CN113998176A - Square bale film winding equipment for silage and use method thereof - Google Patents

Abstract

The invention relates to a silage square bundle film winding device which comprises a base, wherein a turntable is positioned above the base and is rotationally connected with the base, and a power mechanism for driving the turntable to rotate is arranged on the base; two groups of material block bearing devices are arranged on the turntable and are symmetrically arranged; a lifting material receiving mechanism is arranged between the two groups of supports of each group of material block bearing devices; a film breaking mechanism is arranged on the turntable; the base is connected with a film placing mechanism. The application is applied to the square bundle film coating, has the advantages of tight and tight package, high operation efficiency and low labor intensity of workers, and effectively fills the market vacancy.

Description

Square bale film winding equipment for silage and use method thereof

Technical Field

The invention relates to film winding equipment, in particular to green feed square bundle film winding equipment and a using method thereof.

Background

With the development of economy in China, animal husbandry is rapidly developed, the demand of pasture is increasing day by day, and natural pasture cannot meet the development requirement of the animal husbandry, so that pasture planting area is larger and larger year by year, while the traditional harvesting method is to harvest hay after cutting and airing, which causes serious nutrition loss of the pasture, and the practice proves that pasture silage is a scientific harvesting mode which can maintain the nutritional ingredients of the pasture, reduce the loss and be beneficial to storage.

The forage grass silage process needs to carry out coating treatment on material blocks, the existing coating equipment can only be generally applied to round bale coating and cannot be applied to square bale coating, and the defects of low coating and low operating efficiency exist in the case that a small part of the equipment is applied to the square bale coating.

Based on above-mentioned problem, this application provides a blue or green fodder side bundle twines membrane equipment to effectively fill market vacancy.

Disclosure of Invention

The invention provides a green feed square bundle film winding device and a using method thereof, aiming at the defects of the prior art.

The invention provides a square bale film winding device for silage, which comprises a base, wherein a turntable is positioned above the base and is rotationally connected with the base, and a power mechanism for driving the turntable to rotate is arranged on the base; two groups of material block bearing devices are arranged on the turntable and are symmetrically arranged; each group of material block bearing devices comprises two groups of supports which have the same structure and are respectively arranged on the front side and the rear side of the rotary table, each group of supports comprises an L-shaped connecting plate, each L-shaped connecting plate comprises a first connecting part and a second connecting part, one end of each second connecting part is fixed with the rotary table, one end of each upper swing arm is hinged with the first connecting part, one end of each lower swing arm is hinged with the second connecting part, the upper swing arms and the lower swing arms are connected through bidirectional threaded adjusting pull rods, one end of each bidirectional threaded adjusting pull rod is hinged with the upper swing arm, and the other end of each bidirectional threaded adjusting pull rod is hinged with the lower swing arm; an upper carrier roller is rotatably connected between the two upper swing arms of the front and rear groups of brackets, a lower carrier roller is rotatably connected between the two lower swing arms of the front and rear groups of brackets, and the two upper carrier rollers and the two lower carrier rollers synchronously rotate in the same direction under the driving of a driving mechanism; a lifting material receiving mechanism is arranged between the two groups of supports of each group of material block bearing devices; a film breaking mechanism is arranged on the turntable; the base is connected with a film placing mechanism.

The hinge position of the upper swing arm and the first connecting part is a first hinge point, the hinge position of the lower swing arm and the second connecting part is a second hinge point, the hinge position of the bidirectional threaded adjusting pull rod and the upper swing arm is a third hinge point, and the hinge position of the bidirectional threaded adjusting pull rod and the lower swing arm is a fourth hinge point. First pin joint, second pin joint, third pin joint and fourth pin joint line constitute the quadrangle, and after two-way screw thread adjusting pull rod length was transferred, under the drive of two upper idler and two snub pulleys, the below was tied and is taken place circumferential rotation, and the focus of corresponding side is tied along with shifting, and the quadrangle that four pin joints constitute can take place the self-adaptation change in the angle under the effect of the gravity is tied to the side to make upper idler and snub pulley contact with the side all the time, increase the compactness of follow-up diolame process.

Preferably, the lifting type material receiving mechanism comprises a tray, rolling shafts are arranged on the tray, two supporting rods are hinged to the tray, the lower end of each support is hinged to a mounting plate, the mounting plate is connected between two L-shaped connecting plates of the two groups of supports, a cylinder barrel of a lifting cylinder is hinged to the mounting plate, and a push rod of the lifting cylinder is hinged to the tray. The tray can be jacked under the drive of the lifting cylinder, the tray is higher than the plane where the upper carrier roller and the lower carrier roller are located after jacking, and when the tray is retracted, the tray is lower than the plane where the upper carrier roller and the lower carrier roller are located. When the trays of the two groups of lifting type receiving mechanisms are all jacked up, the square bundle falls on the two trays, and the trays are gradually retracted after receiving the material, so that the square bundle gradually falls on the two upper carrier rollers and the two lower carrier rollers.

Preferably, the film breaking mechanism comprises a base connected with the rotary table, the base is connected with the rotary table through a bolt, a cylinder barrel of the film breaking cylinder is hinged with the base, a push rod of the film breaking cylinder is hinged with one end of a crank arm, the position of an inflection point of the crank arm is hinged with the base, the other end of the crank arm is hinged with the middle of a pressing plate, one end of the pressing plate is connected with two pressing rods, the other end of the pressing plate is hinged with a swing arm, and the other end of the swing arm is hinged with the base; the blade is arranged on the crank arm, a gap is reserved between the two pressure rods, and the blade falls down by the two pressure rods and penetrates through the gap.

Preferably, the two compression rods are higher and lower. When the pressing rod falls down, the low pressing rod can be firstly contacted with the film, so that a certain tensioning force is generated on the film, and the film cutting is facilitated.

Preferably, a cushion block is arranged below the high pressure rod, a guide rod is fixedly connected with the bottom surface of the cushion block, the guide rod penetrates through the connecting lever, an adjusting spring is sleeved on the guide rod and is positioned between the cushion block and the connecting lever, and the lower end of the guide rod extends out of the connecting lever and is in threaded connection with an adjusting nut. Can adjust spring's compression degree through adjusting nut, and then change the size of spring top tight power for the cushion produces the top tight power to the film, makes film and depression bar effective contact. When the two pressure levers fall down, the film can be pressed to the position of the blade, and the film is cut off by matching with the blade.

Preferably, the film releasing mechanism comprises a film standing support connected with the base, a film releasing roller is rotatably connected to the film standing support, the film roll is mounted on the film releasing roller, and a film output guide mechanism is connected to the film standing support; the film output guide mechanism comprises an upper end plate and a lower end plate, the upper end plate and the lower end plate are both hinged with the film erecting support, the upper end plate and the lower end plate are connected through a support rod, a tension roller and a guide roller are arranged between the upper end plate and the lower end plate, and the tension roller and the guide roller are both connected with the upper end plate and the lower end plate through bearings; a large gear is connected to the tensioning roller, a small gear is connected to the guide roller, and the large gear is meshed with the small gear; the stay bar is connected with the vertical film support through a tension spring to enable the tension roller to compress the film roll. The film passes through the tensioning roller and then passes through the guide roller in the output process, gears connected to the tensioning roller and the guide roller are different in size, the rotating speed of the guide roller is high, the rotating speed of the tensioning roller is low, the film slowly flows out when passing through the tensioning roller and quickly flows out when passing through the guide roller, and the difference of the output speeds can generate tensioning force on the film, so that the film is in a tensioned state, and the compactness of the film during wrapping is increased.

Preferably, the driving mechanism comprises two hydraulic motors, the two hydraulic motors are respectively installed on the two groups of material block bearing devices and are fixed to the L-shaped connecting plate, driving gears are installed on output shafts of the hydraulic motors, driven gears are installed on each upper carrier roller and each lower carrier roller, and the driving gears on each hydraulic motor drive one upper carrier roller and one lower carrier roller to synchronously rotate in the same direction through chain transmission.

Preferably, the turntable and the base are connected through a bearing, the power mechanism is a motor, a shell of the motor is fixed with the base, and an output shaft of the motor penetrates through the base and is connected with the turntable. The rotation of the rotary disc is realized under the driving of the motor.

Preferably, a hydraulic rotary joint is mounted on the rotary table, the input end of the hydraulic rotary joint is connected with a pump station, and the output end of the hydraulic rotary joint is respectively connected with the hydraulic motor, the lifting cylinder and the film breaking cylinder through inlet and outlet pipelines. The hydraulic rotary joint is of an existing structure, and is a rotary joint specially used for low-speed high-pressure multi-medium and multi-channel equipment.

In a second aspect of the present invention, there is provided a method for using the above-mentioned square bundle wrapping apparatus, comprising the steps of:

(1) the trays of the two groups of lifting material receiving mechanisms are jacked up, the square bundles fall on the two trays, and the trays are gradually retracted after material receiving, so that the square bundles gradually fall on the two upper carrier rollers and the two lower carrier rollers;

(2) the tail end of the film placing mechanism is pressed by a pressing rod of the film breaking mechanism in advance;

(3) starting a power mechanism and a driving mechanism, wherein the turntable carries two groups of material block bearing devices and a film breaking mechanism to rotate, and two upper carrier rollers and two lower carrier rollers start to rotate; the rotary table realizes axial rotation of the square bundle, and the square bundle rotates in the axial direction and synchronously realizes circumferential rotation of the square bundle through the matching of the two upper carrier rollers and the two lower carrier rollers;

(4) the film breaking mechanism presses the tail end of the film, the film can be pulled along with the rotation of the turntable and can be unreeled, and the film is wound on the square bundle in the process;

(5) after the film is wound for several circles, the film breaking cylinder is controlled to lift the two pressure rods to a certain height, and the pressing on the tail end of the film is released; the film is wound on the square bundle for one circle along with the continuous rotation of the turntable;

(6) when the film wrapping completion state is approached, the film breaking cylinder is controlled to enable the two pressure rods to be completely lifted and then fall down, the film is pressed to the position of the blade along with the falling of the two pressure rods, the blade cuts the film into sections, one end, connected with the square bundle, of the film is wound on the square bundle along with the continuous rotation of the rotary table, and one end, connected with the film placing mechanism, of the film is pressed by the high pressure rod to facilitate the next film winding;

(7) and after the film wrapping is finished, stopping rotating the rotary disc, and transferring the square bundle by using a forklift.

The invention has the beneficial effects that:

1. the application is applied to the square bundle film coating, has the advantages of tight and tight package, high operation efficiency and low labor intensity of workers, and effectively fills the market vacancy.

2. The carousel realizes that the side bundle axial rotates, and the side bundle circumferential direction is realized in step through two upper roll and two lower roll cooperations in the time of the side bundle axial rotation, and the mode that axial rotation and circumferential direction combined together can ensure that each part of side bundle all is wrapped up by the film and is tight.

3. First pin joint, second pin joint, third pin joint and fourth pin joint line constitute the quadrangle, and after two-way screw thread adjusting pull rod length was transferred, under the drive of two upper idler and two snub pulleys, the below was tied and is taken place circumferential rotation, and the focus of corresponding side is tied along with shifting, and the quadrangle that four pin joints constitute can take place the self-adaptation change in the angle under the effect of the gravity is tied to the side to make upper idler and snub pulley contact with the side all the time, increase the compactness of follow-up diolame process.

Drawings

FIG. 1 is a schematic view of the working state of the invention when the material is received by a tray;

FIG. 2 is an enlarged view of a portion B of FIG. 1;

FIG. 3 is a schematic view of the working state of the invention when the material is received by the upper carrier roller and the lower carrier roller;

FIG. 4 is a structural schematic diagram of the lifting type material receiving mechanism of the invention in a lifting state;

FIG. 5 is a structural schematic diagram of a falling state of the lifting material receiving mechanism of the invention;

FIG. 6 is a structural diagram of the film breaking mechanism in a falling state according to the present invention;

FIG. 7 is a structural diagram of the film breaking mechanism in a raised state according to the present invention;

FIG. 8 is a sectional view taken along line A-A of FIG. 6;

FIG. 9 is a schematic front view of the membrane-mounting bracket of the present invention;

FIG. 10 is a front view of the film output guide mechanism of the present invention;

FIG. 11 is a schematic top view of the assembled stand and film output guide of the present invention;

FIG. 12 is a schematic view of the orientation of the film passing through the film output guide mechanism according to the present invention;

shown in the figure:

1. a base, 2, a turntable, 3, a motor, 4, a second connecting part, 5, a first connecting part, 6, an upper swing arm, 7, a lower swing arm, 8, a bidirectional thread adjusting pull rod, 9, an upper carrier roller, 10, a lower carrier roller, 11, a second hinge point, 12, a fourth hinge point, 13, a first hinge point, 14, a third hinge point, 15, a hydraulic motor, 16, a mounting plate, 17, a tray, 18, a roller, 19, a film breaking mechanism, 20, a square bundle, 21, a film erecting support, 22, a guide roller, 23, a tensioning roller, 24, a film placing roller, 25, a film roll, 26, a gear wheel, 27, a pinion, 28, a support rod, 29, a lifting cylinder, 30, a base, 31, a film breaking cylinder, 32, a crank arm, 33, a pressure plate, 34, a swing arm, 35, a blade, 36, a pressure rod, 37, a cushion block, 38, an adjusting spring, 39, a guide rod, 40, an adjusting nut, 41 and an upper end plate, 42. lower end plate, 43, brace, 44, tension spring, 45, membrane.

Detailed Description

In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.

As shown in fig. 1, 2 and 3, the present invention comprises a base 1, a turntable 2 is positioned above the base 1 and is rotatably connected with the base 1, and a power mechanism for driving the turntable 2 to rotate is mounted on the base 1. Two groups of material block bearing devices are arranged on the turntable 2 and are symmetrically arranged. Every group material piece load-carrying device includes that the structure is the same and sets up two sets of supports in carousel 2 front and back both sides respectively, every group support includes L shape connecting plate, L shape connecting plate includes first connecting portion 5 and second connecting portion 4, the one end of second connecting portion 4 is fixed with carousel 2, the one end of going up swing arm 6 is articulated with first connecting portion 5, the one end of lower swing arm 7 is articulated with second connecting portion 4, it adjusts pull rod 8 through two-way screw thread to go up swing arm 6 and lower swing arm 7 and connect, one of them end of two-way screw thread regulation pull rod 8 is articulated with last swing arm 6, the other one end of two-way screw thread regulation pull rod 8 is articulated with lower swing arm 7. The opening degree between the upper swing arm 6 and the lower swing arm 7 can be adjusted by adjusting the bidirectional thread adjusting pull rod 8.

Two upper swing arms 6 of the front and rear groups of supports are rotatably connected with an upper carrier roller 9, and two ends of the upper carrier roller 9 are connected with the upper swing arms 6 through bearings. Two lower swing arms 7 of the front and rear two groups of supports are rotatably connected with a lower carrier roller 10, and two ends of the lower carrier roller 10 are connected with the lower swing arms 7 through bearings. The two upper carrier rollers 9 and the two lower carrier rollers 10 synchronously rotate in the same direction under the drive of the driving mechanism.

The hinge position of the upper swing arm 6 and the first connecting portion 5 is a first hinge point 13, the hinge position of the lower swing arm 7 and the second connecting portion 4 is a second hinge point 11, the hinge position of the bidirectional threaded adjusting pull rod 8 and the upper swing arm 6 is a third hinge point 14, and the hinge position of the bidirectional threaded adjusting pull rod 8 and the lower swing arm 7 is a fourth hinge point 12. First pin joint 13, second pin joint 11, third pin joint 14 and fourth pin joint 12 line constitution quadrangle, after two-way screw thread adjusting pull rod 8 length was transferred, under the drive of two upper idler 9 and two snub pulley 10, the circumference rotation takes place for the side bundle, the focus of corresponding side bundle along with shifting, the quadrangle that four pin joints constitute can take place the self-adaptation change in the angle under the effect of the side bundle gravity to make upper idler 9 and snub pulley 10 bind 20 contacts with the side all the time, increase the compactness of follow-up diolame process.

The driving mechanism comprises two hydraulic motors 15, the two hydraulic motors 15 are respectively installed on the two groups of material block bearing devices, the hydraulic motors 15 are specifically fixed with the L-shaped connecting plate, driving gears are installed on output shafts of the hydraulic motors 15, driven gears are installed on each upper carrier roller 9 and each lower carrier roller 10, and the driving gears on each hydraulic motor 15 drive one upper carrier roller 9 and one lower carrier roller 10 to synchronously rotate in the same direction through chain transmission.

As shown in fig. 4 and 5, a lifting material receiving mechanism is arranged between two groups of supports of each material block carrying device, the lifting material receiving mechanism comprises a tray 17, a roller 18 is arranged on the tray 17, two support rods 28 are hinged on the tray 17, the lower end of each support rod 28 is hinged with a mounting plate 16, the mounting plate 16 is connected between two L-shaped connecting plates of the two groups of supports, a cylinder barrel of a lifting cylinder 29 is hinged with the mounting plate 16, and a push rod of the lifting cylinder 29 is hinged with the tray 17. The tray 17 can be jacked up under the driving of the lifting cylinder 29, the jacked tray 17 is higher than the plane where the upper carrier roller 9 and the lower carrier roller 10 are located, and when the tray 17 is retracted, the tray 17 is lower than the plane where the upper carrier roller 9 and the lower carrier roller 10 are located. When the trays 17 of the two groups of lifting material receiving mechanisms are jacked up, the square bundle falls on the two trays 17, and the trays 17 are gradually retracted after material receiving, so that the square bundle gradually falls on the two upper carrier rollers 9 and the two lower carrier rollers 10.

As shown in fig. 6 and 7, a film breaking mechanism 19 is arranged on the turntable 2, the film breaking mechanism 19 includes a base 30 connected with the turntable 2, the base 30 is connected with the turntable 2 through a bolt, a cylinder barrel of a film breaking cylinder 31 is hinged with the base 30, a push rod of the film breaking cylinder 31 is hinged with one end of a crank arm 32, an inflection point position of the crank arm 32 is hinged with the base 30, the other end of the crank arm 32 is hinged with the middle part of a pressure plate 33, one end of the pressure plate 33 is connected with two pressure rods 36, the other end of the pressure plate 33 is hinged with a swing arm 34, and the other end of the swing arm 34 is hinged with the base 30. A blade 35 is mounted on the crank arm 32, a gap is reserved between the two pressing rods 36, and the blade 35 is dropped by the two pressing rods 36 to penetrate through the gap.

In this embodiment, in order to ensure the effective cutting of the film, as shown in fig. 8, two pressing rods 36 are higher and lower, and when the pressing rods 36 fall, the lower pressing rod 36 will contact with the film first, so as to generate a certain tensioning force to the film, which is beneficial to the cutting of the film.

Meanwhile, in order to make the film effectively contact with the compression rod 36 and improve the compression effect, as shown in fig. 8, a cushion block 37 is arranged below the high compression rod 36, a guide rod 39 is fixedly connected with the bottom surface of the cushion block 37, the guide rod 39 penetrates through the crank arm 32, an adjusting spring 38 is sleeved on the guide rod 39, the adjusting spring 38 is positioned between the cushion block 37 and the crank arm 32, and the lower end of the guide rod 39 extends out of the crank arm 32 and is in threaded connection with an adjusting nut 40. The compression degree of the adjusting spring 38 can be adjusted through the adjusting nut 40, and then the magnitude of the jacking force of the adjusting spring 38 is changed, so that the cushion block 37 generates jacking force on the film, and the film is effectively contacted with the pressure rod 36. When the two struts 36 are dropped, they will press the film to the position of the blade 35 and cut the film by engagement with the blade 35.

As shown in fig. 9, 10, 11 and 12, a film releasing mechanism is connected to the base 1, the film releasing mechanism includes a film standing support 21 connected to the base 1, a film releasing roller 24 is rotatably connected to the film standing support 21, a film roll 25 is mounted on the film releasing roller 24, a film output guide mechanism is connected to the film standing support 21, the film output guide mechanism includes an upper end plate 41 and a lower end plate 42, the upper end plate 41 and the lower end plate 42 are both hinged to the film standing support 21, the upper end plate 41 and the lower end plate 42 are connected by a support rod 43, a tension roller 23 and a guide roller 22 are arranged between the upper end plate 41 and the lower end plate 42, and the tension roller 23 and the guide roller 22 are both connected to the upper end plate 41 and the lower end plate 42 by bearings. The tension roller 23 is connected to a large gear 26, the guide roller 22 is connected to a small gear 27, and the large gear 26 is engaged with the small gear 27. The stay bar 43 is connected with the film stand 21 through a tension spring 44 to enable the tension roller 23 to press the film roll 25. The film 45 passes through the tensioning roller 23 and then passes through the guide roller 22 in the output process, gears connected to the tensioning roller 23 and the guide roller 22 are different in size, the rotation speed of the guide roller 22 is high, the rotation speed of the tensioning roller 23 is low, the film 45 passes through the tensioning roller 23 and then slowly flows out, the film passes through the guide roller 22 and quickly flows out, and the difference of the output speeds can generate tensioning force on the film 45, so that the film is in a tensioned state, and the compactness of the film during wrapping is increased.

In this embodiment, the turntable 2 and the base 1 are connected through a bearing, the power mechanism is a motor 3, a housing of the motor 3 is fixed to the base 1, and an output shaft of the motor 3 penetrates through the base 1 and is connected to the turntable 2. The rotation of the turntable 2 is realized under the driving of the motor 3.

A hydraulic rotary joint is arranged on the rotary table 2, the input end of the hydraulic rotary joint is connected with a pump station, and the output end of the hydraulic rotary joint is respectively connected with a hydraulic motor 15, a lifting cylinder 29 and a film breaking cylinder 31 through inlet and outlet pipelines. The hydraulic rotary joint is of an existing structure, and is a rotary joint specially used for low-speed high-pressure multi-medium and multi-channel equipment.

The specific working process is as follows: the trays 17 of the two groups of lifting material receiving mechanisms are all jacked up, the square bundles fall on the two trays 17, and the trays 17 are gradually retracted after material receiving, so that the square bundles gradually fall on the two upper carrier rollers 9 and the two lower carrier rollers 10. The tail end of a thin film of the film releasing mechanism is pressed by a pressing rod 36 of the film breaking mechanism in advance, the power mechanism and the driving mechanism are started, the turntable 2 carries two groups of material block bearing devices and the film breaking mechanism to rotate, and the two upper carrier rollers 9 and the two lower carrier rollers 10 start to rotate. The rotary table 2 realizes axial rotation of the square bundle, and the axial rotation of the square bundle is synchronously realized through the matching of the two upper carrier rollers 9 and the two lower carrier rollers 10. The film breaking mechanism presses the tail end of the film, the film is pulled along with the rotation of the rotary disc 2 and is unreeled, and the film is wound on the square bundle in the process. After the film is wound for several circles, the film breaking cylinder 31 is controlled to enable the two pressure rods 36 to be lifted to a certain height, and the pressing on the tail end of the film is released. The film is wound onto the square bale in a loop as the turntable 2 continues to rotate. When the film wrapping completion state is approached, the film breaking cylinder 31 is controlled to enable the two pressure rods 36 to be completely lifted and then fall down, the film is pressed to the position of the blade 35 along with the falling of the two pressure rods 36, the blade 35 cuts the film into sections, one end of the film, connected with the square bundle, is wound on the square bundle along with the continuous rotation of the turntable 2, and one end of the film, connected with the film placing mechanism, is pressed by the high pressure rod 36 so as to facilitate the next film winding. After the coating is finished, the rotating disc 2 stops rotating, and the square bundle is transferred through a forklift.

Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and shall also fall within the scope of the claims of the present invention.

Claims (10)

1. The utility model provides a film equipment is twined to blue or green fodder side bundle which characterized in that: the rotary table device comprises a base, a rotary table, a power mechanism and a control device, wherein the rotary table is positioned above the base and is rotationally connected with the base; two groups of material block bearing devices are arranged on the turntable and are symmetrically arranged; each group of material block bearing devices comprises two groups of supports which have the same structure and are respectively arranged on the front side and the rear side of the rotary table, each group of supports comprises an L-shaped connecting plate, each L-shaped connecting plate comprises a first connecting part and a second connecting part, one end of each second connecting part is fixed with the rotary table, one end of each upper swing arm is hinged with the first connecting part, one end of each lower swing arm is hinged with the second connecting part, the upper swing arms and the lower swing arms are connected through bidirectional threaded adjusting pull rods, one end of each bidirectional threaded adjusting pull rod is hinged with the upper swing arm, and the other end of each bidirectional threaded adjusting pull rod is hinged with the lower swing arm; an upper carrier roller is rotatably connected between the two upper swing arms of the front and rear groups of brackets, a lower carrier roller is rotatably connected between the two lower swing arms of the front and rear groups of brackets, and the two upper carrier rollers and the two lower carrier rollers synchronously rotate in the same direction under the driving of a driving mechanism; a lifting material receiving mechanism is arranged between the two groups of supports of each group of material block bearing devices; a film breaking mechanism is arranged on the turntable; the base is connected with a film placing mechanism.

2. The silage square bale wrapping apparatus of claim 1, wherein: the lifting type material receiving mechanism comprises a tray, rolling shafts are arranged on the tray, two support rods are hinged to the tray, the lower end of each support is hinged to a mounting plate, the mounting plate is connected between two L-shaped connecting plates of the two groups of supports, a cylinder barrel of a lifting cylinder is hinged to the mounting plate, and a push rod of the lifting cylinder is hinged to the tray.

3. The silage square bale wrapping apparatus of claim 2, wherein: the film breaking mechanism comprises a base connected with the rotary table, the base is connected with the rotary table through a bolt, a cylinder barrel of the film breaking cylinder is hinged with the base, a push rod of the film breaking cylinder is hinged with one end of a crank arm, the position of an inflection point of the crank arm is hinged with the base, the other end of the crank arm is hinged with the middle part of a pressing plate, one end of the pressing plate is connected with two pressing rods, the other end of the pressing plate is hinged with a swing arm, and the other end of the swing arm is hinged with the base; the blade is arranged on the crank arm, a gap is reserved between the two pressure rods, and the blade falls down by the two pressure rods and penetrates through the gap.

4. The silage square bale wrapping apparatus of claim 3, wherein: the two compression rods are higher and lower.

5. The silage square bale wrapping apparatus of claim 4, wherein: the cushion block is arranged below the high pressure rod, the guide rod is fixedly connected with the bottom surface of the cushion block, the guide rod penetrates through the crank arm, the adjusting spring is sleeved on the guide rod and located between the cushion block and the crank arm, and the lower end of the guide rod extends out of the crank arm and is in threaded connection with the adjusting nut.

6. The silage square bale wrapping apparatus of claim 1, wherein: the film releasing mechanism comprises a film standing support connected with the base, a film releasing roller is rotatably connected to the film standing support, a film roll is installed on the film releasing roller, and a film output guide mechanism is connected to the film standing support; the film output guide mechanism comprises an upper end plate and a lower end plate, the upper end plate and the lower end plate are both hinged with the film erecting support, the upper end plate and the lower end plate are connected through a support rod, a tension roller and a guide roller are arranged between the upper end plate and the lower end plate, and the tension roller and the guide roller are both connected with the upper end plate and the lower end plate through bearings; a large gear is connected to the tensioning roller, a small gear is connected to the guide roller, and the large gear is meshed with the small gear; the stay bar is connected with the vertical film support through a tension spring to enable the tension roller to compress the film roll.

7. The silage square bale wrapping apparatus of claim 3, wherein: the driving mechanism comprises two hydraulic motors, the two hydraulic motors are respectively arranged on the two groups of material block bearing devices and are fixed with the L-shaped connecting plate, driving gears are arranged on output shafts of the hydraulic motors, driven gears are arranged on each upper carrier roller and each lower carrier roller, and the driving gear on each hydraulic motor drives one upper carrier roller and one lower carrier roller to synchronously rotate in the same direction through chain transmission.

8. The silage square bale wrapping apparatus of claim 1, wherein: the turntable is connected with the base through a bearing, the power mechanism is a motor, a shell of the motor is fixed with the base, and an output shaft of the motor penetrates through the base and is connected with the turntable.

9. The silage square bale wrapping apparatus of claim 7, wherein: a hydraulic rotary joint is arranged on the rotary table, the input end of the hydraulic rotary joint is connected with a pump station, and the output end of the hydraulic rotary joint is respectively connected with a hydraulic motor, a lifting cylinder and a film breaking cylinder through an inlet and outlet pipeline.

10. Use of the square-wrapping film apparatus of any one of claims 1 to 9, comprising the steps of:

(1) the trays of the two groups of lifting material receiving mechanisms are jacked up, the square bundles fall on the two trays, and the trays are gradually retracted after material receiving, so that the square bundles gradually fall on the two upper carrier rollers and the two lower carrier rollers;

(2) the tail end of the film placing mechanism is pressed by a pressing rod of the film breaking mechanism in advance;

(3) starting a power mechanism and a driving mechanism, wherein the turntable carries two groups of material block bearing devices and a film breaking mechanism to rotate, and two upper carrier rollers and two lower carrier rollers start to rotate; the rotary table realizes axial rotation of the square bundle, and the square bundle rotates in the axial direction and synchronously realizes circumferential rotation of the square bundle through the matching of the two upper carrier rollers and the two lower carrier rollers;

(4) the film breaking mechanism presses the tail end of the film, the film can be pulled along with the rotation of the turntable and can be unreeled, and the film is wound on the square bundle in the process;

(5) after the film is wound for several circles, the film breaking cylinder is controlled to lift the two pressure rods to a certain height, and the pressing on the tail end of the film is released; the film is wound on the square bundle for one circle along with the continuous rotation of the turntable;

(6) when the film wrapping completion state is approached, the film breaking cylinder is controlled to enable the two pressure rods to be completely lifted and then fall down, the film is pressed to the position of the blade along with the falling of the two pressure rods, the blade cuts the film into sections, one end, connected with the square bundle, of the film is wound on the square bundle along with the continuous rotation of the rotary table, and one end, connected with the film placing mechanism, of the film is pressed by the high pressure rod to facilitate the next film winding;

(7) and after the film wrapping is finished, stopping rotating the rotary disc, and transferring the square bundle by using a forklift.

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