CN202338573U

CN202338573U - Large-torque transmission coupler

Info

Publication number: CN202338573U
Application number: CN2011204986882U
Authority: CN
Inventors: 曹仙德; 杨斌; 洪志敏
Original assignee: New Jack Sewing Machine Co Ltd
Current assignee: Jack Sewing Machine Co Ltd
Priority date: 2011-12-05
Filing date: 2011-12-05
Publication date: 2012-07-18
Anticipated expiration: 2021-12-05

Abstract

The utility model belongs to the technical field of mechanical transmission parts, and particularly relates to a large-torque transmission coupler. Two groups of thread through holes which are mutually vertical are radially arranged on the side wall of a hollow cylinder; and more than one side planes parallel to the axis are inwards arranged on the inner cylindrical surface of the hollow cylinder. The large-torque transmission coupler is simple in structure and low in cost, is reliably connected with a transmission shaft, can effectively ensure the transmission stability and is applicable to a mechanical transmission connecting mechanism.

Description

A kind of coupling of high pulling torque transmission

Technical field

The utility model belongs to the technical field on the mechanical transmission part, particularly a kind of coupling of high pulling torque transmission.

Background technique

Coupling is that two axles (driving shaft and driven shaft) that are used for connecting in the different institutions make it the mechanical parts of common rotation with transmitting torque, and the kind of coupling has a lot, for example: flanged joint, oldham coupling, elastic coupling flexible coupling, safety coupling, rigid coupling, flexible coupling etc.; Rigid coupling wherein is because it is simple in structure; Low price, steady in load, stabilization of speed; Can guarantee to be joined under the minimum situation of two axis relativity shifts; Multiselect is used rigid coupling, and rigid coupling also has multiple, and wherein a kind of is that the coupling shell body wall of open circles column type is provided with a plurality of screws; The end of two axles that needs are connected is stretched into to screw in the screw in the center hole of coupling and with screw rotating shaft and coupling is located each other; Its deficiency is: because the center hole of coupling is the cylndrical surface, the moment of torsion between two rotating shafts leans on screw and coupling to transmit, and the moment of torsion that screw transmits is less; In case screw gets loose or quilt is twisted off making coupling connect inefficacy, influences normal torque drive.

Summary of the invention

The purpose of the utility model provide a kind of simple in structure, low-cost, be connected reliably with transmission shaft, and can guarantee the coupling of the high pulling torque transmission of transmission stability effectively.

The utility model is achieved in that

A kind of coupling of high pulling torque transmission radially is provided with two groups of orthogonal tapped through holes on the sidewall of hollow cylinder, inwardly be provided with the side plane that parallels to the axis more than on the inner cylindrical surface of described hollow cylinder.

Above-mentioned side plane has one, and a described side plane is arranged on the downside or the right side of the inner cylindrical surface of hollow cylinder, and orthogonal two groups of tapped through holes are separately positioned on the downside and the right side of the sidewall of hollow cylinder.

Above-mentioned side plane has two, and two side planes are arranged on the downside and the right side of the inner cylindrical surface of hollow cylinder respectively mutual vertically, and the sidewall at each place, side is provided with one group of tapped through hole.

Every group of above-mentioned tapped through hole has two respectively, and every group of tapped through hole all is in same the mistake on axis and the plane perpendicular to axis.

One side of the external cylindrical surface of above-mentioned hollow cylinder is provided with the annular boss that hole enlargement forms.

The utility model is compared the outstanding advantage of existing technology:

1, the side plane on the coupling inner cylindrical surface of the utility model cooperates with side plane on the transmission shaft and can realize the transmission than high pulling torque; And screw only plays the effect of coupling being carried out axially locating in rotating shaft; Because screw is stressed less; Screw is difficult for twisting off or because of vibrations get loose, the hollow cylinder of coupling can be delivered to the moment of torsion on the axle on another axle in the same old way even if screw gets loose because of moment of torsion in transmission process, and then makes the moment of torsion transmission of coupling big and reliable; Join strength is high, good stability.

2, the utility model can adopt powder metallurgy sintered moulding, and the precision of product is high, and the waste material that raw material produce is few, cost of production is low, is suitable for to do the rigid coupling use.

Description of drawings

Fig. 1 is the plan view of the utility model in embodiment 1;

Fig. 2 is the sectional view of A-A among Fig. 1;

Fig. 3 is the utility model embodiment 1 a plan view;

Fig. 4 be among Fig. 3 B-B to sectional view;

Fig. 5 is the utility model embodiment 2 a plan view;

Fig. 6 be among Fig. 5 C-C to sectional view;

Fig. 7 is the user mode sectional view of the utility model.

Embodiment

With specific embodiment the utility model is further described below, referring to Fig. 1-7:

Embodiment 1 (like Fig. 1 and 2): a kind of coupling of high pulling torque transmission, on coupling 1 in cylinder right flank 12 are planes, be equipped with two tapped through holes (11a and 11b) at right flank 12 and downside 13; After the side plane of transmission shaft was connected, circumferential rotation can not take place in transmission shaft and coupling, both can realize self-locking; Guarantee to connect again reliable, and can also accurate positioning, behind the screw of screwing on; More effectively the fixed conveyor axle has guaranteed transmission stability, if all be provided with on two transmission shafts the axial limiting boss of coupling or spacing block set etc.; Even if without screw or bolton; In the same old way can transmitting torque, so its Security, reliability are high, transmitting torque is big.

Embodiment 2 (like Fig. 3 and 4): a kind of coupling of high pulling torque transmission, on coupling 1 in cylinder downside 13 are planes, be equipped with two tapped through holes (11a and 11b) at right flank 12 and downside 13; After the side plane of transmission shaft was connected, circumferential rotation can not take place in transmission shaft and coupling, both can realize self-locking; Guarantee to connect again reliable, and can also accurate positioning, behind the screw of screwing on; More effectively the fixed conveyor axle has guaranteed transmission stability.

Embodiment 3 (like Fig. 5,6,7): a kind of coupling of high pulling torque transmission, on coupling 1 in cylinder downside 12 all are planes with right flank 13, be equipped with two tapped through holes (11a and 11b) at right flank 12 and downside 13; After the side plane of transmission shaft 20 was connected, circumferential rotation can not take place with coupling 10 in transmission shaft 20, both can realize self-locking; Guarantee to connect reliable again; Two planes that are connected with owing to transmission shaft 20 and coupling 10 are connected in addition, thereby the location is more accurate, behind the screw 30 of screwing on; Transmission shaft 20 is fixed in the coupling 10 firmly; And screw is difficult for getting loose in transmission process, and then can transmit bigger moment of torsion, has guaranteed transmission stability to a great extent.

In addition, the utility model adopts powder metallurgy sintered moulding, and the product precision of working it out is high; Therefore reduce in assembly error with axle assembling generation; Improved transmission efficiency, and this forming method makes that the waste material of raw-material generation is few, the suitable production in enormous quantities in enormous quantities; Cost of production is low, and manufacturing efficiency is high.

The foregoing description is merely one of preferred embodiment of the utility model; It is not the practical range that limits the utility model with this; So: the equivalence that all shapes according to the utility model, structure, principle are done changes, and all should be covered by within the protection domain of the utility model.

Claims

1. the coupling of a high pulling torque transmission radially is provided with two groups of orthogonal tapped through holes on the sidewall of hollow cylinder, it is characterized in that: inwardly be provided with on the inner cylindrical surface of described hollow cylinder parallel to the axis more than one side plane.

2. the coupling of a kind of high pulling torque transmission according to claim 1; It is characterized in that: described side plane has one; A described side plane is arranged on the downside or the right side of the inner cylindrical surface of hollow cylinder, and orthogonal two groups of tapped through holes are separately positioned on the downside and the right side of the sidewall of hollow cylinder.

3. the coupling of a kind of high pulling torque transmission according to claim 1; It is characterized in that: described side plane has two; Two side planes are arranged on the downside and the right side of the inner cylindrical surface of hollow cylinder respectively mutual vertically, and the sidewall at each place, side is provided with one group of tapped through hole.

4. according to the coupling of each described a kind of high pulling torque transmission of claim 1-3, it is characterized in that: described every group of tapped through hole has two respectively, and every group of tapped through hole all is in same the mistake on axis and the plane perpendicular to axis.

5. according to the coupling of each described a kind of high pulling torque transmission of claim 1-3, it is characterized in that: a side of the external cylindrical surface of described hollow cylinder is provided with the annular boss that hole enlargement forms.