CN212079970U

CN212079970U - Elastic coupling supporting propeller thrust direct transmission

Info

Publication number: CN212079970U
Application number: CN202020222278.4U
Authority: CN
Inventors: 王欣; 邹春明; 李伟
Original assignee: Wuxi Vulkan Technologies Co ltd
Current assignee: Wuxi Vulkan Technologies Co ltd
Priority date: 2020-02-27
Filing date: 2020-02-27
Publication date: 2020-12-04
Anticipated expiration: 2030-02-27

Abstract

The utility model discloses a support propeller thrust direct transfer's elastic coupling, include the thrust bearing subassembly of being connected with the screw to and the elastic coupling subassembly of being connected with the gear box, thrust bearing subassembly with elastic coupling subassembly series connection. The utility model discloses wholly have the utility that transferable moment of torsion and thrust bore to it can reduce the volume of gear box, make the hull overall arrangement more nimble, whole set of shafting has with low costs, and economic nature is good, conveniently makes and the dismouting, and advantages such as suitability is strong have better popularization benefit and considerable market prospect to the hull structure overall arrangement under the era background that boats and ships operation was valued day by day, can produce good economy and social.

Description

Elastic coupling supporting propeller thrust direct transmission

Technical Field

The utility model relates to a shaft coupling specifically is an elastic coupling who supports screw thrust direct transmission.

Background

Along with the continuous improvement of people's requirement for cabin deck comfort level, so keep apart vibration and noise because screw or host computer work produced through the vibration isolation unit, otherwise too big hull vibration can directly lead to the hull structure to produce fatigue failure, influences the normal work of on-board equipment and instrument, reduces use accuracy, shortens life. However, in the normal condition, the coupling of the stern shaft with one end connected with the propeller and the power output shaft of the gear box at the other end bears the transmission of high torque of the main machine to the propeller and the reverse thrust generated by the action of the propeller and water flow, in the conventional shafting coupling field, the thrust from the propeller stern shaft must be transmitted to the hull through the gearbox, and at this time, because the gear box is under the action of thrust force, the machine legs are under the action of shear force, vibration isolation materials such as rubber and the like cannot be used, the gear box and the ship body can only be rigidly connected, this in turn becomes the main source of vibration causing noise and vibration, causing the hull to undergo steady state forced vibration, while at the same time the gearbox takes on both torque transmission and thrust load, the internal structure is more complicated and the volume is larger, which affects the transmission efficiency and makes the installation requirement of the gear box more severe and easy to damage. Therefore, great attention of related power assembly development enterprises is paid to how to ensure that the torque of the main engine is efficiently transmitted to the propeller of the stern shaft, and the thrust of the propeller can directly act on the ship body.

By analyzing the cause of the ship vibration, the propeller and the main engine work as key factors causing different degrees of vibration of the ship body, and further research, active vibration isolation design is usually carried out between the main engine and the ship body, namely, vibration isolation materials such as rubber and the like are utilized between the main engine and the ship body to isolate the main engine vibration, so that tail vibration caused by surface force and cavitation bubbles induced by the propeller is a main excitation source of the ship body in the vibration of the ship body, wherein the gear box bearing thrust is in rigid connection with the ship body conventionally, so that more noise and vibration generated by the excitation source are transmitted to the structure of the ship body, the ship body is subjected to steady state forced vibration, the structure of the ship body is subjected to fatigue damage, normal work of equipment and instruments on the ship is influenced, the use precision is reduced, the service life is shortened, and the health and comfort of personnel on the ship are damaged, and how to realize the operation of integrating thrust bearing and torque transmission is particularly important, the development of the elastic coupling supporting the direct transmission of the propeller thrust is the key for guaranteeing the comfort of a cabin, the safety of equipment and the light weight of a ship body.

SUMMERY OF THE UTILITY MODEL

For solving the defect among the above-mentioned prior art, the utility model provides a support elastic coupling that screw thrust directly passes, the utility model discloses wholly have the utility that can transmit moment of torsion and thrust and bear to it can reduce the volume of gear box, make the hull overall arrangement more nimble, whole set of shafting has with low costs, and economic nature is good, conveniently makes and dismouting, and advantages such as suitability is strong have better popularization benefit and considerable market prospect under to hull structure overall arrangement, the era background that boats and ships were put into operation and attach importance day by day, can produce good economy and social.

In order to achieve the technical purpose, the utility model adopts the following technical scheme: an elastic coupling supporting propeller thrust direct transmission comprises a thrust bearing assembly connected with a propeller and an elastic coupling assembly connected with a gear box, wherein the thrust bearing assembly is connected with the elastic coupling assembly in series;

the thrust bearing assembly comprises a flange shaft, a pair of thrust bearings are arranged on the outer side of the flange shaft, and one end of one of the thrust bearings is provided with a fixing ring; two ends of each thrust bearing are respectively provided with a first end cover and a second end cover, and the first end cover and the second end cover are fixed on the bearing block; a support spring is arranged in the first end cover, and the other end of the support spring is abutted to the thrust bearing close to the first end cover; the outer end of the bearing seat is fixed on the mounting plate assembly through a pressure ring, and rubber rings are arranged between the pressure ring and the bearing seat and between the mounting plate assembly and the bearing seat;

the elastic coupling assembly comprises an input flange, one end of the input flange is fixedly connected with a first connecting flange, the first connecting flange is fixedly connected with an intermediate flange, the intermediate flange is fixedly connected with a second connecting flange, the second connecting flange is fixedly connected with a sliding flange, the sliding flange is fixedly connected with a shaft sleeve, the shaft sleeve is sleeved on the flange shaft, and an expansion sleeve is installed in the shaft sleeve.

Further, the first end cover and the second end cover are fixed on the bearing seat through a first bolt and a first spring washer.

Furthermore, the outer ends of the first end cover and the second end cover are respectively provided with a framework oil seal, a wear-resistant sleeve and an O-shaped ring.

Further, the bearing seat, the pressing ring and the mounting plate assembly are fixedly connected through a locking nut, a second spring washer, a flat washer and a second bolt.

Further, a space ring is arranged between the rubber ring and the second bolt.

Furthermore, the first end cover and the second end cover are both provided with oil nozzles, the bearing seat is provided with an observation oil port, and the observation oil port is communicated with the oil nozzles.

Further, the input flange and the first coupling flange are rigidly coupled to a fourth spring washer via a fourth bolt.

Further, the first coupling flange and the middle flange are connected with a third spring washer through a third bolt, and a rubber piece is arranged around the third bolt.

To sum up, the utility model discloses following technological effect has been gained:

1. from the application field, the thrust direct transmission structure is simple, the installation adaptability of the elastic coupling is strong, the serial splicing is adopted, the relevant size of the elastic coupling can be correspondingly changed according to different application environments, meanwhile, the press-in rubber piece can select different hardness according to different working conditions, the interfaces at two ends can be correspondingly designed according to the corresponding interface ends, and the application range is wide;

2. from the thrust bearing point of view, because the thrust bearing structure is simple, the stable mechanical structure is taken as the main, the thrust bearing capacity is strong, meanwhile, the feasibility of lubrication, detection and repair is considered in multiple directions during design, the thrust bearing continuity is realized, and the thrust bearing efficiency is high;

3. from the perspective of torque transmission efficiency, as the elastic connection is realized by wrapping the connecting bolt by the rubber piece, compared with a flaky elastic coupling, the flexible coupling has the advantages of stronger rigidity, less heat generation, good heat dissipation performance, less heat loss efficiency and high torque transmission efficiency;

4. from the installation convenience, the trouble of integral assembly is saved to its serial-type structure, and can save partial function of gear box owing to the realization that its thrust bore, has the convenient characteristics of installation.

Drawings

Fig. 1 is a cross-sectional view of an apparatus provided by an embodiment of the present invention;

FIG. 2 is a side view of the apparatus with the propeller attached;

FIG. 3 is a side elevational view of the device in connection with a gearbox;

fig. 4 is a side view of an apparatus provided by an embodiment of the present invention;

fig. 5 is a perspective view of an apparatus provided by an embodiment of the present invention;

FIG. 6 is a cross-sectional view of a portion of the thrust bearing assembly;

FIG. 7 is a schematic view of FIG. 6 rotated 20;

FIG. 8 is a schematic view of FIG. 6 rotated 10;

FIG. 9 is a cross-sectional view of a portion of the resilient coupling assembly;

in the figure, 1, a thrust bearing assembly, 101, a flange shaft, 102, a first end cover, 103, a second end cover, 104, a bearing seat, 105, a rubber ring, 106, a press ring, 107, a spacer ring, 108, a fixed ring, 109, a connecting flange disc, 110, a mounting plate assembly, 111, a thrust bearing, 112, a framework oil seal, 113, a wear-resistant sleeve, 114, an O-shaped ring, 115, a first bolt, 116, a first spring washer, 117, a lock nut, 118, a second spring washer, 119, a flat washer, 120, a second bolt, 121, a fifth bolt, 122, an oil nozzle, 123, an observation oil port, 124, a support spring, 2, an elastic coupling assembly, 201, a first connecting flange, 202, a rubber piece, 203, a baffle ring, 204, a middle flange, 205, a third spring washer, 206, a third bolt, 207, a shaft sleeve, 208, a sliding flange, 209, an expansion sleeve, 210, an input flange, 211 and a fourth spring washer, 212. fourth bolts, 213, screws, 214, screws, 215, second coupling flange.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Example (b):

as shown in fig. 1, an elastic coupling for supporting propeller thrust direct transmission comprises a thrust bearing assembly 1 connected with a propeller and an elastic coupling assembly 2 connected with a gear box, wherein the left side in fig. 1 is a propeller side, the right side is a gear box side, the thrust bearing assembly 1 is connected with the elastic coupling assembly 2 in series, wherein the thrust bearing assembly 1 has the main function of bearing thrust to a ship body formed by a propeller of a stern shaft and water flow, as shown in fig. 2 (propeller side), the stern shaft is connected with the thrust bearing assembly 1 in a flange connection mode. As shown in fig. 3 (the side of the gear box), the elastic coupling assembly 2 mainly functions to efficiently transmit the torque on the power output shaft of the gear box to the stern shaft, and has the capabilities of torsional vibration isolation, axial displacement, radial displacement and angular displacement compensation, and is conventionally connected with the output power shaft of the gear box in a flange connection manner.

The thrust bearing assembly 1 part utilizes the mounting plate structure of class flange with the thrust of propeller production directly to the hull, specifically as follows:

fig. 4 and 5 show a side view and a perspective view of the device.

As shown in fig. 6, the thrust bearing assembly 1 includes a flange shaft 101, the flange shaft 101 is the center of the whole assembly, and the other end of the flange shaft 101 fixes a pressure plate with a coupling flange 109 to the flange shaft 101 by using a fifth bolt 121. A pair of thrust bearings 111 are arranged on the outer side of the flange shaft 101, a fixing ring 108 is arranged at one end of one thrust bearing 111, the thrust bearing assembly 1 adopts the pair of thrust bearings 111 and utilizes a shaft shoulder to transfer thrust, and the other end of the thrust bearing assembly is locked by the fixing ring 108; two ends of a pair of thrust bearings 111 are respectively provided with a first end cover 102 and a second end cover 103, the first end cover 102 and the second end cover 103 are fixed on the bearing seat 104, and further, the first end cover 102 and the second end cover 103 are fixed on the bearing seat 104 through a first bolt 115 and a first spring washer 116. The first end cover 102 is internally provided with a support spring 124, the other end of the support spring 124 is abutted against the thrust bearing 111 close to the first end cover 102, and the support spring 124 can pre-tighten and center the thrust bearing 111.

The outer ends of the first end cover 102 and the second end cover 103 are respectively provided with a framework oil seal 112, a wear-resistant sleeve 113 and an O-shaped ring 114. The framework oil seal 112, the wear-resistant sleeve 113 and the O-ring 114 form an oil leakage-proof system inside the bearing.

As shown in fig. 7, which is a partial sectional view of the apparatus rotating 20 °, the outer end of the bearing seat 104 is fixed on the mounting plate assembly 110 by a press ring 106, and rubber rings 105 are respectively disposed between the press ring 106 and the bearing seat 104, and between the mounting plate assembly 110 and the bearing seat 104; further, the bearing seat 104, the pressing ring 106 and the mounting plate assembly 110 are fixedly connected through a lock nut 117, a second spring washer 118, a flat washer 119 and a second bolt 120. Further, a spacer 107 is provided between the rubber ring 105 and the second bolt 120 to prevent the rubber ring from being damaged by the screw thread. The thrust of the bearing seat 104 is compressed by the compression ring 106 and the rubber ring 105 and then transmitted to the ship body connected with the mounting plate 110, wherein the rubber ring 105 plays a role in isolating tail vibration from being transmitted to the ship body and can avoid generating resonance.

As shown in fig. 8, which is a partial sectional view of the device rotating 20 °, the first end cap 102 and the second end cap 103 are both provided with oil nipples 122, the lubricating oil in the bearing is injected from the oil nipples 122, the bearing seat 104 is provided with an observation oil port 123, the observation oil port 123 is communicated with the oil nipples 122, and the observation oil port 123 is sealed by bolts.

In conclusion, the thrust bearing assembly 1 partially realizes the direct transmission of the thrust from the propeller of the stern shaft to the ship body and effectively isolates the transmission of tail vibration.

As shown in fig. 9, the elastic coupling assembly 2 includes an input flange 210, one end of the input flange 210 is fixedly connected with a first coupling flange 201, the first coupling flange 201 is fixedly connected with an intermediate flange 204, the intermediate flange 204 is fixedly connected with a second coupling flange 215, the second coupling flange 215 is fixedly connected with a sliding flange 208, the sliding flange 208 is fixedly connected with a shaft sleeve 207, the shaft sleeve 207 is sleeved on the flange shaft 101, and an expansion sleeve 209 is installed in the shaft sleeve 207.

Specifically, the power input is coupled to the power output shaft of the gearbox via the input flange 210, introducing torque. One end of the first coupling flange 201 is rigidly connected with the input flange 210 by a fourth bolt 212 and a fourth spring washer 211, the other end is connected with the middle flange 204 by a third bolt 206 and a third spring washer 205, wherein the rubber member 202 is also arranged around the third bolt 206, the middle flange 204 is rigidly connected with the second coupling flange 215 by a screw 213, the second coupling flange 215 is coupled with the sliding flange 208 by a third bolt 206 and the rubber member 202, the sliding flange 208 is rigidly connected with the shaft sleeve 207 by a screw 214, wherein the shaft sleeve 207 is internally provided with an expansion sleeve 209 which can be screwed in to enable the shaft sleeve 207 to be tightly clasped with the flange shaft 101 so as to transmit torque, the baffle ring 203 can position the rubber member 202 to prevent the rubber member 202 from sliding out of the bolt holes of the first coupling flange 201 and the second coupling flange 215 in operation, and the two groups of rubber members 202 are arranged so as to have torsional vibration isolation when transmitting torque, axial displacement, radial displacement, angular displacement compensation capability.

The utility model discloses device one end is passed through keyway or flange and screw hookup, the other end and the hookup of gear box power output shaft, the interlude adopts flange form and hull hookup, it is direct, high efficiency, thrust bears, high torque transmission, compare with traditional high-elastic shaft coupling, its structural aspect has set up a pair of thrust bearing at the interlude, the screw directly transmits to the hull with this section structure of thrust accessible that the water produced, can avoid middleware gear box rigid drive to cause the condition of hull forced vibration, and utilize rubber to twist reverse the vibration isolation with the one end of gear box power output shaft hookup, whole has good axial displacement, radial displacement, angular displacement compensation ability, market prospect is considerable.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all the modifications and equivalents of the technical spirit of the present invention to any simple modifications of the above embodiments are within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a support elastic coupling of screw thrust direct transmission which characterized in that: the propeller-driven gearbox comprises a thrust bearing assembly (1) connected with a propeller and an elastic coupling assembly (2) connected with a gearbox, wherein the thrust bearing assembly (1) is connected with the elastic coupling assembly (2) in series;

the thrust bearing assembly (1) comprises a flange shaft (101), a pair of thrust bearings (111) is arranged on the outer side of the flange shaft (101), and a fixing ring (108) is arranged at one end of one of the thrust bearings (111); two ends of each thrust bearing (111) are respectively provided with a first end cover (102) and a second end cover (103), and the first end cover (102) and the second end cover (103) are fixed on a bearing seat (104); a support spring (124) is arranged in the end cover I (102), and the other end of the support spring (124) is abutted with the thrust bearing (111) close to the end cover I (102); the outer end of the bearing seat (104) is fixed on an installation plate assembly (110) through a pressing ring (106), and rubber rings (105) are arranged between the pressing ring (106) and the bearing seat (104) and between the installation plate assembly (110) and the bearing seat (104);

elastic coupling subassembly (2) are including input flange (210), the first hookup flange (201) of one end fixedly connected with of input flange (210), first hookup flange (201) fixedly connected with intermediate flange (204), intermediate flange (204) fixedly connected with second hookup flange (215), second hookup flange (215) fixedly connected with slide flange (208), slide flange (208) fixed connection axle sleeve (207), axle sleeve (207) cover is established on flange axle (101), install tight cover (209) that expands in axle sleeve (207).

2. The elastic coupling for supporting propeller thrust direct transmission according to claim 1, wherein: the first end cover (102) and the second end cover (103) are fixed on the bearing seat (104) through a first bolt (115) and a first spring washer (116).

3. The elastic coupling for supporting propeller thrust direct transmission according to claim 1, wherein: and the outer ends of the first end cover (102) and the second end cover (103) are respectively provided with a framework oil seal (112), a wear-resistant sleeve (113) and an O-shaped ring (114).

4. The elastic coupling for supporting propeller thrust direct transmission according to claim 1, wherein: the bearing seat (104), the pressing ring (106) and the mounting plate assembly (110) are fixedly connected through a locking nut (117), a second spring washer (118), a flat washer (119) and a second bolt (120).

5. The elastic coupling for supporting propeller thrust direct transmission according to claim 4, wherein: and a space ring (107) is arranged between the rubber ring (105) and the second bolt (120).

6. The elastic coupling for supporting propeller thrust direct transmission according to claim 1, wherein: the oil nozzle (122) is arranged on each of the first end cover (102) and the second end cover (103), an observation oil liquid opening (123) is formed in the bearing seat (104), and the observation oil liquid opening (123) is communicated with the oil nozzle (122).

7. The elastic coupling for supporting propeller thrust direct transmission according to claim 1, wherein: the input flange (210) and the first coupling flange (201) are rigidly coupled to a fourth spring washer (211) by a fourth bolt (212).

8. The elastic coupling for supporting propeller thrust direct transmission according to claim 1, wherein: the first coupling flange (201) and the intermediate flange (204) are connected with a third spring washer (205) through a third bolt (206), and a rubber piece (202) is arranged around the third bolt (206).