CN102141071B

CN102141071B - Heavy loading shaft push device for hole

Info

Publication number: CN102141071B
Application number: CN 201110086302
Authority: CN
Inventors: 汤克平; 汪长青
Original assignee: Hangzhou Advance Gearbox Group Co Ltd
Current assignee: Hangzhou Advance Gearbox Group Co Ltd
Priority date: 2011-04-07
Filing date: 2011-04-07
Publication date: 2012-10-03
Anticipated expiration: 2031-04-07
Also published as: CN102141071A

Abstract

The invention discloses a heavy loading shaft push device for a hole. The device comprises a push shaft which is arranged in an outer shaft; a bearing push plate which is fixed on the inner wall of the outer shaft is radially (axially) arranged on the shaft end of the push shaft; at least two shearing push plates which are radially embedded into a groove of the inner wall of the outer shaft are arranged on the outer side of the bearing push plate, and the shearing push plates are fixedly connected with the bearing push plate through bolts; a left shearing push plate and a right shearing push plate are symmetrically and radially embedded into an annular groove of the corresponding inner wall of the outer shaft; and the bolts are uniformly and circumferentially distributed on the outer sides of the shearing push plates and connect the shearing push plates and the bearing push plate. The heavy loading shaft push device has the characteristics of small design limitation and huge bearing and the like, and is easy to process and assemble and works reliably.

Description

The hole pushes away device with the heavy load axle

Technical field

What the present invention relates to is that a kind of axle that can bear huge thrust load pushes away device, especially a kind of being applicable in the very high machinery of heavy duty, reliability requirement, like industries such as boats and ships, metallurgy, wind-powered electricity generations.

Background technique

Traditional mode of pushing away of axially holding mainly contains following two kinds: first kind is that the hole is held with back-up ring and pushed away; See shown in Figure 1; It includes the thrust axis 12 that places in the outer shaft 11; Dispose one at the axle head of this thrust axis 12 and radially be placed in and hold push pedal 13 in the outer shaft 11, this outside of holding push pedal 13 adopts a circlip for hole 14 to be fixed on the inwall of said outer shaft 11.

The working principle that pushes away is held with back-up ring in above-mentioned hole: thrust axis 12 produces axial force P, through holding push pedal 13, again power is passed to circlip for hole 14, and circlip for hole 14 bears the effect of axial shearing force; Circlip for hole 14 in general thickness is little, because excessive thickness will improve its installation difficulty, and circlip for hole 14 is easy to generate situation such as buckling deformation, influences Location accuracy and might be because the risk that inefficacy brings.

Second kind is that the end face follower bolt holds and pushes away; See shown in Figure 2; It also includes the thrust axis 12 that places in the outer shaft 11; Dispose one at the axle head of this thrust axis 12 and radially be placed in and hold push pedal 13 in the outer shaft 11, this arranged outside of holding push pedal 13 has a roof pressure in said shaft end pressure plate 15 of holding on push pedal 13 outer side surfaces, and these hubcap 15 usefulness bolts 16 are fixed on the end face of said outer shaft 11.

Said end face follower bolt holds the working principle that pushes away: thrust axis 12 produces axial force P, through holding push pedal 13, again power is passed to holding on the shaft end pressure plate 15 and pushes away bolt 16; Bolt 16 bears axial force, owing to limited by installing space, bolt 16 sizes and quantity all can be limited to, so that design safety factor is compared circlip for hole is lower; Bolt receives the influence of unbalance loading easily simultaneously, causes single bolt overload, until inefficacy.

Summary of the invention

The objective of the invention is to overcome the deficiency that existing technology exists, and provide a kind of processing and assembling simple, carry hugely, the hole of reliable operation pushes away device with the heavy load axle.

The objective of the invention is to accomplish through following technological scheme; It includes one and places the interior thrust axis of outer shaft; The shaft end of this thrust axis radially (axially) be furnished with one be fixed in the outer shaft inwall the push pedal of holding; The described push pedal outside of holding is mounted with at least two push pedals of cutting that radially are embedded in the outer shaft inner wall trench, and saidly cuts push pedal with bolt and saidly hold push pedal and be connected.

Described cut push pedal have about in the annular groove of two outer shaft inwalls that radially are embedded in said correspondence symmetrically; Described bolt according to circumference uniform distribution on the said outside of cutting push pedal with its with hold push pedal and be connected.

The present invention has following several advantage:

The one, install very simple and conveniently, hold push pedal and do not need special tooling with the installation of cutting push pedal, great strength just can easily be in place part.The installation of bolt is also very convenient.

The 2nd, end is jumped and is prone to guarantee, improves Location accuracy; Hold push pedal and to cut the push pedal accessory size unrestricted, allow thickness big; End face can be used grinding, and distortion situation such as warpage be difficult for to take place.Thereby guaranteeing has very high-class end face run-out, improves the axially locating precision of thrust axis greatly.

The 3rd, axial carrying is high, and safety coefficient is big; The thickness of cutting push pedal that bears axial force can amplify arbitrarily according to design demand; And the shearing safety coefficient of cutting push pedal is proportional with the thickness of cutting push pedal; So compare circlip for hole, the hole is much bigger with the safety coefficient that the heavy load axle pushes away device, and work is more reliable.If installing space allows, the thickness of cutting push pedal is enough big, and the end thrust of bearing tens tons is possible fully.

It is little that the present invention has design limitations, and processing and assembling is simple, carry huge, characteristics such as reliable operation.

Description of drawings

Fig. 1 is a kind of structural representation of existing technology.

Fig. 2 is the another kind of structural representation of existing technology.

Fig. 3 is a structural representation of the present invention.

Fig. 4 is the axial arrangement schematic representation of Fig. 3.

Embodiment

To combine below accompanying drawing to the present invention make detailed introduction: Fig. 3, shown in 4; The present invention includes the thrust axis 22 that places in the outer shaft 21; The shaft end of this thrust axis 22 radially (axially) be furnished with one be fixed in outer shaft 21 inwalls hold push pedal 23; Described push pedal 23 outsides of holding are mounted with at least two and radially are embedded in and cut push pedal 25 in outer shaft 21 inner wall trench 24, and saidly cut push pedal 25 usefulness bolts 26 and saidly hold push pedal 23 and be connected.

Described cut push pedal 23 have about in the annular groove 24 of two outer shaft 21 inwalls that radially are embedded in said correspondence symmetrically; Described bolt 26 according to circumference uniform distribution on the said outside of cutting push pedal 25 with its with hold push pedal 23 and be connected.

Structural principle of the present invention is: thrust axis 22 produces axial force P, through holding push pedal 23, power is passed to cut push pedal 25 again; Cut the end thrust that push pedal 25 bearing thrust axles 22 produce; 26 of the attachment bolts of end face play connection and hold push pedal 23 and cut push pedal 25, do not bear axial force; During installation, pack into earlier and hold push pedal 23, be close to thrust axis 22 axle heads; Radially insert along the inner wall trench 24 of outer shaft 21 again and cut push pedal 25; At last, screw on attachment bolt 26 and packing ring hold push pedal 23 and cut push pedal 25 with connection, and both are fixed by relative position, and promptly intact dress finishes.The present invention also can adopt three or four can be spliced into a circle and embed respectively and cut push pedal 25 in outer shaft 21 inner wall trench 24.

Claims

1. a hole pushes away device with the heavy load axle; It includes one and places the interior thrust axis of outer shaft; The shaft end radial arrangement of this thrust axis have one be fixed in the outer shaft inwall the push pedal of holding; It is characterized in that the described push pedal outside of holding is mounted with at least two push pedals of cutting that radially are embedded in the outer shaft inner wall trench, and saidly cut push pedal with bolt and saidly hold push pedal and be connected.

2. hole according to claim 1 pushes away device with the heavy load axle, it is characterized in that described cut push pedal have about two radially be embedded in symmetrically in the said outer shaft inner wall trench; Described bolt according to circumference uniform distribution on the said outside of cutting push pedal with its with hold push pedal and be connected.