阅读说明：本技术 齿轮偏心轴多缸活塞泵结构 (Multi-cylinder piston pump structure with gear eccentric shaft ) 是由 王守武 于 2019-11-11 设计创作，主要内容包括：本发明公开的齿轮偏心轴多缸活塞泵结构,主动齿轮和从动齿轮的多个齿轮依次啮合,齿数相同的齿轮设置有偏心轴,所有偏心轴的偏心距离相同且偏心轴和对应的偏心轴之间的相对角度相同,各偏心轴带动的连杆活塞运动方向相同。相对于一个偏心轴带动多个连杆活塞的径向活塞泵,本发明各偏心轴带动的连杆活塞运动方向相同,减小了体积,降低了材料成本；相对于曲轴带动多个连杆活塞的径向活塞泵,本发明只是简单的齿轮啮合,降低了加工的工艺要求,从而降低了生产成本。(The invention discloses a multi-cylinder piston pump structure with gear eccentric shafts, wherein a plurality of gears of a driving gear and a driven gear are sequentially meshed, gears with the same tooth number are provided with eccentric shafts, the eccentric distances of all the eccentric shafts are the same, the relative angles between the eccentric shafts and the corresponding eccentric shafts are the same, and the motion directions of connecting rod pistons driven by the eccentric shafts are the same. Compared with a radial piston pump in which one eccentric shaft drives a plurality of connecting rod pistons, the radial piston pump has the advantages that the connecting rod pistons driven by the eccentric shafts have the same motion direction, the size is reduced, and the material cost is reduced; compared with a radial piston pump with a plurality of connecting rod pistons driven by a crankshaft, the radial piston pump only adopts simple gear meshing, and reduces the processing technological requirements, thereby reducing the production cost.)

1. The multi-cylinder piston pump structure with the gear eccentric shafts is characterized in that a plurality of gears of a driving gear (1) and a driven gear (2) are sequentially meshed, gears with the same tooth number are provided with eccentric shafts (3), the eccentric distances of all the eccentric shafts are the same, the relative angles between the eccentric shafts and the corresponding eccentric shafts are the same, and the motion directions of pistons (5) driven by connecting rods (4) driven by the eccentric shafts are the same.

Technical Field

The invention relates to the field of radial piston pumps, in particular to a multi-cylinder piston pump structure with a gear eccentric shaft.

Background

In the related prior art, a radial piston pump structure that one eccentric shaft drives a plurality of connecting rod pistons is generally adopted, and the connecting rod pistons are distributed in the radial direction of a main shaft at equal angles, so that the structure is simple, but the volume is large, and the material cost is high; the crankshaft drives a plurality of radial piston pumps of connecting rod pistons, and the connecting rod pistons can be arranged in the same radial direction of the main shaft, have the same moving direction and small volume, but the crankshaft machining is complex, the required precision is high, and the machining cost is high.

Disclosure of Invention

The invention discloses a multi-cylinder piston pump structure with gear eccentric shafts, wherein a plurality of gears of a driving gear and a driven gear are sequentially meshed, gears with the same tooth number are provided with eccentric shafts, the eccentric distances of all the eccentric shafts are the same, the relative angles between the eccentric shafts and the corresponding eccentric shafts are the same, and the motion directions of connecting rod pistons driven by the eccentric shafts are the same.

According to the multi-cylinder piston pump structure with the gear eccentric shaft, the driving gear rotates to drive the driven gear to rotate, the gear drives the connecting rod connected with the eccentric shaft, the connecting rod drives the piston to do linear reciprocating motion in the piston cylinder, and the multi-cylinder piston pump structure is applied to equipment such as a piston hydraulic pump and a piston air pump, and is small in size, simple in structure, stable and reliable.

Meanwhile, compared with a radial piston pump in which one eccentric shaft drives a plurality of connecting rod pistons, the connecting rod pistons driven by the eccentric shafts have the same motion direction, so that the volume is reduced, and the material cost is reduced; compared with a radial piston pump with a plurality of connecting rod pistons driven by a crankshaft, the radial piston pump has the advantages that the processing process requirement is reduced, only simple gear meshing is adopted, and the processing cost is reduced.

Additional aspects and advantages of embodiments of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural view of a gear eccentric shaft multi-cylinder piston pump structure in a perspective (top view) according to an embodiment of the present invention;

fig. 2 is a schematic structural view (in a bottom view) of a gear eccentric shaft multi-cylinder piston pump structure according to an embodiment of the invention.

Detailed Description

The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

Referring to fig. 1 and 2, in the multi-cylinder piston pump structure with eccentric gear shafts according to the embodiment of the present invention, a plurality of gears of a driving gear 1 and a driven gear 2 are sequentially engaged, gears with the same number of teeth are provided with eccentric shafts 3, eccentric distances of all the eccentric shafts are the same, relative angles between the eccentric shafts and the corresponding eccentric shafts are the same, and moving directions of pistons 5 driven by connecting rods 4 driven by the eccentric shafts 3 are the same.

According to the multi-cylinder piston pump structure with the gear eccentric shaft, the driving gear 1 rotates to drive the driven gear 2 to rotate, the driven gear 2 drives the eccentric shaft 3 to be connected with the connecting rod 4, and the connecting rod 4 drives the piston 5 to do linear reciprocating motion in the piston cylinder 6.