CN2058917U

CN2058917U - Miniture dc hydraulic lift

Info

Publication number: CN2058917U
Application number: CN 89211439
Authority: CN
Inventors: 徐荫和
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-02-10
Filing date: 1989-02-10
Publication date: 1990-07-04

Abstract

The utility model relates to a miniature direct current hauling type lifting table used for overhead operation, which comprises a chassis, a working platform, a telescopic oil cylinder, an anti-rotation rack, a hydraulic power transmission system, an operating box and supporting wheels. The utility model is characterized in that a direct current power supply is taken as a power source, the front wheels of the supporting wheels, which are taken as steering wheels, are connected with a pull rod to steer, push and pull the lifting table. The chassis is integrated with an oil tank, and the whole machine having light structure is provided with a perpendicular indicator and an interlocking device for lifting and supporting. Therefore, the utility model is suitable for indoor use and occasions without alternating current and can be portably hauled by hand, and the miniature direct current hauling type lifting table has the advantages of convenient use and high stability.

Description

Miniture DC hydraulic lift

The utility model relates to a kind of hydaulic lift platform that is used to carry out aloft work, particularly relates to a kind of single flow hydaulic lift platform.

In the prior art, be used for the aloft work of installation and maintenance such as high-altitude illumination, driving, the hydaulic lift platform that is adopted all adopts alternating current as power supply, adopts the hand-hydraulic lifting once in a while.The YSD series V shape hydaulic lift platform that as above marine upright elevator factory produces, cylinder type hydraulic bay-lift, the inventor that Jiangdu Construction Machinery Plant produces be the HT Series Hydraulic bay-lift of the design-calculated YS200 of Shanghai Golconda hydraulic machinery factory series cylinder type hydraulic bay-lift and the production of Japanese MIYOSHI machinery Co., Ltd., all adopt alternating current as power source.This bay-lift can not use in the place of AC-less power; Both, also there be tying down of input electric wire just in the place that source of AC is arranged.Under some occasion, as the light and textile industries workshop,, can't adopt long touch block electric wire because loom gathers, also just can't use equipment such as alternating current hydaulic lift platform maintenance roof lamp and air-conditioning.The patent application that the inventor proposed on March 10th, 88, number of patent application is 88211505, has proposed a kind of " direct current self-propelled hydaulic lift platform ", has overcome the problem that above-mentioned prior art exists.But owing to gather at wayside equipment, the place that the space, aisle is narrow and small adopts direct current self-propelled hydaulic lift platform restive, has unavoidably when motor-driven walking misoperation to collide with equipment.

The purpose of this utility model is to provide a kind of and can uses and make a people light haul to move in the AC-less power place, is the direct current haul type hydaulic lift platform of power supply with the small battery.

The technical solution of the utility model is: the same chassis, workplatform, telescopic oil cylinder, anti-pivoted frame, hydraulic power transmission system, panel block, level indicator, supporting leg, cramp bar, cramp bar wrench and the bogie wheel of comprising with existing small-sized hydraulic bay-lift.Characteristics of the present utility model are: in order to dwindle the volume of complete machine bottom, chassis and fuel tank design is in aggregates, and the sealed cavity that promptly utilizes the chassis is as fuel tank; Two front-wheels of four bogie wheels are wheel flutter, and axially mounting distance is shorter, makes the chassis be equivalent to three point supportings, and the middle part cylinder lever connecting rod of its front wheel spindle can turn to or the push-and-pull bay-lift; Hydraulic power transmission system is to connect DC machine by storage battery direct supply is provided, and the output shaft of DC machine connects the oil pump main shaft, and the oil inlet of oil pump is connected and the integrant fuel tank in chassis, and oil outlet is connected telescopic oil cylinder.

In order to turn to leggiero and the push-and-pull bay-lift, two front-wheels of bogie wheel are loaded on the wheel shaft by single-row radial ball bearing; Wheel shaft is loaded on the axle block, middle cylinder lever connecting rod; By single direction thrust ball bearing, screw and nut, it is an integral body that a steering base is connected with axle block; Steering base is screwed on the chassis.The operator exerts oneself by pull bar, can axle block be turned to respect to the chassis.So the operator can come push-and-pull or turn to complete machine by pull bar.

Level indicator of the present utility model can adopt a kind of " the vertical indicating instrument of hydaulic lift platform ", it be inventor's design-calculated and with the application simultaneously separate case apply for a patent.The structure of this vertical indicating instrument is: internal diameter and telescopic oil cylinder descend the sleeve of joint cylinder barrel external diameter sliding fit most, be fastened on the cylinder barrel with screw, on this sleeve outer a set pin is arranged, hanging a pointer that can freely swing on the pin, below pointer, fixing vertical zero-bit indication plate.The pointer by gravity is vertical with horizontal surface all the time, and with the height of cramp bar spanner adjustment cramp bar, until the zero-bit sign that the vertical zero-bit plate of pointed is marked, then the axis of telescopic oil cylinder is vertical with horizontal surface.This vertical indicating instrument structure is very simple, easy to use.

The utility model preferably should adopt lifting and supporting interlock system, in case do not put down the cramp bar maloperation of lifting at once.The structure of its interlock system is: fixed installation limit switch and positioning plate on the chassis, and distance between the two just in time is when putting into the cramp bar spanner, the normally closed interlock of limit switch disconnects, and cuts off the power supply of control path.After the operator only mentions wrench, could operate the lifting of bay-lift, play security personnel's effect.This lifting is also applied for a patent by inventor's design and with the application's while separate case with the supporting interlock system.

Outstanding advantage of the present utility model is that structure is light and handy, uses direct current (DC), and the narrow and small power supply in particularly suitable covered court connects the place of inconvenience, and is easy to use, flexible.

Further specify a specific embodiments of the present utility model below in conjunction with accompanying drawing.

Fig. 1 is an overall structure scheme drawing of the present utility model.

Fig. 2 is the structural representation of a kind of hydraulic power transmission system of the present utility model.

Fig. 3 is the amplification view at A position among Fig. 2.

Fig. 4 is a kind of hydraulic system principle figure of the present utility model.

Fig. 5 is the structural representation that turns to the supporting front-wheel.

Fig. 6 is the electrical schematic diagram of the present embodiment.

Number in the figure is: 1---workplatform, and 2---telescopic oil cylinder, 3---anti-pivoted frame, 4---hydraulic power transmission system, 5---panel block, 6---the chassis, 7---storage battery, 8---supporting leg, 9---cramp bar, 10---positioning plate, 11---bogie wheel, 12---the cramp bar spanner, 13---limit switch, 14---pull bar, 15---ladder, 16---level indicator, 17---DC machine, 18---adapter sleeve, 19---tight loop, 20---oil cylinder seat, 21---check valve, 22---" 0 " shape seal ring, 23---pressure relay, 24---adapter plate, 25---seal ring, 26---integrated package, 27---fuel tank, 28---sebific duct, 29---joint, 30---rubber hose coupling, 31---joint, 32---oil filter, 33---oil suction pipe, 34---oil pump, 35---terminal pad, 36---the oil pump half-coupling, 37---slide block, 38---DC machine series connection joint, 39---screw, 40---by pass valve, 41---compression indicator, 42---electromagnetic valve, 43---screw, 44---steering base, 45---screw, 46---packing ring, 47---steering shaft, 48---single direction thrust ball bearing, 49---axle block, 50---packing ring, 51---nut, 52---spring cotter, 53---wheel shaft, 54---circlip for shaft, 55---single-row radial ball bearing, 56---circlip for bore, 57---wheel cap, 58---spacer ring.

An embodiment of the present utility model is as follows: referring to Fig. 1, its structure is to be chassis 6 with a frame, and four solid rubber bogie wheels 11 are arranged below chassis 6, and a pull bar 14 is installed in the middle of two front-wheel, carries out haul and turns to task.When the haul walking, telescopic oil cylinder 2 is dropped to extreme lower position, and four cramp bars 9 that are fixed in chassis 6 are rotated up, four supporting legs 8 on the cramp bar 9 return back in 6 frameworks of chassis the volume when dwindling walking, simultaneously cramp bar spanner 12 is lain against in two positioning plates 10, the end that makes wrench 12 cuts off the push rod compression of limit switch 13 the control path power supply of lifting unit.When aloft work, earlier cramp bar spanner 12 is mentioned, then limit switch 13 promptly automatically resets and connects the control path power supply, supporting leg 8 being gone to the diagonal positions on chassis 6 again and pulling out its telescopic section makes four fulcrums be adjusted to a square, the switching cramp bar 9 then, observe vertical indicating instrument (being level indicator) 16, the calibration telescopic oil cylinder makes it to be in the vertical-horizontal surface state.Ladder 15 is housed on the chassis 6, and the staff climbs up workplatform 1 from ladder 15.Workplatform 1 is fixed in one group of telescopic oil cylinder 2 upper end, the anti-pivoted frame 3 of dress outside telescopic oil cylinder 2, prevent that workplatform 1 from rising, descending and rotating arbitrarily during work, when workplatform 1 descended, the connecting rod that respectively saves of anti-pivoted frame 3 was horizontal and overlaps.Telescopic oil cylinder 2 is made up of six cylinder barrels, tight loop of outermost layer cylinder barrel close fit, and fixing by the fuel tank in the middle of bolt and the chassis 6 27.

The hydraulic power transmission system of the present embodiment is seen Fig. 2 and Fig. 3, and its system principle is seen Fig. 4.DC machine 17 housings are fixed on fuel tank 27 housings by adapter sleeve 18, and its main shaft connects with gear-type oil pump 34 by plunging joint 36,38 and slide block 37.The oil inlet of oil pump 34 leads to fuel tank 27 bottom grooves by oil suction pipe 33 and screen filter 32, thus oil suction.The oil outlet of oil pump 34 is connected to check valve 21 and by pass valve 40 respectively by joint 31, sebific duct 30.P is that pressure oil flows among Fig. 3, and check valve 21 is connected to by sebific duct 28 stretches telescopic oil cylinder 2.The outlet of by pass valve 40 passes to fuel tank 27.When pressure during greater than rated pressure, then by pass valve 40 beginning off-loads, partial pressure oil is back to fuel tank 27 through by pass valve 40.Telescopic oil cylinder 2 oil outlets pass to fuel tank 27 after sebific duct 28 is connected to electromagnetic valve 42.After electromagnetic valve 42 was opened, then telescopic oil cylinder 2 was pressed into fuel tank 27 with fluid through sebific duct 28 and electromagnetic valve 42 inner passages by deadweight.Storage battery 7 is fixed in the chassis 6.

The haul steering hardware of the present embodiment is to adopt four bogie wheels 11, and two front-wheels wherein are wheel flutter, referring to Fig. 5.The axial mounting distance of its two front-wheel is shorter, so chassis 6 is equivalent to three point support.Two front-wheels are loaded on the wheel shaft 53 by single-row radial ball bearing 55, and axle block 49 is housed on wheel shaft 53 in the middle of the two-wheel.Middle cylinder lever connecting rod 14; By single direction thrust ball bearing 48, screw 45 and nut 51 steering base 44 being connected with axle block 49 is an integral body; Four screws 43 of its steering base 44 usefulness are fixed on the chassis 6.Plate changes and push-and-pull pull bar 14, bay-lift is turned to and walks.

The electrical principle of the present embodiment is seen Fig. 6.Power supply DC adopts the small-sized cranking battery of 6-QH-54, and GLK is a source switch, and FL is the diverter of amperemeter/ammtr, and LX is one spacing (stroke) switch, and it is by 14 controls of cramp bar spanner.After mentioning cramp bar spanner 14, a pair of normally closed contact closure of limit switch (as figure), the power supply of connection control path, otherwise control path is in power-off condition.ISA, IJA and ITA are respectively the rising of operation box panel, the button that descends and stop, and 2SA, 2JA and 2TA are respectively the rising on the workplatform, the button that descends and stop.When pushing rising button SA, contactless switch 1C coil is connected, a pair of main contact closure of often opening, make the running of rising motor D, the a pair of auxiliary contact closure of often opening makes the closed self-insurance of circuit, and another makes rising indicator lamp SD bright to often opening the auxiliary contact closure.During by decline button JA, contactless switch 2C coil is connected, and a pair of normally closed main contact disconnects the power circuit that makes the rising motor D to cut off, and also promptly can not make the running of rising motor D in the decline process simultaneously, often opens the auxiliary contact closure for two pairs, and a pair of decline indicator lamp JD that makes is bright.Another is to connecting electromagnetic valve coil DT simultaneously except that self-insurance, electromagnetic valve is opened, and workplatform descends with oil cylinder, after dropping to extreme lower position, must the normally closed main contact of 2C be resetted by stop button TA, otherwise then rise motor D with regard to fail to start during by the rising button in next time.This interlocking circuit design-calculated purpose is for the personal security of ascending a height being descended when the power circuit of rising motor D or the control circuit et out of order, promptly after pressing stop button TA, motor still remains in operation, platform continues to rise, and makes the personnel of ascending a height produce the feared state of mind easily, and can change immediately by decline button JA this moment, the power circuit of rising motor D is cut off, motor just shuts down, and bench board descends simultaneously, can be at platform decline back trouble-shooting.

Claims

1, a kind of small-sized DC haul type hydaulic lift platform that is used to carry out aloft work, comprise chassis 6, workplatform 1, telescopic oil cylinder 2, anti-pivoted frame 3, hydraulic power transmission system 4, panel block 5, level indicator 16, supporting leg 8, cramp bar 9, back plate spanner 12 and bogie wheel 11, it is characterized in that:

(1) chassis 6 is an integral body with fuel tank, and the sealed cavity that promptly utilizes the chassis is as fuel tank;

(2), two front-wheels of bogie wheel 11 are wheel flutter, axially mounting distance is shorter, its middle part cylinder lever connecting rod 14;

(3), hydraulic power transmission system 4 is that storage battery 7 connects DC machine 17 direct supply is provided, the output shaft of DC machine 17 connects oil pump 34 main shafts, oil pump 34 oil inlets are connected and chassis 6 integrant fuel tanks, oil outlet is connected telescopic oil cylinder 2.

2, hydaulic lift platform according to claim 1 is characterized in that two front-wheels of bogie wheel 11 are loaded on the wheel shaft 53 by single-row radial ball bearing 55, and axle block 49, middle cylinder lever connecting rod 14 are housed on wheel shaft in the middle of the two-wheel; By single direction thrust ball bearing 48, screw 45 and nut 51, it is an integral body that a steering base 44 is connected with axle block 49; Steering base 44 usefulness screws 43 are fixed on the chassis 6.

3, hydaulic lift platform according to claim 1, it is characterized in that level indicator 16 is to be sleeved on telescopic oil cylinder 2 to descend a vertical indicating instrument on the joint cylinder barrel external diameter most, it is the sleeve that an internal diameter and telescopic oil cylinder 2 descend joint cylinder barrel external diameter sliding fit most, be fastened on the cover cylinder with screw, one set pin is arranged on the external diameter of this sleeve, hang a pointer that can freely swing on the pin, below pointer, fixing vertical zero-bit indication plate.

4, hydaulic lift platform according to claim 1, it is characterized in that fixed installation limit switch 13 and positioning plate 10 on the chassis 6, distance between the two just in time is when putting into cramp bar spanner 12, and the normally closed interlock of limit switch 13 disconnects, and cuts off the power supply of control path.