阅读说明：本技术 一种无螺盘立旋粉垄耕具 (Spiral-disk-free vertical rotation powder ridge tillage tool ) 是由 韦本辉 韦元波 张宪 宁秀呈 宋丽梅 于 2019-11-01 设计创作，主要内容包括：本发明涉及耕地机具的技术领域,具体是一种无螺盘立旋粉垄耕具,包括车架和粉垄传动箱,车架底部安装有行走轮,车架上安装有驾驶室和动力装置；粉垄传动箱安装在车架后部,粉垄传动箱上安装有铰接臂、液压马达和铰接座,铰接臂通过液压缸与车架连接,铰接座也与车架连接；粉垄传动箱底部安装有由液压马达驱动的无螺盘立式旋耕刀,无螺盘立式旋耕刀与设置在粉垄传动箱底部的连接座连接。本无螺盘立旋粉垄耕具耕作效率高,能耗低。(The invention relates to the technical field of tillage machines, in particular to a spiral-disk-free vertical-rotation powder ridge tillage machine which comprises a frame and a powder ridge transmission box, wherein walking wheels are arranged at the bottom of the frame, and a cab and a power device are arranged on the frame; the powder ridge transmission box is arranged at the rear part of the frame, a hinged arm, a hydraulic motor and a hinged seat are arranged on the powder ridge transmission box, the hinged arm is connected with the frame through a hydraulic cylinder, and the hinged seat is also connected with the frame; the bottom of the ridge smashing transmission box is provided with a vertical rotary blade without a screw disk, which is driven by a hydraulic motor, and the vertical rotary blade without the screw disk is connected with a connecting seat arranged at the bottom of the ridge smashing transmission box. The spiral-disk-free vertical rotation powder ridge tillage tool has high tillage efficiency and low energy consumption.)

1. A spiral-disk-free vertical-rotation powder ridge tillage tool comprises a frame (4) and a powder ridge transmission case (10), wherein walking wheels (1) are installed at the bottom of the frame (4), and a cab (2) and a power device (3) are installed on the frame (4); the powder ridge transmission box (10) is installed at the rear part of the frame (4), an articulated arm (6), a hydraulic motor (9) and an articulated seat (14) are installed on the powder ridge transmission box (10), the articulated arm (6) is connected with the frame (4) through a hydraulic cylinder (5), and the articulated seat (14) is also connected with the frame (4); the method is characterized in that: the bottom of the ridge smashing transmission box (10) is provided with a vertical rotary blade (13) without a spiral disk driven by a hydraulic motor (9), and the vertical rotary blade (13) without a spiral disk is connected with a connecting seat (15) arranged at the bottom of the ridge smashing transmission box (10).

2. The utility model provides a no spiral shell dish immediately revolves powder ridge ploughing utensil, includes tractor (33) and powder ridge transmission case (10), and the rear portion at tractor (33), its characterized in that are installed in powder ridge transmission case (10): the upper part of the middle of the powder ridge transmission case (10) is provided with an articulated arm (6), two sides of the powder ridge transmission case (10) are respectively provided with an articulated seat (14), the articulated arm (6) is connected with a middle cantilever (35) of a tractor (33), and the articulated seat (14) is connected with a side cantilever (32) of the tractor (33); the bottom of the ridge smashing transmission box (10) is provided with a vertical rotary blade (13) without a screw disc, and the vertical rotary blade (13) without the screw disc is connected with a connecting seat (15) arranged at the bottom of the ridge smashing transmission box (10); the powder ridge transmission case (10) is also connected with a transmission case of a tractor (33) through a connecting shaft (34), and the power of the tractor (33) is transmitted into the powder ridge transmission case (10) and is used for driving the vertical rotary tillage cutter (13) without a spiral disc to work.

3. The screwless pan-type ridge-standing powder tillage tool as claimed in claim 1 or 2, wherein: vertical rotary blade (13) of no spiral shell dish include many No. I rotary blade group (16) and No. II rotary blade group (17), many No. I rotary blade group (16) and No. II rotary blade group (17) equipartition in turn install in powder ridge transmission case (10) bottom, the rotation of No. I rotary blade group (16) and No. II rotary blade group (17) is opposite.

4. The screwless pan-type ridge and powder cultivation tool according to claim 3, wherein: the No. I screwless rotary blade set (16) comprises a No. I rotary blade (19), a short rotary blade (30) convenient for cutting into soil is arranged at the bottom end of a blade bar (25) of the No. I rotary blade (19), a hexagonal connector (23) convenient for connecting and installing the rotary blade set is arranged at the top end of the blade bar, and a bolt hole (24) is formed in the hexagonal connector (23); the cutter bar (25) is provided with a plurality of cutter seats (27), and the cutter seats (27) are spirally arranged on the cutter bar (25) in an ascending way; a No. I knife (28) is arranged on the knife holder (27) through a bolt (26); the No. I knife (28) is L-shaped.

5. The screwless pan-type ridge and powder cultivation tool according to claim 4, wherein: the No. I rotary tillage cutter group (16) also comprises a No. I rotary tillage lengthening cutter (18), a hexagonal connecting hole (29) used for being connected with a hexagonal connector (23) of the No. I rotary tillage lengthening cutter (18) is formed in the bottom end of a cutter bar (25) of the No. I rotary tillage lengthening cutter (18), the hexagonal connector (23) convenient for the connection and installation of the rotary tillage cutter group is arranged at the top end of the cutter bar, and a bolt hole (24) is formed in the hexagonal connector (23); the cutter bar (25) is provided with a plurality of cutter seats (27), and the cutter seats (27) are spirally arranged on the cutter bar (25) in an ascending way; a No. I knife (28) is installed on the knife holder (27) through a bolt (26).

6. The screwless pan-type ridge and powder cultivation tool according to claim 3, wherein: the No. II rotary blade group (17) comprises a No. II rotary blade (22), a short rotary blade (30) convenient for cutting into soil is arranged at the bottom end of a blade bar (25) of the No. II rotary blade (22), a hexagonal connector (23) convenient for connecting and installing the rotary blade group is arranged at the top end of the short rotary blade, and a bolt hole (24) is formed in the hexagonal connector (23); the cutter bar (25) is provided with a plurality of cutter seats (27), and the cutter seats (27) are spirally arranged on the cutter bar (25) in an ascending way; a No. II cutter (31) is arranged on the cutter holder (27) through a bolt (26); the No. II knife (31) is in a mirror symmetry shape similar to an L shape.

7. The screwless pan-type ridge and powder cultivation tool as claimed in claim 6, wherein: the No. II rotary tillage cutter group (17) also comprises a No. II rotary tillage lengthening cutter (21), the bottom end of a cutter bar (25) of the No. II rotary tillage lengthening cutter (21) is provided with a hexagonal connecting hole (29) for connecting with a hexagonal connector (23) of the No. II rotary tillage cutter (22), the top end of the cutter bar is provided with the hexagonal connector (23) convenient for connecting and installing the rotary tillage cutter group, and the hexagonal connector (23) is provided with a bolt hole (24); the cutter bar (25) is provided with a plurality of cutter seats (27), and the cutter seats (27) are spirally arranged on the cutter bar (25) in an ascending way; a No. II knife (31) is installed on the knife holder (27) through a bolt (26).

8. The screwless pan-type ridge-standing powder tillage tool as claimed in claim 1 or 2, wherein: the rear part of the ridge smashing transmission box (10) is provided with a furrow plough (12) through a furrow plough rod mounting seat (8) and a furrow plough rod (11), the position of the furrow plough is positioned at the lower part of the screw-disk-free vertical rotary ridge smashing plough tool during cultivation, and the deep ploughing and deep scarification of the soil layer are achieved after the screw-disk-free vertical rotary ridge smashing plough tool and the furrow plough smash soil.

9. The screwless pan-type ridge and powder cultivation tool as claimed in claim 8, wherein: the turnplow lever (11) is provided with a plurality of pin holes, and the turnplow lever (11) is arranged in the turnplow fixing pin shaft (7) in a vertically adjustable manner through the turnplow fixing pin shaft (7).

Technical Field

The invention relates to the technical field of tillage machines, in particular to a spiral-disk-free vertical-rotation powder ridge tillage machine.

Background

In the civilization history of thousands of years in China, agriculture occupies an important position in the whole production. With the development of social economy, in order to increase the yield and improve the labor productivity, the labor people invent and create various agricultural production tools. In the field of tillage, the prior farming methods include deep tillage, shallow tillage, no tillage and combination of deep tillage and shallow tillage, and the farming is labor-consuming and hard because of being limited to production tools before modern mechanization appears, so that shallow tillage and no tillage are main means, and the quality of land is gradually degraded due to excessively frequent cultivation in the long year, soil hardening is serious, permeability is reduced, water and fertilizer conservation and energy storage capacity is reduced, and the requirement of high quality and high yield of shallow tillage or no-tillage crops cannot be met. Since the appearance of tractors and matched agricultural implements, deep ploughing is easy to realize, and people also pay attention to the combination of deep ploughing, shallow ploughing and no ploughing so as to meet the requirements of various plant growth.

In recent years, the emergence of the ridge smashing technology changes the existing backward cultivation mode, the cultivated layer is constructed by doubling again, a good farmland 'cultivated land reservoir' and a soil aerobic and oxygen increasing mechanism are formed, natural resources such as soil, natural rainfall, soil oxygen and the like are used in a friendly and efficient manner, the crop naturality is promoted to be greatly improved, the unit yield and the product quality are improved, and the modern agriculture development is light and simple cultivation, so that the grain, water resource, ecological safety and national health requirements of China are met. The ridge smashing technology is used for realizing ultra-deep ploughing and activating various land resources, repairing soil, increasing and storing natural rainfall and improving ecological huge science and application potential, green ecological big pattern agriculture can be constructed, and hopefully, the agriculture in China is changed from single cultivated land agriculture to green super agriculture patterns such as cultivated land, saline-alkali land, degraded grassland, marginal land, river water and offshore water, the agricultural products such as grains, meat, milk and fish can be produced in a high quality mode, more natural rainfall is stored and reserved on land to be available water resources, the overall breaking of the existing agricultural resources is not matched with the development requirements of population, the grain safety is guaranteed, the agricultural production mode has to pursue high yield or ultra-high yield, chemical fertilizers are piled and used more pesticides, and the problems that soil, water and air are easy to be polluted are caused. Therefore, the ridge smashing technology has great effect in the popularization and the application in various parts of China. The ridge smashing technology is rarely applied to ridge smashing ploughing tools, and some ridge smashing ploughing tools are also reported in published documents, such as:

1. chinese patent: the utility model provides a hydraulic pressure dark rotary tillage whitewashed ridge machine, application number: 201410430245.8, filing date: 2014.08.28, Applicant: wiegand wave, address: 530007 Tokyan 174 Keyuan district, Dong Lu of West-village-district university, Nanning City of Guangxi Zhuang nationality, inventor: wieganwei, lie-inscription, webevine, li-duckweed, abstract: the invention discloses a hydraulic deep rotary tillage ridge smashing machine which comprises a travelling device, a cab, an engine, a ridge smashing machine and a rack, wherein the cab and the engine are arranged on the rack, the travelling device is arranged at the lower part of the rack and is driven by the engine, a circular disc cutter driven by a hydraulic motor is arranged at the front lower part of the rack, and the rear part of the rack is connected with the ridge smashing machine through a hinged seat and a hydraulic cylinder support. The hydraulic deep rotary tillage ridge smashing machine disclosed by the invention is stable in walking, simple and practical, integrates soil deep loosening, surface loosening and soil block smashing into a whole, is deep in soil drilling and high in soil smashing efficiency, can increase the oxygen content in the deep soil, is beneficial to the growth of crop roots and improves the crop yield.

2. Chinese patent: grind formula deep ploughing powder ridge multi-functional machinery soon, application number: 201010270614.3, filing date: 2010.09.03, Applicant: webmaster, address: 530007 Guangxi agricultural science institute, east road 174, university of Nanning city, Guangxi Zhuang nationality, inventor: weberkini, lie inscription, celeriac, wiyuan wave, lililizard, abstract: a rotary grinding type multifunctional machine for deep ploughing and pulverizing ridges is composed of a tractor as supporter, a hydraulic unit installed to the back frame of said tractor, a rotary grinding-bit unit with one or more bit axles, spiral blades on said bit axles, and angle teeth on said spiral blades, and a unit for preventing straw from being wound, a hydraulic unit for driving said rotary grinding-bit to move up and down, a speed-varying box for driving said rotary grinding-bit via connecting rod and gear, and a rotary grinding-bit unit consisting of a U-shaped slot under the soil to loosen the soil layer and improve soil quality, the disease and weed are relatively reduced, and the crop is easy to obtain high and stable yield.

3. Chinese patent: the utility model provides a deep ploughing is loose powder ridge device deeply, application number: 201510007147.8, filing date: 2015.01.07, Applicant: li yangming, address: 537000 Guangxi Zhuang autonomous area Yulin City Yuzhou district No. 398, inventor: plum yangming, abstract: the invention provides a deep-ploughing, deep-loosening and powder-ridge device, which aims to solve the problems of low walking speed, low efficiency and the like of a powder-ridge machine. The ridge smashing machine using the ridge smashing drill bit is high in ploughing speed, better in soil smashing and natural ridge forming effects, capable of meeting the use requirements of agricultural production and capable of achieving large-scale production.

4. Chinese patent: the utility model provides a whitewashed ridge device of powder ridge machine is ploughed to pine, application number: 201510328328.0, filing date: 2015.06.15, Applicant: lie, address: 537500 Guangxi Zhuang autonomous region Yulin City county economic development area, inventor: deep plum, abstract: the invention discloses a ridge smashing device of a ridge smashing machine for loose tillage, which comprises a ridge smashing box, wherein the ridge smashing box comprises a bottom plate, side plates and a top plate, a lower bearing seat is arranged on the bottom plate, a rib plate is welded between the lower bearing seats, a lubricating oil channel is arranged between the rib plate and the bottom plate, an upper bearing seat is arranged on the top plate, and the lower bearing seat is longer than the upper bearing seat. The structure of the invention can improve the strength of the lower bearing seat, facilitate the installation of a plurality of bearings in a place with large stress, and install a few bearings in a place with small stress, so as to improve the rigidity and the transmission stability of the transmission shaft and reduce the cost; the rib plates are convenient to weld, smooth flowing of lubricating oil in the powder ridge box is guaranteed, and the lubricating effect is improved.

The practical application research shows that the deep loosening plough is erected behind the spiral powder ridge tillage tool, the spiral powder ridge tillage tool is arranged at the corresponding bottom of the spiral powder ridge tillage tool during operation, the deep loosening plough loosens soil for soil at the lower part of a tillage layer while the powder ridge cutter grinds ridges on the tillage layer, deep loosening of a non-disordered soil layer is realized, a soil reservoir is constructed at the bottom layer, and the growth of crops is more facilitated.

Disclosure of Invention

The invention aims to provide a spiral-disk-free vertical-rotation powder ridge tillage tool, and a powder ridge rotary blade of the tillage tool is free of a spiral blade disk, so that the tillage efficiency is high, and the energy consumption is low.

In order to realize the purpose of the invention, the technical scheme is as follows:

a spiral-disk-free vertical-rotation powder ridge tillage tool comprises a frame and a powder ridge transmission case, wherein walking wheels are mounted at the bottom of the frame, and a cab and a power device are mounted on the frame; the powder ridge transmission box is arranged at the rear part of the frame, a hinged arm, a hydraulic motor and a hinged seat are arranged on the powder ridge transmission box, the hinged arm is connected with the frame through a hydraulic cylinder, and the hinged seat is also connected with the frame; the shaft of the hydraulic cylinder stretches to realize the swing of the ridge smashing transmission box, so as to drive the vertical rotary tillage cutter without the spiral disk to swing to stretch into soil or leave the soil; the bottom of the ridge smashing transmission box is provided with a vertical rotary blade without a screw disk, which is driven by a hydraulic motor, and the vertical rotary blade without the screw disk is connected with a connecting seat arranged at the bottom of the ridge smashing transmission box.

Preferably: vertical rotary blade of no spiral shell dish include many No. I rotary blade group and No. II rotary blade group, many No. I rotary blade group and No. II rotary blade group alternate equipartition and install in powder ridge transmission bottom of the case portion, the rotation of No. I rotary blade group and No. II rotary blade group is opposite.

Preferably: the rotary tillage cutter group I comprises a rotary tillage cutter group I, a short rotary cutter convenient for cutting into soil is arranged at the bottom end of a cutter rod of the rotary tillage cutter group I, a hexagonal connector convenient for connecting and mounting the rotary tillage cutter group is arranged at the top end of the cutter rod, and a bolt hole is formed in the hexagonal connector; the cutter bar is provided with a plurality of cutter seats which are spirally arranged on the cutter bar in an ascending way; the cutter holder is provided with a No. I cutter through a bolt; the No. I knife is similar to an L shape. The structure of the short rotary cutter can be selected optionally, and the rotary cutter set I can be used for conveniently cutting into soil when working.

Preferably: the rotary tillage cutter group I also comprises a rotary tillage lengthening cutter I, a hexagonal connecting hole for connecting with a hexagonal connector of the rotary tillage cutter I is formed in the bottom end of a cutter rod of the rotary tillage lengthening cutter I, a hexagonal connector convenient for connecting and mounting the rotary tillage cutter group is arranged at the top end of the cutter rod, and a bolt hole is formed in the hexagonal connector; the cutter bar is provided with a plurality of cutter seats which are spirally arranged on the cutter bar in an ascending way; a No. I knife is installed on the knife holder through a bolt. No. I rotary tillage extension sword can form for the concatenation of a plurality of No. I rotary tillage extension sword, is convenient for be different length with No. I rotary tillage knife tackle extension, realizes the farming of the different degree of depth.

Preferably: the rotary tillage cutter group II comprises a rotary tillage cutter group II, a short rotary cutter convenient for cutting into soil is arranged at the bottom end of a cutter rod of the rotary tillage cutter group II, a hexagonal connector convenient for connecting and mounting the rotary tillage cutter group is arranged at the top end of the cutter rod, and a bolt hole is formed in the hexagonal connector; the cutter bar is provided with a plurality of cutter seats which are spirally arranged on the cutter bar in an ascending way; a No. II cutter is arranged on the cutter holder through a bolt; the No. II knife is in a mirror symmetry shape similar to an L shape.

Preferably: the rotary tillage cutter group II also comprises a rotary tillage lengthening cutter group II, the bottom end of a cutter rod of the rotary tillage lengthening cutter group II is provided with a hexagonal connecting hole for connecting with a hexagonal connector of the rotary tillage cutter group II, the top end of the cutter rod is provided with a hexagonal connector convenient for connecting and mounting the rotary tillage cutter group II, and the hexagonal connector is provided with a bolt hole; the cutter bar is provided with a plurality of cutter seats which are spirally arranged on the cutter bar in an ascending way; a No. II cutter is installed on the cutter holder through a bolt. No. II rotary tillage extension blades can be formed by splicing a plurality of No. II rotary tillage extension blades, and No. II rotary tillage blade sets are conveniently lengthened to different lengths, so that different depths of tillage are realized.

Preferably: the rear part of the powder ridge transmission case is provided with the furrow plough through the furrow plough rod mounting seat and the furrow plough rod, the furrow plough loosens the soil at the lower part of the powder ridge cultivation when the rotary tillage cutter is used for powder ridge cultivation, the deep ploughing and deep scarification of a disordered soil layer are realized, the soil reservoir is constructed at the bottom layer, and the growth of crops is more favorable for constructing the good soil reservoir at the bottom layer. The share plough rod mounting seat can be arranged on the vehicle frame or the powder ridge transmission box, one end of the share plough rod is fixed with the share plough, and the other end of the share plough rod is arranged on the share plough rod mounting seat. The powder ridge tillage depth and the furrow plough loosening depth can be adjusted according to planting requirements and soil conditions, the furrow plough loosening depth is deeper than the powder ridge tillage depth, the powder ridge tillage depth is generally selected to be about 30 centimeters, the furrow plough loosening depth is about 30 centimeters at the lower part of the furrow plough loosening depth, and the total tillage depth reaches about 60 centimeters.

Preferably: the turnplow lever is provided with a plurality of pin holes and is arranged in the turnplow fixing pin shaft in an up-and-down adjustable manner through the turnplow fixing pin shaft.

The spiral-disk-free vertical-rotation powder ridge tillage tool has another structure, is driven by a tractor, selects tractors with different horsepower according to different requirements, utilizes the existing mature tractor to drive to work, does not need to add an additional power device, and comprises the tractor and a powder ridge transmission case, wherein the powder ridge transmission case is arranged at the rear part of the tractor, the upper part of the middle of the powder ridge transmission case is provided with a hinged arm, two sides of the powder ridge transmission case are respectively provided with a hinged seat, the hinged arm is connected with a middle cantilever of the tractor, and the hinged seat is connected with a side cantilever of the tractor; the bottom of the ridge smashing transmission box is provided with a vertical rotary blade without a screw disc, and the vertical rotary blade without the screw disc is connected with a connecting seat arranged at the bottom of the ridge smashing transmission box; the powder ridge transmission case is also connected with a transmission case of the tractor through a connecting shaft, and transmits the power of the tractor to the powder ridge transmission case for driving the vertical rotary tillage cutter without the spiral plate to work.

This no spiral shell dish immediately revolves powder ridge ploughing tool's advantage:

1. the spiral disk-free vertical rotation ridge tillage tool is ingenious in arrangement, and the spiral disk-free vertical rotary blades are used for tillage, so that the rotary blades cut soil quickly, the soil is drained quickly after soil is cut, the resistance is reduced, and the oil consumption is reduced; under the premise of the same traction horsepower and cultivation depth, the cultivation efficiency is improved by more than 25% compared with the current spiral disc (spiral blade) type ridge cultivation tool, and the oil consumption is reduced by more than 10%.

2. The vertical rotary blade of the spiral-disk-free vertical rotary powder ridge tillage tool is divided into a rotary blade group I and a rotary blade group II, a plurality of rotary blade groups I and rotary blade groups II are alternately and uniformly distributed at the bottom of a powder ridge transmission box, and the rotary directions of the rotary blade groups I and the rotary blade groups II are opposite; no. I rotary blade group can reduce the hourglass between the rotary blade group with No. II rotary blade group to ploughing to the contrary, and the earth of just ploughing out is more garrulous, and the granularity is little.

3. The rotary blade of the vertical rotary powder ridge tillage tool without the spiral disk can adopt a combination form of the rotary blade and the rotary tillage lengthening blade, and the hexagonal connector of the rotary blade is inserted into the hexagonal connecting hole of the rotary tillage lengthening blade to insert the mounting pin, so that the rotary blade can be quickly lengthened to different lengths, and tillage with different tillage depths is realized.

Drawings

FIG. 1 is a schematic diagram of the structure of the spiral-disk-free vertical-rotation powder ridge tillage tool;

FIG. 2 is a schematic view of the arrangement of the powder ridge box and the rotary blade in FIG. 1;

FIG. 3 is a schematic view of the rotary blade assembly of FIG. 2;

FIG. 4 is a schematic structural view of the rotary blade set II shown in FIG. 2;

FIG. 5 is a schematic structural view of the No. I rotary tillage lengthening knife in FIG. 3;

FIG. 6 is a top view of FIG. 5;

FIG. 7 is a schematic structural view of No. I rotary blade in FIG. 3;

FIG. 8 is a top view of FIG. 7;

FIG. 9 is a schematic structural view of the rotary tillage lengthening blade II in FIG. 4;

FIG. 10 is a top view of FIG. 9;

FIG. 11 is a schematic view of the structure of rotary blade No. II in FIG. 4;

FIG. 12 is a top view of FIG. 11;

FIG. 13 is a schematic diagram of the structure of a tractor-driven spiral-disk-free vertical-rotation powder ridge tillage tool;

FIG. 14 is a schematic view of the mounting arrangement of the crushing and ridging box and the rotary blades in FIG. 13;

the part names of the sequence numbers in the figure are:

1. road wheels, 2, a cab, 3, a power device, 4, a frame, 5, a hydraulic cylinder, 6, an articulated arm, 7, a furrow plough fixing pin shaft, 8, a furrow plough rod mounting seat, 9, a hydraulic motor, 10, a ridge transmission box, 11, a furrow plough rod, 12, a furrow plough, 13, a vertical rotary tillage cutter without a screw disk, 14, an articulated seat, 15, a connecting seat, 16, a rotary tillage cutter group I, 17, a rotary tillage cutter group II, 18, a rotary tillage lengthening cutter I, 19, a rotary tillage cutter I, 20, a mounting pin, 21, a rotary tillage lengthening cutter II, 22, a rotary tillage cutter II, 23, a hexagonal connector, 24, a bolt hole, 25, a cutter rod, 26, a bolt, 27, a cutter seat, 28, a cutter blade I, 29, a hexagonal connecting hole, 30, a short rotary cutter, 31, a cutter blade II, 32, a side cantilever, 33, a tractor, 34, a connecting shaft, 35 and a middle cantilever.

Detailed Description

The present application will be described in further detail with reference to the accompanying drawings and examples.