Ploughing machine

Abstract

The utility model discloses a plowing machine, belongs to the technical field of farm tools, and solves the problems that the safety of a user is increased due to manual mechanical operation, and the legs of the user stretch into the position of a coulter under the condition that the user does not pay attention, so that the user is injured. Comprising a rack, a rotating shaft rotationally connected into the rack, two front wheels, two vertical rods fixedly connected to the rear side of the rack, two rear wheels and a driving assembly, and the two ends of the rotating shaft penetrate through the rack. When the plowing machine is used, a user holds the handrail, the driving motor is powered on, the speed reducer and the transmission shaft drive the chain wheel to rotate, the front wheel is driven to roll, displacement of the plowing machine is achieved, and rear wheels are kept stable. The infrared sensor detects human body infrared rays and feeds back signals to the voltage comparison circuit, the comparison signals trigger the delay circuit and send signals after timing, and the power-off circuit disconnects the relay and cuts off a motor power supply to prevent danger.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural implements, in particular to a land cultivator. Background Technique

[0002] A soil-turning machine is an agricultural machine mainly used for tilling the land. By turning over the soil, it can improve the soil structure, increase the air permeability and drainage of the soil, and create good conditions for crop growth. The soil-turning machine is usually towed by a tractor, and its core components are a series of plowshares or plow blades installed on the frame. These plowshares or plow blades are designed to penetrate deep into the soil, turn the underlying soil to the upper layer, and at the same time turn the upper soil to the bottom layer.

[0003] At present, during the normal operation of the existing soil-turning machine, farmers generally need to cooperate with the operation. However, the manual operation of the machine increases the safety problems for users. When the user is not paying attention, the user's leg may extend to the position where the plow blade is located, resulting in injury.

[0004] Therefore, a land cultivator is proposed to solve or alleviate the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to solve the defects existing in the prior art, and a land cultivator is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A land cultivator includes a frame, a rotating shaft rotatably connected inside the frame, two front wheels, two vertical rods fixedly connected to the rear side of the frame, two rear wheels, and a driving component. Both ends of the rotating shaft penetrate through the frame, and the front wheels are fixedly connected to both ends of the rotating shaft. The rear wheels are rotatably connected to the lower ends of the vertical rods. The driving component is fixedly connected to the frame and is in transmission connection with the rotating shaft. A plurality of connecting sleeves are fixedly connected to the rotating shaft, and a plurality of plow blades are fixedly connected to the outer circle of the connecting sleeves. It further includes a detection and control circuit, which is coupled to the driving component. The detection and control circuit detects the human body infrared rays below the frame and controls the driving component to stop working.

[0008] Preferably, the driving component includes a driving motor fixedly connected to the top surface of the frame, a speed reducer in transmission connection with the driving motor, a transmission shaft in transmission connection with the output shaft of the speed reducer, a driving sprocket fixedly connected to the transmission shaft, a driven sprocket fixedly connected to the rotating shaft, and a chain in transmission connection with the driving sprocket and the driven sprocket.

[0009] Preferably, a protective cover sleeving the driving sprocket, the driven sprocket, and the chain is fixedly connected to one side of the frame.

[0010] Preferably, the detection and control circuit includes

[0011] An infrared sensor is disposed on the inner top surface of the frame, and the probe of the infrared sensor is vertically downward, which collects human infrared rays and feeds back an infrared signal;

[0012] A voltage comparison circuit, the input end of the voltage comparison circuit is coupled to the output end of the infrared sensor, and the voltage comparison circuit outputs a comparison signal in response to the infrared signal being greater than a preset infrared reference signal therein;

[0013] A delay circuit, the input end of which is coupled to the output end of the voltage comparison circuit, and the delay circuit starts timing in response to the comparison signal and outputs a delay signal after the timing ends;

[0014] A power-off circuit, the controlled end of the power-off circuit is coupled to the output end of the delay circuit, the drive motor is electrically connected through the power-off circuit, and the power-off circuit performs a power-off setting on the power-off circuit in response to the delay signal.

[0015] Preferably, the voltage comparison circuit includes a voltage comparator.

[0016] Preferably, the delay circuit includes an RC delay circuit.

[0017] Preferably, the power-off circuit includes a triode switch, a relay, and a normally-closed relay switch. The base of the triode switch is coupled to the output end of the delay circuit. The collector of the triode switch is connected to the relay and then electrically connected. The emitter of the triode switch is grounded. The normally-closed relay switch is connected in series with the drive motor and then electrically connected.

[0018] Preferably, it further includes a handrail, and the handrail is fixedly connected to the rear side of the frame.

[0019] The utility model has the following beneficial effects:

[0020] When the utility model is in use, the user holds the handrail, energizes the drive motor, drives the sprocket to rotate through the speed reducer and the transmission shaft, drives the front wheel to roll, realizes the displacement of the tiller, and the rear wheel remains stable. The protective cover prevents soil adhesion. The infrared sensor detects human infrared rays, feeds back the signal to the voltage comparison circuit, the comparison signal triggers the delay circuit, sends out a signal after timing, and the power-off circuit disconnects the relay to cut off the power supply of the motor to prevent danger. Description of the Drawings

[0021] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the attached drawings required for the embodiments. It should be understood that the following attached drawings only show some embodiments of the present utility model, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related attached drawings can also be obtained based on these attached drawings.

[0022] Figure 1 It is a schematic structural diagram of the present utility model;

[0023] Figure 2 It is a block diagram of the detection and control circuit in the present utility model;

[0024] Figure 3 It is a wiring diagram of the detection and control circuit in the present utility model.

[0025] 1. Frame; 2. Vertical rod; 3. Rear wheel; 4. Driving motor; 5. Reducer; 6. Transmission shaft; 7. Protective cover; 8. Rotating shaft; 9. Connecting sleeve; 10. Plow blade; 11. Front wheel; 12. Handrail; 13. Voltage comparison circuit; 14. Delay circuit; 15. Power-off circuit. Detailed implementation manners

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the attached drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and shown in the attached drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present utility model provided in the attached drawings is not intended to limit the scope of the present utility model claimed, but merely represents the selected embodiments of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0028] It should be noted that similar reference numerals and letters indicate similar items in the following attached drawings. Therefore, once an item is defined in one attached drawing, it does not need to be further defined and explained in subsequent attached drawings.

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this utility model is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0030] In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0031] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] A tiller, as Figure 1 shown, includes a frame 1, a rotating shaft 8 rotatably connected inside the frame 1, two front wheels 11, two vertical rods 2 fixedly connected to the rear side of the frame 1, two rear wheels 3, a driving assembly, and a handrail 12. The handrail 12 is fixedly connected to the rear side of the frame 1. Both ends of the rotating shaft 8 penetrate through the frame 1, and the front wheels 11 are fixedly connected to both ends of the rotating shaft 8. The rear wheels 3 are rotatably connected to the lower ends of the vertical rods 2. The driving assembly is fixedly connected to the frame 1 and is in transmission connection with the rotating shaft 8. A plurality of connecting sleeves 9 are fixedly connected to the rotating shaft 8, and a plurality of plow blades 10 are fixedly connected to the outer ring of the connecting sleeves 9. It further includes a detection and control circuit, which is coupled to the driving assembly. The detection and control circuit detects the human body infrared rays below the frame 1 and controls the driving assembly to stop working.

[0033] The driving assembly includes a driving motor 4 fixedly connected to the top surface of the frame 1, a speed reducer 5 in transmission connection with the driving motor 4, a transmission shaft 6 in transmission connection with the output shaft of the speed reducer 5, a driving sprocket fixedly connected to the transmission shaft 6, a driven sprocket fixedly connected to the rotating shaft 8, and a chain in transmission connection between the driving sprocket and the driven sprocket. A protective cover 7 sleeving the driving sprocket, the driven sprocket, and the chain is fixedly connected to one side of the frame 1.

[0034] As Figure 2As shown, the control circuit includes an infrared sensor 16, a voltage comparison circuit 13, a delay circuit 14, a power-off circuit 15, and a power-off circuit 15. The voltage comparison circuit 13 includes a voltage comparator. The delay circuit 14 includes an RC delay circuit. The power-off circuit 15 includes a triode switch, a relay, and a normally-closed relay switch. The base of the triode switch is coupled to the output terminal of the delay circuit 14. The collector of the triode switch is connected to the relay and then to the power supply. The emitter of the triode switch is grounded. The normally-closed relay switch is connected in series with the drive motor 4 and then to the power supply.

[0035] The infrared sensor 16 is disposed on the inner top surface of the frame 1, and the probe of the infrared sensor 16 is vertically downward. It collects human body infrared rays and feeds back an infrared signal. The input terminal of the voltage comparison circuit 13 is coupled to the output terminal of the infrared sensor 16. The voltage comparison circuit 13 outputs a comparison signal in response to the infrared signal being greater than a preset infrared reference signal therein. The input terminal of the delay circuit 14 is coupled to the output terminal of the voltage comparison circuit 13. The delay circuit 14 starts timing in response to the comparison signal and outputs a delay signal after the timing ends. The controlled terminal of the power-off circuit 15 is coupled to the output terminal of the delay circuit 14. The drive motor 4 is connected to the power supply through the power-off circuit 15. The power-off circuit 15 cuts off the power supply to the power-off circuit 15 in response to the delay signal.

[0036] In the actual application of the present utility model, the user holds the armrest 12 and powers on the drive motor 4, so that the drive motor 4 is driven through the speed reducer 5. Then, the speed reducer 5 is driven through the transmission shaft 6 to drive the driving sprocket to rotate. The driving sprocket drives the driven sprocket to rotate through the chain. At this time, the driven sprocket drives the rotating shaft 8 to rotate, so that the front wheel 11 rolls, thereby driving the entire tiller to displace. The rear wheel 3 ensures the stability of the entire tiller during displacement. The protective cover 7 protects the driving sprocket, the driven sprocket, and the chain during this process, preventing soil from adhering to the driving sprocket, the driven sprocket, and the chain. If the user's foot steps too far under the frame 1, at this time, the infrared sensor 16 can detect the human body infrared rays and feed back the infrared signal to the voltage comparison circuit 13. After receiving the infrared signal, the voltage comparison circuit 13 compares it with the infrared reference signal, and outputs a comparison signal to the delay circuit 14 after the infrared signal is greater than the infrared reference signal. The delay circuit 14 continuously receives the comparison signal for charging and timing. After the charging ends, the timing also ends, and a delay signal is sent to the base of the triode switch in the power-off circuit 15. The collector and emitter of the triode switch in the power-off circuit 15 are also turned on, so that the relay is powered on and the normally-closed relay switch is opened. In this way, the drive motor 4 can also be powered off, preventing the user from further stepping his foot into it and avoiding danger to the user.

[0037] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A land cultivator, characterized in that, It includes a frame (1), a rotating shaft (8) rotatably connected within the frame (1), two front wheels (11), two vertical rods (2) fixedly connected to the rear side of the frame (1), two rear wheels (3), and a driving assembly. Both ends of the rotating shaft (8) penetrate through the frame (1), and the front wheels (11) are fixedly connected to both ends of the rotating shaft (8). The rear wheels (3) are rotatably connected to the lower ends of the vertical rods (2). The driving assembly is fixedly connected to the frame (1) and is in transmission connection with the rotating shaft (8). A number of connecting sleeves (9) are fixedly connected to the rotating shaft (8), and a number of plow blades (10) are fixedly connected to the outer circumference of the connecting sleeves (9). It also includes a detection and control circuit, which is coupled to the driving assembly. The detection and control circuit detects the human body infrared rays below the frame (1) and controls the driving assembly to stop working.

2. A rotary tiller according to claim 1, characterized in that, The driving assembly includes a driving motor (4) fixedly connected to the top surface of the frame (1), a speed reducer (5) in transmission connection with the driving motor (4), a transmission shaft (6) in transmission connection with the output shaft of the speed reducer (5), a driving sprocket fixedly connected to the transmission shaft (6), a driven sprocket fixedly connected to the rotating shaft (8), and a chain in transmission connection between the driving sprocket and the driven sprocket.

3. A rotary tiller according to claim 2, wherein, A protective cover (7) sleeving the driving sprocket, the driven sprocket, and the chain is fixedly connected to one side of the frame (1).

4. A land cultivator according to claim 2, characterized in that, The detection and control circuit includes an infrared sensor (16), which is arranged on the inner top surface of the frame (1), and the probe of the infrared sensor (16) is arranged vertically downward to collect the human body infrared rays and feedback an infrared signal; a voltage comparison circuit (13), the input end of the voltage comparison circuit (13) is coupled to the output end of the infrared sensor (16), and the voltage comparison circuit (13) outputs a comparison signal in response to the infrared signal being greater than a preset infrared reference signal therein; a delay circuit (14), the input end of which is coupled to the output end of the voltage comparison circuit (13), and the delay circuit (14) starts timing in response to the comparison signal and outputs a delay signal after the timing ends; a power-off circuit (15), the controlled end of the power-off circuit (15) is coupled to the output end of the delay circuit (14), the driving motor (4) is electrically connected through the power-off circuit (15), and the power-off circuit (15) performs a power-off setting on the power-off circuit (15) in response to the delay signal.

5. A rotary tiller according to claim 4, characterized in that, The voltage comparison circuit (13) includes a voltage comparator.

6. A rototiller according to claim 4, characterized in that, The delay circuit (14) includes an RC delay circuit.

7. A rotary cultivator according to claim 4, characterized in that, The power-off circuit (15) includes a triode switch, a relay, and a normally closed relay switch. The base of the triode switch is coupled to the output end of the delay circuit (14), the collector of the triode switch is connected to the relay and then electrically connected, the emitter of the triode switch is grounded, and the normally closed relay switch is connected in series with the driving motor (4) and then electrically connected.

8. A land tiller according to claim 1, characterized in that, It also includes a handrail (12), and the handrail (12) is fixedly connected to the rear side of the frame (1).

Images