An implement suspension device for an agricultural work machine

Abstract

The utility model discloses an agricultural machine's machine tool suspension device, including support seat and drop rod, the drop rod has with support seat ball hinge's support end, the drop rod is connected with support seat and has the spacing mechanism for limiting the lateral swing amplitude size of drop rod, the spacing mechanism includes the spacing plate, the spacing plate has with support seat respectively along the lateral and vertical hinge's fixed end, the spacing plate still has with drop rod sliding connection's movable end, the fixed end is set up away from drop rod relative to movable end, the rotation center of fixed end and the rotation center line of drop rod's support end are collinear, be provided with the adjusting piece for adjusting the sliding distance size between movable end and drop rod. The scheme has solved the problem that machine tool suspension device bears lateral impact performance in the prior art is poor.

Description

Technical Field

[0001] This utility model relates to a implement suspension device for agricultural machinery. Background Technology

[0002] The implement suspension device of an agricultural work machine is a device that connects the implement to the frame of the agricultural work machine, thereby enabling the frame to move the implement together and supporting the lifting and lowering of the implement. Existing implement suspension devices consist of components such as a lower pull rod, an upper pull rod, a guide frame, and a limit rod.

[0003] Chinese patent document CN218483190U discloses a tractor suspension device, including a connecting frame, lifting rods, and pins. A limiting rod is rotatably mounted at each of the left and right ends of the outer side of the connecting frame. The limiting rods are rotatably connected to the front end of the outer side of the pull rod. The limiting rods are inclined inwards, improving the stability of the connection between the limiting rods and the pull rods. Two pull rods are rotatably mounted at the rear end of the outer side of the connecting frame, and a guide frame is welded to the rear end of the outer side of the pull rod. The rear end of the outer side of the pull rod is outwardly expanding, and its front end is perpendicular to the rear end face of the connecting frame, ensuring a stable connection between the pull rod and the guide frame. Lifting rods are rotatably mounted at the middle of the outer side of the pull rods, and an upper pull rod is provided between the left and right opposite faces of the two lifting rods. The lifting rods can rotate along the pull rods and connect to the tractor. The limiting rods and pull rods are each rotatably mounted on the connecting frame, with the two limiting rods located on the outer sides of the two pull rods respectively. The two limiting rods and the pull rods ensure a stable connection between the tractor and the external implement.

[0004] In the aforementioned prior art, the limiting rod uses a method similar to a pull screw to limit the pull-down rod. When the limiting rod is adjusted to the correct position, there is no space for relative movement between the pull-down rod and the limiting rod, which prevents the pull-down rod from swinging laterally. Consequently, the suspension device cannot buffer the lateral impact generated during machine operation, which can easily lead to damage to the suspension device. Utility Model Content

[0005] The purpose of this utility model is to provide a implement suspension device for agricultural machinery to solve the problem that the implement suspension device in the prior art has poor performance in withstanding lateral impact.

[0006] To achieve the above objectives, the basic solution of this utility model provides a implement suspension device for an agricultural work machine, including a support base and a pull rod. The pull rod has a support end that is ball-jointed with the support base. A limiting mechanism for limiting the lateral swing amplitude of the pull rod is connected between the pull rod and the support base. The limiting mechanism includes a limiting plate, which has a fixed end that is hinged to the support base laterally and vertically, respectively. The limiting plate also has a movable end that is slidably connected to the pull rod. The fixed end is located away from the pull rod relative to the movable end. The rotation center of the fixed end is collinear with the rotation center line of the support end of the pull rod. An adjusting member for adjusting the sliding distance is provided between the movable end and the pull rod.

[0007] The beneficial effects of this basic solution are as follows: by adjusting the relative sliding distance between the movable end of the limit plate and the pull rod through the adjusting component, the lateral swing amplitude of the pull rod under the action of the limit plate can be adjusted as needed. This allows the tool suspension device to have the corresponding ability to withstand lateral impact according to different tool operation requirements, thereby improving the performance of the tool suspension device in withstanding lateral impact and helping to extend the service life of the tool suspension device.

[0008] Preferably, the movable end of the limiting plate has a strip-shaped hole along its length, and the pull rod is statically connected to a positioning post that slides along the length of the strip-shaped hole. This arrangement, using the strip-shaped hole and positioning post to achieve a sliding connection between the limiting plate and the pull rod, simplifies the structure and facilitates processing.

[0009] Preferably, the positioning post and the pull rod are detachably connected. This design facilitates the installation and removal of the positioning post, making it easier to replace and maintain the post.

[0010] Preferably, the positioning post is provided with a stepped portion for adjusting the frictional force between the limiting plate and the pull rod. With this configuration, the positioning post uses the stepped portion to adjust the frictional force between the limiting plate and the pull rod, thereby changing the magnitude of the frictional resistance between the pull rod and the limiting plate during lateral swing. This frictional resistance dissipates the impact of the pull rod's lateral swing, further improving the performance of the machine's suspension device in withstanding lateral impacts.

[0011] Preferably, the adjusting member is threadedly connected to the limiting plate along the length direction parallel to the slot, and one end of the adjusting member is positioned directly opposite the positioning post. With this configuration, the position of the end of the adjusting member can be changed by rotating it, thereby adjusting the distance the positioning post can move within the slot, which facilitates the adjustment of the lateral swing amplitude of the pull rod. Moreover, the structure is simple and easy to operate.

[0012] Preferably, the adjusting member is located on the side of the slotted hole furthest from the fixed end. This arrangement ensures that the limiting plate primarily bears tensile force when restricting the swing amplitude of the pull rod, thus reducing the likelihood of damage to the limiting plate and improving the structural stability of the suspension device. Simultaneously, the adjusting member's location on the side of the slotted hole furthest from the fixed end minimizes the impact of the limiting plate on its installation, facilitating its installation and use.

[0013] Preferably, the adjusting member is threadedly connected with a lock nut. This design prevents the adjusting member from moving due to vibration, thus improving its reliability.

[0014] Preferably, the support base includes a hinge pin that connects to both the support end and the fixed end, and a spacer sleeve is provided on the hinge pin between the support end and the fixed end. This arrangement, with the hinge pin connecting to both the support end and the fixed end simultaneously, ensures that the support end and the fixed end can always rotate coaxially, thereby improving the reliability of the structure. The spacer sleeve maintains a certain distance between the support end and the fixed end, causing the hinge pin, the limiting plate, and the pull rod to form a triangular structure, which further enhances the reliability of the structure. More preferably, the spacer sleeve and the hinge pin are integrally formed. This integral forming method reduces the number of parts and simplifies assembly. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of an embodiment of the implement suspension device of an agricultural work machine according to the present invention; Figure 2 for Figure 1 Exploded view of point A in the middle. Detailed Implementation

[0016] As those skilled in the art will know, the "lateral swing" in this solution refers to the swing of the pull rod toward the left and right sides of the agricultural machine when the agricultural machine is in motion.

[0017] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: support base 1, hinge pin 11, spacer sleeve 2, limit plate 3, fixed end 31, movable end 32, strip hole 33, pull rod 4, support end 41, positioning post 5, adjusting component 6, and anti-loosening nut 7.

[0018] The basic implementation examples are as follows: Figure 1 and Figure 2 The image shows a suspension device for an agricultural work machine, comprising a support base 1 and a pull rod 4. The pull rod 4 has a support end 41 that is ball-jointed with the support base 1. A limiting mechanism for limiting the lateral swing amplitude of the pull rod 4 is connected between the pull rod 4 and the support base 1. In this embodiment, the limiting mechanism includes a limiting plate 3, which has a fixed end 31 that is hinged to the support base 1 in both the lateral and vertical directions, allowing the limiting plate to rotate relative to the support base in both the lateral and vertical directions. The limiting plate 3 also has a movable end 32 that is slidably connected to the pull rod 4. The fixed end 31 is positioned away from the pull rod 4 relative to the movable end 32. The rotation center of the fixed end 31 is collinear with the rotation center line of the support end 41 of the pull rod 4. An adjusting member 6 for adjusting the sliding distance is provided between the movable end 32 and the pull rod 4.

[0019] In this embodiment, the movable end 32 of the limiting plate 3 has a strip-shaped hole 33 along its length, and the pull rod 4 is statically connected to a positioning post 5 that slides along the length of the strip-shaped hole 33. In this embodiment, the positioning post 5 is preferably detachably connected to the pull rod 4. The positioning post has a stepped portion for adjusting the friction between the limiting plate and the pull rod. Specifically, the positioning post 5 can be a bolt with a smooth threaded section, which can slide along the strip-shaped hole 33, thereby enabling the limiting plate 3 to slide with the pull rod 4 under the action of the positioning post 5; the enlarged head at the end of the threaded section is the stepped portion, so that the positioning post 5 connects the limiting plate 3 and the pull rod 4 after passing through the strip-shaped hole 33 and the pull rod 4, and the friction between the limiting plate 3 and the pull rod 4 can be adjusted by adjusting the locking force of the positioning post 5.

[0020] In this embodiment, the adjusting member 6 is threadedly connected to the limiting plate 3 along the length direction parallel to the strip hole 33, and one end of the adjusting member 6 is positioned directly opposite the positioning post 5. Preferably, the adjusting member 6 is located on the side of the strip hole 33 away from the fixed end 31. In this embodiment, the adjusting member 6 is threadedly connected to an anti-loosening nut 7, which locks the adjusting member 6 and prevents loosening by abutting against the limiting plate 3.

[0021] In this embodiment, the support base 1 includes a hinge pin 11 that connects to both the support end 41 and the fixed end 31. A spacer sleeve 2 is provided on the hinge pin 11 between the support end 41 and the fixed end 31. Specifically, the hinge pin 11 passes through the support end 41 and the fixed end 31, thereby enabling the support end 41 and the fixed end 31 to be hinged to the support base 1 by rotating around the hinge pin 11. The gap between the pin hole on the fixed end 31 through which the hinge pin 11 passes and the hinge pin 11 is set to be slightly larger, so that the limiting plate 3 can swing slightly laterally to accommodate the adjustment of the limiting plate 3, which helps to reduce wear between the limiting plate 3 and the hinge pin 11. In this embodiment, the spacer sleeve 2 is fitted onto the hinge pin 11 to facilitate assembly. Of course, in other embodiments, the spacer sleeve can be integrally formed with the hinge pin.

[0022] In this embodiment, there are two pull rods and two limiting mechanisms. The two pull rods are arranged in a mirror image on both sides of the forward direction of the agricultural machine, and the two limiting mechanisms are arranged in a mirror image on both sides of the forward direction of the agricultural machine.

[0023] The specific implementation process is as follows: The suspension device typically consists of two pull rods 4 and corresponding support seats 1 symmetrically arranged along the centerline of the implement. During installation, the support seat 1 connects to the frame of the agricultural work machine, and the end of the pull rod 4 furthest from the support seat 1 connects to the implement, thus connecting the implement to the frame via the pull rod 4. When adjusting the lateral swing amplitude of the pull rod 4, the position of the end of the adjusting component 6 is changed by rotating it, thereby altering the sliding range of the positioning pin 5 in the slot 33. The size of the movement range of the positioning pin 5 determines the lateral swing amplitude of the pull rod 4, thus achieving the purpose of adjusting the lateral swing amplitude of the pull rod 4. The relative sliding distance between the movable end 32 of the limiting plate 3 and the pull rod 4 is adjusted by the adjusting component 6, allowing the lateral swing amplitude of the pull rod 4 under the action of the limiting plate 3 to be adjusted as needed. This enables the implement suspension device to withstand lateral impacts according to different implement operation requirements, which is beneficial for improving the service life of the implement suspension device.

[0024] The above description is merely an embodiment of this utility model, and common knowledge such as specific structures and characteristics of the solution is not described in detail here. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model, and these should also be considered within the protection scope of this utility model. These modifications and improvements will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.

Claims

1. A implement suspension device for an agricultural work machine, comprising a support base and a pull rod, wherein the pull rod has a support end that is ball-jointed with the support base, and a limiting mechanism for limiting the lateral swing amplitude of the pull rod is connected between the pull rod and the support base, characterized in that: The limiting mechanism includes a limiting plate, which has a fixed end that is hinged to the support base in the horizontal and vertical directions respectively. The limiting plate also has a movable end that is slidably connected to the pull rod. The fixed end is located away from the pull rod relative to the movable end. The rotation center of the fixed end is collinear with the rotation center line of the support end of the pull rod. An adjusting member for adjusting the sliding distance is provided between the movable end and the pull rod.

2. The implement suspension device for an agricultural work machine according to claim 1, characterized in that: The movable end of the limiting plate is provided with a strip-shaped hole along its length, and the pull rod is statically connected to a positioning post that slides with the strip-shaped hole along its length.

3. The implement suspension device for an agricultural work machine according to claim 2, characterized in that: The positioning post and the pull rod are detachably connected.

4. The implement suspension device for an agricultural work machine according to claim 2, characterized in that: The positioning post is provided with a stepped portion for adjusting the friction between the limiting plate and the pull rod.

5. The implement suspension device for an agricultural work machine according to claim 2, 3 or 4, characterized in that: The adjusting component is threadedly connected to the limiting plate along the length direction parallel to the strip hole, and one end of the adjusting component is positioned opposite the positioning post.

6. The implement suspension device for an agricultural work machine according to claim 5, characterized in that: The adjusting element is located on the side of the strip hole away from the fixed end.

7. The implement suspension device for an agricultural work machine according to claim 6, characterized in that: The adjusting component is threadedly connected with a lock nut.

8. The implement suspension device for an agricultural work machine according to claim 7, characterized in that: The support base includes a hinge pin that connects to both the support end and the fixed end, and a spacer sleeve is provided on the hinge pin between the support end and the fixed end.

9. The implement suspension device for an agricultural work machine according to claim 8, characterized in that: The spacer sleeve and the hinge pin are integrally formed.

10. The implement suspension device for an agricultural work machine according to any one of claims 6 to 9, characterized in that: There are two pull rods and two limiting mechanisms. The two pull rods are arranged in a mirror image on both sides of the forward direction of the agricultural machine, and the two limiting mechanisms are arranged in a mirror image on both sides of the forward direction of the agricultural machine.

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