Swing ring box device

Abstract

The utility model discloses a swing ring box device which comprises a box body, a swing shaft and a swing arm, the swing shaft comprises a front section, a middle section and a rear section, the rear section is a swing ring of an annular structure, a rotating shaft is arranged in the center of the tail end of the swing ring, the swing shaft is installed in the box body, the middle section and the rear end of the swing shaft are located in the box body, the front section of the swing shaft extends out of the box body, and a groove is formed in the bottom face in the box body. The rotating shaft is installed in the groove through a bearing, the swing ring is installed on the swing ring base through a bearing, the front section of the swing shaft is sleeved with the upper section of the swing arm, the swing ring base is connected with a transmission structure, the transmission structure is used for driving the swing ring shaft to rotate, and a cutter assembly is arranged at the lower end of the swing arm.

Description

Technical Field

[0001] The utility model relates to a swing ring box device. Background Art

[0002] The swing ring box is a device used to drive the cutting blade of the harvester's header. It consists of a box body, a swing shaft, an intermediate drive shaft, an eccentric sleeve, a bearing cover, a bearing, an oil seal, etc. The reciprocating motion of the cutting blade is achieved by converting the circular motion of the intermediate drive shaft into the arc reciprocating motion of the swing shaft.

[0003] The swing shaft inside the swing ring box currently used in harvesters is basically a "herringbone" swing fork structure, which is difficult to process, has high requirements, and is prone to deformation and failure. When the existing swing ring box converts circular motion into arc reciprocating motion of the swing shaft, it will cause resonance of the whole machine when running at high speed. Utility Model Content

[0004] The purpose of the utility model is to solve the above deficiencies in the prior art and provide a swing ring box device.

[0005] A swing ring box device includes a box body, a swing shaft, and a swing arm. The swing shaft includes a front section, a middle section, and a rear section. The rear section is a swing ring with an annular structure. A rotating shaft is provided at the center of the tail end of the swing ring. The swing shaft is installed in the box body. The middle section and the rear end of the swing shaft are located in the box body, and the front section thereof extends out of the box body. The bottom of the box body is connected to the box cover by bolts. A groove is provided on the bottom surface of the box cover facing the inside of the box body. The rotating shaft is installed in the groove through a bearing. The swing ring is installed on the swing ring seat through a bearing. The upper section of the swing arm is sleeved on the front section of the swing shaft. The swing ring seat is connected to a transmission structure. The transmission structure is used to drive the swing ring shaft to rotate. A cutter assembly is provided at the lower end of the swing arm.

[0006] In order to balance the centrifugal force generated when the swing shaft is working and prevent resonance, a counterweight is provided at the upper end of the swing arm.

[0007] In order to facilitate the control of the drive, the transmission structure includes a drive shaft and a drive pulley. The drive pulley is sleeved on one end of the drive shaft. An eccentric sleeve is fixedly connected to the drive shaft. The eccentric sleeve is connected to the drive bearing, and the drive bearing is connected to the swing ring seat.

[0008] In order to ensure a stable connection, the eccentric sleeve and the drive shaft are connected through a spline structure.

[0009] In order to facilitate disassembly and assembly, the counterweight is connected to the swing arm through a bolt structure.

[0010] Beneficial effects: Compared with the prior art, the utility model adopts an annular swing shaft structure, improves the original single-sided "herringbone" swing fork mechanism into an annular structure, and provides a rotating shaft at the middle rotating position. The overall structure is more stable and convenient for processing. The double turning point structure is more convenient for positioning during processing, and also prevents deformation and failure during heat treatment and use. A counterweight block for balancing vibration is added at the swing arm position. When the swing arm drives the cutting knife to reciprocate left and right, the counterweight block and the cutting knife move toward and oppositely at the same time, balancing the left and right impulses and effectively reducing resonance. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a cross-sectional view of the swing ring box device at one angle;

[0012] Figure 2 It is a cross-sectional view of the swing ring box device from another angle;

[0013] Figure 3 It is a working schematic diagram of the swing ring box device;

[0014] In the figure, 1, counterweight, 2, swing arm, 3, swing shaft, 4, swing ring seat, 5, swing ring, 6, box body, 7, rotary shaft, 8, bearing, 9, drive bearing, 10, eccentric sleeve, 11, drive shaft, 12, drive pulley, 13, cutter assembly, 14, box cover. DETAILED DESCRIPTION

[0015] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0016] like Figure 1-3 As shown, a counterweight 1, a swing arm 2, a swing shaft 3, a swing ring seat 4, a swing ring 5, a box body 6, a rotary shaft 7, a bearing 8, a drive bearing 9, an eccentric sleeve 10, a drive shaft 11, a drive pulley 12, a cutter assembly 13, and a box cover 14;

[0017] A swing ring box device includes a box body 6, a swing shaft 3, and a swing arm 2. The swing shaft 3 includes a front section, a middle section, and a rear section. The rear section is a swing ring 5 of an annular structure. A rotating shaft 7 is provided at the center of the tail end of the swing ring 5. The swing shaft 3 is installed in the box body 6. The middle section and the rear end of the swing shaft 3 are located in the box body 6, and the front section thereof extends out of the box body 6. The bottom of the box body 6 is connected to a box cover 14 by bolts. A groove is provided on the bottom surface of the box cover 14 facing the inside of the box body. The swing ring 5 is installed on a swing ring seat 4 by a bearing 8. The upper section of the swing arm 2 is sleeved on the front section of the swing shaft 3. The swing ring seat 4 is connected to a transmission structure. The transmission structure is used to drive the swing ring 5 axis to rotate. A cutter assembly 13 is provided at the lower end of the swing arm 2.

[0018] In this embodiment, a counterweight 1 is disposed at the upper end of the swing arm 2 .

[0019] In this embodiment, the transmission structure includes a drive shaft 11 and a drive pulley 12. The drive pulley 12 is sleeved on one end of the drive shaft 11. An eccentric sleeve 10 is fixedly connected to the drive shaft 11. The eccentric sleeve 10 is connected to a drive bearing 9, and the drive bearing 9 is connected to a swing ring seat 4.

[0020] In this embodiment, the eccentric sleeve 10 and the driving shaft 11 are connected via a spline structure.

[0021] In this embodiment, the counterweight 1 is connected to the swing arm 2 via a bolt structure.

[0022] Specifically, during operation, the serial number driving pulley 12 drives the driving shaft 11 through the key pin, the driving shaft 11 drives the serial number 11 eccentric sleeve 10 to rotate, the eccentric sleeve 10 drives the swing ring seat 4 to swing back and forth through the driving bearing 9, the swing ring seat 4 drives the swing shaft 3 to rotate back and forth through the bearing 8, the swing shaft 3 drives the swing arm 2 to rotate back and forth through the key pin, and then drives the swing arm 2 to rotate back and forth.

[0023] Then the swing arm 2 drives the cutter assembly 13 to reciprocate. During the cutting movement during the practice harvesting operation, the reciprocating impulse of the cutter during high-speed movement will cause resonance of the whole machine. A counterweight 1 is provided on the other side of the swing arm 2 relative to the cutter. The counterweight 1 is connected to the swing arm 2 by fixing bolts, spring washers and nuts. During the rotational movement, the counterweight 1 moves toward and opposite to the cutter assembly at the same frequency and speed to offset the left and right impulses of the cutter, thereby effectively reducing the resonance of the whole machine.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A swing ring box device, characterized in that: It includes a box body, a swing shaft and a swing arm. The swing shaft includes a front section, a middle section and a rear section. The rear section is a swing ring with an annular structure. A rotating shaft is provided at the center of the tail end of the swing ring. The swing shaft is installed in the box body. The middle section and the rear end of the swing shaft are located in the box body, and the front section thereof protrudes out of the box body. The bottom of the box body is connected to the box cover by bolts. A groove is provided on the bottom surface of the box cover facing the inside of the box body. The rotating shaft is installed in the groove through a bearing. The swing ring is installed on the swing ring seat through a bearing. The upper section of the swing arm is sleeved on the front section of the swing shaft. The swing ring seat is connected to a transmission structure. The transmission structure is used to drive the swing ring shaft to rotate. A cutter assembly is provided at the lower end of the swing arm.

2. A swing ring box device according to claim 1, characterized in that: A counterweight is provided at the upper end of the swing arm.

3. A swing ring box device according to claim 1, characterized in that: The transmission structure comprises a driving shaft and a driving pulley. The driving pulley is sleeved on one end of the driving shaft. An eccentric sleeve is fixedly connected to the driving shaft. The eccentric sleeve is connected to a driving bearing, and the driving bearing is connected to a swing ring seat.

4. A swing ring box device according to claim 3, characterized in that: The eccentric sleeve is connected to the driving shaft via a spline structure.

5. A swing ring box device according to claim 2, characterized in that: The counterweight block is connected to the swing arm via a bolt structure.

Images