Shoulder type grain cutting machine

Abstract

The utility model belongs to the technical field of agricultural machinery, and discloses an oblique carrying type grain cutting machine which comprises an engine, a transmission shaft and a cutting tool which are in transmission connection in sequence, and an operation handle assembled on the transmission shaft. The device further comprises a human body proximity sensor which is fixedly arranged on the transmission shaft and located above the cutting tool, and the human body proximity sensor is electrically connected with the engine electric control unit to achieve signal transmission. The detection end of the human body proximity sensor faces an operator. The distance between an operator and the cutting tool is detected in real time by additionally arranging the human body proximity sensor, and when the human body proximity sensor detects that the operator is close to a certain range of the cutting tool rotating at a high speed during operation, power can be automatically cut off immediately, so that the cutting tool stops rotating; and therefore, the danger caused by the fact that an operator accidentally gets close to the blade due to nonstandard operation can be effectively avoided, and the use safety of the equipment is higher.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of agricultural machinery technology, and particularly relates to a slanting shoulder type reaper. BACKGROUND

[0002] The slanting shoulder type reaper can be used for harvesting various crops, such as wheat, rice, alfalfa, highland barley, hemp and beans, and is particularly suitable for small plots, irregular plots and areas that are difficult to reach by large harvesters, and can greatly improve the harvesting efficiency, shorten the labor cycle and reduce the physical labor intensity of farmers.

[0003] The slanting shoulder type reaper in the prior art generally comprises a power system, a transmission system, a working component and a control component. The power system is usually a small air-cooled two-stroke gasoline engine; the transmission system usually adopts hard shaft transmission, and the two ends are respectively used for connecting the gasoline engine and the working component, and is responsible for transmitting the power of the gasoline engine to the working component; the working component commonly has three different specifications of blades, such as 40 sawtooth blades, 60 sawtooth blades and 80 sawtooth blades, and is usually selected according to actual harvesting requirements and crop conditions, and is connected to the lower end of the transmission shaft through a speed reducer and rotates at high speed under the driving of the gasoline engine to perform harvesting operation; the control component usually comprises an operation handle assembled in the middle of the transmission shaft for an operator to hold to control the harvesting direction, and a side hanging belt for crossing the equipment on the operator's body to reduce the burden of the operator's hand holding. When working, the side hanging belt is sleeved on the operator's shoulder, the operation handle is held, and the hard shaft is swung transversely, so that the harvesting operation can be completed.

[0004] When using the slanting shoulder type reaper, it is usually emphasized that a sufficient safety distance should be kept between the operator and the working component to ensure personal safety, because:

[0005] 1. The blade rotates at high speed when working and has strong cutting force, so that the operator's foot may be accidentally sucked into the blade and cause serious cuts or even limb loss, which brings great physical harm and pain to the operator; even if the foot does not directly contact the blade, if the distance is too close, the clothes may be sucked and dragged into the blade, and the foot may also be dragged into the blade, which may cause danger;

[0006] 2. During the operation process, the machine may shake to a certain extent due to the vibration of the machine, the bumping in the running and the turning operation, which may cause the position of the blade to deviate, and a sufficient safety distance can provide a safety space for these unpredictable shakes, so that even in the shaking condition, the foot will not accidentally contact the blade.

[0007] However, the operator is difficult to operate normally during the actual operation, and safety accidents may occur due to improper operation. Therefore, how to improve the safety of the slanting shoulder type reaper is a problem to be solved at present. Practical new content

[0008] In order to solve the above problems existing in the prior art, the utility model aims at providing a diagonal cross type mower to improve the safety of the equipment.

[0009] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a diagonal cross type mower, comprising a motor, a transmission shaft and a cutting tool which are sequentially transmission connected, further comprising an operation handle assembled on the transmission shaft; further comprising a human body proximity sensor fixed on the transmission shaft and located above the cutting tool, the human body proximity sensor is electrically connected with the engine electronic control unit to realize signal transmission.

[0010] The detection end of the human body proximity sensor faces the operator.

[0011] As a limitation of the utility model, the human body proximity sensor is detachably arranged on the transmission shaft through the packaging shell;

[0012] The packaging shell comprises a shell, a first horse clamp fixed on the shell, and a second horse clamp cooperating with the first horse clamp for being fixed on the transmission shaft; the side surface of the shell is provided with a through hole for the detection end of the human body proximity sensor to extend out.

[0013] As a further limitation of the utility model, the human body proximity sensor is a capacitive proximity sensor.

[0014] As a further limitation of the utility model, the detection end of the capacitive proximity sensor is coated with a nano super-hydrophobic coating.

[0015] As another limitation of the utility model, further comprising a cutting height sensor fixed on the transmission shaft and a loudspeaker fixed on the transmission shaft; the cutting height sensor and the loudspeaker are electrically connected with the engine electronic control unit to realize signal transmission.

[0016] As a further limitation of the utility model, the cutting height sensor is an ultrasonic sensor.

[0017] As other limitations of the utility model, further comprising a rice supporting device fixed on the lower end of the transmission shaft.

[0018] Due to the adoption of the above technical scheme, the utility model compared with the prior art has the beneficial effects that:

[0019] (1) the utility model adds the human body proximity sensor for detecting the distance between the operator and the cutting tool, when working, if the human body proximity sensor detects that the operator approaches the high-speed rotating cutting tool within a certain range, the power can be automatically cut off to stop the rotation of the cutting tool, which can effectively avoid the danger caused by the non-standard operation of the operator approaching the blade, and improve the safety of the equipment.

[0020] (2) The utility model discloses utilize the packaging shell to form effective protection to human body proximity sensor, can effectively prolong the service life of human body proximity sensor, avoid the collision with flying debris and damage when operating.

[0021] (3) The utility model discloses coating the nanometer superhydrophobic coating on the detection end of human body proximity sensor (i.e. capacitive proximity sensor), utilize the hydrophobicity and dust resistance of the coating, can make dust particle difficult to adhere to its surface, can also reduce the contamination of vegetation juice, dew and other liquids simultaneously, thereby reduce the signal interference caused by pollutant, guarantee stable working state and good detection accuracy.

[0022] (4) The utility model discloses add ultrasonic sensor to monitor the height of cutting tool from ground in real time, when the height does not meet the requirement, can remind the operator through the loudspeaker, and then can help the operator accurate control the distance of cutting tool and ground, ensure that the stubble height meets the requirement when harvesting, avoid the waste of crops due to stubble too high, or the damage of land and cutting tool due to stubble too low, help to improve harvesting quality and protect machine. BRIEF DESCRIPTION OF DRAWINGS

[0023] The utility model will be described in further detail below in combination with the drawings and specific embodiments.

[0024] Figure 1 It is the structure schematic view of the utility model embodiment;

[0025] Figure 2 It is the structure schematic view of another angle of the utility model embodiment;

[0026] Figure 3 It is the structure relationship side view of the utility model embodiment;

[0027] Figure 4 It is Figure 3 It is the local enlarged view of A in the middle;

[0028] Figure 5 It is the installation structure schematic view of human body proximity sensor, cutting height sensor on transmission shaft;

[0029] In the drawing: 1, engine;2, transmission shaft;3, cutting tool;4, operating handle;5, rice supporting device;6, human body proximity sensor;7, packaging shell;8, first horse saddle;9, second horse saddle;10, shell;11, cutting height sensor. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0031] This embodiment discloses a slanted-body harvester. The biggest improvement is the addition of a human proximity sensor 6 and a cutting height sensor 11 to the existing slanted-body harvester, which enhances the machine's safety and ease of use. The human proximity sensor 6 detects the distance between the operator and the cutting blade 3. When the distance is less than the safe distance (typically, the operator's feet should be at least 30cm away from the cutting blade 3), this embodiment can immediately and automatically cut off the power to stop the cutting blade 3 from rotating. The cutting height sensor 11 monitors the height of the cutting blade 3 from the ground in real time, assisting the operator in accurately controlling the distance between the cutting blade 3 and the ground, ensuring that the stubble height meets requirements during harvesting.

[0032] Specifically, the mechanical structure of this embodiment adopts existing technology, such as... Figures 1-2 As shown, the system includes an engine 1, a drive shaft 2, a cutting blade 3, and an operating handle 4. The engine 1 is a small, air-cooled, two-stroke gasoline engine with an electronic control unit. The drive shaft 2 uses a rigid shaft drive system, with its upper end connected to the engine 1 and its lower end connected to the cutting blade 3, used to transmit the power of the engine 1 to the cutting blade 3. The cutting blade 3 is a saw blade, connected to the lower end of the drive shaft 2 via a reducer, and can rotate at high speed under the power of the engine 1 to perform harvesting operations. The operating handle 4 is mounted in the middle of the drive shaft 2, and the operating handle 4 is equipped with a clutch that is connected to the engine 1. The operating handle 4 is used by the operator to hold and control the harvesting direction and the start and stop of the cutting blade 3.

[0033] like Figures 1-2 As shown, this embodiment also includes a rice support 5 fixed to the lower end of the drive shaft 2. The rice support 5 is located above the cutting blade 3 and is used to lift up the lodged rice grains during the harvesting process, so that the rice grains can be cut and transported more neatly. In this embodiment, the rice support 5 also adopts an existing structure.

[0034] This embodiment differs from existing technologies in that a human proximity sensor 6 and a cutting height sensor 11 are added to the mechanical structure. For example... Figures 3-4 As shown, the human proximity sensor 6 is fixed to the drive shaft 2 via the encapsulation housing 7, located above the cutting tool 3. The human proximity sensor 6 is electrically connected to the electronic control unit of the engine 1 to achieve signal transmission. When the human proximity sensor 6 detects that the distance between the operator and the cutting tool 3 is less than 30cm and transmits the signal to the electronic control unit of the engine 1, the electronic control unit controls the engine 1 to stop working.

[0035] It should be noted that the detection end of the human body proximity sensor 6 is horizontally oriented towards the operator using the embodiment, so as to accurately detect the distance between the operator and the cutting tool 3.

[0036] In the embodiment, the human body proximity sensor 6 adopts an existing capacitive proximity sensor, and a nano super-hydrophobic coating is coated on the detection end of the capacitive proximity sensor. The hydrophobicity and dust repellency of the coating can reduce signal interference caused by pollutants.

[0037] As shown in Figure 5 The packaging shell 7 includes a housing 10, a first horse shoe 8 fixed on the housing 10, and a second horse shoe 9 matched with the first horse shoe 8. A through hole is provided on the side of the housing 10. After the human body proximity sensor 6 is packaged in the housing 10, the detection end of the human body proximity sensor 6 can extend out of the through hole and be oriented towards the operator. The first horse shoe 8 and the second horse shoe 9 are buckled on the transmission shaft 2, and the first horse shoe 8 and the second horse shoe 9 are connected by bolts, so that the detachable setting on the transmission shaft 2 can be achieved.

[0038] The cutting height sensor 11 is an ultrasonic sensor fixed on the transmission shaft 2, as shown in Figures 3-4 The cutting height sensor 11 is located above the human body proximity sensor 6 and is electrically connected with the engine 1 control unit to realize signal transmission. In order to realize the reminding of the operator, a loudspeaker is fixed on the transmission shaft 2, and the loudspeaker is also electrically connected with the engine 1 control unit. During operation, the cutting height sensor 11 monitors the height of the tool from the ground in real time, and transmits the signal to the control unit. The control unit makes internal judgment. If the height does not meet the requirements, the control unit will transmit a signal to the loudspeaker to remind the operator to adjust the height.

[0039] In order to ensure the accuracy of the detection result, the transmitting end and the receiving end of the cutting height sensor 11 are vertically oriented towards the ground.

[0040] It should be noted that the above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Although the above embodiments of the present application have been described in detail, those skilled in the art can still modify the technical solutions described in the above embodiments, or equivalently replace some technical features. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A slanted harvester, comprising an engine, a drive shaft, and cutting blades connected in sequence, and an operating handle mounted on the drive shaft; characterized in that: The human body proximity sensor is fixed on the transmission shaft and above the cutting tool, and is electrically connected with the engine electronic control unit to realize signal transmission. The detection end of the human body proximity sensor faces the operator.

2. The shoulder-mounted brushcutter according to claim 1, characterized in that: The human body proximity sensor is detachably arranged on the transmission shaft through an encapsulation shell. The encapsulation shell comprises a shell, a first horse clamp fixed on the shell, and a second horse clamp matched with the first horse clamp to be fixed on the transmission shaft; a through hole is arranged on the side of the shell for the detection end of the human body proximity sensor to extend out.

3. The shoulder-mounted brushcutter according to claim 2, characterized in that: The human body proximity sensor is a capacitive proximity sensor.

4. The shoulder-mounted brushcutter according to claim 3, characterized in that: A nano super-hydrophobic coating is coated on the detection end of the capacitive proximity sensor.

5. The shoulder-mounted cutting machine according to any one of claims 1-4, characterized in that: The cutting height sensor and the loudspeaker are both fixed on the transmission shaft and electrically connected with the engine electronic control unit to realize signal transmission.

6. The shoulder-mounted brushcutter according to claim 5, characterized in that: The cutting height sensor is an ultrasonic sensor.

7. The shoulder-mounted brushcutter according to any one of claims 1-4, 6, characterized in that: The rice supporting device is fixed on the lower end of the transmission shaft.

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