General aircraft self-cleaning device

文档序号:1281239 发布日期:2020-08-28 浏览:28次 中文

阅读说明:本技术 一种通用飞机自动清洗装置 (General aircraft self-cleaning device ) 是由 朱颂华 刘韬 梁飞 曾辉 于 2020-04-21 设计创作,主要内容包括:本发明公开了一种通用飞机自动清洗装置,包括机体与轨道杆以及蓄水箱,所述机体头部设置有扇叶,所述机体头部顶端位置设置有驾驶舱,所述机体底部设置有导轮,所述机体两侧端面中部位置设置有机翼,所述轨道杆位于机体下方导轮之间位置,所述轨道杆底部设置有两对固定脚,所述固定脚之间底部位置设置有横梁,所述轨道杆相对端面设置有活动滑槽,所述活动滑槽内设置有可调节的顶板,所述蓄水箱上端面两侧位置设置有连接板,所述连接板顶部连接到顶板下端面。本发明所述的一种通用飞机自动清洗装置,通过在飞机底部设置轨道杆,并利用轨道杆安装可滑动的蓄水箱与驱动箱,利用蓄水箱前端面的喷头即可对机体底部进行全面高效的清洗。(The invention discloses a general airplane automatic cleaning device which comprises an airplane body, a rail rod and a water storage tank, wherein fan blades are arranged on the head of the airplane body, a cockpit is arranged at the top end of the head of the airplane body, guide wheels are arranged at the bottom of the airplane body, wings are arranged in the middle of end faces on two sides of the airplane body, the rail rod is arranged between the guide wheels below the airplane body, two pairs of fixing feet are arranged at the bottom of the rail rod, a cross beam is arranged at the bottom between the fixing feet, a movable sliding groove is arranged on the opposite end face of the rail rod, an adjustable top plate is arranged in the movable sliding groove, connecting plates are arranged on two sides of the upper end face of the water storage tank. According to the automatic cleaning device for the universal airplane, the rail rod is arranged at the bottom of the airplane, the slidable water storage tank and the drive tank are installed by utilizing the rail rod, and the bottom of the airplane body can be cleaned comprehensively and efficiently by utilizing the spray head on the front end face of the water storage tank.)

1. The utility model provides a general aircraft self-cleaning device which characterized in that: comprises a machine body (1), a track rod (6) and a water storage tank (7), wherein the head of the machine body (1) is provided with fan blades (2), the top end position of the head of the machine body (1) is provided with a cockpit (4), the bottom of the machine body (1) is provided with a guide wheel (3), the middle positions of the end surfaces of the two sides of the machine body (1) are provided with wings (5), the track rod (6) is positioned between the guide wheels (3) below the machine body (1), the bottom of the track rod (6) is provided with two pairs of fixed feet (43), the bottom position between the fixed feet (43) is provided with a cross beam (44), the opposite end surfaces of the track rod (6) are provided with movable sliding chutes (13), adjustable top plates (12) are arranged in the movable sliding chutes (13), the two side positions of the upper end surface of the water storage tank (7) are provided with connecting plates (11, the water storage tank is characterized in that a water storage tank (14) is arranged in the water storage tank (7), a splitter plate (17) is arranged on the rear wall of the water storage tank (14), an adjustable pushing plate (18) is arranged below the splitter plate (17) at the bottom of the water storage tank (14), a driving tank (8) is arranged behind the water storage tank (7), a hydraulic push rod (26) is arranged in the driving tank (8) in a position corresponding to the pushing plate (18), an adjustable draining circular plate (23) is arranged above the splitter plate (17) at the top of the water storage tank (14), a plurality of drainage nozzles (9) are arranged at the top of the front end face of the water storage tank (7), and a pressure handle (10) is arranged at the position corresponding to the top plate (12) on one side end face of.

2. The general automatic cleaning device for the aircraft as claimed in claim 1, wherein: the connecting plate (11) and the top plate (12) are integrally formed, the connecting plate (11) is connected to the upper end face of the water storage tank (7) through welding, a plurality of steel balls (39) are arranged at two side positions of the lower end face of the top plate (12), and an arc-shaped sliding groove (40) is arranged on the lower wall of the movable sliding groove (13) corresponding to the steel balls (39).

3. The general automatic cleaning device for the aircraft as claimed in claim 1, wherein: pressure handle (10) afterbody is provided with fixed plectane (30), fixed plectane (30) rear end face middle part position is provided with reference column (31), a track pole (6) side end face corresponds reference column (31) position and is provided with round hole (32), round hole (32) afterbody is connected to movable sliding groove (13), roof (12) a side end face corresponds round hole (32) position and is provided with circular recess (33), reference column (31) head passes round hole (32) and stretches into circular recess (33) bottom, reference column (31) afterbody is provided with cushion (38).

4. The general automatic cleaning device for the aircraft as claimed in claim 3, wherein: the fixture block (41) is arranged in the middle of the lower end face of the positioning column (31), a positioning sliding groove (34) is formed in the position, corresponding to the fixture block (41), of the lower wall of the round hole (32), a fixing column (35) is arranged between the inner walls of the two sides of the positioning sliding groove (34), a main through hole (36) is formed in the middle of the fixture block (41) and corresponds to the fixing column (35), the fixing column (35) penetrates through the main through hole (36), and a reset spring (37) is arranged in the position, in front of the fixture block (41).

5. The general automatic cleaning device for the aircraft as claimed in claim 1, wherein: the upper end face and the lower end face of the pushing plate (18) are respectively provided with a limiting slide block (19), and the lower end face of the flow distribution plate (17) and the lower wall of the water storage tank (14) are respectively provided with a rectangular sliding groove (20) corresponding to the limiting slide blocks (19).

6. The general automatic cleaning device for the aircraft as claimed in claim 1, wherein: the water storage tank (14) front wall is provided with a main drainage groove (15) corresponding to the drainage nozzle (9), the middle part of the drainage nozzle (9) is provided with an auxiliary drainage groove (16) corresponding to the main drainage groove (15), and an included angle between the drainage nozzle (9) and the top of the water storage tank (7) is 45 degrees.

7. The general automatic cleaning device for the aircraft as claimed in claim 1, wherein: the water storage tank is characterized in that a guide post (21) is arranged on the rear wall of the water storage tank (14) above the flow distribution plate (17), the bottom of the guide post (21) is fixed to the rear wall of the water storage tank (14) through a base plate, a communication hole (42) is formed in the middle of the flow discharge circular plate (23) corresponding to the guide post (21), the head of the guide post (21) penetrates through the communication hole (42) and is provided with a clamping plate (24), the clamping plate (24) is located on the upper portion of the head of the flow distribution plate (17), a main spring (22) is arranged on the outer ring of the guide post (21), and the head of the main spring (.

8. The automatic cleaning device for the general-purpose aircraft according to claim 1, wherein: the water storage tank is characterized in that a main circular groove (28) and an auxiliary circular groove (29) are respectively formed in the positions, corresponding to the hydraulic push rod (26), of the opposite end faces of the water storage tank (7) and the driving tank (8), the head of the hydraulic push rod (26) penetrates through the main circular groove (28) and the auxiliary circular groove (29) and is connected to the rear end face of the pushing plate (18), a driving bin (25) is arranged in the driving tank (8), and a motor (27) is arranged at the bottom of the driving bin (25) below the hydraulic push rod (26).

Technical Field

The invention relates to the field of general airplanes, in particular to an automatic cleaning device for a general airplane.

Background

With the continuous development of aviation technology, more and more kinds of small airplanes enter the lives of people, including various private airplanes, rescue machines, coaches and the like, when a general airplane is cleaned, because the bottom of the general airplane is easy to be dirty, and the bottom of the general airplane is lower in position, maintenance personnel are difficult to enter the bottom of the general airplane to clean the general airplane with high precision, so that the bottom of the general airplane is covered with impurities such as dust, mud and the like for a long time, and the maintenance and the service of the general airplane are not facilitated.

Disclosure of Invention

The invention mainly aims to provide a general automatic airplane cleaning device which can effectively solve the problems in the background technology.

In order to achieve the purpose, the invention adopts the technical scheme that:

a general airplane automatic cleaning device comprises an airplane body, a rail rod and a water storage tank, wherein the head of the airplane body is provided with fan blades, the top end of the head of the airplane body is provided with a cockpit, the bottom of the airplane body is provided with guide wheels, the middle positions of the end surfaces of the two sides of the airplane body are provided with wings, the rail rod is positioned between the guide wheels below the airplane body, the bottom of the rail rod is provided with two pairs of fixing feet, the bottom position between the fixing feet is provided with a cross beam, the opposite end surfaces of the rail rod are provided with movable sliding grooves, adjustable top plates are arranged in the movable sliding grooves, the two side positions of the upper end surface of the water storage tank are provided with connecting plates, the tops of the connecting plates are connected to the lower end surface of the top plate, the water storage tank is internally provided with, the water storage tank is characterized in that a driving tank is arranged behind the water storage tank, a hydraulic push rod is arranged in the driving tank corresponding to the position of the pushing plate, an adjustable drainage circular plate is arranged at the top of the water storage tank above the flow distribution plate, a plurality of drainage nozzles are arranged at the top of the front end face of the water storage tank, and a pressure handle is arranged on the end face of one side of the rail rod corresponding to the position of the top plate.

Preferably, the connecting plate is connected to the upper end face of the water storage tank through welding, a plurality of steel balls are arranged at two side positions of the lower end face of the top plate, arc-shaped sliding grooves are formed in the lower walls of the movable sliding grooves corresponding to the steel balls, the steel balls are arranged at two side positions of the lower end face of the top plate and clamped into the corresponding arc-shaped sliding grooves, friction of the top plate in the movable sliding grooves is reduced, and the position of the water storage tank is convenient to adjust.

Preferably, pressure handle afterbody is provided with fixed plectane, fixed plectane rear end face middle part position is provided with the reference column, track pole a side end face corresponds the reference column position and is provided with the round hole, round hole afterbody is connected to movable sliding chute, roof a side end face corresponds the round hole position and is provided with circular recess, the reference column head passes the round hole and stretches into circular recess bottom, the reference column afterbody is provided with the cushion, through setting up fixed plectane and reference column at pressure handle rear to correspond the reference column in roof one side and set up circular recess, utilize the reference column card to go into the position that circular recess can fix the roof, thereby fixed water storage box and drive box position.

Preferably, the middle position of the lower end face of the positioning column is provided with a clamping block, the position of the round hole lower wall corresponding to the clamping block is provided with a positioning sliding groove, a fixing column is arranged between the inner walls of two sides of the positioning sliding groove, the middle part of the clamping block is provided with a main through hole corresponding to the fixing column, the fixing column penetrates through the main through hole, a reset spring is arranged at the position, in front of the clamping block, of the outer ring of the fixing column, the clamping block is arranged below the positioning column, the reset spring is arranged on the outer ring of the fixing column, the spring is.

Preferably, the terminal surface all is provided with spacing slider about bulldozing the board, terminal surface and catch basin lower wall all correspond spacing slider and are provided with the rectangle spout under the flow distribution plate, set up spacing slider and block in the rectangle spout through terminal surface about bulldozing the board, guarantee to bulldoze the stability of board when the motion.

Preferably, the water storage tank antetheca corresponds drainage shower nozzle position and is provided with main drainage groove, drainage shower nozzle middle part corresponds main drainage groove and is provided with vice drainage groove, the contained angle between drainage shower nozzle and the water storage tank top is 45 degrees, through setting up the drainage shower nozzle in main drainage groove position to the angle that makes the shower nozzle just is terminal surface under the organism, thereby reaches the washing of high efficiency high accuracy.

Preferably, a guide pillar is arranged on the upper portion of the diversion plate on the rear wall of the water storage tank, the bottom of the guide pillar is fixed to the rear wall of the water storage tank through a base plate, a communication hole is formed in the middle of the drainage circular plate and corresponds to the guide pillar, the head of the guide pillar penetrates through the communication hole and is provided with a clamping plate, the clamping plate is located on the upper portion of the head of the diversion plate, a main spring is arranged on the outer ring of the guide pillar, the head of the main spring is connected to the rear end face of the drainage circular plate, the guide pillar is arranged in the middle of the drainage circular plate, the main spring is arranged on the outer ring of the guide pillar, the drainage circular plate is pushed by the main spring to move.

Preferably, the water storage tank corresponds the hydraulic push rod position with the drive box opposite end and is provided with main circular slot and vice circular slot respectively, hydraulic push rod head passes main circular slot and vice circular slot and is connected to bulldoze the board rear end face, be provided with the drive storehouse in the drive box, the drive storehouse bottom is provided with the motor in hydraulic push rod below position, through set up hydraulic push rod and motor bulldozing the board rear, thereby drives and bulldozes the board at the uniform velocity efficient and carry out reciprocating motion to extrude rivers in the water storage tank and make it wash the organism lower extreme face through the drainage shower nozzle.

Compared with the prior art, the invention has the following beneficial effects:

in the invention, steel balls are arranged at the two sides of the lower end face of the top plate and are clamped into the corresponding arc-shaped chutes, so that the friction of the top plate in the movable chutes is reduced, the position of the water storage box is convenient to adjust, a fixed circular plate and a positioning column are arranged behind the pressure handle, a circular groove is arranged at one side of the top plate and corresponds to the positioning column, the position of the top plate can be fixed by clamping the positioning column into the circular groove, so that the positions of the water storage box and the driving box are fixed, a clamping block is arranged below the positioning column, a return spring is arranged on the outer ring of the fixing column, the clamping block and the positioning column are driven by the spring to move, so that the positioning column is clamped into the circular groove for fixing, a limiting slide block is arranged on the upper end face and the lower end face of the pushing plate and is clamped into the rectangular, thereby reach the washing of high efficiency high accuracy, through set up the guide pillar in the middle part of the earial drainage plectane, and set up main spring at the guide pillar outer lane, utilize main spring to promote the earial movement of earial drainage, the earial drainage plectane can guide rivers to the top when water pressure is too big, avoid the inside water pressure of water storage box too big and cause danger, through setting up hydraulic push rod and motor bulldozing the board rear, thereby drive and bulldoze the board and carry out reciprocating motion at the uniform velocity efficient, and the rivers of extrusion catch basin make it wash the terminal surface under the organism through the drainage shower nozzle.

Drawings

FIG. 1 is a side cross-sectional view of a general aircraft self-cleaning device of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is a front cross-sectional view of a track bar of a general automatic aircraft cleaning device of the present invention;

fig. 4 is an enlarged view at B in fig. 3.

In the figure: 1. a body; 2. a fan blade; 3. a guide wheel; 4. a cockpit; 5. an airfoil; 6. a track rod; 7. a water storage tank; 8. a drive box; 9. a drainage spray head; 10. a pressure grip; 11. a connecting plate; 12. a top plate; 13. a movable chute; 14. a water storage tank; 15. a main drainage groove; 16. an auxiliary drainage groove; 17. a flow distribution plate; 18. a push plate; 19. a limiting slide block; 20. a rectangular chute; 21. a guide post; 22. a main spring; 23. a bleed flow circular plate; 24. clamping a plate; 25. a driving bin; 26. a hydraulic push rod; 27. a motor; 28. a main circular groove; 29. a secondary circular groove; 30. fixing the circular plate; 31. a positioning column; 32. a circular hole; 33. a circular groove; 34. positioning the chute; 35. fixing a column; 36. a main through hole; 37. a return spring; 38. an elastic pad; 39. steel balls; 40. an arc-shaped chute; 41. a clamping block; 42. a communicating hole; 43. a fixing leg; 44. a cross member.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in figures 1-4, a general airplane automatic cleaning device comprises a machine body 1, a track rod 6 and a water storage tank 7, wherein the head of the machine body 1 is provided with fan blades 2, the top end of the head of the machine body 1 is provided with a cockpit 4, the bottom of the machine body 1 is provided with a guide wheel 3, the middle position of the end surfaces of two sides of the machine body 1 is provided with wings 5, the track rod 6 is positioned between the guide wheels 3 below the machine body 1, the bottom of the track rod 6 is provided with two pairs of fixed feet 43, the bottom position between the fixed feet 43 is provided with a cross beam 44, the opposite end surface of the track rod 6 is provided with a movable sliding chute 13, an adjustable top plate 12 is arranged in the movable sliding chute 13, the positions of two sides of the upper end surface of the water storage tank 7 are provided with connecting plates 11, the top of the connecting plates 11 is connected to the lower end surface, a driving box 8 is arranged at the rear part of the water storage box 7, a hydraulic push rod 26 is arranged in the driving box 8 corresponding to the position of the pushing plate 18, an adjustable drainage circular plate 23 is arranged at the top part of the water storage tank 14 above the flow distribution plate 17, a plurality of drainage nozzles 9 are arranged at the top part of the front end surface of the water storage box 7, and a pressure handle 10 is arranged at the position of one side end surface of the track rod 6 corresponding to the top plate 12.

The connecting plate 11 and the top plate 12 are integrated into a whole, the connecting plate 11 is connected to the upper end face of the water storage tank 7 through welding, a plurality of steel balls 39 are arranged at two side positions of the lower end face of the top plate 12, and an arc-shaped chute 40 is arranged at the lower wall of the movable chute 13 corresponding to the steel balls 39; the tail part of the pressure handle 10 is provided with a fixed circular plate 30, the middle part of the rear end face of the fixed circular plate 30 is provided with a positioning column 31, one side end face of the track rod 6 is provided with a round hole 32 corresponding to the positioning column 31, the tail part of the round hole 32 is connected to the movable sliding chute 13, one side end face of the top plate 12 is provided with a round groove 33 corresponding to the round hole 32, the head part of the positioning column 31 passes through the round hole 32 and extends into the bottom of the round groove 33; a fixture block 41 is arranged in the middle of the lower end face of the positioning column 31, a positioning sliding groove 34 is arranged on the lower wall of the round hole 32 corresponding to the fixture block 41, a fixing column 35 is arranged between the inner walls of two sides of the positioning sliding groove 34, a main through hole 36 is arranged in the middle of the fixture block 41 corresponding to the fixing column 35, the fixing column 35 penetrates through the main through hole 36, and a return spring 37 is arranged on the outer ring of the fixing column 35 in; the upper end surface and the lower end surface of the pushing plate 18 are both provided with a limiting slide block 19, and the lower end surface of the flow distribution plate 17 and the lower wall of the water storage tank 14 are both provided with a rectangular sliding groove 20 corresponding to the limiting slide block 19; a main drainage groove 15 is formed in the front wall of the water storage groove 14 corresponding to the drainage spray head 9, an auxiliary drainage groove 16 is formed in the middle of the drainage spray head 9 corresponding to the main drainage groove 15, and the included angle between the drainage spray head 9 and the top of the water storage tank 7 is 45 degrees; the rear wall of the water storage tank 14 is provided with a guide post 21 above the flow distribution plate 17, the bottom of the guide post 21 is fixed to the rear wall of the water storage tank 14 through a backing plate, the middle part of the flow discharge circular plate 23 is provided with a communication hole 42 corresponding to the guide post 21, the head of the guide post 21 penetrates through the communication hole 42 and is provided with a clamping plate 24, the clamping plate 24 is located above the head of the flow distribution plate 17, the outer ring of the guide post 21 is provided with a main spring 22, and the head of the main spring; the opposite end surfaces of the water storage tank 7 and the driving tank 8 are respectively provided with a main circular groove 28 and an auxiliary circular groove 29 corresponding to the position of the hydraulic push rod 26, the head of the hydraulic push rod 26 penetrates through the main circular groove 28 and the auxiliary circular groove 29 and is connected to the rear end surface of the push plate 18, a driving bin 25 is arranged in the driving tank 8, and the bottom of the driving bin 25 is provided with a motor 27 below the hydraulic push rod 26.

It should be noted that, the invention is a universal automatic airplane cleaning device, by arranging a track rod 6 at the bottom of the airplane, and using the track rod 6 to install a slidable water storage tank 7 and a driving tank 8, the bottom of the airplane body 1 can be cleaned comprehensively and efficiently by using a drainage nozzle 9 on the front end surface of the water storage tank 7, when in use, the track rod 6 at the bottom of the airplane body 1 is found first, a pressure handle 10 is arranged on one side end surface of the track rod 6, the pressure handle 10 is held and pulled outwards, the pressure handle 10 drives a rear fixed circular plate 30 and a positioning column 31 to move outwards, the positioning column 31 drives a fixture block 41 at the bottom to move and extrudes a return spring 37 on the outer ring of the fixing column 35, the return spring 37 is stressed to compress until the head of the positioning column 31 leaves a circular groove 33 where the positioning column is located, at this time, a top plate 12 can move in a movable chute, the motor 27 drives the hydraulic push rod 26 to move, the hydraulic push rod 26 drives the push plate 18 with the head connected to move forward, the push plate 18 extrudes the water flow in the water storage tank 14 to move forward, the water flow in the water storage tank 14 rises to the position of the drainage spray head 9 after moving and is sprayed out through the main drainage groove 15 and the auxiliary drainage groove 16, the water flow is directly sprayed to the lower end face of the machine body 1 under the action of pressure, so that the bottom of the machine body 1 is cleaned with high strength, when the speed of the hydraulic push rod 26 is too high, so that the bottom of the water storage tank 14 generates excessive pressure, the lifted water flow extrudes the drainage circular plate 23 above the diverter plate 17, so that the drainage circular plate 23 moves backward along the guide post 21, the drainage circular plate 23 extrudes the main spring 22 on the outer ring of the guide post 21 during moving, the main spring 22 is compressed under the stress, the drainage circular plate 23 enlarges the space occupied by the water flow in the water storage tank 14 after moving continuously, after the bottom of the airplane is cleaned by water flow in the drainage nozzle 9, the pressure handle 10 can be loosened and the water storage tank 7 is pushed to move forwards, the positioning column 31 extends into the movable chute 13 under the action of elasticity, so that the top plate 12 is prevented from sliding backwards, the water storage tank 7 is prevented from being separated from the track rods 6, the water storage tank 7 drives the connecting plate 11 above the water storage tank to move, the connecting plate 11 drives the top plate 12 at the top to move, so that the two ends of the top plate 12 move along the movable chute 13, the steel balls 39 at the two side positions of the lower end surface of the top plate 12 move along the arc-shaped chute 40, so that the friction between the top plate 12 and the lower wall of the movable chute 13 is reduced, the water storage tank 7 moves more smoothly, after the water storage tank 7 moves continuously, the position flushed by the water flow in the drainage nozzle 9 is continuously changed, and the bottom of the airplane body, after the airplane is cleaned, the water storage tank 7 can slide to the tail position of the track rod 6, the motor 27 is turned off, the top plate 12 cannot move due to the blocking of the positioning column 31, then the pressure handle 10 on the end face of one side of the track rod 6 is found again and pulled outwards, the pressure handle 10 drives the positioning column 31 to move forwards again, so that the tail of the positioning column 31 is separated from the movable chute 13, the top plate 12 is not blocked by the positioning column 31 any more, then the water storage tank 7 can continuously slide backwards until the top plate 12 on the top of the water storage tank 7 is separated from the movable chute 13, the water storage tank 7 and the driving tank 8 are connected at the tail position of the track rod 6, and the water storage tank 7 is detached from the bottom of the airplane, so that the weight of the airplane is reduced, and the airplane can conveniently carry; when the bottom of the machine body 1 needs to be cleaned again, the water storage tank 7 is arranged between the track rods 6, and the motor 27 is started to push the water storage tank 7 to perform sliding cleaning.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

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