Pesticide spraying unmanned aerial vehicle equipment with folding wings

Abstract

The invention belongs to the technical field of agricultural production equipment, and discloses pesticide spraying unmanned aerial vehicle equipment with folding wings, which comprises an unmanned aerial vehicle body, a pesticide storage box and an extraction assembly, and further comprises a spraying mechanism arranged at the bottom end of the extraction assembly; the spraying mechanism comprises two connecting pipes arranged at the bottom end of the extraction assembly, and the number of the connecting pipes is two. Flowing pesticide can drive an impeller, a first rotating rod and a second gear to rotate, the second gear can drive a chain and the first gear to rotate, the first gear can drive a spray head to rotate, then the pesticide pushing the impeller to rotate enters a connecting pipe along the chain, and then the pesticide can be sprayed out of the rotating spray head. Finally, the impeller drives the spray head to rotate through flowing pesticide, the spraying range of the spray head is enlarged, the pesticide can cover all corners of crops more evenly and more comprehensively, waste of the pesticide is effectively avoided, and the utilization rate of the pesticide is greatly increased.

Description

Technical Field

[0001] The invention belongs to the technical field of agricultural production equipment, and in particular is a pesticide spraying unmanned aerial vehicle equipment with folding wings. Background Art

[0002] Pesticide spraying drone equipment is a modern equipment used for agricultural plant protection that utilizes drone technology and combines pesticide spraying function.

[0003] At present, traditional pesticide spraying drone equipment mainly relies on controllers for control. Through precise instructions, the wings around the drone are driven to unfold and rotate at high speed, thereby generating lift so that the entire equipment can fly stably over the fields and move freely in the preset routes. At the same time, it drives the spraying components to carry out precise spraying operations on crops.

[0004] However, in actual use, this type of drone has a significant limitation, that is, the spray head of the spraying component is usually fixed on the connecting pipe. This fixed design directly limits the spraying range, and it is difficult for pesticides to cover every corner of the crops more evenly and comprehensively, especially those areas with dense growth or complex structures. This uneven spraying not only causes serious waste of pesticides, increases agricultural production costs, but also greatly reduces the effective utilization rate of pesticides. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides a pesticide spraying UAV equipment with folding wings.

[0006] To achieve the above object, the present invention provides the following technical solution: A pesticide spraying drone device with folding wings, comprising a drone body, a medicine storage box and an extraction component, and also comprising: A spraying mechanism disposed at the bottom end of the extraction assembly; Wherein, the spraying mechanism comprises a connecting pipe arranged at the bottom end of the extraction component, and the number of the connecting pipes is two, the bottom ends of the two connecting pipes are rotatably connected with a spray head, a gear 1 is fixedly installed on the surface of the spray head, a fixed box is arranged on the top end of the connecting pipe, and the output end of the extraction component is connected to the fixed box through a hose, an impeller is rotatably connected inside the fixed box, a rotating rod 1 is fixedly installed at the bottom end of the impeller, a gear 2 is fixedly installed at the bottom end of the impeller, and a chain is connected to the surface of the gear 1 and the gear 2; The stirring mechanism is arranged on the top of the fixed box.

[0007] Preferably, it also includes: The swinging mechanism is arranged at the bottom end of the medicine storage box. The swinging mechanism includes a mounting plate fixedly connected to the bottom end of the medicine storage box. On the opposite sides of the two connecting pipes, two connecting rods are fixedly installed respectively. On the opposite sides of the two connecting rods, two hinge rods are hinged respectively. On one side of the mounting plate, a motor is fixedly installed. The output end of the motor is fixedly installed with a driving plate. One ends of the two hinge rods are hinged through a hinge block. On one side of the hinge block, a connecting ring is fixedly installed. On one side of the driving plate, a convex block located inside the connecting ring is fixedly installed.

[0008] Preferably, the stirring mechanism includes a transmission component fixedly connected to the top end of the fixed box, and the transmission component is connected to the fixed box. A worm is slidably sleeved on the surface of the transmission component. The top end inside the medicine storage box is rotatably connected with a second rotating rod. On the surface of the second rotating rod, a stirring rod and a cleaning plate are fixedly installed respectively. At the bottom end of the second rotating rod, a worm gear is fixedly installed.

[0009] Preferably, it further includes: A reset component is arranged at the bottom end of the UAV body. The reset component includes a sliding sleeve fixedly connected to the bottom end of the UAV body, and the sliding sleeve is located on the surface of the connecting pipe. Inside the sliding sleeve, a sliding block located on the surface of the connecting pipe is slidably connected.

[0010] Preferably, the sliding block and the sliding sleeve are elastically connected through an elastic member. The number of the elastic members is two, and the two elastic members are symmetrically designed horizontally with respect to the connecting pipe.

[0011] Preferably, a limiting plate located inside the connecting ring is fixedly installed on one side of the mounting plate, and the connecting ring can slide on the surface of the limiting plate.

[0012] Preferably, a limiting ring located on the surface of the first rotating rod is rotatably connected inside the connecting rod, and the surface of the limiting ring is in contact with the inner wall of the connecting rod.

[0013] Preferably, a limiting groove is formed inside the worm, and a connecting block located inside the limiting groove is fixedly installed on the surface of the transmission component.

[0014] Preferably, the convex block is designed as a cylinder and is smooth. The surface of the convex block is in contact with the inside of the connecting ring.

[0015] Preferably, a baffle is arranged on one side of the hinge block, and the surface of the baffle is in contact with the surface of the hinge rod.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: In the present invention, by providing a driving extraction component, the hose connected to the extraction component will extract the pesticide inside the medicine storage tank, and the pesticide will enter the fixed box. Moreover, the flowing pesticide will drive the impeller, the first rotating rod, and the second gear to rotate. The second gear will drive the chain and the first gear to rotate. The first gear will drive the nozzle to rotate. Then, the pesticide that pushes the impeller to rotate will enter the inside of the connecting pipe along the chain. Then, the pesticide will be sprayed out from the rotating nozzle. Finally, the flowing pesticide causes the impeller to drive the nozzle to rotate, increasing the spraying range of the nozzle, enabling the pesticide to cover every corner of the crops more evenly and comprehensively, effectively avoiding the waste of pesticide, and greatly improving the utilization rate of the pesticide. In the present invention, the driving motor causes the driving plate and the convex block to rotate. The convex block will drive the connecting ring and the hinge block to move up and down. The hinge block will drive the two hinge rods to rotate. The hinge rods will drive the connecting pipe and the nozzle to move reciprocally. Finally, the driving motor causes the connecting pipe and the nozzle to move reciprocally, thereby forming a wavy spraying path during the reciprocating movement of the nozzle, enabling the liquid medicine to cover different heights of the crop canopy, such as the top leaves, the middle stems, and the lower roots, ensuring that the crops are evenly medicated. In the present invention, during the rotation of the impeller, it will be linked to the transmission component. The transmission component will drive the worm to rotate. The worm will further drive the worm wheel, the second rotating rod, the stirring rod, and the cleaning plate to rotate. The rotating stirring rod will effectively stir the various pesticides stored inside the medicine storage tank, enabling these pesticides to be fully mixed and evenly combined, thereby exerting the best pesticide effect. At the same time, the surface of the cleaning plate component is closely attached to the inner wall of the medicine storage tank. When the cleaning plate rotates, it can scrape off the pesticide residues adhering to the inner wall of the medicine storage tank one by one. This design greatly facilitates the subsequent cleaning work of the medicine storage tank container by the operator, ensures the cleanliness of the container, and makes full preparations for the next pesticide mixing and spraying operation. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic cross-sectional view of the medicine storage tank of the present invention; Figure 3 is a schematic cross-sectional view of the sliding sleeve of the present invention; Figure 4 is a schematic diagram showing the spraying mechanism of the present invention; Figure 5 is a schematic diagram showing the stirring mechanism of the present invention; Figure 6 is a schematic cross-sectional view of the worm of the present invention; Figure 7 is a schematic cross-sectional view of the hinge rod of the present invention; Figure 8 is a schematic cross-sectional view of the driving plate of the present invention; Figure 9Schematic diagram of the sectional connection ring of the present invention.

[0018] In the figure: 1, UAV body; 2, medicine storage tank; 3, extraction component; 4, spraying mechanism; 401, connecting pipe; 402, nozzle; 403, gear one; 404, fixed box; 405, impeller; 406, rotating rod one; 407, gear two; 408, chain; 5, stirring mechanism; 501, transmission component; 502, worm; 503, rotating rod two; 504, stirring rod; 505, cleaning plate; 506, worm gear; 6, swinging mechanism; 601, mounting plate; 602, motor; 603, connecting rod; 604, hinged rod; 605, hinge block; 606, driving plate; 607, connecting ring; 608, convex block; 7, reset component; 701, sliding sleeve; 702, slider; 8, elastic member; 9, limiting plate; 10, limiting ring; 11, limiting groove; 12, connecting block. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] As Figures 1 to 9 shown, the present invention provides a pesticide spraying UAV device with folding wings, including a UAV body 1, a medicine storage tank 2 and an extraction component 3, and further including: A spraying mechanism 4, which is arranged at the bottom end of the extraction component 3; Among them, the spraying mechanism 4 includes a connecting pipe 401 arranged at the bottom end of the extraction component 3, and the number of the connecting pipes 401 is two. The bottom ends of the two connecting pipes 401 are rotatably connected with a nozzle 402. A gear one 403 is fixedly installed on the surface of the nozzle 402. A fixed box 404 is arranged at the top end of the connecting pipe 401, and the output end of the extraction component 3 is connected with the fixed box 404 through a hose. An impeller 405 is rotatably connected inside the fixed box 404. A rotating rod one 406 is fixedly installed at the bottom end of the impeller 405. A gear two 407 is fixedly installed at the bottom end of the impeller 405. A chain 408 is in transmission connection on the surfaces of the gear one 403 and the gear two 407; A stirring mechanism 5, which is arranged at the top end of the fixed box 404.

[0021] The above scheme is adopted: the operator injects a variety of pesticides and water into the medicine storage box 2 in proportion, and then the wings around the drone body 1 can be driven by the remote control to unfold and rotate, and the wings around the drone body 1 are staggered, so that the wings can be stored, and then the wings can be driven to make the whole device fly at the top of the field. During the flight, the extraction component 3 is driven, and the hose connected to the extraction component 3 will extract the pesticide in the medicine storage box 2, and the pesticide will enter the fixed box 404, and the flowing pesticide will contact the fan blades on the surface of the impeller 405, thereby driving the impeller 405 to rotate, and the impeller 405 will drive When the rotating rod 406 rotates, the rotating rod 406 will drive the gear 2 407 to rotate. Since the gear 2 407 is connected to the nozzle 402 through the chain 408, the rotating gear 2 407 will drive the chain 408 and the gear 1 403 to rotate, and the gear 1 403 will drive the nozzle 402 to rotate. Then, the pesticide that drives the impeller 405 to rotate will enter the interior of the connecting pipe 401 along the chain 408, and then the pesticide will be sprayed out from the rotating nozzle 402, thereby increasing the spraying range of the pesticide. When the impeller 405 rotates, it will drive the stirring mechanism 5, thereby being able to stir the pesticide inside the medicine storage box 2, so that multiple pesticides are fully combined.

[0022] like Figure 7 and Figure 8 As shown, it also includes: The swing mechanism 6 is arranged at the bottom end of the medicine storage box 2. The swing mechanism 6 includes a mounting plate 601 fixedly connected to the bottom end of the medicine storage box 2. Two connecting rods 603 are fixedly installed on opposite sides of the two connecting tubes 401. Two hinged rods 604 are hinged on opposite sides of the two connecting rods 603. A motor 602 is fixedly installed on one side of the mounting plate 601. A driving plate 606 is fixedly installed on the output end of the motor 602. One end of the two hinged rods 604 are hinged through a hinge block 605. A connecting ring 607 is fixedly installed on one side of the hinge block 605. A protrusion 608 located inside the connecting ring 607 is fixedly installed on one side of the driving plate 606.

[0023] The above scheme is adopted: through the design of the swing mechanism 6, during the process of the nozzle 402 rotating to spray pesticides, the motor 602 can be driven to rotate the driving plate 606, and the driving plate 606 will drive the protrusion 608 to slide inside the connecting ring 607, and during the sliding process, it will drive the connecting ring 607 and the hinge block 605 to move up and down. Since one end of the two hinged rods 604 is hinged through the hinge block 605, when the hinge block 605 moves, it will drive the two hinged rods 604 to rotate, and when the hinge rod 604 rotates, it will drive the connecting pipe 401 and the nozzle 402 to move back and forth, ensuring that the crops are evenly sprayed with pesticides.

[0024] like Figure 5 and Figure 6As shown in the figure, the stirring mechanism 5 includes a transmission component 501 fixedly connected to the top end of the fixed box 404, and the transmission component 501 is connected to the fixed box 404. A worm 502 is slidably sleeved on the surface of the transmission component 501. The top end inside the medicine storage box 2 is rotatably connected to a second rotating rod 503. Stirring rods 504 and cleaning plates 505 are respectively fixedly installed on the surface of the second rotating rod 503. A worm gear 506 is fixedly installed at the bottom end of the second rotating rod 503.

[0025] Adopting the above solution: Through the design of the stirring mechanism 5, during the rotation of the impeller 405, the transmission component 501 will be linked, and the transmission component 501 will drive the worm 502 to rotate. Since the worm 502 meshes with the worm gear 506, the worm 502 will drive the worm gear 506 to rotate. The worm gear 506 will drive the second rotating rod 503 to rotate. The second rotating rod 503 will drive the stirring rods 504 and the cleaning plates 505 to rotate. The rotating stirring rods 504 will stir the pesticides inside the medicine storage box 2, so that various pesticides are fully combined. And the surface of the cleaning plate 505 is attached to the inner wall of the medicine storage box 2. Furthermore, when it rotates, it will scrape off the pesticide residues attached to the inner wall of the medicine storage box 2, which is convenient for the operator to clean the medicine storage box 2.

[0026] As Figure 2 and Figure 4 shown, it further includes: A reset component 7, which is arranged at the bottom end of the UAV body 1. The reset component 7 includes a sliding sleeve 701 fixedly connected to the bottom end of the UAV body 1, and the sliding sleeve 701 is located on the surface of the connecting pipe 401. A slider 702 located on the surface of the connecting pipe 401 is slidably connected inside the sliding sleeve 701.

[0027] Adopting the above solution: Through the design of the reset component 7, when the connecting pipe 401 reciprocates, it will drive the slider 702 to slide inside the sliding sleeve 701. Since the surface of the slider 702 is attached to the inner wall of the sliding sleeve 701, the sliding sleeve 701 can support and limit the slider 702 and the connecting pipe 401.

[0028] As Figure 4 and Figure 8 shown, the slider 702 and the sliding sleeve 701 are elastically connected by an elastic member 8. The number of the elastic members 8 is two, and the two elastic members 8 are symmetrically designed horizontally with respect to the connecting pipe 401. A limiting plate 9 located inside the connecting ring 607 is fixedly installed on one side of the mounting plate 601, and the connecting ring 607 can slide on the surface of the limiting plate 9.

[0029] The above scheme is adopted: through the design of the elastic member 8, when the slider 702 and the connecting tube 401 move back and forth, the elastic member 8 will be stretched and compressed, and the resilience of the elastic member 8 can assist the slider 702 and the connecting tube 401 to reset, thereby reducing the load of the motor 602 and providing convenience for the reset of the connecting tube 401. Through the design of the limit plate 9, when the driving plate 606 pushes the connecting ring 607 to move up and down, the connecting ring 607 will slide along the surface of the limit plate 9, and the limit plate 9 can limit the moving trajectory of the connecting ring 607.

[0030] like Figure 6 and Figure 7 As shown, the internal rotation of the connecting rod 603 is connected to a limiting ring 10 located on the surface of the rotating rod 406, and the surface of the limiting ring 10 is in contact with the inner wall of the connecting rod 603, a limiting groove 11 is provided inside the worm 502, and a connecting block 12 located inside the limiting groove 11 is fixedly installed on the surface of the transmission assembly 501.

[0031] The above scheme is adopted: through the design of the limit ring 10, during the rotation of the rotating rod 406, the limit ring 10 will be driven to rotate. Since the surface of the limit ring 10 is in contact with the inner wall of the connecting rod 603, when the limit ring 10 rotates, it can support the rotating rod 406 to ensure that the rotating rod 406 can rotate stably. Through the design of the limit groove 11 and the connecting block 12, when the swing mechanism 6 drives the connecting tube 401 to move back and forth, the transmission assembly 501 can move inside the worm 502, and the connecting block 12 can slide inside the limit groove 11. Through the cooperation between the limit groove 11 and the connecting block 12, the transmission assembly 501 will continue to drive the worm 502 to rotate when it moves.

[0032] like Figure 8 As shown, the protrusion 608 is cylindrical in design and is smooth in design. The surface of the protrusion 608 fits with the inside of the connecting ring 607 . A baffle is provided on one side of the hinge block 605 , and the surface of the baffle fits with the surface of the hinge rod 604 .

[0033] The above scheme is adopted: through the design of the protrusion 608, since the protrusion 608 is cylindrical in design and smooth in design, it can move smoothly inside the connecting ring 607. Through the design of the hinge block 605, since the hinge block 605 is provided with a baffle, the connecting ring 607 and the baffle cooperate with each other to limit the hinge block 605, so as to avoid the hinge rod 604 from being separated from the surface of the hinge block 605 when the hinge rod 604 rotates.

[0034] The working principle and use process of the present invention: First, the operator injects various pesticides and water into the interior of the medicine storage tank 2 according to a ratio. Then, the operator can drive the fan blades around the UAV body 1 to rotate through a remote control, so that the entire device flies at the top of the field. During the flight, the extraction assembly 3 is driven. The hose connected to the extraction assembly 3 will extract the pesticides inside the medicine storage tank 2, and the pesticides will enter the interior of the fixed box 404. The flowing pesticides will drive the impeller 405, the first rotating rod 406, and the second gear 407 to rotate. The second gear 407 will drive the chain 408 and the first gear 403 to rotate. The first gear 403 will drive the nozzle 402 to rotate. Then, the pesticides that push the impeller 405 to rotate will enter the interior of the connecting pipe 401 along the chain 408, and then the pesticides will be sprayed out from the rotating nozzle 402, thereby increasing the spraying range of the pesticides. Next, during the rotation of the impeller 405, the transmission assembly 501 will be linked. The transmission assembly 501 will drive the worm 502 to rotate. The worm 502 will drive the worm gear 506, the second rotating rod 503, the stirring rod 504, and the cleaning plate 505 to rotate. The rotating stirring rod 504 will stir the pesticides inside the medicine storage tank 2, so that various pesticides are fully combined. And the surface of the cleaning plate 505 is attached to the inner wall of the medicine storage tank 2. The rotating cleaning plate 505 will scrape off the pesticide residues attached to the inner wall of the medicine storage tank 2, thereby facilitating the operator to clean the medicine storage tank 2. At the same time, during the process of the nozzle 402 rotating to spray pesticides, the motor 602 can be driven to rotate the driving plate 606 and the convex block 608. The convex block 608 will drive the connecting ring 607 and the hinge block 605 to move up and down. The hinge block 605 will drive the two hinge rods 604 to rotate. The hinge rods 604 will drive the connecting pipe 401 and the nozzle 402 to move reciprocally, ensuring that the crops are evenly treated with pesticides, and finally completing the operation process.

[0035] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pesticide spraying drone device with folding wings, comprising a drone body (1), a pesticide storage box (2) and an extraction component (3), characterized in that: Also includes: A spraying mechanism (4) disposed at the bottom end of the extraction component (3); The spray mechanism (4) comprises a connecting pipe (401) arranged at the bottom end of the extraction component (3), and the number of the connecting pipes (401) is two, the bottom ends of the two connecting pipes (401) are rotatably connected to a spray head (402), a gear 1 (403) is fixedly installed on the surface of the spray head (402), a fixed box (404) is arranged at the top end of the connecting pipe (401), and the output end of the extraction component (3) is connected to the fixed box (404) through a hose, an impeller (405) is rotatably connected inside the fixed box (404), a rotating rod 1 (406) is fixedly installed at the bottom end of the impeller (405), a gear 2 (407) is fixedly installed at the bottom end of the impeller (405), and a chain (408) is transmission-connected between the surfaces of the gear 1 (403) and the gear 2 (407); The stirring mechanism (5) is arranged at the top of the fixed box (404).

2. The pesticide spraying drone equipment with folding wings according to claim 1, characterized in that: Also includes: A swing mechanism (6) is arranged at the bottom end of the medicine storage box (2), the swing mechanism (6) comprising a mounting plate (601) fixedly connected to the bottom end of the medicine storage box (2), two connecting rods (603) are fixedly installed on opposite sides of the two connecting tubes (401), two hinged rods (604) are hinged on opposite sides of the two connecting rods (603), a motor (602) is fixedly installed on one side of the mounting plate (601), a driving plate (606) is fixedly installed on the output end of the motor (602), one end of the two hinged rods (604) are hinged through a hinge block (605), a connecting ring (607) is fixedly installed on one side of the hinge block (605), and a protrusion (608) located inside the connecting ring (607) is fixedly installed on one side of the driving plate (606).

3. The pesticide spraying drone with folding wings according to claim 1 is characterized by: The stirring mechanism (5) comprises a transmission assembly (501) fixedly connected to the top of the fixed box (404), and the transmission assembly (501) is connected to the fixed box (404), a worm (502) is slidably sleeved on the surface of the transmission assembly (501), a second rotating rod (503) is rotatably connected to the top of the medicine storage box (2), a stirring rod (504) and a cleaning plate (505) are respectively fixedly mounted on the surface of the second rotating rod (503), and a worm gear (506) is fixedly mounted on the bottom end of the second rotating rod (503).

4. The pesticide spraying drone equipment with folding wings according to claim 1, characterized in that: Also includes: A reset component (7) is arranged at the bottom end of the drone body (1), the reset component (7) comprising a sliding sleeve (701) fixedly connected to the bottom end of the drone body (1), the sliding sleeve (701) being located on the surface of the connecting tube (401), and the interior of the sliding sleeve (701) being slidably connected to a slider (702) located on the surface of the connecting tube (401).

5. The pesticide spraying drone with folding wings according to claim 4 is characterized by: The sliding block (702) and the sliding sleeve (701) are elastically connected via an elastic member (8), the number of the elastic members (8) is two, and the two elastic members (8) are designed to be transversely symmetrical with respect to the connecting tube (401).

6. The pesticide spraying drone with folding wings according to claim 2, characterized in that: A limiting plate (9) located inside the connecting ring (607) is fixedly mounted on one side of the mounting plate (601), and the connecting ring (607) is capable of sliding on the surface of the limiting plate (9).

7. The pesticide spraying drone with folding wings according to claim 2, characterized in that: The connection rod (603) is internally rotatably connected to a limiting ring (10) located on the surface of the rotating rod (406), and the surface of the limiting ring (10) and the inner wall of the connection rod (603) are in contact with each other.

8. The pesticide spraying drone with folding wings according to claim 3 is characterized by: A limiting groove (11) is provided inside the worm (502), and a connecting block (12) located inside the limiting groove (11) is fixedly mounted on the surface of the transmission assembly (501).

9. The pesticide spraying drone with folding wings according to claim 2, characterized in that: The protrusion (608) is cylindrical in design and is smooth in design, and the surface of the protrusion (608) fits the inside of the connecting ring (607).

10. The pesticide spraying drone with folding wings according to claim 2, characterized in that: A baffle is provided on one side of the hinge block (605), and the surface of the baffle is in contact with the surface of the hinge rod (604).

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