Balance shaft axial thrust device
A technology of balancing shaft and thrust, applied in the direction of machine/engine, mechanical equipment, etc., can solve the problem that the positioning pin hole cannot be arranged or cannot be arranged, and achieve the effect of favorable axial space arrangement, space saving and compact structure
Active Publication Date: 2015-12-09
CHERY AUTOMOBILE CO LTD
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AI Technical Summary
Problems solved by technology
Usually the circumferential positioning of the balance weight is to process the positioning pin on the end face of the balance shaft, but when the diameter of the journal is small, the positioning pin hole cannot be arranged, so the usual circumferential positioning method cannot be used
Method used
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[0029] The specific implementation manner of the present invention will be described in further detail below by describing the best embodiment with reference to the accompanying drawings.
[0030] Such as Figure 1 to Figure 7 As shown, in the axial thrust device of the balance shaft, the balance shaft 9 is installed on the bearing seat on the engine block 1, and the two ends of the balance shaft 9 are sleeved on the bearing seat to limit the axial movement of the balance shaft 9. Thrust retaining ring, on balance shaft 9, establish the thrust stepped surface that fits with the end face of thrust retaining ring.
[0031] The bearing seat is divided into a front bearing seat and a rear bearing seat located on the engine block 1, and a U-shaped installation groove 16 for installing a thrust retaining ring is arranged on the bearing seat. Correspondingly, the U-shaped installation groove 16 is divided into a front concave Groove and rear groove; The thrust retaining ring is divi...
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The invention discloses an axial thrust device for a balance shaft. The balance shaft is arranged on a bearing block on an engine cylinder, and thrust retaining rings which are arranged on the bearing block and are used for limiting the axial movement of the balance shaft are sleeved at the two ends of the balance shaft; and thrust step surfaces attached to the end surfaces of the thrust retaining rings are arranged on the balance shaft. According to the axial thrust device for the balance shaft, the thrust retaining ring is simple in structure, and is much lower in cost compared with a thrust piece; the thrust retaining rings are arranged on the bearing seat for supporting the balance shaft end, so that the space is greatly saved, and thus the axial space arrangement of the balance shaft is utilized, and the system structure of the balance shaft is compact; and the thrust retaining rings do not interfere with the movement of the balance shaft, the sticking phenomenon does not occur, and the balance shaft system runs smoothly.
Description
technical field [0001] The invention relates to an automobile engine, and more particularly relates to an axial thrust device of a balance shaft on an automobile engine. Background technique [0002] The engine balance shaft system is used to balance the reciprocating unbalanced force or moment of the crank connecting rod system. Generally, the balance shaft system is not affected by the axial force, but due to the influence of engine vibration, timing chain and accessory system, the balance shaft system needs to increase the axial thrust structure. [0003] Generally, the engine adopts the following two methods to meet the thrust function of the balance shaft: one is a single thrust plate with double thrust surfaces as the thrust device, and the thrust plate is fixed on the cylinder block. The advantage of this design is that it has higher precision. , to meet the design requirements. The disadvantage is that parts such as thrust plates and screws for fixing the thrust pl...
Claims
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IPC IPC(8): F02B75/06
Inventor 李为松张欣林
Owner CHERY AUTOMOBILE CO LTD