CN203772457U - Measuring system for determining bearing force on bearing element of bearing structure - Google Patents

Abstract

The utility model relates to a measuring system for determining a bearing force on a bearing element of a bearing structure. The measuring system comprises at least one measuring element and a supporting leg, wherein the at least one measuring element is connected with a deforming body which can deform under the action of a bearing force to form a sensor, and sends out a signal proportional to the bearing force; the supporting leg comprises a sensor and is connected with the bearing element is a movable manner. The measuring system is characterized in that the supporting leg is provided with a storage for storing electric energy and a radio transmitter, the radio transmitter is connected with the sensors, and is configured to transmit the signal which is proportional to the bearing force and detected by the sensors to a radio receiver in a machine in a wireless manner.

Description

For determining the measuring system of the supporting power on the supporting member of supporting structure

Technical field

The utility model relates to a kind of measuring system, and the force cell that it has for detection of the supporting power in supporting structure is particularly useful for detecting the supporting power in supporting member, and supporting member forms a part for supporting structure.Supporting structure is applied to the static crane setting up, the acting machine being supported, the lifting vehicle of wheeled, the hoisting machine of wheeled, probing vehicle, self-propelled balladeur train etc., and it is hereinafter referred to as acting machine or machine.

Background technology

In Fig. 1, schematically show lifting vehicle 1, it is for fixed position and stand on during operation supporting member 2, and described supporting member is also referred to as leg.Supporting member 2 is arranged in the bottom section of protractile support 3, and this support is fixed on the framework 44 of vehicle.Each in support 3 can be configured to telescoping shoring column, and this support can utilize external force to assist or by linear movement, be placed in the working position that its side direction is stretched out from vehicle without external force is auxiliary from framework 44.Also possible that, support 3 is constructed pivotly, make support 3 utilize if desired external force auxiliary by moving to the working position extending laterally from vehicle around axis pivoting action vertical or level.The end regions of support also can move in working position by pivotable and the stretching motion of combination.In this case, support itself can length adjustment (scalable) and is placed on vehicle pivotly on one end.In another kind of configuration, support also can have a plurality of turnover link rods, makes support along with folding movement can be folded in working position.The forms of motion of stretching motion, pivoting action and combination will be contained by term " overhanging motion (be drawn out of or stretch out) " at this.

At place, use location, whole lifting vehicle (being generally speaking machine) is preferably raised by supporting member 2 with hydraulic way, and wherein supporting member 2 can be extended on its support 3 with hydraulic way in advance.So do not contact with ground as long as wheel has conventionally, but at least lighten the load.

If measure the power that is vertically delivered to ground by supporting member, especially when load, lifting can determine the weight distribution of whole system (machine supporting comprises bearing load) and the center of gravity of definite whole system thus.Measured value is configured to be used to determine the pour(ing) point of machine or crane.For measuring the possibility of supporting power, be, in the line of force of each supporting member, locate force cell.So this force cell output is corresponding to the signal of corresponding supporting power, this signal is for example analyzed in foregoing mode.

The application EP2159428 of Liebherr shows the solution for sensor is connected or is connected with crane.This solution uses the slider in mesotube to connect to come signal transmission.Utilize this solution can only realize one pole solution.So the vehicle mass body of crane must be used as second utmost point.Yet this can cause conduction current and fault in the situation that of wet ground or when rainy, therefore this signal can be increased the weight of fault burden thus.In addition, the dangerous slider that is that in cylinder body, connection is opened wide interrupts in principle.

In addition, single line connects for the common technique of the multipole connection of needs and is not suitable for.Like this, for reliable connection, need at least five utmost points as Canbus, but also for the connection of two utmost points of 4-20mA Technology Need or three utmost points.

Utility model content

Task of the present utility model is to propose a kind of firmly supporting power measuring system, it has the power sensor for movable protractile supporting member, and this supporting power measuring system corresponding to the load (supporting power) carrying with supporting member provides reliably at signal.

This task solves by having the supporting power measurement mechanism of the feature of independent claims.

According in form of the present utility model, for measuring the supporting power measurement mechanism of the supporting power on the movable supporting member of the supporting structure of especially movable acting machine, there is at least one measuring sensor, it connects and sends and the proportional signal of supporting power to deformable body that can deformation under supporting power effect, and has for signal proportional to supporting power being transferred to at least one electrical connection of analytical equipment.Supporting member and/or supporting structure have at least one adjustable section between rest position and working position, and wherein the relative position between measuring sensor and analytical equipment changes.Electrical connection is cable, and it connects the adjustable relative to each other section of supporting member or supporting structure, this cable follow supporting member or supporting structure section relative position adjusting and change its length and automatically turn back to its initial length.

By using multi-core cable a plurality of terminals of sensor can be connected with analytical equipment simultaneously, can carry out thus Power supply and measured value intercepting simultaneously.Also can detect a plurality of measured values, for example supporting power and temperature simultaneously.In addition, the connection by cable is connected with slider to be compared more reliably, and this slider connects and is subject to all the time little wearing and tearing.

Preferably, adjustable section is connected with the piston/cylinder arrangements of hydraulic pressure and the cylinder body chamber ground of cable break-through piston/cylinder arrangements is arranged.

Preferably, cable is connected through cylinder wall with the electric current guiding device of Fluid Sealing on the one hand, and with electricity, is firmly connected with mechanical system through piston with the electric current guiding device of Fluid Sealing on the other hand.

Preferably, cable guides in multi-piece type telescopic protection pipe, and wherein the section of the respective end side of telescopic protection pipe is connected with piston or cylinder base.

Preferably, cable has original shape, and cable is followed lax strain and automatically returned to original shape, and wherein original shape is spirality, scroll, corrugated, serrate or annular or the combination with these basic configurations.For example, required elasticity can be by the respective configuration of cable outer cover, cable itself or by realizing with the film cable of corresponding pre-deformation.

Preferably, the original form of cable especially the spirality original shape of cable in the interior diameter deformation matchingly of this and cylinder body, so that guiding cable.

Equally, cable is preferably wound up into upper volume device automatically, and on this, volume device starts to roll cable from both sides in central section under elastic force and preferably.

Preferably, cable is multicore.In this way, unlike signal can be transferred to for analyzing simultaneously, and signal can be temperature signal etc. except supporting power measuring-signal.

Preferably, supporting structure has can level overhanging support and/or is placed in the supporting member that can vertically regulate with hydraulic way in bracket end, and wherein deformable body is placed on support and/or supporting member together with measuring sensor.Especially preferably, supporting member has the hydraulic cylinder with piston rod, and wherein deformable body forms a section of piston rod.

Alternatively or additionally, supporting member has leg, for supporting on the ground, wherein deformable body is placed in the jointing between piston rod and leg, or forms jointing.Preferably, jointing is spherical link rod and deformable body is the ingredient of spherical link rod.

Preferably, the configuration of deformable body be chosen as make deformable body in supporting power direction deformable and relative be hard in a lateral direction.

Preferably, the extension that analytical equipment can Bracket for Inspection and utilize the correlation measure of supporting power to calculate to determine the centre of gravity place of machine.

Additionally, support is by dynamometry bolt bearing in overhanging position, and this measures the load of the machine side of bolt Bracket for Inspection.

Preferably, support by one or more piston/cylinder arrangements, with hydraulic way, regulate and cable break-through piston/cylinder arrangements arrange.

At another kind according in form of the present utility model, for measuring the supporting power measurement mechanism of the supporting power on the movable supporting member of the supporting structure of especially movable acting machine, there is at least one measuring sensor, it connects to form sensor and sends and the proportional signal of supporting power to deformable body that can deformation under supporting power effect, and has and contain leg sensor and that be connected movingly with supporting member.Supporting member comprises electric wire cable and connects, and it is configured to conduct electrical power and for signal proportional to supporting power being transferred to the analytical equipment of machine.Supporting member and sensor in leg have electromagnetic interface, and the cable that measuring sensor transfers to supporting member from measuring sensor by electromagnetic induction from machine supply of electrical energy and signal proportional to supporting power by electromagnetic induction by electromagnetic interface connects.

In this device, except connecting, reliable cable uses an interface, and it is corrosion-resistant and insensitive to moisture, and also allows to change as being originally in installation position sensor or leg example.

Preferably, measuring sensor is connected with a circuit, and this circuit comprises the chargeable memory buffer for storage of electrical energy, and it is for supporting power measurement and transmission signal proportional to supporting power.

Preferably, analytical equipment coupling in machine, so that along with transmit signal proportional to supporting power offset in time for to the charge operation of memory buffer charging with for measure supporting force measurement move between switching, wherein switch on cycling time controllably or relevant with the size of the charged state of memory buffer or the measured value of supporting power.

Alternatively and equally preferably, the transmission of energy and can simultaneously carrying out to the transmission of the proportional signal of supporting power, its mode is: the signal carrier wave of alternating voltage of modulating transmits by electromagnetic interface.

Preferably, sensor is arranged in leg replaceably.Can in maintenance work, not need separation thus or reconnect emat sensor or mate for Matched measurement more, for example mate with other fields of measurement or add temperature survey coupling.

Preferably, leg has spherical dishes, and it is bearing on sensor, and wherein supporting member has link rod ball, and it is contained in spheroid dish.The part of the leg side of electromagnetic interface can sink to being arranged in the recess of spheroid dish and the part of the support component side of electromagnetic interface can sink to being arranged in the recess of link rod ball, makes these two parts contactlessly opposed each other.

Before other favourable expansion scheme of supporting power measurement mechanism, described and at length reference implementation form in this regard.

At another kind according in form of the present utility model, for measuring the supporting power measurement mechanism of the supporting power on the supporting member of the supporting structure of especially movable acting machine, there is at least one measuring sensor, it is connected and is used to form sensor with deformable body that can deformation under supporting power effect, and send signal proportional to supporting power, and there is the leg that contains sensor and be connected movingly with supporting member.Leg has for the storer of electric energy and transmitting set, and it connects and be configured to wireless mode to sensor and sends the radio receiver in machine by what detected by sensor to the proportional signal of supporting power.

In this form of the present utility model, can use multichannel, extendible system if desired, make the measured value notification analysis device of supporting power, temperature, charged state or function etc.This system can be reequiped very simply, because only need a lasting power supply in the control station of machine, it just had conventionally originally.

Preferably, for the storer of electric energy, be chargeable storer, and leg is provided with charging device, by charging device, can charge to storer.Can consider following solution: the storer that wherein can use not reproducible charging; Run duration grows to so that in the situation that suitable expense and protection of the environment send measuring-signal by the non-rechargeabel current memory of use with enough frequency under normal conditions.

Preferably, the radio receiver in machine is connected with analytical equipment, and this analytical equipment will be converted to support load to the proportional signal of supporting power signal.

Preferably transmitting set and radio receiver are respectively as transmitting set and receiver structure be configured to and communicate with one another.Preferably, transmitting set and radio receiver are configured to for by radio wave transmissions data, each other according to predetermined agreement coupling and check signal source with to the correct transmission of the receiver of machine.

Preferably, for the storer of electric energy, be connected with charging device, this charging device has for connecting the charging socket of current source or by the electromagnetic induction interface of electric energy transmitting contactlessly.Aftermentioned expansion scheme especially can be in dirty installation position environment without short circuit work because do not have electrical contacts to expose.

Preferably, leg has for monitoring the device for the charged state of the storer of electric energy, and it is configured to by transmitting set, the data about charged state be sent to the radio receiver of machine.

Leg preferably has the antenna of transmitting set, and it is arranged in recess and preferably with plastic pouring.

Preferably, leg side carrying thereon light-emitting device, preferred LED, it is controlled by transmitting set so that by light symbol display working condition.Light symbol can be by light color or luminous interval, especially continue light distinguishes with the flash of light with different frequency and preferably shows that different duties is as especially preliminary work, fault, radio contact the charged state of interruption, storer.

This expansion scheme tool has the following advantages: can remind the warning of the adventurous running status of acting machine to machine operator and the other staff that not necessarily see especially equally in pilothouse.

Preferably, radio receiver is placed in machine driver's control station and has screen, measured value is shown on screen and/or the value calculated by measured value as especially extension and the angle value of the permission of crane support the motion crane in the situation that.

Especially, light-emitting device and described function specifically also can be applied in other forms of the present utility model.

From the utility model, also to pay close attention to following by the problem about transverse force aspect shown in Fig. 2.

Utilizing supporting member lifting vehicle and when promoting load, vehicle frame 44, support 3 and supporting member 2 deformation, making to stand on the end of supporting member 2 on ground or leg in the horizontal direction will be away from each other on d, as shown in FIG. 2.But this motion parts prevents by the non-vanishing mode of the friction factor between ground and leg 2.Thus, form horizontal reverse stress between supporting member, it produces the moment of flexure theory all in by the parts of line of force process.

The problem of measuring technique is now, on the force direction that each actual force cell or power sensor are not only constructed it in force cell or power sensor tip, react, and for the force and moment that acts on it in every other direction, react more or less.For example in order to detect, utilize vehicle that supporting member supports or the centre of gravity place of crane, only vertically power, supporting power are important.

The horizontal force occurring in described application is in the above the relevant interference component that is the vertical power that will measure in measuring technique of the horizontal force on each supporting member especially.

Difficult is to find the suitable installation site of force cell on vehicle or crane.Around crane or lifting vehicle, service condition is usually severe.

Cable connects and sensor is exposed to dirt.In addition the heavy equipment that, supporting member is also exposed in machine and vehicle and next-door neighbour's surrounding environment in overhanging state moves and mechanical stress and the potential collision of generation.Thus, do not allow restriction or hinder security and ability to work.

The utility model provides described difficult solution.

Utilize the utility model, force cell is integrated in supporting member, makes it be integrated into securely in this structure and reliable signal is provided simultaneously.

Like this, force cell is configured in a kind of form of the present utility model, makes on its end that is easily arranged on support, stands less due to impact and Antagonistic Environment impact well that laterally force and moment causes, as moisture and dirt.

But force cell also can be integrated in the line of force of supporting member at another position, so for example at any part place of piston rod.

Because application as described herein is generally the application that safety is relevant, so in addition importantly, the feature in the measuring technique of force cell remains unchanged and the minimum requirements of functional safety is satisfied on long-time.

In addition, the vehicle of such outfit leg uses in the open conventionally.There, for example vehicular sideview in the sun, the leg on this side is heated, and other legs is in shade.Thus, can form the very big temperature difference, it can make measured deformation or the especially measured resistance value (being power) of strain in survey sensor distort.

Advantageously, force cell can comprise additional temperature survey, and it for example can carry temperature sensitive resistance like this, and it can realize the directly temperature compensation on survey sensor.Particularly advantageously, the sensor of carry load measuring resistance closely also has temperature measuring resistors.

Have many different vehicles, it has the mechanism that need to use leg.Therefore, on leg, also expect and different maximal support loads detected.In order to realize accurately and to measure in corresponding nominal load scope, force cell will be designed to, and it can be emitted in the signal of even variation in whole nominal load scope as much as possible.For this reason advantageously, sensor is not being set up the in the situation that conduction connecting and can be replaced.

In addition, for fear of deposit many different sensors (it mates for nominal load scope respectively), advantageously, use the deformable body of unique canonical measure element and sensor is nominal load commensurate in scope with measurement task on its geometry.

In the coupling aspect the configuration of deformable body, can calculate very well and also can manufacture, because preferably the diameter (diameter of cylinder) of tumbler is mated, this can easily and accurately realize in practice.

In another kind of expansion scheme of the present utility model, mate and be designed to unequally loaded, different sleeves is covered by standard deformable body, so described sleeve is less and can eliminate higher load like this by increasing xsect deformation.

In another expansion scheme of the present utility model, may be considered that, by force sensor integrated in the horizontal supporting structure of support, to improve the degree of accuracy of measurement result.For this reason, the measuring sensor form that sensor can connect with same deformable body and being for example installed in supporting structure by welding or being press-fitted, to measure supporting power.

This expansion scheme can realize by strengthening structure, and this enhancing structure is additionally applied on supporting structure and therewith and connects, and sensor is received as integrated component.

At this, advantageously, whole enhancing portion can be used as assembly and determined and test before it is arranged on supporting member.

For this reason advantageously, strengthen structure and limit and weaken around force cell, so that the line of force or load that the position that can realize the strain of maximum and restriction at this is located in measuring position in order to elimination, measurement.

Being matched with unequally loaded is to be for example constructed so that additional structure varying strength to implement, or weakening differently of restriction implemented.

In another expansion scheme of the present utility model, force sensor integrated is in the leg of the support plate of foot, supporting member under spherical link rod.Sensor is placed under spherical holding part for this reason, and this spherical holding part is convertible.

By thering are the different Plug Divisions of different bulb diameters, can promptly for corresponding lifting vehicle, mate.

Sensor can be power sensor, and its strain of recording on deformable body is length variations.This can be resistance strain gage, its monitor strain, or the film coupling, its strain under power impact, arching or distortion.At this, also can use optical means, particularly there is fiber, described measuring method can monitor strain.Generally speaking, different schemes is possible at this.

Another method for detection of supporting power can be hydraulic measurement element, and it is measured as the pressure of the closed piston chamber of pressure and is converted to power output.When measurement data is transmitted by radio, Power supply also can be by realizing vehicle mass in the situation of second utmost point by the one pole on vehicle or bipolar connection.

But sensor also can be implemented as movable power and measures axle, it analyzes the supporting power working of the protractile support of movable machine according to overhanging state or overhanging length or width and angle.At this, for example, the bending shaft obtaining or bearing, analyzed in the axial force at the support place of axle.

Power sensor can be also SAW sensor or with the sensor of RFID function, it encourages and send independently subsequently resonance response by ripple as oscillation circuit.For this reason, can need each leg to send together encoded address to prevent obscuring of measured value.

In the case, power sensor preferably can be connected by leg and its spherical link rod and be inquired about by wireless for example inductive.

For this reason, suitable transmitter-receiver device is integrated into the spheroid of leg and holds in plate, and it realizes the transmission of the transmission of measured value or the energy of driving sensor.

In another kind of expansion scheme of the present utility model, each power sensor and analytical equipment be by the transceiver communications that is arranged on its machine side, and this transceiver is by mutual transmitting and postback with checking algorithm and transmit in accordance with regulations in combination data.

Particularly advantageously, by leg, arriving the two-wire of the supervising device (analytical equipment) of crane (machine) implements, it bears Power supply, and wherein simultaneously measuring-signal with the clock control of analog or digital mode be modulated to service voltage or supply with on electric current.

Alternatively, connect five polar regions and be configured to CAN bus, or realize via a plurality of passages by radio.

When by wireless radio transmission, the demonstration in the lifting cabin on whirley can be reequiped especially simply, because slider contact site does not need.Only need current supply arrangement, and there is the analytical equipment of receiving element and display can simple refit, be placed in crane driver's the visual field.

Correct connection and installation be confirmed, be shown to light-emitting device on analytical equipment or on each support plate can on-the-spotly with visual manner.

For simple operations and sensor installation system, foot's plate utilizes the closure member sealing can screwing from top, or opened upper end and locking simply only, and otherwise during transportation at vehicle, tightens in charging and conveying arrangement.

In a kind of expansion scheme of the present utility model, force sensor integrated is in the piston rod of leg.

Accompanying drawing explanation

Referring to schematic figures, set forth in more detail the utility model.

In the accompanying drawings:

Fig. 1 shows in the supporting member on derrick car with front view;

Fig. 2 A shows support, and it has the deformations of schematic appearance and strengthens structure;

Fig. 2 B shows support, and it can pivot out around vertical axis from vehicle;

Fig. 2 C shows support, and it can pivot out around horizontal axis from vehicle;

Fig. 3 shows the leg with can the hydraulic pressure overhanging support He Xia foot place of sensor with sensor;

Fig. 4 A-4G shows the various electric coupling devices for sensor through leg;

Fig. 5 A shows with sensor element with for being matched with the sectional view of leg and the enlarged drawing 5B of sensor body of the sleeve of peak load;

Fig. 6 A-6B shows the leg that band is useful on the sensor Plug Division of different spherical link rods;

Fig. 6 C shows the leg with crane controller wireless connections;

Fig. 6 D shows the leg with crane controller dedicated radio link;

Fig. 7 shows the schematic sectional view in the piston rod of hydraulic cylinder with the leg of sensor;

Fig. 8 shows the derrick car with installable leg, and described leg sends to measured value in lifting cabin by radio; And

Fig. 9 shows a solution, and wherein power sensor is formed together with device for pressure measurement by piston/cylinder arrangements.

Embodiment

According to Fig. 1, rotating crane 1 (crane is the machine under the application's meaning) has basic framework or substructure 44, and it is fixed on and moves horizontally on lifting beam or support 3.Leg 2 is installed on support 3, and leg can limit and lift crane structure or whole vehicle.

According to hung load 5, the overhanging length of crane support (post 8B), the extension 8C launching, the deadweight of crane and the placement of counterweight 8A and with the overhanging length L of the support 3 of leg 2, obtain promoting the maximum load of load 5 before crane is about to topple over.

By analyzing the mode of the supporting power of all supporting members, approach or reach maximum load (also referred to as overload limit) and can show to crane driver.

For this reason, sensor is set in supporting structure.

According to Fig. 2 A, power sensor can be placed on different points in supporting structure.For example, in supporting member, the leg 2 in the region of ball 4 is strengthening on element 5 on support 3, or in the bracket roller axle 7 of support 3.The utility model can be applicable to, in these application, be preferably applied to the movable relative to each other application of sensor and analytical equipment.

Following solution has been shown in Fig. 2 B, and its medium-height trestle 3 can pivot out around vertical axis from vehicle.Support 3 may be embodied as power measurement axle around the axle journal 7 of its pivotable.In addition, other power sensors can be arranged on like that as described below in the region of ball 4 of leg 2 or be arranged in support plate 9 and in the manner described and be connected with the analytical equipment of crane.

Following solution has been shown in Fig. 2 C, and its medium-height trestle 3 can be driven and be pivoted out from vehicle by hydraulic cylinder 300 around horizontal axis.Support 3 and hydraulic cylinder may be embodied as power measurement axle around the pin joint 7 of its pivotable.In addition, other power sensors can be arranged on like that as described below in the region of ball 4 of leg 2 or be arranged in support plate 9 and in the manner described and be connected with the analytical equipment of crane.

Figure 3 illustrates two sensors, it can work redundantly each other on the supporting structure 6 with support 3 and leg 2, and has improved like this security of crane.

Supporting structure 6 consists of with vertical leg 2 support 3 of level substantially at this.Crane vehicle respectively has two such devices as shown in Figure 1 conventionally on two vehicular sideviews, on four supports 3, has four legs 2 altogether.

Such supporting structure has below only been described respectively, by structure supporting structure identical or radial configuration is placed on all the other vehicle points and is copied.

The first power sensor 10 is placed on spherical link rod 4 for this reason in foot, and support plate 9 holds this spherical link rod.Be fabricated to the hollow cylinder body of piston 11 movably leg 2 two-piece types.By at 2 times guiding hydraulic oil 13 of pressure P, piston rod 11 is moved, until support plate 9 contacts and lift crane with ground 12.

Power sensor 10 is at this for example by 14 contacts of spiral cable, and spiral cable is through piston/cylinder unit and preferably medially passes.So measuring-signal is conducted to crane controller or monitoring device of crane by the contact site 15 of sealing.

Equally likely, support 3 moves by piston/cylinder unit 16 with hydraulic way, this piston/cylinder unit is bearing in support 3, and this support 3 can stretch into or stretch out with respect to the crane substructure not being shown specifically here on roller 7 or sliding bearing plate 7B.

So support sensor 17 is preferably for example placed on support 3 by welding as the ingredient of plate 5.Around the recess of support sensor 17 by the line of force around or at leg sensor, concentrate and improve measuring-signal.

Be similar to the enforcement for leg 2, the cable 14B of support sensor 17 guides to crane controller through hydraulic oil with through piston/cylinder unit.In addition likely, cable 14B is electrically connected to the cable 14 of leg 2, makes cable 14B the measured value of the measured value of power sensor 10 and leg sensor 17 be guided to the analytical equipment (not shown) of crane 1.

According to Fig. 4, cable can differently be constructed for this reason:

Fig. 4 A shows cable and connects, and wherein cable screw shape ground forms, and clad material elastic recoil, and on its original shape scheduled justice, make always to attempt from this length, getting back to again its original shape when load alleviates.

At this; as pipe, (it is (not shown that it also may be embodied as draw-tube to envelope shape; referring to Fig. 7) play auxiliary and guiding function, wherein each end segments of draw-tube is fixed on cylinder body or piston rod and adjustable length protective cover forms around (automatically reverting to its original shape) cable of elastically deformable.

Fig. 4 B shows cable and connects, and wherein cable is wound rolling by unshowned device when load alleviates.This can be elastic pre-tensioning tight on roll device.

Fig. 4 C shows cable and connects, and wherein cable is by unshowned device indentation ground coiling.

Fig. 4 D shows cable and connects, and wherein cable is flexibly matched with length variations with simple (spiral) form of springs.Cable strengthens by metal or fibrous wadding or encapsulation object at this, and it is spiral-shapedly mated it as spring symmetrically with pars contractilis.

Fig. 4 E shows cable and connects, wherein cable accordion shape ground predefine film conductor or band conductor.For this reason, the printed conductor of insulation also can be used as film and is connected with the carrier material of spring, for example, by laminating method, be connected with printed circuit board material.

Fig. 4 F shows cable and connects, and wherein cable is comprised of each elastomeric spring folding element, once alleviate this connected load, spring folding element is inwardly rolled by pre-tensioner.

According to Fig. 5, force cell or power sensor arrangement are spherical link rod or the section of spherical link rod 4, and substantially antirust irony deformable body, consist of, the strain utilization that it causes by the power that will measure is adhered to resistance strain gage on deformable body or detects by the resistance of the strain sensitive with thin-bed technique manufacture.

For this reason, resistance can directly be placed on spheroid link rod, or is placed in sensor body 20, and it is connected with deformable body and preferred and its welding.When supporting power F is directed on web joint 21, sensor regions or the distortion of the similar load of sensor body 20 F ground, resistance distortion, and measuring-signal can be analyzed with crane controller for the load on spherical link rod.

At this, the strain of sensor device and appearance realized with mating by the configuration in hole 22 of the power of expectation.Sensor device further mates and is with peak load or the supporting geometry of crane, and the connection diameter 22 of the spherical link rod section of different sleeve 23A, 23B is connected with web joint 21A, the 21B mating in intensity.

By selecting sleeve and plate can change the rigidity of connection, the degree of strain of sensor regions can be mated according to load.

In order to realize higher functional safety, at Huygens's electric bridge that also can have two or more same way to connect aspect the wiring that is placed in the resistance in sensor body 20, in sensor body, its signal is analyzed each other separatedly and is evaluated in electronics comparator circuit.

In addition, the resistance relevant with temperature is located immediately in sensor body, can the impact of compensation temperature on measured value by it.

If spherical link rod 4 is constructed ordinatedly, for example, as shown at Fig. 5 B, when measuring resistance 24 was positioned at the measurement film 25 (it is the ingredient of sensor body 20) that is connected with spherical link rod when upper, by leg, be directed to the analyzable deformation in measuring technique that horizontal force in sensor body 20 makes sensor regions or sensor body.Therefore, the force cell for detection of the supporting power of the supporting member transmission by for carry load can be constructed so that its compensate for disturbances transverse force.Like this, this realizes especially in the following way: by resistance suitably (for example X-shape ground) be arranged in sensor body 20.

Force cell or power sensor have under supporting power and transverse force along the measurement section (in this case measuring film 25) or the deformable body that deviate from the direction deformation of supporting power, and force cell or power sensor form a part for supporting member together with measuring section or deformable body.In addition, a plurality of be arranged in the resistance measured on section (measuring film 25) securely with measure section and be connected, measure section demonstration reaction proportional to strain and preferably cancel each other out that it reacts with transverse force is proportional.

The elimination of reaction can be measured on section and/or realize by the measured signal of respective handling by measuring sensor (in this case sheet resistance) is arranged in suitably.

Fig. 6 (A, B, C, D) shows the foot's plate 9 for the supporting structure of crane, and it for example can be described and implement as the figure with reference to above.

According in the expansion scheme of Fig. 6, for the district 30 that holds of spherical link rod 4 constructing replaceably.Especially, sensor Plug Division 31 is provided with the face 32 that minute section is spherical for this reason, and the supporting power of its spherical link rod 4 that is D1 by diameter is directed on the power sensor 33 in leg 9.

According to Fig. 6 B, such sensor Plug Division 31 can with leg 9 in stationary installation 34 kaysers, and have that will describe after a while, only similar to the interface shown in linkage unit 35 at this, measurement data can be sent to crane controller or analytic unit by this interface.

The first power sensor 10 is placed on spherical link rod 4 for this reason in foot, and support plate 9 holds this spherical link rod.

According to Fig. 6 C, the sensor Plug Division 31 being connected with 10 effects of power sensor is provided with linkage unit 35, and this linkage unit is configured to transmitting set and preferably via antenna 37, measurement data is sent to analytic unit or crane controller by radio.Required Power supply can wirelessly for example be carried via inductive interface via receiving element 36.

Device 34 is for sensing Plug Division 31 is fixed on to leg 9, and device 38 in this case top hemisphere hull shape formula is used for leg 9 to be fixed on spherical connecting bar 4.

According to according to a kind of form of implementation of Fig. 6 D, such sensor Plug Division 31 is delivered to supporting power on double redundancy power sensor 10, and described power sensor is transmitted to biosensor analysis device SA by its measurement data.Biosensor analysis device SA wirelessly further offers transceiver 51 by measurement data from transceiver 50, and this transceiver 51 is as the receiver operation in inductive interface and be placed in spherical link rod 4.Transceiver 50,51 forms inductive interface together.

Under the category connecting, be integrated with coil system 52A, 52B, it is gone back electric energy transmitting and is used to 10 power supplies of power sensor.In this form of implementation, power sensor needn't doublely exist completely, and it can be only also single power sensor 10, and it is connected with corresponding circuit SA, so that by inductive interface 50,51 its measurement data of transmission.

The circuit SA being connected with power sensor 10 with coil system 52B also comprises the storer for electric energy, and its form is accumulator or capacitor etc.Electric energy can transmit by inductive interface 50,51, so that then driving force sensor 10 is measured and measuring-signal is processed into suitable signal and is input to interface 50,51 for transferring to analytical equipment or the coupling of machine.Thus, interface 50,51 for example can be alternately for transmitting energy or for transmission measurement value.Thus, can utilize the signal transmission form of simple twin-core cable and/or simplification to carry out work.

Another form of implementation is shown in Figure 7, wherein the integrated strong sensor 10 of leg 2.According to Fig. 7, power sensor 10 is interior integrated or be arranged on the upper end of inside of piston rod at leg 2.One section of piston rod 11 forms deformable body, is mounted with sensor (not shown) on this deformable body.Sensor example can have the form shown in Fig. 5 A, 5B.

Cable connects 14 and is received and guides in telescopic protection pipe 67, and is therefore subject to special protection in order to avoid damage.By pipe, guaranteed, cable connects and in guard system, loosely folds in order all the time or place and can not be jammed or push as electric signal.

Cable to power sensor 10 can be implemented as shown in Fig. 4 A to Fig. 4 G.

According to the expansion scheme of Fig. 7, also can change, capable sensor 10 is fixed on the section being connected with cylinder interior of piston rod 10.This layout tool has the following advantages: being connected electrically in cylinder interior and not having electric wire cable must pass piston to power sensor 10.

Another form of implementation is shown in Figure 8.Crane 1 has support 3 and leg 2.Support plate 9 is placed on leg 2 and has the Plug Division 31 of measurement, and it sends to the measured value of supporting power the operational window 40 of crane 1 by the antenna 37 being evenly integrated in support plate 9 to analytic unit 38.

Because measurement data is wirelessly by wireless radio transmission, especially in rotating crane structure situation, in the region being rotationally connected 60 of crane and framework 44, do not need other electricity to be rotationally connected.

Radio transmission system between leg especially can be designed as, and signal transmission is repeatedly verified two-wayly, thereby makes the signal transmission of launched signal safe especially.

In addition, by encrypting, can realize high precision, so for example Hamming distance is H=4.In wireless system, each transmits and receives unit and has clear and definite address, making not only can be associated with correct leg by correct measured value all the time, and can automatically identify by suitable device that corresponding correct support plate 9 is no to be mounted on correct leg 2.

If use same support plate on all legs, programing function is set, utilize it can in analytical equipment, determine the associated of leg and corresponding support.When not there is in accordance with regulations associated, corresponding Safety query can prevent/postpone/limit the operation of crane.Also possible that, leg is provided with the RFID chip as leg sign, and it comprises the sign for respective leg.After settling support plate 9, measure Plug Division 31 and wirelessly detect leg sign and register at the analytical equipment place of machine as the support plate of corresponding support.RFID chip and for example can be arranged on spherical link rod 4 or measure Plug Division 31 for the device of its detection, as shown at Fig. 6 D.

Preferably, can reequip whole system, analysis and Alarm Unit 70 that this system can be placed in by support foot plate 9 with in operational window 40 in the operator visual field form, and analyze and warn unit to comprise analytical equipment and radio company's welding system.Especially, support foot plate 9 has the Special electric stream supply device consisting of energy accumulator, and energy accumulator is chargeable by charging terminal 41, and this charging terminal also may be embodied as waterproof inductive interface.Analyze and warn unit only to need vehicle-mounted electric current, it conventionally originally just provided (vehicle-mounted socket) in operational window 40.

Alternatively, the measuring system of settling or foot's plate 9 have light-emitting device 39, and it shows with optical mode when true(-)running, arrangement and shielded wireless radio transmission, this system preparation operation.The optical display of light-emitting device 39 comprises light symbol, and it can be by light color or luminous interval, especially continue light distinguishes with the flash of light with different frequency and preferably shows that different duties is as especially preliminary work, fault, radio contact the low charged state of interruption, storer.

Once foot's plate 9 is correctly installed and/or is locked in the transportation and charging recess 40 of crane, the charging terminal on step plate 9 41 is connected with the charhing unit 42 on crane.Also possible that, foot's plate original position is recharged in Plug Division, this especially can realize by the portable unit that recharges, and it is connected with the charging terminal of the leg that will recharge.At this, waterproof is favourable with the connection of putting dirt as inductive is connected.

Fig. 9 shows a solution, it makes firmly sensor 200 measure support load, the pressure of the liquid of force sensor measuring in cylinder body chamber 202 and infer accordingly by piston rod 11 be applied to the coefficient measurement piston 201 in cylinder body chamber 202 on supporting power.For gaging pressure, working pressure sensor 91, this pressure transducer is connected with analytical equipment 93, and this analytical equipment has antenna 92.The measured value of pressure or the power value that calculated can be sent to by analytical equipment 93 demonstration or the analytical equipment (70 in Fig. 8) in the operational window of machine by radio signal.Preferably, sensor construction form is provided with temperature measuring equipment (not shown), and it determines fluid temperature, makes to consider this temperature when determining supporting power.

Preferably, measurement mechanism can be sent about correct installation or about being about to light signal or the conduct of overload the warning of the warning of collision is glistened by translucent cover plate 33.

The version of the leg version that is only power sensor different from all the other forms of implementation.Therefore, these implement also can be equipped with inductive interface or cable connects, this hydromechanical power sensor 200.

Claims (12)

1. for determining a measuring system for the supporting power on the supporting member of supporting structure, have:

At least one measuring sensor, it is connected with the deformable body of energy deformation under supporting power effect, and be used to form sensor, and send signal proportional to supporting power, and

Leg, it comprises sensor and is connected in movable mode with supporting member,

It is characterized in that,

Leg has for the storer of electric energy and transmitting set, and described transmitting set and sensor connect and are configured to wireless mode and send the radio receiver in machine by what detected by sensor to the proportional signal of supporting power.

2. measuring system according to claim 1, is characterized in that, for the storer of electric energy, is chargeable storer, and leg is provided with charging device, by charging device, can charge to storer.

3. measuring system according to claim 1 and 2, is characterized in that, the radio receiver in machine is connected with analytical equipment, and this analytical equipment is converted to support load by signal proportional to supporting power.

4. according to the measuring system described in claim 1 to 2, it is characterized in that, transmitting set and receiver are constructed respectively and be configured to transmitting set and radio receiver, communicates with one another.

5. measuring system according to claim 4, it is characterized in that, transmitting set and radio receiver are configured to for by radio wave transmissions data, each other according to predetermined agreement coupling and check signal source with to the correct transmission of the receiver of machine.

6. according to the measuring system described in claim 1 to 2, it is characterized in that, for the storer of electric energy, be connected with charging device, this charging device has for connecting the charging socket of current source or by the electromagnetic induction interface of electric energy transmitting contactlessly.

7. according to the measuring system described in claim 1 to 2, it is characterized in that, leg comprises for monitoring the device for the charged state of the storer of electric energy, and it is configured to and by transmitting set, the data about charged state is sent to the radio receiver of machine.

8. according to the measuring system described in claim 1 to 2, it is characterized in that, the antenna that leg comprises transmitting set, described antenna arrangement is in recess.

9. according to the measuring system described in claim 1 to 2, it is characterized in that, leg carries light-emitting device in side thereon, and it is controlled by transmitting set, so that by fluorescent tube symbol display working condition.

10. measuring system according to claim 9, is characterized in that, light symbol can be distinguished and be shown different duties by light color or luminous interval.

11. according to the measuring system described in claim 1 to 2, it is characterized in that, radio receiver is placed in machine operator's control station and has screen, the value that measured value is shown on screen and/or is calculated by measured value.

12. according to the measuring system described in claim 1 to 2, it is characterized in that, sensor is formed by deformable body, and described deformable body forms resistance strain gage as measuring sensor or forms together with resistance strain gage as the membrane component coupling, or

Wherein sensor as hydraulic coupling sensor, by the measurement piston working in cylinder body chamber, formed and wherein the pressure in cylinder body chamber as the measured value of supporting power, export, or

Wherein sensor as power measure axle analyze movable machine support the supporting power working and at the crooked of this analysis axis or in the axial force at the support place of axle.