CN103062560A

CN103062560A - Hydraulic slewing connector with large slewing angle

Info

Publication number: CN103062560A
Application number: CN 201110322048
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: 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), the rotary seal ring (7) is composed 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 compressed on the slewing shaft (2). The hydraulic slewing connector with the large slewing angle can keep pressure for a long time and prevent the slewing connector from being damaged by single side oil pressure during work, interference cannot happen among pipelines, and operation and maintenance are very convenient.

Description

The hydraumatic swivel joint that the angle of revolution is large

Technical field

The present invention relates to the large hydraumatic swivel joint in a kind of angle of revolution, be mainly used in the hydraulic system of the 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 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 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 only has one-sided hydraulic fluid port to carry out work, can cause larger pressure to swivel coupling is one-sided, and therefore common rotating seal ring can not effectively guarantee the pressure of swivel coupling inside, thereby has affected the quality of swivel coupling.

And in swivel coupling connecting fluid pressing system in the past and the circuit behind the hydraulic pipe 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 easily interfere between the pipeline, cause the pipeline life-span shorter.

Summary of the invention

The object of the invention is to overcome above-mentioned deficiency, a kind of permanent pressurize is provided, prevent that swivel coupling when work be subjected to one-sided oil pressure and damage, can not interfere between the pipeline, and the Operation and maintenance large hydraumatic swivel joint in angle of revolution easily.

The object of the present invention is achieved like this:

The hydraumatic swivel joint that angle of revolution of the present invention is large, 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 way 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 way 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 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 solid of rotation is provided with end cap, described end cap is bolted on 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, this rotating seal ring is comprised 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 turning axle.

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

The rotating seal ring of the hydraumatic swivel joint that this angle of revolution is large is combined by dust blowing ring and elasticity O type circle, the O type circle of this Assembled rotary seal ring is fixed on the dust blowing ring, the dust blowing ring plays the dust blowing effect, O type circle then provides pressure to the dust blowing ring, guarantee that the dust blowing ring is pressed on the turning axle, thereby can prevent effectively that swivel coupling when work be subjected to one-sided oil pressure large and damage, and can long-acting pressurize, thereby guarantee the quality of swivel coupling.And this swivel coupling can connect hydraulic pipe 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 hydraumatic swivel joint in angle of revolution of the present invention.

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 structural representation of rotating seal ring 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, dust blowing ring 7.1, O type circle III 7.2, O type circle II 8, dust ring 9, screw plug 10.

Embodiment

Referring to Fig. 1 to Fig. 5, the present invention relates to the large hydraumatic swivel joint 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 bolted on 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 is housed, O type circle II 8 and dust ring 9, this rotating seal ring 7 is comprised 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, dust blowing ring 7.1 plays the dust blowing effect, 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 turning axle 2, thereby damaged greatly by one-sided oil pressure in the time of can effectively preventing swivel coupling work, and can long-acting pressurize, thereby have guaranteed the quality of swivel coupling.

Such as Fig. 2, described turning axle 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 turning axle 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 turning axle 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 turning axle 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 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 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. hydraumatic swivel joint that the angle of revolution is large, 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 way 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 way 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 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 solid of rotation (1) is provided with end cap (3), described end cap (3) is bolted on 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) is housed, O type circle II (8) and dust ring (9), this rotating seal ring (7) is comprised 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) is pressed on the turning axle (2).