DE19824282A1 - Mobile working device and kit for an extendable working arm for a mobile working device - Google Patents

Abstract

A telescopically extendable machine part (10) can be attached to a mobile working device (94) and can be extended by hydraulic actuating means (36). The telescopically extendable machine part (10) carries a demolition tool (102), z. B. demolition shears. The telescopically extendable machine part (10) can be attached to an arm (92) of the implement (94) by means of an adapter (18) or can be supported on the implement (94) by means of a support module (20; 24) projecting upwards. A kit is also provided for an extendable working arm for mobile work equipment, comprising: a machine part (10) which can be extended telescopically by hydraulic actuating means (36), an adapter (18) for attaching the outer section (12) of the telescopically extendable machine part (10) an arm (92) of a mobile working device (94), a support module (20; 24) for supporting the telescopically extendable machine part (10) protruding upward on the mobile working device (94) and adapter pieces (26; 28), which can optionally be attached to the The outer end of the innermost section (16) of the telescopically extendable machine part (10) can be attached for attaching different tools (96; 102) and establishing an operative connection to them. This means that very different work can be carried out with a single, convertible implement.

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. B. a Demolition shears, wear. The boom has two or more against each other pivotable sections. 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-29 60 6337.1 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. B. 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. B. a 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.  

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 after protruding on the top of the mobile working device,
• c) an adapter for attaching the outer section of the telescopically extendable machine part ( 10 ) to an arm ( 92 ) of a mobile working device, 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 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 in mobile tools.

Fig. 2 shows schematically a telescopically extendable machine part in the fully retracted state.

Fig. 3 shows the telescopically extendable machine part in the fully extended state.

Fig. 4 shows a cross section of the adapter and the outer, attachable to the extension arm of the implement of the telescopically extendable machine part.

FIG. 5 shows a side view of the adapter from FIG. 4.

Fig. 6 is a schematic representation of an implement with a telescopically extendable machine part attached to a cantilever arm by means of the adapter, the machine part being retractable into a deep pit.

Fig. 7 is a schematic illustration of an implement having one using the telescopic machine part and others. Components of the kit of Fig. 1 constructed, extendable boom for demolition work.

Fig. 8 is a schematic representation of an implement similar to Fig. 7, wherein the support module also serves as an extension piece that extends the boom.

FIG. 9 shows a demolition excavator in various positions of the boom with a boom designed as a telescopically extendable machine part, with a demolition tool sitting 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 FIG. 9 and 10, wherein for increasing the swivel ranges of the boom arm and demolition tool the hydraulic actuators on the arm shaft or the demolition tool via a kinematic transmission with coupling and rocker attack.

Fig. 12 shows an embodiment with a mobile working device which has a two-part arm, wherein a support module for a telescopically extendable machine part is detachably attached to the lower section of the arm instead of the upper section of the arm.

Preferred embodiments of the invention

In Fig. 1, 10 as part of the kit is a telescopically extendable machine part in the form of a boom with three sections. The machine part 10 includes an outer section 12 , a middle section 14 and an inner section 16 . The kit also contains an adapter 18 . By means of the adapter 18 , the extendable machine part 10 , as will be described later, can be attached to the arm of a mobile working device such as an excavator. The kit also includes a support module 20 . The support module 20 is attached to the implement-side end of the outer section 12 of the telescopically extendable machine part 10 . Via the support module 20 , the telescopically extendable machine part 10 can be pivotally supported on the mobile working device. A bearing body 22 can be attached to the telescopically extendable machine part 10 . A hydraulic lifting cylinder can be articulated on this bearing body 22 in a manner to be described. This lifting cylinder supports the extendable machine part 10 on the mobile implement. The kit of Fig. 1 comprises a further support module 24. The support module 24 is designed such that it extends the telescopically extendable machine part 10 by a further, considerable distance. Finally, the kit also contains two adapter pieces 26 and 28 . The adapter pieces 26 and 28 are flanged to the inner section 16 of the telescopically extendable machine part 10 at the front end of the section 16 facing away from the implement. The adapter pieces 26 and 28 allow the attachment of a tool, e.g. B. demolition shears or a gripper (clamshell grab). The adapter pieces are also connected to the power lines in the machine part 10 for actuating the tools.

Figs. 2 and 3 show the telescoping machine part 10 in the retracted and in the extended state, wherein in Fig. 3, parts of the various sections 30, have been cut 32 and 34. The extendable machine part 10 is constructed in the manner of DE-A-196 13 700 mentioned above.

The middle section 14 is displaced with respect to the outer section 12 by a hydraulic cylinder 36 . The cylinder box 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 displaceable relative to the middle section 14 by means of a double cable pull. A first cable 40 of the double cable runs from a first fastening point 42 on the outer section 10 via a first deflection roller 44 fastened on the tool-side end of the middle section 14 on the left in FIGS. 2 and 3 to a second fastening point 46 on the middle section. 14. A second cable 48 of the double cable runs from a first fastening point 50 on the inner section 14 via a second deflecting roller 52 fastened to the implement-side end of the middle section 14 on the right in FIGS. 2 and 3 to a second fastening point 54 on the outer Section 12 .

When the middle section 14 is extended to the left in FIGS. 2 and 3 from the outer section 12 by means of the hydraulic cylinder 36 , the inner section 16 is also pulled out of the middle section 14 to the left by the cable 40 . When the middle section 14 is moved to the right in FIGS. 2 and 3 into the outer section 12 , the inner section 16 is simultaneously pulled into the middle section 14 by the cable 48 .

FIGS. 4 and 5 show an adapter as part of the kit of Figure in detail. 1. The adapter serves to attach the telescopically extendable machine part 10 to the arm of a mobile machine such as an excavator. The adapter is of a similar type to 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 walls 60 and 62 . Reinforcement corners 64 and 66 are welded in between base plate 58 and side walls 60 and 62 . The U-profile 56 engages around the box-shaped outer section 12 of the telescopically extendable machine part 10 . Between the side walls 68 and 70 of the section 14 and the side walls 60 and 62 there are reinforcing plates 72 and 74 , respectively, which are welded to the side walls 68 and 70 . The side walls 60 and 62 are screwed to the reinforcing plates 72 and 74 by bolts 76 . An adapter foot 78 is screwed to the base plate 58 . The adapter foot 78 has a base plate 80 . The base plate 80 of the adapter foot 78 is screwed to the base plate 58 by bolts 82 . Two parallel, profiled plates 84 and 86 , which extend perpendicular to the base plate 80 , are welded to the base plate 80 of the adapter foot 78 . A tubular swivel bearing bushing 88 is seated in holes in the plates 84 and 86 . The plates 84 and 86 also have aligned bores 90 ( FIG. 5). The adapter 18 can be pivotably mounted on an arm of a mobile working device by means of the pivot bearing bushing 88 . A hydraulic actuating cylinder can be articulated with a pin between the bores. The position of the adapter 18 and thus of the telescopically extendable machine part held therein relative to the arm of the implement is determined by this actuating cylinder. This is also described in the aforementioned DE-U-29 60 6337.1.

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, the telescopically extendable machine part 10 is attached in the manner described by means of the adapter 18 . The figure shows arm 92 and machine part 10 in two states: the arm 92 is raised once and the machine part is in the retracted state. At the front end of the inner section 16 , the adapter piece 28 for an excavation tool in the form of a clamshell bucket 96 is flanged. The adapter piece 28 carries such a clamshell bucket 96 . In the second state, arm 92 is lowered. The machine part 10 is held on the arm 92 in a vertical position. The machine part 10 is then extended telescopically downward and protrudes into a deep pit 98 . In this position 96 soil can be picked up from the pit by means of the clamshell bucket. The machine part 10 is then retracted and brought into the other position shown, described first. By pivoting the arm 92 about a vertical axis, the soil from the clamshell bucket 96 z. B. loaded onto a truck.

Another application is shown in Fig. 7. The application of Fig. 7 is about demolition work at a great height z. B. using demolition shears.

For this purpose, the telescopically extendable machine part 10 is provided with the support module 20 of the kit from FIG. 1 at the end of the outer section 12 on the implement side. The arm of the implement 94 is disassembled. Instead, the support module 20 is mounted on the implement 94 . At the same time, the bearing body 22 of the kit from FIG. 1 is attached to the outer section 12 of the telescopically extendable machine part 10 . The hydraulic actuating cylinder 100 is articulated on the bearing body 22 and pivots the arm 92 in the operating mode of FIG. 7. The telescopically extendable machine part 10 now forms an upstanding arm which is supported directly on the mobile implement 94 . At the upper end of this boom, the adapter piece 26 for a demolition tool is flanged to the inner section 16 . The adapter piece 26 carries such demolition shears 102 .

Through the kit of Fig. 1, in which u. U. still different adapters 18 and support modules 20 can be provided for the different types of mobile work equipment can with. a single, retrofittable implement, very different work, as shown in Fig. 6 and 7, are performed.

If demolition or other work is to be carried out at a particularly great height, the support module 24 can be used instead of the support module 20 . In addition to the support function, the support module 24 permits a further, substantial extension of the boom. The outer section of the telescopically extendable machine part 10 is longitudinally displaceable in the tubular or box-shaped support module 24 . The telescopic machine part 10 can be extended out of the support module 24 in a guide of the support module 24 by means of a hydraulic actuating cylinder 104 . The support module 24 itself has a pivot bearing 106 for articulating the hydraulic actuating cylinder 100 . The bearing body 22 is then not required.

FIG. 9 shows an implement with the machine part 10, which is supported on a support module 20 and can be extended telescopically. The machine part 10 carries a boom arm 112 via an adapter piece 110 attached to the inner section 16 . The boom arm 112 is pivotally mounted on the adapter piece 110 in a pivot bearing 114 . A hydraulic cylinder 116 is also articulated on the adapter piece 110 . As a result, the boom arm 112 can be pivoted relative to the telescopically extendable machine part 10 . The demolition tool 102 is in turn pivotally articulated in a pivot bearing 118 on the boom arm 112 . A hydraulic cylinder 122 is articulated on a pivot bearing 120 of the boom arm 112 . The hydraulic cylinder 122 engages the demolition shear 102 . As a result, the demolition tool 102 can be pivoted relative to the boom arm 112 .

The boom arm 112 and the demolition tool 102 can be pivoted practically completely around the pivot bearing 114 when the machine part 10 is retracted, so that the boom arm 122 and the demolition tool are essentially "folded" over the machine part 10 . Then the torque exerted by gravity on machine part 10 , boom arm 112 and demolition shear 102 is as low as possible. Overcoming this torque, the machine part 10, which can be extended telescopically, can then be swiveled up by the actuating cylinder 100 , as is shown in FIG. 9.

The machine part 10 can then be extended telescopically from this position. This is also shown in Fig. 9. The boom arm 112 with the demolition shear 102 is thus moved straight up. The demolition tool 102 can then operate at great heights. The demolition tool 102 can reach around obstacles through the boom arm. To a limited extent, the demolition tool 102 , as indicated in FIG. 9, can also work at different heights without the machine part 10 needing to be retracted.

For structural reasons, only a smaller number of pressure medium hoses can be guided in the telescopically extendable machine part 10 than there are functions to be controlled. For example, there are only two pressure medium hoses for supply and return. However, there are four different functions to be controlled, namely the pivoting of the boom arm 112 by means of the actuating cylinder 116 , the pivoting of the demolition shear 102 by means of the actuating cylinder 122 , a rotation of the demolition shear 102 relative to the boom arm 112 about an axis 126 and the opening and closing of the Demolition shear 102 . In order to be able to control these four functions, two remotely controllable valve units 128 and 130 are provided. These valve units 128 and 130 are located on the boom arm 112 . This is shown in Fig. 10. The valve unit 128 is connected to the flow or return via two pressure medium hoses 132 and 134 . The valve unit 130 is also connected to the flow or return via two pressure medium hoses 136 and 138 . The connection is established via the adapter piece 110 .

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

The demolition tool 102 is controlled via the valve unit 130 . The valve unit 130 is connected via two pressure medium hoses 148 and 150 to an actuating unit 152 which rotates the demolition tool 102 about the axis 126 . The valve unit 130 is also connected via pressure medium hoses 154 and 156 to an actuating unit 158 , by means of which the demolition shear is opened and closed.

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 telescopically extendable machine part 10 , a boom arm 112 is pivotally mounted in a pivot bearing 170 . The design 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 can be pivoted by a large angle of approximately 180 ° with respect to the telescopically extendable machine part 10 . On the adapter piece 110 , a rocker arm 172 is also pivotally mounted in a pivot bearing 174 . The rocker arm 172 is connected to the boom arm 112 via a coupling 176 . A hydraulic actuator in the form of a hydraulic actuator cylinder 178 acts between a pivot bearing 180 on the boom arm 112 and the rocker arm 172 . In Fig. 11, the boom handle is shown in two positions 112th For the sake of clarity, the actuating cylinder 178 is only drawn in the pivoted-out position of the boom arm 112 . It can be seen that by adjusting the boom arm 112 over the swing arm 172 and coupling. 174 existing kinematic transmission, a significantly larger swivel angle can be achieved than, for example, in the arrangement according to FIG. 10, in which the hydraulic actuating cylinder 116 is effective directly between the adapter piece 110 and the boom arm 112 .

Similarly, the demolition tool 102 , which is pliers-like here, is movable relative to the boom arm 112 . The demolition tool 102 is articulated in a pivot bearing 180 on the free end of the boom arm 112 . As can be seen from FIG. 11, the demolition tool 102 and the adjacent end of the boom arm 112 are also designed and the pivot bearing 180 is arranged such that the demolition tool 102 can be pivoted relative to the boom arm 112 by a large angle.

A rocker 184 is pivotally mounted in a pivot bearing 182 . The rocker arm 184 is connected to the demolition tool 102 via a coupling 186 . A hydraulic actuating cylinder 188 acts on the rocker 184 . The actuating cylinder 188 is articulated on the boom arm 112 in a pivot bearing 190 . Here, too, it can be seen that by adjusting the demolition tool 122 via the kinematic transmission consisting of rocker 184 and coupling 186 , a significantly larger swivel angle can be achieved than in the arrangement according to FIG. 10, in which the hydraulic actuating cylinder 122 is located directly between the boom arm 112 and the demolition tool 102 is effective.

Fig. 12 shows an embodiment with a mobile device 194, which has a two-part arm 196, wherein a support module 198 for a telescopically extendable machine part 10 instead of - indicated by broken lines - the top portion 200 of the arm 196 detachably attached to the lower portion 202 of the arm 196 is attached.

Claims (17)

1. Mobile working device for demolition purposes with a supported on the working device, upwardly projecting, telescopically extendable machine part ( 10 ) which carries demolition means at its upper end. 2. Mobile working device according to claim 1, characterized in that the Machine part can be extended by hydraulic actuating means. 3. 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 ), to which an demolition tool ( 102 ), in particular demolition shears, is articulated,
• b) the boom arm ( 112 ) can be pivoted by a first hydraulic actuator ( 116 ) relative to the telescopically extendable machine part ( 10 ) and
• c) the demolition tool ( 102 ) can be pivoted relative to the boom arm ( 112 ) by a second hydraulic actuator ( 122 ).

4. Mobile working device according to one of claims 1 to 3, characterized in that enlargement of the swivel range, the demolition means articulated to the machine part ( 10 ) in a manner allowing a large swivel angle around a swivel bearing and by a hydraulic actuator via a kinematic transmission with coupling and swing arm is pivotable. 5. 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 permitting a large pivot angle and can be pivoted by the second hydraulic actuator ( 122 ) via a second kinematic transmission with coupling and rocker arm.

6. Mobile working device according to one of claims 3 to 5, characterized in that

• a) are guided 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 flow 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 further pressure medium hoses ( 140 , 142 ; 144 , 146 ; 148 , 150 ; 154 , 156 ) the actuators ( 116 , 122 ) for the pivoting movements of the boom arm ( 112 ) and demolition shears ( 102 ) and actuating units ( 152 , 158 ) for the other movements of the demolition shears ( 102 ) can be controlled.

7. Mobile working device according to claim 6, characterized in that the valve means ( 128 , 130 ) can be controlled via a control cable. 8. Mobile working device according to claim 6, characterized in that the valve means ( 128 , 130 ) can be controlled by radio. 9. 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 ).

10. Mobile implement according to claim 9, characterized in that on the support module ( 24 ) a pivot bearing ( 106 ) is provided, on which a supported on the implement hydraulic actuator ( 100 ) engages to swing up the boom. 11. Mobile working device according to claim 1, characterized in that the telescopically extendable machine part on the vehicle ( 94 ) can be supported by means of a detachable support module ( 20 ; 24 ). 12. Mobile working device according to claim 11, characterized in that the telescopically extendable machine part ( 10 ) can be attached either by means of an adapter ( 18 ) to an arm ( 92 ) of the working device ( 94 ) or on the working device ( 94 ) by means of the support module ( 20 ; 24 ) can be supported projecting upwards. 13. Mobile working device according to claim 12, characterized in that at one mobile work tool with an arm that consists of two detachably connected There is sections, the support module for releasable attachment to the lower Section of the arm is set up in place of the upper section.   14. 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 attachment demolition shears ( 102 ), and establishing an operative connection to them.

15. 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 ( 104 ) supported on the support module acts.

16. 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 extendable machine part ( 10 ) under one holds such an angle to an arm ( 92 ) of the implement ( 94 ) that the telescopically extendable machine part ( 10 ) is substantially vertical when the arm ( 92 ) is lowered and can be extended downward. 17. 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 ).