CN204312318U - Feeding oil pump peculiar to vessel - Google Patents

Abstract

The utility model relates to an oil delivery pump, in particular to a marine oil delivery pump unit. It mainly solves the technical problems existing in the prior art that there is no emergency device that can replace the work of the pump when the oil pump on the gear box breaks down during the voyage of the ship, and cannot ensure the safe operation of the ship. The utility model comprises a helical gear oil pump. The helical gear oil pump is connected with a three-phase asynchronous motor. The helical gear oil pump includes a pump body, a pump cover, a driving shaft, a driven shaft, a driving gear, a driven gear, a driving gear and a driven gear. The gears are respectively mounted on the driving shaft and the driven shaft, the input end of the driving shaft is connected with the motor shaft of the three-phase asynchronous motor through a coupling; the driving shaft and the driven shaft are connected to the pump body and the pump cover, The main and driven gears divide the inner cavity of the pump body into an oil suction chamber and an oil pressure chamber, and there are oil inlets and oil outlets on both sides of the pump body.

Description

Marine oil pump unit

technical field

The utility model relates to an oil delivery pump, in particular to a marine oil delivery pump unit.

Background technique

With the production and development of large-tonnage ships for ocean transportation and ocean fishing, more and more powerful gearboxes are used on ship machinery, and the supporting oil pumps are required to have the advantages of large flow, low noise, and stable transmission. A Chinese patent discloses a high-power marine gearbox (authorized announcement number: CN 201078440Y), which is mainly composed of a box body, an input shaft component, a drive shaft for driving, a drive shaft for reversing and an output shaft component, an input shaft, a drive shaft for driving The transmission shaft and output shaft of reversing drive are respectively installed on the box through bearings, the front end of the input shaft is connected with the power through the input flange and high elastic coupling, the input gear is sleeved on the input shaft through interference fit; the clutch gear is through the tight The matching bolts are fixed on the car cylinder, and the car cylinder is integrated with the right-hand clutch housing gear and the clutch housing flange; the car and reverse clutches are supported on the left side of the bearing, and the right side is supported on the bearing; the external friction on the clutch The disc is connected with the outer gear of the left-handed clutch and the outer gear of the right-handed clutch, and the inner friction plate is connected with the friction plate seat; there is a piston on one side of the clutch, and a spring is installed inside, and the piston passes through the hydraulic oil chamber of the forward oil cylinder and the reverse oil cylinder and the hydraulic control system The friction plate seat and the transmission shaft are connected through a key plus interference, and the transmission gear and the transmission shaft are integrated; the two transmission gears of the car and the reverse are respectively meshed with the output gear, and the output gear is shrunk on the output shaft, and the output The shaft is externally connected to the output flange and the stern shaft of the ship; the spring installed in the clutch is a disc spring with a nonlinear characteristic curve. The disc spring is composed of five disc springs. The seat cover is connected with the guide ring seat cover through left and right spiral threads, and the guide ring seat cover is fixed on the oil cylinder body. However, the gear box with this structure does not have an emergency device that can replace the pump when the oil pump on the gear box breaks down during the voyage of the ship, and cannot ensure the safe operation of the ship.

Utility model content

The utility model provides a marine oil delivery pump unit, which mainly solves the problem in the prior art that when the oil pump on the gear box breaks down during the voyage of the ship, there is no emergency device that can replace the pump and cannot ensure the safety of the ship. Technical issues such as safe operation.

The above-mentioned technical problems of the utility model are mainly solved by the following technical solutions:

The marine oil delivery pump unit of the utility model includes a helical gear oil pump, the helical gear oil pump is connected with a three-phase asynchronous motor, and the helical gear oil pump includes a pump body, a pump cover, a driving shaft, a driven shaft, a driving gear, and a driven gear , the driving gear and the driven gear are installed on the driving shaft and the driven shaft respectively, the input end of the driving shaft is connected with the motor shaft of the three-phase asynchronous motor through a coupling; the driving and driven shafts are connected to the pump body and the pump cover, The main and driven gears are meshed and connected. The main and driven gears divide the inner chamber of the pump body into an oil suction chamber and an oil pressure chamber. There are oil inlets and oil outlets on both sides of the pump body, and an oil return hole is provided in the pump body. The power source of the motor is transmitted to the oil pump through the coupling. The motor is a special marine motor, generally a fully enclosed self-fan-cooled marine three-phase cage asynchronous motor. The driving shaft and the driving gear are connected by a key, the driven shaft and the driven gear are connected by a shrink fit, and the pump body and the pump cover are fixed and connected as a whole by hexagon socket screws.

As a preference, a coupling seat is fixed between the helical gear oil pump and the three-phase asynchronous motor, and the coupling includes an oil pump coupling connected with the helical gear oil pump, a motor coupling connected with the three-phase asynchronous motor, and the oil pump The shaft coupling and the motor coupling are placed in the coupling seat. The connecting seat makes the power transmission environment between the motor and the oil pump safe and stable. To achieve the purpose of safe and stable operating environment, and the connection is positioned through the seam, and the connection is simple and reliable.

Preferably, the oil pump coupling is connected with the motor coupling through a star-shaped elastic block. This can greatly reduce the assembly accuracy requirements for parts.

Preferably, a composite bearing is connected between the pump body, the pump cover and the shaft body of the drive shaft, and a rolling bearing is connected between the pump cover and the input end of the drive shaft. This makes the rotation of the drive shaft smoother.

Preferably, the input end of the driving shaft is sealed with a skeleton oil seal. This increases the stability and reliability of the driving shaft when it works.

As a preference, the oil delivery pump unit adopts a B35 structure motor. The motor is small in size and reliable in structure.

Therefore, the utility model has the characteristics of large flow, low noise, and stable transmission; the utility model also has the characteristics of a simple structure of the coupling device, small size, safe and reliable use, and is very in line with the special requirements of modern marine machinery with compact installation space.

Description of drawings

Accompanying drawing 1 is a kind of structural representation of the utility model;

Accompanying drawing 2 is a kind of structural representation of the utility model helical gear oil pump;

Accompanying drawing 3 is the structural representation of the end face of the helical gear oil pump of the present utility model;

Accompanying drawing 4 is the A-A sectional structure schematic diagram of Fig. 3;

Accompanying drawing 5 is the sectional structure schematic diagram of the utility model helical gear oil pump;

Accompanying drawing 6 is a kind of working diagram of helical gear oil pump of the present utility model.

Parts, parts and numbers in the figure: helical gear oil pump 1, three-phase asynchronous motor 2, pump body 3, pump cover 4, driving shaft 5, driven shaft 6, driving gear 7, driven gear 8, oil suction chamber 9, Oil pressure chamber 10, oil inlet 11, oil outlet 12, coupling seat 13, oil pump coupling 14, motor coupling 15, star-shaped elastic block 16, composite bearing 17, rolling bearing 18, skeleton oil seal 19, oil return hole 20.

Detailed ways

The technical solutions of the present utility model will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

Embodiment: The marine oil delivery pump unit of this example, as shown in FIG. The motor is a special marine motor, a fully enclosed self-fan-cooled marine three-phase cage asynchronous motor. As shown in Figure 2, Figure 3, Figure 4, Figure 5, and Figure 6, the helical gear oil pump mainly includes a pump body 3, a pump cover 4, a driving shaft 5, a driving gear 7, a driven shaft 6, and a driven gear 8. A composite bearing 17 is connected between the pump cover 4 and the shaft body of the drive shaft 5 , a rolling bearing 18 is connected between the pump cover 4 and the input end of the drive shaft 5 , and a skeleton oil seal 19 is sealed at the input end of the drive shaft 5 . The driving and driven shafts connect the pump body 3 and the pump cover 4, the driving gear 7 and the driven gear 8 are installed on the driving shaft 5 and the driven shaft 6 respectively, and the driving gear 7 and the driven gear 8 are engaged and connected. The pair of meshing driving and driven gears divide the inner cavity of the pump body into an oil suction chamber 9 and an oil pressure chamber 10, and there are oil inlets 11 and oil outlets 12 on both sides of the pump body. An oil return hole 20 is arranged in the pump body. The coupling device mainly includes a coupling seat 13 , an oil pump coupling 14 and a motor coupling 15 . The helical gear oil pump is installed on the coupling base 13, the coupling base is installed on the three-phase asynchronous motor 2, the helical gear oil pump is installed on the coupling base, the oil pump and the motor are connected through a coupling, and the power source of the motor is transmitted to the oil pump.

When in use, when the three-phase asynchronous motor 2 is started, the power source drives the oil pump driving shaft 5 to rotate through the motor coupling 15 and the oil pump coupling 14, and the pressure oil enters the gearbox hydraulic system through the oil pipe. As shown in Figure 6, the driving gear 7 rotates in the direction of the arrow, and the meshed gear teeth in the oil suction chamber 9 gradually disengage to increase the sealing volume and form a partial vacuum. The oil enters from the oil inlet 11 through the oil pipe under the action of atmospheric pressure. In the oil suction chamber 9, the gear teeth mesh successively, and the volume decreases when the gear teeth enter the space between the teeth. The oil brought from the oil suction chamber 9 to the pressure oil chamber 10 is pressed out of the pump from the oil outlet 12, and enters the hydraulic system of the gear box through the oil pipe. .

The above is only a specific embodiment of the utility model, but the structural features of the utility model are not limited thereto, and any changes or modifications made by those skilled in the art within the scope of the utility model are covered by the utility model. In the scope of the new patent.

Claims (6)

1. a feeding oil pump peculiar to vessel, comprise helical gear oil pump (1), it is characterized in that described helical gear oil pump (1) is connected with threephase asynchronous machine (2), helical gear oil pump (1) includes the pump housing (3), pump cover (4), driving shaft (5), driven shaft (6), driving gear (7), driven gear (8), driving gear and driven gear are installed on driving shaft and driven shaft respectively, and the input end of driving shaft is connected with the motor shaft of threephase asynchronous machine by coupling; Master and slave moving axis connects the pump housing and pump cover, be connected with a joggle between driving and driven gear, pump housing inner chamber is divided into oil sucting cavity (9) and pumping cavity (10) by driving and driven gear, and there are filler opening (11) and oil outlet (12) in pump housing both sides, are provided with spill port (20) in the pump housing.

2. feeding oil pump peculiar to vessel according to claim 1, it is characterized in that being fixed with connection seat (13) between described helical gear oil pump (1) and threephase asynchronous machine (2), coupling includes the oil pump coupling (14) be connected with helical gear oil pump (1), the motor coupler (15) be connected with threephase asynchronous machine (2), and oil pump coupling, motor coupler are placed in connection seat (13).

3. feeding oil pump peculiar to vessel according to claim 2, is characterized in that described oil pump coupling (14) is connected with motor coupler (15) by star elastomer block (16).

4. the feeding oil pump peculiar to vessel according to claim 1 or 2 or 3, it is characterized in that the described pump housing (3), between pump cover (4) and the axle body of driving shaft (5), be connected with composite bearing (17), between the input end of pump cover (4) and driving shaft (5), be connected with rolling bearing (18).

5. the feeding oil pump peculiar to vessel according to claim 1 or 2 or 3, is characterized in that the input end of described driving shaft (5) is sealed with outside framework oil seal (19).

6. the feeding oil pump peculiar to vessel according to claim 1 or 2 or 3, is characterized in that described feeding oil pump adopts B35 structural electromotor.