CN207581265U - A kind of lifting gear for pulling up leveling - Google Patents

Abstract

The utility model is related to a kind of lifting gears particularly for large lift height.The lifting gear of the utility model has basic framework, for the lifting frame of receiving live load and for making driving device of the lifting frame relative to basic framework vertical lifting, which includes two sets of hydraulic drive units i.e. the first hydraulic drive unit and the second hydraulic drive unit that are symmetrical set；Third hydraulic drive unit is set between lifting frame and basic framework, third hydraulic drive unit includes fixation kit and moving assembly, it is fixedly connected at the top of the fixation kit of third hydraulic drive unit and basic framework, the moving assembly of third hydraulic drive unit is fixedly connected with lifting frame.Since third hydraulic drive unit can be finely adjusted lifting frame in lifting frame run-off the straight, so as to which lifting frame be made to be not susceptible to tilt in multiple two-way process, the stationarity of lifting frame and the reliability of system are effectively improved.

Description

A kind of lifting gear for pulling up leveling

Technical field

The utility model is related to a kind of large-scale lifting gear/lifting platform for being particularly suitable for large lift height, lifting dresses It puts and is used to receive lifting frame and at least one set of live load with a basic framework, one for making lifting frame relative to base The driving device of this frame vertical straight lifting.

Background technology

This lifting gear is used to lift the live load being placed on lifting frame.Such as in the industrial production, this is used Kind lifting gear makes material lift or drop in the big height of preferred 0.5m or even more than 20m, so that material leaves initial platform Face reaches target mesa.

It is high that lifting gear of the known lifting gear as described in PCT/EP2007/003519 etc. is primarily adapted for use in small lifting Degree, cannot be applicable in the application scenario of large lift height.Liter of the known lifting gear as described in CN201120139819.8 etc. Although falling unit is suitable for large lift height and large scale material, the driving device of the right and left is laterally inclined in material center of gravity Easily there are asynchronous problem when more from lifting frame table top center, and then lifting frame is caused to tilt, to life Production and use are made troubles.

At present, it is traditionally used for realizing the lifting gear of material vertical lift, especially four column lifting gears synchronize reality Existing mode, which often relies on, improves hydraulic circuit realization synchronization, the drawback is that：Hydraulic circuit is relative complex, and synchronism is by various Factor influences, such as processing and manufacturing error, leakage, and limited reliability, is still susceptible in use for some time not Stationary problem.Such as using precision and the higher high-end hydraulic circuit of reliability, cost is relatively expensive, system stability and reliable Property is easily influenced by poor environment or bad maintaining and is substantially reduced.

On the other hand, the table top of high height or lifting gear bottom are often stopped in some occasions, such as lifting gear Portion's inconvenient mounting and adjusting due to many reasons causes lifting frame to be difficult to the occasions such as leveling in bottommost, is easy to cause the bottom of based on The adjustment of the reduction lifting frame tilt quantity from bottom to top in portion there are inconvenience or even can not be implemented.Moreover, reduce lifting The force application location of the adjusting apparatus of frame tilt quantity needs the force application location of the driving device with lifting gear in itself identical, no Then, the additional torsion during adjusting easily causes new inclination, and the inside for increasing lifting gear contradicts, and reduces lifting dress The stability and service life put.

Utility model content

The purpose of this utility model is to design a kind of lifting gear of the type mentioned at the beginning and its installation, application method, Synchronization can be realized without high-precision hydraulic circuit by the third hydraulic drive unit with pull-up levelling function added, So as to effectively lifting frame be avoided to tilt.

In one embodiment, a kind of lifting gear is described.The device includes basic framework, for receiving live load Lifting frame and for making driving device of the lifting frame relative to basic framework vertical lifting；The driving device includes behaviour Control unit and two sets of hydraulic drive units i.e. the first hydraulic drive unit being symmetrical set and the second hydraulic-driven list Member；Third hydraulic drive unit is set between the lifting frame and basic framework；The third hydraulic drive unit includes Third hydraulic-driven fixation kit and third hydraulic-driven moving assembly, the third hydraulic-driven fixation kit with it is described basic Frame roof is fixedly connected, and the third hydraulic-driven moving assembly is fixedly connected with the lifting frame.

In a kind of embodiment of the embodiment described, the basic framework includes vertical column, main orbit, crossbeam Deng；The main orbit is same component with vertical column.

In a kind of embodiment of the embodiment described, the hydraulic cylinder of the third hydraulic drive unit and described the The hydraulic cylinder of one hydraulic drive unit or the second hydraulic drive unit is coaxial or conllinear.

In a kind of embodiment of the embodiment described, first hydraulic drive unit and the second hydraulic drive unit With identical performance and size, stroke and normal thrust and the first hydraulic-driven list of the third hydraulic drive unit Member or the second hydraulic drive unit are identical.

In a kind of embodiment of the embodiment described, the hydraulic cylinder of the third hydraulic drive unit is double acting Hydraulic cylinder or the hydraulic cylinder of the third hydraulic drive unit are the fuel-displaced single-action hydrocylinder of rod chamber oil inlet.

In a kind of embodiment of the embodiment described, the third hydraulic drive unit is located at first hydraulic pressure drive It is relatively low to be easier to occur pose when hysteresis, that is, lifting frame tilts in moving cell and the second hydraulic drive unit Side.

In the embodiments described, corresponding installation adjusting method is also disclosed.At one of the installation adjusting method In embodiment, operating personnel complete first liquid first after the basic framework and lifting frame installation and debugging are completed The installation and debugging of driving unit and the second hydraulic drive unit are pressed, in first hydraulic drive unit and the second hydraulic-driven After the completion of unit installation and debugging, then complete the installation and debugging of the third hydraulic drive unit.

In a kind of embodiment of the installation adjusting method, first hydraulic drive unit and the second hydraulic pressure are being carried out During the installation and debugging of driving unit, operating personnel are reviewed and validate described by lifting reciprocating working more than twice It is easier that position when hysteresis, that is, lifting frame tilts occurs in first hydraulic drive unit and the second hydraulic drive unit The relatively low side of appearance.

In a kind of embodiment of the installation adjusting method, in lifting reciprocating working every time, operating personnel are lifting Quality (or weight) the equivalent article almost equal with lifting gear nominal load (or maximum allowable load) is put into frame.

In one embodiment of the installation adjusting method, in the installation and debugging for carrying out the third hydraulic drive unit In the process, the installation of the third hydraulic drive unit should meet following condition with adjustment：First hydraulic drive unit, Two hydraulic drive units and third hydraulic drive unit are respectively mounted completion and after the tightening of related fittings whole or lockings, described Lifting frame integral level or a small amount of inclination only allowed when lifting frame is located at maximum height table position.

In the embodiments described, corresponding application method is also disclosed.In one embodiment of the application method, Operating personnel make first hydraulic drive unit and the second hydraulic drive unit act simultaneously by the manipulation unit Power drive lifting frame rises close to target mesa, and the third hydraulic drive unit does not work and do not generate driving at this time Power；If a small amount of inclination that the lifting frame only allows, operating personnel make first liquid by the manipulation unit Pressure driving unit and the second hydraulic drive unit, which are simultaneously stopped, to be risen and the lifting frame is made to be maintained near target mesa；If What the lifting frame occurred is tilted beyond allowed band, then operating personnel drive first hydraulic pressure by the manipulation unit Moving cell and the second hydraulic drive unit, which are simultaneously stopped, to be acted on and keeps respective hydraulic cylinder in-cylinder pressure constant simultaneously and act on Power is constant, and the third hydraulic drive unit is made to generate upward active force, the lifting frame is pushed to continue up；When When the inclination that the lifting frame occurs is not above allowed band, operating personnel make the third liquid by the manipulation unit Pressure driving unit fails and keeps that the hydraulic cylinder in-cylinder pressure of third hydraulic drive unit is constant and active force is constant.

In a kind of embodiment of the application method, when the lifting frame needs to drop near target mesa, behaviour Make personnel makes the third hydraulic drive unit not work and does not generate driving force, then pass through the behaviour by the manipulation unit Control unit makes first hydraulic drive unit and the second hydraulic drive unit generate certain effect power simultaneously and gravity is overcome to make institute State lifting frame decline and close to target mesa；If a small amount of inclination that the lifting frame only allows, operating personnel are led to Crossing the manipulation unit makes first hydraulic drive unit and the second hydraulic drive unit be simultaneously stopped and act on and make the liter Drop frame is maintained near target mesa；If what the lifting frame occurred is tilted beyond allowed band, operating personnel pass through The manipulation unit makes first hydraulic drive unit and the second hydraulic drive unit is simultaneously stopped effect and while keeps each It is constant and active force is constant, and the third hydraulic drive unit is made to act power and overcomes gravity from hydraulic cylinder in-cylinder pressure And decline the lifting frame；When the inclination that the lifting frame occurs is not above allowed band, operating personnel pass through Manipulation unit makes the third hydraulic drive unit fail and keeps the hydraulic cylinder in-cylinder pressure of third hydraulic drive unit Constant and active force is constant.

The conventional methods such as improvement hydraulic circuit or high-precision hydraulic circuit different from the prior art realize that lifting frame exists Real-time synchronization technique that is synchronous and making lifting frame not run-off the straight is remained in lifting process, the technology of the utility model is thought Road is, ignores the asynchronous problem of hydraulic cylinder in lifting frame lifting process using end simultaneous techniques and only ensures to lift Frame is reached home the end synchronous regime of neighbouring position.

The technical thought that this end synchronizes is very useful in practical operation, is carried to solve the problems, such as that lifting gear is asynchronous A kind of completely new technical thought is supplied.

On the one hand, the lifting gear of large lift height is in lifting process, and with being continuously increased for adjustable height, hydraulic pressure returns Any small leakage, foozle, component loss etc. are all easy to cause the continuous amplification of the asynchronous problem of hydraulic cylinder in road, It according to real-time synchronization thinking, then is easy to greatly increase cost, reduces system service life and stability, and use end The synchronous thinking in end, then can ignore the asynchronous problem in lifting process, system cost can be reduced effectively, system service life It can be fully guaranteed with stability.

On the one hand, user of service often only focuses on whether end synchronizes in operation and control lifting gear, because of this relationship It can facilitate disengaging lifting frame to material, and be not concerned with that a small amount of inclination or asynchronous whether occurs in lifting process, because A small amount of inclination or it is asynchronous will not generate any influence, also tend to not noticeable, it is clear that real-time synchronization technique has ignored this True use demand in actual mechanical process, and end simultaneous techniques meets this true use demand well, thus The technical issues of the utility model solves the problems, such as substantially is that end is asynchronous, and the prior art solution based on real-time synchronization technique Certainly the technical issues of is substantially whole asynchronous problem.

Moreover, in some occasions, as lifting gear often stop at high height table top or lifting gear bottom because Many reasons and inconvenient mounting and adjusting causes lifting frame to be difficult to the occasions such as leveling in bottommost, be easy to cause based on bottom The adjustment of reduction lifting frame tilt quantity from bottom to top there are inconvenience or even can not be implemented.And the utility model provides Lifting gear pass through the pull-up leveling knot that is fixedly connected at the top of the third hydraulic-driven fixation kit and the basic framework Structure is very suitable for these occasions, can keep optimum performance and state in the case that often stop at high height table top, also can be Inconvenience leveling occasion in bottom ensures bottom leveling.

Particularly, hydraulic cylinder and first hydraulic-driven of the utility model by the third hydraulic drive unit The unit or hydraulic cylinder of the second hydraulic drive unit is coaxial or collinear structure, can make the force position of third hydraulic drive unit It puts identical with the force application location of the first hydraulic drive unit or the second hydraulic drive unit, thus adjustment process can be substantially reduced In additional torsion caused by new inclination, and the inside for reducing lifting gear contradicts, improve lifting gear stability and Service life.

Therefore, the beneficial effects of the utility model include：

First, the utility model overcomes the technology prejudice of whole real-time synchronization, aims at user in use true Real use demand, that is, end synchronisation requirement solves the tilt problem of lifting frame using end simultaneous techniques；

Second, end simultaneous techniques of the utility model based on third hydraulic drive unit can effectively solve the first liquid Driving unit and the end stationary problem of the second hydraulic drive unit are pressed, system cost can be reduced effectively, system service life It can be fully guaranteed with stability；

Third, the main orbit and the vertical column of basic framework described in the utility model are same component, have structure Simply, number of parts is few, the advantages such as at low cost；

4th, the first hydraulic drive unit described in the utility model, the second hydraulic drive unit have identical performance and Size, thus, convenient for designing, processing, purchasing, installing and debugging, cost can be reduced from another point of view, improve system stability and Reliability；

5th, third hydraulic drive unit described in the utility model is located at first hydraulic drive unit and the second hydraulic pressure It is easier that pose relatively low side when the hysteresis, that is, lifting frame tilts occurs in driving unit, compared to described the Three hydraulic drive units are located at pose relatively high side when the lifting frame tilts, and can effectively reduce the first hydraulic-driven The long stroke of unit and the second hydraulic drive unit, conducive to energy consumption and cost is saved；

6th, the installation and debugging method and more than twice of the third hydraulic drive unit is completed after the utility model The installation adjusting methods such as reciprocating working inspection method are lifted, having does not increase cost additionally, simple and convenient, mounting and adjusting efficiency High, the advantages that effect is good；

7th, the application method of lifting gear provided by the utility model can be such that system cost effectively reduces, and system makes It can be fully guaranteed with service life and stability；Third hydraulic drive unit hydraulic cylinder provided by the utility model with The coaxial construction of the hydraulic cylinder of first hydraulic drive unit or the second hydraulic drive unit, during can substantially reducing adjustment Additional torsion caused by new inclination, and the inside for reducing lifting gear contradicts, and improves the stability of lifting gear and makes Use the service life；

8th, pull-up leveling lifting gear provided by the utility model can often stop at high height platform in lifting frame Optimum performance and state are kept in the case of face, also can ensure bottom leveling in bottommost inconvenience leveling occasion in lifting frame, it can To meet the specific demand of these special occasions.

The advantages of more than advantageous effect and other aspects, will be more clearly understood from by detailed description below in conjunction with the accompanying drawings, Attached drawing describes the principle of the utility model by way of example.

Description of the drawings

Described embodiment by by description below in conjunction with the accompanying drawings and it can be readily appreciated that reference label similar in attached drawing It represents similar structural detail, is illustrating for each attached drawing below.

Fig. 1 is the general illustration according to described embodiment.

Fig. 2 is the general illustration according to basic framework in described embodiment.

Fig. 3 is the diagrammatic side view according to basic framework in described embodiment.

Fig. 4 is the general illustration according to lifting frame in described embodiment.

Fig. 5 is the general illustration according to the first hydraulic drive unit in described embodiment.

Fig. 6 is the general illustration according to the second hydraulic drive unit in described embodiment.

Fig. 7 is the general illustration according to third hydraulic drive unit in described embodiment.

Specific embodiment

In following specific descriptions, a large amount of details are set forth former for the basis of described embodiment to provide The thorough understanding of reason.It will be apparent to a person skilled in the art that these are specific thin for described embodiment Section it is some or all of in the case of can also implement.During the description of embodiment, it is known that processing step not by It specifically describes, to avoid ultimata is unnecessarily obscured.

The embodiment of the utility model is described in detail below by way of attached drawing.However, it should be appreciated by those skilled in the art that The specific descriptions provided herein with reference to these attached drawings are exemplary purposes, and the utility model exceeds these limited embodiments.

As shown in Figure 1, the lifting gear of one embodiment of the utility model includes basic framework 100, lifting frame 200 With 300 three parts of driving device.

The basic framework 100 is mainly that the elevating movement of the lifting frame 200 provides basic guiding, support, consolidates The functions such as fixed and protection.

As shown in Figures 2 and 3, the basic framework 100 mainly includes rack 110, several guide rails 120, initial Table top 130, target mesa 140 etc..

The rack 110 includes rack matrix 111, shielded frame 112 etc..

What a kind of rack matrix 111 for consideration can be formed by including vertical column 111A, crossbeam 111B etc. Mechanical structure, which must satisfy that intensity requirement needed for lifting gear, antirust requirement, corrosion-resistant requirement etc. are various will It asks, is mainly used for undertaking the various possible external force effects that lifting gear is subject to, while provide for lifting gear firm, reliable Braced frame.

Preferably, the rack 110 is fixed on ground.

The shielded frame 112 is fixedly connected with the rack matrix 111.

Preferably, on the one hand the shielded frame 112 can increase rack close to the target mesa for having certain altitude On the one hand the intensity of basal body structure can be related personnel or object when lifting frame is close to the target mesa for having certain altitude Product provide the protection in outside.

When there is multiple target mesas 140 with certain altitude, preferably, the rack 110 needs to set and mesh Mark multiple shielded frames 112 of 140 identical quantity of table top.

Guide rail 120 generally setting main orbit 121, main orbit 121 can include left side main orbit group 121A and right side Main orbit group 121B.

Left side main orbit group 121A can include two symmetrically arranged main orbit 121A1 and main orbit 121A2.

Right side main orbit group 121B can include two symmetrically arranged main orbit 121B1 and main orbit 121B2.

Preferably, main orbit 121A1, main orbit 121A2, main orbit 121B1 and main orbit 121B2 size and material It is identical, all sames such as the protection of use and anti-corrosive technology, installation and fixing means.

The number of tracks of main orbit 121 can suitably be adjusted according to actual demand, such as 4,6 or 8 etc., so as to The size of lifting gear and performance is continuously improved.

When the driving device 300 is using the chain sling formula driving structure for being similar to common hand operated transport, alternatively, working as 200 mesa dimensions of lifting frame are larger to be needed to further improve stability in lifting process, increases by 200 rigidity of lifting frame When, preferably, guide rail 120 also needs to set secondary track 122.

Similar, secondary track 122 can include left side pair track groups 122A and right side pair track groups 122B.

Left side pair track groups 122A can include two symmetrically arranged pair track 122A1 and secondary track 122A2.

Right side pair track groups 122B can include two symmetrically arranged pair track 122B1 and secondary track 122B2.

Preferably, secondary track 122A1, secondary track 122A2, pair track 122B1 and pair track 122B2 size and material It is identical, all sames such as the protection of use and anti-corrosive technology, installation and fixing means.

The number of tracks of secondary track 122 can also suitably be adjusted according to actual demand, such as 4,6 or 8 etc., so as to The size and performance of lifting gear can be continuously improved.

To simplify the structure of basic framework 100, the cost of basic framework 100 is reduced, preferably, can be by vertical column 111A is designed as main orbit 121 or main orbit 122, i.e., described main orbit 121 or main orbit 122 and vertical column 111A are same Component.Two functions of a part, i.e. the support construction function of main orbit function and rack matrix can be realized in this way.

In contrast the initial table top 130 and the target mesa 140 are.

When ground is initial table top 130, the table top with certain altitude is target mesa 140.

When the table top with certain altitude is initial table top 130, if rising, higher table top is target mesa 140, If declining, the table top of ground or more low clearance is target mesa 140.

, might as well be using ground as initial table top 130 for ease of narration, the lifting gear only includes a target mesa 140.

As shown in figure 4, the lifting frame 200 be mainly used for receive live load, it include lifting frame matrix 210, Guide wheel group 220, lifting frame protection network 230 etc..

The live load mostlys come from its own gravity of all parts for participating in lifting such as lifting frame 200, with And its own gravity of material that lifting frame 200 is carried.

The lifting frame matrix 210 can be a variety of different mechanical structures, and the mechanical structure meets lifting gear The various requirements such as required intensity requirement, antirust requirement, corrosion-resistant requirement.For example, the lifting frame matrix 210 can be by steel Section bar processed splices and forms a hollow structure, and the door that can be opened and closed is set in the side of close target mesa 140, with Just all kinds of protections etc. in cargo disengaging and lifting process.

The guide wheel group 220 include several main guide wheel groups 221, each main guide wheel group 221 respectively with main orbit 121 match, and are determined along guide rail 120 always ensureing lifting frame 200 in lifting process generally basic Vertically, essentially linear direction is lifted.

Each main guide wheel group 221 is fixed on lifting frame matrix 210.

When there is secondary track 122, guide wheel group 220 should also include several secondary guide wheel groups 222.

Each pair guide wheel group 222 matches respectively with secondary track 122, while each secondary guide wheel group 222 is fixed on liter It drops on frame matrix 210.

Preferably, U-type groove steel or I-shaped channel steel may be used in each main orbit 121, secondary track 122, it is each leading Common steel wheel cooperation ball bearing or roller bearing and corresponding may be used to wheel group 221 and secondary guide wheel group 222 Connector, supporting structure are realized, so as to further reduce the cost, improve system reliability and stability.

For ease of the transport and protection of small speck product, prevent the non-permitted article non-permitted article that flies out and prevent from flying into, Safety and the protective capacities of lifting gear are effectively improved, a variety of protection iron nets may be used in the lifting frame protection network 230 And it is fixedly connected on the lifting frame matrix 210.

The driving device 300 is mainly used for driving lifting frame 200 relative to 100 vertical lifting of basic framework, its packet Include hydraulic circuit components 310, hydraulic pressure cylinder assembly 320, manipulation unit 330 etc..

The manipulation unit 330 is mainly that operating personnel provide the man-machine of control lifting gear especially driving device 300 Interactive function.The manipulation unit 330 can be there are many form.

For example, button control form may be used in the manipulation unit 330, then the manipulation unit 330, which includes rising, presses Button, declines button, stop botton, power-off button and necessary all kinds of circuit units etc..

For example, handle control form may be used in the manipulation unit 330, then the manipulation unit 330 includes manipulator Handle and necessary all kinds of circuit units etc..

The operation handle can realize the functions such as up and down, shutdown, shutdown.

The circuit unit mainly includes all kinds of common electronics components needed for by the conversion of control action signal, transmission etc. And cable etc..

The hydraulic circuit components 310 include oil supply unit 311, hydraulic valve, oil pipe etc..

The oil supply unit 311 includes hydraulic oil container, hydraulic pump, oil filter etc..

Preferably, the oil supply unit 311 can also select the hydraulic station products substitution of globality.

The hydraulic valve includes overflow valve, throttle valve, reversal valve etc..

The oil pipe realizes hydraulic oil in the hydraulic circuit components for connecting the hydraulic valve and oil supply unit It flows and does not spill over the hydraulic circuit components.

For hydraulic oil is further prevented to overflow or is revealed, corresponding gasket should be also configured in the hydraulic circuit components 310 Circle.

The hydraulic pressure cylinder assembly 320 includes two sets of hydraulic drive units i.e. the first hydraulic drive unit 301 and the second hydraulic pressure Driving unit 302.

As shown in figure 5, first hydraulic drive unit 301 is mainly solid including first hydraulic cylinder 321, first hydraulic cylinder Determine portion's connection component 322 and first hydraulic cylinder moving portion connection component 323.

First hydraulic drive unit 301 is broadly divided into the first hydraulic-driven fixation kit 301A and the first hydraulic pressure drives Dynamic moving assembly 301B two large divisions.

The first hydraulic-driven fixation kit 301A is all relatively basic frames in the first hydraulic drive unit 301 100 parts remained stationary, pedestal 321-1, end cap 321-2, sealing element and first including first hydraulic cylinder 321 Hydraulic cylinder fixed part connection component 322 etc..

The first hydraulic cylinder fixed part connection component 322 connects according to first hydraulic cylinder 321 and the fixed of basic framework 100 Depending on connecing form.

For example, first hydraulic cylinder 321 is fixedly connected with basic framework 100 by transition connecting plate and four threaded connections, Then first hydraulic cylinder fixed part connection component 322 includes transition connecting plate, four bolts, four nuts, four gaskets and four Spring washer etc..

For another example, first hydraulic cylinder 321 is threadedly coupled by ground connecting plate and four and is directly fixedly connected with ground, into And be fixedly connected indirectly with basic framework 100, then first hydraulic cylinder fixed part connection component 322 include ground connecting plate, four Bolt, four nuts, four gaskets and four spring washers etc..

The first hydraulic-driven moving assembly 301B is all relatively basic frames in the first hydraulic drive unit 301 100 lifting movings, 200 fixed parts of OQ t frame, piston 321-3, piston including first hydraulic cylinder 321 Bar 321-4 and first hydraulic cylinder moving portion connection component 323 etc..

The first hydraulic cylinder moving portion connection component 323 connects according to first hydraulic cylinder 321 and the fixed of lifting frame 200 Depending on connecing form.

For example, first hydraulic cylinder 321 is fixedly connected with lifting frame 200 by transition connecting plate and four threaded connections, Then first hydraulic cylinder moving portion connection component 323 includes transition connecting plate, four bolts, four nuts, four gaskets and four Spring washer etc..

Preferably, it is identical with the first hydraulic drive unit, as shown in fig. 6, second hydraulic drive unit 302 is led To include second hydraulic cylinder 324, second hydraulic cylinder fixed part connection component 325 and second hydraulic cylinder moving portion connection component 326.

Second hydraulic drive unit 302 is broadly divided into the second hydraulic-driven fixation kit 302A and the second hydraulic pressure drives Dynamic moving assembly 302B two large divisions.

The second hydraulic-driven fixation kit 302A is all relatively basic frames in the second hydraulic drive unit 302 100 parts remained stationary, pedestal 324-1, end cap 324-2, sealing element and second including second hydraulic cylinder 324 Hydraulic cylinder fixed part connection component 325 etc..

The second hydraulic cylinder fixed part connection component 325 connects according to second hydraulic cylinder 324 and the fixed of basic framework 100 Depending on connecing form.

For example, second hydraulic cylinder 324 is fixedly connected with basic framework 100 by transition connecting plate and four threaded connections, Then second hydraulic cylinder fixed part connection component 325 includes transition connecting plate, four bolts, four nuts, four gaskets and four Spring washer etc..

For another example, second hydraulic cylinder 324 is threadedly coupled by ground connecting plate and four and is directly fixedly connected with ground, into And be fixedly connected indirectly with basic framework 100, then second hydraulic cylinder fixed part connection component 325 include ground connecting plate, four Bolt, four nuts, four gaskets and four spring washers etc..

The second hydraulic-driven moving assembly 302B is all relatively basic frames in the second hydraulic drive unit 302 100 lifting movings, 200 fixed parts of OQ t frame, piston 324-3, piston including second hydraulic cylinder 324 Bar 324-4 and second hydraulic cylinder moving portion connection component 326 etc..

The second hydraulic cylinder moving portion connection component 326 connects according to second hydraulic cylinder 324 and the fixed of lifting frame 200 Depending on connecing form.

For example, second hydraulic cylinder 324 is fixedly connected with lifting frame 200 by transition connecting plate and four threaded connections, Then second hydraulic cylinder moving portion connection component 326 includes transition connecting plate, four bolts, four nuts, four gaskets and four Spring washer etc..

The first hydraulic-driven fixation kit 301A, the second hydraulic-driven fixation kit 302A and basic framework 100 are solid Fixed connection, the basic framework 100 are fixedly connected with the ground, and the first hydraulic-driven moving assembly 301B, the second hydraulic pressure drive Dynamic moving assembly 302B is fixedly connected with lifting frame 200.

In addition, another installation fixed form can also be the first hydraulic-driven fixation kit 301A, the second hydraulic pressure Driving fixation kit 302A, basic framework 100 are fixedly connected with the ground.

Preferably, for make lifting frame 200 in lifting process preferably holding level without tilt, while simplify rise Design, structure and the manufacture of falling unit reduce cost, 301 and second hydraulic drive unit 302 of the first hydraulic drive unit It is symmetrical set, and the first hydraulic drive unit 301 and the second hydraulic drive unit 302 have identical performance, ginseng Number and size.

When implementing the lifting gear particularly for large lift height according to the method described above, 301 He of the first hydraulic drive unit Second hydraulic drive unit 302 is easily different because of small hydraulic oil leakage, foozle, hydraulic component loss etc. Step, and then lifting frame 200 is caused to tilt, particularly near target mesa 140.

When in use, above-mentioned tilt problem will lead to material disengaging lifting frame 200 there are difficulty to user, to using and give birth to Production is made troubles.

By using high-precision hydraulic valve, high consistency hydraulic cylinder the methods of can improve liter to a certain extent The inclined degree of frame 200 drops, but with the increase of number of use, 200 inclined degree of lifting frame easily runs down, and it is different Step problem is easily as hydraulic component is lost, the leakage of oil cylinder or oil pipe and the problems such as hydraulic circuit poor sealing are gradually serious.

It to those skilled in the art, can be with by improving hydraulic circuit or improving hydraulic circuit installation adjusting method Lifting frame 200 is allowed to reach the run-off the straight nearby of target mesa 140 only under propradation, and is returned under decline state initial The not run-off the straight nearby of table top 130, can also be such that lifting frame 200 is reached only under decline state and incline near target mesa Tiltedly, and under propradation not run-off the straight near initial table top 130 is returned to.Thus, the prior art can send out tilt problem Raw probability reduces by 50%, but still cannot thoroughly solve tilt problem.

Effectively to overcome above-mentioned deficiency, the utility model sets third liquid between lifting frame 200 and basic framework 100 Press driving unit 303.

As shown in fig. 7, the third hydraulic drive unit 303 mainly includes third hydraulic cylinder 327, third hydraulic cylinder is consolidated Determine portion's connection component 328 and third hydraulic cylinder moving portion connection component 329.

The third hydraulic drive unit 303 is broadly divided into third hydraulic-driven fixation kit 303A and third hydraulic pressure drives Dynamic moving assembly 303B two large divisions.

The third hydraulic-driven fixation kit 303A is all relatively basic frames in third hydraulic drive unit 303 100 parts remained stationary, pedestal 327-1, end cap 327-2, sealing element and third including third hydraulic cylinder 327 Hydraulic cylinder fixed part connection component 328 etc..

The third hydraulic cylinder fixed part connection component 328 connects according to third hydraulic cylinder 327 and the fixed of basic framework 100 Depending on connecing form.

For example, third hydraulic cylinder 327 is fixedly connected with basic framework 100 by transition connecting plate and four threaded connections, Then third hydraulic cylinder fixed part connection component 328 includes transition connecting plate, four bolts, four nuts, four gaskets and four Spring washer etc..

The third hydraulic-driven moving assembly 303B is all relatively basic frames in third hydraulic drive unit 303 100 lifting movings, 200 fixed parts of OQ t frame, piston 327-3, piston including third hydraulic cylinder 327 Bar 327-4 and third hydraulic cylinder moving portion connection component 329 etc..

The third hydraulic cylinder moving portion connection component 329 connects according to third hydraulic cylinder 327 and the fixed of lifting frame 200 Depending on connecing form.

For example, third hydraulic cylinder 327 is fixedly connected with lifting frame 200 by transition connecting plate and four threaded connections, Then third hydraulic cylinder moving portion connection component 329 includes transition connecting plate, four bolts, four nuts, four gaskets and four Spring washer etc..

High height table top occasion and lifting gear bottom are often stopped at when many reasons to meet lifting gear Inconvenient mounting and adjusting causes lifting frame 200 to be difficult to the special occasions needs such as leveling occasion in bottommost, different from the first liquid Press 301 and second hydraulic drive unit 302 of driving unit, the third hydraulic-driven fixation kit 303A and basic framework 100 Top be fixedly connected, the third hydraulic-driven moving assembly 303B is fixedly connected with lifting frame 200.

To simplify system, cost is reduced, preferably, the first hydraulic drive unit 301 and the second hydraulic drive unit 302 With identical performance and size, stroke and normal thrust and the first hydraulic-driven list of the third hydraulic drive unit Member or the second hydraulic drive unit are identical.

Correspondingly, after increasing third hydraulic drive unit 303, manipulation unit 330 should increase corresponding human-computer interaction function, The particularly human-computer interaction function of control third hydraulic drive unit 303.

Preferably, manipulation unit 330 can increase adjustment start button, adjustment two buttons of close button or increase Rise adjustment start button, decline adjustment start button, adjustment close button totally three buttons.

If manipulating unit 330 uses handle control form, preferably, operation handle can realize that adjustment starts, adjusts Whole closing function or realize rises adjustment and starts, declines adjustment and start, adjust and close totally three functions.

To make the force application location of third hydraulic drive unit 303 and the first hydraulic drive unit 301 or the second hydraulic-driven The force application location of unit 302 is identical, new inclination caused by so as to substantially reduce the additional torsion during adjustment, and reduces The inside of lifting gear contradicts, and the stability and service life of lifting gear is improved, preferably, the third hydraulic-driven list Member 303 hydraulic cylinder it is coaxial with the hydraulic cylinder of 301 or second hydraulic drive unit 302 of the first hydraulic drive unit or Collinearly.

Similar to the hydraulic cylinder of 301 or second hydraulic drive unit 302 of the first hydraulic drive unit, the third The hydraulic cylinder of hydraulic drive unit 303 in oil inlet should be able to lifting frame 200 provide with the first hydraulic drive unit 301 or The thrust of second hydraulic drive unit, 302 same direction so as to simplify hydraulic circuit, reduces hydraulic circuit cost, preferably, The hydraulic cylinder of the third hydraulic drive unit 303 is double-act-ing hydraulic J-Horner or the third hydraulic drive unit 303 Hydraulic cylinder be the fuel-displaced single-action hydrocylinder of rod chamber oil inlet.

Since tilt problem probability of happening can be reduced to 50% by the prior art, preferably, the utility model is examined first Consider reduces the frequency of usage of third hydraulic drive unit 303 as possible, and then enhances the convenience and simplicity of operation.In this way, this The third hydraulic drive unit 303 is set to 301 and second hydraulic-driven of the first hydraulic drive unit by utility model It is easier that pose relatively low side when hysteresis, that is, lifting frame 200 tilts occurs in unit 302.

For example, the relatively low side of pose is the one of 301 place of the first hydraulic drive unit when lifting frame 200 tilts The side might as well be set as left side by side, then third hydraulic drive unit 303 is set to 301 homonymy of the first hydraulic drive unit.This When, 303 and first hydraulic drive unit 301 of third hydraulic drive unit can be coaxially disposed.

To enhance lifting gear stability, simplify structure, reduce cost, and effectively improve lifting gear drive efficiency and drive Dynamic effect, preferably, 303 and first hydraulic drive unit 301 of third hydraulic drive unit arranged side by side is integrally located at liter The medium position in 200 left side of frame is dropped, the best position of third hydraulic drive unit 303 can be obtained under the position.

To be manipulated to third hydraulic drive unit 303, another independent manipulation unit 340 can be increased.

But it is cost-effective, reduces manipulation complexity, increase manipulation convenience and safety, preferably, the manipulation Unit 330 includes rising adjustment and starts function, declines adjustment beginning function and adjustment closing function, can be opened by rising adjustment Beginning function, decline adjustment start function and adjustment closing function manipulates third hydraulic drive unit 303.

Preferably, the adjustment beginning function that rises is implemented by rising adjustment start button, rise when pressing After adjusting start button, the first hydraulic drive unit 301 and the second hydraulic drive unit 302 are simultaneously stopped and act on and keep simultaneously Respective hydraulic cylinder in-cylinder pressure is constant and active force is constant, and third hydraulic drive unit 303 generates upward active force and pushes institute Lifting frame 200 is stated to rise.

Preferably, the adjustment beginning function that declines is implemented by decline adjustment start button, decline when pressing After adjusting start button, the first hydraulic drive unit 301 and the second hydraulic drive unit 302 are simultaneously stopped and act on and keep simultaneously Respective hydraulic cylinder in-cylinder pressure is constant and active force is constant, and third hydraulic drive unit 303 acts power and overcomes load weight Power and decline lifting frame 200.

Preferably, the adjustment closing function implements by adjusting close button, when pressing adjustment close button Afterwards, third hydraulic drive unit 303 fails and keeps in-cylinder pressure constant.

In actual use, site operation personnel has found that 200 inclined degree of lifting frame is larger and then influences material During disengaging operation, rising adjustment start button can be pressed or decline adjustment start button, then 301 He of the first hydraulic drive unit Second hydraulic drive unit 302 be simultaneously stopped act on and keep respective hydraulic cylinder in-cylinder pressure constant simultaneously and active force not Become, third hydraulic drive unit 303 starts that the lag of lifting frame 200 side is driven to continue slowly to move to target mesa.Work as liter After drop 200 inclined degree of frame meets the requirements, site operation personnel presses adjustment close button, then third hydraulic drive unit 303 fail and keep in-cylinder pressure constant, 200 remains stationary state of lifting frame and inclined degree meets the requirements.

When the lifting gear described to above-described embodiment carries out actual implementation, those skilled in the art can use a variety of Installation adjusting method, and the relevant technologies are more mature.It only describes to adjust with existing installation in technical solutions of the utility model below Adjusting technique has visibly different substantive content.

To improve mounting and adjusting efficiency and actual effect, simplify mounting and adjusting technique, mounting and adjusting cost is reduced, as excellent Choosing, for the utility model during the lifting gear described to above-described embodiment carries out installation and debugging, emphasis completes the base After 200 installation and debugging of this frame 100 and lifting frame, 301 and second hydraulic pressure of the first hydraulic drive unit is completed first The installation and debugging of driving unit 302 are installed in 301 and second hydraulic drive unit 302 of the first hydraulic drive unit and are adjusted After the completion of examination, then complete the installation and debugging of the third hydraulic drive unit 303.

301 and second hydraulic drive unit 302 of the first hydraulic drive unit is determined for accurate, quick, inexpensive In be easier that pose relatively low side when the hysteresis, that is, lifting frame 200 tilts occurs, carrying out described first It is reciprocal by lifting more than twice during the installation and debugging of 301 and second hydraulic drive unit 302 of hydraulic drive unit Operation is reviewed and validate and is easier to occur lag in 301 and second hydraulic drive unit 302 of the first hydraulic drive unit now As being pose relatively low side when the lifting frame 200 tilts.

The accuracy of the relatively low side of pose and efficiency when judging that lifting frame 200 tilts to further improve, as It is preferred that in lifting reciprocating working every time, quality (or weight) and lifting gear nominal load should be put into lifting frame 200 (or maximum allowable load) almost equal equivalent article.

Determine that installation personnel is according to third hydraulic-driven list when lifting frame 200 tilts behind the relatively low side of pose The best position of member 303 carries out the techniques such as drilling, tapping or welding accordingly, so as to complete third hydraulic drive unit 303 installation.

To further improve the stationarity and usage experience of lifting gear, lifting frame 200 is reduced to greatest extent and is tilted Probability, preferably, during the installation and debugging for carrying out the third hydraulic drive unit 303, the third hydraulic pressure drives The installation of moving cell 303 should meet following condition with adjustment：First hydraulic drive unit 301, the second hydraulic drive unit 302 and third hydraulic drive unit 303 be respectively mounted completion and the tightening of related fittings whole or locking after, the lifting frame 200 200 integral levels of lifting frame when being located at maximum height table position or a small amount of inclination for only allowing.The permission A small amount of allowed band for tilting the tilt quantity for being the generation of lifting frame 200,5/1000ths of total 200 adjustable height of lifting frame To between ten a ten thousandths.The tilt quantity refers to that the maximum position of 200 left and right sides of lifting frame in the vertical direction is inclined Difference.

Preferably, what is allowed is tilted in one thousandth between five one thousandths on a small quantity.For example, it is 4m in adjustable height When, the maximum inclination of permission can be 4mm, 3.8mm, 3.6mm, 3.5mm, 3.4mm, 3.2mm, 3mm, 2.8mm, 2.6mm, 2.5mm、2.4mm、2.2mm、2.1mm、2mm、1.8mm、1.6mm、1.5mm、1.4mm、1.2mm、1.0mm、0.9mm、0.8mm Deng.

To the lifting gear obtained by above-mentioned mounting and adjusting, operating personnel make first liquid by manipulating unit 330 301 and second hydraulic drive unit 302 of pressure driving unit act simultaneously power drive lifting frame 200 rise and close to target Table top 140, at this time the third hydraulic drive unit 303 do not work and do not generate driving force.

When lifting frame 200 is close to target mesa 140, if a small amount of inclination that the lifting frame 200 only allows, Operating personnel are simultaneously stopped 301 and second hydraulic drive unit 302 of the first hydraulic drive unit by manipulating unit 330 Rise and lifting frame 200 is made to be maintained near target mesa 140.

If the tilt quantity that the lifting frame 200 occurs is more than allowed band, operating personnel are by manipulating unit 330 Rising adjustment start button makes 301 and second hydraulic drive unit 302 of the first hydraulic drive unit be simultaneously stopped effect simultaneously Keep that respective hydraulic cylinder in-cylinder pressure is constant and active force is constant, while produces the third hydraulic drive unit 303 simultaneously Raw upward active force pushes the lifting frame 200 to continue up.

When the inclination that the lifting frame 200 occurs is not above allowed band, operating personnel are by manipulating unit 330 Adjustment close button the third hydraulic drive unit 303 is made to fail and keeps the liquid of third hydraulic drive unit 303 Cylinder pressure in-cylinder pressure is constant and active force is constant, and makes 200 remains stationary state of lifting frame and inclined degree meets the requirements.

When the lifting frame 200 needs to drop near initial table top 130, operating personnel are by manipulating unit 330 Adjustment close button makes the third hydraulic drive unit 303 not work and does not generate driving force, then make by manipulating unit 330 First hydraulic drive unit, 301 and second hydraulic drive unit 302 generates certain effect power and load gravity is overcome to make simultaneously Lifting frame 200 declines and close to the i.e. initial table top 130 of target mesa.During decline, preferably, the first hydraulic-driven 301 and second hydraulic drive unit 302 of unit can make hydraulic oil in respective hydraulic cylinder be back to hydraulic oil through corresponding reversal valve Case.

If a small amount of inclination that the lifting frame 200 only allows, operating personnel by manipulate unit 330 make it is described First hydraulic drive unit 301 and the second hydraulic drive unit 302, which are simultaneously stopped, to be declined and lifting frame 200 is made to be maintained at initial Near table top 130.

If the tilt quantity that the lifting frame 200 occurs is more than allowed band, operating personnel are by manipulating unit 330 Declining adjustment start button makes 301 and second hydraulic drive unit 302 of the first hydraulic drive unit be simultaneously stopped effect simultaneously Keep that respective hydraulic cylinder in-cylinder pressure is constant and active force is constant, while produces the third hydraulic drive unit 303 simultaneously Raw active force overcomes load gravity and lifting frame 200 is made to continue to move downward.

When the inclination that the lifting frame 200 occurs is not above allowed band, operating personnel are by manipulating unit 330 Adjustment close button the third hydraulic drive unit 303 is made to fail and keeps the liquid of third hydraulic drive unit 303 Cylinder pressure in-cylinder pressure is constant and active force is constant, and makes 200 remains stationary state of lifting frame and inclined degree meets the requirements.

The conventional methods such as improvement hydraulic circuit or high-precision hydraulic circuit different from the prior art realize lifting frame 200 Real-time synchronization technique that is synchronous and making 200 not run-off the straight of lifting frame is remained in lifting process, the utility model Technical thought is, ignore the asynchronous problem of hydraulic cylinder in 200 lifting process of lifting frame using end simultaneous techniques and Only ensure that lifting frame 200 is reached home the end synchronous regime of neighbouring position.

The technical thought that this end synchronizes is very useful in practical operation, is carried to solve the problems, such as that lifting gear is asynchronous A kind of completely new technical thought is supplied.

On the one hand, the lifting gear of large lift height is in lifting process, and with being continuously increased for adjustable height, hydraulic pressure returns Any small leakage, foozle, component loss etc. are all easy to cause the continuous amplification of the asynchronous problem of hydraulic cylinder in road, It according to real-time synchronization thinking, then is easy to greatly increase cost, reduces system service life and stability, and use end The synchronous thinking in end, then can ignore the asynchronous problem in lifting process, system cost can be reduced effectively, system service life It can be fully guaranteed with stability.

On the one hand, user of service often only focuses on whether end synchronizes in operation and control lifting gear, because of this relationship It can facilitate disengaging lifting frame 200 to material, and be not concerned with that a small amount of inclination or asynchronous whether occurs in lifting process, because For a small amount of inclination or it is asynchronous will not generate any influence, also tend to not noticeable, it is clear that real-time synchronization technique has ignored this True use demand in one actual mechanical process, and end simultaneous techniques meets this true use demand well, because And the utility model the technical issues of solving the problems, such as substantially is that end is asynchronous, and the prior art based on real-time synchronization technique The technical issues of solving the problems, such as substantially is whole asynchronous.

Moreover, in some occasions, as lifting gear often stop at high height table top or lifting gear bottom because Many reasons and inconvenient mounting and adjusting causes lifting frame 200 to be difficult to the occasions such as leveling in bottommost, be easy to cause the bottom of based on The adjustment of reduction 200 tilt quantity of lifting frame from bottom to top in portion there are inconvenience or even can not be implemented.And this practicality is new The lifting gear that type provides is fixedly connected by the third hydraulic-driven fixation kit 303A with 100 top of basic framework Pull-up leveling structure, be very suitable for these occasions, optimum performance can be kept in the case that often stopping at high height table top And state, also it can ensure bottom leveling in bottom inconvenience leveling occasion.

Particularly, hydraulic cylinder and first hydraulic pressure of the utility model by the third hydraulic drive unit 303 The hydraulic cylinder of 301 or second hydraulic drive unit 302 of driving unit is coaxial or collinear structure, can make third hydraulic-driven list The force application location of member 303 is identical with the force application location of the first hydraulic drive unit 301 or the second hydraulic drive unit 302, thus New inclination caused by the additional torsion during adjustment can be substantially reduced, and the inside for reducing lifting gear contradicts, and carries The stability and service life of high lifting gear.

In addition, to the lifting gear of no third hydraulic drive unit 303, when the second hydraulic drive unit 302 and/or When one hydraulic drive unit 301 cannot act power suddenly due to hydraulic circuit fault, it is unexpected to be easy to cause lifting frame 200 It falls or excessively tilts.And the utility model is because with third hydraulic drive unit 303, the second hydraulic drive unit 302 and/ Or first hydraulic drive unit 301 when cannot act power suddenly due to hydraulic circuit fault, it can continue to keep active force, So as to prevent lifting gear 200 from falling suddenly or it is excessive tilt, can further improve lifting gear safety and can By property.

In addition, the utility model drives because of the first hydraulic drive unit 301, the second hydraulic drive unit 302 and third hydraulic pressure Moving cell 303 has identical performance and size, thus even if one of other two hydraulic cylinders break down, this reality The hydraulic cylinder to break down can be replaced with the hydraulic cylinder of third hydraulic drive unit 303 with novel lifting device, so as to protect Card the utility model lifting gear works on.

The technical solution of the utility model is described in detail in embodiment described above, it should be understood that above institute Only specific embodiment of the utility model is stated, is not intended to limit the utility model, all spirits in the utility model Interior done any modification, supplement or similar fashion replacement etc., should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of lifting gear, which is characterized in that including basic framework, for the lifting frame of receiving live load and for making Lifting frame relative to basic framework vertical lifting driving device；The driving device includes manipulation unit and left and right pair Claim two sets of hydraulic drive units i.e. the first hydraulic drive unit and the second hydraulic drive unit of setting；In the lifting frame and Third hydraulic drive unit is set between basic framework；The third hydraulic drive unit includes third hydraulic-driven fixation kit With third hydraulic-driven moving assembly, it is fixedly connected at the top of the third hydraulic-driven fixation kit and the basic framework, institute Third hydraulic-driven moving assembly is stated to be fixedly connected with the lifting frame.

2. lifting gear according to claim 1, which is characterized in that the hydraulic cylinder of the third hydraulic drive unit with The hydraulic cylinder of first hydraulic drive unit or the second hydraulic drive unit is coaxial or conllinear.

3. lifting gear according to claim 1, which is characterized in that first hydraulic drive unit and the second hydraulic pressure drive Moving cell has identical performance and size, stroke and normal thrust and first hydraulic pressure of the third hydraulic drive unit Driving unit or the second hydraulic drive unit are identical.

4. lifting gear according to claim 1, which is characterized in that the hydraulic cylinder of the third hydraulic drive unit is Double-act-ing hydraulic J-Horner or the hydraulic cylinder of the third hydraulic drive unit are the fuel-displaced single-acting hydraulic of rod chamber oil inlet Oil cylinder.

5. lifting gear according to claim 1, which is characterized in that the third hydraulic drive unit is located at described first It is easier that pose phase when hysteresis, that is, lifting frame tilts occurs in hydraulic drive unit and the second hydraulic drive unit To relatively low side.

6. lifting gear according to claim 1, which is characterized in that the lifting frame includes lifting frame matrix and leads To wheel group；The lifting frame matrix is spliced by steel sectional material and forms a hollow structure, and be provided with the door that can be opened and closed Structure；The basic framework includes vertical column, main orbit, crossbeam etc.；The main orbit is same component with vertical column.

7. lifting gear according to claim 6, which is characterized in that the guide wheel group includes several main directive wheels Group, each main directive wheel group match respectively with each main orbit, and the lifting frame is made to begin in lifting process It is lifted eventually along generally generally vertical, the essentially linear direction that the main orbit determines.

8. lifting gear according to claim 6, which is characterized in that the main orbit uses U-type groove steel or I-groove Steel is made.

9. lifting gear according to claim 7, which is characterized in that the main guide wheel group is with common steel wheel Ball bearing or roller bearing and corresponding connector, supporting structure are made.

10. lifting gear according to claim 1, which is characterized in that the manipulation unit includes rising button, declines and press Button, stop botton, power-off button etc..