CN220539854U - Parallel light-weight gearbox oil pump - Google Patents

Abstract

The utility model belongs to a hydraulic element in the mechanical industry, and particularly relates to a parallel light gearbox oil pump. The pump body is characterized in that a high-pressure pump cavity is arranged on one side of the pump body, a high-pressure pump inner rotor positioning hole is formed in the high-pressure pump cavity, a low-pressure pump cavity is formed on the other side of the pump body, a low-pressure pump inner rotor positioning hole is formed in the low-pressure pump cavity, outer teeth of the high-pressure pump inner rotor are in meshed transmission connection with inner teeth of the high-pressure pump outer rotor, inner spline positioning shaft ends of the low-pressure pump inner rotor are matched and penetrated in a clearance mode in the low-pressure pump inner rotor positioning hole, outer teeth of the low-pressure pump inner rotor are in meshed transmission connection with inner teeth of the low-pressure pump outer rotor, a pressure sensor fixing oil port is formed in an oil outlet of the pump cover, and inner threads are formed in the pressure sensor fixing oil port and used for fixing the pressure sensor. The hydraulic oil supply device has a simple structure, can simultaneously provide required oil for a gearbox executing system, a gearbox motor, a clutch and a bearing, shortens an oil conveying pipeline and reduces cost.

Description

Parallel light-weight gearbox oil pump

Technical Field

The utility model belongs to a hydraulic element in the mechanical industry, and particularly relates to a parallel light gearbox oil pump.

Background

When the automobile runs, the internal gear set of the automobile gearbox is easy to generate heat during high-speed running, and lubricating oil liquid is required to be continuously supplied to the gearbox, otherwise, the service life of the gearbox can be seriously influenced. The oil pump can reduce the temperature of the gearbox and lubricate the gear set in the gearbox by providing oil for the gearbox, and when the automobile runs, the gearbox execution system has mechanical action for serving the automobile speed change, and at the moment, high-pressure oil is required to be provided for the gearbox execution system to be used as power or assistance for the execution element to complete the action. Thus, a high-pressure oil pump and a low-pressure oil pump are required to be arranged in the gearbox independently, and the two oil pumps are arranged independently, so that the size and the weight of the gearbox are increased due to the large occupied space.

Disclosure of Invention

The utility model aims to overcome the technical defects and provide the parallel light gearbox oil pump which has a simple structure, shortens an oil conveying pipeline and reduces the cost.

The technical scheme adopted for solving the technical problems is as follows: the parallel light gearbox oil pump comprises a pump cover, a pump body, a fastening bolt and a positioning pin, and is characterized in that one side of the pump body is provided with a high-pressure pump cavity, a high-pressure pump inner rotor positioning hole is arranged in the high-pressure pump cavity, the other side of the pump body is provided with a low-pressure pump cavity, a low-pressure pump inner rotor positioning hole is arranged in the low-pressure pump cavity, the middle clearance fit of the high-pressure pump inner rotor positioning hole penetrates through the inner spline positioning shaft end of the high-pressure pump inner rotor, the outer teeth of the high-pressure pump inner rotor are in meshed transmission connection with the inner spline positioning shaft end of the low-pressure pump inner rotor, the outer teeth of the low-pressure pump inner rotor are in meshed transmission connection with the inner teeth of the low-pressure pump outer rotor, and a pressure sensor fixing oil port is arranged at the oil outlet of the pump cover and provided with inner threads for fixing a pressure sensor.

The beneficial effects of the utility model are as follows: the parallel light gearbox oil pump is simple in structure, can simultaneously provide required oil for a gearbox executing system, a gearbox motor, a clutch and a bearing, is compact in structure, reduces occupation of space in a vehicle, shortens an oil conveying pipeline, and reduces cost.

Drawings

The following is a detailed description of embodiments with reference to the accompanying drawings.

Fig. 1 is an exploded view of a parallel lightweight transmission oil pump structure.

Fig. 2 is a block diagram of the pump body of fig. 1.

Fig. 3 is a diagram of the pump cover of fig. 1.

In the figure, 1-pump cover; 1-1-oil inlet; 1-2-oil outlet; 1-3-a fixed oil port of the pressure sensor; 1-4-pump cover locating pin holes; 1-5-pump cover bolt holes; 1-6-a low-pressure pump oil inlet cavity; 1-7-a low-pressure pump oil discharge cavity; 1-8-a high-pressure pump oil inlet cavity; 1-9-a high-pressure pump oil discharge cavity; 2-low pressure pump outer rotor; 3-a low pressure pump inner rotor; 4-a pump body; 4-1-an oil outlet of a low-pressure pump; 4-2-low pressure pump cavity; 4-3-positioning holes of the inner rotor of the low-pressure pump; 4-4-high pressure pump cavity; 4-5-positioning holes of the inner rotor of the high-pressure pump; 4-6-pump body bolt holes; 4-7 of pump body positioning pin holes; 5-a high pressure pump inner rotor; 6-an outer rotor of the high-pressure pump; 7-locating pins; 8-fastening bolts; 9-a high pressure pump inner rotor drive shaft; 10-low pressure pump inner rotor drive shaft.

Description of the embodiments

In the embodiment, referring to fig. 1-3, a pump body 4 of a parallel lightweight gearbox oil pump is respectively provided with a low-pressure pump oil outlet 4-1, a low-pressure pump cavity 4-2, a low-pressure pump inner rotor positioning hole 4-3, a high-pressure pump cavity 4-4, a high-pressure pump inner rotor positioning hole 4-5, a pump body bolt hole 4-6 and a pump body positioning pin hole 4-7, a pump cover 1 of the parallel lightweight oil pump is respectively provided with an oil inlet 1-1, an oil outlet 1-2, a pressure sensor fixing oil port 1-3, a pump cover positioning pin hole 1-4, a pump cover bolt hole 1-5, a low-pressure pump oil inlet cavity 1-6, a low-pressure pump oil outlet cavity 1-7, a high-pressure pump oil inlet cavity 1-8 and a high-pressure pump oil outlet cavity 1-9, and a pressure sensor fixing oil port 1-3 fixes a pressure sensor through internal threads. The middle gap of the high-pressure pump inner rotor positioning hole 4-5 is matched with the inner spline positioning shaft end of the high-pressure pump inner rotor 5, the outer teeth of the high-pressure pump inner rotor 5 are in meshed transmission connection with the inner teeth of the high-pressure pump outer rotor 6, and the inner spline shaft hole of the high-pressure pump inner rotor 5 is in transmission connection with the high-pressure pump inner rotor driving shaft 9. The inner clearance of the low-pressure pump inner rotor positioning hole 4-3 is matched with the inner spline positioning shaft end of the low-pressure pump inner rotor 3 in a penetrating way, the outer teeth of the low-pressure pump inner rotor 3 are in meshed transmission connection with the inner teeth of the low-pressure pump outer rotor 2, and the inner spline shaft hole of the low-pressure pump inner rotor 3 is in transmission connection with the low-pressure pump inner rotor driving shaft 10. The pump body 4 and the pump cover 1 are fixedly connected into a whole through a plurality of fastening bolts 8 penetrating the pump body bolt holes 4-6 and the pump cover bolt holes 1-5, and the pump body 4 and the pump cover 1 are in interference fit penetrating the pump cover positioning pin holes 1-4 and the pump body positioning pin holes 4-7 for limiting. The oil inlet 1-1 is respectively communicated with the low-pressure pump oil inlet cavity 1-6 and the high-pressure pump oil inlet cavity 1-8, the low-pressure pump oil inlet cavity 1-6 is communicated with the low-pressure pump cavity 4-2, the high-pressure pump oil inlet cavity 1-8 is communicated with the high-pressure pump cavity 4-4, the oil outlet 1-2 is communicated with the high-pressure pump oil discharge cavity 1-9, the high-pressure pump oil discharge cavity 1-9 is communicated with the high-pressure pump cavity 4-4, one end of the low-pressure pump oil discharge cavity 1-7 is communicated with the low-pressure pump cavity 4-2, and the other end is communicated with the low-pressure pump oil outlet 4-1.

The working principle of the parallel light gearbox oil pump is as follows: the high-pressure pump inner rotor 5 and the high-pressure pump outer rotor 6 of the parallel light gearbox oil pump are arranged in the high-pressure pump cavity 4-5, the low-pressure pump inner rotor 3 and the low-pressure pump outer rotor 2 are arranged in the low-pressure pump cavity 4-2, the relative positions of the pump body 4 and the pump cover 1 are limited through the positioning pin 7, and the pump body 4 and the pump cover 1 are tightly attached to form a two-piece oil pump by using the fastening bolt 8, so that an oil supply function is realized. The high-pressure pump inner rotor 5 and the low-pressure pump inner rotor 3 in the oil pump are provided with internal splines, and can be matched with the high-pressure pump inner rotor driving shaft 9 and the low-pressure pump inner rotor driving shaft 10 to input power, so that the high-pressure pump inner rotor 5 and the low-pressure pump inner rotor 3 drive the high-pressure pump outer rotor 6 and the low-pressure pump outer rotor 2 to rotate, and the oil pump starts to work. The oil inlet 1-1 of the pump cover 1 of the oil pump is connected with an external oil tank, and negative pressure is generated when the high-pressure pump and the low-pressure pump rotate, so that external oil can be sucked into the oil pump. After oil enters an oil inlet 1-1 of a pump cover 1, the oil enters an oil suction cavity meshed with the external teeth of a high-pressure pump inner rotor 5 and the internal teeth of a high-pressure pump outer rotor 6 of a high-pressure pump respectively through a high-pressure pump oil inlet cavity 1-8 and a low-pressure pump oil inlet cavity 1-6 on the pump cover 1, at the moment, the oil is pumped out by the internal and external rotors of a gear set of the high-pressure pump and the low-pressure pump by utilizing the characteristic of changing the sealing volume, and enters a high-pressure pump oil discharge cavity and a low-pressure pump oil discharge cavity respectively, at the moment, the conveying and pressurizing effects of part of the oil are completed, and the oil pump continuously runs to discharge the oil outside the pump through the high-pressure pump oil discharge cavity 1-9, an oil outlet 1-2, the low-pressure pump oil discharge cavity 1-7 and a low-pressure pump oil outlet 4-1.

Claims (1)

1. The utility model provides a parallelly connected lightweight gearbox oil pump, including pump cover (1), pump body (4), fastening bolt (8), locating pin (7), a serial communication port, pump body (4) one side is equipped with high-pressure pump cavity (4-4), be equipped with high-pressure pump inner rotor locating hole (4-5) in high-pressure pump cavity (4-4), pump body (4) opposite side is equipped with low-pressure pump cavity (4-2), be equipped with low-pressure pump inner rotor locating hole (4-3) in low-pressure pump cavity (4-2), the internal spline locating axle head of high-pressure pump inner rotor (5) is worn to dress in high-pressure pump inner rotor locating hole (4-5) in the clearance fit, the external tooth of high-pressure pump inner rotor (5) is connected with the internal spline locating axle head of high-pressure pump outer rotor (6) in the clearance fit in low-pressure pump inner rotor locating hole (4-3), the external tooth of low-pressure pump inner rotor (3) is connected with the internal spline drive of low-pressure pump outer rotor (2), be equipped with pressure sensor fixed oil port (1-3) in pump cover (1-2), pressure sensor fixed oil port (1-3) are equipped with internal thread sensor for fixing.