CN2818850Y - Lubricating oil pump of gearbox - Google Patents

Abstract

The utility model relates to a lubricating oil pump for a gearbox. The end part of a rotor chamber of a pump body is provided with a sealing ring; the pump body is provided with an oil inlet and an oil outlet grooves, and a pressure limiting valve communicated with the oil inlet and the oil outlet grooves; a steel ball, a spring and a blanking cover are assembled in a hole of the pressure limiting valve; one end of a pump shaft is fixed with rotor in a lubricating oil pump, and the other end penetrates through a pump shaft hole on the pump body, drives and is connected with the outside world by a convex handle; the end surface of a pump outlet is sealed by using a shaped ring or other forms, or is directly contacted with and sealed by a plane; the oil outlet side of the rotor chamber of the pump body is provided with an oil overflow hole. The utility model has the advantages of complete machine reliability improvement of the gearbox, running flexibility improvement of a lubricating oil pump, and low cost; the condition that driving teeth of the gearbox are damaged when a lubricating oil pump assembly fails can be avoided.

Description

The gear-box lubricating oil pump

Technical field

The utility model relates to a kind of lubricating pump, is particularly useful for the lubrication oil pump mechanism of automobile gearbox band cycloid rotor assembly

Background technique

When present existing automobile gearbox does not consider that with lubricating pump mechanism lubricating oil pump assembly produces fault, disconnect lubricating pump and be connected, avoid damaging the gearbox driving gear with gearbox.

Summary of the invention

The purpose of this utility model is to provide a kind of gear-box lubricating oil pump, its can be under certain moment of torsion in driving shaft and the internal rotor axis hole generation trackslip or the driving shaft driving handle fractures, disconnecting lubricating pump is connected with gearbox, make when avoiding lubricating oil pump assembly to produce fault, damage the gearbox driving gear.

The technical solution of the utility model is achieved in that the gear-box lubricating oil pump, is a kind of positive displacement ring gear machinery, comprising: a housing that comprises gear chamber; This housing comprises the inlet of at least one working fluid and the discharge gate of at least one working fluid; And capping; An internal rotor that is contained in the gear chamber, this internal rotor is fixed on the axle, rotates and comprises external rotor around running shaft; External rotor than the many at least teeth of internal rotor and and internal rotor be meshed and expand and the fluid compartment of contraction to form, when inner and outer rotors relatively rotates just with working fluid from least one inlet at least one discharge gate that leads, it is characterized in that: seal ring is equipped with in the end of the rotor chamber of the pump housing; And the pressure-limit valve that on the pump housing, offers the turnover oil groove and communicate with it, be equipped with steel ball in the pressure limiting valve opening, spring and blanking cover; Pump shaft one end and oil pump internal rotor fix; The pump shaft hole that the other end passes on the pump housing is connected driving with protruding handle with the outside; The pump discharge end face seals or directly seals with plane contact with special-shaped ring or other form; The fuel-displaced side of pump housing rotor chamber has the oil spilling hole.

Good effect of the present utility model is to have improved the gearbox whole aircraft reliability, and going slick property of lubricating pump reduces cost, and in the time of avoiding the lubricating oil pump assembly fault, damages the gearbox driving gear.Promptly under certain moment of torsion, produce in driving shaft and the internal rotor and trackslip or the driving shaft driving handle fractures, disconnect lubricating pump and be connected when avoiding the lubricating oil pump assembly fault damage gearbox driving gear with gearbox.

Description of drawings

Fig. 1 is the utility model gear-box lubricating oil pump structure schematic representation

Fig. 2 is the local enlarged diagram of the utility model gear-box lubricating oil pump pressure-limit valve

Fig. 3 is the enlarged diagram of blanking cover on the utility model gear-box lubricating oil pump pressure-limit valve

Embodiment

Below in conjunction with accompanying drawing the utility model is further described: as shown in Figure 1, the gear-box lubricating oil pump is a kind of positive displacement ring gear machinery, comprising: a housing that comprises gear chamber; This housing comprises the inlet of at least one working fluid and the discharge gate of at least one working fluid; And capping 2; An internal rotor 3 that is contained in the gear chamber, this internal rotor 3 are fixed on the axle 5, rotate and comprise external rotor 4 around running shaft; External rotor 4 than the many at least teeth of internal rotor 3 and and internal rotor 3 be meshed and expand and the fluid compartment of contraction to form, when inner and outer rotors relatively rotates just with working fluid from least one inlet at least one discharge gate that leads; It is characterized in that: seal ring 6 is equipped with in the end of the rotor chamber of the pump housing 1; And the pressure-limit valve 7 that on the pump housing 1, offers the turnover oil groove and communicate with it, be equipped with steel ball 9 in the pressure limiting valve opening, spring 8 and blanking cover 10; Pump shaft one end and oil pump internal rotor 3 fix; The pump shaft hole that the other end passes on the pump housing 1 is connected driving with protruding handle with the outside; The pump discharge end face seals or directly seals with plane contact with special-shaped ring or other form; The fuel-displaced side of the pump housing 1 rotor chamber has oil spilling hole 11.The gear-box lubricating oil pump is to adopt the cycloid rotor profile of tooth (1a, 2b), the engagement by cycloid rotor makes rotor chamber form an oil-feed district and an oil extraction district.Thereby form oil suction and oil extraction function by the continuous running of rotor.

Claims (1)

1, gear-box lubricating oil pump is a kind of positive displacement ring gear machinery, comprising: a housing that comprises gear chamber; This housing comprises the inlet of at least one working fluid and the discharge gate of at least one working fluid; And capping (2); An internal rotor (3) that is contained in the gear chamber, this internal rotor (3) are fixed on the axle (5), rotate and comprise external rotor (4) around running shaft; External rotor (4) than the many at least teeth of internal rotor (3) and and internal rotor (3) be meshed and expand and the fluid compartment of contraction to form, when inner and outer rotors relatively rotates just with working fluid from least one inlet at least one discharge gate that leads; It is characterized in that: seal ring (6) is equipped with in the end of the rotor chamber of the pump housing (1); And the pressure-limit valve (7) that on the pump housing (1), offers the turnover oil groove and communicate with it, pressure-limit valve (7) is equipped with steel ball (9) in the hole, spring (8) and blanking cover (10); Pump shaft one end and oil pump internal rotor (3) fix; The pump shaft hole that the other end passes on the pump housing (1) is connected driving with protruding handle with the outside; The pump discharge end face seals or directly seals with plane contact with special-shaped ring or other form; The fuel-displaced side of the pump housing (1) rotor chamber has oil spilling hole (11).

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