CN1609352A

CN1609352A - Digging Machine

Info

Publication number: CN1609352A
Application number: CN 200410072722
Authority: CN
Inventors: 杨月龙; 秦瑞海; 袁志泉
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-11-16
Filing date: 2004-11-16
Publication date: 2005-04-27

Abstract

The improved excavator has front and back legs extending outwards to increase the support area to the excavator; double oil cylinders to drive the swinging gyratory arm for homogeneous stress, balance and no rocking; and increased heat sink inside the oil path to lower oil temperature and prolong the life of the oil cylinder. The present invention has high efficiency, simple structure, high safety and reliability and low cost.

Description

Excavator

Technical field:

The invention belongs to the excavator class, particularly relate to a kind of stressed evenly, stable working, the excavator that is active in one's movements.

Background technology:

Four supporting legs are vertically and land before and after the excavator of the same type that uses on the well-known building site at present, Area of bearing is little, when scraper bowl is worked, the fuselage shakiness is rocked bigger, simultaneously, the oil cylinder piston masthead lands supporting leg in the place ahead of supporting leg, therefore, oil cylinder exposes and connects dust easily, and piston is easy to wear.In addition, turning to by single cylinder of digger revolving arm drives, and rocks because of unbalance stress causes revoliving arm and fuselage.Usually, excavator is directly squeezed into each oil cylinder to the oil in the fuel tank with oil pump, and when arriving the environment temperature rising summer, the oily temperature in the fuel tank also increases, and causes the temperature in the oil cylinder to raise, and the oil cylinder heating is excessive, the application life of having reduced oil cylinder,

Summary of the invention:

Main purpose of the present invention be to overcome above deficiency and provide a kind of stressed evenly, the stable working excavator that do not rock, be active in one's movements.

The technical solution adopted for the present invention to solve the technical problems is: it is made up of chassis, wheel, revoliving arm, reversing frame, scraper bowl, front and back bearing, front and back supporting leg, control frame, internal combustion engine, oil cylinder, oil pipe, it is characterized in that:

(1), two rear supports 1 are stretched backward, become 30 ° of angle forks respectively with chassis 2 horizontal plane center lines, and downward-slopingly become 30 ° of angles with horizontal plane, two rear support leg 3 usefulness conventional methods flexibly connect with two rear supports 1 respectively, the end hinge joint of oil cylinder piston bar 4 is on rear support leg 3, oil cylinder 5 be hinged on 2 rear ends, chassis below, two preceding bearings 6 are separately fixed on the vertical plane vertical with the center chassis line of 2 both sides, chassis, and downward-slopingly become 30 ° of angles with horizontal plane, two front leg strut 7 usefulness conventional methods flexibly connect with two preceding bearings 6 respectively, the end of oil cylinder piston bar 8 is connected on the front leg strut 7, oil cylinder 9 be hinged on both sides, 2 middle part, chassis below, supporting leg 3 before and after ground pawl 10 is supported on by axle, 7 top, ground pawl 10 can rotate around the axis;

(2), revoliving arm 11 is connected on the chassis 2, driving revoliving arm 11 with two oil cylinders 12 swings, two oil cylinder piston bars 24 respectively with the both sides of revoliving arm 11 on the ear 13 that welds hinged, two oil cylinder 12 ends are fixed on the vertical junction plate 14 that chassis 2 is welded with nut respectively;

(3), be fixed with radiator 16 near 2 one side edge of internal combustion engine 15 end chassis of dredging machine, fuel tank 17 tops connect the petroleum pipeline 18,19 of two parallel connections, and respectively have a valve 20,21 respectively, wherein a petroleum pipeline 18 directly leads to oil pump 22, and another root petroleum pipeline 19 connects radiator 16.

Advantage and good effect that the present invention has are: the front and back supporting leg is outwards diverged the Area of bearing that has increased excavator, and drives the revoliving arm swing with two oil cylinders, and is stressed even, so, fuselage and revoliving arm steadily do not rock during excavator work, can reduce the oil temperature because of having increased radiator again, thereby prolong the working time, high efficiency, improved the application life of oil cylinder, simple in structure, processing easily, safe and reliable, cost is low.

Description of drawings:

Fig. 1 is a supporting leg scheme of installation before and after the excavator.

Fig. 2 is Fig. 1 schematic top plan view.

Fig. 3 is digger revolving arm and two oil cylinder connection diagrams.

Fig. 4 is Fig. 3 schematic top plan view.

Fig. 5 is the oil circuit schematic diagram of fuel tank, oil pump and radiator.

Among Fig. 1-Fig. 5: 1. rear support, 2. chassis, 3. rear support leg,

4. oil cylinder piston bar, 5. oil cylinder, 6. before bearing, 7. front leg strut,

8. oil cylinder piston bar, 9. oil cylinder, 10. pawl, 11. revoliving arms,

12. oil cylinder, 13. ears, 14. vertical junction plates, 15. internal combustion engines,

16. radiator, 17. fuel tanks, 18. petroleum pipelines, 19. petroleum pipelines,

20. valve, 21. valves, 22. oil pumps, 23. threeways,

24. the oil cylinder piston bar,

The specific embodiment:

For further understanding summary of the invention characteristics of the present invention and effect following examples for example now, and conjunction with figs. is described in detail as follows, and sees also Fig. 1-Fig. 5.

As Fig. 1, shown in Figure 2: two rear supports 1 of excavator are stretched backward, become 30 ° of angles with chassis 2 horizontal plane center lines respectively, and downward-slopingly become 30 ° of angles with horizontal plane, two rear support leg 3 usefulness conventional methods flexibly connect with two rear supports 1 respectively, the end of oil cylinder piston bar 4 is connected on the rear support leg 3, oil cylinder 5 be hinged on 2 rear ends, chassis below, two preceding bearings 6 are separately fixed on the vertical plane vertical with the center chassis line of 2 both sides, chassis, and downward-slopingly become 30 ° of angles with horizontal plane, two front leg strut 7 usefulness conventional methods flexibly connect with two preceding bearings 6 respectively, the end of oil cylinder piston bar 8 is connected on the front leg strut 7, oil cylinder 9 be hinged on both sides in the middle of the chassis 2 below, with oil cylinder 5,9 drive front and back supporting leg 3 respectively, 7 rise and fall, oil cylinder 5,9 do not expose and prevent dust, the oil cylinder long service life is because increased the Area of bearing of excavator, changed the support direction, so when excavator was worked, fuselage did not steadily rock.The bottom of supporting leg 3,7 before and after ground pawl 10 is supported on by axle, ground pawl 10 can rotate around the axis, and it can angle changing behind end-of-job, be upwards packed up ground pawl 10 with construction plant gradient difference, and it is little to take up space.

As shown in Figure 3, Figure 4: revoliving arm 11 is connected on the chassis 2, driving revoliving arm 11 with two oil cylinders 12 swings, two oil cylinder piston bars 24 respectively with revoliving arm 11 two sides on the ear 13 that welds hinged, two oil cylinder 12 ends are fixed on the vertical junction plate 14 that chassis 2 is welded with nut respectively, two oil cylinder 12 one-in-and-one-outs drive revoliving arm 11 and swing, stressed even, revoliving arm 11 can not rock.

As shown in Figure 5: be fixed with radiator 16 in a side edge near internal combustion engine 15 end chassis of dredging machine 2, fuel tank 17 tops connect the petroleum pipeline 18 of two parallel connections by threeway 23,19, two petroleum pipelines 18, have a valve 20 on 19 respectively, 21, open valve 20 valve-offs 21, then wherein a petroleum pipeline 18 directly leads to oil pump 22, when the temperature that especially arrives summer when working long hours continuously raises, the oil temperature rise, at this moment, valve-off 20 is opened valve 21, the oil that then connects another root petroleum pipeline 19 of radiator 16 enters oil pump 22 through radiator 16, like this, the oil temperature of squeezing in the oil cylinder descends, and the oil cylinder heating has reduced, thus the application life of having improved oil cylinder.

Its advantage is: stressed evenly, stable working, fuselage and revoliving arm do not have rock, the long service life of oil cylinder, the working time high efficiency that prolonged, simple in structure, easy processing, safe and reliable, cost is low.

Claims

1, a kind of excavator, it is made up of chassis, wheel, revoliving arm, reversing frame, scraper bowl, front and back bearing, front and back supporting leg, control frame, internal combustion engine, oil cylinder, oil pipe, it is characterized in that:

(1), two rear supports (1) are stretched backward, become 30 ° of angles with chassis (2) horizontal plane center line respectively, and downward-slopingly become 30 ° of angles with horizontal plane, two rear support legs (3) flexibly connect with two rear supports (1) respectively with conventional method, the end of oil cylinder piston bar (4) is connected on the rear support leg (3), oil cylinder (5) be hinged on rear end, chassis (2) below, two preceding bearings (6) are separately fixed on the vertical plane vertical with the center chassis line of both sides, chassis (2), and downward-slopingly become 30 ° of angles with horizontal plane, two front leg struts (7) flexibly connect with two preceding bearings (6) respectively with conventional method, the end of oil cylinder piston bar (8) is connected on the front leg strut (7), oil cylinder (9) be hinged on both sides in the middle of the chassis (2) below, supporting leg (3) before and after ground pawl (10) is supported on respectively by axle, (7) top, ground pawl (10) can rotate around the axis;

(2), revoliving arm (11) is connected on the chassis (2), driving revoliving arm (11) with two oil cylinders (12) swings, two oil cylinder piston bars (24) respectively with the both sides of revoliving arm (11) on the ear (13) that welds hinged, two oil cylinders (12) end is fixed on the vertical junction plate (14) that chassis (2) is welded with nut respectively;

(3), be fixed with radiator (16) near (2) side edge of internal combustion engine (15) end chassis of dredging machine, fuel tank (17) top connects two petroleum pipelines in parallel (18), (19), and respectively have a valve (20), (21) respectively, wherein a petroleum pipeline (18) directly leads to oil pump (22), and another root petroleum pipeline (19) connects radiator (16).