DE2359708A1 - PERCUSSION DEVICE, ESPECIALLY FOR PUNCHING AND ROTATING - Google Patents

Description

235970

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This device resides in two major areas

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on the one hand they are very run and on the other hand they have, she has great reactivity, i.e. her body has the Oscillations, with large amplitudes over intermediate legends Transfers handles to the hands of the operator. The noise leads to deafness over time and reactivity is what causes articular rheumatism, yes even for small wrists.

The two phenomena of noise and reactivity are connected to each other. It's the context of this To understand phenomena, it is sufficient to state that the noise from the air flowing out of the pneumatic. Devices, from the stroke of the A'ei'kzeuges on the to be processed Material and from the stroke of the piston or the anvil stems from the tool. In the case of the latter two The propagation of the noise takes place through the causes Vibrations in the inner parts up to the surface of the Tool and the body of the device. The reactivity νση comes from the vibrations of the body of the device, so that by reducing the vibrations at the same time reduces the noise of the device and the harshness

The present invention has set itself the task of the "two ö.g * power rush to eliminate.

For this purpose it is provided according to the invention that the body of the device is made up of two parts,

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an inner first batch, those that serve for the operation Contains elements and an outer second part that is attached to the first batch is elastically suspended, and this from the top of the device to the top of the tool completely encloses, with the second part carrying handles or fasteners firmly attached to it.

Due to the presence of the second lot, it can be single the lower part of the tool, which is its working part represents that transmit vibrations directly to the air surrounding the device.

In a preferred embodiment, this is against this Remedy created that a deformable sheath is provided is that at the bottom of the / outer part of the Body of the device is attached and the tool over encloses its entire length, i.e. from its upper part to the ground when the device is in operation.

This sheathing can, for example, have the shape of a bellows, a succession of straps or a spiral spring. It is made of reinforced or non-reinforced rubber or plastic, vtyei it can be reinforced by means of seders, ropes or a metal mesh.

These known devices have here the

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Advantage that they affect the outer part, its vibrations are considerably damped, are mounted and not directly on the elements used for operation, as is the case with the known devices is the case. Your behavior is therefore inevitably much improved.

There is an advantageous further development of the invention in that the outer part of the body of the device carries a locking device to prevent falling out of the tool on the ground is attached when the device is lifted.

The locking device would be as with the. known Devices arranged on the inner part, so when pulling out the tool in the event of a jam Difficulties arise as a result of the impacts exerted on the tool attenuating suspension between the both parts of the body. The same disadvantage is found with certain new devices that have handles with a Damping device are equipped, as in this case also a disadvantageous elastic suspension between Handle and lock is present.

The advantage of attaching the lock to the outer part is that it is now possible

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on the. Tool via the lock, undamped vibrations to pull it out of the material if it is held and jammed

In a preferred embodiment of the invention the inside of the outer part of the body of the device with sound-absorbing materials. These glued on, Mechanically fastened or sprayed-on materials, together with the sheathing, create a, complete Attenuation of the noise caused by the impact of the tool on the material to be processed and the impact of the piston or Anvil on the tool.

In the case of pneumatic devices, a silencer is preferred intended for the air flow, that of the air flow imposes a serpentine path in front of its outlet. This silencer is made by attaching baffles or realized by correctly arranging plates with a more or less strongly curved shape. The great available volume between the two parts of the body of the device is for accommodating the flow silencer obviously very beneficial. Allows various arrangements in which the airway can be very elongated without reducing the width of the lines must become. These large lines avoid that

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Occurrence of icing, which occurs very often when the outflow is through small openings and very is annoying because it blocks the device for a few minutes in cold and damp weather.

It is also useful that the supply of the fluid and the possible return of the fluid through flexible hoses takes place, which are firmly connected to the outer part of the body of the device and which are deformable Lines to the inner part of the body are continued The ones with the outer part e.g. exactly below Flexible hoses connected to a handle are less stressed by blows or impacts than with the immediate Connecting with the inner lot is the case. Therefore the connection of the flexible hose is more resistant than with the known devices

The deformable lines consist e.g. of apart ^ drawable pipes or elastic sleeves.

It should be noted that the fluid-filled and Deformable pipes arranged between the two parts of the body of the device include a suspension rope represent in axial seal. This very interesting feature makes it possible to understand the importance of the suspension to reduce springs securing in this direction.

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It is essential, however, to keep the lateral springs between to keep the two parts, in addition to the suspension also serve for the axial guidance of the inner part in relation to the outer part »

If necessary, you can go to the lower section of the outer part of the body compared to the area of the inner part of the body guiding the tool an elastic Provide stop *

The invention will now be explained with reference to the schematic drawing which illustrates several embodiments of the invention. Show it:

Fig. 1 shows the principle of the suspension of the outer part on the inner part, '

Fig. 2, 3, 4

different design variants of a casing surrounding the tool,

Figures 5, 6, 7

different embodiments of the airway through a flow silencer,

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8 shows a device equipped with a pivotable lock with a lever, and FIG

Figures 9, 10, 11

different design variants of the device for the supply of compressed air with a pneumatic Device.

The figures are schematic as well as very for clarity drawn in a simplified manner, and the inessentials have been left out. In reality, one device unites in combination several different devices, as provided according to the invention and in the drawing each for itself are shown.

The figures all represent a pneumatic concrete breaker, which is used as an example of a percussion device for rotating Pushing and hitting is taken. This device contains a body 2, which has a tool at its lower part 3 carries.

According to the invention, the body 2 is formed from two parts. An inner first part 4 contains the elements that are used for operation, for example the distribution of the fluid, a piston, possibly an anvil and the control for a continuous or by means of a

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Gesparre's interrupted circulation; it also serves to guide the tool ©)! 3,

An outer part 5, which is elastic on the first part is hung on, form a case that is the first Section from the top to the top of the Tool 3 completely encloses. This second batch 5 can carry handles 6 firmly and rigidly connected to it, as shown in Figures 8-11. She can too Fastening means for fastening the device to his bear like an arm or a cantilever.

The outer part 5 also carries a locking gate device 7, as shown in FIG. 8, this locking device 7, which is used to prevent the tool from falling out 3 is attached to the floor when the device is lifted, is in the illustrated embodiment, a pivotable locking device with a lever, as they are usually used in concrete breakers. It can also be equipped with an eccentric or a pusher or slide or of a completely different nature without departing from the invention.

A deformable sheath 8 can be at the lower area attached to the outer part 5 of the body 2 of the device be as shown in Figures 2-4.

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This casing 8 encloses the tool 3 on its whole length, i.e. τοπ its upper part to the bottom 9t when the device is in operation

According to the various embodiments shown, the casing 8 has the shape of a bellows (Fig. 2), a succession of lamellas or belts (Fig. 3) or a spiral spring (Fig. 4) · It is made of reinforced or reinforced or non-reinforced or non-reinforced Rubber or plastic made by means of springs, ropes or a metal mesh; can be strengthened.

The outer part 5 of the body 2 of the device is with acoustically insulating materials provided or clad, which are not shown in the drawing. This matter are glued on, mechanically fastened or sprayed on.

In the case of pneumatic devices, there is a flow silencer in the available volume between the outer one Part 5 of the body 2 and its inner part 4 are provided. This silencer is made by attaching baffles or by arranging plates with more or less strongly curved shape realized close to each other in such a way that the outflowing air takes a serpentine or sinuscidal path, like e.g. Path · 1oa, 1ob and 1oc in FIGS. 5 to 7 * are only a few represent exemplary possibilities.

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Per way 1oa contains two loops in front of the air outlet. The path 1ob consists of an ascending zigzag path and a subsequent downward zic-zack cock together. The path 1oc is limited to a single ■ screw-like ascending path ·

The air outlet through openings 12, which are provided for this purpose in the outer part 5, takes place at one or more points on the outer part 5, the respective position of which depends on the type and structure of the device and also on whether an operator is present is or not, as well as by chosen airway.

The supply of the fluid and the possible return of the Fluids in the hydraulic devices are made by flexible Tubes 13 »those with the outer part 5 of the body 2 3.B. fixed below the handles bsw ·. are rigid like it in the ^ ig. 9 to 11 is shown.

fluid arriving through the flexible hose 13 follows a conduit or tube 14 provided with a bore, which is rigid or flexible and the fluid above the Device leads.

Sound here is made of the air by a flexible, deformable

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Line passed into the interior of the body 3, in its inner part 4.

Depending on the embodiment, this is "flexible or deformable Lead from an extendable tube or telescopic tube 15a (Fig. 9), helical or cylindrical Line 15b made of metal G? Ig. 10) or one elastic sleeve 15c (Fig. 11) is formed.

The suspension and the axial guidance of the inner part are carried out on the sides of the device by means of lateral springs 16, the material and shape of which can be any.

If necessary, you can go to the lower section of the outer part 5 the lower area of the inner part 4, which guides the tool 3, provide an elastic stop opposite.

One or more springs, the shape and material of which are arbitrary or indifferent, are around the extendable Tube (telescopic tube) 15 arranged around in order to obtain the elasticity that in the other embodiments through the helical pipe 15b or the sleeve 15c is obtained.

All of the embodiments described above contribute to the

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Reduction of noise and vibrations with «The elastic suspension of the elements used for operation on an outer housing 5 limits the vibrations to the level of the body 3 as well as the noise propagating from the vibrations. Cladding the housing 5 with sound-absorbing materials further improves the reduction in noise. The casing 8 also ensures sound insulation at the level of the tool 3j, while the sound absorber filters away the noise * resulting from the flow of air flowing out of the pneumatic devices. A device equipped with the advantages of the invention, a concrete crusher pd.-like., Therefore emits little noise and has a very low reactivity _o

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Claims (6)

- 14 - Claims 1. Percussion device, especially for thrusting and rotating Hitting, characterized in that the body of the device is made up of two parts, an inner first part, which contains the elements used for operation, and one outer second part, which is elastically suspended from the first part and this from the top of the device completely encloses up to the upper part of the tool, with the second part firmly attached to it handles or fasteners. 2. Percussion device according to claim i, characterized in that that a deformable T & uBantelung provided which is attached to the lower portion of the outer portion of the body of the device and the tool above encloses its entire length, i.e. from its top to the floor when the device is in operation. 3 · Percussion device according to claim. 1 or 2, thereby characterized in that the outer part of the body of the device carries a locking device which is used to - 15 409823/0880 Preventing the tool from falling out on the When the device is raised. 4. Percussion device according to one of claims 1 to 3, characterized in that the inside of the outer part of the body of the device with sound-absorbing materials is provided. 5. Percussion device according to one of claims 1 to 4, which is operated pneumatically, characterized by that a silencer is provided for the air flow, that of the air flow in front of its outlet a snake-like one Forcing away. 6. Percussion device according to one of claims 1 to 5 » characterized in that the supply of the fluid and the possible return of the fluid diireh flexible Hoses are made, which are firmly connected to the äiaß © rea part of the body of the device and which are deformable Lines to the inner part of the body continued 7 · Percussion device according to one of claims Λ to 6, 'characterized in that lateral springs are arranged between the two parts of its body, which so- _ 16 - 409823/0 88 0 probably serve for the suspension as well as for the axial guidance of the inner part in relation to the outer part · 80 percussion device according to one of claims 1 "to 7i characterized in that an elastic stop is provided in the lower region of the outer part of the body which is opposite to the area of the inner part of the body guiding the tool. Λ09823 / 08 8 0