CN213744801U

CN213744801U - Oil pump gear with stable output pressure and good interchangeability

Info

Publication number: CN213744801U
Application number: CN202022622597.7U
Authority: CN
Inventors: 刘海峰; 陆勇; 路昊; 杨飞
Original assignee: Chongqing Panlian Transmission Technology Co ltd
Current assignee: Chongqing Panlian Transmission Technology Co ltd
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2021-07-20
Anticipated expiration: 2030-11-13

Abstract

The utility model discloses an oil pump gear with stable output pressure and good interchangeability, which comprises a gear inner ring, wherein a gear outer ring is arranged on the outer side of the gear inner ring, one side of the gear outer ring is fixedly connected with one end of teeth, one side of the teeth is provided with tooth grooves, a reinforcing ring is arranged inside the gear inner ring, a shaft sleeve is arranged inside the reinforcing ring, one side of the reinforcing ring is provided with a reinforcing rib, the inner wall of the gear outer ring is provided with threads, the surface of the gear outer ring is provided with a fixed plate, one end of the fixed plate is spliced with a movable shaft, the other end of the fixed plate is provided with a connecting screw, and the lower end of the connecting screw is provided with a connecting; according to the oil pump gear with stable output pressure and good interchangeability, the inner ring and the outer ring of the gear can be disassembled by arranging the threads and the fixing plate, so that the phenomenon that the whole gear needs to be replaced when the gear goes wrong is avoided.

Description

Oil pump gear with stable output pressure and good interchangeability

Technical Field

The utility model relates to a gear technical field specifically is a stable and oil pump gear that interchangeability is good of output pressure.

Background

Gear refers to a mechanical element on a rim with gears continuously engaged to transmit motion and power. The steels commonly used for manufacturing gears include quenched and tempered steels, quenched steels, carburized and quenched steels, and nitrided steels. Cast steel is slightly lower in strength than forged steel and is commonly used for gears with larger sizes; the gray cast iron has poor mechanical property and can be used in open gear transmission of light load; the nodular cast iron can partially replace steel to manufacture gears; plastic gears are often used in light loads and where low noise is required, and the mating gears are generally steel gears with good thermal conductivity. Gears can be classified by tooth profile, gear profile, tooth trace shape, surface on which the teeth are located, and manufacturing method, etc. The tooth profile of the gear includes profile curve, pressure angle, tooth height and profile variation. Involute gears are relatively easy to manufacture, so that in the gears used in modern times, involute gears are the absolute majority, while cycloid gears and circular arc gears are less used. In the aspect of pressure angle, the bearing capacity of the small pressure angle gear is smaller; however, the large pressure angle gear is used only in special cases because the load of the bearing increases when the transmission torque is the same, although the load capacity is high. The tooth height of the gear is standardized and generally adopts the standard tooth height. The advantages of the modified gears are more, and the modified gears are distributed in various mechanical equipment. In addition, the gear can also be divided into a cylindrical gear, a bevel gear, a non-circular gear, a rack and a worm and worm wheel according to the shape of the gear; according to the shape of the tooth trace, the gear is divided into a straight gear, a helical gear, a herringbone gear and a curve gear; the gear is divided into an external gear and an internal gear according to the surface where the gear teeth are located; they can be classified into cast gears, cut gears, rolled gears, sintered gears, etc. according to the manufacturing method. The material of manufacture and the heat treatment process of the gear have a great influence on the load-bearing capacity and the dimensional weight of the gear. Before the 50 s of the 20 th century, gears were made of carbon steel, alloy steel was used in the 60 s, and case-hardened steel was used in the 70 s. The tooth surface can be divided into a soft tooth surface and a hard tooth surface according to hardness. The soft tooth surface gear has low bearing capacity, but is easy to manufacture, has good running-in performance, and is mainly used in general machines with transmission size and weight without strict limitation and small-scale production. Because the load of the small gear is heavy in the paired gears, the hardness of the tooth surface of the small gear is generally higher than that of the large gear in order to make the service lives of the large gear and the small gear approximately equal. The bearing capacity of the gear with the hard tooth surface is high, and the gear is subjected to quenching, surface quenching or carburizing and quenching treatment after being subjected to fine cutting so as to improve the hardness. However, since the gear inevitably deforms during the heat treatment, grinding, lapping or finish cutting is required after the heat treatment to eliminate errors caused by the deformation and improve the accuracy of the gear.

The prior art has the following defects or problems:

1. most of oil pump gears used in the current market are made of integral structures, and when the gears have problems in the use process of the oil pump, the gears need to be integrally replaced, so that the use cost of the gears is greatly increased;

2. the shaft sleeve of the oil pump gear is easy to damage after long-time use because of no corresponding protection device.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a steady and the good oil pump gear of interchangeability of output pressure to the weak point of prior art to the problem that provides among the solution background art.

In order to achieve the above object, the utility model provides a following technical scheme: the oil pump gear comprises a gear inner ring, a gear outer ring is arranged on the outer side of the gear inner ring, one side of the gear outer ring is fixedly connected with one end of each tooth, a tooth groove is formed in one side of each tooth, a reinforcing ring is arranged inside the gear inner ring, a shaft sleeve is arranged inside the reinforcing ring, a reinforcing rib is arranged on one side of the reinforcing ring, threads are arranged on the inner wall of the gear outer ring, a fixing plate is arranged on the surface of the gear outer ring, a movable shaft is inserted into one end of the fixing plate, a connecting screw is arranged at the other end of the fixing plate, and a connecting hole is formed in the lower end of the connecting screw.

As the utility model discloses a preferred technical scheme, the gear outer lane passes through screw thread and gear inner circle threaded connection, the internal diameter size of gear outer lane and the external diameter size looks adaptation of gear inner circle.

As the utility model discloses a preferred technical scheme, one side of reinforcing ring and one side fixed connection of axle sleeve, the opposite side of reinforcing ring and the inside fixed connection of gear inner circle.

As the utility model discloses an optimized technical scheme, the reinforcing ring is made for the graphite alkene material.

As the utility model discloses a preferred technical scheme, the outside swing joint on loose axle and gear inner circle surface is passed through to the one end of fixed plate.

As the utility model discloses a preferred technical scheme, the other end of fixed plate passes through one side threaded connection on connecting screw and connecting hole and gear outer lane surface, the external diameter of connecting screw size and the internal diameter size looks adaptation of connecting hole.

As the utility model discloses a preferred technical scheme, the shape of reinforcing ring is the same with the shape of axle sleeve, the internal diameter size of reinforcing ring and the external diameter size looks adaptation of axle sleeve.

Compared with the prior art, the utility model provides a stable and oil pump gear that interchangeability is good of output pressure possesses following beneficial effect:

1. according to the oil pump gear with stable output pressure and good interchangeability, the inner ring and the outer ring of the gear can be disassembled by arranging the threads and the fixing plate, so that the phenomenon that the whole gear needs to be replaced when the gear has a problem is avoided, and compared with the existing oil pump gear, the oil pump gear is convenient to install, stable in output pressure of an oil pump and good in interchangeability;

2. this oil pump gear that output pressure is stable and interchangeability is good has strengthened the protection of axle sleeve through setting up the reinforcing ring, has effectually promoted the intensity of axle sleeve for axle sleeve life has also increased the life of this gear inner circle more permanent.

Drawings

Fig. 1 is a schematic top plan view of the structure of the present invention;

FIG. 2 is a schematic plan view of the shaft sleeve of the present invention;

FIG. 3 is a perspective view of the thread of the present invention;

fig. 4 is a perspective view of the fixing plate of the structure of the present invention.

In the figure: 1. an inner ring of the gear; 2. an outer ring of the gear; 3. teeth; 4. a tooth socket; 5. a reinforcing ring; 6. reinforcing ribs; 7. a shaft sleeve; 8. a thread; 9. a fixing plate; 10. a movable shaft; 11. connecting holes; 12. and connecting screws.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, in this embodiment: the oil pump gear comprises a gear inner ring 1, a gear outer ring 2 is arranged on the outer side of the gear inner ring 1, one side of the gear outer ring 2 is fixedly connected with one end of a tooth 3, a tooth groove 4 is formed in one side of the tooth 3, a reinforcing ring 5 is arranged inside the gear inner ring 1, a shaft sleeve 7 is arranged inside the reinforcing ring 5, a reinforcing rib 6 is arranged on one side of the reinforcing ring 5, threads 8 are formed in the inner wall of the gear outer ring 2, a fixing plate 9 is arranged on the surface of the gear outer ring 2, a movable shaft 10 is inserted into one end of the fixing plate 9, a connecting screw 12 is arranged at the other end of the fixing plate 9, and a connecting hole 11 is formed in the lower end of the connecting screw 12.

In the embodiment, the gear outer ring 2 is in threaded connection with the gear inner ring 1 through the threads 8, and the inner diameter size of the gear outer ring 2 is matched with the outer diameter size of the gear inner ring 1, so that the connection between the gear outer ring 2 and the gear inner ring 1 is firmer; one side of the reinforcing ring 5 is fixedly connected with one side of the shaft sleeve 7, and the other side of the reinforcing ring 5 is fixedly connected with the inside of the gear inner ring 1, so that the strength of the shaft sleeve 7 is enhanced, and the service life of the gear inner ring 1 is prolonged to a certain extent; the reinforcing ring 5 is made of graphene materials, so that the structure is more reasonable; one end of the fixed plate 9 is movably connected with the outer side of the surface of the gear inner ring 1 through a movable shaft 10, so that the fixed plate 9 is convenient to use; the other end of the fixing plate 9 is in threaded connection with one side of the surface of the gear outer ring 2 through a connecting screw 12 and a connecting hole 11, and the outer diameter size of the connecting screw 12 is matched with the inner diameter size of the connecting hole 11, so that the gear inner ring 1 is conveniently connected with the gear outer ring 2; the shape of reinforcing ring 5 is the same with the shape of axle sleeve 7, and the internal diameter size of reinforcing ring 5 and the external diameter size looks adaptation of axle sleeve 7, protection axle sleeve 7 that can be better.

The utility model discloses a theory of operation and use flow: when the user uses, through axle sleeve 7, fix this gear on the transmission shaft of oil pump, through screw thread 8, make and dismantle between gear inner circle 1 and the gear outer lane 2, through fixed plate 9, can carry out further fixed to gear inner circle 1 and gear outer lane 2 after connecting, prevent the not hard up of gear inner circle 1 and gear outer lane 2 in the use, through reinforcing ring 5, strengthened the protection to axle sleeve 7, make the life of this gear more permanent to a certain extent.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The oil pump gear with stable output pressure and good interchangeability is characterized in that: including gear inner circle (1), the outside of gear inner circle (1) is provided with gear outer circle (2), one side of gear outer circle (2) and the one end fixed connection of tooth (3), one side of tooth (3) is provided with tooth's socket (4), the inside of gear inner circle (1) is provided with reinforcing ring (5), the inside of reinforcing ring (5) is provided with axle sleeve (7), one side of reinforcing ring (5) is provided with strengthening rib (6), the inner wall of gear outer circle (2) is provided with screw thread (8), the surface of gear outer circle (2) is provided with fixed plate (9), the one end of fixed plate (9) is pegged graft and is had loose axle (10), the other end of fixed plate (9) is provided with connecting screw (12), the lower extreme of connecting screw (12) is provided with connecting hole (11).

2. The oil pump gear with stable output pressure and good interchangeability according to claim 1, characterized in that: the gear outer ring (2) is in threaded connection with the gear inner ring (1) through threads (8), and the inner diameter size of the gear outer ring (2) is matched with the outer diameter size of the gear inner ring (1).

3. The oil pump gear with stable output pressure and good interchangeability according to claim 1, characterized in that: one side of the reinforcing ring (5) is fixedly connected with one side of the shaft sleeve (7), and the other side of the reinforcing ring (5) is fixedly connected with the inside of the gear inner ring (1).

4. The oil pump gear with stable output pressure and good interchangeability according to claim 1, characterized in that: the reinforcing ring (5) is made of graphene.

5. The oil pump gear with stable output pressure and good interchangeability according to claim 1, characterized in that: one end of the fixed plate (9) is movably connected with the outer side of the surface of the gear inner ring (1) through a movable shaft (10).

6. The oil pump gear with stable output pressure and good interchangeability according to claim 1, characterized in that: the other end of the fixing plate (9) is in threaded connection with one side of the surface of the gear outer ring (2) through a connecting screw (12) and a connecting hole (11), and the outer diameter of the connecting screw (12) is matched with the inner diameter of the connecting hole (11).

7. The oil pump gear with stable output pressure and good interchangeability according to claim 1, characterized in that: the shape of the reinforcing ring (5) is the same as that of the shaft sleeve (7), and the inner diameter of the reinforcing ring (5) is matched with the outer diameter of the shaft sleeve (7).