Diesel engine motor direct connection mechanism

Abstract

The invention provides a diesel engine motor direct connection mechanism. A diesel engine end cover is mounted on an engine body; the crankshaft rotor connecting shaft is fixed to a motor rotor, and the crankshaft rotor connecting shaft and a center hole of the diesel engine end cover are sealed through two oil seals. The motor end cover middle hole and the diesel engine end cover middle hole flange have matching requirements; the flange of the middle hole of the end cover of the diesel engine and the middle hole of the end cover of the diesel engine meet the requirement of coaxiality phi 0.03, and the middle hole of the end cover of the motor and the connecting shaft of the crankshaft rotor can meet the requirement of coaxiality phi 0.06; a sealing ring is arranged on a flange combination surface of the motor end cover middle hole and the diesel engine end cover middle hole; the motor end cover is fixed with the motor stator through the motor shell, and the motor stator and the axis of a middle hole of the motor end cover meet the requirement of coaxiality phi 0.02; and finally, the motor stator and the crankshaft rotor connecting shaft meet the requirement of coaxiality phi 0.08. According to the invention, the coaxiality between the motor stator and the crankshaft rotor connecting shaft is ensured, and the reliable sealing and connection problems are solved.

Description

Technical Field

[0001] The invention belongs to the field of diesel motors, and in particular relates to a diesel motor direct connection mechanism. Background Art

[0002] The diesel engine motor direct connection mechanism uses the motor rotor to replace the diesel engine flywheel, and the motor rotor is directly connected to the diesel engine crankshaft, and the diesel engine crankshaft directly drives the motor rotor to rotate. This mechanism eliminates the transition device between the diesel engine flywheel and the diesel engine motor, reduces the weight of the diesel-electric hybrid power unit, and improves the power density of the diesel-electric power unit. However, the current diesel-electric direct connection mechanism, during the start-up process of the power unit, during high-load operation, and in harsh external working environments, due to the influence of engine vibration and torque, generally has problems such as changes in the air between the rotor and the stator, reduced power generation efficiency, oil leakage, and unreliable connection. Summary of the invention

[0003] In view of this, the present invention aims to propose a diesel engine motor direct connection mechanism to ensure the coaxiality between the motor stator and the crankshaft rotor connecting shaft, as well as reliable sealing and connection issues.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] A diesel engine motor direct connection mechanism comprises a crankshaft rotor connecting shaft, a motor end cover, a motor housing, a motor stator, a motor rotor and a flange; the diesel engine end cover is mounted to the engine body, and the two are positioned by an upper positioning pin and a lower positioning pin;

[0006] The crankshaft rotor connecting shaft passes through the center hole of the diesel engine end cover and is fixed to the motor rotor, and the crankshaft rotor connecting shaft and the center hole of the diesel engine end cover are sealed by two oil seals;

[0007] The middle hole flange of the diesel engine end cover and the matching surface of the middle hole of the motor end cover are provided with a sealing ring, and the motor end cover is fixed to the motor stator through the motor housing;

[0008] The middle hole of the motor end cover and the middle hole flange of the diesel engine end cover have matching requirements. The middle hole flange of the diesel engine end cover is coaxial with the middle hole of the diesel engine end cover. The middle hole flange of the diesel engine end cover and the middle hole of the diesel engine end cover meet the coaxiality requirement of Φ0.03. The middle hole of the motor end cover and the crankshaft rotor connecting shaft meet the coaxiality requirement of Φ0.06.

[0009] The motor end cover is fixed to the motor stator through the motor housing, and the motor stator and the middle hole axis of the motor end cover meet the requirement of coaxiality Φ0.02;

[0010] The connecting shaft between the motor stator and the crankshaft rotor meets the coaxiality requirement of Φ0.08.

[0011] Furthermore, a sealing ring is provided between the flange of the middle hole of the diesel engine end cover and the mating surface of the middle hole of the motor end cover.

[0012] Furthermore, the two oil seals are respectively a No. 1 crankshaft oil seal and a No. 2 crankshaft oil seal.

[0013] Compared with the prior art, the diesel engine motor direct connection mechanism described in the present invention has the following advantages:

[0014] (1) The present invention provides a direct connection mechanism between a diesel engine and a motor. The diesel engine end cover adopts two crankshaft oil seals and is equipped with a sealing ring. The No. 1 crankshaft oil seal ensures that the diesel engine oil or exhaust gas will not enter the motor. The No. 2 crankshaft oil seal and the sealing ring play a dual protective role, ensuring that in a harsh external environment, no pollutants will enter the motor or adhere to the crankshaft connecting shaft to cause wear or corrosion of parts.

[0015] (2) The diesel engine motor direct connection mechanism of the present invention structurally ensures the coaxiality between the motor stator and the crankshaft rotor connecting shaft, as well as reliable sealing and connection issues. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 This is a cross-sectional view of a diesel engine motor direct connection mechanism according to an embodiment of the present invention.

[0018] Description of reference numerals:

[0019] 1. No. 1 crankshaft oil seal; 2. No. 2 crankshaft oil seal; 3. Sealing ring; 4. Diesel engine end cover; 5. Upper locating pin; 6. Motor end cover; 7. Motor housing; 8. Motor stator; 9. Motor rotor; 10. Lower locating pin; 11. Flange; 12. Diesel engine crankshaft rotor connecting shaft. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0023] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0024] A diesel engine motor direct connection mechanism, such as Figure 1 As shown, it includes a crankshaft rotor connecting shaft 12, a motor end cover 6, a motor housing 7, a motor stator 8, a motor rotor 9 and a flange 11; the diesel engine end cover 4 is installed to the engine body, and the two are positioned by an upper positioning pin 5 and a lower positioning pin 10; thereby ensuring the position requirements of the middle hole of the diesel engine end cover 4 and the diesel engine body, and the coaxiality requirements of the middle hole of the diesel engine end cover 4 and the crankshaft rotor connecting shaft;

[0025] The crankshaft rotor connecting shaft 12 passes through the center hole of the diesel engine end cover 4 and is fixed to the motor rotor 9;

[0026] The motor end cover 6 is fixed to the motor stator 8 through the motor housing 7, and the coaxiality of the motor stator 8 and the middle hole of the motor end cover 6 meets the requirement of Φ0.02;

[0027] The middle hole flange 11 of the diesel engine end cover is coaxial with the middle hole of the diesel engine end cover 4. The middle hole of the motor end cover and the middle hole flange of the diesel engine end cover have matching requirements. The middle hole flange of the diesel engine end cover and the middle hole of the diesel engine end cover meet the coaxiality requirement of Φ0.03, and the middle hole of the motor end cover and the crankshaft rotor connecting shaft meet the coaxiality requirement of Φ0.06;

[0028] The motor stator 8 and the crankshaft rotor connecting shaft meet the requirement of coaxiality Φ0.08, so when the crankshaft rotor connecting shaft drives the rotor to rotate, the air between the motor stator 8 and the rotor can be guaranteed to be stable.

[0029] Preferably, a sealing ring 3 is provided between the middle hole of the motor end cover 6 and the flange 11 of the middle hole of the diesel engine end cover; the crankshaft oil seal includes a No. 1 crankshaft oil seal 1 and a No. 2 crankshaft oil seal 2; the No. 1 crankshaft oil seal 1 ensures that the diesel engine oil or exhaust gas will not enter the interior of the motor; the No. 2 crankshaft oil seal 2 and the sealing ring 3 play a dual protective role, ensuring that in the harsh external environment, no pollutants will enter the interior of the motor, or adhere to the crankshaft connecting shaft, causing wear or corrosion of parts.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A diesel engine motor direct connection mechanism, characterized in that: It includes a diesel engine end cover, a crankshaft rotor connecting shaft, a motor end cover, a motor housing, a motor stator and a motor rotor; The diesel engine end cover is mounted on the engine body, and the two are positioned by an upper positioning pin and a lower positioning pin; The crankshaft rotor connecting shaft passes through the center hole of the diesel engine end cover and is fixed to the motor rotor, and the crankshaft rotor connecting shaft and the center hole of the diesel engine end cover are sealed by two oil seals; The middle hole of the motor end cover and the middle hole flange of the diesel engine end cover have matching requirements; the middle hole flange of the diesel engine end cover and the middle hole of the diesel engine end cover meet the coaxiality requirement of Φ0.03, and the middle hole of the motor end cover and the crankshaft rotor connecting shaft can meet the coaxiality requirement of Φ0.06; The motor end cover is fixed to the motor stator through the motor housing, and the motor stator and the middle hole axis of the motor end cover meet the requirement of coaxiality Φ0.02; The connecting shaft between the motor stator and the crankshaft rotor meets the coaxiality requirement of Φ0.

08.

2. A diesel engine motor direct connection mechanism according to claim 1, characterized in that: The middle hole flange of the diesel engine end cover and the matching surface of the middle hole of the motor end cover are provided with a sealing ring.

3. A diesel engine motor direct connection mechanism according to claim 1, characterized in that: The two oil seals are crankshaft oil seal No. 1 and crankshaft oil seal No. 2.

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