Multifunctional tea garden cultivation management equipment

Abstract

The invention discloses multifunctional tea garden cultivation management equipment, and relates to the technical field of cultivation equipment. The device comprises a main frame, a height adjusting assembly is arranged outside the main frame, a tillage cutter set and a driving assembly are installed in the main frame, and a pesticide spraying assembly is arranged in the main frame; the detection assembly comprises a mounting shaft rotationally connected to the interior of the main frame, a plurality of detection cutters are arranged outside the mounting shaft in an array mode in the axial direction, shifting plates are fixedly connected to the two ends of the mounting shaft, rotating seats are rotationally connected to the two sides of the main frame, pulling springs are fixedly connected between the rotating seats and the corresponding shifting plates, and an arc-shaped guide rail is fixedly connected to one side of the main frame; the side, away from the main frame, of the arc-shaped guide rail is fixedly connected with an arc-shaped electrode slice, and the outer portion of one shifting plate is fixedly connected with an electricity connecting device matched with the arc-shaped guide rail. Hard objects in the land are detected through the detection cutter, the tillage cutter set is lifted when the detection cutter meets stones, tillage blades are prevented from being damaged, and the service life of the tillage cutter set is prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of farming equipment, and in particular relates to multifunctional tea garden farming management equipment. Background Art

[0002] Tea garden farming and management equipment is a series of mechanical equipment used for tea garden soil cultivation, management, maintenance and pest control. These equipment are mainly used for tea garden tillage, deep plowing, inter-row weeding and digging fertilizer ditches, irrigation and drainage ditches, etc. The use of tea garden farming and management equipment reduces the labor intensity of tea farmers and improves the accuracy and efficiency of operations.

[0003] A Chinese patent with publication number CN117501874B discloses a multifunctional tea garden farming management equipment, including a farming shell, and also including: a rotating shaft, which is rotatably installed in the farming shell, and a plurality of loosening knives are evenly distributed on the rotating shaft; and a tea garden farming mechanism, which is connected to the farming shell and is respectively connected to the weeding control box and the soil crushing control box, and the tea garden farming mechanism is also connected to the rotating shaft; wherein the tea garden farming mechanism includes a farming drive assembly, a weeding assembly, an area detection frame and a detector; the multifunctional tea garden farming management equipment of this invention can ensure that while loosening the soil, weeds in the farming area are effectively removed, realizing the integrated operation of loosening the soil and weeding, and the working status of loosening the soil and weed removal can be adjusted according to the amount of weeds, which is conducive to improving the effect of loosening the soil and weeding.

[0004] However, the soil in tea gardens is usually scattered with stones. When using the above equipment to turn the tea garden soil, if the soil loosening blade hits a large stone, it may cause damage to the blade. To this end, we provide a multifunctional tea garden farming management equipment to solve the above problem. Summary of the Invention

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0006] The purpose of the present invention is to provide a multifunctional tea garden farming management device, which detects hard objects in the soil through a detection component, thereby solving the problem that the tillage blades of existing tea garden farming management equipment are easily damaged when encountering hard objects.

[0007] To solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a multifunctional tea garden farming management device, comprising a main frame, a height adjustment component is arranged on the outside of the main frame, a tillage knife group and a drive component are installed on the inside of the main frame, and a spraying component is arranged on the inside of the main frame; The detection assembly includes a mounting shaft rotatably connected to the inside of the main frame, a plurality of probe knives are arranged in an axial array on the outside of the mounting shaft, both ends of the mounting shaft are fixedly connected to a toggle plate, both sides of the main frame are rotatably connected to a rotating seat, a pull spring is fixedly connected between the rotating seat and the corresponding toggle plate, one side of the main frame is fixedly connected to an arc guide rail, the side of the arc guide rail facing away from the main frame is fixedly connected to an arc electrode sheet, and the outside of one of the toggle plates is fixedly connected to a connector that matches the arc guide rail.

[0008] The present invention is further configured such that the height adjustment assembly includes two slide plates respectively fixedly connected to both sides of the main frame, the interior of the two slide plates are slidably connected with a slide seat, the tops of the two slide plates are fixedly connected with an electric cylinder, and the two slide seats are respectively fixedly connected to the output ends of the corresponding electric cylinders.

[0009] The present invention is further configured such that the tillage blade group includes a rotating shaft rotatably connected between two slides, a plurality of mounting seats are uniformly arrayed axially on the outside of the rotating shaft, and a plurality of tillage blades are radially installed on the inside of the mounting seats.

[0010] The present invention is further configured as follows: a drive assembly includes a drive motor fixedly connected to the top of the main frame, a sliding sleeve rotatably connected to the top of the main frame, and a mounting bracket fixedly connected to the inner side of one of the slides, the output end of the drive motor is fixedly connected to a driving bevel gear, the outside of the sliding sleeve is fixedly connected to a driven bevel gear meshed with the driving bevel gear, the inside of the sliding sleeve is slidingly sleeved with a hexagonal rod, the bottom of the hexagonal rod is fixedly connected to a rotating column, and the rotating column is rotatably connected to the inside of the mounting bracket, the bottom of the rotating column is fixedly connected to a first bevel gear, and the outside of the rotating shaft is fixedly connected to a second bevel gear meshed with the first bevel gear.

[0011] The present invention is further configured such that the spraying assembly includes a delivery pump fixedly connected to the rear end of the main frame, a medicine storage box, and a horizontal pipe fixedly connected to the rear end of the bottom of the main frame; a liquid extraction pipe is fixedly connected to the interior of the medicine storage box; a plurality of nozzles are installed in an axially uniform array on the bottom of the horizontal pipe; a first connecting pipe is connected between the input end of the delivery pump and the liquid extraction pipe, and a second connecting pipe is connected between the output end of the delivery pump and the input port of the horizontal pipe.

[0012] The present invention is further configured such that the connector includes a connecting plate fixedly connected to the side of the toggle plate facing away from the pull spring, and the end of the connecting plate facing the main frame is fixedly connected to a U-shaped groove plate slidably connected to the outside of the arc guide rail, and the inside of the U-shaped groove plate is fixedly connected to an elastic electrode sheet.

[0013] The present invention is further configured such that the front end of the main frame is fixedly connected to the connecting frame, the bottom of the main frame is rotatably connected to the moving wheels, the top of the main frame is fixedly connected to the top plate, and the top of the top plate is fixedly connected to the control box.

[0014] The present invention is further configured such that two baffles are fixedly connected to the interior of the main frame, and the tillage blade group is located between the two baffles.

[0015] The present invention is further configured such that the outer portion of the rotating shaft is rotatably connected to a protective cover, and the rotating column is rotatably connected to the inner portion of the protective cover, and the first bevel gear and the second bevel gear are both located inside the protective cover.

[0016] The present invention has the following beneficial effects: 1. The present invention prevents the lower end of the probe from hitting a stone, thereby causing the mounting shaft to rotate, and then the toggle plate rotates clockwise, thereby compressing the pull spring. At the same time, the toggle plate drives the connector to slide outside the arc-shaped guide rail, so that the elastic electrode sheet contacts the arc-shaped electrode sheet, thereby sending an electrical signal to the control box. Subsequently, the control box controls the two electric cylinders to raise the tillage blade group, thereby avoiding damage to the tillage blade and extending the service life of the tillage blade.

[0017] The present invention starts the driving motor, and then drives the sliding sleeve to rotate through the meshing driving bevel gear and the driven bevel gear, and then drives the first bevel gear to rotate in the protective cover through the hexagonal rod in the sliding sleeve, and then drives the rotating shaft to rotate through the second bevel gear, and then the soil can be turned over by multiple tillage blades outside the rotating shaft. At the same time, the tillage depth can be adjusted by adjusting the length of the extended output ends of the two electric cylinders.

[0018] The present invention starts a delivery pump, which then extracts the herbicide from the medicine storage box through a liquid extraction pipe and a first connecting pipe, then delivers the herbicide into the interior of a horizontal pipe through a second connecting pipe, and finally the herbicide is evenly sprayed onto the ground through multiple nozzles, thereby improving the weed control effect.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the overall back-end structure of the present invention.

[0023] Figure 3 It is a structural schematic diagram of the main frame of the present invention.

[0024] Figure 4 It is a schematic structural diagram of the driving assembly and tillage blade group of the present invention.

[0025] Figure 5 Schematic diagram of the internal structure of the protective cover of the present invention.

[0026] Figure 6 It is a schematic diagram of the explosion structure of the detection assembly of the present invention.

[0027] Figure 7 Schematic diagram of the structure of the electrical connector of the present invention.

[0028] Figure 8 for Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0029] In the accompanying drawings, the components represented by the reference numerals are as follows: 100, main frame; 101, connecting frame; 103, moving wheel; 104, top plate; 105, baffle; 200, detection assembly; 201, mounting shaft; 202, probe blade; 203, toggle plate; 204, electrical connector; 204a, connecting plate; 204b, U-shaped groove plate; 204c, elastic electrode sheet; 205, arc guide rail; 206, arc electrode sheet; 207, rotating seat; 208, pull spring; 300, height adjustment assembly; 301, slide plate; 302, slide seat; 303, electric cylinder; 400, tillage blade group; 401, rotating shaft ; 402, mounting seat; 403, tillage blade; 500, drive assembly; 501, drive motor; 502, sliding sleeve; 503, drive bevel gear; 504, driven bevel gear; 505, mounting frame; 506, hexagonal rod; 507, rotating column; 508, first bevel gear; 509, second bevel gear; 510, protective cover; 600, spray assembly; 601, delivery pump; 602, medicine storage box; 603, liquid extraction pipe; 604, first connecting pipe; 605, horizontal pipe; 606, second connecting pipe; 607, nozzle; 700, control box. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0033] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing the embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, the three-dimensional dimensions of length, width, and depth should be included.

[0034] Example 1 See also Figure 1 、 Figure 3 and Figures 6 to 8 The present invention is a multifunctional tea garden farming management device, comprising a main frame 100, a height adjustment component 300 is provided on the outside of the main frame 100, a tillage blade group 400 and a drive component 500 are installed inside the main frame 100, and a spraying component 600 is provided inside the main frame 100; The detection assembly 200 includes a mounting shaft 201 rotatably connected to the inside of the main frame 100, and a plurality of probe knives 202 are arranged axially on the outside of the mounting shaft 201. Both ends of the mounting shaft 201 are fixedly connected to a toggle plate 203, and both sides of the main frame 100 are rotatably connected to a rotating seat 207. A pulling spring 208 is fixedly connected between the rotating seat 207 and the corresponding toggle plate 203. One side of the main frame 100 is fixedly connected to an arc guide rail 205, and the side of the arc guide rail 205 facing away from the main frame 100 is fixedly connected to an arc electrode sheet 206. The outside of one of the toggle plates 203 is fixedly connected to an electrical connector 204 that cooperates with the arc guide rail 205. The probe knives 202 can be used to cut weeds on the ground and detect stones and the like in the soil. The toggle plate 203 can be pulled by pulling the spring 208 to drive the mounting shaft 201 to rotate, so that the probe knife 202 can be reset when it detaches from a hard object.

[0035] Specifically, the height adjustment assembly 300 includes two slide plates 301 fixedly connected to both sides of the main frame 100. The interior of the two slide plates 301 is slidably connected to a slide seat 302. The top of the two slide plates 301 is fixedly connected to an electric cylinder 303. The two slide seats 302 are respectively fixedly connected to the output ends of the corresponding electric cylinders 303. The two electric cylinders 303 can lift the tillage blade group 400 when the probe blade 202 encounters a hard object, thereby preventing the tillage blade 403 from being damaged. The front end of the main frame 100 is fixedly connected to the connecting frame 101, the bottom of the main frame 100 is rotatably connected to the moving wheel 103, the top of the main frame 100 is fixedly connected to the top plate 104, and the top of the top plate 104 is fixedly connected to the control box 700. The operation of the electric cylinder 303 and the drive motor 501 can be controlled by the set control box 700, and the present invention can be conveniently connected to the power device through the connecting frame 101.

[0036] Furthermore, the electrical connector 204 includes a connecting plate 204a fixedly connected to the side of the toggle plate 203 facing away from the pull spring 208. The end of the connecting plate 204a facing the main frame 100 is fixedly connected to a U-shaped groove plate 204b slidably connected to the outside of the arc-shaped guide rail 205. The interior of the U-shaped groove plate 204b is fixedly connected to an elastic electrode sheet 204c. The toggle plate 203 drives the electrical connector 204 to slide outside the arc-shaped guide rail 205, so that the elastic electrode sheet 204c contacts the arc-shaped electrode sheet 206, thereby transmitting an electrical signal to the control box 700. Two baffles 105 are fixedly connected to the interior of the main frame 100, and the tillage blade group 400 is located between the two baffles 105. The two baffles 105 can prevent debris from splashing.

[0037] The operating process of this embodiment is as follows: when the probe 202 encounters a stone, the lower end of the probe 202 is resisted, causing the mounting shaft 201 to rotate, and then the toggle plate 203 rotates clockwise, so that the pull spring 208 can be compressed, and at the same time, the toggle plate 203 drives the connector 204 to slide outside the arc guide rail 205, so that the elastic electrode sheet 204c contacts the arc electrode sheet 206, so that an electrical signal can be sent to the control box 700, and then the control box 700 controls the two electric cylinders 303 to make the tillage knife group 400 rise, thereby preventing the tillage blade 403 from being damaged.

[0038] Example 2 See also Figure 1 、 Figure 4 and Figure 5On the basis of the first specific embodiment, the driving assembly 500 includes a driving motor 501 fixedly connected to the top of the main frame 100, a sliding sleeve 502 rotatably connected to the top of the main frame 100, and a mounting bracket 505 fixedly connected to the inner side of one of the slides 302. The output end of the driving motor 501 is fixedly connected to a driving bevel gear 503, the outside of the sliding sleeve 502 is fixedly connected to a driven bevel gear 504 meshing with the driving bevel gear 503, the inside of the sliding sleeve 502 is slidably sleeved with a hexagonal rod 506, the bottom of the hexagonal rod 506 is fixedly connected to a rotating column 507, and the rotating column 507 is rotatably connected to the inside of the mounting bracket 505, the bottom of the rotating column 507 is fixedly connected to a first bevel gear 508, and the outside of the rotating shaft 401 is fixedly connected to a second bevel gear 509 meshing with the first bevel gear 508.

[0039] Specifically, the tillage blade group 400 includes a rotating shaft 401 rotatably connected between two slides 302 , a plurality of mounting seats 402 are evenly arrayed axially on the outside of the rotating shaft 401 , and a plurality of tillage blades 403 are radially installed inside the mounting seats 402 .

[0040] Furthermore, the external rotation of the rotating shaft 401 is connected to the protective cover 510, and the rotating column 507 is rotationally connected to the inside of the protective cover 510. The first bevel gear 508 and the second bevel gear 509 are both located inside the protective cover 510. The protective cover 510 can provide protection for the first bevel gear 508 and the second bevel gear 509.

[0041] The operating process of this embodiment is as follows: when the soil in the tea garden needs to be turned over, first start the driving motor 501, then drive the sliding sleeve 502 to rotate through the meshing driving bevel gear 503 and the driven bevel gear 504, then drive the first bevel gear 508 to rotate in the protective cover 510 through the hexagonal rod 506 in the sliding sleeve 502, and then drive the rotating shaft 401 to rotate through the second bevel gear 509, and then turn the soil through the multiple tillage blades 403 outside the rotating shaft 401. At the same time, the tillage depth can be adjusted by adjusting the length of the output ends of the two electric cylinders 303.

[0042] Example 3 See also Figure 2On the basis of specific embodiment one and specific embodiment two, the spray assembly 600 includes a delivery pump 601 fixedly connected to the rear end of the main frame 100, a medicine storage box 602 and a horizontal pipe 605 fixedly connected to the rear end of the bottom of the main frame 100. A liquid extraction pipe 603 is fixedly connected to the interior of the medicine storage box 602, and a plurality of nozzles 607 are installed in a uniform array along the axial direction at the bottom of the horizontal pipe 605. A first connecting pipe 604 is connected between the input end of the delivery pump 601 and the liquid extraction pipe 603, and a second connecting pipe 606 is connected between the output end of the delivery pump 601 and the input port of the horizontal pipe 605.

[0043] The operation process of this embodiment is as follows: when it is necessary to spray herbicides on the tea garden land, the delivery pump 601 is started, and then the delivery pump 601 extracts the herbicide in the medicine storage box 602 through the liquid extraction pipe 603 and the first connecting pipe 604, and then the herbicide is transported into the interior of the horizontal pipe 605 through the second connecting pipe 606. Finally, the herbicide is evenly sprayed onto the ground through multiple nozzles 607 to improve the weed control effect.

[0044] In addition, it should be noted that the components not described in detail herein are prior art.

[0045] It is important to note that the configuration and arrangement of the present application as shown in various exemplary embodiments are illustrative only. Although only a few embodiments are described in detail in this disclosure, those reading this disclosure should readily understand that many modifications are possible (e.g., variations in the size, scale, structure, shape, and proportions of various components, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of an element may be inverted or otherwise altered, and the nature, number, or position of discrete elements may be modified or changed. Other substitutions, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the present invention is not limited to a particular embodiment, but extends to a variety of modifications that still fall within the scope of the appended claims.

[0046] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention).

[0047] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

Claims

1. A multifunctional tea garden farming management device, characterized by: include, A main frame (100), wherein a height adjustment assembly (300) is provided on the outside of the main frame (100), a tillage blade group (400) and a drive assembly (500) are installed on the inside of the main frame (100), and a spraying assembly (600) is provided on the inside of the main frame (100); The detection assembly (200) includes a mounting shaft (201) rotatably connected to the inside of the main frame (100), a plurality of probe knives (202) are arranged in an axial array on the outside of the mounting shaft (201), both ends of the mounting shaft (201) are fixedly connected to a toggle plate (203), both sides of the main frame (100) are rotatably connected to a rotating seat (207), a pulling spring (208) is fixedly connected between the rotating seat (207) and the corresponding toggle plate (203), one side of the main frame (100) is fixedly connected to an arc guide rail (205), the side of the arc guide rail (205) facing away from the main frame (100) is fixedly connected to an arc electrode sheet (206), and the outside of one of the toggle plates (203) is fixedly connected to a connector (204) that matches the arc guide rail (205).

2. The multifunctional tea garden farming management equipment according to claim 1, characterized in that: The height adjustment assembly (300) comprises two slide plates (301) respectively fixedly connected to both sides of the main frame (100), the interiors of the two slide plates (301) are slidably connected to a slide seat (302), the tops of the two slide plates (301) are respectively fixedly connected to an electric cylinder (303), and the two slide seats (302) are respectively fixedly connected to the output ends of the corresponding electric cylinder (303).

3. The multifunctional tea garden farming management equipment according to claim 1, characterized in that: The tillage blade assembly (400) comprises a rotating shaft (401) rotatably connected between two slides (302); a plurality of mounting seats (402) are arranged uniformly along the axial direction on the outside of the rotating shaft (401); and a plurality of tillage blades (403) are radially mounted inside the mounting seats (402).

4. The multifunctional tea garden farming management equipment according to claim 3, characterized in that: The driving assembly (500) comprises a driving motor (501) fixedly connected to the top of the main frame (100), a sliding sleeve (502) rotatably connected to the top of the main frame (100), and a mounting frame (505) fixedly connected to the inner side of one of the slide seats (302); the output end of the driving motor (501) is fixedly connected to a driving bevel gear (503); the outside of the sliding sleeve (502) is fixedly connected to a driven bevel gear (504) meshing with the driving bevel gear (503); the inside of the sliding sleeve (502) is slidably sleeved with a hexagonal rod (506); the bottom of the hexagonal rod (506) is fixedly connected to a rotating column (507), and the rotating column (507) is rotatably connected to the inside of the mounting frame (505); the bottom of the rotating column (507) is fixedly connected to a first bevel gear (508); and the outside of the rotating shaft (401) is fixedly connected to a second bevel gear (509) meshing with the first bevel gear (508).

5. The multifunctional tea garden farming management equipment according to claim 1, characterized in that: The spraying assembly (600) comprises a delivery pump (601) fixedly connected to the rear end of the interior of the main frame (100), a medicine storage box (602), and a transverse pipe (605) fixedly connected to the rear end of the bottom of the main frame (100). A liquid extraction pipe (603) is fixedly connected to the interior of the medicine storage box (602). A plurality of spray heads (607) are uniformly arranged in an axial direction at the bottom of the transverse pipe (605). A first connecting pipe (604) is connected between the input end of the delivery pump (601) and the liquid extraction pipe (603). A second connecting pipe (606) is connected between the output end of the delivery pump (601) and the input port of the transverse pipe (605).

6. The multifunctional tea garden farming management equipment according to claim 1, characterized in that: The connector (204) comprises a connecting plate (204a) fixedly connected to the side of the toggle plate (203) facing away from the pulling spring (208); one end of the connecting plate (204a) facing the main frame (100) is fixedly connected to a U-shaped groove plate (204b) slidably connected to the outside of the arc guide rail (205); and an elastic electrode sheet (204c) is fixedly connected to the inside of the U-shaped groove plate (204b).

7. The multifunctional tea garden farming management equipment according to claim 1, characterized in that: The front end of the main frame (100) is fixedly connected to a connecting frame (101), the bottom of the main frame (100) is rotatably connected to a moving wheel (103), the top of the main frame (100) is fixedly connected to a top plate (104), and the top of the top plate (104) is fixedly connected to a control box (700).

8. The multifunctional tea garden farming management equipment according to claim 1, characterized in that: Two baffles (105) are fixedly connected to the interior of the main frame (100), and the tillage blade group (400) is located between the two baffles (105).

9. The multifunctional tea garden farming management equipment according to claim 4, characterized in that: The exterior of the rotating shaft (401) is rotatably connected to a protective cover (510), and the rotating column (507) is rotatably connected to the interior of the protective cover (510). Both the first bevel gear (508) and the second bevel gear (509) are located inside the protective cover (510).

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