Agricultural machinery pin shaft with limiting function

Abstract

The utility model discloses an agricultural machinery pin shaft with a limiting function, and relates to the field of agricultural machinery pin shafts. The hinge pin comprises a first agricultural machine connecting block, a second agricultural machine connecting block and a hinge pin body, the two ends of the hinge pin body are each provided with two thread sets, the hinge pin body is in threaded connection with abutting blocks through the thread sets at the two ends, and limiting discs are fixed to the ends, away from the horizontal central axis of the hinge pin body, of the abutting blocks. The hinge pin comprises a hinge pin body, a plurality of limiting discs are arranged on the hinge pin body, fixing plates are rotationally clamped to the middles of the limiting discs, and two sets of limiting clamping blocks are fixed to the portion, close to the top of the hinge pin body, of the bottom of the fixing plate and clamped with a first agricultural machine connecting block in an inserted mode. And meanwhile, stable limiting connection can be provided for the pin shaft, so that the stability of the pin shaft in the using process is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of agricultural machinery pin shafts, in particular to an agricultural machinery pin shaft with a limiting function. Background Art

[0002] Agricultural machinery pins, an integral part of agricultural mechanization, perform the crucial tasks of connection and transmission. Their stability and durability ensure the efficient operation of agricultural machinery, thereby improving agricultural production efficiency. The use of agricultural machinery pins has not only advanced agricultural modernization but also reduced farmers' labor intensity, improved the quality and yield of agricultural products, and injected strong momentum into the sustainable development of the rural economy. However, traditional agricultural machinery pins, after securing the machinery, require external fixings to prevent them from falling. This is cumbersome and reduces stability, creating the risk of the pin falling during use. Utility Model Content

[0003] Based on this, the purpose of the utility model is to provide an agricultural machinery pin shaft with a limiting function, which can more conveniently adjust the diameter detection area of ​​the pin shaft at the connection of the agricultural machinery, thereby better enhancing the stability of the connection point, and at the same time can provide a stable limiting connection for the pin shaft, thereby effectively improving the stability of the pin shaft during use.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an agricultural machinery pin shaft with a limiting function, comprising a first agricultural machinery connecting block, a second agricultural machinery connecting block and a pin shaft body, two sets of thread groups are provided at both ends of the pin shaft body, and the pin shaft body is threadedly connected to a tightening block through the thread groups at both ends, the tightening block is fixed with a limiting disk at one end away from the horizontal central axis of the pin shaft body, and a fixed plate is rotatably engaged with the middle part of the limiting disk, and two sets of limiting blocks are fixed at the bottom of the fixed plate near the top of the pin shaft body, and are plugged and engaged with the first agricultural machinery connecting block.

[0005] By adopting the above technical solution, the pin body is used to connect the first agricultural machinery connecting block and the second agricultural machinery connecting block and provide limiting. The pin body is threadedly connected to the tightening block through the thread groups at both ends of the outer side. The tightening block moves on the outer side of the pin body by rotation and provides a tightening function for the first agricultural machinery connecting block. The limiting plate is used to connect the tightening block and the first knob to form an integrated structure, and at the same time form a limiting locking connection for the fixed plate. A group of fixed plates are plugged and engaged with the first agricultural machinery connecting block through two groups of limiting blocks at the bottom to provide a lateral limiting function for the pin body.

[0006] Furthermore, a groove structure for plugging and engaging the second agricultural machinery connecting block is provided inside the first agricultural machinery connecting block, and the first agricultural machinery connecting block and the second agricultural machinery connecting block are plugged and engaged.

[0007] By adopting the above technical solution, a groove structure for plugging and engaging the second agricultural machinery connecting block is opened inside the first agricultural machinery connecting block, thereby achieving a stable plug-in connection between the two connecting blocks. The plug-in connection between the first agricultural machinery connecting block and the second agricultural machinery connecting block not only enhances the structural strength between the two, but also effectively prevents loosening or detachment that may occur during use.

[0008] Furthermore, two sets of hole pile structures are provided inside the first agricultural machinery connecting block and the second agricultural machinery connecting block, and are arranged correspondingly in the upper and lower parts, and the pin shaft bodies are inserted into the hole pile structures inside the first agricultural machinery connecting block and the second agricultural machinery connecting block.

[0009] By adopting the above technical solution, by opening two sets of hole pile structures inside the first agricultural machinery connecting block and the second agricultural machinery connecting block, and arranging them correspondingly up and down, accurate positioning can be provided by plugging the pin shaft body.

[0010] Furthermore, a first knob is fixed to one end of the limit plate away from the horizontal central axis of the pin body, and a plurality of groups of arc structures are evenly spaced outside the first knob to increase friction with the operator's hand.

[0011] By adopting the above technical solution, by fixing the first knob at the end of the limit plate away from the horizontal central axis of the pin shaft body, a convenient force application point is provided for the operator. Several groups of arc structures are evenly spaced on the outside of the first knob, which effectively increase the contact area and friction between the knob and the operator's hand.

[0012] Furthermore, fastening sleeves are fixed on both sides of the fixing plate, and the interiors of the two sets of fastening sleeves are threadedly connected to fastening rods, and a second knob is fixed on the top of the fastening rod.

[0013] By adopting the above technical solution, by fixing the fastening sleeves on both sides of the fixing plate, a stable interface is provided for the threaded connection of the fastening rod, and by fixing the second knob on the top of the fastening rod, a convenient rotation point is provided for the operator.

[0014] Furthermore, the outer side of one end of the pressing block away from the limiting plate is a slope structure, and presses against the first agricultural machinery connecting block.

[0015] By adopting the above technical solution, by designing the outer side of the end of the clamping block away from the limit plate into a slope structure, the clamping block can fit more smoothly with the internal hole pile structure of the first agricultural machinery connecting block during the tightening process.

[0016] In summary, the present invention has the following beneficial effects:

[0017] 1. The utility model provides two sets of abutment blocks, which are respectively threadedly connected to the two ends of the pin body. By turning the first knob, the abutment blocks are driven to rotate through the limit plate, thereby allowing the abutment blocks to move outside the pin body. The abutment blocks are tapered, so that the contact distances between the pin body and the first and second agricultural machinery connecting blocks can be adjusted by the movement of the abutment blocks.

[0018] 2. In the present invention, the fixed plate is engaged and rotated on the outside of the limit plate, so that when the first knob drives the tightening block to rotate through the limit plate, the fixed plate above the pin shaft body forms a limit engagement with the first agricultural machinery connecting block through the two sets of limit blocks at the bottom, so that the fixed plate has stability, and by threading the two sets of fastening rods and the two sets of fastening sleeves on the two sets of fixed plates, the two sets of fastening rods are used to limit the upper line of the two sets of fixed plates, and the two sets of limit blocks will provide horizontal limiting functions for the two sets of fixed plates, thereby providing up and down and horizontal limiting functions for the pin shaft body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the utility model in a disassembled state;

[0021] Figure 3 This is a bottom view of the structure of the connection between the first agricultural machinery connecting block and the pin shaft body of the utility model;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the connection between the limit plate and the fixed plate of the utility model.

[0023] In the figure: 1. first agricultural machinery connecting block; 2. second agricultural machinery connecting block; 3. pin shaft body; 4. tightening block; 5. limit plate; 6. first knob; 7. fixing plate; 8. fastening sleeve; 9. limit block; 10. fastening rod; 11. second knob. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; 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 a connection between the internal parts of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The following describes an embodiment of the present invention based on its overall structure.

[0028] In this embodiment:

[0029] A pin shaft for agricultural machinery with a limiting function, such as Figure 1-Figure 4 As shown, it includes a first agricultural machinery connecting block 1, a second agricultural machinery connecting block 2 and a pin shaft body 3. Two sets of thread groups are provided at both ends of the pin shaft body 3, and the pin shaft body 3 is threadedly connected to a tightening block 4 through the thread groups at both ends. A limit plate 5 is fixed to the end of the tightening block 4 away from the horizontal central axis of the pin shaft body 3, and a fixing plate 7 is rotatably engaged in the middle of the limit plate 5. Two sets of limit blocks 9 are fixed to the bottom of the fixing plate 7 near the top of the pin shaft body 3, and are plugged and engaged with the first agricultural machinery connecting block 1;

[0030] Among them, by setting the thread groups at both ends of the pin body 3, the clamping block 4 can be firmly threadedly connected to the pin body 3. When the clamping block 4 is screwed on the pin body 3, they can fit tightly between the first agricultural machinery connecting block 1 and the second agricultural machinery connecting block 2, thereby effectively preventing the pin from loosening or falling off during operation. By fixing the limit plate 5 at one end of the clamping block 4 away from the horizontal central axis of the pin body 3 and rotating the middle part thereof to engage with the fixed plate 7, the stability and limiting function of the pin are further enhanced, especially the two groups of limiting blocks 9 fixed at the bottom of the fixed plate 7 near the top of the pin body 3, which are plugged into and engaged with the first agricultural machinery connecting block 1 to form an effective limiting mechanism.

[0031] See Figure 1 、 Figure 2 and Figure 3 The first agricultural machinery connection block 1 has a groove structure for plugging and engaging with the second agricultural machinery connection block 2, and the first agricultural machinery connection block 1 and the second agricultural machinery connection block 2 are plugged and engaged;

[0032] The plug-in engagement between the first agricultural machinery connecting block 1 and the second agricultural machinery connecting block 2 not only enhances the structural strength between the two, but also effectively prevents loosening or separation that may occur during use.

[0033] See Figure 1 、 Figure 2 and Figure 3 The first agricultural machinery connecting block 1 and the second agricultural machinery connecting block 2 are both provided with two sets of hole pile structures, which are arranged correspondingly up and down, and the pin shaft body 3 is inserted into the hole pile structures inside the first agricultural machinery connecting block 1 and the second agricultural machinery connecting block 2;

[0034] Among them, by opening two sets of hole pile structures inside the first agricultural machinery connecting block 1 and the second agricultural machinery connecting block 2, and arranging them correspondingly up and down, it is ensured that the pin shaft body 3 can be accurately inserted into the corresponding hole piles of the two connecting blocks, thereby achieving precise matching and stable connection between the pin shaft and the connecting blocks.

[0035] See Figure 1 、 Figure 2 and Figure 4 , a first knob 6 is fixed to one end of the limit plate 5 away from the horizontal central axis of the pin body 3, and a plurality of groups of arc structures are evenly spaced on the outside of the first knob 6 to increase the friction with the operator's hand;

[0036] Among them, by fixing the first knob 6 at the end of the limit plate 5 away from the horizontal central axis of the pin shaft body 3, the operator can easily rotate the limit plate 5 and the tightening block 4 connected thereto, thereby realizing the tightening or loosening operation of the pin shaft body 3. Several groups of arc structures are evenly spaced on the outside of the first knob 6, which improves the stability and control of the operator when rotating the knob, and can also prevent operational errors or safety accidents caused by hand slippage.

[0037] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , fastening sleeves 8 are fixed on both sides of the fixing plate 7, and the interiors of the two sets of fastening sleeves 8 are threadedly connected with fastening rods 10, and a second knob 11 is fixed to the top of the fastening rod 10;

[0038] Among them, by fixing the fastening sleeve 8 on both sides of the fixing plate 7, it is ensured that the fastening rod 10 can be accurately threadedly connected with the fastening sleeve 8, thereby achieving a firm fixation of the fixing plate 7. By fixing the second knob 11 on the top of the fastening rod 10, the fastening operation is made simpler and faster.

[0039] See Figure 2 、 Figure 3 and Figure 4 The outer side of one end of the pressing block 4 away from the limiting plate 5 is a slope structure, and is pressed against the first agricultural machinery connecting block 1;

[0040] Among them, the inclined surface structure can increase the diameter distance of the pin body 3 in disguise by the moving distance of the clamping block 4, so that the pin body 3 can have adjustable adaptability between the first agricultural machinery connecting block 1 and the second agricultural machinery connecting block 2, and make the pin body 3 more stable in the hole structure between the first agricultural machinery connecting block 1 and the second agricultural machinery connecting block 2.

[0041] The implementation principle of the present invention is as follows: first, the first agricultural machinery connecting block 1 and the second agricultural machinery connecting block 2 are fixedly connected to the agricultural machinery to be connected to the outside world and the load-bearing machinery to be hung externally through the existing installation method, and the second agricultural machinery connecting block 2 is inserted into the interior of the first agricultural machinery connecting block 1, and the hole structures opened on the first agricultural machinery connecting block 1 and the second agricultural machinery connecting block 2 are aligned, and then the pin shaft body 3 is inserted into the hole structure between the first agricultural machinery connecting block 1 and the second agricultural machinery connecting block 2, and then a group of tightening blocks 4 with limited card blocks 9 are picked up through the first knob 6, and by turning the first knob 6, the tightening block 4 is connected to the thread on the top of the pin shaft body 3, so that the bottom of the tightening block 4 is aligned with the hole pile structure inside the first agricultural machinery connecting block 1 When the first screw is in the lock hole 14, the first screw is tightened and the second screw is tightened, and the second screw is tightened and the second screw is tightened. When the second screw is tightened, the first screw is tightened and the second screw is tightened, and the second screw is tightened and the second screw is tightened.

[0042] Parts not involved in the present invention are the same as those in the prior art or can be implemented by using the prior art, and will not be described in detail here.

[0043] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A pin shaft for agricultural machinery with a limiting function, characterized in that: It comprises a first agricultural machinery connecting block (1), a second agricultural machinery connecting block (2) and a pin shaft body (3); Two sets of threaded groups are provided at both ends of the pin shaft body (3), and the pin shaft body (3) is threadedly connected to a clamping block (4) through the threaded groups at both ends. A limiting disk (5) is fixed to one end of the clamping block (4) away from the horizontal central axis of the pin shaft body (3), and a fixing plate (7) is rotatably engaged in the middle of the limiting disk (5). Two sets of limiting blocks (9) are fixed to the bottom of the fixing plate (7) near the top of the pin shaft body (3), and are plugged and engaged with the first agricultural machinery connecting block (1).

2. The agricultural machinery pin with a limiting function according to claim 1, characterized in that: A groove structure for plugging and engaging the second agricultural machinery connecting block (2) is provided inside the first agricultural machinery connecting block (1), and the first agricultural machinery connecting block (1) and the second agricultural machinery connecting block (2) are plugged and engaged.

3. The agricultural machinery pin with a limiting function according to claim 1, characterized in that: The first agricultural machinery connecting block (1) and the second agricultural machinery connecting block (2) are both provided with two groups of hole pile structures, which are arranged in an upper and lower corresponding manner, and the pin shaft bodies (3) are inserted into the hole pile structures inside the first agricultural machinery connecting block (1) and the second agricultural machinery connecting block (2).

4. The agricultural machinery pin with a limiting function according to claim 1, characterized in that: A first knob (6) is fixed to one end of the limit plate (5) away from the horizontal central axis of the pin shaft body (3), and a plurality of groups of arc structures are evenly spaced outside the first knob (6) to increase friction with the operator's hand.

5. The agricultural machinery pin with a limiting function according to claim 1, characterized in that: Both sides of the fixing plate (7) are fixed with fastening sleeves (8), and the interiors of the two sets of fastening sleeves (8) are threadedly connected with fastening rods (10), and a second knob (11) is fixed on the top of the fastening rod (10).

6. The agricultural machinery pin with a limiting function according to claim 1, characterized in that: The outer side of one end of the pressing block (4) away from the limiting plate (5) is a sloped structure and presses against the first agricultural machinery connecting block (1).

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