EP0960981A2 - Mobile working apparatus and assembling set for an operating arm for a mobile working apparatus - Google Patents

Abstract

A mobile, self propelled demolition machine has a telescopic arm (10) with a cutting head eg. cutting shears. The range of operation of the machine is enhanced by mounting the cutting head on a pivot mounted extension to reach into the structure to be broken up. The telescopic arm is fitted to the machine via adapters and the whole system is operated by hydraulics. Different attachments can be fitted eg. excavator buckets for excavating under ground level. For close up work the arm is retracted.

Description

Technical field

The invention relates to a mobile implement, particularly for demolition work suitable is.

State of the art

Demolition excavators are known which have a demolition tool, e.g. a Demolition shears, wear. The boom has two or more against each other swiveling sections to the height at which the demolition tool works, is determined by the angular position of the two sections: Demolition tools work at great heights, then the upper section of the Outrigger with the swung up lower section an obtuse angle. Should the demolition tool work at a lower height, then the upper section pivoted downwards relative to the lower section. But that’s how it works Tool tipping moment increased. This creates the risk that the Tool tipped over. This danger can be caused by swiveling the lower one back Section of the boom can only be counteracted to a limited extent. Such demolition excavators therefore have only a limited working area in which they work stably can. You need a heavy chassis that can prevent tipping.

DE-U-296 06 337.1 describes a telescopically extendable machine part (Boom) that can be attached to an arm of a mobile implement such as an excavator is. The machine part consists of three telescoping sections an outer, a middle and an inner section. The sections are by means of extendable with a hydraulic actuating cylinder. It is attached using a Adapter that is attached to the outer section. By appropriate choice of Adapters from a plurality of adapter types can be telescopically extendable Machine parts can be attached to different types of mobile work equipment. Sitting at the end of the inner section protruding from the middle section a tool, e.g. a clamshell bucket.

DE-A-196 13 700 describes a telescopically extendable machine part an outer, a middle and an inner section. The machine part will extended by means of a hydraulic cylinder and a cable. The hydraulic cylinder is arranged off-center in the machine part. Inside the machine part is further an energy transmission line for supplying energy to one on the machine part seated tool.

Excavators with extendable booms are known, in which the boom with a Clamshell buckets are lowered into a deep pit to dig soil from that pit to dig out. There are also known mobile working devices in which a extendable boom for demolition work on tall buildings with one Demolition tools such as demolition shears are extended very far up. For these different applications each become specialized, mobile work tools used. For each of the above tasks, therefore, there must be an individual The task of specialized work equipment.

Also known are telescopic cranes with an upwardly projecting telescope extendable boom.

Disclosure of the invention

The invention has for its object an improved and simplified mobile To create work equipment for demolition work.

According to the invention, this object is achieved by a mobile working device for Demolition purposes with an upright, supported on the implement telescopically extendable machine part, the demolition means at its upper end wearing.

According to the invention, a demolition device is a mobile work tool with a Telescopic arm is used, which has a demolition agent at its end Demolition tool, e.g. demolition shears. To work at great heights, the telescopic arm with the telescopically extendable machine part in Extended lengthwise. When working at a lower height, it becomes telescopic extendable machine part retracted straight. It is not required as with usual demolition excavators an upper section of the boom against the lower Swing section out of the stretched position so that the entire Height range can be covered in which the demolition equipment should work.

In a further embodiment of the invention, it is possible with a single implement to perform various tasks by suitable retrofitting.

This can be achieved with an implement of the type mentioned at the outset by that the telescopically extendable machine part optionally on the implement by means a support module protruding upwards or by means of an adapter on one Arm of the implement is attachable.

(a) einen durch hydraulische Stellmittel teleskopartig ausfahrbaren Maschinenteil,

(b) ein Stützmodul zum Abstützen des teleskopartig ausfahrbaren Maschinenteils nach oben ragend auf dem mobilen Arbeitsgerät,

(c) einen Adapter zum Anbringen des äußeren Abschnitts des teleskopartig ausfahrbaren Maschinenteils (10) an einem Arm (92) eines mobilen Arbeitsgerätes, und

(d) Adapterstücke, die wahlweise an das äußere Ende des innersten Abschnitts (16) des teleskopartig ausfahrbaren Maschinenteils ansetzbar sind zur Anbringung von unterschiedlichen Werkzeugen, darunter wenigstens ein Adapterstück zum Anbringen von Abbruchmitteln, und Herstellung einer Wirkverbindung zu diesen.

For this purpose, the invention provides a kit for an extendable working arm in mobile working devices, comprising:

(a) a machine part which can be extended telescopically by hydraulic actuating means,

(b) a support module for supporting the telescopically extendable machine part projecting upwards on the mobile working device,

(c) an adapter for attaching the outer portion of the telescopically extendable machine part (10) to an arm (92) of a mobile implement, and

(d) adapter pieces, which can optionally be attached to the outer end of the innermost section (16) of the telescopically extendable machine part, for attaching different tools, including at least one adapter piece for attaching demolition means, and for establishing an operative connection to them.

Embodiments of the invention are the subject of further dependent claims.

An embodiment of the invention is below with reference to the associated drawings explained in more detail.

Brief description of the drawings

Fig. 1

shows schematically a kit for an extendable working arm mobile work tools.

Fig. 2

schematically shows a telescopic machine part in fully retracted condition.

Fig. 3

shows the telescopic machine part in full extended state.

Fig. 4

shows a cross section of the adapter and the outer, on the cantilever arm the attachable section of the telescopically extendable Machine part.

Fig. 5

shows a side view of the adapter of Fig.4.

Fig. 6

is a schematic representation of an implement with a by means of Adapters attached to a cantilever arm, extendable telescopically Machine part, the machine part being retractable into a deep pit.

Fig. 7

is a schematic representation of an implement with an under Use of the telescopic machine part and others Components of the kit of Fig. 1 constructed, extendable upwards Boom for demolition work.

Fig. 8

is a schematic representation of an implement similar to Figure 7, wherein the support module also serves as an extension piece, which the Boom extended.

Fig. 9

shows a demolition excavator in different positions of the boom a boom designed as a telescopically extendable machine part, wherein a demolition tool sits on a pivotable boom arm.

Fig. 10

shows schematically the electro-hydraulic control of the boom arm and the demolition shear.

Fig. 11

shows an embodiment similar to Figures 9 and 10, in which to enlarge the swivel ranges of the boom arm and demolition tool hydraulic actuators on the boom arm or Demolition tool via a kinematic transmission with coupling and Attack the swingarm.

Fig. 12

shows an embodiment with a mobile working device, the one has two-part arm, with a support module for a telescopic extendable machine part releasably instead of the upper section of the arm the lower section of the arm is attached.

Preferred embodiments of the invention

In Fig.1 with 10 as part of the kit is a telescopic machine part in Shape of a boom with three sections. The machine part 10 contains an outer section 12, a middle section 14 and an inner section 16. The kit also contains an adapter 18 extendable machine part 10, as will be described, on the arm of a mobile Working tools such as an excavator can be attached. The kit still contains one Support module 20. The support module 20 is at the implement end of the outer Section 12 of the telescopically extendable machine part 10 attached. About the Support module 20, the telescopically extendable machine part 10 can be pivoted on the be supported on mobile work equipment. A support body 22 can be telescoped to the extendable machine part 10 are attached. On this support body 22 can hydraulic lifting cylinder are articulated in a manner to be described. This Lift cylinder supports the extendable machine part 10 on the mobile working device. The kit of FIG. 1 contains a further support module 24. The support module 24 is like this formed that it is the telescopically extendable machine part 10 by another, considerable distance extended. Finally, the kit contains two adapter pieces 26 and 28. The adapter pieces 26 and 28 are attached to the inner portion 16 of the telescopically extendable machine part 10 on the implement facing away from flanged front end of section 16. Allow the adapter pieces 26 and 28 the attachment of a tool, e.g. demolition shears or a gripper (Clamshell grab). The adapter pieces are also compatible with the inside or outside of the Machine part 10 led power lines connected to actuate the tools.

2 and 3 show the telescopically extendable machine part 10 in the retracted and in the extended state, parts of the different sections at 30, 32 in FIG and 34 are cut out. The extendable machine part 10 is of the type above mentioned DE-A-196 13 700 built.

The middle section 14 is opposite the outer section 12 by a Hydraulic cylinder 36 moved. The cylinder case 38 of the hydraulic cylinder 36 is firmly connected to the central section 14. The cylinder 40 of the hydraulic cylinder 36 is connected to the outer section 12 at a pivot point 42. The (not visible) piston rod of the hydraulic cylinder 36 runs in the cylinder box 38.

The inner section 16 is opposite the middle section 14 by a double Cable can be moved. A first rope 40 of the double rope pull runs from a first Attachment point 42 on the outer portion 12 via a on the tool side, 2 and 3 left end of the middle section 14 fastened first deflection roller 44 a second attachment point 46 at the central portion. 14. A second rope 48 the double cable runs from a third attachment point 50 to the inner one Section 16 on an on the implement side, in Fig.2 and 3 right end of middle section 14 attached second guide roller 52 to a second Attachment point 54 to the outer portion 12.

When the middle section 14 is extended to the left in FIGS outer section 12 by means of the hydraulic cylinder 36 becomes the inner section 16 also pulled out of the middle section 14 to the left by the rope 40. When moving the middle section 14 to the right in Fig.2 and 3 in the outer Section 12, the inner section 16 is simultaneously through the rope 48 in the middle section 14 drawn.

4 and 5 show in detail an adapter as part of the kit of Fig.1. Of the Adapter is used to attach the telescopically extendable machine part 10 to the Arm of a mobile working device like an excavator. The adapter is of a similar type like the adapter in DE-U-296 06 337.1.

The adapter 18 has a U-profile 56 with a base plate 58 and two side cheeks 60 and 62 on. Are between base plate 58 and side walls 60 and 62 Reinforced corners 64 and 66 welded. The U-profile 56 engages around the box-shaped outer section 12 of the telescopically extendable Machine part 10 around. Between the side walls 68 and 70 of the section 14 and the side walls 60 and 62 sit reinforcing plates 72 and 74, respectively, with the Side walls 68 and 70 are welded. The side walls 60 and 62 are with the Reinforcing plates 72 and 74 screwed by bolts 76. With the base plate 58 is an adapter foot 78 screwed. The adapter foot 78 has a base plate 80. The Base plate 80 of adapter foot 78 is connected to base plate 58 by bolts 82 screwed. With the base plate 80 of the adapter foot 78 are two parallel ones Welded, perpendicular to the base plate 80, profiled plates 84 and 86. In Bores of the plates 84 and 86 sits a tubular pivot bearing bush 88. Die Plates 84 and 86 also have aligned bores 90 (FIG. 5). By means of the The swivel bearing bushing 88 can be the adapter 18 on an arm of a mobile implement be pivoted. A hydraulic Actuating cylinders are articulated with a pin. Through this actuator the Position of the adapter 18 and thus the telescopically extendable held therein Machine part determined relative to the arm of the implement. That is also in that described above DE-U-296 06 337.1.

Fig. 6 shows an application of the kit for excavating soil in a deep Pit.

On the arm 92 of a mobile implement 94 in the form of an excavator is by means of Adapter 18, the telescopically extendable machine part 10 in the manner described appropriate. The figure shows arm 92 and machine part 10 in two states: one is the arm 92 is raised and the machine part is retracted. To the front end of the inner portion 16 is the adapter piece 28 for one Excavator flanged in the form of a two-neck gripper 96. The adapter piece 28 carries such a clamshell bucket 96. In the second state, the arm 92 lowered. The machine part 10 is held on the arm 92 in a vertical position. The Machine part 10 is then extended downwards in a telescopic manner and projects into a depth Pit 98 into it. In this position 96 soil can be removed using the clamshell bucket the pit. The machine part 10 is then retracted and into the brought other shown, first described location. By swiveling the arm 92 The soil from the clamshell bucket 96 can then be moved around a vertical axis e.g. on to load a truck.

Another application is shown in Fig. 7. The application of Fig. 7 is about Demolition work at great heights e.g. using demolition shears.

For this purpose, the telescopically extendable machine part 10 on the implement-side end of the outer section 12 with the support module 20 of the Kit of Fig.1 provided. The arm of the implement 94 is disassembled. Instead, the support module 20 is mounted on the implement 94. At the same time on the outer portion 12 of the telescopically extendable machine part 10 of the Support body 22 of the kit of Fig.1 attached. On the support body 22 is the hydraulic actuating cylinder 100 articulated, the arm in the operation of Fig.7 92 pivoted. The telescopically extendable machine part 10 now simulates one boom projecting above, which is supported directly on the mobile working device 94. At the upper end of this boom is the adapter piece 26 on the inner section 16 flanged for a demolition tool. The adapter piece 26 carries one Demolition shear 102.

Through the kit of Fig.1, in which, under certain circumstances, different adapters 18 and Support modules 20 are provided for the various types of mobile work equipment can be strong with a single, convertible implement Different work, as shown in Fig. 6 and 7, are performed.

When demolition or other work is carried out at a particularly high height the support module 24 can be used instead of the lintel module 20. The Support module 24 permits a further, considerable one in addition to the support function Extension of the boom. The outer section of the telescopically extendable Mesh part 10 is longitudinally displaceable in the tubular or box-shaped support module 24 guided. This can be done by means of a hydraulic actuating cylinder 104 or more actuating cylinders telescopically extendable machine part 10 in a guide of the support module 24 from the Support module 24 are extended. The support module 24 itself has a pivot bearing 106 for articulating the hydraulic actuating cylinder 100. The support body 22 is then not mandatory.

FIG. 9 shows an implement with the telescopic support on a support module 20 extendable machine part 10. The machine part 10 carries over on the inner Section 16 attached adapter 110 a boom arm 112. The boom arm 112 is pivotally mounted on the adapter piece 110 in a pivot bearing 114. On A hydraulic cylinder 116 is also articulated to the adapter piece 110. This is the Boom arm 112 opposite the telescopically extendable machine part 10 pivotable. The demolition tool 102 is in turn on the boom arm 112 a pivot bearing 118 hinged. On a pivot bearing 120 of the A boom arm 112 is articulated to a hydraulic cylinder 122. Hydraulic cylinder 122 attacks demolition tool 102. As a result, the demolition tool 102 is opposite the boom arm 112 pivotable.

The boom arm 112 and the demolition tool 102 can in this case be retracted Machine part 10 can be pivoted almost completely around the pivot bearing 114, so that the boom arm 122 and the demolition tool substantially over the Machine part 10 are "folded". Then it is by gravity on machine part 10, boom arm 112 and demolition tool 102 torque exerted if possible low. Overcoming this torque, the telescopically extendable Machine part 10 are pivoted upwards from the actuating cylinder 100, as in FIG. 9 is shown.

The machine part 10 can then be extended telescopically from this position. This is also shown in Fig.9. So that the boom arm 112 with the Demolition tool 102 moved straight up. The demolition tool 102 can then operate at high altitude. The demolition tool 102 can be reaching around obstacles. To a limited extent, the demolition tool 102, such as is indicated in Fig.9, also work at different heights without this Machine part 10 needs to be retracted.

In the telescopically extendable machine part 10 can for structural reasons often only a smaller number of pressure medium hoses than functions to be controlled are available. For example, there are only two Pressure medium hoses for flow and return are available. However, there are four to control various functions, namely the pivoting of the boom arm 112 by means of the actuating cylinder 116, the pivoting of the demolition tool 102 by means of of the actuating cylinder 122, a rotation of the demolition tool 102 relative to the Boom arm 112 about an axis 126 and the opening and closing of the Demolition tool, e.g. a demolition shear 102. To control these four functions two remote-controllable valve units 128 and 130 are provided. This Valve units 128 and 130 are located on the boom arm 112. This is shown in FIG. 10 shown. The valve unit 128 is connected via two pressure medium hoses 132 and 134 the flow or return connected. The valve unit 130 is over two Pressure fluid hoses 136 and 138 are also connected to the flow and return lines. The connection is established via the adapter piece 110.

The valve unit 128 controls the two pressure medium hoses 140 and 142 Actuating cylinder 116, which pivots the boom arm 112. The valve unit 128 controls continue via two pressure medium hoses 144 and 146 the actuating cylinder 122, which the Demolition tool 102 pivoted.

The demolition tool 102 is controlled via the valve unit 130. The valve unit 130 is via two pressure medium hoses 148 and 150 with an actuating unit 152 connected, which rotates the demolition tool 102 about the axis 126. The Valve unit 130 is also connected to a pressure medium hose 154 and 156 Actuator 158 connected by which the opening and closing of the Demolition tool 102 e.g. the demolition shear.

Instead, if there is room for it, you can use one for each function separate pressure medium hose to the demolition means. This Pressure hoses can be in an energy chain on the outside of the boom and the Auslerstiels be led.

The embodiment of Fig. 11 is similar to the embodiment of Figs. 9 and 10. Corresponding parts have the same reference numerals as there.

On the adapter piece 110 at the end of the inner section 16 of the telescopic extendable machine part 10 is a boom arm 112 in a pivot bearing 170 pivoted. The formation of the adapter piece 110 and the boom arm 112 and the arrangement of the pivot bearing 170 is such that the boom arm 112 by one large angle of about 180 ° to the telescopically extendable machine part 10 is pivotable. A swing arm 172 is also in the adapter piece 110 a pivot bearing 174 is pivotally mounted. The rocker arm 172 is via a coupling 176 connected to the boom arm 112. A hydraulic actuator in the form of a hydraulic actuating cylinder 178 acts between a pivot bearing 180 on the Boom arm 112 and rocker arm 172. In Fig.11 the boom arm 112 is in two Positions shown. The actuating cylinder 178 is only in the for the sake of clarity pivoted position of the boom arm 112 drawn. One recognizes that through the Adjustment of the boom arm 112 using the swing arm 172 and coupling 174 existing kinematic gears a significantly larger swivel angle can be reached than, for example, in the arrangement according to FIG. 10, in which the hydraulic Actuating cylinder 116 acts directly between adapter piece 110 and boom arm 112 is.

The kinematic transmission with the rocker arm 172 can optionally be omitted. Then the actuating cylinder attacks directly on the boom arm.

Another possible variant is that the boom arm 112 in turn is telescopically extendable.

Similarly, the demolition tool 102, which is pliers-like here, faces each other the boom arm 112 movable. The demolition tool 102 is in a pivot bearing 180 articulated to the free end of the boom arm 112. As can be seen from Fig. 11, are also the demolition tool 102 and the adjacent end of the boom arm 112 designed and the pivot bearing 180 arranged so that a pivoting of the Demolition tool 102 against the boom arm 112 by a large angle is possible.

A rocker 184 is pivotally mounted in a pivot bearing 182. The swingarm 184 is connected to the demolition tool 102 via a coupling 186. At the Swing arm 184 attacks a hydraulic actuating cylinder 188. The actuating cylinder 188 is on the boom arm 112 articulated in a pivot bearing 190. It can also be seen here that by adjusting the demolition tool 102 on the swing arm 184 and Coupling 186 existing kinematic gears a much larger swivel angle is achievable than in the arrangement according to FIG. 10, in which the hydraulic Actuating cylinder 122 directly between boom arm 112 and demolition tool 102 is effective.

12 shows an embodiment with a mobile working device 194, the one has two-part arm 196, wherein a support module 198 for a telescopic extendable machine part 10 instead of the upper section 200, indicated by dashed lines of arm 196 is releasably attached to lower portion 202 of arm 196.

Claims (17)

Mobile demolition tool with one on the tool supported, upwardly projecting, telescopically extendable machine part (10), that carries demolition agents at its upper end. Mobile working device according to claim 1, characterized in that the machine part can be extended by hydraulic actuating means. Mobile working device according to claim 1 or 2, characterized in that (a) the demolition means have a boom arm (112) articulated on the upper end of the telescopically extendable machine part (10), on which an demolition tool (102), in particular demolition shears, is articulated, (b) the boom arm (112) can be pivoted relative to the telescopically extendable machine part (10) by a first hydraulic actuator (116) and (b) the demolition tool (102) can be pivoted relative to the boom arm (112) by means of a second hydraulic actuator (122). Mobile working device according to one of claims 1 to 3, characterized in that enlargement of the swivel range hinges the demolition means to the machine part (10) in a manner permitting a large swivel angle around a swivel bearing and from a hydraulic actuator via a kinematic transmission with coupling and rocker arm is pivotable. Mobile working device according to claims 4 and 5, characterized in that (a) the boom arm (112) is articulated on the machine part (10) about a first pivot bearing in a manner allowing a large pivot angle and can be pivoted by the first hydraulic actuator (116) via a first kinematic transmission with coupling and rocker arm and (b) the demolition tool (102) is articulated on the boom arm (112) about a second pivot bearing in a manner that allows a large pivoting angle and can be pivoted by the second hydraulic actuator (122) via a second kinematic transmission with coupling and rocker arm. Mobile working device according to one of claims 3 to 5, characterized in that (a) in the telescopically extendable machine part (10) and to the adapter piece only a smaller number of pressure medium hoses than functions to be controlled are present, for example only two pressure medium hoses for forward and return, and (b) Valve means (128, 130) which are remotely controllable on the demolition tool are provided, which are connected to the pressure medium hoses for flow and return via pressure medium hoses (132, 134; 136, 138) and via which the actuators (116, 122) for by means of further pressure medium hoses (140, 142; 144, 146; 148, 150; 154, 156) the pivoting movements of the boom arm (112) and demolition shear (102) and actuating units (152, 158) for the other movements of the demolition shear (102) can be controlled. Mobile working device according to claim 6, characterized in that the valve means (128, 130) can be controlled via a control cable. Mobile working device according to claim 6, characterized in that the valve means (128, 130) can be controlled by radio. Mobile working device according to one of claims 1 to 8, characterized in that (a) the telescopically extendable machine part (10) is in turn guided in a support module (24) and (b) a hydraulic actuator (104) is provided between the support module (24) and the upper end of the outer section (12) of the telescopically extendable machine part (10), through which the machine part (10) can be extended from the support module (24). Mobile implement according to claim 9, characterized in that a pivot bearing (106) is provided on the support module (24), on which a hydraulic actuator (100) supported on the implement acts to pivot the boom. Mobile implement according to one of claims 1 to 10, characterized in that the telescopically extendable machine part can be supported on the vehicle (94) by means of a detachable support module (20; 24). Mobile implement according to claim 11, characterized in that the telescopically extendable machine part (10) can be attached to an arm (92) of the implement (94) either by means of an adapter (18) or on the implement (94) by means of the support module (20; 24 ) can be supported upwards. Mobile working device according to claim 12, characterized in that in the case of a mobile working device with an arm which consists of two sections which are detachably connected to one another, the support module is designed for releasable attachment to the lower section of the arm instead of the upper section. Kit for an extendable working arm for mobile work tools containing: (a) a machine part (10) which can be extended telescopically by hydraulic actuating means (36), (b) a support module (20; 24) for supporting the telescopically extendable machine part (10) projecting upwards on the mobile working device (94) (c) an adapter (18) for attaching the outer section (12) of the telescopically extendable machine part (10) to an arm (92) of a mobile working device (94), and (d) adapter pieces (26; 28) which can optionally be attached to the outer end of the innermost section (16) of the telescopically extendable machine part (10) for attaching different tools (96; 102), including at least one adapter piece (26) for Attaching demolition shears (102) and establishing an operative connection to them. Kit according to claim 14, characterized in that (a) the telescopically extendable machine part (10) is in turn guided in the support module (24) and (b) at the front end of the outer section of the extendable machine part (10) an external actuating cylinder supported on the support module engages. Kit according to one of claims 14 or 15, characterized in that an adapter (18) for attaching the telescopically extendable machine part (10) in the central region of the outer section (12) can be attached and then the telescopically executable machine part (10) at such an angle to an arm (92) of the implement (94) holds that the telescopically extendable machine part (10) is substantially vertical when the arm (92) is lowered and can be extended downwards. Kit according to claim 16, characterized in that an adapter piece (28) is arranged for attaching an excavation or transport tool, in particular a clamshell bucket (96).

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