CN201428754Y

CN201428754Y - Flexible coupling shaft device

Info

Publication number: CN201428754Y
Application number: CN2009200471663U
Authority: CN
Inventors: 颜力; 唐亮; 戴如勇; 刘忠伟
Original assignee: CRRC Qishuyan Institute Co Ltd
Current assignee: CRRC Qishuyan Institute Co Ltd
Priority date: 2009-06-30
Filing date: 2009-06-30
Publication date: 2010-03-24
Anticipated expiration: 2019-06-30

Abstract

The utility model relates to a flexible coupling shaft device, belonging to the mechanical transmission technical field. The flexible coupling shaft device consists of a left half component and a right half component that are fixedly connected with each other; the left half component and the right half component are provided with a coaxial central hole, and the adjacent ends of the left half component and the right half component respectively form the flange shape; the end surfaces of flanges at adjacent ends are respectively provided with a front edge groove and a front edge lug that are matched with each other; one end of the left half component that is far away from the right half component is provided with end-surface teeth; the end surfaces of the flanges at the adjacent ends of the left half component and the right half component are respectively provided with a buffering hollow; and the buffering hollows are buckled to form a buffering cavity. The flexible coupling shaft deviceis used for connecting a driving transmission shaft and a motor spindle to transmit the rotation between the driving transmission shaft and the motor spindle, has the characteristics of big torsionalrigidity, good axial and radial buffering, simple structure and the like, and is especially suitable for transmitting torque in the heave-load high-speed rotation.

Description

A kind of flexible hitch bar

Technical field

The utility model relates to a kind of hitch bar, and especially a kind of flexible hitch bar with end face toothing is used to connect initiative drive shaft and electric machine main shaft and rotates to transmit, and belongs to the mechanical transmissioning technology field.

Background technique

Along with the fast development of Chinese national economy, the contradiction of railway transport capacity deficiency highlights day by day.In recent decades, the main body developing direction of railway traffic shows as passenger traffic speed up, shipping heavy loading.According to the knowledge of the applicant, the type of belt drive that conventional locomotive adopts is that electric machine main shaft directly is connected with driving gear, and this moment, the vibration of motor was directly delivered on the gear.The transmission performance of this driving mode is relatively poor, is difficult to realize the high-speed overload requirement of railway transport.So need develop the hitch bar that a cover can bear high speed, heavy duty, be used to transmit the vibration of the moment of torsion of motor and the electric machine main shaft of decaying.And interchangeability is poor between the dismounting process of existing hitch bar and accessory, and needs bigger axial and radial space, and is for axial and the very nervous high-speed heavy loading locomotive drive system of radial space, obviously inapplicable.

The model utility content

The purpose of this utility model is to solve the problems of the technologies described above, and a kind of flexible hitch bar is provided, and this hitch bar utilizes end face tooth phase embedding carry-over moment, multiple tooth carrying simultaneously, but carry-over moment is big, and axially and radially have certain amount of deflection, compact structure, dismounting is easy.

The purpose of this utility model is achieved through the following technical solutions: a kind of flexible hitch bar with end face toothing is made of a left side half part that is mutually permanently connected and right half part; A described left side half part and right half part are shaped on coaxial center hole, and abutting end forms flange-like respectively; The end face of described abutting end flange is shaped on seam groove and the seam flange that matches respectively; The end that a described left side half part deviates from right half part is shaped on the end face tooth; The end face of flange of a described left side half part and right half part abutting end is shaped on the buffering depression respectively, and described buffering depression is combined to form buffer cavity.

It is that the end cylindrical that the described right side half part deviates from left half part has tapering that the utility model further improves.During assembling, right-hand member cone hot jacket is gone into electric machine main shaft, and left end end face tooth is also tight by a long bolt and the driving gear with identical end face toothing, thereby realizes required shaft coupling transmission.

The utility model further improves, and the end face of flange of a described left side half part and right half part abutting end is shaped on the buffering depression respectively, is used to provide axially and amount of deflection radially.

The utility model is used to connect initiative drive shaft and electric machine main shaft to transmit its rotation each other, and it is big to have torsional stiffness, and axially, radially cushion, characteristics such as simple in structure are particluarly suitable for transmitting torque in the heavily loaded high speed rotating.

Description of drawings

Below in conjunction with accompanying drawing technical solutions of the utility model are described further:

Fig. 1 is an embodiment's of the utility model a structural representation.

Fig. 2 is a left side half part structural representation of Fig. 1 hitch bar.

Fig. 3 is the right side half part structural representation of Fig. 1 hitch bar.

Fig. 4 is the end face toothing schematic representation of Fig. 1 hitch bar.

Fig. 5 is the A-A sectional view of Fig. 4.

Fig. 6 is the tooth of face unfolded drawing of Fig. 1 hitch bar.

Embodiment

The hitch bar of a present embodiment left side half part, 6 structures as shown in Figure 2, the center has axis hole, an end (left end) that deviates from right half part is shaped on end face tooth 1.Right-hand member is a flange end, and end face of flange has buffering depression 2, and the periphery of this die cavity forms the seam groove.Right half part 7 as shown in Figure 3, the center also has axis hole, left end is a flange end, end face of flange has buffering depression 3, and be provided with left half part 6 on the seam flange 5 that matches of seam groove, right-hand member cylindrical 4 has required tapering.During combination, embed the seam groove, make left and right half part coaxial positioning, with electron beam a hitch bar left side half part 6 and right half part 7 are welded into an integral body afterwards, as shown in Figure 1 by the seam flange.

During welding, the whole fitting surface that must guarantee a hitch bar left side half part 6 and right half part 7 all has weld seam, and guarantee that a postwelding hitch bar left side half part 6 and right half part, 7 axis hole end faces have predetermined buffer gap L, the buffering depression 2 and 3 of left half part 6 and right half part, 7 end face of flange is combined to form buffer cavity 8.Be shaped on the oil hole 9 that is used to dismantle on right half part 7.

Fig. 4 is the end face toothing schematic representation of left half part, and as seen from the figure, all tooth bars are evenly distributed on end face, and the teeth groove of end face tooth has inclination angle D shown in Figure 5, and it is trapezoidal that the cross section is, and profile of tooth is launched referring to Fig. 6.When having the end face tooth phase embedding at inclination angle, produce the power of pointing to tooth axle center, make this hitch bar have the performance of automatic centering.Profile of tooth unfolded drawing such as Fig. 6 of the utility model hitch bar end face tooth.

The beneficial effect of present embodiment is mainly reflected in:

1, simple in structure, compact, the reliability height, and it is little to take up room;

2, assembling is easy, and traditional hitch bar is generally several parts and is assembled, and hitch bar of the present utility model then is the integrated type hitch bar;

3, the transmission torsional moment is big, axially and radially has big amount of deflection;

4, end face tooth phase embedding transmitting torque has the advantage of automatic centering.

In addition to the implementation, the utility model can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.

Claims

1. a flexible hitch bar is characterized in that: be made of a left side half part that is connected mutually and right half part; A described left side half part and right half part are shaped on coaxial center hole, and abutting end forms flange-like respectively; The end face of described abutting end flange is shaped on seam groove and the seam flange that matches respectively; The end that a described left side half part deviates from right half part is shaped on the end face tooth; The end face of flange of a described left side half part and right half part abutting end is shaped on the buffering depression respectively, and described buffering depression is combined to form buffer cavity.

2. flexible hitch bar according to claim 1 is characterized in that: the end cylindrical that the described right side half part deviates from left half part has tapering.

3. flexible hitch bar according to claim 2 is characterized in that: a described left side half part and the welding of right half part are connected, and whole fitting surface all has weld seam, and the axis hole end face of a welding back described left side half part and right half part has predetermined buffer gap.

4. according to the described flexible hitch bar of claim 3, it is characterized in that: be shaped on the oil hole that is used to dismantle on half part of the described right side.

5. according to the described flexible hitch bar of claim 4, it is characterized in that: the teeth groove of described end face tooth has the inclination angle, and it is trapezoidal that the cross section is.