CN218124467U - Propeller - Google Patents

Abstract

The utility model provides a propeller, includes the casing, establishes screw and motor, its characterized in that: a shell is arranged above the machine shell, and a wiring board, a wire connecting post and a signal wire connecting post are arranged in the shell; the wire connecting column comprises a first joint provided with a shaft hole and is hermetically connected to the wiring board; the second joint comprises a small-diameter end which can be inserted into the shaft hole and a large-diameter end which can be limited above the shaft hole, the outer peripheral surface of the small-diameter end of the second joint is also provided with an edge milling groove, and the outer peripheral surface of the first joint is provided with a positioning hole at a position corresponding to the edge milling groove; and the fastener is used for realizing the axial limit of the second joint. The utility model has the advantages that: the double-connector plug-in mode is adopted as a wire connecting column to realize connection of a motor outgoing line and a controller wire, the edge milling groove and the fastener matching mode enable the reliability of connection to be better, mutual separation of connectors can be effectively prevented, the reliability of wire connection is guaranteed, maintenance in the later stage is facilitated, and disassembly and assembly are facilitated.

Description

Propeller

Technical Field

The utility model relates to a propeller, especially an electric propulsion ware that boats and ships were used.

Background

In the prior art, a propeller type ship propeller is the most common ship driving device, for example, as disclosed in the existing chinese patent application No. 202011076024.7, which was previously applied by the inventor, a ship propeller, the propeller comprises a power source, a transmission mechanism and a propeller, wherein the transmission mechanism further comprises a first tooth part and a second tooth part which are engaged with an input shaft and an output shaft and are respectively mounted on the input shaft and the output shaft, and the propeller type ship propeller is characterized in that the first tooth part is a screw rod, and the second tooth part is a face gear.

The driving device for the ship usually works underwater, and is soaked in water for a long time, so that the sealing of the motor is particularly important, once the sealing of the motor fails, lubricating oil in the motor can leak to cause water body pollution, and external water can easily enter the motor, so that the motor breaks down or even is dangerous. However, in the above patent, the sealing of the motor is realized by adopting a structure of a common mechanical element oil seal and a sealing ring, and because the ship propeller is placed in an underwater environment for a long time, the oil seal structure is easy to oxidize or corrode, the service life of the sealing structure is reduced, and the use reliability and safety of the whole motor are finally affected.

In addition, except underwater drive arrangement, still be provided with the wiring board, wire connector and the signal line connector that are used for automatically controlled connection in the shell part of connecting the hull usually, when current wire connector wiring, the electric wire is difficult to fix a position on the wire connector, and in case the atress is dragged the back electric wire and is deviate from more easily, if will change the maintenance wire connector moreover, then dismantle comparatively troublesome, and easily damage the electric wire, still remain to be improved.

Therefore, how to realize effective sealing of the ship propeller and improve the reliability of wire connection and the maintenance convenience is a problem to be solved urgently in the current ship propeller.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a marine propeller that automatically controlled wiring is simple more reliable and easy maintenance is provided to above-mentioned prior art current situation.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a propeller, includes the casing, sets up screw and the motor that can drive screw pivoted on the casing, its characterized in that: a shell which can be connected with an electric control device of the propeller is arranged above the shell, and a wiring board, a wire connecting post and a signal wire connecting post which are used for electric control connection are arranged in the shell; wherein the lead connecting post comprises

The first joint is hermetically connected to the wiring board and provided with a shaft hole;

the cross section of the second joint is a stepped shaft, the second joint comprises a small-diameter end which can be inserted into the shaft hole and a large-diameter end which can be limited on the shaft hole, the outer peripheral surface of the small-diameter end of the second joint is also provided with an edge milling groove, and correspondingly, the outer peripheral surface of the first joint is provided with a positioning hole at the position corresponding to the edge milling groove;

and the fastener is used for realizing the axial limiting of the second joint, and can be inserted into the positioning hole and matched with the edge milling groove.

In order to further improve the reliability of connection and prevent the first joint and the second joint from loosening, it is further preferable that the shaft hole is an eccentric hole, the number of the milling grooves is two, the milling grooves are vertically and alternately arranged on the same side of the outer peripheral surface of the small-diameter end of the second joint, and correspondingly, the positioning holes are two and have an interval distance corresponding to the positions of the milling grooves. The eccentric hole design can enable the part of the fastener inserted into the milling edge groove to be lengthened, and therefore the connection reliability of the first joint and the second joint is improved.

In order to improve the connection sealing performance and facilitate installation, preferably, the wiring board is provided with an installation hole for inserting the first connector, the insertion part of the first connector is provided with an annular groove, the annular groove is provided with a sealing ring, and the first connector and the installation hole are sealed through the sealing ring.

Preferably, a motor inner cavity which is used for accommodating the motor and is closed is formed in the machine shell, lubricating oil is filled in the motor inner cavity, an oil cavity which is communicated with the motor inner cavity and can stretch is further arranged outside the shell, and the oil cavity is located above the water surface. Therefore, the lubricating oil is adopted to seal the inner cavity of the motor, so that both lubrication and sealing are considered, the sealing reliability is higher, and the service life of the equipment is longer.

Considering that the volume change is influenced by the expansion and contraction of the lubricating oil, as a further preference, the oil cavity comprises an oil bag capable of elastically contracting and an oil pipe for connecting the oil bag with the inner cavity of the motor. For convenience of installation, the oil pipe can be a silicone pipe or a nylon pipe.

In view of compact structure and convenience for underwater operation, the casing preferably comprises a front end cover, a middle casing and a rear end cover, the middle casing is arranged between the front end cover and the rear end cover, and the propeller is arranged behind the rear end cover.

In view of aesthetic property and practical function, it is further preferable that the middle shell includes a cylindrical portion to which the front end cap and the rear end cap are respectively coupled, a wing portion below the cylindrical portion, and a neck portion above the cylindrical portion, wherein the outer shell is coupled to the neck portion of the middle shell.

In order to further improve the sealing performance and prevent the oil leakage of the motor or the external water from entering the inner cavity of the motor, preferably, a sealing cover capable of sealing the rear end cover is arranged at the tail part of the rear end cover, a sealing element capable of sealing the inner cavity of the motor is arranged between the rear end cover and the sealing cover, the sealing element is an annular sealing gasket, the cross section of the sealing gasket comprises a framework and double-layer sealing membranes, and a groove capable of being filled with water sealing lubricating grease is formed between the adjacent sealing membranes.

For the convenience of the installation of motor is fixed, guarantees the axial and radial location of motor simultaneously, ensures the safe and reliable of use, as preferred, the motor is including motor spindle, stator module, rotor subassembly, magnet steel and motor output shaft, wherein, the rotor subassembly connect in on the motor output shaft and can drive this motor output shaft synchronous revolution, the magnet steel sets up between stator module and rotor subassembly, stator module axial spacing in on the mesochite, the rotor subassembly both ends still are provided with the rotor end plate that can prevent the rotor punching piece among the rotor subassembly from loosening.

In order to adapt to the use in the lubricating oil environment and ensure the normal operation of the equipment, preferably, the end part of the motor output shaft extends into the front end of the machine shell, the end part of the motor output shaft is provided with a waterproof magnetic encoder, and the tail part of the motor output shaft extends out of the machine shell and is fixedly connected with the propeller.

Compared with the prior art, the utility model has the advantages of:

1. the double-connector plug-in mode is adopted as a wire connecting column to realize the connection of the motor outgoing line and the controller wire, the connection reliability is better due to the matching mode of the edge milling groove and the fastener, the mutual separation of the connectors can be effectively prevented, the reliability of the wire connection is ensured, the later maintenance is convenient, and the disassembly and the assembly are convenient;

2. the sealing ring structure is added at the assembly position of the second joint and the wiring board, so that oil in the inner cavity can be prevented from overflowing after the motor is inclined, and the sealing performance is better.

3. Lubricating oil is filled in the inner cavity of the motor, and a telescopic oil bag is additionally arranged outside the inner cavity of the motor, so that the inner cavity of the motor achieves the effect of automatic balance, the lubricating oil can solve the lubricating problem of the motor, can prevent the interior of the motor from dewing and rusting, and can well solve the problem of cleaning the interior of the motor; because the motor inner chamber is full of lubricating oil, lubricating oil can also play the refrigerated effect as the transmission medium for the heat dissipation of motor is more quick, uses more stably.

Drawings

Fig. 1 is a schematic view of a three-dimensional structure of a propeller according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view of a propeller (with the propeller assembly removed) according to an embodiment of the present invention.

Fig. 3 is a schematic view of an installation structure of a wire terminal on a wiring board according to an embodiment of the present invention.

Fig. 4 is a perspective sectional view of fig. 3.

Fig. 5 is a schematic perspective exploded view of a wire connecting post according to an embodiment of the present invention.

Fig. 6 is a partial perspective cross-sectional view of a propeller according to an embodiment of the present invention.

Fig. 7 is a perspective view of a seal according to an embodiment of the present invention.

FIG. 8 is a cross-sectional view of a seal according to an embodiment of the present invention.

Fig. 9 is an enlarged view of part I shown in fig. 8.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 9, the present embodiment relates to an electric propeller for a ship, which includes a housing 1, a propeller 2 disposed on the housing 1, and a motor capable of driving the propeller 2 to rotate. The propeller 2 of this embodiment is an assembly including a plurality of components such as a blade and a helical tube, and the structure of the propeller 2 is the prior art, which is not described in detail in this embodiment.

The casing 1 of the present embodiment includes a front end cover 11, a middle casing 12 and a rear end cover 13, the middle casing 12 is disposed between the front end cover 11 and the rear end cover 13, and the propeller 2 is disposed behind the rear end cover 13, wherein the middle casing 12 includes a cylinder portion 121 capable of being connected to the front end cover 11 and the rear end cover 13, a wing portion 123 below the cylinder portion 121, and a neck portion 122 above the cylinder portion 121, a housing 3 capable of being connected to an electric control device of the propeller is further disposed on the neck portion 122 of the middle casing 12, the housing 3 is communicated with a motor cavity 4 for accommodating the motor, and a wiring board 6, a wire connecting post 7 and a signal wire connecting post 8 for electric control connection are disposed on the housing 3, as shown in fig. 1, fig. 2 and fig. 6.

The lead connecting post 7 comprises a first joint 71, a second joint 72, a fastener 73 and a sealing ring 74, wherein the first joint 71 is connected to the wiring board 6 in a sealing manner, and a shaft hole 711 is formed in the first joint 71; the cross section of the second joint 72 is a stepped shaft, the second joint 72 comprises a small-diameter end which can be inserted into the shaft hole 711 and a large-diameter end which can be limited on the shaft hole 711, a step surface 721 which can be limited on the shaft hole 711 is formed at the junction of the small-diameter end and the large-diameter end, an edge milling groove 722 is formed on the outer peripheral surface of the small-diameter end of the second joint 72, and correspondingly, a positioning hole 712 is formed on the outer peripheral surface of the first joint 71 at a position corresponding to the edge milling groove 722; the fastener 73 may be inserted into the locating hole 712 and engage the milled edge slot 722.

In order to further improve the connection reliability and prevent the first joint 71 and the second joint 72 from being loosened, the shaft hole 711 of the present embodiment is designed as an eccentric hole, two milling grooves 722 are vertically and alternately arranged on the same side of the outer peripheral surface of the small-diameter end of the second joint 72, adjacent milling grooves 722 are spaced by a protrusion 723, see fig. 3 to 5, and correspondingly, two positioning holes 712 are also provided and spaced by a distance corresponding to the positions of the milling grooves 722; the purpose of the eccentric hole design is to lengthen the portion of the fastener 73 inserted into the positioning hole 712, thereby improving the reliability of the connection of the first joint 71 and the second joint 72. The fastening member 73 of this embodiment is a screw, a threaded hole may be designed in the positioning hole 712, and the screw is inserted into the threaded hole and screwed and then clamped in the milled groove 722, so as to achieve axial position limitation of the second joint 72 in the eccentric hole and prevent the second joint 72 and the first joint 71 from being separated.

In order to improve the connection sealing performance and facilitate installation, the wiring board 6 is provided with an installation hole for inserting the first joint 71, the first joint 71 is provided with an annular groove 713 at the insertion part, a sealing ring 74 is arranged on the annular groove 713, and the first joint 71 and the installation hole are sealed through the sealing ring 74.

During connection, the motor outgoing line is plugged into the second connector 72 and is crimped with two sections by crimping pliers to ensure anti-falling strength, and the edge milling groove 722 in the second connector 72 is matched with the fastener 73 to effectively prevent the wire from being pulled out in a single direction; meanwhile, the first joint 71 and the second joint 72 of the present embodiment are made of brass and are integrally plated with silver to increase conductivity, and the wiring board 6 is sealed by compression bonding with a high-density non-asbestos plate double-sided greased screw, thereby preventing oil from overflowing.

In the embodiment, a motor inner cavity 4 which is used for accommodating a motor and is closed is formed in the machine shell 1, lubricating oil is filled in the motor inner cavity 4, an oil cavity 31 which is communicated with the motor inner cavity 4 and can be expanded and contracted is further arranged outside the machine shell 1, and the oil cavity 31 is arranged above the water surface, so that the operation of workers on a ship is facilitated; wherein, the oil chamber 31 can adopt an elastically contractible oil bag, an oil pipe 32 is arranged between the oil bag and the motor inner chamber 4, the oil pipe 32 can adopt a silicone tube or a nylon tube, one end of the oil pipe 32 is connected to the shell 3, and the other end is connected with the oil bag; the motor is initially in a negative pressure state, lubricating oil freely expands after being heated and freely contracts after being heated along with the change of working temperature (expansion with heat and contraction with cold) in the motor, and the oil bag connected through the oil pipe 32 has the function of automatic contraction, so that an automatic balance effect can be formed between the inner cavity 4 of the motor and the oil bag.

In order to conveniently detect the oil usage condition of the motor cavity 4, a liquid level sensor (not shown in the figure) capable of detecting the level of lubricating oil in the motor cavity 4 is further arranged on the casing 1, the liquid level sensor can monitor the oil quantity of the motor cavity 4, and when the oil quantity is less than a warning value, the liquid level sensor is turned on to give an alarm in time so as to inform a user of adding oil to the motor cavity 4 from the outside.

In the embodiment, the lubricating oil in the motor inner cavity 4 is special oil, and the embodiment adopts modified oil taking high-grade sewing machine oil as base oil, so that the oil has self-volatility, does not generate oil sludge after long-time working, and can well solve the problem of cleaning the interior of the motor; simultaneously, this oil still has better oxidation resistance, antirust property and lubricity, and non-corrosiveness, and motor inner chamber 4 is filled with lubricating oil, has solved the lubrication problem of motor on the one hand, and on the other hand can also avoid the inside dewfall of motor to rust, simultaneously, can solve the motor cooling problem for the heat dissipation is faster, and work is more stable.

The motor of this embodiment is including stator module 91, rotor subassembly 92, magnet steel 93 and motor output shaft 94, for the convenience of the installation is fixed, guarantee axial and radial location simultaneously, wherein, motor output shaft 94 wears to locate among rotor subassembly 92, this rotor subassembly 92 shaping has radial interior convex key structure, and the slot that corresponds with corresponding key structure is then seted up to motor output shaft 94's periphery wall, thereby make and realize the key-type connection between rotor subassembly 92 and the motor output shaft 94, and can drive this motor output shaft 94 synchronous revolution, magnet steel 93 sets up between stator module 91 and rotor subassembly 92, stator module 91 axial is spacing on mesochite 12, rotor subassembly 92 both ends still are provided with the rotor end plate 95 that can prevent the rotor punching piece in the rotor subassembly 92 from loosening.

In order to prevent the water and oil from entering the motor, the tail of the rear end cover 13 is provided with a sealing cover 131 capable of sealing the rear end cover 13, the motor output shaft 94 passes through the rear end cover 13 and the sealing cover 131 and is exposed out of the shell 1 and fixedly connected with the propeller 2, referring to fig. 2, the motor output shaft 94 of the embodiment is exposed out of the shell and needs to be protected from corrosion because the part is in seawater, so that two sections of materials are adopted for friction welding, the part of the motor output shaft 94 positioned in the motor cavity 4 is soaked in oil and mainly made of carburizing steel, the part of the shell exposed out and contacted with the seawater is made of martensitic stainless steel, and the two sections are subjected to heat treatment after friction welding, so that the overall strength of the motor spindle is improved.

In addition, in order to adapt to the use in the lubricating oil environment and ensure the normal operation of the equipment, the end part of the motor output shaft 94 extends into the front end of the machine shell 1, and the end part of the motor output shaft 94 is provided with a waterproof magnetic encoder 96.

Furthermore, a sealing element for sealing the motor cavity 4 is disposed between the rear end cover 13 and the cover 131, the sealing element (also called "oil seal") of this embodiment is an annular sealing pad 5, see fig. 7 to 9, the cross section of the sealing pad 5 includes an L-shaped frame 50 and a double-layer sealing membrane 51 located inside the frame 50, a groove 52 is formed between adjacent sealing membranes 51, water sealing grease using PAO as base oil can be injected, and in order to improve the sealing reliability, the bottom of each sealing membrane 51 has a curved folded edge 511, and the folded edge 511 is abutted against the outer peripheral wall of the motor output shaft 94 (or the output part of the planet carrier, i.e. the solid shaft part).

The sealed 5 that fills up of this embodiment adopts unilateral two lip seal structure, can prevent inside rivers get into the motor outward, can leak outside interior waterproof liquid again, plays dual sealed and lubrication action, ensures security and the feature of environmental protection that the motor used under water.

The framework 50 of the sealing gasket 5 of the embodiment is made of metal materials, so that the sealing gasket plays an effective role in supporting and positioning, the sealing membrane 51 is made of tetrafluoroethylene synthetic materials, so that the sealing gasket has memory property, can always keep the same holding force after being shaped, and can automatically compensate after being worn; moreover, the sealing membrane 51 of the embodiment has good self-lubricating property, can work under the condition of no lubrication, has a service life of 8000h, can work at a temperature of 260 ℃ and can bear the sealing pressure of 1Mpa, and the linear velocity reaches 25m/s; in addition, the sealing friction surface 21 is covered by a special wear-resistant coating (mainly made of ceramic materials in the embodiment), the surface hardness can reach more than HV1000, the surface smoothness is less than 0.2um, the wear resistance is good, the friction resistance is small, and the sealing diaphragm 51 is matched, so that the service life of parts is greatly prolonged, and the starting resistance and the energy loss during working of the motor are reduced.

Directional terms such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", and the like are used in the description and claims of the present invention to describe various example structural portions and elements of the present invention, but these terms are used herein for convenience of description only and are determined based on example orientations shown in the drawings. Because the disclosed embodiments may be oriented in different directions, the directional terms are used for descriptive purposes and are not intended to be limiting, e.g., "upper" and "lower" are not necessarily limited to directions opposite or coincident with the direction of gravity.

Claims (10)

1. The utility model provides a propeller, includes casing (1), sets up screw (2) on casing (1) and can drive screw (2) pivoted motor, its characterized in that: a shell (3) which can be connected with an electric control device of the propeller is arranged above the machine shell (1), and a wiring board (6), a wire connecting column (7) and a signal wire connecting column (8) which are used for electric control connection are arranged in the shell (3); wherein the lead connecting post (7) comprises

A first joint (71) hermetically connected to the wiring board (6), the first joint (71) having a shaft hole (711);

the cross section of the second joint (72) is a stepped shaft, the second joint (72) comprises a small-diameter end which can be inserted into the shaft hole (711) and a large-diameter end which can be limited on the shaft hole (711), an edge milling groove (722) is formed in the outer peripheral surface of the small-diameter end of the second joint (72), and correspondingly, a positioning hole (712) is formed in the outer peripheral surface of the first joint (71) at a position corresponding to the edge milling groove (722);

and the fastener (73) is used for realizing the axial limit of the second joint (72), and the fastener (73) can be inserted into the positioning hole (712) and matched with the milling edge groove (722).

2. The propeller of claim 1, wherein: the shaft hole (711) is an eccentric hole, the two milling grooves (722) are vertically arranged on the same side of the outer peripheral surface of the small-diameter end of the second joint (72) at intervals, and correspondingly, the two positioning holes (712) are spaced at intervals corresponding to the positions of the milling grooves (722).

3. The propeller of claim 1, wherein: the wiring board (6) is provided with a mounting hole for inserting a first joint (71), the first joint (71) is provided with an annular groove (713) at the inserting position, a sealing ring (74) is arranged on the annular groove (713), and the first joint (71) and the mounting hole are sealed through the sealing ring (74).

4. The propeller of claim 1, wherein: the motor is characterized in that a motor inner cavity (4) which is used for accommodating the motor and is closed is formed in the machine shell (1), lubricating oil is filled in the motor inner cavity (4), an oil cavity (31) which is communicated with the motor inner cavity (4) and can be expanded is further arranged outside the shell (3), and the oil cavity (31) is located above the water surface.

5. The propeller of claim 4, wherein: the oil cavity (31) comprises an oil bag which can elastically contract and an oil pipe (32) which connects the oil bag and the inner cavity (4) of the motor.

6. The propeller of claim 1, wherein: the motor shell (1) comprises a front end cover (11), a middle shell (12) and a rear end cover (13), the middle shell (12) is arranged between the front end cover (11) and the rear end cover (13), and the propeller (2) is arranged behind the rear end cover (13).

7. The propeller of claim 6, wherein: the middle shell (12) comprises a cylinder part (121) which can be respectively connected with the front end cover (11) and the rear end cover (13), a wing part (123) positioned below the cylinder part (121) and a neck part (122) positioned above the cylinder part (121), wherein the shell (3) is connected onto the neck part (122) of the middle shell (12).

8. The propeller of claim 6, wherein: the tail of rear end housing (13) is provided with closing cap (131) that can seal this rear end housing (13), be provided with the sealing member that can seal motor inner chamber (4) between rear end housing (13) and closing cap (131), and, the sealing member is a ring packing, and this sealed cross section of filling up is including skeleton and double-deck sealed diaphragm, forms the recess that can pour into water seal grease into between the adjacent sealed diaphragm.

9. The propeller of claim 6, wherein: the motor is including motor spindle, stator module (91), rotor subassembly (92), magnet steel (93) and motor output shaft (94), wherein, rotor subassembly (92) connect in on motor output shaft (94) and can drive this motor output shaft (94) synchronous revolution, magnet steel (93) set up between stator module (91) and rotor subassembly (92), stator module (91) axial spacing in on mesochite (12), rotor subassembly (92) both ends still are provided with rotor end plate (95) that can prevent the rotor punching piece among rotor subassembly (92) to loosen.

10. The propeller of claim 9, wherein: the end part of the motor output shaft (94) extends into the front end of the casing (1), the end part of the motor output shaft (94) is provided with a waterproof magnetic encoder (96), and the tail part of the motor output shaft (94) extends out of the casing (1) and is fixedly connected with the propeller (2).

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