Harvester ladder and harvester

Abstract

This application relates to a harvester ladder and a harvester, belonging to the field of agricultural equipment technology, to optimize the structure of the harvester ladder to a certain extent, simplify the transmission structure, and reduce manufacturing and maintenance costs. The harvester ladder provided by this utility model includes a ladder assembly, a drive assembly, and a positioning assembly; one end of the drive assembly is rotatably connected to the positioning assembly, and the other end is rotatably connected to the side of the ladder assembly; the ladder assembly has a docking part, the positioning assembly has a positioning part, and the docking part and the positioning part are rotatably connected; the drive assembly includes a telescopic drive component, and the extension and retraction of the telescopic drive component can drive the ladder assembly to rotate relative to the positioning assembly.

Description

Technical Field

[0001] This application relates to the field of agricultural equipment technology, and more specifically, to a harvester ladder and a harvester. Background Technology

[0002] With the rapid development of agricultural mechanization, harvesters, as important equipment in agricultural production, are constantly improving in terms of functionality and convenience. Harvesters usually need to operate in fields, so their passability is particularly important, especially their width, which directly affects their ability to move through narrow field ridges or roads.

[0003] To facilitate maintenance and repair of harvesters, ladders are typically installed on the side of the harvester, allowing personnel to access higher areas for inspection or repair. However, fixed ladders significantly increase the overall width of the harvester, thus reducing its throughput. To address this issue, most harvesters currently employ a rotating ladder design. When needed, the ladder rotates to the side of the harvester for climbing, and when not in use, it is retracted to the rear of the harvester to avoid increasing its overall width.

[0004] Existing rotating ladders typically achieve their rotation function through gear meshing or sprocket and chain drive mechanisms. While this transmission method can meet the ladder's rotation requirements, it involves numerous mechanical transmission components, complicating the structure, increasing manufacturing costs, maintenance difficulty, and failure rate. Furthermore, gears and chains may experience wear and loosening during long-term use, further affecting the ladder's reliability and lifespan.

[0005] Therefore, there is an urgent need to provide a harvester ladder and a harvester to solve the above problems to some extent. Utility Model Content

[0006] The purpose of this application is to provide a harvester ladder and a harvester, so as to optimize the structure of the harvester ladder to a certain extent, simplify the transmission structure, and reduce manufacturing and maintenance costs.

[0007] To achieve the above objectives, the harvester ladder provided in this application includes a ladder assembly, a drive assembly, and a positioning assembly; one end of the drive assembly is rotatably connected to the positioning assembly, and the other end is rotatably connected to the side of the ladder assembly; the ladder assembly has a docking portion, the positioning assembly has a positioning portion, and the docking portion is rotatably connected to the positioning portion; the drive assembly includes a telescopic drive member, and the telescopic drive member can drive the ladder assembly to rotate relative to the positioning assembly by telescopic extension and retraction.

[0008] The positioning part is a rotating shaft, which is rotatably connected to the positioning assembly. The docking part is a docking sleeve, which is fitted onto the rotating shaft and is fixedly connected to the rotating shaft.

[0009] Specifically, the side wall of the ladder assembly is provided with a first mounting seat, and the telescopic end of the telescopic drive component is rotatably connected to the first mounting seat.

[0010] Furthermore, the telescopic drive component includes a drive motor and an electric telescopic rod, the output end of the drive motor is connected to the electric telescopic rod, and the telescopic end of the electric telescopic rod is rotatably connected to the first mounting base.

[0011] The harvester ladder provided by this utility model also includes a second mounting base, which is fixedly mounted on the positioning assembly, and the drive motor is rotatably connected to the second mounting base.

[0012] Specifically, the first mounting base includes a base plate, a connecting plate, and a support plate; the base plate is fitted against the side wall of the ladder assembly and is fixedly mounted on the side wall of the ladder assembly; the connecting plate is perpendicular to the base plate and has a connecting hole, and the telescopic end of the electric telescopic rod is rotatably connected to the connecting hole; the support plate is triangular, and the first right-angled side of the support plate is tightly fitted against the base plate and fixedly connected to the base plate, and the second right-angled side is tightly fitted against the connecting plate and fixedly connected to the connecting plate.

[0013] Furthermore, the harvester ladder provided by this utility model also includes a connecting component and a positioning component. The connecting component is U-shaped, forming a docking space. The connecting plate enters the docking space. The connecting component has an alignment hole. The positioning component passes through the alignment hole and the connecting hole, so that the connecting component is rotatably connected to the connecting plate.

[0014] The ladder assembly includes a rotating frame, a ladder frame, and multiple steps. The rotating frame is triangular, with its first vertex forming the docking sleeve. The first mounting base is fixedly disposed on the side wall of the rotating frame. One end of the ladder frame is connected to the rotating frame. The ladder frame includes two parallel first mounting beams and a second mounting beam. The two ends of the multiple steps are respectively connected to the first mounting beam and the second mounting beam, and the multiple steps are spaced apart along the length direction of the first mounting beam and the second mounting beam.

[0015] Specifically, the harvester ladder provided by this utility model further includes a top plate and a limiting mechanism; the top plate is located above the ladder assembly, and the limiting mechanism includes a first limiting member and a second limiting member. The first limiting member is disposed at the extreme position of the top plate corresponding to the retraction of the electric telescopic rod, and a first mating member is formed on the first mounting beam corresponding to the position of the first limiting member. The second limiting member is disposed at the extreme position of the top plate corresponding to the extension of the electric telescopic rod, and a second mating member is formed on the second mounting beam corresponding to the position of the second limiting member. The first mating member is detachably connected to the first limiting member, and the second mating member is detachably connected to the second limiting member.

[0016] Compared with existing technologies, the harvester ladder provided in this application has the following advantages:

[0017] The harvester ladder provided in this application includes a ladder assembly, a drive assembly, and a positioning assembly; one end of the drive assembly is rotatably connected to the positioning assembly, and the other end is rotatably connected to the side of the ladder assembly; the ladder assembly has a docking part, the positioning assembly has a positioning part, and the docking part and the positioning part are rotatably connected; the drive assembly includes a telescopic drive member, and the telescopic drive member can drive the ladder assembly to rotate relative to the positioning assembly by telescopic extension.

[0018] Analysis shows that the positioning assembly provides a mounting base for the drive assembly and the ladder assembly. This application connects one end of the drive assembly to the positioning assembly and the other end to the side of the ladder assembly, with the ladder assembly forming a docking part and the positioning assembly forming a positioning part. This allows the ladder assembly to rotate relative to the positioning assembly through the positioning part and the docking part. Furthermore, the extension of the telescopic drive component of the drive assembly drives the rotation of the ladder assembly.

[0019] When the telescopic drive component extends to its limit position, the ladder assembly can rotate to its maximum extended position, enabling workers to climb and perform tasks at height. This position is located on the side of the harvester. Since this state increases the width of the harvester, the ladder assembly needs to be retracted during non-operational periods. When the ladder assembly needs to be retracted, the telescopic drive component retracts, allowing the ladder assembly to rotate to its maximum retracted position, located at the rear of the harvester. This ensures the width of the harvester and improves its throughput.

[0020] In this application, the docking part and the positioning part can adopt various structures to realize their rotation. For example, the docking part is an ear plate, the positioning part is a positioning seat, the ear plate and the positioning seat are docked, and the rotational connection between the two is realized by setting connecting parts such as pins.

[0021] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the harvester ladder provided in the first embodiment of this application;

[0024] Figure 2 This is a schematic diagram of the harvester ladder in the recovery state provided in the first embodiment of this application;

[0025] Figure 3 This is a schematic diagram of the connection of the telescopic drive component in the harvester ladder provided in the first embodiment of this application.

[0026] Icons: 1-Positioning assembly; 2-Drive motor; 3-Electric telescopic rod; 4-First mounting base; 401-Base plate; 402-Connecting plate; 403-Support plate; 5-Second mounting base; 6-Connecting component; 7-Climbing ladder assembly; 701-Rotating frame; 702-Climbing ladder frame; 703-Step; 8-Top plate. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] In the description of this application, it should be noted that the terms "inner" and "outer," 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 commonly used when the product is in use. They are used only for the convenience of describing this application and for 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 this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] like Figures 1-3 As shown, the harvester ladder provided in this application includes a ladder assembly 7, a drive assembly, and a positioning assembly 1; one end of the drive assembly is rotatably connected to the positioning assembly 1, and the other end is rotatably connected to the side of the ladder assembly 7; the ladder assembly 7 has a docking portion, the positioning assembly 1 has a positioning portion, and the docking portion and the positioning portion are rotatably connected; the drive assembly includes a telescopic drive member, and the telescopic drive member can drive the ladder assembly 7 to rotate relative to the positioning assembly 1.

[0031] Compared with existing technologies, the harvester ladder provided in this application has the following advantages:

[0032] The harvester ladder provided in this application provides a mounting base for the drive assembly and the ladder assembly 7 through the positioning assembly 1. This application achieves rotational connection between one end of the drive assembly and the positioning assembly 1, and rotational connection between the other end and the side of the ladder assembly 7, with the ladder assembly 7 forming a docking part and the positioning assembly 1 forming a positioning part. Thus, the ladder assembly 7 can rotate relative to the positioning assembly 1 through the positioning part and the docking part. Furthermore, the rotation of the ladder assembly 7 can be driven by the extension of the telescopic drive component of the drive assembly.

[0033] When the telescopic drive component extends to its limit position, the ladder assembly 7 can rotate to its maximum extended position, which enables workers to climb and perform tasks at height. This position is located on the side of the harvester. Since this state increases the width of the harvester, the ladder assembly 7 needs to be retracted during non-operational periods. When the ladder assembly 7 needs to be retracted, the telescopic drive component retracts, allowing the ladder assembly 7 to rotate to its maximum retracted position, which is located at the rear of the harvester. This ensures the width of the harvester and improves its throughput.

[0034] In this application, the docking part and the positioning part can adopt various structures to realize their rotation. For example, the docking part is an ear plate, the positioning part is a positioning seat, the ear plate and the positioning seat are docked, and the rotational connection between the two is realized by setting connecting parts such as pins.

[0035] Preferably, such as Figures 1-3 As shown, the positioning part in this application is a rotating shaft, which is rotatably connected to the positioning assembly 1. The docking part is a docking sleeve, which is fitted on the rotating shaft and is fixedly connected to the rotating shaft.

[0036] Since the rotating shaft is rotatably connected to the positioning assembly 1, the ladder assembly 7 can be rotated under the telescopic driving action of the telescopic drive component by fixing the docking sleeve on the rotating shaft.

[0037] The rotational connection between the rotating shaft and the positioning assembly 1 can be achieved through a bearing structure. That is, the positioning assembly 1 has a positioning post, a bearing is fitted on the positioning post, and the rotating shaft is fitted on the outer ring of the bearing, thereby enabling the rotational connection between the rotating shaft and the positioning assembly 1.

[0038] Optionally, such as Figure 3 As shown, the side wall of the ladder assembly 7 in this application is provided with a first mounting seat 4, and the telescopic end of the telescopic drive component is rotatably connected to the first mounting seat 4.

[0039] The first mounting base 4 provides a mounting foundation for the telescopic end of the telescopic drive component, and allows the telescopic end of the telescopic drive component to have a certain distance from the side wall of the ladder assembly 7, thereby allowing the telescopic end to have a certain amount of room to move, and thus enabling the drive of the ladder assembly 7.

[0040] It should be noted that the telescopic drive component in this application can adopt a telescopic structure such as a cylinder or a hydraulic cylinder to drive the ladder assembly 7.

[0041] Preferably, such as Figures 1-3 As shown, the telescopic drive component in this application includes a drive motor 2 and an electric telescopic rod 3. The output end of the drive motor 2 is connected to the electric telescopic rod 3, and the telescopic end of the electric telescopic rod 3 is rotatably connected to the first mounting base 4. Since the hydraulic cylinder needs to be equipped with an oil supply line and a pump station to provide pressurized oil to the hydraulic cylinder, and the air cylinder also needs to use an air pump to supply compressed air, and also needs to be equipped with an air supply line, the drive form of using a motor in conjunction with the electric telescopic rod 3 is cleaner, the structure is simpler and more direct, reduces manufacturing costs, and saves space.

[0042] Optionally, such as Figure 3 As shown, the harvester ladder provided by this utility model also includes a second mounting base 5, which is fixedly mounted on the positioning assembly 1, and the drive motor 2 is rotatably connected to the second mounting base 5.

[0043] By setting the second mounting base 5, a mounting base can be provided for the drive motor 2. Since the drive motor 2 in this application is rotatably connected to the second mounting base 5, it will not affect the overall telescopic drive process and cause interference to the ladder assembly 7.

[0044] It is understandable that by setting the second mounting base 5, a certain distance can be made between the drive motor 2 and the positioning assembly 1, thereby providing sufficient rotation space for the drive motor 2 and thus realizing the function of driving the ladder assembly 7 to rotate.

[0045] Optionally, such as Figure 3 As shown, the first mounting base 4 in this application includes a base plate 401, a connecting plate 402, and a support plate 403; the base plate 401 is attached to the side wall of the ladder assembly 7 and is fixedly mounted on the side wall of the ladder assembly 7; the connecting plate 402 is perpendicular to the base plate 401 and has a connecting hole formed on it, and the telescopic end of the electric telescopic rod 3 is rotatably connected to the connecting hole; the support plate 403 is triangular, and the first right-angled side of the support plate 403 is tightly attached to the base plate 401 and is fixedly connected to the base plate 401, and the second right-angled side is tightly attached to the connecting plate 402 and is fixedly connected to the connecting plate 402.

[0046] The base plate 401 increases the contact area between the first mounting base 4 and the ladder assembly 7, making the installation of the first mounting base 4 more stable. The connecting plate 402 enables a stable connection with the telescopic end of the telescopic drive component. Since the connecting plate 402 is perpendicular to the base plate 401 in this application, a triangular support plate 403 is added between the connecting plate 402 and the base plate 401 to support the connecting plate 402, ensuring the stability of the connecting plate 402 and preventing the connection between the connecting plate 402 and the base plate 401 from breaking.

[0047] Optionally, such as Figure 3 As shown, the harvester ladder provided by this utility model also includes a connecting member 6 and a positioning member. The connecting member 6 is U-shaped, forming a docking space. The connecting plate 402 enters the docking space. The connecting member 6 has an alignment hole. The positioning member passes through the alignment hole and the connecting hole, so that the connecting member 6 and the connecting plate 402 are rotatably connected.

[0048] The positioning element in this application can be a bolt, pin, or rivet. Since the connecting member 6 in this application is U-shaped, the connecting plate 402 can be inserted into the mating space. Furthermore, since the connecting member 6 has a positioning hole, the positioning element has a connecting hole corresponding to the positioning hole. Therefore, by passing the positioning element through the positioning hole and the connecting hole, a rotational connection between the telescopic drive member and the first mounting base 4 can be achieved.

[0049] Optionally, such as Figure 1 Combination Figure 2As shown, the ladder assembly 7 in this application includes a rotating frame 701, a ladder frame 702, and a plurality of steps 703; the rotating frame 701 is triangular, and the first vertex of the rotating frame 701 forms a mating sleeve, and the first mounting base 4 is fixedly disposed on the side wall of the rotating frame 701; one end of the ladder frame 702 is connected to the rotating frame 701, and the ladder frame 702 includes two parallel first mounting beams and second mounting beams, and the two ends of the plurality of steps 703 are respectively connected to the first mounting beams and the second mounting beams, and the plurality of steps 703 are spaced apart along the length direction of the first mounting beams and the second mounting beams.

[0050] By arranging the rotating frame 701 in a triangular shape, the overall ladder assembly 7 can have rotatable space, while also providing a spatial basis for the installation of the drive assembly. Accordingly, the ladder frame 702 in this application can provide a connection base for multiple steps 703, thereby forming a structure that enables workers to climb.

[0051] Optionally, the harvester ladder provided by this utility model further includes a top plate 8 and a limiting mechanism; the top plate 8 is located above the ladder assembly 7, and the limiting mechanism includes a first limiting member and a second limiting member. The first limiting member is set at the extreme position of the top plate 8 corresponding to the retraction of the electric telescopic rod 3, and a first mating member is formed on the first mounting beam corresponding to the position of the first limiting member. The second limiting member is set at the extreme position of the top plate 8 corresponding to the extension of the electric telescopic rod 3, and a second mating member is formed on the second mounting beam corresponding to the position of the second limiting member. The first mating member is detachably connected to the first limiting member, and the second mating member is detachably connected to the second limiting member.

[0052] Since the ladder assembly 7 in this application has only two positions—the working position where the ladder assembly 7 reaches the side of the harvester when the drive assembly is extended and the retracted position where the ladder assembly 7 reaches the tail of the harvester when the drive assembly is retracted—this application further provides a first limiting member and a second limiting member under the top plate 8, and provides a first mating member on the ladder assembly 7 that corresponds to and is detachably connected to the first limiting member, and a second mating member that corresponds to and is detachably connected to the second limiting member. This allows the ladder assembly 7 to be limited in both positions, ensuring that the ladder assembly 7 can be stably maintained in the corresponding position, avoiding shaking or swaying during operation or retraction, and ensuring the positional stability of the overall structure.

[0053] In this application, both the first and second limiting members can be limiting ear plates. Correspondingly, the first and second mating members are mating ear plates. The limiting ear plates and the mating ear plates can fit together. By opening positioning holes on the limiting ear plates and the mating ear plates and inserting connecting pins into the positioning holes, the connection between the first limiting member and the first mating member, as well as between the second limiting member and the second mating member, can be achieved. This, in turn, cooperates with the self-locking mechanism of the extension or retraction of the electric telescopic rod 3 to ensure the stability of the ladder assembly 7.

[0054] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0055] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A harvester ladder, characterized in that, Including the ladder assembly, drive assembly, and positioning assembly; One end of the drive assembly is rotatably connected to the positioning assembly, and the other end is rotatably connected to the side of the ladder assembly; The ladder assembly has a docking part, the positioning assembly has a positioning part, and the docking part and the positioning part are rotatably connected; The drive assembly includes a telescopic drive component, the extension and retraction of which can drive the ladder assembly to rotate relative to the positioning assembly.

2. The harvester ladder according to claim 1, characterized in that, The positioning part is a rotating shaft, which is rotatably connected to the positioning assembly. The docking part is a docking sleeve, which is fitted onto the rotating shaft and is fixedly connected to the rotating shaft.

3. The harvester ladder according to claim 2, characterized in that, The side wall of the ladder assembly is provided with a first mounting seat, and the telescopic end of the telescopic drive component is rotatably connected to the first mounting seat.

4. The harvester ladder according to claim 3, characterized in that, The telescopic drive component includes a drive motor and an electric telescopic rod. The output end of the drive motor is connected to the electric telescopic rod, and the telescopic end of the electric telescopic rod is rotatably connected to the first mounting base.

5. The harvester ladder according to claim 4, characterized in that, It also includes a second mounting base, which is fixedly mounted on the positioning assembly, and the drive motor is rotatably connected to the second mounting base.

6. The harvester ladder according to claim 5, characterized in that, The first mounting base includes a base plate, a connecting plate, and a support plate; The base plate is attached to the side wall of the ladder assembly and is fixedly installed on the side wall of the ladder assembly; The connecting plate is set perpendicular to the base plate, and a connecting hole is formed on the connecting plate. The telescopic end of the electric telescopic rod is rotatably connected to the connecting hole. The support plate is triangular, with its first right-angled side closely fitted to the base plate and fixedly connected to it, and its second right-angled side closely fitted to the connecting plate and fixedly connected to it.

7. The harvester ladder according to claim 6, characterized in that, It also includes a connecting member and a positioning member. The connecting member is U-shaped and forms a docking space. The connecting plate enters the docking space. The connecting member has an alignment hole. The positioning member passes through the alignment hole and the connecting hole, so that the connecting member is rotatably connected to the connecting plate.

8. The harvester ladder according to claim 4, characterized in that, The ladder assembly includes a rotating frame, a ladder frame, and multiple steps; The rotating frame is triangular, and the first vertex of the rotating frame forms the docking sleeve. The first mounting base is fixedly disposed on the side wall of the rotating frame. One end of the climbing frame is connected to the rotating frame. The climbing frame includes two parallel first mounting beams and a second mounting beam. The two ends of a plurality of pedals are respectively connected to the first mounting beam and the second mounting beam, and the plurality of pedals are spaced apart along the length direction of the first mounting beam and the second mounting beam.

9. The harvester ladder according to claim 8, characterized in that, It also includes the top plate and the limiting mechanism; The top plate is located above the ladder assembly. The limiting mechanism includes a first limiting member and a second limiting member. The first limiting member is located at the extreme position of the top plate corresponding to the retracted position of the electric telescopic rod, and a first mating member is formed on the first mounting beam corresponding to the position of the first limiting member. The second limiting member is located at the extreme position of the top plate corresponding to the extended position of the electric telescopic rod, and a second mating member is formed on the second mounting beam corresponding to the position of the second limiting member. The first mating member is detachably connected to the first limiting member, and the second mating member is detachably connected to the second limiting member.

10. A harvester, characterized in that, The harvester ladder includes any one of claims 1-9 above.

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