Automatic opening and closing device for silo cover plate

Abstract

The application discloses a kind of automatic opening and closing device of bunker cover, including the transport mechanism for transporting bunker, opening and closing driving assembly connected to the transport mechanism, rotatably arranged on the rotating shaft of the bunker, first driving part connected to the rotating shaft, the rotating shaft is connected with the cover of the bunker, the opening and closing driving assembly is used to form abutment to the first driving part during the transport process of the bunker, to force the first driving part to produce rotation movement at least 90 ° along the opening and closing rotation direction. Thus, the application cooperates the first driving part with the opening and closing driving assembly, the second driving part with the closing driving assembly, without manual opening and closing operation. Not only can the automatic opening and closing operation of the bunker cover be conveniently realized during the transport process of the bunker, but also the automatic closing operation of the bunker cover can be conveniently realized during the continued transport process after the bunker is finished, thereby reducing labor cost and improving work efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of material transportation, in particular to an automatic opening and closing device for a cover plate of a material bin. BACKGROUND

[0002] In the production workshop of chemical industry, food, medicine, new energy and other industries, it is often necessary to store and transport various powders.

[0003] At present, the storage of powders is usually completed by using a material bin or other container. Since the material bin needs to be placed in a heat preservation furnace after batching, an electrical control unit is usually not configured on the material bin to avoid being damaged by heat, so that the cover plate and other moving mechanisms provided on the material bin need to be opened and closed or moved by external force.

[0004] In the prior art, the cover plate of the material bin needs to be manually opened by using a pull rod or a lever before entering the batching station, however, the cover plate is heavy, manual opening is time-consuming and laborious, the work efficiency is low, the degree of automation is low, and when the height of the material bin is high, the operation difficulty of manual opening is greater.

[0005] Therefore, how to conveniently realize the automatic opening operation of the cover plate of the material bin and reduce the labor cost is a technical problem faced by those skilled in the art. SUMMARY

[0006] The purpose of the present application is to provide an automatic opening and closing device for a cover plate of a material bin, which can conveniently realize the automatic opening operation of the cover plate of the material bin, reduce the labor cost and improve the work efficiency.

[0007] To solve the above technical problems, the present application provides an automatic opening and closing device for a cover plate of a material bin, which comprises a transportation mechanism for transporting the material bin, an opening drive assembly connected to the transportation mechanism, a rotating shaft rotatably provided on the material bin, and a first drive portion connected to the rotating shaft, the rotating shaft being connected to the cover plate of the material bin, the opening drive assembly being used to abut against the first drive portion during the transportation of the material bin to force the first drive portion to produce a rotating movement of at least 90° in the opening rotation direction.

[0008] Preferably, the device further comprises a closing drive assembly connected to the transportation mechanism and a second drive portion connected to the rotating shaft, the closing drive assembly being used to abut against the second drive portion during the transportation of the material bin to force the second drive portion to produce a rotating movement of at least 90° in the closing rotation direction.

[0009] Preferably, the first driving part comprises a first driving plate connected to the side wall of the rotating shaft and extending radially along the side wall, and a first guide wheel arranged at the end of the first driving plate, the first guide wheel being used to abut against the cover opening driving assembly.

[0010] Preferably, the first guide wheel is a roller rotatably arranged at the end of the first driving plate, so as to roll against the cover opening driving assembly.

[0011] Preferably, the second driving part comprises a second driving plate connected to the side wall of the rotating shaft and extending radially along the side wall, and a second guide wheel arranged at the end of the second driving plate, the second guide wheel being used to abut against the cover closing driving assembly.

[0012] Preferably, the second guide wheel is a roller rotatably arranged at the end of the second driving plate, so as to roll against the cover closing driving assembly.

[0013] Preferably, the first driving part and the second driving part have a preset included angle on the rotating shaft and are symmetrically distributed.

[0014] Preferably, when the cover plate is turned to a fully open state, the first driving part and the second driving part form a combined weight moment of zero on the rotating shaft; when the cover plate is turned to a fully closed state, the first driving part and the second driving part form a combined weight moment of zero on the rotating shaft.

[0015] Preferably, the cover opening driving assembly comprises a cover opening driving vertical rod erected on the conveying mechanism, and a cover opening abutting head arranged on the cover opening driving vertical rod, the cover opening abutting head being provided with a cover opening abutting surface on the side wall facing the first driving part, the cover opening abutting surface being used to abut against the first driving part and form a preset movement track.

[0016] Preferably, the cover opening abutting surface comprises a first vertical surface and a first inclined surface which are sequentially used to abut against the first driving part, the first vertical surface being used to generate a horizontal abutting force on the first driving part, and the first inclined surface being used to generate an inclined downward abutting force on the first driving part.

[0017] Preferably, the cover closing driving assembly comprises a cover closing driving vertical rod erected on the conveying mechanism, and a cover closing abutting head arranged on the cover closing driving vertical rod, the cover closing abutting head being provided with a cover closing abutting surface on the side wall facing the second driving part, the cover closing abutting surface being used to abut against the second driving part and form a preset movement track.

[0018] Preferably, the cover abutting surface comprises a second vertical surface and a second inclined surface which are sequentially formed in abutment with the second driving part, the second vertical surface is used to generate a horizontal abutting force on the second driving part, and the second inclined surface is used to generate an inclined upward abutting force on the second driving part.

[0019] The automatic cover opening and closing device for the bunker cover plate provided by the application mainly comprises a rotating shaft, a first driving part, a transportation mechanism and a cover opening driving assembly. The rotating shaft is arranged on the bunker, usually on the top surface of the bunker, and is rotatably connected with the bunker, has a rotating movement degree of freedom, and can smoothly perform a rotating movement. Meanwhile, the rotating shaft is also connected with the cover plate arranged at the charging port of the bunker, so as to drive the cover plate to synchronously rotate in the rotating process. The first driving part is connected with the rotating shaft, and is mainly used to cooperate with the cover opening driving assembly to generate a rotating movement, so as to drive the rotating shaft to synchronously rotate and further drive the cover plate to synchronously rotate. The transportation mechanism is usually installed in an environment such as a factory building, and is mainly used to transport the bunker. In the transportation process, the bunker is placed on the transportation mechanism, and gradually moves along a predetermined route with the running of the transportation mechanism until it is paused at a batching station. The cover opening driving assembly is connected with the transportation mechanism, and is specifically located at a preset position in front of the batching station. During the transportation process of the bunker, the cover opening driving assembly collides with the first driving part connected with the rotating shaft on the bunker. Since the transportation mechanism still continuously maintains the transportation state after the collision, the cover opening driving assembly continuously and tightly abuts against the first driving part for a certain period of time under the continuous movement of the bunker. Since the rotating shaft connected with the first driving part is freely rotatable, the first driving part is forced to generate a rotating movement during the continuous abutting action of the cover opening driving assembly. The rotating direction of the rotating movement is specifically the opening rotating direction of the cover plate. The abutting action disappears after the rotating movement of at least 90° of the central angle.

[0020] Therefore, the automatic cover opening and closing device for the bunker cover plate provided by the application realizes the transportation of the bunker through the transportation mechanism, and gradually transports the bunker to the batching station. Before the batching station, the first driving part arranged on the bunker collides with and continuously abuts against the cover opening driving assembly arranged on the transportation mechanism in the transportation process of the bunker. The abutting action forces the first driving part to drive the rotating shaft and the cover plate to perform a directional rotating movement, and at least can drive the cover plate to overturn more than 90° in the opening direction, so as to open the cover plate from the completely closed state to more than 90°, and further open the cover plate to the completely open state under the action of the inertia, the gravity moment and / or the still existing abutting action of the cover plate, and completes the automatic cover opening operation.

[0021] Compared with the prior art, the automatic opening and closing device for the bin cover plate provided by the application can automatically open the bin cover plate during the transportation of the bin, and thus the labor cost is reduced and the work efficiency is improved.

[0022] In a preferred embodiment provided by the application, the automatic opening and closing device for the bin cover plate can not only automatically open the bin cover plate during the transportation of the bin, but also automatically close the bin cover plate during the continuous transportation of the bin after the bin is filled, and thus the labor cost is further reduced and the work efficiency is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only the embodiments of the application, and for those skilled in the art, other drawings can be obtained based on the provided drawings without creative labor.

[0024] Figure 1 A partial structural schematic view of a specific embodiment provided by the application.

[0025] Figure 2 Another partial structural schematic view of a specific embodiment provided by the application.

[0026] Figure 3 A specific structural schematic view of the first driving part and the second driving part.

[0027] Figure 4 A structural schematic view of the first driving part just starting to abut against the opening driving assembly.

[0028] Figure 5 A structural schematic view of the first driving part abutting against the first vertical surface.

[0029] Figure 6 A structural schematic view of the first driving part abutting against the boundary between the first vertical surface and the first inclined surface.

[0030] Figure 7 A structural schematic view of the first driving part abutting against the first inclined surface.

[0031] Figure 8 A structural schematic view of the cover plate being turned to a completely open state.

[0032] Figure 9 A structural schematic view of the second driving part just starting to abut against the closing driving assembly.

[0033] Figure 10 Structure diagram for the second driving part abutting on the second vertical surface.

[0034] Figure 11 Structure diagram for the second driving part abutting on the boundary between the second vertical surface and the second inclined surface.

[0035] Figure 12 Structure diagram for the second driving part abutting on the second inclined surface.

[0036] Figure 13 Structure diagram for the cover plate being flipped to the fully closed state.

[0037] Wherein, Figure 1 — Figure 13 In:

[0038] Hopper - 1, cover plate - 2, rotating shaft - 3, first driving part - 4, conveying mechanism - 5, cover opening driving assembly - 6, cover closing driving assembly - 7, second driving part - 8;

[0039] First driving plate - 41, first guide wheel - 42;

[0040] Second driving plate - 81, second guide wheel - 82;

[0041] Cover opening driving vertical rod - 61, cover opening abutting head - 62, cover opening abutting surface - 63;

[0042] Cover closing driving vertical rod - 71, cover closing abutting head - 72, cover closing abutting surface - 73;

[0043] First vertical surface - 631, first inclined surface - 632;

[0044] Second vertical surface - 731, second inclined surface - 732. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0046] Please refer to Figure 1 、 Figure 2 , Figure 1 is a partial structure diagram of a specific embodiment provided by the present application, Figure 2 is another partial structure diagram of a specific embodiment provided by the present application.

[0047] In a specific embodiment provided by the present application, the automatic opening and closing device of the bin cover mainly comprises a rotating shaft 3, a first driving part 4, a conveying mechanism 5 and a cover opening driving assembly 6.

[0048] The rotating shaft 3 is arranged on the bin 1, usually on the top surface of the bin 1, and is rotatably connected with the bin 1, has a rotational freedom, and can smoothly rotate. At the same time, the rotating shaft 3 is also connected with the cover plate 2 arranged at the feeding opening of the bin 1, so as to drive the cover plate 2 to rotate synchronously during rotation.

[0049] The first driving part 4 is connected with the rotating shaft 3, and is mainly used for cooperating with the cover opening driving assembly 6 to generate a rotational movement, so as to drive the rotating shaft 3 to rotate synchronously, and then drive the cover plate 2 to rotate synchronously.

[0050] The conveying mechanism 5 is usually installed in a factory building or the like, and is mainly used for conveying the bin 1. During conveying, the bin 1 is placed on the conveying mechanism 5, and gradually moves along a predetermined route with the running of the conveying mechanism 5, until it stops at a batching station.

[0051] The cover opening driving assembly 6 is connected with the conveying mechanism 5, and is specifically located at a predetermined position in front of the batching station. During conveying of the bin 1, the cover opening driving assembly 6 will collide with the first driving part 4 connected with the rotating shaft 3 on the bin 1. Since the conveying mechanism 5 still maintains the conveying state after the collision, the cover opening driving assembly 6 will form a close abutment with the first driving part 4 for a certain period of time under the continuous movement of the bin 1. Since the rotating shaft 3 connected with the first driving part 4 can rotate freely, the first driving part 4 will be forced to rotate during the continuous abutment of the abutment force from the cover opening driving assembly 6. The rotational direction of the rotation is the opening direction of the cover plate 2, and the abutment force disappears after the rotation of at least 90° of the central angle.

[0052] In this way, the automatic opening and closing device of the bin cover provided by the present embodiment realizes the conveying of the bin 1 through the conveying mechanism 5, and gradually transports the bin 1 to the batching station. Before the batching station, the first driving part 4 arranged on the bin 1 will collide with and continuously abut against the cover opening driving assembly 6 arranged on the conveying mechanism 5 during conveying of the bin 1. The abutment force forces the first driving part 4 to drive the rotating shaft 3 and the cover plate 2 to rotate in a certain direction, and can drive the cover plate 2 to rotate more than 90° in the opening direction, so as to open the cover plate 2 from the completely closed state (i.e. the horizontal closed state of being attached to the surface of the feeding opening) to more than 90°, and then continue to open to the completely open state (i.e. the horizontal open state of being attached to the top surface of the bin 1 after rotating 180° from the completely closed state) under the action of the moment of inertia of the cover plate 2 itself and / or the abutment force still existing, to complete the automatic opening operation.

[0053] Compared with the prior art, the automatic opening and closing device for the bin cover provided by the embodiment can automatically open the bin cover during the transportation of the bin 1, without manual opening operation, thereby reducing labor cost and improving work efficiency.

[0054] In another specific embodiment provided by the application, considering that the automatic opening operation of the cover 2 is completed, the transportation mechanism 5 continues to transport the bin 1 to the batching station to store materials in the bin 1. After the batching operation is completed, the transportation mechanism 5 continues to transport the bin 1 to the holding furnace station. In this process, in order to ensure the cleanliness of the materials stored in the bin 1, the opened cover 2 needs to be closed again. In the prior art, the closing operation of the cover 2 is the same as the opening operation, that is, the cover 2 is closed by manually using a pull rod, a push rod or other tools, which also has the problems of time-consuming and labor-consuming, low work efficiency and high operation difficulty. In view of this, in the embodiment, the automatic opening and closing device for the bin cover further comprises a closing driving assembly 7 and a second driving part 8 in addition to the rotating shaft 3, the first driving part 4, the transportation mechanism 5 and the opening driving assembly 6.

[0055] The second driving part 8 is also connected to the rotating shaft 3 and is mainly used to cooperate with the closing driving assembly 7 to generate a rotating motion, so as to drive the rotating shaft 3 to rotate synchronously and drive the cover 2 to rotate synchronously, like the first driving part 4.

[0056] Like the opening driving assembly 6, the closing driving assembly 7 is also connected to the transportation mechanism 5, but is specifically located at a preset position between the rear of the batching station and the front of the holding furnace station, and during the transportation of the bin 1, the closing driving assembly 7 will collide with the second driving part 8 connected to the rotating shaft 3 on the bin 1. Since the transportation mechanism 5 still maintains the transportation state after the collision, the closing driving assembly 7 will form a close abutment with the second driving part 8 for a certain period of time under the continuous movement of the bin 1. Since the rotating shaft 3 connected to the second driving part 8 can rotate freely, the second driving part 8 will be forced to generate a rotating motion during the process of being continuously abutted by the closing driving assembly 7. The rotating direction of the rotating motion is the closing rotation direction of the cover 2, and the abutment force disappears after the rotating motion rotates at least 90° of the central angle.

[0057] Thus, the transportation of the material bin 1 is realized by the transportation mechanism 5, and the material bin 1 is gradually transported from the batching station to the holding furnace station. During the transportation process, the second driving part 8 provided on the material bin 1 will collide with and continuously abut against the cover closing driving assembly 7 provided on the transportation mechanism 5. The abutment force is used to force the second driving part 8 to drive the rotating shaft 3 and the cover plate 2 to perform directional rotary motion, and at least the cover plate 2 is driven to rotate more than 90° in the cover closing direction, so as to open the cover plate 2 from the fully open state to more than 90°, and then the cover plate 2 is continuously opened to the fully closed state under the action of inertia, its own gravity moment and / or the abutment force still existing, and the automatic cover closing operation is completed.

[0058] Compared with the prior art, the automatic cover opening and closing device for the material bin provided by the embodiment can realize the automatic cover opening operation of the material bin conveniently during the transportation process of the material bin 1, and can realize the automatic cover closing operation of the material bin conveniently during the continuous transportation process after the batching of the material bin 1 is completed, so as to further reduce the labor cost and further improve the operation efficiency.

[0059] As shown in Figure 3 , the first driving part 4 and the second driving part 8 are specific structural schematic diagrams. Figure 3

[0060] In an optional embodiment of the first driving part 4, the first driving part 4 mainly includes a first driving plate 41 and a first guide wheel 42. The first driving plate 41 is connected to the side wall of the rotating shaft 3, generally connected to the axial end of the rotating shaft 3, and specifically can extend outward by a preset length along the radial direction of the rotating shaft 3, or can be arranged away from the radial direction of the rotating shaft 3. The first guide wheel 42 is arranged at the end position of the first driving plate 41, which is a wheel structure, and is mainly used for the abutment between the outer circular surface and the cover opening driving assembly 6, so that the abutment force continuously acts on the first guide wheel 42, drives the first driving plate 41 to rotate around the rotating shaft 3, and during the rotation of the first driving plate 41, the abutment between the first guide wheel 42 and the cover opening driving assembly 6 is always maintained under the continuous transportation of the transportation mechanism 5, until the first driving plate 41 rotates more than 90°.

[0061] ​Furthermore, considering that during the continuous contact between the first guide wheel 42 and the cover-opening drive assembly 6, the actual movement of the first guide wheel 42 is a composite motion of rotation and linear motion, the contact position with the cover-opening drive assembly 6 gradually changes with the movement. That is, there is a relative displacement between the first guide wheel 42 and the cover-opening drive assembly 6, resulting in sliding friction between their surfaces. To address this, and to reduce frictional resistance and loss, in this embodiment, the first guide wheel 42 is specifically a rotatable roller, thus forming a rolling contact when it contacts the cover-opening drive assembly 6. As the transport mechanism 5 continues to transport, the outer surface of the first guide wheel 42 will form rolling friction with the cover-opening drive assembly 6. With this configuration, compared to sliding friction, rolling friction has lower frictional resistance and loss, and it can enhance the guiding effect of the first guide wheel 42 on the first drive plate 41.

[0062] Of course, the first drive unit 4 is not limited to the combination structure of the first drive plate 41 and the first guide wheel 42. Others, such as an extended rod integrally formed with the rotating shaft 3 and extending in the radial direction, can also achieve the same effect. The end of the extended rod can also be provided with a spherical structure.

[0063] like Figure 2 As shown, in one optional embodiment of the cover-opening drive assembly 6, the cover-opening drive assembly 6 mainly includes a cover-opening drive upright 61 and a cover-opening abutment 62. The cover-opening drive upright 61 is erected on the transport mechanism 5, specifically as a rod or column. To avoid affecting the transport operation of the transport mechanism 5, such as the conveyor belt area, the cover-opening drive upright 61 can be connected to the side wall of the transport mechanism 5 and extends vertically upward to a preset height position. The cover-opening abutment 62 is disposed on the cover-opening drive upright 61, generally located at the top of the cover-opening drive upright 61. However, the height position of the cover-opening abutment 62 on the cover-opening drive upright 61 can be adjusted as needed, specifically to be equivalent to the steady-state height position of the first drive unit 4 when the cover plate 2 is fully closed. Furthermore, a cover-opening abutment surface 63 is provided on the side wall of the cover-opening abutment 62 facing the first drive unit 4, or on the side wall facing the direction of the hopper 1 towards the cover-opening drive upright 61. The opening contact surface 63 is mainly used to collide and continuously contact the first driving part 4, so as to force the first driving part 4 to form a preset motion trajectory through the contact force. Generally, the motion trajectory of the first driving part 4 is a composite motion trajectory of circular motion and linear motion, that is, a specific curve.

[0064] Of course, the cover opening drive assembly 6 is not limited to the cover opening drive pole 61 and the cover opening abutment 62 mentioned above. Other examples, such as a hanging rod connected to the workshop roof and extending downward to a preset height position, and a ball head provided at the bottom of the hanging rod for abutting with the first drive unit 4, are also feasible.

[0065] In an alternative embodiment of the cover opening abutting surface 63, the cover opening abutting surface 63 mainly comprises a first vertical surface 631 and a first inclined surface 632. The first vertical surface 631 is connected to the first inclined surface 632, and the first vertical surface 631 is more forward and higher in position relative to the first inclined surface 632, i.e. closer to the approach direction of the hopper 1, so as to ensure that the first vertical surface 631 first collides and abuts against the first driving part 4, and then continues to abut against the first vertical surface 631 after the abutment between the first driving part 4 and the first vertical surface 631 ends. At the same time, the first vertical surface 631 remains in a vertical posture and faces the first driving part 4 that is gradually approaching, and the height positions of the two are equivalent, and the first vertical surface 631 is specifically used to abut against the first guide wheel 42 to generate a horizontal abutment force on the first guide wheel 42, and then generate a torque of a specific rotation direction on the rotating shaft 3 through the first driving plate 41. The first inclined surface 632 is in an inclined downward posture, and when the first guide wheel 42 transitions onto the first inclined surface 632, the first inclined surface 632 will generate an inclined downward abutment force on the first guide wheel 42, and continue to generate a torque of a specific rotation direction on the rotating shaft 3 through the first driving plate 41 by using the abutment force, such as the counterclockwise direction shown in the figure.

[0066] Of course, the cover opening abutting surface 63 can also adopt an arc surface, a spherical surface, etc.

[0067] Generally, when the first guide wheel 42 is in the process of abutting against the first inclined surface 632, the cover plate 2 has already been able to be flipped by 90°, so the extension length of the first inclined surface 632 can be up to the state that the cover plate 2 is flipped by 90°, and then the first guide wheel 42 can be separated from the abutment with the first inclined surface 632, and under the inertial action of the cover plate 2, the automatic continuous cover opening movement can be realized by using the gravity of the cover plate 2 itself. Of course, the first driving part 4 itself will also continue to rotate to a suspended stable state (flipped by 180°) under the inertial action and the gravity action. Of course, the extension length of the first inclined surface 632 can also be continued to be extended, so that the abutment force can be continued to the state that the cover plate 2 is flipped by more than 90°, such as 90-120°, etc., so that the cover opening efficiency is higher.

[0068] For example, Figure 3As shown, in an optional embodiment of the second driving part 8, the second driving part 8 mainly comprises a second driving plate 81 and a second guide wheel 82. The second driving plate 81 is connected to the side wall of the rotating shaft 3, generally at the end of the axial end of the rotating shaft 3, and can specifically extend outward by a predetermined length along the radial direction of the rotating shaft 3, or can be arranged offset from the radial direction of the rotating shaft 3. The second guide wheel 82 is arranged at the end of the second driving plate 81, specifically in a wheel structure, mainly for the outer circular surface to abut against the cover driving assembly 7, so that the abutting force continuously acts on the second guide wheel 82, drives the second driving plate 81 to rotate around the rotating shaft 3, and under the continuous transportation of the transportation mechanism 5, the abutment between the second guide wheel 82 and the cover driving assembly 7 is always maintained during the rotation of the second driving plate 81, until the second driving plate 81 rotates by 90° or more.

[0069] Of course, the second driving part 8 is not limited to the combination structure of the second driving plate 81 and the second guide wheel 82, and other structures such as an outward extending rod integrally formed with the rotating shaft 3 and extending in the radial direction can also achieve the same effect, and the end of the outward extending rod can also be provided with a spherical structure.

[0070] Further, considering that the actual movement of the second guide wheel 82 is a combination of rotational movement and linear movement during the continuous abutment between the second guide wheel 82 and the cover driving assembly 7, the abutment position between the second guide wheel 82 and the cover driving assembly 7 gradually changes with the movement, that is, there is relative displacement between the second guide wheel 82 and the cover driving assembly 7, and sliding friction will be formed between the surfaces of the two. In view of this, in order to reduce the friction resistance and friction loss, the second guide wheel 82 in the embodiment is a rotatable roller, so that when it abuts against the cover driving assembly 7, it specifically forms rolling abutment, and then with the continuous transportation of the transportation mechanism 5, the outer circular surface of the second guide wheel 82 will form rolling friction with the cover driving assembly 7. By such arrangement, compared with sliding friction, the friction resistance and loss of rolling friction are lower, and the guiding effect of the second guide wheel 82 on the second driving plate 81 can be strengthened.

[0071] As Figure 2As shown, in an optional embodiment regarding the cover closing driving assembly 7, the cover closing driving assembly 7 mainly comprises a cover closing driving vertical rod 71 and a cover closing abutting head 72. Among them, the cover closing driving vertical rod 71 is vertically arranged on the conveying mechanism 5, specifically a rod or column, in order to avoid affecting the conveying operation of the conveying mechanism 5, such as the conveying belt area, etc. The cover closing driving vertical rod 71 is specifically connected to the side wall of the conveying mechanism 5 and extends vertically upward to a predetermined height position. The cover closing abutting head 72 is arranged on the cover closing driving vertical rod 71, generally at the top end position of the cover closing driving vertical rod 71, of course, the height position of the cover closing abutting head 72 on the cover closing driving vertical rod 71 can be adjusted as needed, specifically needs to be equivalent to the steady height position of the second driving part 8 in the fully open state of the cover plate 2. And on the side wall of the cover closing abutting head 72 facing the second driving part 8, or in the direction of the silo 1 approaching the cover closing driving vertical rod 71, a cover closing abutting surface 73 is arranged. The cover closing abutting surface 73 is mainly used to form a collision and continuous abutment with the second driving part 8 to force the second driving part to form a predetermined motion trajectory through the abutting force. Generally, the motion trajectory of the second driving part 8 is a composite motion trajectory of circular motion and linear motion, that is, a specific curved type.

[0072] Of course, the cover closing driving assembly 7 is not limited to the above-mentioned cover closing driving vertical rod 71 and cover closing abutting head 72, and other structures such as a hanging rod connected to the workshop roof and extending downward to a predetermined height position, and a ball head arranged at the bottom end of the hanging rod for abutting with the second driving part 8 are also feasible.

[0073] In an optional embodiment regarding the cover closing abutting surface 73, the cover closing abutting surface 73 mainly comprises a second vertical surface 731 and a second inclined surface 732. Among them, the second vertical surface 731 is connected with the second inclined surface 732, and the second vertical surface 731 is more forward and lower in position relative to the second inclined surface 732, that is, closer to the approaching direction of the silo 1, to ensure that the second vertical surface 731 first collides and abuts with the second driving part 8, and immediately transitions to continue abutting with the second vertical surface 731 after the abutment between the second driving part 8 and the second vertical surface 731 ends. At the same time, the second vertical surface 731 maintains a vertical posture and directly faces the gradually approaching second driving part 8, and the height positions of the two are equivalent, specifically for abutting with the second guide wheel 82 to generate a horizontal abutting force on the second guide wheel 82, and then generating a torque of a specific rotation direction on the rotating shaft 3 through the second driving plate 81. The second inclined surface 732 is in an inclined upward posture, when the second guide wheel 82 transitions onto the second inclined surface 732, the second inclined surface 732 will generate an inclined upward abutting force on the second guide wheel 82, and continue to generate a torque of a specific rotation direction on the rotating shaft 3 through the second driving plate 81 by using the abutting force, such as the clockwise direction as shown.

[0074] Of course, the cover abutting surface 73 can also be arc-shaped, spherical, etc.

[0075] Generally, when the second guide wheel 82 is in abutment with the second inclined surface 732, the cover plate 2 has already been turned by 90°, so the extension length of the second inclined surface 732 can be up to the state that the cover plate 2 is turned by 90°, after which the second guide wheel 82 can be disengaged from the abutment with the second inclined surface 732, and under the inertial action of the cover plate 2, the automatic continuous cover closing movement can be realized by the gravity of the cover plate 2 itself. The second drive part 8 itself will also continue to rotate to a suspended stable state (turned by 180°) under the inertial action and gravity. Of course, the extension length of the second inclined surface 732 can also be continued to extend, so that the abutting force can be sustained to turn the cover plate 2 by more than 90°, such as 90-120°, etc., so that the cover closing efficiency is higher.

[0076] As shown in Figure 3 In an alternative embodiment regarding the first drive part 4 and the second drive part 8, the first drive part 4 and the second drive part 8 can be arranged at only one end of the rotating shaft 3, but in order to improve the turning efficiency of the cover plate 2, the first drive part 4 and the second drive part 8 can also be arranged at both ends of the rotating shaft 3. Correspondingly, the cover opening drive assembly 6 and the cover closing drive assembly 7 can be arranged on only one side wall of the conveying mechanism 5, or can be arranged on both side walls of the conveying mechanism 5.

[0077] Meanwhile, the first drive part 4 and the second drive part 8 are distributed along the circumferential direction of the rotating shaft 3, and maintain a certain central angle between them, such as 45°, etc., which can be adjusted within the range of 30°-60°. Moreover, the first drive part 4 and the second drive part 8 are symmetrically distributed on the rotating shaft 3, that is, the shape, size, etc. of the first drive plate 41 and the second drive plate 81 are the same, and the shape, size, etc. of the first guide wheel 42 and the second guide wheel 82 are the same.

[0078] Furthermore, the first drive unit 4 and the second drive unit 8, as a whole, have a specific positional relationship with the cover plate 2 on the rotating shaft 3. Specifically, when the cover plate 2 is flipped to the fully closed state, that is, when the cover plate 2 is completely attached to the surface of the feeding port of the hopper 1 (the opening angle is 0°), the cover plate 2 remains horizontal. At this time, the combined gravitational torque formed by the first drive unit 4 and the second drive unit 8 on the rotating shaft 3 is zero, and the gravitational torques cancel each other out, resulting in a stable state. This is equivalent to the line connecting the centers of the first guide wheel 42 and the second guide wheel 82. It is also in a horizontal state and is higher than the horizontal line where the cover plate 2 is located; similarly, when the cover plate 2 is flipped to the fully open state, that is, when the cover plate 2 is flipped open to completely fit the top surface of the hopper 1 (the opening angle is 180°), the cover plate 2 remains in a horizontal state, and the combined gravitational torque formed by the first drive unit 4 and the second drive unit 8 on the rotating shaft 3 is zero. The gravitational torque cancels each other out and is in a stable state. It is equivalent to the line connecting the centers of the first guide wheel 42 and the second guide wheel 82 also being in a horizontal state and lower than the horizontal line where the cover plate 2 is located.

[0079] Correspondingly, since the line connecting the centers of the first guide wheel 42 and the second guide wheel 82 is higher than the horizontal line of the cover plate 2 when the cover plate 2 is flipped to the fully closed state, and the line connecting the centers of the first guide wheel 42 and the second guide wheel 82 is lower than the horizontal line of the cover plate 2 when the cover plate 2 is flipped to the fully open state, the height of the opening abutment 62 on the opening drive rod 61 is higher than the height of the closing abutment 72 on the closing drive rod 71.

[0080] like Figures 4-8 As shown, Figure 4 This is a schematic diagram showing the structure at which the first driving unit 4 initially comes into contact with the cover-opening driving assembly 6. Figure 5 This is a schematic diagram of the structure where the first drive unit 4 abuts against the first vertical surface 631. Figure 6 This is a schematic diagram of the structure in which the first driving unit 4 abuts against the boundary between the first vertical surface 631 and the first inclined surface 632. Figure 7 This is a schematic diagram of the structure in which the first drive unit 4 abuts against the first inclined surface 632. Figure 8 This is a schematic diagram of the structure of cover plate 2 flipped to the fully open state.

[0081] In summary, the automatic opening and closing device for the silo cover provided in this embodiment has the following automatic opening operation process for cover 2:

[0082] Firstly, the conveying mechanism 5 transports the bin 1 and gradually approaches the uncovering driving vertical rod 61 until the first guide wheel 42 collides and abuts against the first vertical surface 631. From this point, the first guide wheel 42 continuously abuts against the first vertical surface 631, and the cover plate 2 is gradually opened. With the continuous transportation of the conveying mechanism 5, the first guide wheel 42 gradually transitions from abutting against the first vertical surface 631 to abutting against the first inclined surface 632, and the uncovering angle of the cover plate 2 gradually reaches 90°. Then, the conveying mechanism 5 continues to transport until the first guide wheel 42 is separated from the abutment of the first inclined surface 632, the cover plate 2 continues to flip to the completely opened state, and the first guide wheel 42 is synchronously flipped by 180° to the overhanging stable state.

[0083] As shown in Figures 9-13 , Fig. 4 is a structural schematic view of the second driving part 8 just starting to abut against the cover closing driving assembly 7, Figure 9 Fig. 5 is a structural schematic view of the second driving part 8 abutting against the second vertical surface 731, Figure 10 Fig. 6 is a structural schematic view of the second driving part 8 abutting against the boundary between the second vertical surface 731 and the second inclined surface 732, Figure 11 Fig. 7 is a structural schematic view of the second driving part 8 abutting against the second inclined surface 732, Figure 12 Fig. 8 is a structural schematic view of the cover plate 2 flipped to the completely closed state. Figure 13

[0084] In summary, the automatic cover opening and closing device for the bin cover plate provided in the embodiment has the following automatic cover closing operation process for the cover plate 2:

[0085] Firstly, the conveying mechanism transports the bin 1 with the completed ingredients and gradually approaches the cover closing driving vertical rod 71 until the second guide wheel 82 collides and abuts against the second vertical surface 731. From this point, the second guide wheel 82 continuously abuts against the second vertical surface 731, and the cover plate 2 is gradually closed. With the continuous transportation of the conveying mechanism 5, the second guide wheel 82 gradually transitions from abutting against the second vertical surface 731 to abutting against the second inclined surface 732, and the cover closing angle of the cover plate 2 gradually reaches 90°. Then, the conveying mechanism 5 continues to transport until the second guide wheel 82 is separated from the abutment of the second inclined surface 732, the cover plate 2 continues to flip to the completely closed state, and the second guide wheel 82 is synchronously flipped by 180° to the overhanging stable state.

[0086] ​The foregoing description of the disclosed embodiments enables a person skilled in the art to make or use the application. Modifications of these embodiments will occur to persons of skill in the art, and, while certain modifications are discussed, it is desired to be protected in accordance with the spirit and scope of the application. Therefore, the application is not limited to the specific embodiments shown and described, but only by the scope of the appended claims, unless otherwise specified.

Claims

1. A device for automatically opening and closing a bin cover, characterized by The device comprises a transportation mechanism (5) for transporting the bin (1), an uncovering drive assembly (6) connected to the transportation mechanism (5), a rotating shaft (3) rotatably arranged on the bin (1), a first drive part (4) connected to the rotating shaft (3), the rotating shaft (3) is connected to the cover plate (2) of the bin (1), and the uncovering drive assembly (6) is used to abut against the first drive part (4) during the transportation of the bin (1) to force the first drive part (4) to rotate at least 90° along the uncovering rotation direction. The first drive part (4) comprises a first drive plate (41) connected to the side wall of the rotating shaft (3) and extending radially, and a first guide wheel (42) arranged at the end of the first drive plate (41), which is used to abut against the uncovering drive assembly (6). The first guide wheel (42) is a roller rotatably arranged at the end of the first drive plate (41) to form a rolling abutment with the uncovering drive assembly (6). The device further comprises a cover closing drive assembly (7) connected to the transportation mechanism (5) and a second drive part (8) connected to the rotating shaft (3), the cover closing drive assembly (7) is used to abut against the second drive part (8) during the transportation of the bin (1) to force the second drive part (8) to rotate at least 90° along the cover closing rotation direction; the first drive part (4) and the second drive part (8) are distributed along the circumferential direction on the rotating shaft (3), and maintain a certain central angle between them, which is adjusted within the range of 30°-60°. The second drive part (8) comprises a second drive plate (81) connected to the side wall of the rotating shaft (3) and extending radially, and a second guide wheel (82) arranged at the end of the second drive plate (81), which is used to abut against the cover closing drive assembly (7). The uncovering drive assembly (6) comprises an uncovering drive vertical rod (61) vertically arranged on the transportation mechanism (5), and an uncovering abutment head (62) arranged on the uncovering drive vertical rod (61), the uncovering abutment head (62) is provided with an uncovering abutment surface (63) on the side wall facing the first drive part (4), which is used to abut against the first drive part (4) and form a preset motion track. The uncovering abutment surface (63) comprises a first vertical surface (631) and a first inclined surface (632) which abut against the first drive part (4) in sequence, the first vertical surface (631) is used to generate a horizontal abutment force on the first drive part (4), and the first inclined surface (632) is used to generate an inclined downward abutment force on the first drive part (4).

2. The automatic opening and closing device for a bunker cover according to claim 1, characterized by The second guide wheel (82) is a roller rotatably arranged at the end of the second drive plate (81) to form a rolling abutment with the cover closing drive assembly (7).

3. The automatic cover opening and closing device for a bunker cover according to claim 1, characterized by The first driving part (4) and the second driving part (8) have a preset included angle and are symmetrically distributed on the rotating shaft (3).

4. The automatic cover opening and closing device for a bunker cover according to claim 3, characterized by When the cover plate (2) is turned to a fully open state, the first driving part (4) and the second driving part (8) form a combined gravity torque of zero on the rotating shaft (3); when the cover plate (2) is turned to a fully closed state, the first driving part (4) and the second driving part (8) form a combined gravity torque of zero on the rotating shaft (3).

5. The automatic cover opening and closing device for a bunker cover according to claim 1, characterized by The cover closing driving assembly (7) comprises a cover closing driving vertical rod (71) vertically arranged on the conveying mechanism (5), and a cover closing abutting head (72) arranged on the cover closing driving vertical rod (71), wherein a cover closing abutting surface (73) is arranged on the side wall of the cover closing abutting head (72) facing the second driving part (8), and the cover closing abutting surface (73) is used for abutting with the second driving part (8) to form a preset movement track.

6. The automatic cover opening and closing device for a bunker cover according to claim 5, characterized by The cover closing abutting surface (73) comprises a second vertical surface (731) and a second inclined surface (732) which are sequentially abutted with the second driving part (8), the second vertical surface (731) is used for generating a horizontal abutting force on the second driving part (8), and the second inclined surface (732) is used for generating an upwardly inclined abutting force on the second driving part (8).

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