CN206727851U - A kind of MW levels rotor end cap of power generator plate lifting device and system - Google Patents
A kind of MW levels rotor end cap of power generator plate lifting device and system Download PDFInfo
- Publication number
- CN206727851U CN206727851U CN201720055132.3U CN201720055132U CN206727851U CN 206727851 U CN206727851 U CN 206727851U CN 201720055132 U CN201720055132 U CN 201720055132U CN 206727851 U CN206727851 U CN 206727851U
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- lift arm
- active section
- lift
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- section
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Abstract
The utility model provides a kind of MW levels rotor end cap of power generator plate lifting device and system, and it includes：Upright post base, the upright post base are provided with ground connection screw；Column, the column are fixedly connected on the upright post base；Sliding shoe, the sliding shoe are arranged on the column and can slided up and down along the column；Screw lift, the screw lift are arranged on the upright post base, and its output end is connected with the sliding shoe to drive the sliding shoe to be slided up and down along the column；Folding lifting arm, the folding lifting arm lift section including lift arm slip joint, lift arm active section and lift arm.The utility model proposes MW levels rotor end cap of power generator plate lifting device and the lift arm of system can not only be slided up and down with sliding shoe along column, to realize the free degree of its in the vertical direction, it can also bend or extend in the horizontal direction, to realize its free degree in the horizontal direction.
Description
Technical field
A kind of lifting device is the utility model is related to, more specifically is said, is to be related to a kind of MW levels rotor end cap of power generator
Plate lifting device and system.
Background technology
The permanent magnet direct-drive generator of MW levels at present, its rotor endcap board size is larger, needs to use lifting device during installation
Installation site is promoted to, and is mounted on rotor dead axle.
The lift arm of existing lifting device only has the free degree on vertical direction, when rotor dead axle is sent out in the horizontal direction
After raw movement, it is necessary to carry out horizontal adjustment to the position of whole lifting device, which reduce the installation effectiveness of rotor-end cover plate.
Therefore, it is necessary to a kind of new MW level rotor end cap of power generator plate lifting devices are designed, to realize lift arm simultaneously
In the free degree vertically and horizontally.
Utility model content
The defects of in order to overcome prior art, on the one hand, the utility model provides a kind of MW levels rotor end cap of power generator plate
Lifting device, its concrete technical scheme are as follows：
A kind of MW levels rotor end cap of power generator plate lifting device, it includes：Upright post base, the upright post base are provided with and connect
Ground screw；Column, the column are fixedly connected on the upright post base；Sliding shoe, the sliding shoe are arranged on the column
It can slide up and down above and along the column；Screw lift, the screw lift are arranged on the upright post base, and it is exported
End is connected with the sliding shoe to drive the sliding shoe to be slided up and down along the column；Folding lifting arm, it is described collapsible
Lift arm lifts section including lift arm slip joint, lift arm active section and lift arm, wherein：One end of described liter of arm slip joint connects
It is connected on the sliding shoe, the other end of the lift arm slip joint is connected with one end of the lift arm active section, the act
One end that the other end of liter arm active section lifts section with the lift arm is connected, and the other end that the lift arm lifts section is used to hold
Carry MW level rotor end cap of power generator plates to be hoisted；It is free that the lift arm active section can slide horizontal around the lift arm
Rotation, and can rotate to described liter of arm slip joint and overlap up and down；It is enough around lift arm activity that the lift arm lifts energy-conservation
Horizontal rotates freely, and can rotate to described and state lift arm active section overlapping up and down.
In a specific embodiment, between the lift arm active section and the lift arm slip joint, and the lifting
Fupport arm is lifted and is rotatably connected respectively by rotary shaft realization between section and the lift arm active section.
In a specific embodiment, the lift arm active section is two-part structure, and it includes the activity of the first lift arm
Section and the second lift arm active section, pass through rotary shaft between the first lift arm active section and the second lift arm active section
Realization is rotatably connected；The second lift arm active section can rotate freely around the first lift arm activity horizontal, and
It can rotate to the first lift arm active section and overlap up and down.
In a specific embodiment, the junction of the first lift arm active section and the lift arm slip joint is provided with
First latch-up structure, first latch-up structure can realize the first lift arm active section and the lift arm slip joint
Locking or unblock；When the first lift arm active section and the locked lift arm slip joint, first lift arm is lived
Dynamic section can not slide horizontal around the lift arm and rotate freely；When the first lift arm active section and the lift arm slide
When section is unlocked, the first lift arm active section can slide horizontal around the lift arm and rotate freely.
In a specific embodiment, the junction of the second lift arm active section and the first lift arm active section
Provided with the second latch-up structure, second latch-up structure can realize the second lift arm active section and first lift arm
The locking or unblock of active section；It is described when the second lift arm active section and locked the first lift arm active section
Second lift arm active section can not rotate freely around the first lift arm activity horizontal；When the second lift arm active section
When being unlocked with the first lift arm active section, the second lift arm active section can be around the first lift arm active section
Level rotates freely.
In a specific embodiment, first latch-up structure includes：First latch-up structure includes：Static friction
Piece, it is arranged on the lower surface of the first lift arm active section, and lock cam, it is arranged on the side of the lift arm slip joint
Face, lock handle, its one end are socketed on the lock cam, and its other end is free end, the top edge of the lock handle
It is connected with the brake(-holder) block being used cooperatively with the static friction piece；When being rotated up the free end of the lock handle, the system
Moving plate is moved up and contradicted with the static friction piece, so as to realize that the first lift arm active section slides with the lift arm
The locking of section；When rotating down the free end of the lock handle, the brake(-holder) block moves down and leaves the static friction
Piece, the unblock of the first lift arm active section and the lift arm slip joint is realized so as to allow.
In a specific embodiment, the lift arm is lifted to be equipped with section lifts pad made of elastomeric material.
The utility model proposes the lift arms of MW level rotor end cap of power generator plate lifting devices can not only be with sliding shoe
Slided up and down along column, to realize the free degree of its in the vertical direction, it can also bend or extend in the horizontal direction, with
Realize its free degree in the horizontal direction.
On the other hand, the utility model provides a kind of MW levels rotor end cap of power generator plate lifting system, and it includes：Dead axle
Support tube, the torsional output device, T-shaped steering box and cross steering box of the inside of the dead axle support tube are arranged on, set
Four MW level rotor end cap of power generator plate lifting devices in the outside of the dead axle support tube；The torsional output device, institute
Stating torsional output device includes being used for the torsion output end for exporting its torsion, and the T-shaped steering box includes a torsion input
And two torsion output ends, the cross steering box include a torsion input and three torsion output ends；Wherein：It is described
The torsion output end of torsional output device connects the torsion input of the T-shaped steering box；One torsion of the T types steering box
Power output end connects a rotor-end cover plate lifting device, and another torsion output end connects the cross steering box
Torsion input；Three torsion output ends of the cross steering box each connect a rotor-end cover plate lifting dress
Put.
In a specific embodiment, a torsion output end of the T-shaped steering box, the three of the cross steering box
Individual torsion output end carries each via the connecting rod of the side wall through the dead axle support tube with the corresponding rotor-end cover plate
Rise the screw lift connection of device.
In a specific embodiment, four rotor-end cover plates lifting device is circumferentially evenly spaced in the dead axle
The outside of support tube.
MW levels rotor end cap of power generator plate lifting system provided by the utility model, it can synchronously drive four MW levels to generate electricity
Machine rotor end casing lifting device implements lifting operation, so as to significantly lift the efficiency of assembling of rotor end cap of power generator.
Brief description of the drawings
Fig. 1 is the generator of MW levels rotor end cap of power generator plate lifting device of the present utility model in a specific embodiment
Rotor-end cover plate lifting device structural representation；
Fig. 2 is the structural representation of the lift arm slip joint in Fig. 1；
Fig. 3 is the zoomed-in view in a regions in Fig. 1；
Fig. 4 is the structural representation of the static friction piece in Fig. 3；
Fig. 5 is the structural representation of the lock cam in Fig. 3；
Fig. 6 is the structural representation of the lock handle in Fig. 3；
Fig. 7 is that the structure of MW levels rotor end cap of power generator plate lifting system of the present utility model in a specific embodiment is shown
It is intended to.
Embodiment
To enable above-mentioned purpose of the present utility model, feature and advantage more obvious understandable, below by specific embodiment party
Formula is described in further detail to the utility model.
" one embodiment " or " embodiment " referred to herein refers to may be included at least one realization side of the utility model
Special characteristic, structure or characteristic in formula." in one embodiment " that different places occur in this manual not refers both to
Same embodiment, nor the single or selective embodiment mutually exclusive with other embodiment.
It refer to shown in Fig. 1 to Fig. 6, in a specific embodiment, MW levels generator amature provided by the utility model
End casing lifting device 100 includes upright post base 101, column 102, sliding shoe 103 and screw lift 104 and collapsible act
Rise arm.
Ground connection screw is equipped with the upright post base 101, can be by institute through the ground connection screw using foundation bolt
Upright post base 101 is stated to fix on the ground.The column 102 is fixedly connected on the upright post base 101.The sliding shoe
103 are arranged on the column 102 and can be slided up and down along the column 102.The screw lift 104 is arranged on described
On upright post base 101, its output end is connected with the sliding shoe 103 to drive the sliding shoe 103 along the column about 102
Slide.
The folding lifting arm includes end to end lift arm slip joint 105, lift arm active section and lifting successively
Fupport arm lifts section 108.One end of described liter of arm slip joint 105 is connected on the sliding shoe 103, the lift arm slip joint 105
The other end be connected with one end of the lift arm active section, the other end and the lift arm of the lift arm active section are lifted
One end connection of section 108, the other end that the lift arm lifts section 108 are used to carry the MW levels generator amature to be hoisted
End casing.Wherein：
The lift arm active section can rotate freely around the level of lift arm slip joint 105, and can rotate to institute
Lift arm slip joint is stated to overlap about 105；The lift arm, which lifts section 108, freely to be revolved around the lift arm activity horizontal
Turn, and can rotate to the lift arm active section and overlap up and down.
In the present embodiment, between the lift arm active section and the lift arm slip joint 105 and the lift arm is lifted
Realized and be rotatably connected by rotary shaft 109 respectively between section 108 and the lift arm active section, to realize the rotation in horizontal direction
Turn the free degree.As shown in figure 3, the rotary shaft 109 is through being connected in a pair of upper bearing (metal)s 1012 and lower bearing 1013, it is described on
Bearing 1012 and lower bearing 1013 prevent play under the in the vertical direction of rotary shaft 109.
It can be seen that the folding lifting arm of rotor end cap of power generator plate lifting device 100 provided by the utility model its not only
It can be slided up and down with the sliding shoe 103 along the column 102, to realize the free degree of its in the vertical direction.In addition,
The folding lifting arm can also bend or extend in the horizontal direction, to realize its free degree in the horizontal direction.
When the folding lifting arm fully extends, its length is equivalent to the lift arm slip joint 105, the act
Rise arm active section and the lift arm lifts the length summation of section 108.And when the folding lifting arm fully compresses, it is described
Lift arm slip joint 105 and the lift arm active section are folded on described liter of arm slip joint 105, and its length reaches minimum.
Above two state, the folding lifting arm are rendered as rectilinear form, certainly, in some other states
Under, the folding lifting arm can also show broken line shape.
During specifically used, the length of the folding lifting arm according to being actually needed, can be adjusted and its in level
Orientation on direction.
In order to further increase the free degree of the folding lifting arm in the horizontal direction, in the present embodiment, the act
It is two-part structure to rise arm active section.It includes the first lift arm active section 106, and the second lift arm active section 107.Described
Realize and be rotatably connected also by rotary shaft 109 between one lift arm active section 106 and the second lift arm active section 107,
The second lift arm active section 107 can rotate freely around the level of the first lift arm active section 106, and can rotate to
The first lift arm active section overlaps about 106.
In order to prevent the folding lifting arm from unexpected bending occurring in lifting process, when completing the collapsible act
After rising the length and its orientation adjustment in the horizontal direction of arm, it is necessary to which each composition section of the folding lifting arm is carried out
Locking.
In the present embodiment, the junction of the first lift arm active section 106 and the lift arm slip joint 105 is provided with the
One latch-up structure, first latch-up structure can realize the first lift arm active section 106 and the lift arm slip joint
105 locking or unblock.When the first lift arm active section 106 and the lift arm slip joint 105 are locked, described the
One lift arm active section 106 can not rotate freely around the level of lift arm slip joint 105；When the first lift arm active section
106 with the lift arm slip joint 105 be unlocked when, the first lift arm active section 106 can slide around the lift arm
105 levels are saved to rotate freely.
The junction of the second lift arm active section 107 and the first lift arm active section 106 is provided with the second locking
Structure, second latch-up structure can realize the second lift arm active section 107 and the first lift arm active section
106 locking or unblock.When the second lift arm active section 107 and the first lift arm active section 106 are locked,
The second lift arm active section 107 can not rotate freely around the level of the first lift arm active section 106；When the described second act
When rising arm active section 107 and being unlocked with the first lift arm active section 106, the second lift arm active section 107 can be around
The level of first lift arm active section 106 rotates freely.
Because first latch-up structure is identical with the structure and operation principle of second latch-up structure, therefore,
Only first latch-up structure is introduced for this specification：
It refer to shown in Fig. 3, first latch-up structure includes：Static friction piece 1010, it is arranged on first lifting
The lower surface of arm active section 106, lock cam 1014, it is arranged on the side of the lift arm slip joint 105, lock handle
1015, its one end is socketed on the lock cam 1014, and its other end is free end, the top edge of the lock handle 1015
It is connected with the brake(-holder) block 1011 being used cooperatively with the static friction piece 1010.
When being rotated up the free end of the lock handle 1015, the brake(-holder) block 1011 move up and with it is described quiet
Friction plate 1010 contradicts, so as to realize the locking of the first lift arm active section 106 and the lift arm slip joint 105.
When rotating down the free end of the lock handle 1015, the brake(-holder) block 1011 is moved down and left described
Static friction piece 1010, the unblock of the first lift arm active section 106 and the lift arm slip joint 105 is realized so as to allow.
Section 108 is lifted with the lift arm produce rigid knock for the MW level rotor end cap of power generator plates for preventing from being lifted
Touch, slid also for preventing that MW level rotor end cap of power generator plates from lifting from the lift arm on section 108.It is described in the present embodiment
Lift arm, which is lifted to be equipped with made of soft rubber material on section 108, lifts pad 1016.
On the other hand, this implementation is new additionally provides a kind of MW levels rotor end cap of power generator plate lifting system.
It refer to shown in Fig. 7, in a specific embodiment, the rotor end cap of power generator plate lifting system includes：It is fixed
Axle support tube 200, it is arranged on the torsional output device 300, T-shaped steering box 400 and cross of the inside of the dead axle support tube 200
Shape steering box 500, circumferentially it is arranged in the MW levels rotor end cap of power generator plate lifting of the outside of the dead axle support tube 200
Device 100.
Engine is provided with the torsional output device 300, it is used to provide driving torsion output.
The torsional output device 300 includes being used for the torsion output end for exporting its torsion, and the T-shaped steering box 400 wraps
A torsion input and two torsion output ends are included, the cross steering box 500 includes a torsion input and three
Torsion output end.
The torsion output end of the torsional output device 300 connects the torsion input of the T-shaped steering box 400；The T
One torsion output end of type steering box 400 connects a rotor-end cover plate lifting device 100, another torsion output end
Connect the torsion input of the cross steering box 500；Three torsion output ends of the cross steering box 500 connect respectively
Connect a rotor-end cover plate lifting device 100.
In the present embodiment, four through holes are equipped with the side wall of the dead axle support tube 200, are interspersed with each through hole
A piece connecting rod.
One torsion output end of the T-shaped steering box 400, three torsions of the cross steering box 500
Power output end is connected by a connecting rod with the screw lift 104 of the corresponding rotor-end cover plate lifting device 100 respectively
Connect, to drive the screw lift 104 to work, finally four rotor-end cover plate lifting devices 100 of driving is collapsible
Lift arm is moved up and down, and respective function is lifted to realize.
The dead axle support tube 200 is bottomless tubular structure, and it is placed on level land, for supporting rotor dead axle.It is described
It is described fixed that torsional output device 300, the T-shaped steering box 400 and cross steering box 500 are fixed on by foundation bolt
On the internal ground of axle support tube 200, four rotor-end cover plate lifting devices 100 are fixed on described by foundation bolt
On the outside ground of dead axle support tube 200.
The MW levels rotor end cap of power generator plate lifting system, it can synchronously drive four MW level rotor end cap of power generator plates
Lifting device implements lifting end casing operation, and end casing is attached on rotor dead axle.Turn so as to significantly lift generator
The efficiency of assembling of sub- end cap.
Described above fully discloses specific embodiment of the present utility model.It is pointed out that it is familiar with the neck
Any change that the technical staff in domain is done to specific embodiment of the present utility model is all without departing from right of the present utility model
The scope of claim.Correspondingly, the scope of claim of the present utility model is also not limited only to foregoing specific embodiment party
Formula.
Claims (10)
1. a kind of MW levels rotor end cap of power generator plate lifting device, it includes：
Upright post base, the upright post base are provided with ground connection screw；
Column, the column are fixedly connected on the upright post base；
Sliding shoe, the sliding shoe are arranged on the column and can slided up and down along the column；
Screw lift, the screw lift are arranged on the upright post base, its output end be connected with the sliding shoe with
The sliding shoe is driven to be slided up and down along the column；
Folding lifting arm, the folding lifting arm lift section including lift arm slip joint, lift arm active section and lift arm,
Wherein：
One end of described liter of arm slip joint is connected on the sliding shoe, the other end and the lifting of the lift arm slip joint
One end connection of arm active section, one end that the other end of the lift arm active section lifts section with the lift arm is connected, described
The other end that lift arm lifts section is used to carry MW level rotor end cap of power generator plates to be hoisted；
The lift arm active section can slide horizontal around the lift arm and rotate freely, and can rotate to described liter of arm and slide
Dynamic section overlaps up and down；The lift arm lifts that energy-conservation is enough to be rotated freely around the lift arm activity horizontal, and can rotate extremely with
The lift arm active section of stating overlaps up and down.
2. MW levels rotor end cap of power generator plate lifting device as claimed in claim 1, it is characterised in that：
Between the lift arm active section and the lift arm slip joint, and the lift arm lifts section and lift arm activity
Realized and be rotatably connected by rotary shaft respectively between section.
3. MW levels rotor end cap of power generator plate lifting device as claimed in claim 2, it is characterised in that：
The lift arm active section is two-part structure, and it includes the first lift arm active section and the second lift arm active section, institute
State and be rotatably connected between the first lift arm active section and the second lift arm active section by rotary shaft realization；
The second lift arm active section can rotate freely around the first lift arm activity horizontal, and can rotate to institute
The first lift arm active section is stated to overlap up and down.
4. MW levels rotor end cap of power generator plate lifting device as claimed in claim 3, it is characterised in that：
The junction of the first lift arm active section and the lift arm slip joint is provided with the first latch-up structure, first lock
The locking or unblock of the first lift arm active section and the lift arm slip joint can be realized by determining structure；
When the first lift arm active section and the locked lift arm slip joint, the first lift arm active section can not
Horizontal is slided around the lift arm to rotate freely；
When the first lift arm active section and the lift arm slip joint are unlocked, the first lift arm active section can
Horizontal is slided around the lift arm to rotate freely.
5. MW levels rotor end cap of power generator plate lifting device as claimed in claim 4, it is characterised in that：
The junction of the second lift arm active section and the first lift arm active section is provided with the second latch-up structure, and described the
Two latch-up structures can realize the locking or unblock of the second lift arm active section and the first lift arm active section；
When the second lift arm active section and locked the first lift arm active section, the second lift arm active section
It can not be rotated freely around the first lift arm activity horizontal；
When the second lift arm active section and the first lift arm active section are unlocked, the second lift arm active section
It can be rotated freely around the first lift arm activity horizontal.
6. MW levels rotor end cap of power generator plate lifting device as claimed in claim 4, it is characterised in that first locking knot
Structure includes：
Static friction piece, it is arranged on the lower surface of the first lift arm active section,
Lock cam, it is arranged on the side of the lift arm slip joint,
Lock handle, its one end are socketed on the lock cam, and its other end is free end, the top edge of the lock handle
It is connected with the brake(-holder) block being used cooperatively with the static friction piece；
When being rotated up the free end of the lock handle, the brake(-holder) block is moved up and contradicted with the static friction piece,
So as to realize the locking of the first lift arm active section and the lift arm slip joint；
When rotating down the free end of the lock handle, the brake(-holder) block moves down and leaves the static friction piece, from
And allow the unblock for realizing the first lift arm active section and the lift arm slip joint.
7. MW levels rotor end cap of power generator plate lifting device as claimed in claim 1, it is characterised in that：The lift arm is lifted
It is equipped with section and pad is lifted made of elastomeric material.
A kind of 8. MW levels rotor end cap of power generator plate lifting system, it is characterised in that：It includes：
Dead axle support tube, the torsional output device, T-shaped steering box and cross for being arranged on the inside of the dead axle support tube turn to
Case, it is arranged on four MW level generator amatures ends as described in any one of claim 1 to 7 of the outside of the dead axle support tube
Cover plate lifting device；
The torsional output device, the torsional output device include being used for exporting the torsion output end of its torsion, described T-shaped turn
Include a torsion input and two torsion output ends to case, the cross steering box includes a torsion input and three
Individual torsion output end；Wherein：
The torsion output end of the torsional output device connects the torsion input of the T-shaped steering box；The T-shaped steering box
One torsion output end connects a rotor-end cover plate lifting device, and another torsion output end connects the cross and turned
To the torsion input of case；Three torsion output ends of the cross steering box each connect a rotor-end cover plate and carried
Rise device.
9. MW levels rotor end cap of power generator plate lifting system as claimed in claim 8, it is characterised in that：
One torsion output end of the T-shaped steering box, three torsion output ends of the cross steering box are each via passing through
Wear the connecting rod of the side wall of the dead axle support tube and the screw lift of the corresponding rotor-end cover plate lifting device
Connection.
10. MW levels rotor end cap of power generator plate lifting system as claimed in claim 8, it is characterised in that four rotors
End casing lifting device is circumferentially evenly spaced in the outside of the dead axle support tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720055132.3U CN206727851U (en) | 2017-01-18 | 2017-01-18 | A kind of MW levels rotor end cap of power generator plate lifting device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720055132.3U CN206727851U (en) | 2017-01-18 | 2017-01-18 | A kind of MW levels rotor end cap of power generator plate lifting device and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206727851U true CN206727851U (en) | 2017-12-08 |
Family
ID=60499380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720055132.3U Withdrawn - After Issue CN206727851U (en) | 2017-01-18 | 2017-01-18 | A kind of MW levels rotor end cap of power generator plate lifting device and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206727851U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787531A (en) * | 2017-01-18 | 2017-05-31 | 江苏中车电机有限公司 | A kind of MW grades of rotor end cap of power generator plate lifting device and system |
-
2017
- 2017-01-18 CN CN201720055132.3U patent/CN206727851U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787531A (en) * | 2017-01-18 | 2017-05-31 | 江苏中车电机有限公司 | A kind of MW grades of rotor end cap of power generator plate lifting device and system |
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Legal Events
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 224100 Jinhai Road 111, Dafeng Economic Development Zone, Yancheng City, Jiangsu Patentee after: JIANGSU CRRC ELECTRIC Co.,Ltd. Address before: 224100 Jinhai Road, Yancheng City Economic Development Zone, Jiangsu 111 Patentee before: JIANGSU CRRC ELECTRIC Co.,Ltd. |
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| CP02 | Change in the address of a patent holder | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171208 Effective date of abandoning: 20230714 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20171208 Effective date of abandoning: 20230714 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |