CN111213563B - Power transmission line tree obstacle clearing and rope tying tool and method - Google Patents
Power transmission line tree obstacle clearing and rope tying tool and method Download PDFInfo
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- CN111213563B CN111213563B CN202010102677.1A CN202010102677A CN111213563B CN 111213563 B CN111213563 B CN 111213563B CN 202010102677 A CN202010102677 A CN 202010102677A CN 111213563 B CN111213563 B CN 111213563B
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- ring
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 230000003044 adaptive effect Effects 0.000 claims description 2
- 230000009194 climbing Effects 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 3
- 230000013011 mating Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G23/00—Forestry
- A01G23/02—Transplanting, uprooting, felling or delimbing trees
- A01G23/099—Auxiliary devices, e.g. felling wedges
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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Forests & Forestry (AREA)
- Environmental Sciences (AREA)
- Emergency Lowering Means (AREA)
- Catching Or Destruction (AREA)
Abstract
The invention relates to a tool and a method for cleaning a rope on a power transmission line tree obstacle, wherein the tool comprises a movable buckle, the movable buckle is arranged at one end of a supporting rod through an open loop locking ring device, the movable buckle comprises a left clamping ring, a right clamping ring and a combination part, one ends of the bottoms of the left clamping ring and the right clamping ring are meshed with each other and are arranged in the combination part, the open loop locking ring device of the left clamping ring is movably arranged at the bottom end of the combination part, the other ends of the bottoms of the left clamping ring and the right clamping ring are mutually locked at a certain position through the open loop locking ring device, and the left clamping ring and the right clamping ring which are mutually locked are unlocked through the open loop locking ring device. The invention can well overcome the defects of high risk, long time consumption, high personnel quality and skill requirements and the like of climbing trees in the existing tree obstacle clearing work, effectively reduces the safety risk of overhead work in the tree obstacle clearing work, and enhances the flexibility and applicability of the work.
Description
Technical Field
The invention relates to a tool, in particular to a power transmission line tree obstacle clearing and rope tying tool, and also relates to a method, belonging to the field of power operation and maintenance tools.
Background
In operation and maintenance work of a power transmission network, the situation that the tree is required to be controlled to fall down in the hidden trouble clearing operation of the tree obstacle is very many, such as the situation that injures personnel, houses, wires and the like. The current situation is mainly to fix the ropes by manually climbing the tree, a certain high falling risk exists, and the large-area treatment cannot be realized due to limited physical strength of personnel. The bucket arm vehicle is matched for operation, so that the bucket arm vehicle is limited by terrain and cannot be widely used.
Therefore, the rope tying work can be completed on the ground for tree obstacle cleaning work, the defects of high tree climbing risk, long time consumption, high personnel quality and skill requirements and the like in the existing tree obstacle cleaning work can be overcome, the safety risk of overhead operation in the tree obstacle cleaning work is effectively reduced, the flexibility and the applicability of the operation are enhanced, and the application range of the auxiliary tool for the limited tree obstacle cleaning operation is expanded.
However, when the tool is placed at a high place, how to lock and unlock conveniently and quickly is also a problem which needs to be solved at present.
Disclosure of Invention
In order to solve the problems, the invention provides a power transmission line tree obstacle clearing and rope tying tool and a method, which are used for controlling tree guidance by a rope tying traction rope in power transmission line channel tree obstacle clearing work. The technical scheme of the invention is as follows:
the utility model provides a transmission line tree obstacle clearance is tied rope instrument, includes movable buckle, and movable buckle locates vaulting pole one end through open-loop catch device, and movable buckle includes left snap ring, right snap ring and joint portion, and left snap ring and right snap ring bottom one end intermeshing locates in the joint portion, and left snap ring open-loop catch device activity locates the joint portion bottom, and left snap ring and right snap ring bottom other end are locked each other in a certain position through open-loop catch device, and left snap ring and right snap ring of mutual locking still pass through open-loop catch device unblock.
Further, one end of the movable buckle is provided with a traction rope ring.
Further, the left snap ring comprises a left ring body, at least one part of the bottom of the left ring body is in a meshing gear shape, the top of the left ring body is provided with a locking assembly, the locking assembly comprises a locking frame and movable pressing teeth arranged in the locking frame, one end of each movable pressing tooth is rotatably arranged on the locking frame, and the other end of each movable pressing tooth is connected with the locking frame through a spring.
Further, the right snap ring comprises a right ring body, at least one part of the bottom of the right ring body is in a meshing gear shape and is meshed with the bottom of the left snap ring, locking teeth are arranged on the top of the right ring body, and a through hole connected with the open loop locking ring device is formed in the right ring body.
Further, the open-loop locking ring device comprises a fixing part connected with the supporting rod, a connecting column is arranged on the fixing part, the connecting column is arranged at the bottom of the combining part, an unlocking ring which is adaptive to the shape of the left clamping ring or the right clamping ring is arranged on the connecting column, the unlocking ring is arranged below the right clamping ring, rotates along with the connecting column and is shorter than the right clamping ring, and an unlocking piece or an locking piece is movably arranged at the top end of the unlocking ring.
Further, the movable pressing teeth comprise locking teeth matched teeth, an unlocking piece contact beam is arranged at one end of each locking teeth matched tooth, the height of the unlocking piece contact beam is higher than that of each locking teeth matched tooth, and the unlocking piece enters the locking frame to enable the left clamping ring and the right clamping ring to be unlocked by pressing the movable pressing teeth.
Further, the locking piece of the open-loop locking ring device comprises a connecting bottom and a positioning column arranged on the connecting bottom, the connecting bottom is connected with the unlocking ring, and the positioning column is inserted into the through hole of the right clamping ring to drive the right clamping ring to rotate.
Further, the unlocking piece is in a sickle shape, and can extend into the locking frame from the lower part of the right clamping ring under the locking state of the right clamping ring to press the movable pressing teeth.
The invention also relates to a method for cleaning the tree obstacle of the power transmission line, which is carried out by using the tool as follows:
the connecting rod is sleeved with the connecting part, the positioning column is placed into the through hole, the open-loop locking ring device is fixed on the supporting rod, and the assembled tool is opened to be in an open state.
The stay bar is held tightly, so that the open-loop locking ring device cannot rotate freely, an assembled tool is conveyed to a trunk position with proper height by the stay bar, the trunk is wrapped by a ring formed by the left clamping ring and the right clamping ring, the stay bar is held tightly on the ground, the stay bar is prevented from rotating, a rope which is obliquely tied on a traction rope ring by a rope pulling person is enabled to enable the rope direction to be close to one side of the left clamping ring, the left clamping ring and the right clamping ring of the component to be locked by the hard pulling rope, and then the stay bar is taken down.
If the locking part is considered to be improper, when the movable clamping ring is taken down at a high position, the locking piece is replaced by the unlocking piece, the open-loop locking ring device is inserted into the movable clamping ring locked on the trunk, a ground rope pulling sub-person brings the rope to rotate the supporting rod, the front end of the unlocking piece is inserted into the locking frame from the lower end of the right clamping ring, and the movable pressing teeth are pressed, so that the trunk can be unlocked.
Compared with the prior art, the invention has the following beneficial effects:
(1) The invention can well overcome the defects of high risk, long time consumption, high personnel quality and skill requirements and the like of climbing trees in the existing tree obstacle cleaning work, effectively reduces the safety risk of overhead work in the tree obstacle cleaning work, enhances the flexibility and applicability of the work, and can be used as an auxiliary tool for the limited tree obstacle cleaning work.
(2) The invention has ingenious design, the locking and unlocking are carried out through the movably connected open-loop locking ring device, wherein the locking action is completed by supporting the open-loop locking ring device to the corresponding position through the supporting rod and pulling the traction rope, the unlocking action is completed by extending into the locking frame through the open-loop locking ring device, the maintainer does not need to climb up the tree by personal skills and physical strength to carry out the work of bolting the traction rope, the movable buckle can be sent to the reasonable position of the trunk by the supporting rod on the ground to lock the trunk, the supporting rod is taken down, and meanwhile, the tree is pulled out of the dumping range of the tree to guide.
Drawings
FIG. 1 is a top view of the present invention in a locked and condition;
FIG. 2 is a front view of the present invention in an unlocked condition;
FIG. 3 is a top view of the present invention in an unlocked condition;
FIG. 4 is a schematic view of the closure assembly of the present invention;
FIG. 5 is a schematic view of the structure of the movable tooth pressing device of the present invention;
fig. 6 is a top view of the open loop lock ring device of the present invention with the locking member.
Detailed Description
The technical solutions of the present embodiment will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is apparent that the described embodiment is only a part of examples of the present invention, not all examples. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the power transmission line tree obstacle clearing and rope tying tool of the embodiment comprises a movable buckle, wherein the movable buckle is arranged at one end of a stay bar 7 through an open loop locking ring device 3, as shown in fig. 2 and 3; the movable buckle comprises a left clamping ring 2, a right clamping ring 1 and a combining part 6, wherein one ends of the bottoms of the left clamping ring 2 and the right clamping ring 1 are meshed with each other, the middle parts of the bottoms of the left clamping ring 2 and the right clamping ring 1 can be provided with bolt holes, the middle parts of the bottoms of the left clamping ring 2 and the right clamping ring 1 are arranged in the combining part 6 through bolts 5, the open-loop clamping ring device 3 is movably arranged at the bottom end of the combining part 6 and can be sleeved, and the rotation of the left clamping ring 2 and the right clamping ring 1 is not influenced during insertion. The other ends of the bottoms of the left clamping ring 2 and the right clamping ring 1 are mutually locked when the branches are clamped through an open loop locking ring device 3, as shown in figure 1. One end of the movable buckle is provided with a traction rope ring 4.
As shown in fig. 2 and 3, the left snap ring 2 includes a left ring body 2.1, at least a part of the bottom of the left ring body 2.1 is in a gear shape, a locking assembly is arranged at the top of the left ring body, the locking assembly includes a locking frame 2.2 and a movable pressing tooth 2.4 arranged in the locking frame 2.2, one end of the movable pressing tooth 2.4 is rotatably arranged on the locking frame 2.1 through a bolt 2.3, and the other end is connected with the locking frame 2.2 through a spring 2.5, as shown in fig. 4. The spring 2.5 is arranged at the back of the movable pressing tooth 2.4 to prevent the movable pressing tooth 2.4 from loosening backwards after locking and the locking is invalid.
The right clamping ring 1 comprises a right ring body 1.1, at least one part of the bottom of the right ring body 1.1 is in a meshing gear shape and is meshed with the bottom of the left clamping ring, the top of the right clamping ring is provided with locking teeth 1.3, and the right ring body 1.1 is provided with a through hole 1.2 connected with an open-loop locking ring device 3.
As shown in fig. 2, 3 and 6, the open-loop locking ring device 3 includes a fixing portion 3.5 connected with a supporting rod 7, the fixing portion 3.5 is connected with the fixing portion by a bolt 3.6, a connecting column 3.4 is arranged on the fixing portion 3.5, a part of the connecting column can be conical, the connecting column 3.4 is sleeved at the bottom of the connecting portion 6, an unlocking ring 3.1 which is adapted to the shape of the left clamping ring 2 or the right clamping ring 1 is arranged on the connecting column 3.4, the unlocking ring 3.1 is arranged below the right clamping ring 1, rotates along with the connecting column 3.4 and is shorter than the right clamping ring 1, and an unlocking member 3.2 or an locking member 3.3 is detachably arranged at the top end of the unlocking ring 3.1 by the bolt.
As shown in fig. 5, the movable pressing teeth 2.4 include locking teeth mating teeth 2.41, one end of the locking teeth mating teeth 2.41 is provided with an unlocking member contact beam 2.42, the height of the unlocking member contact beam 2.42 is higher than that of the locking teeth mating teeth 2.41, the bottom end of the movable pressing teeth 2.4 is provided with holes 2.43, so that the movable pressing teeth are convenient to rotationally connect with the locking frame 2.2, when the locking is performed, the unlocking member 3.2 enters the locking frame 2.2, and the unlocking member contact beam 2.42 of the movable pressing teeth 2.4 is pressed (the unlocking member contact beam 2.42 is lifted), so that the left clamping ring 2 and the right clamping ring 1 are unlocked, as shown in fig. 2.
As shown in fig. 6, the locking piece 3.3 of the open loop locking ring device 3 includes a connection bottom and a positioning column 3.31 arranged on the connection bottom, the connection bottom is connected with the unlocking ring 3.1, the positioning column 3.31 is inserted into the through hole 1.2 of the right clamping ring 1 to drive the right clamping ring 1.2 to rotate, and finally is locked in the locking assembly, as shown in fig. 2.
As shown in fig. 3, the unlocking member 3.2 is in a sickle shape, and can extend into the locking frame 2.2 from the lower part of the right clamping ring 1 in the right clamping ring locking state to press the movable pressing teeth 2.4.
The movable buckle is used for locking the trunk, and when the movable buckle is used, the combining part 6 is sleeved on the connecting column 3.4, meanwhile, the positioning column 3.31 is placed in the through hole 1.2, the open-loop locking ring device 3 is fixed on the supporting rod 7, and the assembled tool is opened to be in an open state.
When personnel hold the stay bar 7, make the open loop catch device 3 can not free rotation, send the trunk position of suitable height with the instrument that the stay bar 7 will assemble, wrap up the trunk with the ring that left side snap ring 2, right side snap ring 1 formed, ground hold the stay bar 7, prevent that stay bar 7 from rotating, guy rope that guy rope personnel draws to one side of drawing rope ring 4 (draw to being close to left side snap ring direction) to one side, make rope direction be close to left side snap ring 2, the stay cord of exerting oneself, make part left side snap ring 2, right side snap ring 1, because left side snap ring 2, right side snap ring 1 meshing, right side snap ring 1 is fixed by reference column 3.31, when the rope is to leaning on this side of left side snap ring 2, right side snap ring 1 combination is rotated to connecting column 3.4 as the center, lead to left side snap ring 2, right side snap ring 1 is close to, the lock, then take down the stay bar 7.
If the locking part is considered to be improper, when the movable clamping ring is to be taken down at a high position, the locking piece 3.3 is replaced by the unlocking piece 3.2, the open-loop locking ring device 3 is inserted into the movable clamping ring locked on the trunk, a ground rope pulling child brings a rope, the stay bar 7 is rotated, the front end of the unlocking piece 3.2 is inserted into the locking frame 2.2 from the lower end of the right clamping ring 1, and the movable pressing tooth 2.4 is pressed, so that the trunk can be unlocked.
When the tree is cut down by personnel on the ground, the tool is fallen down on the ground along with the trunk, the lock catch can be downwards pressed manually to move the movable pressing teeth 2.4, and the tree can be unlocked.
The diameter of the stay bar 7 of the embodiment is 36.5mm, and the stay bar is totally divided into four sections, each section is 1.5 m long, and the total length of the four sections after assembly can reach 6 m. According to the different heights of the tree poles, the lengths (1.5 meters, 3 meters, 4.5 meters and 6 meters) of the support poles can be selectively assembled in use. The sections of the supporting rod are assembled by adopting a screw rod and screw sleeve connection mode respectively.
When the tree obstacle is cleaned, the movable clamping ring is clamped on the tree trunk, and the pulling rope is manually controlled to enable the tree trunk to be stressed, so that the tree trunk is inclined towards the control direction.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (6)
1. The utility model provides a transmission line tree obstacle clearance is tied instrument which characterized in that: the movable buckle is arranged at one end of the supporting rod through an open-loop locking ring device, the movable buckle comprises a left clamping ring, a right clamping ring and a combination part, one ends of the bottoms of the left clamping ring and the right clamping ring are meshed with each other and are arranged in the combination part, the open-loop locking ring device of the left clamping ring is movably arranged at the bottom end of the combination part, the other ends of the bottoms of the left clamping ring and the right clamping ring are mutually locked at a certain position through the open-loop locking ring device, and the left clamping ring and the right clamping ring which are mutually locked are unlocked through the open-loop locking ring device;
one end of the movable buckle is provided with a traction rope ring;
the left snap ring comprises a left ring body, at least one part of the bottom of the left ring body is in a meshing gear shape, the top of the left ring body is provided with a locking assembly, the locking assembly comprises a locking frame and movable pressing teeth arranged in the locking frame, one end of each movable pressing tooth is rotatably arranged on the locking frame, and the other end of each movable pressing tooth is connected with the locking frame through a spring;
the open-loop locking ring device comprises a fixing part connected with the supporting rod, a connecting column is arranged on the fixing part, the connecting column is arranged at the bottom of the combining part, an unlocking ring which is adaptive to the shape of the left clamping ring or the right clamping ring is arranged on the connecting column, the unlocking ring is arranged below the right clamping ring and rotates along with the connecting column and is shorter than the right clamping ring, and an unlocking piece or an locking piece is movably arranged at the top end of the unlocking ring.
2. The transmission line tree obstacle clearing tether tool of claim 1, wherein: the right clamping ring comprises a right ring body, at least one part of the bottom of the right ring body is in a meshing gear shape and is meshed with the bottom of the left clamping ring, locking teeth are arranged at the top of the right ring body, and a through hole connected with the open-loop locking ring device is formed in the right ring body.
3. The transmission line tree obstacle clearing tether tool of claim 1, wherein: the movable pressing teeth comprise locking teeth matched teeth, an unlocking piece contact beam is arranged at one end of each locking teeth matched tooth, the height of the unlocking piece contact beam is higher than that of each locking teeth matched teeth, and the unlocking piece enters the locking frame to enable the left clamping ring and the right clamping ring to be unlocked by pressing the movable pressing teeth.
4. The transmission line tree obstacle clearing tether tool of claim 1, wherein: the locking piece of open-loop catch device is including connecting the bottom and locating the reference column on locating the connection bottom, and the connection bottom is connected with unblanking the unblock ring, and the reference column inserts in the through-hole of right snap ring, drives right snap ring rotation.
5. The transmission line tree obstacle clearing tether tool of claim 1, wherein: the unlocking piece is in a sickle shape, and can extend into the locking frame from the lower part of the right clamping ring under the locking state of the right clamping ring to press the movable pressing teeth.
6. A power transmission line tree obstacle cleaning method is characterized in that: use of the transmission line tree obstacle clearing tether tool of one of claims 1 to 5 as follows:
sleeving the connecting column with the combining part, putting the positioning column into the through hole, fixing the open-loop locking ring device on the supporting rod, and opening the assembled tool to be in an open state;
the stay bar is held tightly, so that the open loop locking ring device cannot rotate freely, an assembled tool is sent to a trunk position with proper height by the stay bar, the trunk is wrapped by a ring formed by a left clamping ring and a right clamping ring, the stay bar is held tightly on the ground, the stay bar is prevented from rotating, a rope tied on a traction rope ring in a diagonal manner by a rope pulling person is enabled to be close to one side of the left clamping ring, the rope pulling is forcefully used, the left clamping ring and the right clamping ring of the component are locked, and then the stay bar is taken down;
if the locking part is considered to be improper, when the movable clamping ring is taken down at a high position, the locking piece is replaced by the unlocking piece, the open-loop locking ring device is inserted into the movable clamping ring locked on the trunk, a ground rope pulling sub-person brings the rope to rotate the supporting rod, the front end of the unlocking piece is inserted into the locking frame from the lower end of the right clamping ring, and the movable pressing teeth are pressed, so that the trunk can be unlocked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010102677.1A CN111213563B (en) | 2020-02-19 | 2020-02-19 | Power transmission line tree obstacle clearing and rope tying tool and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010102677.1A CN111213563B (en) | 2020-02-19 | 2020-02-19 | Power transmission line tree obstacle clearing and rope tying tool and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111213563A CN111213563A (en) | 2020-06-02 |
| CN111213563B true CN111213563B (en) | 2024-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010102677.1A Active CN111213563B (en) | 2020-02-19 | 2020-02-19 | Power transmission line tree obstacle clearing and rope tying tool and method |
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| CN (1) | CN111213563B (en) |
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| GB1048502A (en) * | 1963-07-10 | 1966-11-16 | Christian Leo Longert | Apparatus for the mechanical treatment of standing trees |
| EP1792535A1 (en) * | 2005-12-01 | 2007-06-06 | Clemens Gupper | Device for felling trees |
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| CN206118641U (en) * | 2016-11-02 | 2017-04-26 | 国家电网公司 | Instrument is binded to supplementary rope of portable direction |
| CN206181973U (en) * | 2016-11-01 | 2017-05-24 | 贵州电网有限责任公司都匀供电局 | Downtree directional control device |
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| CN209806670U (en) * | 2018-12-29 | 2019-12-20 | 云南电网有限责任公司曲靖供电局 | Felling inversion control device |
| CN212393454U (en) * | 2020-02-19 | 2021-01-26 | 云南电网有限责任公司楚雄供电局 | Transmission line tree obstacle clearance stay rope instrument |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2810188A1 (en) * | 2010-03-11 | 2011-09-15 | Partners In Innovation Limited, Llc | Multi-functional and modular tree removal and maintenance apparatus and related methods |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1048502A (en) * | 1963-07-10 | 1966-11-16 | Christian Leo Longert | Apparatus for the mechanical treatment of standing trees |
| EP1792535A1 (en) * | 2005-12-01 | 2007-06-06 | Clemens Gupper | Device for felling trees |
| CN104957001A (en) * | 2015-06-30 | 2015-10-07 | 国网山东省电力公司济南供电公司 | Special tool used for pulling out latterly-planted trees |
| CN106305340A (en) * | 2015-07-06 | 2017-01-11 | 国网山东省电力公司潍坊供电公司 | Safe positioning device for rapid tree felling in power lines |
| CN206181973U (en) * | 2016-11-01 | 2017-05-24 | 贵州电网有限责任公司都匀供电局 | Downtree directional control device |
| CN206118641U (en) * | 2016-11-02 | 2017-04-26 | 国家电网公司 | Instrument is binded to supplementary rope of portable direction |
| CN208445207U (en) * | 2018-08-10 | 2019-01-29 | 广东电网有限责任公司 | A kind of tree barrier cleaning tool and Portable tool case |
| CN209314485U (en) * | 2018-12-13 | 2019-08-30 | 广西电网有限责任公司河池大化供电局 | One kind, which chops at a tree, flies set device |
| CN209806670U (en) * | 2018-12-29 | 2019-12-20 | 云南电网有限责任公司曲靖供电局 | Felling inversion control device |
| CN110447502A (en) * | 2019-09-19 | 2019-11-15 | 广东电网有限责任公司 | One kind tying up tree device |
| CN212393454U (en) * | 2020-02-19 | 2021-01-26 | 云南电网有限责任公司楚雄供电局 | Transmission line tree obstacle clearance stay rope instrument |
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| CN111213563A (en) | 2020-06-02 |
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