Push rod control device for transfer case of harvesting machine

Abstract

A push rod operating device for a harvesting machine transfer case comprises an electric push rod, a pin shaft, a shifting plate, a shifting piece, a centering shaft, a shifting fork shaft, a shifting shaft, a spring, a stop lever and a fixing plate. The fixing plate is fixed to the transfer case through bolts, and the electric push rod is fixedly installed on the fixing plate. The electric push rod, the shifting plate and the pin shaft are movably connected through the gasket and the cotter pin; the centering shaft is fixedly connected to the fixing plate, and the shifting plate, the shifting piece and the centering shaft are movably connected through the shaft clamp spring. And the shifting fork shaft and the shifting shaft are fixedly connected to the shifting plate. And a U-shaped groove is formed in the shifting piece. An annular groove is formed in the shifting fork shaft. The shifting shaft penetrates through the shifting piece and the long notch of the fixing plate and extends into the annular groove of the shifting fork shaft. One end of the spring is hung in the groove of the pin shaft, and the other end of the spring is hung in the groove of the stop lever; and the stop lever is fixedly connected in the U-shaped groove of the shifting piece on the fixed plate. The push rod control device is compact in structure and flexible and convenient to operate, ensures the operation safety of the transfer case of the harvesting machine, and effectively improves the working efficiency of the harvesting machine.

Description

Technical Field

[0001] The utility model belongs to the field of agricultural machinery, and relates to a transfer case of a harvesting machinery, in particular to a push rod operating device for the transfer case of the harvesting machinery. Background Art

[0002] As we all know, harvesters are an important part of agricultural machinery, and transfer cases are an important component of harvesters. Transfer cases are devices that distribute the power of harvester engines. With the rapid development of harvester technology, transfer cases have also been changing, and their operating mechanisms have also changed with the changes in the structure of transfer cases.

[0003] The utility model patent "A shift lever type transfer case operating mechanism for tractors" authorized by the State Intellectual Property Office on September 20, 2019, with application number: 2018222583148, application date: 2018.12.30, and authorization announcement number: CN209414595U. A shift lever type transfer case operating mechanism for tractors is disclosed, which includes: a transfer case assembly, a rocker arm, a pull rod, an operating force transmission device, an operating handle, etc. The transfer case assembly and the operating force transmission device are arranged on the tractor, the rocker arm is arranged on the transfer case assembly, the rocker arm is connected to the pull rod, the pull rod is a retractable pull rod, a locking nut is arranged on the pull rod, the pull rod is connected to the operating force transmission device, the operating force transmission device is arranged with an operating handle, the operating force transmission device includes a connecting fork, a bracket and an operating rod, one end of the connecting fork is arranged on the bracket, and the other end is connected to the pull rod, the bracket is a U-shaped bracket, the bracket is arranged on the tractor, the lower end of the operating rod is connected to the connecting fork, the lower end of the operating rod is arranged on the bracket, and the upper end of the operating rod is arranged with the operating handle. The operating rod and the connecting fork are preferably arranged on the bracket through a pin shaft.

[0004] To address this problem, we learned from the transfer case operating devices of similar products and developed a push rod operating device for the transfer case of harvesting machinery during design and production tests. This device eliminated the shortcomings of the original design, such as complex structure and cumbersome operation. After many tests and improvements, it achieved good results. Utility Model Content

[0005] In order to overcome the deficiencies in the prior art and ensure that the push rod operating device of the transfer case of the harvesting machinery has a simple structure, convenient operation, and safe and reliable use, it is absolutely necessary to provide a push rod operating device for the transfer case of the harvesting machinery with a compact structure, easy maintenance, and good use effect.

[0006] The utility model can achieve the above-mentioned purpose through the following technical solutions: A push rod operating device for a transfer case of a harvesting machinery, comprising: an electric push rod, a pin shaft, a shift plate, a shift piece, a centering shaft, a shift fork shaft, a shift shaft, a spring, a baffle rod, and a fixed plate; the fixed plate is fixed to the transfer case with bolts, and the electric push rod is fixedly mounted on the fixed plate; the electric push rod, the shift plate, and the pin shaft are movably connected by gaskets and cotter pins; the spring is hung on the pin shaft and the baffle rod; the centering shaft is fixedly connected to the fixed plate, and the shift plate, the shift piece and the centering shaft are movably connected by a shaft retaining spring; the shift fork shaft and the shift shaft are fixedly connected to the shift plate.

[0007] The plectrum is provided with a U-shaped groove.

[0008] The shift fork shaft is provided with an annular groove.

[0009] The shift shaft passes through the long notches of the shift piece and the fixing plate and extends into the annular groove of the shift fork shaft.

[0010] One end of the spring is hung in the groove of the pin shaft, and the other end of the spring is hung in the groove of the blocking rod.

[0011] The blocking rod is fixed on the fixing plate and blocked in the U-shaped groove of the paddle.

[0012] The utility model has the beneficial effect of adopting the above technical solution: the push rod operating device of the harvesting machine transfer box has a compact structure and convenient operation, which ensures the safety of the operation of the harvesting machine transfer box. At the same time, the push rod operating device arranged outside is more convenient for maintenance and operation, which effectively improves the working efficiency of the harvesting machine and reduces the labor intensity of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a push rod operating device for a transfer case of a harvesting machine according to the utility model;

[0014] Figure 2 The utility model is a schematic structural diagram of a push rod operating device for a transfer case of a harvesting machine installed on the transfer case (circled in the figure).

[0015] In the figure: 1-electric push rod, 2-pin shaft, 3-shift plate, 4-shift piece, 5-centering shaft, 6-shift fork shaft, 7-shift shaft, 8-spring, 9-gear lever, 10-fixed plate, A-transfer case. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1-2 As shown, a push rod operating device for a transfer case of a harvesting machinery mainly includes: an electric push rod 1, a pin shaft 2, a shift plate 3, a shift piece 4, a centering shaft 5, a shift fork shaft 6, a shift shaft 7, a spring 8, a stop rod 9, and a fixing plate 10.

[0017] Fix the fixed plate 10 to the transfer case A with bolts, and then fix the electric push rod 1 to the fixed plate 10. The electric push rod 1, the shift plate 3, and the pin 2 installed on the fixed plate 10 are movably connected through gaskets and split pins; one end of the spring 8 is hung in the groove on the pin 2, and the other end of the spring 8 is hung in the groove of the stopper 9; the centering shaft 5 is fixed to the fixed plate 10, and the shift plate 3, the shift piece 4 and the centering shaft 5 are movably connected through the shaft retaining spring; the shift fork shaft 6 and the shift shaft 7 are fixed to the shift plate 3. The shift fork shaft 6 is provided with an annular groove, and the shift shaft 7 passes through the long notch of the shift piece 4 and the fixed plate 10 and extends into the annular groove of the shift fork shaft 6. The stopper 9 is fixed to the fixed plate 10 and blocked in the U-shaped groove on the shift piece 4.

[0018] During operation, when the electric push rod 1 begins to retract, the shift plate 3 at the pin shaft 2 will retract around the centering shaft 5 and rotate close to the transfer case A, so that the shift shaft 7 welded on the shift plate 3 and the shift piece 4 (movably clamped between the shift plate 3 and the fixed plate 10 around the centering shaft 5) connected to the centering shaft 5 rotates in the direction away from the transfer case housing A. At the same time, the shift fork shaft 6 moves away from the transfer case housing A under the shifting of the shift shaft 7 in the annular groove on the shift fork shaft 6. When the electric push rod 1 continues to retract to the rotation center position that passes the shift plate 3, the shift plate 3 instantly reaches the limit position under the elastic force of the spring 8, that is, the position where the U-shaped groove on the shift piece 4 contacts the stopper 9. At this time, the part of the shift fork shaft 6 located inside the transfer case A stops the transfer case A from transmitting power. On the contrary, when the electric push rod 1 begins to extend, through a series of interlocking movements, the shift fork shaft 6 causes the transfer case A to start transmitting power.

[0019] The push rod operating device of the transfer case of the harvesting machine has a compact structure, convenient operation and safe use, and effectively improves the working efficiency of the harvesting machine.

[0020] The practical application of the present invention is not limited to the situation described in this example, and all technical solutions and improvements that do not deviate from the essential content of the present invention should fall within the scope of the claims of the present invention.

Claims

1. A push rod operating device for a transfer case of a harvesting machine, comprising: An electric push rod (1), a pin shaft (2), a shift plate (3), a shift piece (4), a centering shaft (5), a shift fork shaft (6), a shift shaft (7), a spring (8), a stopper (9), and a fixed plate (10); the characteristics are as follows: the fixed plate (10) is fixed to a transfer case (A) by bolts, and the electric push rod (1) is fixedly mounted on the fixed plate (10); the electric push rod (1), the shift plate (3), and the pin shaft (2) are movably connected via a gasket and a cotter pin; the spring (8) is mounted on the pin shaft (2) and the stopper (9); the centering shaft (5) is fixedly connected to the fixed plate (10), and the shift plate (3), the shift piece (4) and the centering shaft (5) are movably connected via a shaft retaining spring; the shift fork shaft (6) and the shift shaft (7) are fixedly connected to the shift plate (3).

2. A push rod operating device for a transfer case of a harvesting machine according to claim 1, characterized in that: The paddle (4) is provided with a U-shaped groove.

3. A push rod operating device for a transfer case of a harvesting machine according to claim 1, characterized in that: The shift fork shaft (6) is provided with an annular groove.

4. A push rod operating device for a transfer case of a harvesting machine according to claim 1, characterized in that: The shift shaft (7) passes through the long slots of the shift piece (4) and the fixing plate (10) and extends into the annular groove of the shift fork shaft (6).

5. A push rod operating device for a transfer case of a harvesting machine according to claim 1, characterized in that: One end of the spring (8) is mounted in the groove of the pin (2), and the other end of the spring (8) is mounted in the groove of the blocking rod (9).

6. A push rod operating device for a transfer case of a harvesting machine according to claim 1, characterized in that: The blocking rod (9) is fixedly connected to the fixing plate (10) and is blocked in the U-shaped groove of the paddle (4).

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