A double fork four-rope baler

Abstract

The utility model discloses a double prong formula four way rope bundling machine, including gearbox, prong mechanism and compression bin mechanism, and prong mechanism includes prong power receiving wheel, prong crank connecting axle and feed rocker prong fork subassembly, and feed rocker prong fork subassembly includes feed rocker, a plurality of double prongs and prong center sleeve structure, and compression bin mechanism includes compression bin body, plunger pump, hydraulic oil tank, three -way solenoid valve, compression cylinder and touch control screen, the utility model discloses adopting double prong to pick material, can send the straw at the bottom of bundling machine to compression bin body upwards, can also stir the straw at the bottom and make it loose, plays two -stage prong function, makes prong mechanism conveying straw more relaxed, and it is difficult to jam, and the power of compression bin body volume change is provided by plunger pump, and plunger pump is directly driven by prong mechanism eccentric, simplifies power circuit, and the oil supply pipeline of each compression cylinder of plunger pump is realized through three -way solenoid valve.

Description

Technical Field

[0001] This utility model belongs to the field of baling machine technology, specifically relating to a double-fork type four-rope baling machine. Background Technology

[0002] A baler is an agricultural machine used to collect and bale straws and forage crops such as rice straw, wheat straw, cotton stalks, corn stalks, rapeseed stalks, peanut vines, and bean stalks. Common balers include corn stalk balers, wheat straw balers, and rice straw balers.

[0003] During the process of feeding straw and hay into the compression chamber using a single fork, the straw continues to be continuously fed into the frame by the pick-up device, causing it to accumulate at the bottom of the baler. When the amount of straw fed in is large or increases suddenly, excessive straw accumulation at the bottom easily forms clumps. As the fork feet of the baler feed the straw into the compression chamber, these clumps can easily clog the filling mechanism, thus affecting the machine's operating efficiency. Furthermore, the volume change of the compression chamber is achieved through a linkage structure, and the adjustment power is usually derived from the flywheel via a pulley. The pulley drives a gear pump, which supplies oil to the compression cylinder. This complex structure and the components in the oil supply line are prone to damage. Utility Model Content

[0004] This utility model provides a double-fork type four-rope baling machine to solve the shortcomings described in the prior art.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A double-fork four-rope baler includes a gearbox, a fork-pulling mechanism, and a compression chamber mechanism. The fork-pulling mechanism includes a fork-pulling power receiving wheel, a fork-pulling crank connecting shaft, and a feeding rocker fork assembly. The fork-pulling crank connecting shaft is connected to and rotates with the fork-pulling power receiving wheel. The feeding rocker fork assembly is mounted on the fork-pulling crank connecting shaft and can rotate relative to it. The feeding rocker fork assembly includes a feeding rocker, several double forks, and a fork-pulling center sleeve. The compression chamber mechanism includes a compression chamber body, a plunger pump, a hydraulic oil tank, a three-way solenoid valve, compression cylinders, and a touch control screen. The plunger of the plunger pump is eccentrically connected to the power receiving wheel of the fork, and the plunger pump reciprocates under the drive of the power receiving wheel. The low-pressure inlet of the plunger pump is connected to the outlet of the hydraulic oil tank, and the high-pressure outlet of the plunger pump supplies oil to each compression cylinder via the three-way solenoid valve. The three-way solenoid valve is communicatively connected to the touch control screen. The telescopic part of the compression cylinder is connected to the adjustable plate of the compression chamber body. The plunger pump is driven by the power receiving wheel of the fork mechanism, receiving power from the gearbox, eliminating the power transmission mechanism of the original gear pump that requires power transmission from the flywheel, simplifying the power transmission mechanism of the compression chamber body. Furthermore, the plunger pump structure is more compact, allowing for more flexible installation. Installed on the outside of the machine, it is also convenient for maintenance. The three-way solenoid valve can be controlled via the touch control screen to change the volume of the compression chamber body. The touch control screen can be placed directly in the cab for convenient driver operation.

[0007] As a preferred embodiment of this utility model, the grass-reeling fork crank connecting shaft includes a first connecting shaft, a first crank, a fork connecting shaft, a second crank, and a second connecting shaft; one end of the first connecting shaft is provided with a bearing, and this end of the first connecting shaft is splinedly connected to the grass-reeling fork power receiving wheel; the other end of the first connecting shaft is fixedly connected to one end of the first crank, the other end of the first crank is fixedly connected to one end of the fork connecting shaft, the other end of the fork connecting shaft is fixedly connected to one end of the second crank, the other end of the second crank is fixedly connected to one end of the second connecting shaft, and the other end of the second connecting shaft is provided with a bearing; the axes of the first connecting shaft and the second connecting shaft coincide. The outer side of the power receiving wheel of the fork has a protrusion, which is located at an eccentric position to connect with the plunger of the plunger pump. The power receiving wheel of the fork receives power from the gearbox. The rotation of the power receiving wheel of the fork drives the entire crank connecting shaft of the fork to rotate, and also drives the plunger pump to reciprocate linearly, thereby pressurizing the hydraulic oil. The feed rocker fork assembly installed on the fork connecting shaft will swing under the limiting action of the feed rocker, picking up the straw and sending it into the compression chamber.

[0008] As a preferred embodiment of this utility model, the grass-removing fork center sleeve structure includes a grass-removing fork center sleeve and a fork bearing. The grass-removing fork center sleeve is sleeved on the fork connecting shaft through the fork bearing. One end of the feeding rocker is fixedly mounted on the grass-removing fork center sleeve, and the other end of the feeding rocker is hinged to the frame. The double fork includes a fork mounting base and a double fork plate. The fork mounting base is fixed on the grass-removing fork center sleeve, and the double fork plate is mounted on the fork mounting base. The double fork plate has two fork feet, and the two fork feet are set at an acute angle. The double fork mechanism has two fork legs that move along a specific trajectory. One fork leg transports the straw from the bottom of the baler upwards to the compression chamber, while the other fork leg loosens the straw at the bottom, distributing it more evenly across the bottom of the machine. This makes the straw feeding mechanism easier and less prone to clogging. The additional fork legs significantly increase the feeding range and improve work efficiency. Furthermore, when the fork legs return to their original position, they do not follow the upward trajectory; instead, they move away from the inner wall of the baler during the return process, preventing the straw from accumulating into clumps.

[0009] As a preferred embodiment of this utility model, the compression chamber includes a fixed chamber and an adjustable chamber. The fixed chamber has a feeding opening facing the fork-pulling mechanism. The fixed chamber is connected to and supported by the main beam. The fixed chamber also serves as a moving channel for the piston, thereby compressing the hay fed into the fixed chamber by the fork-pulling mechanism through the feeding opening. A fixed blade is provided at the feeding opening, which works in conjunction with a moving blade on the piston to cut the hay.

[0010] The adjustable chamber includes an upper adjusting plate, a first side adjusting plate, a second side adjusting plate, a lower fixed plate, fixed corner brackets, and a compression mounting ring frame. One end of the fixed corner bracket is fixed to the wall of the fixed chamber, and the other end of the fixed corner bracket is fixed to the compression mounting ring frame. The four fixed corner brackets define a square channel, and the four fixed corner brackets are located at the four corners of the square channel. Compression cylinders are installed on the upper part and both sides of the inner side of the compression mounting ring frame. One end of the upper adjusting plate is hinged to the upper part of the fixed chamber by a pin, and the other end of the upper adjusting plate is connected to the piston rod of the upper compression cylinder. One end of the first side adjusting plate is hinged to one side of the fixed chamber by a pin, and the other end of the first side adjusting plate is connected to the piston rod of a compression cylinder on one side. One end of the second side adjusting plate is hinged to the other side of the fixed chamber by a pin, and the other end of the second side adjusting plate is connected to the piston rod of a compression cylinder on the other side.

[0011] In a preferred embodiment of this utility model, the distance between the upper adjusting plate and the lower fixed plate is 400mm-500mm; the distance between the first side adjusting plate and the second side adjusting plate is 600mm-900mm. The upper compression cylinder can change the distance between the upper adjusting plate and the lower fixed plate, thus changing the height of the bale to between 400-500mm; the compression cylinders on both sides can change the distance between the first side adjusting plate and the second side adjusting plate, thus changing the width of the bale to between 600mm-900mm. The final bale height is 400-500mm, and the width is 600-900mm.

[0012] As a preferred embodiment of this utility model, the oil inlet of the three-way solenoid valve is connected to the high-pressure oil outlet of the plunger pump through a pipeline. The first outlet of the three-way solenoid valve is connected to the first oil pipeline, which is connected to a return oil pipeline and several branch oil pipelines. Each branch oil pipeline is connected to the inlet and outlet of a compression cylinder. The return oil pipeline is connected to the oil inlet of the hydraulic oil tank after passing through a manual valve. The second outlet of the three-way solenoid valve is connected to the oil inlet of the hydraulic oil tank through a pressure relief pipeline.

[0013] As a preferred embodiment of this utility model, a knotting mechanism is installed on the top of the fixed compartment, and the knotting mechanism is provided with four knotters.

[0014] As a preferred embodiment of this utility model, a rope box is provided on each side of the fixed compartment.

[0015] This invention employs a double-fork mechanism with two fork feet for material handling. This mechanism can transport straw from the bottom of the baler upwards to the compression chamber, and also loosen the straw at the bottom, acting as a secondary fork. This makes the straw-pulling mechanism easier to transport straw and less prone to clogging. The power to change the volume of the compression chamber is provided by a plunger pump, which is directly driven eccentrically by the straw-pulling mechanism, simplifying the power circuit. Furthermore, the oil supply lines from the plunger pump to each compression cylinder are achieved through a three-way solenoid valve, allowing the driver to operate the system via a touch controller in the cab. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2This is a schematic diagram of the assembly of the grass-removing fork mechanism and the fixed bin body of this utility model.

[0019] Figure 3 This is a schematic diagram of the assembly of the grass-removing fork mechanism and the plunger pump of this utility model.

[0020] Figure 4 This is a top view of the assembly of the grass-reeling fork mechanism and the plunger pump of this utility model.

[0021] Figure 5 for Figure 4 Sectional view along the AA direction.

[0022] Figure 6 This is a schematic diagram of the compression chamber of this utility model.

[0023] Figure 7 This is a rear side view of the compression chamber of this utility model.

[0024] Figure 8 This is a schematic diagram of the oil circuit control of this utility model. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example:

[0027] A double-fork type four-rope baler, such as Figure 1 As shown, it includes a gearbox 1, a fork mechanism 2, and a compression chamber mechanism 3. The gearbox receives power from the tractor and transmits the tractor's power backward to the pickup mechanism, piston mechanism, knotter mechanism, and fork mechanism.

[0028] This embodiment mainly modifies the forklift mechanism and the compression chamber mechanism, while the rest of the structure remains unchanged.

[0029] like Figure 2-5 As shown, the grass-removing fork mechanism 2 includes a grass-removing fork power receiving wheel 21, a grass-removing fork crank connecting shaft, and a feeding rocker fork assembly;

[0030] The aforementioned crank connecting shaft of the grass-picking fork, such as Figure 3-5As shown, it includes a first connecting shaft 221, a first crank 222, a shift fork connecting shaft 223, a second crank 224, and a second connecting shaft 225; one end of the first connecting shaft 221 is provided with a bearing, which passes through the frame and is splinedly connected to the hoe fork power receiving wheel 21; the first connecting shaft is a splined shaft, and the hoe fork power receiving wheel 21 is used to receive power from the gearbox.

[0031] The other end of the first connecting shaft 221 is fixedly connected to one end of the first crank 222. The other end of the first crank 222 is fixedly connected to one end of the shift fork connecting shaft 223. The other end of the shift fork connecting shaft 223 is fixedly connected to one end of the second crank 224. The other end of the second crank 224 is fixedly connected to one end of the second connecting shaft 225. The other end of the second connecting shaft 225 is provided with a bearing, which is used to mount the shaft on the frame. The axes of the first connecting shaft 221 and the second connecting shaft 225 coincide.

[0032] The feeding rocker fork assembly is mounted on the fork connecting shaft 223 and can rotate relative to the fork connecting shaft 223. The feeding rocker fork assembly includes a feeding rocker 231, five double forks 232, and a fork center sleeve structure. The fork center sleeve structure includes a fork center sleeve 233 and a fork bearing 234. The fork center sleeve 233 is sleeved on the fork connecting shaft 223 through the fork bearing 234. One end of the feeding rocker 231 is fixedly mounted on the fork center sleeve 233, and the other end of the feeding rocker 231 is hinged to the frame. The double forks 232 include a fork mounting base 2321 and double fork plates 2322. The fork mounting base 2321 is fixed on the fork center sleeve 233, and the double fork plates 2322 are mounted on the fork mounting base 2321. The double fork plates 2322 have two fork feet 2323, which are set at an acute angle.

[0033] The power receiving wheel 21 of the hay-reeling fork receives power from the gearbox and rotates. The rotation of the power receiving wheel 21 drives the entire hay-reeling fork crank connecting shaft to rotate. Because the hay-reeling fork center sleeve 233 is connected to the fork bearing, the center sleeve 233, the double forks mounted on it, and the feeding rocker arm can all rotate relative to the fork connecting shaft 223. However, the other end of the feeding rocker arm is hinged and can rotate around the hinge point. Therefore, the center sleeve 233 of the hay-reeling fork will swing under the rotation of the feeding rocker arm and the fork connecting shaft 223. This allows the double forks to swing up and down, feeding the hay, and the two fork legs of the double forks will follow a certain trajectory. The baler operates by having one fork lift the straw from the bottom to the compression chamber, while the other fork loosens the straw at the bottom and lifts it up so that the upper fork can lift it up as well. This secondary fork action ensures that the straw is evenly distributed throughout the bottom of the machine, making the straw feeding mechanism easier and less prone to clogging. The additional forks significantly increase the feeding range and improve efficiency. Furthermore, when the forks return to their original position, they do not follow the upward trajectory; instead, they move away from the inner wall of the baler, preventing the straw from accumulating.

[0034] like Figure 6 and 7 As shown, the compression chamber mechanism 3 includes a compression chamber body 31, a plunger pump 32, a hydraulic oil tank 39, a three-way solenoid valve 33, a compression cylinder 38, and a touch control screen; the plunger of the plunger pump 32 is connected to the protrusion on the power receiving wheel 21 of the grass-reeling fork, and the protrusion is located at the eccentric position of the power receiving wheel 21 of the grass-reeling fork, which drives the plunger pump to reciprocate linearly to pressurize the hydraulic oil.

[0035] The plunger pump 32 reciprocates under the drive of the power receiving wheel 21 of the grass-reeling fork.

[0036] The compression chamber 31 includes a fixed chamber 311 and an adjustable chamber 312. The fixed chamber 311 has a feeding opening facing the grass-reeling fork mechanism 2. The fixed chamber 311 is connected to and supported by the main beam. The fixed chamber serves as a moving channel for the piston, thereby compressing the grass fed into the fixed chamber by the grass-reeling fork mechanism through the feeding opening. A fixed blade is provided at the feeding opening, which works with the moving blade on the piston to cut the grass.

[0037] A knotting mechanism is installed on the top of the fixed compartment 311. The knotting mechanism is equipped with four knotters 4, and a rope box 5 is respectively installed on both sides of the fixed compartment 311.

[0038] The adjustable compartment 312 includes an upper adjusting plate 3121, a first side adjusting plate 3122, a second side adjusting plate 3123, a lower fixed plate, fixed corner brackets 3124, and a compression mounting ring frame 3125. One end of the fixed corner bracket 3124 is fixed to the wall of the fixed compartment, and the other end of the fixed corner bracket 3124 is fixed to the compression mounting ring frame 3125. The four fixed corner brackets 3124 define a square channel, and the four fixed corner brackets are located at the four corners of the square channel. Compression cylinders are installed on the upper part of the inner side and both sides of the compression mounting ring frame 3125, namely an upper compression cylinder, a first side compression cylinder, and a second side compression cylinder.

[0039] One end of the upper adjusting plate 3121 is hinged to the upper part of the fixed chamber 311 by a pin, and the other end of the upper adjusting plate 3121 is connected to the piston rod of the upper compression cylinder. Multiple upper adjusting plates can be provided, and each upper adjusting plate is hinged to the connection between it and the fixed chamber. At the compression mounting ring frame 3125, a connecting plate is used to connect them together. The connecting rod is connected to the piston rod of the two upper compression cylinders. The two upper compression cylinders are vertically fixed to the inner side of the upper part of the compression mounting ring frame 3125.

[0040] One end of the first side adjustment plate 3122 is hinged to one side of the fixed chamber 311 by a pin, and the other end of the first side adjustment plate 3122 is connected to the piston rod of the first side compression cylinder.

[0041] One end of the second side adjusting plate 3123 is hinged to the other side of the fixed chamber 311 by a pin, and the other end of the second side adjusting plate 3123 is connected to the piston rod of the second side compression cylinder.

[0042] With the direction of the forage conveyed along the compression chamber as the X direction, the setting direction and extension direction of the upper compression cylinder as the Y direction, and the setting direction and extension direction of the first and second side compression cylinders as the Z direction, the extension and retraction directions of the first and second side compression cylinders are opposite to each other.

[0043] like Figure 8 As shown, the low-pressure inlet of the plunger pump 32 is connected to the outlet of the hydraulic oil tank. A manual valve 38 is installed on the pipeline between the outlet of the hydraulic oil tank and the plunger pump 32. During maintenance, the manual valve can be closed to cut off the entire oil circuit.

[0044] The high-pressure outlet of the plunger pump 32 is connected to the inlet of the three-way solenoid valve 33 via a pipeline. The first outlet of the three-way solenoid valve 33 is connected to the first oil pipeline 35. The first oil pipeline 35 is connected to a return oil pipeline 36 and several distribution oil pipelines 37. In this embodiment, four compression cylinders are provided: two upper compression cylinders, one first side compression cylinder, and one second compression cylinder. Accordingly, four distribution oil pipelines 37 are provided. The first oil pipeline 35 is connected to the compression cylinders via an oil passage pipeline and a three-way valve. The system is as follows: the first oil pipe 35 serves as the main pipe, the branch oil pipes serve as parallel branch pipes, and one outlet of the three-way valve at the last compression cylinder is connected to the return oil pipe 36. A manual valve 38 is installed on the return oil pipe 36, and after passing through the manual valve, it is connected to the oil inlet of the hydraulic oil tank 39. The second outlet of the three-way solenoid valve 33 is also connected to the oil inlet of the hydraulic oil tank 39 through the pressure relief pipe. That is, a three-way valve is also installed at the oil inlet of the hydraulic oil tank, connecting the return oil pipe, the three-way solenoid valve and the hydraulic oil tank.

[0045] The three-way solenoid valve is controlled by the touch control screen. The compression cylinder is a one-way cylinder. When the first outlet of the three-way solenoid valve 33 is open and the second outlet is closed, the first outlet of the three-way solenoid valve 33 supplies oil to the inlet and outlet of each compression cylinder through the first oil line 35. The piston rod of the compression cylinder extends the compression adjustment plate, and after adjusting the size of the compression chamber, it is maintained.

[0046] When it is necessary to increase the size of the compression chamber, open the manual valve on the return oil line and close the first outlet of the three-way solenoid valve 33. The hydraulic oil of the one-way compression cylinder returns to the first oil line along the inlet and outlet oil ports, and then flows back to the hydraulic oil tank through the first oil line and the return oil line.

[0047] When overpressure occurs, the second outlet of the three-way solenoid valve opens, and the hydraulic oil from the plunger pump returns directly to the hydraulic oil tank from the second outlet of the three-way solenoid valve, thereby relieving pressure in the oil circuit.

[0048] The upper compression cylinder can change the distance between the upper adjusting plate 3121 and the lower fixed plate, that is, change the height of the bale, so that the height is between 400-500mm; the compression cylinders on both sides can change the distance between the first side adjusting plate 3122 and the second side adjusting plate (3123), that is, change the width of the bale, so that the width is between 600mm-900mm. The final bale height is between 400-500mm and the width is between 600-900mm.

[0049] In this specification, the terms "an embodiment," "example," "specific example," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A double fork four-rope baler comprising a gearbox (1), a forking mechanism (2) and a compression chamber mechanism (3), characterized in that: The grass poking mechanism (2) comprises a grass poking power receiving wheel (21), a grass poking crank connecting shaft and a feeding rocker poking fork assembly; the grass poking crank connecting shaft is connected with the grass poking power receiving wheel (21) and rotates with the grass poking power receiving wheel (21); the feeding rocker poking fork assembly is installed on the grass poking crank connecting shaft and can rotate relative to the grass poking crank connecting shaft; the feeding rocker poking fork assembly comprises a feeding rocker (231), a plurality of double poking forks (232) and a grass poking center sleeve structure; the compression bin mechanism (3) comprises a compression bin body (31), a plunger pump (32), a hydraulic oil tank, a three-way electromagnetic valve, a compression oil cylinder and a touch control screen; the plunger of the plunger pump (32) is eccentrically connected with the grass poking power receiving wheel (21), the plunger pump (32) reciprocates under the driving of the grass poking power receiving wheel (21), the low-pressure oil inlet of the plunger pump (32) is communicated with the oil outlet of the hydraulic oil tank, the high-pressure oil outlet of the plunger pump (32) supplies oil to each compression oil cylinder through the three-way electromagnetic valve, the three-way electromagnetic valve is in communication connection with the touch control screen; the telescopic part of the compression oil cylinder is connected with the adjustable plate of the compression bin body (31).

2. The dual fork four-rope baler of claim 1, characterized by: The grass poking crank connecting shaft comprises a first connecting shaft (221), a first crank (222), a poking fork connecting shaft (223), a second crank (224) and a second connecting shaft (225); one end of the first connecting shaft (221) is provided with a bearing, and the end of the first connecting shaft (221) is splined connected with the grass poking power receiving wheel (21); the other end of the first connecting shaft (221) is fixedly connected with one end of the first crank (222), the other end of the first crank (222) is fixedly connected with one end of the poking fork connecting shaft (223), the other end of the poking fork connecting shaft (223) is fixedly connected with one end of the second crank (224), the other end of the second crank (224) is fixedly connected with one end of the second connecting shaft (225), and the other end of the second connecting shaft (225) is provided with a bearing; the first connecting shaft (221) and the second connecting shaft (225) are coaxial.

3. The dual fork four-rope baler of claim 2, characterized by: The grass poking center sleeve structure comprises a grass poking center sleeve (233) and a poking fork bearing (234), the grass poking center sleeve (233) is sleeved on the poking fork connecting shaft (223) through the poking fork bearing (234), one end of the feeding rocker (231) is fixedly arranged on the grass poking center sleeve (233), and the other end of the feeding rocker (231) is hingedly connected to the large frame; the double poking fork (232) comprises a poking fork mounting seat (2321) and a double poking fork piece (2322), the poking fork mounting seat (2321) is fixed on the grass poking center sleeve (233), and the double poking fork piece (2322) is installed on the poking fork mounting seat (2321); the double poking fork piece (2322) has two poking fork legs (2323), and the two poking fork legs (2323) are arranged at an acute angle.

4. The dual fork four-rope baler of claim 3, characterized in that: The compression bin body (31) comprises a fixed bin body (311) and an adjustable bin body (312), the adjustable bin body (312) comprises an upper adjusting plate (3121), a first side adjusting plate (3122), a second side adjusting plate (3123), a lower fixed plate, fixed corner supports (3124) and a compression mounting ring frame (3125); one end of the fixed corner support (3124) is fixed on the fixed bin body wall, the other end of the fixed corner support (3124) is fixed on the compression mounting ring frame (3125), four fixed corner supports (3124) define a square channel, and the four fixed corner supports are located at the four corner positions of the square channel; the inner side upper part and both sides of the compression mounting ring frame (3125) are provided with compression oil cylinders; one end of the upper adjusting plate (3121) is hingedly connected to the upper part of the fixed bin body (311) through a pin shaft, the other end of the upper adjusting plate (3121) is connected with the piston rod of the compression oil cylinder of the upper part; one end of the first side adjusting plate (3122) is hingedly connected to one side of the fixed bin body (311) through a pin shaft, the other end of the first side adjusting plate (3122) is connected with the piston rod of the compression oil cylinder of the one side; one end of the second side adjusting plate (3123) is hingedly connected to the other side of the fixed bin body (311) through a pin shaft, the other end of the second side adjusting plate (3123) is connected with the piston rod of the compression oil cylinder of the other side.

5. The dual fork four-rope baler of claim 4, characterized in that: The distance between the upper adjusting plate (3121) and the lower fixed plate is 400mm-500mm; the distance between the first side adjusting plate (3122) and the second side adjusting plate (3123) is 600mm-900mm.

6. The dual fork four-rope baler of claim 4 or 5, characterized in that: The oil inlet of the three-way electromagnetic valve (33) is communicated with the high-pressure oil outlet of the plunger pump (32) through a pipeline, the first outlet of the three-way electromagnetic valve (33) is communicated with the first oil pipeline (35), the first oil pipeline (35) is communicated with the oil return pipeline (36) and a plurality of oil distribution pipelines (37), each oil distribution pipeline (37) is communicated with the oil inlet and outlet of one compression oil cylinder; the oil return pipeline (36) is communicated with the oil inlet of the hydraulic oil tank through a hand valve (38); the second outlet of the three-way electromagnetic valve (33) is communicated with the oil inlet of the hydraulic oil tank through a pressure relief pipeline.

7. The dual fork four-rope baler of claim 6, characterized in that: A knotting mechanism is installed on the top of the fixed bin body (311), the knotting mechanism is provided with four knotting devices (4).

8. The dual fork four-rope baler of claim 7, characterized by: A rope box (5) is arranged on each side of the fixed bin body (311).

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