WO1991001413A1 - Adjustable swivelling joint for an excavator or the like - Google Patents
Adjustable swivelling joint for an excavator or the like Download PDFInfo
- Publication number
- WO1991001413A1 WO1991001413A1 PCT/SE1990/000494 SE9000494W WO9101413A1 WO 1991001413 A1 WO1991001413 A1 WO 1991001413A1 SE 9000494 W SE9000494 W SE 9000494W WO 9101413 A1 WO9101413 A1 WO 9101413A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- swivelling joint
- inner ring
- outer ring
- accessory
- coupling device
- Prior art date
Links
Classifications
-
- 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
- E02F3/3618—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with two separating hooks
-
- 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
- E02F3/3654—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with energy coupler, e.g. coupler for hydraulic or electric lines, to provide energy to drive(s) mounted on the tool
-
- 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
- E02F3/3663—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat hydraulically-operated
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2271—Actuators and supports therefor and protection therefor
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2275—Hoses and supports therefor and protection therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
Abstract
In operating an excavator it is useful to be able to change the direction of the accessory, such as the dipper ladle, by turning the accessory in the horizontal plane relative to the dipper arm. By providing an adjustable swivelling joint (4, 6) between dipper arm and accessory turning may be achieved without using any drive for the actual turning. The adjustable swivelling joint substantially comprises an inner ring (4) with transverse grooves (9) and an outer ring (5) arranged to match the inner ring (4), the outer ring being connected with a base plate (6) supporting a coupling device (10-14). On turning, the coupling device will release the inner ring so that it may be turned relative to the outer ring. The force required for the turning is provided by the excavator, which through its movement and with the ladle resting on a firm underlayer forces the ladle (13) with the ladle support (16) to be turned relative to the dipper arm (1). On setting a new position, said position is fixed when the power supply is interrupted, and a spring (12) will return the cone-shaped wedge (10) of the coupling device to the groove or the recess (9).
Description
Adviustal):Le swive:L:Linq joint for an excavator or the like.
The present invention relates to an adjustable swivelling joint for an excavator or the like. To be able to better adapt the movement of an accessory to existing working conditions, the dipper arm of the excavator is provided With an adjustable swivelling joint which is connectable with the accessory.
Prior art
In operating an excavator, it has been found useful to be able to change the direct on of the accessory by turning the accessory in the horizontal plane relative to the dipper arm. With this possibility cf changing the direction of the accessory ':elative to the dipper arm, there is no immediate need of accessories change, since the same accessory is usable for de digging as well as height and lateral digging. It is nown te provide various types of hydraulically operated rotators for the turning of the accessory, and a number of types are already available on the market.
A disadvantage cf these hydraulically operated rotators is that their height will be relatively high, t 5 cm - 30 cm, which has an effect on the digging movements and limits the performance of the excavator. Further, rotatcr devices are complicated and expensive to install.
Description of the invention
In order to achieve a change of direction of an accessory relative to a dipper arm of an excavator by means of a device lacking hydraulic or other kind of drive and of a relatively low height of only around 7 cm, an adjustable swivelling joint has been developed, which will be both easy and economical to manufacture and which in use will have a minimal effect on the performance of the excavator.
Description of the fisnr
Figure 1 is a side vie, partly in cross section, of an adjustable swivelling joint with hydraulic line connectIons and articulately connected with a dipper arm and with the swivelling joint partly engaging an accessory.
Figure 2 is a top view of the adjustable swivelling joint with hydraulic lines.
Description of an embodiment
The figures show the structure of an adjustable swivelling joint according to the invention By means of bearings, the dipper arm 1 and dipper ladle link 2 of an excavator are articulately connected with the upper part 3 of the swivelling joint, the upper part being fixedly connected with an inner ring 4. The lower part of the swivelling joint essentially comprises an outer ring 5 and a base plate 6 fixedly connected to the outer ring. A circular projecting edge 7 of the inner ring 4 is adapted to fit into a corresponding groove 8 in the outer ring 5. The inner ring 4 and the outer ring 5 thus form a swivelling joint, and the base plate 6 prevents separation of the inner and outer rings.
Along its inner peripheral surface, the inner ring 4 is provided with several transverse grooves 9 arranged to cooperate with the cone-shaped wedge 10 or the like of a coupling device. The coupling device is connected with the base plate and may comprise a spring-balanced electromagnet 11 or a hydraulically or pneumatically operated control means wherein, in the deenergized state, the wedge is inserted in a groove by spring force and wherein, in the energized state, the electromagnet 11 counteracts the spring force, so that the wedge 10 may be removed from the groove 9.
On energizing, the compression spring 12 is thus compressed and the inner ring 4 is released from the coupling device connected with the base plate 6 and the outer ring 5, the inner and outer rings being released from the locking jam and becoming turnable relative to each other for setting of a desired working position for the dipper ladle 13 relative to the dipper arm 1.
The desired working position may now be achieved by means of the different movements of the dipper arm and with the ladle 13 resting on a firm underlayer and the magnet being activated, in that the dipper arm 1 is operated such that the ladle 13 is forced to turn into the desired position, and when this position has been reached the power supply will be interrupted and the spring 12 released, and the wedge 10 will be inserted by spring force in a suitable groove 9, the inner ring 4 having been locked to the base plate 6 and the outer ring 5.
For correct centering of the cone-shaped locking wedge 10 it can be provided with a guiding sleeve 14 arranged between the inner ring 4 and the magnet 11. There may also be a need of sensing the position of the wedge 10 in order to be able to indicate whether the wedge 10 is fully inserted in the groove 9 of the inner ring 4. Through a contact means 15 on the guiding sleeve, the position of the locking wedge 10 may be sensed and the corresponding measuring signal indicated in the excavator.
With this type of adjustable swivelling joint it is possible, from the driver' cab, to turn the ladle a full turn relative to the dipper arm and to lock it in desired positions.
The base plate 6 of the swivelling joint supports a hydraulic or mechanical coupling device for the dipper ladle support 16. The coupling device may be some kind of quick coupling and may partly include a double-acting or singleacting hydraulic cylinder with or without spring function and connected with a locking means in the form of, for example, a sleeve, which is capable of locking or releasing a corresponding means mounted on the dipper ladle support. For coupling of the dipper ladle support 16 of the dipper ladle 13 to the swivelling joint of the dipper arm, the base plate 6 of the swivelling joint with the coupling device is inserted in a recess or the like in the dipper ladle support.
On continued movement of the dipper arm towards the ladle support, the ladle support or the base plate will be turned such that the locking means itself will get into a position for locking the dipper ladle support 16 to the base plate 6, which, if required, will be achieved automatically or manually.
Claims
1 An adjustable swivelling joint for an excavator or the like between an arm means and an accessory such as between a dipper arm and a dipper ladle for optional adjustment and locking of the accessory relative to the arm means, characterized in that the arm means (1) is articulately connected with an inner ring (4) and the accessory (13) is detachably connected with an outer ring (5), the inner ring (4) together with the outer ring (5) surrounding the inner ring forming the swivelling joint, and that a coupling device (10, 11) provided for the inner ring (4) and connected with the outer ring (5) makes possible locking of the inner ring to the outer ring.
2 An adjustable swivelling joint according to claim 1, characterized in that the inner ring (4) is provided with a circular projecting edge (7) on the outer side, and that the outer ring is provided with a groove (8) matching said edge.
3 An adjustable swivelling joint according to claim 2, characterized in that a base plate (6) is fixedly connected with the outer ring (5), the base plate (6) being arranged to prevent separation of the inner and outer rings and supporting the coupling device (10, 11).
4 An adjustable swivelling joint according to any of the preceding claims, characterized in that the inner ring (4) is provided with transverse grooves (9) arranged to cooperate with a locking means provided for the coupling device (10, 11).
5 An adjustable swivelling joint according to claim 4, characterized in that the locking means comprises a coneshaped wedge (10) connected with a spring-balanced electromagnet (11) or a hydraulically or pneumatically operated control means.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8902560A SE464143B (en) | 1989-07-18 | 1989-07-18 | ADJUSTABLE SWITCH TO AN EXCAVATOR OR LIKE |
| SE8902560-5 | 1989-07-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1991001413A1 true WO1991001413A1 (en) | 1991-02-07 |
Family
ID=20376564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/SE1990/000494 WO1991001413A1 (en) | 1989-07-18 | 1990-07-17 | Adjustable swivelling joint for an excavator or the like |
Country Status (2)
| Country | Link |
|---|---|
| SE (1) | SE464143B (en) |
| WO (1) | WO1991001413A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5829337A (en) * | 1997-08-28 | 1998-11-03 | Caterpillar Inc. | Method and apparatus for coupling a fluid-powered implement to a work machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE459018B (en) * | 1987-09-18 | 1989-05-29 | Jan Rehnman | VOLTABLE TOOL PARTS |
-
1989
- 1989-07-18 SE SE8902560A patent/SE464143B/en not_active IP Right Cessation
-
1990
- 1990-07-17 WO PCT/SE1990/000494 patent/WO1991001413A1/en unknown
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE459018B (en) * | 1987-09-18 | 1989-05-29 | Jan Rehnman | VOLTABLE TOOL PARTS |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5829337A (en) * | 1997-08-28 | 1998-11-03 | Caterpillar Inc. | Method and apparatus for coupling a fluid-powered implement to a work machine |
Also Published As
| Publication number | Publication date |
|---|---|
| SE464143B (en) | 1991-03-11 |
| SE8902560L (en) | 1991-01-19 |
| SE8902560D0 (en) | 1989-07-18 |
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