CN201582107U - Rotor oil pump with flat square direct drive of engine crankshaft - Google Patents

Abstract

The utility model relates to a rotor lubricant pump, in particular to a rotor lubricant pump which is directly transmitted by the flat square of an engine crankshaft and is matched with a CA400 engine. The rotor lubricant pump consists of a pump body, a pump cover, an internal rotor and an external rotor; the external rotor is arranged in a rotor hole of the pump body; and the external rotor is in movable fit with the rotor hole of the pump body. The internal rotor is arranged in a cavity of the external rotor; and the cavities of the internal rotor and the external rotor are in movable fit with each other. The pump cover is arranged on the pump body of the internal rotor part and the external rotor part by a screw; and after the pump cover is installed, the rotor is ensured to rotate flexibly. The shaft hole of the internal rotor is a flat square hole; two beelines of the flat square hole are provided with a semi-round groove respectively; and the flat square hole is matched with the crankshaft flat square of the CA400 engine.

Description

Rotor oil pump with flat square direct drive of engine crankshaft

technical field

The utility model relates to a rotor oil pump, in particular to a rotor oil pump matched with a CA400 engine.

Background technique

CA400 engine is a product newly developed and designed by the host unit. It needs an oil pump to match it, and requires the oil pump to provide lubricating oil with stable oil pressure, abundant flow and reliable working performance for the engine under various working conditions. Most of the existing oil pumps are driven by gears, chains, and toothed belts. Due to the large number of parts in the transmission system, the consumption of materials for these parts, as well as the processing and manufacturing hours and production costs have also increased. There is a risk of accident due to damage of some parts. In addition, these components increase the weight of the engine, increase the loss of the engine's own power, and bring serious unfavorable factors to the energy saving and consumption reduction of the engine.

Contents of the invention

The purpose of this utility model is to overcome the above-mentioned deficiency of prior art and provide a kind of rotor oil pump that adopts engine crankshaft flat square direct drive specially for CA400 type engine.

The technical scheme of the utility model is: a rotor oil pump adopting the flat square direct transmission of the engine crankshaft, which is composed of a pump body, a pump cover, an inner rotor and an outer rotor. The outer rotor is arranged in the rotor hole of the pump body, and the outer rotor and the rotor hole of the pump body adopt dynamic fit. The inner rotor is arranged in the mold cavity of the outer rotor, and the mold cavities of the inner rotor and the outer rotor adopt moving fit. The pump cover is installed on the pump body of the inner and outer rotors through screws. After the pump cover is installed, the rotor should be guaranteed to rotate flexibly. The shaft hole of the inner rotor is a flat square hole, and two straight sides of the flat square hole are respectively provided with a semicircular groove, and the flat square hole fits flatly with the crankshaft of the CA400 type engine.

The rotor oil pump provided by the utility model, which is directly driven by the flat square engine crankshaft, is installed at the front end of the CA400 engine body. The crankshaft of the type engine directly drives the rotor oil pump to work.

Compared with the prior art, the utility model has the following characteristics:

1. The rotor oil pump provided by the utility model, which adopts the direct drive of the engine crankshaft, is specially designed according to the supporting requirements of the CA400 engine lubrication system, and can ensure that the CA400 engine can provide stable oil pressure, Lubricating oil with abundant flow and reliable performance.

2. The rotor oil pump provided by the utility model adopts the flat square direct transmission of the engine crankshaft, which saves the corresponding parts of the transmission system due to the direct transmission of the crankshaft. Therefore, the structure is simple, the design is novel, and the installation is convenient, which improves the working stability, reliability, safety and service life of the oil pump. At the same time, steel materials are saved, the internal friction of its own weight and engine power is reduced, and the production cost in processing and manufacturing is reduced.

The detailed structure of the present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Accompanying drawing 1 is the structural representation of the rotor oil pump that adopts the flat square direct drive of the engine crankshaft provided by the utility model;

Accompanying drawing 2 is A-A sectional view among accompanying drawing 1;

Accompanying drawing 3 is the structure diagram of outer rotor;

Accompanying drawing 4 is B-B sectional view among accompanying drawing 3;

Accompanying drawing 5 is the structural diagram of inner rotor;

Accompanying drawing 6 is C-C sectional view among accompanying drawing 5.

Detailed ways

As shown in the accompanying drawings: a rotor oil pump that adopts the flat square direct drive of the engine crankshaft, which consists of a pump body 1, a pump cover 2, an inner rotor 3 and an outer rotor 4. The outer rotor 4 is arranged in the rotor hole of the pump body 1, and the outer rotor 3 and the rotor hole of the pump body 1 adopt moving fit. The inner rotor 3 is arranged in the mold cavity of the outer rotor 4, and the mold cavities of the inner rotor 3 and the outer rotor 4 adopt moving fit. The pump cover 2 is installed on the pump body 1 at the inner and outer rotor parts through screws. After the pump cover 2 is installed, the rotor should be guaranteed to rotate flexibly. The shaft hole of the inner rotor 3 is a flat square hole 3-1, the two straight sides of the flat square hole 3-1 are respectively provided with a semicircular groove 3-1-1, the flat square hole 3-1 and The flat square fit of the crankshaft of the CA400 engine.

Claims (2)

1. direct drive rotor engine oil pump of the flat side of employing engine crankshaft, it is characterized in that: it is made up of the pump housing, pump cover, internal rotor, external rotor; External rotor is located in the rotor hole of the pump housing, and the rotor hole of the external rotor and the pump housing adopts movingly; Internal rotor is located in the die cavity of external rotor, and the die cavity of internal rotor and external rotor adopts movingly; Pump cover is installed in by screw on the pump housing at inner and outer rotors position, and pump cover will guarantee that rotor rotation is flexible after installing.

2. the direct drive rotor engine oil pump of the flat side of a kind of employing engine crankshaft according to claim 1, it is characterized in that: the axis hole of internal rotor is a flat square hole, be respectively equipped with a semicircular groove on two straight flanges of flat square hole, the bent axle of flat square hole and CA400 h type engine h flat side cooperate.

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