Safety starting mechanism for a starter and an agricultural machine

Abstract

The present application relates to the field of agricultural machinery, especially to a safety starting mechanism of a starter and agricultural machinery, comprising a gear position adjusting mechanism and a starting assembly, the starting assembly comprising a starting part and a pawl, characterized in that the starting part further comprises a starting limiting part, the safety starting mechanism further comprises a locking lever and a dial block assembly, the locking lever is rotatably arranged on the machine body through the cooperation of the rotating shaft hole in the middle part and the pin shaft, and the two ends of the locking lever are respectively matched with the dial block assembly and the starting limiting part. The movement of the dial block assembly is controlled by the gear position adjusting mechanism to further adjust the posture of the locking lever, and the starting limiting part is constrained through the cooperation of the locking lever and the starting limiting part, so as to achieve the technical effect of safe starting.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery, and in particular to a safety starting mechanism for a starter and agricultural machinery. Background Technology

[0002] As a major agricultural country, my country has seen the widespread use of agricultural machinery with its economic development. Existing agricultural machinery, especially small tillage machines, generally uses a combination of handles and linkages to control gear shifting.

[0003] For example, Chinese patent CN217519183U describes how to shift gears in agricultural machinery using a shift lever in conjunction with a multi-link structure.

[0004] Most existing agricultural machinery requires an auxiliary starter to start. These auxiliary starters are categorized into crank-operated and pull-plate starters based on their starting method. Crank-operated starters typically involve hand-cranking or foot-operating to activate a coiled spring within the starter. Once activated, operating the starting mechanism disengages the ratchet from the pawl, releasing the spring's elastic potential energy and starting the engine.

[0005] For example, Chinese patent CN201711325066.8 discloses a new type of air-cooled diesel engine starter starting mechanism. The operator turns the starter shaft by cranking the handle, which causes the coil spring to contract and achieve elastic energy storage. The starter plate is released, i.e., the pawl disengages from the ratchet. The elastic potential energy of the coil spring is released, which drives the main shaft to reverse and start the engine through the cooperation of the starter cup.

[0006] For example, Chinese patent CN120906719A discloses an auxiliary starter that is started by foot. It also achieves elastic energy storage by contracting the coil spring, releasing the starter plate (i.e., the pawl disengages from the ratchet), releasing the elastic potential energy of the coil spring, and driving the main shaft to reverse and start the engine through the cooperation of the starter cup.

[0007] When operating agricultural machinery, operators may start the machine without confirming its gear position. If the machine is not in neutral, it will move under the engine's drive. Since the machinery may have blades, this movement could cause injury to the operator or bystanders. This is especially true for the elderly, whose awareness may be lower than that of younger people, making them more prone to starting the machine without confirming the gear position. Therefore, ensuring safety during the starting process of agricultural machinery is of paramount importance. Summary of the Invention

[0008] To address the aforementioned problems, the purpose of this invention is to provide a safe starting mechanism for starters and agricultural machinery, thereby overcoming the deficiencies in the safety performance of the starting process in the prior art.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a safety starting mechanism for a starter, including a gear adjustment mechanism and a starting component, wherein the starting component includes a starting part and a pawl, characterized in that: the starting component further includes a starting limiting part, the safety starting mechanism further includes a locking lever and a toggle block assembly, the locking lever is rotatably mounted on the body through a central pivot hole and a pin, and the two ends of the locking lever respectively cooperate with the toggle block assembly and the starting limiting part.

[0010] Furthermore, the two ends of the locking lever are a first end and a second end, respectively; When the gear adjustment mechanism is adjusted to neutral, the gear adjustment mechanism drives the shift block assembly to engage with the first end of the locking lever, so that the second end of the locking lever is disengaged from the starting restriction part; When the gear adjustment mechanism is adjusted to a non-neutral position, the gear adjustment mechanism drives the shift block assembly to move, so that the second end of the locking lever engages with the starting restriction part, and the pawl abuts against the ratchet.

[0011] Furthermore, the second end has a driving force, enabling the second end to actively cooperate with the starting restriction part.

[0012] Furthermore, the locking lever includes an elastic element or the mass of the second end of the locking lever is greater than the mass of the first end.

[0013] Furthermore, the second end of the locking lever is provided with a hook portion, and the starting restriction portion is provided with a restriction rod, the hook portion cooperating with the restriction rod.

[0014] Furthermore, the toggle assembly includes a limiting roller, which is connected to the adjustment mechanism via a pin.

[0015] Furthermore, the two ends of the locking lever are a first end and a second end, respectively; When the gear adjustment mechanism is in neutral, the gear adjustment mechanism drives the first end of the locking lever of the shift block assembly, causing the second end to move downward and disengage from the starting restriction part. When the gear adjustment mechanism is not in neutral, the gear adjustment mechanism drives the first end of the locking lever of the shift block assembly, causing the second end to move upward and the second end to be restricted by the start-up limiting part.

[0016] Furthermore, the shift block assembly includes a C-shaped or frame-shaped drive member, which is connected to the gear adjustment mechanism, and the first end of the locking lever is located inside the C-shaped or frame-shaped drive member.

[0017] Furthermore, a connector is provided at the second end of the locking lever, and the other end of the connector is connected to the start-up limiting part.

[0018] Also provided is an agricultural machine, including a safety starting mechanism of the starter described in any of the preceding claims.

[0019] In summary, the advantages of the technical solution of this invention compared to traditional technical means are as follows: By setting a lever assembly on the existing gear adjustment mechanism, the lever assembly, in conjunction with the locking lever, adjusts the posture of the locking lever. Furthermore, through the cooperation of the locking lever and the starting restriction part, the different cooperative postures of the locking lever and the starting restriction part under different gear states achieve the restriction and disrestriction of the starting part. That is, in the neutral state, the operator can operate the starting part to start the agricultural machinery, and the agricultural machinery will not move after starting in the neutral state; in the non-neutral state, due to the restriction of the cooperation between the locking lever and the starting restriction part, the operator cannot operate the starting part and cannot start the agricultural machinery, thus ensuring the safety of the agricultural machinery starting process. Attached Figure Description

[0020] The foregoing and other objects, features and advantages of the present invention will become apparent from the following detailed description taken in conjunction with the accompanying drawings.

[0021] Figure 1 This is the overall intent of the safety starting mechanism and agricultural machinery of the present invention; Figure 2 This is a schematic diagram of the gear adjustment mechanism of the present invention; Figure 3 This is a first schematic diagram of the safety starting mechanism of the present invention; Figure 4 This is a second schematic diagram of the safety starting mechanism of the present invention; Figure 5 This is a schematic diagram of the cooperation between the shift block assembly and the gear adjustment mechanism in an embodiment of the present invention; Figure 6 This is a first schematic diagram showing the cooperation between the starting component and the locking lever in an embodiment of the present invention; Figure 7 This is a second schematic diagram showing the cooperation between the starting component and the locking lever in an embodiment of the present invention; The attached figures are labeled as follows: Gear adjustment mechanism 1, gear shift handle 11, first link 12, second link 13, third link 14, fourth link 15, first hinge point 16, second hinge point 17, third hinge point 18, limit member 19; Starting assembly 2, starting part 21, pawl 22, starting limiting part 23, limiting rod 231, positioning post 24; Locking lever 3, first end 31, second end 32, hook portion 321; Toggle assembly 4, limiting roller 41, C-type or frame-type drive component 42, connecting rod 43; 5. Gearbox; 6. Ratchet; 7. Connector. Detailed Implementation

[0022] The following embodiments of the present invention serve as inspiration. Through the following description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The scope of protection of this invention is not limited to the contents of the claims and specification.

[0023] The invention will be further described with reference to the following figures: like Figures 1 to 7 As shown, a safety starting mechanism for a starter includes a gear adjustment mechanism 1 and a starting component 2. The starting component 2 includes a starting part 21 and a pawl 22. The starting component 2 also includes a starting limiting part 23. The safety starting mechanism also includes a locking lever 3 and a toggle assembly 4. The locking lever 3 is rotatably mounted on the body through a central pivot hole and a pin. The two ends of the locking lever 3 are respectively engaged with the toggle assembly 4 and the starting limiting part 23.

[0024] like Figure 2 As shown, the gear shifting mechanism 1 includes a gear shift lever 11, a first link 12, a second link 13, a third link 14, and a fourth link 15, which are connected in sequence. The fourth link 15 is connected to the gearbox 5. By operating the gear shift lever 11, the gearbox 5 can be shifted in conjunction with the multi-link mechanism. Since the gear shifting of agricultural machinery is achieved through the gear shift lever 11, the shifting structure and shifting principle are existing technologies, and therefore will not be described in detail in this application.

[0025] like Figure 3 and Figure 4 As shown, the starting assembly 2 includes a starting part 21 and a pawl 22. The pawl 22 engages with the ratchet 6 to prevent the ratchet 6 and the starting shaft from reversing during the auxiliary starter's power-accumulating process, thus preventing them from affecting normal power accumulation. The starting part 21, after power accumulation is complete, releases the restriction between the pawl 22 and the ratchet 6, releasing the elastic potential energy of the coil spring to start the engine. Since the auxiliary starter's starting process is prior art, it will not be described in detail here.

[0026] The start-restricting part 23 can be fixed coaxially with the start-up part 21 and the pawl 22, or it can be fixed non-coaxially. Its purpose is only to realize the linkage between the start-up part 21, the start-restricting part 23 and the pawl 22. As in the embodiment provided in this application, the start-up part 21, the pawl 22 and the start-restricting part 23 are coaxially fixed to the auxiliary starter housing by the positioning post 24.

[0027] A pivot hole is provided in the middle of the locking lever 3, which mates with a pin, allowing both ends of the locking lever 3 to rotate around the pin. It should be noted that the "middle" mentioned here is not an absolute center position; the pivot hole can be offset to either end. The locking lever 3 is mounted to the machine body via the pin. The "machine body" here can be the housing of the auxiliary starter or other parts of the agricultural machinery; its purpose is simply to facilitate the installation of the locking lever 3.

[0028] The two ends of the locking lever 3 are the first end 31 and the second end 32, respectively.

[0029] When the gear adjustment mechanism 1 is adjusted to neutral, the gear adjustment mechanism 1 drives the shift block assembly 4 to cooperate with the first end 31 of the locking lever 3, so that the second end 32 of the locking lever 3 is disengaged from the start restriction part 23. When the gear adjustment mechanism 1 is adjusted to non-neutral, the gear adjustment mechanism 1 drives the shift block assembly 4 to move, so that the second end 32 of the locking lever 3 cooperates with the start restriction part 23, and the pawl 22 abuts against the ratchet 6.

[0030] Specifically, in neutral, the gear adjustment mechanism 1 drives the shift block assembly 4 to engage with the first end 31 of the locking lever 3. This engages the second end 32, which in turn reduces or eliminates the constraint on the starting restriction part 23, allowing the operator to operate the starting part 21 to start the agricultural machinery. In non-neutral, the gear adjustment mechanism 1 drives the shift block assembly 4, which engages with the first end 31. This engages the second end 32, which in turn provides constraint on the starting restriction part 23, preventing the operator from operating the starting part 21. Therefore, when the operator needs to start the agricultural machinery, the gear adjustment mechanism 1 must be in neutral. After starting the machinery, it will not move, posing no safety hazard to the operator or other personnel. When the machinery needs to move, simply shifting gears via the gear shift lever 11 will allow the machinery to move. At this time, the operator is clearly aware of the machinery's movement and will proactively avoid any risks associated with its movement. This aims to improve the safety of starting agricultural machinery.

[0031] Further explanation: The shift block assembly 4 includes a limiting roller 41, which is connected to the gear adjustment mechanism 1 via a pin. Specifically, the limiting roller 41 has a central pivot hole, which engages with the pin to connect to the gear adjustment mechanism 1. The roller engages with the first end 31 of the locking lever 3. The second end 32 of the locking lever 3 has a hook portion 321, and the start-limiting part 23 has a limiting rod 231. When not in neutral, the limiting roller 41 separates from the first end 31, causing the hook portion 321 of the second end 32 to engage with the limiting rod 231 of the start-limiting part 23. The hook portion 321 provides a restraining force on the limiting rod 231, at which point the pawl 22 abuts against the ratchet 6. Under the restraining force of the hook portion 321 on the limiting rod 231, the operator cannot operate the start-up part 21 and cannot start the agricultural machinery. When in neutral, the limiting roller 41, under the action of the gear adjustment mechanism 1, contacts the first end 31 of the locking lever 3 and provides driving force, causing the first end 31 to descend. At the same time, the second end 32 is raised in conjunction, and the hook part 321 of the second end 32 separates from the limiting rod 231, releasing the constraint force. At this time, the operator can operate the starting part 21 to separate the pawl 22 from the ratchet 6, release the coil spring potential energy, and start the agricultural machinery.

[0032] In this embodiment, when the limiting roller 41 separates from the first end 31, in order to better enable the second end 32 to cooperate with the starting limiting part 23, the second end 32 can be given a driving force, so that the second end 32 can actively cooperate with the starting limiting part 23. The driving force of the second end 32 can be achieved by setting a torsion spring at the pin of the locking lever 3 (not shown in the figure). The torsion spring always provides torsional force, so that the second end 32 actively cooperates with the starting limiting part 23. Of course, the second end 32 can also be given a driving force by setting an elastic element on the second end 32 (not shown in the figure). The other end of the elastic element is set on the housing, so that the second end 32 always has an elastic constraint force, so that the second end 32 actively cooperates with the starting limiting part 23; or the mass of the second end 32 can be higher than that of the first end 31, such as by changing the material of the two ends of the locking lever 3 or by different mass ratios at the two ends, so that the second end 32 has a greater weight relative to the first end 31, so that the second end 32 naturally descends and actively cooperates with the starting limiting part 23, providing a constraint force to the starting limiting part 23. When in neutral, the force of the limiting roller 41 engaging with the first end 31 overcomes the constraint force of the torsion spring, elastic element, or the weight of the second end 32 itself, thereby separating the second end 32 from the starting limiting part 23 to start the agricultural machinery.

[0033] In this embodiment, a limiting roller 41 is used to restrict the rolling engagement between the limiting roller 41 and the second end 32, allowing for flexible contact between the limiting roller 41 and the second end 32 to improve the product's lifespan. Of course, based on the movement trajectory of the first end 31, the movement of the locking lever 3's first end 31 can also be achieved using a lever or lever block. This should be understood as an equivalent technical solution to this embodiment.

[0034] like Figures 5 to 7 As shown, in another embodiment, when the gear adjustment mechanism 1 is in neutral, the gear adjustment mechanism 1 drives the shift block assembly 4 to drive the first end 31 of the locking lever 3, causing the second end 32 to move downward and disengage from the starting restriction part 23; when the gear adjustment mechanism 1 is not in neutral, the gear adjustment mechanism 1 drives the shift block assembly 4 to drive the first end 31 of the locking lever 3, causing the second end 32 to move upward and engage with the starting restriction part 23. That is, when the first end 31 is raised, the second end 32 is lowered to release the constraint between the second end 32 and the starting restriction part 23, allowing the agricultural machinery to be started; when the first end 31 is lowered, the second end 32 is raised to constrain the second end 32 with the starting restriction mechanism, causing the pawl 22 to abut against the ratchet 6, preventing the agricultural machinery from being started.

[0035] Specifically, the shift block assembly 4 includes a C-shaped or frame-shaped drive member 42, which is connected to the gear adjustment mechanism 1. The first end 31 of the locking lever 3 is located inside the C-shaped or frame-shaped drive member 42. The C-shaped or frame-shaped drive member 42 is hinged to the gear adjustment mechanism 1 via a connecting rod, so that the connecting rod 43 always remains in a vertical position. When in neutral, the gear adjustment mechanism 1 drives the C-shaped or frame-shaped drive member 42 to rise. The inner bottom side of the C-shaped or frame-shaped drive member 42 contacts the first end 31 of the locking lever 3 and drives the first end 31 to rise, causing the second end 32 of the locking lever 3 to fall, thereby releasing the constraint of the second end 32 on the starting restriction part 23. The operator can then operate the starting part 21 to start the agricultural machinery. When not in neutral, the gear adjustment mechanism 1 drives the C-shaped or frame-shaped drive member 42 to fall, causing the inner upper end of the C-shaped or frame-shaped drive member 42 to contact the first end 31 of the locking lever 3, causing the first end 31 to fall and the second end 32 to rise, thereby achieving the constraint of the second end 32 on the starting restriction part 23, causing the pawl 22 to abut against the ratchet 6, preventing the operator from starting the agricultural machinery.

[0036] pass Figure 5To further illustrate, a simplified view is provided. The first link 12 and the second link 13 are hinged at the first hinge point 16. The middle of the second link 13 is hinged at the second hinge point 17. The second link 13 and the third link 14 are hinged at the third hinge point 18. The C-shaped or frame-shaped drive member 42 is fixedly connected to the connecting rod 43, and the other end of the connecting rod 43 is hinged to the third hinge point 18. When the gear shift lever is operated, the third hinge point 18 will rise or fall around the second hinge point 17. The multiple circles shown inside the C-shaped or frame-shaped drive member 42 represent the movement trajectory of the first end 31 of the locking lever 3. When the gear shift lever 11 is in non-neutral, the inner side of the upper end of the C-shaped or frame-shaped drive member 42 abuts against the first end 31 of the locking lever 3, causing the first end 31 to fall to its limit position. When in neutral, the inner side of the lower end of the C-shaped or frame-shaped drive member 42 abuts against the first end 31 of the locking lever 3, causing the first end 31 of the locking lever 3 to rise. To further control the attitude of the C-type or frame-type drive unit 42 during the descent process, a limiting member 19 can be provided at the bottom of the C-type or frame-type drive unit 42.

[0037] like Figure 6 and Figure 7 As shown, in this embodiment, the second end 32 of the locking lever 3 and the starting restriction part 23 can be engaged by a connecting member 7. One end of the connecting member 7 is connected to the second end 32 of the locking lever 3, and the other end is connected to the starting restriction part 23. The connecting member 7 is specifically a cable. That is, when the second end 32 and the starting restriction part 23 need to provide a restraining force, the second end 32 is raised to make the cable taut. At this time, since the first end 31 of the locking lever 3 abuts against the inner side of the upper end of the C-shaped or frame-shaped drive member 42, and the starting restriction part 23 causes the pawl 22 to abut against the ratchet 6 under the action of the cable, the operator cannot start the agricultural machinery. When the second end 32 of the locking lever 3 and the starting restriction part 23 do not need to provide a restraining force, the second end 32 is lowered, the cable is slack, and the operator can operate the starting part 21 to start the agricultural machinery.

[0038] This application also provides an agricultural machine, which includes a safety starting mechanism of the starter of any of the foregoing embodiments.

[0039] In the description of this specification, It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product is in use. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In addition, the terms "horizontal," "vertical," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize this utility model.

Claims

1. A safety starting mechanism for a starter, comprising a gear adjustment mechanism (1) and a starting assembly (2), wherein the starting assembly (2) comprises a starting part (21) and a pawl (22), characterized in that: The starting component (2) also includes a starting restriction part (23), and the safety starting mechanism also includes a locking lever (3) and a toggle assembly (4). The locking lever (3) is rotatably mounted on the machine body through a pivot hole in the middle and a pin. The two ends of the locking lever (3) are respectively engaged with the toggle assembly (4) and the starting restriction part (23).

2. The safety starting mechanism of a starter as described in claim 1, characterized in that: The two ends of the locking lever (3) are the first end (31) and the second end (32), respectively. When the gear adjustment mechanism (1) is adjusted to neutral, the gear adjustment mechanism (1) drives the shift block assembly (4) to cooperate with the first end (31) of the locking lever (3), so that the second end (32) of the locking lever (3) is disengaged from the starting restriction part (23); When the gear adjustment mechanism (1) is adjusted to non-neutral, the gear adjustment mechanism (1) drives the shift block assembly (4) to move, so that the second end (32) of the locking lever (3) cooperates with the start restriction part (23), so that the pawl (22) abuts against the ratchet (6).

3. The safety starting mechanism of a starter as described in claim 2, characterized in that: The second end (32) has a driving force, which enables the second end (32) to actively cooperate with the start-up limiting part (23).

4. The safety starting mechanism of a starter as described in claim 3, characterized in that: The locking lever (3) includes an elastic element or the mass of the second end (32) of the locking lever (3) is greater than the mass of the first end (31).

5. The safety starting mechanism of a starter as described in claim 1, characterized in that: The second end (32) of the locking lever (3) is provided with a hook (321), and the starting restriction part (23) is provided with a restriction rod (231). The hook (321) cooperates with the restriction rod (231).

6. The safety starting mechanism of a starter as described in claim 1, characterized in that: The shift block assembly (4) includes a limiting roller (41), which is connected to the gear adjustment mechanism (1) via a pin.

7. The safety starting mechanism of a starter as described in claim 1, characterized in that: The two ends of the locking lever (3) are the first end (31) and the second end (32), respectively. When the gear adjustment mechanism (1) is in neutral, the gear adjustment mechanism (1) drives the shift block assembly (4) to drive the first end (31) of the locking lever (3), causing the second end (32) to move downward and the second end (32) to disengage from the start restriction part (23). When the gear adjustment mechanism (1) is not in neutral, the gear adjustment mechanism (1) drives the shift block assembly (4) to drive the first end (31) of the locking lever (3), so that the second end (32) moves upward and the second end (32) is restricted by the start restriction part (23).

8. The safety starting mechanism of a starter as described in claim 1, characterized in that: The shift block assembly (4) includes a C-shaped or frame-shaped drive member (42), which is connected to the gear adjustment mechanism (1), and the first end (31) of the locking lever (3) is located inside the C-shaped or frame-shaped drive member (42).

9. The safety starting mechanism of a starter as described in claim 1, characterized in that: The second end (32) of the locking lever (3) is provided with a connector (7), and the other end of the connector (7) is connected to the start-up limiting part (23).

10. An agricultural machine, characterized in that, The agricultural machinery includes the safety starting mechanism of any one of the starters described in claims 1 to 9.

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