Header automatic profiling device and silage harvester

Abstract

The utility model discloses an automatic header profiling device which comprises a header assembly and a detection body arranged on the header assembly. The detection main body comprises a detection shell, a profiling structure which is hinged to the lower end part of the detection shell, is used for being attached to the ground and swings relative to the detection shell along with the change of the ground, and a flexible structure which is connected with the free end of the profiling structure and the detection shell and is used for fixing the maximum distance between the free end of the profiling structure and the detection shell; the profiling sensor is arranged in the detection shell, and the knuckle bearing assembly is connected with the end, close to the detection shell, of the profiling structure and the profiling sensor and used for transmitting the angle variation of the profiling structure swinging relative to the detection shell to the profiling sensor. The profiling sensor does not bear the acting force applied by the profiling structure any more, and the service life of the profiling sensor is long. In addition, the utility model further discloses a silage maize harvester comprising the header automatic profiling device.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to an automatic cutting platform profiling device. In addition, the utility model also relates to a silage machine comprising the automatic cutting platform profiling device. Background Art

[0002] When agricultural machinery is harvesting crops, it is often necessary to adjust the height between the cutting table and the ground to ensure the working effect. If the operator visually estimates the distance between the cutting table and the ground and controls the height of the cutting table by frequently operating the lifting lever, in the actual operation process, the operator needs to manually control the height of the cutting table while working. Such frequent operations will not only result in low harvesting efficiency and poor working results, but also cause operator fatigue and frequent misoperations. Therefore, the automatic contouring of the cutting table is usually used to free the operator.

[0003] For example, Chinese utility model patent CN217825997U discloses a corn combine harvester header profiling device, including a sensor mounting seat, an angle sensor is provided on the sensor mounting seat and a rotating frame is installed through a rotating shaft, the input end of the angle sensor is plugged into the rotating shaft, a lower support rod is hinged on the rotating frame and a torsion spring is provided, the two ends of the torsion spring are respectively clamped on the lower support rod and the rotating frame, so that the lower support rod is pressed tightly in the U-shaped notch provided at the lower end of the rotating frame. The beneficial effect is that the device can automatically feedback the angle signal to the harvester control system according to the undulation of the field ground, so that the harvester control system can automatically adjust the header height according to the feedback data, ensure that the cutting height is basically consistent during the harvesting operation, ensure the quality of corn harvesting, and avoid food waste; reduce the labor intensity of operators; avoid damage to the header caused by shoveling soil on the header, and properly solve the problem of high-quality harvesting of crops on uneven plots.

[0004] However, during the operation of the above-mentioned header profiling device, the sensor is easily directly subjected to various forces exerted by the profiling component, resulting in long-term or frequent overload, which leads to performance degradation, or even sensor failure or damage, and a short service life of the sensor. Utility Model Content

[0005] The utility model provides an automatic cutting platform profiling device and a silage machine, so as to solve the technical problems that the sensor in the existing automatic cutting platform profiling device is easy to fail or be damaged due to a large force and has a short service life.

[0006] According to one aspect of the utility model, there is provided an automatic profiling device for a cutting platform, comprising a cutting platform assembly and a detection body arranged on the cutting platform assembly, the detection body comprising a detection shell, a profiling structure hinged to the lower end of the detection shell for fitting to the ground and swinging relative to the detection shell as the ground changes, a flexible structure respectively connected to the free end of the profiling structure and the detection shell for fixing the maximum distance between the free end of the profiling structure and the detection shell, a profiling sensor arranged in the detection shell, and a joint bearing assembly respectively connected to the end of the profiling structure close to the detection shell and the profiling sensor for transmitting the angular change of the profiling structure relative to the detection shell to the profiling sensor.

[0007] As a further improvement of the above technical solution:

[0008] Furthermore, the joint bearing assembly includes a force transmission rod, a first joint bearing sleeved on the first end of the force transmission rod and connected to the end of the profiling structure close to the detection shell, a second joint bearing sleeved on the second end of the force transmission rod, and a swing arm respectively connected to the second joint bearing and the profiling sensor.

[0009] Further, the first joint bearing is threadedly connected to the force transmission rod; and / or the second joint bearing is threadedly connected to the force transmission rod.

[0010] Furthermore, the profiling structure includes a profiling arm, a connecting plate arranged on the free end of the profiling arm and connected to the flexible structure, a profiling splint connected to the end of the profiling arm close to the detection shell, a profiling bracket connected to the profiling splint and hinged to the detection shell, and a rocker arm respectively connected to the profiling bracket and the first joint bearing.

[0011] Furthermore, the detection body also includes a profiling pin arranged on the detection housing and hinged to the profiling bracket, and a fixing plate respectively connected to the profiling pin and the detection housing for preventing the profiling pin and the detection housing from rotating relative to each other.

[0012] Furthermore, the flexible structure includes a connecting belt, a first regulator arranged at a first end of the connecting belt and connected to a free end of the contoured structure, and a second regulator arranged at a second end of the connecting belt and connected to the detection housing.

[0013] Furthermore, a profiling cavity for accommodating the profiling sensor is provided on the detection shell, and a cover plate for closing the profiling cavity is detachably arranged on the side wall of the detection shell.

[0014] Furthermore, the detection body also includes a row assembly, which includes a row side plate arranged in a horizontal direction, a sensor clamp rotatably arranged on the detection shell and connected to the row side plate, a row sensor arranged on the detection shell and with a sensing end connected to the sensor clamp, a reset mounting plate arranged in the detection shell and maintaining a preset distance with the end of the sensor clamp away from the row side plate, and an elastic reset member connected to the end of the sensor clamp away from the row side plate and the reset mounting plate.

[0015] Furthermore, the detection body also includes a crop divider hinged to the detection housing and an adjusting member arranged in the detection housing and used to abut against the crop divider to limit the rotation angle of the crop divider.

[0016] According to another aspect of the utility model, a silage machine is also provided, which comprises the above-mentioned automatic cutting table profiling device.

[0017] The utility model has the following beneficial effects:

[0018] The utility model discloses an automatic cutting table profiling device, by arranging a detection body on the cutting table assembly, the detection body is hinged to the profiling structure through a detection shell, and a profiling sensor is installed in the detection shell, and a joint bearing assembly is respectively connected to the end of the profiling structure close to the detection shell and the profiling sensor, so that when the cutting table assembly is operating, the profiling structure fits the ground and swings relative to the detection shell as the ground changes, the joint bearing assembly swings synchronously, and synchronously transmits the angle change of the profiling structure relative to the swing of the detection shell to the profiling sensor, the profiling sensor converts the angle change into an electrical signal and transmits it to a controller on the silage machine, and the controller can judge whether it is necessary to execute the profiling action according to the received signal, that is, adjust the height of the cutting table assembly, so as to realize automatic profiling, improve working efficiency, reduce labor intensity and ensure working quality. At the same time, under the action of the joint bearing assembly, the profiling sensor is away from the force application point during the swinging process of the profiling structure, and no longer bears the force applied by the profiling structure, which greatly extends the service life. In the operation of the cutting table assembly, the flexible structure is respectively connected to the free end of the profiling structure and the detection shell to fix the maximum distance between the free end of the profiling structure and the detection shell, so as to keep the maximum swing angle of the profiling structure relative to the detection shell within a stable range to avoid interference caused by excessive swing angle. The scheme realizes automatic profiling through the coordinated cooperation of the detection shell, the profiling structure, the joint bearing assembly and the profiling sensor. Compared with the prior art, the profiling sensor no longer bears the force applied by the profiling structure. The profiling sensor has a long service life and strong practicality, and is suitable for wide promotion and application.

[0019] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0021] Figure 1 It is a structural schematic diagram of the automatic profiling device for a cutting table of a preferred embodiment of the utility model;

[0022] Figure 2 It is a partial structural schematic diagram of the automatic profiling device for the header of the preferred embodiment of the utility model;

[0023] Figure 3 It is a partial structural schematic diagram of the automatic profiling device for the header of the preferred embodiment of the utility model;

[0024] Figure 4 It is a partial structural schematic diagram of the automatic profiling device for the header of the preferred embodiment of the utility model;

[0025] Figure 5 It is a structural schematic diagram of the profiling structure in the automatic profiling device for a header in a preferred embodiment of the utility model;

[0026] Figure 6 It is a structural schematic diagram of a joint bearing assembly in a header automatic profiling device in a preferred embodiment of the utility model;

[0027] Figure 7 It is a partial structural schematic diagram of the automatic profiling device for the header of the preferred embodiment of the utility model;

[0028] Figure 8 It is a partial structural schematic diagram of the automatic profiling device for a cutting platform of a preferred embodiment of the utility model.

[0029] Legend:

[0030] 100, header assembly; 200, detection housing; 210, profiling pin; 220, fixing plate; 230, profiling cavity; 240, cover plate; 250, row cavity; 260, through cavity; 270, first mounting plate; 280, second mounting plate; 300, profiling structure; 310, connecting plate; 320, profiling arm; 330, profiling splint; 340, profiling bracket; 350, rocker arm; 400, flexible structure; 410, first adjustment Device; 420, connecting belt; 430, second regulator; 500, profiling sensor; 600, joint bearing assembly; 610, first joint bearing; 620, force transmission rod; 630, second joint bearing; 640, swing arm; 700, row assembly; 710, row side plate; 720, sensor clamp; 730, elastic reset member; 740, reset mounting plate; 750, row sensor; 800, crop divider; 900, adjustment member. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered below.

[0032] Figure 1 It is a structural schematic diagram of the automatic profiling device for a cutting table of a preferred embodiment of the utility model; Figure 2 It is a partial structural schematic diagram of the automatic profiling device for the header of the preferred embodiment of the utility model; Figure 3 It is a partial structural schematic diagram of the automatic profiling device for the header of the preferred embodiment of the utility model; Figure 4 It is a partial structural schematic diagram of the automatic profiling device for the header of the preferred embodiment of the utility model; Figure 5 It is a structural schematic diagram of the profiling structure in the automatic profiling device for a header in a preferred embodiment of the utility model; Figure 6 It is a structural schematic diagram of a joint bearing assembly in a header automatic profiling device in a preferred embodiment of the utility model; Figure 7 It is a partial structural schematic diagram of the automatic profiling device for the header of the preferred embodiment of the utility model; Figure 8 It is a partial structural schematic diagram of the automatic profiling device for a cutting platform of a preferred embodiment of the utility model.

[0033] like Figure 1 and Figure 2As shown, the automatic profiling device for a cutting platform of this embodiment includes a cutting platform assembly 100 and a detection body arranged on the cutting platform assembly 100, the detection body including a detection shell 200, a profiling structure 300 hinged to the lower end of the detection shell 200 for fitting to the ground and swinging relative to the detection shell 200 as the ground changes, a flexible structure 400 connected to the free end of the profiling structure 300 and the detection shell 200 respectively and used to fix the maximum distance between the free end of the profiling structure 300 and the detection shell 200, a profiling sensor 500 arranged in the detection shell 200, and a joint bearing assembly 600 connected to the end of the profiling structure 300 close to the detection shell 200 and the profiling sensor 500 respectively and used to transmit the angular change of the profiling structure 300 relative to the detection shell 200 to the profiling sensor 500. Specifically, the automatic profiling device for a cutting platform of the utility model is provided with a detection body on the cutting platform assembly 100, the detection body is hinged to the profiling structure 300 through the detection shell 200, and a profiling sensor 500 is installed in the detection shell 200, and the joint bearing assembly 600 is respectively connected to the end of the profiling structure 300 close to the detection shell 200 and the profiling sensor 500, so that when the cutting platform assembly 100 is operating, the profiling structure 300 is in contact with the ground and swings relative to the detection shell 200 as the ground changes, the joint bearing assembly 600 swings synchronously, and synchronously transmits the angle change of the profiling structure 300 relative to the detection shell 200 to the profiling sensor 500, the profiling sensor 500 converts the angle change into an electrical signal and transmits it to the controller on the silage machine, and the controller can determine whether it is necessary to perform the profiling action according to the received signal, that is, adjust the height of the cutting platform assembly 100, so as to realize automatic profiling, improve work efficiency, reduce labor intensity and ensure work quality. At the same time, under the action of the joint bearing assembly 600, the profiling sensor 500 is away from the force application point during the swinging process of the profiling structure 300, and no longer bears the force applied by the profiling structure 300, which greatly prolongs the service life. In addition, during the operation of the header assembly 100, the flexible structure 400 is respectively connected to the free end of the profiling structure 300 and the detection housing 200 to fix the maximum distance between the free end of the profiling structure 300 and the detection housing 200, so as to keep the maximum swing angle of the profiling structure 300 relative to the detection housing 200 within a stable range to avoid interference and obstruction caused by excessive swing angle. In this solution, the detection housing 200, the profiling structure 300, the joint bearing assembly 600 and the profiling sensor 500 cooperate with each other. While realizing automatic profiling, compared with the prior art, the profiling sensor 500 no longer bears the force applied by the profiling structure 300. The profiling sensor 500 has a long service life and strong practicality, and is suitable for wide promotion and application.It should be understood that the controller on the silage machine controls the header assembly 100 to perform the profiling action according to the signal transmitted by the profiling sensor 500, which is a well-known technology for those skilled in the art, that is, the specific structure of the controller and how the controller is connected to the profiling sensor 500 are all well-known technologies for those skilled in the art. Optionally, the profiling sensor 500 is electrically connected to the controller. It should be understood that when the free end of the profiling structure 300 swings toward the direction close to the detection housing 200, the flexible structure 400 undergoes flexible deformation so as not to interfere with the movement of the profiling structure 300. Optionally, two detection bodies are provided, symmetrically arranged at opposite ends of the header assembly 100. Optionally, a first mounting plate 270 for mounting the profiling sensor 500 is arranged in the detection housing 200.

[0034] like Figure 4 , Figure 6 and Figure 7 As shown, in this embodiment, the joint bearing assembly 600 includes a force transmission rod 620, a first joint bearing 610 sleeved on the first end of the force transmission rod 620 and connected to the end of the profiling structure 300 close to the detection housing 200, a second joint bearing 630 sleeved on the second end of the force transmission rod 620, and a swing arm 640 connected to the second joint bearing 630 and the profiling sensor 500 respectively. Specifically, the profiling structure 300, the first joint bearing 610, the force transmission rod 620, the second joint bearing 630 and the profiling sensor 500 are connected in sequence, so that when the profiling structure 300 swings relative to the detection housing 200, the first joint bearing 610, the force transmission rod 620, the second joint bearing 630 and the profiling sensor 500 swing synchronously, and the profiling sensor 500 collects the ups and downs information of the working ground in real time and transmits it to the controller on the silo to realize automatic profiling. Optionally, the swing arm 640 is connected to the interface component of the profiling sensor 500 through a connecting pin. Optionally, the connecting pins are respectively connected to the pin holes on the interface component of the profiling sensor 500 and the pin shaft cavity on the swing arm 640 to ensure that the interface component of the profiling sensor 500 and the swing arm 640 are relatively fixed. Optionally, the first joint bearing 610 is connected to the profiling structure 300 by bolts for easy disassembly. Optionally, the second joint bearing 630 is connected to the swing arm 640 by bolts for easy disassembly.

[0035] like Figure 5 As shown, in this embodiment, the first joint bearing 610 is threadedly connected to the force transmission rod 620. Specifically, the first joint bearing 610 is threadedly connected to the force transmission rod 620, so that the center distance between the first joint bearing 610 and the second joint bearing 630 can be adjusted by spiral movement to ensure reliable assembly.

[0036] like Figure 5As shown, in this embodiment, the second joint bearing 630 is threadedly connected to the force transmission rod 620. Specifically, the second joint bearing 630 is threadedly connected to the force transmission rod 620, so that the center distance between the first joint bearing 610 and the second joint bearing 630 can be adjusted by screw movement to ensure reliable assembly. Optionally, the force transmission rod 620 is a screw.

[0037] like Figure 4 and Figure 5 As shown, in this embodiment, the profiling structure 300 includes a profiling arm 320, a connecting plate 310 arranged on the free end of the profiling arm 320 and connected to the flexible structure 400, a profiling splint 330 connected to the end of the profiling arm 320 near the detection housing 200, a profiling bracket 340 connected to the profiling splint 330 and hinged to the detection housing 200, and a rocker arm 350 respectively connected to the profiling bracket 340 and the first joint bearing 610. Specifically, the free end of the profiling arm 320 is connected to the flexible structure 400 through the connecting plate 310, is hinged to the detection housing 200 through the profiling splint 330 and the profiling bracket 340, and is connected to the first joint bearing 610 through the rocker arm 350, so that the profiling arm 320 is attached to the ground and swings relative to the detection housing 200 with the change of the ground, and the first joint bearing 610 is driven to swing through the rocker arm 350, and then the angle change is transmitted to the profiling sensor 500, so as to realize automatic profiling. Optionally, the profiling arm 320 is a rubber arm to avoid interference and blocking through elastic deformation. Optionally, the profiling arm 320 is connected to the connecting plate 310 and the profiling clamping plate 330 respectively by bolts, so as to facilitate disassembly and assembly, so that the profiling arm 320 of corresponding specifications and shapes can be selected according to different ground conditions. Optionally, the rocker arm 350 is welded and fixed on the profiling bracket 340, with compact structure and reliable strength. Optionally, the profiling clamping plate 330 is welded and fixed on the profiling bracket 340, with compact structure and reliable strength. Optionally, the upper and lower end surfaces of the profiling arm 320 are arranged in a special shape, so that the profiling arm 320 at different heights can fit the contour of the detection housing 200 and the ground.

[0038] like Figure 4 As shown, in this embodiment, the detection body also includes a profiling pin 210 arranged on the detection housing 200 and hinged to the profiling bracket 340, and a fixing plate 220 respectively connected to the profiling pin 210 and the detection housing 200 for preventing the profiling pin 210 and the detection housing 200 from rotating relative to each other. Specifically, the detection housing 200 is hinged to the profiling bracket 340 through the profiling pin 210, and then respectively connected to the profiling pin 210 and the detection housing 200 through the fixing plate 220 to prevent the profiling pin 210 and the detection housing 200 from rotating relative to each other, thereby ensuring a compact structure and reliable strength.

[0039] like Figure 4As shown, in this embodiment, the flexible structure 400 includes a connecting belt 420, a first regulator 410 arranged at the first end of the connecting belt 420 and connected to the free end of the profiling structure 300, and a second regulator 430 arranged at the second end of the connecting belt 420 and connected to the detection housing 200. Specifically, the connecting belt 420 is connected to the free end of the profiling structure 300 through the first regulator 410, and then connected to the detection housing 200 through the second regulator 430, and then the length of the connecting belt 420 is adjusted by the first regulator 410 or the second regulator 430 to adjust the maximum swing angle of the profiling structure 300 relative to the detection housing 200. Optionally, the first regulator 410 is connected to the connecting plate 310 by bolts. Optionally, the second regulator 430 is connected to the detection housing 200 by bolts.

[0040] like Figure 2 and Figure 8As shown, in this embodiment, the detection body also includes a row assembly 700, which includes a row side plate 710 arranged in a horizontal direction, a sensor clamp 720 rotatably arranged on the detection shell 200 and connected to the row side plate 710, a row sensor 750 arranged on the detection shell 200 and with a sensing end connected to the sensor clamp 720, a reset mounting plate 740 arranged in the detection shell 200 and maintaining a preset distance from the end of the sensor clamp 720 away from the row side plate 710, and an elastic reset member 730 connected to the end of the sensor clamp 720 away from the row side plate 710 and the reset mounting plate 740. Specifically, the sensor clamping plate 720 is respectively connected to the row side plate 710 and the row sensor 750, so that the row side plate 710 drives the sensor clamping plate 720 to swing synchronously, so that the row sensor 750 swings accordingly, and the row sensor 750 converts the swing angle into an electrical signal and sends it to the controller of the silage machine, so that the silage machine rotates, and then the harvesting operation can be performed in a reasonable direction, and the end of the sensor clamping plate 720 away from the row side plate 710 and the reset mounting plate 740 are respectively connected through the elastic reset member 730, so that the elastic reset member 730 is synchronously applied to the elastic reset member 730 during the swinging process of the sensor clamping plate 720, and then the automatic reset is realized by the elastic reset member 730 during the automatic rowing process. Optionally, the sensor clamping plate 720 is detachably connected to the row side plate 710, so that when the row side plate 710 is damaged or not suitable for special terrain, the row side plate 710 can be quickly disassembled and replaced. Optionally, the sensor clamping plate 720 is connected to the interface component of the row sensor 750. Optionally, the pin hole on the interface component of the row sensor 750 and the pin shaft cavity on the sensor clamping plate 720 are connected by a connecting pin to ensure that the sensor frame and the interface component of the row sensor 750 are relatively fixed, ensuring stable signal transmission during operation. Optionally, the elastic reset member 730 is a spring. Optionally, one end of the elastic reset member 730 is connected to the reset mounting plate 740 by a bolt, and the other end is connected to the end of the sensor clamping plate 720 away from the row side plate 710 by a bolt. Optionally, a second mounting plate 280 for mounting the row sensor 750 is arranged in the detection housing 200.

[0041] like Figure 2As shown, in this embodiment, the detection body also includes a straw divider 800 hinged to the detection housing 200 and an adjustment member 900 arranged in the detection housing 200 and used to abut against the straw divider 800 to limit the rotation angle of the straw divider 800. Specifically, the straw divider 800 is used to divide the crops in the field into rows to facilitate harvesting operations, improve harvesting efficiency and operation quality, and then the adjustment member 900 is used to limit the rotation angle of the straw divider 800 within a reasonable range. Optionally, the adjustment member includes an adjustment plate and a limit bolt arranged on the adjustment plate and abutting against the straw divider 800. It should be understood that the specific structure of the straw divider 800 belongs to the well-known technology of those skilled in the art and will not be elaborated here.

[0042] like Figure 2 and Figure 3 As shown, in this embodiment, the detection housing 200 is provided with a profiling cavity 230 for accommodating the profiling sensor 500, and a cover plate 240 for closing the profiling cavity 230 is detachably arranged on the side wall of the detection housing 200. Specifically, the profiling sensor 500 is accommodated by the profiling cavity 230, and the profiling cavity 230 is closed by the cover plate 240 to protect the profiling sensor 500. Optionally, the detection housing 200 is further provided with a row-aligning cavity 250 for accommodating the row-aligning component 700, an adjustment cavity for accommodating the adjustment member 900, and a through cavity 260 for the moving knife on the header assembly 100 to pass through. Optionally, the profiling cavity 230, the row-aligning cavity 250, the adjustment cavity and the through cavity 260 are independent of each other, and the functions of each area do not affect each other, so as to realize automatic row alignment and automatic grain separation while automatically profiling, greatly improve the working efficiency, reduce the working intensity, and improve the working quality. Optionally, the cover plate 240 may also close the alignment cavity 250 , so as to facilitate maintenance of the contour sensor 500 and the alignment assembly 700 by disassembling the cover plate 240 .

[0043] The silage machine of this embodiment includes the above-mentioned header automatic profiling device. Specifically, by adopting the above-mentioned header automatic profiling device in the silage machine, the service life of the profiling sensor 500 is guaranteed while realizing automatic profiling, which is highly practical and suitable for wide promotion and application.

[0044] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A header automatic profiling device, comprising a header assembly (100) and a detection body arranged on the header assembly (100), characterized in that: The detection body comprises a detection housing (200), a profiling structure (300) hinged to the lower end of the detection housing (200) for fitting to the ground and swinging relative to the detection housing (200) as the ground changes, a flexible structure (400) respectively connected to the free end of the profiling structure (300) and the detection housing (200) for fixing the maximum distance between the free end of the profiling structure (300) and the detection housing (200), a profiling sensor (500) arranged in the detection housing (200), and a joint bearing assembly (600) respectively connected to the end of the profiling structure (300) close to the detection housing (200) and the profiling sensor (500) for transmitting the angular variation of the profiling structure (300) swinging relative to the detection housing (200) to the profiling sensor (500).

2. The automatic cutting platform profiling device according to claim 1, characterized in that: The joint bearing assembly (600) comprises a force transmission rod (620), a first joint bearing (610) sleeved on the first end of the force transmission rod (620) and connected to the end of the profiling structure (300) close to the detection housing (200), a second joint bearing (630) sleeved on the second end of the force transmission rod (620), and a swing arm (640) respectively connected to the second joint bearing (630) and the profiling sensor (500).

3. The automatic cutting platform profiling device according to claim 2, characterized in that: The first joint bearing (610) is threadedly connected to the force transmission rod (620); and / or The second joint bearing (630) is threadedly connected to the force transmission rod (620).

4. The automatic cutting platform profiling device according to claim 2, characterized in that: The profiling structure (300) comprises a profiling arm (320), a connecting plate (310) arranged on the free end of the profiling arm (320) and connected to the flexible structure (400), a profiling clamping plate (330) connected to the end of the profiling arm (320) close to the detection housing (200), a profiling bracket (340) connected to the profiling clamping plate (330) and hinged to the detection housing (200), and a rocker arm (350) respectively connected to the profiling bracket (340) and the first joint bearing (610).

5. The automatic cutting platform profiling device according to claim 4, characterized in that: The detection body also includes a profiling pin (210) arranged on the detection housing (200) and hinged to the profiling bracket (340), and a fixing plate (220) respectively connected to the profiling pin (210) and the detection housing (200) and used to prevent the profiling pin (210) and the detection housing (200) from rotating relative to each other.

6. The automatic cutting platform profiling device according to any one of claims 1 to 5, characterized in that: The flexible structure (400) comprises a connecting belt (420), a first regulator (410) arranged at a first end of the connecting belt (420) and connected to a free end of the contoured structure (300), and a second regulator (430) arranged at a second end of the connecting belt (420) and connected to a detection housing (200).

7. The automatic cutting platform profiling device according to any one of claims 1 to 5, characterized in that: A profiling cavity (230) for accommodating a profiling sensor (500) is provided on the detection housing (200), and a cover plate (240) for closing the profiling cavity (230) is detachably arranged on the side wall of the detection housing (200).

8. The automatic cutting platform profiling device according to any one of claims 1 to 5, characterized in that: The detection body also includes a row assembly (700), which includes a row side plate (710) arranged in a horizontal direction, a sensor clamp (720) rotatably arranged on the detection shell (200) and connected to the row side plate (710), a row sensor (750) arranged on the detection shell (200) and with a sensing end connected to the sensor clamp (720), a reset mounting plate (740) arranged in the detection shell (200) and maintaining a preset distance from the end of the sensor clamp (720) away from the row side plate (710), and an elastic reset member (730) connected to the end of the sensor clamp (720) away from the row side plate (710) and the reset mounting plate (740).

9. The automatic cutting platform profiling device according to any one of claims 1 to 5, characterized in that: The detection body further comprises a crop divider (800) hinged to the detection housing (200) and an adjustment member (900) arranged in the detection housing (200) and used to abut against the crop divider (800) to limit the rotation angle of the crop divider (800).

10. A silage machine, characterized in that: The invention comprises the automatic cutting platform profiling device as described in any one of claims 1 to 9.

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