Quick change system

Abstract

The invention relates to a quick-change system (1) for changing additional equipment on a construction machine, comprising a quick-change device (3) which is arranged on a support (2) so as to be rotatable about a rotation axis (5) by means of a rotary drive (4) and / or to be pivotable about a pivot axis (7) by means of a pivot drive (6), the quick changer has, on one side, a first receptacle (23) for receiving and holding a tool-side first coupling element in the form of a bolt and, on the other side, a second receptacle (24) for receiving and holding a tool-side second coupling element in the form of a bolt. According to the invention, a mechanical rotation and oscillation indicator (26) is arranged on the quick-change system (1), which has at least one indicator element (27, 28) and at least one marking (29, 30) that interacts with the indicator element (27, 28) in order to monitor the rotational position and / or inclined position of the quick-change device (3) relative to the support (2).

Description

Technical Field

[0001] The invention relates to a quick-change system for replacing additional equipment / tooling on a construction machine according to the preamble of claim 1. Background Art

[0002] This quick-change system is used as a rotation and / or swing unit between the attachment and the tool of the construction machinery on an excavator or other similar construction machinery to expand the movement possibilities. This quick-change system usually includes a quick changer, which is arranged to be able to rotate around a rotation axis by means of a hydraulic rotary drive on a connecting part and can be swung around a swing axis perpendicular to the rotation axis by means of a hydraulic swing drive, and the quick changer has a receiving portion and at least one locking element for removably holding an additional device connected to the quick changer. The additional equipment connected to the quick changer - for example, a swing bucket, a gripper, a shearing machine, a compactor, a magnet, a hydraulic hammer, etc. - is rotated not only around a swing axis transverse to the longitudinal axis of the excavator arm but also around a rotation axis perpendicular to the swing axis through this quick-change system. This quick-change system is known from DE10 2020 127 313 B3.

[0003] A quick-change system of the type mentioned at the outset is also disclosed, in which the sway and tilt position of the quick-change device is monitored via electrical sensors and transmitted to a display device in the cab. However, this sensor technology is relatively fragile and expensive. In addition, the sensors require a corresponding power supply. Summary of the invention

[0004] The object of the invention is therefore to provide a quick-change system of the type mentioned at the outset which enables simple and non-destructive monitoring of the rotational and tilting position of the quick-change relative to the support and which does not require a separate power supply.

[0005] This object is achieved by a quick-change system having the features of claim 1. Suitable embodiments and advantageous developments of the invention are specified in the dependent claims.

[0006] The quick-change system for replacing additional equipment on engineering machinery according to the present invention comprises a quick-change device, which is arranged to be rotatable around a rotation axis by means of a rotary drive on a support and can be swung around an additional swivel axis by means of a swivel drive, and in order to connect a tool or an accessory, the quick-change device has a first receiving portion on one side for receiving and holding a first coupling element of a bolt shape on the tool side and a second receiving portion on the other side for receiving and holding a second coupling element of a bolt shape on the tool side. A mechanical rotation and swivel indicator is arranged on the quick-change system, and the mechanical rotation and swivel indicator has a first indicating element and a second indicating element, the first indicating element having a relevant first mark for monitoring the rotation position of the quick-change device, and the second indicating element having a relevant second mark for monitoring the tilt position of the quick-change device. In the absence of an additional power supply, the quick-change device can be quickly and reliably checked in which position it is by means of the mechanical rotation and swivel indicator. For example, it can be checked whether the quick-change device is in a non-rotating and non-tilted starting position (0 position) without the need for a high-cost sensor mechanism.

[0007] In a structurally simple and cost-effective embodiment, the indicator element can be designed in the form of a pointer with a pointer tip.

[0008] In another advantageous design, the indicating element can include a slot-shaped notch that covers the relevant marking in the starting position of the quick-change device. Therefore, in the starting position of the quick-change device, the marking can be clearly seen in the slot-shaped notch.

[0009] In the combined rotation and swing indicator, two indicating elements, i.e. the first and second indicating elements, can be arranged on a common support plate. For example, the common support plate can be arranged on the driver housing, and the two markings can be arranged on the crossbar of the quick connector and the support.

[0010] However, the first indicator element and the second indicator element can also be arranged on separate support plates. For example, the second indicator element can be arranged on the crossbar of the support and the relevant marking can be arranged on the support neck of the drive housing. Alternatively, the second indicator element can be arranged on the support neck of the drive housing and the relevant marking can be arranged on the crossbar of the support.

[0011] In a cost-effective embodiment, the support plate with the display element can be designed as a sheet metal part. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Further particular features and advantages of the present invention emerge from the following description of preferred embodiments with reference to the accompanying drawings. The drawings show:

[0013] Figure 1A quick-change system with a rotatable and tiltable quick-change device is shown in a perspective view;

[0014] Figure 2 Show Figure 1 A front view of the quick-change system shown with the quick-changer in a non-rotated and non-tilted starting position;

[0015] Figure 3 Show Figure 2 Detailed view of area A in the middle;

[0016] Figure 4 Show Figure 1 A front view of the quick-change system shown with the quick-changer in a rotated position relative to a starting position;

[0017] Figure 5 Show Figure 4 Detailed view of area B in the middle;

[0018] Figure 6 Show Figure 1 A front view of the quick-change system shown with the quick-changer in an inclined position relative to a starting position;

[0019] Figure 7 Show Figure 6 Detailed view of the middle C area;

[0020] Figure 8 A front view showing another embodiment of a quick-change system having a quick changer in a starting position;

[0021] Fig. 9 Show Figure 8 Detailed view of area D in the middle;

[0022] Fig.10 Show Figure 8 Detailed view of the middle E area;

[0023] Fig.11 A front view showing another embodiment of a quick-change system having a quick changer in a starting position;

[0024] Fig.12 Show Fig.11 Detailed view of area F in the middle. DETAILED DESCRIPTION

[0025] Figure 1A quick-change system 1, also called a tiltrotator, is shown for changing additional equipment on an excavator or similar construction machinery. The quick-change system 1 comprises a quick-change device 3 which is arranged rotatably and swivellably on a support 2 by means of a rotary and swivel drive and is designed for automatic or manual connection of additional equipment. In the illustrated embodiment, the quick-change device 3 can be rotated by 360° about a rotation axis 5 on the support 2 by means of a hydraulic rotary drive 4 and can be swivelled about a swivel axis 7 perpendicular to the rotation axis 5 by means of a hydraulic swivel drive 6, and the support can be connected to an excavator arm or other additional elements of the construction machinery either directly or via a hydraulically operable quick-change device.

[0026] The quick-change system 1 designed as a tilting rotator comprises a drive housing 8 in which the quick-change device 3 can be rotated 360° around a rotation axis 5 oriented vertically. In order to deliver hydraulic oil to the quick-change device 3, a hydraulic rotation guide not shown in the drawings is also arranged in the drive housing 8, which has a stator arranged in a non-rotatable manner relative to the drive housing 8 and a rotor supported in a rotatable manner inside the stator. The rotary drive 4 comprises a hydraulic motor 9 designed as a hydraulic drive, through which the quick-change device 3 can be rotated 360° relative to the drive housing 8 around the rotation axis 5 under motor drive via a transmission mechanism having a worm gear arranged inside the drive housing 8 and a transmission worm gear that can be rotated by the hydraulic motor 9.

[0027] The drive housing 8 is arranged on the connecting part 2 via laterally projecting bearing journals 10 in two bearing holes 11 spaced apart from one another so as to be pivotable about a pivot axis 7 perpendicular to the rotation axis 5 and can be pivoted relative to the connecting part 1 about the pivot axis 6 via a hydraulic pivot drive 6. Figure 1 and Figure 2 The position shown in the figure is swiveled by approximately + / -45°. The additional device connected to the quick-change device 3 can be rotated not only about the rotation axis 5 but also tilted relative to the support 2 about a swivel axis 7 perpendicular to the rotation axis 5 by means of the tilting rotator 1, which is also referred to as a rotary swivel drive, thereby expanding the movement possibilities and thus the range of applications.

[0028] In the embodiment shown, the support member 2 has two mutually parallel side cheeks 12 and a front and rear crossbeam 13, which has a bearing hole 11 arranged thereon. The drive housing 8 is supported in a manner that can swing around the swing axis 7 via two bearing necks 10 in the bearing holes 11 of the front and rear crossbeams 13. An opening for accommodating two mutually parallel and mutually spaced bolt-type coupling elements 14 and 15 is arranged in the two side cheeks 12 of the support member 2 shown, and the bolt-type coupling elements 14 and 15 are used to be connected to the quick changer on the excavator side. However, the support member 2 can also be directly installed on the arm and connecting rod of the excavator without being connected in the middle, for example, a hydraulically operated quick changer.

[0029] In the embodiment shown, the swing drive 6 is formed by two double-acting servo cylinders, each of which has a cylinder housing 16 and 17 fixed on the corresponding side cheeks 12 of the connecting part 2 and a piston rod 18 or 19 that is movably arranged in the cylinder housing 19 and can be hydraulically moved. The free ends of the piston rods 18 and 19 are connected to the drive housing 8 via hinge holes 20 and corresponding brackets 21. Therefore, the drive housing 8 and the quick changer 3 supported therein in a rotatable manner can be tilted relative to the support 2 by the corresponding in and out movement of the two piston rods 18 and 19 of the servo cylinder. However, the swing drive 6 can also be formed by a hydraulic motor or other suitable hydraulic drive.

[0030] like Figure 1 Shown, the quick changer 3 designed for connecting additional equipment or tools includes a housing 22 implemented as a welded structure or a casting, the housing has a first receiving portion 23 open to one side and a second receiving portion 24 open to the other side and downwards, the first receiving portion 23 is used to receive and hold the first bolt-type coupling element of the tool side on one side, and the second receiving portion 24 is used to receive and hold the second bolt-type coupling element of the tool side on the other side. The first receiving portion 23 open to one side is implemented as a claw or fork. In addition, a foldable grab hook 25 for preventing the connected tool from accidentally falling is arranged on the receiving portion. The second receiving portion 24 open to the other side and downwards has a curved lower abutment surface for abutting against the bolt-shaped coupling element. A locking device not shown here is arranged on the second receiving portion 24, and the locking device has two locking bolts that can move between the locking position moved out and the unlocking or replacement position moved in. DE 10 2018 128 479A1 discloses an embodiment of a hydraulically operable quick changer 3 for automatically connecting tools. Reference is made to this document for the known structure and function of such hydraulically actuated quick-change devices. Various additional devices, such as swing buckets, grippers, shears, compactors, magnets, hydraulic hammers, etc., can be connected to the quick-change device 3 .

[0031] A mechanical rotation and sway indicator 26 is arranged on the quick-change system 1 in order to monitor the rotation and tilting position of the quick-change device relative to the support. Figures 1 to 7 In the embodiment shown, the combined mechanical rotation and swivel indicator 26 is provided with two pointer-shaped indicator elements 27 and 28 arranged on the drive housing 8 , a first marking 29 arranged on the quick changer 3 and a second marking 30 arranged on the crossbar 13 of the support 2 .

[0032] in particular Figure 3 The pointer tips 31 and 32 are shown, which cooperate with the two pointer-shaped indicator elements 27 and 28 and the markings 29 and 30. Figures 1 to 7 In the embodiment shown, the two pointer-shaped indicator elements 27 and 28 are arranged on a common support plate 34, which is fixed to the drive housing 8 via screws 33. The support plate 34 with the two pointer-shaped indicator elements 27 and 28 can be designed as a sheet metal stamping. The pointer tips 31 and 32 of the two pointer-shaped indicator elements 27 and 28 point in opposite directions. The markings 29 and 30 are mounted so that the markings 29 and 30 are on the Figure 2 and Figure 3 In the illustrated non-rotated and non-tilted starting position (0 position) of the quick changer 3, the pointer tips 31 and 32 are aligned. Furthermore, groove-shaped recesses 35 and 36 are arranged in the pointer-shaped indicator elements 27 and 28, in which the markings 29 and 30 can be seen in the non-rotated and non-tilted 0 position of the quick changer 3. This makes it possible to quickly and safely check whether the quick changer 2 is in the non-rotated and non-tilted 0 position even without an electronic display.

[0033] According to Figure 4 and Figure 5 When the quick changer 3 rotates around the vertical rotation axis 5, the mark 29 on the quick changer 3 moves out of the visible range of the pointer-shaped indicator element 27, so that the rotation of the quick changer 3 relative to the 0 position can be easily identified.

[0034] According to Figure 6 and Figure 7 If the quick changer 3 tilts due to the swinging about the swing axis 7 perpendicular to the rotation axis 5, the marking 30 on the side part 13 moves out of the visible range of the pointer-shaped indicator element 28, so that the swinging of the quick changer 3 relative to the 0 position, i.e. the tilting movement of the quick changer 3, can be recognized. In this way, a purely mechanical and non-destructive rotation and swing indicator is achieved that is independent of the power supply.

[0035] Figures 8 to 10 It is shown that the two pointer-shaped indicator elements 27 and 28 do not have to be arranged on a common support plate. Fig.10 The first indicator element 27 can be arranged on a first support plate 37 fixed to the drive housing 8 by means of screws 33, and the second indicator element 28 can be arranged on a second support plate 38 fixed to the crossbeam 13 of the support part 2 by means of screws 33. Then, the marking 30 assigned to the second indicator element 28 can be mounted on the bearing journal 10.

[0036] Of course, you can also Fig.11 and 12 As shown, the second indicator element 28 is arranged on the bearing journal 10 and the corresponding marking 30 is arranged on the crossbar 13 of the support part 2 .

[0037] List of reference numerals:

[0038] 1 Quick-change system

[0039] 2 Support

[0040] 3 Quick changer

[0041] 4 Rotating drive

[0042] 5 Axis of rotation

[0043] 6. Semi-rotary drive

[0044] 7 Swing axis

[0045] 8 Driver housing

[0046] 9 Hydraulic motor

[0047] 10 Support neck

[0048] 11 Support hole

[0049] 12 Side cheeks

[0050] 13 Beam

[0051] 14 First coupling element

[0052] 15 Second coupling element

[0053] 16 First cylinder housing

[0054] 17 Second cylinder housing

[0055] 18 First piston rod

[0056] 19 Second piston rod

[0057] 20 hinge holes

[0058] 21 Bracket

[0059] 22 Housing

[0060] 23 First receiving part

[0061] 24 Second receiving section

[0062] 25 Grappling Hook

[0063] 26 Rotation and swing indicators

[0064] 27 First indicator element

[0065] 28 Second indicator element

[0066] 29 First Mark

[0067] 30 Second Mark

[0068] 31 First pointer tip

[0069] 32 Second pointer tip

[0070] 33 Bolt

[0071] 34 Support plate

[0072] 35 Gap

[0073] 36 Gap

[0074] 37 First support plate

[0075] 38 Second support plate

Claims

1. A quick-change system (1) for replacing additional equipment on a construction machine, the quick-change system comprising a quick-change device (3), the quick-change device being arranged on a support (2) to be rotatable about a rotation axis (5) by means of a rotation drive (4) and to be swung about a swivel axis (7) by means of a swivel drive (6), the quick-change device having, on one side, a first receiving portion (23) for receiving and holding a first coupling element in the form of a bolt on the tool side, and on the other side, a second receiving portion (24) for receiving and holding a second coupling element in the form of a bolt on the tool side, for connecting a tool or an accessory, characterized in that: A mechanical rotation and swing indicator (26) is arranged on the quick-change system (1), and has a first indicator element (27) and a second indicator element (28), the first indicator element having a related first mark (29) for monitoring the rotation position of the quick-change device (3) relative to the support (2), and the second indicator element having a related second mark (30) for monitoring the tilting position of the quick-change device (3) relative to the support (2).

2. The quick-change system (1) according to claim 1, characterized in that: The indicator element (27, 28) is designed in the form of a pointer having a pointer tip (30, 31).

3. The quick-change system (1) according to claim 1 or 2, characterized in that: The indicator elements (27, 28) contain slot-shaped recesses (35, 36) which cover the associated markings (29, 30) in the starting position of the quick-change device (3).

4. The quick-change system (1) according to any one of claims 1 to 3, characterized in that: The first indicator element (27) and the second indicator element (28) are arranged on a common support plate (34).

5. The quick-change system (1) according to claim 4, characterized in that: A common support plate (34) is arranged on the drive housing (8), and two markings (29, 30) are arranged on the quick-change device (3) and on the crossbar (13) of the support element (2).

6. The quick-change system (1) according to any one of claims 1 to 3, characterized in that: The first indicator element (27) and the second indicator element (28) are arranged on support plates (37, 38) separated from each other.

7. The quick-change system (1) according to claim 6, characterized in that: The second indicator element (28) is arranged on the crossbar (13) of the support (4), and the associated marking (30) is arranged on the bearing journal (10) of the drive housing (8).

8. The quick-change system (1) according to claim 6, characterized in that: The second indicator element (28) is arranged on a bearing journal (10) of the drive housing (8), and the associated marking (30) is arranged on a crossbar (13) of the support (4).

9. The quick-change system (1) according to any one of claims 4 to 7, characterized in that: The support plates (34; 37, 38) are designed as sheet metal parts.

10. The quick-change system (1) according to any one of claims 1 to 9, characterized in that: The support element (2) comprises two mutually parallel side cheeks (12) having openings for receiving two mutually parallel coupling elements (14, 15) in the form of bolts.

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