CN220705805U

CN220705805U - Supercharger valve transmission shaft

Info

Publication number: CN220705805U
Application number: CN202322501778.8U
Authority: CN
Inventors: 李庆斌; 曹刚; 闫海东; 肖清; 官庆武
Original assignee: Hunan Tianyan Machinery Co Ltd
Current assignee: Hunan Tianyan Machinery Co Ltd
Priority date: 2023-09-14
Filing date: 2023-09-14
Publication date: 2024-04-02
Anticipated expiration: 2033-09-14

Abstract

The utility model provides a supercharger valve transmission shaft which comprises a valve transmission power arm, a shaft sleeve positioning terminal, a transmission shaft cylindrical surface and a rocker arm welding terminal, wherein a plurality of annular grooves are formed in the transmission shaft cylindrical surface at intervals. In the technical scheme, the plurality of annular grooves are formed in the cylindrical surface of the transmission shaft, so that the contact area is reduced, the transmission resistance is reduced, and meanwhile, the plurality of annular grooves are arranged at intervals, so that the leakage amount of waste gas is not increased.

Description

Supercharger valve transmission shaft

Technical Field

The utility model belongs to the technical field of machinery, and particularly relates to a transmission shaft of a supercharger valve.

Background

In order to increase the low-speed torque of the engine, a scroll runner with smaller flow rate is usually adopted, and the expansion ratio of a supercharger is increased to improve the work of a compressor so as to increase the air inflow of the engine. However, using a small volute flow passage tends to cause overspeed of the supercharger at high engine speeds, while increasing pumping loss of the engine.

The deflation valve in the volute is connected with the rocker arm outside the volute through the valve transmission shaft, and the rocker arm rotates to drive the coaxial deflation valve to deflate under the driving of the actuator. On one hand, the valve transmission shaft needs to rotate freely, so that the friction force is small, and a certain gap needs to be reserved between the valve transmission shaft and the shaft sleeve; on the other hand, the high-temperature and high-pressure waste gas in the volute is only allowed to leak outwards by a small amount through the gap of the shaft sleeve, so that the gap between the valve transmission shaft and the shaft sleeve can only be designed to be small. As shown in fig. 1, the conventional valve transmission shaft is a solid cylinder, and has a large contact area with the shaft sleeve, so that resistance to an actuator is large in the process of shaft rotation, thereby affecting the timeliness of the response of the supercharger.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a transmission shaft of a supercharger valve, which can reduce resistance and prevent leakage.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows: a transmission shaft of a supercharger valve comprises a valve transmission shaft arm, a shaft sleeve positioning terminal, a transmission shaft cylindrical surface and a rocker arm welding terminal, wherein a plurality of annular grooves are formed in the transmission shaft cylindrical surface at intervals.

In the technical scheme, the plurality of annular grooves are formed in the cylindrical surface of the transmission shaft, so that the contact area is reduced, the transmission resistance is reduced, and meanwhile, the plurality of annular grooves are arranged at intervals, so that the leakage amount of waste gas is not increased.

In one embodiment, all trenches are independent of each other and do not intersect each other.

In one embodiment, the width and depth of all trenches are the same.

In one embodiment, the grooves are rectangular, trapezoidal, or other irregular polygonal in cross-section.

In one embodiment, the number of the grooves is 3-8.

In one embodiment, all the grooves are uniformly spaced in the axial direction.

In one embodiment, the included angle beta between the groove and the main shaft is not equal to 45-135 degrees.

In one embodiment, the groove circumferential angle α is 180 ° to 360 °.

In one embodiment, all grooves have a circumferential angle of < 360 ° and adjacent groove positions are staggered.

Drawings

FIG. 1 is a schematic diagram of a conventional valve drive shaft;

FIG. 2 is a schematic view of a valve drive shaft according to an embodiment of the present utility model;

FIG. 3 is a schematic view of the cross-sectional structure taken along line A-A in FIG. 2;

FIG. 4 is an enlarged schematic view of the portion B in FIG. 2;

the reference numerals are: 1. a valve-driving power arm; 2. a shaft sleeve positioning terminal; 3. a drive shaft cylindrical surface; 4. a rocker arm welding terminal; 5. a groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 2, the preferred embodiment of the present utility model is: a transmission shaft of a supercharger valve comprises a valve driving power arm 1, a shaft sleeve positioning terminal 2, a transmission shaft cylindrical surface 3 and a rocker arm welding terminal 4, wherein a plurality of annular grooves 6 are formed in the transmission shaft cylindrical surface 3 at intervals.

As shown in fig. 2 to 4, in this embodiment, the cross section of the grooves is rectangular, the number of grooves is 5, all the grooves are uniformly spaced along the axial direction, all the grooves are mutually independent and do not intersect, the widths and depths of all the grooves are the same, the circumferential angles α of all the grooves are less than 360 °, the adjacent grooves are staggered, and the included angles β between all the grooves and the main shaft are 90 °.

In this embodiment, by providing 5 annular grooves 6 in the cylindrical surface 3 of the drive shaft, the contact area can be reduced, so that the drive resistance can be reduced, and at the same time, since the 5 annular grooves are arranged at intervals, the leakage amount of the exhaust gas can not be increased.

While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The utility model provides a booster valve transmission shaft, includes valve drive power arm (1), axle sleeve locating terminal (2), transmission shaft cylindrical surface (3), rocking arm welded terminal (4), its characterized in that: a plurality of annular grooves (5) are arranged on the cylindrical surface (3) of the transmission shaft at intervals.

2. The supercharger valve drive shaft of claim 1, wherein: all grooves (5) are independent of each other and do not intersect with each other.

3. The supercharger valve drive shaft of claim 1, wherein: the width and depth of all trenches (5) are the same.

4. The supercharger valve drive shaft of claim 2, wherein: the cross section of the groove (5) is rectangular, trapezoidal or other irregular polygons.

5. The supercharger valve drive shaft of claim 2, wherein: the number of the grooves (5) is 3-8.

6. The supercharger valve drive shaft of claim 2, wherein: all grooves (5) are uniformly spaced in the axial direction.

7. The supercharger valve drive shaft of claim 2, wherein: the included angle beta between the groove (5) and the main shaft is 45-135 degrees.

8. The supercharger valve drive shaft of claim 2, wherein: the circumferential angle alpha of the groove (5) is 180-360 degrees.

9. The supercharger valve drive shaft of claim 8, wherein: all the circumferential angles of the grooves (5) are smaller than 360 degrees, and adjacent groove positions are staggered.