CN210686742U

CN210686742U - Flexible transmission member

Info

Publication number: CN210686742U
Application number: CN201921679848.6U
Authority: CN
Inventors: 陈武超; 刘渊; 景伟; 谢华银; 魏涛; 邓俊杰; 谢旻; 张萌思; 秦琅; 杨江波; 张宇
Original assignee: Shanghai Marine Diesel Engine Research Institute
Current assignee: 711th Research Institute of CSIC
Priority date: 2019-10-09
Filing date: 2019-10-09
Publication date: 2020-06-05
Anticipated expiration: 2029-10-09

Abstract

A flexible transmission part comprises an input end diaphragm assembly, a transmission shaft and an output end supporting aligning assembly. The input end diaphragm assembly comprises an input end diaphragm seat, a first diaphragm pressing plate, a supporting part and a first elastic diaphragm, the outer sides of the input end diaphragm seat, the supporting part and the first elastic diaphragm are sequentially detachably connected from top to bottom through a plurality of first fasteners, and the inner side of the first diaphragm pressing plate and the inner side of the first elastic diaphragm are sequentially detachably connected with the upper end of the transmission shaft from top to bottom. The output end supporting and aligning assembly comprises an output end diaphragm seat, a second diaphragm pressing plate, a second diaphragm supporting piece, a second elastic diaphragm, an aligning bearing, a bearing outer pressing sleeve and a bearing inner pressing sleeve. The lower extreme of transmission shaft, second diaphragm clamp plate, the inboard and the second diaphragm support piece of second elastic diaphragm are from last to linking to each other of detachably in proper order down, and the outside and the output diaphragm seat of second elastic diaphragm are from last to linking to each other of detachably in proper order down. The utility model discloses light in weight, installation are simple, longe-lived.

Description

Flexible transmission member

Technical Field

The utility model relates to a transmission technology of boats and ships.

Background

In order to meet the requirements of low-speed sailing or leaving a wharf of a ship and improve the flexible maneuverability of the ship, a ship side thrust device is generally required to be used, and a vertical transmission component for transmitting the power of a motor to a rudder propeller is one of key components of a pipeline type side thrust device. In the operation process of the side thruster, the side thruster is often subjected to larger displacement due to the influence of various reasons such as motor vibration, rudder propeller vibration or external impact, and the like, so that larger additional stress is caused, and even the parts are damaged in severe cases.

In order to compensate the displacement of the shafting, the neutral transmission part of the side thrust device usually adopts an all-metal shafting consisting of a metal shaft and crowned tooth couplings at two ends at present. The crowned tooth coupler can perform displacement compensation in the process of transmitting torque, but due to the fact that the weight of the shaft system is large and the installation space is limited, the metal shaft system is difficult to install and high in use and maintenance requirements, and meanwhile due to the fact that the weight of the whole shaft system is large and the whole shaft system is borne by the crowned tooth coupler at the lower end of the vertical transmission component, the crowned tooth coupler is prone to being damaged in the use process.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide a flexible vertical transmission part with light weight, simple installation, long service life and no maintenance.

The embodiment of the utility model provides a flexible transmission part, which comprises an input end diaphragm assembly, a transmission shaft and an output end supporting and aligning assembly; the input end diaphragm assembly comprises an input end diaphragm seat, a first diaphragm pressing plate, a supporting part and a first elastic diaphragm, the input end diaphragm seat is positioned above the first diaphragm pressing plate, the supporting part and the first elastic diaphragm, and the first elastic diaphragm is annular; the input end diaphragm seat, the supporting part and the outer side of the first elastic diaphragm are detachably connected from top to bottom in sequence through a plurality of first fasteners, and the first diaphragm pressing plate, the inner side of the first elastic diaphragm and the upper end of the transmission shaft are detachably connected from top to bottom in sequence through a plurality of second fasteners; the output end supporting and aligning assembly comprises an output end diaphragm seat, a second diaphragm pressing plate, a second diaphragm supporting piece, a second elastic diaphragm, an aligning bearing, a bearing outer pressing sleeve and a bearing inner pressing sleeve, and the second elastic diaphragm is annular; the second diaphragm pressing plate is pressed on the bearing outer pressing sleeve, the second diaphragm pressing plate and the bearing outer pressing sleeve are connected with each other and are fixedly sleeved outside the outer ring of the self-aligning bearing together, and the outer ring moves along with the second diaphragm pressing plate and the bearing outer pressing sleeve simultaneously; the bearing inner pressure sleeve penetrates into an inner ring of the self-aligning bearing, the lower end of the bearing inner pressure sleeve is connected with the output end diaphragm seat, and the inner ring moves along with the bearing inner pressure sleeve and the output end diaphragm seat simultaneously; the lower extreme of transmission shaft, second diaphragm clamp plate, the inboard and the second diaphragm support piece of second elastic diaphragm pass through a plurality of third fasteners from last to linking to each other of detachably in proper order down, and the outside and the output diaphragm seat of second elastic diaphragm pass through a plurality of fourth fasteners from last to detachably in proper order down linking to each other.

The flexible transmission component, wherein the transmission shaft comprises a carbon fiber shaft body, a first metal flange and a second metal flange; two ends of the carbon fiber shaft body are respectively connected with the first metal flange and the second metal flange; the first diaphragm pressing plate, the inner side of the first elastic diaphragm and the first metal flange are detachably connected from top to bottom in sequence through a plurality of second fasteners; the second metal flange, the second membrane pressing plate, the second elastic membrane and the second membrane supporting piece are sequentially detachably connected from top to bottom through a plurality of third fasteners.

The utility model discloses following advantage and characteristics have at least:

1. the flexible transmission part provided by the embodiment of the utility model is formed by combining the transmission shaft, the input end diaphragm assembly and the output end supporting and aligning assembly which are used as the elastic diaphragm coupling, has axial and angular large displacement compensation performance, can meet the functional requirements of a general vertical transmission part, and has the characteristics of light weight, simple installation, long service life and no maintenance;

2. the middle shaft adopts a carbon fiber transmission shaft, so that the weight of the shafting can be further integrally reduced, and the abrasion to the bearing and the gear is reduced, thereby reducing the noise and prolonging the service life of a transmission part;

3. set up a self-aligning bearing in output supports the self-aligning subassembly, this self-aligning bearing not only can play the aligning effect, can bear the weight of transmission shaft and input diaphragm subassembly in addition, avoids the weight of transmission shaft and input diaphragm subassembly in the middle of the vertical drive shafting to use on the output supports the elastic membrane piece in the self-aligning subassembly to reach the purpose that prolongs output support self-aligning subassembly life on the basis that does not influence output support self-aligning subassembly displacement compensation performance.

Drawings

Fig. 1 shows a schematic overall cross-sectional view of a flexible transmission member according to an embodiment of the present invention.

Fig. 2 shows a schematic cross-sectional view of an input end diaphragm assembly according to an embodiment of the present invention.

Fig. 3 shows a schematic cross-sectional view of a transmission shaft according to an embodiment of the invention.

Fig. 4 shows a schematic cross-sectional view of an output end support aligning assembly according to an embodiment of the present invention.

Fig. 5 shows an application example of a flexible transmission member according to an embodiment of the present invention.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Fig. 1 to 4 show a structure of a flexible transmission member according to an embodiment of the present invention. Referring to fig. 1 to 4, a flexible transmission member 100 according to an embodiment of the present invention includes an input end diaphragm assembly 1, a transmission shaft 2, and an output end supporting aligning assembly 3. The input end diaphragm assembly 1, the transmission shaft 2 and the output end supporting aligning assembly 3 are sequentially detachably connected from top to bottom.

The input diaphragm assembly 1 comprises an input diaphragm seat 11, a first diaphragm pressure plate 12, a support member 13 and a first resilient diaphragm 14. The input diaphragm seat 11 is located above the first diaphragm pressing plate 12, the supporting part 13 and the first elastic diaphragm 14, and the first elastic diaphragm 14 is annular. The outer sides of the input end diaphragm seat 11, the supporting part 13 and the first elastic diaphragm 14 are detachably connected from top to bottom in sequence through a plurality of first fasteners 91, and the inner side of the first diaphragm pressing plate 12, the inner side of the first elastic diaphragm 14 and the upper end of the transmission shaft 2 are detachably connected from top to bottom in sequence through a plurality of second fasteners 92.

In the present embodiment, the support member 13 is composed of a plurality of washers 13a, and the plurality of washers 13a are fitted with the plurality of first fastening members 91, respectively, in one-to-one correspondence. Compared with a mode that a large-diameter circular ring is arranged between the input end diaphragm seat 11 and the first elastic diaphragm 14 to serve as a supporting part, the whole weight of the input end diaphragm assembly 1 can be effectively reduced by adopting a plurality of small-diameter gaskets as the supporting part, the weight reduction effect is achieved, and meanwhile, the installation is more convenient.

Further, the input end diaphragm assembly 1 of the present embodiment includes a plurality of press fit assemblies respectively fitted with the plurality of gaskets 13a in a one-to-one correspondence. Each press sleeve assembly includes a shim 151 and a press sleeve 153. The spacer 151 is sandwiched between the washer 13a and the upper surface of the first elastic diaphragm 14; the pressing sleeve 153 includes a barrel portion 1531 and an annular flange 1532 surrounding a bottom end of the barrel portion, an upper end of the barrel portion 1531 passing through the first elastic membrane 14 and extending into the central through hole of the gasket 151. The first fastener 91 passes through the central through hole of the body portion 1531 and presses against the annular flange 1532, causing the annular flange 1532 to abut against the lower surface of the first elastic diaphragm 14.

The output end supporting and aligning assembly comprises an output end diaphragm seat 31, a second diaphragm pressing plate 32, a second diaphragm supporting piece 33, a second elastic diaphragm 34, an aligning bearing 35, a bearing outer pressing sleeve 36 and a bearing inner pressing sleeve 37, and the second elastic diaphragm 34 is annular. The second diaphragm pressing plate 32 presses on the bearing outer pressing sleeve 36, the second diaphragm pressing plate 32 and the bearing outer pressing sleeve 36 are connected with each other and are sleeved outside an outer ring 351 of the self-aligning bearing 35 together, and the outer ring 351 moves simultaneously along with the second diaphragm pressing plate 32 and the bearing outer pressing sleeve 36. The bearing inner pressure sleeve 37 penetrates into the inner ring 352 of the self-aligning bearing 35, the lower end of the bearing inner pressure sleeve 37 is connected with the output end diaphragm seat 31, and the inner ring 352 moves simultaneously along with the bearing inner pressure sleeve 37 and the output end diaphragm seat 31. The lower end of the transmission shaft 2, the second diaphragm pressing plate 32, the inner side of the second elastic diaphragm 34 and the second diaphragm support 33 are detachably connected from top to bottom in sequence through a plurality of third fasteners 93, and the outer side of the second elastic diaphragm 34 and the output diaphragm seat 31 are detachably connected from top to bottom in sequence through a plurality of fourth fasteners 94. Preferably, a washer 98 is also disposed between fourth fastener 94 and second elastomeric diaphragm 34.

In this embodiment, the second diaphragm press plate 32 and the bearing outer press sleeve 36 are removably connected to each other by a plurality of fifth fasteners 95. The bearing inner press sleeve 37 and the output diaphragm mount 31 are detachably connected by a sixth fastener 96. Optionally, the first to sixth fasteners are bolts.

In this embodiment, the second diaphragm support 33 is an annular support plate that surrounds the bearing outer pressure sleeve 36. The second diaphragm pressing plate 32 and the bearing outer pressing sleeve 36 are respectively provided with a first axial limiting portion 321 and a second axial limiting portion 362 for limiting the outer ring 351 of the self-aligning bearing 35 to move along the axial direction, and the upper end face and the lower end face of the outer ring of the self-aligning bearing 35 are respectively abutted against the first axial limiting portion 321 and the second axial limiting portion 362. The bearing inner pressure sleeve 37 and the output end diaphragm seat 31 are respectively provided with a third axial limiting portion 373 and a fourth axial limiting portion 314 for limiting the inner ring 352 of the self-aligning bearing 35 to move in the axial direction, and the inner ring upper end surface and the inner ring lower end surface of the self-aligning bearing 35 are respectively abutted against the third axial limiting portion 373 and the fourth axial limiting portion 314. Optionally, the first axial limiting portion 321, the second axial limiting portion 362, the third axial limiting portion 373, and the fourth axial limiting portion 314 are all stepped surfaces. The outer peripheral face of outer lane 351 and the hole of second diaphragm clamp plate 32 and bearing outer pressure cover 36 between can be clearance fit or interference fit, when the outer peripheral face of outer lane 351 and the hole of second diaphragm clamp plate 32 and bearing outer pressure cover 36 between be clearance fit, rely on the spacing portion of first axial 321 and the spacing portion 362 of second axial to the clamping-force of outer lane 351, can drive outer lane 351 and follow second diaphragm clamp plate 32 and the outer pressure cover 36 of bearing and move together. The inner circumferential surface of the inner ring 352 and the outer circumferential surface of the bearing inner pressure sleeve 37 may be in clearance fit or interference fit, and when the inner circumferential surface of the inner ring 352 and the outer circumferential surface of the bearing inner pressure sleeve 37 are in clearance fit, the inner ring 352 may be driven to move simultaneously along with the bearing inner pressure sleeve 37 and the output end diaphragm seat 31 by virtue of the clamping force of the third axial limiting portion 373 and the fourth axial limiting portion 314 on the inner ring 352.

In the present embodiment, the propeller shaft 2 includes a carbon fiber shaft body 20, a first metal flange 21, and a second metal flange 22. The carbon fiber axle body 20 is connected at both ends thereof to a first metal flange 21 and a second metal flange 22, respectively. The first diaphragm pressing plate 12, the inner side of the first elastic diaphragm 14, and the first metal flange 21 are detachably connected in sequence from top to bottom by a plurality of second fastening members 92. The second metal flange 22, the second diaphragm pressing plate 32, the second elastic diaphragm 34, and the second diaphragm support 33 are detachably connected in sequence from top to bottom by a plurality of third fasteners 93.

Wherein, carbon fiber axle body 20 is by carbon fiber reinforced epoxy through the winding shaping, and the metal flange adopts the shaping of machining process, then connects carbon fiber axle body 20 with first metal flange 21, second metal flange 22 respectively and adopts the cementing or bolted connection mode to obtain transmission shaft 2, because the axle body adopts carbon fiber manufacturing to can effectively alleviate shafting whole weight, improve the corrosion-resistant ability of axle body, realized reducing shafting noise, prolong transmission component life's purpose.

In this embodiment, the self-aligning bearing 35 is a joint bearing. The self-aligning bearing 35 not only can play a role in aligning, but also can bear the weight of the transmission shaft 2 and the input end diaphragm assembly 1, and the weight of the middle transmission shaft of the vertical transmission shaft system and the weight of the input end diaphragm assembly are prevented from acting on the metal diaphragm in the output end supporting self-aligning assembly, so that the purpose of prolonging the service life of the output end supporting self-aligning assembly on the basis of not influencing the displacement compensation performance of the output end supporting self-aligning assembly is achieved.

In this embodiment, the first and second

elastic diaphragms

14, 34 are each comprised of multiple layers of metal diaphragms stacked together. Each layer of metal diaphragm is in a ring shape, and the ring-shaped metal diaphragm is composed of a plurality of fan-shaped metal diaphragms.

Fig. 5 shows an application example of the flexible transmission member according to an embodiment of the present invention, in which the flexible transmission member is applied to a large-scale tug stern lateral pushing device, and the flexible transmission member 100 is connected to a motor 200 and a full-turning rudder propeller 300 of a stern lateral pushing system, respectively. More specifically, the input diaphragm mount 11 is connected to an output shaft sleeve (not shown) of the motor 200 by a bolt, and the output diaphragm mount 31 is connected to a rudder shaft (not shown) of the rudder propeller 300. The carbon fiber transmission shaft has the functions of torque transmission, weight reduction, sound insulation, vibration reduction and the like, and the output end supporting aligning component 3 and the input end diaphragm component 1 have the functions of torque transmission, axial displacement compensation and angular displacement compensation.

On one hand, when the motor vibrates or the ship body is subjected to larger external impact during working to generate larger axial or angular displacement between the output end of the motor and the input end of the full-rotation rudder propeller, the flexible vertical transmission part can compensate the axial or angular displacement, so that the normal operation of the power transmission system of the whole side thrust device is ensured. For example, when the axes of the rudder propeller shaft and the transmission shaft 2 are not on the same axis, the rudder propeller shaft drives the bearing inner pressing sleeve 37 to swing, so that the inner ring 352 and the outer ring 351 of the self-aligning bearing can swing up and down relatively, and connection failure between the rudder propeller shaft and the transmission shaft 2 is avoided. On the other hand, the large-displacement flexible carbon fiber vertical transmission component has the advantages of light weight, long service life and the like due to the adoption of the carbon fiber shaft body and the lightweight design of the input end diaphragm assembly.

The transmission component of the embodiment can be applied to a vertical power transmission system (such as a power transmission system of a ship side-pushing device) which needs to compensate axial and angular displacements, and can also be applied to a horizontal or inclined transmission system.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A flexible transmission part is characterized by comprising an input end diaphragm assembly, a transmission shaft and an output end supporting aligning assembly;

the input end diaphragm assembly comprises an input end diaphragm seat, a first diaphragm pressing plate, a supporting part and a first elastic diaphragm, the input end diaphragm seat is positioned above the first diaphragm pressing plate, the supporting part and the first elastic diaphragm, and the first elastic diaphragm is annular; the input end diaphragm seat, the supporting part and the outer side of the first elastic diaphragm are detachably connected from top to bottom in sequence through a plurality of first fasteners, and the first diaphragm pressing plate, the inner side of the first elastic diaphragm and the upper end of the transmission shaft are detachably connected from top to bottom in sequence through a plurality of second fasteners;

the output end supporting and aligning assembly comprises an output end diaphragm seat, a second diaphragm pressing plate, a second diaphragm supporting piece, a second elastic diaphragm, an aligning bearing, a bearing outer pressing sleeve and a bearing inner pressing sleeve, and the second elastic diaphragm is annular; the second diaphragm pressing plate presses on the bearing outer pressing sleeve, the second diaphragm pressing plate and the bearing outer pressing sleeve are connected with each other and are sleeved outside the outer ring of the self-aligning bearing together, and the outer ring moves along with the second diaphragm pressing plate and the bearing outer pressing sleeve simultaneously; the bearing inner pressure sleeve penetrates into the inner ring of the self-aligning bearing, the lower end of the bearing inner pressure sleeve is connected with the output end diaphragm seat, and the inner ring moves along with the bearing inner pressure sleeve and the output end diaphragm seat simultaneously; the lower extreme of transmission shaft, second diaphragm clamp plate, second elastic diaphragm's inboard and second diaphragm support piece pass through a plurality of third fasteners from last to linking to each other of detachably in proper order down, and the outside and the output diaphragm seat of second elastic diaphragm pass through a plurality of fourth fasteners from last to detachably in proper order down linking to each other.

2. The flexible drive component of claim 1, wherein the drive shaft comprises a carbon fiber shaft body, a first metal flange, and a second metal flange; two ends of the carbon fiber shaft body are respectively connected with the first metal flange and the second metal flange;

the first diaphragm pressing plate, the inner side of the first elastic diaphragm and the first metal flange are detachably connected from top to bottom in sequence through a plurality of second fasteners; the second metal flange, the second diaphragm pressing plate, the second elastic diaphragm and the second diaphragm supporting piece are sequentially detachably connected from top to bottom through a plurality of third fasteners.

3. The flexible drive component of claim 1, wherein the support component comprises a plurality of washers that respectively mate with the plurality of first fasteners in a one-to-one correspondence.

4. The flexible transmission member according to claim 3, wherein the input-end diaphragm assembly includes a plurality of press sleeve assemblies respectively fitted with the plurality of washers in a one-to-one correspondence;

each pressing sleeve component comprises a gasket and a pressing sleeve; the gasket is clamped between the washer and the upper surface of the first elastic diaphragm; the pressing sleeve comprises a cylinder body part and an annular flange annularly arranged at the bottom end of the cylinder body part, and the upper end of the cylinder body part penetrates through the first elastic diaphragm and extends into the central through hole of the gasket; the first fastener penetrates through the central through hole of the barrel body and presses the annular flange, so that the annular flange abuts against the lower surface of the first elastic diaphragm.

5. The flexible drive component of claim 1, wherein the second diaphragm support is an annular support plate that surrounds the bearing outer pressure sleeve.

6. The flexible drive member of claim 1 or 5, wherein the second diaphragm press plate and the bearing outer press sleeve are removably connected to each other by a plurality of fifth fasteners;

the bearing inner pressure sleeve is detachably connected with the output end diaphragm seat through a sixth fastener.

7. The flexible transmission member as claimed in claim 1, wherein the second diaphragm pressing plate and the bearing outer pressing sleeve are respectively provided with a first axial limiting portion and a second axial limiting portion for limiting the outer ring of the self-aligning bearing from moving in the axial direction, and the upper end face and the lower end face of the outer ring of the self-aligning bearing abut against the first axial limiting portion and the second axial limiting portion, respectively.

8. The flexible transmission member according to claim 1, wherein the bearing inner pressure sleeve and the output diaphragm seat are respectively provided with a third axial limiting portion and a fourth axial limiting portion for limiting the inner ring of the self-aligning bearing from moving in the axial direction, and the inner ring upper end surface and the inner ring lower end surface of the self-aligning bearing are respectively abutted against the third axial limiting portion and the fourth axial limiting portion.

9. The flexible transmission member according to claim 1, 7 or 8, wherein the self-aligning bearing is a spherical plain bearing.

10. The flexible drive component of claim 1, wherein the first and second elastic diaphragms are each comprised of multiple layers of metal diaphragms stacked together;

each layer of metal membrane is in a ring shape, and the ring-shaped metal membrane is composed of a plurality of fan-shaped metal membranes.