Grain unloading transmission device for harvester

Abstract

The utility model discloses a grain unloading transmission device for a harvester, which comprises an engine belt wheel, a grain unloading transmission belt, a grain unloading supporting belt, a grain unloading belt wheel, a grain unloading transmission shaft, a main transmission chain wheel, a transmission chain, a grain box bottom auger chain wheel, a grain unloading cylinder transmission chain wheel, a grain unloading transmission gear box I, a vertical auger and a grain unloading transmission gear box II, the grain unloading transmission device comprises a grain unloading transmission belt, an engine belt wheel, a grain unloading belt wheel, a main transmission chain wheel, a horizontal auger, a grain box bottom auger, a grain unloading barrel and a grain box, the grain unloading transmission belt is connected between the engine belt wheel and the grain unloading belt wheel in a sleeved mode, the grain unloading belt wheel is fixed to the outer side face of the grain unloading transmission shaft, and one end of the grain unloading transmission shaft is connected with the main transmission chain wheel. And during grain unloading, hierarchical control is performed according to a set combination and separation sequence, so that the starting operation load is reduced, the grain scattering risk caused by halfway stopping of the grain unloading barrel filled with grains is reduced, and the use convenience is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of harvesters, in particular to a grain unloading transmission device for harvesters. Background Art

[0002] The grain unloading part is one of the main functional modules of the harvester and is also one of the parts that are prone to failure. The working path of grain during unloading is through the auger at the bottom of the grain box - the auger of the grain unloading barrel (vertical auger and horizontal auger) - the grain receiving truck or external site.

[0003] In traditional grain unloading devices, when the grain box is full of grain and needs to be unloaded, the auger at the bottom of the grain box and the auger of the grain unloading barrel work at the same time. The workload is heavy at the moment of starting, and transmission failure is prone to occur. On the other hand, when the grain in the grain box has not been unloaded and the grain receiving vehicle is full and the unloading needs to be stopped or the unloading process is unexpectedly terminated, since the grain unloading barrel is full of grain, grain will be scattered at the unloading port. During the period of secondary unloading, the load is heavy and it is more prone to failure. In addition, most of the current grain unloading clutch devices are operated by manual mechanical handle linkage, and manual operation is required during harvesting operations, which has high labor intensity and poor operating comfort. Summary of the invention

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a grain unloading transmission device for a harvester. The two-stage clutch device is adopted. On the basis of the traditional single-stage clutch device, a two-stage clutch device of the auger at the bottom of the grain box is added. The two-stage clutch is electrically controlled. When unloading grain, graded control is performed according to the set connection and separation sequence, which reduces the starting operation load, improves the reliability of grain unloading, and is comfortable to operate. It can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a grain unloading transmission device for a harvester, comprising an engine pulley, a grain unloading transmission belt, a grain unloading support belt, a grain unloading pulley, a grain unloading transmission shaft, a main transmission sprocket, a transmission chain, a grain box bottom auger sprocket, a grain unloading drum transmission sprocket, a grain unloading transmission gear box I, a vertical auger, a grain unloading transmission gear box II, a horizontal auger, a grain box bottom auger, a grain unloading drum and a grain box, the grain unloading transmission belt is sleeved between the engine pulley and the grain unloading pulley, the grain unloading pulley is fixed to the outer side of the grain unloading transmission shaft, and one end of the grain unloading transmission shaft is connected to the main transmission The grain unloading drum is connected with the grain tank bottom auger sprocket, the transmission chain is sleeved on the main transmission sprocket, the grain unloading drum transmission sprocket and the grain tank bottom auger sprocket, the grain unloading drum transmission sprocket is connected with the vertical auger through the grain unloading transmission gear box I, the upper end of the vertical auger is connected with the horizontal auger through the grain unloading transmission gear box II, the horizontal auger is located in the grain unloading drum, the grain tank bottom auger sprocket is connected with the grain tank bottom auger, one side of the grain unloading transmission belt is provided with a first-level grain unloading clutch tensioning structure for controlling its tensioning or disengagement, and a second-level electromagnetic clutch for controlling the separation and connection is provided between the grain tank bottom auger sprocket and the grain tank bottom auger.

[0006] As an optimal technical solution of the utility model, the first-level grain unloading clutch tensioning structure includes an upper supporting belt, a first-level clutch tensioning pulley, a first-level clutch tensioning bracket, a first-level clutch cylinder, a clutch cylinder tension spring and a tensioning bracket rotating shaft. The upper supporting belt and the first-level clutch tensioning pulley are respectively connected to the first-level clutch tensioning bracket, the first-level clutch tensioning bracket is rotatably connected to the grain box through the tensioning bracket rotating shaft, one end of the first-level clutch cylinder is connected to the grain box, and the other end is connected to the first-level clutch tensioning bracket, and the clutch cylinder tension spring is respectively connected to both ends of the first-level clutch cylinder.

[0007] As a preferred technical solution of the utility model, a tensioning sprocket is provided on one side of the auger sprocket at the bottom of the grain box, and the transmission chain is sleeved on the outer side of the tensioning sprocket.

[0008] As a preferred technical solution of the utility model, one end of the secondary electromagnetic clutch is fixedly connected to the auger sprocket at the bottom of the grain box through a connecting bolt, and the other end of the secondary electromagnetic clutch is connected to the auger at the bottom of the grain box.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows: the grain unloading transmission device for the harvester is provided with a two-stage grain unloading clutch device, and is graded and controlled according to the set engagement and separation sequence. The main benefits are three points: First, it can realize secondary grain unloading midway, effectively reduce the instantaneous load of the secondary grain unloading combination, reduce the risk of grain scattering due to stopping the unloading midway and causing the grain barrel to be full of grain, improve the reliability of the grain unloading transmission, and increase the effective operating time of the harvester; second, compared with the traditional single-stage grain unloading clutch device, the grain unloading transmission device of the utility model adopts a two-stage clutch to realize orderly control of engagement and separation, which can reduce the operating load during engagement and improve the reliability of use; third, the grain unloading transmission device of the utility model adopts a two-stage clutch device, which has the advantages of simple structure, easy implementation, convenient and comfortable operation, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the utility model;

[0011] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0012] Figure 3 It is a schematic diagram of the first-stage unloading clutch tensioning structure;

[0013] Figure 4 This is a schematic diagram of the installation of one end of the secondary electromagnetic clutch;

[0014] Figure 5 This is a schematic diagram of the installation of the other end of the secondary electromagnetic clutch.

[0015] In the figure: 1 engine pulley, 2 grain unloading drive belt, 3 first-level grain unloading clutch tensioning structure, 3-1 upper support belt, 3-2 first-level clutch tensioning pulley, 3-3 first-level clutch tensioning bracket, 3-4 first-level clutch cylinder, 3-5 clutch cylinder tension spring, 3-6 tensioning bracket rotating shaft, 4 grain unloading support belt, 5 grain unloading pulley, 6 grain unloading drive shaft, 7 main drive sprocket, 8 drive chain, 9 tensioning sprocket, 10 second-level electromagnetic clutch, 11 grain box bottom auger sprocket, 12 grain unloading drum drive sprocket, 13 grain unloading drive gear box I, 14 vertical auger, 15 grain unloading drive gear box II, 16 horizontal auger, 17 grain box bottom auger, 18 grain unloading drum, 19 grain box, 20 connecting bolts. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments (for the convenience of description and understanding, the following is a schematic diagram of the present invention). Figure 1Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0017] See also Figure 1-5 The utility model provides a technical solution: a grain unloading transmission device for a harvester, comprising an engine pulley 1, a grain unloading transmission belt 2, a grain unloading support belt 4, a grain unloading pulley 5, a grain unloading transmission shaft 6, a main transmission sprocket 7, a transmission chain 8, a grain box bottom auger sprocket 11, a grain unloading barrel transmission sprocket 12, a grain unloading transmission gear box I 13, a vertical auger 14, a grain unloading transmission gear box II 15, a horizontal auger 16, a grain box bottom auger 17, a grain unloading barrel 18 and a grain box 19;

[0018] The first-level grain unloading clutch tensioning device 3, the grain unloading transmission shaft 6, and the grain box bottom auger 17 are respectively connected to the grain box 19 for rotation, and the grain unloading support belt 4 and the grain unloading barrel 18 are respectively fixedly connected to the grain box 19, and the grain unloading transmission belt 2 is sleeved between the engine pulley 1 and the grain unloading pulley 5, and the grain unloading pulley 5 is fixed to the outer side of the grain unloading transmission shaft 6, and one end of the grain unloading transmission shaft 6 is connected to the main transmission sprocket 7, and the transmission chain 8 is sleeved on the main transmission sprocket 7, the grain unloading barrel transmission sprocket 12 and the grain box bottom auger sprocket 11, and the grain unloading barrel transmission sprocket 12 is connected to the vertical auger 14 through the grain unloading transmission gear box I 13, and the upper end of the vertical auger 14 is connected to the horizontal auger 16 through the grain unloading transmission gear box II 15, and the horizontal auger 16 is located in the grain unloading barrel 18, and the grain box bottom auger sprocket 11 is connected to the grain box bottom auger 17;

[0019] A first-level unloading clutch tensioning structure 3 for controlling the tensioning or disengagement of the grain unloading transmission belt 2 is provided on one side thereof. The first-level unloading clutch tensioning structure 3 comprises an upper supporting belt 3-1, a first-level clutch tensioning pulley 3-2, a first-level clutch tensioning bracket 3-3, a first-level clutch oil cylinder 3-4, a clutch oil cylinder tension spring 3-5 and a tensioning bracket rotating shaft 3-6. The upper supporting belt 3-1 and the first-level clutch tensioning pulley 3-2 are respectively connected to the first-level clutch tensioning bracket 3-3, the first-level clutch tensioning bracket 3-3 is rotationally connected to the grain box 19 through the tensioning bracket rotating shaft 3-6, one end of the first-level clutch oil cylinder 3-4 is connected to the grain box 19, and the other end is connected to the first-level clutch tensioning bracket 3-3, and the clutch oil cylinder tension spring 3-5 is respectively connected to the two ends of the first-level clutch oil cylinder 3-4;

[0020] A secondary electromagnetic clutch 10 is provided between the grain box bottom auger sprocket 11 and the grain box bottom auger 17 to control their separation and connection. One end of the secondary electromagnetic clutch 10 is fixedly connected to the grain box bottom auger sprocket 11 by a connecting bolt 20, and the other end of the secondary electromagnetic clutch 10 is connected to the grain box bottom auger 17.

[0021] Furthermore, a tensioning sprocket 9 is provided on one side of the auger sprocket 11 at the bottom of the grain box. The tensioning sprocket 9 is connected to the grain box 19 , and the transmission chain 8 is sleeved on the outer side of the tensioning sprocket 9 .

[0022] The input end of the primary clutch oil cylinder 3 - 4 is electrically connected to the output end of the primary clutch control solenoid valve switch, and the input end of the secondary electromagnetic clutch 10 is electrically connected to the output end of the secondary clutch control switch.

[0023] During operation, hierarchical control is performed according to the set combination and separation sequence. First, the first-level grain unloading clutch tensioning structure 3 is combined, that is, the first-level clutch control solenoid valve switch is turned on, and the cylinder rod of the first-level clutch oil cylinder 3-4 is extended, driving the first-level grain unloading clutch tensioning structure 3 to rotate downward around the tensioning bracket shaft 3-6. At this time, the grain unloading transmission belt 2 is tensioned by the first-level clutch tensioning pulley 3-2, and the engine pulley 1 rotates and drives the grain unloading transmission belt 2, the grain unloading transmission shaft 6, the main transmission sprocket 7, the transmission chain 8, the tensioning sprocket 9, the grain box bottom auger sprocket 11, the grain unloading barrel transmission sprocket 12, the grain unloading transmission gear box I 13, the vertical auger 14, the grain unloading transmission gear box II 15, and the horizontal auger 16 to rotate. At this time, the second-level electromagnetic clutch 10 is idling, and then the second-level clutch control switch is turned on to control the second-level electromagnetic clutch 10 to combine and drive the grain box bottom auger 17 to rotate to realize the rotation of the entire grain unloading transmission system. This is a work flow of grain unloading transmission combination;

[0024] When grain unloading is completed or interrupted, first close the secondary clutch control switch, at this time the secondary electromagnetic clutch 10 is separated, the auger 17 at the bottom of the grain box stops rotating, and grain is no longer transported to the grain unloading barrel 18. At this time, the grain unloading barrel drive sprocket 12, the grain unloading drive gear box I 13, the vertical auger 14, the grain unloading drive gear box II 15, and the horizontal auger 16 are still rotating and working until the grain in the grain unloading barrel 18 is completely discharged. Finally, close the primary clutch control solenoid valve switch, the primary clutch cylinder 3-4 is depressurized, and the primary clutch cylinder 3-4 cylinder rod is pulled back by the rebound tension of the clutch cylinder tension spring 3-5, driving the primary grain unloading clutch tensioning structure 3 to return upward, the tensioning force of the primary clutch tensioning pulley combination 3-2 is released, and the upper support belt 3-1 lifts the grain unloading drive belt 2 upward with the primary grain unloading clutch tensioning structure 3, so that the entire transmission power of the grain unloading transmission mechanism is cut off, and the purpose of power separation is achieved. This is a grain unloading transmission separation workflow, and the above two workflows constitute a complete grain unloading workflow.

[0025] The utility model adopts a two-stage clutch to realize orderly controlled engagement and separation, which can reduce the operating load during engagement, reduce the instantaneous operating load of the secondary grain unloading engagement during the process, reduce the risk of grain scattering due to stopping the unloading during the process and causing the grain barrel to be full of grain, improve the reliability of the grain unloading transmission, and extend the effective operating time of the harvester.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grain unloading transmission device for a harvester, comprising an engine pulley (1), a grain unloading transmission belt (2), a grain unloading support belt (4), a grain unloading pulley (5), a grain unloading transmission shaft (6), a main transmission sprocket (7), a transmission chain (8), a grain box bottom auger sprocket (11), a grain unloading drum transmission sprocket (12), a grain unloading transmission gear box I (13), a vertical auger (14), a grain unloading transmission gear box II (15), a horizontal auger (16), a grain box bottom auger (17), a grain unloading drum (18) and a grain box (19), wherein the grain unloading transmission belt (2) is sleeved between the engine pulley (1) and the grain unloading pulley (5), and the grain unloading pulley (5) is fixed On the outer side of the grain unloading transmission shaft (6), one end of the grain unloading transmission shaft (6) is connected to the main transmission sprocket (7), the transmission chain (8) is sleeved on the main transmission sprocket (7), the grain unloading barrel transmission sprocket (12) and the grain box bottom auger sprocket (11), the grain unloading barrel transmission sprocket (12) is connected to the vertical auger (14) through the grain unloading transmission gear box I (13), the upper end of the vertical auger (14) is connected to the horizontal auger (16) through the grain unloading transmission gear box II (15), the horizontal auger (16) is located in the grain unloading barrel (18), and the grain box bottom auger sprocket (11) is connected to the grain box bottom auger (17), characterized in that: A primary grain unloading clutch tensioning structure (3) for controlling the tensioning or disengagement of the grain unloading transmission belt (2) is provided on one side thereof, and a secondary electromagnetic clutch (10) for controlling the separation and engagement of the grain box bottom auger sprocket (11) and the grain box bottom auger (17) is provided between them.

2. A grain unloading transmission device for a harvester according to claim 1, characterized in that: The first-stage grain unloading clutch tensioning structure (3) comprises an upper supporting belt (3-1), a first-stage clutch tensioning pulley (3-2), a first-stage clutch tensioning bracket (3-3), a first-stage clutch oil cylinder (3-4), a clutch oil cylinder tension spring (3-5) and a tensioning bracket rotating shaft (3-6); the upper supporting belt (3-1) and the first-stage clutch tensioning pulley (3-2) are respectively connected to the first-stage clutch tensioning bracket (3-3); the first-stage clutch tensioning bracket (3-3) is rotationally connected to the grain box (19) via the tensioning bracket rotating shaft (3-6); one end of the first-stage clutch oil cylinder (3-4) is connected to the grain box (19), and the other end is connected to the first-stage clutch tensioning bracket (3-3); the clutch oil cylinder tension spring (3-5) is respectively connected to the two ends of the first-stage clutch oil cylinder (3-4).

3. The grain unloading transmission device for a harvester according to claim 1, characterized in that: A tensioning sprocket (9) is provided on one side of the grain box bottom auger sprocket (11), and the transmission chain (8) is sleeved on the outer side of the tensioning sprocket (9).

4. The grain unloading transmission device for a harvester according to claim 1, characterized in that: One end of the secondary electromagnetic clutch (10) is fixedly connected to the auger sprocket (11) at the bottom of the grain box via a connecting bolt (20), and the other end of the secondary electromagnetic clutch (10) is connected to the auger (17) at the bottom of the grain box.

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