CN108801628A - A kind of shaft coupling manufacture rack running-in equipment - Google Patents
A kind of shaft coupling manufacture rack running-in equipment Download PDFInfo
- Publication number
- CN108801628A CN108801628A CN201810610021.3A CN201810610021A CN108801628A CN 108801628 A CN108801628 A CN 108801628A CN 201810610021 A CN201810610021 A CN 201810610021A CN 108801628 A CN108801628 A CN 108801628A
- Authority
- CN
- China
- Prior art keywords
- shaft coupling
- shaft
- measured
- detection motor
- connecting shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation
Abstract
The present invention relates to technical field of bearing processing, specially a kind of shaft coupling manufacture rack running-in equipment can preferably weaken the detection motor seismism generated when detection motor drives shaft coupling to be measured to rotate, to avoid detection motor impaired.Technical points include detection motor, positioned at the shaft coupling to be measured of detection motor output end, shaft coupling one end to be measured is connect by a universal shaft with the output end of detection motor, the other end is rotatablely connected with tail fixed plate, universal shaft is connect by a connecting shaft with shaft coupling to be measured, connecting shaft rotation is set in a support plate, and connecting shaft and the output shaft of detection motor are coaxially disposed, and along its own axial rotation.When detection, shaft coupling to be measured shakes, which is transmitted to connecting shaft first, is weakened for the first time；Later, which is transmitted to universal shaft, and the deflection of universal shaft makes the vibrations for being transmitted to detection motor weaken again, to which the vibrations for being eventually transferred to detection motor are very small, is protected to the full extent to detection motor.
Description
Technical field
The present invention relates to technical field of bearing processing, specially a kind of shaft coupling manufacture rack running-in equipment.
Background technology
With the development of the society, the raising of scientific and technological level, the application of shaft coupling in the industry is more and more extensive.Shaft coupling exists
It is required for being debugged and being detected by rack run-in test after the completion of assembly, to judge whether it is qualified.
Existing shaft coupling is usually directly to connect shaft coupling to be detected with detection motor when being detected, passes through electricity
Machine rotation drives shaft coupling rotation, meanwhile, the every 5 minutes temperature for detecting and recording a shaft coupling are needed during detection
Degree.The detection of general shaft coupling takes longer, reachable 3-4 hour, and the rotation of shaft coupling is easy to drive inspection in detection process
Measured motor shakes, and causes motor output shaft to be broken or be bent, and due to larger vibrations, used power of motor is larger, and one
As be 250 kilowatts.
This detection mode not only wastes more electric power resource, and motor consumes, and it is difficult to ensure that operation in detection process
Person can accomplish that the record of time and temperature is in time and accurate as required.
Invention content
The object of the present invention is to provide a kind of shaft coupling manufacture rack running-in equipment, can preferably weaken detection motor
The detection motor seismism generated when shaft coupling to be measured being driven to rotate, to avoid detection motor impaired.
The present invention above-mentioned technical purpose technical scheme is that：
A kind of shaft coupling manufacture rack running-in equipment, including detection motor are located at the to be measured of the detection motor output end
Shaft coupling, described shaft coupling one end to be measured are connect by a universal shaft with the output end of the detection motor, and the other end is solid with tail
Fixed board is rotatablely connected, and the tail fixed plate is equipped with the thimble with the shaft coupling tail portion cooperation to be measured；Further include described in control
The electrical control system of motor work is detected, the shaft coupling to be measured is equipped with temperature sensor, the temperature sensor and institute
State electrical control system electrical connection.
Further, the universal shaft is connect by a connecting shaft with the shaft coupling to be measured, and the connecting shaft rotation is set
In in a support plate, the connecting shaft and the output shaft of the detection motor are coaxially disposed, and along its own axial rotation.
Further, tail fixed plate bottom is equipped with inverted T shaped foot, and workbench is equipped with and the inverted T shaped foot cooperation
Inverted T shaped foot slideway, the tail fixed plate sliding are set on the workbench, and institute can be fixed by being equipped in the inverted T shaped foot slideway
State the fixed structure of inverted T shaped foot.
Further, the fixed structure includes multiple arcs plate, and being equipped with corresponding arc vertically in the workbench slides
Road, described arc panel one end are located in the cambered way, and the other end skids off the cambered way, and multiple arc panels are by institute
Inverted T shaped foot is stated to fix.
Further, the arc panel, which is located at, is equipped with two that mutually sliding is socketed on the outside of one end in the cambered way
Casing, two described sleeve pipe inner ends are connected with the first spring, are equipped in the workbench and are erected with what described sleeve pipe coordinated vertically
Straight trough, the casing far from described arc panel one end are externally provided with a driving lever, and the workbench, the work are stretched out in described driving lever one end
Platform side wall is equipped with the recessing groove coordinated with the driving lever.
Further, the interior groove top of described sleeve pipe top surface and the vertical slots is respectively equipped with the magnet that can mutually adsorb.
Further, the shaft coupling to be measured and one end of the connection axis connection are equipped with a connector with bulb, institute
It states connecting shaft respective end and is equipped with the ball-and-socket coordinated with the connector, slide and be equipped with the bulb and institute outside the connector
State the locking set of ball-and-socket locking.
Further, the locking set sliding is set to outside the connector, and is axially slid along the connecting shaft, the company
Connector periphery is fixed with baffle, and the baffle is located in locking set, the one end of the locking set far from the connecting shaft
Second spring is equipped between inner wall and the baffle；The bulb side is cut into plane, in the locking set, is located at the plane
Top be equipped with restriction plate, the limiting groove coordinated with the restriction plate is equipped in the connecting shaft.
Further, the ball-and-socket inner surface is equipped with cushion pad, fine sand is filled in the cushion pad, and will by sheet rubber
It is limited in ball-and-socket inner surface.
The invention has the advantages that：
1. the present invention between shaft coupling to be measured and detection motor by increasing universal shaft and connecting shaft, and connecting shaft rotates
It is arranged in support plate, in this way, when detection motor drives shaft coupling rotation to be measured, it, should even if shaft coupling to be measured shakes
Vibrations are transmitted to connecting shaft first, and connecting shaft is arranged in support plate, therefore the vibrations are weakened for the first time, later, the shake
Dynamic to be transmitted to universal shaft by connecting shaft, the deflection of universal shaft makes the vibrations for being transmitted to detection motor weaken again, to finally pass
The vibrations for being delivered to detection motor are very small, protected to the full extent to detection motor；On the other hand, detection motor by
After protection, only need to play the effect for driving shaft coupling rotation to be measured, therefore, detecting the power of motor can subtract significantly
It is small, there are original 250 kilowatts 7.5 kilowatts reduced till now.
2. the present invention passes through and connects cephalic par by advance in shaft coupling end to be measured by one connector of flanged joint
Bulb and the ball-and-socket of connecting shaft end realize the quick connection of shaft coupling to be measured and connecting shaft, swift and convenient to operate and sales volume compared with
It is high；On the other hand, the locking set of the sliding setting outside connector, the restriction plate being set in locking set and the limit coordinated with it
Bulb can be more firmly fixed in ball-and-socket by the collaboration of the cutting planes of slot and bulb processed, these technical characteristics, avoid ball
The random rotation of head and ball-and-socket, it is ensured that connecting shaft can smoothly drive shaft coupling to be measured to rotate when rotating；It locks simultaneously in set
Second spring can be such that restriction plate is more firmly inserted in limiting groove, further increase the limitation to bulb.
3. one layer of cushion pad filled with fine sand is arranged in the inner surface of ball-and-socket in the present invention, and fine sand is limited in sheet rubber
The inner surface of ball-and-socket, compared with air cushion buffering or spring buffer, fine sand density is relatively large, can not only preferably remain in
The inner surface of ball-and-socket is more snugly contacted with bulb, meanwhile, compared with air cushion buffers, sheet rubber will not be generated larger
Pressure influences its service life to sheet rubber will not being caused to be chronically at pressured state, and spring buffer its can not ensure to delay
The compactness that punching pad is contacted with bulb；When bulb shakes with respect to ball-and-socket, bulb squeezes sheet rubber first, and sheet rubber generates shape
Become, squeeze fine sand, the fine sand of extruded parts can generate microdisplacement, and the cooperation of sheet rubber and fine sand can preferably buffer bulb
Shaking, and when bulb not shake when, sheet rubber restore deformation, fine sand playback, restore buffer capacity.
4. by the way that moveable tail fixed plate and fixed structure is arranged, it is various sizes of to be measured that different model can be met
The use of shaft coupling.Under normality, arc panel is contracted in cambered way, when the inverted T shaped foot of tail fixed plate is moved to corresponding position
Afterwards, it is moved down by driving lever drive sleeve, to drive arc panel to be skidded off out of cambered way, the arc panel of multiple stretchings forms flower
The lock pawl of petaloid fixes inverted T shaped foot；During casing moves down, the first spring gradually extends under its restoring force, to
Arc panel can be avoided arbitrarily to withdraw in cambered way, and the movement of inverted T shaped foot is in the horizontal direction, therefore, even if inverted T shaped foot moves
Dynamic, also in the horizontal direction to the crowded thrust of arc panel, under the limitation of cambered way, arc panel will not be extruded and be retracted to arc
In shape slideway.And the magnet mutually adsorbed is set in the inner top surface of the top surface of casing and vertical slots, it in this way can be more steady by casing
Admittedly stablize the groove top in vertical slots, avoid it from gliding and arc panel released into cambered way.
5. the position being connect with shaft coupling to be measured in tail fixed plate is equipped with thimble, shaft coupling to be measured is equipped with to be coordinated with thimble
Slot, the cooperation of thimble and slot can make operating personnel fast implement the centering of shaft coupling to be measured and tail fixed plate corresponding position,
Improve joint efficiency.
6. compared with the similar patent application document of another applied on the same day, the present invention is additionally provided with electric appliance on the table
Control system, the electrical control system are connect with computer, and temperature sensor is arranged on shaft coupling to be measured, in such manner, it is possible to according to
The period is set to shaft coupling to be measured progress temperature detection, and records data, while the work period of detection motor can be set.From
And a staff can operate multiple devices simultaneously, using the seating time, clamping of staggering the time improves working efficiency, reduces worker
Workload；And the data of record can keep in a computer, when facilitating subsequent detection same type shaft coupling to be measured, looking into for a long time
Data are tested, or are compared with other types shaft coupling to be measured, experimental data before retrospect is facilitated.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of shaft coupling manufacture rack running-in equipment overall structure schematic diagram of the present invention.
Fig. 2 is partial structurtes exploded perspective view of the present invention, is mainly used for showing the connection type of connector and connecting shaft.
Fig. 3 is lateral partial structurtes sectional view of the present invention, is mainly used for showing the connection type of connector and connecting shaft.
Fig. 4 is partial structural diagram of the present invention, is mainly used for showing the working method of fixed structure.
Fig. 5 is lateral partial structurtes sectional view of the present invention, is mainly used for showing the connection type of casing and arc panel.
In figure：1, workbench；10, electrical control system；2, motor is detected；3, universal shaft；4, connecting shaft；41, support plate；
42, ball-and-socket；43, cushion pad；44, sheet rubber；45, limiting groove；5, connector；51, bulb；52, locking set；53, baffle；54,
Second spring；55, restriction plate；6, shaft coupling to be measured；7, tail fixed plate；71, inverted T shaped foot；72, inverted T shaped slideway；8, fixed knot
Structure；81, arc panel；82, cambered way；83, casing；84, the first spring；85, driving lever；86, magnet；87, vertical slots；88, it allows
Position slot；9, thimble.
Specific implementation mode
Technical solution is clearly and completely described below in conjunction with specific embodiments of the present invention.Obviously, described
Embodiment be only the present invention a part of the embodiment, instead of all the embodiments.Based on the embodiment of the present invention, ability
The every other embodiment that domain those of ordinary skill is obtained without making creative work, belongs to guarantor of the present invention
The range of shield.
The present invention discloses a kind of shaft coupling manufacture rack running-in equipment, referring to Fig.1, including are arranged on workbench 1
Motor 2 is detected, the output end of detection motor 2 is connected with a universal shaft 3, and the one end of universal shaft 3 far from detection motor 2 is connect with one
Axis 4 connects, which is rotatably arranged in the support plate 41 that one is fixedly installed vertically, and the connecting shaft 4 and detection motor 2
Output shaft coaxial arrangement, and can be along its own axial rotation.
Referring to Figures 1 and 2, the one end of connecting shaft 4 far from motor by the connection type of bulb 51 and ball-and-socket 42 with it is to be measured
One end of shaft coupling 6 connects, and specific connection type is that 6 end of shaft coupling to be measured is fixedly connected by flange with a connector 5,
The end of the connector 5 is in 51 structure of bulb, and the top surface of the bulb 51 is cut into plane, and connecting shaft 4 is far from detection motor 2
One end be equipped with the ball-and-socket 42 that coordinate with bulb 51, and 42 inner surface of ball-and-socket is equipped with cushion pad 43, is filled in the cushion pad 43
There is fine sand, and these fine sands are limited in the inner surface of ball-and-socket 42 by sheet rubber 44.
With reference to Fig. 2 and Fig. 3, the periphery sliding sleeve of connector 5 is equipped with a locking and covers 52, and locking set 52 is along 5 axis of connector
To sliding.5 periphery of connector is fixed with baffle 53, which is located in locking set 52, and locking set 52 is far from connecting shaft 4
It is connected with second spring 54 between one end inner wall and baffle 53, is fixed positioned at the top of the cutting planes of bulb 51 in locking set 52
It is connected with a restriction plate 55, the limiting groove 45 coordinated with restriction plate 55 is offered in the ball-and-socket 42 of connecting shaft 4.
When needing shaft coupling 6 to be measured connecting with connecting shaft 4, operating personnel holds shaft coupling 6 to be measured, and locking is covered
52 squeeze to 6 direction of shaft coupling to be measured, and bulb 51 is made to expose；Bulb 51 is caught in the ball-and-socket 42 of connecting shaft 4 later, releasing pair
Locking set 52 limitation, locking set 52 under the restoring force of second spring 54 to 4 direction of connecting shaft move, to by bulb 51 with
Ball-and-socket 42 is limited in locking set 52；Meanwhile restriction plate 55 is inserted into limiting groove 45, and bulb 51 is firmly secured to ball-and-socket 42
It is interior, avoid the two arbitrarily rotation.
Referring to Fig.1, the tail end of shaft coupling 6 to be measured passes through on flange and the tail fixed plate 7 being slidably arranged on workbench 1
Shaft connects, to which after the completion of connecting shaft coupling 6 to be measured, detection motor 2 rotates, you can passes through universal shaft 3, connecting shaft 4
Shaft coupling 6 to be measured is driven to rotate.In the present embodiment, electrical control system 10 is additionally provided on workbench 1, the electrical equipment control system
System 10 is connect with computer, is pasted equipped with temperature sensor (not shown) on shaft coupling 6 to be measured.Computer and electrical equipment control
System 10 and temperature sensor are used cooperatively, and can set the work period of detection motor 2, and according to certain period pair
Shaft coupling 6 to be measured carries out temperature detection, and records data.Temperature sensor and computer system are used cooperatively and using calculating
The technology that machine controls motor rotation is the prior art, and this will not be repeated here for internal circuit system.
Referring to Fig.1, Fig. 4 and Fig. 5, tail fixed plate 7 and the specific connection type of workbench 1 are in the present embodiment, solid in tail
The bottom of fixed board 7 is equipped with inverted T shaped foot 71, be radially respectively equipped with broadwise on workbench 1 several it is interlaced, with should fall
The inverted T shaped slideway 72 that T-type foot 71 coordinates, being provided with several in the inverted T shaped slideway 72 can be fixed solid by the inverted T shaped foot 71
Determine structure 8.Each fixed structure 8 includes multiple arcs plate 81, four arc panels being arranged for circumference array in the present embodiment
81, workbench 1 is interior, is equipped with corresponding cambered way 82 vertically positioned at the lower section of inverted T shaped slideway 72.The sliding of each arc panel 81 connects
It is connected in corresponding cambered way 82, one end is always positioned in cambered way 82, and the other end can slide and stretch out cambered way
82, four arc panels 81 form a petal-like lock pawl, when inverted T shaped foot 71 is moved in the lock pawl, arc panel 81
It is stretched out in from cambered way 82, and inverted T shaped foot 71 is locked.
With reference to Fig. 4 and Fig. 5, arc panel 81 is located at two that one end outer wall in cambered way 82 is hinged with mutually sliding socket
A casing 83, and the two opposite casings 83 for two arc panels 81 being oppositely arranged are fixedly connected, each group of two casings
The first spring 84 is connected in 83.For arc panel 81 when arcuately slideway 82 slides, casing 83 is vertically sliding in workbench 1
It moves, the vertical slots 87 moved for casing 83 is equipped in workbench 1.When arc panel 81 is located in cambered way 82, the first spring
84 are in compressive state, and with the sliding of arc panel 81, the distance between opposite two 81 outer walls of arc panel become larger, and two
A casing 83 is opposite to be gradually distance from, and the first spring 84 extends, and final arc panel 81 rests on its bottom end and is in horizontal position,
The other end stretches out cambered way 82, and inverted T shaped foot 71 is locked.The position level that two casings 83 are fixedly connected is fixedly connected with one
1 side wall of workbench is stretched out in driving lever 85,85 one end of driving lever, and 1 sidewalls vertical of workbench is equipped with the recessing groove 88 coordinated with driving lever 85,
To which staff need to only stir driving lever 85, you can drive sleeve 83 moves.Or staff can also be manually by arc panel
81 push into cambered way 82, to release limitation of the arc panel 81 to inverted T shaped foot 71.On the other hand, casing 83 and vertical slots
87 interior groove top is pasted with the magnet 86 that can mutually adsorb respectively, when staff moves either manually or by 85 drive sleeve 83 of driving lever
It moves to vertical slots 87 when pushing up, magnet 86 can fix casing 83, and casing 83 is avoided to be moved down under the action of the first spring 84；Together
When, when casing 83 is moved to the bottom surface of vertical slots 87, the adsorption capacity of magnet 86 is less than the elastic force of the first spring 84, and casing 83 is not
It can be moved up under the absorption of magnet 86.
Further, referring to Fig.1, the position being connect with shaft coupling 6 to be measured in tail fixed plate 7 is equipped with thimble 9, shaft coupling to be measured
Device 6 is equipped with the slot coordinated with thimble 9, and the cooperation of thimble 9 and slot can make operating personnel fast implement shaft coupling 6 and tail to be measured
The centering of 7 corresponding position of fixed plate improves joint efficiency.
Claims (9)
- The rack running-in equipment 1. a kind of shaft coupling dispatches from the factory, including detection motor (2) are located at described detection motor (2) output end Shaft coupling (6) to be measured, it is characterised in that：Described shaft coupling to be measured (6) one end passes through a universal shaft (3) and the detection motor (2) output end connection, the other end and tail fixed plate (7) are rotatablely connected, the tail fixed plate (7) be equipped with it is described to be measured The thimble (9) of axis device (6) tail portion cooperation；Further include the electrical control system (10) that the control detection motor (2) works, it is described Shaft coupling (6) to be measured is equipped with temperature sensor, and the temperature sensor is electrically connected with the electrical control system (10).
- The rack running-in equipment 2. a kind of shaft coupling according to claim 1 dispatches from the factory, it is characterised in that：The universal shaft (3) It is connect with the shaft coupling (6) to be measured by a connecting shaft (4), connecting shaft (4) rotation is set in a support plate (41), institute It states connecting shaft (4) and the output shaft of the detection motor (2) is coaxially disposed, and along its own axial rotation.
- The rack running-in equipment 3. a kind of shaft coupling according to claim 1 dispatches from the factory, it is characterised in that：The tail fixed plate (7) bottom is equipped with inverted T shaped foot (71), and workbench (1) is equipped with the inverted T shaped slideway (72) with inverted T shaped foot (71) cooperation, institute Tail fixed plate (7) sliding is stated to be set on the workbench (1), it is described inverted T shaped equipped with that can fix in the inverted T shaped slideway (72) The fixed structure (8) of foot (71).
- The rack running-in equipment 4. a kind of shaft coupling according to claim 3 dispatches from the factory, it is characterised in that：The fixed structure (8) include multiple arcs plate (81), be equipped with corresponding cambered way (82), the arc panel in the workbench (1) vertically (81) one end is located in the cambered way (82), and the other end skids off the cambered way (82), multiple arc panels (81) The inverted T shaped foot (71) is fixed.
- The rack running-in equipment 5. a kind of shaft coupling according to claim 4 dispatches from the factory, it is characterised in that：The arc panel (81) Two casings (83) of mutually sliding socket, two described sleeve pipes are equipped on the outside of one end in the cambered way (82) (83) inner end is connected with the first spring (84), be equipped with vertically in the workbench (1) coordinate with described sleeve pipe (83) it is vertical Slot (87), the casing (83) far from the arc panel (81) one end are externally provided with a driving lever (85), and described driving lever (85) one end is stretched out The workbench (1), workbench (1) side wall are equipped with the recessing groove (88) coordinated with the driving lever (85).
- The rack running-in equipment 6. a kind of shaft coupling according to claim 4 dispatches from the factory, it is characterised in that：Described sleeve pipe (83) is pushed up The interior groove top of face and the vertical slots (87) is respectively equipped with the magnet (86) that can mutually adsorb.
- The rack running-in equipment 7. a kind of shaft coupling according to claim 2 dispatches from the factory, it is characterised in that：The shaft coupling to be measured (6) one end being connect with the connecting shaft (4) is equipped with a connector (5) with bulb (51), connecting shaft (4) respective end Equipped with the ball-and-socket (42) coordinated with the connector (5), the connector (5) slide outside equipped with by the bulb (51) with it is described The locking set (52) of ball-and-socket (42) locking.
- The rack running-in equipment 8. a kind of shaft coupling according to claim 7 dispatches from the factory, it is characterised in that：The locking covers (52) Sliding is set to the connector (5) outside, and is axially slid along the connecting shaft (4), and connector (5) periphery is fixed with gear Plate (53), the baffle (53) are located in locking set (52), the described one end of locking set (52) far from the connecting shaft (4) Second spring (54) is equipped between inner wall and the baffle (53)；Bulb (51) side is cut into plane, the locking set (52) in, the top for being located at the plane is equipped with restriction plate (55), is equipped in the connecting shaft (4) and coordinates with the restriction plate (55) Limiting groove (45).
- The rack running-in equipment 9. a kind of shaft coupling according to claim 8 dispatches from the factory, it is characterised in that：In the ball-and-socket (42) Surface is equipped with cushion pad (43), fills fine sand in the cushion pad (43), and be limited in ball-and-socket by sheet rubber (44) (42) inner surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810610021.3A CN108801628B (en) | 2018-06-13 | 2018-06-13 | Coupler delivery rack running-in equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810610021.3A CN108801628B (en) | 2018-06-13 | 2018-06-13 | Coupler delivery rack running-in equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108801628A true CN108801628A (en) | 2018-11-13 |
| CN108801628B CN108801628B (en) | 2020-04-21 |
Family
ID=64086122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810610021.3A Active CN108801628B (en) | 2018-06-13 | 2018-06-13 | Coupler delivery rack running-in equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108801628B (en) |
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| CN105784358A (en) * | 2016-05-04 | 2016-07-20 | 青岛科技大学 | Fan-shaped tooth universal coupler test stand |
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| Publication number | Publication date |
|---|---|
| CN108801628B (en) | 2020-04-21 |
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