CN111630967B

CN111630967B - Safe support device for maintenance of rotary cultivator

Info

Publication number: CN111630967B
Application number: CN202010532656.3A
Authority: CN
Inventors: 陈学雷; 陆祥
Original assignee: LIANYUNGANG CONTINENT AGRICULTURAL MACHINERY CO LTD
Current assignee: LIANYUNGANG CONTINENT AGRICULTURAL MACHINERY CO LTD
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2021-08-20
Anticipated expiration: 2040-06-12
Also published as: CN111630967A

Abstract

The invention discloses a safety supporting device for maintenance of a rotary cultivator, which comprises a bottom plate, wherein two sides of the bottom plate are connected with a stabilizing mechanism, the top of the bottom plate is fixedly connected with two jacks, the top of each jack is fixedly connected with a placing plate, the top of each placing plate is provided with a limiting frame, the top of each limiting frame is provided with a plurality of screw holes, the inner threads of each screw hole are connected with a first screw rod, the bottom of each first screw rod is fixedly connected with a pressing plate, the top surface of each placing plate is provided with a plurality of vent holes, the inside of each placing plate is provided with a second cavity, the two cavities are located between the first cavities, the bottom of each second cavity is provided with a vent channel, the bottom of each placing plate is provided with an air pump, and the input end of the air pump is connected with the vent channels. Has the advantages that: also can be very big avoid the rotary cultivator to appear skidding on strutting arrangement, the volume through the rotary cultivator adopts multiunit bearing structure's cooperation, reduces its limitation.

Description

Safe support device for maintenance of rotary cultivator

Technical Field

The invention relates to the technical field of rotary cultivators, in particular to a safety supporting device for maintenance of a rotary cultivator.

Background

The rotary cultivator is a cultivator which is matched with a tractor to complete the operations of ploughing and harrowing. The multifunctional soil-breaking machine has the characteristics of strong soil-breaking capacity, flat ground surface after ploughing and the like, is widely applied, can cut off stubbles buried below the ground surface, is convenient for the operation of the seeder, and provides a good seedbed for later sowing.

If the rotary cultivator is damaged or the blade is worn, the rotary cultivator needs to be maintained and maintained, and the rotary cultivator generally needs to be lifted by the power of a tractor to facilitate operation in the process of maintaining and replacing the blade, and if the tractor is operated by mistake or a power mechanism fails in the maintenance process, the rotary cultivator body is easy to fall suddenly to cause safety accidents, the safety supporting device for the rotary cultivator disclosed by the Chinese patent No. CN 205266153U can support the rotary cultivator, thereby facilitating the maintenance and maintenance operation of the rotary cultivator and avoiding the rotary cultivator from falling suddenly, but the existing rotary cultivator has different sizes, if the integral supporting device is adopted, the support operation of the rotary cultivator with different sizes is inconvenient, the limitation is large, but the split supporting device has poor integrity, and the condition of scattered frames can occur in the supporting process, cause the rotary cultivator to drop, in addition, the rotary cultivator fixed operation to the size of different volumes is troublesome, if the condition of skidding appears in the rotary cultivator and strutting arrangement junction in addition when supporting, also can cause the condition that the rotary cultivator dropped, causes the incident.

An effective solution to the problems in the related art has not been proposed yet.

Disclosure of Invention

The invention aims to provide a safe supporting device for maintenance of a rotary cultivator, which solves the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: a safety supporting device for maintenance of a rotary cultivator comprises a bottom plate, universal wheels are fixedly connected to four corners of the bottom plate, stabilizing mechanisms are connected to two sides of the bottom plate, two jacks are fixedly connected to the top of the bottom plate, a placing plate is fixedly connected to the tops of the jacks, a limiting frame is arranged on the top of the placing plate, a first cavity is formed in each of two sides of the inside of the placing plate, a second screw rod is arranged in each cavity and movably connected with the first cavity through a connecting mechanism, a first moving block is connected to the outer surface of the second screw rod in a threaded mode, the first moving block is located in the first cavity and matched with the first cavity, a moving groove is formed in the top of the first cavity, a second moving block is arranged in each moving groove, the bottom of the second moving block is fixedly connected with the first moving block, and the top of the second moving block is fixedly connected with the limiting frame, one end of the second screw rod is positioned outside the first cavity and connected with a synchronizing mechanism, the top of the limiting frame is provided with a plurality of screw holes, the inner threads of the screw holes are connected with the first screw rod, the bottom of the first screw rod is fixedly connected with a pressing plate, the top of the first screw rod is fixedly connected with a first rotating block, the top surface of the placing plate is provided with a plurality of air vents, the inside of the placing plate is provided with a second cavity, the second cavity is positioned between the first cavities, the second cavity is communicated with the air vents, the bottom of the second cavity is provided with an air vent channel, the bottom of the placing plate is provided with an air pump, the input end of the air pump is connected with the air vent channel, one side of the bottom plate, which is far away from the stabilizing mechanism, is movably connected with a movable shaft, one end of the movable shaft, which is far away from the bottom plate, is, a sleeve is sleeved on the outer surface of the rotary rod and close to the through hole, a movable opening is formed in the side wall of the sleeve, a sliding block is arranged in the movable opening, the sliding block is matched with the movable opening, a limiting mechanism is arranged between the sliding block and the movable opening, a connecting sleeve is fixedly connected to one end, far away from the rotary rod, of the sliding block, a movable block is arranged in the connecting sleeve, the movable block is attached to the inner wall of the connecting sleeve, a fixed rod is fixedly connected to one side, close to the sliding block, of the movable block, a second through hole is formed in the sliding block, one end, far away from the movable block, of the fixed rod penetrates through the second through hole and is located in the first through hole, a connecting rod is fixedly connected to one end, far away from the fixed rod, of the connecting sleeve is provided with a third through hole, one end, far away from the movable block, of the connecting rod penetrates through the third through hole and is located outside the connecting sleeve, the connecting rod is located the one end and the connecting block fixed connection in the adapter sleeve outside, the movable block with be connected with the spring between the adapter sleeve, the spring twines to be located the surface of connecting rod.

Further, firm mechanism includes connecting block two, thread bush, screw rod three and fixed block, the both sides fixedly connected with connecting block two of bottom plate, the inside fixedly connected with thread bush of connecting block two, the inside threaded connection of thread bush has screw rod three, the bottom fixedly connected with fixed block of screw rod three.

Further, stop gear includes stopper and spacing groove, the both sides fixedly connected with stopper of slider, the activity opening is close to the lateral wall of stopper is opened there is the spacing groove, the stopper be located the spacing inslot and with the spacing groove phase-match.

Furthermore, the connecting mechanism comprises supporting blocks and bearings, the two ends of the first cavity are fixedly connected with the supporting blocks, the bearings are fixedly connected inside the supporting blocks, and the inner walls of the bearings are fixedly connected with the second screw rods.

Further, synchronizing mechanism includes synchronizing wheel and hold-in range, the one end of screw rod two is located cavity one outside and surface fixedly connected with synchronizing wheel, connect through the hold-in range between the synchronizing wheel.

Furthermore, one end of the second screw rod, which is close to the synchronizing wheel, is fixedly connected with a second rotating block.

Furthermore, one side of the placing plate, which is far away from the rotating block II, is fixedly connected with a first mounting block, a first mounting hole is formed in the first mounting block, two sides of the placing plate, which are far away from the first mounting block and the rotating block II, are fixedly connected with a second mounting block, and a second mounting hole is formed in the second mounting block.

Furthermore, one side of the bottom plate, which is far away from the movable shaft, is fixedly connected with a third mounting block, and a third mounting hole is formed in the third mounting block.

Furthermore, the bottom of the placing plate is fixedly connected with a supporting frame, and the air pump is fixed in the supporting frame.

Furthermore, the bottom of the support frame is fixedly connected with a storage battery, and the storage battery is electrically connected with the air pump.

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

(1) the device can support the rotary cultivator and operate, the operating personnel of being convenient for carry out the operation of maintenance to the rotary cultivator, in addition, this strutting arrangement according to the suitable quantity of selection of rotary cultivator volume cooperates, make its support that can stabilize live the rotary cultivator, the condition of avoiding the rotary cultivator to drop takes place, the rotary cultivator of avoiding that the while also can be very big appears skidding on strutting arrangement, the volume through the rotary cultivator adopts multiunit bearing structure's cooperation, strutting arrangement's application range has also been enlarged, reduce its limitation.

(2) Firm mechanism can improve the steadiness of bottom plate, when supporting, further reduces the unstable condition of strutting arrangement, security when improving the support.

(3) The limiting mechanism plays a limiting role, and can avoid the sliding block from separating from the movable opening, so that the sliding block can effectively slide in the movable opening.

(4) The connecting mechanism can realize movable connection between the second screw rod and the inner part of the first cavity, the synchronous mechanism can realize synchronous rotation between the second screw rods, and the second rotary block is convenient to rotate the second screw rods.

(5) The first mounting block and the second mounting block play a role in connection, when the rotary cultivator is supported by the plurality of groups of supporting devices, the corresponding balance rods can penetrate through the first mounting holes in the first mounting block or the second mounting holes in the second mounting block, so that the supporting devices on the same plane can keep the same straight line, and the integrity of the plurality of groups of supporting devices is improved.

(6) The third mounting block and the third mounting hole are convenient for the corresponding balance rod to pass through, so that the supporting devices positioned on the two sides of the rotary cultivator can be kept on the same straight line, and the supporting integrity is also improved.

(7) The support frame plays the effect of supporting the air pump, is convenient for carry out fixed operation to the air pump, and the battery provides electric support for the air pump.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural view of a safety support device for maintenance of a rotary tiller according to an embodiment of the present invention;

FIG. 2 is a schematic view of an internal structure of a cavity I in a safety support device for maintenance of a rotary cultivator according to an embodiment of the present invention;

FIG. 3 is a schematic view of a connection structure of a vent hole and a cavity II in a safety support device for maintenance of a rotary cultivator according to an embodiment of the invention;

FIG. 4 is a schematic structural diagram of a placement plate in a safety support device for maintenance of a rotary cultivator according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a support block and a bearing in a safety support device for maintenance of a rotary cultivator according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a securing mechanism in a safety supporting device for maintenance of a rotary tiller according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of a first through hole and a sleeve in a safety support device for maintenance of a rotary cultivator according to an embodiment of the invention;

fig. 8 is a schematic view of the internal structure of the main connection sleeve of the safety support device for maintenance of the rotary cultivator according to the embodiment of the invention;

FIG. 9 is a schematic structural view of a limiting groove in a safety support device for maintenance of a rotary cultivator according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a limiting block in a safety support device for maintenance of a rotary cultivator according to an embodiment of the invention.

Reference numerals:

1. a base plate; 2. a universal wheel; 3. a jack; 4. placing the plate; 5. a limiting frame; 6. a first cavity; 7. a second screw; 8. moving a first block; 9. a movable groove; 10. a second moving block; 11. a screw hole; 12. a first screw rod; 13. pressing a plate; 14. rotating the first block; 15. a vent hole; 16. a second cavity; 17. a vent passage; 18. an air pump; 19. a movable shaft; 20. rotating the rod; 21. a first through hole; 22. a sleeve; 23. a movable opening; 24. a slider; 25. connecting sleeves; 26. a movable block; 27. fixing the rod; 28. a second through hole; 29. a connecting rod; 30. a third through hole; 31. a first connecting block; 32. a spring; 33. a second connecting block; 34. a threaded sleeve; 35. a third screw; 36. a fixed block; 37. a limiting block; 38. a limiting groove; 39. a support block; 40. a bearing; 41. a synchronizing wheel; 42. a synchronous belt; 43. rotating the second block; 44. a first mounting block; 45. a first mounting hole; 46. a second mounting block; 47. a second mounting hole; 48. mounting a third block; 49. a third mounting hole; 50. a support frame; 51. and (4) a storage battery.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all 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 application. The invention is further described below with reference to the accompanying drawings.

The first embodiment is as follows:

referring to fig. 1-10, the safety supporting device for maintenance of a rotary cultivator according to the embodiment of the present invention includes a bottom plate 1, universal wheels 2 are fixedly connected to four corners of the bottom plate 1, the universal wheels 2 are fixable universal wheels, stabilizing mechanisms are connected to two sides of the bottom plate 1, two jacks 3 are fixedly connected to the top of the bottom plate 1, a placing plate 4 is fixedly connected to the top of the jacks 3, a limiting frame 5 is arranged on the top of the placing plate 4, and the shape of the limiting frame 5 is similar to an L shape;

two sides of the inside of the placing plate 4 are provided with a first cavity 6, a second screw 7 is arranged inside the first cavity 6, the second screw 7 is movably connected with the first cavity 6 through a connecting mechanism, the connecting mechanism comprises a supporting block 39 and a bearing 40, two ends of the first cavity 6 are fixedly connected with the supporting block 39, the bearing 40 is fixedly connected inside the supporting block 39, and the inner wall of the bearing 40 is fixedly connected with the second screw 7;

the outer surface of the second screw rod 7 is in threaded connection with a first moving block 8, the first moving block 8 is located in the first cavity 6 and is matched with the first cavity 6, the top of the first cavity 6 is provided with a moving groove 9, a second moving block 10 is arranged inside the moving groove 9, the bottom of the second moving block 10 is fixedly connected with the first moving block 8, the top of the second moving block 10 is fixedly connected with the limiting frame 5, one end of the second screw rod 7 is located on the outer side of the first cavity 6 and is connected with a synchronizing mechanism, the top of the limiting frame 5 is provided with a plurality of screw holes 11, the inner threads of the screw holes 11 are connected with a first screw rod 12, the bottom of the first screw rod 12 is fixedly connected with a pressing plate 13, and the top of the first screw rod 12 is fixedly connected with a first rotating block 14;

the top surface of the placing plate 4 is provided with a plurality of vent holes 15, a cavity II 16 is formed inside the placing plate 4, the cavity II 16 is positioned between the cavity I6, the cavity II 16 is communicated with the vent holes 15, the bottom of the cavity II 16 is provided with a vent channel 17, the bottom of the placing plate 4 is provided with an air pump 18, the air pump 18 adopts an air suction pump, the input end of the air pump 18 is connected with the vent channel 17, the bottom of the placing plate 4 is fixedly connected with a support frame 50, the air pump 18 is fixed in the support frame 50, the support frame 50 plays a role of supporting the air pump, so that the air pump 18 is conveniently fixed, the bottom of the support frame 50 is fixedly connected with a storage battery 51, the storage battery 51 is electrically connected with the air pump 18, and the storage battery 51 provides electric power support for the air pump 18;

a movable shaft 19 is movably connected to one side, away from the stabilizing mechanism, of the bottom plate 1, a rotating rod 20 is connected to one end, away from the bottom plate 1, of the movable shaft 19, a plurality of through holes 21 are formed in the outer surface of one end, away from the movable shaft 19, of the rotating rod 20, a sleeve 22 is sleeved on the outer surface of the rotating rod 20 and close to the through holes 21, a movable opening 23 is formed in the side wall of the sleeve 22, a sliding block 24 is arranged in the movable opening 23, the sliding block 24 is matched with the movable opening 23, and a limiting mechanism is arranged between the sliding block 24 and the movable opening 23;

the slider 24 is kept away from the one end fixedly connected with adapter sleeve 25 of rotary rod 20, the inside of adapter sleeve 25 is equipped with movable block 26, movable block 26 with the inner wall laminating of adapter sleeve 25, movable block 26 is close to one side fixedly connected with dead lever 27 of slider 24, it has two through-holes 28 to open on the slider 24, dead lever 27 is kept away from the one end of movable block 26 runs through two through-holes 28 and is located the inside of through-hole 21, movable block 26 is kept away from the one end fixedly connected with connecting rod 29 of dead lever 27, the one end that the adapter sleeve 25 was kept away from slider 24 is opened there is three through-holes 30, the one end that the movable block 26 was kept away from to connecting rod 29 runs through three through-holes 30 and is located the adapter sleeve 25 outside, connecting rod 29 is located the one end in the adapter sleeve 25 outside and the first 31 fixed connection of connecting block, movable block 26 with be connected with spring 32 between the adapter sleeve 25, the spring 32 is wound around the outer surface of the connecting rod 29.

Example two:

referring to fig. 1 and 6, the stabilizing mechanism includes a second connecting block 33, a threaded sleeve 34, a third screw 35 and a fixing block 36, the second connecting block 33 is fixedly connected to two sides of the bottom plate 1, the threaded sleeve 34 is fixedly connected to the inside of the second connecting block 33, the third screw 35 is threadedly connected to the inside of the threaded sleeve 34, and the fixing block 36 is fixedly connected to the bottom of the third screw 35.

Example three:

referring to fig. 9-10, the limiting mechanism includes a limiting block 37 and a limiting groove 38, the limiting block 37 is fixedly connected to two sides of the sliding block 24, the side wall of the movable opening 23 close to the limiting block 37 is provided with the limiting groove 38, the limiting block 37 is located in the limiting groove 38 and is matched with the limiting groove 38, and the limiting mechanism plays a role in limiting, so that the sliding block 24 can be prevented from being separated from the movable opening 23, and the sliding block 24 can effectively slide in the movable opening 23.

Example four:

referring to fig. 4, the synchronizing mechanism includes a synchronizing wheel 41 and a synchronous belt 42, one end of the second screw rod 7 is located outside the first cavity 6, the synchronizing wheel 41 is fixedly connected to the outer surface of the second screw rod, the synchronizing wheels 41 are connected through the synchronous belt 42, the synchronizing mechanism can achieve synchronous rotation between the two second screw rods 7, one end of the second screw rod 7, which is close to the synchronizing wheel 41, is fixedly connected to a second rotating block 43, and the second rotating block 43 facilitates rotation operation of the second screw rod 7.

Example five:

referring to fig. 1-2, a first mounting block 44 is fixedly connected to a side of the placing plate 4 away from the second rotating block 43, a first mounting hole 45 is formed in the first mounting block 44, two sides of the placing plate 4 far away from the first mounting block 44 and the second rotating block 43 are fixedly connected with a second mounting block 46, a second mounting hole 47 is formed in the second mounting block 46, a third mounting block 48 is fixedly connected to one side of the bottom plate 1 far away from the movable shaft 19, the mounting block III 48 is internally provided with a mounting hole III 49, the mounting block I44 and the mounting block II 46 play a role in connection, when a plurality of groups of supporting devices support the rotary cultivator, the supporting devices in the same plane can be kept in the same straight line by corresponding balance rods passing through the mounting holes I45 on the mounting blocks I44 or the mounting holes II 47 on the mounting blocks II 46, so that the integrity of multiple groups of supporting devices is improved.

For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.

In practical application, several groups of supporting devices are needed according to the volume judgment of the rotary cultivator, then the supporting devices are arranged at the side wall of the rotary cultivator, the supporting devices are arranged at the two sides of the rotary cultivator, if the width of the rotary cultivator is small, the balancing rod directly penetrates through the third mounting hole 49, the supporting devices at the two sides of the rotary cultivator form a group, if the width of the rotary cultivator is large, the rotating rod 20 is rotated in advance, the rotating rod 20 is parallel to the bottom plate 1, the rotating rods 20 on the supporting devices at the two sides of the rotary cultivator are both positioned at the bottom of the rotary cultivator, then the first connecting block 31 is moved outwards, the port of the fixing rod 27 is separated from the first through hole 21, then the sleeve 22 is moved outwards, only one sleeve 22 is used, the ports of the two rotating rods 20 are both positioned in the sleeve 22, then the first connecting block 31 enables the sliding block 24 to slide in the movable opening 23, and due to the matching of the limiting block 37 and the limiting groove 38, the sliding block 24 cannot be separated from the movable opening 23, when the sliding block 24 moves to the first through hole 21, the first connecting block 31 is loosened, the spring 32 extends to push the movable block 26, the port of the fixed rod 27 is positioned in the first through hole 21, and at the moment, the sleeve 22 cannot be separated from the ports of the two rotating rods 20, so that the two supporting devices can be fixed by connecting the two rotating rods 20 together;

firstly, starting an air pump 18 to enable the top of a placing plate 4 to be in an adsorption state, then enabling a jack 3 to work, enabling the placing plate 4 to move upwards through the jack 3, enabling the placing plate 4 to be in contact with the side wall of the rotary cultivator, enabling the side wall of the rotary cultivator to be attached to the top of the placing plate 4 due to the adsorption effect of the air pump 18, after the rotary cultivator is supported by the placing plate 4, then rotating a rotating block II 43, enabling a screw rod II 7 to rotate, enabling a moving block I8 to move in a cavity II 16, enabling the moving block I8 to drive a moving block II 10 to move, enabling a limiting frame 5 to move, after the limiting frame 5 moves to the side wall of the rotary cultivator, then rotating a rotating block I14, enabling a screw rod I12 to move downwards, enabling a pressing plate 13 to be pressed out of the top of the side wall of the rotary cultivator, and limiting is carried out on the side wall of the rotary cultivator;

then, rotating the third screw rod 35 to enable the fixed block 36 at the bottom of the third screw rod 35 to be in contact with the ground, further improving the stability of the bottom plate 1, then enabling the balance rod to penetrate through a mounting hole-45 in the first mounting block 44 to be connected with the supporting devices on the two sides of the rotary cultivator to enable the balance rod to be located on the same straight line, and according to actual conditions, judging whether the first balance rod can penetrate through a second mounting hole 47 in a second mounting block 46 or not, and when the supporting devices are connected into a whole, performing maintenance operation on the rotary cultivator;

the device can support the operation to rotary cultivator, the operating personnel of being convenient for carries out the operation of maintenance to rotary cultivator, in addition, this strutting arrangement according to the suitable quantity of selection of rotary cultivator volume cooperates, make its support that can stabilize live the rotary cultivator, the condition of avoiding the rotary cultivator to drop takes place, the rotary cultivator of avoiding that the while also can be very big appears skidding on strutting arrangement, the cooperation that adopts multiunit bearing structure through the volume of rotary cultivator, strutting arrangement's application range has also been enlarged, reduce its limitation.

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

1. The safe supporting device for maintenance of the rotary cultivator is characterized by comprising a bottom plate (1), wherein four corners of the bottom plate (1) are fixedly connected with universal wheels (2), and two sides of the bottom plate (1) are connected with stabilizing mechanisms; the top of the bottom plate (1) is fixedly connected with two jacks (3), the top of each jack (3) is fixedly connected with a placing plate (4), the top of each placing plate (4) is provided with a limiting frame (5), two sides of the inside of each placing plate (4) are provided with a first cavity (6), a second screw rod (7) is arranged inside each first cavity (6), each second screw rod (7) is movably connected with the first cavity (6) through a connecting mechanism, the outer surface of each second screw rod (7) is in threaded connection with a first moving block (8), each first moving block (8) is located inside each first cavity (6) and matched with the corresponding first cavity (6), the top of each first cavity (6) is provided with a movable groove (9), each movable groove (9) is internally provided with a second moving block (10), and the bottom of each second moving block (10) is fixedly connected with the corresponding first moving block (8), the top of the moving block II (10) is fixedly connected with the limiting frame (5), one end of the screw rod II (7) is positioned at the outer side of the cavity I (6) and is connected with a synchronizing mechanism, the top of the limiting frame (5) is provided with a plurality of screw holes (11), the screw hole (11) is in threaded connection with the screw rod I (12), the bottom of the screw rod I (12) is fixedly connected with a pressing plate (13), the top of the screw rod I (12) is fixedly connected with a rotating block I (14), the top surface of the placing plate (4) is provided with a plurality of vent holes (15), the placing plate (4) is internally provided with a cavity II (16), the cavity II (16) is positioned between the cavity I (6), the cavity II (16) is communicated with the vent holes (15), the bottom of the cavity II (16) is provided with a vent channel (17), and the bottom of the placing plate (4) is provided with an air pump (18), the input end of air pump (18) with the passageway (17) of ventilating is connected, bottom plate (1) is kept away from one side swing joint of stabilizing mean has loose axle (19), loose axle (19) are kept away from the one end of bottom plate (1) is connected with rotary rod (20), rotary rod (20) are kept away from the one end surface of loose axle (19) is opened there are a plurality of through-hole one (21), the surface of rotary rod (20) just is close to through-hole one (21) department cover has sleeve (22), the lateral wall of sleeve (22) is opened there is activity opening (23), be equipped with slider (24) in activity opening (23), slider (24) with activity opening (23) phase-match, just slider (24) with be equipped with stop gear between activity opening (23), slider (24) are kept away from the one end fixedly connected with adapter sleeve (25) of rotary rod (20), the inside of adapter sleeve (25) is equipped with movable block (26), movable block (26) with the inner wall laminating of adapter sleeve (25), movable block (26) are close to one side fixedly connected with dead lever (27) of slider (24), it has through-hole two (28) to open on slider (24), dead lever (27) are kept away from the one end of movable block (26) is run through-hole two (28) and is located the inside of through-hole (21), the one end fixedly connected with connecting rod (29) of dead lever (27) are kept away from in movable block (26), the one end that slider (24) were kept away from in adapter sleeve (25) is opened there is through-hole three (30), the one end that movable block (26) was kept away from in connecting rod (29) is run through-hole three (30) and is located the adapter sleeve (25) outside, connecting rod (29) are located the one end in the adapter sleeve (25) outside and connecting block (31) fixed connection, the utility model discloses a fixing device for connecting rod, including bottom plate (1), movable block (26), connecting sleeve (25), spring (32) twine and locate the surface of connecting rod (29), firm mechanism includes connecting block two (33), thread bush (34), three (35) of screw rod and fixed block (36), the both sides fixedly connected with connecting block two (33) of bottom plate (1), the inside fixedly connected with thread bush (34) of connecting block two (33), the inside threaded connection of thread bush (34) has three (35) of screw rod, the bottom fixedly connected with fixed block (36) of three (35) of screw rod.

2. The safety supporting device for maintenance of a rotary cultivator according to claim 1, wherein the limiting mechanism comprises a limiting block (37) and a limiting groove (38), the limiting block (37) is fixedly connected to two sides of the sliding block (24), a limiting groove (38) is formed in a side wall of the movable opening (23) close to the limiting block (37), and the limiting block (37) is located in the limiting groove (38) and matched with the limiting groove (38).

3. The safety supporting device for maintenance of the rotary cultivator as claimed in claim 1, wherein the connecting mechanism comprises a supporting block (39) and a bearing (40), the supporting block (39) is fixedly connected to two ends of the first cavity (6), the bearing (40) is fixedly connected to the inside of the supporting block (39), and the inner wall of the bearing (40) is fixedly connected to the second screw rod (7).

4. The safety supporting device for maintenance of the rotary cultivator as claimed in claim 1, wherein the synchronizing mechanism comprises a synchronizing wheel (41) and a synchronizing belt (42), one end of the second screw rod (7) is located outside the first cavity (6), the synchronizing wheel (41) is fixedly connected to the outer surface of the second screw rod, and the synchronizing wheels (41) are connected through the synchronizing belt (42).

5. The safety supporting device for maintenance of a rotary cultivator as claimed in claim 4, wherein a second rotating block (43) is fixedly connected to one end of the second screw rod (7) close to the synchronizing wheel (41).

6. The safety supporting device for maintenance of the rotary tiller according to claim 5, wherein a first mounting block (44) is fixedly connected to one side of the placing plate (4) far away from the second rotating block (43), a first mounting hole (45) is formed in the first mounting block (44), second mounting blocks (46) are fixedly connected to two sides of the placing plate (4) far away from the first mounting block (44) and the second rotating block (43), and a second mounting hole (47) is formed in the second mounting block (46).

7. The safety support device for maintenance of a rotary cultivator as claimed in claim 1, wherein a third mounting block (48) is fixedly connected to one side of the bottom plate (1) far away from the movable shaft (19), and a third mounting hole (49) is formed in the third mounting block (48).

8. The safety support device for maintenance of a rotary cultivator as claimed in claim 1, wherein a support frame (50) is fixedly connected to the bottom of the placing plate (4), and the air pump (18) is fixed in the support frame (50).

9. The safety support device for maintenance of a rotary tiller according to claim 8, wherein a storage battery (51) is fixedly connected to the bottom of the support frame (50), and the storage battery (51) is electrically connected to the air pump (18).