CN114128485A - Telescopic cotton stalk pulling device and pulling method - Google Patents

Abstract

The invention relates to the technical field of cotton stalk pulling equipment, in particular to a telescopic cotton stalk pulling device and a pulling method. The power device in the pulling device is connected with the harvesting structure through a transmission shaft. The end part of the rotating shaft in the harvesting structure is connected with the frame. The active end of the rotating shaft is connected with the output end of the transmission shaft. The roller assemblies are arranged along the axial direction of the rotating shaft. The inside of the shell in the roller component is provided with a cavity for retracting the claw. The cavity is internally provided with a turntable of which the central line is offset from the axis of the rotating shaft. One end of the connecting part of the clamping jaw is hinged with the shell, and the other end of the connecting part of the clamping jaw is connected with the rotary table through a connecting rod. This device of pulling out utilizes power device drive pivot rotatory, and then drives the drum assembly rotatory, and the jack catch is concertina movement in the radial of carousel, and the cooperation pulls power equipment to the forward traction of frame, and the portion of snatching of jack catch is implemented to the cotton stalk and is pressed from both sides tightly and pull out, has effectively solved the remaining problem of root of cotton stalk in the cotton field, has further improved the efficiency of pulling out, has promoted the effect of the operation of pulling out.

Description

Telescopic cotton stalk pulling device and pulling method

Technical Field

The invention relates to the technical field of cotton stalk pulling equipment, in particular to a telescopic cotton stalk pulling device and a pulling method.

Background

Cotton has a long history in china as one of the essential crops for human life. Wherein Xinjiang is the main growing area of Chinese cotton. According to the investigation and display of the national cotton information network: in 2020, the seeding area of Xinjiang cotton reaches 3492.7 ten thousand mu, which accounts for 76.7% of the national cotton planting area, the yield reaches 482.2 ten thousand tons, and accounts for 85.8% of the national total yield. Cotton is picked to produce a large number of byproducts, and cotton stalks are one of the most important cotton byproducts. The cotton stalk is a renewable biomass resource, can be used as a fuel for combustion, can be processed into a feed for feeding poultry, can also be used for paper making, plate making, edible fungus culture, environment-friendly materials, chemicals, straw carbon, building materials and the like, has a huge use, and can generate huge economic benefits if reasonably applied.

In response to such problems, it is necessary to develop a cotton stalk harvesting mechanism to improve the efficiency of cotton stalk recovery. The prior art cotton stalk harvesting mechanisms can be classified into a shovel type, a roll type and a lifting type according to the harvesting principle and method. Wherein, the first two modes can make the root stay in the cotton field, if do not carry out subsequent incineration disposal, easily spread the plant diseases and insect pests, influence the cultivation of next year. For example, chinese patent document CN204762127U discloses a cotton stalk puller. The rod puller comprises a fixed rod and a telescopic rod sleeved at one end of the fixed rod. The rod body of the fixed rod is connected with a cotton rod sleeve hook used for pulling the rod, and the opening of the cotton rod sleeve hook faces to one end of the telescopic rod. The cotton stalk sleeve hook is designed in the pulling-up process of cotton stalks, saves labor, has low labor intensity, is not easy to hurt hands and has low cost. However, the cotton stalk puller is difficult to be applied to a large-scale mechanized cotton field.

Through search, chinese patent document CN111869411A discloses a double-clip type double-row cotton stalk removing device. Each outer chain plate of the left chain transmission mechanism in the pulling device is provided with a left auxiliary plate. And each outer chain plate of the right chain transmission mechanism is provided with a right auxiliary plate. Each outer chain plate of the middle chain transmission mechanism is provided with a middle auxiliary plate. The left attached plate and the right attached plate respectively correspond to the position and the movement speed of the middle attached plate. A left strip-shaped gap for removing the cotton stalks is formed between the left attached plate and the middle attached plate. A right strip-shaped gap for removing the cotton stalks is formed between the right auxiliary plate and the middle auxiliary plate. The distance between the left strip-shaped gap and the right strip-shaped gap is matched with the distance between two rows of cotton stalks.

Although, the pulling device can reduce the bending or shearing force effect on the cotton stalks by adjusting the moving speed, thereby avoiding the cotton stalks from being pulled off. However, the removing device can only remove two lines of cotton stalks once when used in the field, and the strip-shaped gaps need to be correspondingly designed according to the line spacing of the cotton stalks, so that the requirement of large-scale mechanized operation in the cotton field is difficult to meet.

In conclusion, how to design a pulling device in the process of cotton straw recycling to effectively solve the problem that the root of the cotton straw stays in the ground, improve the efficiency of pulling the cotton straw, avoid the missing pulling of the obliquely-laid cotton straw, and further improve the operation effect becomes a technical problem to be urgently solved by technical personnel in the field.

Disclosure of Invention

The invention aims to provide a pulling device for the cotton straw recycling process, which is used for effectively solving the problem that the root of the cotton straw is left in the ground, improving the efficiency of pulling the cotton straw, avoiding the missing pulling of the inclined lodging cotton straw and further improving the operation effect.

In order to achieve the purpose, the invention adopts the following scheme: a telescopic cotton stalk pulling device is provided, which comprises a frame, a transmission structure and a harvesting structure;

wheels are arranged at the bottom of the rack, a front baffle plate for mounting a transmission structure is arranged at the top of the rack, and a traction frame connected with traction power equipment is arranged on the front baffle plate;

the transmission structure comprises a transmission shaft and a transmission case, wherein a base of the transmission case is fixedly arranged on the front baffle, the input end of the transmission case is connected with the output shaft of the power device, the output end of the transmission case is connected with the transmission shaft, and the output end of the transmission shaft is connected with the harvesting structure;

the harvesting structure comprises a roller assembly and a rotating shaft, wherein the end part of the rotating shaft is connected with the frame, the driving end of the rotating shaft is connected with the output end of the transmission shaft, and the roller assembly is axially arranged along the rotating shaft and rotates along with the rotation of the rotating shaft;

the drum component comprises a shell and a clamping jaw, a central hole for the rotating shaft to penetrate is formed in the middle of the shell, a grabbing opening for the clamping jaw to stretch out is formed in the side wall of the shell, a cavity for the clamping jaw to retract is formed in the shell, a rotary disc is arranged in the cavity, the central line of the rotary disc is offset with the axis of the rotating shaft, the clamping jaw is provided with a grabbing portion and a connecting portion, one end of the connecting portion is hinged to the inner wall of the shell through a mounting seat, and the other end of the connecting portion is connected with the rotary disc through a connecting rod.

Preferably, the roller assemblies are arranged at equal intervals along the axial direction of the rotating shaft, and the clamping jaws are arranged at equal intervals in the circumferential direction of the shell. So set up, the cotton stalk in the cotton field is evenly pulled out to the results structure of being convenient for, has further improved the efficiency of pulling out cotton stalk.

Preferably, the grabbing part of the claw is in a V-shaped tooth shape, the opening of the V-shaped tooth shape points to the grabbing opening of the shell, the inner side of the V-shaped tooth shape forms a grabbing groove, the width of the grabbing groove is gradually reduced from the opening of the V-shaped tooth shape to the tip of the V-shaped tooth shape, and the width of the grabbing groove at the opening is larger than the maximum outer diameter of the cotton stalk. So set up, snatch the width of groove gradual change and be applicable to the external diameter size of different cotton stalks, when pulling out the cotton stalk, to the cotton stalk of thickness difference, follow the opening entering of V-arrangement tooth earlier, along with the rotation of pivot and pull under power equipment's the traction for the cotton stalk is to the most advanced motion of V-arrangement tooth gradually for the V-arrangement tooth, and the width that snatchs the groove reduces gradually, and then the V-arrangement tooth is accomplished to cotton stalk and is pressed from both sides tightly, especially has effectively reduced to the slope lodging form cotton stalk and has leaked the rate of pulling out.

Preferably, the output end of the transmission shaft is provided with a first chain wheel, the driving end of the rotating shaft is provided with a second chain wheel, and the first chain wheel is connected with the second chain wheel through a chain. So set up, the transmission shaft links to each other with the pivot through chain drive for the harvest structure can adapt to the operational environment in the cotton field, has certain overload capacity, is favorable to further reducing the fault rate of pulling out the mechanism.

Preferably, the chain is provided with a tensioning structure, the tensioning structure comprises a tensioning chain wheel, and the tensioning chain wheel is connected with the rack through a mounting seat. So set up, be favorable to avoiding the chain to be elongated and the transmission that leads to is inhomogeneous, further promoted the stability of pulling out the device operation.

Preferably, the transmission case is a bevel gear transmission case, and an output shaft of the power device is connected with an input end of the transmission case through a coupler. So set up, power device's output shaft passes through the bevel gear structure and links to each other with the transmission shaft, has changed power device's transmission direction, is convenient for optimize the structural dimension of frame on the width, and then is favorable to promoting the trafficability characteristic of pulling out the device between cotton stalk.

Preferably, the rear part of the harvesting structure is provided with a rear baffle, and the end part of the rear baffle is connected with the frame. So set up, backplate is used for preventing that the cotton stalk from popping out from the top that drops the mechanism, simultaneously, is favorable to further strengthening the overall structure intensity of frame.

Preferably, the end part of the rotating shaft is connected with the frame through a bearing seat, and the turntable is in key connection with the rotating shaft. So set up, the key-type is convenient for transmit the torque of pivot to the carousel, has further promoted the stationarity that the jack catch is concertina movement.

Preferably, the traction power equipment is a tractor, and the power device is a diesel engine.

The invention also provides a pulling method using the telescopic cotton stalk pulling device, which comprises the following steps:

step one, connecting a traction frame at the front end of a rack with traction power equipment, connecting an input shaft of a transmission case with an output shaft of a power device, starting the traction power equipment, and drawing the rack with wheels into a cotton field by the traction power equipment;

step two, starting a power device, wherein the power device drives a rotating shaft to rotate through a transmission structure so as to drive a roller assembly to rotate, and the power device is matched with the forward traction effect of traction power equipment on a rack, so that cotton stalks in the cotton field enter openings of the grabbing parts of the clamping jaws, and along with the rotation of the rotating shaft, the grabbing parts of the clamping jaws clamp and pull the cotton stalks;

and step three, the rotating shaft further drives the rotating disc with the axis offset to rotate, and then the connecting rod is driven to drive the clamping jaws to perform contraction movement towards the inside of the shell, so that the pulled cotton stalks are in contact with the outer wall of the shell, and the cotton stalks are separated from the clamping jaws and fall in a cotton field to wait for subsequent collection operation.

Compared with the prior art, the telescopic cotton stalk pulling device and the pulling method provided by the invention have the following prominent substantive characteristics and remarkable progress:

1. the telescopic cotton stalk pulling device utilizes the power device to drive the rotating shaft to rotate through the transmission structure, so as to drive the roller assembly to rotate, and the power device is matched to pull forward the frame, cotton stalks in the cotton field enter the openings of the grabbing parts of the claws, and along with the rotation of the rotating shaft, the grabbing parts of the claws clamp and pull the cotton stalks, so that the problem of residual roots of the cotton stalks in the cotton field is effectively solved, the pulled cotton stalks rotate along with the rotating shaft, the turntables with offset axes drive the connecting rods to drive the claws to do contraction movement towards the shell, so that the pulled cotton stalks are in contact with the outer wall of the shell, the cotton stalks are separated from the claws and fall into the cotton field, the claws can enter the next pulling circulation, the efficiency of pulling the cotton stalks is further improved, and the effect of pulling operation is improved;

2. the portion of snatching of jack catch is the V-arrangement cusp among this scalable cotton stalk pulling device, the Y-arrangement cusp inboard has the groove of snatching, the width that snatchs the groove gradual change is applicable to the external diameter size of different cotton stalks, when pulling out the cotton stalk, to the cotton stalk of thickness difference, the opening from the V-arrangement tooth gets into earlier, along with the rotation of pivot and pull under power equipment's the traction, make cotton stalk for the most advanced motion of V-arrangement tooth gradually, the width that snatchs the groove reduces gradually, and then the V-arrangement tooth is accomplished the clamp tightly to cotton stalk, especially effectively reduced the hourglass rate of pulling out to the slope lodging form cotton stalk.

Drawings

FIG. 1 is a schematic perspective view of a retractable cotton stalk pulling apparatus according to an embodiment of the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a schematic view of the internal structure of the harvesting structure;

fig. 5 is a schematic view of an assembly structure of the drum assembly.

Reference numerals: the device comprises a clamping jaw 1, a rack 2, a transmission case 3, a transmission shaft 4, a chain 5, a roller assembly 6, wheels 7, a traction frame 8, a front baffle 9, a connecting rod 10, a rotary table 11, a shell 12, a rear baffle 13, an axle 14, a rotating shaft 15 and a clamping groove 16.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings.

The retractable cotton stalk pulling device shown in figures 1-5 is used for effectively solving the problem of residual roots of cotton stalks in a cotton field in the process of recovering the cotton stalks. The pulling device utilizes a power device to drive the rotating shaft to rotate through a transmission structure, so as to drive the roller assembly to rotate, and the cotton stalks in the cotton field enter the openings of the grabbing parts of the clamping jaws in cooperation with the forward traction effect of traction power equipment on the frame. Along with the rotation of the rotating shaft, the grabbing parts of the clamping jaws clamp and pull the cotton stalks, so that the problem of residual roots of the cotton stalks in the cotton field is effectively solved. The cotton stalk pulled up drives the jack catch to contract towards the shell in the rotation of axis looks off-set carousel drive connecting rod along with the pivot for the cotton stalk pulled up contacts with the outer wall of shell, and the cotton stalk breaks away from the jack catch and drops in the cotton field, is favorable to the jack catch to get into next circulation of pulling up, has further improved the efficiency of pulling up the cotton stalk, has promoted the effect of pulling up the operation.

[ Structure of retractable Cotton stalk pulling device ]

As shown in figure 1, the telescopic cotton stalk pulling device comprises a frame 2, a transmission structure and a harvesting structure. Wheels 7 are arranged at the bottom of the frame 2. The top of the frame 2 is provided with a front baffle 9 for installing a transmission structure. The front baffle 9 is provided with a traction frame 8 connected with traction power equipment.

As shown in fig. 2, the transmission structure includes a transmission shaft 4 and a transmission case 3. The base of the transmission case 3 is fixedly arranged on the front baffle 9. The input end of the transmission case 3 is connected with the output shaft of the power device. The output end of the transmission case 3 is connected with the transmission shaft 4. The output end of the transmission shaft 4 is connected with the harvesting structure.

The harvesting structure includes a roller assembly 6 and a shaft 15. The end of the shaft 15 is connected to the frame 2. The active end of the rotating shaft 15 is connected with the output end of the transmission shaft 4. As shown in fig. 3, the roller assembly 6 is arranged along the axial direction of the rotating shaft 15 and rotates with the rotation of the rotating shaft 15.

As shown in fig. 4 in conjunction with fig. 5, the drum assembly 6 includes a housing 12 and a jaw 1. The housing 12 is provided at a central portion thereof with a central hole through which the rotation shaft 15 passes. The side wall of the shell 12 is provided with a grabbing opening for the claw 1 to extend out. The interior of the housing 12 has a cavity for the retraction of the jaws 1. A turntable 11 is arranged in the cavity. The center line of the turntable 11 is offset from the axis of the rotating shaft 15. The jaw 1 has a catching portion and a connecting portion. One end of the connecting part is hinged with the inner wall of the shell 12 through the mounting seat. The other end of the connecting part is connected with a rotary table 11 through a connecting rod 10.

The center line of the rotary disk 11 is offset from the axis of the rotary shaft 15 to form a cam structure. Therefore, the claw 1 is driven by the power device to make telescopic motion in the radial direction of the rotating disc 11. The power device drives the rotating shaft to rotate through the transmission structure, so as to drive the roller assembly to rotate, the power device is matched with the traction action of traction power equipment on the forward direction of the rack, cotton stalks in the cotton field enter the openings of the grabbing parts of the claws, and the grabbing parts of the claws clamp and pull the cotton stalks along with the rotation of the rotating shaft; the pivot further drives the axis looks off-set carousel and rotates, and then the drive connecting rod drives the jack catch and carries out the concertina movement in to the casing for the cotton stalk that is pulled out contacts with the outer wall of casing, and cotton stalk breaks away from the jack catch and drops in the cotton field.

Wherein, the traction power equipment can be selected as a tractor. The power plant may be selected as a diesel engine.

[ harvesting Structure ]

The harvesting structure includes a roller assembly 6 and a shaft 15. The end of the shaft 15 is connected to the frame 2. The active end of the rotating shaft 15 is connected with the output end of the transmission shaft 4. As shown in fig. 2, the roller assemblies 6 are arranged at equal intervals in the axial direction of the rotating shaft 15. As shown in fig. 4, the jaws 1 are arranged at equal intervals in the circumferential direction of the housing 12. So set up, the cotton stalk in the cotton field is evenly pulled out to the results structure of being convenient for, has further improved the efficiency of pulling out cotton stalk.

[ Structure of claw ]

As shown in fig. 5, the catching portion of the jaw 1 is V-shaped toothed. The V-shaped toothed opening points towards the gripping opening of the housing 12. The inner side of the V-shaped teeth forms a catching groove 16. As shown in connection with fig. 2, the width of the catching groove 16 gradually decreases from the opening of the V-shaped teeth toward the tip of the V-shaped teeth. The width of the grabbing groove 16 at the opening is larger than the maximum outer diameter of the cotton stalk. So set up, snatch the width of 16 gradual changes in groove and be applicable to the external diameter size of different cotton stalks, when pulling out the cotton stalk, to the cotton stalk of thickness difference, follow the opening entering of V-arrangement tooth earlier, along with the rotation of pivot 15 and pull under power equipment's the traction for the cotton stalk is for the most advanced motion of V-arrangement tooth gradually to the V-arrangement tooth, and the width that snatchs the groove reduces gradually, and then the V-arrangement tooth is accomplished to cotton stalk and is pressed from both sides tightly, especially has effectively reduced to the slope lodging form cotton stalk and has leaked the rate of pulling out.

[ Transmission Structure ]

The transmission structure comprises a transmission shaft 4 and a transmission case 3. The base of the transmission case 3 is fixedly arranged on the front baffle 9. The input end of the transmission case 3 is connected with the output shaft of the power device. The output end of the transmission case 3 is connected with the transmission shaft 4. The output end of the transmission shaft 4 is connected with the harvesting structure.

The output end of the transmission shaft 4 is provided with a first chain wheel. The driving end of the rotating shaft 15 is provided with a second sprocket. The first sprocket is connected to the second sprocket by a chain 5. So set up, transmission shaft 4 links to each other with pivot 15 through chain drive for the harvest structure can adapt to the operational environment in the cotton field, has certain overload capacity, is favorable to further reducing the fault rate of pulling out the mechanism.

The chain 5 is provided with a tensioning structure. The tensioning arrangement comprises a tensioning sprocket. The tension chain wheel is connected with the frame 2 through a mounting seat. So set up, be favorable to avoiding chain 5 to be elongated and the transmission that leads to is inhomogeneous, further promoted the stability of pulling out the device operation.

Wherein, the transmission case 3 is a bevel gear transmission case 3. The output shaft of the power device is connected with the input end of the transmission case 3 through a coupler. So set up, power device's output shaft passes through the bevel gear structure and links to each other with transmission shaft 4, has changed power device's transmission direction, is convenient for optimize the structural dimension of frame 2 on the width, and then is favorable to promoting the trafficability characteristic of pulling out the device between cotton stalk.

Furthermore, the rear of the harvesting structure is provided with a tailgate 13. The end of the tailgate 13 is connected to the frame 2. So set up, backplate 13 is used for preventing that the cotton stalk from popping out from the top that drops the mechanism, simultaneously, is favorable to further strengthening the overall structure intensity of frame 2.

In order to further improve the stability of the telescopic motion of the claw 1, the end part of the rotating shaft 15 is connected with the frame 2 through a bearing seat. The rotary disk 11 is connected with the rotating shaft 15 through a key. So configured, the keyed connection facilitates the transfer of torque from the shaft 15 to the turntable 11.

When the telescopic cotton stalk pulling device is pulled out, the embodiment of the invention comprises the following steps:

step one, connecting a traction frame 8 at the front end of a rack 2 with traction power equipment, connecting an input shaft of a transmission case 3 with an output shaft of a power device, starting the traction power equipment, and drawing the rack 2 with wheels 7 into a cotton field by the traction power equipment;

step two, starting a power device, driving the rotating shaft 15 to rotate through a transmission structure by the power device, further driving the roller assembly 6 to rotate, and matching with the forward traction action of traction power equipment on the frame 2, enabling cotton stalks in the cotton field to enter the openings of the grabbing parts of the claws 1, and clamping and pulling the cotton stalks by the grabbing parts of the claws 1 along with the rotation of the rotating shaft 15;

and step three, the rotating shaft 15 further drives the rotating disc 11 with the offset axis to rotate, and then the connecting rod 10 is driven to drive the clamping jaw 1 to contract towards the inside of the shell 12, so that the pulled cotton stalks are contacted with the outer wall of the shell 12, and the cotton stalks are separated from the clamping jaw 1 and fall in a cotton field to wait for subsequent collection operation.

The telescopic cotton stalk pulling device in the embodiment of the invention has reasonable and compact structure and ingenious conception, pulls the cotton stalks out through the harvesting structure, and the action principle of the device imitates the principle of a nail hammer. From the X axis right in front of the whole frame, the pulling position is gradually changed from wide to narrow. When the cotton stalk pulling device works, cotton stalks with different thicknesses enter from the wide opening, the size of the wide opening is designed to be larger than the actual size of the whole cotton stalk, the pulling opening is slowly narrowed along with the rotation of the cotton stalk pulling device through the roller, and the size of the harvesting opening at the lowest end of the cotton stalk pulling device is designed to be smaller than the actual size of the whole cotton stalk.

From the Z axis that sets up above the whole frame, the same device of pulling out forms a gradual change process from wide to narrow, and the same mode is directed against different cotton stalks, gets into from wide mouthful, pulls out. The Y-axis of the side edge shows an arc shape, and the gradual change process is from thin to thick. During operation, from XYZ three axes, the three axes are pulled from wide to narrow, and the three coordinates are set so as to more effectively simulate the design idea of the claw hammer and have a very good pulling effect when the cotton stalk pulling device works.

When the cotton stalks are pulled out and fall off, the clamping jaws rotate along the rotary disc. When the cotton stalks are pulled out, the clamping jaws do telescopic motion along the radial direction of the rotary table through the cam structure principle. When the claw is about to contact with the cotton stalk, the claw can extend out of the cavity of the shell to pull out the cotton stalk; after the cotton stalk is pulled out, the jack catch is further rotatory under the drive of pivot, and when the back upper place position that will reach the position of pulling out, the jack catch contracts, makes the cotton stalk contact the outer wall of casing, drops the cotton stalk, reaches the cotton stalk and pulls out the effect. The cotton stalk pulling device has the advantages of simple structure, low manufacturing cost, simple action mechanism, long service life and high efficiency, is capable of improving the pulling rate and reducing the pulling rate, and is stable.

The present invention is not limited to the specific technical solutions described in the above embodiments, and other embodiments may be made in the present invention in addition to the above embodiments. It will be understood by those skilled in the art that various changes, substitutions of equivalents, and alterations can be made without departing from the spirit and scope of the invention.

Claims (10)

1. A telescopic cotton stalk pulling device is characterized by comprising a frame, a transmission structure and a harvesting structure;

wheels are arranged at the bottom of the rack, a front baffle plate for mounting a transmission structure is arranged at the top of the rack, and a traction frame connected with traction power equipment is arranged on the front baffle plate;

the transmission structure comprises a transmission shaft and a transmission case, wherein a base of the transmission case is fixedly arranged on the front baffle, the input end of the transmission case is connected with the output shaft of the power device, the output end of the transmission case is connected with the transmission shaft, and the output end of the transmission shaft is connected with the harvesting structure;

the harvesting structure comprises a roller assembly and a rotating shaft, wherein the end part of the rotating shaft is connected with the frame, the driving end of the rotating shaft is connected with the output end of the transmission shaft, and the roller assembly is axially arranged along the rotating shaft and rotates along with the rotation of the rotating shaft;

the drum component comprises a shell and a clamping jaw, a central hole for the rotating shaft to penetrate is formed in the middle of the shell, a grabbing opening for the clamping jaw to stretch out is formed in the side wall of the shell, a cavity for the clamping jaw to retract is formed in the shell, a rotary disc is arranged in the cavity, the central line of the rotary disc is offset with the axis of the rotating shaft, the clamping jaw is provided with a grabbing portion and a connecting portion, one end of the connecting portion is hinged to the inner wall of the shell through a mounting seat, and the other end of the connecting portion is connected with the rotary disc through a connecting rod.

2. The retractable cotton stalk puller according to claim 1, wherein the roller assemblies are arranged at equal intervals in the axial direction of the rotating shaft, and the jaws are arranged at equal intervals in the circumferential direction of the housing.

3. The retractable cotton stalk puller as claimed in claim 1, wherein the catching part of the claw is in a V-shaped tooth shape, the opening of the V-shaped tooth shape is directed to the catching opening of the housing, the inside of the V-shaped tooth shape forms a catching groove, the width of the catching groove is gradually reduced from the opening of the V-shaped tooth shape to the tip of the V-shaped tooth shape, and the width of the catching groove at the opening is larger than the maximum outer diameter of the cotton stalk.

4. The retractable cotton stalk pulling apparatus as claimed in claim 1, wherein the output end of the transmission shaft is provided with a first chain wheel, the driving end of the rotation shaft is provided with a second chain wheel, and the first chain wheel is connected with the second chain wheel through a chain.

5. The retractable cotton stalk pulling apparatus as claimed in claim 4, wherein the chain is provided with a tension structure, the tension structure comprises a tension sprocket, and the tension sprocket is connected with the frame through a mounting seat.

6. The retractable cotton stalk pulling device as claimed in claim 1, wherein the transmission case is a bevel gear transmission case, and the output shaft of the power device is connected with the input end of the transmission case through a coupling.

7. The retractable cotton stalk pulling apparatus as recited in claim 1, wherein a rear baffle is provided at a rear portion of the harvesting structure, and an end portion of the rear baffle is connected to the frame.

8. The retractable cotton stalk pulling device as claimed in claim 1, wherein the end of the rotating shaft is connected with the frame through a bearing seat, and the rotating disc is connected with the rotating shaft through a key.

9. The retractable cotton stalk pulling apparatus as recited in claim 1, wherein the traction power device is a tractor and the power device is a diesel engine.

10. The pulling method of the retractable cotton stalk pulling apparatus according to any one of claims 1 to 9, comprising:

step one, connecting a traction frame at the front end of a rack with traction power equipment, connecting an input shaft of a transmission case with an output shaft of a power device, starting the traction power equipment, and drawing the rack with wheels into a cotton field by the traction power equipment;

step two, starting a power device, wherein the power device drives a rotating shaft to rotate through a transmission structure so as to drive a roller assembly to rotate, and the power device is matched with the forward traction effect of traction power equipment on a rack, so that cotton stalks in the cotton field enter openings of the grabbing parts of the clamping jaws, and along with the rotation of the rotating shaft, the grabbing parts of the clamping jaws clamp and pull the cotton stalks;

and step three, the rotating shaft further drives the rotating disc with the axis offset to rotate, and then the connecting rod is driven to drive the clamping jaws to perform contraction movement towards the inside of the shell, so that the pulled cotton stalks are in contact with the outer wall of the shell, and the cotton stalks are separated from the clamping jaws and fall in a cotton field to wait for subsequent collection operation.

Images