CN202302494U

CN202302494U - Hydraulic rotating connector

Info

Publication number: CN202302494U
Application number: CN2011204139759U
Authority: CN
Inventors: 夏泽民; 张爱军; 陈酉冰; 潘逸明; 高海波; 朱江华
Original assignee: Jiangyin Changling Machinery Manufacturing Co Ltd
Current assignee: Jiangsu Changling hydraulic Limited by Share Ltd
Priority date: 2011-10-27
Filing date: 2011-10-27
Publication date: 2012-07-04
Anticipated expiration: 2021-10-27

Abstract

The utility model relates to a hydraulic rotating connector which is mainly used in hydraulic systems of machines, such as cranes and land levelers. The hydraulic rotating connector comprises a rotating body (1) and a rotating shaft (2) and is characterized in that a central oil drain hole, four main oil line holes and three low pressure oil holes are arranged at the axial direction of the rotating shaft (2); the central oil drain hole is arranged in the center of the rotating shaft (2); a water seal (3) is arranged between the upper end of the rotating body (1) and an upper pipeline connecting section (2.1); the section of the water seal (3) is abnormal-shaped, the top of the section is provided with a V-shaped groove (3.2); and a contact surface of the water seal (3) and the rotating shaft (2) is provided with an inclined plane. According to the hydraulic rotating connector, dust is not easy to enter, the fixing part and the rotating part in the hydraulic systems can be ensured to rotate at 360 degrees, the oil lines are unblocked and the operations of the oil lines are not mutually interfered.

Description

The hydraulic gyration joint

Technical field

The utility model relates to a kind of hydraulic gyration joint, is mainly used in the hydraulic system of machinery such as hoist, grader, is the link that connects standing part and rotating part hydraulic pipe line in the whole hydraulic system, belongs to technical field of engineering machinery.

Background technique

Hoist, grader etc., two-part are need be rotating about it, this just exists the connectivity problem of rotating part and standing part oil circuit.The hydraulic gyration joint is made up of solid of rotation, turning axle and lid etc.During use, the revolution lower bolster of solid of rotation and hoist, grader is fixed, and the mounting plate on the turning axle supports with the revolution on the revolution upper mounting plate and is connected.Hydralic hose is installed on respectively on each hydraulic fluid port of solid of rotation and turning axle, and the upper mounting plate of hydraulic machinery then drives the turning axle rotation.

Yet swivel coupling in the past is relatively poor with extraneous sealability, and extraneous dust creeps in the swivel coupling easily, and the performance of swivel coupling has been produced influence, has influenced its quality.

And after hydraulic gyration joint in the past connects the hydraulic pipe line of standing part and rotating part in the hydraulic system; Can not let standing part and rotating part rotate 360 ° relatively; Cause pipeline to interfere, and oil circuit is upper and lower not smooth, each oil circuit action series connection.

Summary of the invention

The purpose of the utility model is to overcome above-mentioned deficiency, provides a kind of dust to be difficult for getting into, and can rotate 360 ° relatively between standing part and the rotating part in the hydraulic system, and oil circuit is upper and lower unimpeded, the hydraulic gyration joint that each oil circuit action is not connected.

The purpose of the utility model is achieved in that

The utility model hydraulic gyration joint; Comprise solid of rotation and turning axle; Said turning axle is made up of upper pipeline linkage section and following construction section, and the following construction section of said turning axle inserts in the solid of rotation from the top axial of solid of rotation, and said upper pipeline linkage section is exposed to solid of rotation; Said turning axle axially offers draining hole, a center, four working connection holes and three low pressure oilholes; The center of turning axle is located in draining hole, said center, radially have on the said solid of rotation four main hydraulic fluid ports, three low pressure hydraulic fluid ports with turning axle on four working connection holes, three corresponding one by one being connected of low pressure oilhole, have on the said end cap center drain tap with turning axle on draining hole, center be connected; It is stifled that the lower end in said four working connection holes is provided with awl, and the upper end of said three low pressure oilholes is provided with plug.

Be provided with water seal between said solid of rotation upper end and the upper pipeline linkage section; The top in this water seal cross section has " V " connected in star; The surface of contact of said water seal and turning axle is the inclined-plane; There is end cap the lower end of said solid of rotation through bolt, is provided with O type circle between the lower end of said solid of rotation and the end cap, and rotating seal ring and dust ring are housed in the annular groove between said solid of rotation and the turning axle.

Compared with prior art, the beneficial effect of the utility model is:

This hydraulic gyration joint can connect the hydraulic pipe line of standing part and rotating part in the whole hydraulic system; And make standing part and rotating part can rotate 360 ° relatively; Pipeline just can not interfere, and it is unimpeded that upper and lower oil circuit can keep, and each oil circuit action is not connected.And this hydraulic gyration joint provides multichannel oil circuit, makes hoist, grader can carry out more complicated actions, has improved its applicability, and is also comparatively convenient during Operation and maintenance, makes that the pipeline life-span is longer.And between the top of solid of rotation and turning axle, increased water seal, the surface of contact of this water seal and turning axle is the inclined-plane, during the downward setting-out envelope of extraneous pressure, can make to have guaranteed sealing effect by the tighter of water seal and turning axle subsides.

Description of drawings

Fig. 1 is the Facad structure schematic representation of the utility model hydraulic gyration joint.

Fig. 2 is the I-I sectional view of Fig. 1.

Fig. 3 is the plan view of Fig. 1.

Fig. 4 is the sectional view of water seal among Fig. 2.

Wherein: solid of rotation 1, turning axle 2, upper pipeline linkage section 2.1, stifled 8, the plug 9 of construction section 2.2, water seal 3, inclined-plane 3.1, groove 3.2, end cap 4, O type circle 5, rotating seal ring 6, dust ring 7, awl down.

Embodiment

Referring to Fig. 1 to Fig. 4, the utility model relates to a kind of hydraulic gyration joint, comprises solid of rotation 1 and turning axle 2; Said turning axle 2 is made up of upper pipeline linkage section 2.1 and following construction section 2.2, and the following construction section 2.2 of said turning axle 2 inserts in the solid of rotation 1 from the top axial of solid of rotation 1, and said upper pipeline linkage section 2.1 is exposed to solid of rotation 1; Be provided with water seal 3 between said solid of rotation 1 upper end and the upper pipeline linkage section 2.1, it is special-shaped that the cross section of said water seal 3 is, and the top in this cross section has " V " connected in star 3.2; Said water seal 3 is inclined-plane 3.1 with the surface of contact of turning axle 2; The extraneous downward setting-out of pressure sealed 3 o'clock, and it is tighter to make that water seal 3 and turning axle 2 paste, and has guaranteed sealing effect; The said lower end of construction section 2.2 down and the lower end horizontal alignment of solid of rotation 1; There is end cap 4 lower end of said solid of rotation 1 through bolt, is provided with O type circle 5 between the lower end of said solid of rotation 1 and the end cap 4, and rotating seal ring 6 and dust ring 7 are housed in the annular groove between said solid of rotation 1 and the turning axle 2.

Like Fig. 2; Said turning axle 2 axially offers draining hole, a center, four working connection holes and three low pressure oilholes; Draining hole, said center is the H hole among Fig. 2 and Fig. 3, and said four working connection holes are A hole, B hole, C hole and the D hole among Fig. 1, Fig. 2 and Fig. 3, and said three low pressure oilholes are E hole, F hole and the G hole among Fig. 1, Fig. 2 and Fig. 3; Said center draining hole H is located at the center of turning axle 2; The termination, upper end of said three low pressure oilholes is blocked with plug 9, and it is stifled 8 that the lower end in said four working connection holes is provided with awl, and said awl stifled 8 is blocked the lower end in four working connection holes.

Like Fig. 1 and Fig. 2; Corresponding to the draining hole, a center on the turning axle 2, four working connection holes and three low pressure oilholes; Radially have on the said solid of rotation 1 four main hydraulic fluid ports, three low pressure hydraulic fluid ports with turning axle 2 on four working connection holes, three corresponding one by one being connected of low pressure oilhole; Have on the said end cap 4 the center drain tap with turning axle 2 on draining hole, center H be connected; Said four main hydraulic fluid ports are A mouth, B mouth, C mouth, D mouth, and said three low pressure hydraulic fluid ports are E mouth, F mouth and G mouth, and said center drain tap is the H mouth.

Claims

1. hydraulic gyration joint; Comprise solid of rotation (1) and turning axle (2); It is characterized in that: said turning axle (2) is made up of upper pipeline linkage section (2.1) and following construction section (2.2); The following construction section (2.2) of said turning axle (2) inserts in the solid of rotation (1) from the top axial of solid of rotation (1); Said upper pipeline linkage section (2.1) is exposed to solid of rotation (1), and said turning axle (2) axially offers draining hole, a center, four working connection holes and three low pressure oilholes, and the center of turning axle (2) is located in draining hole, said center; Radially have on the said solid of rotation (1) four main hydraulic fluid ports, three low pressure hydraulic fluid ports with turning axle (2) on four working connection holes, three corresponding one by one being connected of low pressure oilhole; Have on the said end cap (4) the center drain tap with turning axle (2) on draining hole, center be connected, the lower end in said four working connection holes is provided with awl stifled (8), the upper end of said three low pressure oilholes is provided with plug (9);

Be provided with water seal (3) between said solid of rotation (1) upper end and the upper pipeline linkage section (2.1); The top in this water seal (3) cross section has " V " connected in star (3.2); Said water seal (3) is inclined-plane (3.1) with the surface of contact of turning axle (2); There is end cap (4) lower end of said solid of rotation (1) through bolt; Be provided with O type circle (5) between the lower end of said solid of rotation (1) and the end cap (4), rotating seal ring (6) and dust ring (7) are housed in the annular groove between said solid of rotation (1) and the turning axle (2).