A device for detecting stones in agricultural machinery fields

Abstract

The present invention relates to a field stone detection device for agricultural machinery, which belongs to the technical field of agricultural machinery. It includes a flange shaft, a drive shaft, a saw blade, a detection mechanism and a reset mechanism. The detection mechanism includes a guide column, a locking spring, a flange sleeve and a baffle plate which are sleeved on the guide column. The baffle plate is fixed on the flange shaft, one end of the locking spring is fixed to the end face of the gear shaft, and the other end is fixed to the sliding hole area of ​​the flange sleeve. The reset mechanism includes a baffle plate and a crank. The crank is connected to the flange sleeve, and a baffle slot is provided on the agricultural machinery housing. When an impact load acts, the flange sleeve undergoes axial displacement, and the pipeline pulls the crank to rotate, and slides on the baffle plate from the other end of the crank, causing the baffle plate to move up and down in the baffle slot, thereby achieving disengagement or compression with the push rod. When disengaging, the push rod extends and acts on the clutch switch to interrupt power and put the equipment in an idling state. Otherwise, the equipment continues to work, thereby ensuring equipment safety and use efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural machinery, and in particular to a device for detecting stones in agricultural machinery fields. Background Art

[0002] Small agricultural machinery is widely used in field operations in hilly areas. The increasing use of these machines has increasingly highlighted operator safety concerns. A particularly prominent safety issue in field operations is the risk of hidden rocks being dislodged by agricultural machinery, which can fly everywhere due to impact and inertia. Effective and reliable protective devices on agricultural machinery, enabling timely braking and proactively preventing dangerous accidents, are crucial for ensuring a safe working environment for operators. Continuous technological advancements can improve both operator safety and machine reliability.

[0003] At present, a large number of agricultural machinery do not adopt effective safety protection devices or set baffles on the upper part of the working part. The lack of protective mechanisms makes it unsafe for personnel to work and the working environment is harsh. Setting baffles can block some stone and soil splashing, but the impact on the machinery will increase, which will inevitably increase vibration and noise, affecting the working environment.

[0004] More importantly, the above measures all have the risk of causing serious consequences such as equipment overload, damage to circuits and drive systems, and damage to the rotary tiller blades if the equipment continues to work when encountering hard foreign objects such as stones and iron blocks. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a field stone detection device for agricultural machinery, which can stop working when the equipment encounters hard foreign objects such as stones and iron blocks, and can resume work in time to solve the safety hazards and work efficiency problems of the existing technology.

[0006] The present invention is achieved through the following technical solutions:

[0007] The cam is fixed to the frame of the farm machinery and has a plurality of guide posts arranged at the ends of the flange shaft and uniformly distributed along the circumference of the flange shaft, a locking spring mounted on the guide post, a flange sleeve mounted on the flange shaft, and a baffle, the baffle being fixed to the flange shaft and having an arc surface on its contact end face with the flange sleeve, an arc mating surface being engaged with the arc surface being arranged on the flange sleeve, a sliding hole being arranged at the other end of the flange sleeve, the other end of the guide post being inserted into the sliding hole to form an axial guide, and one end of the locking spring being engaged with the gear The end face of the shaft is fixed, and the other end is fixed to the sliding hole area of ​​the flange sleeve. The reset mechanism includes a baffle slidably connected to the agricultural machinery housing and a crank slidably connected to the baffle. The crank is connected to the flange sleeve through a pipeline. A baffle slide groove is provided on the agricultural machinery housing. One side of the baffle slide in the vertical direction is provided with a push rod and a push rod spring, and a clutch switch is provided on the other side. The crank is hinged to the agricultural machinery housing, and the pipeline is slidably connected to the circumference of the flange sleeve. When the impact load is applied, the flange sleeve moves axially, and the pipeline pulls the crank to rotate, sliding on the baffle from the other end of the crank, causing the baffle to move up and down, thereby achieving disengagement or compression from the push rod. When disengaged, the push rod extends and acts on the clutch switch, interrupting power and making the equipment idle.

[0008] Furthermore, a circular groove is provided on the flange sleeve, a sliding ball is provided in the circular groove, the sliding ball is fixedly connected to the pipeline, a slider is fixedly provided on the outside of the sliding ball, and a connecting seat connected to the pipeline is provided on the slider.

[0009] Furthermore, a connecting buckle is provided at the connection between the pipeline and the crank, and a connecting shaft is provided on the connecting buckle for passing through the crank hole to achieve a rotational connection.

[0010] Furthermore, the reset mechanism also includes a support seat, a rotating shaft is provided on the support seat, and a rotating shaft hole is provided in the middle of the crank.

[0011] Furthermore, a transmission gear for transmitting power through a transmission toothed belt is provided on the gear shaft.

[0012] Furthermore, a horizontal sliding hole is provided on the baffle, and a sliding hole connecting rod is provided on the crank.

[0013] The beneficial effects of the present invention are:

[0014] The present invention utilizes a detection mechanism with a certain degree of flexibility in load transmission to generate an axial displacement in response to a large impact. A reset mechanism then converts this axial displacement into an up-and-down displacement, triggering the clutch switch for real-time response and reset of the entire device. This process detects rocks in real time and protects the device from overload and damage during large impacts. Furthermore, the reset function allows the device to operate continuously without the need for downtime or repairs due to high loads, thus improving operational efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the first direction of the present invention;

[0016] Figure 2 A schematic diagram of the second direction of the present invention;

[0017] Figure 3 Schematic diagram of the detection mechanism of the present invention;

[0018] Figure 4 is a schematic diagram of the reset mechanism of the present invention;

[0019] Figure 5 for Figure 4 Schematic diagram of another direction;

[0020] Figure 6 It is a partial schematic diagram of the baffle;

[0021] Figure 7 This is the state diagram of the baffle leaving the push rod and pressing the clutch switch;

[0022] Figure 8 This is the state diagram of the baffle pressing the push rod clutch switch being released;

[0023] Figure 9 This is the force diagram of the baffle in the downward state.

[0024] Description of reference numerals:

[0025] 1-Agricultural machinery; 2-Flange shaft (supplemented in Figure 2 ); 3-drive shaft; 4-saw blade; 5-detection mechanism; 6-reset mechanism; 7-guide column; 8-locking spring (supplemented in Figure 6 ); 9-flange sleeve; 10-baffle; 11-arc surface; 12-arc mating surface; 13-baffle; 14-crank; 15-pipeline; 16-baffle slide; 17-thrust rod; 18-thrust rod spring; 19-clutch switch; 20-support seat; 21-circular slide; 22-sliding ball; 23-connecting buckle; 25-transmission toothed belt; 26-transmission gear. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0029] In the above description of the present invention, it should be noted that the terms "one side," "the other side," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and simplify the description, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0030] Furthermore, the term "identical" and similar terms do not necessarily require that the components be absolutely identical; slight variations are permitted. The term "perpendicular" simply refers to the positional relationship between components being more perpendicular than "parallel," not that the structure must be perfectly vertical; rather, it can be slightly tilted.

[0031] like Figures 1 to 9 As shown, this embodiment is a device for detecting stones in the field of agricultural machinery. The device does not exist independently, but is fixed together with a micro-tiller or other agricultural machinery to work together to provide services for agricultural operations. Therefore, the device includes at least an agricultural machine 1, a flange shaft 2 rotatably fixed to the housing of the agricultural machine, a drive shaft 3 rotatably set on the flange shaft, and a saw blade 4 fixed at both ends of the flange shaft. The flange shaft is fixed to the housing through a bearing to fix the entire device. The drive shaft is mounted on the flange shaft with a certain gap between the two, or a bearing is set to achieve rotational freedom, and the saw blade is fixed at both ends of the flange shaft to achieve land cutting.

[0032] In particular, this embodiment also includes a detection mechanism 5 and a reset mechanism 6. The detection mechanism is provided with one at each end of the flange shaft, and performs stone detection for the saw blade on each side. The detection mechanism includes a plurality of guide columns 7 provided at the end of the flange shaft and evenly distributed along the circumference of the flange shaft, a locking spring 8 mounted on the guide column, a flange sleeve 9 mounted on the flange shaft, and a baffle 10. The baffle is fixed on the flange shaft, and the contact end face with the flange sleeve is provided with an arc surface 11. The flange sleeve is provided with an arc mating surface 12 that engages with the arc surface. A sliding hole is provided at the other end of the flange sleeve, and the other end of the guide column is inserted into the sliding hole to form an axial guide. One end of the locking spring is fixed to the end face of the gear shaft, and the other end is fixed to the sliding hole area of ​​the flange sleeve. When the saw blade is hit by a stone, a temporary rotational deceleration will occur, and the rotational deceleration will be transmitted to the baffle through the cooperation of the arc surface and the arc mating surface, causing it to decelerate, thereby realizing the detection of the stone. During this process, a certain speed difference is formed through the flexible transmission of the locking spring, and this signal is transmitted to the reset mechanism to achieve the idling speed of the equipment, thereby avoiding damage to the equipment due to overload.

[0033] The stones in this embodiment are not limited to stones, but also include hard lumps of earth, iron blocks or other hard substances that form a mass.

[0034] The reset mechanism of this embodiment includes a baffle 13 slidably connected to the agricultural machinery housing, a crank 14 slidably connected to the baffle, the crank is connected to the flange sleeve through a pipeline 15, a baffle slide 16 is provided on the agricultural machinery housing, a push rod 17 and a push rod spring 18 are provided on one side of the vertical direction of the baffle slide, and a clutch switch 19 is provided on the other side, the agricultural machinery housing is provided with a support seat 20, a rotating shaft is provided on the support seat, and a rotating shaft hole is provided in the middle of the crank so that the crank can rotate around the rotating shaft, a circular slide 21 is provided on the flange sleeve, a sliding ball 22 is provided in the circular slide, and the sliding ball is fixedly connected to the pipeline. A slider 23 is fixedly provided on the outside of the device. A connecting seat connected to the pipeline is provided on the slider. The connecting seat is connected to the pipeline, and the slider is fixed to the sliding ball. When the flange sleeve rotates, the sliding ball and the slider slide in the slide groove to achieve sliding connection with the circumference of the flange sleeve. When the impact load is applied, the flange sleeve and the drive shaft have a phase difference in the circumference due to the constraint of the arc surface. The locking spring is compressed and generates an axial force to cause the flange sleeve to move axially. At this time, the pipeline is pulled or compressed, and the crank is rotated. The other end of the crank slides on the baffle, prompting the baffle to move up and down along the slide groove, thereby achieving separation from or compression of the push rod:

[0035] like Figure 7 As shown, it shows the disengaged state, at this time the spring force of the push rod is restored, the push rod extends and acts on the clutch switch, interrupting the power and putting the equipment in the idle state;

[0036] like Figure 8As shown, it shows the compressed state. At this time, the push rod is compressed, driving the spring to be compressed, so that it retracts, the clutch switch is released, the power is restored, and the equipment continues to work.

[0037] As a further improvement of this embodiment, a preferred solution of this embodiment is as follows: Figure 9 As shown, the lower end of the baffle is set to be V-shaped, and the end face adopts a smooth transition so that the contact of the push rod is a conical surface contact. Therefore, when the baffle continues to descend, the conical surface contact force is N, and has a certain contact component force Nx consistent with the axis of the push rod, forming a driving force to press the push rod back, driving the push rod to overcome the spring force and move axially.

[0038] Of course, as an inevitable choice, the end of the push rod is set to an arc surface so that it has a certain arc surface area to facilitate contact with the baffle and generate axial displacement.

[0039] In addition, the contact position between the push rod and the clutch should also be set to a specific position, at least the leftmost end of the push rod arc surface area should be located to the left of the center of the baffle, such as Figure 7 As shown, there is a driving force component.

[0040] The above is the added content

[0041] In this embodiment, a connecting buckle 24 is provided at the connection between the pipe and the crank. This buckle is equipped with a connecting shaft that passes through the crank hole for rotational connection. This buckle ensures a proper connection between the pipe and the crank, and transmits displacement response through changes in the length of the cable, creating conditions for achieving high-load idling of the equipment.

[0042] In this embodiment, a transmission toothed belt 25 is also included, and a transmission gear 26 is fixedly arranged on the gear shaft. The transmission toothed belt is connected to the transmission gear for power transmission. The transmission gear of this embodiment is arranged in the middle of the gear shaft, and a set of detection mechanisms are arranged on both sides.

[0043] In this embodiment, a horizontal sliding hole is provided on the baffle, and a sliding hole connecting rod is provided on the crank. To offset the height change, the connecting rod moves along the horizontal sliding hole, and the stopper moves up and down along the baffle slot, thereby realizing the opening drive of the switch.

[0044] In order to ensure the stability of transmission, a steel wire is added to the pipeline in this embodiment to make it have a certain rigidity so that the traction force and displacement can be accurately transmitted.

[0045] This embodiment uses a simple structure to detect and respond to large impacts on complex equipment, effectively avoiding overload damage and effectively ensuring the safety of equipment and personnel.

[0046] At the same time, this embodiment can provide different cutting forces by adjusting the physical parameters of components such as the locking spring, flange shaft, flange sleeve, and pipeline, thereby adapting to any soil conditions.

[0047] In this embodiment, after idling is achieved, when the impact load is removed, the baffle is moved downward to press the push rod, the switch is started, the machine continues to work, and reset is achieved, so that the equipment is connected to work without affecting production.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

7. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has a round shank to contact with said linking rod. said linking rod is pivotally connected to said linking rod. said linking rod is pivotally connected to said linking rod. The end face of the shaft is fixed, and the other end is fixed to the sliding hole area of ​​the flange sleeve. The reset mechanism includes a baffle slidably connected to the agricultural machinery housing, and a crank slidably connected to the baffle. The crank is connected to the flange sleeve through a pipeline. A baffle slide groove is provided on the agricultural machinery housing, and a push rod and a push rod spring are provided on one side of the vertical direction of the baffle slide, and a clutch switch is provided on the other side. The crank is hinged to the agricultural machinery housing, and the pipeline is slidably connected to the circumference of the flange sleeve. When the impact load is applied, the flange sleeve moves axially, and the pipeline pulls the crank to rotate, sliding on the baffle from the other end of the crank, causing the baffle to move up and down, thereby achieving disengagement or compression from the push rod. When disengaged, the push rod spring extends and acts on the clutch switch, interrupting the power and making the equipment idle.

2. The device for detecting stones in agricultural fields according to claim 1, characterized in that: The flange sleeve is provided with a circular slide groove, a slide ball is provided in the circular slide groove, the slide ball is fixedly connected to the pipeline, a slider is fixedly provided on the outside of the slide ball, and a connecting seat connected to the pipeline is provided on the slider.

3. The device for detecting stones in agricultural fields according to claim 1, characterized in that: A connecting buckle is provided at the connection between the pipeline and the crank, and a connecting shaft for passing through the crank hole to achieve rotational connection is provided on the connecting buckle.

4. The device for detecting stones in agricultural fields according to claim 1, characterized in that: The reset mechanism further comprises a support seat, a rotating shaft is provided on the support seat, and a rotating shaft hole is provided in the middle of the crank.

5. The device for detecting stones in agricultural fields according to claim 1, characterized in that: The gear shaft is provided with a transmission gear for transmitting power through a transmission toothed belt.

6. The device for detecting stones in agricultural fields according to claim 1, characterized in that: The baffle is provided with a horizontal sliding hole, and the crank is provided with a sliding hole connecting rod.

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