Movable seedbed capable of being quickly leveled

Abstract

The invention relates to the technical field of seedbeds, and particularly discloses a rapidly-leveled movable seedbed which comprises a supporting frame and a seedbed frame. The seedbed frame is horizontally installed on the top face of the supporting frame. Grooves are formed in the bottom surfaces of supporting legs at four corners of the supporting frame; a hydraulic cylinder is arranged on the inner side wall of the top end of each groove; piston rods are arranged at the output ends of the hydraulic cylinders; the bottom ends of the piston rods are fixedly connected with supporting plates capable of extending out of the bottoms of the grooves; a sensing control mechanism is arranged on the bottom surface of the seedbed frame; the sensing control mechanism can detect the levelness of the seedbed frame and control the hydraulic cylinder to drive the piston rod to stretch; the sensing control mechanism can detect the levelness of the supporting frame and control the four hydraulic cylinders to drive the piston rods to move, rapid leveling of the supporting frame is achieved by controlling the extension lengths of the four piston rods, and the trouble of leveling the supporting frame in a manual heightening mode is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of seedbeds, in particular to a mobile seedbed that can be quickly leveled. Background Art

[0002] The mobile seedbed is a modern agricultural planting equipment. It can be adjusted in position under different environmental conditions according to the growth needs of crops, breaking the limitations of traditional fixed seedbeds. The mobile seedbed can realize the zoning management of crop planting, facilitate fertilization, watering, pruning and other operations, and reduce labor intensity. In addition, it can be adjusted in position according to the crop's demand for light, so that the plants can fully receive sunlight and improve photosynthesis efficiency.

[0003] In the prior art, the ground on which the seedling bed frame is placed may be uneven. When the seedling bed frame is installed on the support frame, the support frame needs to be leveled. Otherwise, the seedling bed frame cannot remain stable on the horizontal plane and will slide by itself, affecting the normal use of the seedling bed. When leveling the support frame, the frame is usually leveled by raising it, etc., but this method is not only inefficient but also has poor leveling accuracy. Summary of the invention

[0004] The present application provides a mobile seedling bed that can be quickly leveled, which can conveniently achieve fast and accurate leveling of a support frame.

[0005] The present application provides a mobile seedbed that can be quickly leveled, which adopts the following technical solution: A mobile seedling bed that can be quickly leveled comprises a support frame and a seedling bed frame; the seedling bed frame is horizontally installed on the top surface of the support frame; grooves are provided on the bottom surfaces of the four corner legs of the support frame; a hydraulic cylinder is provided on the inner side wall of the top end of each groove; a piston rod is provided at the output end of the hydraulic cylinder; a support plate that can extend out of the bottom of the groove is fixedly connected to the bottom of the piston rod; a sensor control mechanism is provided on the bottom surface of the seedling bed frame; the sensor control mechanism can detect the horizontality of the seedling bed frame and control the hydraulic cylinder to drive the piston rod to extend and retract.

[0006] By adopting the above technical scheme, when the support frame placed on the ground is uneven and tilted, the seedling bed frame arranged on the top of the support frame will also tilt. The sensor control mechanism arranged on the bottom surface of the seedling bed frame will detect the horizontality of the seedling bed frame and transmit instructions to the hydraulic cylinder, controlling the four hydraulic cylinders to drive the piston rods to move, prompting the support plates to extend out of the grooves to support the support frame. By controlling the extension length of the four piston rods, the purpose of quickly leveling the support frame can be achieved, reducing the trouble of leveling the support frame by artificial raising, and improving the efficiency and accuracy of the support frame leveling work.

[0007] Preferably, the sensing control mechanism includes an inclination sensor and a controller; the inclination sensor is installed on the bottom surface of the seedling bed frame, and the inclination sensor can detect the horizontality of the seedling bed frame; the controller is installed on the bottom surface of the seedling bed frame, the controller is electrically connected to the hydraulic cylinder, and the controller controls the extension and retraction of the output end of the hydraulic cylinder; the inclination sensor is electrically connected to the controller; each of the hydraulic cylinders is provided with a laser ranging sensor at the end close to the piston rod that can detect the extension and retraction status of the piston rod; the laser ranging sensor is electrically connected to the controller.

[0008] By adopting the above technical solution, the inclination sensor can monitor the horizontality of the seedling bed frame in real time and transmit the monitoring data to the controller. When the inclination sensor detects that the seedling bed frame is tilted, the controller will control the four hydraulic cylinders to drive the piston rod to extend and retract for leveling. The laser ranging sensor can measure the extension and retraction status of the piston rod in real time and feed back the measurement results to the controller, so as to enable the controller to accurately control the hydraulic cylinder, thereby realizing fast and accurate leveling of the support frame.

[0009] Preferably, the seedling bed frame is horizontally slidably arranged on the top surface of the support frame; the bottom surface of the seedling bed frame is fixedly connected with a rack arranged along the sliding direction of the seedling bed frame; and the support frame is provided with a driving mechanism that can drive the rack to move.

[0010] By adopting the above technical scheme, in order to facilitate the walking of staff during the use of the seedbeds, aisles are left between adjacent seedbeds. However, the existence of the aisle will occupy part of the indoor area, thereby reducing the utilization rate of the indoor space. Therefore, when the staff does not need to walk through the aisle, the driving mechanism set on the support frame can drive the rack to move, prompting the seedbed frame to move left and right, so that the adjacent seedbed frames are fitted into the closed aisle, so that more seedbeds can be placed indoors, thereby improving the utilization rate of the indoor space. When the staff needs to walk through the aisle, the driving mechanism will drive the seedbed frame to move back and reset, so that an aisle is formed between the two adjacent seedbeds in the working position, which is convenient for the staff to walk and work.

[0011] Preferably, the driving mechanism includes a first rotating shaft; the first rotating shaft is rotatably connected to a support frame at the bottom of the rack, and a gear is coaxially fixedly connected to the outer wall of the first rotating shaft close to the rack; the gear is meshed with the rack; a handwheel is coaxially fixedly connected to one end of the first rotating shaft.

[0012] By adopting the above technical solution, when the seedling bed frame needs to be moved, the staff drives the first rotating shaft and the gear to rotate by rotating the hand wheel. During the rotation process, the gear drives the seedling bed frame to move by meshing with the rack, so that the staff can adjust the seedling bed frame to a suitable position according to work needs.

[0013] Preferably, the bottom surfaces at both ends of the seedling bed frame in the length direction are provided with dovetail grooves arranged along the sliding direction of the seedling bed frame; the top surfaces of the four corner legs of the support frame are fixedly connected to limiting blocks; the top ends of the four limiting blocks are respectively inserted into the two dovetail grooves, and the top ends of the limiting blocks are slidably matched with the inner walls of the dovetail grooves.

[0014] By adopting the above technical solution, during the movement of the seedling bed frame, the limit block will slide along the inner wall of the dovetail groove, and the movement of the seedling bed frame will be guided and limited through the cooperation between the limit block and the inner wall of the dovetail groove, thereby reducing the possibility of the seedling bed frame shifting during the movement and ensuring the stability of the seedling bed frame during the movement.

[0015] Preferably, the support frame is rotatably connected to a second rotating shaft located on one side of the first rotating shaft; the second rotating shaft is coaxial with the first rotating shaft, and cleaning brushes are fixedly connected to both ends of the second rotating shaft; the cleaning brush is in contact with the teeth of the gear; and a transmission assembly is provided at one end of the second rotating shaft, which can drive the second rotating shaft to rotate by the first rotating shaft.

[0016] By adopting the above technical solution, in the process of rotating the first shaft to drive the seedling bed frame to move through the meshing cooperation of the gear and the rack, the first shaft drives the second shaft and the cleaning brush to rotate through the transmission assembly. The cleaning brush cleans the gear teeth during rotation, reducing the possibility of impurities adhering to the gear teeth, thereby reducing the wear of the gear and the rack during the meshing process and increasing the service life of the gear.

[0017] Preferably, the transmission assembly includes a first pulley, a second pulley and a belt; the first pulley is coaxially fixed to the outer wall of one end of the first rotating shaft; the second pulley is coaxially fixed to the outer wall of the end of the second rotating shaft close to the first pulley; the belt is sleeved on the outside of the first pulley and the second pulley, and the belt links the first pulley and the second pulley.

[0018] By adopting the above technical solution, under the cooperation of the first pulley, the second pulley and the belt, the first rotating shaft drives the second rotating shaft to rotate during the rotation process, thereby realizing the transmission of kinetic energy during the rotation of the first rotating shaft.

[0019] Preferably, a blow pipe located on one side of the rack is fixedly connected to the bottom surface of the seedling bed frame; a plurality of nozzles connected to the blow pipe are fixedly connected to the outer wall of the blow pipe; the nozzles are arranged toward the rack; and a blow mechanism capable of blowing air back and forth into the blow pipe is arranged on the support frame.

[0020] By adopting the above technical solution, during the meshing process of the gear and the rack, the blowing mechanism can reciprocally blow gas into the blowing pipe and spray the gas out through the nozzle. The gas sprayed from the nozzle can be used to clean the rack, thereby reducing the possibility of dust and impurities adhering to the rack, thereby reducing the wear of the rack during the meshing process of the gear and the rack and increasing the service life of the rack.

[0021] Preferably, the blowing mechanism includes a concave shell, a pressing block, an airbag and a cam; the concave shell is fixedly connected to the outer wall of one end of the support frame, and the concave shell is located at the bottom of the first rotating shaft; the pressing block is slidably connected to the inner wall of the concave shell, the bottom surface of the pressing block is connected to the inner wall of the bottom end of the concave shell by a spring, and the top of the pressing block extends to the top of the concave shell and is provided with an arc surface; the airbag is arranged inside the concave shell, the airbag is in contact with the bottom surface of the pressing block, and a ventilation pipe is connected to the airbag; the end of the ventilation pipe away from the airbag is connected to the blowing pipe, and the ventilation pipe connects the airbag and the blowing pipe; the cam is fixedly connected to the outer wall of the end of the first rotating shaft close to the pressing block, and the cam can contact and cooperate with the arc surface at the top of the pressing block.

[0022] By adopting the above technical scheme, in the process of rotating the first rotating shaft to drive the seedling bed frame to move, the cam will contact with the arc surface at the top of the pressing block. Under the cooperation of the cam and the arc surface, the cam will prompt the pressing block to move down to compress the spring and squeeze the air bag. After the air bag is compressed, the gas inside the air bag is transported to the blowing pipe through the ventilation pipe; when the cam loses contact with the arc surface at the top of the pressing block, the pressing block slides up and resets under the elastic force of the spring, and the air bag returns air, so that in the process of the cam reciprocatingly squeezing the pressing block, the air bag reciprocates and blows air into the blowing pipe, so that the nozzle can reciprocate and clean the rack.

[0023] Preferably, a rubber pad is fixedly connected to the bottom surface of the support plate.

[0024] By adopting the above technical solution, when the hydraulic cylinder drives the piston rod to extend out of the groove to level the support frame, the support plate will contact the ground to support the support frame. The provision of the rubber pad increases the friction between the support plate and the ground, plays an anti-slip effect, and improves the stability of the support frame after leveling.

[0025] In summary, this application has the following beneficial effects: 1. When the support frame and the seedling bed frame are tilted after being placed, the sensor control mechanism will detect the horizontality of the seedling bed frame and transmit instructions to the hydraulic cylinders to control the four hydraulic cylinders to drive the piston rods to move, so that the support plates extend out of the grooves to support the support frame. By controlling the extension length of the four piston rods, the support frame can be quickly leveled, reducing the trouble of leveling the support frame by artificial padding, and improving the efficiency and accuracy of the support frame leveling work; 2. When the staff needs to move the seedling bed frame to make the adjacent seedling bed frames fit together to improve the space utilization rate, the staff can drive the rack to move through the driving mechanism to make the seedling bed frame move left and right so that the adjacent seedling bed frames fit together to close the aisle. When the staff needs to walk through the aisle, the driving mechanism drives the seedling bed frame to move back and reset, so that an aisle is formed between the two adjacent seedling beds at the working position, which is convenient for the staff to walk and work; 3. When the hydraulic cylinder drives the piston rod to extend out of the groove to level the support frame, the support plate will contact the ground to support the support frame. The setting of the rubber pad increases the friction between the support plate and the ground, plays an anti-slip effect, and improves the stability of the support frame after leveling. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of a mobile seedbed that can be quickly leveled; Figure 2 It is a schematic diagram of the coordination structure of the support frame, the seedling bed frame and the sensor control mechanism in this application; Figure 3 It is a schematic diagram of the matching structure of the hydraulic cylinder, piston rod and support plate in this application; Figure 4 It is a schematic diagram of the coordination structure of the support frame, seedling bed frame, rack and driving mechanism in this application; Figure 5 It is a schematic diagram of the matching structure of the first rotating shaft, the transmission assembly and the second rotating shaft in the present application; Figure 6 It is a schematic diagram of the coordinated structure of the support frame, the seedling bed frame and the spraying mechanism in this application; Figure 7 It is a structural schematic diagram of the blowing mechanism in this application.

[0027] Explanation of the reference numerals: 1. support frame; 11. groove; 12. limit block; 2. seedling bed frame; 21. rack; 22. dovetail groove; 23. blow pipe; 231. nozzle; 3. hydraulic cylinder; 31. piston rod; 32. support plate; 321. rubber pad; 4. sensing control mechanism; 41. tilt sensor; 42. controller; 43. laser ranging sensor; 5. driving mechanism; 51. first rotating shaft; 52. gear; 53. hand wheel; 6. second rotating shaft; 61. cleaning brush; 62. transmission assembly; 621. first pulley; 622. second pulley; 623. belt; 7. blow mechanism; 71. concave shell; 72. pressure block; 73. air bag; 74. cam; 75. spring; 76. vent pipe. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings. The same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper", "lower", "bottom" and "top" used in the following description refer to directions in the accompanying drawings, and the terms "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0029] The present invention discloses a mobile seedbed which can be quickly leveled. Figure 1 , Figure 2 and Figure 3 As shown, it includes a support frame 1, a seedling bed frame 2, four hydraulic cylinders 3 and a sensor control mechanism 4. The seedling bed frame 2 is horizontally installed on the top surface of the support frame 1, and grooves 11 are provided on the bottom surfaces of the four corner legs of the support frame 1; the four hydraulic cylinders 3 are respectively vertically installed on the inner side walls of the top ends of the four grooves 11, and a piston rod 31 pointing vertically downward is provided at the output end of each hydraulic cylinder 3, and a support plate 32 located in the groove 11 is fixedly connected to the bottom end of each piston rod 31, and a rubber pad 321 is fixedly connected to the bottom surface of each support plate 32. The hydraulic cylinder 3 can drive the piston rod 31 to extend and retract to cause the support plate 32 to extend out of the bottom of the groove 11 to support the support frame 1. The sensor control mechanism 4 is arranged on the bottom surface of the seedling bed frame 2, and the sensor control mechanism 4 can detect the horizontality of the seedling bed frame 2 and control the four hydraulic cylinders 3 to drive the piston rod 31 to extend and retract.

[0030] When the ground on which the support frame 1 is placed is uneven, causing the support frame 1 and the seedling bed frame 2 to tilt, the sensor control mechanism 4 detects the horizontality of the seedling bed frame 2 and transmits instructions to the hydraulic cylinder 3 to drive the piston rod 31 to move, prompting the piston rod 31 to drive the support plate 32 to extend out of the groove 11 to support the support frame 1. By controlling the extension length of the four piston rods 31, the support frame 1 can be quickly leveled, reducing the trouble of leveling by manual paving. The setting of the rubber pad 321 increases the friction between the support plate 32 and the bottom surface, thereby improving the stability of the support frame 1 after leveling.

[0031] like Figure 2 and Figure 3 As shown, the sensing control mechanism 4 includes a tilt sensor 41, a controller 42 and four laser ranging sensors 43. The tilt sensor 41 is horizontally installed on the bottom surface of the seedling bed frame 2. The tilt sensor 41 can detect the horizontality of the seedling bed frame 2 in real time. The controller 42 is installed on the bottom surface of the seedling bed frame 2. The output end of the controller 42 is electrically connected to the input ends of the four hydraulic cylinders 3. The controller 42 controls the output ends of the four hydraulic cylinders 3 to extend and retract. The output end of the tilt sensor 41 is electrically connected to the input end of the controller 42. The four laser ranging sensors 43 are respectively installed on the ends of the four hydraulic cylinders 3 close to the piston rod 31. The laser sensor can detect the extension and retraction status of the piston rod 31. The output ends of the four laser ranging sensors 43 are electrically connected to the input end of the controller 42.

[0032] When the inclination sensor 41 detects that the seedling bed frame 2 is tilted, the inclination sensor 41 monitors the horizontality of the seedling bed frame 2 and transmits the monitoring data to the controller 42, so that the controller 42 controls the four hydraulic cylinders 3 to drive the piston rod 31 to extend and retract for leveling. The laser ranging sensor 43 can measure the extension and retraction status of the piston rod 31 in real time and feed back the measurement results to the controller 42, so as to realize the precise control of the hydraulic cylinder 3 by the controller 42, thereby realizing fast and precise leveling of the support frame 1.

[0033] like Figure 1 and Figure 4 As shown, the seedling bed frame 2 is horizontally slidably arranged on the top surface of the support frame 1, and the bottom surface of the seedling bed frame 2 is provided with a pair of dovetail grooves 22 arranged along the width direction of the support frame 1, and the pair of dovetail grooves 22 are respectively located at the two end positions of the bottom surface of the seedling bed frame 2 along the length direction, and the top surfaces of the four corner legs of the support frame 1 are fixedly connected to the limit blocks 12, and the top ends of the four limit blocks 12 are respectively inserted into the two dovetail grooves 22, and the top ends of the limit blocks 12 are in a dovetail shape that slides with the inner walls of the dovetail grooves 22. A pair of racks 21 arranged along the width direction of the support frame 1 are fixedly connected to the bottom surface of the seedling bed frame 2, and the two racks 21 are respectively located at the bottom surface of the seedling bed frame 2 near the two dovetail grooves 22, and a driving mechanism 5 is provided on the support frame 1 to drive the two racks 21 to move along the width direction of the support frame 1.

[0034] When the staff needs to move the seedling bed frame 2 to make the adjacent seedling bed frames 2 fit together to improve the space utilization rate, the staff can drive the rack 21 to move through the driving mechanism 5, prompting the seedling bed frame 2 to move left and right so that the adjacent seedling bed frames 2 can fit together to close the aisle. When the staff needs to walk through the aisle, the driving mechanism 5 drives the seedling bed frame 2 to move back and reset, so that an aisle is formed between the two adjacent seedling beds at the working position, which is convenient for the staff to walk and work.

[0035] like Figure 4 and Figure 5 As shown, the driving mechanism 5 includes a first rotating shaft 51, a pair of gears 52 and a handwheel 53. The first rotating shaft 51 is rotatably connected to the top surface of the support frame 1 at the bottom of the two racks 21. The first rotating shaft 51 is arranged along the length direction of the seedling bed frame 2. The pair of gears 52 are coaxially fixed to the outer side walls at both ends of the first rotating shaft 51. The two gears 52 are located at the bottom of the two racks 21 and are respectively meshed with the two racks 21. The handwheel 53 is coaxially fixed to the end surface of one end of the first rotating shaft 51.

[0036] When the seedling bed frame 2 needs to be moved left and right to adjust the position of the seedling bed frame 2, the rotating hand wheel 53 drives the first rotating shaft 51 and the gear 52 to rotate. The left and right movement of the seedling bed frame 2 can be conveniently achieved through the engagement of the gear 52 and the rack 21, so that the staff can adjust the seedling bed frame 2 to a suitable position according to work needs.

[0037] like Figure 4 and Figure 5As shown, a second rotating shaft 6 located on one side of the first rotating shaft 51 is rotatably connected to the support frame 1, and the second rotating shaft 6 is coaxial with the first rotating shaft 51. A pair of cleaning brushes 61 located at both ends of the second rotating shaft 6 are coaxially fixedly connected on the outer wall of the second rotating shaft 6, and the two cleaning brushes 61 are respectively in contact with the gear teeth of the two gears 52. A transmission component 62 is also provided at one end of the second rotating shaft 6, which can enable the first rotating shaft 51 to drive the second rotating shaft 6 to rotate. The transmission component 62 includes a first pulley 621, a second pulley 622 and a belt 623. The first pulley 621 is coaxially fixed to the outer wall of one end of the first rotating shaft 51, and the second pulley 622 is coaxially fixed to the outer wall of the end of the second rotating shaft 6 close to the first pulley 621. The belt 623 is tensioned and sleeved on the outside of the first pulley 621 and the second pulley 622, and the belt 623 links the first rotating shaft 51 and the second rotating shaft 6.

[0038] During the rotation of the first rotating shaft 51, the first rotating shaft 51 drives the second rotating shaft 6 and the cleaning brush 61 to rotate through the cooperation of the first pulley 621, the second pulley 622 and the belt 623. The rotating action of the cleaning brush 61 cleans the gear teeth of the gear 52, reducing the possibility of dust and impurities adhering to the gear 52, thereby reducing the degree of wear between the gear 52 and the rack 21 during the meshing process and increasing the service life of the gear 52.

[0039] like Figure 1 , Figure 6 and Figure 7 As shown, a pair of blow pipes 23 arranged along the length direction of the rack 21 are fixedly connected to the bottom surface of the seedling bed frame 2, and the two blow pipes 23 are located at positions close to the two racks 21 respectively. A plurality of nozzles 231 connected to the blow pipe 23 are fixedly connected to the outer wall of each blow pipe 23. The plurality of nozzles 231 are arranged at intervals along the length direction of the blow pipe 23 and are all horizontally facing the rack 21. A pair of blow mechanisms 7 are provided on the outer wall of the support frame 1, and the pair of blow mechanisms 7 can respectively blow air back and forth into the two blow pipes 23.

[0040] The gas can be reciprocally sprayed into the spray pipe 23 through the spray mechanism 7. When the gas is sprayed out through the nozzle 231, the rack 21 is sprayed and cleaned, thereby reducing the possibility of dust and impurities adhering to the rack 21, reducing the wear of the rack 21 during the meshing process of the gear 52 and the rack 21, and increasing the service life of the rack 21.

[0041] like Figure 6 and Figure 7As shown, the blowing mechanism 7 includes a concave shell 71, a pressing block 72, an air bag 73 and a cam 74. The concave shell 71 is vertically fixed to the outer side wall of the end of the support frame 1 in the length direction. The concave shell 71 is located at the bottom of the first rotating shaft 51. The pressing block 72 is slidably connected to the inner side wall of the concave shell 71. A spring 75 is fixed to the bottom surface of the pressing block 72. The top of the pressing block 72 extends to the top of the concave shell 71 and is provided with an arc surface. The end of the spring 75 away from the pressing block 72 is fixed to the concave shell 71. On the inner side wall of the bottom end, the airbag 73 is arranged in the concave shell 71, the airbag 73 contacts the bottom surface of the pressing block 72 connected with the spring 75, the airbag 73 is connected with a vent pipe 76, the end of the vent pipe 76 away from the airbag 73 is fixedly connected to the outer side wall of the blowing pipe 23, the vent pipe 76 connects the airbag 73 and the blowing pipe 23, the cam 74 is fixedly connected to the outer side wall of the end of the first rotating shaft 51 close to the pressing block 72, and the cam 74 contacts and cooperates with the arc surface of the top end of the pressing block 72.

[0042] The first rotating shaft 51 will drive the cam 74 to rotate during the rotation process. The cam 74 will contact the top arc surface of the pressure block 72 during the rotation process and push the pressure block 72 to move downward to compress the spring 75 and squeeze the airbag 73. After the airbag 73 is compressed, the internal gas of the airbag will enter the blowing pipe 23 through the ventilation pipe 76. When the cam 74 loses contact with the top arc surface of the pressure block 72, the pressure block 72 slides up and resets under the elastic force of the spring 75, and the airbag 73 returns air, so that the airbag 73 can blow reciprocatingly into the blowing pipe 23 during the process of the cam 74 reciprocatingly squeezing the pressure block 72.

[0043] Working principle: When the indoor ground is uneven and causes the support frame 1 placed on the ground to tilt, the inclination sensor 41 arranged on the bottom surface of the seedling bed frame 2 detects the horizontality of the seedling bed frame 2 and transmits the monitoring data to the controller 42. The controller 42 controls the four hydraulic cylinders 3 to drive the piston rod 31 to extend out of the bottom of the support frame 1, so that the support plate 32 supports the support frame 1. When the hydraulic cylinder 3 drives the piston rod 31 to extend and retract, the laser ranging sensor 43 measures the extension and retraction status of the piston rod 31 in real time, and feeds back the measurement result to the controller 42, prompting the controller 42 to accurately control the hydraulic cylinder 3, so as to realize fast and accurate leveling of the support frame 1 and the seedling bed frame 2. When the staff needs to move the seedling bed frame 2 to make the adjacent seedling bed frame 2 close to each other to improve the space utilization rate, the staff can drive the first rotating shaft 51 and the gear 52 to rotate by turning the hand wheel 53, and the seedling bed frame 2 can be moved left and right through the meshing cooperation of the gear 52 and the rack 21, so as to make the adjacent seedling bed frame 2 close to the closed aisle to improve the indoor space utilization rate; When the hand wheel 53 is rotated to drive the first rotating shaft 51 to rotate, the first rotating shaft 51 drives the second rotating shaft 6 and the cleaning brush 61 to rotate through the cooperation of the first pulley 621, the second pulley 622 and the belt 623. The rotation of the cleaning brush 61 cleans the gear teeth of the gear 52 to reduce the possibility of dust and impurities adhering to the gear 52. The first rotating shaft 51 drives the cam 74 to rotate during the rotation process. The cam 74 contacts the arc surface at the top of the pressure block 72 during the rotation process and pushes the pressure block 72 to move down to compress the spring 75 and squeeze the air bag 73. After the air bag 73 is pressurized, the internal gas of the air bag 73 enters the blowing pipe 23 through the ventilation pipe 76 and is finally ejected through the nozzle 231. The gas ejected from the nozzle 231 will spray and clean the rack 21 to reduce the possibility of dust and impurities adhering to the rack 21, thereby reducing the wear of the gear 52 during the meshing and matching process with the rack 21 and increasing the service life of the gear 52 and the rack 21.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A mobile seedbed that can be quickly leveled, characterized in that: The invention comprises a support frame (1) and a seedling bed frame (2); the seedling bed frame (2) is horizontally mounted on the top surface of the support frame (1); grooves (11) are provided on the bottom surfaces of the four corner legs of the support frame (1); a hydraulic cylinder (3) is provided on the inner side wall of the top end of each groove (11); a piston rod (31) is provided at the output end of the hydraulic cylinder (3); a support plate (32) which can extend out of the bottom of the groove (11) is fixedly connected to the bottom end of the piston rod (31); a sensor control mechanism (4) is provided on the bottom surface of the seedling bed frame (2); the sensor control mechanism (4) can detect the horizontality of the seedling bed frame (2) and control the hydraulic cylinder (3) to drive the piston rod (31) to extend and retract.

2. A mobile seedbed capable of rapid leveling according to claim 1, characterized in that: The sensing control mechanism (4) comprises an inclination sensor (41) and a controller (42); the inclination sensor (41) is mounted on the bottom surface of the seedling bed frame (2), and the inclination sensor (41) can detect the horizontality of the seedling bed frame (2); the controller (42) is mounted on the bottom surface of the seedling bed frame (2), the controller (42) is electrically connected to the hydraulic cylinder (3), and the controller (42) controls the extension and retraction of the output end of the hydraulic cylinder (3); the inclination sensor (41) is electrically connected to the controller (42); the end of each hydraulic cylinder (3) close to the piston rod (31) is provided with a laser distance sensor (43) that can detect the extension and retraction status of the piston rod (31); the laser distance sensor (43) is electrically connected to the controller (42).

3. The mobile seedbed capable of rapid leveling according to claim 1, characterized in that: The seedling bed frame (2) is horizontally slidably arranged on the top surface of the support frame (1); a rack (21) arranged along the sliding direction of the seedling bed frame (2) is fixedly connected to the bottom surface of the seedling bed frame (2); and a driving mechanism (5) capable of driving the rack (21) to move is arranged on the support frame (1).

4. The mobile seedbed capable of rapid leveling according to claim 3, characterized in that: The driving mechanism (5) comprises a first rotating shaft (51); the first rotating shaft (51) is rotatably connected to a support frame (1) at the bottom of the rack (21); a gear (52) is coaxially fixedly connected to the outer wall of the first rotating shaft (51) close to the rack (21); the gear (52) is meshed with the rack (21); and a hand wheel (53) is coaxially fixedly connected to one end of the first rotating shaft (51).

5. The mobile seedbed capable of rapid leveling according to claim 3, characterized in that: The bottom surfaces of both ends of the seedling bed frame (2) in the length direction are provided with dovetail grooves (22) arranged along the sliding direction of the seedling bed frame (2); the top surfaces of the four corner legs of the support frame (1) are fixedly connected to limit blocks (12); the top ends of the four limit blocks (12) are respectively inserted into the two dovetail grooves (22), and the top ends of the limit blocks (12) are slidably matched with the inner walls of the dovetail grooves (22).

6. The mobile seedbed capable of rapid leveling according to claim 4, characterized in that: The support frame (1) is rotatably connected to a second rotating shaft (6) located on one side of the first rotating shaft (51); the second rotating shaft (6) is coaxial with the first rotating shaft (51), and cleaning brushes (61) are fixedly connected to both ends of the second rotating shaft (6); the cleaning brush (61) is in contact with the gear teeth of the gear (52); and a transmission assembly (62) is provided at one end of the second rotating shaft (6) for enabling the first rotating shaft (51) to drive the second rotating shaft (6) to rotate.

7. The mobile seedbed capable of rapid leveling according to claim 6, characterized in that: The transmission assembly (62) comprises a first pulley (621), a second pulley (622) and a belt (623); the first pulley (621) is coaxially fixedly connected to the outer wall of one end of the first rotating shaft (51); the second pulley (622) is coaxially fixedly connected to the outer wall of the end of the second rotating shaft (6) close to the first pulley (621); the belt (623) is sleeved on the outside of the first pulley (621) and the second pulley (622), and the belt (623) enables the first pulley (621) and the second pulley (622) to move in linkage.

8. The mobile seedbed capable of rapid leveling according to claim 4, characterized in that: The bottom surface of the seedling bed frame (2) is fixedly connected with a blow pipe (23) located on one side of the rack (21); a plurality of nozzles (231) connected to the blow pipe (23) are fixedly connected to the outer wall of the blow pipe (23); the nozzles (231) are arranged toward the rack (21); and a blow mechanism (7) capable of reciprocatingly blowing air into the blow pipe (23) is arranged on the support frame (1).

9. The mobile seedbed capable of rapid leveling according to claim 8, characterized in that: The blowing mechanism (7) comprises a concave shell (71), a pressing block (72), an air bag (73) and a cam (74); the concave shell (71) is fixedly connected to the outer wall of one end of the support frame (1), and the concave shell (71) is located at the bottom of the first rotating shaft (51); the pressing block (72) is slidably connected to the inner wall of the concave shell (71), the bottom surface of the pressing block (72) is connected to the inner wall of the bottom end of the concave shell (71) through a spring (75), and the top end of the pressing block (72) extends to the top of the concave shell (71) and is provided with an arc surface; The airbag (73) is arranged inside the concave shell (71), the airbag (73) contacts the bottom surface of the pressing block (72), and a vent pipe (76) is connected to the airbag (73); the end of the vent pipe (76) away from the airbag (73) is connected to the blowing pipe (23), and the vent pipe (76) communicates the airbag (73) and the blowing pipe (23); the cam (74) is fixedly connected to the outer side wall of the end of the first rotating shaft (51) close to the pressing block (72), and the cam (74) can contact and cooperate with the arc surface at the top of the pressing block (72).

10. The mobile seedbed capable of rapid leveling according to claim 1, characterized in that: A rubber pad (321) is fixedly connected to the bottom surface of the support plate (32).

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