CN102021924A - Hydraulic central swivel joint with electric brush - Google Patents

Abstract

The present invention relates to a hydraulic central swivel joint with an electric brush, which is mainly used in a whole hydraulic system of machinery like a large tonnage crane. The hydraulic central swivel joint with the electric brush comprises a revolving body (4) and a revolving shaft (5); a small end of the revolving shaft (5) axially inserts into the revolving body (4) from a back end of the revolving shaft (4); a front end of the revolving body (4) is fixed by a cap (2); a big end of the revolving shaft (5) extends out of the back end of the revolving body (4); and the big end of the revolving shaft (5) is fixedly connected to a flange disc (10); the small end of the revolving shaft (5) is fixedly provided with the electric brush (14); eight main oil paths and a centre line hole are axially disposed in the revolving shaft (5); corresponding to the eight main oil paths and the centre line hole on the revolving shaft (5), the revolving body (4) and the cap (2) are respectively and radially provided with eight main oil holes and a centre line hole, which are corresponding to the eight main oil holes and the centre line hole on the revolving shaft (5) one by one. In the present invention, the revolving part and the fixing part can relatively rotate 360 degrees without interference of pipelines; the upper and lower oil paths are smooth, and the actions of each oil path are not serially connected.

Description

The central swivel coupling of charged brush hydraulic pressure

(1) technical field

The present invention relates to the central swivel coupling of a kind of charged brush hydraulic pressure.Be mainly used in the whole 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.

(2) background technology

Hydraulic crawler excavator, loop wheel machine etc., two parts are need be rotating about it, this just exists the oil circuit and the circuit connectivity problem of rotating part and standing part.The central swivel coupling of charged brush hydraulic pressure is exactly to be used for connecting fluid pressure line and the circuit of fixing in whole hydraulic system and the circuit with rotating part.Central authorities' 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 gyroaxis upper mounting plate 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.The upper mounting plate of hydraulic machinery drives the gyroaxis rotation.

Before the present invention makes, can not relative gyration between the revolving body of present charged brush hydraulic pressure central authorities swivel coupling and the gyroaxis 360 °, cause pipeline and circuit to interfere, upper and lower not smooth, each oil circuit and circuit operation are connected.

(3) summary of the invention

The objective of the invention is to overcome above-mentioned deficiency, provide a kind of rotating part and standing part of making relative to rotate the central swivel coupling of charged brush hydraulic pressure that 360 ° of pipelines do not interfere, upper and lower oil circuit is unimpeded, each oil circuit action is not connected.

The object of the present invention is achieved like this: the central swivel coupling of a kind of charged brush hydraulic pressure, comprise revolving body and gyroaxis, the little head end of described gyroaxis axially inserts in the revolving body from the revolving body rear end, and the gyroaxis microcephaly holds axle head to fix with baffle plate, the revolving body front end is fixing with block, described gyroaxis stub end stretches out outside the revolving body rear end, and the gyroaxis stub end is fixedly connected with flange; Be fixed with electricity at the little head end of gyroaxis and rinse, this electricity is rinsed and is placed in the described block, and the shell that electricity is rinsed is fixedlyed connected with block; Axially offer eight working connection holes and circuit hole, a center in the described gyroaxis, circuit hole, described center is arranged in the gyroaxis center, article eight, the working connection hole is arranged in the periphery in circuit hole, center, and the oil-in in described eight working connection holes all is arranged on the outer rim of gyroaxis stub end; Corresponding to eight working connection holes on the gyroaxis and circuit hole, a center, radially have respectively on described revolving body and the block eight main hydraulic fluid ports and multiplex circuit with gyroaxis on eight working connection holes and circuit hole, a center corresponding one by one.Article eight, and described swivel coupling fuel-displaced with gyroaxis can be connected multiplex circuit to working connection through revolving body.

The invention has the beneficial effects as follows:

The present invention can connect the fluid pressure line and the circuit of standing part and rotating part in whole hydraulic system and the circuit, make rotating part can rotate 360 ° relatively with standing part, pipeline and circuit do not interfere, upper and lower oil circuit and circuit clear, and each oil circuit and circuit operation are not connected.And this central swivel coupling can provide the oil circuit and the multiplex circuit of eight passages, not only can provide oil circuit for running motor and soil-shifting oil cylinder, can also provide circuit on this basis, makes the excavator can be in complex operating environment construction more.

This product is mainly used in upper and lower two major parts of the all-hydraulic loop wheel machine of 200T level.

(4) description of drawings

Fig. 1 is the Facad structure schematic diagram of the charged brush hydraulic pressure of the present invention central authorities swivel coupling.

Fig. 2 is the rear elevation of Fig. 1.

Fig. 3 is the A-A cut-away view of Fig. 2.

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

Reference numeral among the figure:

Brush alignment pin 1, block 2, baffle plate 3, revolving body 4, gyroaxis 5, rotatory sealing 6, wear ring 7, O shape circle 8, dust ring 9, flange 10, plug 11, O shape circle 12, bolt 13, brush 14, screw 15, bolt 16, screw 17, cover plate 18.

(5) specific embodiment

Referring to Fig. 1～4, the central swivel coupling of the charged brush hydraulic pressure that the present invention relates to, comprise revolving body 4 and gyroaxis 5, described gyroaxis 5 little head ends axially insert in the revolving body 4 from revolving body 4 rear ends, and gyroaxis 5 microcephalies hold axle head fixing with baffle plate 3, revolving body 4 front ends are fixing with block 2 and bolt 13, and described gyroaxis 5 stub ends stretch out outside revolving body 4 rear ends, and gyroaxis 5 stub ends are fixedly connected with flange 10; At gyroaxis 5 little head ends brush 14 is housed, and with the axle and the gyroaxis 5 of brush alignment pin 1 and screw 15 fixed brushes 14, makes the brush 14 can be with gyroaxis 5 rotations.Brush 14 places in the described block 2, and the shell of brush 14 is fixedlyed connected with bolt 16 with block 2 usefulness cover plates 18, screw 17, and it can be rotated with block 2.Load onto rotatory sealing 6, wear ring 7, O shape circle 8 and dust ring 9 in the described revolving body 4 outer rim annular grooves.

As Fig. 3, axially offer eight working connection holes and circuit hole, a center in the described gyroaxis 5, as the A hole among Fig. 1, Fig. 2 and Fig. 3, B hole, C hole, D hole, E hole, F hole, G hole and H hole and I hole, described center circuit hole I is arranged in gyroaxis 5 centers, article eight, the working connection hole is arranged in the periphery in circuit hole, center, the oil-in in described eight working connection holes all is arranged on the outer rim of gyroaxis 5 stub ends, the working connection nose end head that gyroaxis 5 stub ends are offered is blocked with plug 11, and guarantees sealing with O shape circle 12; Corresponding to eight working connection holes on the gyroaxis 5 and circuit hole, a center, described revolving body 4 and block radially have respectively on 2 eight main hydraulic fluid ports and 12 road circuit (also can be 10 tunnel, 14 tunnel etc. multichannel) with gyroaxis 5 on eight working connection holes and circuit hole, a center corresponding one by one, as the A ' mouth among Fig. 1, Fig. 2 and Fig. 3, B ' mouth, C ' mouth, D ' mouth, E ' mouth, F ' mouth, G ' mouth, H ' mouth and I ' mouth.

Claims (1)

1. charged brush hydraulic pressure central authorities swivel coupling, comprise revolving body (4) and gyroaxis (5), it is characterized in that: the little head end of described gyroaxis (5) axially inserts in the revolving body (4) from revolving body (4) rear end, and gyroaxis (5) microcephaly holds axle head fixing with baffle plate (3), revolving body (4) front end is fixing with block (2), described gyroaxis (5) stub end stretches out outside revolving body (4) rear end, and gyroaxis (5) stub end is fixedly connected with flange (10); Be fixed with brush (14) at the little head end of gyroaxis (5), this brush (14) places in the described block (2), and the shell of brush (14) is fixedlyed connected with block (2); Axially offer eight working connection holes and circuit hole, a center in the described gyroaxis (5), circuit hole, described center is arranged in gyroaxis (5) center, article eight, the working connection hole is arranged in the periphery in circuit hole, center, and the oil-in in described eight working connection holes all is arranged on the outer rim of gyroaxis (5) stub end; Corresponding to eight working connection holes on the gyroaxis (5) and circuit hole, a center, described revolving body (4) and block radially have respectively on (2) eight main hydraulic fluid ports and multiplex circuit with gyroaxis (5) on eight working connection holes and circuit hole, a center corresponding one by one.

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