CN202302492U

CN202302492U - Gyrating joint with big gyration angle and good sealing effect

Info

Publication number: CN202302492U
Application number: CN201120413973XU
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 gyrating joint with a big gyration angle and a good sealing effect. The gyrating joint comprises a gyrating body (1) and a gyrating shaft (2). The gyrating joint is characterized in that the lower end of the gyrating shaft (2) is axially inserted into the gyrating body (1) from the upper end of the gyrating body (1); the gyrating shaft (2) is axially provided with one central oil draining hole, six main oil way holes and one low-pressure oil way hole; a rotary sealing ring (7), an O-shaped ring II (8) and a water seal (9) are mounted in an annular groove between the gyrating body (1) and the gyrating shaft (2); a V-shaped groove (9.2) is arranged at the top of the cross section of the water seal (9); and a contact surface of the water seal (9) and the gyrating shaft (2) is an oblique plane (9.1). Dust cannot easily enter the gyrating joint with the big gyration angle and the good sealing effect; the interference cannot occur between pipelines; and furthermore, the operation and the repair are quite convenient.

Description

The angle of revolution is big, the swivel coupling of good sealing effect

Technical field

The utility model relates to that a kind of angle of revolution is big, the swivel coupling of good sealing effect; Be mainly used in the hydraulic system of machineries such as large-tonnage excavator, hoist, grader, tower crane; Be to connect standing part and the hydraulic pipe line of rotating part and the link of circuit in whole hydraulic system and the circuit, belong to technical field of engineering machinery.

Background technique

Hydraulic shovel, loop wheel machine, loader etc., two-part 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 solid of rotation, turning axle and lid etc.During use, the revolution lower bolster of solid of rotation and hydraulic shovel, hoist machinery 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 and electric wire are installed on respectively on each hydraulic fluid port and circuit 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 swivel coupling in the past connects the hydraulic pipe 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, provides a kind of dust be difficult for to get into, can not interfere between the pipeline, and the Operation and maintenance swivel coupling of big, the good sealing effect in angle of revolution easily.

The purpose of the utility model is achieved in that

The utility model angle of revolution is big, the swivel coupling of good sealing effect; Comprise solid of rotation and turning axle; Insert in the solid of rotation from the top axial of solid of rotation the lower end of said turning axle; And the upper end of turning axle is exposed to solid of rotation; Said turning axle axially offers draining hole, a center, six working connection holes and a low pressure oil circuit hole, and the center of turning axle, 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 turning axle 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 turning axle top, radially have on the said solid of rotation six main hydraulic fluid ports and low pressure oil crossing with turning axle 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 solid of rotation is provided with end cap; Said end cap is through being bolted to the lower end of solid of rotation; Be provided with O type circle I between the lower end of said solid of rotation and the end cap, be provided with back-up ring and circlip for shaft between the lower end of said solid of rotation and the lower end of turning axle, rotating seal ring, O type circle II and water seal are housed in the annular groove between said solid of rotation and the turning axle; The top in this water seal cross section has " V " connected in star, and the surface of contact of said water seal and turning axle is the inclined-plane.

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

This angle of revolution is big, the swivel coupling of good sealing effect has increased water seal between the top of solid of rotation and turning axle; The surface of contact of this water seal and turning axle is the inclined-plane; When the downward setting-out of extraneous pressure sealed, it was tighter to make that water seal and turning axle paste, and has guaranteed sealing effect.And this swivel coupling can connect the hydraulic pipe 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 that the utility model angle of revolution is big, the Facad structure schematic representation of the swivel coupling of good sealing effect.

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

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

Fig. 4 is the worm's eye view of Fig. 1.

Fig. 5 is the sectional view of water seal among Fig. 2.

Wherein: solid of rotation 1, turning axle 2, end cap 3, O type circle I 4, back-up ring 5, circlip for shaft 6, rotating seal ring 7, O type circle II 8, water seal 9, inclined-plane 9.1, groove 9.2, screw plug 10.

Embodiment

Referring to Fig. 1 to Fig. 5, the utility model relates to that a kind of angle of revolution is big, the swivel coupling of good sealing effect, comprises solid of rotation 1 and turning axle 2; Insert in the solid of rotation 1 from the top axial of solid of rotation 1 lower end of said turning axle 2, and the upper end of turning axle 2 is exposed to solid of rotation 1, and the lower end of said solid of rotation 1 is provided with end cap 3; Said end cap 3 is through being bolted to the lower end of solid of rotation 1; Be provided with O type circle I 4 between the lower end of said solid of rotation 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 solid of rotation 1 and turning axle 2, rotating seal ring 7, O type circle II 8 and water seal 9 are housed in the annular groove between said solid of rotation 1 and the turning axle 2; It is special-shaped that the cross section of said water seal 9 is; The top in this cross section has " V " connected in star 9.2, and said water seal 9 is inclined-plane 9.1 with the surface of contact of turning axle 2, and the extraneous downward setting-out of pressure sealed 9 o'clock; It is tighter to make that water seal 9 and turning axle 2 paste, and has guaranteed sealing effect.

Like Fig. 2; Said turning axle 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 turning axle 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 turning axle 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 turning axle 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 turning axle 2; Radially have on the said solid of rotation 1 six main hydraulic fluid ports and low pressure oil crossing with turning axle 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. the swivel coupling of big, the good sealing effect in an angle of revolution; Comprise solid of rotation (1) and turning axle (2); It is characterized in that: insert in the solid of rotation (1) from the top axial of solid of rotation (1) lower end of said turning axle (2); And the upper end of turning axle (2) is exposed to solid of rotation (1); Said turning axle (2) axially offers draining hole, a center, six working connection holes and a low pressure oil circuit hole, and the center of turning axle (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 turning axle (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 turning axle (2) top, radially have on the said solid of rotation (1) six main hydraulic fluid ports and low pressure oil crossing with turning axle (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 solid of rotation (1) is provided with end cap (3); Said end cap (3) is through being bolted to the lower end of solid of rotation (1); Be provided with O type circle I (4) between the lower end of said solid of rotation (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 solid of rotation (1) and turning axle (2); Rotating seal ring (7), O type circle II (8) and water seal (9) are housed in the annular groove between said solid of rotation (1) and the turning axle (2), and the top in this water seal (9) cross section has " V " connected in star (9.2), and said water seal (9) is inclined-plane (9.1) with the surface of contact of turning axle (2).