EP3712331B1 - Connection tool assembly - Google Patents
Connection tool assembly Download PDFInfo
- Publication number
- EP3712331B1 EP3712331B1 EP20159171.6A EP20159171A EP3712331B1 EP 3712331 B1 EP3712331 B1 EP 3712331B1 EP 20159171 A EP20159171 A EP 20159171A EP 3712331 B1 EP3712331 B1 EP 3712331B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- attachment
- housing
- attachment tool
- base frame
- connecting portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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- 238000010168 coupling process Methods 0.000 claims description 26
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- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
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Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/046—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
- E01C19/30—Tamping or vibrating apparatus other than rollers ; Devices for ramming individual paving elements
- E01C19/34—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight
- E01C19/38—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight with means specifically for generating vibrations, e.g. vibrating plate compactors, immersion vibrators
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/046—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil
- E02D3/074—Vibrating apparatus operating with systems involving rotary unbalanced masses
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/3604—Devices to connect tools to arms, booms or the like
- E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
- E02F3/3622—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a locking element acting on a pin
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/3604—Devices to connect tools to arms, booms or the like
- E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
- E02F3/3627—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a longitudinal locking element
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/3604—Devices to connect tools to arms, booms or the like
- E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
- E02F3/364—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat using wedges
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
- E02F3/967—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements of compacting-type tools
Definitions
- the invention relates to an attachment device according to the preamble of claim 1.
- An attachment device in the form of an attachment compressor is from DE 20 2005 006 059 U1 known.
- Such an attachment device is used as an excavator attachment, in particular in trench and pipeline construction.
- quick-change devices and rotary heads they offer considerable potential for cost savings and for increasing work safety as a cost-effective changing device, because people do not have to stay in trenches and pits for compaction work.
- More attachment devices are, for example, from the applicant DE 10 2008 006 211 B4 known. Depending on the intended use, various interchangeable attachments can be coupled to such attachment tool devices.
- the attached attachments are monitored by means of sensors that detect the position or presence of coupling and locking elements and can output corresponding information to an operator, for example by means of a display.
- a visual and/or acoustic warning message for example, can be issued to the operator.
- the use of such a sensor system requires a great deal of design effort, since it is present Components must be adapted and the sensor system must be installed in the attachment tool device in a damage-resistant manner. Programming is also required. In addition, incorrect operation, which can lead to dangerous situations for an operator, for example, cannot be completely ruled out.
- Another attachment tool for an excavator is, for example, from U.S. 9,926,677 known, which also comprises a compression plate, which is connected to a housing.
- the object of the present invention is to create an attachment device that can be used as universally as possible, while at the same time having low acquisition and operating costs.
- the attachment tool devices according to the invention generally have the advantage that they can have very different compactor plates.
- the attachment device can therefore be used very flexibly in different usage situations, for example in narrow or wide trenches with a corresponding narrow or wide compactor plate, with differently shaped compactor plates, or with a different surface on the underside of the compactor plate.
- a worn compactor plate can also be easily replaced, and other attachments, such as a screening bucket, can also be coupled.
- the housing of the attachment tool device also includes an upper part.
- the lower and upper parts are coupled to one another via buffer devices.
- the lower part serves to connect the attachment tool; whereas the top includes the coupling with the excavator.
- cast parts can have more complex geometries be realized, which in turn allows the deeper in the position of use arrangement of motor and / or imbalance generator.
- mounts e.g. for a locking device
- other mounts can be integrated directly into the cast part.
- a bolt safety device in which the bolt can be moved hydraulically in particular.
- a substantially one-piece cast part is to be understood in particular as configurations that are 60%, preferably 70%, preferably 80%, preferably 90% and preferably 100% formed as a one-piece cast part.
- the remaining parts of the lower housing part can be provided as separate parts and can also be designed as cast parts or as stamped parts or other parts. These are preferably also metal parts. These parts can then be connected to the cast part in a material, non-positive or positive manner, in particular via welded or screwed connections.
- the cast part can in particular have a base frame designed as a floor and two lateral plate-like longitudinal members, which extend upwards at an angle inclined outwards from the base frame in a position of use and connect to it, preferably at the lateral longitudinal edges of the base frame and a space between them lock in.
- the inclination of the side members also results in particular from the technical casting requirements in addition to the requirements resulting from the use, which in particular should also allow use with a narrow compression plate, while at the same time providing sufficient stability during the transition to the excavator.
- the base frame can have a more complex shape in order to accommodate the various components, such as the locking device. In cross-section, the base frame and longitudinal member form a U-shaped configuration, in particular with inclined legs that point outwards.
- Recesses for the drive and the imbalance generator (exciter unit) can be implemented directly without additional processing steps, such as burning or cutting, so that the manufacture of the lower housing part is simplified.
- curves and transitions can be better realized in cast parts.
- complex geometric shapes that deviate from the pure plate shape can be produced without additional effort.
- the cast part offers the possibility, in particular, of relocating the unit for generating imbalance and preferably also a drive for this purpose to the area of the base frame.
- the recesses for the imbalance generator and/or drive extend into the base frame.
- a locking device is provided as the locking device, there is no time-consuming screwing of the compressor plate to the housing, in particular the lower part.
- a bolt is particularly robust in the tough everyday use of an attachment tool device, and it is easier to manufacture than, for example, a rotation lock.
- the bolt has a conical active section. This facilitates the locking process (reduction of the risk of a blockage) and creates a secure mounting of the compressor plate on the housing (clamping effect).
- a central bolt is provided, which is arranged essentially between the two longitudinal beams.
- the longitudinal members preferably extend along the longer longitudinal sides, whereas the narrow sides preferably have no limitation in the vertical direction in the position of use.
- the displacement path of the bolt essentially corresponds to the direction of the side members.
- the bolt preferably does not protrude beyond the circumference of the housing, preferably of the lower part.
- the locking device can be integrated into the base frame.
- Such a configuration has the advantage that an unintentional loosening or falling of the attachment from the attachment device, e.g. as a result of incorrect operation, can be avoided since the safety device secures the attachment regardless of the locking state of the locking device on the attachment device. Even if the locking device is unlocked undesirably as a result of incorrect operation, for example when the attachment tool device is raised by an excavator arm, the risk of injury is significantly reduced in this way, since the attachment tool cannot, at least not completely, detach from the attachment tool device. This contributes to safety when operating attachment tool devices with interchangeable attachment tools.
- a solution with high operational reliability (few components with a low risk of failure) is created, and at a comparatively low price.
- complete detachment of the attachment tool in the event of incorrect operation (for example due to accidental actuation of a hand lever that actuates the locking device) can be avoided.
- a simple primary safeguard can be created which can also be used as a retrofit solution.
- the add-on tool device can be, for example, an add-on compactor.
- the attachment tool can in particular be a compactor plate.
- other components can also be coupled as add-on tools, for example a screening bucket.
- the add-on tool device can have an imbalance generator, particularly when configured as an add-on tool device.
- the vibrator can be driven by a hydraulic motor connected to a hydraulic port.
- the safety device can be designed in such a way that it catches or intercepts the interchangeable attachment in a position that deviates from the position of the interchangeable attachment that is fixed on the housing.
- the safety device can be designed as a catching device, with the interchangeable attachment being caught outside of its fixing position or fixing position on the attachment. This means that the safety device is not stressed or only negligibly stressed during proper operation (attachment tool correctly coupled to the attachment device), but only when it is actually necessary for safety reasons. Loads that are unnecessary per se or unnecessary wear and tear can be avoided, which contributes to a long service life of the safety device.
- the safety device can expediently be designed so that it can be retrofitted. This allows not only retrofitting of existing attachment tool devices, but also replacement of the safety device if necessary (spare parts supply).
- the safety device can in particular by attachment to the housing Attachment tool device can be retrofitted, for example by screwing or welding. It is particularly preferred if the safety device is connected to the housing in one piece, in particular by being part of the cast part, in particular part of the base frame.
- the safety device can be designed as a catching element that is fastened or provided on the housing of the attachment tool device and is set up in such a way that it (to catch the attachment tool) interacts with a coupling section of the interchangeable attachment tool that serves to fix the interchangeable attachment tool on the housing of the attachment tool device.
- a coupling section of the interchangeable attachment tool that serves to fix the interchangeable attachment tool on the housing of the attachment tool device.
- a coupling section which is used for fixing to the attachment device and is therefore present in any case, is used on the attachment.
- the catching element can partially encompass or reach behind the coupling section.
- the catch element and the coupling section can be spaced apart and only rest against one another when the exchangeable attachment tool begins to fall down.
- the catching element can, for example, have a hook-shaped cross section, with an opening being provided on the hook-shaped cross section, which is preferably oriented upwards (away from the fixed attachment).
- the catch element can expediently be provided on a lower part of the housing, in particular on the base frame, in particular on a narrow side of the lower part of the housing.
- This allows a constructively favorable load introduction Realize because the lower part, in particular the base frame, is designed to be stable and suitable for load transfer, since the attachment tool is also fixed and held there.
- the type of coupling (hanging the attachment tool on one side and locking it on the other side) can be retained.
- an attachment can be fixed in two positions rotated by 180° on the housing of the attachment.
- the housing of the attachment device can have a first connection section that interacts with a first coupling section (in particular a cylindrical rod) of the attachment and a second connection section that interacts with a second coupling section (in particular a cylindrical rod) of the attachment.
- the connecting sections are formed or attached to the housing of the attachment device and the coupling sections are formed or attached to the attachment. By coupling the connecting sections to the coupling sections, the attachment can be fixed to the housing of the attachment with the aid of the locking device.
- the catching element can be arranged on the narrow side of the housing of the attachment tool device (hanging side), which faces away from the narrow side on which a bolt of the locking device serving to fix the attachment tool on the housing acts (locking side). This configuration does not impair the process of engaging and changing the attachment tool.
- the catch element can expediently have a first section (proximal section) extending parallel to the underside of the housing part or obliquely away from the housing lower part and a second section (distal section) adjoining the first section, which is angled or curved relative to the first section.
- the catching element is designed to be open at the top (away from the bottom) and closed at the bottom (towards the bottom). This enables the attachment to be reliably caught when it is released from the attachment tool device, since the catch element can catch the attachment even if there is a comparatively large release movement.
- the catch element can have a hook-shaped cross section overall due to the first section and the second section.
- the catch element can be arranged centrally in relation to the narrow side of the housing and/or the catch element can extend over a section of the narrow side of the housing.
- the central arrangement of the catching element allows a pivoting movement of the attachment around the longitudinal axis of the coupling section, for example a cylindrical rod, but reduces the risk of (lateral) tipping towards the ends of the coupling section. If the catch element extends over a section of the narrow side of the housing, a sufficiently stable design of the catch element is created so that the attachment tool can be caught securely. In addition, a lateral tilting of the attachment to the ends of the coupling section can be counteracted.
- the catch element(s) can, for example, extend over a range of 10 to 30 percent (together) of the width of the narrow side of the housing.
- the provision of two is particularly preferred Catch elements on both sides of a longitudinal center axis of the housing, since this tilting can be avoided even more securely.
- the catch element of the safety device can be designed as a catch hook. This enables the attachment tool to be caught safely and reliably in the event of an undesired release of the attachment tool from the attachment tool device.
- two spaced-apart receiving sections for receiving a rigid holding element of a means of transport can be formed on the attachment. This simplifies handling of the attachment tool and also of the attachment tool device as a whole, since simple handling by means of a lifting device, for example a forklift, is possible by means of the receiving sections.
- the receiving sections can be designed, for example, as recesses in a side plate of the attachment tool.
- the latch preferably secures the second dome portion to the second connection portion.
- the first coupling section is held on the first connecting section solely by the shape and orientation of the first connecting section, so that securing by the bolt provided according to the invention is only required on the second connecting section. This configuration is inexpensive and stable and allows the compressor plate to be quickly dismantled or assembled on the housing in everyday use.
- the bolt is advantageously by a double-acting hydraulic cylinder by means of the hydraulic supply of the excavator operated.
- high locking forces can be generated which hold the compression plate particularly securely on the housing, especially in conjunction with the conical active section.
- Using the excavator's hydraulic supply eliminates the need for a separate power supply to lock the compressor plate to the housing. This makes the structure of the attachment device simpler and further costs are saved.
- the imbalance generator interacts with a hydraulic motor that is connected to the hydraulic connection, and that a nonreturn valve is arranged between the second pressure connection and the hydraulic motor and blocks the hydraulic motor.
- a nonreturn valve is arranged between the second pressure connection and the hydraulic motor and blocks the hydraulic motor.
- the vibrator can operate in one direction of rotation and in another direction of rotation. Normally, this is achieved by the fact that the two pressure connections can be used either as a pressurized flow or as an unpressurized return. To nevertheless in normal operation the To be able to change the compression plate of the attachment tool device, an operating state of the attachment tool device is required in which the imbalance generator is not working. This is realized by an open/close valve, which interrupts the flow of hydraulic fluid to or from the hydraulic motor, thereby switching off the imbalance generator. Check valves, which can be opened hydraulically from the respective other pressure connection, ensure that the hydraulic lines are not completely depressurized or emptied when the system is switched off and the unbalance generator continues to run due to its mass inertia.
- An attachment device carries in figure 1 overall reference numeral 10. It comprises a housing 12 which comprises a lower part 16 of the add-on compressor 10. Furthermore, an upper part 14 is provided. Upper part 14 and lower part 16 are connected to one another in a known manner by flexible buffer devices 18 .
- An imbalance generator 20 is arranged in the lower part 16 and comprises, for example, a shaft with an eccentrically arranged mass. The Imbalance generator 20 is coupled to a hydraulic motor 21, by which imbalance generator 20 can be rotated.
- a compressor plate 22 can be detachably fastened to the lower part 16 in a manner to be illustrated in more detail below.
- the upper part 14 is connected by means of a rotary union 24 to a coupling part (not shown), which can be attached to an arm of an excavator, not shown.
- the coupling part has hydraulic quick connectors (not shown) with which the attachment tool device 10 can be connected to a hydraulic supply of the excavator.
- the upper part 14 also comprises two longitudinal supports 29a,b, the buffer devices 18 being provided between the longitudinal supports 28a,b of the lower part 16 and the longitudinal supports 29a,b of the upper part 14 and fixed to them.
- the lower part 16 comprises two lateral longitudinal beams 28a and 28b, which adjoin a base frame 30 forming a base laterally and vertically and form a space between them.
- the longitudinal members 28a and 28b are designed similarly, so that in the following, for the sake of simplicity, reference is essentially made to the longitudinal member 28a.
- the base frame 30 and the longitudinal members 28a,b form a U-shaped position of use which is open at the top.
- figure 3 shows the lower housing part 16 with the mounted longitudinal supports 29a, b of the upper part 14.
- the in figure 3 The right axial end of the longitudinal member 28a has a slot-like recess 32. This runs essentially parallel to the compressor plate 22, but with a in the figures 1 and 2 lower edge 34 of the slot-like recess 32 runs obliquely downward toward the axial end of the longitudinal member 28a.
- the in the figure 3 The left axial end of the longitudinal member 28a has a recess 36 which is open towards the compressor plate 22 and has an edge 38 running with a slight incline towards the compressor plate 22 .
- the housing 12 has a recess 40 in the base frame 30 approximately in its axial center, in which a double-acting hydraulic cylinder is arranged.
- a piston rod points in the direction of the recess 36 and is provided with a bolt-like latch 46 (cf figure 2 ) tied together. In the retracted state (not shown), this closes flush with the edge 38 of the recess 36 . In the in the figure 1 In the extended state shown, it protrudes significantly beyond the edge 38 of the recess 36 , ie protrudes into the recess 36 .
- the upper side 48 of the section of the bolt-like bolt 46 protruding into the recess 36 is designed as a conical and flattened active section which is at an angle A relative to the longitudinal axis of the bolt-like bolt 46 (cf figure 3 ) having.
- A is preferably about 8 to 12°.
- the compression plate 22 has a flat bottom plate 50 which does the actual compression work during operation. Its rear end portions 52b slope upwards. The front end portion 52a is also formed flat in the plane of the bottom plate 50.
- FIG. Two longitudinally extending side plates 54a and 54b are welded to the bottom plate 50 . Between these are in turn held two horizontal (in the position of use) and having a cylindrical cross-section rods 56a and 56b. The distance between the two bars 56a and 56b corresponds exactly to the distance between the inner radii (without reference numerals) of the two recesses 32 and 36 in the longitudinal members 28a and 28b of the lower part 16 of the Housing 12. The radii of the rods 56a and 56b also correspond to those of the two recesses 32 and 36.
- the rod 56b is first inserted into the recess 32 with the bolt-like bolt 46 retracted. Then the compressor plate 22 on the one hand and the housing 12 on the other hand are pivoted relative to each other about the axis of the rod 56b until the rod 56a is completely received against the upper edge of the recess 36. The bolt-like bolt 46 is now extended into the recess 36 . The rod 56a is clamped in the recess 36 by the conical active section 48 on the respective bolt-like bolt 46 .
- the compression plate 22 is rigidly connected to the lower part 16 of the housing 12 of the attachment device 10 .
- the recesses 32 and 36 form first and second connecting sections
- the rods 56a and 56b form first and second coupling sections.
- the lower part 16 is designed essentially as a one-piece cast part.
- Lower part configurations 16 in which at least 60% of the lower part is designed as a one-piece cast part and, for example, other parts are connected to it to form the lower part, are also considered to be essentially a one-piece cast part. Due to the provision as a cast part, the shape can be improved compared to previously welded parts in such a way that the recesses 70 (here without the in figure 2 Cover 71 shown) for the imbalance generator 20 and preferably also for the motor in the position of use can be shifted further down into the base frame 30, so that the housing 12 can build flatter overall. Over and beyond Casting molds enable geometric shapes that cannot be achieved with burned-out parts that are welded together.
- the upper edge of the base frame 30 is identified by the line provided with the reference number 31 .
- the recess 70 for the imbalance generator lies at least in some areas below this line 31. In conventional configurations, the imbalance generator lies completely above the base frame 30.
- ribs 72 can be formed on the housing 12.
- the overall geometric shape of the housing 12 can be designed to be more complex overall and, in particular, it is possible to design the recess 40 for receiving the bolt in a way that nevertheless leaves the recess 70 for the unbalance generator and the motor in the area of the bottom end 74 of the base frame 30 of the housing 12 allows.
- figure 2 The complex shape of the base frame 30 of the housing 12 can be seen, which can be approximated to a double-T shape, particularly when viewed from the bottom side. In this way, a saving in material can be provided with a design that is as low as possible at the same time.
- a mechanical safety device 60 is also provided, which secures the attachment 22 against falling when the locking device on the attachment device 10 is unlocked or not correctly locked.
- the securing device 60 is designed in such a way that it catches or catches the compressor plate 22 in a position that differs from the position fixed on the housing 12 Compressor plate 22 (see figure 1 ) differs.
- the safety device 60 thus serves as a type of catching device, with the compression plate 22 being caught outside of the fixed position of the compression plate 22 on the housing 12 .
- the safety device 60 is not or only insignificantly stressed during proper operation.
- the safety device 60 is integral with the housing 12, here the base frame 30 is formed. In this case, the safety device 60 is designed in such a way that an adjustment of the compression plate 22 is not necessary.
- Securing device 60 is embodied as a catch element 62 fastened to the lower part 16 of the attachment device 10, which is set up in such a way that it interacts with a coupling section 56b (rod 56b) to catch the attachment 10, namely when the compressor plate 22 separates from the housing 12 the attachment device 10 solves.
- the catching element 62 is arranged on the lower part 16, in particular on a narrow side 64 of the lower part 16, namely on the base frame 30.
- the catching element 62 is arranged on the narrow side 64 of the housing 12 (hanging side 64), which faces away from the narrow side 66 which serves to fix the compressor plate 22 to the housing 12 bolt 46 of the locking device 47 acts (locking side 66). In this way, the engagement process can be maintained as described above.
- the catch element 62 has a first section 68 (proximal Section 68) and a second section 80 (distal section 80) adjoining the first section 68, which is curved or bent relative to the first section 68.
- the second section 80 is followed by an opening 82 through which the rod 56b can be inserted into the catch element 62 when the compression plate 22 is coupled.
- the catching element 62 With its two sections 68, 80, the catching element 62 has a hook-shaped cross section overall.
- the catch element 62 is provided twice and is arranged in the middle on both sides of the longitudinal central axis of the housing 12 in relation to the narrow side 64 of the housing 12 . As already indicated above, the catch elements 62 are designed as catch hooks 62 .
- Two spaced-apart receiving sections 76 for receiving a rigid holding element of a means of transport are formed on the compression plate 22 .
- the receiving sections 76 are designed as recesses 76 in the longitudinal members 54a, 54b of the attachment tool 22.
- the securing device 60 works as follows: the attachment of the attachment 22 to the attachment tool device 10 with the securing device 60 takes place as described above. If the attachment tool 22 is correctly positioned on the housing 16 and the locking device is locked (bolt 46 protrudes into the recess 36), the safety device 60 is not stressed. The rod 56b and the catch element 62 are then spaced apart from one another.
- the compactor plate 22 begins to separate from the housing 12, for example as a result of misoperation of the locking device, the compactor plate 22 will begin to pivot relative to the housing 12 about the longitudinal axis of the rod 56b due to gravity.
- the second and curved or bent section 80 ensures that the rod 56b does not "jump out” of the catch hook 62.
- the attachment tool 22 or the compactor plate 22 thus undergoes a pivoting movement, but does not fall completely from the attachment tool device 10 . This promotes safety when operating such attachment tool devices.
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Soil Sciences (AREA)
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Description
Die Erfindung betrifft eine Anbauwerkzeugeinrichtung nach dem Oberbegriff des Anspruchs 1.The invention relates to an attachment device according to the preamble of claim 1.
Eine Anbauwerkzeugeinrichtung in Form eines Anbauverdichters ist aus der
Weitere Anbauwerkzeugeinrichtungen sind bspw. aus der auf die Anmelderin zurückgehenden
Bei von der Anmelderin vertriebenen Anbauwerkzeugeinrichtung (Wechseladapterverdichter) erfolgt die Überwachung angekoppelter Anbauwerkzeuge mittels Sensoren, die die Stellung bzw. Anwesenheit von Kupplungs- und Verriegelungselementen erkennen und entsprechende Informationen bspw. mittels eines Anzeigedisplays an eine Bedienperson ausgeben können. Dadurch kann bei nicht korrekt angekoppeltem Werkzeug eine z.B. optische und/oder akustische Warnmeldung an die Bedienperson ausgegeben werden. Hiermit ist eine Überwachung eines Anbauwerkzeugs auf korrekte Ankopplung ermöglicht. Allerdings erfordert ein Einsatz einer solchen Sensorik einen hohen konstruktiven Aufwand, da vorhandene Komponenten angepasst und die Sensorik beschädigungsresistent in die Anbauwerkzeugeinrichtung eingebaut werden muss. Auch eine Programmierung ist erforderlich. Zudem können Fehlbedienungen, die bspw. für eine Bedienperson zu Gefahrensituationen führen können, nicht gänzlich ausgeschlossen werden.In the case of the attachment device (interchangeable adapter compactor) sold by the applicant, the attached attachments are monitored by means of sensors that detect the position or presence of coupling and locking elements and can output corresponding information to an operator, for example by means of a display. As a result, if the tool is not correctly coupled, a visual and/or acoustic warning message, for example, can be issued to the operator. This makes it possible to monitor an attachment for correct coupling. However, the use of such a sensor system requires a great deal of design effort, since it is present Components must be adapted and the sensor system must be installed in the attachment tool device in a damage-resistant manner. Programming is also required. In addition, incorrect operation, which can lead to dangerous situations for an operator, for example, cannot be completely ruled out.
Die ebenfalls auf die Anmelderin zurückgehende
Ein weiteres Anbauwerkzeug für einen Bagger ist beispielsweise aus der
Aufgabe der vorliegenden Erfindung ist es, eine Anbauwerkzeugeinrichtung zu schaffen, die möglichst universell eingesetzt werden kann, bei gleichzeitig geringen Anschaffungs- und Betriebskosten.The object of the present invention is to create an attachment device that can be used as universally as possible, while at the same time having low acquisition and operating costs.
Diese Aufgabe wird durch eine Anbauwerkzeugeinrichtung mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Weiterbildungen der Erfindung sind in Unteransprüchen genannt. Darüber hinaus finden sich für die Erfindung wichtige Merkmale in der nachfolgenden Beschreibung und in der Zeichnung, wobei diese Merkmale sowohl in Alleinstellung als auch in unterschiedlichen Kombinationen für die Erfindung wichtig sein können.This problem is solved by an attachment device with the features of claim 1 . Advantageous developments of the invention are specified in the dependent claims. In addition, features that are important for the invention can be found in the following description and in the drawing, and these features can be important for the invention both individually and in different combinations.
Die erfindungsgemäßen Anbauwerkzeugeinrichtungen haben generell den Vorteil, dass sie ganz unterschiedliche Verdichterplatten aufweisen können. Die Anbauwerkzeugeinrichtung kann daher sehr flexibel bei unterschiedlichen Nutzungssituationen eingesetzt werden, beispielsweise bei schmalen oder breiten Gräben mit entsprechender schmaler oder breiter Verdichterplatte, mit unterschiedlich geformten Verdichterplatten, oder mit unterschiedlicher Oberfläche auf der Unterseite der Verdichterplatte. Auch eine verschlissene Verdichterplatte kann einfach ausgetauscht werden, und es können auch andere Anbaugeräte, beispielsweise ein Sieblöffel angekuppelt werden.The attachment tool devices according to the invention generally have the advantage that they can have very different compactor plates. The attachment device can therefore be used very flexibly in different usage situations, for example in narrow or wide trenches with a corresponding narrow or wide compactor plate, with differently shaped compactor plates, or with a different surface on the underside of the compactor plate. A worn compactor plate can also be easily replaced, and other attachments, such as a screening bucket, can also be coupled.
Das Gehäuse der Anbauwerkzeugeinrichtung umfasst dabei neben dem Unterteil mit einem Grundrahmen noch ein Oberteil. Unter- und Oberteil sind über Puffereinrichtungen miteinander gekoppelt. Das Unterteil dient dabei zur Anbindung des Anbauwerkzeugs; wohingegen das Oberteil die Kupplung mit dem Bagger umfasst.In addition to the lower part with a base frame, the housing of the attachment tool device also includes an upper part. The lower and upper parts are coupled to one another via buffer devices. The lower part serves to connect the attachment tool; whereas the top includes the coupling with the excavator.
Durch die erfindungsgemäße Ausgestaltung des Gehäuseunterteils als einstückiges Gussteil ohne Schweißnähte im Gegensatz zu einem Gehäuseunterteil, aus Brennteilen, die über Schweißverbindungen verbunden sind, wird die Möglichkeit der Ausformung und geometrischen Anpassung des Gehäuseunterteils vereinfacht und es besteht die Möglichkeit, die Aufnahme für den Unwuchterzeuger und/oder den vorzugsweise hydraulischen Antrieb des Unwuchterzeugers in der Gebrauchslage weiter unten vorzusehen und so eine niedrigere Bauform zu realisieren. D.h., der Abstand des Unwuchterzeugers zur Unterseite des Gehäuseunterteils kann minimiert werden, was bei geschweißten Unterteilen nicht möglich ist. Insbesondere können bei Gussteilen komplexere Geometrien realisiert werden, was wiederum die in Gebrauchslage tiefere Anordnung von Motor und/oder Unwuchterzeuger ermöglicht.The inventive design of the lower housing part as a one-piece cast part without welds, in contrast to a lower housing part made of flame-cut parts that are connected via welded joints, simplifies the possibility of shaping and geometrically adapting the lower housing part and there is the possibility of mounting the imbalance generator and/or or to provide the preferably hydraulic drive of the unbalance generator in the position of use further down and thus to realize a lower design. This means that the distance between the imbalance generator and the underside of the lower part of the housing can be minimized, which is not possible with welded lower parts. In particular, cast parts can have more complex geometries be realized, which in turn allows the deeper in the position of use arrangement of motor and / or imbalance generator.
Darüber hinaus können auch weitere Aufnahmen z.B für eine Verriegelungseinrichtung unmittelbar in das Gussteil integriert werden. Z.B. wenn eine Riegelsicherung, bei der der Riegel insbesondere hydraulisch verfahren werden kann, vorgesehen ist.In addition, other mounts, e.g. for a locking device, can be integrated directly into the cast part. E.g. if a bolt safety device is provided, in which the bolt can be moved hydraulically in particular.
Unter einem im wesentlichen einstückigen Gussteil sollen insbesondere Gestaltungen verstanden werden, die zu 60%, vorzugsweise 70%, vorzugsweise 80%, vorzugsweise 90'% und vorzugsweise 100% als einstückiges Gussteil ausgebildet sind. Die übrigen Anteile des Gehäuseunterteils können dabei als separate Teile vorgesehen sein und ebenfalls als Gussteile oder auch als Stanz- oder sonstige Teile ausgebildet sein. Es handelt sich hierbei vorzugsweise ebenfalls um Metallteile. Diese Teile können dann mit dem Gussteil material-, kraft- oder formschlüssig verbunden sein, insbesondere über Schweiß- oder Schraubverbindungen.A substantially one-piece cast part is to be understood in particular as configurations that are 60%, preferably 70%, preferably 80%, preferably 90% and preferably 100% formed as a one-piece cast part. The remaining parts of the lower housing part can be provided as separate parts and can also be designed as cast parts or as stamped parts or other parts. These are preferably also metal parts. These parts can then be connected to the cast part in a material, non-positive or positive manner, in particular via welded or screwed connections.
Das Gussteil kann dabei insbesondere einen als Boden ausgebildeten Grundrahmen sowie zwei seitliche plattenartige Längsträger aufweisen, die sich unter einem Winkel nach außen geneigt von dem Grundrahmen in einer Gebrauchslage nach oben erstrecken und an diesen anschließen vorzugsweise an den seitlichen Längskanten des Grundrahmens und zwischen sich einen Raum einschließen. Die Neigung der Längsträger ergibt sich insbesondere auch durch die gießtechnischen Anforderungen neben den sich aus der Verwendung ergebenden Anforderungen, die insbesondere auch die Verwendung mit einer schmalen Verdichterplatte ermöglichen sollen, bei gleichzeitig hinreichender Stabilität beim Übergang zum Bagger. Der Grundrahmen kann dabei eine komplexere Form aufweisen, um die verschiedenen Bauteile, wie Verriegelungseinrichtung, aufzunehmen. Im Querschnitt bilden Grundrahmen und Längsträger eine U-förmige Gestaltung insbesondere mit geneigten Schenkeln, die nach außen weisen.The cast part can in particular have a base frame designed as a floor and two lateral plate-like longitudinal members, which extend upwards at an angle inclined outwards from the base frame in a position of use and connect to it, preferably at the lateral longitudinal edges of the base frame and a space between them lock in. The inclination of the side members also results in particular from the technical casting requirements in addition to the requirements resulting from the use, which in particular should also allow use with a narrow compression plate, while at the same time providing sufficient stability during the transition to the excavator. The The base frame can have a more complex shape in order to accommodate the various components, such as the locking device. In cross-section, the base frame and longitudinal member form a U-shaped configuration, in particular with inclined legs that point outwards.
Ausnehmungen für den Antrieb sowie den Unwuchterzeuger (Erregereinheit) sind ohne zusätzliche Bearbeitungsschritte, wie Brennen oder Schneiden unmittelbar realisierbar, so dass die Herstellung des Gehäuseunterteils vereinfacht ist. Darüber hinaus lassen sich Rundungen und Übergänge in Gussteilen besser realisieren. Ferner können komplexe geometrische Formen abweichend von der reinen Plattenform erzeugt werden, ohne Mehraufwand.Recesses for the drive and the imbalance generator (exciter unit) can be implemented directly without additional processing steps, such as burning or cutting, so that the manufacture of the lower housing part is simplified. In addition, curves and transitions can be better realized in cast parts. Furthermore, complex geometric shapes that deviate from the pure plate shape can be produced without additional effort.
Es ist dabei Teil der Erfindung, durch das Gussteil eine Möglichkeit zu haben, insbesondere die Einheit zur Unwuchterzeugung sowie vorzugsweise auch einen Antrieb hierzu in den Bereich des Grundrahmens zu verlegen. D.h., zumindest ein Teil dieser Einheit ist in den Bereich des Grundrahmens integriert und nicht wie bisher üblich auf diesem angeordnet. Insbesondere erstrecken sich die Ausnehmungen für Unwuchterzeuger und/oder Antrieb bis in den Grundrahmen hinein.It is part of the invention that the cast part offers the possibility, in particular, of relocating the unit for generating imbalance and preferably also a drive for this purpose to the area of the base frame. This means that at least part of this unit is integrated into the area of the base frame and not arranged on it as was previously the case. In particular, the recesses for the imbalance generator and/or drive extend into the base frame.
Sofern als Verriegelungseinrichtung eine Riegelsicherung vorgesehen ist, entfällt ein zeitaufwändiges Verschrauben der Verdichterplatte mit dem Gehäuse, insbesondere dem Unterteil. Ein solcher Riegel ist darüber hinaus im harten Alltagseinsatz einer Anbauwerkzeugeinrichtung besonders robust, und er ist einfacher fertigbar als beispielsweise eine Drehsicherung.If a locking device is provided as the locking device, there is no time-consuming screwing of the compressor plate to the housing, in particular the lower part. In addition, such a bolt is particularly robust in the tough everyday use of an attachment tool device, and it is easier to manufacture than, for example, a rotation lock.
Gemäß einer ersten vorteilhaften Weiterbildung der erfindungsgemäßen Anbauwerkzeugeinrichtung weist der Riegel einen konischen Wirkabschnitt auf. Hierdurch wird der Verriegelungsvorgang erleichtert (Reduktion des Risikos einer Blockade) und eine sichere Halterung der Verdichterplatte am Gehäuse geschaffen (Klemmwirkung).According to a first advantageous development of the attachment tool device according to the invention, the bolt has a conical active section. This facilitates the locking process (reduction of the risk of a blockage) and creates a secure mounting of the compressor plate on the housing (clamping effect).
In Weiterbildung hierzu wird vorgeschlagen, dass der Riegel im Betrieb ständig in Verriegelungsrichtung beaufschlagt ist. Hierdurch liegt im Betrieb ständig eine kraftschlüssige Verbindung vor, und der Anbauwerkzeugeinrichtung ist immer spielfrei mit dem Bagger gekoppelt. Selbst Schmutzpartikel, die zunächst zwischen Anbauwerkzeugeinrichtung und Bagger verklemmt sind und sich im Betrieb lösen, führen zu keinem Spiel, da der Riegel die Anbauwerkzeugeinrichtung automatisch gegenüber dem Bagger nachspannt.In a further development of this, it is proposed that the bolt is constantly acted upon in the locking direction during operation. As a result, there is always a non-positive connection during operation, and the attachment tool device is always coupled to the excavator without play. Even dirt particles that are initially jammed between the attachment tool device and the excavator and become loose during operation do not lead to any play, since the bolt automatically tightens the attachment tool device against the excavator.
Besonders bevorzugt ist dabei, wenn ein mittiger Riegel vorgesehen ist, der im Wesentlichen zwischen den beiden Längsträgern angeordnet ist. Die Längsträger erstrecken sich dabei vorzugsweise entlang der längeren Längsseiten, wohingegen die Schmalseiten vorzugsweise keine Begrenzung in vertikaler Richtung in Gebrauchslage aufweisen. Der Verschiebeweg des Riegels entspricht dabei im Wesentlichen der Richtung der Längsträger. Dabei steht der Riegel auch in der ausgefahrenen Stellung vorzugsweise nicht über den Umfang des Gehäuses, vorzugsweise des Unterteils, hinaus. Die Verriegelungseinrichtung kann dabei in den Grundrahmen integriert sein.It is particularly preferred if a central bolt is provided, which is arranged essentially between the two longitudinal beams. In this case, the longitudinal members preferably extend along the longer longitudinal sides, whereas the narrow sides preferably have no limitation in the vertical direction in the position of use. The displacement path of the bolt essentially corresponds to the direction of the side members. In this case, even in the extended position, the bolt preferably does not protrude beyond the circumference of the housing, preferably of the lower part. The locking device can be integrated into the base frame.
Weiterhin kann vorgesehen sein, dass eine mechanische Sicherungseinrichtung vorgesehen ist, die das Anbauwerkzeug bei unverriegelter Verriegelungseinrichtung (ungesicherter bzw. unverriegelter Zustand der Verriegelungseinrichtung) an der Anbauwerkzeugeinrichtung oder deren Gehäuse insbesondere gegen Herabfallen sichert.Provision can also be made for a mechanical safety device to be provided which, when the locking device is unlocked (unsecured or unlocked state of the locking device) on the attachment tool device or its housing, in particular against falling.
Eine solche Ausgestaltung hat den Vorteil, dass ein unbeabsichtigtes Lösen oder Herabfallen des Anbauwerkzeugs von der Anbauwerkzeugeinrichtung, bspw. infolge einer Fehlbedienung, vermieden werden kann, da die Sicherungseinrichtung das Anbauwerkzeug unabhängig vom Verriegelungszustand der Verriegelungseinrichtung an der Anbauwerkzeugeinrichtung sichert. Selbst bei einem durch Fehlbedienung unerwünschten Entriegeln der Verriegelungseinrichtung bei bspw. durch einen Baggerarm angehobener Anbauwerkzeugeinrichtung sind auf diese Weise Verletzungsgefahren erheblich reduziert, da sich das Anbauwerkzeug nicht, jedenfalls nicht vollständig, von der Anbauwerkzeugeinrichtung lösen kann. Dies trägt zur Sicherheit im Betrieb von Anbauwerkzeugeinrichtungen mit wechselbaren Anbauwerkzeugen bei.Such a configuration has the advantage that an unintentional loosening or falling of the attachment from the attachment device, e.g. as a result of incorrect operation, can be avoided since the safety device secures the attachment regardless of the locking state of the locking device on the attachment device. Even if the locking device is unlocked undesirably as a result of incorrect operation, for example when the attachment tool device is raised by an excavator arm, the risk of injury is significantly reduced in this way, since the attachment tool cannot, at least not completely, detach from the attachment tool device. This contributes to safety when operating attachment tool devices with interchangeable attachment tools.
Durch Verwirklichung einer mechanischen Sicherungseinrichtung ist eine Lösung mit hoher Betriebssicherheit (wenige Komponenten mit geringem Ausfallrisiko) geschaffen, und zwar zu einem vergleichsweise günstigen Preis. Insbesondere kann ein vollständiges Lösen des Anbauwerkzeugs bei Fehlbedienung (bspw. durch versehentliche Betätigung eines die Verriegelungseinrichtung betätigenden Handhebels) vermieden werden. Durch eine mechanisch robuste Ausführung der Bauteile der Sicherungseinrichtung kann eine einfache primäre Absicherung geschaffen werden, die auch als nachrüstbare Lösung eingesetzt werden kann.By implementing a mechanical safety device, a solution with high operational reliability (few components with a low risk of failure) is created, and at a comparatively low price. In particular, complete detachment of the attachment tool in the event of incorrect operation (for example due to accidental actuation of a hand lever that actuates the locking device) can be avoided. By designing the components of the safety device to be mechanically robust, a simple primary safeguard can be created which can also be used as a retrofit solution.
Bei der Anbauwerkzeugeinrichtung kann es sich bspw. um einen Anbauverdichter handeln. Bei dem Anbauwerkzeug kann es sich insbesondere um eine Verdichterplatte handeln. Als Anbauwerkzeuge können jedoch auch andere Komponenten angekuppelt werden, bspw. ein Sieblöffel. Die Anbauwerkzeugeinrichtung kann, insbesondere bei Ausgestaltung als Anbauwerkzeugeinrichtung, einen Unwuchterzeuger aufweisen. Der Unwuchterzeuger kann von einem Hydraulikmotor angetrieben werden, der mit einem Hydraulikanschluss verbunden ist.The add-on tool device can be, for example, an add-on compactor. The attachment tool can in particular be a compactor plate. However, other components can also be coupled as add-on tools, for example a screening bucket. The add-on tool device can have an imbalance generator, particularly when configured as an add-on tool device. The vibrator can be driven by a hydraulic motor connected to a hydraulic port.
Im Rahmen einer bevorzugten Ausgestaltung kann die Sicherungseinrichtung derart ausgebildet sein, dass diese das wechselbare Anbauwerkzeug in einer Stellung fängt oder auffängt, die von der am Gehäuse fixierten Stellung des wechselbaren Anbauwerkzeugs abweicht. Mit anderen Worten kann die Sicherungseinrichtung als Auffangeinrichtung ausgebildet sein, wobei ein Auffangen des wechselbaren Anbauwerkzeugs außerhalb von dessen Fixierstellung oder Fixierposition an der Anbauwerkzeugeinrichtung erfolgt. Damit wird die Sicherungseinrichtung bei ordnungsgemäßen Betrieb (korrekt an der Anbauwerkzeugeinrichtung angekuppeltes Anbauwerkzeug) nicht oder nur vernachlässigbar beansprucht, sondern dann, wenn es aus Sicherheitsgründen tatsächlich erforderlich ist. An sich unnötige Belastungen oder unnötiger Verschleiß kann vermieden werden, was zu einer hohen Lebensdauer der Sicherungseinrichtung beiträgt.Within the scope of a preferred embodiment, the safety device can be designed in such a way that it catches or intercepts the interchangeable attachment in a position that deviates from the position of the interchangeable attachment that is fixed on the housing. In other words, the safety device can be designed as a catching device, with the interchangeable attachment being caught outside of its fixing position or fixing position on the attachment. This means that the safety device is not stressed or only negligibly stressed during proper operation (attachment tool correctly coupled to the attachment device), but only when it is actually necessary for safety reasons. Loads that are unnecessary per se or unnecessary wear and tear can be avoided, which contributes to a long service life of the safety device.
In zweckmäßiger Weise kann die Sicherheitseinrichtung nachrüstbar ausgebildet sein. Dies erlaubt nicht nur eine Nachrüstung bestehender Anbauwerkzeugeinrichtungen, sondern auch ein Austausch der Sicherheitseinrichtung im Bedarfsfall (Ersatzteilversorgung). Die Sicherheitseinrichtung kann insbesondere durch Befestigung am Gehäuse der Anbauwerkzeugeinrichtung nachgerüstet werden, bspw. durch Verschrauben oder Verschweißen. Besonders bevorzugt ist dabei, wenn die Sicherheitseinrichtung einstückig mit dem Gehäuse verbunden ist, insbesondere indem sie Teil des Gussteils ist, insbesondere Teil des Grundrahmens.The safety device can expediently be designed so that it can be retrofitted. This allows not only retrofitting of existing attachment tool devices, but also replacement of the safety device if necessary (spare parts supply). The safety device can in particular by attachment to the housing Attachment tool device can be retrofitted, for example by screwing or welding. It is particularly preferred if the safety device is connected to the housing in one piece, in particular by being part of the cast part, in particular part of the base frame.
In vorteilhafter Weise kann die Sicherungseinrichtung als ein am Gehäuse der Anbauwerkzeugeinrichtung befestigtes oder vorgesehenes Fangelement ausgebildet sein, welches derart eingerichtet ist, dass dieses (zum Fangen des Anbauwerkzeugs) mit einem zur Fixierung des wechselbaren Anbauwerkzeugs am Gehäuse der Anbauwerkzeugeinrichtung dienenden Kuppelabschnitt des wechselbaren Anbauwerkzeugs zusammenwirkt, bspw. einem am Anbauwerkzeug befestigten vorzugsweise zylindrischen Stab. Hiermit ist eine Sicherungseinrichtung mit einfachen konstruktiven Mitteln geschaffen, da lediglich die Anbauwerkzeugeinrichtung durch ein Fangelement auszustatten ist. Am Anbauwerkzeug wird ein zur Fixierung an der Anbauwerkzeugeinrichtung dienender und damit ohnehin vorhandener Kuppelabschnitt verwendet. Das Fangelement kann den Kuppelabschnitt teilweise umgreifen oder hintergreifen. Beim ordnungsgemäßen Betrieb können Fangelement und Kuppelabschnitt voneinander beabstandet sein und erst bei einem beginnenden Herabfallen des wechselbaren Anbauwerkzeugs aneinander anliegen. Das Fangelement kann bspw. einen hakenförmigen Querschnitt aufweisen, wobei am hakenförmigen Querschnitt eine Öffnung vorgesehen ist, die vorzugsweise nach oben (von dem fixierten Anbauwerkzeug weg) orientiert ist.Advantageously, the safety device can be designed as a catching element that is fastened or provided on the housing of the attachment tool device and is set up in such a way that it (to catch the attachment tool) interacts with a coupling section of the interchangeable attachment tool that serves to fix the interchangeable attachment tool on the housing of the attachment tool device. For example, a preferably cylindrical rod attached to the attachment. This creates a safety device with simple structural means, since only the attachment tool device has to be equipped with a catch element. A coupling section, which is used for fixing to the attachment device and is therefore present in any case, is used on the attachment. The catching element can partially encompass or reach behind the coupling section. During proper operation, the catch element and the coupling section can be spaced apart and only rest against one another when the exchangeable attachment tool begins to fall down. The catching element can, for example, have a hook-shaped cross section, with an opening being provided on the hook-shaped cross section, which is preferably oriented upwards (away from the fixed attachment).
In zweckmäßiger Weise kann das Fangelement an einem Unterteil des Gehäuses, insbesondere am Grundrahmen, insbesondere an einer Schmalseite des Gehäuseunterteils, vorgesehen sein. Hiermit lässt sich eine konstruktiv günstige Lasteinleitung realisieren, da das Unterteil, insbesondere der Grundrahmen, stabil ausgestaltet und zur Lastabtragung geeignet ist, da dort auch das Anbauwerkzeug fixiert und gehalten wird. Durch die Anordnung des Fangelements an einer Schmalseite des Gehäuseunterteils kann die Art der Ankopplung (Einhängen des Anbauwerkzeugs auf der einen Seite und Verriegeln auf der anderen Seite) beibehalten werden. Zudem kann ein Anbauwerkzeug in zwei um 180° gedrehten Stellungen am Gehäuse der Anbauwerkzeugeinrichtung fixiert werden.The catch element can expediently be provided on a lower part of the housing, in particular on the base frame, in particular on a narrow side of the lower part of the housing. This allows a constructively favorable load introduction Realize because the lower part, in particular the base frame, is designed to be stable and suitable for load transfer, since the attachment tool is also fixed and held there. By arranging the catch element on a narrow side of the lower housing part, the type of coupling (hanging the attachment tool on one side and locking it on the other side) can be retained. In addition, an attachment can be fixed in two positions rotated by 180° on the housing of the attachment.
Im Konkreten kann das Gehäuse der Anbauwerkzeugeinrichtung einen ersten Verbindungsabschnitt aufweisen, der mit einem ersten Kuppelabschnitt (insbesondere zylindrischer Stab) des Anbauwerkzeugs zusammenwirkt, und einen zweiten Verbindungsabschnitt aufweisen, der mit einem zweiten Kuppelabschnitt (insbesondere zylindrischer Stab) des Anbauwerkzeugs zusammenwirkt. Die Verbindungsabschnitte sind am Gehäuse der Anbauwerkzeugeinrichtung ausgebildet bzw. befestigt und die Kuppelabschnitte sind am Anbauwerkzeug ausgebildet bzw. befestigt. Durch Kupplung der Verbindungsabschnitte mit den Kuppelabschnitten kann unter Zuhilfenahme der Verriegelungseinrichtung das Anbauwerkzeug am Gehäuse der Anbauwerkzeugeinrichtung fixiert werden.Specifically, the housing of the attachment device can have a first connection section that interacts with a first coupling section (in particular a cylindrical rod) of the attachment and a second connection section that interacts with a second coupling section (in particular a cylindrical rod) of the attachment. The connecting sections are formed or attached to the housing of the attachment device and the coupling sections are formed or attached to the attachment. By coupling the connecting sections to the coupling sections, the attachment can be fixed to the housing of the attachment with the aid of the locking device.
Im Rahmen einer bevorzugten Ausgestaltung kann das Fangelement an der Schmalseite des Gehäuses der Anbauwerkzeugeinrichtung angeordnet sein (Einhängeseite), die von der Schmalseite abgewandt ist, an der ein zur Fixierung des Anbauwerkzeugs am Gehäuse dienender Riegel der Verriegelungseinrichtung wirkt (Verriegelungsseite). Durch diese Ausgestaltung werden der Vorgang des Einkuppelns und des Wechsels des Anbauwerkzeugs nicht beeinträchtigt.In a preferred embodiment, the catching element can be arranged on the narrow side of the housing of the attachment tool device (hanging side), which faces away from the narrow side on which a bolt of the locking device serving to fix the attachment tool on the housing acts (locking side). This configuration does not impair the process of engaging and changing the attachment tool.
In zweckmäßiger Weise kann das Fangelement einen ersten, sich parallel zur Gehäuseteilunterseite oder schräg vom Gehäuseunterteil weg erstreckenden Abschnitt (proximaler Abschnitt) und einen sich an den ersten Abschnitt anschließenden zweiten Abschnitt (distaler Abschnitt) aufweisen, der relativ zum ersten Abschnitt angewinkelt oder gekrümmt ist. Dabei ist das Fangelement nach oben hin (von der Unterseite weg) offen und nach unten (zur Unterseite hin) geschlossen ausgebildet. Dadurch ist ein zuverlässiges Auffangen des Anbauwerkzeugs bei dessen Lösen von der Anbauwerkzeugeinrichtung ermöglicht, da das Fangelement das Anbauwerkzeug auch bei einer vergleichsweise großen Lösebewegung fangen kann. Wie bereits angedeutet, kann das Fangelement durch den ersten Abschnitt und den zweiten Abschnitt insgesamt einen hakenförmigen Querschnitt aufweisen.The catch element can expediently have a first section (proximal section) extending parallel to the underside of the housing part or obliquely away from the housing lower part and a second section (distal section) adjoining the first section, which is angled or curved relative to the first section. The catching element is designed to be open at the top (away from the bottom) and closed at the bottom (towards the bottom). This enables the attachment to be reliably caught when it is released from the attachment tool device, since the catch element can catch the attachment even if there is a comparatively large release movement. As already indicated, the catch element can have a hook-shaped cross section overall due to the first section and the second section.
Im Rahmen einer bevorzugten Ausgestaltung kann das Fangelement bezogen auf die Schmalseite des Gehäuses mittig angeordnet sein und/oder das Fangelement kann sich über einen Abschnitt der Schmalseite des Gehäuses hinweg erstrecken. Die mittige Anordnung des Fangelements erlaubt eine Schwenkbewegung des Anbauwerkzeugs um die Längsachse des Kuppelabschnitts, bspw. einem zylindrischen Stab, reduziert jedoch das Risiko eines (seitlichen) Verkippens zu den Enden des Kuppelabschnitts. Erstreckt sich das Fangelement über einen Abschnitt der Schmalseite des Gehäuses hinweg, ist eine hinreichend stabile Ausgestaltung des Fangelements geschaffen, so dass das Anbauwerkzeug sicher gefangen werden kann. Zudem kann einem seitlichen Verkippen des Anbauwerkzeugs zu den Enden des Kuppelabschnitts entgegengewirkt werden. Das oder die Fangelement(e) können sich bspw. über einen Bereich von 10 bis 30 Prozent (gemeinsam) der Breite der Schmalseite des Gehäuses erstrecken. Besonders bevorzugt ist die Vorsehung von zwei Fangelementen beidseits einer Längsmittelachse des Gehäuses, da hierdurch ein Verkippen noch sicherer vermieden werden kann.Within the scope of a preferred embodiment, the catch element can be arranged centrally in relation to the narrow side of the housing and/or the catch element can extend over a section of the narrow side of the housing. The central arrangement of the catching element allows a pivoting movement of the attachment around the longitudinal axis of the coupling section, for example a cylindrical rod, but reduces the risk of (lateral) tipping towards the ends of the coupling section. If the catch element extends over a section of the narrow side of the housing, a sufficiently stable design of the catch element is created so that the attachment tool can be caught securely. In addition, a lateral tilting of the attachment to the ends of the coupling section can be counteracted. The catch element(s) can, for example, extend over a range of 10 to 30 percent (together) of the width of the narrow side of the housing. The provision of two is particularly preferred Catch elements on both sides of a longitudinal center axis of the housing, since this tilting can be avoided even more securely.
Wie zuvor bereits angedeutet, kann das Fangelement der Sicherungseinrichtung als Fanghaken ausgebildet sein. Hiermit wird ist ein sicheres und zuverlässiges Auffangen des Anbauwerkzeugs bei einem unerwünschten Lösen des Anbauwerkzeugs von der Anbauwerkzeugeinrichtung ermöglicht.As already indicated above, the catch element of the safety device can be designed as a catch hook. This enables the attachment tool to be caught safely and reliably in the event of an undesired release of the attachment tool from the attachment tool device.
Im Rahmen einer bevorzugten Ausgestaltung können an dem Anbauwerkzeug zwei voneinander beabstandete Aufnahmeabschnitte zur Aufnahme eines starren Halteelements eines Transportmittels ausgebildet sein. Dies vereinfacht eine Handhabung des Anbauwerkzeugs und auch der Anbauwerkzeugeinrichtung insgesamt, da mittels der Aufnahmeabschnitte eine einfache Handhabung mittels einer Hubeinrichtung, bspw. einem Gabelstapler, möglich ist. Die Aufnahmeabschnitte können bspw. als Aussparungen in einer Seitenplatte des Anbauwerkzeugs ausgebildet sein.Within the scope of a preferred embodiment, two spaced-apart receiving sections for receiving a rigid holding element of a means of transport can be formed on the attachment. This simplifies handling of the attachment tool and also of the attachment tool device as a whole, since simple handling by means of a lifting device, for example a forklift, is possible by means of the receiving sections. The receiving sections can be designed, for example, as recesses in a side plate of the attachment tool.
Der Riegel sichert vorzugsweise den zweiten Kuppelabschnitt am zweiten Verbindungsabschnitt. Der erste Kuppelabschnitt wird am ersten Verbindungsabschnitt also allein durch Form und Orientierung des ersten Verbindungsabschnittes gehalten, so dass nur am zweiten Verbindungsabschnitt eine Sicherung durch den erfindungsgemäß vorgesehenen Riegel erforderlich ist. Diese Ausgestaltung ist kostengünstig und stabil und gestattet im Alltagseinsatz ein schnelles Demontieren beziehungsweise Montieren der Verdichterplatte am Gehäuse.The latch preferably secures the second dome portion to the second connection portion. The first coupling section is held on the first connecting section solely by the shape and orientation of the first connecting section, so that securing by the bolt provided according to the invention is only required on the second connecting section. This configuration is inexpensive and stable and allows the compressor plate to be quickly dismantled or assembled on the housing in everyday use.
Der Riegel wird vorteilhafterweise durch einen doppelt wirkenden Hydraulikzylinder mittels der Hydraulikversorgung des Baggers betätigt. Hierdurch können hohe Verriegelungskräfte erzeugt werden, die die Verdichterplatte - vor allem im Zusammenspiel mit dem konischen Wirkabschnitt - besonders sicher am Gehäuse halten. Die Verwendung der Hydraulikversorgung des Baggers macht eine separate Energieversorgung für die Verriegelung der Verdichterplatte am Gehäuse hinfällig. Hierdurch wird der Aufbau der Anbauwerkzeugeinrichtung einfacher und es werden weitere Kosten gespart.The bolt is advantageously by a double-acting hydraulic cylinder by means of the hydraulic supply of the excavator operated. As a result, high locking forces can be generated which hold the compression plate particularly securely on the housing, especially in conjunction with the conical active section. Using the excavator's hydraulic supply eliminates the need for a separate power supply to lock the compressor plate to the housing. This makes the structure of the attachment device simpler and further costs are saved.
Vorgeschlagen wird ferner, dass der Unwuchterzeuger mit einem Hydraulikmotor zusammenwirkt, der mit dem Hydraulikanschluss verbunden ist, und dass zwischen zweitem Druckanschluss und Hydraulikmotor ein Rückschlagventil angeordnet ist, welches zum Hydraulikmotor hin sperrt. Dies hat zur Folge, dass der Unwuchterzeuger nur dann im Betrieb ist, wenn der erste Druckanschluss als druckbeaufschlagter Vorlauf geschaltet ist. Wird dagegen vom Bagger aus der zweite Druckanschluss als druckbeaufschlagter Vorlauf geschaltet, wird ein Antrieb des Hydraulikmotors durch das Rückschlagventil verhindert. Dieser Betriebszustand (stillstehender Unwuchterzeuger) kann zum Wechseln der Verdichterplatte genutzt werden. Dies insbesondere deshalb, da auf Grund der Verwendung des zweiten Druckanschlusses als druckbeaufschlagter Vorlauf in der Anbauwerkzeugeinrichtung ein Hydraulikdruck zur Verfügung steht, der zur Betätigung des Riegels genutzt werden kann.It is also proposed that the imbalance generator interacts with a hydraulic motor that is connected to the hydraulic connection, and that a nonreturn valve is arranged between the second pressure connection and the hydraulic motor and blocks the hydraulic motor. The consequence of this is that the imbalance generator is only in operation when the first pressure connection is switched as a pressurized flow. If, on the other hand, the second pressure connection is switched from the excavator as a pressurized flow, the check valve prevents the hydraulic motor from being driven. This operating state (standstill imbalance generator) can be used to change the compressor plate. This in particular because, due to the use of the second pressure connection as a pressurized flow in the attachment tool device, a hydraulic pressure is available which can be used to actuate the bolt.
Bei vielen Anbauwerkzeugeinrichtungen ist gewünscht, dass der Unwuchterzeuger in einer Drehrichtung und in einer anderen Drehrichtung arbeiten kann. Dies wird im Normalfall dadurch realisiert, dass die beiden Druckanschlüsse wahlweise als druckbeaufschlagter Vorlauf oder als druckloser Rücklauf verwendet werden können. Um dennoch im normalen Betrieb die Verdichterplatte der Anbauwerkzeugeinrichtung wechseln zu können, ist ein Betriebszustand der Anbauwerkzeugeinrichtung erforderlich, in dem der Unwuchterzeuger nicht arbeitet. Dies wird durch ein Auf-/Zuventil realisiert, welches den Strom des Hydraulikfluids zum oder vom Hydraulikmotor unterbricht, wodurch der Unwuchterzeuger abgeschaltet wird. Durch Rückschlagventile, welche vom jeweils anderen Druckanschluss hydraulisch aufsteuerbar sind, wird dabei sichergestellt, dass die Hydraulikleitungen beim Abschalten und dem aufgrund seiner Massenträgheit weiterlaufenden Unwuchterzeuger nicht vollständig drucklos beziehungsweise entleert werden.In many attachment devices it is desirable that the vibrator can operate in one direction of rotation and in another direction of rotation. Normally, this is achieved by the fact that the two pressure connections can be used either as a pressurized flow or as an unpressurized return. To nevertheless in normal operation the To be able to change the compression plate of the attachment tool device, an operating state of the attachment tool device is required in which the imbalance generator is not working. This is realized by an open/close valve, which interrupts the flow of hydraulic fluid to or from the hydraulic motor, thereby switching off the imbalance generator. Check valves, which can be opened hydraulically from the respective other pressure connection, ensure that the hydraulic lines are not completely depressurized or emptied when the system is switched off and the unbalance generator continues to run due to its mass inertia.
Nachfolgend werden Ausführungsformen der Erfindung unter Bezugnahme auf die beiliegenden Zeichnungen näher erläutert. In den Zeichnungen zeigen:
- Figur 1
- eine perspektivische Darstellung einer Anbauwerkzeugeinrichtung mit einem Anbauwerkzeug;
- Figur 2
- eine Anbauwerkzeugeinrichtung gemäß
Figur 1 und - Figur 3
- ein Gehäuseunterteil der Anbauwerkzeugeinrichtung.
- figure 1
- a perspective view of an attachment tool device with an attachment tool;
- figure 2
- an attachment device according to
figure 1 and - figure 3
- a lower housing part of the attachment device.
Eine Anbauwerkzeugeinrichtung trägt in
Das Oberteil 14 ist mittels einer Drehdurchführung 24 mit einem Kupplungsteil (nicht dargestellt) verbunden, welches an einem Arm eines nicht gezeigten Baggers befestigt werden kann. Hierzu verfügt das Kupplungsteil über nicht gezeigte hydraulische Schnellanschlüsse, mit denen die Anbauwerkzeugeinrichtung 10 an eine Hydraulikversorgung des Baggers angeschlossen werden kann. Das Oberteil 14 umfasst ebenfalls zwei Längsträger 29a,b, wobei zwischen den Längsträgern 28a,b des Unterteils 16 und den Längsträgern 29a,b des Oberteils 14 die Puffereinrichtungen 18 vorgesehen und an diesen festgelegt sind.The
Das Unterteil 16 umfasst zwei seitliche Längsträger 28a und 28b, die an einen einen Boden bildenden Grundrahmen 30 seitlich nach vertikal anschließen und einen Raum zwischen sich ausbilden. Die Längsträger 28a und 28b sind ähnlich gestaltet, so dass nachfolgend der Einfachheit halber im Wesentlichen auf den Längsträger 28a Bezug genommen wird. Im Querschnitt bilden Grundrahmen 30 und Längsträger 28a,b eine nach oben offene U-förmige Gebrauchslage.The
Das Gehäuse 12 weist ungefähr in seiner axialen Mitte eine Ausnehmung 40 im Grundrahmen 30 auf, in der ein doppelt wirkender Hydraulikzylinder angeordnet ist. Eine Kolbenstange weist in Richtung zur Ausnehmung 36 und ist mit einem bolzenartigen Riegel 46 (vergleiche
Die Verdichterplatte 22 weist eine flache Bodenplatte 50 auf, die im Betrieb die eigentliche Verdichtungsarbeit leistet. Deren hinterer Endabschnitte 52b verläuft schräg nach oben. Der vordere Endabschnitt 52a ist ebenfalls flach in der Ebene der Bodenplatte 50 ausgebildet. An der Bodenplatte 50 sind zwei in Längsrichtung verlaufende Seitenplatten 54a und 54b angeschweißt. Zwischen diesen sind wiederum zwei horizontale (in Gebrauchslage) und zylindrischen Querschnitt aufweisende Stäbe 56a und 56b gehalten. Der Abstand zwischen den beiden Stäben 56a und 56b entspricht exakt dem Abstand zwischen den inneren Radien (ohne Bezugszeichen) der beiden Ausnehmungen 32 und 36 in den Längsträgern 28a und 28b des Unterteils 16 des Gehäuses 12. Auch die Radien der Stäbe 56a und 56b entsprechen denen der beiden Ausnehmungen 32 und 36.The
Zur Anbringung der Verdichterplatte 22 am Gehäuse 12 wird, bei eingefahrenem bolzenartigem Riegel 46, zunächst der Stab 56b in die Ausnehmung 32 eingeführt. Dann werden die Verdichterplatte 22 einerseits und das Gehäuse 12 andererseits relativ zueinander um die Achse des Stabs 56b verschwenkt, bis der Stab 56a vollständig gegen den oberen Rand der Ausnehmung 36 aufgenommen ist. Nun wird der bolzenartige Riegel 46 in die Ausnehmung 36 ausgefahren. Durch den konischen Wirkabschnitt 48 am jeweiligen bolzenartigen Riegel 46 wird der Stab 56a in der Ausnehmung 36 verklemmt. Somit ist die Verdichterplatte 22 starr mit dem Unterteil 16 des Gehäuses 12 der Anbauwerkzeugeinrichtung 10 verbunden. Insoweit bilden die Ausnehmungen 32 und 36 erste und zweite Verbindungsabschnitte, und die Stäbe 56a und 56b erste und zweite Kuppelabschnitte. Zum Demontieren der Verdichterplatte 22 wird in der umgekehrten Reihenfolge vorgegangen.To attach the
Erfindungsgemäß ist dabei vorgesehen, dass das Unterteil 16 im Wesentlichen als einstückiges Gussteil ausgebildet ist. Als im wesentlichen einstückiges Gussteil werden auch solche Unterteilgestaltungen 16 angesehen, bei denen das Unterteil zu wenigstens 60% als einstückiges Gussteil ausgebildet ist und z.B. weitere Teile hiermit zur Bildung des Unterteils verbunden sind. Durch die Vorsehung als Gussteil kann die Form gegenüber bisher verschweißten Teilen so verbessert werden, dass die Ausnehmungen 70 (hier ohne den in
Um die gewünschte Stabilität des Unterteils 12 bereitzustellen, können Rippen 72 am Gehäuse 12 angeformt sein. Die gesamte geometrische Form des Gehäuses 12 kann insgesamt komplexer ausgestaltet werden und insbesondere ist es möglich, die Ausnehmung 40 zur Aufnahme des Riegels in einer Weise zu gestalten, die gleichwohl die Ausnehmung 70 für den Unwuchterzeuger und den Motor im Bereich des bodenseitigen Endes 74 des Grundrahmens 30 des Gehäuses 12 ermöglicht. Insbesondere in
Um ein Herabfallen des wechselbaren Anbauwerkzeugs 22 bzw. der Verdichterplatte 22 von der Anbauwerkzeugeinrichtung 10 zu vermeiden, ist ferner eine mechanische Sicherungseinrichtung 60 vorgesehen, die das Anbauwerkzeug 22 bei unverriegelter oder nicht korrekt verriegelter Verriegelungseinrichtung an der Anbauwerkzeugeinrichtung 10 gegen Herabfallen sichert.In order to prevent the
Die Sicherungseinrichtung 60 ist derart ausgebildet, dass diese die Verdichterplatte 22 in einer Stellung fängt oder auffängt, die von der am Gehäuse 12 fixierten Stellung der Verdichterplatte 22 (siehe
Die Sicherungseinrichtung 60 ist einstückig mit dem Gehäuse 12, hier den Grundrahmen 30, ausgebildet. Dabei ist die Sicherungseinrichtung 60 derart ausgebildet, dass eine Anpassung der Verdichterplatte 22 nicht erforderlich ist.The
Die Sicherungseinrichtung 60 ist als ein am Untertel 16 der Anbauwerkzeugeinrichtung 10 befestigtes Fangelement 62 ausgebildet, welches derart eingerichtet ist, dass dieses zum Fangen des Anbauwerkzeugs 10 mit einem Kuppelabschnitt 56b (Stab 56b) zusammenwirkt, nämlich dann, wenn sich die Verdichterplatte 22 vom Gehäuse 12 der Anbauwerkzeugeinrichtung 10 löst.Securing
Das Fangelement 62 ist an dem Unterteil 16 insbesondere an einer Schmalseite 64 des Unterteils 16 angeordnet, und zwar am Grundrahmen 30. Das Fangelement 62 ist an der Schmalseite 64 des Gehäuses 12 angeordnet (Einhängeseite 64), die von der Schmalseite 66 abgewandt ist, an der ein zur Fixierung der Verdichterplatte 22 am Gehäuse 12 dienender Riegel 46 der Verriegelungseinrichtung 47 wirkt (Verriegelungsseite 66). Auf diese Weise kann der Einkuppelvorgang wie oben beschrieben beibehalten werden.The catching
Das Fangelement 62 weist einen ersten, sich parallel zur Gehäuseteilunterseite erstreckenden Abschnitt 68 (proximaler Abschnitt 68) und einen sich an den ersten Abschnitt 68 anschließenden zweiten Abschnitt 80 (distaler Abschnitt 80) auf, der relativ zum ersten Abschnitt 68 gekrümmt bzw. gebogen ist. An den zweiten Abschnitt 80 schließt sich eine Öffnung 82 an, über die der Stab 56b beim Ankuppeln der Verdichterplatte 22 in das Fangelement 62 eingeführt werden kann. Das Fangelement 62 weist mit seinen beiden Abschnitten 68, 80 insgesamt einen hakenförmigen Querschnitt auf.The
Das Fangelement 62 ist zweifach vorgesehen und bezogen auf die Schmalseite 64 des Gehäuses 12 mittig beidseits der Längsmittelachse des Gehäuses 12 angeordnet. Wie zuvor bereits angedeutet, sind die Fangelemente 62 als Fanghaken 62 ausgebildet.The
An der Verdichterplatte 22 sind zwei voneinander beabstandete Aufnahmeabschnitte 76 zur Aufnahme eines starren Halteelements eines Transportmittels ausgebildet. Die Aufnahmeabschnitte 76 sind als Aussparungen 76 in den Längsträgern 54a, 54b des Anbauwerkzeugs 22 ausgebildet. Hiermit kann die Verdichterplatte 22 und auch die Anbauwerkzeugeinrichtung 10 insgesamt durch eine Hubvorrichtung, bspw. ein Gabelstapler, auf einfache Weise gehandhabt werden.Two spaced-apart receiving
Die Sicherungseinrichtung 60 wirkt wie folgt: Das Anbringen des Anbauwerkzeugs 22 an der Anbauwerkzeugeinrichtung 10 mit Sicherungseinrichtung 60 erfolgt wie oben beschrieben. Ist das Anbauwerkzeug 22 ordnungsgemäß am Gehäuse 16 positioniert und die Verriegelungseinrichtung verriegelt (Riegel 46 steht in die Ausnehmung 36 vor), ist die Sicherungseinrichtung 60 unbeansprucht. Der Stab 56b und das Fangelement 62 sind dann voneinander beabstandet.The securing
Falls sich die Verdichterplatte 22 jedoch vom Gehäuse 12 zu lösen beginnt, bspw. infolge einer Fehlbetätigung der Verriegelungseinrichtung, beginnt die Verdichterplatte 22 schwerkraftbedingt eine Schwenkbewegung relativ zum Gehäuse 12 um die Längsachse des Stabes 56b.However, if the
Im Laufe der Schwenkbewegung bewegt sich der Stab 56b aus der Ausnehmung 32 heraus und gelangt mit dem Fangelement 62 in Eingriff, welches die Verdichterplatte 22 auf diese Weise im Sinne eines Fanghakens 62 auffängt.In the course of the pivoting movement, the
Der zweite und gekrümmte bzw. gebogene Abschnitt 80 sorgt dafür, dass der Stab 56b nicht aus dem Fanghaken 62 "herausspringt". Das Anbauwerkzeug 22 bzw. die Verdichterplatte 22 erfährt somit eine Schwenkbewegung, fällt jedoch nicht von der Anbauwerkzeugeinrichtung 10 vollständig herunter. Dies begünstigt die Sicherheit im Betrieb solcher Anbauwerkzeugeinrichtungen.The second and curved or bent section 80 ensures that the
Claims (13)
- Attachment tool (10), in particular an attachable compactor (10), which can be coupled to an excavator, comprising a housing (12) having a lower part (16) and an upper part (14) which are connected via flexible buffer devices (18), and comprising a replaceable attachment (22), in particular a compactor plate (22), the attachment (22) being detachably fixable to the housing (12) by means of a locking device, characterized in that the lower housing part (16) is formed substantially in one piece as a cast part.
- Attachment tool (10) according to claim 1, characterized in that the lower part (16) has a base frame (30) forming a floor and two lateral longitudinal members (28a, b).
- Attachment tool (10) according to claim 1 or claim 2, characterized in that the lower housing part (16) has one or more recesses (40, 70) for receiving a drive (motor) and/or an imbalance generator.
- Attachment tool (10) according to claim 3, characterized in that the one or more recesses (40, 70) are provided in the longitudinal members (28a, b) and/or the base frame (30), and in particular the base frame comprises at least partial regions of the recesses (40, 70).
- Attachment tool (10) according to claim 4, characterized in that the recess (70) for receiving the imbalance generator and/or the drive extends at least in part into the region of the base frame (30), in particular up to the floor-side region (74) of the base frame (30).
- Attachment tool (10) according to any of the preceding claims, characterized in that a securing device (60), which secures the attachment (22) against falling down, is integrally formed on the housing (12), in particular on the lower part (16) and in particular on the base frame (30), when the locking device is not locked.
- Attachment tool (10) according to claim 6, characterized in that the securing device is designed as a catch device (62), in particular as a catch hook, which interacts with a coupling portion (56a) of the interchangeable attachment(22).
- Attachment tool (10) according to claim 7, characterized in that an in particular central catch hook (62) or two catch hooks (62) arranged symmetrically to the longitudinal center axis of the housing (12) are provided.
- Attachment tool (10) according to claim 7 or claim 8, characterized in that the catch device (62) is arranged on a narrow side (64) of the housing (12) that faces away from the narrow side (66) on which a latch (46) of the locking device (47), which serves to fix the attachment (22) to the housing (12), acts.
- Attachment tool (10) according to any of the preceding claims, characterized in that a locking device is formed by at least one displaceable latch (46) which in particular has a conical operating portion (48) and is in particular constantly acted upon in the locking direction during operation.
- Attachment tool (10) according to any of the preceding claims, characterized in that the housing (12) has a first connecting portion that interacts with a first coupling portion (56b) of the compactor plate (22) and a second connecting portion that interacts with a second coupling portion (56a) of the compactor plate (22), in that the first connecting portion has at least one slot-like recess (32) extending at least substantially parallel to the compactor plate (22) and the second connecting portion has a recess (36) which is open to the compactor plate (22) and which has at least one edge (38) extending substantially orthogonally to the compactor plate (22), and in that the latch (46) secures the second coupling portion (56a) on the second connecting portion.
- Attachment tool (10) according to claim 11, characterized in that the first connecting portion is formed on one of the axial ends of the longitudinal members (28a, 28b) lying next to one another and the second connecting portion is formed on the other of the axial ends lying next to one another.
- Attachment tool (10) according to claim 11 or claim 12, characterized in that the two coupling portions (56a, 56b) each extend in the transverse direction and have an at least substantially cylindrical cross section.
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DE102019107475.4A DE102019107475B4 (en) | 2019-03-22 | 2019-03-22 | Attachment tool setup |
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EP3712331A1 EP3712331A1 (en) | 2020-09-23 |
EP3712331B1 true EP3712331B1 (en) | 2023-05-10 |
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DE20204439U1 (en) * | 2002-01-21 | 2003-06-12 | AMMANN Verdichtung GmbH, 53773 Hennef | Soil compacting device with vibration generator, has base plate containing compartments which can be filled with foam |
DE202005006059U1 (en) * | 2005-04-15 | 2005-06-23 | MTS Gesellschaft für Maschinentechnik und Sonderbauten mbH | Cultivation compressor with adjustable exciter mass |
DE102008006211B4 (en) * | 2008-01-26 | 2012-11-29 | MTS Gesellschaft für Maschinentechnik und Sonderbauten mbH | mounted compactors |
AU2009100444A4 (en) * | 2009-05-12 | 2009-06-11 | Jaws Buckets & Attachments Pty Ltd | Double Locking Quick Hitch |
US9926677B1 (en) * | 2016-09-26 | 2018-03-27 | Caterpillar Inc. | Constant down force vibratory compactor |
DE102018110465A1 (en) | 2018-05-02 | 2019-11-07 | Mts Maschinentechnik Schrode Ag | Cultivation tooling |
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2019
- 2019-03-22 DE DE102019107475.4A patent/DE102019107475B4/en active Active
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2020
- 2020-02-25 EP EP20159171.6A patent/EP3712331B1/en active Active
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DE102019107475B4 (en) | 2024-09-12 |
DE102019107475A1 (en) | 2020-09-24 |
EP3712331A1 (en) | 2020-09-23 |
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