EP3879034B1 - Carriage assembly for construction machine and method for same - Google Patents

Description

The invention relates to a carriage arrangement for a construction machine with a device carriage, which can be moved linearly along a substantially vertical guide device, and a carriage insert, which can be detachably connected to the device carriage, with a first connection and a second connection being provided, according to claim 1 .

The invention also relates to a method for connecting or disconnecting a slide insert to or from a device slide on a construction machine according to claim 15.

From the DE 43 12 368 C2 a device for attaching working equipment to a lifting carriage of a leader of a construction machine is known. Transversely directed, hydraulically actuated locking bolts are arranged on the device carriage, which can move into corresponding bolt receptacles on the working device in order to connect and fasten a working device. Before connecting, the working device, which is a vibrator drive in the described embodiment and can weigh up to several tons, must be aligned exactly with respect to the lifting carriage on the leader. This is time and labor consuming.

From the EP 1 983 149 B1 shows a generic carriage assembly for a construction machine. Recesses open at the top are arranged on the carriage of the construction machine, in which, to form an upper connection, transverse bolts of a carriage insert can be hung with a working device, with the carriage insert being seated on the equipment carriage. In a lower area of the carriage assembly, a second connection may be formed by transverse locking bolts.

the EP 1 983 149 B1 shows a carriage arrangement for a construction machine with a device carriage, which can be moved linearly along a substantially vertical guide device, and a carriage insert, which can be detachably connected to the device carriage, with a first connection and a second connection being provided, with the first connection being provided connection, at least one insertion link is provided, which is arranged on the device carriage, with at least one insertion bolt corresponding thereto being arranged opposite on the carriage insert, with the carriage insert being able to be pushed in from above relative to the device carriage to form the first connection, and with the second connection being at least a bolt connection is formed with a locking bolt.

In this known carriage arrangement, a rotary drive is arranged on the carriage insert, which can also have a weight of several tons and a vertical height of several meters. A lifting rope is to be used to hang the carriage insert with the rotary drive, with the carriage insert being lowered from above into the relatively narrow bolt entries. Due to the height of the arrangement, it may be necessary for a worker to climb a ladder in order to observe and control a correct insertion process for forming the upper connection from above. This process is time-consuming and can be problematic from the point of view of occupational safety.

The invention is based on the object of specifying a carriage arrangement for a construction machine and a method for connecting and disconnecting such a carriage arrangement, with a reliable connection being able to be produced efficiently and safely.

According to the invention, the object is achieved by a carriage arrangement having the features of claim 1 and by a method having the features of claim 15 . Preferred embodiments are given in the dependent claims.

The carriage arrangement according to the invention is characterized in that at least one insertion link is provided to form the first connection, which, in the position of use, is either arranged on the device carriage and open at the bottom or arranged on the carriage insert and open at the top, that corresponding thereto at least one insertion bolt is arranged opposite on the carriage insert or the device carriage, wherein, in the position of use, the carriage insert can be pushed in from below relative to the device carriage to form the first connection, and that the second connection is designed as at least one bolt connection with a locking bolt.

A basic idea of the invention can be seen in the connection of the slide insert with a device slide on the construction machine to form a first Insert the slide insert relative to the device slide from below into this connection. This process of pushing the at least one insertion bolt into the insertion slot from below can be easily observed and checked by personnel on the ground, even if the insertion takes place a few meters above the ground. This allows safe working on the ground and the use of climbing aids can be avoided.

The relative insertion from below can be achieved in that, when the device carriage is stationary, which has preferably been moved to the lower end of the vertical guide on the construction machine, in particular a leader, the carriage insert is lifted by means of a lifting cable at the upper end of the leader and thus in the device carriage is pushed in from below. The hoist rope can be an auxiliary rope of an auxiliary rope winch on the mast or a main rope, which is guided over a mast head and actuated by means of a winch on the carrier device. Alternatively, the carriage insert may be on the ground or suspended from a hoist line at a fixed vertical position while the equipment carriage is moved down the vertical track of the construction machine. Optionally, the device slide and slide insert can also be moved towards each other together.

In principle, the insertion link can be set with any course, so that a targeted insertion movement of the carriage insert into the device carriage for forming the first connection is ensured. A pre-adjustment can be achieved by the first connection. A final positioning and fixing is done by pushing in the transverse locking bolt or bolts.

According to one embodiment of the invention, it is particularly preferred that the insertion link is designed as a groove which runs essentially vertically. The insertion link can be arranged on the device carriage and directed with the opening downwards or arranged on the carriage insert and directed with the insertion opening upwards. The groove can also have a horizontal or preferably oblique section, so that the end position is approached in a guided manner.

Reliable threading of the insertion bolt into the insertion slot can be achieved in a further development of the invention in that the insertion slot in its Entry area has an insertion bevel. The width of the groove of the insertion guide, which is adapted to the diameter of the insertion bolt, is thus widened in the area of the insertion bevel.

A further advantageous embodiment of the invention is that the insertion link has an axial stop. The axial stop is located at the opposite end to the open entry area. Due to the axial stop, the entrance link can not only define the position of the carriage insert on the device carriage in a horizontal direction, but also in the vertical direction upwards. As a result, the carriage insert and the device carriage can assume their desired end position relative to one another overall. In this case, to finally secure the position, only the locking bolt or bolts of the second connection have to be inserted in a transverse direction in order to fix the carriage insert in a positionally accurate and secure manner on the device carriage. In addition, the axial stop allows high axial forces, which are directed downwards, to be transmitted from the device carriage to the carriage insert. Such axial compressive forces are to be transmitted in a drilling operation.

In principle, only a single insertion link and a single insertion bolt can be provided on a side or, in particular, a central area of the carriage arrangement. A particularly efficient and reliable fixing of the carriage insert on the device carriage is achieved according to a development of the invention in that two insertion guides are provided, one insertion guide being arranged on one of two opposite longitudinal sides of the device carriage or the carriage insert. The arrangement of the insertion links and the insertion bolts in a respective side area of the carriage insert or device carriage also allows precise observation and thus control of the insertion process and thus the fixing on the device carriage.

In principle, the at least one insertion bolt can have a cylindrical shape. Targeted guidance of the insertion movement of the carriage insert relative to the device carriage, including the possibility of a guided pivoting movement, is achieved according to one variant of the invention in that the insertion bolt has at least one flattened or planar contact section which is attached to a guide surface the introductory link comes to rest. Torque or tilting moments can be transmitted or absorbed via the at least one flattened surface of the bolt, which is not possible with cylindrical bolts. A desired pivoting or adjusting movement of the carriage insert can thus be achieved during insertion. Overall, the insertion and pivoting movement of the carriage insert can be effected relative to the device carriage in the manner of a mechanical link control.

In principle, the arrangement of the first and second connection to one another on the carriage arrangement can be provided in any way. According to a development of the invention, it is particularly advantageous that the first connection with the insertion link is arranged above the second connection. Thus, the connection with the insertion guide is the upper first connection, while the connection with the transverse connecting bolt represents the lower second connection. In this arrangement, it is particularly advantageous that the second connection is arranged close to the ground, so that the locking bolts can optionally be pushed in or pulled out by hand by a person on the ground. In principle, however, it is also possible to provide an automatic adjusting device for the locking bolts.

Furthermore, according to one embodiment of the invention, it is preferred that the first connection secures the position of the slide insert in a horizontal direction and that the second connection secures the position at least in the vertical direction. With such an arrangement, overdeterminations can be avoided, which avoids excessive stress on the components.

In principle, it can be sufficient for a secure attachment of the carriage insert that a single bolt connection is provided approximately in a central area of the carriage arrangement. According to a development of the invention, it is particularly expedient that at least two bolt connections are provided, with one bolt connection being arranged on a longitudinal side of the device carriage or the carriage insert. This is particularly useful when if two first connections are provided with two insertion links. In principle, however, more than two bolt connections and more than two insertion guides with insertion bolts can also be provided.

To produce the second connection, it is advantageous according to a further development of the invention that, to form the bolt connection, a bolt passage is formed on the device carriage and the carriage insert, through which the locking bolt protrudes for locking. In principle, two bolt passages could also be provided at least on the device carriage or at least on the carriage insert, so that a particularly reliable locking can be achieved.

For a simple and robust embodiment of the invention, provision can be made for the locking bolt to be actuatable, in particular displaceable, by hand.

Alternatively or additionally, provision can be made for the locking bolt to be adjustable between a locking position and a release position by means of a power-operated adjusting device. The adjusting device can in particular have a pressure cylinder, in particular a hydraulic cylinder. However, it is also possible to use other linear drives, such as a ball screw drive or a rack and pinion drive.

In principle, the slide insert can be used for any purpose. It is particularly advantageous according to embodiment variants of the invention that the slide insert has a rotary drive, a vibrator drive or a ram unit. In particular, these drive units enable practical use in special civil engineering.

The invention also includes a construction machine with a vertical mast, in particular a leader, which is provided with a guide device for a device carriage, the carriage arrangement according to the invention described above being provided. The advantages described above can be achieved with such a construction machine.

The method according to the invention is characterized in that the slide insert is pushed in relative to the device slide to form a first connection from below and a second connection is formed by locking using a locking bolt. The method according to the invention is carried out with the carriage arrangement described above, resulting in the advantages set out above. When the suspended carriage insert is pushed in from below, the connecting elements can be pre-positioned in relation to one another largely free of stress until the connections are closed.

Fig. 1

eine Seitenansicht eines Schlitteneinsatzes;

Fit. 2

eine perspektivische Ansicht eines Geräteschlittens;

Fig. 3

eine Seitenansicht einer erfindungsgemäßen Schlittenanordnung beim Einschieben des Schlitteneinsatzes von Fig. 1 von unten in den Geräteschlitten von Fig. 2;

Fig. 4

eine Seitenansicht der erfindungsgemäßen Schlittenanordnung von Fig. 3 im verbundenen Zustand;

Fig. 5

eine perspektivische Ansicht zur Schlittenanordnung gemäß Fig. 4;

Fig. 6

eine perspektivische, schematische Teilansicht zur ersten Verbindung;

Fig. 7

eine vergrößerte perspektivische Ansicht eines Einführbolzens für die erste Verbindung; und

Fig. 8

eine Seitenansicht einer erfindungsgemäßen Baumaschine.

The invention is described below using a preferred exemplary embodiment, which is shown schematically in the drawings. In the drawings show:

1

a side view of a slide insert;

Fit. 2

a perspective view of a device carriage;

3

a side view of a carriage assembly according to the invention when inserting the carriage insert from 1 from below into the device carriage from 2 ;

4

a side view of the carriage assembly of the invention 3 in the connected state;

figure 5

a perspective view of the carriage assembly according to FIG 4 ;

6

a perspective, schematic partial view of the first connection;

7

an enlarged perspective view of an insertion pin for the first connection; and

8

a side view of a construction machine according to the invention.

A carriage insert 20 for a carriage arrangement according to the invention is in 1 shown. The carriage insert 20 has a base frame 22 which is approximately triangular in side view and on which a rotary drive 30 with two hydraulic motors and a ring gear 32 are arranged in the exemplary embodiment shown. The drive ring gear 32 is shown in more detail in the perspective view of FIG figure 5 shown and serves to transmit a torque from the rotary drive 30 to a drill rod projecting therethrough.

Two upper brackets 24 and two lower brackets 26 are arranged on the base frame 22 on a rear side of the slide insert 20 . An insertion bolt 70 is fastened to each of the upper brackets 24, the function of which will be described in more detail below. A first bolt passage 64 is formed on each of the lower brackets 26, the function of which will also be described in more detail below.

To form the carriage arrangement according to the invention, a device carriage 40 is also provided, which is shown in more detail in 2 is shown. In order to lift the slide insert 20, one or more attachment eyes 28 can be arranged on the base frame, it being possible for a connecting element of a support cable to be accommodated in the attachment eyes 28.

To accommodate the carriage insert 20, a device carriage 40 is provided, which is closer to the figures 2 and 3 is shown. The device carriage 40 has a carriage frame 41 with an upper crossbar 42 and a lower crossbar 43 . Upper and lower guide shoes 44 are attached to a rear side of the carriage frame 41 and are designed to engage around an axial guide of a guide device 8 on a mast 6 of a construction machine 1, as partially shown in FIGS Figures 3 to 5 is shown. In this way, the device carriage 40 is mounted such that it can be moved essentially in a vertical direction along the mast 6 and can be moved axially by means of a drive (not shown). The axial drive can have a cable drive or axial displacement cylinder.

Two block-like insertion guides 52 are arranged on the side of the upper crossbar 42 of the device carriage 40 . In the exemplary embodiment shown, the insertion link is designed with a vertically directed groove 53 which is open at the bottom. Lateral insertion bevels 56 are formed at the lower open end, with a groove width being enlarged in the entry area. The side walls of the groove 53 form lateral guide surfaces 54 which are spaced apart from one another by a constant groove width. An upper end of the groove 53 is closed and forms an axial stop 58.

On the lower crossbar 43 of the device carriage 40 is a slot-like receiving space 46, so a total of two, formed laterally. A transversely directed adjusting device 80 for locking bolts is arranged on the respective inner side of the receiving space 46 . A second bolt passage 66 for the locking bolts is provided on an outer wall of the respective receiving space 46 .

Furthermore, the device carriage 40 has, in a basically known manner, a quick-coupling element 48, which in 2 is indicated with a chain line. The quick-coupling element 48 is part of a basically known quick-coupling, with which a quick connection and disconnection of energy and data lines between the device carriage 40 and the carriage insert 20 is made possible.

To form the carriage arrangement 10 according to the invention, as illustrated in FIG 3 is shown, the carriage insert 20 is positioned relative to the device carriage 40 on the mast 6 in such a way that the upper insertion bolts 70 on the carriage insert 20 lie below the insertion guides 52 on the device carriage 40 . This can be done in that either the carriage insert 20 is moved via a support cable (not shown) and/or the device carriage 40 is moved along the mast 8 .

To achieve this pre-positioning, the locking bolts 62, which can be moved transversely by the adjusting devices 80, are moved inwards into their retracted position. In this way, the lower bracket 26 with the first bolt passage 64 on the carriage insert 20 can move into the respective slot-like receiving space 46 on the device carriage 40 when the carriage insert 20 is then moved relative to the device carriage 40 from below. At the same time, the transversely inwardly projecting insertion bolts 70 on the upper holder 24 of the carriage insert 20 are moved into the insertion link 52 until they come to rest against the upper stop 58 . Since insertion takes place from below, with the carriage insert 20 still being suspended, the pre-positioning takes place in a gentle manner without any significant weight load on the insertion link 52.

The final position reached in this way is clearly shown in 4 and figure 5 shown. By inserting the insertion pin 70 in the lateral insertion links 52 is an upper first connection 50 of the carriage assembly 10 is formed. This first connection 50 achieves a horizontal alignment and a vertical upward positioning between the carriage insert 20 and the device carriage 40 . This ensures that the locking bolts 62 and the bolt passages 64, 66 are aligned with one another. By actuating the actuating devices 80, the two locking bolts 62 are now moved transversely outwards to form a second connection 60. The respective locking bolt 62 is thereby moved through the respective first bolt passage 64 on the carriage insert 20 and the second bolt passage 66 on the device carriage 40 lying on the outside. In this way, a form-fitting connection is formed at least in one axial direction, so that this second connection 60 means that the carriage insert 20 pushed in from below is now also secured in position on the device carriage 40 at the bottom. Only now is the weight of the slide insert 20 transferred to the device slide 40 via the second connection 60 .

In this way, the carriage arrangement 10 according to the invention is formed, with the carriage insert 20 being efficiently and reliably secured to the device carriage 40, as also illustrated in FIG figure 5 emerges.

The formation and operation of the first connection 50 is explained in more detail below in connection with the figures 6 and 7 explained. The insertion pin 70 can according 7 have a cylindrical bolt body 72, at the front end of which two mutually parallel flattened areas are formed as contact sections 74. At the rear end of the bolt body 52 there is a transversely directed fastening groove 76 which serves to fasten the insertion bolt 70 to the carriage insert 20 in a rotationally fixed manner.

The two flattened contact sections 74 are spaced apart from one another in such a way that their spacing corresponds to a width of the groove 53 of the insertion link 52 .

How out 6 As can be seen, the contact sections 74 of the insertion bolt 70 come into contact with the lateral guide surfaces 54 of the groove 53 of the insertion link 52, so that when the insertion bolt 70 is inserted into the respective insertion link 52, the carriage insert 20 can be aligned and, if necessary, pivoted, in particular in a vertical direction Direction takes place, allowing reliable positioning also securing the locking bolt 62 to the first bolt passage 64 and the second bolt passage 66 to form the second connection 60 .

A construction machine 1 according to the invention with the carriage arrangement 10 according to the invention with a carriage insert 20 and a device carriage 40 is in 8 shown. The device carriage 40 is slidably mounted along a guide device 8 on a mast 6, which is pivotally mounted on a carrier device 2 with a crawler chassis as an undercarriage and an upper carriage rotatably mounted thereon. A main cable 4 and an auxiliary cable 5 are guided over a mast head of the mast 6 and can be used to lift the carriage insert 20 into the device carriage 40 .

Claims (15)

1. Carriage assembly for a construction machine (1) having

   - a device carriage (40) which is linearly movable along a substantially vertical guide means (8) and

   - a carriage insert (20) which can be releasably connected to the device carriage (40), wherein a first connection (50) and a second connection (60) are provided,

   - wherein in order to form the first connection (50) at least one slotted insertion link (52) is provided which, when in usage position, is arranged either on the device carriage (40) and open in the downward direction or on the carriage insert (20) and open in the upward direction,

   - wherein corresponding thereto at least one insertion bolt (70) is arranged opposite on the carriage insert (20) or the device carriage (40), wherein, when in usage position, the carriage insert (20) can be slid in from below relative to the device carriage (40) in order to form the first connection (50), and

   - wherein the second connection (60) is designed as at least one bolt connection with a locking bolt (62).
2. Carriage assembly according to claim 1,
   characterized in that
   the slotted insertion link (52) is designed as a groove (53) which runs substantially vertically.
3. Carriage assembly according to claim 1 or 2,
   characterized in that
   the slotted insertion link (52) has an insertion slope (56) in its entrance region.
4. Carriage assembly according to any one of claims 1 to 3, characterized in that
   the slotted insertion link (52) has an axial stop (58).
5. Carriage assembly according to any one of claims 1 to 4, characterized in that
   two slotted insertion links (52) are provided, wherein a slotted insertion link (52) is in each case arranged on a longitudinal side of the device carriage (40) or the carriage insert (20).
6. Carriage assembly according to any one of claims 1 to 5, characterized in that
   the insertion bolt (70) has at least one flattened or plane contact section (74) which comes to rest against a guide surface (54) of the slotted insertion link (52).
7. Carriage assembly according to any one of claims 1 to 6, characterized in that
   the first connection (50) with the slotted insertion link (52) is arranged above the second connection (60).
8. Carriage assembly according to any one of claims 1 to 7, characterized in that
   by the first connection (50) a positional securing of the carriage insert (20) in a horizontal direction is provided and
   in that by the second connection (60) a positional securing at least in the vertical direction is provided.
9. Carriage assembly according to any one of claims 1 to 8, characterized in that
   at least two bolt connections are provided, wherein a bolt connection is in each case arranged on a longitudinal side of the device carriage (40) or the carriage insert (20).
10. Carriage assembly according to any one of claims 1 to 9,
    characterized in that
    to form the bolt connection a bolt passage (64, 66) is in each case designed on the device carriage (40) and the carriage insert (20), through which the locking bolt (62) protrudes in order to lock.
11. Carriage assembly according to any one of claims 1 to 10,
    characterized in that
    the locking bolt (62) is actuatable, in particular displaceable by hand.
12. Carriage assembly according to any one of claims 1 to 11,
    characterized in that
    the locking bolt (62) is adjustable by a power-operated positioning means (80) between a locking position and a release position.
13. Carriage assembly according to any one of claims 1 to 12,
    characterized in that
    the carriage insert (20) has a rotary drive (30), a vibratory drive or a pile driving unit.
14. Construction machine having a vertical mast (6), in particular a leader which is provided with a guide means (8) for a device carriage (40), characterized in that
    a carriage assembly (10) according to any one of claims 1 to 13 is provided.
15. Method for connecting or releasing a carriage insert (20) to or from a device carriage (40) on a construction machine (1), wherein a carriage assembly (10) according to any one of claims 1 to 13 or a construction machine (1) according to claim 14 is provided,
    wherein, in order to form a first connection (50), the carriage insert (20) is slid in from below relative to the device carriage (40) and a second connection (60) is formed through locking by means of a locking bolt (62).

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