阅读说明：本技术 一种大功率齿轮油泵 (High-power gear oil pump ) 是由 李慧娟 王磊 于 2020-06-02 设计创作，主要内容包括：本发明公开了一种大功率齿轮油泵,包括泵体,泵体内装有相互啮合的主动齿轮和从动齿轮,主动齿轮安装在驱动轴上,驱动轴一端伸出泵体和驱动机构连接,从动齿轮安装在从动轴上,主动齿轮和从动齿轮两侧的泵体上设置有轴承槽,驱动轴和从动轴通过轴承安装在轴承槽内,轴承和主动齿轮、从动齿轮之间安装有密封组件,本发明结构稳定,布局合理,运动稳定,能够利用轴转动时的转向力实现自密封功能,有效的提升了密封性能,使得油泵功率提升,耐压耐用,满足了现在的使用要求。(The invention discloses a high-power gear oil pump, which comprises a pump body, wherein a driving gear and a driven gear which are mutually meshed are arranged in the pump body, the driving gear is arranged on a driving shaft, one end of the driving shaft extends out of the pump body and is connected with a driving mechanism, the driven gear is arranged on a driven shaft, bearing grooves are formed in the pump body on two sides of the driving gear and the driven gear, the driving shaft and the driven shaft are arranged in the bearing grooves through bearings, and a sealing assembly is arranged among the bearings, the driving gear and the driven gear.)

1. A high-power gear oil pump is characterized in that: including the pump body (100), be equipped with intermeshing's driving gear (200) and driven gear (300) in the pump body (100), install on drive shaft (210) driving gear (200), drive shaft (210) one end is stretched out the pump body (100) and is connected with actuating mechanism, driven gear (300) are installed on driven shaft (310), be provided with bearing groove (500) on pump body (100) of driving gear (200) and driven gear (300) both sides, install in bearing groove (500) through bearing (400) drive shaft (210) and driven shaft (310), bearing (400) and driving gear (200), install seal assembly (600) between driven gear (300).

2. The high power gear oil pump of claim 1, wherein: the sealing assembly (600) comprises an annular sealing element (610), the sealing element (610) is sleeved on the driving shaft (210) and the driven shaft (310), the sealing element (610) is arranged in the bearing groove (500), the sealing element (610) is connected and abutted to the triggering mechanism (620), when the driving shaft (210) and the driven shaft (310) rotate, the abutting and abutting triggering mechanism (620) is triggered, force along the direction vertical to the driving shaft (210) or the driven shaft (310) is applied to the sealing element (610) by the abutting and triggering mechanism (620), and the sealing element (610) is driven to abut against the bearing groove (500) and the driving shaft (210) or the driven shaft (310).

3. The high power gear oil pump of claim 2, wherein: an annular cavity (613) is formed in the sealing element (610) along the circumferential direction of the sealing element, the abutting triggering mechanism (620) is arranged in the annular cavity (613), and when the driving shaft (210) and the driven shaft (310) rotate, the abutting triggering mechanism (620) exerts elastic force pointing to the axial direction of the cavity wall close to the driving shaft (210) or the driven shaft (310) and exerts elastic force pointing to the outer side of the driving shaft (210) or the driven shaft (310) on the cavity wall far away from the driving shaft (210) or the driven shaft (310).

4. The high power gear oil pump of claim 3, wherein: the cross section of the cavity (613) in the plane of the axis of the driving shaft (210) or the driven shaft (310) is rectangular.

5. The high power gear oil pump of claim 4, wherein: the abutting triggering mechanism (620) comprises an inner flexible ring sleeve (622) and an outer flexible ring sleeve (623) which are sleeved together, the cavity wall of the cavity (613) close to the driving shaft (210) or the driven shaft (310) is marked as an A annular cavity wall, the cavity wall of the cavity (613) far away from the driving shaft (210) or the driven shaft (310) is marked as a B annular cavity wall, the inner annular surface of the inner flexible ring sleeve (622) abuts against the A annular cavity wall, the outer annular surface of the outer flexible ring sleeve (623) abuts against the B annular cavity wall, abutting pieces (621) are arranged in the interval area between the inner flexible ring sleeve (622) and the outer flexible ring sleeve (623), when the driving shaft (210) or the driven shaft (310) rotates, two ends of the abutting pieces (621) abut against the inner flexible ring sleeve (622) and the outer flexible ring sleeve (623) respectively, and elastic forces in opposite directions are applied to the A annular.

6. The high power gear oil pump of claim 5, wherein: the abutments (620) are distributed in a circumferential array about the centerline of the inner flexible cuff (622).

7. The high power gear oil pump of claim 6, wherein: the abutting piece (620) is a rod-shaped piece, the length direction of the abutting piece (620) and the axial direction of the driving shaft (210) or the driven shaft (310) are in vertical distribution in a different surface mode, one end of the abutting piece (620) is hinged in the inner flexible ring sleeve (622) through a hinge shaft, the other end of the abutting piece (620) is connected in a socket on the inner ring surface of the outer flexible ring sleeve (623) in an inserting mode, and the axial direction of the hinge shaft is consistent with the axial direction of the driving shaft (210) or the driven shaft (310).

8. The high power gear oil pump of claim 7, wherein: the sealing element (610) comprises an A sealing ring portion (611) and a B sealing ring portion (612) which are connected together in a clamping mode, annular grooves are formed in opposite side faces of the A sealing ring portion (611) and the B sealing ring portion (612), notches of the two annular grooves are arranged oppositely, and the two annular grooves surround a synthetic cavity (613).

9. The high power gear oil pump of claim 8, wherein: and an oil seal ring (630) is filled between two sides of the abutting triggering mechanism (620) and the side wall of the cavity (613).

10. The high power gear oil pump of claim 9, wherein: the driving shaft (210) extends out of the shaft end of the pump body and is sealed with the pump body (100) through a sealing packing ring (700).

Technical Field

The invention relates to the field of hydraulic pumps, in particular to a high-power gear oil pump.

Background

Gear pumps are rotary pumps that deliver or pressurize fluid by virtue of the change in working volume and movement created between a pump cylinder and a meshing gear. Two gears, pump body and front and back covers form two closed spaces, when the gears rotate, the space on the gear disengagement side becomes larger from smaller to larger to form vacuum to suck liquid, and the space on the gear engagement side becomes smaller from larger to smaller to squeeze liquid into the pipeline. The suction chamber and the discharge chamber are separated by a meshing line of two gears. The pressure at the discharge of the gear pump is entirely dependent on the amount of resistance at the pump outlet. The important means for improving the gear pump is to improve the sealing type of the gear pump, and the gear pump with good sealing type is high pressure resistant and high in power.

Disclosure of Invention

In order to solve the technical problem, the invention provides a high-power gear oil pump which comprises a pump body, wherein a driving gear and a driven gear which are meshed with each other are arranged in the pump body, the driving gear is arranged on a driving shaft, one end of the driving shaft extends out of the pump body to be connected with a driving mechanism, the driven gear is arranged on a driven shaft, bearing grooves are formed in the pump body on two sides of the driving gear and the driven gear, the driving shaft and the driven shaft are arranged in the bearing grooves through bearings, and sealing assemblies are arranged among the bearings, the driving.

Preferably: the sealing assembly comprises an annular sealing element, the sealing element is sleeved on the driving shaft and the driven shaft, the sealing element is arranged in the bearing groove, the sealing element is connected and abutted against the triggering mechanism, when the driving shaft and the driven shaft rotate, the triggering is abutted against the triggering mechanism, the force along the direction of the vertical driving shaft or the driven shaft is applied to the sealing element by the abutting against the triggering mechanism, and the sealing element is driven to abut against the bearing groove and the driving shaft or the driven shaft.

Preferably: the annular cavity has been seted up along its hoop in the sealing member, leans on trigger mechanism to arrange in the annular cavity, and when drive shaft and driven shaft rotated, leans on trigger mechanism to apply directional its axial elasticity to the chamber wall that is close to drive shaft or driven shaft, exerts directional drive shaft or driven shaft outside elasticity to the chamber wall of keeping away from drive shaft or driven shaft simultaneously.

Preferably: the cross section of the cavity in the plane of the axis of the driving shaft or the driven shaft is rectangular.

Preferably: lean on trigger mechanism including cup jointing interior flexible ring cover and outer flexible ring cover together, be close to the chamber wall of drive shaft or driven shaft with the cavity and mark as A annular chamber wall, the chamber wall of keeping away from drive shaft or driven shaft with the cavity marks as B annular chamber wall, interior flexible ring cover internal ring supports and leans on A annular chamber wall, the outer anchor ring of outer flexible ring cover supports and leans on B annular chamber wall, interval region between interior flexible ring cover and the outer flexible ring cover has arranged and has supported and lean on the piece, when drive shaft or driven shaft rotate, support and lean on a both ends and support respectively and lean on interior flexible ring cover and outer flexible ring cover, the realization is exerted opposite direction's elasticity to A annular chamber wall and B annular chamber wall.

Preferably: the abutting elements are distributed in a circumferential array around the central line of the inner flexible ring sleeve.

Preferably: the leaning piece is a rod-shaped piece, the rod length direction of the leaning piece and the axial direction of the driving shaft or the driven shaft are in vertical distribution in a different plane, one end of the leaning piece is hinged in the inner flexible ring sleeve through the hinge shaft, the other end of the leaning piece is connected in the socket on the inner ring surface of the outer flexible ring sleeve in an inserting mode, and the axial direction of the hinge shaft is consistent with the axial direction of the driving shaft or the driven shaft.

Preferably: the sealing member includes A sealing washer portion and B sealing washer portion that the joint is in the same place, and annular groove has been seted up to A sealing washer portion and B sealing washer portion opposite flank, and two annular groove notch mutual dispositions, and synthetic cavity is enclosed to two annular grooves.

Preferably: and an oil seal ring is filled between the two sides of the abutting triggering mechanism and the side wall of the cavity.

Preferably: the driving shaft extends out of the shaft end of the pump body and is sealed with the pump body through a sealing packing ring.

The invention has the technical effects and advantages that: the self-sealing device has the advantages of stable structure, reasonable layout and stable movement, can realize the self-sealing function by utilizing the steering force generated when the shaft rotates, effectively improves the sealing performance, improves the power of the oil pump, resists pressure and is durable, and meets the current use requirements.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural view of the sealing assembly of the present invention.

Fig. 3 is a schematic structural view of the abutting triggering mechanism of the invention.

Fig. 4 is a schematic cross-sectional structure of the seal of the present invention.

Description of reference numerals: 100-pump body, 200-driving gear, 210-driving shaft, 300-driven gear, 310-driven gear, 400-bearing, 500-bearing groove, 600-sealing component, 610-sealing element, 611-A sealing ring part, 612-B sealing ring part, 620-abutting triggering mechanism, 621-abutting element, 622-inner flexible ring sleeve, 623-outer flexible ring sleeve, 630-oil sealing ring and 700-sealing packing.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.