Rotary cultivator transmission case supporting mechanism

Abstract

The utility model discloses a rotary cultivator transmission case supporting mechanism which comprises a cross beam installed at the tail of an agricultural tractor, a transmission case is installed and fixed on the rear side of the cross beam, a coulter assembly is installed and fixed on the lower side of the cross beam, and a rotary blade assembly is installed on the lower side of the transmission case. Two supporting plates used for supporting are arranged between the transmission case and the cross beam, the corresponding positioning plate on the upper side is used for fixing the transmission case, the corresponding positioning plate on the lower side is used for fixing the cross beam, the positioning plates are provided with penetrating holes used for fixing, and positioning and fixing are conducted through bolts. The supporting plate is of an inclined supporting structure, the transmission box can be obliquely erected, the transmission shaft corresponding to the transmission box and the transmission position of the coupler are kept at the same horizontal position, meanwhile, the erected transmission box can lift the rotary blade assembly to enable the rotary blade assembly to correspond to the coulter assembly, after the coulter assembly turns soil, the soil is transited through a coulter arc face, and therefore the soil turning efficiency is improved. And the coulter assembly can be just connected, so that the soil can be crushed.

Description

Technical Field

[0001] The utility model belongs to the technical field of agricultural machinery and equipment, in particular to a transmission box supporting mechanism for a rotary tiller. Background Art

[0002] A rotary tiller is a tilling machine that is used in conjunction with a tractor to complete plowing and harrowing operations. The main body of the rotary tiller has a crossbeam, on which components such as a plow blade and a rotary tiller are installed along the length direction. The front end of the crossbeam is suspended and installed at the tail of the agricultural tractor, and is equipped with a coupling to drive the rotary tiller to rotate. The plow blade is located on the lower side of the crossbeam. It is a full metal component with a pointed tip at the front end for inserting into the soil. The tip has an arc-shaped transition surface toward the tail end, and its main function is to turn over the soil. The rotary tiller is located on the upper side of the plow blade and is used to break up the soil that has just been turned over. The plow blade and the rotary tiller are basically in a one-to-one correspondence. The rotary tiller consists of a blade and a rotating shaft. The blades are evenly distributed around the rotating shaft. At the same time, a transmission box is installed above the rotating shaft. The transmission box has a transmission gear inside, which is used to drive each transmission box component through the driving action of the coupling, so that the rotating shaft rotates synchronously.

[0003] The transmission box, as the transmission component for the rotation of the rotary tiller, needs to be installed at the tail of the beam and keep a certain distance from the plow so that the turned-up soil just corresponds to the rotary tiller. Utility Model Content

[0004] The utility model aims to provide a transmission box support mechanism for a rotary tiller, which mainly solves the problem that the transmission box is installed on the rear side of a crossbeam and needs to maintain a certain distance from a bottom plow blade, and the existing support structure for installing the transmission box is unstable.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] A rotary tiller transmission box support mechanism comprises a crossbeam mounted on the rear of an agricultural tractor, a transmission box is mounted and fixed on the rear side of the crossbeam, a plow assembly is mounted and fixed on the lower side of the crossbeam, and a rotary tiller assembly is mounted on the lower side of the transmission box;

[0007] There are two support plates between the corresponding crossbeams of the transmission box. The support plates are plate structures and are arranged obliquely. There are positioning plates on both sides of the support plates. The corresponding positioning plates on the upper side are used to fix the transmission box, and the corresponding positioning plates on the lower side are used to fix the crossbeams. The positioning plates are provided with through holes for fixing, and are positioned and fixed by bolts.

[0008] Furthermore, the two support plates corresponding to the transmission box are symmetrically arranged, and the positioning plates corresponding to the lower sides of the support plates are arranged against the corresponding sides of the crossbeam.

[0009] A first U-shaped bolt is installed between the positioning plate and the crossbeam corresponding to the lower side of the support plate. The crossbeam has a square cross-section, which matches and is fixedly sleeved with the first U-shaped bolt. The end of the first U-shaped bolt is a threaded end, which is used to be inserted into the corresponding through hole of the positioning plate and fixed by a nut.

[0010] The upper end of the plow assembly is fixed to the crossbeam by a second U-shaped bolt. The plow assembly has a mounting plate corresponding to the crossbeam and is provided with a through hole for the end of the second U-shaped bolt to pass through and is fixed by a nut. There are two second U-shaped bolts, which are respectively located on the inner sides of the two first U-shaped bolts.

[0011] Furthermore, the transmission box has a mounting block on the fixed side of the corresponding crossbeam, the positioning plate corresponding to the upper side of the support plate is in contact with the mounting block, the mounting block and the positioning plate have corresponding openings, and are fixed by bolts.

[0012] The utility model has the following beneficial effects: a support plate structure is provided between the middle cross beam and the transmission box of the utility model. As a supporting structure, the support plate is an oblique support structure, which can obliquely elevate the transmission box so that the transmission position of the transmission shaft corresponding to the transmission box and the transmission position of the coupling are maintained at the same horizontal position. At the same time, the elevated transmission box can lift the rotary tiller assembly so that the rotary tiller assembly corresponds to the plow assembly. After the plow assembly turns the soil, the soil transitions through the arc surface of the plow and is just connected to the plow assembly, thereby crushing the soil.

[0013] There are positioning plates on both sides of the support plate. The positioning plates are arranged vertically with the cross plate and can be respectively abutted against the transmission box and the crossbeam mounting surface. They are more stable after being fixed with bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.

[0015] Figure 1 : Schematic diagram of the support structure of the utility model.

[0016] Figure 2 : Schematic diagram of the support mechanism and beam installation structure of the utility model.

[0017] Figure 3 : Schematic diagram of the overall installation structure of the utility model.

[0018] In the accompanying drawings, the list of components represented by each reference numeral is as follows: crossbeam 1, transmission box 11, plow blade assembly 3, rotary blade assembly 2, support plate 4, positioning plate 41, transmission box 11, first U-shaped bolt 5, second U-shaped bolt 6, mounting plate 31, mounting block 21. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] like Figure 1-3 As shown: a rotary tiller transmission box support mechanism, including a crossbeam 1 installed at the rear of an agricultural tractor. The entire crossbeam is pulled to move by the dragging action of the tractor. A transmission box 11 is installed and fixed on the rear side of the crossbeam 1. The function of the transmission box is transmission. The transmission box is located between the plow blade assembly and the coupling. A driving device is also installed at the rear of the tractor for driving the transmission box through the coupling. A plow blade assembly 3 is installed and fixed on the lower side of the crossbeam 1, and a rotary tiller blade assembly 2 is installed on the lower side of the transmission box 11; the transmission box corresponds to the rotary tiller blade assembly on the lower side one by one, and there is a linkage shaft between adjacent transmission boxes for synchronous rotation.

[0021] There are two supporting plates 4 between the transmission box 11 and the corresponding crossbeam 1. The supporting plates 4 are plate structures. The plate surfaces corresponding to the supporting plates are vertical surfaces, which are beneficial to improving the supporting strength in the vertical direction. The supporting plates 4 are inclined. There are positioning plates 41 on both sides of the supporting plates 4. The positioning plates and the supporting plates are a vertical integrated structure. The corresponding positioning plates 41 on the upper side are used to fix the transmission box 11, and the corresponding positioning plates 41 on the lower side are used to fix the crossbeam 1. The positioning plates 41 are provided with through holes for fixing, and are positioned and fixed by bolts.

[0022] The utility model provides a support plate structure between the middle cross beam and the transmission box. As a supporting structure, the support plate is an oblique support structure, which can obliquely elevate the transmission box so that the transmission position of the transmission shaft corresponding to the transmission box and the coupling can be maintained at the same horizontal position. At the same time, the elevated transmission box can lift the rotary tiller assembly so that the rotary tiller assembly corresponds to the plow assembly. After the plow assembly turns the soil, the soil transitions through the arc surface of the plow and can be connected to the plow assembly, so that the soil can be crushed.

[0023] There are positioning plates on both sides of the support plate. The positioning plates are arranged vertically with the cross plate and can be respectively abutted against the transmission box and the crossbeam mounting surface. They are more stable after being fixed with bolts.

[0024] like Figure 1 As shown: the two support plates 4 corresponding to the transmission box 11 are symmetrically arranged, and the positioning plate 41 corresponding to the lower side of the support plate 4 is arranged against the corresponding side of the crossbeam 1.

[0025] The first U-shaped bolt 5 is installed between the positioning plate 41 and the beam 1 corresponding to the lower side of the support plate 4. The cross section of the beam 1 is square, which matches and is sleeved and fixed with the first U-shaped bolt 5. The end of the first U-shaped bolt 5 is a threaded end, which is used to be inserted into the corresponding through hole of the positioning plate 41 and fixed by a nut. The U-shaped bolt itself has a circular cross section. After being sleeved on the beam, it is easy to move sideways. However, after the U-shaped bolt is fixed on the positioning plate, since the positioning plate and the beam are set against one side, it can complement the fixing method of the U-shaped bolt well, preventing the U-shaped bolt from moving sideways after being fixed.

[0026] The upper end of the plow assembly 3 is fixed to the crossbeam 1 by the second U-shaped bolt 6. The plow assembly 3 has a mounting plate 31 corresponding to the crossbeam 1, and is provided with a through hole for the end of the second U-shaped bolt 6 to pass through, and is fixed by a nut. There are two second U-shaped bolts 6, which are respectively located inside the two first U-shaped bolts 6. Since the first U-shaped bolt is positioned and fixed stably, the second U-shaped bolt can be well limited to prevent the second U-shaped bolt from sliding sideways. The first U-shaped bolt plays a good role in limiting the position of the second U-shaped bolt.

[0027] like Figure 2 As shown: the transmission box 11 has a mounting block 21 on the fixed side corresponding to the cross beam 1, and the positioning plate 41 corresponding to the upper side of the support plate 4 is in contact with the mounting block 21. The mounting block 21 and the positioning plate 41 have corresponding holes and are fixed by bolts. The mounting block corresponds to the end side of the positioning plate. There are four mounting blocks, which are evenly distributed and reasonably stressed, so that the rotary blade assembly can remain stable under high-speed operation.

[0028] This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can better understand and utilize the present invention.

Claims

1. A rotary tiller transmission box support mechanism, characterized in that: It comprises a crossbeam (1) mounted on the rear of an agricultural tractor, a transmission box (11) being mounted and fixed on the rear side of the crossbeam (1), a plow blade assembly (3) being mounted and fixed on the lower side of the crossbeam (1), and a rotary tiller blade assembly (2) being mounted on the lower side of the transmission box (11); Two supporting plates (4) are provided between the transmission box (11) and the corresponding cross beam (1); the supporting plates (4) are plate structures and are arranged obliquely; two sides of the supporting plates (4) are positioning plates (41); the positioning plates (41) corresponding to the upper side are used to fix the transmission box (11); and the positioning plates (41) corresponding to the lower side are used to fix the cross beam (1); the positioning plates (41) are provided with through holes for fixing, and are fixed by bolts for positioning.

2. A rotary tiller transmission box support mechanism according to claim 1, characterized in that: The two support plates (4) corresponding to the transmission box (11) are symmetrically arranged, and the positioning plates (41) corresponding to the lower sides of the support plates (4) are arranged in contact with the corresponding sides of the crossbeam (1).

3. A rotary tiller transmission box support mechanism according to claim 2, characterized in that: A first U-shaped bolt (5) is installed between the positioning plate (41) corresponding to the lower side of the support plate (4) and the crossbeam (1); the crossbeam (1) has a square cross section and is matched with and sleeved on the first U-shaped bolt (5); the end of the first U-shaped bolt (5) is a threaded end and is used to be inserted into the corresponding through hole of the positioning plate (41) and fixed by a nut.

4. A rotary tiller transmission box support mechanism according to claim 3, characterized in that: The upper end of the plow blade assembly (3) is fixed to the cross beam (1) via a second U-shaped bolt (6); the plow blade assembly (3) has a mounting plate (31) corresponding to the cross beam (1) and is provided with a through hole for the end of the second U-shaped bolt (6) to pass through, and is fixed via a nut; there are two second U-shaped bolts (6), which are respectively located on the inner sides of the two first U-shaped bolts (5).

5. The rotary tiller transmission box support mechanism according to claim 1, characterized in that: The transmission box (11) has a mounting block (21) on the fixed side corresponding to the crossbeam (1), a positioning plate (41) corresponding to the upper side of the support plate (4) abuts against the mounting block (21), and the mounting block (21) and the positioning plate (41) have corresponding openings and are fixed by bolts.

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