CN114365611A

CN114365611A - Fertilizer applicator for rice seedbed

Info

Publication number: CN114365611A
Application number: CN202210014723.1A
Authority: CN
Inventors: 王家宝; 孙义祥; 邬刚; 袁嫚嫚; 井玉丹; 何苇竹
Original assignee: Institute of Soil and Fertilizer of Anhui Academy of Agricultural Sciences
Current assignee: Institute of Soil and Fertilizer of Anhui Academy of Agricultural Sciences
Priority date: 2022-01-07
Filing date: 2022-01-07
Publication date: 2022-04-19
Anticipated expiration: 2042-01-07
Also published as: CN114365611B

Abstract

The invention discloses a fertilizer spreader for a rice seedbed, which comprises a rack, a liquid fertilizer box and a solid fertilizer box, wherein a cleaning device is arranged on the rack, the cleaning device comprises an annular scraper blade which slides vertically and a plurality of cylinders which are arranged at the top of the rack, piston rods of the cylinders are vertically and downwards fixedly connected with the top of the annular scraper blade, and the annular scraper blade can be abutted against the inner wall of the solid fertilizer box. The invention is convenient for cleaning the inner wall of the solid fertilizer box.

Description

Fertilizer applicator for rice seedbed

Technical Field

The invention relates to the technical field of rice cultivation and planting, in particular to a fertilizer spreader for a rice seedbed.

Background

At present, strong seedlings are mainly cultivated in the early growth stage of transplanted rice, so that the nutrient condition of a seedling bed has a direct relation with the health of the rice seedlings, and the application of organic fertilizer can create soft bed soil, so that the bed soil is coordinated with water, fertilizer, gas and heat, and a good growth environment is created for the seedlings.

The correlation technique can refer to the chinese utility model patent that the grant bulletin number is CN205124331U, it discloses a rice seedbed fertilizer spills and applies the ware, place two i-shaped rails in the both sides of subaerial rice seedbed, can inject liquid fertilizer into inside the liquid fertilizer can box through annotating fertile mouthful department, add solid fertilizer case with fertilizer, the effect through keeping off the fertilizer board can be more convenient add solid fertilizer wherein, open the valve, the rethread handle exerts force, make whole device at the uniform velocity removal, can carry out simultaneous application to the fertilizer of two kinds of different states. The device not only can broadcast liquid fertilizer, but also can broadcast solid fertilizer.

However, the above structure is inconvenient for cleaning the inner wall of the solid fertilizer box, thereby possibly causing waste of the solid fertilizer.

Disclosure of Invention

The application provides a rice seedbed fertilizer spills and applies ware is convenient for clear up the inner wall of solid-state fertilizer case.

The application provides a rice seedbed fertilizer spills and applies ware adopts following technical scheme:

the utility model provides a rice seedbed fertilizer spills and applies ware, includes frame, liquid fertilizer case and solid-state fertilizer case, install cleaning device in the frame, cleaning device includes along the vertical annular scraper blade that slides and installs in a plurality of cylinders at frame top, the vertical downward top fixed connection with annular scraper blade of piston rod of cylinder, annular scraper blade can the butt in the inner wall of solid-state fertilizer case.

By adopting the technical scheme, when the inner wall of the solid fertilizer box needs to be cleaned, the piston rod of the air cylinder drives the annular scraper to move, and the annular scraper can clean the inner wall of the solid fertilizer box by moving; through the cleaning device who sets up, be convenient for clear up the inner wall of solid-state fertilizer case.

Preferably, a cavity is formed in the annular scraper, the bottom of the cavity is communicated with a plurality of spray heads, and the spray heads are arranged towards the inner wall of the solid fertilizer box; a middle pipe is arranged in the middle of the annular scraper, and two ends of the middle pipe are communicated with the cavity; and a water supply mechanism for supplying water to the intermediate pipe is installed at the top of the rack.

Through adopting above-mentioned technical scheme, supply water to the intermediate pipe through water supply mechanism, then water flows through intermediate pipe and cavity in proper order after, spouts the inner wall to solid-state fertilizer case from the shower nozzle, can carry out comparatively thorough clearance to solid-state fertilizer case inner wall like this.

Preferably, the water supply mechanism comprises a collection box, the top of the collection box is provided with a plurality of openings communicated with the inner cavity of the collection box, the inner wall of each opening is connected with a sealing plate in a sliding manner along the vertical direction, and the inner side of the top of the collection box is provided with an elastic assembly for driving the sealing plate to reset; one side intercommunication of collecting box has the outlet pipe, the one end intercommunication that the collecting box was kept away from to the outlet pipe has the hose, the one end intercommunication that the outlet pipe was kept away from to the hose has the delivery pipe, the one end and the intervalve intercommunication of hose are kept away from to the delivery pipe.

By adopting the technical scheme, in rainy days, the sealing plate moves downwards under the action of the gravity of rainwater, so that the rainwater can enter the collecting box; when the weather is fine, the water on the sealing plate can be reduced, and the sealing plate can be reset under the action of the elastic component. After rainwater is collected in the collecting box, water can be supplied to the middle pipe.

Preferably, the elastic assembly comprises a plurality of sliding blocks, the sliding blocks are fixedly connected to the peripheral surface of the sealing plate, and the peripheral surface of the opening is provided with a plurality of sliding grooves which correspond to the sliding blocks one to one and are used for the sliding of the sliding blocks; the utility model discloses a slide block, including open-ended diapire, horizontal piece, slider, reset spring, horizontal piece, guide arm, slider, horizontal piece and slider, the diapire rigid coupling of open-ended has horizontal piece, the top rigid coupling of horizontal piece has the guide arm, the slider slides and connects in the guide arm, the reset spring has been cup jointed on the guide arm, reset spring's both ends rigid coupling respectively in the relative inboard of horizontal piece and slider.

By adopting the technical scheme, the sealing plate moves downwards to drive the sliding block to move, the sliding block moves to abut against the return spring, and the return spring is in a compressed state at the moment; when rainwater on the sealing plate is reduced, the sliding block drives the sealing plate to reset under the action of the reset spring; through the elastic component who sets up, be convenient for reset the closing plate.

Preferably, a filtering mechanism is arranged on the collecting box below the opening, a first through hole is formed in one side of the collecting box, a filtering plate is connected in the first through hole in a sliding mode, and the side wall of the filtering plate is abutted to the inner side wall of the collecting box; and the outer side wall of the collecting box is provided with a fixing component for fixing the filter plate.

Through adopting above-mentioned technical scheme, through the filter that sets up, be convenient for filter the rainwater that flows in from the opening.

Preferably, the fixing component comprises a fixing block fixedly connected to the outer side wall of the collecting box and a bolt connected to the fixing block in a sliding manner; one side of the filter plate is provided with a slot for inserting a bolt, the bolt is fixedly sleeved with a stop block and a fixed spring, and two ends of the fixed spring are fixedly connected to the fixed block and the opposite inner sides of the stop block respectively; and a limiting part for limiting the bolt is arranged on the outer side wall of the collecting box.

By adopting the technical scheme, when the filter plate needs to be installed, the bolt is limited through the limiting piece, the fixing spring is in a compressed state at the moment, then the filter plate is enabled to be abutted against the side wall of the collecting box by moving the filter plate, then the limiting piece is used for relieving the limiting of the bolt, and then the stop block drives the bolt to be inserted into the slot under the action of the fixing spring, so that the filter plate can be installed; through the fixed subassembly that sets up, be convenient for install the filter.

Preferably, the locating part includes the inserted bar of sliding connection in the fixed block top, the jack that is used for supplying the inserted bar to peg graft is seted up to the lateral wall of bolt.

Through adopting above-mentioned technical scheme, when needs carry on spacingly to the bolt, make the inserted bar peg graft with the jack through removing the inserted bar to alright carry on spacingly to the bolt.

Preferably, a second through hole is formed in one side of the middle pipe, a sealing ring is arranged in the second through hole, a moving plate is connected in the second through hole in a sliding manner, the moving plate can separate the water supply pipe from the middle pipe, a through hole is formed in the moving plate, and the through hole corresponds to the water supply pipe; the side wall of the solid fertilizer box is provided with a driving plate, the opposite inner sides of the driving plate and the movable plate are respectively provided with an inclined plane, and the two inclined planes are matched; and the middle pipe is provided with a reset assembly for driving the moving plate to reset.

By adopting the technical scheme, the annular scraper moves downwards to drive the moving plate to move downwards, and the driving plate drives the moving plate to move towards the second through hole under the action of the inclined surface, so that the water supply pipe is communicated with the intermediate pipe through the through hole, and water supply is facilitated for the intermediate pipe.

Preferably, the resetting component comprises a horizontal rod fixedly connected to one side of the middle pipe and a sliding sleeve connected to the horizontal rod in a sliding manner; the sliding sleeve is fixedly connected to one side of the moving plate, the horizontal rod is sleeved with the driving spring, and two ends of the driving spring are fixedly connected to the sliding sleeve and the inner side of the moving plate respectively.

By adopting the technical scheme, the movable plate moves to drive the sliding sleeve to move, the sliding sleeve moves to press the driving spring, and the driving spring is in a compressed state at the moment; when the driving plate is separated from the moving plate, the sliding sleeve drives the moving plate to reset under the action of the driving spring; through the reset assembly, the movable plate is convenient to drive to reset.

In summary, the present application has the following beneficial effects:

1. when the inner wall of the solid fertilizer box needs to be cleaned, the piston rod of the air cylinder drives the annular scraper to move, and the annular scraper can clean the inner wall of the solid fertilizer box by moving; the cleaning device is arranged, so that the inner wall of the solid fertilizer box can be cleaned conveniently;

2. in rainy days, the sealing plate moves downwards under the action of the gravity of rainwater, so that the rainwater can enter the collecting box; when the weather is fine, the water on the sealing plate can be reduced, and the sealing plate can be reset under the action of the elastic component. After rainwater is collected in the collecting box, water can be supplied to the intermediate pipe;

3. the annular scraper moves downwards to drive the moving plate to move downwards, and the driving plate drives the moving plate to move towards the second through hole under the action of the inclined surface, so that the water supply pipe is communicated with the intermediate pipe through the through hole, and water supply to the intermediate pipe is facilitated.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is a schematic view showing the structure of a water supply mechanism in an embodiment;

FIG. 3 is a partial sectional view showing the internal structure of the collection box in a highlighted manner in the embodiment;

FIG. 4 is a partial cross-sectional view of a highlighted mounting assembly of an embodiment;

fig. 5 is a partial cross-sectional view of a highlighted reduction assembly of an embodiment.

Description of reference numerals: 1. a frame; 11. a solid fertilizer can; 2. a cleaning device; 21. an annular scraper; 22. a cylinder; 23. a cavity; 24. a spray head; 3. an intermediate pipe; 31. a second through hole; 32. a seal ring; 33. moving the plate; 34. perforating; 35. a drive plate; 36. a bevel; 4. a reset assembly; 41. a horizontal bar; 42. a sliding sleeve; 43. a drive spring; 5. a collection box; 51. an opening; 52. a sealing plate; 53. a water outlet pipe; 54. a hose; 55. a water supply pipe; 6. an elastic component; 61. a slider; 62. a chute; 63. a horizontal block; 64. a guide bar; 65. a return spring; 7. a filtering mechanism; 71. a first through hole; 72. sealing sleeves; 73. a filter plate; 74. a support block; 8. a fixing assembly; 81. a fixed block; 82. a bolt; 83. a slot; 84. a stopper; 85. fixing the spring; 9. a limiting member; 91. inserting a rod; 92. and (4) inserting the jack.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that, as used in the following description, the terms "front," "rear," "left," "right," "upper," "lower," "bottom" and "top" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

The invention discloses a fertilizer spreader for a rice seedbed, which comprises a frame 1, a liquid fertilizer box and a solid fertilizer box 11 as shown in figure 1, wherein a cleaning device 2 is arranged on the frame 1.

As shown in fig. 1 and 2, the cleaning device 2 includes an annular scraper 21 sliding vertically and a plurality of air cylinders 22 vertically mounted on the top of the frame 1, a piston rod of the air cylinder 22 is vertically and downwardly fixedly connected with the top of the annular scraper 21, and the annular scraper 21 can abut against the inner wall of the solid fertilizer box 11. When the inner wall of the solid fertilizer box 11 needs to be cleaned, the piston rod of the air cylinder 22 drives the annular scraper 21 to move, and the annular scraper 21 moves to clean the inner wall of the solid fertilizer box 11; through the cleaning device 2, the inner wall of the solid fertilizer box 11 is convenient to clean.

As shown in fig. 1 and 2, a cavity 23 is arranged in the annular scraper 21, the bottom of the cavity 23 is communicated with a plurality of spray heads 24, and the spray heads 24 are arranged towards the inner wall of the solid fertilizer box 11; the middle of the annular scraper 21 is provided with a middle pipe 3, and both ends of the middle pipe 3 are communicated with the cavity 23; a water supply mechanism for supplying water to the intermediate pipe 3 is installed at the top of the frame 1. The middle pipe 3 is supplied with water through the water supply mechanism, and then the water flows through the middle pipe 3 and the cavity 23 in sequence and is sprayed to the inner wall of the solid fertilizer box 11 from the spray head 24, so that the inner wall of the solid fertilizer box 11 can be cleaned more thoroughly.

As shown in fig. 1 and 2, the water supply mechanism comprises a collection box 5 mounted on the top of the frame 1, the top of the collection box 5 is provided with a plurality of openings 51 communicated with the inner cavity of the collection box 5, in combination with fig. 3, the inner wall of the opening 51 is connected with a sealing plate 52 in a sliding manner along the vertical direction, and the inner side of the top of the collection box 5 is provided with an elastic component 6 for driving the sealing plate 52 to reset; one side of the collecting box 5 is communicated with a water outlet pipe 53, one end of the water outlet pipe 53, which is far away from the collecting box 5, is communicated with a hose 54, one end of the hose 54, which is far away from the water outlet pipe 53, is communicated with a water supply pipe 55, and one end of the water supply pipe 55, which is far away from the hose 54, is communicated with the middle pipe 3. In rainy days, the sealing plate 52 moves downwards under the gravity of the rainwater, thus enabling the rainwater to enter the collection box 5; when the weather is fine, the water on the sealing plate 52 is reduced, and the sealing plate 52 can be reset under the action of the elastic component 6. After rainwater is collected in the collecting box 5, water can be supplied to the intermediate pipe 3.

As shown in fig. 2 and 3, the elastic assembly 6 includes a plurality of sliding blocks 61, the sliding blocks 61 are fixedly connected to the peripheral surface of the sealing plate 52, and a plurality of sliding grooves 62 corresponding to the sliding blocks 61 one to one and used for the sliding blocks 61 to slide are formed on the peripheral surface of the opening 51; the bottom wall of opening 51 is fixedly connected with horizontal block 63, and the top of horizontal block 63 is fixedly connected with guide arm 64, and slider 61 slides and connects in guide arm 64, has cup jointed reset spring 65 on the guide arm 64, and reset spring 65's both ends rigid coupling respectively in horizontal block 63 and the relative inboard of slider 61. The sealing plate 52 moves downwards to drive the sliding block 61 to move, the sliding block 61 moves to press the return spring 65, and the return spring 65 is in a compressed state; when the rainwater on the sealing plate 52 is reduced, the sliding block 61 drives the sealing plate 52 to reset under the action of the reset spring 65; the elastic assembly 6 is arranged to facilitate the resetting of the sealing plate 52.

As shown in fig. 3 and 4, a filtering mechanism 7 is arranged on the collecting box 5 below the opening 51, a first through hole 71 is formed in one side of the collecting box 5, a filtering plate 73 is connected in the first through hole 71 in a sliding manner, and the side wall of the filtering plate 73 is abutted against the inner side wall of the collecting box 5; the outer side wall of the collection box 5 is provided with a fixing assembly 8 for fixing the filter plates 73. By the filter plate 73, the rainwater flowing from the opening 51 is filtered.

As shown in fig. 3 and 4, the fixing assembly 8 includes a fixing block 81 fixedly connected to the outer side wall of the collecting box 5 and a bolt 82 slidably connected to the fixing block 81; one side of the filter plate 73 is provided with a slot 83 for inserting the bolt 82, the bolt 82 is fixedly sleeved with a stopper 84 and a fixed spring 85, and two ends of the fixed spring 85 are fixedly connected to the fixed block 81 and the opposite inner sides of the stopper 84 respectively; the outer side wall of the collecting box 5 is provided with a limiting piece 9 for limiting the bolt 82. When the filter plate 73 needs to be installed, the bolt 82 is limited through the limiting piece 9, the fixing spring 85 is in a compressed state at the moment, then the filter plate 73 is enabled to be abutted against the side wall of the collecting box 5 through moving the filter plate 73, then the limiting piece 9 is used for removing the limiting of the bolt 82, then the stop block 84 drives the bolt 82 to be inserted into the slot 83 under the action of the fixing spring 85, and therefore the filter plate 73 can be installed; through the fixed subassembly 8 that sets up, be convenient for install filter 73.

As shown in fig. 3 and 4, the limiting member 9 includes an insertion rod 91 slidably connected to the top of the fixing block 81, and a side wall of the insertion pin 82 is provided with an insertion hole 92 for inserting the insertion rod 91. When the plug 82 needs to be limited, the plug rod 91 is plugged into the jack 92 by moving the plug rod 91, so that the plug 82 can be limited.

As shown in fig. 1 and 5, a second through hole 31 is formed in one side of the middle pipe 3, a sealing ring 32 is arranged in the second through hole 31, a moving plate 33 is connected in the second through hole 31 in a sliding manner, the moving plate 33 can separate the water supply pipe 55 from the middle pipe 3, a through hole 34 is formed in the moving plate 33, and the through hole 34 is arranged corresponding to the water supply pipe 55; a driving plate 35 is installed on the side wall of the solid fertilizer box 11, inclined planes 36 are respectively arranged on the opposite inner sides of the driving plate 35 and the moving plate 33, and the two inclined planes 36 are matched; the middle tube 3 is provided with a resetting component 4 for driving the moving plate 33 to reset. The downward movement of the annular scraper 21 drives the moving plate 33 to move downward, and the driving plate 35 drives the moving plate 33 to move toward the second through hole 31 under the action of the inclined surface 36, so that the water supply pipe 55 can be communicated with the intermediate pipe 3 through the through hole 34, and the water supply to the intermediate pipe 3 is facilitated.

As shown in fig. 1 and 5, the reposition assembly 4 comprises a horizontal rod 41 fixedly connected to one side of the middle tube 3 and a sliding sleeve 42 slidably connected to the horizontal rod 41; the sliding sleeve 42 is fixedly connected to one side of the moving plate 33, the horizontal rod 41 is sleeved with the driving spring 43, and two ends of the driving spring 43 are fixedly connected to the sliding sleeve 42 and the opposite inner sides of the moving plate 33 respectively. The moving plate 33 moves to drive the sliding sleeve 42 to move, the sliding sleeve 42 moves to press the driving spring 43, and the driving spring 43 is in a compressed state at the moment; when the driving plate 35 is separated from the moving plate 33, the sliding sleeve 42 drives the moving plate 33 to reset under the action of the driving spring 43; the reset assembly 4 is arranged to facilitate the reset of the driving moving plate 33.

The working principle is as follows: when the inner wall of the solid fertilizer box 11 needs to be cleaned, the piston rod of the air cylinder 22 drives the annular scraper 21 to move, and the annular scraper 21 moves to clean the inner wall of the solid fertilizer box 11; through the cleaning device 2, the inner wall of the solid fertilizer box 11 is convenient to clean.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a rice seedbed fertilizer spills applicator, includes frame (1), liquid fertilizer case and solid-state fertilizer case (11), its characterized in that: install cleaning device (2) on frame (1), cleaning device (2) include along vertical annular scraper blade (21) that slide and install in a plurality of cylinders (22) at frame (1) top, the vertical downward top fixed connection with annular scraper blade (21) of piston rod of cylinder (22), annular scraper blade (21) can the butt in the inner wall of solid-state fertilizer case (11).

2. The rice seedbed fertilizer applicator of claim 1, characterized in that: a cavity (23) is formed in the annular scraper (21), the bottom of the cavity (23) is communicated with a plurality of spray heads (24), and the spray heads (24) are arranged towards the inner wall of the solid fertilizer box (11); the middle of the annular scraper (21) is provided with a middle pipe (3), and two ends of the middle pipe (3) are communicated with the cavity (23); and a water supply mechanism for supplying water to the intermediate pipe (3) is installed at the top of the rack (1).

3. The rice seedbed fertilizer applicator of claim 1, characterized in that: the water supply mechanism comprises a collection box (5), the top of the collection box (5) is provided with a plurality of openings (51) communicated with the inner cavity of the collection box (5), the inner wall of each opening (51) is connected with a sealing plate (52) in a sliding mode along the vertical direction, and the inner side of the top of the collection box (5) is provided with an elastic assembly (6) used for driving the sealing plate (52) to reset; one side of the collection box (5) is communicated with a water outlet pipe (53), one end, far away from the collection box (5), of the water outlet pipe (53) is communicated with a hose (54), one end, far away from the water outlet pipe (53), of the hose (54) is communicated with a water supply pipe (55), and one end, far away from the hose (54), of the water supply pipe (55) is communicated with the middle pipe (3).

4. The rice seedbed fertilizer applicator of claim 3, characterized in that: the elastic assembly (6) comprises a plurality of sliding blocks (61), the sliding blocks (61) are fixedly connected to the peripheral surface of the sealing plate (52), and a plurality of sliding grooves (62) which correspond to the sliding blocks (61) one by one and are used for the sliding blocks (61) to slide are formed in the peripheral surface of the opening (51); the diapire rigid coupling of opening (51) has horizontal piece (63), the top rigid coupling of horizontal piece (63) has guide arm (64), slider (61) slide and connect in guide arm (64), reset spring (65) have been cup jointed on guide arm (64), the both ends of reset spring (65) rigid coupling respectively in the relative inboard of horizontal piece (63) and slider (61).

5. The rice seedbed fertilizer applicator of claim 3, characterized in that: a filtering mechanism (7) is arranged on the collecting box (5) below the opening (51), a first through hole (71) is formed in one side of the collecting box (5), a filtering plate (73) is connected in the first through hole (71) in a sliding manner, and the side wall of the filtering plate (73) is abutted against the inner side wall of the collecting box (5); the outer side wall of the collecting box (5) is provided with a fixing component (8) for fixing the filter plate (73).

6. The rice seedbed fertilizer applicator of claim 5, characterized in that: the fixed component (8) comprises a fixed block (81) fixedly connected to the outer side wall of the collecting box (5) and a bolt (82) connected to the fixed block (81) in a sliding manner; one side of the filter plate (73) is provided with a slot (83) for inserting a bolt (82), the bolt (82) is fixedly sleeved with a stop block (84) and a fixed spring (85), and two ends of the fixed spring (85) are fixedly connected to the fixed block (81) and the opposite inner side of the stop block (84) respectively; and a limiting part (9) used for limiting the bolt (82) is arranged on the outer side wall of the collecting box (5).

7. The rice seedbed fertilizer applicator of claim 6, characterized in that: the locating part (9) is connected in inserted bar (91) at fixed block (81) top including sliding, jack (92) that are used for supplying inserted bar (91) to peg graft are seted up to the lateral wall of bolt (82).

8. The rice seedbed fertilizer applicator of claim 2, characterized in that: a second through hole (31) is formed in one side of the middle pipe (3), a sealing ring (32) is arranged in the second through hole (31), a moving plate (33) is connected to the second through hole (31) in a sliding mode, the moving plate (33) can separate a water supply pipe (55) from the middle pipe (3), a through hole (34) is formed in the moving plate (33), and the through hole (34) is arranged corresponding to the water supply pipe (55); a driving plate (35) is installed on the side wall of the solid fertilizer box (11), inclined planes (36) are respectively arranged on the opposite inner sides of the driving plate (35) and the moving plate (33), and the two inclined planes (36) are matched; and the middle pipe (3) is provided with a reset assembly (4) for driving the moving plate (33) to reset.

9. The rice seedbed fertilizer applicator of claim 8, characterized in that: the reset assembly (4) comprises a horizontal rod (41) fixedly connected to one side of the middle pipe (3) and a sliding sleeve (42) connected to the horizontal rod (41) in a sliding manner; sliding sleeve (42) rigid coupling is in one side of movable plate (33), driving spring (43) has been cup jointed on horizon bar (41), the both ends of driving spring (43) rigid coupling respectively in the relative inboard of sliding sleeve (42) and movable plate (33).