CN204384806U - A kind of synchronous lifting device - Google Patents

Abstract

The utility model discloses a kind of synchronous lifting device, comprise Hydraulic Pump (3), fuel tank (9) and motor (10), it comprises: the hydraulic actuating cylinder (1) that also can stretch at vertical direction of multiple vertical setting; Article two, the change-over valve (2) that is communicated with rodless cavity with the rod chamber of described hydraulic actuating cylinder (1) respectively of branch road.Synchronous lifting device provided by the utility model, hydraulic actuating cylinder on multiple vertical direction is set, by Hydraulic Pump for whole device provides hydraulic oil, drive the rise and fall of hydraulic actuating cylinder 1, also comprise respectively by the change-over valve of different communication in the rod chamber and rodless cavity of hydraulic actuating cylinder, change the mode of communicating of change-over valve, hydraulic actuating cylinder rise and fall can be driven, hydraulic efficiency gear is stable, is not easily damaged, and result of use is better than mechanical jacking system.

Description

A kind of synchronous lifting device

Technical field

The utility model relates to manufacturing machine technical field, particularly relates to a kind of synchronous lifting device.

Background technology

In process of production, need product shift position, for aluminium ingot, usually need operation aluminium ingot being promoted or reduces, this just needs to provide very huge bearing force, conventional lifting mode is the hoisting force being provided vertical direction by worm gear and worm screw, aluminium ingot is promoted or declines.

But existing hoisting way exists some problems, such as, worm gear and worm screw are are easily worn and torn, the defect that worm gear and worm screw there will be in the stage designed and process and installation process, and under the effect being subject to the huge gravity of aluminium ingot, worm gear easily fracture damage occurs; Worm screw, due to the wearing and tearing of worm gear, when being elevated, because of stressed excessive, also easily occurs damaging.After wearing and tearing appears in worm gear and worm screw; cause out the cross beam movement on trolley both sides asynchronous; dolly cannot normally run, and must change it, but because the position at scene is narrow when changing; operating difficulties when changing worm and gear and carry out crossbeam leveling; need to expend considerable time, the overlong time of shutdown, and hand labor intensity is too high; more the spare part expense rating of transducer set worm gear and worm screw is huge, causes the waste of fund.Timing Belt also easily ruptures, and causes the afunction of trolley rise and fall, and frequent replacing Timing Belt also can cause the floor time of long period.Because every limit of lifting mechanism is made up of two groups of worm gears and worm screw, when one group occurs wearing and tearing, when resistance strengthens, umbrella tooth reductor, due to overload, is easy to fracture.Back-up ring also easily comes off, and causes out trolley both sides crossbeams rise and decline asynchronous, if in the forfeiture situation of discharging trolley function by force operation can damage equipment.

Therefore, how designing a kind of jacking equipment providing enough bearing forces, and be not easily damaged, is those skilled in the art's technical issues that need to address.

Utility model content

The synchronous lifting device that the purpose of this utility model is to provide, this elevator can provide enough bearing forces, makes the product lifted rise or decline, and is not easily damaged, and reduces because the frequent economic loss changed parts and bring.

For solving the problems of the technologies described above, the utility model provides a kind of synchronous lifting device, and comprise Hydraulic Pump, fuel tank and motor, it comprises:

The hydraulic actuating cylinder that also can stretch at vertical direction of multiple vertical setting;

Article two, the change-over valve that is communicated with rodless cavity with the rod chamber of described hydraulic actuating cylinder respectively of branch road.

Preferably, also comprise the part flow arrangement between rodless cavity and described change-over valve being communicated in described hydraulic actuating cylinder, by described part flow arrangement, the rodless cavity of an oil circuit from different described hydraulic actuating cylinders is connected.

Preferably, described part flow arrangement is flow divider-combiner.

Preferably, respectively flow regulating valve is set on the rod chamber of described change-over valve and described hydraulic actuating cylinder, loop between described change-over valve and the rodless cavity of described hydraulic actuating cylinder.

Preferably, the described flow regulating valve be connected with the rodless cavity of described hydraulic actuating cylinder is arranged on the loop between described change-over valve and flow divider-combiner.

Preferably, near oil inlet and the oil outlet of described hydraulic actuating cylinder, described flow regulating valve is communicated with side with described hydraulic actuating cylinder oil outlet near, the oil outlet of described Hydraulic Pump is neighbouring, hydraulic pipe on loop between described change-over valve and described fuel tank is hose assembly.

Preferably, also comprise the by pass valve (6) be arranged between described Hydraulic Pump and described fuel tank, described by pass valve is connected along described Hydraulic Pump to the direction of described fuel tank.

Preferably, also comprise the check valve being arranged at loop between Hydraulic Pump oil outlet and described change-over valve, described check valve is by path described Hydraulic Pump to described change-over valve.

Preferably, also comprise the hydraulic ga(u)ge being arranged at described check valve oil outlet, described hydraulic ga(u)ge is connected with described by pass valve, described Hydraulic Pump, described change-over valve simultaneously.

Preferably, the guide piece be arranged on outside multiple described hydraulic actuating cylinder is also comprised.

Synchronous lifting device provided by the utility model, hydraulic actuating cylinder on multiple vertical direction is set, by Hydraulic Pump for whole device provides hydraulic oil, drive the rise and fall of hydraulic actuating cylinder, also comprise respectively by the change-over valve of different communication in the rod chamber and rodless cavity of hydraulic actuating cylinder, change the mode of communicating of change-over valve, hydraulic actuating cylinder rise and fall can be driven, powerful bearing force can be provided by hydraulic actuating cylinder, and the good stability of hydraulic pressure, the object of synchronization lifting can be realized well, drive the weight motion be arranged on hydraulic actuating cylinder.Hydraulic efficiency gear is stable, is not easily damaged, and result of use is better than mechanical jacking system.

Accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the hydraulic tubing connection diagram of synchronous lifting device provided by the utility model;

Fig. 2 is the structural representation of synchronous lifting device provided by the utility model;

Fig. 3 is the birds-eye view of device in Fig. 2;

Fig. 4 is the front view of fuel tank in Fig. 2 and Fig. 3;

Fig. 5 is the lateral plan of fuel tank in Fig. 4;

Fig. 6 is the birds-eye view of fuel tank in Fig. 4.

Wherein:

Hydraulic actuating cylinder 1, change-over valve 2, Hydraulic Pump 3, flow divider-combiner 4, flow regulating valve 5, by pass valve 6, check valve 7, hydraulic ga(u)ge 8, fuel tank 9, motor 10.

Detailed description of the invention

Core of the present utility model is to provide a kind of synchronous lifting device, and this device can drive the great object of weight, is not easily damaged, stable.

In order to make those skilled in the art understand synchronous lifting device provided by the utility model fully, below in conjunction with accompanying drawing and concrete embodiment, scheme provided by the utility model is described in detail.

As shown in Figure 1, be the hydraulic tubing schematic diagram of a kind of concrete embodiment of synchronous lifting device provided by the utility model.

In the synchronous lifting device that present embodiment provides, comprise the hydraulic actuating cylinder 1 that multiple vertical direction is arranged, weight placed thereon is driven by hydraulic actuating cylinder 1, hydraulic efficiency gear can provide larger bearing capacity, better than mechanical device support effect, and stable, the phenomenon of pause and transition in rhythm or melody can not occur, and is a kind of excellent support scheme.Hydraulic actuating cylinder 1 provides hydraulic oil by change-over valve 2 for its inside, makes hydraulic actuating cylinder 1 rise or decline.Change-over valve 2 is connected with rodless cavity with the rod chamber of hydraulic actuating cylinder 1 respectively by two different oil circuits, and switch the different path of change-over valve 2, fuel feeding 3 in different bar chambeies, realizes the rise and fall of hydraulic actuating cylinder 1.

Concrete environment for use is depended in the selection of Hydraulic Elements, and this device is mainly used in weight, and rise as aluminium ingot and put down, have the requirement of pressure and speed, the stressed deadweight primarily of aluminium ingot of hydraulic actuating cylinder 1 causes, and the impact of other power can be ignored.

The lifting values below providing a kind of factory conventional is example, and the specification introducing all parts is selected:

Usually can not more than 20 tons on a bont, by two hydraulic actuating cylinders 1 as support, each hydraulic actuating cylinder 1 will bear the weight of 10000kg*9.8N/kg, the load of each hydraulic actuating cylinder 1 is 98000N, this oil cylinder piston diameter is 125mm, stroke is 160mm, and maximum working pressure (MWP) p1 and the maximum flow ∑ Qmax of hydraulic actuating cylinder 1 are:

$p_1=\frac{F}{A}=\frac{F}{{\mathrm{\πR}}^2}=\frac{98000N}{3.14\×{\left(\frac{125}{2}\right)}^2\×{10}^{-6}{m}^2}\≈8.0\mathrm{MP}$

${\mathrm{\ΣQ}}_{\max }=2\×A\·v=2\×\mathrm{\π}{R}^2\·v=2\×3.14\×{\left(\frac{125}{2}\right)}^2\×{10}^{-6}{m}^2\·\frac{160\×{10}^{-3}}{10}=3.9\×{10}^{-4}{m}^3/s$

Meet normal operating needs.

The selection of Hydraulic Pump 3 is also very important, when selecting Hydraulic Pump 3, first determines the maximum working pressure (MWP) p of pump _p

p _p≥p ₁+ΣΔ _p

In formula:

P ¹represent hydraulic actuating cylinder 1 or HM Hydraulic Motor maximum working pressure (MWP);

Σ Δ _prepresent and export to line loss total between hydraulic actuating cylinder 1 or HM Hydraulic Motor entrance from Hydraulic Pump 3.

Because this system has inlet throttle speed governing, Σ Δ _pestimation gets 1.5MPa by empirical value.The then maximum working pressure (MWP) p of pump _p>=p ₁+ Σ Δ _p>=8.0+1.5=9.M5Pa

Below determine the flow Q of Hydraulic Pump 3 _p:

Q _p≥K(ΣQ _max)

In formula

K represents that system reveals coefficient, generally gets K=1.1 ~ 1.3

Σ Q _maxrepresent the maximum total flow of the hydraulic actuating cylinder 1 of action simultaneously, for the system using throttling governing in the course of the work, also comprise by pass valve 6, the minimum overflow amount of overflow valve 6 must be added, generally get 0.5 × 10 ^-4m ³/ s

Then Q _p>=K (Σ Q _max)=1.1 × 3.9 × 10 ^-4+ 0.5 × 10 ^-4m ³/ s ≈ 4.8 × 10 ^-4m ³/ s

For making Hydraulic Pump 3 have certain reservation for pressure, the rated pressure generally 25%-60% larger than maximum working pressure (MWP) of selected pump.Select to satisfy condition and require and the Hydraulic Pump 3 used in other places at present.Final decision uses the Hydraulic Pump 3 that model is G5.Its discharge capacity is 15.9ml/r, and pressure is 25MP.

According to above-mentioned condition, to the selection of motor 10, also there is corresponding requirement, according to the parameter of Hydraulic Pump 3, meeting this system requirements and under reducing the prerequisite of spare part spare unit rate, have selected model is that Y-series commonly uses motor.Its rated speed of rotation is 1440r/min, and rating horsepower is 5.5kw, and rated current is 12A, and rated voltage is 380V.Motor 10 coordinates with Hydraulic Pump 3, and its discharge capacity and pressure meet pressure and the discharge capacity of these system requirements.

According to the function that this system needs, this Systematic selection three position four-way directional control valve 2, it is specially solenoid directional control valve.During meta, require direct oil sump tank 9.The solenoid directional control valve latus rectum selected is 10mm, and its flow is 60L/min, maximum pressure 20MPa.Meet system requirements.

It should be noted that the selection of above-described parts be only a kind of concrete when preferred version, also can make corresponding adjustment according to the actual needs, these adjustment with improve also be the claimed scope of the utility model.

This device also comprises part flow arrangement, one end of part flow arrangement is communicated between the rodless cavity of hydraulic actuating cylinder 1 and change-over valve 2, the other end is connected with change-over valve 2, by the pressure in part flow arrangement regulator solution cylinder pressure 1, ensure that different hydraulic actuating cylinders 1 has identical pressure, make the rising or falling speed of hydraulic actuating cylinder 1 identical.Particularly, this part flow arrangement is flow divider-combiner 4.

Further, the flow regulating valve 5 arranged on the rod chamber of change-over valve 2 and hydraulic actuating cylinder 1, loop between change-over valve 2 and the rodless cavity of hydraulic actuating cylinder 1 respectively is also comprised.The hydraulic fluid flow rate that flow regulating valve 5 can flow out in adjustable change valve 2.Particularly, the flow regulating valve 5 be connected with the rodless cavity of hydraulic actuating cylinder 1 is arranged on the loop between change-over valve 2 and flow divider-combiner 4.

In order to improve the service life of this device further, respectively hydraulic actuating cylinder 1 oil inlet with near oil outlet, flow regulating valve 5 to be connected with hydraulic actuating cylinder 1 side oil outlet near, hydraulic pipe on loop near the oil outlet of Hydraulic Pump 3 and between change-over valve 2 and fuel tank 9 is set to hose assembly.

As shown in Figures 2 and 3, front view when each Hydraulic Elements are connected and birds-eye view is respectively.Wherein pipeline has steel pipe and flexible pipe two kinds, and hose assembly is flexible pipe.As shown in the figure, A represents hose assembly, i.e. flexible pipe; B represents steel pipe.Steel pipe is durable in use.Due to hydraulic valve commutation in hydraulic efficiency pressure system, all can produce very large impulsive force when the startup of system and stopping, producing vibrations in connection place.The Main Function using flexible pipe is damping, can reduce the generation of hydraulic efficiency pressure system connection place hydraulic fluid leak situation.And use flexible pipe easy disassembly, if system pipeline goes wrong or connection place seal ring damages, replacing that can be very fast, reduce maintenance time.

Be arranged at the by pass valve 6 between Hydraulic Pump 3 and fuel tank 9 on loop, by pass valve 6 is along Hydraulic Pump 3 to the direction path of fuel tank 9, and play the effect of protection hydraulic efficiency pressure system, when intrasystem hydraulic pressure is too high, hydraulic oil directly flow in fuel tank 9 from by pass valve 6.

When selecting by pass valve 6, according to the flow of system, and in line with reducing the requirement of standby redundancy rate as far as possible, by pass valve 6 latus rectum of this Systematic selection is 10mm, and maximum flow is 250L/min, and maximal regulated pressure is 31.5MPa, meets the operating needs of system.

Also comprise the check valve 7 be arranged between Hydraulic Pump 3 oil outlet and change-over valve 2 on loop, by path between Hydraulic Pump 3 to change-over valve 2, prevent hydraulic oil from refluxing, reach the effect of protection.

Hydraulic ga(u)ge 8 is connected with by pass valve 6, Hydraulic Pump 3 and change-over valve 2 simultaneously.Suitable hydraulic ga(u)ge 8 is selected, in the present system our hydraulic ga(u)ge of to be maximum pressure value be 16MP of selecting according to maximum system pressure.

In the present embodiment; additionally provide and be arranged at outside hydraulic actuating cylinder 1; namely the guide piece of the both sides of the multiple hydraulic actuating cylinders 1 distributed side by side is positioned at; guide piece is also vertically arranged; paralleling with the direction of hydraulic actuating cylinder 1, when lifting weight, avoiding rolling; the effect of protection can be played hydraulic actuating cylinder 1, do not mark in the accompanying drawings.

As shown in Figures 4 to 6, represent the front view of fuel tank 9, lateral plan and birds-eye view respectively, the design of fuel tank 9 also must consider its installation site, because fuel tank 9 need be arranged on dolly, height and width all must control within the specific limits, also will consider the heat dissipation problem of hydraulic oil.As shown in Figures 4 to 6,901 is fuel tank main body, and 902 is oil ga(u)ge, and 903 represent dividing plate and filtering net, sent by the hydraulic oil entered in fuel tank again, ensure that clean by filtering net after filtering.The cover plate of 904 expression fuel tanks, ensures the relative closure of fuel tank.The oil-sucking hole of 905 expression Hydraulic Pumps, 906 represent the integrated package and valve member that are installed on fuel tank, and 907 represent oil return pipe and filters, and 908 represent filler ports.

Above to the capable detailed introduction of synchronous lifting device provided by the utility model.Apply specific case herein to set forth principle of the present utility model and embodiment, the explanation of above embodiment just understands method of the present utility model and core concept thereof to help.Should, for the person of ordinary skill of the art, under the prerequisite not departing from the utility model principle, also can carry out some improvement and modification to the utility model, these improve and modify also within the claimed scope of the utility model.

Claims (10)

1. a synchronous lifting device, comprises Hydraulic Pump (3), fuel tank (9) and motor (10), it is characterized in that, comprising:

The hydraulic actuating cylinder (1) that also can stretch at vertical direction of multiple vertical setting;

Article two, the change-over valve (2) that is communicated with rodless cavity with the rod chamber of described hydraulic actuating cylinder (1) respectively of branch road.

2. synchronous lifting device as claimed in claim 1, it is characterized in that, also comprise the part flow arrangement between rodless cavity and described change-over valve (2) being communicated in described hydraulic actuating cylinder (1), by described part flow arrangement, the rodless cavity of an oil circuit from different described hydraulic actuating cylinders (1) is connected.

3. synchronous lifting device as claimed in claim 2, it is characterized in that, described part flow arrangement is flow divider-combiner (4).

4. synchronous lifting device as claimed in claim 2, it is characterized in that, respectively flow regulating valve (5) is set on described change-over valve (2) and the rod chamber of described hydraulic actuating cylinder (1), loop between described change-over valve (2) and the rodless cavity of described hydraulic actuating cylinder (1).

5. synchronous lifting device as claimed in claim 4, it is characterized in that, the described flow regulating valve (5) be connected with the rodless cavity of described hydraulic actuating cylinder (1) is arranged on the loop between described change-over valve (2) and flow divider-combiner (4).

6. synchronous lifting device as claimed in claim 5, it is characterized in that, the oil inlet of described hydraulic actuating cylinder (1) with near oil outlet, described flow regulating valve (5) to be communicated with described hydraulic actuating cylinder (1) that the oil outlet oil outlet that is neighbouring, described Hydraulic Pump (3) of side is neighbouring, hydraulic pipe on loop between described change-over valve (2) and described fuel tank (9) is hose assembly.

7. the synchronous lifting device as described in claim 1 to any one of claim 6, it is characterized in that, also comprise the by pass valve (6) be arranged between described Hydraulic Pump (3) and described fuel tank (9), described by pass valve (6) is connected along described Hydraulic Pump (3) to the direction of described fuel tank (9).

8. synchronous lifting device as claimed in claim 7, it is characterized in that, also comprise the check valve (7) being arranged at loop between Hydraulic Pump (3) oil outlet and described change-over valve (2), described check valve (7) is by path described Hydraulic Pump (3) to described change-over valve (2).

9. synchronous lifting device as claimed in claim 8, it is characterized in that, also comprise the hydraulic ga(u)ge (8) being arranged at described check valve (7) oil outlet, described hydraulic ga(u)ge (8) is connected with described by pass valve (6), described Hydraulic Pump (3), described change-over valve (2) simultaneously.

10. synchronous lifting device as claimed in claim 1, is characterized in that, also comprise the guide piece be arranged on outside multiple described hydraulic actuating cylinder.