EP3879034A1 - Carriage assembly for construction machine and method for same - Google Patents

Abstract

Sled arrangement (10) for a construction machine (1) with a device slide (40) which can be moved linearly along an essentially vertical guide device (8), and a slide insert (20) which can be detachably connected to the device slide, a first connection (50) and a second connection (60) are provided, with at least one insertion slot (52) being provided to form the first connection, which is either arranged on the device slide and open at the bottom or arranged on the slide insert and open at the top, wherein Corresponding to this, at least one insertion bolt (70) is arranged opposite on the slide insert or the device slide, the slide insert being insertable from below relative to the device slide to form the first connection, and the second connection being designed as at least one bolt connection with a locking bolt (62) is.

Description

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

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

From the DE 43 12 368 C2 a device for fastening work equipment to a lifting carriage of a leader of a construction machine is known. On the device carriage, transversely directed, hydraulically actuated locking pins are arranged, which can move into corresponding pin receptacles on the work device to connect and fasten a work device. Before connecting, the working device, which in the embodiment described is a vibrator drive, which can have a weight of up to several tons, must be aligned exactly with respect to the lifting carriage on the leader. This is time consuming and laborious.

From the EP 1 983 149 B1 shows a generic slide arrangement for a construction machine. On the slide of the construction machine there are upwardly open recesses in which transversely directed bolts of a slide insert with an implement can be hung to form an upper connection, the slide insert being seated on the implement slide. In a lower area the carriage assembly can be formed a second connection by transversely directed locking bolts.

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

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

The object is achieved according to the invention by a slide arrangement with the features of claim 1 and by a method with the features of claim 15. Preferred embodiments are given in the dependent claims.

The slide arrangement according to the invention is characterized in that at least one insertion slot is provided to form the first connection, which is either arranged on the device slide and open at the bottom or arranged on the slide insert and open at the top, that corresponding to this at least one insertion bolt opposite on the slide insert or the device slide is arranged, wherein the slide insert can be pushed in relative to the device slide to form the first connection from below, 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 connecting the slide insert to a device slide on the construction machine to form a first one Connect the slide insert relative to the device slide from below into this. This process of pushing the at least one insertion bolt into the insertion slot from below can easily be observed and controlled by personnel on the floor, even if the insertion takes place a few meters above the floor. This allows safe work on the ground and the use of a climbing aid can be avoided.

The relative insertion from below can be achieved in that when the device carriage is stationary, which is preferably driven to the lower end of the vertical guide on the construction machine, in particular a leader, the carriage insert is raised by means of a hoist rope at the upper end of the leader and thus in the Device slide 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 operated by means of a winch on the carrier device. Alternatively, the slide insert can stand on the ground or be suspended from a hoisting rope in a fixed vertical position, while the device slide is moved downwards along the vertical guide of the construction machine. Optionally, the device slide and slide insert can also be moved together towards one another.

In principle, the insertion link can be set with any desired course, so that a targeted insertion movement of the slide insert into the device slide to form the first connection is ensured. A pre-adjustment can be achieved through 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 slot is designed as a groove which runs essentially vertically. The insertion slot can be arranged on the device carriage and with the opening directed downwards or arranged on the carriage insert and with the insertion opening directed upwards. The groove can also have a horizontally or preferably inclined section, so that a guided approach to the end position takes place.

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

Another advantageous embodiment of the invention is that the insertion slot has an axial stop. The axial stop is located at the opposite end to the open entry area. Due to the axial stop, the entry link can not only define the position of the slide insert on the device slide in a horizontal direction, but also in the vertical upward direction. As a result, the slide insert and the device slide as a whole can assume their desired relative end position to one another. In this case, only the locking bolt or bolts of the second connection need to be inserted in a transverse direction for the final securing of the position, in order to fix the slide insert precisely and securely on the device slide. In addition, the axial stop allows high axial forces, which are directed downwards, to be transmitted from the device slide to the slide insert. Such axial compressive forces are to be transmitted in a drilling operation.

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

In principle, the at least one insertion bolt can have a cylindrical shape. Targeted guidance of the insertion movement of the slide insert relative to the device slide including the possibility of a guided pivoting movement is achieved according to a variant of the invention in that the insertion bolt has at least one flattened or planar contact section which is on a guide surface the entry gate comes to rest. Rotational 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, for example. A desired pivoting or adjusting movement of the slide insert can thus be achieved during insertion. Overall, the insertion and pivoting movement of the slide insert relative to the device slide can be effected in the manner of a mechanical link control.

In principle, the arrangement of the first and second connections to one another on the slide arrangement can be provided as desired. According to a development of the invention, it is particularly advantageous that the first connection with the insertion slot is arranged above the second connection. Thus, the connection with the insertion slot is the upper first connection, while the connection with the transverse connecting bolt represents the lower second connection. With this arrangement, it is particularly advantageous that the second connection is arranged close to the floor, so that the locking bolts can, if necessary, be pushed in or pulled out by hand by a person on the floor. 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. Such an arrangement can avoid over-determinations, which avoids excessive loads on the components.

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

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

For a simple and robust embodiment of the invention, it can be provided that the locking bolt can be actuated, in particular displaced, by hand.

As an alternative or in addition, it can be provided that the locking bolt can be adjusted between a locking position and a release position by means of an energy-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, for example a ball screw drive or a rack and pinion drive.

In principle, the slide insert can be used for any purpose. According to variant embodiments of the invention, it is particularly advantageous that the slide insert has a rotary drive, a vibrator drive or a ramming unit. These drive units enable, in particular, an appropriate use in special civil engineering.

The invention further comprises a construction machine with a vertical mast, in particular a leader, which is provided with a guide device for a device slide, the above-described slide arrangement according to the invention 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 by means of 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 slide insert is pushed in from below, the connecting elements can be pre-positioned with respect 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 on the basis of a preferred exemplary embodiment which is shown schematically in the drawings. In the drawings show:

Fig. 1

a side view of a slide insert;

Fit. 2

a perspective view of an equipment carriage;

Fig. 3

a side view of a slide arrangement according to the invention when inserting the slide insert from FIG Fig. 1 from below into the device slide of Fig. 2 ;

Fig. 4

a side view of the slide assembly according to the invention of Fig. 3 in connected state;

Fig. 5

a perspective view of the carriage assembly according to Fig. 4 ;

Fig. 6

a perspective, schematic partial view of the first connection;

Fig. 7

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

Fig. 8

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

A slide insert 20 for a slide arrangement according to the invention is shown in FIG Fig. 1 shown. The slide insert 20 has an approximately triangular base frame 22 in side view, on which a rotary drive 30 with two hydraulic motors and a drive ring gear 32 are arranged in the illustrated embodiment. The drive ring gear 32 is shown in greater detail in the perspective view of FIG Fig. 5 shown and serves to transmit a torque from the rotary drive 30 to a drill rod protruding through it.

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

To form the slide arrangement according to the invention, a device slide 40 is also provided, which is shown in more detail in FIG Fig. 2 is shown. To lift the slide insert 20, one or more stop eyes 28 can be arranged on the base frame, with a connecting element of a support cable being able to be received in the stop eyes 28.

To accommodate the slide insert 20, a device slide 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 cross member 42 and a lower cross member 43. On a rear side of the carriage frame 41, upper and lower guide shoes 44 are attached, which are designed to encompass an axial guide of a guide device 8 on a mast 6 of a construction machine 1, as is partially shown in FIG 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 an axial displacement cylinder.

On the upper cross member 42 of the device carriage 40, two block-like insertion slides 52 are arranged laterally. In the illustrated embodiment, the insertion slot is designed with a vertically directed, downwardly open groove 53. Lateral insertion bevels 56 are formed at the lower open end, 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 with a constant groove width. An upper end of the groove 53 is closed and forms an axial stop 58.

A slot-like receiving space 46, that is to say a total of two, is formed on the side of the lower cross member 43 of the device carriage 40. A transversely directed adjusting device 80 for locking bolts is arranged on the respective inside 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-release coupling element 48, which is shown in FIG Fig. 2 is indicated with a dash-dotted 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 slide arrangement 10 according to the invention, as illustrated in FIG Fig. 3 is shown, the slide insert 20 is positioned relative to the device slide 40 on the mast 6 in such a way that the upper insertion bolts 70 on the slide insert 20 are below the insertion slots 52 on the device slide 40. This can take place in that either the slide insert 20 is moved over a support cable (not shown) and / or the device slide 40 is moved along the mast 8.

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

The end position reached in this way is illustrated in Fig. 4 and Fig. 5 shown. By pushing the insertion bolts 70 into the lateral insertion slots 52, an upper first connection 50 of the carriage assembly 10 is formed. This first connection 50 achieves a horizontal alignment and a vertical positioning upwards between the slide insert 20 and the device slide 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 outward to form a second connection 60. The respective locking bolt 62 is moved through the respective first bolt passage 64 on the slide insert 20 and the outer second bolt passage 66 on the device slide 40. In this case, a form-fit connection is formed at least in one axial direction, so that the slide insert 20 pushed in from below is now also secured in position on the device slide 40 downwards through this second connection 60. Only now is the weight of the slide insert 20 transmitted to the device slide 40 via the second connection 60.

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

The formation and mode of operation of the first connection 50 will be described in greater detail below in connection with FIGS Figures 6 and 7th explained. The insertion bolt 70 can according to Fig. 7 have a cylindrical bolt body 72, at the front end of which two parallel flat areas are formed as contact sections 74. At the rear end of the bolt body 52, a transversely directed fastening groove 76 is made, which is used for the rotationally fixed fastening of the insertion bolt 70 to the slide insert 20.

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

How out Fig. 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 slot 52, so that when the insertion bolts 70 are inserted into the respective insertion slot 52, an alignment and, if necessary, a pivoting of the slide insert 20, in particular in a vertical one Direction is done so that a reliable positioning the locking bolt 62 to the first bolt passage 64 and the second bolt passage 66 for forming the second connection 60 is also secured.

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

Claims (15)

Slide arrangement for a construction machine (1) with - A device carriage (40) which can be moved linearly along a substantially vertical guide device (8), and - A slide insert (20) which can be detachably connected to the device slide (40), a first connection (50) and a second connection (60) being provided,
characterized, - That for forming the first connection (50) at least one insertion slot (52) is provided, which is either arranged on the device slide (40) and open at the bottom or arranged on the slide insert (20) and open at the top, - That, corresponding to this, at least one insertion bolt (70) is arranged opposite on the slide insert (20) or the device slide (40), the slide insert (20) being insertable from below relative to the device slide (40) to form the first connection (50) , and - That the second connection (60) is designed as at least one bolt connection with a locking bolt (62). Sled arrangement according to claim 1,
characterized,
that the insertion slot (52) is designed as a groove (53) which runs essentially vertically. Slide arrangement according to claim 1 or 2,
characterized,
that the insertion slot (52) has an insertion bevel (56) in its entry area. Slide arrangement according to one of Claims 1 to 3,
characterized,
that the insertion slot (52) has an axial stop (58). Slide arrangement according to one of Claims 1 to 4,
characterized,
that two insertion slots (52) are provided, one insertion slot (52) in each case being arranged on a longitudinal side of the device carriage (40) or the carriage insert (20). Slide arrangement according to one of Claims 1 to 5,
characterized,
that the insertion bolt (70) has at least one flattened or flat contact section (74) which comes to rest on a guide surface (54) of the insertion slot (52). Slide arrangement according to one of Claims 1 to 6,
characterized,
that the first connection (50) with the insertion slot (52) is arranged above the second connection (60). Slide arrangement according to one of Claims 1 to 7,
characterized,
that the first connection (50) secures the position of the slide insert (20) in a horizontal direction and
that the second connection (60) secures the position at least in the vertical direction. Slide arrangement according to one of Claims 1 to 8,
characterized,
that at least two bolt connections are provided, one bolt connection in each case being arranged on a longitudinal side of the device slide (40) or the slide insert (20). Slide arrangement according to one of Claims 1 to 9,
characterized,
that in order to form the bolt connection on the device slide (40) and the slide insert (20) a bolt passage (64, 66) is formed, through which the locking bolt (62) protrudes for locking. Slide arrangement according to one of Claims 1 to 10,
characterized,
that the locking bolt (62) can be actuated, in particular displaced, by hand. Slide arrangement according to one of Claims 1 to 11,
characterized,
that the locking bolt (62) can be adjusted between a locking position and a release position by an energy-operated adjusting device (80). Slide arrangement according to one of Claims 1 to 12,
characterized,
that the slide insert (20) has a rotary drive (30), a vibrator drive or a ramming unit. Construction machine with a vertical mast (6), in particular a leader, which is provided with a guide device (8) for a device carriage (40),
characterized,
that a slide arrangement (10) according to one of claims 1 to 13 is provided. Method for connecting or detaching a slide insert (20) to or from a device slide (40) on a construction machine (1), a slide arrangement (10) according to one of Claims 1 to 13 or a construction machine (1) according to Claim 14 being provided,
characterized,
that the slide insert (20) is pushed in from below relative to the device slide (40) to form a first connection (50) and a second connection (60) is formed by locking by means of a locking bolt (62).

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