CN103625440B - Engineering machinery - Google Patents
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- CN103625440B CN103625440B CN201310669271.1A CN201310669271A CN103625440B CN 103625440 B CN103625440 B CN 103625440B CN 201310669271 A CN201310669271 A CN 201310669271A CN 103625440 B CN103625440 B CN 103625440B
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Abstract
The invention discloses engineering machinery, which comprises a body, wherein a ground carrying inspection device is arranged on the body and is used for exerting a preset load on the ground before the operation of the engineering machinery. Compared with the existing engineering machinery, the engineering machinery provided by the invention has the advantages that the ground carrying inspection device is arranged on the body, the ground carrying identification capability is realized, the preset load is firstly exerted on the ground before the operation of the engineering machinery, the carrying capability of the ground is judged, the engineering machinery adapts to the homogeneous and heterogeneous ground inspection requirements, the problem of judging unreliability through visual inspection or experience by operators can be fundamentally solved, the occurrence of tip-over accidents is effectively avoided, and the construction safety is ensured.
Description
Technical field
The present invention relates to technical field of engineering machinery, in particular to a kind of engineering machinery with anti-tipping function.
Background technology
Engineering machinery generally carries the vital tasks such as transport or operation, and working environment changes greatly, and is travelling or is making
During industry, often because operator is not accurate enough to the cognition of environment, lead to engineering machinery that different degrees of thing of tumbling occurs
Therefore.Particularly to some heavy duty work equipment, such as concrete mixer or this engineering machinery with support system of crane,
When equipment is just started working, equipment is propped up by support system, and originally, initial equipment gravity may be just born on ground, but works as
After the upper dress part of equipment starts action, such as rotate after arm support or crane arm load, the stressing conditions of each supporting leg will occur pole
Big change, the pressure-bearing of certain supporting leg may increase to the several times of initial pressure-bearing, if now maximal work cannot be born in ground
Pressure, will occur ground to subside suddenly situation, leads to overthrow accident to occur.
At present, it is essentially all in equipment running process for the anti-tipping of engineering machinery, by detecting support oil cylinder
Oil pressure change or stress change, or judge whether ground there occurs by the angle of inclination of horizon detector testing equipment and collapse
Fall into.Because now equipment is currently running, such as arm support has stretched out or crane arm carries, when surface collapse situation is more slow,
Such method has certain effect.If but there is situation about subsiding suddenly, and equipment is likely to react in time, even if reaction,
Result is likely to retrieve.Because preceding method lacks the correct judgement to the true bearing capacity in ground before operation, therefore,
The generation of overthrow accident cannot be fundamentally effectively prevented from.
Because current engineering machinery lacks the verifying attachment of ground loading ability, in actual shipment or work progress,
Judgement to ground bearing capacity tends to rely on the experience of manipulator, such as before equipment works, by manipulator, ground is entered
Row range estimation, estimates its bearing capacity, face bearing capacity has more strict requirements over the ground due to this kind equipment, and different geology
Environment (as rural highway, river side, bridge, mountain region or the ground do not laid etc.), ground loading ability varies again, operation
The extremely difficult accurate judgement ground loading situation of handss, if there is fluke mind, carrying out exploratory operation, easily leading to overthrow accident to be sent out
Raw.In a word, current engineering machinery yet suffers from following problem：
1) estimation load supporting ability of ground can only be estimated by operator at present, the method is unreliable；
2) in the course of the work, the stressing conditions of supporting leg will change equipment, if ground loading ability cannot be born greatly
Operating pressure, it will lead to subsiding suddenly of ground；
3) current anti-tipping function has certain effect to slowly subsiding of ground, but subsiding suddenly no to ground
Method is tackled in time, therefore cannot be prevented effectively from the generation of accident.
Therefore, how to allow engineering machinery possess the identification ability to working environment in itself, fundamentally avoid overthrow accident
Generation, be still those skilled in the art's technical issues that need to address.
Content of the invention
In view of this, the invention provides a kind of engineering machinery, this engineering machinery possesses ground loading identification ability, effectively
Solve the problems, such as in prior art to estimate ground loading ability by the range estimation of manipulator, improve equipment availability can
By property.
A kind of engineering machinery that the present invention provides, including body, described body is provided with ground loading verifying attachment, institute
State ground loading verifying attachment for applying predetermined load to ground before described engineer machinery operation, described predetermined load is more than
The load earthward applying under limiting condition equal to described engineering machinery.
Preferably, also include the dynamical system that is arranged on body, described ground loading verifying attachment includes mechanical type and swashs
Shake device, described dynamical system and described mechanical type vibrator drive connection, predetermined for driving described mechanical type vibrator to produce
Load.
Preferably, also include the dynamical system that is arranged on body, described ground loading verifying attachment includes impacting cylinder, institute
The impulsion cylinder stating impact cylinder extends downwardly from, and described dynamical system is connected and can drive described impact piston with described impact cylinder
Bar moves downward to produce predetermined load.
Preferably, also include energy storage device, described impulsion cylinder compresses described energy storage device when moving upwards.
Preferably, the upside of piston of described impact cylinder is provided with power-assisted push rod, described energy storage device include energy storage cylinder and
It is placed in the air bag in described energy storage cylinder or spring, described power-assisted push rod passes through the cylinder barrel of described impact cylinder and acts against described air bag
Or one end of spring；Or described energy storage device is air chamber, described power-assisted push rod stretches into described air chamber.
Preferably, described energy storage device compression spring, described compression spring is arranged at the rodless cavity of described impact cylinder, or
Described compression spring is arranged between cylinder barrel outer wall and the external part of described impulsion cylinder of described impact cylinder.
Preferably, described dynamical system is hydraulic system, the rod chamber of described impact cylinder pass through reversal valve selectable with
The power oil-duct of described hydraulic system or oil return circuit connection, described energy storage device includes being arranged at the rodless cavity of described impact cylinder
Air chamber or air bag.
Preferably, described dynamical system includes hydraulic system, and the rod chamber of described impact cylinder and/or rodless cavity are selectable
Connect with the power oil-duct of described hydraulic system and oil return circuit.
Preferably, described ground loading verifying attachment also includes reversal valve and accumulator, and the rodless cavity of described impact cylinder leads to
Cross the power oil-duct of the selectable and described hydraulic system of described reversal valve or oil return circuit connects, the power of described hydraulic system
Oil circuit also impacts the rod chamber of cylinder and the outlet of described accumulator with described.
Preferably, described ground loading verifying attachment include reative cell and be placed in or sprayable enter indoor anti-of described reaction
Answer and be provided with, on thing, described body or ground loading verifying attachment, the guide that described reactant can be made to react.
Preferably, described guide is ignition system, and described reative cell is stock chest, and described reactant is explosive,
Described ignition system is used for igniting described explosive.
Preferably, described reactant is fuel, and described body or ground loading verifying attachment are additionally provided with fuel injection
System, described ground loading verifying attachment include guide rail, be arranged at reactor wall below described guide rail, be fixedly installed on described
Impact block below reactor wall and the sliding compression hammer being slideably positioned in described guide rail, described reactor wall, impact block and cunning
Form reative cell, described fuel injection system is used for described reative cell spray fuel between dynamic pressure contracting hammer.
Preferably, the top of described guide rail is provided with power assistant spring.
Preferably, described guide rail and described reactor wall are integrally formed, and are integrally cylindrical in shape structure.
Preferably, also include magnetic force accelerator, described ground loading verifying attachment includes slide rail and the slip being vertically arranged
It is arranged at the jump bit of described slide rail, described jump bit can accelerate to transport downwards under the magnetic field force effect of described magnetic force accelerator
Dynamic.
Preferably, also include power supply, described jump bit is conductive jump bit, described slide rail includes two pieces of electrified rail, institute
The two ends stating power supply are connected with the end of two pieces of described electrified rail, described conduction jump bit be located at two pieces of described electrified rail it
Between.
Preferably, also include power supply, described jump bit is secondary jump bit, described magnetic force accelerator include primary iron core and
Winding, described primary iron core is vertically arranged, and its side opens up fluted, and described winding is embedded in described groove, described power supply
It is connected with described winding, described secondary jump bit is placed in the side near described groove for the primary iron core.
Preferably, described body is provided with supporting leg and is arranged at support cylinder on described supporting leg, described ground loading
Verifying attachment is arranged on described supporting leg or described support cylinder.
Preferably, described ground loading verifying attachment is fixedly connected with described body or is detachably connected.
Preferably, described ground loading verifying attachment includes multiple, and multiple described ground loading verifying attachments are arranged side by side.
Preferably, also include controller, for controlling the startup of described ground loading verifying attachment, stopping, operating frequency
Or predetermined load.
Preferably, described predetermined load includes at least partly deadweight of described engineering machinery and described ground loading inspection dress
Put the shock loading of generation.
Preferably, also include the frequency conversion system being connected with described ground loading verifying attachment, described frequency conversion system is used for controlling
Make the frequency that described ground loading verifying attachment earthward applies predetermined load.
Preferably, the controller for controlling described ground loading verifying attachment working condition, described dynamical system are also included
System includes hydraulic pump, the servo-cylinder controlling described hydraulic pump and the control valve controlling described servo-cylinder, and described controller is also
Electrically connect with the control end of described control valve.
Preferably, described body is provided with supporting leg, described impact cylinder is arranged on described supporting leg, described impact cylinder is also used
In the described engineering machinery of support.
Preferably, the cylinder barrel of described body and described impact cylinder is horizontally disposed with the engaging lug cooperating, described company
Lug is by vertical bearing pin or bolt connection.
Preferably, described body is provided with hydraulic joint seat, the pipeline connecting with described impact cylinder is provided with hydraulic pressure
Joint, described hydraulic joint is detachably connected with described hydraulic joint seat.
The present invention due to ground loading verifying attachment being provided with the body of engineering machinery, with existing engineering machinery phase
Equipment possesses ground loading identification ability to ratio, before equipment availability, first earthward applies predetermined load, by judging ground
Change under predetermined load, judges, under worst operating mode, whether ground possesses enough enabling capabilities, can adapt in
Homogenizing and the examination requirements on heterogeneous body ground, fundamentally solve operator's range estimation or the insecure problem of micro-judgment, have
Effect ground avoids overthrow accident generation it is ensured that construction safety.Compared with carrying detection means with existing simple road surface, detection method
More simple, it does not need to judge that ground highest has great bearing capacity it is only necessary to judge that can ground ensure that equipment exists
Great engineering practicability can be had with safe construction under bad working environments, meanwhile, ground loading be checked concrete with equipment
Situation combines, and efficiently solves the problem that existing engineering machinery does not possess ground loading identification ability.
Brief description
The accompanying drawing constituting the part of the present invention is used for providing a further understanding of the present invention, the schematic reality of the present invention
Apply example and its illustrate, for explaining the present invention, not constituting inappropriate limitation of the present invention.In accompanying drawing：
Fig. 1 is the general illustration of engineering machinery of the present invention；
Fig. 2 is the schematic diagram of the ground loading verifying attachment of first embodiment of the invention；
Fig. 3 is the schematic diagram of the ground loading verifying attachment of second embodiment of the invention；
Fig. 4 is the schematic diagram of the ground loading verifying attachment of third embodiment of the invention；
Fig. 5 be fourth embodiment of the invention ground loading verifying attachment impact when schematic diagram；
Fig. 6 is the schematic diagram after the ground loading verifying attachment impact of fourth embodiment of the invention；
Fig. 7 is the schematic diagram of the ground loading verifying attachment of fifth embodiment of the invention；
Fig. 8 is the schematic diagram of the ground loading verifying attachment of sixth embodiment of the invention；
Fig. 9 is the schematic diagram of the ground loading verifying attachment of seventh embodiment of the invention；
Figure 10 is the schematic diagram of the ground loading verifying attachment of eighth embodiment of the invention；
Figure 11 is the schematic diagram of the ground loading verifying attachment of ninth embodiment of the invention.
In figure：
Body 10；Supporting leg 11；Support cylinder 12；Equipment 20；Impact cylinder 30；Cylinder barrel 31；Impulsion cylinder 32；Commutation
Valve 33；Accumulator 34；Power-assisted push rod 35；Air bag 36；Compression spring 37；Engaging lug 38；Air chamber 39；Backing plate 40；Mechanical type exciting
Device 50；Reative cell 60；Power assistant spring 61；Guide rail 62；Sliding compression hammer 63；Fuel 64；Impact block 65；Reactor wall 66；Magnetic force
Slide rail 70；Electrified rail 71；Conductive jump bit 72；Power supply 73；Winding 74；Secondary jump bit 75；Primary iron core 76；Magnetic flux density
Ripple 77.
Specific embodiment
It should be noted that in the case of not conflicting, the embodiment in the present invention and the feature in embodiment can phases
Mutually combine.To describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
As shown in figure 1, a kind of engineering machinery that the present invention provides, including body 10, body 10 is the main body of engineering machinery
Structure, can be the chassis of engineering machinery, such as have wheel undercarriage or the crawler body of driving functions, some engineering machinery also exist
Equipment 20 is provided with body 10, equipment 20, can be for arm support (as pump truck, lifting according to the difference of engineering machinery
Machine, elevating fire truck etc.), the structure such as working bucket (as digging machine) or clamping device (as stacker, front handling mobile crane etc.), during work, right
In the engineering machinery of no equipment, the deadweight of itself may be larger, has special requirement to load supporting ability of ground.For
There is the engineering machinery of equipment 20, the center of gravity of equipment 20 can be held essentially constant it is also possible to relatively with opposing body 10
Have in body 10 and significantly change.For the little engineering machinery of the gravity center shift of equipment 20, it usually needs snatch weight
Thing or specific construction, lead to engineering machinery entirety gravity center shift and ground in the face of the change of support force needed for impetus of body 10；
For the engineering machinery that the gravity center shift of equipment 20 is larger, center of gravity and each impetus stress change greatly, it usually needs set
Put supporting leg 11, to avoid tumbling during its work.
For making engineering machinery possess ground loading identification ability, before engineer machinery operation, judge under bad working environments,
Whether ground possesses enough bearing capacitys, it is to avoid tumble it is ensured that equipment safety is constructed, the engineering machinery of the present invention is additionally provided with
Ground loading verifying attachment, this ground loading verifying attachment is arranged on body 10, for before engineer machinery operation to ground
Apply predetermined load.During enforcement, according to limiting condition, start ground loading verifying attachment so as to earthward apply predetermined load,
In the face of the reaction of predetermined load, whether inspection ground being capable of load, predetermined load and the limit under utmost carrying ability operating mode in base area
The load of operating mode there may be certain relation, such as：The load (K >=1) of predetermined load=K × limiting condition.Predetermined load is permissible
It is that load in ground loading verifying attachment is pre-set at or according to engineering machine according to the intrinsic parameter of engineering machinery
The construction parameter (such as supporting leg elongation, lifting amount of substance etc.) of tool, calculates and obtains.The shape of ground loading verifying attachment imposed load
Formula can be the load of intrinsic load, the combination of shock loading, intrinsic load and shock loading or other forms, for some
Main equipment, when using a kind of load merely, ground loading verifying attachment is likely difficult to reach predetermined load, thus causing to detect
Device is huge or inspection difficulty is it is preferable that adopt the combination of constantly acting load and shock loading, and can be by the weight of engineering machinery itself
Amount as constantly acting load, such as：(n is the quantity of equipment impetus it is assumed that each to predetermined load=1/n × equipment self-weight+shock loading
Impetus mean forced), it should be noted that such situation is although equipment self-weight has shared a part of predetermined load, ground is held
Carry the real load producing of verifying attachment and only include shock loading, but equipment self-weight part is considered as during the work of this verifying attachment producing
A part for raw predetermined load.Meanwhile, ground loading verifying attachment can be separately set on body 10 it is also possible to and body
Some structures on 10 are mutually integrated, are such as integrated in wheel, and for the engineering machinery having supporting leg 11, ground loading verifying attachment also may be used
To be integrated in the support member (as the support cylinder 12 of supporting leg 11) of supporting leg 11, or simultaneous the inspection for ground loading of support member fills
Put.Furthermore it is also possible to setting controller, for controlling startup, stopping, operating frequency or the predetermined load of ground loading verifying attachment
The working conditions such as lotus, controller can be fixed controller or remote style controller, and controller can be arranged on this
It is also possible to be arranged on the other parts depending on body 10 on body 10, such as on equipment 20, supporting leg 11 first-class.Controller
Can be the control device of original control device on body 10 or special setting, as long as ground loading can be controlled
The working condition of verifying attachment.
Fig. 2 gives a kind of specific ground loading verifying attachment, and this ground loading verifying attachment includes mechanical type exciting
Device 50, body 10 is provided with dynamical system (not shown), and with mechanical type vibrator 50 drive connection, for driving machine
Tool formula vibrator 50 produces predetermined load.Due to employing mechanical type vibrator 50, can produce sharp during the work of mechanical type vibrator
Shake power, thus producing predetermined load to ground, predetermined load is easily dimmable, using reliability, if making full use of equipment gravity, can
To obtain good effect.If engineering machinery has supporting leg 11, mechanical type vibrator 50 can be arranged on the support of supporting leg 11
On oil cylinder 12.The form of mechanical type vibrator 50 has multiple, such as cam-type, and its concrete structure is referred to of the prior art sharp
Shake device, and type of drive can adopt motor, motor etc..In addition, controller can be connected with dynamical system, swashed with control machinery formula
Shaking the frequency of device 50, thus obtaining different predetermined loads, certainly, also dependent on the intrinsic characteristic of equipment, being fixed using frequency
Vibrator.
Fig. 3 gives second ground loading verifying attachment, and from unlike Fig. 2 scheme, the ground loading of employing is checked
Device is impact cylinder 30, body 10 is provided with dynamical system, the impulsion cylinder 32 of this impact cylinder 30 extends downwardly from, dynamical system
System is connected and described impulsion cylinder 32 can be driven to move downward to produce predetermined load with impact cylinder 30, and dynamical system is permissible
For hydraulic system, baric systerm, other power sources can also be included, be provided for impulsion cylinder 32 by hydraulic pressure, air pressure etc. dynamic
Power.Specifically, possess enough impulsive forces for ensureing impact oil cylinder, to produce enough shock loadings it is preferable that dynamical system
Including hydraulic system, the rod chamber inlet and outlet of fuel channel with hydraulic system selectable with rodless cavity impacting cylinder 30 connects, you can choosing
Selecting connect with hydraulic system power oil-duct or oil return circuit.Rod chamber is defined as the chamber that impulsion cylinder 32 passes through, no
Rod cavity is defined as the chamber that impulsion cylinder does not pass through, and in figure 3, the epicoele of impact cylinder 30 is rodless cavity, and cavity of resorption is rod chamber,
Similar in Fig. 5-8.Alternately give rod chamber and the rodless cavity oil-feed of impact cylinder 30 by hydraulic system, can constantly give ground
Implement impact, change the hydraulic fluid flow rate entering rod chamber and rodless cavity, thus it is possible to vary the movement velocity of impulsion cylinder, change
Alternate time interval, thus it is possible to vary the frequency of impact, by different impact velocitys and frequency, it is possible to obtain different impacts
Power, it is of course also possible to change the quality of impulsion cylinder changing impulsive force.
For alternately giving rod chamber and the rodless cavity oil-feed of impact cylinder 30, as shown in figure 3, commutation can be arranged in oil circuit
Valve 33, rod chamber and rodless cavity are connected with the inlet and outlet of fuel channel of hydraulic system by reversal valve 33, and reversal valve 33 can be two four
Electric change valve or two-position four-way pilot operated directional control valve etc..In addition, as shown in Figures 5 and 6, reversal valve 33 can also be two three
Logical reversal valve, the rodless cavity of impact cylinder 30 passes through the selectable power oil-duct with hydraulic system of reversal valve 33 or oil return circuit connects
Logical, the power oil-duct of hydraulic system is also connected with the rod chamber of impact cylinder 30.The mistake of the impulsion cylinder of impact cylinder impact downwards
Cheng Zhong, the rod chamber area due to impacting cylinder 30 is less than rodless cavity area, so impulsion cylinder 32 can move downward, due to having
The hydraulic oil of rod cavity simultaneously enters rodless cavity it is possible to increase the hydraulic fluid flow rate entering rodless cavity, improves impulsion cylinder
32 movement velocity, increases impulsive force, certainly can also arrange an accumulator 34, the power oil-duct of its outlet and hydraulic system
Connection, during the impulsion cylinder 32 of impact cylinder 30 impacts downwards, accumulator 34 can ensure that the flow entering rodless cavity
With pressure it is ensured that the movement velocity of impulsion cylinder 32.
It should be noted that in such scheme, the power oil-duct of hydraulic system and oil return circuit can also be only selective
Connect with the rodless cavity of impact cylinder 30, impulsion cylinder 32 moves upwards can manually or the mode such as spring reset.
For avoid because the hydraulic system impact cylinder impulsive force that reason causes such as be short of power not enough, as Fig. 5, Fig. 6 and Fig. 8 institute
Show, energy storage device can also be set, compressing power storage device when impulsion cylinder 32 moves upwards.Energy storage device can be fixed on cylinder
Cylinder 31 on, the part as ground loading verifying attachment it is also possible to be fixed on the correct position of body 10, as body 10
A part.So, when impulsion cylinder 32 moves upwards, energy storage device energy accumulation, impacts downwards in impulsion cylinder 32
When, energy storage device releases energy, and increases impulsive force.During enforcement, can be in the upside setting power-assisted of the piston of impact cylinder 30
Push rod 35, power-assisted push rod 35 passes through cylinder barrel 31 compressing power storage device.So, when the impulsion cylinder 32 of impact cylinder 30 is transported upwards
When dynamic, power-assisted push rod 35 compressing power storage device simultaneously puts aside energy, when the impulsion cylinder 32 impacting cylinder 30 impacts downwards, permissible
Passing through power-assisted push rod 35 by energy storage device provides a part of power to impulsion cylinder 32, increases impulsive force.Specifically, energy storage dress
Put and can include an energy storage cylinder and be placed in air bag 36 in energy storage cylinder, power-assisted push rod 35 leans one end of air bag 36 or spring,
Compressing gasbag 36 during power-assisted push rod 35 rising, puts aside energy, during power-assisted push rod 35 declines, releases energy, carries
High impact forces, certain air bag can also be substituted by spring, and principle is similar with aforementioned with model of action.In addition, energy storage device also may be used
Think an air chamber, power-assisted push rod 35 stretches in air chamber through cylinder barrel 31, when impulsion cylinder 32 moves upwards, power-assisted push rod
35 volumes in air chamber increase, thus the gas in compression air chamber, put aside energy, when impact cylinder 30 impulsion cylinder 32 to
During lower impact, can pass through power-assisted push rod 35 by air chamber provides a part of power to impulsion cylinder 32, increases impulsive force.
Certainly, the purpose supplementing power to impact cylinder 30 will be reached, as shown in fig. 7, can also be directly in impact cylinder 30
Rodless cavity arranges compression spring 37, and the two ends of compression spring 37 bear against the piston of impact cylinder 30 and the cylinder barrel of impact cylinder 30
31.When so impulsion cylinder 32 withdraws upwards, compression spring 37 can be compressed by piston, when impulsion cylinder 32 is to undershoot
When hitting, compression spring 37 releases energy, and improves impulsive force.It should be noted that compression spring 37 can be arranged at impact cylinder 30
Cylinder barrel 31 outer wall and the external part of described impulsion cylinder 32 between, specifically, compression spring 37 can be sheathed on impact
On the external part of piston rod 32, positioned at the lower section of cylinder barrel 31 diapire of impact cylinder 30.
Can be had multiple by the way of impact cylinder, Fig. 8 shows another kind of ground loading inspection including impact cylinder 30
Device, dynamical system includes hydraulic system and the energy storage device being arranged on body 10, the impulsion cylinder 32 of impact cylinder 30 to
Under stretch out, the rod chamber of impact cylinder 30 passes through the selectable power oil-duct with hydraulic system of reversal valve 33 or oil return circuit even
Logical, compressing power storage device when impulsion cylinder 32 moves upwards.By arranging energy storage device, when the rod chamber of impact cylinder 30 enters
Oil, impulsion cylinder 32 moves upwards, now compressing power storage device, energy storage device accumulation of energy, and when reversal valve 33 commutates, rod chamber is let out
Oil, now energy storage device release energy, for impulsion cylinder 32 provide power.The concrete form of energy storage device has multiple, specifically
Ground, energy storage device can be for being arranged at the air chamber 39 of the rodless cavity of impact cylinder 30.Air chamber 39 can be just for impacting the no bar of cylinder 30
Chamber, the inside is filled with the gas of certain pressure.It should be noted that air chamber could alternatively be air bag or spring, or in air chamber
Increase spring.In addition, energy storage device can also be disposed on impacting cylinder barrel 31 outer wall of cylinder 30 and stretching out of impulsion cylinder 32
Spring between end.
The aforementioned list form of several ground loading verifying attachments, but the embodiment of this device is not limited to this, such as
Impact energy can also be obtained by way of chemical reaction, with reference to Fig. 9, ground loading verifying attachment includes reative cell 60 and puts
In or sprayable enter reative cell 60 in reactant, body 10 or ground loading verifying attachment are provided with can make described reactant
The guide reacting, such as ignition system.For some reactants, can be lighted by way of compression ignition or shock,
Accordingly, guide can be briquetting or impact hammer etc.；For by mixing the situation making reactant react, guiding dress
Put and correspond to blender.In scheme, reacted by guiding reactant, energy is produced by reaction, thus applying to ground
Impulsive force, obtains predetermined load.Specifically, guide is ignition system, and reative cell 60 can be stock chest, and reactant is permissible
For explosive, such as TNT explosive, ignition system is for detonation of explosives.By ignition system detonation of explosives, safe and reliable, by
Larger energy can be obtained in the short time in blast, by controlling the consumption of explosive, desired predetermined load can be obtained.
In addition, in aforementioned schemes, specifically as shown in figure 9, reactant can also be fuel 64, body 10 or ground loading are examined
Fuel injection system is additionally provided with experiment device, ground loading verifying attachment includes guide rail 62, is arranged at the anti-of guide rail 62 lower section
Answer cavity wall 66, the impact block 65 being fixedly installed on reactor wall 66 lower section and the sliding compression being slideably positioned in guide rail 62 hammer 63 into shape,
Form reative cell 60, fuel injection system is used for reative cell spray between reactor wall 66, impact block 65 and sliding compression hammer 63
Penetrate fuel 64.The fuel 64 of spraying system injection can be the flammable liquids such as gasoline, kerosene, diesel oil, or the gas such as methane, acetylene
Fluid fuel, is the device of diesel oil for fuel, can be ignited by way of compression ignition, accordingly, as the briquetting of guide
Just 63 can be hammered into shape for sliding compression, directly by the compression ignition diesel oil of sliding compression hammer 63, structure is simple, practical；For vapour
The fuel such as oil, methane, guide can be ignition system, can accurately control the duration of ignition by ignition system simultaneously.Sliding
Dynamic pressure contracting hammer 63 is used for compressed fuel 64, so that fuel 64 is burnt fully and produce bigger energy.It is appreciated that if oxidation
Reaction, can be separately provided an air supply channel (as supplied with pure oxygen passage), or oxygen is mixed by a certain percentage with fuel 64
Close, spray into reative cell 60 together.By to spray fuel 64 in reative cell 60, and ignited by guide, so permissible
Burning expansion simultaneously hammers 63 generations enormous impact force upwards, simultaneously from the conservation of momentum, preservation of energy, impact into shape to sliding compression
Block 65 also can be subject to downward extreme shock power, thus obtaining load, after sliding compression hammer 63 moves to extreme higher position, in gravity
Effect is lower to get off along guide rail 62 landing, can be in reative cell 60 compressed fuel 64, new fuel 64 work by combustion right again
Ground produces shock loading.By controlling the consumption to reative cell 60 spray fuel for the fuel injection system, can control and light combustion
The energy producing after material, thus control impulsive force.In further scheme, the top of guide rail 62 is provided with power assistant spring 61.
During sliding compression hammer 63 moves upwards, power assistant spring 61 can be compressed after motion stretch journey, it is to avoid guide rail 62 was arranged
Long, after power assistant spring 61 is compressed to certain position, the speed of sliding compression hammer 63 is zero, in gravity and power assistant spring 61
Under collective effect, sliding compression can be driven to hammer 63 adverse movements, quick landing compressed fuel 64 into shape, enter the impact of next round.
It should be noted that mentioned by reactor wall 66, impact block 65 and sliding compression hammer 63 formation reative cell 60, if impact block 65
Increased an interlayer (if reactor wall 66 is the structure of a bottom lock, impact block 65 to be fixed on and reative cell 60 between
The lower section of enclosed construction), now although impact block does not directly form reative cell 60, it is nevertheless believed that the formation bag of reative cell 60
Contain impact block 65.
In addition, guide rail 62 is preferably integrally formed by such scheme with reactor wall 66, integrally it is cylindrical in shape structure, this spline structure
More simple, it is easy to manufacture and assemble it is of course possible to adopt various forms of tubular structures, such as cylinder, square tube, cylindroid etc..
Except above-mentioned by the way of the chemical reaction in addition to, other modes can also be adopted.Shown in reference Figure 10, ground loading
Verifying attachment includes the slide rail 70 being vertically arranged and the jump bit being slideably positioned in described slide rail 70, in addition, setting magnetic force accelerates
Device, jump bit can accelerate to move downward under the magnetic field force effect of magnetic force accelerator.Magnetic force accelerator can be arranged on body 10
Or on ground loading verifying attachment, as long as its magnetic field can accelerate to jump bit,.During operation, jump bit is in the work of gravity
With under, accelerate fall, in addition magnetic force accelerator also can give one power of jump bit simultaneously, increase its fall acceleration.This programme
In, can improve the speed of jump bit whereabouts by extending the height of slide rail 70 or the magnetic field intensity increasing magnetic force accelerator
Degree, thus improving impulsive force, increases load.It should be noted that jump bit can be a combinative structure, such as bottom is impact
Portion, is directly contacted with ground during operation, and top is forced section, magnetic field force act on forced section naturally it is also possible to directly as
Integrally, that is, impact portion also can be magnetic field force induced.
Further, as shown in Figure 10, it is provided with power supply 73, power supply can be arranged on body 10 or ground loading inspection dress
Put, jump bit is conductive jump bit 72, slide rail 70 includes two pieces of electrified rail 71, the two ends of power supply 73 and two pieces of electrified rail
71 end connects, and conductive jump bit 72 is located between two pieces of electrified rail 71.Such two pieces of electrified rail 71, conductive jump bit
72 and power supply 73 together and constitute magnetic force accelerator, take full advantage of the ground loading verifying attachment structure of itself, power supply 73
Can be DC source or alternating current power supply.The operation principle of device is as follows：Power supply 73 is energized it is assumed that the direction of electric current i
As shown in Figure 10 (left side electrified rail 71 electric current i direction downwards, the right electrified rail 71 electric current i direction is upwards), now two
The magnetic direction that block electrified rail produces perpendicular to paper is outwards, the sense of current of conductive jump bit 72 from left to right, now
Conductive jump bit 72 is the electrical conductor in magnetic field, the direction of Lorentz force F from top to bottom, therefore under conductive jump bit 72
During falling, can accelerate to it always.
It should be noted that being to produce magnetic field using the structure of ground loading verifying attachment itself in such scheme, also may be used
To be separately provided magnetic field, after impact hammering blow, can automatically rise to the top of slide rail 70, setting can be increased
One power-on circuit, after impacting hammering blow, by other circuit, allow Lorentz force direction upwards, certainly also may be used
Using manual or other type of drive.
As Figure 11, show the ground loading verifying attachment that another kind comprises magnetic force accelerator, (may be disposed at including power supply
Body 10 or ground loading verifying attachment, in figure is not shown), jump bit is secondary jump bit 75, and magnetic force accelerator includes primary
Iron core 76 and winding 74, primary iron core 76 is vertically arranged, and its side opens up fluted, and winding 74 is embedded in groove, power supply with
Winding 74 connects, and secondary jump bit 75 is slidably arranged on slide rail 70, is placed in primary iron core 76 near the side of groove.Power supply
Can be unidirectional, three equal power supplys, secondary jump bit 75 can be secondary using grid-type, such as slots on steel jump bit, in groove
In embedded copper bar (or cast aluminium), then formed in shorted on both ends with copper strips；Both can also rise for steel secondary or magnetic secondary, such as steel
Magnetic conduction acts on, and plays electric action again, and because the resistivity of steel is larger, therefore the secondary electromagnetic performance of steel is poor, and Normal Force
Greatly 10 times about of thrust (about)；It can in addition contain using composite secondary and nonmagnetic secondary etc., as long as being suitable for doing secondary
Material.Primary iron core 76 can be built up with general stalloy, and winding 74 can also be using the winding material of general motor
Material.Operation principle is as follows：It is passed through the electric current (as three-phase alternating current) of change by power supply in winding 74, thus can produce in outside
One air gap fundamental wave magnetic field, the magnetic flux density ripple 77 in this magnetic field is rectilinear movement, therefore also referred to as travelling-magnetic-field, due to traveling wave
Magnetic field is mobile, and speed is Vs, and as shown in Figure 11 (downward), secondary jump bit 75, will under traveling wave magnetic field intercepts in direction
Induce electromotive force and produce electric current, this electric current just produces electromagnetic push F with the magnetic field phase separation in air gap, its direction is downward,
Thus accelerating secondary jump bit 75 to fall.By being controlled to power supply, electromagnetic push size and direction can be controlled.
In aforementioned schemes, employ the principle of linear electric motors work, primary, secondary is the art of those skilled in the art
Language.Furthermore it is preferred that primary iron core 76 arranges two, it is symmetrically distributed in the both sides of secondary jump bit 75, slide rail 70 is arranged on two
The centre of secondary jump bit 75, as such, it is possible to increase magnetic field and faradic current, increases impulsive force.
The present invention due to ground loading verifying attachment being provided with the body of engineering machinery, with existing engineering machinery phase
Equipment (acute pyogenic infection of finger tip engineering machinery) possesses ground loading identification ability to ratio, before equipment availability, first earthward applies predetermined load
Lotus, judges, under worst operating mode, whether ground possesses enough enabling capabilities, fundamentally solve operator range estimation or
The insecure problem of micro-judgment.Simultaneously as the complexity of different work environmental geology, inhomogeneities, according to traditional
Ground loading detection method, is calculated by analogy or scale modeling, can only obtain fritter ground surface carry result it is extremely difficult to
Meet the requirement of field operation, and the present invention earthward applies predetermined load according to equipment real demand, just permissible before operation
Carry out the test of bad working environments, adapt to the examination requirements of homogenizing and heterogeneous body ground, be effectively prevented from overthrow accident during operation and send out
Raw it is ensured that construction safety.Compared with carrying detection means with existing simple road surface, detection method is more simple, and it does not need
Judge that ground highest has great bearing capacity, be not using usual detection mode, to obtain a ground loading energy
The result of power, it only needs to be applied to ground with predetermined load, makes the correct judgement that can a ground carry, that is, only needs to
Judge that can ground ensure equipment safe construction under bad working environments, there is great engineering practicability, ground is held meanwhile
Carry inspection to combine with the concrete condition of equipment, simultaneously the intrinsic dynamical system of utilizing works machinery or hydraulic system, without volume
Outer offer power, efficiently solves the problem that existing engineering machinery does not possess ground loading identification ability.
In further scheme, arranged by modes such as mechanical type vibrator, impact cylinder, chemical reaction or magnetic force acceleration
Ground loading verifying attachment, embodiment is various, and feasibility is higher, furthermore it is possible to the size choosing according to required predetermined load
Select the verifying attachment of multi-form, power or type of drive are various, can adapt to the demand of distinct device and construction environment.
In such scheme, if engineering machinery is provided with supporting leg 11 and the support cylinder 12 for propping works machinery, ground
Face carries verifying attachment and can be arranged on supporting leg or support cylinder, specifically can be found in Fig. 1-Fig. 8.In addition, ground loading inspection
Device can be fixedly connected with body 10, such as by each main impetus of engineering machinery (or the referred to as strong point, such as supporting leg
Support oil cylinder 12) a ground loading verifying attachment is nearby fixedly installed, whether detection ground disclosure satisfy that equipment requirements, the company of fixation
Connect using simple, convenient.But, in order to mitigate equipment own wt, reduce the use of ground loading verifying attachment, only needing
Use during detection or to the supporting leg 11 needing detection, ground loading verifying attachment can be detachably connected with body 10, each
The individual point needing detection arranges the corresponding interface (structure, power, control interface etc.), can by body 10 and ground loading verifying attachment
Dismounting connects, and when needing to use, ground loading verifying attachment is connected with body 10 in precalculated position, then connects and move accordingly
Power, hydraulic pressure or control circuit, thus easily being detected, are had the advantage that using being detachably connected：(1) cost is lower, no
Each supporting leg configuration one tread is needed to carry verifying attachment it is only necessary to every equipment or even multiple devices configure one；(2)
Use more convenient, flexible, because simultaneously not all ground is both needed to detect, accordingly, as independent part, impact cylinder permissible
Only use when needing, more convenient flexible；(3) impact device can be made more compact, as long as its load to ground
Lotus disclosure satisfy that equipment use demand.
For realizing being detachably connected of ground loading verifying attachment and body 10, taking the scheme using impact cylinder 30 as a example,
Specifically as shown in figure 4, being horizontally disposed with the engaging lug 38 cooperating, engaging lug on the cylinder barrel 31 of body 10 and impact cylinder 30
38 excessively vertical bearing pins or bolt connection.Because engaging lug 38 is horizontally disposed with, bearing pin or bolt are vertically arranged, and impact cylinder 30 works
When, bearing pin and bolt do not stress, and extend the service life of bearing pin or bolt.During use, engaging lug is aligned, inserts bearing pin or spiral shell
Bolt, then connects other hydraulic pressure or control circuit, and can be detected, using terminating, unloads each circuit, takes off bearing pin or spiral shell
Bolt, impact cylinder 30 is placed on the precalculated position on body, easy to use, certainly, for the engineering machinery having supporting leg 11, connects
Ear 38 can also be arranged on supporting leg 11 or the cylinder barrel of support cylinder 12 of supporting leg 11.Ground loading verifying attachment and body 10
Connection can be with not limited to this, as long as being capable of being detachably connected.In addition, the company of the underground for impact cylinder 30
Connect, hydraulic joint seat can be arranged on body 10, and hydraulic joint arranged on the impact pipeline that connect of cylinder 30, hydraulic joint and
Hydraulic joint seat is detachably connected.By the connection of joint and plinth, connection can be made convenient, reliable.
For in the above-mentioned scheme using impact cylinder 30, for the engineering machinery with supporting leg 11, for simplifying knot further
Impact cylinder 30 and support cylinder 12 can be made an oil cylinder by structure, and that is, impact cylinder 30 is both as the impact applying predetermined load
Cylinder, also serves as the support cylinder of propping works machinery, if desired makes full use of equipment self-weight, preferably impact cylinder 30 and support cylinder
12 differentiations, each realize its function, and as shown in Figure 5, Figure 6, support cylinder 12 is arranged side by side with impact cylinder 30, in Fig. 7, supports oil
Cylinder 12 setting nested with impact cylinder 30, specifically, support cylinder 12 is arranged on the outside of impact cylinder 30, the piston of support cylinder 12
On 121 cylinder barrels 31 being fixed on impact cylinder 30, the cylinder barrel 122 of support cylinder 12 can be with respect to the cylinder barrel of impact cylinder 30 about 31
Mobile, by the epicoele of support cylinder 12 and cavity of resorption oil-feed, it is possible to achieve the up and down motion of the cylinder barrel 122 of support cylinder 12,
When moving downward, can support on ground, realize the function of support cylinder 12, then start impact cylinder 30 and carry out ground loading
Inspection.Certainly support cylinder 12 may also be arranged on the inside of impact cylinder 30, and concrete structure is similar with aforementioned, will not be described in detail herein.
In such scheme, for can relatively accurately check the load supporting ability of ground of certain area, can be during detection
One piece of backing plate 40 is placed on ground, increases lifting surface area, improves the accuracy of inspection simultaneously.If certain testing result shows, ground
Face bearing capacity is not enough, can be detected again by increasing the area of backing plate 40, it is to avoid again find construction location.In addition, it is right
In using impact cylinder 30 scheme in it is also possible to the end of impulsion cylinder 32 arrange impact backing plate, increase lifting surface area and
The stationarity of impact.
For in the above-mentioned scheme using impact cylinder 30 or mechanical type vibrator 50, the impulsive force for realizing impact cylinder 30 can
Adjust, and shock loading is adjustable, to adapt to the demand of tandem product, dynamical system can include hydraulic pump, control hydraulic pump
Servo-cylinder and the control valve controlling servo-cylinder, controller is also electrically connected with the control end of control valve.So, by controlling liquid
The pressure of press pump and/or discharge capacity, can control the impulsive force of impact cylinder.In the case that dynamical system includes motor, controller
Can also directly be connected with the control end of motor.
In such scheme, the working environment due to engineering machinery varies, and the geological condition of Different Ground differs greatly,
If using fixed frequency ground loading verifying attachment it is difficult to adapt to varying environment demand it is preferable that also setting up a change
Display system, it is connected with ground loading verifying attachment, for controlling ground loading verifying attachment earthward to apply predetermined load
Frequency.Frequency as mechanical type vibrator is changed with certain rule in time, or make the frequency of impact of impact cylinder in time with
Certain rule changes, and frequency conversion system can be integrated in controller or ground loading verifying attachment, by controller control, pass through
Change the frequency that ground loading verifying attachment applies predetermined load, improve adaptability.
In addition, ground loading verifying attachment can include multiple, multiple ground loading verifying attachments are arranged side by side.Due to adopting
With multiple ground loading verifying attachments, the impulsive force of single assembly offer can be suitably provided, increase the service life it is also possible to carry
High maximum impact force it is often more important that, due to employing multiple ground loading verifying attachments, can simultaneously to multiple devices apply
Different frequencies and impulsive force, thus adapting to the requirement using in different environments, certainly, multiple ground loading verifying attachments can
With by controller centralized Control.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement made etc., should be included within the scope of the present invention.
Claims (27)
1. a kind of engineering machinery, including body (10) it is characterised in that being provided with ground loading inspection dress on described body (10)
Put, described ground loading verifying attachment is used for applying predetermined load, described predetermined load to ground before described engineer machinery operation
The load that lotus earthward applies under limiting condition more than or equal to described engineering machinery.
2. engineering machinery according to claim 1 is it is characterised in that also include the dynamical system being arranged on body (10)
System, described ground loading verifying attachment includes mechanical type vibrator (50), described dynamical system and described mechanical type vibrator
(50) drive connection, for driving described mechanical type vibrator (50) to produce predetermined load.
3. engineering machinery according to claim 1 is it is characterised in that also include the dynamical system being arranged on body (10)
System, described ground loading verifying attachment includes impacting cylinder (30), and the impulsion cylinder (32) of described impact cylinder (30) extends downwardly from,
Described dynamical system is connected with described impact cylinder (30) and that described impulsion cylinder (32) can be driven to move downward is predetermined to produce
Load.
4. engineering machinery according to claim 3 is it is characterised in that also include energy storage device, described impulsion cylinder
(32) compress described energy storage device when moving upwards.
5. engineering machinery according to claim 4 is it is characterised in that the upside of the piston of described impact cylinder (30) is provided with
Power-assisted push rod (35), described energy storage device includes energy storage cylinder and is placed in air bag (36) or spring in described energy storage cylinder, described helps
Push one end that bar (35) passes through the cylinder barrel (31) of described impact cylinder (30) and acts against described air bag (36) or spring；Or institute
Stating energy storage device is air chamber, and described power-assisted push rod (35) stretches into described air chamber.
6. engineering machinery according to claim 4 is it is characterised in that described energy storage device is compression spring (37), described
Compression spring (37) is arranged at the rodless cavity of described impact cylinder (30), or described compression spring (37) is arranged at described impact cylinder
(30) between cylinder barrel (31) outer wall and the external part of described impulsion cylinder (32).
7. engineering machinery according to claim 4 it is characterised in that described dynamical system be hydraulic system, described impact
The rod chamber of cylinder (30) passes through the power oil-duct of the selectable and described hydraulic system of reversal valve (33) or oil return circuit connects, institute
State the air chamber (39) of rodless cavity or the air bag that energy storage device includes being arranged at described impact cylinder (30).
8. engineering machinery according to claim 3 it is characterised in that described dynamical system be hydraulic system, described impact
The power oil-duct of selectable with the rodless cavity and described hydraulic system of rod chamber of cylinder (30) and oil return circuit connect.
9. engineering machinery according to claim 8 is it is characterised in that described ground loading verifying attachment also includes reversal valve
(33) and accumulator (34), the rodless cavity of described impact cylinder (30) pass through described reversal valve (33) selectable with described hydraulic pressure system
The power oil-duct of system or oil return circuit connection, the power oil-duct of described hydraulic system also with the rod chamber of described impact cylinder (30) and
The outlet of described accumulator (34).
10. engineering machinery according to claim 1 is it is characterised in that described ground loading verifying attachment includes reative cell
(60) and be placed in or sprayable enter described reative cell (60) in reactant, on described body (10) or ground loading verifying attachment
It is provided with the guide that described reactant can be made to react.
11. engineering machinery according to claim 10 are it is characterised in that described guide is ignition system, described anti-
Room (60) is answered to be stock chest, described reactant is explosive, described ignition system is used for igniting described explosive.
12. engineering machinery according to claim 10 it is characterised in that described reactant be fuel (64), described body
(10) or it is additionally provided with fuel injection system on ground loading verifying attachment, described ground loading verifying attachment includes guide rail
(62), it is arranged at the reactor wall (66) below described guide rail (62), be fixedly installed on rushing below described reactor wall (66)
Hit block (65) and sliding compression hammer (63) being slideably positioned in described guide rail (62), described reactor wall (66), impact block (65)
And between sliding compression hammer (63), forming reative cell (60), described fuel injection system is used for spraying combustion to described reative cell (60)
Material (64).
13. engineering machinery according to claim 12 are it is characterised in that the top of described guide rail (62) is provided with power-assisted bullet
Spring (61).
14. engineering machinery according to claim 12 are it is characterised in that described guide rail (62) and described reactor wall (66)
It is integrally formed, be integrally cylindrical in shape structure.
15. engineering machinery according to claim 1 it is characterised in that also including magnetic force accelerator, examine by described ground loading
Experiment device includes the slide rail (70) being vertically arranged and the jump bit being slideably positioned in described slide rail (70), and described jump bit can be in institute
The lower acceleration of magnetic field force effect stating magnetic force accelerator moves downward.
It is characterised in that also including power supply (73), described jump bit is to lead to 16. engineering machinery according to claim 15
(72) are hammered in surge into shape, and described slide rail (70) includes two pieces of electrified rail (71), and the two ends of described power supply (73) are described with two pieces logical
The end of conductance rail (71) connects, and described conduction jump bit (72) is located between two pieces of described electrified rail (71).
It is characterised in that also including power supply, described jump bit is secondary punching to 17. engineering machinery according to claim 15
Hammer (75), described magnetic force accelerator includes primary iron core (76) and winding (74), and described primary iron core (76) is vertically arranged, its
Side opens up fluted, and described winding (74) is embedded in described groove, and described power supply is connected with described winding (74), described time
Level jump bit (75) is placed in the side near described groove for the primary iron core (76).
18. engineering machinery according to any one of claim 1-17 are propped up it is characterised in that being provided with described body (10)
Lower limb (11) and be arranged at support cylinder (12) on described supporting leg (11), described ground loading verifying attachment is arranged at described supporting leg
(11) or on described support cylinder (12).
19. engineering machinery according to any one of claim 1-17 it is characterised in that described ground loading verifying attachment with
Described body (10) is fixedly connected or is detachably connected.
20. engineering machinery according to any one of claim 1-17 are it is characterised in that described ground loading verifying attachment bag
Include multiple, multiple described ground loading verifying attachments are arranged side by side.
21. engineering machinery according to any one of claim 1-17 are it is characterised in that also include controller, for controlling
The startup of described ground loading verifying attachment, stopping, operating frequency or predetermined load.
22. engineering machinery according to any one of claim 1-17 are it is characterised in that described predetermined load includes at least portion
Divide the shock loading that the deadweight of described engineering machinery and described ground loading verifying attachment produce.
23. engineering machinery according to any one of claim 2-9 are it is characterised in that also include examining with described ground loading
The frequency conversion system that experiment device connects, described frequency conversion system is used for controlling described ground loading verifying attachment earthward to apply predetermined load
The frequency of lotus.
24. engineering machinery according to any one of claim 2-9 are it is characterised in that also include for controlling described ground
Carry the controller of verifying attachment working condition, described dynamical system includes hydraulic pump, controls the servo-cylinder of described hydraulic pump
And controlling the control valve of described servo-cylinder, described controller also electrically connected with the control end of described control valve.
25. engineering machinery according to any one of claim 3-9 are it is characterised in that be provided with supporting leg on described body
(11), described impact cylinder (30) is arranged on described supporting leg (11), and described impact cylinder (30) is additionally operable to support described engineering machinery.
26. engineering machinery according to any one of claim 3-9 are it is characterised in that described body (10) and described impact
The engaging lug (38) cooperating is horizontally disposed with the cylinder barrel (31) of cylinder (30), described engaging lug (38) passes through vertical bearing pin
Or bolt connection.
27. engineering machinery according to any one of claim 3-9 are it is characterised in that be provided with liquid on described body (10)
Crimping headstock, the pipeline connecting with described impact cylinder (30) is provided with hydraulic joint, described hydraulic joint is connect with described hydraulic pressure
Headstock is detachably connected.
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| CN201310669271.1A CN103625440B (en) | 2013-12-10 | 2013-12-10 | Engineering machinery |
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| CN201310669271.1A CN103625440B (en) | 2013-12-10 | 2013-12-10 | Engineering machinery |
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| CN104477797B (en) * | 2014-11-10 | 2016-05-04 | 中联重科股份有限公司 | Wheel crane operation vibration-proof device, system and method and wheel crane |
| CN104627844A (en) * | 2014-12-10 | 2015-05-20 | 中联重科股份有限公司 | Engineering machinery and monitoring equipment, system and method for front ground endurance of engineering machinery |
| CN105060139A (en) * | 2015-09-10 | 2015-11-18 | 无锡市运达机械有限公司 | Base chassis of fixed crane convenient to disassemble |
| CN113800402B (en) * | 2021-08-23 | 2022-09-16 | 中联重科股份有限公司 | Collapse identification method, processor and device for engineering machinery |
| CN114933254B (en) * | 2022-06-16 | 2023-10-13 | 江苏中矿重型装备有限公司 | Lower supporting device for supporting wheel scrap steel heavy plate conveyor |
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