CN104728255B - Static pressure ball hinge adopting bidirectional inner feedback throttling technology - Google Patents

Abstract

The invention relates to a static pressure ball hinge adopting two-way internal feedback throttling technology, comprising a connecting rod (1), an upper ball seat (2), a ball head (3), and a lower ball seat (4); (1) is fixedly connected with ball head (3). The upper ball head seat (2) is connected with the lower ball head seat (4) to form a ball socket, the ball head (3) is located in the ball socket, and the middle oil outlet ring (6) and the middle oil outlet hole are arranged in the middle of the ball socket (7), the middle oil outlet ring (6) is connected with the middle oil outlet hole (7); the upper ball head seat (2) is provided with an upper static pressure chamber (8), a connecting hole (9), and an upper oil inlet hole ( 10), the upper oil inlet ring (23), the upper throttle ring (11), the upper oil outlet ring (21), the upper oil outlet hole (22) and the upper throttle passage (12).

Description

A static pressure ball joint adopting two-way internal feedback throttling technology

technical field

The invention relates to a static pressure ball joint hinge mechanism adopting bidirectional internal feedback throttling technology, which belongs to the field of mechanical design.

Background technique

The ball hinge is a mechanism that encloses a rod with a ball end in a ball socket. The ball head and the ball socket are in surface contact. The larger the contact area between the two, the smaller the contact specific pressure. The longer the working life of the hinge mechanism. However, with the development trend of large-scale, heavy-duty, and high-speed manufacturing equipment, this kind of ball-joint hinge mechanism will generate greater sliding friction between the ball head and the ball socket under heavy load and high-frequency swings. The friction loss between the ball head and the ball socket is increased, and even the two bite each other, which greatly shortens the working life. In order to reduce the friction between the ball head and the ball socket, there is a rolling ball joint hinge mechanism with rollers added between the ball socket and the ball head, but the bearing capacity of the rolling ball joint hinge mechanism is too small, and the impact resistance is low To meet the needs of heavy-duty working conditions; in order to improve the bearing capacity and prolong the working life, a type of static pressure ball joint has appeared in recent years. This kind of ball joint adopts fixed throttling methods, such as small hole throttling, capillary joint flow etc. When the size of the ball joint structure is fixed, the bearing capacity that this type of static pressure ball joint can provide is limited. When it is necessary to further increase the bearing capacity, the structural size of the ball joint must be increased, which greatly limits the application occasions of the ball joint.

Contents of the invention

Technical problem: The technical problem to be solved by the present invention is to provide a static pressure ball joint mechanism using two-way internal feedback throttling technology, which can provide The greater bearing capacity makes the wear between the ball joint and the ball socket small under heavy load and high frequency swing conditions, thereby reducing the calorific value of the ball joint hinge mechanism and prolonging the service life of the ball joint hinge mechanism.

Summary of the invention: In order to solve the above technical problems, the present invention provides a static pressure ball joint adopting two-way internal feedback throttling technology, including a connecting rod, an upper ball seat, a ball head, and a lower ball head seat; the rod and the ball head The phase is fixedly connected, and the ball head is placed between the upper ball head seat and the lower ball head seat;

The upper ball head seat is connected with the lower ball head seat to form a ball socket, the ball head is located in the ball socket, the middle oil outlet ring and the middle oil outlet hole are arranged in the middle of the ball socket, and the middle oil outlet ring is connected to the middle oil outlet hole Pass;

The upper ball head seat is provided with an upper static pressure chamber, a connecting hole, an upper oil inlet hole, an upper oil inlet ring, an upper throttle ring, an upper oil outlet ring, an upper oil outlet hole and a first upper throttle passage; the upper oil inlet hole and the upper inlet The oil ring is connected, the upper oil outlet hole is connected with the upper oil outlet ring, and the upper throttle ring is connected with the first upper throttle passage; and the upper oil inlet ring is close to the connecting hole, the upper oil outlet ring is close to the upper static pressure chamber, and the upper throttle ring is connected to the first upper throttle passage. The throttling ring is arranged between the upper oil inlet ring and the upper oil outlet ring;

The lower ball head seat is provided with a lower static pressure chamber, a lower oil inlet hole, a lower oil inlet ring, a lower oil outlet ring, a lower oil outlet hole, a lower throttle hole and a second lower throttle passage; the lower oil inlet hole and the lower The oil inlet ring is connected, the lower oil outlet hole is connected with the lower oil outlet ring, the lower throttle hole is connected with the lower throttle passage, and the upper static pressure chamber is connected with the second lower throttle passage, and the lower static pressure chamber is connected with the second lower throttle passage. The upper throttle passage is connected; the lower throttle hole is arranged at the bottom of the ball socket, the lower oil inlet ring is close to the lower throttle hole, and the lower oil outlet ring is close to the lower static pressure chamber.

Beneficial effect:

The invention provides a static pressure ball joint adopting two-way internal feedback throttling technology, which has the advantages of large bearing capacity, low heat generation, long working life, etc., and is suitable for various high-frequency swings, heavy loads and other working occasions. At the same time, the ball hinge does not need to be equipped with a restrictor, which is easy to manufacture and effectively reduces production costs.

Description of drawings

Figure 1a is a schematic diagram of the overall structure of a ball joint;

Figure 1b is a schematic diagram of the structure of the ball joint oil circuit;

Figure 2a is a schematic diagram of the three-dimensional structure of the upper ball seat;

Fig. 2b is a schematic diagram of the three-dimensional structure of the lower ball head seat.

In the above figure, there are: connecting rod 1, upper ball head seat 2, ball head 3, lower ball head seat 4, lower static pressure chamber 5, middle oil outlet ring 6, middle oil outlet hole 7, upper static pressure chamber 8, Connecting hole 9, upper oil inlet hole 10, upper throttle ring 11, first upper throttle passage 12, first lower throttle passage 13, lower oil outlet ring 14, lower oil outlet hole 15, lower oil inlet ring 16, lower Oil inlet hole 17 , lower throttle hole 18 , second lower throttle passage 19 , second upper throttle passage 20 , upper oil outlet ring 21 , upper oil outlet hole 22 , upper oil inlet ring 23 .

detailed description

Below in conjunction with accompanying drawing and embodiment mode, the patent of the present invention is described in further detail:

The present invention provides a static pressure ball hinge using two-way internal feedback throttling technology, as shown in Figures 1a, 1b, 2a and 2b, including a connecting rod 1, an upper ball seat 2, a ball head 3, and a lower ball head The seat 4; the rod 1 is fixedly connected with the ball head 3, and the ball head 3 is placed between the upper ball head seat 2 and the lower ball head seat 4.

Rod 1 is fixedly connected with ball head 3 . The upper ball head seat 2 is connected with the lower ball head seat 4 to form a ball socket, the ball head 3 is located in the ball socket, and the middle oil outlet ring 6 and the middle oil outlet hole 7 are arranged in the middle of the ball socket, and the middle oil outlet ring 6 It communicates with the oil outlet hole 7 in the middle.

The upper ball head seat 2 is provided with an upper static pressure chamber 8, a connecting hole 9, an upper oil inlet hole 10, an upper oil inlet ring 23, an upper throttle ring 11, a second upper oil outlet ring 21, an upper oil outlet hole 22 and an upper section The flow path 12; the upper oil inlet hole 10 communicates with the upper oil inlet ring 23, the upper oil outlet hole 22 communicates with the upper oil outlet ring 21, the upper throttle ring 11 communicates with the first upper throttle passage 12; and the upper oil inlet ring 23 is close to the connection hole 9, the upper oil outlet ring 21 is close to the upper static pressure chamber 8, and the upper throttle ring 11 is arranged between the upper oil inlet ring 23 and the upper oil outlet ring 21.

The lower ball head seat 4 is provided with a lower static pressure chamber 5, a lower oil inlet hole 17, a lower oil inlet ring 16, a lower oil outlet ring 14, a lower oil outlet hole 15, a lower throttle hole 18 and a second lower throttle passage 19; The lower oil inlet hole 17 communicates with the lower oil inlet ring 16, the lower oil outlet hole 16 communicates with the lower oil outlet ring 14, the lower throttle hole 18 communicates with the second lower throttle passage 19, and the upper static pressure The chamber 8 communicates with the second lower throttle passage 19, and the lower static pressure chamber 5 communicates with the first upper throttle passage 12; the lower throttle hole 18 is set at the bottom of the ball socket, and the lower oil inlet ring 16 is close to the lower section The orifice 18 and the lower oil outlet ring 14 are close to the lower static pressure chamber 5 .

During work, high-pressure lubricating oil is fed into the upper oil inlet hole 10 and the lower oil inlet hole 17. Part of the lubricating oil that enters through the lower oil inlet hole 17 flows into the lower oil outlet ring 14, and flows out through the lower oil outlet hole 15, and part of it flows into the lower throttle hole 18, flows through the second lower throttle passage 19, and enters the upper static pressure chamber 8, the lubricating oil entering the upper static pressure chamber 9 flows to the upper oil outlet ring 21 and the middle oil outlet ring 6 respectively, and finally flows out from the upper oil outlet hole 22 and the middle oil outlet hole 7; A part of the oil flows out through the connection hole 9, and a part flows into the upper throttle ring 11, and enters the lower static pressure chamber 5 through the first upper throttle passage 12, and the lubricating oil entering the lower static pressure chamber 5 flows respectively to the lower oil outlet ring 14 and the middle oil outlet ring 6, and finally flow out from the lower oil outlet hole 15 and the middle oil outlet hole 7.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (1)

1. A static pressure ball joint adopting two-way internal feedback throttling technology, including connecting rod (1), upper ball head seat (2), ball head (3), lower ball head seat (4); rod (1 ) is fixedly connected with the ball head (3), and the ball head (3) is placed between the upper ball head seat (2) and the lower ball head seat (4); it is characterized in that: The upper ball head seat (2) is connected with the lower ball head seat (4) to form a ball socket, the ball head (3) is located in the ball socket, and the middle oil outlet ring (6) and the middle oil outlet ring (6) are arranged in the middle of the ball socket The hole (7), the middle oil outlet ring (6) and the middle oil outlet hole (7) are connected; The upper ball head seat (2) is provided with an upper static pressure chamber (8), a connecting hole (9), an upper oil inlet hole (10), an upper oil inlet ring (23), an upper throttle ring (11), an upper oil outlet ring (21), the upper oil outlet hole (22) and the first upper throttle passage (12); the upper oil inlet hole (10) is connected with the upper oil inlet ring (23), and the upper oil outlet hole (22) and the upper oil outlet ring (21) are connected, the upper throttle ring (11) is connected with the first upper throttle passage (12); and the upper oil inlet ring (23) is close to the connecting hole (9), and the upper oil outlet ring (21) is close to the upper static The pressure chamber (8), the upper throttle ring (11) is arranged between the upper oil inlet ring (23) and the upper oil outlet ring (21); The lower ball seat (4) is provided with a lower static pressure chamber (5), a lower oil inlet hole (17), a lower oil inlet ring (16), a lower oil outlet ring (14), a lower oil outlet hole (15), The lower throttle hole (18) and the second lower throttle passage (19); the lower oil inlet hole (17) communicates with the lower oil inlet ring (16), and the lower oil outlet hole (15) communicates with the lower oil outlet ring (14) ) are connected, the lower orifice (18) is connected with the second lower throttle passage (19), and the upper static pressure chamber (8) is connected with the second lower throttle passage (19), and the lower static pressure chamber ( 5) It communicates with the upper throttle passage (12); the lower throttle hole (18) is set at the bottom of the ball socket, the lower oil inlet ring (16) is close to the lower throttle hole (18), and the lower oil outlet ring (14 ) close to the lower static pressure chamber (5).