Lifting structure of lifting device

Abstract

The utility model relates to the technical field of agricultural machinery, in particular to a lifting structure of a lifting device, which comprises a first flexible chain, a swinging pulley assembly and a driving assembly, the swinging pulley assembly comprises a first pulley, and the swinging pulley assembly is used for being rotatably connected with a rack to change the angle between the first pulley and the rack; one end of the first flexible chain is used for being connected with the lifting device, the other end of the first flexible chain bypasses the first pulley to be connected with the output end of the driving assembly, and the driving assembly is used for changing the length of the first flexible chain between the first pulley and the lifting device so as to drive the lifting device to move up and down relative to the rack. The pulling-up structure of the hoisting device is simple in structure and low in cost, free pulling-up and falling of the hoisting device can be achieved, and the hoisting device is more convenient to use.

Description

Technical Field

[0001] The present application relates to the technical field of agricultural machinery, and in particular to a lifting structure of a lifting device. Background Art

[0002] With the improvement of agricultural mechanization, agricultural machinery and equipment are used more and more widely. Most agricultural machinery and equipment involve the lifting of products, such as agricultural machinery and equipment used for crop harvesting. Take corn harvesters as an example. Corn harvesters generally have a lifting device and a granary. The lifting device is used to transport the cleaned corn to the granary for storage. During transportation, the end of the lifting device needs to extend above the granary. When unloading grain, the lifting device needs to be lifted up to avoid blocking the moving granary. Therefore, the lifting of the lifting device is very important.

[0003] Patent publication number CN114271088A discloses an articulated steering fresh corn combine harvester, which has a zipper, one end of which is connected to the fan frame of the harvester, and the other end is connected to the collection box elevator (elevating device). By giving the zipper a certain length, the position of the collection box elevator can be limited.

[0004] Although the above patent adds a zipper to limit the lifting device, it is still impossible to achieve free lifting and lowering of the lifting device. Utility Model Content

[0005] The present application provides a lifting structure of a lifting device to solve the problem that it is difficult to freely lift and lower the lifting device.

[0006] In order to solve the above problems, this application adopts the following technical solutions:

[0007] The present application provides a lifting structure of a lifting device, which is used to connect the frame of agricultural machinery and the lifting device to adjust the height of the lifting device relative to the frame. The lifting structure includes a first flexible chain, a swing pulley assembly and a driving assembly. The swing pulley assembly includes a first pulley, and the swing pulley assembly is used to be rotatably connected to the frame to change the angle between the first pulley and the frame. One end of the first flexible chain is used to be connected to the lifting device, and the other end bypasses the first pulley and is connected to the output end of the driving assembly. The driving assembly is used to change the length of the first flexible chain between the first pulley and the lifting device to drive the lifting device to move up and down relative to the frame.

[0008] In some possible designs, the swing pulley assembly further includes a pulley bracket and a first connecting pin, the first pulley is rotatably connected to the pulley bracket via the first connecting pin, and the pulley bracket is used to be rotatably connected to the frame.

[0009] In some possible designs, the pulley bracket includes a first support plate and a second support plate arranged opposite to each other, and a third support plate connected to one end of the first support plate and the second support plate respectively, the third support plate is used to be rotatably connected to the frame, and the first pulley is located between the first support plate and the second support plate.

[0010] In some possible designs, a fixed pulley assembly is further included, which is used to be installed on the frame. The fixed pulley assembly includes at least one second pulley, and the second pulley is located between the first pulley and the driving assembly. One end of the first flexible chain is connected to the output end of the driving assembly, and the other end bypasses the second pulley and the first pulley in sequence to be connected to the lifting device.

[0011] In some possible designs, the fixed pulley assembly further includes a baffle, and the first flexible chain is located between the second pulley and the baffle.

[0012] In some possible designs, a second flexible chain is further included, and the second flexible chain is used to connect the frame and the lifting device.

[0013] In some possible designs, the swing pulley assembly also includes a second connecting pin, the two ends of which are respectively connected to the second support plate and the third support plate, and the second connecting pin is located on the side of the first pulley away from the third support plate, and the second flexible chain is used to connect the second connecting pin and the lifting device.

[0014] In some possible designs, one end of the second flexible chain is used to connect to the lifting device, and the other end is used to bypass the second connecting pin and connect to the lifting device.

[0015] In some possible designs, the first flexible chain and the second flexible chain are steel wire ropes or iron chains.

[0016] In some possible designs, the driving assembly is a hydraulic cylinder, a pneumatic cylinder or an electric push rod.

[0017] Beneficial effects of this application:

[0018] The lifting structure of the lifting device provided by the present application connects the frame and the lifting device of the agricultural machinery equipment by setting a first flexible chain, a swing pulley assembly and a driving assembly, so that the end of the lifting device can rise or fall freely relative to the frame, thereby preventing the lifting device from affecting the movement of the granary. Specifically, the swing pulley assembly includes a first pulley, one end of the first flexible chain is connected to the driving assembly, and the other end bypasses the first pulley and is connected to the lifting device. The driving assembly is used to pull the first flexible chain, thereby changing the length of the first flexible chain between the first pulley and the lifting device, so that the lifting device moves up and down relative to the frame, and the swing pulley assembly is rotatably connected to the frame, that is, the angle between the first pulley and the frame is variable, so that when the lifting device is at different heights, the inclination angle of the first pulley can be adaptively changed to guide the first flexible chain, so that the present application can achieve rapid lifting and lowering of the lifting device through a simple structure, thereby improving the convenience of using agricultural machinery equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application and, together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A top view of the lifting structure of the lifting device provided in an embodiment of the present application;

[0021] Figure 2 for Figure 1 A side view of the lifting structure of the lifting device in FIG.

[0022] Figure 3 for Figure 1 A front view of the lifting structure of the lifting device in FIG.

[0023] Figure 4 for Figure 1 A schematic diagram of the structure of the swing pulley assembly;

[0024] Figure 5 for Figure 1 Schematic diagram of the connection structure between the fixed pulley assembly and the frame.

[0025] Description of reference numerals:

[0026] 100-rack;

[0027] 200-first flexible chain;

[0028] 300-swing pulley assembly; 310-first support plate; 320-second support plate; 330-third support plate; 340-first connecting pin; 350-first pulley; 360-second connecting pin;

[0029] 400-fixed pulley assembly; 410-second pulley; 420-baffle;

[0030] 500-second flexible chain;

[0031] 600-Drive assembly.

[0032] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0033] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0034] Secondly, it should be noted that in the description of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0035] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0036] Agricultural machinery and equipment, especially equipment used for harvesting crops, generally need to transport the harvested crops to the granary through a lifting device. After storing a certain amount of crops in the granary, the granary needs to be moved to unload the grain. At this time, the lifting device will affect the movement of the granary, so it is generally necessary to lift this end of the lifting device.

[0037] At present, the lifting device generally only limits its minimum height, and lifting requires the help of manpower or external equipment, which is extremely inconvenient to use.

[0038] As mentioned in the background technology, the articulated steering fresh corn combine harvester in the patent can only limit the minimum height of the lifting device, but cannot achieve the lifting and lowering of the lifting device near the granary end. The patent mainly adds a zipper connecting the header elevator (lifting device) and the fan frame on the fan frame for installing the rear fan, that is, the zipper connects the rear output end of the header elevator and the fan frame, and limits the minimum height of the rear output end of the header elevator through the zipper.

[0039] In order to avoid the above-mentioned problems, the present application provides a lifting structure of a lifting device, which can realize the lifting and lowering of the lifting device relative to the agricultural machinery equipment through a driving assembly, a swing pulley assembly and a first flexible chain. It is not only simple in structure but also extremely convenient to use.

[0040] The present application is described in detail below with reference to the accompanying drawings and specific embodiments:

[0041] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment provides a lifting structure of a lifting device, which is mainly used on agricultural machinery and equipment, wherein the agricultural machinery and equipment applicable to this embodiment at least includes a lifting device (not shown in the figure) and a frame 100, wherein the frame 100 here can be the above-mentioned fan frame 100, or other brackets of agricultural machinery and equipment, as long as it can bear the weight of the lifting device and the position is adapted to the lifting device, and one end of the lifting device is hinged with the bracket of the agricultural machinery and equipment for installing the lifting device, and the other end is a movable end, which can be extended to the top of the grain bin of the agricultural machinery and equipment for receiving crops, so as to transport the crops into the grain bin. The lifting structure of the lifting device of this embodiment includes a first flexible chain 200, a swing pulley assembly 300 and a drive assembly 600.

[0042] The swing pulley assembly 300 includes a first pulley 350, and the swing pulley assembly 300 is used to be rotatably connected to the frame 100 so that the relative angle between the first pulley 350 and the frame 100 can be adjusted. One end of the first flexible chain 200 is used to be connected to the movable end of the lifting device, and the other end bypasses the first pulley 350 and is connected to the output end of the driving assembly 600, that is, the first pulley 350 can guide the first flexible chain 200 so that the extension direction of the first flexible chain 200 after bypassing the first pulley 350 is always adapted to the lifting device. The driving assembly 600 is used to change the length of the first flexible chain 200 between the first pulley 350 and the lifting device to drive the lifting device to move up and down relative to the frame 100, thereby realizing the free lifting and lowering of the lifting device.

[0043] It is understandable that the first flexible chain 200 can be a steel wire rope, an iron chain or other flexible chains with corresponding load-bearing capacity, as long as it can pull the lifting device, and this embodiment does not limit this.

[0044] The driving assembly 600 can be a hydraulic cylinder, a telescopic cylinder, an electric push rod, or a combination of a motor and a winding shaft, so that one end of the first flexible chain 200 is fixedly connected to the winding shaft, and the output shaft of the motor is connected to the rotating shaft of the winding shaft to drive the winding shaft to rotate, so that the length of the first flexible chain 200 between the first pulley 350 and the lifting device can be adjusted by the forward and reverse rotation of the motor. That is, as long as the driving assembly 600 can pull the first flexible chain 200, the length of the first flexible chain 200 between the first pulley 350 and the lifting device changes accordingly, and this embodiment does not limit it here.

[0045] Specifically, one end of the first flexible chain 200 is connected to the driving assembly 600, and the other end bypasses the first pulley 350 and is connected to the lifting device. When it is necessary to change the height of the lifting device connected to one end of the first flexible chain 200, the driving assembly 600 pulls the first flexible chain 200, thereby changing the length of the first flexible chain 200 between the first pulley 350 and the lifting device, so that this end of the lifting device moves up and down relative to the frame 100, and the swing pulley assembly 300 is rotatably connected to the frame 100, that is, the angle between the first pulley 350 and the frame 100 is variable, so that when the lifting device is at different heights, the inclination angle of the first pulley 350 can be adaptively changed to guide the first flexible chain 200, so that the present application can achieve rapid lifting and lowering of the lifting device through a simple structure, thereby improving the convenience of using agricultural machinery and equipment.

[0046] For some possible implementations, see Figure 3 and Figure 4As shown, the swing pulley assembly 300 also includes a pulley bracket and a first connecting pin 340, and the first pulley 350 is rotatably connected to the pulley bracket through the first connecting pin 340, that is, a hole is opened on the pulley bracket, and a corresponding hole is opened on the first pulley 350, and the first connecting pin 340 passes through the hole on the pulley bracket to connect with the pulley bracket, and passes through the middle hole of the first pulley 350 to connect with the first pulley 350, so that the first pulley 350 is installed on the pulley bracket, and the first pulley 350 can rotate 360° around the first connecting pin 340, and the pulley bracket is used to be rotatably connected to the frame 100, so that the relative angle between the pulley bracket and the first pulley 350 installed on the pulley bracket and the frame 100 can be changed.

[0047] It is understandable that the pulley bracket and the frame 100 can be connected by common means such as hinge connection and pin connection, as long as the movable end of the pulley bracket can rotate freely around the connection point between it and the frame 100, and this embodiment does not limit it.

[0048] Furthermore, the pulley bracket includes a first support plate 310, a second support plate 320 and a third support plate 330, wherein one end of the third support plate 330 is connected to one end of the first support plate 310, and the other end of the third support plate 330 is connected to one end of the second support plate 320, and the first support plate 310 and the second support plate 320 are arranged opposite to each other to form an installation groove for installing the first pulley 350 between the first support plate 310, the second support plate 320 and the third support plate 330, and the third support plate 330 is used to be rotatably connected to the frame 100 to realize the connection between the swing pulley assembly 300 and the frame 100.

[0049] Specifically, a first mounting hole can be opened at a position corresponding to the first support plate 310 and the second support plate 320, and a second mounting hole can be opened in the middle of the first pulley 350. The first pulley 350 is placed between the first support plate 310 and the second support plate 320, and the first mounting hole is opposite to the second mounting hole. Then, the first connecting pin 340 is inserted so that the two ends of the first connecting pin 340 extend to the outside of the first support plate 310 and the second support plate 320 respectively, and the first pulley 350 can be rotatably connected with the first support plate 310 and the second support plate 320 by tightening the nut.

[0050] It is understandable that the first support plate 310 , the second support plate 320 and the third support plate 330 may be formed as one piece, or may be separately provided, and may be assembled later by welding, bolt connection, or the like.

[0051] With such an arrangement, when the first flexible chain 200 is wound around the outside of the first pulley 350, the first flexible chain 200 passes between the first pulley 350 and the third support plate 330. The position of the first flexible chain 200 can be restricted by the third support plate 330 to prevent the first flexible chain 200 from detaching from the first pulley 350.

[0052] For some possible implementations, see Figure 5 and Figure 3 As shown, the lifting structure of the lifting device of this embodiment also includes a fixed pulley assembly 400, which is installed on the frame 100. The fixed pulley assembly 400 includes at least one second pulley 410, that is, it can be understood that for each second pulley 410, the rotating shaft for installing the second pulley 410 is fixedly connected to the frame 100, and the rotating shaft passes through the middle of the second pulley 410, and the second pulley 410 can rotate 360° around the rotating shaft.

[0053] Among them, the second pulley 410 is located between the first pulley 350 and the driving assembly 600, and is used to guide the first flexible chain 200. At this time, one end of the first flexible chain 200 is connected to the output end of the driving assembly 600, and the other end bypasses the second pulley 410 and the first pulley 350 in turn to be connected to the lifting device.

[0054] It can be understood that the number of the second pulleys 410 can be set according to actual conditions. The function of the second pulley 410 is mainly to guide the first flexible chain 200, that is, the number of the second pulleys 410 can smoothly convert the direction of the first flexible chain 200 so that it can connect the drive assembly 600 and the first pulley 350.

[0055] For example, Figure 3 and Figure 5 As shown, the driving assembly 600 is a hydraulic cylinder. It can be understood that the use of a hydraulic cylinder as the driving assembly 600 is relatively simple to install and has a relatively low cost of use. Therefore, this embodiment is described by taking a hydraulic cylinder as an example. In order to effectively utilize the space, the swing pulley assembly 300 is arranged at the top of the frame 100, the driving assembly 600 is arranged at the bottom of the frame 100, and the fixed pulley assembly 400 is arranged on one side of the frame 100, and the fixed pulley assembly 400 includes two second pulleys 410, which are used to guide the first flexible chain 200 extending from the driving assembly 600 to the top of the frame 100, and bypass the first pulley 350 located at the top of the frame 100 to connect with the lifting device.

[0056] It can be understood that the installation method of the drive assembly 600, the fixed pulley assembly 400 and the swing pulley assembly 300 on the frame 100 is only illustrated here. In actual applications, the installation positions of the fixed pulley assembly 400, the drive assembly 600 and the swing pulley assembly 300 can be adaptively adjusted according to the structure of the frame 100, the position of the lifting device, and other components on the frame 100, and this embodiment does not limit it.

[0057] In addition, when the frame 100 is sufficient to support the first flexible chain 200 to directly connect the driving assembly 600 and the first pulley 350, the fixed pulley assembly 400 may not be provided.

[0058] In some possible embodiments, the fixed pulley assembly 400 further includes a baffle 420, and the first flexible chain 200 is located between the second pulley 410 and the baffle 420. The baffle 420 limits the position of the first flexible chain 200 to prevent the first flexible chain 200 from separating from the second pulley 410.

[0059] For example, Figure 5 As shown, when the fixed pulley assembly 400 includes two second pulleys 410 arranged side by side on one side of the frame 100, the baffle 420 can be set to a corresponding shape so that it covers the side of the two second pulleys 410 away from the frame 100, so as to limit the first flexible chain 200 between the second pulley 410 and the baffle 420.

[0060] It is understandable that a baffle 420 may be provided for each second pulley 410 , and the shape and structure are not limited as long as the position of the first flexible chain 200 can be restricted.

[0061] In some possible implementations, the lifting structure of the lifting device of this embodiment further includes a second flexible chain 500, and the second flexible chain 500 is used to connect the frame 100 and the lifting device.

[0062] It is understandable that the second flexible chain 500 is similar to the first flexible chain 200 and can be a steel wire rope, an iron chain or other flexible chain with corresponding load-bearing capacity that can bear the weight of the lifting device. This embodiment does not limit this.

[0063] After adding the second flexible chain 500, the minimum height of the lifting device can be restricted by limiting the length of the second flexible chain 500, so as to prevent the height of the lifting device from being too low and affecting other components of the agricultural machinery and equipment.

[0064] At the same time, the second flexible chain 500 can also play a role in safety protection. When the first flexible chain 200 fails, it can prevent the movable end of the lifting device from falling directly.

[0065] For example, one end of the second flexible chain 500 may be directly fixed to the frame 100 , and the other end may be connected to the lifting device.

[0066] In some possible implementations, in order to facilitate installation, the second flexible chain 500 can be connected to the swing pulley assembly 300 at one end and to the lifting device at the other end. In this way, the second flexible chain 500 and the swing pulley assembly 300 can be connected in advance, and only the swing pulley assembly 300 needs to be connected to the frame 100. In addition, such a setting can also make the connection position of the second flexible chain 500 more compatible with the position of the lifting device.

[0067] Furthermore, the swing pulley assembly 300 also includes a second connecting pin 360, and both ends of the second connecting pin 360 are respectively connected to the first bracket and the second bracket. The first pulley 350 is located between the third bracket and the second connecting pin 360, and the second flexible chain 500 is directly connected to the second connecting pin 360. In this installation method, the second flexible chain 500 will not affect the normal use of the first flexible chain 200.

[0068] In order to improve the bearing strength of the second flexible chain 500 , both ends of the second flexible chain 500 may be connected to the lifting device, and the second flexible chain 500 may be wound around the second connecting pin 360 .

[0069] Those skilled in the art will easily conceive of other implementations of the present application after considering the specification and practicing the technical solutions disclosed herein.

[0070] This application is intended to cover any modifications, uses or adaptive changes of the present application, which follow the general principles of the present application and include common knowledge or customary technical means in the technical field that are not disclosed in this application.

[0071] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A lifting structure of a lifting device, used for connecting a frame (100) of agricultural machinery and a lifting device to adjust the height of the lifting device relative to the frame (100), characterized in that: The lifting structure comprises a first flexible chain (200), a swing pulley assembly (300) and a driving assembly (600); the swing pulley assembly (300) comprises a first pulley (350), and the swing pulley assembly (300) is used to be rotatably connected to the frame (100) to change the angle between the first pulley (350) and the frame (100); one end of the first flexible chain (200) is used to be connected to the lifting device, and the other end bypasses the first pulley (350) and is connected to the output end of the driving assembly (600); the driving assembly (600) is used to change the length of the first flexible chain (200) between the first pulley (350) and the lifting device to drive the lifting device to move up and down relative to the frame (100).

2. The lifting structure of the lifting device according to claim 1 is characterized in that: The swing pulley assembly (300) further comprises a pulley bracket and a first connecting pin (340); the first pulley (350) is rotatably connected to the pulley bracket via the first connecting pin (340); and the pulley bracket is used to be rotatably connected to the frame (100).

3. The lifting structure of the lifting device according to claim 2 is characterized in that: The pulley bracket comprises a first support plate (310) and a second support plate (320) which are arranged opposite to each other, and a third support plate (330) which is respectively connected to one end of the first support plate (310) and the second support plate (320), wherein the third support plate (330) is used for being rotatably connected to the frame (100), and the first pulley (350) is located between the first support plate (310) and the second support plate (320).

4. The lifting structure of the lifting device according to claim 3 is characterized in that: It also includes a fixed pulley assembly (400), which is used to be installed on the frame (100), and the fixed pulley assembly (400) includes at least one second pulley (410), and the second pulley (410) is located between the first pulley (350) and the driving assembly (600), and one end of the first flexible chain (200) is connected to the output end of the driving assembly (600), and the other end of the first flexible chain (200) is connected to the lifting device by bypassing the second pulley (410) and the first pulley (350) in sequence.

5. The lifting structure of the lifting device according to claim 4 is characterized in that: The fixed pulley assembly (400) further comprises a baffle (420), and the first flexible chain (200) is located between the second pulley (410) and the baffle (420).

6. The lifting structure of the lifting device according to any one of claims 3 to 5, characterized in that: It also includes a second flexible chain (500), wherein the second flexible chain (500) is used to connect the frame (100) and the lifting device.

7. The lifting structure of the lifting device according to claim 6, characterized in that: The swing pulley assembly (300) further comprises a second connecting pin (360), the two ends of the second connecting pin (360) being respectively connected to the second support plate (320) and the third support plate (330), and the second connecting pin (360) is located on the side of the first pulley (350) away from the third support plate (330), and the second flexible chain (500) is used to connect the second connecting pin (360) and the lifting device.

8. The lifting structure of the lifting device according to claim 7, characterized in that: One end of the second flexible chain (500) is used to be connected to the lifting device, and the other end is used to bypass the second connecting pin (360) and be connected to the lifting device.

9. The lifting structure of the lifting device according to claim 6, characterized in that: The first flexible chain (200) and the second flexible chain (500) are steel wire ropes or iron chains.

10. The lifting structure of the lifting device according to any one of claims 3 to 5, characterized in that: The driving component (600) is a hydraulic cylinder, a gas cylinder or an electric push rod.

Images