Crushing device gap adjusting system and silage harvester

Abstract

The utility model relates to the technical field of silage maize harvesters, in particular to a crushing device gap adjusting system and a silage maize harvesters, the system comprises a hydraulic oil tank, an oil supplementing pump, an adjusting valve, a driving device, a plurality of adjusting oil cylinders, a first crushing roller device and a second crushing roller device, the adjusting valve comprises a valve sleeve and a valve rod, and a plurality of containing cavities are formed in the valve sleeve; the valve rod is installed on the valve sleeve, and the driving device can drive the valve rod to move in the multiple containing cavities at the same time. An oil inlet and a plurality of oil outlets are formed in the valve sleeve, the oil inlet communicates with the containing cavities, and the oil outlets correspond to the containing cavities one to one; oil inlets of the oil tank, the oil supplementing pump and the adjusting valve are communicated through pipelines; oil inlets of the plurality of adjusting oil cylinders are in one-to-one correspondence with the plurality of oil outlets and are communicated with the plurality of oil outlets through pipelines; a piston rod of the adjusting oil cylinder is used for driving the first crushing roller device to move relative to the second crushing roller device so as to change a gap therebetween. The system can be used for adjusting the gap of the grain crushing device.

Description

Technical Field

[0001] This application relates to the technical field of silage harvesters, and particularly to a gap adjustment system for a crushing device and a silage harvester. Background Art

[0002] With the rapid development of the breeding industry, silage harvesting machinery is more and more widely used. It has powerful functions, and its overall functional structure and hydraulic principle are relatively complex, but the electric and hydraulic drives are convenient to operate and the working speed is fast. In addition, a silage harvester can cut and compact raw materials such as crop seeds, straws, and weeds, and transport them to a transport truck through a throwing cylinder, which not only solves the problem of difficult straw harvesting, but also provides high-quality feed raw materials for livestock such as cattle and sheep. It is an indispensable mechanical equipment for modern agriculture and animal husbandry. Among them, the seed crushing device is the core device of the silage harvesting machinery. In order to adapt to different harvesting scenarios and obtain feed raw materials with different requirements, it is necessary to realize a function of adjusting the gap of the seed crushing device. Utility Model Content

[0003] The purpose of this application is to provide a gap adjustment system for a crushing device and a silage harvester, which to a certain extent solves the technical problem in the prior art that there is an urgent need to develop a silage harvesting machinery with the function of being able to adjust the gap of the seed crushing device.

[0004] This application provides a gap adjustment system for a crushing device, including: a hydraulic oil tank, a makeup oil pump, an adjustment valve, a driving device, a plurality of adjustment cylinders, a first crushing roller device, and a second crushing roller device; wherein, the adjustment valve includes a valve sleeve and a valve rod, a plurality of accommodating cavities are formed in the valve sleeve at intervals in sequence, the valve rod is installed in the valve sleeve, and the driving device can drive the valve rod to move in a plurality of the accommodating cavities simultaneously;

[0005] The valve sleeve is formed with an oil inlet and a plurality of oil outlets, the oil inlet is respectively communicated with a plurality of the accommodating cavities, and the plurality of oil outlets correspond to and are respectively communicated with the plurality of accommodating cavities; the oil tank, the makeup oil pump, and the oil inlet of the adjustment valve are communicated via pipelines;

[0006] The oil inlets of the plurality of adjustment cylinders correspond to and are respectively communicated with the plurality of oil outlets of the valve sleeve via pipelines; the first crushing roller device is movably installed at a first target location, the second crushing roller device is installed at a second target location, and the piston rod of the adjustment cylinder is used to drive the first crushing roller device to move towards the second crushing roller device to change the gap between the two.

[0007] In the above technical solution, further, the gap adjustment system for the crushing device further includes a spring pre-tightening and resetting mechanism, and the number of the pre-tightening and resetting mechanisms is equal to and corresponds to the number of the adjustment cylinders;

[0008] The first crushing roller device is installed on the first target through a plurality of the spring preloading and resetting mechanisms, and the piston rod of the adjusting oil cylinder can extend and push the first crushing roller device to move away from the second crushing roller device against the preloading force of the preloading spring of the spring preloading and resetting mechanism. When the piston rod of the adjusting oil cylinder contracts, the first crushing roller device resets under the restoring force of the preloading spring of the spring preloading and resetting mechanism.

[0009] In any of the above technical solutions, further, the spring preloading and resetting mechanism includes a fixed member, a slide rail, a mounting seat, a support rod, the preloading spring, and a shielding member; wherein, the fixed member and the slide rail are both fixed to the first target; the first crushing roller device is connected to the mounting seat;

[0010] One end of the support rod is fixedly connected to the mounting seat, and the other end of the support rod is movably inserted into a first mounting through hole formed by the fixed member; the preloading spring is sleeved outside the support rod and is compressed between the fixed member and a limiting convex portion formed by the outer circumference of the support rod;

[0011] The shielding member is fixed to the slide rail and is located between the fixed member and the mounting seat; the shielding member is formed with a second mounting through hole, and the support rod is movably inserted into the second mounting through hole.

[0012] In any of the above technical solutions, further, the spring preloading and resetting mechanism further includes a support frame, the fixed member and the slide rail are both fixed to the support frame, and the support frame is fixed to the first target.

[0013] In any of the above technical solutions, further, the spring preloading and resetting mechanism further includes a lubricating sleeve, and the lubricating sleeve is arranged in the first mounting through hole of the fixed member and is slidably connected with the support rod.

[0014] In any of the above technical solutions, further, the volume change amount of any of the accommodating cavities is the same.

[0015] In any of the above technical solutions, further, the valve stem includes a working rod portion and a connecting rod portion which are connected; wherein, a part of the structure of the working rod portion is sequentially arranged in the accommodating cavity, and another part of the structure of the working rod portion and the connecting rod portion are both arranged outside the valve sleeve.

[0016] In any of the above technical solutions, further, along the direction of the valve sleeve toward the driving device, the working rod portion includes multiple sections of the rod portion, and the number of the multiple sections of the rod portion is equal to the number of the multiple accommodating cavities, and the radius of the nth section of the rod portion is n is an integer greater than or equal to 1, and r is a preset radius value.

[0017] In any of the above technical solutions, further, the number of the adjusting oil cylinders is two, and they are respectively arranged on both sides of the first crushing roller device; the number of the accommodating chambers and the oil outlets is also two, and they correspond one-to-one to the two adjusting oil cylinders.

[0018] In any of the above technical solutions, further, the size of each of the accommodating cavities is the same.

[0019] In any of the above technical solutions, further, the driving device is a stepping motor.

[0020] The present application also provides a silage machine, comprising the crushing device gap adjustment system described in any of the above technical solutions, and thus having all the beneficial technical effects of the crushing device gap adjustment system, which will not be repeated here.

[0021] In any of the above technical solutions, further, the box cover is formed with a flange, the flange is in contact with the liquid cooling plate, and the flange, the liquid cooling plate, the surrounding frame and the bottom support plate are detachably connected via a fastening member.

[0022] In any of the above technical solutions, further, a side of the flange facing away from the liquid cooling plate is formed with connected support ribs and mounting columns, and the silage machine also includes a lifting ear, which is installed on the top of the support rib and the mounting column and is detachably connected to the mounting column through a fastening member; the number of the mounting columns is at least three.

[0023] In any of the above technical solutions, further, the box cover is made of plastic.

[0024] Compared with the prior art, the beneficial effects of this application are:

[0025] The gap adjustment system of the crushing device can be used to adjust the gap between the two crushing roller devices. The operation is simple and convenient, saving time and effort, and improving the user experience. It does not use an ultra-large and complex motor for direct drive, but converts the mechanical energy of a small drive device such as a motor into a larger hydraulic energy as a drive source. It can provide a larger driving force, thereby realizing the driving of the crushing roller device, reducing equipment costs. The system occupies a small space and has a more flexible layout. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 Structural schematic diagram of the gap adjustment system for the crushing device provided by the embodiment of the present application;

[0028] Figure 2 Structural schematic diagram of the spring pre-tightening and reset mechanism provided by the embodiment of the present application.

[0029] Reference numerals:

[0030] 1 - hydraulic oil tank, 2 - make-up oil pump, 3 - adjustment valve, 31 - valve sleeve, 311 - accommodating cavity, 3111 - first accommodating cavity, 3112 - second accommodating cavity, 32 - valve rod, 321 - working rod part, 3211 - first section rod part, 3212 - second section rod part, 322 - connecting rod part, 33 - guide sleeve, 4 - driving device, 5 - adjustment oil cylinder, 6 - first crushing roller device, 7 - second crushing roller device, 8 - spring pre-tightening and reset mechanism, 81 - fixing member, 82 - slide rail, 83 - mounting seat, 84 - support rod, 841 - limiting projection part, 85 - pre-tightening spring, 86 - shielding member, 87 - lubricating sleeve, 88 - slider. Specific embodiments

[0031] The following will clearly and completely describe the technical solutions of the present application in conjunction with the drawings. Obviously, the described embodiments are some embodiments of the present application, rather than all embodiments.

[0032] Generally, the components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application to be protected, but merely represents the selected embodiments of the present application.

[0033] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0034] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0035] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0036] The following refers to Figure 1 and Figure 2 describe a gap adjustment system for a crushing device and a forage harvester according to some embodiments of the present application.

[0037] Embodiment 1

[0038] Refer to Figure 1 As shown, an embodiment of the present application provides a gap adjustment system for a crushing device, including: a hydraulic oil tank 1, a make-up oil pump 2, an adjustment valve 3, a driving device 4, a plurality of adjustment cylinders 5, a first crushing roller device 6, and a second crushing roller device 7; wherein, the adjustment valve 3 includes a valve sleeve 31 and a valve rod 32. A plurality of accommodating cavities 311 are formed in the valve sleeve 31 at intervals in sequence. The valve rod 32 is installed in the valve sleeve 31, and the driving device 4 can drive the valve rod 32 to move in a plurality of accommodating cavities 311 simultaneously;

[0039] The valve sleeve 31 is formed with an oil inlet and a plurality of oil outlets. The oil inlet is respectively communicated with a plurality of accommodating cavities 311, and the plurality of oil outlets correspond to and are respectively communicated with the plurality of accommodating cavities 311; the oil tank, the make-up oil pump 2, and the oil inlet of the adjustment valve 3 are communicated via pipelines;

[0040] The oil inlets of the plurality of adjustment cylinders 5 correspond to and are communicated with the plurality of oil outlets of the valve sleeve 31 via pipelines; the first crushing roller device 6 is movably installed at a first target location, the second crushing roller device 7 is installed at a second target location, and the piston rod of the adjustment cylinder 5 is used to drive the first crushing roller device 6 to move relative to the second crushing roller device 7 to change the gap therebetween.

[0041] According to the structure described above, the working process of the gap adjustment system of the crushing device provided by this application is as follows:

[0042] The hydraulic oil of the entire hydraulic system is sucked and filled with oil by the makeup oil pump 2 from the hydraulic oil tank 1; the adjustment valve 3 is composed of a valve stem 32 and a valve sleeve 31 of the adjustment valve 3. The valve sleeve 31 is further divided into multiple accommodating cavities 311, that is, multiple working cavities. Preferably, the initial volumes and volume change amounts of the multiple working cavities are all the same. The valve stem 32 is connected to the driving device 4, and the valve stem 32 can move within the valve sleeve 31 under the drive of the driving device 4, so that the oil storage volumes, that is, the working volumes, of the multiple working cavities change, enabling the multiple oil outlets to simultaneously achieve oil outlet and oil inlet, and the flow rates are the same. The oil flows into the adjustment oil cylinder 5, driving the piston rod to extend, thereby pushing the front crushing roller device towards the rear crushing roller device and changing the gap between the two.

[0043] It can be seen that by using the gap adjustment system of this crushing device, the gap between the two crushing roller devices can be adjusted. The operation is simple, convenient, time-saving and labor-saving, improving the user experience. Moreover, instead of directly driving with an ultra-large and complex motor, the mechanical energy of a small driving device 4, such as a motor, is converted into larger hydraulic energy as the driving source, which can provide a large driving force, and thus can drive the crushing roller device, reducing the equipment cost, and the system occupies a small space and is more flexible in layout.

[0044] In this embodiment, preferably, as Figure 1 shown, the gap adjustment system of the crushing device further includes a spring pre-tightening and resetting mechanism 8, and the number of the pre-tightening and resetting mechanisms is equal to and corresponds one-to-one with the number of the adjustment oil cylinders 5;

[0045] The first crushing roller device 6 is installed at the first target through multiple spring pre-tightening and resetting mechanisms 8, and the piston rod of the adjustment oil cylinder 5 can extend and push the first crushing roller device 6 to move away from the second crushing roller device 7 against the pre-tightening force of the pre-tightening spring 85 of the spring pre-tightening and resetting mechanism 8. And when the piston rod of the adjustment oil cylinder 5 contracts, the first crushing roller device 6 is reset under the action of the restoring force of the pre-tightening spring 85 of the spring pre-tightening and resetting mechanism 8.

[0046] According to the structure described above, this application is provided with a spring pre-tightening and resetting mechanism 8, making the first crushing roller device 6, such as the front crushing roller device, move more smoothly during the movement, and can achieve its automatic reset, and has a certain buffering effect during the adjustment process.

[0047] In this embodiment, preferably, as Figure 2As shown, the spring pre-tightening and reset mechanism 8 includes a fixed member 81, a slide rail 82, a mounting seat 83, a support rod 84, a pre-tightening spring 85, and a shielding member 86. Among them, both the fixed member 81 and the slide rail 82 are fixed to the first target location. The first crushing roller device 6 is connected to the mounting seat 83.

[0048] One end of the support rod 84 is fixedly connected to the mounting seat 83, and the other end of the support rod 84 is movably inserted through a first mounting through-hole formed in the fixed member 81. The pre-tightening spring 85 is sleeved outside the support rod 84 and is compressed between the fixed member 81 and a limiting convex portion 841 formed on the outer periphery of the support rod 84.

[0049] The shielding member 86 is fixed to the slide rail 82 and is located between the fixed member 81 and the mounting seat 83. The shielding member 86 is formed with a second mounting through-hole, and the support rod 84 is movably inserted through the second mounting through-hole. It can be seen that in addition to limiting the pre-tightening spring 85, the shielding member 86 can also block straws, weeds, etc., playing a role in protecting other components at the rear.

[0050] According to the structure described above, when the driving device 4 rotates clockwise, the valve stem 32 of the regulating valve 3 moves leftward as a whole and screws into the valve sleeve 31 of the regulating valve 3. The working volumes of all the accommodating cavities 311 are simultaneously reduced, and the hydraulic oil flows out from the respective oil outlets of the multiple accommodating cavities 311 respectively. The hydraulic energy is converted into mechanical energy, the adjusting cylinder 5 extends the piston rod, pushing the mounting seat 83 to move. While the mounting seat 83 pushes the support rod 84 to move, the limiting convex portion 841 on the support rod 84 compresses the pre-tightening spring 85, and the first crushing roller device 6, such as the front crushing roller device, moves as a whole in a direction away from the second crushing roller device 7, such as the rear crushing roller device. And the rear crushing roller device is fixed on the frame, thus increasing the gap between the front crushing roller device and the rear crushing roller device.

[0051] When the driving device 4 rotates counterclockwise, the valve stem 32 of the regulating valve 3 moves rightward as a whole and screws out of the valve sleeve 31 of the regulating valve 3. The working volumes of all the accommodating cavities 311 are simultaneously increased, and the hydraulic oil flows back into their respective accommodating cavities 311 from the respective oil outlets of the multiple accommodating cavities 311 respectively. The piston rod of the adjusting cylinder 5 contracts. Under the action of the restoring force of the pre-tightening spring 85, it pushes the support rod 84 to reset, and then pushes the mounting seat 83 to reset, so that the front crushing roller device moves in a direction close to the rear crushing roller device, that is, the front crushing roller device is reset to facilitate re-adjustment according to actual needs next time.

[0052] The above operations are simple and convenient, and make the first crushing roller device 6, such as the front crushing roller device, move more smoothly during the movement, and can realize its automatic reset, and have a certain buffering effect during the adjustment process.

[0053] Further, preferably, the mounting seat 83 is formed with a plug-in hole, one end of the support rod 84 is plugged into the plug-in hole, and preferably, the lubrication sleeve 87 described below may also be provided in the plug-in hole, and preferably, the support rod 84, the lubrication sleeve 87 and the mounting seat 83 may also be fixed together by a pin.

[0054] Further, preferably, the number of support rods 84, preload springs 85 and lubrication sleeves 87 can be multiple and used in combination, and multiple support rods 84 are arranged side by side. Of course, it is not limited to this, and there can also be one support rod and so on.

[0055] Further, preferably, a sliding block 88 is provided on the mounting seat 83 , and the sliding block 88 is slidably connected to the slide rail 82 .

[0056] In this embodiment, preferably, the spring preload reset mechanism 8 further includes a support frame (not shown in the figure), the fixing member 81 and the slide rail 82 are both fixed to the support frame, and the support frame is fixed to the first target location.

[0057] According to the structure described above, the fixing member 81, the slide rail 82 and the aforementioned shielding member 86 are all integrated on the support frame, and then the support frame is fixed at the first target location, which has high integration, small space occupation and is easy to maintain.

[0058] Further, preferably, the fixing member 81, the slide rail 82 and the support frame can be detachably connected by bolts.

[0059] Further, preferably, the shielding member 86 and the slide rail 82 can be detachably connected by bolts.

[0060] In this embodiment, preferably, Figure 2 As shown, the spring preload reset mechanism 8 further includes a lubricating sleeve 87 , and the lubricating sleeve 87 is disposed in the first mounting through hole of the fixing member 81 and is slidably connected to the support rod 84 .

[0061] According to the structure described above, the lubricating sleeve 87 plays a role of lubrication, thereby preventing the support rod 84 from getting stuck during its movement.

[0062] In this embodiment, preferably, Figure 1 As shown, the volume change of any accommodating cavity 311 is the same.

[0063] According to the structure described above, it can be known that the volume change of any accommodating chamber 311 is ensured to be the same, so that the oil flowing out of or into each accommodating chamber 311 can be the same, that is, the oil entering or flowing out of the regulating cylinder is the same, so that the piston rod of the regulating cylinder extends or contracts in the same way, thereby ensuring the stability of the first crushing roller device 6 during the movement.

[0064] In this embodiment, preferably, as Figure 1 shown, the valve stem 32 includes a connected working rod portion 321 and a connecting rod portion 322; wherein, a part of the structure of the working rod portion 321 is sequentially arranged in the accommodating cavity 311, and another part of the structure of the working rod portion 321 and the connecting rod portion 322 are both arranged outside the valve sleeve 31.

[0065] According to the structure described above, the working rod portion 321 is used to control the discharge or return of the hydraulic oil in each accommodating cavity 311, and the connecting rod portion 322 is used to connect the driving device 4.

[0066] Furthermore, preferably, the working rod portion 321 and the connecting rod portion 322 can be an integral structure. Of course, it is not limited to this, and they can also be a split structure and assembled together by welding or gluing, etc.

[0067] In this embodiment, preferably, as Figure 1 shown, along the direction of the valve sleeve 31 towards the driving device 4, the working rod portion 321 includes multiple rod portions, and the number of the multiple rod portions is equal to the number of the multiple accommodating cavities 311. The radius of the nth rod portion is n is an integer greater than or equal to 1, and r is a preset radius value. That is to say, along the direction of the valve sleeve 31 towards the driving device 4, the radius of the first rod portion 3211 is r, and the radius of the second rod portion 3212 is The radius of the third rod portion is …… The radius of the third rod portion is

[0068] According to the structure described above, in actual work, let the first rod portion 3211 extend into the first accommodating cavity 3111, the second rod portion 3212 extend into the second accommodating cavity 3112, the third rod portion extend into the second accommodating cavity 3112. According to this rule, the nth rod portion is extended into the nth accommodating cavity 311, and the oil outlet is closed, the oil inlet is opened, so that all the accommodating cavities 311 are filled with hydraulic oil. Then the oil outlet is opened. At this time, the driving device 4 can be used to drive the valve stem 32 to move towards the valve sleeve 31 side, so that an equal amount of hydraulic oil is discharged from each accommodating cavity 311, and further the amount of hydraulic oil entering each adjusting oil cylinder 5 is equal, ensuring that the extension amounts of the piston rods of each adjusting oil cylinder 5 are equal, thus ensuring the balance and stability during the movement of the first crushing roller device 6. Similarly, when the driving device 4 drives the valve stem 32 to move away from the valve sleeve 31, the same amount of hydraulic oil is discharged from each adjusting oil cylinder 5, and this hydraulic oil enters the corresponding accommodating cavity 311, and the contraction amounts of the piston rods of the adjusting oil cylinders 5 are equal.

[0069] In this embodiment, preferably, as Figure 1 shown, the size of each accommodating cavity 311 is the same.

[0070] In this embodiment, preferably, as Figure 1 shown, the driving device 4 is a motor. According to the structure described above, the motor can drive the valve stem 32 to move, with mature technology and a long service life.

[0071] Furthermore, preferably, the motor can also be connected to the valve stem 32 through a speed reducer.

[0072] Furthermore, preferably, this motor is a stepper motor, which can achieve multi-gear adjustment. For example: five gears can be set. The initial gap between the two crushing roller devices, that is, the initial gap for grain crushing, is 1 mm, which is in the first gear position. When the initial gap for grain crushing is 5 mm, it is in the fifth gear position.

[0073] In this embodiment, preferably, as Figure 1 shown, the number of the adjusting cylinders 5 is two, and they are respectively arranged on both sides of the first crushing roller device 6; the number of the accommodating cavities 311 and the oil outlets is also two, and they correspond to the two adjusting cylinders 5 one by one. For the convenience of distinction, the two accommodating cavities 311 are respectively named the first accommodating cavity 311 and the second accommodating cavity 311, and the two oil outlets are respectively named the first oil inlet and the second oil inlet.

[0074] According to the structure described above, one adjusting cylinder 5 is arranged on both sides of the first crushing roller device 6 to ensure the stability of the first crushing roller device 6 during the moving process.

[0075] Furthermore, preferably, along the extending direction of the valve stem 32, the length of the first accommodating cavity 311 is less than that of the second accommodating cavity 311, and the cross-sectional dimensions of the first accommodating cavity 311 and the second accommodating cavity 311 along the direction perpendicular to the extending direction of the valve stem 32 are the same.

[0076] It should be noted that: the number of the adjusting cylinders 5, the number of the accommodating cavities 311, and the number of the oil outlets are not limited to two, and can also be more than two, such as three, four, or five, etc. However, it is necessary to ensure that the multiple adjusting cylinders 5, the multiple accommodating cavities 311, and the multiple oil outlets correspond to each other one by one.

[0077] In this embodiment, preferably, as Figure 1 shown, the adjusting valve 3 further includes a guide sleeve 33. The guide sleeve 33 is fixed to a third target, such as the body of the silage machine, and the valve stem 32 is movably inserted into the guide sleeve 33.

[0078] According to the structure described above, the guide sleeve 33 plays a role in guiding the valve stem 32 during the moving process, improving the adjustment accuracy.

[0079] Further, preferably, one end of the valve rod 32 passes through the guide sleeve 33 and is connected to the driving end of the driving device 4 through a bushing.

[0080] In summary, the detailed working process of the clearance adjustment system of this crushing device is as follows:

[0081] In the first step, the pre-tightening force of the pre-tightening spring 85 is preset. In the natural state, the clearance between the first crushing roller device 6 and the second crushing roller device 7 is the smallest.

[0082] In the second step, confirm that the adjusting valve 3 is in the initial state. At this time, the volumes of the first cavity and the second cavity, that is, the two working cavities, are the largest, the length of the left end of the valve rod 32 screwed out of the valve sleeve 31 is the largest, and at the same time confirm that the piston rod of the adjusting oil cylinder 5 is in the initial state, that is, the piston rod does not extend.

[0083] In the third step, the make-up oil pump 2 sucks oil from the hydraulic oil tank 1 to fill the hydraulic system with liquid. The hydraulic oil from the hydraulic oil tank 1 enters the first accommodating cavity 311 and the second accommodating cavity 311 respectively through the oil inlet P of the adjusting valve 3 until the two working cavities are filled with oil and the air in the hydraulic system is completely discharged. At this time, the oil inlet P of the adjusting valve 3 is closed, and then the first oil outlet A and the second oil outlet B of the adjusting valve 3 are closed; at this time, the pressure inside the two working cavities is the smallest, the hydraulic oil will not flow out from the first oil outlet A and the second oil outlet B, and the adjusting oil cylinder 5 will not extend the piston under the action of the hydraulic pressure.

[0084] In the fourth step, the driving device 4, such as a motor, is controlled to rotate clockwise through an electric control strategy. The whole valve rod 32 moves to the left and is screwed into the valve sleeve 31. The oil storage volumes of the first cavity and the second cavity, that is, the working volumes, are reduced simultaneously. The hydraulic oil flows out respectively from the first oil outlet A and the second oil outlet B under the drive of the hydraulic pressure. The hydraulic energy is converted into mechanical energy. The adjusting oil cylinder 5 overcomes the action of the pre-tightening force of the pre-tightening spring 85 and extends the piston rod, increasing the clearance between the first crushing roller device 6 and the second rear crushing roller device; the driving device 4 is controlled to rotate counterclockwise through an electric control strategy. The whole valve rod 32 moves to the right and is screwed out of the valve sleeve 31. The working volumes of the first cavity and the second cavity increase simultaneously. Under the action of the pre-tightening force of the pre-tightening spring 85, the adjusting oil cylinder 5 retracts the piston rod, and the hydraulic oil flows into the first cavity and the second cavity respectively from the first oil outlet and the second oil outlet, and the mechanical energy is converted into pressure energy and stored. The clearance between the first crushing roller device 6 and the second crushing roller device 7 is reduced; with different control gears of the driving device 4, the clearance between the first crushing roller device 6 and the second crushing roller device 7 is different. For example, five gears can be set. The initial clearance for grain crushing is 1 mm at the first gear position, and the initial clearance for grain crushing is 5 mm at the fifth gear position.

[0085] It should be noted that: The gap adjustment system of this crushing device can be applied to a forage harvester, but is not limited to being applied to a forage harvester, and can also be applied to other equipment.

[0086] Embodiment 2

[0087] Embodiment 2 of this application also provides a forage harvester, including the gap adjustment system of the crushing device described in Embodiment 1 above. Therefore, it has all the beneficial technical effects of this gap adjustment system of the crushing device, and the same technical features and beneficial effects will not be repeated.

[0088] Finally, it should be noted that: The above embodiments are only used to illustrate the technical solutions of this application, rather than to limit them; although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: They can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A clearance adjustment system for a crushing device, characterized in that, Comprising: A hydraulic oil tank, a make-up oil pump, an adjustment valve, a driving device, a plurality of adjustment cylinders, a first crushing roller device, and a second crushing roller device; wherein, the adjustment valve includes a valve sleeve and a valve rod, a plurality of accommodating cavities are formed in the valve sleeve at intervals in sequence, the valve rod is installed in the valve sleeve, and the driving device can drive the valve rod to move in a plurality of the accommodating cavities simultaneously; The valve sleeve is formed with an oil inlet and a plurality of oil outlets, the oil inlet is respectively communicated with a plurality of the accommodating cavities, and the plurality of oil outlets correspond to and are respectively communicated with the plurality of accommodating cavities one by one; the oil tank, the make-up oil pump, and the oil inlet of the adjustment valve are communicated via pipelines; The oil inlets of the plurality of adjustment cylinders correspond to and are communicated with the plurality of oil outlets of the valve sleeve via pipelines; the first crushing roller device is movably installed at a first target location, the second crushing roller device is installed at a second target location, and the piston rod of the adjustment cylinder is used to drive the first crushing roller device to move towards the second crushing roller device to change the gap therebetween.

2. The gap adjustment system of the crushing device according to claim 1, characterized in that The crushing device gap adjustment system further includes a spring pre-tightening and resetting mechanism, and the number of the pre-tightening and resetting mechanisms is equal to and corresponds to the number of the adjustment cylinders one by one; The first crushing roller device is installed at the first target location through a plurality of the spring pre-tightening and resetting mechanisms, and the piston rod of the adjustment cylinder can extend and push the first crushing roller device to move in a direction away from the second crushing roller device against the pre-tightening force of the pre-tightening spring of the spring pre-tightening and resetting mechanism, and when the piston rod of the adjustment cylinder contracts, the first crushing roller device is reset under the action of the restoring force of the pre-tightening spring of the spring pre-tightening and resetting mechanism.

3. The gap adjustment system of the crushing device according to claim 2, characterized in that, The spring pre-tightening and resetting mechanism includes a fixing member, a slide rail, a mounting seat, a support rod, the pre-tightening spring, and a shielding member; wherein, the fixing member and the slide rail are both fixed to the first target location; the first crushing roller device is connected to the mounting seat; One end of the support rod is fixedly connected to the mounting seat, and the other end of the support rod movably passes through a first mounting through hole formed by the fixing member; the pre-tightening spring is sleeved outside the support rod and is compressed between a limiting convex portion formed by the fixing member and the outer periphery of the support rod; The shielding member is fixed to the slide rail and is located between the fixing member and the mounting seat; the shielding member is formed with a second mounting through hole, and the support rod movably passes through the second mounting through hole.

4. The gap adjustment system of the crushing device according to claim 3, wherein The spring pre-tightening and resetting mechanism further includes a support frame, the fixing member and the slide rail are both fixed to the support frame, and the support frame is fixed to the first target location.

5. The clearance adjustment system of the crushing device according to claim 3, characterized in that The spring pre-tightening and resetting mechanism further includes a lubricating sleeve, and the lubricating sleeve is arranged in the first mounting through hole of the fixing member and is slidably connected to the support rod.

6. The gap adjustment system of the crushing device according to claim 1, wherein The volume change amount of any one of the accommodating cavities is the same.

7. The gap adjustment system of the crushing device according to claim 6, characterized in that, The valve stem includes a working rod portion and a connecting rod portion that are connected; wherein, a part of the structure of the working rod portion is sequentially disposed in the accommodation cavity, and another part of the structure of the working rod portion and the connecting rod portion are both disposed outside the valve sleeve.

8. The clearance adjustment system of the crushing device according to claim 7, characterized in that, Along the direction of the valve sleeve towards the driving device, the working rod portion includes multiple rod portions, and the number of the multiple rod portions is equal to the number of the multiple accommodating cavities. The radius of the nth rod portion is where n is an integer greater than or equal to 1, and r is a preset radius value.

9. The clearance adjustment system of the crushing device according to any one of claims 1 to 8, characterized in that, The number of the adjusting oil cylinders is two, and they are respectively disposed on both sides of the first crushing roller device; the number of the accommodation cavities and the oil outlet is also two, and they correspond to the two adjusting oil cylinders one by one; and / or The size of each of the accommodation cavities is the same; and / or The driving device is a stepping motor.

10. A silage harvester, characterized in that, It includes a crushing device gap adjustment system according to any one of claims 1 to 9.

Images