CN111853368A - Spiral duct wire rope antidetonation mounting system - Google Patents
Spiral duct wire rope antidetonation mounting system Download PDFInfo
- Publication number
- CN111853368A CN111853368A CN202010651882.3A CN202010651882A CN111853368A CN 111853368 A CN111853368 A CN 111853368A CN 202010651882 A CN202010651882 A CN 202010651882A CN 111853368 A CN111853368 A CN 111853368A
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- Prior art keywords
- air
- supporting
- sectional materials
- damping
- neodymium magnet
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
- F16L3/12—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/14—Hangers in the form of bands or chains
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/26—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets specially adapted for supporting the pipes all along their length, e.g. pipe channels or ducts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/033—Noise absorbers
- F16L55/035—Noise absorbers in the form of specially adapted hangers or supports
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a spiral duct steel wire rope anti-seismic support system, which comprises an air supply system, a suspension device and a support device, wherein the suspension device is in sling type connection with the support device through damping steel wire ropes on two sides, the suspension device comprises a thread lifting block, the damping steel wire ropes are fixedly connected on two sides of the thread lifting block, the support device comprises an annular hoop, air holes are uniformly formed in one side of the side support section and the bottom support section opposite to a spiral duct, damping air bags are connected outside the air holes, and a vibration induction block is fixedly arranged at the top of the annular hoop. Effectively prevent the distortion of tuber pipe, guaranteed the normal use in later stage.
Description
Technical Field
The invention relates to the technical field of air pipe damping supports, in particular to a spiral air pipe steel wire rope anti-seismic support system.
Background
A wind pipe side longitudinal anti-seismic support with the application number of 'CN201910643797. X' in the prior art relates to the technical field of anti-seismic supports, and comprises at least two transverse shock absorption frames, wherein two ends of one transverse shock absorption frame are connected with support frames; each two transverse shock absorption frames are connected through a connecting frame, the connecting frames are provided with two connecting frames which are respectively positioned at two ends of each transverse shock absorption frame, each transverse shock absorption frame is provided with a lateral longitudinal shock absorption piece, each lateral longitudinal shock absorption piece is positioned at the middle position of each two transverse shock absorption frames, and the lateral longitudinal shock absorption pieces are arranged along the direction vertical to the connecting frames; the damping part is indulged to the side is including the pin that slides, and the pin that slides is close to one side central point department of putting of horizontal shock attenuation frame and articulates there is the shock attenuation pole, and the other end of shock attenuation pole extends into the inside of horizontal shock attenuation frame, and damping part and vertical damping part are indulged through setting up the side to the above-mentioned device, have improved the ascending shock attenuation effect in shock absorber support all directions, have guaranteed the fixed action to the tuber pipe, have strengthened the effect of the stability after the tuber pipe installation.
But the air pipe side vertical anti-seismic bracket still has obvious defects in the using process: 1. the air pipe supports are usually arranged at uniform intervals, so that under the shaking caused by an earthquake, the shaking directions of the air pipes in the intervals of the supports are inconsistent, and the air pipes are easy to distort and deform, so that the later normal use is influenced; 2. the device can only support the air pipe under the earthquake condition to prevent the air pipe from falling, and cannot actively protect the pipe network, so that the device has a single function; 3. the air pipe of above-mentioned device and wide application on the market at present all carries out fixed connection through rigid support piece, and the air pipe easily collides with shock-absorbing support when producing the collision.
Disclosure of Invention
The invention aims to provide a spiral air duct steel wire rope anti-seismic support system to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a spiral air duct steel wire rope anti-seismic support system comprises an air supply system, a suspension device and a support device, wherein the suspension device and the support device are arranged in a one-to-one correspondence manner, the suspension device is in sling type connection with the support device through damping steel wire ropes on two sides, a hollow pipeline is arranged in the support device, and the air supply system is communicated with the hollow pipeline in the support device through an air supply pipe network;
the air supply system comprises a compressed air tank and an air supply pipe network, and the air supply pipe network is communicated with the supporting devices in sequence;
the suspension device comprises a threaded lifting block, damping steel wire ropes are fixedly connected to two sides of the threaded lifting block, the threaded lifting block is movably inserted on a lifting screw rod column, the top of the lifting screw rod column is movably mounted on a hanger through a rotating shaft, the hanger is fixedly mounted at the top of a wall body, a height adjusting bolt is fixedly mounted at the top end of the lifting screw rod column, a support seat is movably mounted at one end, away from the height adjusting bolt, of the lifting screw rod column, and a fixed neodymium magnet is arranged at the bottom of the support seat;
The supporting device comprises an annular hoop, side supporting sectional materials and bottom supporting sectional materials, wherein the side supporting sectional materials and the bottom supporting sectional materials are respectively and fixedly arranged at two sides and the bottom of the annular hoop, the thread lifting block is connected with the side supporting sectional materials at two sides through damping steel wire ropes, a channel communicated with the annular hoop is arranged inside the side supporting sectional materials and the bottom supporting sectional materials, air holes are uniformly formed in one sides of the side supporting sectional materials and the bottom supporting sectional materials, which are opposite to the spiral air pipe, the outside of each air hole is connected with a damping air bag, a vibration induction block is fixedly arranged at the top of the annular hoop, a movable neodymium magnet is movably inserted in the vibration induction block, the movable neodymium magnet and the fixed neodymium magnet are oppositely arranged at the same level, the movable neodymium magnet is connected with a piston through a connecting rod, the connecting rod is movably inserted in the fixed seat, and an extrusion spring, the extrusion spring both ends are fixed connection respectively on activity neodymium magnet and fixing base, the air flue that communicates with the air feed pipe network is seted up to vibration response piece one side, the air flue that communicates with annular staple bolt is seted up to vibration response piece bottom.
Preferably, the equal fixed mounting in three side of supporting seat has the support frame, the equal fixed mounting in wall body top of supporting seat one end is kept away from to the support frame, and is three the contained angle at support frame and wall body top is 45.
Preferably, the inner side of the annular hoop is provided with a damping washer.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the annular hoops are connected through the side supporting section bar and the bottom supporting section bar, so that the swinging directions of the air pipes are consistent when an earthquake occurs, the air pipes are effectively prevented from being distorted and deformed, and the later normal use is ensured;
2. when an earthquake occurs, the air supply system can actively supply air to the damping air bag, so that the air pipe is clamped by the air bag, and the damage and deformation of the spiral air pipe are further prevented;
3. the invention creatively uses the steel wire rope to carry out the hanging connection of the damping bracket, provides the hanging support and the damping capacity for the air pipe through the toughness and the elastic modulus of the steel wire rope, and has better support performance compared with the traditional anti-seismic bracket.
The invention carries out the suspension connection of the damping bracket through the steel wire rope, provides the suspension support and the damping capacity for the air pipe by utilizing the toughness and the elastic modulus of the steel wire rope, ensures that the swinging directions of the air pipe are consistent when an earthquake occurs, and simultaneously can actively supply air for the damping air bag through the air supply system, effectively prevents the air pipe from being distorted and deformed, and ensures the normal use in the later period.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the spiral duct mounting structure of the present invention;
FIG. 3 is a schematic view of the shock-absorbing airbag mounting structure of the present invention;
FIG. 4 is a schematic view of the vibration sensing block in a static state according to the present invention;
fig. 5 is a schematic view of the vibration sensing block in a swinging state according to the present invention.
In the figure: 1 air supply system, 2 linkage, 3 strutting arrangement, 4 shock attenuation wire rope, 5 air supply pipe networks, 6 compressed air tanks, 7 screw thread elevator, 8 shock attenuation washers, 9 lift screw pole posts, 10 hangers, 11 height-adjusting bolt, 12 supporting seats, 13 fixed neodymium magnet, 14 annular staple bolts, 15 side support section bars, 16 bottom support section bars, 17 spiral duct, 18 gas pockets, 19 shock attenuation gasbag, 20 vibration induction block, 21 activity neodymium magnet, 22 connecting rods, 23 pistons, 24 fixing bases, 25 extrusion spring, 26 support frames.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution:
a spiral air duct steel wire rope anti-seismic support system comprises an air supply system 1, a suspension device 2 and a support device 3, wherein the suspension device 2 and the support device 3 are arranged in a one-to-one correspondence manner, the suspension device 2 is connected with the support device 3 in a sling manner through damping steel wire ropes 4 on two sides, a hollow pipeline is arranged in the support device 3, and the air supply system 1 is communicated with the hollow pipeline in the support device 3 through an air supply pipe network 5;
the air supply system 1 is used for supplying air to the support device 3 under the condition that the support device is shaken, so that the damping air bag 19 is opened, the spiral air pipe 17 is fixed, and the spiral air pipe is prevented from being distorted and vibrated, the suspension device 2 is used for suspending the support device 3 through the damping steel wire rope 4, and the support device 3 is used for clamping and fixing the spiral air pipe 17;
the air supply system 1 comprises compressed air tanks 6 and an air supply pipe network 5, the air supply pipe network 5 is sequentially communicated with each supporting device 3, the air supply pipe network 5 in the embodiment is an air supply hose and can be kept connected with a vibration induction block 20 under the earthquake condition, so that the normal work of the air supply system 1 is ensured, the compressed air tanks 6 are arranged in a plurality of ways, each compressed air tank 6 is responsible for supplying air for a plurality of annular hoops 14 in an area, and the compressed air tanks 6 are arranged on the top of a wall through hangers;
The suspension device 2 comprises a threaded lifting block 7, damping steel wire ropes 4 are fixedly connected to two sides of the threaded lifting block 7, the threaded lifting block 7 is movably inserted on a lifting screw rod column 9, the top of the lifting screw rod column 9 is movably mounted on a hanger 10 through a rotating shaft, the hanger 10 is fixedly mounted at the top of a wall body, a height adjusting bolt 11 is fixedly mounted at the top end of the lifting screw rod column 9, a support seat 12 is movably mounted at one end, away from the height adjusting bolt 11, of the lifting screw rod column 9, a fixed neodymium magnet 13 is arranged at the bottom of the support seat 12, the lifting screw rod column 9 is driven to rotate through rotation of the height adjusting bolt 11, the height of the threaded lifting block 7 can be adjusted, the mounting height of the spiral air pipe 17 is adjusted, and corresponding adjustment;
the supporting device 3 comprises an annular hoop 14, side supporting sectional materials 15 and bottom supporting sectional materials 16, the side supporting sectional materials 15 and the bottom supporting sectional materials 16 are respectively and fixedly installed at two sides and at the bottom of the annular hoop 14, the thread lifting block 7 is connected with the side supporting sectional materials 15 at two sides through damping steel wire ropes 4, channels communicated with the annular hoop 14 are formed in the side supporting sectional materials 15 and the bottom supporting sectional materials 16, air holes 18 are uniformly formed in one sides, opposite to the spiral air pipes 17, of the side supporting sectional materials 15 and the bottom supporting sectional materials 16, damping air bags 19 are connected to the outer portions of the air holes 18, a vibration sensing block 20 is fixedly arranged at the top of the annular hoop 14, a movable neodymium magnet 21 is movably inserted in the vibration sensing block 20, the movable neodymium magnet 21 and the fixed neodymium magnet 13 are oppositely arranged in the same level, the movable neodymium magnet 21 is connected with a piston 23 through a connecting rod 22, an extrusion spring 25 is movably inserted outside the connecting rod 22, two ends of the extrusion spring 25 are respectively and fixedly connected to the movable neodymium magnet 21 and the fixed seat 24, an air passage communicated with the air supply pipe network 5 is formed in one side of the vibration induction block 20, and an air passage communicated with the annular hoop 14 is formed in the bottom of the vibration induction block 20.
When an earthquake occurs, the suspension device 2 connected with the top of the wall body shakes, when the shaking reaches a certain range, the movable neodymium magnet 21 and the fixed neodymium magnet 13 are not coaxially arranged oppositely, the repulsion force between the movable neodymium magnet 21 and the fixed neodymium magnet 13 is reduced, the movable neodymium magnet 21 moves upwards under the action of the extrusion spring 25, the movable neodymium magnet 21 moves upwards to drive the connecting rod 22 to move, the connecting rod 22 moves to drive the piston 23 to move, when the piston 23 moves upwards, the gas in the compressed air tank 6 enters the vibration induction block 20 through the gas supply pipe network 5, and enters the side supporting section bar 15 and the bottom supporting section bar 16 through the air passage in the annular hoop 14, finally enters the damping air bag 19 through the air hole 18, the damping air bag 19 expands to contact with the spiral air pipe 17, thereby clamping and fixing the spiral air duct 17 and preventing the spiral air duct 17 from expanding and distorting in the vibration process.
As a preferred, the equal fixed mounting in three sides of supporting seat 12 has support frame 26, and support frame 26 is kept away from the equal fixed mounting in wall body top of supporting seat 21 one end, and three support frame 26 is 45 with the contained angle at wall body top, through the setting of three support frame 26 in three direction, can guarantee to fix supporting seat 12 to prevent that supporting seat 12 breaks away from the wall body at vibration in-process.
Preferably, the damping washer 8 is arranged inside the annular hoop 14, and the annular hoop 14 is prevented from damaging the spiral air duct 17 by the damping washer 8.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a spiral duct wire rope antidetonation mounting system, includes gas supply system (1), linkage (2) and strutting arrangement (3), its characterized in that: the suspension devices (2) and the supporting devices (3) are arranged in a one-to-one corresponding mode, the suspension devices (2) are connected with the supporting devices (3) in a sling mode through damping steel wire ropes (4) on two sides, hollow pipelines are arranged in the supporting devices (3), and the gas supply system (1) is communicated with the hollow pipelines in the supporting devices (3) through a gas supply pipe network (5);
the air supply system (1) comprises a compressed air tank (6) and an air supply pipe network (5), and the air supply pipe network (5) is communicated with the supporting devices (3) in sequence;
the suspension device (2) comprises a threaded lifting block (7), damping steel wire ropes (4) are fixedly connected to two sides of the threaded lifting block (7), the threaded lifting block (7) is movably inserted into a lifting screw rod column (9), the top of the lifting screw rod column (9) is movably mounted on a hanging bracket (10) through a rotating shaft, the hanging bracket (10) is fixedly mounted at the top of a wall body, a height adjusting bolt (11) is fixedly mounted at the top end of the lifting screw rod column (9), a supporting seat (12) is movably mounted at one end, far away from the height adjusting bolt (11), of the lifting screw rod column (9), and a fixed neodymium magnet (13) is arranged at the bottom of the supporting seat (12);
The supporting device (3) comprises an annular hoop (14), side supporting sectional materials (15) and bottom supporting sectional materials (16), the side supporting sectional materials (15) and the bottom supporting sectional materials (16) are respectively and fixedly installed on two sides and the bottom of the annular hoop (14), the thread lifting block (7) is connected with the side supporting sectional materials (15) on the two sides through damping steel wire ropes (4), a channel communicated with the annular hoop (14) is formed inside the side supporting sectional materials (15) and the bottom supporting sectional materials (16), air holes (18) are uniformly formed in one sides, opposite to the spiral air pipes (17), of the side supporting sectional materials (15) and the bottom supporting sectional materials (16), damping air bags (19) are connected to the outside of the air holes (18), a vibration sensing block (20) is fixedly arranged at the top of the annular hoop (14), and a movable neodymium magnet (21) is inserted in the vibration sensing block (20), activity neodymium magnet (21) and fixed neodymium magnet (13) are relative formula setting at the same level, activity neodymium magnet (21) are connected with piston (23) through connecting rod (22), connecting rod (22) activity is inserted and is established in fixing base (24), connecting rod (22) are outer still the activity and are inserted and be equipped with extrusion spring (25), extrusion spring (25) both ends difference fixed connection is on activity neodymium magnet (21) and fixing base (24), the air flue with air feed pipe network (5) intercommunication is seted up to vibration response piece (20) one side, the air flue with annular staple bolt (14) intercommunication is seted up to vibration response piece (20) bottom.
2. A spiral duct wire rope earthquake-resistant support system according to claim 1, wherein: the equal fixed mounting in three side of supporting seat (12) has support frame (26), support frame (26) are kept away from the equal fixed mounting in wall body top of supporting seat (21) one end, and are three the contained angle at support frame (26) and wall body top is 45.
3. A spiral duct wire rope earthquake-resistant support system according to claim 1, wherein: and a damping washer (8) is arranged on the inner side of the annular hoop (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010651882.3A CN111853368B (en) | 2020-07-08 | 2020-07-08 | Spiral duct wire rope antidetonation mounting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010651882.3A CN111853368B (en) | 2020-07-08 | 2020-07-08 | Spiral duct wire rope antidetonation mounting system |
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| Publication Number | Publication Date |
|---|---|
| CN111853368A true CN111853368A (en) | 2020-10-30 |
| CN111853368B CN111853368B (en) | 2021-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010651882.3A Active CN111853368B (en) | 2020-07-08 | 2020-07-08 | Spiral duct wire rope antidetonation mounting system |
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| CN (1) | CN111853368B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112985768A (en) * | 2021-03-22 | 2021-06-18 | 广州斯派克环境仪器有限公司 | High-low temperature test device for optical system |
| CN114811268A (en) * | 2022-01-27 | 2022-07-29 | 海洋石油工程股份有限公司 | Magnetic absorption type vibration reduction hammer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0979423A (en) * | 1995-09-13 | 1997-03-25 | Shiraishi:Kk | Transport pipe crossing technique |
| CN107166095A (en) * | 2017-06-28 | 2017-09-15 | 安徽奥睿德科技发展有限公司 | A kind of multidirectional anti-rock support |
| CN208181056U (en) * | 2018-03-29 | 2018-12-04 | 李旭东 | A kind of bullet train stucco hose anticreep sling device |
| CN110332374A (en) * | 2019-07-17 | 2019-10-15 | 上海柘歆科技集团有限公司 | A kind of vertical para-seismic support in air hose side |
| CN209856514U (en) * | 2019-04-24 | 2019-12-27 | 济南汇通热力有限公司 | Pipeline antidetonation assembled supporting equipment |
| CN210372299U (en) * | 2019-08-29 | 2020-04-21 | 为家(江苏)环境集成有限公司 | Flexible integrated air pipe hanging and hoisting structure |
-
2020
- 2020-07-08 CN CN202010651882.3A patent/CN111853368B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0979423A (en) * | 1995-09-13 | 1997-03-25 | Shiraishi:Kk | Transport pipe crossing technique |
| CN107166095A (en) * | 2017-06-28 | 2017-09-15 | 安徽奥睿德科技发展有限公司 | A kind of multidirectional anti-rock support |
| CN208181056U (en) * | 2018-03-29 | 2018-12-04 | 李旭东 | A kind of bullet train stucco hose anticreep sling device |
| CN209856514U (en) * | 2019-04-24 | 2019-12-27 | 济南汇通热力有限公司 | Pipeline antidetonation assembled supporting equipment |
| CN110332374A (en) * | 2019-07-17 | 2019-10-15 | 上海柘歆科技集团有限公司 | A kind of vertical para-seismic support in air hose side |
| CN210372299U (en) * | 2019-08-29 | 2020-04-21 | 为家(江苏)环境集成有限公司 | Flexible integrated air pipe hanging and hoisting structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112985768A (en) * | 2021-03-22 | 2021-06-18 | 广州斯派克环境仪器有限公司 | High-low temperature test device for optical system |
| CN112985768B (en) * | 2021-03-22 | 2023-09-29 | 广州斯派克环境仪器有限公司 | Optical system high-low temperature test device |
| CN114811268A (en) * | 2022-01-27 | 2022-07-29 | 海洋石油工程股份有限公司 | Magnetic absorption type vibration reduction hammer |
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| CN111853368B (en) | 2021-10-01 |
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