阅读说明：本技术 一种双动刀往复式切割装置 (Reciprocating type cutting device of double acting sword ) 是由 刘志刚 刘兴砚 隋庚锦 裴承慧 马中祥 李国良 冀振 于 2018-07-17 设计创作，主要内容包括：本发明公开了一种双动刀往复式切割装置,属于农业机械领域,它包括液压马达、马达固定架、法兰盘、箱体、箱盖、传动机构、轴承、左滑掌、双动刀切割器、右滑掌以及防护板。所述主动轴是一根台阶轴；所述偏心轮有两个,分别安装在所述主动轴台阶的两侧,与主动轴通过键连接；所述偏心轮上分别安装带座轴承；所述带座轴承底座开有通孔；所述从动轴有两根,其尾端与连接架活动连接；所述连接架分别与所述带座轴承底座的通孔活动连接；所述箱体前侧竖直方向开有两个通孔；所述轴承安放在所述箱体前侧竖直方向的两个通孔处。本装置结构简单紧凑,工作可靠,切割牧草等作物时可以改善动刀片受力不均的状况,提高切割器使用寿命。(The invention discloses a double-movable-knife reciprocating cutting device, which belongs to the field of agricultural machinery and comprises a hydraulic motor, a motor fixing frame, a flange plate, a box body, a box cover, a transmission mechanism, a bearing, a left sliding palm, a double-movable-knife cutter, a right sliding palm and a protection plate. The driving shaft is a step shaft; the two eccentric wheels are respectively arranged on two sides of the step of the driving shaft and are in key connection with the driving shaft; bearings with seats are respectively arranged on the eccentric wheels; the base of the bearing with the seat is provided with a through hole; the two driven shafts are provided, and the tail ends of the two driven shafts are movably connected with the connecting frame; the connecting frames are respectively movably connected with the through holes of the base of the bearing with the seat; two through holes are formed in the front side of the box body in the vertical direction; the bearings are arranged at two through holes in the vertical direction at the front side of the box body. The device has simple and compact structure and reliable work, can improve the condition of uneven stress of the movable blade when cutting pasture and other crops, and prolongs the service life of the cutter.)

1. A double-moving-knife reciprocating cutting device comprises a hydraulic motor, a motor fixing frame, a flange plate, a box body, a box cover, a transmission mechanism (a driving shaft, an eccentric wheel, a bearing with a seat, a driven shaft and a connecting frame), a bearing, a left sliding palm, a double-moving-knife cutter (a knife bar, an upper blade, a lower blade, a handle, a knife beam, a supporting arm and a fixed-rail pressing plate), a right sliding palm and a protection plate, and is characterized in that the driving shaft is a step shaft; the two eccentric wheels are respectively installed on two sides of the driving shaft step in a 180-degree staggered manner and are in key connection with the driving shaft; bearings with seats are respectively arranged on the eccentric wheels; the base of the bearing with the seat is provided with a through hole; the two driven shafts are provided, and the tail ends of the two driven shafts are movably connected with the connecting frame; the connecting frame is respectively movably connected with the through holes of the base of the bearing with the seat.

2. The double-knife reciprocating cutting device of claim 1, wherein the front side of the box body is vertically provided with two through holes; the bearings are arranged at the two through holes in the vertical direction at the front side of the box body; the driving shaft penetrates through the middle of the bearing.

3. A double-action-knife reciprocating cutting device according to claim 1, characterised in that said number of upper blades is mounted on said knife bar at a certain pitch; the number of lower blades is mounted on the other blade bar at a different mounting spacing than the upper blades.

Technical Field

The invention relates to the field of agricultural machinery, in particular to a double-action-knife reciprocating type cutting device.

Background

In animal husbandry, cutting devices are not available for harvesting pasture and other crops. The cutting devices used in common use are mainly classified into two types, one is a rotary cutter and the other is a reciprocating cutter. The reciprocating cutting devices are widely used in the market at present, and the following two types of devices are mainly used: one is a reciprocating cutting device with a single moving knife, which mainly comprises a moving blade and a fixed blade. When working, the driving mechanism drives the moving blade to do reciprocating motion, and the fixed blade and the tongue protecting structure fixed on the fixed blade are used for transverse support to cut off the crops such as pasture. Because the movable blade has larger mass, the transmission mechanism needs to bear larger inertia force transmitted by the movable blade during reciprocating cutting, so that the cutting device is easy to vibrate, wear and the like; the other type is a double-knife reciprocating cutting device which mainly comprises two groups of movable blades, wherein the installation space between the two groups of movable blades is the same. When cutting the crop, two sets of moving blade simultaneous movement, thereby respectively with the same stroke, reciprocating motion is done to the opposite direction of motion simultaneously to the same speed to the crop cuts, and not only cutting speed is fast, and two sets of moving blade transmit the inertial force that transmission can offset partly each other when moving moreover for cutting device vibration reduces, has improved life.

Although the double-moving-blade reciprocating cutting device has the advantages, when two groups of double moving blades in the device move, crops can be cut simultaneously or crops can not be cut simultaneously, so that the stress fluctuation range of the moving blades is large, and the service life of the cutting tools is further influenced. In addition, for the transmission mechanism in the reciprocating cutting device, the following three types are common in the market: the crank connecting rod mechanism has simple structure and low cost, but occupies large space; the swing ring mechanism has compact structure, reliable work and high manufacturing cost; and thirdly, the planetary gear mechanism is compact in structure and small in vibration, but is high in cost and complex in structure. For the above reasons, there is a need to design a novel double-knife reciprocating cutting device, which has the advantages of simple structure, capability of providing reciprocating power, small stress fluctuation range of the movable blade, low cost, reliable operation and the like.

Disclosure of Invention

The invention aims to solve the problems and provides a transmission mechanism which has simple structure and low cost, can provide reciprocating power and has small stress fluctuation range of a movable blade. The technical scheme adopted by the invention for solving the problems is as follows:

a double-moving-knife reciprocating cutting device comprises a hydraulic motor, a motor fixing frame, a flange plate, a box body, a box cover, a transmission mechanism (a driving shaft, an eccentric wheel, a bearing with a seat, a driven shaft and a connecting frame), a bearing, a left sliding palm, a double-moving-knife cutter (a knife beam, a handle, an upper supporting arm, a fixed-rail pressing plate, an upper blade, a lower blade, a knife rod and a lower supporting arm), a right sliding palm and a protection plate. The driving shaft is a step shaft; the two eccentric wheels are respectively arranged on two sides of the step of the driving shaft and are in key connection with the driving shaft; bearings with seats are respectively arranged on the eccentric wheels; the base of the bearing with the seat is provided with a through hole; the two driven shafts are provided, and the tail ends of the two driven shafts are movably connected with the connecting frame; the connecting frames are respectively movably connected with the through holes of the base of the bearing with the seat; two through holes are formed in the front side of the box body in the vertical direction; the bearings are arranged at the two through holes in the vertical direction at the front side of the box body; the driving shaft penetrates through the middle of the bearing.

The double-moving-knife cutter comprises two cutter bars, an upper blade, a lower blade, a handle, a knife beam, a supporting arm and a fixed-orbit pressing plate, wherein a certain number of through holes are formed in each of the two cutter bars; the upper blades are arranged on the cutter bar at certain intervals; the number of lower blades is mounted on the other blade bar at a different mounting spacing than the upper blades.

The supporting arm is provided with an upper supporting arm and a lower supporting arm; one end of the upper supporting arm is movably connected with the knife beam, and the other end of the upper supporting arm is movably connected with the upper blade; one end of the lower support arm is movably connected with the knife beam, and the other end of the lower support arm is movably connected with the lower blade; the two handles are respectively connected with the cutter bar through bolts; the fixed rail pressing sheet is an L-shaped plate, a through hole is formed in the longer end of the fixed rail pressing sheet and connected with the knife beam through a bolt, and the other end of the fixed rail pressing sheet is in contact with the side faces of the knife bar and the handle. The left and right sliding palms are respectively arranged at two sides of the double-movable-knife cutter;

one end of the motor fixing frame is connected with the outer side of the box cover through a flange plate, and the other end of the motor fixing frame is connected with a connecting plate of the hydraulic motor through a bolt; the hydraulic motor is connected with the driving shaft through a flange plate; bearings are respectively arranged at two ends of the driving shaft and fixed on the inner wall of the box body; the protection plate is respectively movably connected with the bottom of the box body and the bottom of the knife beam.

Compared with the prior art, the pasture grass cutting machine has simpler structural design, can effectively provide reciprocating power, reduces the stress fluctuation range of the movable blade, prolongs the service life of the cutter, and further reduces the production cost of pasture grass.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the transmission of the present invention;

FIG. 3 is a schematic view of the construction of the seated bearing of the present invention;

FIG. 4 is a schematic view showing the construction of the driving shaft of the present invention;

FIG. 5 is a schematic structural view of a driven shaft of the present invention;

FIG. 6 is a top view of the double action knife cutter of the present invention;

in the figure: 1. the device comprises a box cover, 2, a box body, 3, a driving shaft, 301, an eccentric wheel, 302, a bearing with a seat, 4, a driven shaft, 5, a knife beam, 6, a handle, 7, an upper supporting arm, 8, a fixed rail pressing plate, 9, an upper blade, 10, a lower blade, 11, a knife rod, 12, a lower supporting arm, 13, a right sliding palm, 14, a left sliding palm, 15, a hydraulic motor, 16, a motor fixing frame, 17, a flange plate, 18, a protection plate 19 and a connecting frame

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, 2, 3, 4 and 5, the double-knife reciprocating cutting device according to the present invention includes a hydraulic motor 15, a motor fixing frame 16, a flange 17, a box body 2, a box cover 1, a transmission mechanism (a driving shaft 3, an eccentric 301, a bearing 302 with a seat, a driven shaft 4, a connecting frame 19), a bearing 401, a left sliding palm 13, a double-knife cutter (a knife beam 5, a handle 6, an upper supporting arm 7, a fixed-orbit pressing plate 8, an upper knife 9, a lower knife 10, a knife bar 11, a lower supporting arm 12), a right sliding palm 14 and a protection plate 18. The driving shaft 3 is a step shaft; the two eccentric wheels 301 are respectively installed on two sides of the step of the driving shaft 3 in a 180-degree staggered manner and connected with the driving shaft 3 through a spline; bearings 302 with seats are respectively arranged on the eccentric wheels 301; a through hole is formed in the base of the bearing with a seat 3; two driven shafts 4 are provided, and the tail ends of the two driven shafts are movably connected with a connecting frame 19; the connecting frame 19 is respectively movably connected with the through holes of the base of the bearing with seat 302; two through holes are formed in the front side of the box body 2 in the vertical direction; the bearings 401 are placed at two through holes in the vertical direction at the front side of the box body 2; the driving shaft 3 passes through the middle of the bearing 401.

As shown in fig. 6, the double-knife cutter comprises two knife bars 11, an upper knife 9, a lower knife 10, a handle 6, a knife beam 5, supporting arms (7, 12) and a fixed-orbit pressing plate 8, wherein a certain number of through holes are formed in the two knife bars 11; the number of upper blades 9 is mounted on the cutter bar 11 at certain intervals; the number of lower knifes 10 is mounted on the other shank 11 at a different mounting distance than the upper knifes 9. The supporting arms (7, 12) are provided with an upper supporting arm 7 and a lower supporting arm 12 which are used as edge protectors; one end of the upper supporting arm 7 is movably connected with the knife beam 5, and the other end of the upper supporting arm is movably connected with the upper blade 9; one end of the lower supporting arm 12 is movably connected with the knife beam 5, and the other end of the lower supporting arm is movably connected with the lower blade 10; the fixed rail pressing sheet 8 is an L-shaped plate, one end of the fixed rail pressing sheet is provided with a through hole and is connected with the knife beam 5 through a bolt, and the other end of the fixed rail pressing sheet is in contact with the side faces of the knife bar 11 and the handle 6, so that the motion trail of the knife bar 11 is restrained, and the cutting quality and efficiency are improved. Two handles 6 are arranged and are respectively connected with the cutter bar 11 through bolts; the left and right sliding palms (14, 13) are respectively arranged at two sides of the double-moving knife cutter; one end of the motor fixing frame 16 is connected with the outer side of the box cover 1 through a flange 17, and the other end of the motor fixing frame is connected with a connecting plate of the hydraulic motor 15 through a bolt; the hydraulic motor 15 is connected with the driving shaft 3 through a flange 17; and bearings 401 are respectively arranged at two ends of the driving shaft 3 and fixed in the box body 2 and the box cover 1.

When the cutter reciprocating motion device works, the hydraulic motor 15 drives the driving shaft 3 to rotate and drives the eccentric wheels arranged on the driving shaft 3 to move, and the two eccentric wheels 301 are arranged in a 180-degree staggered mode, so that the bearing 301 with the seat arranged on the eccentric wheels can move forwards and backwards along with the movement of the eccentric wheels 301, and the movement is transmitted to the driven shaft 4 movably connected with the eccentric wheels to provide power for the reciprocating motion of the cutter. The power of the reciprocating motion is transmitted to the cutter through the driven shaft 4, and then the power is transmitted to the cutter bar 11, and under the action of the supporting arms (7, 12) and the orbit determination pressing plate 8, the upper blade 9 and the lower blade 10 which are arranged on the cutter bar 11 and have different installation intervals start to do reciprocating motion to cut crops. The bearing 401 mounted on its driven shaft 4 limits the radial displacement of the driven shaft 4.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.