CN201002930Y

CN201002930Y - Electric caterpillar crane

Info

Publication number: CN201002930Y
Application number: CNU2006201673480U
Authority: CN
Inventors: 石午江
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-12-08
Filing date: 2006-12-08
Publication date: 2008-01-09
Anticipated expiration: 2016-12-08

Abstract

The utility model provides an electric caterpillar crane which adopts an electromotor as e power to drive the caterpillar running and the crane working. The utility model discomposes and simplifies the prior special integrated structure which consists of a gas engine and a complex high pressure hydraulic system into a functional system which is assembled by cheap standard units independently under the driving of the electromotor. That is, the electric caterpillar running system, the electric hoisting windlass and the electric derrick windlass are arranged on a hoisting platform in a box-shaped beam structure to form a complete machine, thereby greatly reducing the manufacturing difficulty and the production cost of the caterpillar crane and making small factories also realize assembling production. The proposal that the hoisting platform assembles each functional system makes the caterpillar crane not be limited to the size, so that the large machine can reach hundred tons, while the small machine can be provided with a towing pulley so as to realize haulage and transition. The utility model can be modified into a pile driver once an upright pole and a lever rod are additionally arranged. The utility model has the advantages of no oil burning, no dark smoke and no waste gas, no high decibel noise of the gas engine, simple structure, easy for producing, low production cost, and the utility model relates to an environmental protecting type engineering machine.

Description

Electric cater-pillar crane

Technical field

The utility model relates to a kind of construction machinery and equipment, be specifically a kind of be the electric cater-pillar crane of power driven crawler travel and hoisting operation with the electrical motor.

Background technology

Various is the epoch that the construction machinery and equipment of power at home and abroad rises with the combustion engine, very cheap on the occasion of fuel price.To today; the rise of the oil price source of goods is in short supply; also strict day by day according to environmental protection requirement to the restriction that waste gas noise pollutes; therefore we be necessary the construction machinery and equipment not really high to some maneuvering performance requirements, that scope of work is concentrated relatively as: crawler type pile driver, crawler crane or the like are transformed; it is used as power by combustion engine drives crawler travel, operation; be transformed into electrical motor and be used as power, thus make limited fuel oil only be used in must usefulness the place.The manufacturing cost that this transformation not only can reduce this class machinery significantly has considerable economic; And the noise when over-emitting black exhaust waste discharge gas has not reduced work helps environmental protection, also has a very important social benefit.

For the transformation of crawler type pile driver, we have done a few thing.Facts have proved it is successful: since electric caterpillar band pile frame (ZL97233755.5) appearance that China develops voluntarily, because its price cheap (manufacturing cost only be with the ICE-powered crawler pile frame about 1/3), the domestic factory that still produces the ICE-powered crawler pile frame that can not find between a few years.And the crawler pile frame of once a large amount of imports initiatively reduces after 50% the foreign trader, and still not seeing has the user to order goods.According to the numeral of announcing in the annual meeting of piling machinery industry, present national electric caterpillar band pile frame annual turnover is above 200.As seen this transformation accords with the demands of the market.But the scheme of ZL97233755.5 also should not be indiscriminately imitated herein, also should improve targetedly when being used for crawler crane.

We study the improvement of hoisting crane more now.Existing self-portable hoisting crane, be crawler type or wheel crane all be with combustion engine as power, internal combustion engine drive wheel walking or drive crawler travel and drive the winch operation by complicated high-pressure hydraulic.Adopting the ICE-powered great advantage is that manoevreability is good.Wheel crane can promptly leave for the work of second ground by first ground voluntarily, therefore is commonly called as its " wheel crane " by name.Yet so good maneuverability but is not indispensability for crawler crane: traffic management system does not allow it to open highway yet so far.A little place the when domain of walk of crawler crane is only limited to its hoisting operation.When it walks operation in this limited scope, if the fuselage back in tow a supply cable can not produce much influences to its work.We just have ready conditions and also also it are done the transformation that replaces combustion engine with electrical motor as transforming crawler pile frame like this.This transformation also will reduce its manufacturing cost greatly.

Summary of the invention

The technical problems to be solved in the utility model is: adopt electrical motor to replace combustion engine, design a kind of simple and compact for structurely, easily assembling is produced, not waste discharge gas is not sent out the crawler crane high-decibel noise, direct motor drive crawler travel and hoisting operation during with low cost, work.

The scheme that the utility model solves the problems of the technologies described above is: design a kind of electric cater-pillar crane that adopts direct motor drive crawler travel and winch hoisting operation, it is provided with endless track installation, pivoting support and supporting base thereof, winch, Hydraulic Station, counterweight, crane arm and control cabin, it is characterized in that: everythings such as crawler travel, winch lifting and crane arm luffing all are power with the electrical motor, promptly adopt motor direct-drive or earlier through the hydraulic efficiency pressure system of direct motor drive Hydraulic Station again by fluid motor-driven.All devices such as endless track installation, winch and Hydraulic Station all become complete machine by the lifting platform assembling of a box girder structure: the electric caterpillar band running gear is installed in by pivoting support and supporting base thereof below the lifting platform, mounted thereto of electric winch and Hydraulic Station, control cabin, crane arm and counterweight are installed in its rear and front end respectively.Lifting platform is made of two longerons and some crossbeams.

The utility model electric cater-pillar crane that adopts technique scheme to design, the one-piece construction decomposition of the special use of being made up of combustion engine and complicated high-pressure hydraulic of existing crawler crane is simplified to several functional systems that are assembled into by the gauge member of cheapness, that is: electric caterpillar band running gear, electric winch tackling system and electric winch changing-breadth system etc. are installed to these several systems on the lifting platform of one box girder structure then.These several functional systems assemble by gauge member, all have ready-made standardized component to sell, and the stack up price is well below the all-in-one-piece specialized equipment of being made up of the internal combustion engine high pressure hydraulic efficiency pressure system.Simultaneously, manufacture difficulty and productive costs all reduce widely.Even a semiworks that has only several electric welders and assembler also can be assembled and produces this electric cater-pillar crane.

The utility model adopts a lifting platform to assemble each independently mode of functional system, makes the specification size of the utility model product not be subjected to the restriction of originating firm scale.The production large scale computer also can be assembled by little factory.Large scale computer can be made hundreds of tonnes; Minicomputer can be installed below lifting platform and tow wheel, tow when shifting the work-yard transport very convenient.A horizontal support just can repack suspension type crawler belt pile driver into as long as the utility model adds a root post, removes the column horizontal support and reverts to hoisting crane again.We know for mechanical device, simple more being not easy more of structure is out of order, and the utility model is decomposed into the separately-driven autonomous system of several electrical motors with a combustion engine as the integral structure in total output source, and it is very simple that structure becomes, be not easy to be out of order very much, maintenance easily is out of order also.

Description of drawings

We show structure of the present utility model and principle of work by accompanying drawing.

Fig. 1 is the utility model integral structure scheme drawing.

Fig. 2 is an electric caterpillar band driving device structure scheme drawing of the present utility model.

Fig. 3 is the lifting platform of the utility model box girder structure.Be clear its box girder structure of performance, except that counterweight, all parts of installing on the lifting platform are all removed.

Among the figure:

1. crane arm, 2. hoist rope, 3. amplitude limit safety wirerope, 4. luffing stay cord (totally two, about each),

5. luffing running block, 6. control cabin, 7. electric power distribution cabinet, 8. electric hydaulic station, 9. electric hoisting winch, 10. electronic luffing winch, 11. lifting platform, 12. the counterweight telescopic girder, 13. balance weight body, 14. electric caterpillar band running gears, 15. (it is general part that supporting base does not have special construction for pivoting support and supporting base, though also need not draw separately so locate to be blocked), 16. load hooks, 17. driving speed reducer supplemental support, 18. drive wheel, 19. the driving speed reducer support, 20. track rail assemblys, 21. walking retarders, 22. brake type bridge motor, 23. crossbeam, 24. oil cylinders, 25. longerons

The specific embodiment

We engage accompanying drawing and explain.Crane arm installation among Fig. 1 (it is identical so there is no need to go into details that the crawler belt crane arm is installed and had now to crane arm of the present utility model).Among Fig. 1, lifting platform 11 front ends are installed crane arm 1, and crane arm 1 is adjusted the crane arm elevation angle by the luffing stay cord 4 and the luffing running block 5 of end fixed thereon by electronic luffing winch 10, reaches the purpose of luffing.The effect of amplitude limit safety wirerope 3 is to prevent that luffing is excessive.The running block that the hoist rope 2 of electric hoisting winch 9 is walked around crane arm 1 top and assembly pulley and suspension hook 16 links, and is used for lifting operation.Above-mentioned two

electric winchs

9 and 10 and control cabin 6, electric power distribution cabinet 7 and Hydraulic Station 8 all be installed in above the lifting platform 11.Balance weight body 13 is installed in lifting platform 11 rear ends.

Counterweight among Fig. 1 is a kind of telescopic counterweight.This counterweight utilizes the elongation (elongation of telescopic girder 12 among the figure) of the arm of force to make the weight of balance weight body 13 be able to corresponding minimizing, thereby makes complete machine weight saving, and cost of transportation is also reduced.Should illustrate that the flexible function of this counterweight is not that the utility model must possess.Balance weight body 13 is fixed on the lifting platform rear end, Hydraulic Station 8 and flexible oil cylinder 24 (see figure 3)s of control are not installed, the utility model work is unaffected.The flexible scheme of this counterweight as just the user in the operation place the too frequent option that reduces freight charges when mobile.For minicomputer, flexible also can manually the finishing with latch of balance weight body fixed.When selecting the fixed weight scheme for use, can pour into concrete in the lifting platform box girder to strengthen complete machine stability.

Lifting platform 11 among Fig. 1 is installed electric caterpillar band running gear 14 below by pivoting support (and supporting base) 15.Crawler travel drives complete machine and moves.The actuating device of endless track installation is seen shown in Figure 2.Brake type bridge motor (or coiling electric motor) 22 is directly installed on the walking retarder 21, drives drive wheel 18 motions by walking retarder 21 and drives track rail assembly 20 walkings.This technical scheme is very similar to the scheme of ZL97233755.5 obviously, but two place's differences are arranged:

The first has been cancelled change speed gear box, directly motor is installed on the driving speed reducer.The scheme of ZL97233755.5 adopts, and change speed gear box is adjustable for the pile frame speed of travel of the differing heights that adapts to different size, and in the moment that its center of gravity is the highest, stability is the poorest just during the pile frame walking, the higher large-scale pile frame of column must reduce its speed of travel.Hoisting crane does not then have this necessity.Compact conformation is more not fragile.

It two is bridge motor or coiling electric motors that motor adopts brake equipment.This improvement (or claim " qualifications ") has strengthened safety, power failure suddenly when having prevented that equipment descending that past attempts took place from entering foundation ditch and make the sloping accident of equipment slide out of control.Just in case this thing happens, the braking motor of normally closed prevents self-actuating brake out of control.According to the principle that people-oriented, this improvement is very necessary.

A vitals of the present utility model is a lifting platform.Fig. 3 is the most a kind of box girder structure lifting platform of normal employing.There are two longerons 25 and three crossbeams 23 to constitute.Minimum two of longeron, crossbeam is no less than three, and four sometimes, its quantity is decided according to the structure needs.Two of balance weight body 13 telescopic girdeies 12 insert in two longerons 25 of lifting platform 11 just among Fig. 3, change depth of penetration by oil cylinder 24 and adjust the position of balance weight body 13 at the lifting platform rear.The power of oil cylinder 24 is from electric hydaulic station 8.By stating content as can be known: the purpose of extendable weight is to alleviate counterweight to save on transport costs, and at this moment the electric hydaulic station is so long as the just enough meet requirementses in the low-pressure hydraulic station of small-sized employing gear type pump.

We should specially be pointed out that to make referrals to this: the power of motor that can strengthen the electric hydaulic station strengthens the pressure and the flow of Hydraulic Station simultaneously, and its pressure flow is increased to is enough to adopt HM Hydraulic Motor to replace the degree of drive motor everywhere such as winch and endless track installation.This is an another kind of type of the present utility model, as propulsion source with the lifting platform of a box girder structure the independently feature of functional system is not installed separately with motor because only have in the material alterations technical solutions of the utility model with HM Hydraulic Motor replacement motor.Just because of the lifting platform of this box girder structure, make it no matter is to adopt the electrical motor direct drive or converting electric energy to hydraulic pressure earlier by the electric hydaulic station can adopt fluid motor-driven again, the complete machine of these two kinds of types does not almost have difference in appearance, and just the electric hydaulic station is big or small different.Recognize that they are that also must to arrive what see installation on the starting point of each system driving device be electrical motor or HM Hydraulic Motor to which kind of type.Adopt fluid motor-driven because many primary energies are changed, it is big that the gross horsepower of required motor is wanted, and the manufacturing cost of complete machine also exceeds a lot.But still well below the manufacturing cost that has crawler crane now.

In sum, the utility model is simple in structure, easy to manufacture, productive costs is low, but it possesses the working ability of existing crawler crane fully.It is the oil firing high-decibel of not waste discharge gas when the not having internal combustion engine noise that thunders of not smoldering not, is a kind of environment-friendly type construction machinery and equipment.

Claims

1, a kind of electric cater-pillar crane that adopts direct motor drive crawler travel and winch hoisting operation, be provided with endless track installation, winch, Hydraulic Station, pivoting support and supporting base thereof, counterweight, crane arm and control cabin, it is characterized in that: crawler travel, the everything of winch lifting and crane arm luffing all is power with the electrical motor, promptly adopt the electrical motor direct drive or pass through direct motor drive Hydraulic Station hydraulic efficiency pressure system earlier again by fluid motor-driven, endless track installation, winch and Hydraulic Station all are installed on the lifting platform of a box girder structure, lifting platform is made of two longerons and some crossbeams, it installs the electric caterpillar band running gear below by pivoting support and supporting base thereof, the electric hoisting winch is installed above, electronic luffing winch, electric hydaulic station and control cabin, front end is installed the crane arm rear end counterweight is installed.

2, electric cater-pillar crane as claimed in claim 1, it is characterized in that: the drive motor of said electric caterpillar band running gear is brake type bridge motor or coiling electric motor and is directly installed on the walking retarder, drives the drive wheel motion by the walking retarder and drive crawler travel.