DE2123040A1 - Electric hammer and hammer - Google Patents

Description

PATENT ADVOCATE DIPL.-PHYS. JOHN SPIES

8 MUNICH 22 KAROLINENSTRASSE 3
TELEPHONE: (0811) 22 6917 TELEGRAM SHORT ADDRESS: PATOMIC MUNICH

Hikoitsu Watanabe

Sanji Gemna

O) OKIO / JAPAN

Electric power hammer and impact tool

this registration becomes the priority
Japanese Patent Application 82 567/1970
of September 22, 1970)

The invention relates to an electric motor hammer and percussion tool which can be used in particular for percussion or driving operations in construction work. In the usual impact or driving devices currently used, an in
a guide rod inserted weight hammer by means of a winch along the guide rod up to a corresponding one
Lifted high and then dropped by releasing a lock in the winch; or a rod-shaped hammer
is lifted up by the application of explosive force generated within a cylinder and then dropped down.

In such common devices, the hammer is unable to move upward on its own, and it
It is therefore necessary to lift the hammer with the help of a special winch or similar device or by means of an explosive force generated in a cylinder. Own naturally

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such devices are relatively large in size. So far no hammer has been made available, which can move indefinitely up to any desired height by means of a simple self-propelled mechanism can.

The invention provides an electric power hammer and percussion tool made available, in which the impact body according to the invention itself consists of motors or comprises such and used to generate an impact force for the purpose of impact work, the motors can be raised to any desired height without any separate or additional lifting device, for example in the manner of a winch or the like. is required.

In the case of the electric power hammer and impact tool according to the invention the motors provided therein move two opposing roles via a reduction gear Directions in rotational movement, so that it is along a guide rod, rail or the like. That of and between them Rolling is held, can be moved upwards; powerful shocks are obtained here when the tool according to the invention executes an accelerated downward movement due to its own weight.

In a preferred embodiment of the invention, the electric power hammer and percussion tool is for the purpose of automatic Falling or downward movement of the tool provided with a striking cap, in the lower end of each can be introduced with impact or impact forces to be applied object, and provided the upper end with a hole is in which the guide rod, rail or the like. inserted and with which aie can be releasably connectedj where in a preferred embodiment of the device according to the invention the guide rod, rail or the like. with a case or Reversing plate is provided which is free by any one

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the in the desired manner on the guide rod, rail or the like. provided pail or reverse plate holes can be inserted can, so that it operates a control lever or swings down, to prevent the hammer from moving up and down control, thereby making upward and downward movements in the required manner with a high driving and impacting effect, respectively can be repeated.

In addition, the electric power hammer and percussion tool provided by the invention is intended to be those described above Perform punctures with the help of a very simple and inexpensive to manufacture and / or operate mechanism.

In accordance with the invention, a hammer is given the ability to lift itself so that the hammer can go along indefinitely a guide rod, rail or the like. can be raised by possibly adding more Pührungsstangen, rails or the like. can be added or appended as required; In this way, the impact or impact force can be as desired Way to be changed. By repeating the up and down movements of the hammer, it is possible to reduce the striking or Driving work with a simple striking device and a corresponding simple striking mechanism is very effective perform. This is one of the advantages of the present invention.

The invention is illustrated below with the aid of one shown in FIGS to 12 of the drawing illustrated in principle particularly preferred exemplary embodiment, whereby the above mentioned as well as further features, advantages and punctures of the invention in detail become apparent. Show it?

Pig. 1 is a front view of an electric hammer which is an embodiment of the present invention Electric power hammer and percussion tool;

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Pig. 2 shows a plan view of the device of the Pig 1; Pig. Figure 3 is a side view of the Pig device. 1;

Pig. 4 to 9 figures which illustrate how the rollers are adjusted by differential gears, and the ratios between Differential plates show, due to which the differential actuation. Control parts and a control lever started or started; show in detail:

Pig. 4 the holding of a guide rod by rolling;

Pig. 5 the type of release of the guide rod from the Support by the rollers;

Pig. 6 is a front view showing part of the Pig. 1 represents;

Pig. 7 is a plan view of the Pig device. 6; Pig. Figure 8 is a front view of the Pig device. 5;

Pig. 9 is a plan view of the Pig device. 8th;

Pig. 10 a plan view of the guide rod and a striking cap ;

Pig.11 a front view of the device according to Pig.10; and

Pig.12 an illustration of the use of the electric hammer Front view.

A particularly preferred exemplary embodiment of the invention will now be described below with reference to the drawing explained in more detail:

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The electric hammer shown in FIGS. 1 to 3 has two motors 13 and 13 '»which are arranged parallel to one another and between an upper and lower mounting plate 11 and are attached, which as their common carrier together with vertically arranged bolts and nuts are used. Both mounting plates 11 and 12 are provided with openings 15 and 16, which are arranged in the center of gravity and opposite one another, so that a guide rod can be inserted through these openings.

On the upper fastening plate 11 there are two rollers 17 »17 in a manner described below so arranged on bearing plates that they the guide rod 14 in the Hold opening 15 described above. Furthermore, known reduction gears 18, 18 are provided opposite one another, so that the rollers are driven via this reduction gear; the reducers come with bolts and nuts so positionally arranged that the center of gravity of the entire unit with respect to the openings 15 and 16 for the guide rod 14 is balanced.

On the of the reduction gears 18, 18 via the upper mounting plate 11 extending shafts 19 »19 are two pairs of reduction or transmission gears 20, 20 and 21, 21 arranged to engage the roller drives described below.

The reduction or transmission gears 20, 20 and 21, 21 move the rollers 17, 17 via four roller drives 22, 22 and 23, 23 in rotation, which are in differential engagement.

The shafts 19 of the reduction gears and the shafts 24 of the rollers are supported at both ends by the bearing plates 25 »25 held, the outer end of each in a suitable Way is bent and attached to the upper mounting plate 11 Bind. These waves are as below is described, according to their spatial relationships in correct

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Way formed and arranged. On the other hand, there are adjustment holes 26 for the shafts 24 of the rollers in the bearing plates 25 intended; these insertion holes are elliptical, um.die rollers 24 to be able to adjust by means of the differential gears, on the basis of the calculation of the Length and direction of such an adjustment.

The shafts 24 of the rollers have l'eile, around the central Opening 15 for the guide rod 14 run around which anti-slip material such as leather or synthetic rubber is wound where the rollers 17, 17 face each other are attached. In principle, the anti-slip material can be attached to the rollers and / or the guide rod. However, it is It is preferable to attach the anti-slip material to the rollers so that the guide bar without significant resistance can slide through the openings 15 and 16.

Differential plates 27 and 28 are for causing displacement or displacement of the differential gears mounted near the two ends of the rollers so that they rotatable with respect to the rollers and displaceable parallel to one another. Two control parts 31, 31 are in control window 29 and 30 are used, which in turn are provided on the differential plates 27 and 28. The control parts 31 are on together attached to a control lever 32 so that they can be operated simultaneously with the latter.

On the shafts 24 of the rollers are four roller drives 22, 22 and 23, 23 near the two ends of the differential plates 27 and 28 fixedly arranged in such a way that they mesh with the reduction and transmission gears 20, 20 and 21, 21, respectively stand. Furthermore, rings 34 are arranged on the shafts 24 of the rollers, each of which has a spring at one end 33 holds between the roller drives 22, 22 and 23 »23 mounted on the shafts of the rollers on the one hand and the bearing plates 25 act on the other hand. The spring 33 is on the other

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End attached to the angled part of each bearing plate 25, so that it can pull its traction on the gears or roller drives on the shaft 24 of the rollers and the reduction or transmission gears transmits, whereby the reduction or transmission gears held in positive engagement and the Shafts set against the outer corners of the adjustment holes 26 in the bearing plate 25 at any time by a corresponding force or held.

On the lower surface of the lower mounting plate 12 a shock absorber 35 is attached, which has a hole 36 into which the guide rod H in accordance with the Hole 16 for the guide rod is inserted.

On the shafts 37 and 37 'of the electric motors 13 and 13, respectively pulleys 38 and 38 'are arranged, the rotation of which a ^ x the reduction gears 18, 18 'is transmitted via belts 39, 39', since these belts over both pulleys 38, 38 'and 40, 40 'run.

In the pig. 4 to 9 shows how the rollers by means of the differential gears and the relationships between the Differential plates, the control parts and the control lever can be adjusted or moved. Like from Pig. 4 can be seen is, the control lever is pivoted upward to pivot the control member alongside or horizontally so that the differential plates 27 and 28 are subjected to such force that they pass through the edges of the control windows 29 and 30, respectively are moved and as a result the rollers 17 are forcefully pressed against the inner side of the adjustment holes 26, which together with the shafts 24 of the rollers by pulling the springs 33 against the outer corners of the adjustment holes and into them outer corners had been kept.

In this way it is effected, as the person skilled in the art does in detail even without a detailed explanation of the in FIG. 4

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to 9 construction shown that the facing rollers 17 are brought closer to one another be, so that they inevitably capture or -press and hold the guide rod 14 between them. On the other hand, as shown in Fig. 5, the control parts 31 erected, what happens by pivoting the control lever 32 down, then the differential plates 27 and 28 are released so far from the control of the control part 31 that the rollers 17 again together with their shafts 24 are moved into the outer corner of the adjustment holes 26. In this way, the rollers 17 separated from each other in such a way that they release the guide rod and no longer hold it.

In the manner described above, a distance between the rollers 17, 17 can be adjusted to the extent that a difference exists between the width and length of the control part 31, whereby the holding and releasing of the guide rod 14 by or is controlled by the roles.

Figures 10 and 11 show the guide rod 14 passing through the holes 15 and 16 in the upper and lower mounting plates and 12 and through the hole 36 provided in the shock absorber 35 as well as between the two facing rollers 17, 17

runs. The guide rod is square so it can easily be held between the rollers 17. In addition, holes 137, 137 are for a drop and reverse plate, respectively 138 shown; there can be as many such holes on the guide rod at predetermined locations as It is desirable to insert the drop or reverse plate 138 into one of these holes at a variety of locations.

At the lower end of the guide rod 14 there is a striking cap 141 provided, which is designed strong enough and has a recessed area 139 at the lower end, the any object to be hit with the hammer can accommodate; at the upper end of the striking cap is a plug-in

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Hole HO is formed, in which the guide rod 14 is detachable can be inserted.

In Fig. 12 is an application match of the invention Device shown illustrating its use. First, any object that is hit with a hammer or is to be driven into the Brdboden W, for example a post 142 in the recessed area 139 on inserted lower end of the striking cap and erected on the ground W.

Then the electric hammer is placed on the guide rod 14, so that it runs over this guide rod, which in turn is inserted into the receiving hole 140 at the lower end will; also, the fall or reversal plate 138 is in any of the holes provided at predetermined desired locations along the guide rod 14.

The control lever is now pivoted upwards so that the relationships shown in FIGS. 4, 6 and 7 result, so the differential plates counteract by the interaction of the control part 31 with the edges of the control window the pulling action of the springs 33 parallel to each other, and at the same time are shifted towards each other, whereby the rollers 17, 17 grasp or catch the guide rod 14 between them and hold. The motors 13 »13 are put into operation to set the rollers 17, 17 in rotation so that the motors be pulled up along the guide rod 14. if the drop or reverse plate 38 is reached, the control lever 32 begins to strike against this plate 138 and becomes pivoted downwards during the further upward movement of the motors. In this way, the control part 31 is erected, so that the relationships shown in FIGS. 5, 8 and 9 result, due to which the springs 33 the differential plates 27, 28 can move parallel to each other, but in opposite directions due to their pulling action, until the control windows only overlap as much as the

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Width of the control part 31 corresponds to (see in particular Fig. 9) " As a result, the rollers 17 are moved so far apart that they no longer hold the guide rod but release it.

Due to the release of the guide rod through the clumps, the hammer begins to fall down due to its own weight along the guide rod 14 and thus serves as a strike or. Driving device. To move the hammer that has fallen down upwards again, the control lever is pivoted upwards so that the relationships shown in FIGS. 4, 6 and 7 are again obtained. By appropriately actuating the control lever 32, the upward and downward movements can consequently be repeated. For this purpose, it is also possible to provide the control lever 32 with a second arm which runs downward in FIG strikes the striking cap 141 in such a way that the lower arm is moved upwards and thus the upper arm of the control lever 32 (which is shown in the drawing) is also moved upwards so that the values shown in FIGS. 4? Ratios 6 and 7 fare, in which the rollers 17 with the guide rod ungs Hingzdff in contact, in order to move the hammer upwardly "

Let us then consider yet another exemplary embodiment of FIG Invention explained. In the first exemplary embodiment explained above, the rollers 17 »17 are driven by the motors 13, 13 operated via separate, known reduction gears 18} however, this is not necessary in every case. For example, the pulleys can be attached directly to the shafts the reduction gear or also directly to the shafts 19 on which the gears 20 are attached, be coupled. the deep pulleys, the pulleys of the motors 13, 13 'can be connected directly via belts as a transmission medium be. In this case, the speed can be reduced by changing the diameter of the pulley be reached or by the fact that the motor reduction shafts

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mesh with reduction gears, commonly known as speed reducers are. Therefore, reduction gears are not absolutely necessary for the invention

In addition, the structure of the device according to the invention can be simplified even more, since reduction gear or Gear shafts, reduction gears or gears and / or roller drives or gears or gears, which with one another Engaging is not essential if pulleys and belts are used as a means of reducing speed be used in such a way that the driving force of the motor is directly from the motor pulleys on the rollers Pulleys are transmitted via intervening pulleys without the need for therebetween also to provide reduction gears or gear shafts or toothed wheels.

In this case, the adjustment hole 26 in the bearing plate 25 is to be designed as a rectangle that runs along a circumferential circle, whose center is the motor shaft. This is necessary because of the circular movement of the roller shaft 19, which is so runs that the motor shaft forms the center.

It is also in contrast to the exemplary embodiment described first of the invention in which two electric motors

13 and 13 'are used, not absolutely necessary, to provide two such motors, rather one of these motors can be omitted if a single motor is concerned the weight and the drive or input force is sufficient. In this case, however, this one motor must be used with the help of a counterweight in relation to the guide rod

14 are balanced; this counterweight or a corresponding one heavy equipment is conveniently horizontal on the same support but opposite to the one motor attached. It is also necessary or possible for one of the two facing rollers 17 to be replaced by a separate connection

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drive device as they are in opposite directions Directions must be offset in rotation. In other words, it is not essential for the invention two motors are required.

Of course, within the scope of the subject matter of the invention as well as the general inventive concept, the most varied embodiments of the invention are possible, which are shown in FIG various ways from the described preferred embodiments may differ.

In summary, the invention relates to an electric motor hammer and hammer tool that enables striking with powerful impacts generated by the falling of one or more motors under acceleration by its own weight, the input force of this motor or motors being added is used to move the hammer itself up to any desired height, while the weight of this motor or these motors is used for the striking process. Preferably, the device according to the invention comprises two engines, the balanced are mounted on a support, and two driven by these motors via reduction gears · ■ If and held between the two rollers guide bar · The rollers are set in rotation, while holding the guide rod until they have reached the predetermined height by moving along the guide rod; there the motors are automatically released from being held by the guide rod, and the power hammer begins to move downwards as a result of its own weight in order to carry out a powerful push. By repeating such upward and downward movements of the motor or motors, the percussion operation can be continued at will.

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Claims (10)

PATENT Attorney ÜIPL.-PHYS. JOHANNES SPIÖS '23040 8 MUNICH 22 · KAROLINENSTRASSE 3 TELEPHONE: (0811) 226917 · SHORT TELEGRAM ADDRESS: PATOMIC MUNICH: 73 Hikoitsu Watanabe SanJi Gemna TOKIO / JAPAN patent claims 1. Electric power hammer and percussion tool, characterized by two synchronously driven electric motors (13> 13 ^r ) fixed in parallel on the same carrier, the two rollers (17) facing each other via a speed-reducing device (18) in each case in rotation move that they perform an upward movement and by their own weight along a guide rod (14), rail or the like inserted between the rollers and extending between them. fall down or be lowered to generate a strong driving force. 2. Device according to claim 1, characterized in that two differential plates (27, 28) rotatable or displaceable opposite and parallel to each other on two facing roller shafts (24) near the two rollers (17) fastened thereon are arranged in such a way that the differential gears or gears (21) or the rollers with the drive wheels provided on them 209813/0951 can be adjusted or pivoted so that the rollers can be brought into or out of engagement with the guide rod. 3. Device according to claim 2, characterized by control windows (29, 30) in or on the differential plates, in which the control parts (31) engage, on which a control lever (32) is attached, the control parts are set by pivoting it up or down can be that the guide rod is held or released by the rollers, so that the hammer moves up or down. 4. Device according to claim. 1 »being the hitting through Self-upward movement of the hammer and downward movement of the hammer by its own weight takes place automatically, whereby the motor hammer at the lower end with a Striking cap (141) is provided, which has a removed area (139) into which any in the ground (W) to be driven object (142) can be used, as well as with an insertion hole (140) for detachable insertion the guide rod, which is provided with holes (137) at some predetermined locations, in or through which a Drop or reversal plate (138) can be inserted in such a way that that the control lever attached to the control unit through. Strike downwards against the drop or reverse plate is pivoted. 5. Device according to one of claims 1-4, characterized by a single electric motor attached to the carrier, with two facing rollers (17), between which the guide rod (14) is held or released is, the motor is connected to the rollers so that it is lifted or along the guide rod is moved downwards. 6. Device according to claim 1 or 5> characterized by 209813 / Ö951 electrical or electromagnetic changeover switches that do so are provided that they are replaced by an EaIX or reversal plate operated by the guide rod and is inserted or arranged transversely to this in order to reverse the electric motors 7. Device according to one of claims 1-6, characterized in that that the electric motor or motors are designed as linear motors, the iHihrungsstange preferably forms the stator. 8. Device according to one of claims 1-7 »characterized in that that the at least one rope of the motor, in particular of the linear motor, preferably its runner performing or comprehensive hammer is also moved in the downward direction by the electric motor drive. 9. Device according to claim 8, characterized in that the motor or motors are designed and / or connected in such a way that when the hammer moves downward, it becomes stronger than is accelerated by the acceleration of gravity, preferably experiences an acceleration that is a multiple the acceleration due to gravity. 10. Device according to one of claims 1-7, characterized in that that instead of one or more electric motors, other motors, for example hydraulic or Internal combustion engines are provided. 209813/0951