Field stone detection device for agricultural machinery

Abstract

The invention relates to an agricultural machinery field stone detection device, and belongs to the technical field of agricultural machinery, the agricultural machinery field stone detection device comprises a flange shaft, a driving shaft, a saw blade, a detection mechanism and a reset mechanism, the detection mechanism comprises a guide column, a locking spring sleeved on the guide column, a flange sleeve and a baffle disc, the baffle disc is fixed on the flange shaft, and the flange sleeve is fixed on the flange shaft. One end of the locking spring is fixed to the end face of the gear shaft, the other end of the locking spring is fixed to a sliding hole area of the flange sleeve, the reset mechanism comprises a baffle and a crank, the crank is connected with the flange sleeve, and a baffle sliding groove is formed in the agricultural machine shell. The driven crank slides on the baffle at the other end to enable the baffle to move up and down in the baffle sliding groove, so that the driven crank is separated from or pressed against the ejector rod, and the ejector rod extends out and acts on the clutch switch to interrupt power during separation, so that equipment is in an idling state, otherwise, the equipment continues to work, and the safety and the use efficiency of the equipment are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, and in particular to a stone detection device for agricultural machinery in a field. Background Art

[0002] Small agricultural machinery is widely used in field operations in hilly areas. The use of a large number of agricultural machinery has increasingly highlighted the safety protection issues of operators. A more prominent safety issue in field operations is that hidden stones in the field are dug out during agricultural machinery operations, and they splash around due to impact and inertia, causing risks. Effective and reliable personnel protection devices on agricultural machinery enable them to brake in time and actively avoid the occurrence of dangerous accidents, which is an important aspect of ensuring a safe working environment for operators. Continuously updating its technology can improve the safety of operators and the reliability of machinery.

[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 they continue 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 stone detection device for agricultural machinery in the field, which can stop working when the equipment encounters hard foreign objects such as stones and iron blocks, and can resume working in time, so as to solve the safety hazards and work efficiency problems existing in the prior art.

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

[0007] A field stone detection device for agricultural machinery comprises a flange shaft rotatably fixed to an agricultural machinery housing, a driving shaft rotatably arranged on the flange shaft and a saw blade fixedly arranged at both ends of the flange shaft, characterized in that: it also comprises a detection mechanism and a reset mechanism, wherein one detection mechanism is arranged at each end of the flange shaft, the detection mechanism comprises a plurality of guide posts arranged at the end of the flange shaft and uniformly distributed along the circumference of the flange shaft, a locking spring sleeved on the guide post, a flange sleeve sleeved on the flange shaft and a baffle plate, the baffle plate is fixed on the flange shaft, and a curved surface is arranged on the contact end face with the flange sleeve, the flange sleeve is arranged on an curved mating surface engaged with the curved surface, a sliding hole is arranged at the other end of the flange sleeve, the other end of the guide post is inserted into the sliding hole to form an axial guide, one end of the locking spring is engaged with a 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. A push rod and a push rod spring are provided on one side of the baffle slide in the vertical direction, 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 an impact load is applied, the flange sleeve moves axially, and the pipeline pulls the crank to rotate, and slides on the baffle from the other end of the crank, prompting 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 to interrupt power and put the equipment in an idle state.

[0008] Furthermore, a circular slide groove is provided on the flange sleeve, a slide ball is provided in the circular slide groove, the slide ball is fixedly connected to the pipeline, a slider is fixedly provided outside the slide 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 realize rotational connection.

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

[0011] Furthermore, a transmission gear for transmitting power through a transmission toothed belt is arranged 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 can generate an axial displacement response to a large impact through a detection mechanism with a certain flexibility to transmit loads, and then convert the axial displacement into an up-and-down displacement through a reset mechanism, thereby triggering a clutch switch to respond to and reset the entire machine in real time. This process detects stones in real time and protects the equipment from overloading under a large impact, effectively protecting the equipment from damage. In addition, due to the presence of the reset function, the device can work continuously and will not stop for repairs when encountering such a large load, thereby improving operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 It is a schematic diagram of the second direction of the present invention;

[0017] Figure 3 It is a 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 a state diagram of the baffle leaving the push rod and pressing the clutch switch;

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

[0023] Fig. 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] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 here 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 claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are 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, further definition and explanation thereof is not required in subsequent drawings.

[0029] In the above description of the present invention, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0030] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0031] like Figures 1 to 9 As shown, a field stone detection device for agricultural machinery in this embodiment does not exist independently, but is fixed together with a micro-tillage machine or other agricultural machinery to work together to provide services for agricultural operations. Therefore, the device at least includes an agricultural machine 1, and also includes a flange shaft 2 rotatably fixed to the agricultural machinery housing, a drive shaft 3 rotatably set on the flange shaft and a saw blade 4 fixedly set 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 bearings are 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, the present embodiment further includes a detection mechanism 5 and a reset mechanism 6. The detection mechanism is respectively arranged 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 arranged at the end of the flange shaft and evenly distributed along the circumference of the flange shaft, a locking spring 8 sleeved on the guide column, a flange sleeve 9 sleeved 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 engaged 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 impacted 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, and the deceleration will be achieved, 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 only stones, but also include hard lumps of soil, iron blocks or other hard substances in a mass shape.

[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 groove 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 baffle slide in the vertical direction, and a clutch switch 19 is provided on the other side, a support seat 20 is provided on the agricultural machinery housing, a rotating shaft is provided on the support seat, 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 groove 21 is provided on the flange sleeve, a sliding ball 22 is provided in the circular slide groove, the sliding ball is fixedly connected to the pipeline, and the sliding ball The outside of the housing is fixed with a slider 23, and a connection seat connected to the pipeline is provided on the slider, which is connected to the pipeline through the connection seat, and the slider is fixed to the sliding ball. When the flange sleeve rotates, the sliding ball and the slider slide in the sliding groove to achieve sliding connection with the circumference of the flange sleeve. When the impact load acts, 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 an axial force is generated to cause the flange sleeve to move axially. At this time, the pipeline is pulled or compressed, the traction crank rotates, and the other end of the crank slides on the baffle, prompting the baffle to move up and down along the sliding groove, thereby achieving separation or compression with 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 an 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 retreats back, 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: Fig. 9 As shown, the lower end of the baffle is set to be V-shaped, and the end face is smoothly transitioned so that the contact of the push rod is a conical surface contact. Therefore, when the baffle continues to move downward, the conical surface contact force is N, and has a certain contact component force Nx that is 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 produce 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 pipeline and the crank, and a connecting shaft is provided on the connecting buckle for passing through the crank hole to realize rotational connection. The connecting buckle can realize the normal connection between the pipeline and the crank, and the displacement response can be transmitted through the length change of the thread, creating conditions for realizing the equipment's heavy load idling.

[0042] In this embodiment, a transmission toothed belt 25 is also included, and a transmission gear 26 is fixedly arranged on the gear shaft, and the transmission toothed belt is connected with the transmission gear to transmit power. The transmission gear of this embodiment is arranged in the middle of the gear shaft, and a set of detection mechanisms is 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 sliding groove, 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 as to accurately transmit traction and displacement.

[0045] This embodiment achieves large impact detection and response of complex equipment through a simple structure, effectively avoids overload damage, and effectively ensures 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, the flange shaft, the flange sleeve, and the pipeline, thereby adapting to any soil conditions.

[0047] In this embodiment, after idling is achieved and 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 solution of the present invention rather than to limit it. 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 solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A field stone detection device for agricultural machinery, comprising a flange shaft rotatably fixed to the agricultural machinery housing, a driving shaft rotatably arranged on the flange shaft and a saw blade fixedly arranged at both ends of the flange shaft, characterized in that: it also includes a detection mechanism and a reset mechanism, wherein the detection mechanism is respectively arranged at both ends of the flange shaft, and the detection mechanism comprises 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 sleeved on the guide post, a flange sleeve sleeved on the flange shaft and a baffle, the baffle being fixed on the flange shaft and having an arc surface on the contact end face with the flange sleeve, an arc mating surface engaged with the arc surface, 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, 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. The agricultural machinery housing is provided with a baffle slide groove, and one side of the baffle slide in the vertical direction is provided with a push rod and a push rod spring, and the other side is provided with a clutch switch. 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, and slides on the baffle from the other end of the crank, prompting the baffle to move up and down, thereby achieving disengagement or compression with 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 the field of agricultural machinery 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 outside the slide ball, and a connecting seat connected to the pipeline is provided on the slider.

3. The device for detecting stones in the field of agricultural machinery 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 realize rotational connection is provided on the connecting buckle.

4. The device for detecting stones in the field of agricultural machinery according to claim 1, characterized in that: The reset mechanism also includes a support seat, a rotating shaft is arranged on the support seat, and a rotating shaft hole is arranged in the middle of the crank.

5. The device for detecting stones in the field of agricultural machinery 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 the field of agricultural machinery 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.

Images