An automatic lid opening and closing device

Abstract

This utility model relates to an automatic lid opening and closing device, including a tank body, a tank opening at the top of the tank body, and a lid that cooperates with the tank opening; a guide rail assembly disposed on the tank body above the tank opening; a connecting rod assembly, one end of which is fixedly connected to the lid and the other end of which is slidably connected to the guide rail assembly; and a drive assembly driven by the connecting rod assembly, which drives the connecting rod assembly to reciprocate along the guide rail assembly to push or pull the lid to move, thereby causing the lid to press against or separate from the tank opening, thus sealing or opening the tank body. This utility model's automatic lid opening and closing device, by setting a drive assembly on the tank body to drive the connecting rod assembly to reciprocate along the guide rail assembly, enables the connecting rod assembly to move the lid against or separate from the tank opening, thereby replacing manual operation to automatically open and close the lid, saving labor costs and improving the efficiency of material loading.

Description

Technical Field

[0001] This utility model relates to the technical field of bulk material transport vehicles, and in particular to an automatic cover opening and closing device. Background Technology

[0002] Bulk material transport, compared to bagged material transport, offers advantages such as labor savings, lower costs, lower risk of material contamination, and higher loading and unloading efficiency, and is gradually replacing bagged material transport. Bulk material transport vehicles are specialized logistics equipment for transporting bulk materials such as feed and cement raw materials. (See also...) Figure 1 The bulk material transport vehicle is equipped with a tank 1 specifically for storing materials. The top of the tank 1 has a tank opening 2 and a tank cover 3 that mates with the tank opening 2. The tank cover 3 is hinged to the tank opening 2 via a travel hinge. The outer wall of the tank opening 2 has a mounting seat 4 with an internally threaded through hole. The outer wall of the tank cover 3 has a handle 5 that mates with the internally threaded through hole of the mounting seat 4. The tank cover 3 is locked or opened by connecting or disconnecting the handle 5 from the mounting seat 4 via a threaded connection. By separating the handle 5 from the mounting seat 4, the lock on the tank cover 3 can be released, allowing the tank cover 3 to be opened so that the feeding device 6 can be aligned with the tank opening 2 and the material can be loaded into the tank 1. The threaded connection between the handle 5 and the mounting seat 4 ensures a sealed connection between the tank cover 3 and the tank opening 2, effectively preventing materials from scattering or becoming contaminated during transportation.

[0003] However, the existing use of bulk material transport vehicles, especially when transferring materials between tanks, presents numerous inconveniences. Currently, the opening and closing of the tank lids is primarily done manually. A person must first unlock the lid, then open it to load materials. After loading, the lid must be manually closed and locked again to seal the tank. This manual operation is not only labor-intensive but also inefficient. Because the tanks on transport vehicles are typically large, manually opening and closing the lids requires even more physical strength and time, further increasing the workload. More importantly, slight carelessness during manual operation can damage the locking mechanism, affecting the tank's seal and leading to leaks or contamination of materials during transport.

[0004] Furthermore, the requirements for hygiene and safety in the feed transportation sector are extremely stringent. Thorough disinfection of the tanks is necessary before and after manual opening and closing to prevent the spread of viruses to humans and animals. However, current disinfection work is primarily done manually, which not only increases the complexity of the transportation process and reduces feed transportation efficiency, but also increases labor and disinfection material costs, leading to higher overall transportation costs. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide an automatic cover opening and closing device that can improve loading efficiency.

[0006] This utility model can be achieved through the following technical solutions:

[0007] An automatic lid opening and closing device, comprising:

[0008] Includes the tank body, the tank opening at the top of the tank body, and the tank cover used in conjunction with the tank opening;

[0009] A guide rail assembly is disposed on the tank body and located above the tank opening;

[0010] The connecting rod assembly has one end fixedly connected to the can lid and the other end slidably connected to the guide rail assembly;

[0011] A drive assembly is driven to the linkage assembly, which drives the linkage assembly to reciprocate along the guide rail assembly to push or pull the can lid to move so that the can lid abuts against or separates from the can opening, thereby realizing the opening and closing of the can lid.

[0012] Compared with the prior art, the automatic lid opening and closing device of this utility model drives the linkage assembly to reciprocate along the guide rail assembly by setting a driving component on the tank body. This enables the linkage assembly to drive the lid to abut against or separate from the tank opening, thereby replacing manual labor to achieve automatic lid opening and closing, saving labor costs and improving the efficiency of material loading.

[0013] Furthermore, the guide rail assembly includes two parallel upper guide rails, two parallel lower guide rails, and a groove extending downward from the lower guide rails near the can opening.

[0014] Furthermore, the guide rail assembly includes two brackets, the bottom of which is fixed to the tank body, and a groove is formed in the middle. The groove includes a straight section and a vertical section extending downward from the straight section near the end of the tank opening.

[0015] Furthermore, the connecting rod assembly includes an upper guide member that is slidably or rollingly connected to the upper guide rail, a lower guide member that is slidably or rollingly connected to the lower guide rail and the slide groove, and a connecting rod that is rotatably connected to the can lid. One end of the connecting rod is rotatably connected to the upper guide member, and the other end is rotatably connected to the lower guide member and the can lid.

[0016] Furthermore, the upper guide member includes two guide rods and a connecting plate. The two guide rods are connected to the connecting plate by clamps, and the two ends of the guide rods are respectively rotatably connected to a connecting rod.

[0017] Furthermore, the guide rail assembly includes a guide bar arranged parallel to the upper guide rail, and sliding blocks are respectively provided at both ends of the guide bar. The sliding blocks are slidably connected or rollingly connected to the guide bar to form a concave-convex fit structure.

[0018] Furthermore, the sliding block is a magnetic component, and a magnetic limiting component is provided on the upper guide rail near the end of the travel of the can opening.

[0019] Furthermore, the driving assembly includes a driving source, the driving end of which is fixedly connected to the connecting plate; and the fixed end of the driving source is fixedly connected to the guide rail assembly.

[0020] Furthermore, the driving assembly includes a driving source, a longitudinal pneumatic slide, and a transverse moving slide. The driving end of the longitudinal pneumatic slide is fixedly connected to the upper surface of the transverse moving slide. The driving source is fixed to the bottom of the transverse moving slide, and a protrusion is provided at its bottom. A groove is provided on the top of the connecting plate, and the protrusion engages or inserts into the groove. The longitudinal pneumatic slide moves the transverse moving slide up and down, so that the slider is connected to or separated from the connecting plate.

[0021] Furthermore, the automatic lid opening and closing device also includes a first support frame and a connecting rod, wherein one upper guide rail is fixedly connected to one end of the support frame at one end away from the can opening, and the other upper guide rail is fixedly connected to the other end of the support frame at one end away from the can opening; one lower guide rail is fixedly connected to one end of the connecting rod at one end away from the can opening, and the other lower guide rail is fixedly connected to the other end of the connecting rod at one end away from the can opening. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a bulk material transport vehicle and unloading device in the prior art.

[0023] Figure 2 This is a schematic diagram of the structure of an automatic cover opening and closing device provided in an embodiment of the present invention.

[0024] Figure 3 for Figure 2 A schematic diagram of the guide rail assembly.

[0025] Figure 4 for Figure 2 A schematic diagram of the linkage assembly.

[0026] Figure 5 for Figure 2 A schematic diagram of the structure of the driving component.

[0027] Figure 6 A schematic diagram of an automatic cover opening and closing device provided in another embodiment.

[0028] The technical solution of this utility model will now be described in detail with reference to the accompanying drawings. Detailed Implementation

[0029] Based on the shortcomings of existing bulk material transport vehicle tanks, this utility model aims to provide an automatic lid opening and closing device. Through analysis of existing automatic lid opening and closing devices, it was found that they use a lot of materials and are all machined parts, resulting in high processing costs. Secondly, when the bulk material transport vehicle is sealed, the relative air pressure inside the tank is about 1.5 bar, and the pressure on the lid is equivalent to a 4-ton supporting force, which places high pressure requirements on the connecting rod. Existing automatic lid opening and closing devices cannot meet this requirement and cannot open the tank smoothly.

[0030] Based on this, the present invention provides an automatic lid opening and closing device with high strength and low cost. Please refer to [link / reference]. Figure 2-6 It includes a can body 10, a guide rail assembly 20, a connecting rod assembly 30, and a drive assembly 40. The can body 10 includes a can opening 12 at the top of the can body 10 and a can lid 14 that cooperates with the can opening 12. The guide rail assembly 20 is disposed on the can body 10 and located above the can opening 12; one end of the connecting rod assembly 30 is fixedly connected to the can lid 14, and the other end is slidably connected to the guide rail assembly 20; the drive assembly 40 is drivenly connected to the connecting rod assembly 30, driving the connecting rod assembly 30 to reciprocate along the guide rail assembly 20, so as to push or pull the can lid 14 to move, thereby causing the can lid 14 to abut against the can opening 12 or separate from the can opening 12, thereby realizing the opening and closing of the can lid 14.

[0031] Specifically, the tank 10 is mounted on a transport vehicle and is a horizontally placed hollow cylinder with a discharge port at its bottom or bottom side wall, capable of loading bulk fine granular or powdery materials such as feed and cement raw materials. In this embodiment, the designed full-load capacity of the tank 10 is 29-30 tons.

[0032] The guide rail assembly 20 includes two parallel upper guide rails 22, two parallel lower guide rails 24, and a groove 53 extending downward from the lower guide rail 24 near the can opening 12. Preferably, the upper guide rail 22 protrudes from the lower guide rail 24 near the can opening 12.

[0033] In one embodiment, the guide rail assembly 20 includes two fixing members 50, which are symmetrically arranged on both sides of the can opening 12. The top surface of each fixing member 50 serves as the upper guide rail 22 and is slidably or rollably connected to the top of the connecting rod assembly 30. A groove is formed in the middle of each fixing member 50, comprising a horizontal section and a vertical section extending downward from the horizontal section. This groove serves as the lower guide rail 24 and a sliding groove 53 and is slidably or rollably connected to the bottom of the connecting rod assembly 30. Preferably, a guide strip 26 is fixed above the fixing member 50 via a connecting block, and the guide strip 26 and the upper surface of the fixing member 50 form a sliding groove.

[0034] In another embodiment, please refer to Figure 3 The guide rail assembly 20 includes two parallel upper guide rails 22, two parallel lower guide rails 24, and brackets 52. The two lower guide rails 24 are respectively fixedly connected to the two upper guide rails 22. Each lower guide rail 24 includes a horizontal tube 242 and a vertical tube 244. The top end of the vertical tube 244 is fixedly connected to the corresponding upper guide rail 22, and the bottom end is fixedly connected to the end of the horizontal tube 242. Preferably, the length of the lower guide rails 24 and the upper guide rails 22 is greater than the diameter of the can lid 14. The two brackets 52 are symmetrically arranged on both sides of the can opening 12, and their bottoms are fixedly connected to the top of the can body 10. Preferably, the inner side of the bracket 52 is threadedly connected to the side wall of the can body 12 via a connecting block for easy assembly and disassembly. One end of each of the two upper guide rails 22 is located at the top of the two brackets 52 and is fixedly connected to the corresponding bracket 52 via a connecting block 54. The two lower guide rails 24 are respectively fixed to the middle of the two supports 52. The end of the horizontal tube 242 away from the vertical tube 244 is fixed to the side 521 of the corresponding support 52. The middle of the support 52 is provided with a sliding groove 53 extending downward from the end of the horizontal tube 242. The sliding groove 53 is smoothly connected to the horizontal tube 242. In this embodiment, the support 52 is a support plate. The width of the support plate is 1 / 3 to 2 / 3 of the diameter of the can opening 12, and the height is greater than the height of the can opening 12. The upper guide rail 22 and the lower guide rail 24 are made of molded materials or standard parts to reduce the material cost and processing cost of the guide rail assembly 20. In order to enhance the sliding stability of the connecting rod assembly 30, a guide strip 26 is provided on the inner side of the upper guide rail 22 near the can cover 14. The guide strip 26 extends along the sliding groove of the upper guide rail 22. A sliding block 319 is provided on the connecting rod assembly 30 that is slidably or rollingly connected to the guide strip 26.

[0035] Please see Figure 4The connecting rod assembly 30 includes an upper guide member 31, a lower guide member 32, a U-shaped frame, and a connecting rod. The upper guide member 31 is disposed between two upper guide rails 22 and is slidably or rollably connected to the two upper guide rails 22. The driving assembly 40 is drivenly connected to the upper guide member 31. The lower guide member 32 is disposed between two lower guide rails 24 and is slidably or rollably connected to the two lower guide rails 24 and the groove 53 on the bracket 52. The bottom of the U-shaped frame is fixed to the can cover 14. The first end of the connecting rod is rotatably connected to the upper guide member 31, and the second end is rotatably connected to the lower guide member 32 and the U-shaped frame.

[0036] Please see Figure 4 The U-shaped frame includes a first U-shaped frame 33 and a second U-shaped frame 34. The bottoms of the first U-shaped frame 33 and the second U-shaped frame 34 are fixed to the can lid 14. The two first U-shaped frames 33 are positioned away from the lower guide rail 24, and the two second U-shaped frames 34 are positioned close to the lower guide rail 24, and are rotatably connected to both ends of the lower guide member 32. The line connecting the two first U-shaped frames 33 and the line connecting the two second U-shaped frames 34 are perpendicular to the upper guide rail 22.

[0037] The connecting rod includes a first connecting rod 35 and a second connecting rod 36. The first ends of the two first connecting rods 35 are rotatably connected to both ends of the upper guide member 31, and the second ends are rotatably connected to the two first U-shaped frames 33. The first ends of the two second connecting rods 36 are rotatably connected to both ends of the upper guide member 31, and the second ends are rotatably connected to both ends of the lower guide member 32. Preferably, the two first connecting rods 35 and the two second connecting rods 36 are parallel to each other.

[0038] Further, the upper guide member 31 includes a first guide rod 312, a second guide rod 314, and a connecting plate 316, wherein the first guide rod 312 and the second guide rod 314 are respectively connected to the connecting plate 316. A sliding block 319 is fixed to each end of the first guide rod 312 and each end of the second guide rod 314, and the sliding block 319 forms a concave-convex fit structure with the corresponding guide strip 26. Preferably, the guide strip 26 is a hexagonal steel column, and the sliding block 319 is a roller with a groove on its surface, wherein the sliding block 319 is in a rolling connection with the guide strip 26.

[0039] The first connecting rod 35 includes a first threaded spherical bearing and a second threaded spherical bearing that cooperate with each other. The second connecting rod 36 includes a third threaded spherical bearing and a fourth threaded spherical bearing that cooperate with each other. The lower guide member 32 is a guide rod. The first guide rod 312 is rotatably connected to the first threaded spherical bearing of the first connecting rod 35, and its two ends are slidably connected to the two upper guide rails 22 respectively. The second threaded spherical bearing of the first connecting rod 35 is rotatably connected to the corresponding first U-shaped frame 33 through a pin. The second guide rod 314 is rotatably connected to the third threaded spherical bearing of the second connecting rod 36, and its two ends are slidably connected to the two upper guide rails 22 respectively. The fourth threaded spherical bearing of the second connecting rod 36 is rotatably connected to the corresponding first U-shaped frame 33 through a guide rod. In other embodiments, the upper guide member 31 may be a rectangular sliding frame. In this embodiment, the first and third threaded spherical bearings are external threaded spherical bearings, and the second and fourth threaded spherical bearings are internal threaded spherical bearings.

[0040] Preferably, the upper guide member 31 further includes clamps 318 for restricting the positions of the first connecting rod 35 and the second connecting rod 36. The first guide rod 312 and the second guide rod 314 are fixedly connected to the connecting plate 316 via the clamps 318. Two clamps 318 are fixedly mounted on the first guide rod 312, located between the two first connecting rods 35 and abutting against each of the two first connecting rods 35. Two clamps 318 are fixedly mounted on the second guide rod 314, located between the two second connecting rods 36 and abutting against each of the two second connecting rods 36. The connecting plate 316 is located above the guide rods, and the top of the clamps 318 is fixedly connected to the bottom of the connecting plate 316. Alternatively, the connecting plate 316 is located below the guide rods, and the bottom of the clamps 318 is fixedly connected to the top of the connecting plate 316.

[0041] In other embodiments, the lower guide member 32 includes a first guide rod and a second guide rod. The two ends of the first guide rod are rotatably connected to the second ends of two first connecting rods 35, and rotatably connected to two first U-shaped frames 33, respectively. The second guide rod is slidably or rollingly connected to the lower guide rail 24 and the slide groove 53, and its two ends are rotatably connected to the second ends of two second connecting rods 36, and rotatably connected to two second U-shaped frames 34, respectively.

[0042] Please see Figure 5The driving component 40 can be mounted on the tank 10, and its driving source is a cylinder, an electric push rod, a hydraulic push rod, or a lead screw reciprocating mechanism. In this embodiment, the driving component 40 is a rodless cylinder, which includes a cylinder barrel 42 and a slider 44. The cylinder barrel 42 is fixed on the tank 14 and is arranged parallel to the upper guide rail 22. The slider 44 is slidably mounted on the cylinder barrel 42 and is magnetically coupled or mechanically connected to the piston inside the cylinder barrel 42. The bottom of the slider 44 is fixedly connected to the top of the connecting plate 316. When the piston of the rodless cylinder reciprocates along the cylinder barrel 42, the slider 44 drives the upper guide member 31 to reciprocate along the upper guide rail 22.

[0043] To enhance the structural stability of the guide rail assembly 20, the automatic cover opening and closing device further includes a first support frame 62 and a second support frame 64. The first support frame 62 is a U-shaped support frame, with its two side walls fixedly connected to the ends of the two upper guide rails 22 near the cylinder 42, and its bottom wall fixedly connected to the tail of the cylinder 42. Preferably, the two side walls of the first support frame 62 are fixedly connected to the bottom wall of the first support frame 62 by a support plate 63 to prevent deformation of the first support frame 62. More preferably, the first support frame 62 is fixed to the tank body 10 by a support plate to support the weight of the tail of the support frame 62 and prevent its deformation.

[0044] The second support frame 64 is an inverted U-shaped support frame, with its two side walls fixedly connected to the outer sides of the two upper guide rails 22, and its top fixedly connected to the head of the cylinder 42. The top of the second support frame 64 includes a straight section and a vertical section. The head of the cylinder 42 is fixedly connected to the vertical section, and a gap is provided between the vertical section and the upper guide member 31 to avoid interfering with the sliding of the upper guide member 31. More preferably, the vertical tubes 244 of the two lower guide rails 24 are fixedly connected to both ends of a tail connecting rod 246, further enhancing the structural stability of the guide rail assembly 20.

[0045] To prevent the can lid 14 from loosening due to movement of the upper guide member 31, which would affect the sealing performance of the can body 10, a magnetic limiting member 56 is provided at the end of the stroke of the upper guide rail 22 near the can opening, and the sliding block 319 is either a magnetic element or has a magnet fixed to its surface. When the can body 10 is in a sealed state, the magnetic limiting member 56 can attract the sliding block 319, preventing it from sliding.

[0046] The working principle of the automatic lid opening and closing device in this embodiment is as follows: When the can 10 needs to be opened, the piston of the rodless cylinder moves along the cylinder 42 from the head to the tail of the cylinder 42, driving the slider 44 to slide towards the tail of the cylinder 42. The slider 44 drives the first guide rod 312 and the second guide rod 314 to slide along the upper guide rail 22 towards the tail of the cylinder 42 through the connecting plate 316. At the same time, the second guide rod 314 drives the lower guide member 32 to slide upward along the slide groove 53 of the bracket 52 through the second connecting rod 36. At this time, the first connecting rod 35 and the second connecting rod 36 pull the can lid 14 upward and separate it from the can opening 12. Then, the second guide rod 314 drives the lower guide member 32 to slide along the lower guide rail 24 towards the tail of the cylinder 42, thereby pulling the can lid 14 to move horizontally away from the can opening 12, so that the can opening 12 is exposed, which makes it convenient for the feeding device to align with the can opening 12 and load materials into the can 10.

[0047] When the tank 10 needs to be sealed, the piston of the rodless cylinder moves along the cylinder 42 from the tail to the head, causing the slider 44 to slide towards the head of the cylinder 42. The slider 44, through the connecting plate 316, drives the first guide rod 312 and the second guide rod 314 to slide along the upper guide rail 22 towards the head of the cylinder 42. At the same time, the second guide rod 314, through the second connecting rod 36, drives the lower guide member 32 to slide along the lower guide rail 24 towards the head of the cylinder 42. The first connecting rod 35 and the second connecting rod 36 push the can lid 14 to move horizontally towards the can opening 12, so that the orthographic projections of the can opening 12 and the can lid 14 coincide or substantially coincide. Then, the second guide rod 314 drives the lower guide member 32 to slide downward along the slide groove 53 of the bracket 52, so that the can lid 14 moves downward and abuts against the can opening 12, thereby sealing the can body 10. At this time, the magnetic limiting member 56 attracts the sliding block 319, and prevents the can lid 14 from loosening by preventing the sliding block 319 from sliding.

[0048] Compared to existing technologies, the automatic lid opening and closing device in this embodiment uses a drive assembly on the tank body to drive the linkage assembly to reciprocate along the guide rail assembly. This allows the linkage assembly to move the lid against or away from the tank opening, thus replacing manual operation and saving labor costs and improving loading efficiency. The structural stability of the guide rail assembly is enhanced by using brackets, a first support frame, and a second support frame, preventing deformation and ensuring reliable operation of the device. The interlocking of the guide strip and sliding block enhances the sliding stability of the linkage assembly, reducing shaking and deviation during operation. Magnetic limiting components and magnetic sliding blocks are used; when the tank is sealed, the magnetic limiting components attract the sliding block, preventing it from sliding and thus avoiding lid loosening due to upper guide component movement, ensuring tank sealing and preventing material leakage. Replacing the guide rail of the automatic lid opening and closing device with molded materials or standard parts significantly reduces processing costs. Using fisheye bearings (standard parts) instead of ordinary linkages greatly reduces costs and increases the strength of the linkage. The drive source of the drive assembly is a rodless cylinder, which can shorten the overall length of the drive assembly and reduce costs. According to tests, this solution reduces the total material cost by about 50% and the processing cost by about 80% compared with the existing automatic cover opening and closing device.

[0049] Because the above embodiments require a drive assembly 40 to be installed in the tank 10 of each transport vehicle, the cost is relatively high. Therefore, this embodiment optimizes and improves the setting of the drive assembly by placing the drive assembly 40 on the unloading device. Before material loading, the tank 10 moves to below the unloading device, and the drive assembly 40 on the unloading device connects with the connecting rod assembly 30 on the tank 10, enabling it to drive the connecting rod assembly 30 to slide and open the tank 10. After material loading, the drive assembly 40 drives the connecting rod assembly 30 to slide and seal the tank 10, and then separates from the connecting rod assembly 30, allowing the tank 10 to leave below the unloading device.

[0050] Specifically, please refer to Figure 6 The drive assembly 40 includes a longitudinal pneumatic slide 46 and a transverse sliding slide 48. The longitudinal pneumatic slide 46 slidably supports the transverse sliding slide 48 and is used to translate the transverse sliding slide 48 vertically. The transverse sliding slide 48 is used to translate the connecting rod assembly 30, causing it to slide along the guide rail assembly 20.

[0051] The longitudinal pneumatic slide 46 includes a fixed part and a sliding part. The fixed part is fixed to the unloading device (not shown) by a mounting plate 45, and the bottom of the sliding part is fixed to the upper surface of the transverse moving slide 48.

[0052] The transverse sliding table 48 includes a transverse connecting plate 482 and a longitudinal connecting plate 484. The tops of the two longitudinal connecting plates 484 are respectively fixed to the two ends of the bottom of the transverse connecting plate 482. The cylinder is disposed between the two longitudinal connecting plates 484, and the head and tail of the cylinder barrel 42 are respectively fixed to the two longitudinal connecting plates 484. The bottom of the cylinder slider 44 has a protrusion 442, and the connecting plate 316 has a groove 317 at one end near the cylinder. The up and down movement of the transverse sliding table 48 can drive the protrusion 442 of the slider 44 into or out of the groove 317. After the protrusion 442 of the slider 44 enters the groove 317, the transverse movement of the slider 44 can cause the protrusion 442 to abut against the groove 317, thereby pulling or pushing the connecting plate 316 to slide.

[0053] The working principle of the automatic lid opening and closing device is as follows: Before material loading, the longitudinal pneumatic slide 46 drives the transverse moving slide 48 to move downwards, so that the protrusion 442 of the slider 44 of the rodless cylinder enters the groove 317 of the connecting plate 316. When the tank 10 needs to be opened, the piston of the cylinder moves along the cylinder 42 from the head to the tail of the cylinder 42, driving the slider 44 to slide towards the tail of the cylinder 42. The protrusion 442 of the slider 44 abuts against the side wall of the groove 317, thereby driving the connecting rod assembly 30 to slide along the guide rail assembly 20 towards the tail of the cylinder 42, thereby pulling the lid 14 upwards and separating it from the tank opening 12. Then, it moves horizontally away from the tank opening 12, exposing the tank opening 12, which facilitates the material loading of the tank 10 by the unloading device. When the tank 10 needs to be sealed, the piston of the rodless cylinder moves along the cylinder 42 from the tail to the head, causing the slider 44 to slide towards the head of the cylinder 42. The protrusion 442 of the slider 44 abuts against the other side wall of the groove 317, thereby causing the connecting rod assembly 30 to slide along the guide rail assembly 20 towards the head of the cylinder 42. This pushes the tank cover 14 to move horizontally towards the tank opening 12, so that the orthographic projections of the tank opening 12 and the tank cover 14 coincide. Then, the cover moves downward and abuts against the tank opening 12, thus sealing the tank 10. At this time, the magnetic limiting member 56 attracts the sliding block 319, preventing the tank cover 14 from loosening by preventing the sliding block 319 from sliding. After the material loading is finished, the longitudinal pneumatic slide 46 drives the transverse moving slide 48 to move upward, causing the protrusion 442 of the slider 44 of the cylinder to separate from the groove 317 of the connecting plate 316.

[0054] This automatic lid opening and closing device offers the following advantages: By integrating the drive assembly onto the unloading device, rather than onto the tank of each transport vehicle, overall costs are reduced. During material loading, the tank moves below the unloading device for connection; after loading, it separates, improving the equipment's versatility and economy. The drive assembly employs a longitudinal pneumatic slide and a transverse moving slide. The longitudinal pneumatic slide can move vertically and horizontally, while the transverse moving slide can move the connecting rod assembly, enabling the device to flexibly open and seal the tank lid, adapting to different working scenarios and needs.

[0055] This utility model is not limited to the above-described embodiments. If any modifications or variations to this utility model do not depart from the spirit and scope of this utility model, and if such modifications and variations fall within the scope of the claims and equivalent technologies of this utility model, then this utility model also intends to include such modifications and variations.

Claims

1. An automatic cap opening and closing device comprising a can body, a can opening formed on the top of the can body, and a can cap used in cooperation with the can opening, characterized in that, Also includes: A guide rail assembly is disposed on the tank body and located above the tank opening; The connecting rod assembly has one end fixedly connected to the can lid and the other end slidably connected to the guide rail assembly; A drive assembly is driven to the linkage assembly, which drives the linkage assembly to reciprocate along the guide rail assembly to push or pull the can lid to move so that the can lid abuts against or separates from the can opening, thereby realizing the opening and closing of the can lid.

2. The automatic lid opening and closing device according to claim 1, wherein The guide rail assembly includes two parallel upper guide rails, two parallel lower guide rails, and a groove extending downward from the lower guide rails near the can opening.

3. The automatic lid opening and closing device according to claim 2, wherein The guide rail assembly includes two brackets, the bottom of which is fixed to the tank body and a groove is formed in the middle. The groove includes a straight section and a vertical section extending downward from the straight section near the end of the tank opening.

4. The automatic lid opening and closing device according to claim 3, wherein The connecting rod assembly includes an upper guide member that is slidably or rollingly connected to the upper guide rail, a lower guide member that is slidably or rollingly connected to the lower guide rail and the slide groove, and a connecting rod that is rotatably connected to the can lid. One end of the connecting rod is rotatably connected to the upper guide member, and the other end is rotatably connected to the lower guide member and the can lid.

5. The automatic lid opening and closing device according to claim 4, wherein The upper guide member includes two guide rods and a connecting plate. The two guide rods are connected to the connecting plate by clamps, and the two ends of the guide rods are respectively rotatably connected to a connecting rod.

6. The automatic cover opening and closing device according to claim 5, characterized in that, The guide rail assembly includes a guide bar arranged parallel to the upper guide rail, and sliding blocks are respectively provided at both ends of the guide bar. The sliding blocks are slidably connected or rollingly connected to the guide bar to form a concave-convex fit structure.

7. The automatic cover opening and closing device according to claim 6, characterized in that, The sliding block is a magnetic component, and a magnetic limiting component is provided on the upper guide rail near the end of the travel of the can opening.

8. The automatic cover opening and closing device according to claim 7, characterized in that, The drive assembly includes a drive source, the drive end of which is fixedly connected to the connecting plate; and the fixed end of the drive source is fixedly connected to the guide rail assembly.

9. The automatic cover opening and closing device according to claim 7, characterized in that, The drive assembly includes a drive source, a longitudinal pneumatic slide, and a transverse moving slide. The drive end of the longitudinal pneumatic slide is fixedly connected to the upper surface of the transverse moving slide. The drive source is fixed to the bottom of the transverse moving slide, and a protrusion is provided at its bottom. A groove is provided on the top of the connecting plate, and the protrusion engages or inserts into the groove. The longitudinal pneumatic slide moves the transverse moving slide up and down, so that the slider connects or separates from the connecting plate.

10. The automatic cover opening and closing device according to any one of claims 2-9, characterized in that, It also includes a first support frame and a connecting rod, wherein one upper guide rail is fixedly connected to one end of the support frame at the end away from the tank opening, and the other upper guide rail is fixedly connected to the other end of the support frame at the end away from the tank opening; one lower guide rail is fixedly connected to one end of the connecting rod at the end away from the tank opening, and the other lower guide rail is fixedly connected to the other end of the connecting rod at the end away from the tank opening.

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