A portable laser topping machine

Abstract

The present invention discloses a portable laser topping machine, which comprises a machine body, wherein the machine body has a handle and a main body, wherein the main body comprises a first fork and a second fork; a laser topping device and a laser detection device are installed in the main body, wherein the laser device comprises a high-power laser source and a first reflector installed at the end of the first fork; the laser detection device comprises a first laser emitter and a first laser receiver; the high-power laser source and the first laser receiver are installed at the root of the first fork and the root of the second fork respectively; the first laser receiver is installed at the end of the first fork and is located in front of the first reflector; a second reflector is installed at the end of the second fork, and the inclination angles of the first reflector and the second reflector are inconsistent; a corrosion-resistant block is installed at the root of the second fork at the same time, which is staggered with the first laser emitter; a second laser emitter is installed below the first corrosion-resistant block, and a second laser receiver is installed below the first reflector.

Description

Technical Field

[0001] The invention relates to the technical field of plant topping, in particular to a portable laser topping machine. Background Art

[0002] During the growth of crops such as cotton and tobacco, it is necessary to top the plants in time to inhibit the growth of the terminal buds, eliminate the dominant effect of the top, and promote the growth of the side leaves. A handheld laser topping machine is an important topping device. In the prior art, topping is mainly completed by shearing with a mechanical structure. There are also prior arts on topping using lasers, such as patent CN 214206480U, which discloses an optical path of a laser cotton topping device. This patent solution mainly introduces the optical path of the laser so that a beam of laser is dispersed into three beams and then converged to a point to achieve topping. When the laser topping device is used in a handheld topping machine, since the laser consumes more energy, it is necessary to save energy as much as possible to improve the endurance of the topping machine. Patent CN 216087791 U discloses a drone that uses a camera to identify the bud tip for laser topping, but this solution is not suitable for a handheld topping machine. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a portable laser topping machine that can accurately control the on and off of the topping laser to save energy and reduce the risk of use.

[0004] Technical Solution: To achieve the above-mentioned objectives, the portable laser topping machine of the present invention includes a body having a handle and a main body, the main body including a first fork and a second fork, the first fork and the second fork being arranged in parallel; a laser topping device and a laser detection device are installed in the main body, the laser topping device includes a high-power laser source and a first reflector installed at the end of the first fork; the laser detection device includes a first laser transmitter and a first laser receiver;

[0005] The high-power laser source and the first laser transmitter are respectively mounted at the root of the first fork and the root of the second fork; the first laser receiver is mounted at the end of the first fork and located in front of the first reflector;

[0006] A second reflector is installed at the end of the second fork, the first reflector and the second reflector have different inclination angles, and the detection laser emitted by the first laser transmitter can be reflected by the second reflector to the first laser receiver;

[0007] The root of the second fork is also equipped with a corrosion-resistant block staggered with the first laser emitter, and the topping laser emitted by the high-power laser source can be reflected to the corrosion-resistant block via the second reflector;

[0008] A second laser transmitter is installed below the corrosion-resistant block, and a second laser receiver is installed below the first reflector. The detection laser emitted by the second laser transmitter is reflected to the second laser receiver via the second reflector.

[0009] During use, the first laser emitter is normally on. The user holds the handle so that the line connecting the two prong ends (this line is virtual and does not actually exist) is approximately perpendicular to the location on the crop to be cut, and the line connecting the two prong ends intersects the location on the crop to be cut. During this process, because the detection light path reflected by the second reflector to the first laser receiver is ahead, the light flux detected by the first laser receiver decreases, generating a first trigger signal. Based on this first trigger signal, the controller turns on the high-power laser source. The topping laser light generated by the high-power laser source is reflected by the first reflector and emitted from the end of the first prong to perform the topping operation. When the light flux of the second laser receiver decreases and then increases, a second trigger signal is generated. Based on this second trigger signal, the controller controls the high-power laser source to stop operation. When crop topping is completed and the high-power laser source has not yet been turned off, the topping laser light generated by it is reflected by the second reflector to the corrosion-resistant block, which is then exposed to the laser light.

[0010] During topping operations, the stalks of crops are selected as cutting objects to avoid interference of leaves on the detection laser and the topping laser.

[0011] Furthermore, the laser topping device also includes a third reflector mounted at the base of the first fork. The main body is U-shaped and hollow, and the high-power laser source is located at the junction of the main body and the handle. The topping laser generated by the high-power laser source is first reflected by the third reflector and then by the first reflector. The propagation path of the topping laser after reflection by the third reflector (i.e., the propagation segment within the first fork) is parallel to the laser emitted by the first laser emitter. The first and second forks are equidistant from the handle. With this structure, the high-power laser source is located at the front end of the handle, close to where the human hand grips it. This effectively reduces the lever arm of the high-power laser source and the force required for the human hand to grip the handle.

[0012] Furthermore, the front end of the corrosion-resistant block has an inward notch, and the topping laser reflected by the second reflector enters the notch, so that the laser erodes the corrosion-resistant block. Moreover, with the notch design, the reflection and refraction generated by the topping laser will not affect the surrounding components.

[0013] Furthermore, an openable cover is provided at the corner of the main body at the root of the second fork, and the corrosion-resistant block can be removed and replaced from the cover. This makes it easy to replace the corrosion-resistant block to prevent the laser from corroding the corrosion-resistant block and further corroding other components.

[0014] Furthermore, the inclination angle of the first reflector relative to the first fork body is 45°, and the topping laser generated by the high-power laser source is reflected by the first reflector and propagates in a direction perpendicular to the first fork body; the inclination angle of the second reflector relative to the first fork body is less than 45°.

[0015] Furthermore, an external power supply is included, which is connected to the body and supplies power to the laser topping device and the laser detection device. The power supply can be configured in a wearable form, such as being carried on the back of the user, thereby reducing the burden on the hand and improving battery life.

[0016] Beneficial effects: The portable laser topping machine of the present invention has the following beneficial effects:

[0017] (1) By staggering the installation of the first reflector and the second reflector, the optical path corresponding to the topping laser generated by the high-power laser source and the optical path corresponding to the detection laser generated by the first laser emitter can be staggered, thereby preventing the laser generated by the high-power laser source from damaging the first laser emitter. At the same time, the detection optical path and the topping optical path have a certain degree of overlap and share the second reflector, thereby reducing the number of components used, improving the compactness of the structure, and reducing the volume and weight of the topping machine.

[0018] (2) The second reflector can complete the reflection effect of one topping laser and two detection lasers, realize the timely opening and closing of the high-power laser source, reduce power consumption, and improve the life of the portable laser topping machine. In the gap between the completion of topping and the shutdown of the high-power laser source, the topping laser is reflected to the corrosion-resistant block through the second reflector, which can prevent the danger caused by the leakage of high-power laser. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a side view of a portable laser topping machine;

[0020] Figure 2 This is a top view of a portable laser topping machine;

[0021] Figure 3 This is the internal structure diagram of the main part.

[0022] In the figure: 1-body; 11-handle; 12-main part; 121-first fork; 122-second fork; 123-cover; 2-laser topping device; 21-high-power laser source; 22-first reflector; 23-corrosion-resistant block; 23a-recess; 24-third reflector; 3-laser detection device; 31-first laser emitter; 32-first laser receiver; 33-second reflector; 34-second laser emitter; 35-second laser receiver; 4-power supply. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] like Figure 1-2 The portable laser topping machine shown in the figure comprises a body 1 having a handle 11 and a main body 12. The main body 12 comprises a first fork 121 and a second fork 122 arranged in parallel. The main body 12 houses a laser topping device 2 and a laser detection device 3. The device also includes an external power supply 4, which is connected to the body 1 and supplies power to the laser topping device 2 and the laser detection device 3. The power supply 4 can be configured as a wearable device, such as one that can be carried on the user's back, reducing hand strain and improving battery life.

[0025] like Figure 3 As shown, the laser topping device 2 includes a high-power laser source 21 and a first reflector 22 installed at the end of the first fork 121; the laser detection device 3 includes a first laser emitter 31 and a first laser receiver 32; the high-power laser source 21 and the first laser emitter 31 are installed at the root of the first fork 121 and the root of the second fork 122 respectively; the first laser receiver 32 is installed at the end of the first fork 121 and is located in front of the first reflector 22; a second reflector 33 is installed at the end of the second fork 122, and the inclination of the first reflector 22 and the second reflector 33 is adjusted. The angles are inconsistent, and the detection laser emitted by the first laser emitter 31 can be reflected to the first laser receiver 32 via the second reflector 33; the root of the second fork 122 is also installed with a corrosion-resistant block 23 that is staggered with the first laser emitter 31, and the topping laser emitted by the high-power laser source 21 can be reflected to the corrosion-resistant block 23 via the second reflector 33; a second laser emitter 34 is installed below the corrosion-resistant block 23, and a second laser receiver 35 is installed below the first reflector 22, and the detection laser emitted by the second laser emitter 34 is reflected to the second laser receiver 35 via the second reflector 33.

[0026] The inclination angle θ1 of the first reflector 22 relative to the first fork body 121 is 45°, and the topping laser generated by the high-power laser source 21 is reflected by the first reflector 22 and propagates in a direction perpendicular to the first fork body 121; the inclination angle θ2 of the second reflector 33 relative to the first fork body 121 is less than 45°.

[0027] In the above structure, the optical path structure is cleverly designed. By staggering the installation of the first reflector 22 and the second reflector 33, the optical path corresponding to the topping laser generated by the high-power laser source 21 and the optical path corresponding to the detection laser generated by the first laser emitter 31 can be staggered with each other, thereby avoiding the laser generated by the high-power laser source 21 from damaging the first laser emitter 31. At the same time, the detection optical path and the topping optical path have a certain degree of overlap, and share the second reflector 33, thereby reducing the number of components used, improving the compactness of the structure, and reducing the volume and weight of the topping machine.

[0028] During use, the first laser emitter 31 is normally on. The user holds the handle 11 so that the line connecting the two fork ends (this line is virtual and does not actually exist) is approximately perpendicular to the location on the crop to be cut, and the line connecting the two fork ends intersects the location on the crop to be cut. During this process, because the detection light path reflected by the second reflector 33 to the first laser receiver 32 is ahead, the light flux detected by the first laser receiver 32 decreases, generating a first trigger signal. Based on this first trigger signal, the controller turns on the high-power laser source 21. The topping laser light generated by the high-power laser source 21 is reflected by the first reflector 22 and emitted from the end of the first fork 121 to perform the topping operation. When the light flux of the second laser receiver 35 decreases and then increases, a second trigger signal is generated. Based on this second trigger signal, the controller controls the high-power laser source 21 to stop operation. When crop topping is completed and the high-power laser source 21 has not yet been turned off, the topping laser light generated by it is reflected by the second reflector 33 to the corrosion-resistant block 23, which is then exposed to the laser light. By adopting the above structure and method, the second reflector 33 can complete the reflection effect of one topping laser and two detection lasers, realize the timely opening and closing of the high-power laser source 21, reduce power consumption, and improve the life of the portable laser topping machine. In the gap between the completion of topping and the shutdown of the high-power laser source 21, the topping laser is reflected to the corrosion-resistant block 23 via the second reflector 33, which can prevent the danger caused by leakage of high-power laser.

[0029] During topping operations, the stalks of crops are selected as cutting objects to avoid interference of leaves on the detection laser and the topping laser.

[0030] Preferably, the laser topping device 2 further includes a third reflector 24 mounted at the base of the first fork 121. The main body 12 is U-shaped and hollow. The high-power laser source 21 is located at the junction of the main body 12 and the handle 11. The topping laser light generated by the high-power laser source 21 is first reflected by the third reflector 24 and then by the first reflector 22. The propagation path of the topping laser light after reflection by the third reflector 24 (i.e., the propagation segment within the first fork 121) is parallel to the laser light emitted by the first laser emitter 31. The first and second forks 121, 122 are equidistant from the handle 11. With this structure, the high-power laser source 21 is located at the front end of the handle 11, close to where the hand grips it. This effectively reduces the moment arm of the high-power laser source 21 and the force required for manual gripping.

[0031] The front end of the corrosion-resistant block 23 has an inward recess 23a, and the topping laser reflected by the second reflector 33 enters the recess 23a, so that the laser erodes the corrosion-resistant block 23. With the design of the recess 23a, the reflection and refraction generated by the topping laser will not affect the surrounding components.

[0032] The main body 12 is provided with an openable cover 123 at the corner portion at the root of the second fork 122. The corrosion-resistant block 23 can be removed and replaced from the cover 123. This facilitates replacement of the corrosion-resistant block 23 to prevent the laser from corroding through the corrosion-resistant block 23 and further corroding other components.

[0033] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A portable laser topping machine, comprising a machine body (1), wherein the machine body (1) has a handle (11) and a main body (12), wherein the main body (12) comprises a first fork (121) and a second fork (122); a laser topping device (2) and a laser detection device (3) are installed in the main body (12), wherein the laser topping device (2) comprises a high-power laser source (21) and a first reflector (22) installed at the end of the first fork (121); and the laser detection device (3) comprises a first laser emitter (31) and a first laser receiver (32); Its characteristics are: The high-power laser source (21) and the first laser transmitter (31) are respectively installed at the root of the first fork (121) and the root of the second fork (122); the first laser receiver (32) is installed at the end of the first fork (121) and is located in front of the first reflector (22); A second reflector (33) is installed at the end of the second fork (122); the first reflector (22) and the second reflector (33) have different inclination angles, and the detection laser emitted by the first laser emitter (31) can be reflected to the first laser receiver (32) via the second reflector (33); The root of the second fork (122) is also equipped with a corrosion-resistant block (23) staggered with the first laser emitter (31), and the topping laser emitted by the high-power laser source (21) can be reflected to the corrosion-resistant block (23) via the second reflector (33); A second laser transmitter (34) is installed below the corrosion-resistant block (23), and a second laser receiver (35) is installed below the first reflector (22); The laser topping device (2) further comprises a third reflector (24), which is mounted at the root of the first fork (121); the main body (12) is in a U-shaped structure, the high-power laser source (21) is located at the connection position between the main body (12) and the handle (11), and the topping laser generated by the high-power laser source (21) is first reflected by the third reflector (24) and then passes through the first reflector (22).

2. The portable laser topping machine according to claim 1, characterized in that: The front end of the corrosion-resistant block (23) has an inwardly sunken notch (23a).

3. The portable laser topping machine according to claim 1, characterized in that: An openable cover (123) is provided on the corner portion of the main body (12) at the root of the second fork (122), and the corrosion-resistant block (23) can be removed and replaced from the position where the cover (123) is located.

4. The portable laser topping machine according to claim 1, characterized in that: The inclination angle of the first reflector (22) relative to the first fork (121) is 45°; the inclination angle of the second reflector (33) relative to the first fork (121) is less than 45°.

5. The portable laser topping machine according to claim 1, characterized in that: It also includes an external power supply (4), which is connected to the machine body (1) and supplies power to the laser topping device (2) and the laser detection device (3).

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