, does not have integrated and technical problem that Applicable scope is limited.

For achieving the above object, the utility model provides a kind of linkage structure, comprises transmission shaft, radially adjustable drive wheel and bearing that is sheathed on the transmission shaft periphery, also comprises stop nut; The first end of stop nut is closely against bearing, and the second end of stop nut axially is sleeved on the end face of adjustable drive wheel.

Further, the second end of stop nut is provided with endoporus, and endoporus is offered kidney slot vertically; The periphery of drive wheel is offered the kidney-shaped axle that is complementary with kidney slot, and the size of kidney slot is greater than the size of kidney-shaped axle.

Further, the inwall of kidney slot is formed by connecting from beginning to end by two sections cambered surfaces and two planes, and cambered surface and plane are oppositely arranged in twos.

Further, two sections cambered surfaces of all causes of kidney-shaped axle and two planes are formed by connecting from beginning to end, and cambered surface and plane are oppositely arranged in twos.

Further, linkage structure also comprises key, and key is connected with the drive wheel Spielpassung.

Further, key is spline.

Further, drive wheel is sun gear.

The utlity model has following beneficial effect: linkage structure of the present utility model, the first end of stop nut are closely against the interior ring end face of bearing, and the second end of stop nut and drive wheel coordinate by the turn-knob of kidney slot and kidney-shaped axle respectively.This is simple in structure, and compactness has realized the bearing inner ring compression, the limited while of the axial position of transmission shaft, also can realize by the Spielpassung of key the floating connection with transmission shaft.

Except purpose described above, feature and advantage, the utility model also has other purpose, feature and advantage.Below with reference to figure, the utility model is described in further detail.

Description of drawings

The accompanying drawing that forms the application's a part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not form improper restriction of the present utility model.In the accompanying drawings:

Fig. 1 is the assembling schematic diagram of the linkage structure of the utility model preferred embodiment;

Fig. 2 is the A-A section enlarged diagram of Fig. 1 of the utility model preferred embodiment;

Fig. 3 is the A-A place generalized section of Fig. 1 of the utility model preferred embodiment;

Fig. 4 is the kidney slot of Fig. 3 of the utility model preferred embodiment and the schematic diagram that kidney-shaped axle turn-knob coordinates;

Fig. 5 is the floating connecting structure schematic diagram of prior art;

Fig. 6 be prior art utilize nut shaft to the structural representation that compresses bearing inner ring; And

Fig. 7 is that the pressing plate that utilizes of prior art compresses the structural representation of bearing inner ring.

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.

Referring to Fig. 1, the utility model provides a kind of linkage structure, comprise transmission shaft, radially adjustable be sheathed on drive wheel 2, the bearing 3 of transmission shaft periphery and be arranged at drive wheel 2 and bearing 3 between stop nut 1; The first end of stop nut 1 is closely against the end face of bearing 3, and the second end of stop nut 1 axially is sleeved on the end face of adjustable drive wheel 2.

Referring to Fig. 2, the first end of stop nut 1 is held level with both hands, and the second end of stop nut 1 is provided with endoporus, and this endoporus is offered kidney slot 10 vertically.

One end of drive wheel 2 is provided with the overhanging shaft part that the diameter of axle inside contracts, periphery at this shaft part forms the kidney-shaped axle 20 that is complementary with kidney slot 10, the cross section of kidney slot 10 and groove depth size are all greater than cross section and the dark size of axle of kidney-shaped axle 20, and kidney-shaped axle 20 can axially be sheathed in kidney slot 10.

Referring to Fig. 3, the inwall of kidney slot 10 is formed by connecting from beginning to end by two sections cambered surfaces and two planes, and this cambered surface and plane are oppositely arranged in twos.Two sections cambered surfaces of all causes of kidney-shaped axle 20 and two planes are formed by connecting from beginning to end, and this cambered surface and plane are oppositely arranged in twos.

Refer again to Fig. 1, linkage structure of the present utility model also comprises key 4, and transmission shaft is connected by key 4 Spielpassung with drive wheel 2, and this gap cooperation makes drive wheel 2 can realize floating on transmission shaft.In the present embodiment, key 4 is spline, and certainly, in other embodiment, key 4 also can be for other forms of drive mechanism, as flat key, and woodruff key, wedge key or tangent key.

, in conjunction with Fig. 4, during assembling, bearing 3 is positioned over the shaft shoulder of transmission shaft, bearing 3 is installed and be resisted against to stop nut 1 in turn, after the Transverse plane of the first end of stop nut 1 is resisted against the interior ring end face of bearing 3, then the several angle of oppositely outwarding winding, the kidney slot 10 of stop nut 1 is away from bearing 3.Drive wheel 2 is installed on transmitting torque on transmission shaft by key 4 Spielpassung, the kidney-shaped axle 20 of drive wheel 2 is towards kidney slot 10, and slide onto gradually vertically in kidney slot 10, again with stop nut 1 turn several angle vertically, make the kidney-shaped axle 20 of the kidney slot 10 of stop nut 1 and drive wheel 2 certain angle that thereupon staggers, the plane of the segmental arc alignment kidney-shaped axle 20 of kidney slot 10.At this moment, stop nut 1 has compressed the interior ring of bearing 3, defines the axial position of drive wheel 2, between drive wheel 2 and transmission shaft and stop nut 1, corresponding gap is arranged simultaneously.In the present embodiment, drive wheel 2 is sun gear, about between kidney slot 10 and kidney-shaped axle 20, turn-knob 90 is spent mutually, the kidney-shaped axle of the kidney slot of stop nut 1 10 and drive wheel 2 20 turn-knobs is coordinated good.The limited while of the axial position of transmission shaft 2, also can realize by the Spielpassung of key 4 floating connection with transmission shaft.

Linkage structure of the present utility model, the first end of stop nut 1 are closely against the interior ring end face of bearing 3, and the second end of stop nut 1 and drive wheel 2 coordinate by the turn-knob of kidney slot 10 and kidney-shaped axle 20 respectively.This is simple in structure, and compactness has realized that the interior ring of bearing 3 compresses, and the limited while of the axial position of transmission shaft 2, also can realize by the Spielpassung of key 4 floating connection with transmission shaft.

The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims (7)

1. a linkage structure, comprise transmission shaft, radially adjustable drive wheel (2) and bearing (3) that is sheathed on described transmission shaft periphery, it is characterized in that, also comprises stop nut (1);

The first end of described stop nut (1) is closely against described bearing (3), and the second end of described stop nut (1) axially is sleeved on the end face of the described drive wheel (2) of the joint that can wither.

2. linkage structure according to claim 1, is characterized in that, the second end of described stop nut (1) is provided with endoporus, and described endoporus is offered kidney slot (10) vertically;

The periphery of described drive wheel (2) is offered the kidney-shaped axle (20) that is complementary with described kidney slot (10), and the size of described kidney slot (10) is greater than the size of described kidney-shaped axle (20).

3. linkage structure according to claim 2, is characterized in that, the inwall of described kidney slot (10) is formed by connecting from beginning to end by two sections cambered surfaces and two planes, and described cambered surface and plane are oppositely arranged in twos.

4. linkage structure according to claim 3, is characterized in that, two sections cambered surfaces of all causes of described kidney-shaped axle (20) and two planes are formed by connecting from beginning to end, and described cambered surface and plane are oppositely arranged in twos.

5. linkage structure according to claim 1, is characterized in that, described linkage structure also comprises key (4), and described key (4) is connected with described drive wheel (2) Spielpassung.

6. linkage structure according to claim 5, is characterized in that, described key (4) is spline.

7. linkage structure according to claim 1, is characterized in that, described drive wheel (2) is sun gear.

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