CN103061375A

CN103061375A - Hydraulic slewing connector with large slewing angle

Info

Publication number: CN103061375A
Application number: CN 201110318390
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: 2011-10-19
Filing date: 2011-10-19
Publication date: 2013-04-24

Abstract

The invention relates to a hydraulic slewing connector with a large slewing angle. The hydraulic slewing joint comprises a slewing body (1) and a slewing shaft (2). The hydraulic slewing connector is characterized in that the lower end of the slewing shaft (2) is axially inserted inside the slewing body (1) from the upper end of the slewing body (1), a central oil discharge hole, six main oil way holes and a low-pressure oil way hole are formed in the slewing shaft (2) axially, a rotary seal ring (7), an O-shaped ring II (8) and a dust-proof ring (9) are arranged inside an annular groove between the slewing body (1) and the slewing shaft (2), two lip mouths (9.1) up and down are formed on one side, contacting with the slewing shaft (2), of the dust-proof ring (9) to form double lip mouths, and both the two lip mouths (9.1) up and down are tightly attached to the outer wall of the slewing shaft (2). The hydraulic slewing connector with the large slewing angle has the advantages that dust cannot enter easily, oil cannot leak out easily, interference cannot happen among pipelines, and operation and maintenance are very convenient.

Description

The swivel coupling that the angle of revolution is large

Technical field

The present invention relates to the large swivel coupling in a kind of angle of revolution, be mainly used in the hydraulic system of the 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 to 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 comprised 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 is relatively poor with extraneous sealing performance, extraneous dust creeps in the swivel coupling easily, affected the performance of swivel coupling, and the oil in the swivel coupling also spills easily, revolving body in the swivel coupling and gyroaxis relatively rotated also produced impact, need to often oil, increase workman's labour intensity.

And in swivel coupling connecting fluid pressing system in the past and the circuit behind the fluid pressure line and circuit of standing part and rotating part, 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 object of the invention is to overcome above-mentioned deficiency, provide a kind of dust to be difficult for entering, oil is difficult for spilling, can not interfere between the pipeline, and the Operation and maintenance large swivel coupling in angle of revolution easily.

The object of the present invention is achieved like this:

The swivel coupling that angle of revolution of the present invention is large, comprise revolving body and gyroaxis, insert in the revolving body from the top axial of revolving body the lower end of described gyroaxis, and the upper end of gyroaxis is exposed to revolving body, described gyroaxis axially offers draining hole, a center, article six, working connection hole and a low pressure oil way hole, the center of gyroaxis 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 gyroaxis upper end pass-out, the upper end open in described six working connection holes and described low pressure oil way hole is from the sidewall pass-out on gyroaxis top, radially have on the described revolving body six main hydraulic fluid ports and low pressure oil crossing with gyroaxis on six working connection holes and low pressure oil way hole corresponding being connected one by one, the lower end port in described six working connection holes is blocked with screw plug.

The lower end of described revolving body is provided with end cap, described end cap is bolted on the lower end of revolving body, be provided with O type circle I between the lower end of described revolving body and the end cap, be provided with back-up ring and circlip for shaft between the lower end of described 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 described revolving body and the gyroaxis, the side that this dust ring contacts with gyroaxis is provided with up and down two lips, form double-lip, should be up and down two lips all be adjacent to the outer wall of gyroaxis.

Compared with prior art, the invention has the beneficial effects as follows:

The large swivel coupling in this angle of revolution is made the double-lip form with dust ring, the one side that this dust ring contacts with gyroaxis is provided with up and down two lips, top and the gyroaxis of two lips fit tightly up and down, so that extraneous dust is difficult for creeping in the swivel coupling, and oil can not spill internally, thereby guaranteed the performance of swivel coupling, need not often to oil, reduced workman's labour intensity.And this swivel coupling can connect fluid pressure line and the circuit of standing part and rotating part in whole hydraulic system and the circuit, and make standing part and the rotating part can relative rotating 360 degrees, Operation and maintenance are inconvenient, just can not interfere between the pipeline, so that the pipeline life-span is longer.And this swivel coupling provides multichannel oil circuit and multiplex circuit, so that excavator, loader can be carried out the action of more complexity, has improved its applicability.

Description of drawings

Fig. 1 is the Facad structure schematic diagram of the large swivel coupling in angle of revolution of the present invention.

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

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

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

Fig. 5 is the structural representation of dust 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, O type circle II 8, dust ring 9, lip 9.1, screw plug 10.

The specific embodiment

Referring to Fig. 1 to Fig. 5, the present invention relates to the large swivel coupling in a kind of angle of revolution, comprise revolving body 1 and gyroaxis 2, insert in the revolving body 1 from the top axial of revolving body 1 lower end of described gyroaxis 2, and the upper end of gyroaxis 2 is exposed to revolving body 1, the lower end of described revolving body 1 is provided with end cap 3, described end cap 3 is bolted on the lower end of revolving body 1, be provided with O type circle I 4 between the lower end of described 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 described revolving body 1 and gyroaxis 2, in the annular groove between described revolving body 1 and the gyroaxis 2 rotating seal ring 7 is housed, O type circle II 8 and dust ring 9, the side that this dust ring 9 contacts with gyroaxis 2 is provided with up and down two lips 9.1, form double-lip, should be up and down two lips 9.1 all be adjacent to the outer wall of gyroaxis 2.So that extraneous dust is difficult for creeping in the swivel coupling, and oil can not spill internally, thereby guaranteed the performance of swivel coupling, need not often to oil, and reduced workman's labour intensity.

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

Such as Fig. 1 and Fig. 2, corresponding to six working connection holes and the low pressure oil way hole E on the gyroaxis 2, radially have on the described revolving body 1 six main hydraulic fluid ports and low pressure oil crossing with gyroaxis 2 on six working connection holes and low pressure oil way hole E corresponding being connected one by one, 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

1. swivel coupling that the angle of revolution is large, 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 described gyroaxis (2), and the upper end of gyroaxis (2) is exposed to revolving body (1), described gyroaxis (2) axially offers draining hole, a center, article six, working connection hole and a low pressure oil way hole, the center of gyroaxis (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 gyroaxis (2) upper end pass-out, the upper end open in described six working connection holes and described low pressure oil way hole is from the sidewall pass-out on gyroaxis (2) top, radially have on the described revolving body (1) six main hydraulic fluid ports and low pressure oil crossing with gyroaxis (2) on six working connection holes and low pressure oil way hole corresponding being connected one by one, the lower end port in described six working connection holes is blocked with screw plug (10);

The lower end of described revolving body (1) is provided with end cap (3), described end cap (3) is bolted on the lower end of revolving body (1), be provided with O type circle I (4) between the lower end of described 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 described revolving body (1) and gyroaxis (2), in the annular groove between described revolving body (1) and the gyroaxis (2) rotating seal ring (7) is housed, O type circle II (8) and dust ring (9), the side that this dust ring (9) contacts with gyroaxis (2) is provided with up and down two lips (9.1), form double-lip, two lips (9.1) all are adjacent to the outer wall of gyroaxis (2) up and down.