Cutting knife driving device

Abstract

The utility model discloses a cutting knife driving device which comprises a cutting table, a transverse knife assembly and a first driving mechanism, the first driving mechanism is used for controlling the transverse knife assembly to do transverse reciprocating motion and comprises a driving shaft, an eccentric chain wheel welding part is arranged at the left end of the driving shaft, and an inserting column is arranged outside the circle center of the eccentric chain wheel welding part. The core adjusting bearing is installed in an installation groove in one end of the driving connecting rod, the other end of the driving connecting rod is hinged to the first end of the triangular rocker arm, the second end of the triangular rocker arm is hinged to the transverse cutter assembly, the third end of the triangular rocker arm is provided with a fixedly-installed rotating shaft, and the second end of the triangular rocker arm is provided with a driving mandrel in a penetrating mode. A needle bearing is arranged on the outer side of the driving mandrel and embedded in an outer ring sleeve, an opening of the outer ring sleeve is attached to the side wall of the second end of the triangular rocker arm, and a blocking piece, a check ring and an oil seal are arranged at the opening of the outer ring sleeve.

Description

Technical Field

[0001] The utility model is a cutting knife driving device. Background Technology

[0002] With the rapid development of agricultural machinery, the drive sliding bearings of cutter blades are widely used. The drive sliding bearings are driven by the cutter blade swing rod to swing, and the drive sliding bearings drive the movable blade rod assembly to swing back and forth, thereby driving the movable blade rod assembly to cut. Since the crops cut by the cutter blade are mostly roots close to the ground, it is inevitable that foreign objects such as stones in the ground will be cut, causing the cutter blade to cut foreign objects. The sudden impact will cause the drive bearing to be subjected to great force, which is very easy to cause damage to the drive bearing. The drive bearing has a bad working environment and is close to the ground, and it is also very easy to be contaminated with dust, mud, water and other foreign objects, resulting in a high damage rate of the drive bearing here. Contents of utility model

[0003] The purpose of this utility model is to solve the deficiencies of the above prior art and provide a cutting knife driving device.

[0004] A cutting knife driving device comprises a cutting table, a horizontal knife assembly, and a first driving mechanism, wherein the first driving mechanism is used to control the horizontal reciprocating motion of the horizontal knife assembly, and the first driving mechanism comprises a left driving mechanism and a right driving mechanism of the same structure, and the transmission is realized between the left driving mechanism and the right driving mechanism through a transmission mechanism, and the left driving mechanism comprises a left driving shaft, and an eccentric sprocket is welded at the left end of the left driving shaft, and the eccentric sprocket is welded and provided with a plug column outside the center of the circle, and the plug column is inserted in the center-aligning bearing, and the center-aligning bearing is installed in the installation groove at one end of the left driving connecting rod,

[0005] The other end of the left driving connecting rod is hinged to the first end of the triangular rocker arm, the second end of the triangular rocker arm is hinged to the horizontal knife assembly, and the third end of the triangular rocker arm is provided with a fixedly installed rotating shaft,

[0006] A driving mandrel is passed through the second end of the triangular rocker arm, a needle bearing is arranged outside the driving mandrel, the needle bearing is embedded in the outer ring sleeve, the opening of the outer ring sleeve is in contact with the side wall of the second end of the triangular rocker arm, and a baffle, a baffle ring and an oil seal are arranged at the opening of the outer ring sleeve.

[0007] In order to offset the impact load, the cross blade assembly includes a left cross blade assembly and a right cross blade assembly. The left cross blade assembly includes a left blade bar. A connecting piece is installed at the left end of the left blade bar. The left blade bar is provided with a plurality of blades. The connecting piece is used for the second end of the triangular rocker arm. The right cross blade assembly has the same structure as the left cross blade assembly and is mirror-imaged.

[0008] In order to achieve the transmission of the left and right mechanisms, the transmission mechanism includes a transmission shaft. Transmission sprockets I and II are respectively provided at both ends of the transmission shaft. Transmission sprocket I is connected to transmission sprocket III, and transmission sprocket III is located at the right end of the left drive shaft. Transmission sprocket II is connected to transmission sprocket IV, and transmission sprocket IV is located outside the welded eccentric sprocket of the right drive shaft of the right drive structure.

[0009] Beneficial effects: Compared with the prior art, in the present utility model, an outer ring is sleeved outside the needle roller bearing at the second end of the triangular rocker arm, and sealing is achieved through parts such as oil seals. To solve the problem that when the driving sliding bearing is under a strong impact and there is muddy water, dust and other foreign matters during operation, a bushing structure is adopted to increase the service life in a harsh environment, reduce costs, lower maintenance costs, increase the service life. The bushing is installed on the pin shaft, and its radial movement on the driving mandrel is restricted by the retaining piece and the bottom of the outer ring, so that even when it is separated from the moving cutter bar assembly, it can still cooperate with the driving mandrel to move, with high reliability. The bushing has a solid structure with an inner hole similar to the appearance of a bearing, and the outer ring has heat treatment hardness requirements to increase wear resistance. Description of the Drawings

[0010] Figure 1 is a schematic diagram of a cutter driving device;

[0011] Figure 2 is a schematic diagram of a triangular rocker arm;

[0012] Figure 3 is Figure 2 a partial enlarged view of;

[0013] In the figure, 1. Horizontal cutter assembly, 2. Triangular rocker arm, 3. Left drive link, 4. Left drive shaft, 5. Rotating shaft, 6. Driving mandrel, 7. Retaining piece, 8. Retaining ring, 9. Needle roller bearing, 10. Outer ring. Specific Embodiments

[0014] To deepen the understanding of the present utility model, the following will further elaborate on the present utility model in combination with embodiments and drawings. The embodiments are only used to explain the present utility model and do not constitute a limitation to the protection scope of the present utility model.

[0015] As Figures 1 - 3 shown, horizontal cutter assembly 1, triangular rocker arm 2, left drive link 3, left drive shaft 4, rotating shaft 5, driving mandrel 6, retaining piece 7, retaining ring 8, needle roller bearing 9, outer ring 10;

[0016] A cutter driving device, comprising a cutter bar, a horizontal cutter assembly 1, and a first driving mechanism. The first driving mechanism is used to control the horizontal reciprocating movement of the horizontal cutter assembly 1. The first driving mechanism includes a left driving mechanism and a right driving mechanism with the same structure. The left driving mechanism and the right driving mechanism are driven through a transmission mechanism. The left driving mechanism includes a left driving shaft, and an eccentric sprocket welding is provided at the left end of the left driving shaft. An insertion post is provided outside the center of the eccentric sprocket welding, and the insertion post is inserted into an aligning bearing. The aligning bearing is installed in an installation groove at one end of a driving connecting rod.

[0017] The other end of the driving connecting rod is hinged to the first end of a triangular swing arm 2. The second end of the triangular swing arm 2 is hinged to the horizontal cutter assembly 1. A rotatable shaft 5 fixedly installed is provided at the third end of the triangular swing arm 2.

[0018] A driving core shaft 6 is passed through the second end of the triangular swing arm 2. A needle roller bearing 9 is provided outside the driving core shaft 6, and the needle roller bearing 9 is embedded in an outer ring sleeve 10. The opening of the outer ring sleeve 10 is attached to the side wall of the second end of the triangular swing arm 2. A retaining piece 7, a retaining ring 8 and an oil seal are provided at the opening of the outer ring sleeve 10.

[0019] In this embodiment, the horizontal cutter assembly 1 includes a left horizontal cutter assembly 1 and a right horizontal cutter assembly 1. The left horizontal cutter assembly 1 includes a left cutter bar, a connecting movable block is installed at the left end of the left cutter bar, and a plurality of cutter blades are provided on the left cutter bar. The connecting movable block is used for the second end of the triangular swing arm 2. The right horizontal cutter assembly 1 has the same structure as the left horizontal cutter assembly 1 and is arranged in a mirror image.

[0020] In this embodiment, the transmission mechanism includes a transmission shaft, and a first transmission sprocket and a second transmission sprocket are respectively provided at both ends of the transmission shaft. The first transmission sprocket is connected to a third transmission sprocket, and the third transmission sprocket is located at the right end of the left driving shaft 4. The second transmission sprocket is connected to a fourth transmission sprocket, and the fourth transmission sprocket is located outside the eccentric sprocket welding of the right driving shaft of the right driving structure.

[0021] Specifically, the left driving shaft 4 is driven by a driving pulley. The left driving shaft 4 is connected to the right driving shaft through the transmission shaft, so as to drive the right driving shaft to move. Furthermore, through the eccentric wheel mechanism, the left driving connecting rod 3 and the right driving connecting rod reciprocate, driving the triangular swing arm 2 to make a reciprocating rotary motion, so that the left and right horizontal cutter assemblies 1 move horizontally in a reciprocating manner. The triangular swing arm 2 is driven by the driving force of the left driving connecting rod 3 and makes a left and right reciprocating rotation around the rotatable shaft 5. The outer ring sleeve 10 is assembled in a limiting groove on the horizontal cutter assembly 1. When the outer ring sleeve 10 and the needle roller bearing 9 rotate around the driving core shaft 6, when the outer ring sleeve 10 rotates left and right, it pushes the horizontal cutter assembly 1 to move left and right in a reciprocating manner.

[0022] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A cutting knife driving device, characterized in that: It includes a cutting table, a horizontal blade assembly, and a first driving mechanism. The first driving mechanism is used to control the horizontal reciprocating motion of the horizontal blade assembly. The first driving mechanism includes a left driving mechanism and a right driving mechanism of the same structure. The transmission is realized between the left driving mechanism and the right driving mechanism through a transmission mechanism. The left driving mechanism includes a left driving shaft. An eccentric sprocket is welded on the left end of the left driving shaft. The eccentric sprocket is welded and provided with a plug column outside the center of the circle. The plug column is inserted in the center-aligning bearing. The center-aligning bearing is installed in the installation groove at one end of the left driving connecting rod. The other end of the left driving connecting rod is hinged to the first end of the triangular rocker arm, the second end of the triangular rocker arm is hinged to the horizontal blade assembly, and the third end of the triangular rocker arm is provided with a fixedly installed rotating shaft. A driving core shaft is passed through the second end of the triangular rocker arm, a needle bearing is provided on the outside of the driving core shaft, the needle bearing is embedded in the outer ring sleeve, the opening of the outer ring sleeve is in contact with the side wall of the second end of the triangular rocker arm, and a baffle, a baffle ring and an oil seal are provided at the opening of the outer ring sleeve.

2. A cutting knife driving device according to claim 1, characterized in that: The horizontal knife assembly includes a left horizontal knife assembly and a right horizontal knife assembly. The left horizontal knife assembly includes a left knife rod. A connecting piece is installed at the left end of the left knife rod. A plurality of blades are arranged on the left knife rod. The connecting piece is used for the second end of the triangular rocker arm. The right horizontal knife assembly has the same structure as the left horizontal knife assembly and is arranged in a mirror image.

3. A cutting knife driving device according to claim 2, characterized in that: The transmission mechanism includes a transmission shaft, and transmission sprocket 1 and transmission sprocket 2 are respectively provided at both ends of the transmission shaft. The transmission sprocket 1 is connected with the transmission sprocket 3, and the transmission sprocket 3 is located at the right end of the left drive shaft. The transmission sprocket 2 is connected with the transmission sprocket 4, and the transmission sprocket 4 is located on the outside of the eccentric sprocket welded on the right drive shaft of the right drive structure.

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