A hydraulic lifting transmission device

Abstract

The present invention relates to agricultural machinery, in particular to a hydraulic lifting transmission device. The device comprises a lifting mechanism and a transmission mechanism, wherein the lifting mechanism is connected to the transmission mechanism; the lifting mechanism comprises a frame, a movable frame, a movable rod, a hydraulic cylinder, a movable pulley and a flexible rope, wherein the movable frame is slidably connected to the upper part of the frame, the hydraulic cylinder is located below the movable frame, the hydraulic cylinder is arranged on the frame, the hydraulic cylinder pushes the movable frame to move up and down, a movable rod is fixed on the upper surface of the movable frame, movable pulleys are arranged at both ends of the movable rod, flexible ropes are respectively wound on the movable pulleys, one end of the flexible rope is fixedly connected to the middle part of the frame, and the other end of the flexible rope passes around the movable pulley and is connected to the transmission mechanism. While realizing the adjustment of the height of the garlic harvester, the device also has the function of transmitting power, and at the same time, the tension in the transmission chain is kept constant, thereby ensuring the overall transmission of the garlic harvester.

Description

Technical Field

[0001] The invention relates to agricultural machinery, in particular to a hydraulic lifting transmission device. Background Art

[0002] Garlic is a food, medicine and health product with high economic benefits. It is one of the important economic crops for sustainable development in rural areas of my country. The area of ​​garlic cultivation in my country is about 3.35×10 4 hm 2 , accounting for about 1 / 3 of the world's total planting area. In recent years, my country's garlic planting area will continue to increase, increasing at a rate of about 3%-5% per year. With the development of the garlic industry, my country's mechanized harvesting technology for garlic has also made great progress, and a basic garlic harvesting mechanization technology system has been formed, and my country's mechanized harvesting of garlic has achieved great development.

[0003] At present, when the garlic harvester is working in the field, in order to protect the digging device and facilitate the walking of the tractor, the digging part of the garlic harvester must be separated from the ground so that the whole machine is in the highest position; when harvesting garlic, the whole machine must be close to the ground to ensure that the digging part of the garlic harvester has a certain depth of burial in the soil before the garlic can be dug out. Therefore, according to the operation requirements of the above-mentioned garlic harvester, a matching device can be used to realize the automatic lifting and lowering of the garlic harvest and can also transmit power. Although the traditional hydraulic lifting device is widely used due to its stable lifting, safety and reliability, and simple operation, it still has the following defects: first, the existing lifting device cannot transmit the garlic harvester after raising it to the highest position, resulting in the garlic harvester being unable to work; second, when the garlic harvester adopts a matching chain transmission, due to the above-mentioned whole machine height position change requirements, it will affect the tension of the transmission chain to be too loose or too tight, if it is too loose, the transmission chain will shake, jump teeth, derailment and other phenomena will occur, if it is too tight, the transmission chain will be tightened or broken, and the transmission of the whole machine of the garlic harvester will be seriously affected. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned defects of the prior art and propose a hydraulic lifting transmission device, which can not only adjust the height of the garlic harvester, but also transmit power and keep the tension in the transmission chain constant, thereby ensuring the overall transmission of the garlic harvester.

[0005] The technical solution of the present invention is: a hydraulic lifting transmission device, which includes a lifting mechanism and a transmission mechanism, and the lifting mechanism is connected to the transmission mechanism;

[0006] The lifting mechanism comprises a frame, a movable frame, a movable rod, a hydraulic cylinder, a movable pulley and a flexible rope. The movable frame is slidably connected to the upper part of the frame. The hydraulic cylinder is located below the movable frame. The hydraulic cylinder is arranged on the frame. The hydraulic cylinder pushes the movable frame to move up and down. A movable rod is fixed on the upper surface of the movable frame. Both ends of the movable rod are respectively provided with movable pulleys. Flexible ropes are respectively wound around the movable pulleys. One end of the flexible rope is fixedly connected to the middle part of the frame. The other end of the flexible rope passes around the movable pulley and is connected to the transmission mechanism.

[0007] The transmission mechanism includes a driven frame, a driving shaft, a driven shaft, a driving sprocket, a driven sprocket, a tensioning wheel and a triangular transmission chain, the driving shaft is arranged on the frame, the driven shaft is arranged on the driven frame, a driving sprocket is arranged at the end of the driving shaft, a driven sprocket is arranged at the end of the driven shaft, a swing rod is connected between the side surfaces of the frame and the driven frame, one end of the swing rod is hinged to the middle part of the frame, the other end of the swing rod is connected to the driven frame through a tensioning spring, a tensioning wheel is arranged on the swing rod, the driving sprocket, the driven sprocket and the tensioning wheel are located on the same side of the frame, and a triangle is formed between the driving sprocket, the driven sprocket and the tensioning wheel, and the triangular transmission chain is sleeved on the outer sides of the driving sprocket, the driven sprocket and the tensioning wheel.

[0008] In the present invention, the frame is in the shape of a frame arranged in a vertical direction, including two vertical guide columns, and vertical slide grooves are respectively provided on the opposite surfaces of the two guide columns. The movable frame is located between the two guide columns on the upper part of the frame, and the two ends of the movable frame are respectively arranged in the slide grooves of the guide columns, and the movable frame slides up and down along the slide grooves.

[0009] The driving shaft is located above the driven shaft, the swing rod is arranged in an inclined manner, and one end of the swing rod connected to the frame is higher than one end of the swing rod connected to the driven frame.

[0010] A driving wheel is fixed at the middle of the driving shaft, and a driven wheel is fixed at the middle of the driven shaft.

[0011] The beneficial effects of the present invention are:

[0012] (1) The present application adopts a structure in which a lifting mechanism and a transmission mechanism are connected, which can not only be used to adjust the position height of the working machine, but also realize the transmission of power to meet the working requirements of the supporting working machine at different heights;

[0013] (2) The lifting mechanism uses a hydraulic cylinder piston rod to adjust the height, which not only makes the entire device rise and fall smoothly, but also has a large load-bearing capacity;

[0014] (3) The transmission mechanism adopts a triangular transmission chain to transmit power, which makes the adjustment range large and can be used with large and medium-sized operating machinery;

[0015] (4) During the lifting process, the tensioning degree of the triangular transmission chain is adjusted in real time through the tensioning spring and the tensioning wheel, so that the tensioning degree in the triangular transmission chain remains constant, ensuring the overall transmission of the garlic harvester. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0017] Figure 2 It is a left-side structural schematic diagram of the present invention.

[0018] In the figure: 1 driven wheel; 2 tension spring; 3 triangular transmission chain; 4 movable frame; 5 movable rod; 6 flexible rope; 7 hydraulic cylinder; 8 frame; 9 driven frame; 10 driving shaft; 11 driven shaft; 12 driving wheel; 13 driving sprocket; 14 swing rod; 15 movable pulley; 16 tension wheel; 17 driven sprocket. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0020] In the following description, specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in a variety of other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] like Figure 1 and Figure 2 As shown, a hydraulic lifting transmission device described in the present invention includes a lifting mechanism and a transmission mechanism, and the lifting mechanism is connected to the transmission mechanism. The lifting mechanism includes a frame 8, a movable frame 4, a movable rod 5, a hydraulic cylinder 7, a movable pulley 15 and a flexible rope 6. The frame 8 is in the shape of a frame arranged in a vertical direction, including two vertical guide columns, and vertical slide grooves are respectively arranged on the opposite surfaces of the two guide columns. The movable frame 4 is located between the two guide columns on the upper part of the frame 8, and the two ends of the movable frame 4 are respectively arranged in the slide grooves of the guide columns, and the movable frame 4 can slide up and down along the slide grooves. The hydraulic cylinder 7 is located below the movable frame 4, and the hydraulic cylinder 7 is arranged on the frame 8. The hydraulic cylinder 7 can push the movable frame 4 to move up and down. The top end of the piston rod of the hydraulic cylinder 7 is connected to the movable frame 4, and the bottom of the cylinder body of the hydraulic cylinder 7 is fixed to the middle of the frame 8. During the operation of the hydraulic cylinder 7, the lifting and lowering of the movable frame 4 is realized.

[0022] A movable rod 5 is fixed on the upper surface of the movable frame 4, and the movable rod 5 can be raised and lowered with the movable frame 4. Movable pulleys 15 are respectively arranged at both ends of the movable rod 5, and flexible cables 6 are respectively wound on the movable pulleys 15. One end of the flexible cable 6 is fixedly connected to the middle part of the frame 8, and the other end of the flexible cable 6 passes through the movable pulley 15 and is connected to the transmission mechanism. When the piston rod of the hydraulic cylinder 7 rises, the movable frame 4 rises. At this time, the movable rod 5 drives the movable pulley 15 to rise. Under the action of the lever principle, the flexible cable 6 pulls the transmission mechanism to rise, thereby realizing the rising function of the device. When the piston rod of the hydraulic cylinder 7 descends, the movable frame 4 descends under the action of gravity, and the movable pulley 15 descends with the movable rod 5, so that the support point supporting the flexible cable descends. Under the action of the lever principle, one end of the flexible cable connected to the transmission mechanism descends, thereby realizing the descending function of the entire device.

[0023] The transmission mechanism includes a driven frame 9, a driving shaft 10, a driven shaft 11, a driving sprocket 13, a driven sprocket 17, a tensioning wheel 16 and a triangular transmission chain 3. The driving shaft 10 is arranged on the frame 8, and the driven shaft 11 is arranged on the driven frame 9. The driving shaft 10 is located above the driven shaft 11. A driving wheel 12 and a driving sprocket 13 are fixed on the driving shaft 10, wherein the driving sprocket 13 is fixed to the end of the driving shaft 10. The driven shaft 11 and the driven sprocket 17 are fixed to the end of the driven shaft 11. A swing rod 14 is connected between the sides of the frame 8 and the driven frame 9. The swing rod 14 is arranged in an inclined manner, and the end of the swing rod 14 connected to the frame 8 is higher than the end of the swing rod 14 connected to the driven frame 9. One end of the swing rod 14 is hinged to the middle of the frame 8, and the other end of the swing rod 14 is connected to the driven frame 9 through the tension spring 2. A tension wheel 16 is provided in the middle of the swing rod 14. The driving sprocket 13, the driven sprocket 17 and the tension wheel 16 are located on the same side of the frame 8, and a triangle is formed between the driving sprocket 13, the driven sprocket 17 and the tension wheel 16. The triangular transmission chain 3 is sleeved on the outer side of the driving sprocket 13, the driven sprocket 17 and the tension wheel 16, that is, the driving sprocket 13, the driven sprocket 17 and the tension wheel 16 are connected by the triangular transmission chain 3. During the rotation of the driving wheel 12, the driving shaft 4 is driven to rotate, and the power of the driving shaft 4 is transmitted to the driven sprocket 17 through the triangular transmission chain 3. During the rotation of the driven sprocket 17, the driven shaft 11 and the driven wheel 1 fixed on the driven shaft 11 are driven to rotate, and the driven wheel transmits the power to the hanging machine through the chain transmission.

[0024] When the lifting mechanism drives the driven frame 9 to move upward, the driven shaft 11 arranged on the driven frame 9 and the driven sprocket 17 fixed at the end of the driven shaft 11 also rise accordingly, and the distance between the driving sprocket 13 and the driven sprocket 17 becomes smaller. At the same time, the tensioning spring 2 also rises with the driven frame 9. Under the pulling action of the tensioning spring 2, one end of the swing rod 14 connected to the tensioning spring 2 swings upward around the connecting end of the swing rod 14 and the frame 8. At this time, the tensioning wheel 16 arranged on the swing rod 14 also swings upward, which has a tensioning effect on the triangular transmission chain 3 to prevent the triangular transmission chain 3 from being too loose. At this time, the tensioning spring 2 is in a stretched state. When the lifting mechanism drives the driven frame 9 to move downward, the driven shaft 11 and the driven sprocket 17 fixed at the end of the driven shaft 11 also descend, the distance between the driving sprocket 13 and the driven sprocket 17 increases, and the tensioning spring 2 also descends with the driven frame 9. Under the elastic force of the tensioning spring 2, one end of the swing rod 14 connected to the tensioning spring 2 is pushed to swing rapidly downward around the connection end of the swing rod 14 and the frame 8. At this time, the tensioning wheel 16 set on the swing rod 14 also descends rapidly to prevent the tension of the triangular transmission chain 3 from being too tight. In summary, during the lifting process, the tension of the triangular transmission chain 3 is adjusted by the tensioning spring 2 and the tensioning wheel 16.

[0025] The working process of the transmission device is as follows. During the operation of the hydraulic cylinder 7, the movable frame 4 is driven to rise and fall. When the movable frame 4 rises, the movable rod 5 and the movable pulley 15 are driven to rise. At this time, one end of the flexible rope 6 wrapped around the movable pulley 15 drives the driven frame 9 to rise, and the height of the entire green onion harvester is driven to rise through the driven frame 9. During the rising process of the driven frame 9, the power of the driving shaft 10 is transmitted to the driven shaft 11 through the triangular transmission chain 3. At the same time, during the rising process of the driven frame 9, the position of the driven sprocket 17 changes. In order to prevent the tension of the triangular transmission chain 3 from being too loose, the triangular transmission chain 3 is tensioned by the tensioning spring 2 and the tensioning wheel 16. When the movable frame 4 descends, the movable rod 5 and the movable pulley 15 are driven to descend. At this time, one end of the flexible rope 6 wrapped around the movable pulley 15 drives the driven frame 9 to descend, and the height of the entire green onion harvester is driven to decrease through the driven frame 9. During the descent of the driven frame 9, the power of the driving shaft 10 is transmitted to the driven shaft 11 through the triangular transmission chain 3. At the same time, as the driven frame 9 descends, the driven sprocket 17 also descends. In order to prevent the triangular transmission chain 3 from being over-tensioned, the tensioning wheel 16 is rapidly lowered through the tensioning spring 2 to prevent the triangular transmission chain 3 from being over-tensioned, thereby maintaining a constant tension in the triangular transmission chain 3.

[0026] The above is a detailed introduction to a hydraulic lifting transmission device provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention. The above description of the disclosed embodiments enables professionals and technicians in this field to implement or use the present invention. Various modifications to these embodiments will be obvious to professionals and technicians in this field, and the general principles defined in this article can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown in this article, but will conform to the widest range consistent with the principles and novel features disclosed in this article.

Claims

1. A hydraulic lifting transmission device, characterized in that: It includes a lifting mechanism and a transmission mechanism, wherein the lifting mechanism is connected with the transmission mechanism; The lifting mechanism comprises a frame (8), a movable frame (4), a movable rod (5), a hydraulic cylinder (7), a movable pulley (15) and a flexible rope (6); the movable frame (4) is slidably connected to the upper part of the frame (8); the hydraulic cylinder (7) is located below the movable frame (4); the hydraulic cylinder (7) is arranged on the frame (8); the hydraulic cylinder (7) pushes the movable frame (4) to move up and down; a movable rod (5) is fixed to the upper surface of the movable frame (4); movable pulleys (15) are respectively arranged at both ends of the movable rod (5); flexible ropes (6) are respectively wound around the movable pulleys (15); one end of the flexible rope (6) is fixedly connected to the middle part of the frame (8); the other end of the flexible rope (6) passes around the movable pulley (15) and is connected to the driven frame of the transmission mechanism; The transmission mechanism comprises a driven frame (9), a driving shaft (10), a driven shaft (11), a driving sprocket (13), a driven sprocket (17), a tensioning wheel (16) and a triangular transmission chain (3); the driving shaft (10) is arranged on the frame (8), the driven shaft (11) is arranged on the driven frame (9), the end of the driving shaft (10) is provided with a driving sprocket (13), the end of the driven shaft (11) is provided with a driven sprocket (17), a swing rod (14) is connected between the side surfaces of the frame (8) and the driven frame (9), and the swing rod (16) is connected to the side surfaces of the frame (8) and the driven frame (9). One end of the swing lever (14) is hinged to the middle of the frame (8), the other end of the swing lever (14) is connected to the driven frame (9) through a tensioning spring (2), a tensioning wheel (16) is provided on the swing lever (14), the driving sprocket (13), the driven sprocket (17) and the tensioning wheel (16) are located on the same side of the frame (8), and a triangle is formed between the driving sprocket (13), the driven sprocket (17) and the tensioning wheel (16), and the triangle transmission chain (3) is sleeved on the outer sides of the driving sprocket (13), the driven sprocket (17) and the tensioning wheel (16); The frame (8) is in the shape of a frame arranged in a vertical direction, and comprises two vertical guide columns, and vertical slide grooves are respectively arranged on the opposite surfaces of the two guide columns. The movable frame (4) is located between the two guide columns at the upper part of the frame (8), and the two ends of the movable frame (4) are respectively arranged in the slide grooves of the guide columns, and the movable frame (4) slides up and down along the slide grooves.

2. A hydraulic lifting transmission device according to claim 1, characterized in that: The driving shaft (10) is located above the driven shaft (11), the swing rod (14) is arranged in an inclined manner, and the end of the swing rod (14) connected to the frame (8) is higher than the end of the swing rod (14) connected to the driven frame (9).

3. A hydraulic lifting transmission device according to claim 1, characterized in that: A driving wheel (12) is fixed to the middle of the driving shaft (10), and a driven wheel (1) is fixed to the middle of the driven shaft (11).

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