A self-adaptive intelligent pitaya picker

Abstract

The present invention discloses a pitaya self-adaptive intelligent picker, which belongs to the technical field of pitaya pickers, and comprises a frame, a connection port is arranged on the side of the frame, a knife holder is arranged on the top of the frame, a clamping device is arranged on the surface of the frame, the clamping device comprises an arc sleeve, a middle cylinder is rotatably connected to the surface of the rotating shaft, a torsion spring rod is arranged inside the middle cylinder, and the top of the torsion spring rod is fixedly connected to the surface of the rotating shaft. The present invention rotates the outer drum and the middle drum together on the rotating shaft through the clamping device, and the rotation of the outer drum is transmitted through the linkage mechanism of the middle drum and the rotating shaft, so that the rotating shaft rotates under the constraint of the limit block, and the elasticity of the belt allows them to adjust the length according to the shape of the fruit, ensuring that the fruit is completely wrapped, realizing the fast, accurate and safe clamping and cutting operation of the fruit, and greatly improving the work efficiency and safety.

Description

Technical Field

[0001] The invention relates to the technical field of pitaya pickers, and in particular to a self-adaptive intelligent pitaya picker. Background Art

[0002] Pitaya is a perennial climbing succulent plant. The plant has no taproot, and the lateral roots are distributed in the shallow soil layer. There are also many aerial roots that can climb and grow. The rhizome is dark green, thick, and has three edges. The fruit is oblong or oval, with red epidermis and ovate scales with sharp tips. The fruit is 10-12 cm long, and the flesh is white or red. When pitaya is picked manually, it is generally necessary to cut off part of the fleshy stem to extend the storage and transportation time of the fruit. The fleshy stem of pitaya is fat, and there are small thorns in the depression of the stem node. The pitaya grows at the stem node, so the manual picking range is small and it is easy to damage the fruit. Mechanized picking is difficult. At present, there is no mature pitaya picking equipment in use. Various planting bases are still mainly manual picking, and the level of automation is still low.

[0003] Chinese patent CN115280973A discloses a pitaya fruit picking actuator, which includes a frame assembly, a linear drive mechanism, a connecting rod mechanism, a cutter mechanism and a sensor positioning mechanism. The frame assembly includes two relatively arranged brackets, and the top ends of the two brackets are fixedly connected to a mounting plate fixedly mounted on a mechanical arm. The pitaya fruit picking actuator is driven by a driving cylinder, and the driving element moves quickly and the fruit produces less slippage. In the above application documents, since the parts for clamping the fruit are hardware, when encountering different sizes or protrusions on the surface of the fruit, it is easy to cause certain damage to the surface of the fruit during the clamping process. At the same time, in the existing clamps, it is difficult to clamp the fruit in a segmented wrapping manner. Summary of the invention

[0004] In order to solve the problem in the prior art that the parts for clamping the fruit use hardware, when encountering fruits of different sizes or there are protrusions on the surface of the fruit, it is easy to cause certain damage to the surface of the fruit during the clamping process, and it is difficult to clamp the fruit in a segmented wrapping manner in the existing clamps. Therefore, the present invention proposes a pitaya adaptive intelligent picker that can adapt to fruits of different sizes and reduce damage to the surface of the fruit.

[0005] A pitaya adaptive intelligent picker comprises a frame, a side of the frame is equipped with a connection port, and a top of the frame is equipped with a knife holder;

[0006] The surface of the frame is provided with a clamping device, and the clamping device includes an arc-shaped sleeve, a rotating shaft is installed on the side of the arc-shaped sleeve, the surface of the rotating shaft is rotatably connected to the middle cylinder, the interior of the middle cylinder is equipped with a torsion spring rod, the top of the torsion spring rod is fixedly connected to the surface of the rotating shaft, the bottom surface of the torsion spring rod is fixedly connected to the inner bottom of the middle cylinder, the surface of the middle cylinder is frictionally connected to an outer roller, a belt is wrapped around the surface of the outer roller, the side of the belt away from the outer roller passes through the inner wall of the arc-shaped sleeve, a groove is provided inside the outer roller, a positioning block is fixedly connected to the inner bottom of the groove, one end of the positioning block is equipped with a nut, and the other end of the positioning block is equipped with a clamping block, the interior of the clamping block is rotatably connected to a roller, and a sliding groove is provided inside the frame.

[0007] Furthermore, a tightening device is provided on the side of the frame, and the tightening device comprises a tooth block, the surface of the tooth block is fixedly connected to the bottom of the frame, and the surface of the tooth block is equipped with a one-way gear.

[0008] Furthermore, the upper and lower ends of the rotating shaft are rotatably connected to limit blocks, the surface of the limit blocks is fixedly connected to the surface of the arc sleeve, and the two ends of the rotating shaft are rotatably connected to the limit blocks, and the limit blocks are fixedly connected to the arc sleeve. Therefore, the rotation range of the rotating shaft is limited to the area determined by the two limit blocks and the arc sleeve, ensuring that the rotating shaft will not exceed the predetermined range during movement, thereby ensuring the safety and stability of the entire mechanical structure.

[0009] Furthermore, a rubber pad is fixedly connected to the surface of the middle cylinder, and the rubber pad and the roller are fitted together. The design of fixing the rubber pad on the surface of the middle cylinder and fitting together with the roller can not only improve the stability and reliability of the equipment, reduce noise, and protect the equipment from wear and damage, but also improve the sealing and adaptability of the equipment.

[0010] Furthermore, the belt is integrally assembled with five groups, and each group is evenly assembled on the surface of the arc sleeve. The belt is made of soft rubber material as a whole, and adopts a vinyl ethylene copolymer model. By adopting the vinyl ethylene copolymer material, the belt has excellent elasticity, which enables the belt to quickly return to its original state when subjected to external force, reducing deformation and aging caused by long-term use.

[0011] Furthermore, a threaded rod is rotatably connected to the top of the positioning block, and one end of the threaded rod away from the positioning block penetrates and is rotatably connected to the surface of the outer drum. Since the threaded rod and the outer drum are threadedly connected, the position of the threaded rod relative to the outer drum can be accurately adjusted by rotating the threaded rod. The positioning block provides a stable support point for the threaded rod, ensuring that the threaded rod will not shake or deviate from a predetermined trajectory during the adjustment process, thereby maintaining the stability and reliability of the entire device.

[0012] Furthermore, a round rod is assembled between the clamping block and the nut, and the internal thread of the nut is connected to the surface of the threaded rod, which provides advantages such as adjustability, fixing stability, adaptability and ease of operation. When the device needs to clamp or fix an object, the clamping block and the nut are connected by the round rod to ensure that the clamping block can slide and be fixed on the threaded rod.

[0013] Furthermore, an electric slide rod is fixedly connected to the interior of the slide groove, and the surface of the arc sleeve is slidably connected to the surface of the electric slide rod. The arc sleeve is slidably connected to the electric slide rod, so that during the process of clamping the fruit, the arc sleeve can remain stable without shaking or shifting. Under the guidance of the electric slide rod, the arc sleeve can accurately approach or move away from the fruit, thereby achieving precise clamping and releasing operations.

[0014] Furthermore, the one-way gear and the tooth block are meshed with each other, and a connecting rod is installed on the top of the one-way gear. The top of the connecting rod passes through and is fixedly connected to the bottom surface of the rotating shaft. The one-way gear is meshed with the tooth block and the one-way gear is connected to the rotating shaft, and the one-way transmission function is realized through the meshing of the one-way gear and the tooth block and the connection of the one-way gear and the rotating shaft. The one-way transmission function can prevent reverse rotation or avoid accidental rotation caused by inertia, load and other factors.

[0015] The difference from the prior art is that the beneficial effects of this application are:

[0016] (1) The intelligent pitaya picker rotates on the rotating shaft together with the outer drum and the middle drum in the clamping device. The rotation of the outer drum is transmitted through the linkage mechanism of the middle drum and the rotating shaft, so that the rotating shaft rotates under the constraint of the limit block. The elasticity of the belts allows them to adjust their length according to the shape of the fruit, ensuring that the clamping force of each belt is the same, ensuring that the fruit is completely wrapped, and realizing fast, accurate and safe clamping and cutting operations on the fruit, greatly improving work efficiency and safety.

[0017] (2) The intelligent dragon fruit picker achieves an efficient, smooth and accurate resetting process through the coordinated work of components such as the electric slide bar, torsion spring rod and one-way gear, thereby improving the overall performance and efficiency of the equipment, helping the torsion spring rod to reset, and ensuring that the arc sleeve can smoothly and quickly return to its original position after cutting the fruit, ready for the next operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0019] Figure 1It is a schematic diagram of the overall appearance structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the overall appearance of the side structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the overall appearance of the rear view structure of the present invention;

[0022] Figure 4 It is a partial structural schematic diagram of the clamping device of the present invention;

[0023] Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle;

[0024] Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle;

[0025] Figure 7 It is a schematic diagram of the internal cross-sectional structure of the outer drum of the present invention;

[0026] Figure 8 For the present invention Figure 7 The enlarged structural diagram at C in the middle;

[0027] Fig. 9 It is a partial enlarged structural schematic diagram of the tightening device of the present invention;

[0028] Fig.10 It is a schematic diagram of the initial release structure of the present invention;

[0029] Fig.11 It is a schematic diagram of the force release structure of the present invention;

[0030] Fig.12 It is a schematic diagram of the initial tightening structure of the present invention;

[0031] Fig.13 It is a schematic diagram of the force-receiving and tightening structure of the present invention.

[0032] In the figure:

[0033] 100, frame; 200, connection port; 300, tool holder;

[0034] 400, clamping device; 401, arc sleeve; 402, rotating shaft; 403, limit block; 404, middle cylinder; 405, torsion spring rod; 406, rubber pad; 407, outer drum; 408, belt; 409, groove; 410, positioning block; 411, nut; 412, threaded rod; 413, clamping block; 414, roller; 415, round rod; 416, slide groove; 417, electric slide rod;

[0035] 500, tightening device; 503, tooth block; 504, one-way gear; 505, connecting rod. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only embodiments of a part of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0037] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application are described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0038] In this application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "center", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0039] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0040] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. Example

[0042] See also Figure 1-Figure 13 As shown in the figure, a pitaya adaptive intelligent picker includes a frame 100, a connecting port 200 is installed on the side of the frame 100, and a knife holder 300 is installed on the top of the frame 100;

[0043] The surface of the frame 100 is provided with a clamping device 400, and the clamping device 400 includes an arc-shaped sleeve 401, and a rotating shaft 402 is installed on the side of the arc-shaped sleeve 401. The surface of the rotating shaft 402 is rotatably connected to a middle cylinder 404, and the upper and lower ends of the rotating shaft 402 are rotatably connected to limit blocks 403. The surface of the limit blocks 403 is fixedly connected to the surface of the arc-shaped sleeve 401. Both ends of the rotating shaft 402 are rotatably connected to the limit blocks 403, and the limit blocks 403 are fixedly connected to the arc-shaped sleeve 401. Therefore, the rotation range of the rotating shaft 402 is limited to the area determined by the two limit blocks 403 and the arc-shaped sleeve 401, ensuring that the rotating shaft 402 will not exceed the predetermined range during the movement, thereby ensuring the safety of the entire mechanical structure. In order to improve the stability and reliability of the equipment, a torsion spring rod 405 is installed inside the middle cylinder 404. The top of the torsion spring rod 405 is fixedly connected to the surface of the rotating shaft 402. The bottom surface of the torsion spring rod 405 is fixedly connected to the inner bottom of the middle cylinder 404. The surface of the middle cylinder 404 is frictionally connected to the outer roller 407. The surface of the middle cylinder 404 is fixedly connected to a rubber pad 406. The rubber pad 406 and the roller 414 fit each other. The design of fixing the rubber pad 406 on the surface of the middle cylinder 404 and fitting each other with the roller 414 can not only improve the stability and reliability of the equipment, reduce noise, and protect the equipment from wear and damage, but also improve the sealing and adaptability of the equipment. The surface of the outer roller 407 is wrapped with a belt 408, and the belt 408 is integrally assembled There are five groups, and each group is evenly assembled on the surface of the arc sleeve 401. The belt 408 is made of soft rubber material as a whole, and adopts a vinyl ethylene copolymer model. By adopting the vinyl ethylene copolymer material, the belt 408 has excellent elasticity, which enables the belt 408 to quickly return to its original state when subjected to external force, reducing deformation and aging caused by long-term use. The side of the belt 408 away from the outer drum 407 penetrates the inner wall of the arc sleeve 401, and a groove 409 is opened inside the outer drum 407. A positioning block 410 is fixedly connected to the bottom of the inner side of the groove 409. The top of the positioning block 410 is rotatably connected to a threaded rod 412. The end of the threaded rod 412 away from the positioning block 410 penetrates and is rotatably connected to the surface of the outer drum 407. Since the threaded rod 412 and the outer roller 407 are connected by threads, the position of the threaded rod 412 relative to the outer roller 407 can be accurately adjusted by rotating the threaded rod 412. The positioning block 410 provides a stable support point for the threaded rod 412 to ensure that the threaded rod 412 will not shake or deviate from the predetermined trajectory during the adjustment process, thereby maintaining the stability and reliability of the entire device. A nut 411 is installed at one end of the positioning block 410, and a clamping block 413 is installed at the other end of the positioning block 410. A round rod 415 is installed between the clamping block 413 and the nut 411. The internal thread of the nut 411 is connected to the surface of the threaded rod 412. By providing the advantages of adjustability, fixing stability, adaptability and ease of operation, the device can be used in situations where objects need to be clamped or fixed.The block 413 and the nut 411 are connected by a round rod 415 to ensure that the block 413 can slide and fix on the threaded rod 412. The block 413 is rotatably connected to a roller 414. A slide groove 416 is provided inside the frame 100. An electric slide rod 417 is fixedly connected inside the slide groove 416. The surface of the arc sleeve 401 is slidably connected to the surface of the electric slide rod 417. The arc sleeve 401 is slidably connected to the electric slide rod 417, so that the arc sleeve 401 can remain stable during the process of clamping the fruit, and accurate clamping and releasing operations are achieved.

[0044] When in use, first, the manipulator is used to dock with the connection port 200 on the side of the frame 100, and the manipulator is used to drive the entire device to move toward the fruit. When the device reaches the vicinity of the fruit, the arc sleeve 401 is placed on both sides of the fruit. Then, driven by the electric slide bar 417, the two sets of arc sleeves 401 will move relative to each other and gradually approach the fruit. When the belt 408 in the arc sleeve 401 contacts the fruit, the belt 408 will be deformed due to being squeezed, and drive the outer roller 407 connected thereto to start rotating, as shown in FIG. Fig.10 In the embodiment, since the inner wall of the outer drum 407 is rotatably connected with the middle drum 404, the middle drum 404 will also rotate synchronously due to the rotation of the outer drum 407. The middle drum 404 is connected to the rotating shaft 402 via a torsion spring rod 405. The elastic effect of the torsion spring rod 405 allows the middle drum 404 to idle relative to the rotating shaft 402 to a certain extent. As the belt 408 is gradually tightened, it is explained that when the belt 408 touches the fruits, they will be squeezed and drive the outer drum 407 to rotate. Since the outer drum 407 and the middle drum 404 are connected together, the middle drum 404 will also rotate. Due to the elasticity of the belt 408, they will rotate according to the fruits. The shape is used to adjust the length. At the same time, the surface of the rotating shaft 402 is equipped with five groups. A belt 408 is installed on the rotating shaft 402. Initially, the belt 408 is tight and connects the middle cylinder 404 and the outer roller 407. When starting to work, the torsion spring rod 405 inside the middle cylinder 404 starts to rotate and accumulates torque. During this process, the belt 408 is gradually released. When the torque of the torsion spring rod 405 reaches a certain level, the middle cylinder 404 and the torsion spring rod 405 will stop rotating and maintain a stable torque state. At this time, the outer roller 407 can continue to be released as needed to meet the needs of covering the fruit. At the same time, the position or pressure can be adjusted as needed. Fig.11The torsion spring rod 405 is used to adjust the torque to ensure that the multiple belts 408 on the rotating shaft 402 are subjected to the same pulling force, thereby generating a consistent clamping force on the fruit. The torsion spring rod 405 can adjust the torque to ensure that the pulling force on the five belts on the rotating shaft 402 is consistent. When the torque of the middle belt reaches the set value, the torsion spring rod 405 will automatically adjust so that all belts 408 have the same clamping force on the fruit, ensuring that the fruit is clamped evenly and stably, and ensuring that the fruit is completely wrapped. The friction between the outer drum 407 and the middle drum 404 It may gradually increase, at this time, the roller 414 inside the outer drum 407 will rub against the rubber pad 406 on the outer surface of the middle drum 404, and this friction is part of normal operation, and the surface of the rubber pad 406 is fixed on the middle drum 404, ensuring the stability of friction and the durability of the equipment. When the fruit is completely wrapped, the knife on the knife holder 300 can be used to cut the fruit. During the cutting process, due to the wrapping effect of the belt 408, the fruit will be firmly fixed between the arc sleeves 401, thereby ensuring the accuracy and safety of the cutting.

[0045] Also, to help the torsion spring rod reset, refer to Figure 1-Figure 13 As shown in the figure, a tightening device 500 is provided on the side of the frame 100, and the tightening device 500 includes a tooth block 503. The surface of the tooth block 503 is fixedly connected to the bottom of the frame 100. The surface of the tooth block 503 is equipped with a one-way gear 504. The one-way gear 504 and the tooth block 503 are meshed with each other. The top of the one-way gear 504 is provided with a connecting rod 505. The top of the connecting rod 505 passes through and is fixedly connected to the bottom surface of the rotating shaft 402. Through the meshing of the one-way gear 504 and the tooth block 503 and the connection of the one-way gear 504 with the rotating shaft 402, the function of one-way transmission is realized. The one-way transmission function can prevent reverse rotation or avoid accidental rotation due to inertia, load and other factors.

[0046] During use, after the fruit is successfully cut by being clamped by the arc sleeve 401 and wrapped by the belt 408, the arc sleeve 401 needs to be recovered for the next operation. This process is mainly completed by the electric slide bar 417 and the tightening device 500. It is explained here that after receiving the instruction, the electric slide bar 417 will push the two groups of arc sleeves 401 to move towards each other, that is, move away from the center of the frame 100. During this process, the outer drum 407, the middle drum 404 and the rotating shaft 402 will rotate counterclockwise with the movement of the arc sleeve 401, and the originally bent part will be restored to the original position. Since the torsion spring rod 405 is installed inside the middle drum 404, the torsion spring rod 405 will be compressed or bent when the belt 408 is stretched, storing a certain potential energy. When the belt 408 is no longer subjected to external force, the torsion spring rod 405 will release the stored potential energy. , helping the middle cylinder 404 and the outer cylinder 407 to return to their initial positions. However, it should be noted that since the restoring force of the torsion spring rod 405 is limited, it may be difficult to completely restore the arc sleeve 401 to its original position. In order to ensure that the arc sleeve 401 can completely and smoothly return to its original position, the tooth block 503 is fixed to the bottom of the frame 100, and the one-way gear 504 is engaged with the tooth block 503. When the rotating shaft 402 rotates back under the drive of the electric slide bar 417, the connecting rod 505 connected to the bottom of the rotating shaft 402 will also rotate accordingly, and the one-way gear 504 at the top of the connecting rod 505 is engaged with the tooth block 503. It is explained here that due to the characteristics of the one-way gear 504, it can only rotate in one direction and be locked in the other direction. It will provide additional assistance when the rotating shaft 402 rotates, helping the rotating shaft 402 to reset more smoothly.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pitaya adaptive intelligent picker, comprising a frame, a side of the frame is equipped with a connection port, and a top of the frame is equipped with a knife holder; Features: The surface of the frame is provided with a clamping device, and the clamping device includes an arc-shaped sleeve, a rotating shaft is installed on the side of the arc-shaped sleeve, the surface of the rotating shaft is rotatably connected to the middle cylinder, the interior of the middle cylinder is equipped with a torsion spring rod, the top of the torsion spring rod is fixedly connected to the surface of the rotating shaft, the bottom surface of the torsion spring rod is fixedly connected to the inner bottom of the middle cylinder, the surface of the middle cylinder is frictionally connected to the outer roller, the surface of the outer roller is wrapped with a belt, the side of the belt away from the outer roller passes through the inner wall of the arc-shaped sleeve, the interior of the outer roller is provided with a groove, the inner bottom of the groove is fixedly connected to a positioning block, one end of the positioning block is provided with a nut, the other end of the positioning block is provided with a clamping block, the interior of the clamping block is rotatably connected to a roller, and the interior of the frame is provided with a slide groove; The upper and lower ends of the rotating shaft are rotatably connected to the limit blocks, and the surface of the limit blocks is fixedly connected to the surface of the arc sleeve; the belt is assembled into five groups, and each group is evenly assembled on the surface of the arc sleeve, and the belt is made of soft rubber material; The top of the positioning block is rotatably connected to a threaded rod, and one end of the threaded rod away from the positioning block penetrates and is rotatably connected to the surface of the outer drum; A round rod is assembled between the clamping block and the nut, and the internal thread of the nut is connected to the surface of the threaded rod; A rubber pad is fixedly connected to the surface of the middle cylinder, and the rubber pad and the roller are in contact with each other; An electric slide rod is fixedly connected inside the slide groove, and the surface of the arc sleeve is slidably connected to the surface of the electric slide rod.

2. The self-adaptive intelligent pitaya picker according to claim 1, characterized in that: A tightening device is arranged on the side of the frame, and the tightening device comprises a tooth block, the surface of the tooth block is fixedly connected to the bottom of the frame, and the surface of the tooth block is equipped with a one-way gear.

3. The self-adaptive intelligent pitaya picker according to claim 2, characterized in that: The one-way gear and the tooth block are meshed with each other. A connecting rod is arranged on the top of the one-way gear. The top of the connecting rod penetrates and is fixedly connected to the bottom surface of the rotating shaft.

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