CN201992242U - Rotating joint with great rotating angle - Google Patents

Abstract

The utility model relates to a rotating joint with a great rotating angle, which comprises a rotating body (1) and a rotating shaft (2). The rotating joint 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); the rotating shaft (2) is axially provided with a central oil drain hole, six main oil path holes and a low-pressure oil path hole; an upper-end opening of the center oil drain hole extends out of the upper end of the rotating shaft (2); upper-end openings of the six main oil path holes and the low-pressure oil path hole extend out of the side wall at the upper part of the rotating shaft; and the rotating body (1) is radially provided with six main oil ports and one low-pressure oil port which are in one-to-one correspondence and communication with the six main oil path holes and the one low-pressure oil path hole which are arranged on the rotating shaft (2). In the rotating joint with the great rotating angle, the interference among pipelines is avoided. In addition, the rotating joint with the great rotating angle is quite convenient to operate and maintain.

Description

The swivel coupling that the angle of revolution is big

Technical field

The utility model relates to the big swivel coupling in a kind of angle of revolution, being mainly used in the hydraulic system of machineries such as large-tonnage excavator, hoist, grader, tower crane, is to connect standing part and the hydraulic pipe line of rotating part and the link of circuit in whole hydraulic system and the circuit.

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.

After yet 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, the Operation and maintenance inconvenience, also interfere easily between the pipeline, cause the pipeline life-span shorter.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned deficiency, provides between a kind of pipeline can not interfere, and the Operation and maintenance big swivel coupling in angle of revolution easily.

The purpose of this utility model is achieved in that

The swivel coupling that the utility model angle of revolution is big, 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 described turning axle, and the upper end of turning axle is exposed to solid of rotation, described turning axle axially offers draining hole, a center, article six, working connection hole and a low pressure oil circuit hole, the center of turning axle is located in draining hole, described center, described six working connection pore size distributions are in the periphery in draining hole, center, the upper end open in draining hole, described center is from turning axle upper end pass-out, the upper end open in described six working connection holes and described low pressure oil circuit hole is from the sidewall pass-out on turning axle top, radially have on the described 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 described six working connection holes is blocked with screw plug.

The lower end of described solid of rotation is provided with end cap, described end cap is by being bolted to the lower end of solid of rotation, be provided with O type circle I between the lower end of described solid of rotation and the end cap, be provided with back-up ring and circlip for shaft between the lower end of described solid of rotation and the lower end of turning axle, rotating seal ring, O type circle II and dust ring are housed in the annular groove between described solid of rotation and the turning axle.

Compared with prior art, the beneficial effects of the utility model are:

The big swivel coupling in this angle of revolution 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 can rotate 360 ° relatively with rotating part, the Operation and maintenance inconvenience, 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 the action of more complexity, has improved its applicability.

Description of drawings

Fig. 1 is the Facad structure schematic representation of the big swivel coupling in the utility model angle of revolution.

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.

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, dust ring 9, screw plug 10.

Embodiment

Referring to Fig. 1 to Fig. 4, the utility model relates to the big swivel coupling in a kind of angle of revolution, comprise 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 described turning axle 2, and the upper end of turning axle 2 is exposed to solid of rotation 1, the lower end of described solid of rotation 1 is provided with end cap 3, described end cap 3 is by being bolted to the lower end of solid of rotation 1, be provided with O type circle I 4 between the lower end of described 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 described solid of rotation 1 and turning axle 2, in the annular groove between described solid of rotation 1 and the turning axle 2 rotating seal ring 7 be housed, O type circle II 8 and dust ring 9.

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

As 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 described 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, described six main hydraulic fluid ports are A mouth, B mouth, C mouth, D mouth, P mouth and Q mouth, and described low pressure oil crossing is the E mouth.

Claims (3)

1. swivel coupling that the angle of revolution is big, 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 described turning axle (2), and the upper end of turning axle (2) is exposed to solid of rotation (1), described turning axle (2) axially offers draining hole, a center, article six, working connection hole and a low pressure oil circuit hole, the center of turning axle (2) is located in draining hole, described center, described six working connection pore size distributions are in the periphery in draining hole, center, the upper end open in draining hole, described center is from turning axle (2) upper end pass-out, the upper end open in described six working connection holes and described low pressure oil circuit hole is from the sidewall pass-out on turning axle (2) top, radially have on the described 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.

2. the big swivel coupling in a kind of angle of revolution according to claim 1 is characterized in that: the lower end port in described six working connection holes is blocked with screw plug (10).

3. the big swivel coupling in a kind of angle of revolution according to claim 1 and 2, it is characterized in that: the lower end of described solid of rotation (1) is provided with end cap (3), described end cap (3) is by being bolted to the lower end of solid of rotation (1), be provided with O type circle I (4) between the lower end of described 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 described solid of rotation (1) and turning axle (2), in the annular groove between described solid of rotation (1) and the turning axle (2) rotating seal ring (7) be housed, O type circle II (8) and dust ring (9).

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