WO2017129789A1

WO2017129789A1 - Hammer device

Info

Publication number: WO2017129789A1
Application number: PCT/EP2017/051842
Authority: WO
Inventors: Holger ZENZ
Original assignee: Zenz Holger
Priority date: 2016-01-29
Filing date: 2017-01-27
Publication date: 2017-08-03
Also published as: EP3408058A1; EP3408058B1; DE102016101675B4; DE102016101675A1

Abstract

The invention relates to a hammer device (1), in particular a manual hammer device (1), comprising a percussion mechanism (12) which is designed to carry out a percussion movement on a tool (2) in the axial direction (A). Said hammer device is characterised in that it comprises at least one percussion force storing means (15) designed to at least partially store a percussion force of the percussion mechanism (12) in the axial direction (A), and to at least partially release said force in the form of a percussion force in the opposite axial direction (B).

Description

TITLE

hammer device

DESCRIPTION

The present invention relates to a hammer device according to the preamble of claim 1 and a tool for use in such a hammer device according to claim 11.

In various fields of technology, it may be necessary to separate connected bodies again. This may involve connected bodies that have been intentionally joined together, but also connected bodies whose connection has been unintentionally entered. The latter can e.g. be the case, if a second body is brought into contact with a first body by a process, so that an unwanted connection between these two bodies is established. This connection can be positive, non-positive and / or cohesive.

For example, in the cement industry so-called. Ball mills are used, which generally serve the coarse, fine and Feinstzerkleinerung or homogenization of regrind. A ball mill consists of a rotatable grinding chamber in which grinding stock can be comminuted by grinding media, for example in spherical form. The grinding chamber can be separated into individual chambers by one or more partitions, which are usually designed as a grid. The first chamber can then be filled with the largest balls and the other chambers with smaller and smaller balls. In cement mills, this separation is done continuously by a Gattierpanzerung, ie by a separation of the balls by I mpuls on beveled grids. The mill can by a central opening in one of the end walls are filled with the material to be shredded. The discharge depends on the design. In dry mills, the material to be ground is discharged through slots in the tube wall at the mill end. The grinding media are thus retained.

In such ball mills e.g. In the cement industry, it may happen that, during the course of the operation of the ball mill, foreign materials, such as glass, are deposited on the grids of the partitions of the individual chambers, which may also be referred to as trench walls. Ball remnants of the usually metallic grinding media, small in the production unintentionally mitbeförderte metal body and cement hardening can set, all of which can also be referred to as a clamping body. As a result, the slots of the grids of the intermediate walls can enforce the duration by the clamp body.

The added slots can reduce the throughput and thus the efficiency of the ball mill, which is why the slot walls regularly from the stuck

Clamping bodies are to be cleaned. This has hitherto usually been done by manual methods by manual striking tools or by manual lever tools, by means of which the clamping body driven by a person further (in the axial direction) through the slot or driven out again against the direction of entry of the clamping body (in gegenachsialer direction) from the slot or manually to

Slots entry side be levered out. This can be very laborious and time consuming as well as exhausting and not always lead to the desired cleaning of the slots.

DE 10 2011 007 050 B4 describes a tool for releasing a component component, in particular for extracting an injection nozzle. The tool has a frame, which has two spaced apart longitudinal members, extending between the two side members, the rear cross member and extending between the two side members, front cross member. The tool further comprises a coupling element, which is provided in the region of the rear cross member, extending in the direction of the front cross member and is used for coupling a head of a pneumatic hammer. Also, the tool has a traction means, which in the area the front cross member is provided, extending in the direction away from the rear cross member direction and a coupling of the module to be solved is used.

With this tool of DE 10 2011 007 050 B4, a commercially available hand-held pneumatic hammer can be coupled such that the pressure force of the pneumatic hammer in its axial direction by means of the tool in a tensile force on the to be solved

Component component can be converted in the counter-axial direction. As a result, a pressure-generating vibration impact of the pneumatic hammer can be converted via the tool into a vibration train acting on the component component to be released. In other words, via the tool of DE 10 2011 007 050 B4, a compressive force can be converted into a tensile force on the component component to be released. In this case, the pressure force of the pneumatic hammer and the tensile force of the tool along a common longitudinal axis of the pneumatic hammer. The disadvantage here is that by the tool of DE 10 2011 007 050 B4 only forces, in particular tensile forces, in one direction, namely in the counter-axial direction of

Pneumatic hammer, can be exercised.

A further disadvantage is that only forces can be exerted on a component component to be released via the tool of DE 10 2011 007 050 B4, which by means of a

Coupling with the tool of DE 10 2011 007 050 B4 can be connected.

An object of the present invention is to provide a hammer device of the type described in the opening paragraph, so that forces can be exerted both in the axial direction and in the counter-axial direction. In particular, forces should be in

can be exerted on a body without a

Coupling to the body must be made.

The object is achieved by the features of the characterizing part of claim 1 and by the features of claim 11. advantageous

Further developments are described in the subclaims. Thus, the present invention relates to a hammer device such as a pneumatic hammer. Preferably, this hammer device can be hand-held, ie held and guided by a person as an operator in one hand or with both hands. However, the hammer device may also be passed through a device such as a machine. The hammer device has a striking mechanism, which is designed to act in the axial direction striking a tool can. The tool can be received by means of a holding means by the hammer device. The axial direction refers to one of the two directions of the longitudinal axis of the

Hammer device.

According to the invention, this hammer device is characterized by at least one impact energy storage device which is designed to at least partially store a striking force of the percussion mechanism in the axial direction and to release it at least partially as an impact force in a counter-axial direction. In this case, the counter-axial direction denotes the direction of the longitudinal axis of the hammer device, which is oriented opposite to the axial direction. By a impact energy storage means is meant any means capable of kinetic energy in the axial

Direction to receive and at least partially, preferably as completely as possible, again in Gegenachsialer direction. The impact energy storage means may comprise an elastic means but also a rigid means such as e.g. an impact body, in particular made of metal, which can direct the kinetic energy of the percussion mechanism by impact action from the axial direction in the counter-axial direction.

The idea underlying the present invention is that the

Hammer device according to the invention is provided with a striking function, along the longitudinal axis of the hammer device in both directions, i. both in the axial direction and in the counter-axial direction, can act. In this way, not only a hitting by the operator as the hammers handling person away but also a hitting the operator are made possible. As a result, e.g.

Clamping elements in grids of a ball mill both by means of the invention

Hammer device further driven in the axial direction through the slot and again against the direction of entry of the clamp body in gegenachsialer direction be driven out of the slot. This can simplify, improve, accelerate or even enable the cleaning of such grids of clamping bodies. Furthermore, the cleaning effort can be reduced by the assistance of such a hammer device.

In other words, depending on the situation located in the openings or slots of the grid of a ball mill clamp body either zugschlagend or

zurückschlagend in the direction of the slot entry side or penetrating towards the slot exit side faster and less wear intensive solved from the opening or slot and then removed as previously known. It can do that

Tool are preferably acted upon with high energy in the axial direction, so that, for example, with clamping bodies added slots can be cleaned by blowing in the direction of the slot exit side in the slot wall of a ball mill. In Schlitzverstopfungen, in which the clamped in the slot foreign or hard material due to its geometric shape is only partially (not completely) clamped slot entry side, can often successfully aligned by an oblique to the longitudinal axis

Impact action in counter-strike of the tool, a loosening of the clamp body in the direction of the slot inlet side can be effected. This procedure can be achieved by a

appropriate geometric shape of the tool can be favored.

Also, the hammer device according to the invention for loosening bolts, nails, stuck chisels, drill pipe, etc. may be used, if a rear engagement with a suitable rigid or flexible tool is possible or a firm coupling to the clamp body with a only tensile loadable intermediate component (eg rope ) can be enabled.

This possibility of impact execution in both directions of the longitudinal axis of

Hammer device according to the invention is achieved in that the impact on the tool in the axial direction on the impact mechanism of the hammer device and the impact on the tool in gegenachsialer direction via a striking force storage means. The impact energy storage means is characterized by the previous blow of the Schlagwerks on the tool in the axial direction with energy charged, which can be delivered after completion of the previous strike of the striking mechanism on the tool in the axial direction again by the impact force storage means on the tool in the counter-axial direction. In other words, the rebound effect of the impact energy storage means is used as an elastic body or as a rigid impact body in order to achieve the desired direction reversal of the direction of force of the actual impact movement of the impact mechanism. In this way, both an axial and a counter-axial movement of the tool by the axial striking movement of the

Schlagwerks the hammer device according to the invention are exercised.

The percussion mechanism may be in continuous contact with the impact energy storage means for this purpose, i. for the entire duration or strength of the impact movement in the axial direction, or be at least partially spaced therefrom along the longitudinal axis, so that only part of the duration or strength of the impact movement in the axial direction can act on the impact force storage means. If there is a continuous contact between percussion and impact energy storage, so can the greatest possible

Impact force transfer from the percussion to the impact energy storage means and thus the greatest possible impact energy storage and rebound effect and delivery in

counter-axial direction.

Preferably, the impact mechanism is operated by means of compressed air, by means of pressure fluid, by means of a fuel-driven drive and / or electro-mechanically. As a result, different variants of drive means can be used. When operated with compressed air or pressurized fluid percussion impact function on the tool in the axial direction by means of a movable piston or percussion and in the gegenachsialen direction by at least one charged in the previous blow impact energy storage means or the rebound effect of a rigid impact body can be effected. As a fuel-powered drive, e.g. a gasoline engine are used. Preferably, the beats in the axial direction may have higher energy than those in the counter-axial direction. This can be caused by a lossy one

Impact energy storage or directional conversion of the impact energy through the Impact energy storage means are effected. These different strong impact functions can be advantageous due to a tool effect, but also due to a durability of the tool. According to one aspect of the present invention, the impact force storing means is resiliently resetting, preferably resiliently restoring incompressible. In this way, a storage and release of the recorded impact energy in

be implemented in the opposite direction. In particular, an elastic

restoring impact energy storage means quickly and without loss of energy against the previous impact direction back to the tool again. In this case, the efficiency can be increased by using an incompressible impact energy storage means.

According to a further aspect of the present invention, the impact energy storage medium on an elastomeric body, preferably the impact energy storage means consists of an elastomeric body, or the impact energy storage means comprises a metallic spring, preferably a metallic coil spring, preferably consists of this. By means of such means, the function of an impact force storage and delivery in

be implemented in the opposite direction. Elastomeric body can be easily prepared and adjusted by the choice of material to the desired Shore hardness to provide the desired impact energy storage for each application. Also, metallic springs can be adjusted by their geometry, etc. to the desired spring constant. In particular, helical compression springs can be used for spring deflection in the direction of a longitudinal axis. It is also possible to use a plurality of elastomer bodies or metallic springs in common. Also, at least one elastomeric body with at least one metallic spring can be used together as impact energy storage means.

According to another aspect of the present invention, the impact energy storage means is rigidly rebounded. In other words, takes place in this case, no elastic deflection of the impact energy storage means, but the impact energy storage means is designed so rigid that the impact force of the percussion in the counter-axial direction Impact energy storage rebounds without being stored. The rigidly rebounding impact energy storage means in this case may be an additional body which may be disposed within a holding means of the hammer means such as its closure cap. However, the rigidly rebounding impact energy storage means may also be the retaining means itself. In this way, the highest possible efficiency of directional conversion of the impact energy can be achieved. The disadvantage here, however, that the

Impact energy storage means and the tool used or its collar, which can absorb the rebound, as well as the impact mechanism in the connection to the detachable

Holding means can be worn by the rebound effect strong or fast.

According to another aspect of the present invention, the

Impact energy storage means a rigid baffle, preferably a rigid

Metal body, on, preferably consists of this. The application of a rigid

Impact body can allow a simple and cost-effective implementation in manufacturing in this type of reversal of direction of impact. It can also be used together several rigid bodies. Also, at least one rigid body and / or at least one elastomeric body and / or at least one metallic spring can be used together as impact energy storage means. The hammer device or the holding means can also serve as impact force storage means, in particular as a rigid impact body.

According to a further aspect of the present invention, the impact force storage means is adapted to at least partially store the impact force of the percussion mechanism in the axial direction via a radial projection of the tool and to release it at least partially as a striking force in a counter-axial direction. In other words, a preferably positive and / or non-positive coupling between the tool and the impact force storage means can be achieved via a radial projection of the tool and in particular of the shank of the tool. In this way, a transfer of at least a portion of the impact energy from the tool in the axial direction to the impact energy storage, e.g. by squeezing the

Impact energy storage means or by a rebound in the axial direction, for example against a holding means of the tool. At the same time, the impact energy storage in press counter-axial direction against the projection and thus transfer its stored impact energy in this counter-axial direction on the projection on the tool. According to a further aspect of the present invention, the impact force storage means is adapted to be arranged by means of a releasable holding means on the remaining hammer means. This releasable holding means may be, for example, a closure cap or an end piece of the hammer device, which, for example, with the housing of the

Hammer device can be screwed. That way that can

Impact energy storage means are easily exchanged, e.g. to replace if damaged and worn. In this way too, the impact force storage means can be easily exchanged, so that a change in the rebound behavior of the

Impact energy storage means can be achieved. As a result, this effect or the impact force which can be exerted on the tool in this case can be adjusted in the counter-axial direction of the respective application, e.g. by choosing different types of

Impact energy storage means or by the choice of different impact energy storage means with different spring constants. The releasable holding means can be replaced with tools or without this. According to another aspect of the present invention, the impact energy storage means can be arranged longitudinally spaced from the percussion mechanism, so that the strength of the impact force of the percussion mechanism on the impact force storage means in the axial direction can be influenced thereby. In other words, by a

Spacing of the impact energy storage means in the longitudinal direction relative to the impact mechanism can be achieved that only after an already partially executed blow of the percussion in the axial direction on the tool a power transfer of the remaining impact force can take place on the impact energy storage means, because previously no force-transmitting contact between percussion and impact energy storage means has existed. In this way, the degree of impact force can be specified in the axial direction, which for exerting a striking force in gegenachsialer direction by the

Impact energy storage means to be stored. At the same time this can be a correspondingly greater impact force in the axial direction can be provided. In this case, the distance in the longitudinal direction, preferably continuously, by the operator to be set so that the impact force can be divided in the axial and counter-axial direction and the application can be adjusted accordingly.

According to another aspect of the present invention, the impact force storage means may be spaced apart from the percussion mechanism in the longitudinal direction so that an impact force of the percussion mechanism on the impact force accumulation means in the axial direction can thereby be avoided. In this way, a use of the hammer device according to the invention can be made possible in a conventional manner by the distance between percussion and impact energy storage means in

Longitudinal can be set so large, so that no transfer of the impact force can be done on the impact energy storage means. As a result, a blow in the counter-axial direction can be completely avoided.

At the same time, the entire impact force of the percussion mechanism can be used for a stroke in the axial direction. In this way, the inventive

counter-axial impact possibility are provided as an option of a hammer device according to the invention, which act both conventionally in the axial direction and, if necessary, by reducing the o.g. Spacing from the operator to

Punching in a counter-axial direction can be used.

According to another aspect of the present invention, the impact force storage means may be arranged longitudinally spaced from the percussion mechanism by means of an adjustable holding means. This can preferably be achieved by a rotation of the

Holding means, in particular by a screwing movement, take place about the longitudinal axis in locked or lockable positions of the holding means, which can preferably be carried out in locked Schnellverstellpositionen or continuously. In this way, a simple adjustment, in particular continuously or by means of quick adjustment, for the metering of the strength of the impact force in gegenachsialer direction and for the avoidance of impact in gegenachsialer direction can be provided. Also, this can

Adjustment can be easily and quickly and intuitively used by the operator. Preferably, the distance can be changed in the longitudinal direction, for example between two or more discrete positions in which the holding means can be preferably locked. For example, between a first position, in which no contact of the percussion mechanism with the impact energy storage means is established and thus no impact force can be applied in gegenachsialer direction, and a second position in which a contact of the hammer mechanism and the impact energy storage means state and thus also a striking force can be exerted in a counter-axial direction, be differentiated to the function of the counter-axial

To create impact force generation over the distance in the longitudinal direction and can turn off. If additional positions are made possible in addition to the second position, different degrees of impact force can be set in a counter-axial direction.

The present invention also relates to a tool for use with a

Hammer device as described above, wherein the tool in the axial direction of the hammer device pointing away has a tool end which is adapted to transmit to the impact force of the percussion mechanism at least partially in a counter-axial direction a body to be machined. By such a tool can be exercised by means of exercisable in the direction gegenachsialen impact force of the invention

Hammers a body such. a clamping body in the slots of a grid of a ball mill are struck from behind, in order to be able to remove it in this way opposite its direction of entry into the grid of this.

According to one aspect of the present invention, the tool end has a hook-like working flank, preferably in curved form, for the application of punches in

counter-axial direction. In this way, it is possible to reach behind a body to be loosened, in particular a clamping body to be loosened.

Preferably, the shape of the hook-like working flank may be without a corner such as e.g. be executed bent. In this way, a notch load in a corner can be avoided, which, for example, in very strong clamping and or or hard

Clamping could lead to cancel the working edge. In other words, can By avoiding Rissinitiation by edges and notches, the life of the tool can be improved by the transition of the shape of the tool in the region of the hook-like projection in the axial direction bent, ie rounded or conical formed.

By the hook-like working flank an extension of the tool in this area in the distal direction and thus at least partially enlarged compared to the rest of the tool can be achieved simultaneously. This way you can from

Impact energy storage means outgoing blows in gegenachsialer direction on a clamping body to be solved have a deviating from the longitudinal axis of force component, which can cause an easy release of the clamping body of the clamp.

According to a further aspect of the present invention, the tool end has a recessed working flank, preferably in concave or retracted form, for the application of blows in the axial direction. Over this working flank, impacts may be applied to e.g. a body to be released can be exerted directly in the axial direction so as to make it e.g. continue through the grid of a ball mill.

Due to the fact that this working edge is executed in a recessed position, a lateral

Slipping of the tool to be solved by clamping body avoided or reduce this risk. In other words, this can be a centered application of the

Tool on the clamp body are favored, which can ensure the guided centered repeated impact on the clamp body and improve. According to a further aspect of the present invention, at least one working flank, preferably both working flanks, are formed as a flat region of the tool end. In this way, the use of the tool according to the invention in flat

Workspaces such as be made possible through the bars of a grid. In other words, in this way, performing the working edge or the

Working edges of the tool can be made possible by gaps or slots, for example, a slot wall of a ball mill. According to a further aspect of the present invention, the tool consists at least in sections, preferably completely, of a thermally tempered viscous iron-based alloy. As a result, the durability of the tool and thus its

Duration of use can be improved.

An embodiment and further advantages of the invention are described below

Explained in connection with the following figures. It shows:

1 is a schematic sectional view of a hammer device according to the invention with inventive tool in a first position,

Fig. 2 is a schematic sectional view of the hammer device according to the invention with inventive tool of Fig. 1 in a second position, and

Fig. 3 is a perspective schematic representation of an inventive

Tool.

Although the present invention may be applicable to a variety of applications in an economical and user-friendly manner in which an axial impact force is to be generated from an axial impact force, e.g. when solving any

Component components of another component, it is present under

Referring to the exposure of slots in slot walls of ball mills the

Cement industry explained in more detail by way of example. For other applications that require a pure Zugschlagwirkung, customized tools can be used from the end of the shaft boundary between 21 and 25 by means of L-shaped or T-shaped geometric

Execution of the tool end or by means of suitable coupling with the clamping body to be released can achieve the achieved counter-axial impact effect on the clamping body.

Fig. 1 shows a schematic sectional view of an inventive

Hammer device 1 with inventive tool 2 in a first position. Fig. 2 shows a schematic sectional view of the hammer device 1 according to the invention with inventive tool 2 of FIG. 1 in a second position. Fig. 3 shows a perspective schematic representation of a tool according to the invention 2. The Hammer device 1 and the tool 2 extend substantially in a common longitudinal axis X, perpendicular to the radial direction R is arranged.

The hammer device 1 can be guided by an operator by hand and has for this purpose a handle 11, which is part of a housing 14. Within the housing 14, a percussion mechanism 12 is arranged, which can perform blows in an axial direction A along the longitudinal axis X. The percussion mechanism 12 may e.g. pneumatically operated with compressed air. The housing 14 has a front housing 141 extending away from the percussion mechanism 12 along the longitudinal axis X.

The handle 11 in the axial direction A opposite a releasable retaining means 13 is arranged on the housing 14 by means of the front housing 141. The detachable holding means 13 has a closure part 132 in the form of a closure cap 132, which can be screwed by rotation about the longitudinal axis X on the front housing 141 or removed by unscrewing. The closure cap 132 faces away from the housing 14 in the axial direction A and has a passage opening 133 through which the tool 2 is guided.

Within the closure cap 132 there is arranged a striking force storage means 15, which is formed by an elastomer body 15, which in the present exemplary embodiment has a two-part design but could also be made in one piece or could have more than two parts. Instead of the elastomer body 15, it would also be possible to use a rigid one-part or multi-part impact body 15, e.g. made of steel are used. The elastomeric body 15 abuts on the inside of the closure cap 132 in the region of the passage opening 133 from the inside and extends in the opposite direction to the axial direction A, i. in the counter-axial direction B, towards the housing 14.

A variable distance d between the front housing 141 and the elastomer body 15 and between the housing 14 and the holding means 13 can also be set via the detachable holding means 13. Here, the releasable retaining means 13 through the

Screwing movement in the longitudinal direction X are brought closer to the housing 14 and rotated away from it, so that can be set hereby the distance d. The tool 2 is arranged within the holding means 13 and protrudes in the axial direction A out of this through the passage opening 133 in the axial direction A. The tool 2 has a shank 21, which rests with its shank end 21 'against the percussion mechanism 12, so that the percussion mechanism 12 can exert blows in the axial direction A on the tool 2.

The tool 2 has in the axial direction A behind the shaft end 21 'on a radial projection 24, with which the tool 2 in the axial direction A against the

Elastomer body 15 rests. In this way, a part of the impact energy which is exerted by the impact mechanism 12 on the tool 2, transferred to the elastomer body 15 and stored there. At the same time, via the projection 24, a return transmission of the stored impact energy from the elastomer body 15 in FIG

gegenachsialer direction B take place as soon as the blow of the striking mechanism 12 is over and no longer acts in the axial direction A on the tool 2 and elastomer body 15. In this way, a blow of the tool 2 in the counter-axial direction B can be exercised.

To strike this blow in a counter-axial direction B on a and

in particular a body to be released in a counter-axial direction B, here one

To transmit clamping body in a slot of a grid of a ball mill (not shown), the tool 2 at its the shaft end 21 'at the axial direction A opposite tool end 22 a hook-like working edge 232 which is formed, blows in the counter-axial direction B on the to transfer to releasing clamp body, cf. Fig. 2. In other words, the clamp body is to be released from the rear with punches in gegenachsialer direction B. The hook-like working edge 232 is

formed corresponding radially protruding to allow this rear grip. In this case, the hook-like working flank 232 is rounded or conical in order to avoid cracking or to allow the most uniform transmission of forces between the hook-like working flank 232 and the shaft 21. The tool end 22 also has a recessed working edge 231, which serves to transmit the impacts of the percussion mechanism 12 in the axial direction A on the clamping body to be solved in order to drive through this further through the slot of the grid. Around In this case to avoid lateral slipping, this working edge 231 is formed indented.

The tool end 22 is designed to be flat overall in one direction, so that here a flat region 23 forms, in which the two working flanks 231, 232 are formed. In this way, the tool end 22 can be passed between the bars or act in slots between the bars. The tool end 22 merges into the shaft 21 by means of a transitional region 25. It can be adjusted over the distance d from the operator, as much the impact force of the percussion mechanism 12 act in the axial direction A on the elastomer body 15 and is to be converted into an impact force in counter-axial direction B. Namely, the distance d is minimal or zero, it is taken from the beginning of the impact movement of the impact energy of the elastomer body 15, so that a correspondingly large impact energy in the counter-axial direction B can be discharged again. This reduces the impact energy effective in the axial direction A accordingly.

If an effective distance d is set, it comes only in the course of the impact movement to a contact between hammer mechanism 12 and elastomer body 15, so that only then can an energy transfer to the elastomer body 15 occur. Accordingly, more impact energy becomes effective in the axial direction A and less impact energy in the axial direction

Elastomer body 15 stored or used for the impact in gegenachsialer direction B.

If the distance d is even chosen so large that in the striking movement of the

Schlagwerks 12 no contact can occur to the elastomer body 15, so there is no impact movement in gegenachsialer direction B instead. In this way, the maximum impact energy in the axial direction A can be used and the hammer device 1 according to the invention can be used in the usual way. In this way, by means of the hammer device 1 according to the invention or the tool 2 according to the invention, a simple and quick release of clamping body, for example, from slitting a grid of a ball mill, by instead of a manual

Cleaning a hammer device 1 can be used. In particular, bumps not only in the axial direction A to drive a clamp body further through a slot, but also in the counter-axial direction B are performed to release a clamp body against its entry direction out of the slots out again. Just this function is previously unknown and can significantly improve the cleaning of such bars.

REFERENCE LIST (part of the description)

A axial direction of the longitudinal axis X

5 B counter-axial direction of the longitudinal axis X.

d variable distance between the front housing 141 and impact energy storage means 15 and between the housing 14 and retaining means 13th

R radial direction perpendicular to the longitudinal axis X.

X longitudinal axis

10

1 (hand-held) hammer device

11 handle

12 percussion

13 holding means for tools

15 132 Closing part, sealing cap

133 Opening for tool 2

14 housing

141 front housing

15 Impact energy storage means, elastomer body, spring, rigid impact body, metal body

20

2 tools

21 shaft

21 'shaft end

22 tool end

25 23 Flat area

231 (indented) working flank for impacts in axial direction A

232 (hook-like) working flank for impacts in counter-axial direction B

24 radial projection of the shaft 21st

25 transition region between the tool end 22 and shaft 21

30

Claims

1. hammer device (1), in particular hand-held hammer device (1), with

an impact mechanism (12) which is designed to act in the axial direction (A) striking a tool (2),

marked by

at least one impact force storage means (15), which is designed to receive a striking force of the percussion mechanism (12) in the axial direction (A) at least partially storing and at least partially deliver it as a striking force in the counter-axial direction (B) again.

2. hammer device (1) according to claim 1,

wherein the impact force storage means (15) is resiliently restoring, preferably resiliently restoring incompressible.

3. hammer device (1) according to claim 1 or 2,

wherein the impact force storage means (15) comprises an elastomeric body (15), preferably consists of an elastomeric body (15), or

wherein the impact force storage means (15) comprises, preferably consists of, a metallic spring (15), preferably a metallic coil spring (15).

4. hammer device (1) according to claim 1,

wherein the impact force storage means (15) is rigidly rebounded.

5. hammer device (1) according to claim 1 or 4,

wherein the impact force storage means (15) comprises, preferably consists of, a rigid impact body (15), preferably a rigid metal body (15).

6. hammer device (1) according to one of the preceding claims,

wherein the impact force storing means (15) is formed via a radial

Projection (24) of the tool (2) to absorb the impact force of the percussion mechanism (12) in the axial direction (A) at least partially storing and at least partially as an impact force in gegenachsialer direction (B) again.

7. Hammer device (1) according to one of the preceding claims,

wherein the impact force storage means (15) is adapted to be arranged by means of a releasable holding means (13) on the remaining hammer device (1).

8. hammer device (1) according to one of the preceding claims,

wherein the impact force storage means (15) opposite to the striking mechanism (12) in

Spaced longitudinally (X) can be arranged so that the strength of the impact force of the striking mechanism (12) on the impact force memory means (15) in axial

Direction (A) can be influenced thereby.

9. hammer device (1) according to one of the preceding claims,

Longitudinal (X) can be arranged so spaced, so that a

Impact force of the impact mechanism (12) on the impact energy storage means (15) in the axial direction (A) can be avoided thereby.

10. Hammer device (1) according to one of claims 8 and 9,

wherein the impact force storage means (15) by means of an adjustable holding means (13) opposite the striking mechanism (12) in the longitudinal direction (X) can be arranged spaced.

11. Tool (2) for use with a hammer device (1) according to one of the preceding claims,

the tool (2) pointing away from the hammer means (1) in the axial direction (A), having a tool end (22) formed thereon Impact force of the striking mechanism (12) at least partially in the counter-axial direction (B) to transmit a body to be processed.

12. Tool (2) according to claim 11,

wherein the tool end (22) has a hook-like working edge (232), preferably in curved form, for the application of blows in the counter-axial direction (B).

13. Tool (2) according to claim 11 or 12,

wherein the tool end (22) has a recessed working edge (231), preferably in concave or retracted form, for the application of strokes in the axial direction (A).

14. Tool (2) according to claim 12 or 13,

wherein at least one working flank (231; 232), preferably both working flanks (231, 232), are formed as a flat region (23) of the tool end (22).

15. Tool (2) according to one of claims 11 to 14,

wherein the tool (2) at least in sections, preferably completely, consists of a thermally coated toughened iron-based alloy.