CN202284305U

CN202284305U - Hydraulic rotating joint with large rotating angle

Info

Publication number: CN202284305U
Application number: CN201120403367XU
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: Jiangyin Changling Machinery Manufacturing Co Ltd
Priority date: 2011-10-21
Filing date: 2011-10-21
Publication date: 2012-06-27
Anticipated expiration: 2021-10-21

Abstract

The utility model relates to a hydraulic rotating joint with a large rotating angle. The hydraulic rotating joint with the large rotating angle comprises a rotating body (1) and a rotating shaft (2), and is characterized in that: the lower end of the rotating shaft (2) is axially inserted into the rotating body (1) from the upper end of the rotating body (1); one central oil drain hole, six main oil path holes and one low-pressure oil path hole are axially formed in the rotating shaft (2); a rotary sealing ring (7), an O-shaped ring II (8) and a dustproof ring (9) are arranged in an annular groove between the rotating body (1) and the rotating shaft (2); the rotary sealing ring (7) consists of a dust scraping ring (7.1) and an O-shaped ring III (7.2); the O-shaped ring III (7.2) is fixed on the dust scraping ring (7.1); and the dust scraping ring (7.1) is pressed on the rotating shaft (2). By using the hydraulic rotating joint with the large rotating angle, pressure can be maintained for a long term, so that the rotating joint can be prevented from being damaged in the working process under the action of single-side oil pressure, and interference does not occur among pipelines; and the hydraulic rotating joint with the large rotating angle is very convenient to operate and maintain.

Description

The hydraulic gyration joint that the angle of revolution is big

Technical field

The utility model relates to the big hydraulic gyration joint in a kind of angle of revolution; Be mainly used in the hydraulic system of machineries such as large-tonnage excavator, crane, land leveller, tower crane; Be to connect standing part and the fluid pressure line of rotating part and the connector of circuit in whole hydraulic system and the circuit, belong to technical field of engineering machinery.

Background technology

Hydraulic crawler excavator, loop wheel machine, loader etc., two parts are need be rotating about it, this just exists the oil circuit of rotating part and standing part and the connectivity problem of circuit.Swivel coupling is made up of revolving body, gyroaxis and lid etc.During use, the revolution lower platform of revolving body and hydraulic crawler excavator, crane machinery is fixed, and the installing plate on the gyroaxis supports with the revolution on the revolution upper mounting plate and is connected.Hydralic hose and electric wire are installed on respectively on each hydraulic fluid port and circuit of revolving body and gyroaxis, and the upper mounting plate of hydraulic machinery then drives the gyroaxis rotation.

Yet swivel coupling in the past has only one-sided hydraulic fluid port to carry out work, can cause bigger pressure to swivel coupling is one-sided, and therefore common rotating seal ring can not effectively guarantee the swivel coupling pressure inside, thereby has influenced the quality of swivel coupling.

And after swivel coupling in the past connects the fluid pressure line and circuit of standing part and rotating part in hydraulic system and the circuit; Standing part and rotating part relative rotation angle are generally at 50 ° to 80 °; Its angle of revolution is less; Operation and maintenance are inconvenient, also interfere easily between the pipeline, cause the pipeline life-span shorter.

Summary of the invention

The purpose of the utility model is to overcome above-mentioned deficiency, and a kind of permanent pressurize is provided, and prevents that swivel coupling work the time receives one-sided oil pressure and damages, can not interfere between the pipeline, and the Operation and maintenance big hydraulic gyration joint in angle of revolution easily.

The purpose of the utility model is achieved in that

The hydraulic gyration joint that the utility model angle of revolution is big; Comprise revolving body and gyroaxis; Insert in the revolving body from the top axial of revolving body the lower end of said gyroaxis; And the upper end of gyroaxis is exposed to revolving body; Said gyroaxis axially offers draining hole, a center, six working connection holes and a low pressure oil circuit hole, and the center of gyroaxis, the periphery in said six working connection pore size distribution draining holes in the center are located in draining hole, said center; The open upper end in draining hole, said center is pass-out from the gyroaxis upper end; The open upper end in said six working connection holes and said low pressure oil circuit hole is from the sidewall pass-out on gyroaxis top, radially have on the said revolving body six main hydraulic fluid ports and low pressure oil crossing with gyroaxis on six working connection holes and corresponding one by one being connected of low pressure oil circuit hole, the lower end port in said six working connection holes is blocked with screw plug.

The lower end of said revolving body is provided with end cap; Said end cap is provided with O type circle I through being bolted to the lower end of revolving body between the lower end of said revolving body and the end cap, be provided with back-up ring and circlip for shaft between the lower end of said revolving body and the lower end of gyroaxis; Rotating seal ring, O type circle II and dust ring are housed in the annular groove between said revolving body and the gyroaxis; This rotating seal ring is made up of dust blowing ring and O type circle III, and O type circle III is fixed on the dust blowing ring, and the dust blowing ring is pressed on the gyroaxis.

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

The rotating seal ring of the hydraulic gyration joint that this angle of revolution is big is combined by dust blowing ring and elasticity O type circle; The O type circle of this combined type rotating seal ring is fixed on the dust blowing ring, and the dust blowing ring plays the dust blowing effect, and O type circle then provides pressure to the dust blowing ring; Guarantee that the dust blowing ring is pressed on the gyroaxis; Thereby can prevent effectively that swivel coupling work the time receives one-sided oil pressure big and damage, and can long-acting pressurize, thereby guarantee the quality of swivel coupling.And this swivel coupling can connect the fluid pressure line and the circuit of standing part and rotating part in whole hydraulic system and the circuit; And make standing part and rotating part can rotate 360 ° relatively; Operation and maintenance are inconvenient, just can not interfere between the pipeline, make that the pipeline life-span is longer.And this swivel coupling provides multichannel oil circuit and multiplex circuit, makes excavator, loader can carry out more complicated actions, has improved its applicability.

Description of drawings

Fig. 1 is the Facad structure sketch map of the big hydraulic gyration joint in the utility model angle of revolution.

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

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

Fig. 4 is the upward view of Fig. 1.

Fig. 5 is the structural representation of rotating seal ring among Fig. 2.

Wherein: revolving body 1, gyroaxis 2, end cap 3, O type circle I 4, back-up ring 5, circlip for shaft 6, rotating seal ring 7, dust blowing ring 7.1, O type circle III 7.2, O type circle II 8, dust ring 9, screw plug 10.

The specific embodiment

Referring to Fig. 1 to Fig. 5, the utility model relates to the big hydraulic gyration joint in a kind of angle of revolution, comprises revolving body 1 and gyroaxis 2; Insert in the revolving body 1 from the top axial of revolving body 1 lower end of said gyroaxis 2, and the upper end of gyroaxis 2 is exposed to revolving body 1, and the lower end of said revolving body 1 is provided with end cap 3; Said end cap 3 is through being bolted to the lower end of revolving body 1; Be provided with O type circle I 4 between the lower end of said revolving body 1 and the end cap 3, be provided with back-up ring 5 and circlip for shaft 6 between the lower end of the lower end of said revolving body 1 and gyroaxis 2, rotating seal ring 7, O type circle II 8 and dust ring 9 are housed in the annular groove between said revolving body 1 and the gyroaxis 2; This rotating seal ring 7 is made up of dust blowing ring 7.1 and O type circle III 7.2; O type circle III 7.2 is fixed on the dust blowing ring 7.1, and dust blowing ring 7.1 plays the dust blowing effect, and O type circle III 7.2 then provides pressure to dust blowing ring 7.1; Guarantee that dust blowing ring 7.1 is pressed on the gyroaxis 2; Thereby can prevent effectively that swivel coupling work the time receives one-sided oil pressure big and damage, and can long-acting pressurize, thereby guarantee the quality of swivel coupling.

Like Fig. 2; Said gyroaxis 2 axially offers draining hole, a center, six working connection holes and a low pressure oil circuit hole; Draining hole, said center is the F hole among Fig. 2 and Fig. 3, and said six working connection holes are A hole, B hole, C hole, D hole, P hole and the Q hole among Fig. 1, Fig. 2 and Fig. 3, and said low pressure oil circuit hole is the E hole among Fig. 1, Fig. 2 and Fig. 3; Said center draining hole F is located at the center of gyroaxis 2; The periphery of said six working connection pore size distributions draining hole F in the center, said low pressure oil circuit hole E is located between P hole and the Q hole, and the open upper end of said center draining hole F is from gyroaxis 2 upper end pass-outs; The open upper end of said six working connection holes and said low pressure oil circuit hole E is from the sidewall pass-out on gyroaxis 2 tops, and the lower end port in said six working connection holes is blocked with screw plug 10.

Like Fig. 1 and Fig. 2; Corresponding to six working connection holes and the low pressure oil circuit hole E on the gyroaxis 2; Radially have on the said revolving body 1 six main hydraulic fluid ports and low pressure oil crossing with gyroaxis 2 on six working connection holes and corresponding one by one being connected of low pressure oil circuit hole E; Said six main hydraulic fluid ports are A mouth, B mouth, C mouth, D mouth, P mouth and Q mouth, and said low pressure oil crossing is the E mouth.

Claims

1. hydraulic gyration joint that the angle of revolution is big; Comprise revolving body (1) and gyroaxis (2); It is characterized in that: insert in the revolving body (1) from the top axial of revolving body (1) lower end of said gyroaxis (2); And the upper end of gyroaxis (2) is exposed to revolving body (1); Said gyroaxis (2) axially offers draining hole, a center, six working connection holes and a low pressure oil circuit hole, and the center of gyroaxis (2), the periphery in said six working connection pore size distribution draining holes in the center are located in draining hole, said center; The open upper end in draining hole, said center is pass-out from gyroaxis (2) upper end; The open upper end in said six working connection holes and said low pressure oil circuit hole is from the sidewall pass-out on gyroaxis (2) top, radially have on the said revolving body (1) six main hydraulic fluid ports and low pressure oil crossing with gyroaxis (2) on six working connection holes and corresponding one by one being connected of low pressure oil circuit hole, the lower end port in said six working connection holes is blocked with screw plug (10);

The lower end of said revolving body (1) is provided with end cap (3); Said end cap (3) is through being bolted to the lower end of revolving body (1); Be provided with O type circle I (4) between the lower end of said revolving body (1) and the end cap (3); Be provided with back-up ring (5) and circlip for shaft (6) between the lower end of the lower end of said revolving body (1) and gyroaxis (2); Rotating seal ring (7), O type circle II (8) and dust ring (9) are housed in the annular groove between said revolving body (1) and the gyroaxis (2); This rotating seal ring (7) is made up of dust blowing ring (7.1) and O type circle III (7.2), and O type circle III (7.2) is fixed on the dust blowing ring (7.1), and dust blowing ring (7.1) is pressed on the gyroaxis (2).