CN100464955C

CN100464955C - Working tool with damped handle

Info

Publication number: CN100464955C
Application number: CNB2004800201310A
Authority: CN
Inventors: R·比尔格; W·斯米德; O·W·斯坦佐
Original assignee: Wacker Construction Equipment AG
Current assignee: Wacker Neuson SE
Priority date: 2003-07-15
Filing date: 2004-07-13
Publication date: 2009-03-04
Anticipated expiration: 2024-07-13
Also published as: DE10332109A1; DE10332109B4; CN1822925A

Abstract

The invention relates to a hand-held working tool, comprising a first unit, powered by a vibration on operation and a second unit (2) which may be displaced relative to the first unit (1). A vibration isolation device (3) is arranged between the first and second unit, comprising an actuator (4), for generation of a control force, by means of which the operational force acting in the working direction (A) between the first (1) and the second unit (2) may be at least partly compensated. The actuator (4) is pneumatically operated and comprises an air spring (11) for vibration isolation. A working piston (7) in an air spring percussion device on the working tool serves to supply compressed air for the air spring (11). Alternatively, the compressed air can be supplied by the oscillating relative movement between the first unit (1) and the second unit (2).

Description

The tool set that has damping handle

Technical field

The present invention relates to a kind of hand-held tool set (

), and a kind of device that is used for the vibration isolation of tool set handle.

Background technology

Hand-held tool set, especially boring and/or jump bit (hereinafter being referred to as jump bit), tamper or suchlike instrument have a vibrator usually, and it is used for being produced as the desired vibration of the desirable work effect of realization.For boring and/or jump bit, this is a percussion mechanism normally, can realize percussion to an instrument by this device.Certainly, this strong vibration should be as much as possible little for the operator's of hand-held this instrument active force.

Tool set also has a device usually, utilizes this device can produce vibration, impact or bump.Below such device is summarized and be referred to as " vibrator ".

Many such tool sets all are hand feeds, so the personnel that need operate can grip the handle of the required correspondence of this tool set.For realizing technical function, vibration that produces in the vibrator of tool set or impact will affact the operator by handle, and this not only makes us feeling under the weather, and long term can impair health.For this reason, need make every effort to keep the vibration of handle as much as possible little.

For this reason, people know that being provided with one between handle and vibrator vibrates kickoff mechanism (Schwingungsentkopplungseinrichtung).Such vibration kickoff mechanism is realized by means of driven spring-damping element usually.For example, can put into rubber element between handle and vibrator frees to reach certain vibration.Based on limited structure space, spring element only has very little spring deflection, and this has just limited the ability of handle vibration isolation.

On the other hand, accurately guide tool set in order to make the operator, spring element can not be done too softly.

People know: jump bit has the anti-shake system that has driven spring element (especially rubber bumper).In order to be issued to good vibration isolation, should make every effort to low spring rate and big spring deflection in principle, yet this structure space and operation for tool set is unfavorable in different service conditions.

What especially need take into account this is for example, for jump bit, to need to consider strong alternation thrust.On the one hand, according to different tool types or uneven material to be processed, this is caused by different counter-forces or recoil strength.On the other hand, according to the gravity of same-action not, thrust changes, and gravity depends on machine direction (level, upwards), and different instrument weight downwards.

Form suitable spring element and often have variety of issue, suitable spring need be born all duties that can expect, the bandwidth that especially all possible thrust is calculated.

In DE 196 46 622 A1, a tool set that is contained on the handle has been described.This handle is by the compensating element, damped vibration on one's own initiative of an ACTIVE CONTROL or adjustment, and wherein, this compensating element, produces the power or the motion of a compensation according to the vibration that is transferred to it after producing in the instrument.By this compensating action, widely balance the vibration that produces in the instrument, like this, the vibration that is attached in the handle on the compensating element, has been eliminated basically.Certainly, the cost of this type tool on structure and control technology is not inappreciable.

Described a manual instrument in DE 101 00 378 A1, this instrument has a vibrator and and is arranged in isolation mounting between vibrator and the handle.This isolation mounting has an executive component, and driving force is compensated with an adjusting power at least in part by this executive component.Wherein, this adjusting power does not rely on physical presence to a great extent and wants segregate vibration.Vibration itself by one that be arranged in parallel with executive component, have relative soft characteristic spring element and compensate.In described tool set, executive component itself does not have the function of vibration damping.On the contrary, it guarantees that the duty (that is, its bias voltage) of spring element is in the scope given in advance all the time, and like this, spring element can compensate the vibration of adjoining.The adjusting power of executive component is automatically adjusted according to the driving force, the especially operator's that act on from the outside thrust.Thus, we can say that it is the vibration isolation of " half initiatively ".This executive component can be electric, electromagnetism or hydraulic actuator, and this requires a sizable constructional expense.

Can know a kind of device that is used for the vibration isolation of lathe handle from DE 101 58 266 A1, handle is connected with the shell of lathe through at least one spring in this lathe.By means of an executive component that acts on spring, distance between handle and the lathe shell is not relied on act on the operating physical force on the handle and keep almost invariable.This executive component has a push rod, and this push rod is removable by means of electromagnetism, hydraulic pressure or pneumatic driving.

A kind of hand tools that has a vibrative transmission device has been described in EP 0 206 981 A2.Admit one and to be provided with one on the shell of transmission device and to be parallel to the principal oscillation axle and to be limited between two stop parts movably handle.The stop part of the one handle of arranging along this hand tools direction of feed is configured to electromagnet, and it does not rely on the position of handle with respect to shell, not only to handle but also to the power of the constant rule of shell effect one.Like this, just can realize the isolation vibrated.

Summary of the invention

Task of the present invention be to construct a kind of have semi-active vibration-isolating (semi-aktiver Schwingungsisolierung), constructions cost can reduce to minimum hand-held tool set.Another task of the present invention is tool set is provided a device that is used for the handle vibration isolation, utilizes this device can guarantee also that in different duties the reliable and simple vibration that realizes handle frees.

According to the present invention, this task can be solved by following hand-held tool set.

One hand-held tool set has an isolation mounting, this device between one around the first module and of vibrator with respect to first module at least along operative orientation movably between Unit second.The member of this isolation mounting is one to be used for producing the executive component of adjusting power, utilizes this adjusting power can partly compensate an operating physical force (for example thrust) that applies along the operative orientation between Unit first and second at least.Executive component is operated with Pneumatic method.

This shows that pneumatically-operated executive component is with respect to having very big advantage for the described operation principle of executive component among DE 101 00 378 A1.On the one hand, do not need the medium (for example hydraulic oil) that adds.Whenever available with sufficient amount air as medium is, and can spend special sealing expense.It is also not serious to leak.On the other hand, regulate expenditure reduces widely with respect to executive component electric or electromagnetism.Thus, by contrast, the energy consumption of electric executive component is quite high, because executive component must react apace, this has only by the corresponding power that supplies just possible.

For conceptive with in the impact pneumatic pick of a band spring, form especially but do not think that here the air spring of further understanding differentiates, and can be called handle-air spring (Handgriff-Luftfeder) here.This handle-air spring changes by different charge of air, can regulate thus.Especially, can change air spring interior pressure and/or volume of air.Executive component constitutes a pneumatic spring that has an adjusting device basically thus.It changes inflation with compressed air for handle-air spring, so also can change the spring performance of handle-air spring.

One air spring has the spring characteristic curve that goes forward one by one according to principle.In other words, originally spring has a low relatively spring constant, so balance vibration well.The power (operating physical force) that only acts on air spring when obviously improving spring rate just improve, so the air spring hardening.Thus, Unit second (for example one handle) avoided fully being pressed on the first module (for example, around the shell of vibrator), so that vibration can almost unhinderedly pass to Unit second.

The progressive nature of air spring can be adjusted in the corresponding way by a suitable spring-adjusting device that will be described below.

As the state of the getting in touch present technique description done and hereinafter also will elaborating, the top priority that belongs to executive component is the operational forces that acts between first and second unit of compensation, so that real vibration isolation can be born by a spring element that is parallel to the executive component layout.Yet, because executive component according to the present invention is pneumatic gearing, so, itself have good spring performance and can be used as vibration isolation equally according to the compressibility executive component of air.Based on the Incoercibility of hydraulic fluid, a hydraulicdriven executive component can not be fulfiled such vibration isolation.Also seeking electronic executive component reacts on the skew that causes of vibration and stops a spring action always.

In of the present invention one particularly preferred embodiment, tool set relates to a drill hammer and/or jump bit (hereinafter being referred to as " hammer ").Unit second carrying one handle, the operator can guide and grip tool set on this handle.Be provided with a known air spring impactor in first module, it has one by motor-driven drive piston, is used for driving an impact piston (Schlagkolben).Constitute an air spring between driven plunger and impact piston, it is delivered to impact piston with the motion of driven plunger, and impact piston knocks again on an instrument.According to the present invention, be used for producing compressed-air actuated driven plunger and be configured to executive component is fed.

In this embodiment, the further advantage of pneumatic apparatus clearly.Although only be used for the transmission impact piston in known impactor, the drive piston of this impactor has been configured to be used for producing compressed air.According to the present invention, drive piston has one second function now, that is, and and for executive component produces compressed air.Yet, because drive piston here simply mode use, so do not require and be useful on the additional member that produces pressure medium, for example, hydraulic pump or suchlike member.When drive piston moves backward, it make because of impact piston forward the air that is extruded of transmission can be used as compressed air and guide executive component into.

At this moment, come the compressed air reservoir of using charged air pressure if executive component has one by drive piston, then it shows especially advantage.This compressed air reservoir not only serves as the compressed-air actuated warehousing storage of executive component, when needed can be from wherein taking out compressed air, and can guide compressed air into executive component.In addition, this compressed air reservoir also can make drive piston be able to equilibrium according to the compressed air that its reciprocating motion is directed.

In of the present invention one special embodiment, executive component has compressed air reservoir, a valving, handle-air spring and one handle piston (Handgriffkolben).Wherein, compressed air reservoir is connected with handle-air spring through valving, and handle-air spring acts on the handle piston that links to each other with handle.The core of executive component is made of handle-air spring.According to circumstances, be filled in handle-air spring from the pressure of compressed air reservoir, handle-air spring places on its handle piston that loads, and the handle piston complementally is connected with handle shape again and therewith motion.At this moment, valving is guaranteed only to arrive in handle-air spring from compressed air reservoir with desired air supply.

It is favourable that valving is constructed in this wise, promptly, when the handle piston dwindled the volume of handle-air spring with the degree of a regulation, compressed air then can be introduced in handle-air spring from compressed air reservoir, so that reach the size of the regulation of handle-air spring volume once more.When operator's moving handle and resist the active force of handle-air spring and the moving handle piston during with the operational forces pressing handle that improves.According to the compressibility of air, the volume of handle-air spring can dwindle, till the minimum limit value that finally reaches regulation.In addition, valving is opened being connected between compressed air reservoir and the handle-air spring, to improve the air pressure in handle-air spring.Its result increases the power act on the handle piston, lays equal stress on and resists the effect of operational forces and clamping piston.When system is adjusted accordingly, guarantee that thus handle changes its relative position with respect to the first module with air spring impactor hardly.

If valving also has an outlet valve, then so add and conform with application target, like this, when the volume of handle-air spring surpasses the maximum of a regulation based on the displacement of handle piston, can from handle-air spring, emit compressed air.

When the operator at first with big operational forces be pressed on the handle, then because of the operator need mention this tool set when operational forces is finally recalled, promptly above-mentioned situation can appear.Its result, the high air pressure in handle-air spring further outwards presses against on handle piston and the handle, when newly placing tool set with less operational forces, so especially can cause can not producing vibration isolation in the working range of the best.

In order to stop this situation that outlet valve can be set, when handle-air spring reduces based on operational forces and moving handle piston and when increasing the maximum that surpasses regulation thus, this outlet valve can be opened the outside connection of handle-air spring.

The realization of the last described embodiment of the present invention is not only pure machinery and (electromechanics) that be machinery-electronics.

In the scheme of machinery, valving preferably is coupled to the handle piston.According to the pressure that loads by handle-air spring, this handle piston is removable between two extreme positions.For these two extreme positions, piston position defines like this: it is corresponding to the minimum of a value and the maximum of handle-air spring volume.Within this value, compressed air neither enters handle-air spring and does not also flow out handle-air spring.Yet, in case surpass one of two limit values (maximum or minimum of a value) according to the operational forces handle position of piston that changes, the valving valve opening at that time to be included into then, promptly, not that an inlet valve is exactly an outlet valve, the former forms one and is connected between compressed air reservoir and handle-air spring, and the outside discharges compressed air of the latter.In order to realize this point, valving has the access road of the correspondence that is used for inlet valve and is used for the exit passageway of outlet valve, and they open or close according to the handle position of piston.Passage and its close or opening mechanism with simple mode and handle piston in combination.

In the scheme of electromechanics, if a sensor is set then particularly favourable, utilize this sensor can determine the relative position of Unit first and second, especially admit impactor and its transmission main shell the position and with respect to the position of its movable handle.The layout of sensor should make sensor can grasp best relative position point between two unit at least.

Be preferably, sensor is connected with a controller with valving, wherein, valving is controlled by this controller, so that handle-air spring occupies such compressed air state, that is, the relative position of Unit first and second of being grasped by sensor remains in the oscillating region of a regulation.This oscillating region for example can be defined by above-mentioned maximum and minimum of a value for handle-air spring volume.This control monitors relative position between first and second unit by means of sensor, and operates corresponding precautionary measures by means of valving when surpassing the oscillating region of regulation.On the one hand, can make compressed air from compressed air reservoir in inlet valve injects handle-air spring.On the other hand, this control also can make handle-air spring through the outlet valve release.

In of the present invention one particularly preferred embodiment, arrange a spring assembly at the executive component that is parallel between first and second unit.This spring assembly can have the spring characteristic curve softer than executive component.

Perhaps, spring assembly also can have such spring rate, that is, its size should make motion present the amplitude of a vibration by this spring assembly at least, and the obstruction of spring assembly do not occur.

Active force between first and second unit is made up of two parts basically: on the one hand, effect be operational forces, it is pressed in handle and the application of force from the outside by the operator basically.This operational forces is superimposed upon on the power that produces by exciting in the first module.By structure according to the present invention, this operational forces also can fully be admitted by executive component and be compensated, and thus, executive component has rigidity " zero " or a very little rigidity ideally.The very little raising that acts on the power on the executive component in low-frequency range can cause executive component-tappet displacement, and originally executive component need not to resist a reaction force that improves.Just can increase the power of executive component when only surpassing in the limit value position.

This is also the superposeed effect of spring assembly, this effect has power or the path changing (Weganderung) that causes by vibration amplitude.Vibration amplitude is not subjected to or is subjected to hardly the influence of operational forces again.Therefore, spring assembly must have a spring rate, the phenomenon that does not occur blocking so that can fully admit vibration amplitude, that is and, spring assembly is not compressed in corresponding stop part is come in contact, and stops spring to be compressed further.Because the vibration amplitude of Chu Xianing is known in advance basically at work, spring assembly can be done corresponding design.

In addition, should make the rigidity of spring assembly as far as possible little, so that realize a soft especially elasticity.

Thus, executive component can above-mentioned mode compensate act on from the outside on the tool set, the operational forces between first and second unit, thus, it is inappreciable that operational forces makes the distortion of this slinky spring device.In addition, spring assembly is suitable for compensating the vibration of the high frequency that produces by the vibrator in the first module, thus, Unit second basically with vibration isolation.

Spring assembly must be no more than total number range of conceivable operational forces and be out of shape, and this can cause the member length of spring longer according to soft spring characteristic curve for this.On the contrary, can be according to the compensation of operational forces, must prepare on a relatively little working range, to work for the relative motion between first and second unit by the executive component spring assembly, although so that its soft spring characteristic curve of spring assembly still can be configured to short length.

In an advantageous further development, the adjustment power that is produced by executive component changes circularly, wherein, causes the change with same frequency, and drive piston moves along with this frequency.The vibration that produces in the air spring impactor by drive piston forces has identical frequency exactly, and drive piston is also with this frequency movement.Correspondingly, the frequency for the treatment of vibration isolation is stipulated by the motion frequency of drive piston.When executive component is now worked with identical frequency, compensate the vibration that causes by drive piston by executive component panting action in a certain way.

With the motion of drive piston and the relevant phase shift that may require of adjustment work of executive component, the suitable coupling of intermediate switch that can be by valve in the valving and compressed air reservoir solves.For example, after impact piston loaded and implements to impact by impact piston in the backhaul process, drive piston can be delivered to air pump in the compressed air reservoir.The valve between compressed air reservoir and the handle-air spring is opened in percussion that realizes in next circulation and the vibration that causes thus, so that improve the pressure in handle-air spring, and the effect that improves power thus.In the new backhaul of working piston, emptying handle-air spring and compressed air reservoir is filled again.This embodiment of the present invention makes that compensating vibration effect not welcome on the handle deftly and reliably becomes possibility.

Replace the above embodiments, in another embodiment of the present invention, the maximal regulated frequency of executive component is less than the frequency of the vibration that produces in the first module, also especially less than the motion frequency of drive piston.Thus, guarantee that executive component only compensates the operational forces by the outside effect, yet, vibration do not resisted on one's own initiative.Replace above-mentioned mode, vibration is compensated by the slinky spring device, or also can be compensated passively by executive component according to the compressibility of air.

In another embodiment of the present invention, be provided with one and drive and the compressed air generation device of transmission by tool set, it does not rely on the intrinsic work functions of tool set (Arbeitsfunktion) and produces the compressed air that is used for executive component.For example, a compact spiral formula compressor is suitable for this.The adjustment power of executive component should be adjusted in this wise: guarantee to make fluctuation range that cause by different operating power, the relative position between Unit first and second less than another fluctuation range, this fluctuation range is in same different operational forces but does not have the fluctuation ranges that relative position reached that cause, between Unit first and second under the compensating action of adjustment power of executive component.In other words, Unit first and second are moving relative to each other in sizable scope under the effect that does not have executive component.To this, executive component guarantees that this fluctuation range is as far as possible little, so that reach most probable vibration isolation by means of parallel connected spring assembly there.

Therefore, the pneumatic apparatus according to a generation power of the present invention is described below, it is equilibrated at one and determines temporal average thrust as the horizontal adjusting process.Real vibration isolation realizes by following method: be not a spring performance by means of the mattress in handle-air spring, have the passive spring assembly realization of enough low spring rate exactly in addition by means of parallel connection.In other words, smooth spring characteristic curve thrust for alternation in vibration processes is mobile like this, so that vibration is in the ideal case around fixing point vibration.Although below described a semi-active vibration-isolating basically, but it can consider dynamo-electric variant form in particular, also can reach a compensation of active fully in principle identical construction mode, wherein,, then also higher based on switching frequency for the requirement of sensor, controller and valve improving.Conversely, the requirement for member in semi-active vibration-isolating is obviously lower, because real vibration isolation result is passive.

The characteristic of the power of executive component and passive spring assembly, the former also can be made of a plurality of little executive components in addition, and the latter can have a plurality of spring elements equally, both adjust mutually so that at least Zui Da conceivable operational forces can be compensated.On the one hand, can compensate have very slinky spring characteristic, have the real strong executive component of a spring, and on the other hand, the spring that a rigidity is big really might be configured to a more weak executive component.

It is big as far as possible to make every effort to handle-air spring because the motion by handle then the relative change of volume is less, thus, effectively power almost keeps constant.

Operating pressure when the piston area of handle piston is enough big in handle-air spring can keep very low.Thus, the change of air spring rigidity also keeps very little with respect to the change of operational forces.

According to the present invention, task of the present invention is also solved by the following device that is used for vibration isolation.

The device that is used for vibration isolation have a vibrator and with respect to vibrator along principal direction (for example, the operative orientation of tool set) handle apparatus movably.One vibration kickoff mechanism is set between vibrator and handle apparatus, and it has a spring assembly, and a major part of the power that acts between handle apparatus and vibrator is transmitted through this vibration kickoff mechanism.In addition, the vibration kickoff mechanism also has a spring regulating device, it acts on spring rate and/or the initial stress that curable grip on the handle apparatus changes spring assembly according to the power, the especially operator that act on along principal direction along principal direction between handle apparatus and vibrator.

Owing between power in the spring assembly and the path clear and definite relation is arranged, therefore, also can use a position (relative position) as regulating parameter.

In order to reach good vibration isolation as far as possible, make every effort to use soft as far as possible spring basically, also promptly have the spring of low rigidity.Yet slinky spring also has shortcoming, and less power just can make spring that very big distortion takes place.For tool set, this just means that if the spring of Bu Zhiing has a soft spring characteristic curve, then handle apparatus will move bigger distance with respect to vibrator therebetween.Yet this can bring shortcoming in the guiding process, and requires to provide a structure space that can not provide usually.Especially, tool set obviously strengthens along the structure length of principal direction.

One spring (being the big spring of rigidity) with hard spring curve but allows minimum structure space.Simultaneously, the vibration of vibrator is but just separated by handle by halves.

Up to now, in the state of present technique, also only may seek a kind of compromise between hard and the slinky spring elastic curve for spring assembly.The present invention now can accomplish, by means of spring-adjusting device, spring rate or also can replace or replenish initial stress with spring assembly and can adapt at that time external condition, especially Zuo Yong power, and adjustment spring performance is so that can utilize the spring deflection of the permission between handle apparatus and the vibrator and the relative displacement of permission.

The power that loads by the operator in a low-frequency range, just relatively slowly change (if situation is like this really).Even the shock loading by operator effect is also in low-frequency range.

In contrast, the vibration that is produced by vibrator in the tool set is a high frequency.To do not grasped by the variation of vibrating the power that between handle apparatus and vibrator, causes by spring regulating device.Spring regulating device only goes out reaction to gripped or compressed the masterpiece that tool set causes by the operator.

Thus, spring assembly is adjustable to a soft as far as possible elastic curve or low prestressing force basically.Mobility between handle apparatus and the vibrator, the permission of defined on the structure then can be used as the vibration path and fully is utilized, so that balance vibration.According to the structure of spring assembly, can influence spring rate by changing initial stress or elastic curve (in air spring, changing air capacity) on the corresponding work point.

Yet, when the operator acted on handle apparatus and pushes tool set thus with bigger curable grip, the danger of handle apparatus contact vibrator can take place.In the immovable situation of the rigidity of spring assembly, in any case, be used for vibration isolation and the vibration path that provides more and more is restricted.This is replenished by spring regulating device, and handle apparatus produces displacement with respect to vibrator so that handle apparatus rests in the predetermined assigned position in the situation of the zero position of operator's static action curable grip and vibration.

When the operator with bigger when defeating tight handle apparatus spring regulating device improve spring rate so that with enough spring force compensating operation persons' active force.Thus, handle apparatus rests in the position of regulation (except the static(al)).When loading with vibration, handle apparatus can move in predetermined working range with respect to vibrator, because be that the variation of high frequency of the power of condition is regulated with the vibration.

Preferably, by the acting in conjunction of spring regulating device and active force, the relative position of handle apparatus with respect to vibrator remained in the working range of being scheduled to.Spring regulating device guarantees that thus relative position rests within this predetermined working range all the time.That can avoid extreme position in this way and take place between handle apparatus and vibrator by contact contacts, and vibration this moment can be delivered on the handle apparatus fully.

Preferably, the spring regulating device stress diagram also remains on the assigned position in the working range handle apparatus basically when it changes curable grip, and it is corresponding to the predetermined relative positions between handle apparatus and vibrator.

Particularly advantageously be, if assigned position simultaneously corresponding to a centre position of working range, then the move distance through substantially the same length moves before and after extreme position or end position along principal direction handle apparatus from middle position.Like this, handle apparatus can vibrate symmetrically with respect to the centre position, and thus, the vibration that is produced by vibrator is compensated.

In of the present invention one particularly preferred embodiment, spring assembly is operated by spring regulating device so that spring assembly has the rigidity that has improved in idle running, and the active force in described idle running between handle apparatus and the vibrator is lower than the limit value of regulation.The result shows: special jump bit has a kind of tendency from the placement location tripping when being placed into a new bore position.When spring assembly has a soft spring curve, but the certainty of the tool set difficulty that becomes in principle, and this also impels tripping.Yet, have when elastic device under the situation of the rigidity that has improved, in operator's all one's effort also of no use, promptly used when also the active force below prescribed limits compresses place tool this tool set to hold especially steadily.

Yet, in case it is in service and gripped with corresponding higher curable grip by the operator that tool set changes normal work over to, and curable grip surpasses the limit value of regulation, then can reduce the rigidity of spring assembly so that handle apparatus can be positioned at the desirable assigned position of tool set by spring regulating device.

Begin tool set when also being in the idle running in the course of work, spring assembly is rigidity very, but so that can reach a good certainty.Compress tool set and wish that carrying out the transition to spring rate of the operating moment of work from idle running reduces the operator, so that reach the vibration isolation of improvement.Spring rate is too low then, because necessary compensating operation person's thrust.Correspondingly, in the work certainty of guaranteeing that tool set is good in service.

In of the present invention one particularly preferred embodiment, spring assembly has an air spring that acts between handle apparatus and vibrator, and it preferably obtains air from an air pump.

This air pump can be driven by a drive motors of tool set.For example, air pump can connect with a fan that is used for drive motors or arrange as additional air pump element.

Air pump (stellvertretend) vicariously has many other possibilities, so that constitute an air pressure generation device, utilizes this device the air of low pressure can be introduced in the air spring.When hereinafter correspondingly mentioning an air pump, an air conveying arrangement or air pressure generation device also usually are set this moment.

In of the present invention one particularly preferred embodiment, air pump is driven by the relative motion of the concussion between handle apparatus and vibrator.Based on the motion that the desired relative motion regulation one of handle apparatus vibration isolation drives, it can be used in an advantageous manner fully for air pump.

For example, air pump has a pump chambers that is provided with between handle apparatus and vibrator, and its volume constantly changes owing to the relative motion of concussion.Air pump also can be arranged between vibrator and one the 3rd quality.When the volume of pump chambers becomes big, air through one first check-valves can from around be injected in the pump chambers.Air is transferred in the air spring chamber from pump chambers through one second check-valves, when the volume of pump chambers is done corresponding relative motion and when diminishing, formed an air spring in the air spring chamber at handle apparatus.By the effect repeatedly between first and second check-valves, guarantee to flow in the air spring from air pump once injection air-flow time averaging, substantial constant.

Spring regulating device has a valving, regulates according to the relative position of handle apparatus from the effluent stream of air spring by this device.The rigidity of spring assembly is adjusted by the adjusting of this effluent stream.When the air that flows out from air spring during greater than the air introduced by air pump, spring rate reduces.On the contrary, by adjust effluent stream make its less than flowing into air-flow so that on summation, there are more air to inject in the air springs, can improve spring rate thus.

In of the present invention one particularly preferred embodiment, valving has a valve openings, when handle apparatus further away from each other during vibrator this opening can open.Thus, can flow out from the air of air spring, like this, spring rate descends.When operator's thrust did not have great changes, this caused handle apparatus to move near vibrator.When handle apparatus is crossed the assigned position of working range or centre position and during near vibrator, valve openings is closed again at least in part.Thus, improved the air pressure in the air spring, become rigidity more of air spring.Correspondingly, handle apparatus can be no longer near vibrator.Sometimes, handle apparatus even by the air pressure in the air spring that more and more has been enhanced and pushed back, like this, it has occupied desirable assigned position.

In another embodiment of the present invention, spring regulating device has a valving, and the inflow air-flow that flows into air spring by this device is regulated according to the relative position of handle apparatus.The air-flow that flows out from air spring keeps constant basically.Its result, the air pressure in the air spring is to adjust as above-mentioned similar fashion.

Self-evident, combined solution also is possible, wherein, not only injects the air-flow of air-flow but also outflow and all can adjust.Yet, need determine here which air stream more conforms with purpose actually, and this can improve the expense of regulating under certain situation.

In another embodiment of the present invention, the raising of pressure is not achieved by blanketing gas amount in the spring volume of air spring, but realizes by reducing volume under constant gas flow.

For example, the adjusting task of finishing by an executing agency can realize like this: a fluid (separating by the volume of air that a film or a piston and air spring are original) can flow into or a hollow space of outflow and air spring coupling.Perhaps, a piston or a bellows wall can move by a Mechanical Driven, change the volume of the air capacity in the air spring thus.The gas compartment of air spring is sealed in this case hermetically.Therefore, gas compartment also other gas outside the available air fill.For example, in adopting monoatomic gas (inert gas), adiabatic loss is less, like this, and less the warming of " air spring " (preferably being called " gas spring " here).Recommendable at this is that spring is filled with helium, neon, argon (cost is low) or krypton.

For the situation of this confining gas volume, its pressure can change from the outside in aforesaid mode, and title described here " air spring " also should comprise the gas spring of filling with other filler outside the air.Therefore, " air spring " this title is only used for simple understanding, can not be confined to following understanding but fasten in this pass,, is interpreted as that the spring that has air only fills that is.One air spring means gas spring equally on this meaning.

Handle apparatus can have one at least, but also can have two or more a plurality of handle.

In a preferred embodiment of the present invention, an elastic bolster guide spare is set between handle apparatus and vibrator.When the rigidity of spring assembly is not enough, at least a portion of transmitting active force between total force handle apparatus and the vibrator can be through this stop part transmission.This stop part is corresponding to the spring element (for example a rubber spring or a foam element) of classics.Yet stop part only transmits the power of a direction.Thus, can guarantee the operator compress or curable grip in case of emergency can directly be delivered to vibrator through stop part from handle apparatus.Elastic bolster guide also can (although less) vibrates and frees in this case.Self-evident, one second stop part also can be set accept in opposite direction power, especially suddenly lax following time under the effect of base that the complete instrument person of being operated unloads soon or supporting in thrust.

Tool set involved in the present invention (especially jump bit) is often used (for example, in dismounting work) in dusty environment.Therefore, filling air spring institute inhaled air should purify by a filter at least.Owing to there is big dust share, estimate that the very fast meeting of this filter is blocked, so in for obstruction that sucks air-flow or situation that chokes do not have enough time maintenance, filter also can cause bigger amount of dust to be passed through.In this case, should be taken into account wearing and tearing of accelerating, especially based on the relative motion of passing.Therefore, be preferably,, can utilize once more for filling air spring once more therefrom then when the air that flows out from air spring is collected in a chamber that continues sealing for example in bellows or the filter bag time at least in part.Can in this chamber, assemble then from the opening of air spring outflow and the suction opening of air pump.

In another preferred embodiment, the air that is used for air spring is correspondingly drawn from the air air accumulator.When the air that flows out from air spring is back in the air air accumulator, its advantage there is especially this moment.This means: before the air pump of air under excess pressure flowed in the air spring heavily again, air was cushioning as obtaining in the air air accumulator of intermediate receptacle.Like this, be used for the air and the ambient air maintenance exchange seldom of the regulation of air spring, so that will reduce to minimum by the pollution that dust causes.Reach a closed basically air circulation thus, have only this moment the inevitable leakage loss of great majority just must be compensated from the outside by fresh air.

For example, the chamber of a vacuum, especially bellows or air bag can be suitable as air air accumulator or intermediate receptacle, and it can adapt to the volume of the air capacity that requires.

Description of drawings

Below will be by means of accompanying drawing, according to example describe in detail the present invention above-mentioned with other feature.Wherein:

Fig. 1 illustrates the side cross-sectional, view according to the signal of tool set of the present invention;

Fig. 2 illustrates the tool set of Fig. 1, and it has the impactor of broken section and according to executive component of the present invention;

Fig. 3 illustrates through sectional view that amplify, among Fig. 2;

Fig. 4 is the sectional view that the amplification of another embodiment is shown; And

Fig. 5 illustrates a schematic section by a tool set, and this tool set has the device that is used for the handle vibration isolation according to of the present invention.

The specific embodiment

Fig. 1 constructs for illustrating for example according to the principle of tool set of the present invention with boring and/or jump bit.One first module 1 and one second unit 2 are connected to each other through an isolation mounting 3.

Isolation mounting 3 has an executive component 4 and a spring assembly 5.

In addition, be furnished with a plurality of director elements 6 between first module 1 and one second unit 2, they should avoid the crooked of two unit 1,2.Director element 6 can be made of rubber or plastics, helps vibration isolation thus equally.

Therefore (be not shown specifically) arranges a drive motors in a known way in first module 1, and this motor moves a drive piston 7 (among Fig. 2 as seen) by a bent axle to and fro.Before this drive piston 7, promptly arranged a not shown impact piston along operative orientation A.Motion by drive piston 7 forms an air spring 8 between drive piston 7 and impact piston, this air spring promotes impact piston again so that impact piston knocks a unshowned in the drawings instrument or is inserted on therebetween the tup.The air spring percussion tool of this type of function is known, thus this further set forth become unnecessary.

One handle 9 is configured in the rear end of second unit 2.

Because Fig. 2 and 3 relates to same diagram basically, so they will be described hereinafter in the lump.

Executive component 4 has a compressed air reservoir 10, one handle-air spring 11 and one handle piston 12.The member of executive component also has a valving, and this valving comprises an inlet valve 13 and an outlet valve 14.Inlet valve 13 and outlet valve 14 are made up of the groove that a milling is gone in the cylinder basically, and the cylinder face of a sealing is relative with this groove.Its function also will elaborate below.

In addition, compressed air reservoir 10 is equipped with an inlet non-return valve 15 and an outlet non-return valve 16.

Handle piston 12 shape complementarity ground vertically is connected with handle 9.For the possible concentricity of balance, lateral movement or angular error, the rubber or the foam element 17 of an annular is set.Under any circumstance, guarantee that the axially-movable of handle piston 12 is delivered to handle 9 exactly, vice versa.

Set forth its functional mode below:

At work, when operative orientation A travelled forward, drive piston 7 was from every side in a check-valves 18 sucks air one rear chamber 19 at drive piston 7.When the contrary thereafter operative orientation A of drive piston 7 moves backward, air from rear chamber 19 in inlet non-return valve 15 is pressed into compressed air reservoir 10.When next drive piston 7 travelled forward heavily again, then air was sucked once again through check-valves 18.If overvoltage occurs in the compressed air reservoir 10, then overvoltage can discharge through outlet non-return valve 16.

If the user compresses jump bit to a rock to be processed on handle now, then handle 9 moves forward along operative orientation A with respect to first module 1.Thus, the handle piston 12 that has a push rod 20 deeper pushes in the compressed air reservoir 10, up to forming between compressed air reservoir 10 and the handle-air spring 11 through a groove 13a of inlet valve 13 one be communicated be connected till.To this, compressed air can inject in handle-air spring 11 from compressed air reservoir 10, and in addition, compressed air acts on the piston area 21, and is last, and handle piston 12 is returned against operative orientation A together with the handle 9 and second unit 2.Thus, interrupted relative motion is being compensated in the short time very much between first module 1 and one second unit 2.

If the user uses bigger operational forces push handle 9, then above-mentioned process will repeat.

If the user is to handle 9 load sheddings or on handle 9 even mention tool set, then handle 9 moves with respect to the contrary operative orientation A of first module backward together with second unit 2.So handle piston 12 also slides backward, final groove 14a discharges on outlet valve 14, so compressed air can be discharged to the surrounding environment from handle-air spring 11, till the compressed air in handle-air spring 11 discharges fully.

In addition, second unit 2 is fixed in first module by a not shown stop part (for example, director element 6) and fully throws off to avoid second unit 2.This stop part guarantees that outlet valve 14 opens, and handle piston 12 is not exclusively skidded off from its guiding.

Based on the compressed-air actuated compressive characteristics in handle-air spring 11, executive component 4 can carry out vibration isolation to a great extent.In addition, in the embodiment shown in Fig. 1 to 3, arranged the spring assembly 5 of the helical spring form of the spring characteristic curve that is soft.If when not having 4 of executive components to act on little operational forces on handle 9, spring assembly 5 can fully compress originally, so it no longer has the effect of vibration isolation.But just might keep as shown in the figure relative position by means of executive component 4 between the first module 1 and second unit 2, like this, spring assembly 5 can be got enough spring deflections all the time in advance ready.This spring deflection is suitable for effectively will be isolated by vibration and handle 9 that first module 1 produces.

Fig. 4 illustrates the second embodiment of the present invention.Although the solution of a pure machinery has been shown in Fig. 2 and 3, Fig. 4 relates to the method for realization electromechanics of the present invention.As long as substantially the same member in employing and Fig. 2 and 3 then also will use identical label.Can give up once more this member is described.

One basic difference is valving: by means of the valve of operating through a not shown controller, promptly inlet valve 22 and outlet valve 23 are guaranteed air-flow turnover handle-air spring 11.

This controller obtains an important information from a sensor 24, utilize this sensor can know relative position between the first module 1 and second unit 2.As for sensor 24, it relates to proximity transducer (Naherungssensor) arbitrarily, for example, and Hall (Hall) sensor.Sensor 24 should be constructed like this: it obtains the relative position of two

unit

1,2 at least in the best region of being asked.

If controller is determined the displacement of second unit 2 by means of sensor 24 according to acting on operational forces on the handle 9, then it is by correspondingly controlling the rigidity that inlet valve 22 or outlet valve 23 change handle-air spring 11.Handle piston 12 and handle 9 correspondingly are shifted in desirable mode.

Controller can allow to work in certain fluctuation range, and this scope depends on the spring deflection of operational spring assembly 5 basically.

Can be by the adjusting frequency of executive component that controller is determined less than the vibration frequency that produces in the first module 1.Thus, relative less for the requirement of the control of executive component and member.But also can select adjusting frequency of executive component to be higher than vibration frequency.Then, executive component can be offset vibration on one's own initiative.Yet this need have corresponding quick control and

immediate action valve

23,24 to be prerequisite.

Fig. 5 illustrates a schematic section by a tool set, the with good grounds device that is used for the handle vibration isolation of the present invention of this tool belt.

In Fig. 5, illustrate one by taking from a sectional view of front or rear intercepting of a part that is used as the jump bit of tool set.

Device according to the present invention is particularly suitable for hand-held tool set, and it can produce vibration and impact in order to reach desirable work effect.Here, importantly to protect the user of guiding or hand-held tool set to avoid vibration and impact.

Vibrator 31 only is schematically depicted as the shell box in Fig. 5.In addition, vibrator has a driver and a movement converter such as motor or internal combustion engine.This movement converter will be converted to the slow rotation that is suitable for application purpose by the common rotation that driver produces, or also can be exchanged into the reciprocating motion of swing.So generally movement converter is embodied as the transmission device that has a bent axle transmission, this transmission device can drive an impactor.Can produce impact by means of impact piston from this impactor, this impact is directed on the instrument such as a hammer drill.

Except the jump bit shown in Fig. 5, the present invention also is suitable for drill hammer or tamper usually, or other tool set, and in these instruments, the vibration of handle is freed Practical significance.

Here, the part that produces vibration in the tool set or impact is referred to as vibrator 31.The different situation that this notion representative can be determined by the type of the selected tool set of technical staff.

The handle apparatus of making handle casing 32 couplings connection among this vibrator 31 and Fig. 5.As shown in Figure 5, handle apparatus 32 can partly surround vibrator 31.But it also can with vibrator 31 setting of turning up the soil at interval.

Handle apparatus 32 is removable along a principal direction A at least with respect to vibrator 31.To this, between handle apparatus 32 and vibrator 31, be provided with do not give among a Fig. 5 illustrate but for the known guider of people (for example, by means of parallel vibration).In addition, handle apparatus 32 also can move with respect to vibrator 31 along the other direction of skew principal direction A, if this also without hindrance technically or or even technical hope.

Handle apparatus 32 is provided with two handles 33, and the operator can grip and guide tool set on this handle.For the moulding of handle 33 is same known many variants are arranged.For example, for drill hammer, can adopt a single handle that is pistol handle or spade form to replace two handles 33.

One air-spring piston (Luftfederkolben) 34 is fixed on the vibrator 31.Air-spring piston 34 is surrounded by a spring drum 35 that is formed by the part of the wall of handle apparatus 32, like this, forms a spring chamber 36 of admitting spring 37 originally in the hollow space between air-spring piston 34 and spring drum 35.This shows, when handle apparatus 32 along direction A near vibrator 31 when compressing, the air pressure in the air spring 37 increase.Air-spring piston 34, spring drum 35, air spring chamber 36 and air spring 37 constitute a spring assembly 38 together.

One elastic bolster guide spare 39 is arranged on the upper side of air-spring piston 34, when very big and make air spring 37 fully by compression the time along the power of direction A effect, or the air that contains when air spring 37 is very little so that when guaranteeing an enough spring deflection, and this stop part can impinge upon on the handle apparatus 32.This elastic bolster guide spare 39 guarantees: when handle apparatus 32 directly contacts with air-spring piston 34 when also contacting with vibrator 31 thus through elastic bolster guide spare 39, also can guarantee the vibration isolation effect that handle apparatus 32 is certain.

Also be provided with a pump piston 40 on vibrator 31, it is surrounded by the part of the wall of the handle apparatus 32 that is used as pump cylinder 41.Pump cylinder 41 surrounds pump piston 40, thereby constitutes a pump chambers 42, is configured to an air pump 43 thus.

When handle apparatus 32 moved apart vibrator 31 and make the volume amplification of pump chambers 42 thus, air was injected in the pump chambers 42 through the check valve or first check-valves 44 around tool set.Consequent vacuum draw air enters in the pump chambers 42 through this first check-valves 44.

In contrast, if handle apparatus 32 moves towards vibrator 31 along direction A, then the volume of pump chambers 42 dwindles, so that the air under the pressure can inject in the air spring chamber 36 through one second check-valves 45 and an inlet opening 46.The air backflow of environment towards periphery is subjected to first check-valves 44 and hinders.Thus, the air pressure in the air spring chamber 36 increases, thereby improves the rigidity of air spring 37.

Because vibrator 31 is vibration or repeated stock continuously continuously basically, causes synthetic vibration thus, so vibrator 31 has the tendency that constantly moves back and forth.On the contrary, the handle apparatus 32 that is gripped by the operator should be maintained fixed motionless as far as possible.Thus, in tool set work, produce continuous relative motion between handle apparatus 32 and vibrator 31, it produces once time averaging constant air-flow by means of air pump 43.

When the air pressure that is produced by air pump 43 is not more than controlled pressure air spring chamber 36 in, flows into air spring chamber 36 interior air-supply air-flows and paused.Certainly, air spring 37 reaches the rigidity of its maximum possible.Air pump 43 and spring assembly 38 are correspondingly so designed: when theoretical maximum load (maximum, force that is applied along direction A by the operator), also guarantee to have between handle apparatus 32 and the vibrator 31 and separate, so that the vibration that produces in vibrator 31 is only through air spring 37 but also be delivered on the handle apparatus 32 without backstop 39 without other the contact of fixed object.

Structure one exit opening 47 in the wall of handle apparatus 32.This exit opening 47 is positioned to: according to the relative position between handle apparatus 32 and the vibrator 31, the air-spring piston 34 that exit opening 47 is used as the guiding valve effect covers or does not cover.As seen in Fig., when handle apparatus 32 when one determines point near vibrator 31, air-spring piston 34 has just covered the exit opening 47 as the valve opening.When the operator when direction A pushes with corresponding bigger gripping or thrust, this moment is then outstanding to belong to this situation.

In this case, by supplying gas from air pump 43 continuously, the air pressure in the air spring 37 is improving till air spring 37 rigidity are enough big always, and handle apparatus 32 opposing operators' operational forces pushes back towards direction A simultaneously.At this moment, handle apparatus 32 always return movement till air-spring piston 34 discharges exit opening 47 heavily again at least in part.Then, can outwards flow out in the environment through exit opening 47 from the air of air spring 37, like this, the air pressure in the air spring 37 reduce heavily again.By reducing the air pressure in the air spring 37, can make handle apparatus 32 again once more near vibrator 31 motions.

In this way, according to the relative position between handle apparatus 32 and the vibrator 31, can guarantee regulatory function as spring regulating device, also interchangeable kind of mode, basically determine this regulatory function according to static(al), for example, operator's curable grip remains in the working range of determining, preferably even remain on an assigned position.This assigned position great majority are corresponding with such position, that is, air-spring piston 34 partly covers exit opening 47 in mode shown in scheming at this moment.Then, adjust supply gas air-flow and the balance between the discharge air-flow of exit opening 47, so that consistent with the power of outside effect by the spring force of air spring 37 generations from air pump 43.

Be particularly suitable for a centre position owing to be used for the assigned position of air spring 37 adjustment, so, can guarantee that handle apparatus 32 is roughly the same with the motion path that leaves from vibrator 31 to the motion path of vibrator 31.Thus, vibrator 31 can vibrate well with respect to handle apparatus 32.

The adjusting of air spring 37 has the certain inertia that needs.Especially, obviously greater than the frequency of governing speed, like this, vibration does not cause the change of air spring 37 rigidity to the vibration frequency of vibrator, or only causes insignificant air spring 37 stiffness changes.Spring performance thus mainly or only the power by acting on handle apparatus 32 and vibrator 31 from the outside, at first the curable grip by the operator changes.

Correspondingly, the dither of air spring 37 compensation vibrators 31, so, handle apparatus 32 is formed a fruitful vibration isolation.

In another embodiments of the invention not shown in Figure 5, the air-flow of discharging from air spring 37 is constant, and correspondingly is controlled or is regulated by the air-flow that air pump is sent into, so that the change that the spring performance of air spring 37 is realized ideal.

In also having an embodiment, both can regulate and send into air-flow and also can regulate the discharge air-flow.

Replace above-mentioned air pump, also can consider another kind of scheme, utilize this scheme can produce air with definite force value.So air pressurized can directly be created in vibrator 31 by the driver that is arranged on the there.For example, corresponding blast fan is suitable for this.

In another variant, between vibrator 31 and handle apparatus 32, arrange a quality vibrator movably, it is reciprocating by the vibration of vibrator.

Self-evident, the member that belongs to spring assembly 38 and air pump 43 is included into handle device 32 and vibrator 31, also can exchange simply.The effect that is realized remains unchanged.

When air spring 37 had the rigidity of increase in tool set idle running process, then it had advantage especially.Especially, in jump bit shown in Figure 5, have such danger when being placed on a new bore position: jump bit can be placed tripping from the position.When air spring 37 in the idle running process corresponding to rigidity when big, the operator can guide jump bit better and implement boring.To this, can construct air-spring piston 34 like this: air-spring piston is in the relative position, wherein, handle apparatus 32 away from and also be moved back into vibrator 31, exit opening 47 is capped.Have only that air-spring piston 34 just discharges exit opening 47 when handle apparatus 32 compresses vibrator 31, like this, the rigidity of air spring 37 reduces at first significantly.Thus, before air-spring piston 34 pinned exit opening 47 heavily again in the above described manner, handle apparatus 32 can arrive a desirable assigned position (a for example centre position).In order to realize this operation, the control corresponding groove can be set in the sidewall of air-spring piston 34, this groove is every to connect air spring 37 and exit opening 47 according to relative position.

Curable grip by adjusting the operator is thrust and power that is caused by tool set and the gravity that is gripped by the operator especially, the operating point of the spring characteristic curve of air spring 37 can be remained within the scope always, this scope allows vibrator 31 that the vibration of maximum possible is arranged with respect to handle apparatus 32.Thus, vibration and impact are isolated by handle apparatus 32 effectively.

Usually exist such problem: when fresh air when check-valves 44 is sent into, dust and pollutant can enter the inside of instrument, especially, enter in air pump 43, the corresponding air pressure generation device or air spring 37 that changes.For fear of this situation, should be by every means the air that leaves air spring 37 through exit opening 47 be incorporated in the loop of sealing of air pump 43 or another air pressure generation device, thus, air can be pumped into heavily again in the air spring 37.Like this, the backflow of air can be reached, wherein, the air of escaping need only be remedied by leakage loss.But can always same air be applied to air spring 37 heavily again by refluxing basically.

A tool set according to the present invention has one thus between the first module of vibration and the air spring between static Unit second (for example, handle).The spring performance of this air spring can preferable mode change, and, can change the filling level of the gas in the air spring or the air pressure in the air spring that is.Thus, above suggestion for air pressure generation device and spring regulating device has been described.In particularly advantageous mode, for example, through the driven plunger of air spring percussion tool, the driving of tool set can realize producing desired air pressure.Replace, can use the relative motion of the vibration between first and second unit, be used for the pumping path that air is carried and compressed air produces so that obtain one thus.Especially, can make the interior air pressure of air spring or the loading of its air be adapted to various situations all the time through simple mechanic adjustment unit, at first be to be adapted to the thrust that the operator applies.

Claims

1. hand-held tool set has:

One first module (1) that is in operation and is energized by vibration;

One relative with this first module (1), make Unit second (2) of relative motion along operative orientation (A) at least; And

One is arranged in the isolation mounting that works (3) between first module (1) and this Unit second (2);

Wherein, this isolation mounting (3) has an executive component (4) that is used for producing adjustment power at least, utilize this isolation mounting (3), one operational forces that acts between first module (1) and Unit second (2) along operative orientation (A) is compensated at least in part, wherein, this executive component (4) pneumatically is driven;

It is characterized in that,

Executive component (4) has one handle-air spring (11), and the compressed air that is filled in it can change; And

Be parallel to executive component (4) and between first module (1) and Unit second (2), arrange a spring assembly (5).

2. hand-held tool set has:

One first module (1) that is in operation and is energized by vibration;

Wherein, this isolation mounting (3) has an executive component (4) that is used for producing adjustment power at least, utilize this isolation mounting (3) one to be compensated at least in part along the operational forces that operative orientation (A) acts between first module (1) and Unit second (2), wherein, this executive component (4) pneumatically is driven;

It is characterized in that,

The vibration isolation effect mainly realizes by handle-air spring (11).

3. tool set as claimed in claim 1 or 2 is characterized in that,

Tool set is a drill hammer or jump bit;

Unit second (2) has one handle (9);

One air spring impactor is set in first module (1), utilizes one, drive this impact piston by means of an air spring (8) that is formed between this drive piston (7) and the impact piston by motor-driven drive piston (7); And

Structure drive piston (7) is used for producing compressed air so that executive component (4) is fed.

4. tool set as claimed in claim 3 is characterized in that, executive component (4) has a compressed air reservoir (10) of filling with compressed air by drive piston (7).

5. tool set as claimed in claim 4 is characterized in that,

Executive component (4) has this compressed air reservoir (10), a valving (13,14; 22,23), handle-air spring (11) and one handle piston (12);

Compressed air reservoir (10) is through valving (13,14; 22,23) be connected with handle-air spring (11); And

Handle-air spring (11) acts on the handle piston (12) that links to each other with handle (9).

6. tool set as claimed in claim 5 is characterized in that, valving (13,14; 22,23) constructed like this, promptly, when handle piston (12) through the degree of a regulation when dwindling the volume of change handle-air spring (11), compressed air is introduced in handle-air spring (11), so that reach the prescribed level of handle-air spring (11) volume once more from compressed air reservoir (10).

7. as claim 5 or 6 described tool sets, it is characterized in that, valving has an outlet valve (14), when the volume of handle-air spring (11) surpassed the maximum of a regulation based on the displacement of handle piston (12), this outlet valve (14) was used to make compressed air to emit from handle-air spring (11).

8. tool set as claimed in claim 1 or 2 is characterized in that, a sensor (24) is set, and is used for determining the relative position between first module (1) and Unit second (2).

9. tool set as claimed in claim 8 is characterized in that,

Sensor (24) is connected with a controller with valving (22,23); Wherein,

Valving (22,23) controlled by this controller, so that handle-air spring (11) occupies such compressed air state, that is, remain in the fluctuation range of a regulation by the first module (1) of sensor (24) grasp and the relative position of Unit second (2).

10. tool set as claimed in claim 1 or 2 is characterized in that, this spring assembly (5) has one than the soft spring characteristic curve of executive component (4).

11. tool set as claimed in claim 1 or 2 is characterized in that, spring assembly (5) has a spring rate, and the size of this spring rate should make motion present the amplitude of a vibration and the obstruction of spring assembly do not occur at least by this spring assembly (5).

12. tool set as claimed in claim 2 is characterized in that, the adjustment power that is produced by executive component (4) changes circularly, causes the change with same frequency thus, and drive piston (7) moves along with this frequency.

13. tool set as claimed in claim 1 or 2 is characterized in that, the maximal regulated frequency of executive component (4) is less than the vibration frequency that produces in the first module (1).

14. tool set as claimed in claim 1 or 2 is characterized in that, the motor-driven compressed air generation device by tool set is set, and is used for producing compressed air into executive component (4).

15. tool set as claimed in claim 1 or 2, it is characterized in that, the adjustment power of executive component (4) should be adjusted like this: guarantee fluctuation range for relative position that cause by different operational forces, between first (1) and second unit (2) less than another fluctuation range, described another fluctuation range be meant in described different operational forces but do not have to cause under the compensating action of adjustment power of executive component (4), the fluctuation range that relative position reached between first module (1) and Unit second (2).

16. a device that is used for the handle vibration isolation in tool set has:

One is positioned at the vibrator (31) of tool set;

One with respect to this vibrator (31) at least along a principal direction (A) handle apparatus (32) movably; And

The vibration kickoff mechanism of one effect between vibrator (31) and this handle apparatus (32), this vibration kickoff mechanism has a spring assembly, at least a portion of the power of effect is transmitted through this vibration kickoff mechanism between handle apparatus (32) and vibrator (31)

It is characterized in that,

Spring assembly has the air spring (37) of an effect between handle apparatus (32) and vibrator (31);

Spring assembly has one and is parallel to the other spring (5) that air spring (37) is arranged; And

The vibration kickoff mechanism has a spring regulating device, this spring regulating device according to a power that between handle apparatus (32) and vibrator (31), acts on along principal direction (A) or according to corresponding to active force, handle apparatus (32) changes the spring rate and/or the initial stress of air spring (37) with respect to the relative position of vibrator (31).

17. being used for the device of one handle vibration isolation in tool set has:

One is positioned at the vibrator (31) of tool set;

One with respect to vibrator (31) at least along a principal direction (A) handle apparatus (32) movably; And

The vibration kickoff mechanism of one effect between this vibrator (31) and this handle apparatus (32), this vibration kickoff mechanism has a spring assembly, and at least a portion of the power of effect is transmitted through this vibration kickoff mechanism between handle apparatus (32) and vibrator (31);

It is characterized in that,

This spring assembly has the air spring (37) of an effect between handle apparatus (32) and vibrator (31);

The vibration isolation effect mainly realizes by handle air spring (37); And

The vibration kickoff mechanism has a spring regulating device, this spring regulating device is according to a power that acts between handle apparatus (32) and vibrator (31) along principal direction (A), or according to corresponding to active force, handle apparatus (32) is with respect to the relative position of vibrator (31), changes the spring rate and/or the initial stress of air spring (37).

18., it is characterized in that the power of effect is one to be applied to curable grip on the handle apparatus (32) by the operator along principal direction (A) basically between handle apparatus (32) and the vibrator (31) as claim 16 or 17 described devices.

19., it is characterized in that handle apparatus (32) is maintained in the working range of being scheduled to by spring regulating device with respect to the relative position of vibrator (31) as claim 16 or 17 described devices under the acting in conjunction of active force.

20. device as claimed in claim 19, it is characterized in that, air spring (37) is operated by spring regulating device, make in the power that between handle apparatus (32) and vibrator (31), changes handle apparatus (32) remain essentially in the working range, in the assigned position corresponding to predetermined relative positions.

21. device as claimed in claim 20 is characterized in that, this assigned position is the centre position in the working range, and handle apparatus (32) moves towards the respective end portions position from the move distance of middle position through substantially the same length.

22. as claim 16 or 17 described devices, it is characterized in that, air spring (37) is operated by spring regulating device, air spring in idle running (37) has a rigidity that improves, and the power of effect between handle apparatus (32) and vibrator (31) is positioned at below the preestablished limit value when idle running.

23. as claim 16 or 17 described devices, it is characterized in that, the rigidity of operating air spring (37) of working is reduced by spring regulating device, so that handle apparatus (32) is in the assigned position of working range, be positioned at more than the preestablished limit value in the work power that between handle apparatus (32) and vibrator (31), acts in service.

24. device as claimed in claim 16 is characterized in that, gets the air that is used for air spring (37) ready by an air pump (43).

25. device as claimed in claim 17 is characterized in that, gets the air that is used for air spring (37) ready by an air pump (43).

26. device as claimed in claim 24 is characterized in that, air pump (43) is by the drive motors transmission of tool set.

27. device as claimed in claim 25 is characterized in that, air pump (43) is by the drive motors transmission of tool set.

28. device as claimed in claim 24 is characterized in that, air pump (43) carries out transmission by the relative motion of vibration between handle apparatus (32) and the vibrator (31).

29. device as claimed in claim 25 is characterized in that, air pump (43) carries out transmission by the relative motion of vibration between handle apparatus (32) and the vibrator (31).

30. as any one described device in the claim 24 to 29, it is characterized in that,

Air pump (43) has a pump chambers (42) that is provided with between handle apparatus (32) and vibrator (31), its volume constantly changes owing to the relative motion of concussion;

When the volume of pump chambers (42) becomes big, air through one first check-valves (44) can from around be injected in the pump chambers (42); And

Air is transferred in the air spring chamber (36) from pump chambers (42) through one second check-valves (45), forms air spring (37) when the smaller volume of pump chambers (42) in the air spring chamber.

31. as any one described device in the claim 24 to 29, it is characterized in that, the average injection air-flow from air pump (43) to air spring (37) is essentially constant in a time period of determining, spring regulating device has a valving, can adjust according to the relative position of handle apparatus (32) from the air-flow that air spring (37) flows out by this valving.

32. device as claimed in claim 30, it is characterized in that, the average injection air-flow from air pump (43) to air spring (37) is essentially constant in a time period of determining, spring regulating device has a valving, can adjust according to the relative position of handle apparatus (32) from the air-flow that air spring (37) flows out by this valving.

33. device as claimed in claim 30, it is characterized in that, valving has an exit opening (47), when handle apparatus (32) further away from each other during vibrator (31) this opening can open, when handle apparatus (32) seals at least in part at the effect lower edge of power principal direction (A) during near vibrator (31), exit opening.

34. device as claimed in claim 30, it is characterized in that, valving has an exit opening (47), when handle apparatus (32) further away from each other during vibrator (31) this opening can open, when handle apparatus (32) cross working range the centre position and during near vibrator (31) exit opening seal at least in part.

35. as claim 16 or 17 described devices, it is characterized in that,

Air spring (37) forms in an air spring chamber (36);

One exit opening (47) is set in the wall of this air spring chamber (36);

Valving has the movable guiding valve of relative exit opening (47) (34);

This exit opening (47) is not to be exactly to move with vibrator (31) with handle apparatus (32), and in contrast, guiding valve (34) is mobile with vibrator (31) or handle apparatus (32);

When handle apparatus (32) than it during corresponding to assigned position during further from vibrator (31), exit opening (47) is not covered by guiding valve (34); And

When handle apparatus (32) than it during corresponding to assigned position during more close vibrator (31), exit opening (47) is covered by guiding valve (34).

36. as claim 16 or 17 described devices, it is characterized in that spring regulating device has a valving, the air-flow that flows into air spring (37) by this valving is adjusted according to the relative position of handle apparatus, and, from the air-flow substantial constant of air spring (37) outflow.

37., it is characterized in that handle apparatus (32) has at least one handle (33) as claim 16 or 17 described devices.

38. as claim 16 or 17 described devices, it is characterized in that, between handle apparatus (32) and vibrator (31), an elastic bolster guide spare (39) is set, when the rigidity of air spring (37) is not enough, for transmission power, at least a portion of the power of effect can be transmitted through this stop part (39) between handle apparatus (32) and the vibrator (31).

39., it is characterized in that the air that is used for air spring (37) flows out from an air air accumulator as claim 16 or 17 described devices.

40. device as claimed in claim 39 is characterized in that, the air that flows out from air spring (37) is back in this air air accumulator.

41. a tool set, described tool set comprise as any one described device that is used for vibration isolation in the claim 16 to 40.