CN216519504U

CN216519504U - Axial positioning device for transmission shaft

Info

Publication number: CN216519504U
Application number: CN202123384102.2U
Authority: CN
Inventors: 姚建辉; 洪卫华
Original assignee: Jinchen Machinery Co ltd
Current assignee: Jinchen Machinery Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-05-13
Anticipated expiration: 2031-12-29

Abstract

The axial positioning device for the transmission shaft belongs to the field of mechanical positioning, is connected between the transmission shaft and a rack body, two ends of the transmission shaft are respectively and rotatably arranged on the rack body and comprise a disc and an end cover, the disc and the end cover are arranged on the outer side of the rack body, the disc and the end cover are sequentially arranged along the direction gradually away from the rack body, and an accommodating cavity is formed between the disc and the end cover; the positioning ring is arranged in the accommodating cavity and is connected with the transmission shaft, and the transmission shaft rotates to drive the positioning ring to rotate in the accommodating cavity; the positioning ring is limited in the axial direction by the disc and the end cover, so that the positioning of the transmission shaft in the axial direction is realized, and because the positioning ring also rotates along with the transmission shaft, the acting force received by the positioning ring is mostly extrusion force between the disc and the end cover, the positioning of the positioning ring is guaranteed to be reliable by the limitation of the mode, and the phenomena of offside and shaft jumping of the transmission shaft in the axial direction can not occur.

Description

Axial positioning device for transmission shaft

Technical Field

The utility model relates to the field of mechanical positioning, in particular to an axial positioning device for a transmission shaft.

Background

In mechanical drive arrangements, axial positioning of the drive shaft is often used by mounting some components on the drive shaft, securing the components to the drive shaft by means of a round nut and a round nut retaining washer, with the securing component serving as an intermediate component for axial positioning of the drive shaft. However, in the practical application process, because the transmission shaft is continuously rotated, and the round nut is screwed on the transmission shaft, the force of the transmission shaft on the round nut is mainly in the circumferential direction, namely the torque, however, when the round nut is arranged in a loose-proof manner, the round nut is prevented from being subjected to the torque as much as possible, so as to prevent the round nut from moving in the axial direction. However, the locking and positioning of the round nut on the transmission shaft inevitably requires a large torque, so that even if the round nut is locked by the stop washer, the round nut is easy to loosen during the operation of some medium and large mechanical equipment, and the transmission shaft is deviated, and the shaft is shifted; in addition, threads are required to be cut in the locking and positioning mode, so that the strength of the shaft is weakened; therefore, a new positioning device needs to be designed to enhance the axial positioning of the transmission shaft on the basis of ensuring the strength of the shaft and not cutting the shaft.

SUMMERY OF THE UTILITY MODEL

This application is not firm in order to solve the axial positioning of current transmission shaft to lead to the transmission shaft to offside, scurry the problem of axle, the transmission shaft axial positioning device of this application design can also improve the location reliability on the basis of guaranteeing transmission shaft intensity, wherein, the technical scheme of concrete adoption as follows:

the utility model provides a transmission shaft axial positioning device connects between transmission shaft and rack body, and the both ends of transmission shaft rotate respectively and set up in the rack body, and axial positioning device includes:

the disc and the end cover are arranged on the outer side of the rack body and are sequentially arranged along the direction gradually far away from the rack body, and an accommodating cavity is formed between the disc and the end cover;

the holding ring, the holding ring sets up in holding the intracavity and is connected with the transmission shaft, and the transmission shaft rotates and then drives the holding ring and is holding the intracavity and rotate.

Preferably, the transmission shaft is provided with a shaft shoulder, the end face of the shaft shoulder is provided with a positioning hole, one end face of the positioning ring is provided with a positioning pin, and the positioning pin is inserted into the positioning hole to position the positioning ring in the radial direction; or the end surface of the shaft shoulder is provided with a positioning pin, the end surface of the positioning ring is provided with a positioning hole, and the positioning pin is inserted into the positioning hole to position the positioning ring in the radial direction.

Preferably, the difference between the vertical distance between the disc and the end cover in the axial direction and the thickness of the positioning ring in the axial direction is between 0.2mm and 0.5 mm.

Preferably, the disc is provided with a plurality of first connecting holes at intervals along the circumferential direction of the disc, the end cover is provided with a plurality of second connecting holes at intervals along the circumferential direction of the end cover, the rack is provided with a plurality of first threaded holes at intervals along the circumferential direction of the rack, and the first connecting holes, the second connecting holes and the first threaded holes are aligned and are fixed on the rack body through the inner insertion screws.

Preferably, the terminal surface of shaft shoulder is equipped with a plurality of second screw holes along its circumference interval, and the terminal surface of holding ring is equipped with a plurality of third connecting holes along its circumference interval, is equipped with the axle sleeve between end cover and the transmission shaft, and the terminal surface of axle sleeve is equipped with a plurality of clearing holes along its circumference interval, and clearing hole, third connecting hole and second screw hole align and are fixed in the transmission shaft with the holding ring through the bolt.

According to the utility model, the disc and the end cover are arranged on the frame body, the accommodating cavity is reserved between the disc and the end cover, the positioning ring is arranged in the accommodating cavity, and the accommodating cavity is connected with the transmission shaft, so that the rotation of the transmission shaft is not influenced, the positioning ring is limited axially by the disc and the end cover, and further the transmission shaft is positioned axially.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a front view of the retaining ring;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

fig. 4 is an enlarged view at I in fig. 1.

In the figure, the bearing comprises a frame body 1, a transmission shaft 2, a disc 3, a disc 4, an end cover 5, a containing cavity 6, a positioning ring 7, a screw 8, a positioning pin 9, a shaft sleeve 10, a positioning hole 11, a bolt 12 and a third connecting hole.

Detailed Description

In order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings.

In addition, in the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate orientations and positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

As shown in fig. 1-4, the present application is a transmission shaft axial positioning device, which is mainly applied to medium and large-sized mechanical equipment and medium and low speed mechanical transmission mechanisms, and is particularly applicable to transmission shafts with shaft shoulders that are not well arranged. The axial positioning device is connected between the transmission shaft 2 and the frame body 1, two ends of the transmission shaft 2 are respectively and rotatably arranged on the frame body 1, and the rotary arrangement is a traditional mode that the transmission shaft 2 is connected with the frame, namely a sliding bearing connection mode.

The axial positioning of the transmission shaft 2 is realized by the axial positioning device in the application, and particularly, the axial positioning device comprises a disc 3, an end cover 4 and a positioning ring 6. Wherein, disc 3 and end cover 4 are fixed in the outside of frame body 1 to still set gradually along the direction of keeping away from frame body 1 gradually when setting up in the frame outside, have between disc 3 and end cover 4 and hold chamber 5, should hold chamber 5 and be used for installing holding ring 6. Above-mentioned holding ring 6 sets up still to be connected with transmission shaft 2 when holding in chamber 5 for transmission shaft 2 is when rotating, and then drives holding ring 6 and hold the intracavity 5 internal rotation. So neither can influence the rotation of transmission shaft 2, and holding ring 6 is in holding chamber 5, and disc 3 and end cover 4 are spacing to holding ring 6, mainly for along axial extrusion force between holding ring 6 and disc 3, the end cover 4, and the location reliability of utilizing this kind of mode of disc 3 and the spacing holding ring of end cover 4 is high, and can not influence the rotation of transmission shaft 2, especially relatively be applicable to among the drive mechanism for the medium and large-scale equipment along axial direction's sliding connection.

Further, the positioning ring 6 is positioned on the transmission shaft 2 in the radial direction by having a shoulder on the transmission shaft 2, the end surface of the shoulder has a positioning hole 10, where the positioning hole 10 may be a round hole, one end surface of the positioning ring 6 has a positioning pin 8, and the positioning pin 8 is a round pin, and the positioning pin 8 is inserted into the positioning hole 10 to position the positioning ring 6 in the radial direction.

Alternatively, in an alternative embodiment, the positioning pin 8 may be disposed on the end surface of the shaft shoulder, the positioning hole 10 is disposed on the positioning ring 6, and the positioning pin 8 is inserted into the positioning hole 10 to radially position the positioning ring 6 before the positioning ring 6 is connected to the transmission shaft 2.

Further, the difference between the vertical distance between the disc 3 and the end cap 4 in the axial direction and the thickness of the positioning ring 6 in the axial direction is 0.2mm to 0.5mm, which is the installation clearance of the positioning ring 6, and this clearance is the axial displacement movement of the transmission shaft 2, and the axial displacement movement is within the allowable range.

However, in some embodiments, in order to increase the friction resistance of the positioning ring 6, the positioning ring 6 may be made of a copper-clad process or a wear-resistant alloy steel.

Meanwhile, on the basis of the above embodiment, a wear-resistant layer may be further provided on the side surface of the disc 3 close to the positioning ring 6 and the side surface of the end cover 4 close to the positioning ring 6, and the wear-resistant layer may be made of high-chromium alloy.

Further, to disc 3, how the end cover 4 connects on the frame body 1, it is specific that the interval is equipped with a plurality of first connecting holes on disc 3's circumferential direction, can set up threely, four etc., it is relevant with the diameter size of end cover 4 specifically to set up how much of number, end cover 4 is equipped with a plurality of second connecting holes along its circumference interval, the frame is equipped with a plurality of first screw holes along its circumference interval, first connecting hole, second connecting hole and first screw hole align and insert screw 7 through inside with disc 3 with end cover 4 is fixed in frame body 1, a plurality of screws 7 with end cover 4, disc 3 firmly fix on frame body 1, and simultaneously, screw 7 is connected and can also be in the dismantlement of convenient end cover 4 when needing to be changed or finishing holding ring 6, does not need whole big dismantlement, labour saving and time saving.

Further, to being connected between holding ring 6 and transmission shaft 2, it is specific that the terminal surface at the shaft shoulder is equipped with a plurality of second screw holes along its circumference interval, the second screw hole can set up three, four, five etc., the terminal surface of holding ring 6 is equipped with a plurality of third connecting holes 12 along its circumference interval, be equipped with axle sleeve 9 between end cover 4 and the transmission shaft 2, the terminal surface of axle sleeve 9 is equipped with a plurality of clearing holes along its circumference interval, the clearing hole, third connecting hole 12 and second screw hole align and fix holding ring 6 on transmission shaft 2 through bolt 11. By attaching the positioning ring 6 to the drive shaft 2 by means of the bolt 11, the positioning ring 6 can be easily removed when the positioning ring 6 is worn down severely and the worn ring needs to be repaired or replaced.

In use, lubricating oil is injected between the sleeve 9 and the drive shaft 2, where the lubricating oil can gradually flow between the positioning ring 6 and the end cover 4, between the positioning ring 6 and the disc 3 under the action of the rotation of the drive shaft 2, thereby lubricating the contact surface between the positioning ring 6 and the disc 3 and the contact surface between the positioning ring 6 and the end cover 4.

The above-described embodiments should not be construed as limiting the scope of the utility model, and any alternative modifications or alterations to the embodiments of the present invention will be apparent to those skilled in the art.

The present invention is not described in detail, but is known to those skilled in the art.

Claims

1. The utility model provides a transmission shaft axial positioning device, connect in between transmission shaft and the frame body, the both ends of transmission shaft rotate respectively set up in the frame body, its characterized in that, axial positioning device includes:

the holding cavity is arranged in the accommodating cavity and is connected with the transmission shaft, and the transmission shaft rotates to further drive the holding ring to rotate in the accommodating cavity.

2. The axial positioning device for the transmission shaft according to claim 1, wherein the transmission shaft is provided with a shaft shoulder, the end surface of the shaft shoulder is provided with a positioning hole, one end surface of the positioning ring is provided with a positioning pin, and the positioning pin is inserted into the positioning hole to position the positioning ring in the radial direction; or the end surface of the shaft shoulder is provided with a positioning pin, the end surface of the positioning ring is provided with a positioning hole, and the positioning pin is inserted into the positioning hole to radially position the positioning ring.

3. A drive shaft axial positioning device according to claim 1 or 2, wherein the difference between the perpendicular distance of the disc and the end cap in the axial direction and the thickness of the positioning ring in the axial direction is between 0.2mm and 0.5 mm.

4. The axial positioning device for the transmission shaft according to claim 1, wherein the disk is provided with a plurality of first connecting holes at intervals along a circumferential direction thereof, the end cover is provided with a plurality of second connecting holes at intervals along a circumferential direction thereof, the frame is provided with a plurality of first threaded holes at intervals along a circumferential direction thereof, and the first connecting holes, the second connecting holes and the first threaded holes are aligned and the disk and the end cover are fixed to the frame body by internally inserting screws.

5. The axial positioning device for the transmission shaft according to claim 2, wherein the end face of the shoulder is provided with a plurality of second threaded holes at intervals along the circumferential direction thereof, the end face of the positioning ring is provided with a plurality of third connecting holes at intervals along the circumferential direction thereof, a shaft sleeve is arranged between the end cover and the transmission shaft, the end face of the shaft sleeve is provided with a plurality of passing holes at intervals along the circumferential direction thereof, and the passing holes, the third connecting holes and the second threaded holes are aligned and the positioning ring is fixed to the transmission shaft by bolts.