A container closure assembly

Abstract

The application provides a container cover assembly, relates to the technical field of sand boxes, and comprises a mounting support, a power element connected with the mounting support and having an output shaft, a transmission locking mechanism connected with the output shaft and having a first locking part capable of rotating and moving relative to the output shaft, the transmission locking mechanism further being provided with a first matching part, a locking seat selectively matched with the first locking part to limit opening of a cover body, the cover body being rotationally connected with the mounting support and provided with a second matching part, the first matching part and the second matching part selectively abutting on a movement path. The three actions of opening, closing and locking of the cover body can be automatically completed by only arranging one power element, the production cost of the container cover assembly is reduced, the volume of the container cover assembly is reduced, the container cover assembly can be applied to sand boxes of different models, the locking capacity of the cover body is high, and accidental opening of the cover body can be effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of sandbox technology, and more specifically, to a container lid assembly. Background Technology

[0002] The locomotive sand spreading system is an auxiliary device used by railway locomotives to improve the adhesion between the wheels and the rails. Its core purpose is to prevent the locomotive from slipping during starting or braking by spraying sand onto the rail surface. The sand box, as the sand storage container of the sand spreading system, is usually installed on the bottom or side of the locomotive and stores special sand inside. The sand box cover serves two purposes: firstly, it seals and protects the sand inside the sand box, preventing foreign objects from entering and the sand from getting damp, thus maintaining the normal operation of the system; secondly, it allows the sand box to be opened when the locomotive returns to the depot for maintenance, allowing manual addition of sand.

[0003] In the traditional manual sand-addition process, workers need to carry tools to the sand box location on the locomotive. First, they manually open the sand box cover, usually by loosening the locking device and then lifting or unscrewing the cover. After adding sand, the amount of sand in the sand box needs to be checked and the cover closed promptly to ensure it is locked in place. This process relies heavily on manual operation and involves carrying and repeatedly opening and closing the cover.

[0004] With the increasing demand for automated operation and maintenance, some stations need to automate the opening and closing of sand box covers. However, most locomotive sand box covers are still manually operated, making it difficult to achieve automatic opening and closing, which limits the realization of full-process automation and unattended operation, and also affects operational efficiency and safety. Summary of the Invention

[0005] The purpose of this invention is to provide a container lid assembly to improve the aforementioned problems. To achieve this purpose, the technical solution adopted by this invention is as follows:

[0006] This application provides a container lid assembly, comprising: a mounting bracket adapted to be connected to a sand box body; a power component connected to the mounting bracket and having a rotatable output shaft; a transmission locking mechanism connected to the output shaft and having a first locking portion rotatable and movable relative to the output shaft, the first locking portion being movable between a locked position and an unlocked position, the transmission locking mechanism further comprising a first mating portion; a locking seat adapted to be connected to the sand box body and / or the mounting bracket and spaced apart from the transmission locking mechanism, the locking seat selectively mating with the first locking portion to restrict the lid from opening; and a lid rotatably connected to the mounting bracket and having a second mating portion, the first mating portion and the second mating portion selectively abutting each other on the movement path.

[0007] According to some embodiments of this application, the transmission locking mechanism is configured such that: when the output shaft rotates in a first direction, the first locking part is first driven to move from the locked position to the unlocked position, and then the cover is opened by the stop of the first mating part and the second mating part; when the output shaft rotates in a second direction, the cover is first driven to close, and then the first locking part is driven to move to the locked position; wherein, in the locked position, the first locking part cooperates with the locking seat and restricts the opening of the cover; in the unlocked position, the first locking part disengages from the locking seat, and the cover can rotate relative to the mounting bracket.

[0008] According to some embodiments of this application, the transmission locking mechanism includes a connecting plate, a first mating part is provided on the connecting plate, and a mating rod extending radially is provided on the outer peripheral wall of the connecting plate. The free end of the mating rod is rotatably connected to a connecting rod, and the free end of the connecting rod is rotatably connected to a locking block. The locking block is movably connected to the cover and is provided with a first locking part.

[0009] According to some embodiments of this application, the locking seat is provided with a second locking part, one of the first locking part and the second locking part is a locking tongue, and the other of the first locking part and the second locking part is a locking groove.

[0010] According to some embodiments of this application, the connecting plate is slidably connected to the output shaft, the mating rod is provided with a mating hole, the connecting rod is provided with a first connecting rod, the free end of the first connecting rod is rotatably mated with the mating hole, and the connecting plate slides along the axial direction of the output shaft to selectively house the first connecting rod in the mating hole.

[0011] According to some embodiments of this application, the connecting plate can move along the axial direction of the output shaft to switch the transmission locking mechanism between an automatic drive state and a manual operation state; in the manual operation state, the first connecting rod disengages from the mating hole, and the first mating part and the second mating part are spaced apart from each other in the axial direction of the output shaft, so that the cover can be manually opened or closed; in the free drive state, the first connecting rod is received in the mating hole.

[0012] According to some embodiments of this application, a limit block is provided at the free end of the output shaft, the connecting plate is slidably disposed between the limit block and the power component, and a return spring is sleeved on the outer periphery of the output shaft, with the two ends of the return spring respectively abutting against the power component and the connecting plate.

[0013] According to some embodiments of this application, the two ends of the output shaft protrude from the power component, and the two ends of the output shaft are respectively provided with connecting plates. The cover is provided with two connecting ears, which are rotatably connected to the mounting bracket. The two connecting ears are respectively provided with a second mating part. The connecting rod includes two second connecting rods spaced apart from each other along the length direction of the sand box body. One end of the two second connecting rods on the same side is rotatably connected to two mating rods, and the other end of the two second connecting rods on the same side is rotatably connected to a locking block.

[0014] According to some embodiments of this application, the connecting plate is provided with a first stop block configured as a first mating part, and the cover is provided with a second stop block configured as a second mating part. The first stop block can selectively abut against the second stop block in the circumferential direction of the output shaft.

[0015] According to some embodiments of this application, the first stop block or the second stop block is provided with a threaded hole, and a stop rod is threadedly connected to the threaded hole. The free end of the stop rod is adapted to stop against the second stop block or the first stop block when the connecting rod rotates toward the locking seat.

[0016] According to some embodiments of this application, the cover is provided with a connecting seat, the connecting seat is provided with a sliding groove extending from the side of the cover near the power member to the side away from the power member, and a portion of the locking block is slidably disposed in the sliding groove.

[0017] According to some embodiments of this application, a detection element is provided on the connecting plate, the detection element moves with the transmission locking mechanism, and a position sensor is provided on the mounting bracket or power component, the position sensor being adapted to detect the position of the detection element.

[0018] The beneficial effects of this invention are as follows:

[0019] According to the container lid assembly of this application, only one power component is needed to automatically complete the three actions of opening, closing and locking the lid. This not only reduces the production cost of the container lid assembly, but also reduces the size of the container lid assembly, making the container lid assembly of this application applicable to different models of sand boxes. At the same time, it has a strong locking ability for the lid, which can effectively prevent the lid from being opened accidentally.

[0020] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing embodiments of the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a structural diagram of the container lid assembly;

[0023] Figure 2 This is a schematic diagram showing the cover closed and the first locking part disengaged from the locking seat;

[0024] Figure 3 A schematic diagram showing the lid partially open;

[0025] Figure 4 A schematic diagram showing the lid fully open;

[0026] Figure 5 This is a schematic diagram showing the lid partially closed.

[0027] Figure 6 A schematic diagram showing a threaded hole for the first stop portion;

[0028] Figure 7 A schematic diagram showing a return spring installed on the output shaft;

[0029] Figure 8 This is a schematic diagram showing the fit between the container lid assembly and the sandbox body.

[0030] The markings in the diagram are: 1. Sand box body; 10. Mounting bracket; 20. Power component; 21. Return spring; 31. Connecting plate; 311. Matching rod; 312. First stop block; 313. Threaded hole; 314. Sensing screw; 32. Connecting rod; 321. Second connecting rod; 322. Third connecting rod; 33. Locking block; 40. Locking seat; 50. Cover; 51. Connecting ear; 511. Second stop block; 52. Connecting seat. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this invention, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] To automate the operation of sandbox lids and enable their integration with robots, a power unit is typically used to drive the lid's rotation or movement. While a rotational power unit provides a short travel distance for the lid, it requires an additional power unit to lock it in place, preventing accidental opening. This increases the number of power units, raising manufacturing costs. Furthermore, the independent operation of these two power units results in lower reliability and a larger space requirement, making them unsuitable for certain sandbox models (e.g., the HXD3C end-cap sandbox). A movement power unit, while utilizing its self-locking capability for locking, requires even more space due to the lid's movement and the power unit's length, making it unsuitable for many sandbox models and offering low locking reliability. Therefore, there is an urgent need for a compact, highly reliable sandbox lid capable of performing opening, closing, and locking actions within a confined space.

[0034] like Figures 1-8As shown, this embodiment provides a container lid assembly, including: a mounting bracket 10, a power component 20, a transmission locking mechanism, a locking seat 40, and a lid 50. The mounting bracket 10 is adapted to be connected to one side of the sand box body 1 in the width direction. The power component 20 is connected to the mounting bracket 10 and has a rotatable output shaft. The axis of the output shaft is parallel to the length direction of the sand box body 1. The transmission locking mechanism is connected to the output shaft and has a first locking part that can rotate and move relative to the output shaft. The movement direction of the first locking part is orthogonal to the axis of the output shaft. The transmission locking mechanism is also provided with a first mating part. The locking seat 40 is adapted to be connected to the other side of the sand box body 1 in the width direction. The locking seat 40 can selectively cooperate with the first locking part to restrict the rotational freedom of the first locking part relative to the sand box body 1. The lid 50 is rotatably connected to the mounting bracket 10 and movably connected to the first locking part. The lid 50 is provided with a second mating part. The first mating part and the second mating part can selectively abut against each other in the movement path (here, it can be abutting against each other in the circumferential direction of the output shaft).

[0035] It should be noted that here, the transmission locking mechanism and the locking seat 40 can be connected to the sand box body 1 respectively, and the transmission locking mechanism and the locking seat 40 can be located on both sides of the filling port. Specifically, the sand box body 1 is connected to the locomotive, the width direction of the sand box body 1 is parallel to the width direction of the locomotive, and the mounting bracket 10 can be set on the side of the sand box body 1 closer to the locomotive. In this case, the locking seat 40 is set on the side of the sand box body 1 away from the locomotive; alternatively, the mounting bracket 10 can be set on the side of the sand box body 1 away from the locomotive, and the locking seat 40 is set on the side of the sand box body 1 closer to the locomotive; alternatively, the mounting bracket 10 can be set on one side of the length direction of the sand box body 1, and the locking seat 40 is set on the other side of the length direction of the sand box body 1. There is no limitation here.

[0036] Of course, both the transmission locking mechanism and the locking seat 40 can be connected to the mounting bracket 10. Specifically, both the transmission locking mechanism and the locking seat 40 are connected to the sand box body 1 through the mounting bracket 10. At this time, the mounting bracket 10 is provided with a through opening that is directly opposite the filling port. The locking seat 40 and the transmission locking mechanism are spaced apart from each other and are located on both sides of the through opening.

[0037] It should also be noted that the first locking part can move between the locked position and the unlocked position. When the first locking part is in the locked position, the first locking part cooperates with the locking seat 40 and restricts the opening of the cover 50. When the first locking part is in the unlocked position, the first locking part disengages from the locking seat 40, and the cover 50 can rotate relative to the mounting bracket 10.

[0038] In some embodiments, the container lid assembly of this application is adapted to be connected to the sand box body 1. The sand box body 1 is generally cuboid. The length direction of the sand box body 1 is parallel to the longitudinal direction of the locomotive, and the width direction of the sand box body 1 is parallel to the width direction of the locomotive. A filling port is provided on the top of the sand box body 1, through which workers can fill sand into the sand box body 1.

[0039] A mounting bracket 10 is provided on the top of one side of the sand box body 1 in the width direction, and the mounting bracket 10 is located close to the locomotive. A locking seat 40 is provided on the other side of the sand box body 1 in the width direction. A power component 20 is also provided on the top of the sand box body 1. The power component 20 is located on one side of the sand box body 1 and is fixedly connected to the mounting bracket 10. The power component 20 has a rotatable output shaft. The axial direction of the output shaft is parallel to the length direction of the sand box body 1. The output shaft is fixedly connected to a transmission locking mechanism. The transmission locking mechanism has a first locking part. When the power component 20 is working, it can drive the first locking part to rotate and move relative to the output shaft. The mounting bracket 10 is also rotatably connected to a cover 50. The cover 50 can rotate to selectively open or close the filling port. A second mating part is provided on the cover 50. A first mating part is provided on the transmission locking mechanism. The first mating part is adapted to cooperate with the second mating part in the circumferential direction of the output shaft, so that when the transmission locking mechanism rotates, it can drive the cover 50 to rotate through the first mating part and the second mating part.

[0040] It is understood that the container lid assembly of this application has a first state and a second state. In the first state, the container lid assembly closes the filling port of the sand box body 1 and the first locking part engages with the locking seat 40 to restrict the rotational freedom of the lid 50 relative to the sand box body 1 (to prevent the lid 50 from accidentally rotating relative to the sand box body 1 and causing the filling port to open). At this time, the first locking part is in the locked position. In the second state, the first locking part disengages from the locking seat 40 and the lid 50 opens the filling port.

[0041] When the container lid assembly switches from the first state to the second state, the power unit 20 operates to rotate the output shaft. The rotation of the output shaft drives the transmission locking mechanism to operate. The transmission locking mechanism has two movement modes. First, the output shaft rotates to move the first locking part (towards the power unit 20) so that the first locking part gradually disengages from the locking seat 40. When the first and second mating parts stop in the circumferential direction, the first locking part completely disengages from the locking seat 40. At this time, the first locking part is in the unlocked position. At this time, the rotation of the output shaft can drive the first locking part and the lid 50 to rotate away from the filling port to open the filling port.

[0042] Similarly, when the container lid assembly switches from the second state to the first state, the power component 20 operates to rotate the output shaft. The rotation of the output shaft drives the first locking part to rotate toward the filling port. At this time, the lid 50 also rotates toward the filling port under the action of gravity. However, due to the cooperation between the first and second mating parts, the rotation of the lid 50 will be synchronized with the rotation of the first locking part, thereby avoiding relative displacement between the first locking part and the lid 50. After the lid 50 closes the filling port (at this time, the first locking part is in the unlocked position), the output shaft continues to rotate, which can drive the first locking part to move toward the locking seat 40 and make the first locking part cooperate with the locking seat 40 (at this time, the first locking part is in the locked position), so as to avoid the first locking part from accidentally rotating relative to the locking seat 40, thereby avoiding the lid 50 from accidentally rotating relative to the sand box body 1.

[0043] In other words, by adopting the above-mentioned configuration, this application can achieve the three actions of opening and closing (rotation of the cover 50) and locking (movement of the first locking part) of the cover 50 by using a single power component 20, while reducing the stroke of the cover 50 (compared to the scheme of opening or closing the filling port by using linear motion of the cover 50). This avoids the need to set up separate power components 20 for driving the opening and closing and locking of the cover 50, reduces the number of power components 20, and lowers the production cost of the container cover assembly.

[0044] According to the container lid assembly of this application, only one power component 20 is needed to automatically complete the three actions of opening, closing and locking the lid 50. This not only reduces the production cost of the container lid assembly, but also reduces the size of the container lid assembly, so that the container lid assembly of this application can be applied to different models of sand boxes. At the same time, it has a strong locking ability for the lid 50, which can effectively prevent the lid 50 from being opened accidentally.

[0045] According to some embodiments of this application, the transmission locking mechanism is configured such that: when the output shaft rotates in a first direction, the first locking part is first driven to move from the locked position to the unlocked position, and then the cover 50 is opened by the stop of the first mating part and the second mating part; when the output shaft rotates in a second direction, the cover 50 is first driven to close, and then the first locking part is driven to move to the locked position; wherein, in the locked position, the first locking part cooperates with the locking seat 40 and restricts the opening of the cover 50; in the unlocked position, the first locking part disengages from the locking seat 40, and the cover 50 can rotate relative to the mounting bracket 10.

[0046] It is understandable that, such as Figures 1-5As shown, when the output shaft rotates counterclockwise (first direction), the output shaft first drives the first locking part to move from the locked position to the unlocked position. At this time, the first mating part and the second mating part cooperate with each other. The output shaft can continue to rotate to drive the cover 50 to rotate relative to the mounting bracket 10 to open. When the output shaft rotates clockwise (second direction), the output shaft rotates to drive the cover 50 to rotate relative to the mounting bracket 10 to close. When the cover 50 is closed, the first locking part is in the unlocked position. At this time, the output shaft can continue to rotate to drive the first locking part to move to cooperate with the locking seat 40, thereby realizing the switching of the first locking part from the unlocked position to the locked position.

[0047] According to some embodiments of this application, the transmission locking mechanism includes a connecting plate 31, a first mating part is provided on the connecting plate 31, and a mating rod 311 extending radially is provided on the outer peripheral wall of the connecting plate 31. A connecting rod 32 is rotatably connected to the free end of the mating rod 311, and a locking block 33 is rotatably connected to the free end of the connecting rod 32. The locking block 33 is movably connected to the cover 50 and is provided with a first locking part.

[0048] In some embodiments, when the container lid assembly switches from the first state to the second state, the power member 20 operates to rotate the output shaft, which in turn drives the connecting plate 31 to rotate. At this time, the first mating part and the second mating part do not stop in the circumferential direction of the output shaft. That is, at this time, the rotation of the connecting plate 31 can only drive the connecting rod 32 to move. The movement of the connecting rod 32 can drive the locking block 33 to move away from the locking seat 40, so that the first locking part gradually disengages from the locking seat 40. When the first locking part completely disengages from the locking seat 40, the first mating part and the second mating part stop in the circumferential direction of the output shaft. At this time, as the output shaft continues to rotate, the connecting plate 31 can simultaneously drive the first locking part and the lid 50 to rotate away from the filling port, thereby opening the filling port.

[0049] In other embodiments, when the container lid assembly switches from the second state to the first state, the power component 20 operates to rotate the output shaft, which in turn drives the connecting plate 31 to rotate. At this time, the lid 50 will rotate toward the filling port under the action of gravity. However, due to the presence of the first mating part and the second mating part (the first mating part and the second mating part abut against each other to limit the rotation speed of the lid 50), the lid 50 will rotate synchronously with the connecting plate 31. When the lid 50 rotates to close the filling port, the connecting plate 31 continues to rotate and will drive the locking block 33 to move relative to the lid 50 toward the locking seat 40 through the connecting rod 32 until the first locking part engages with the locking seat 40.

[0050] It should be noted that after the first locking part engages with the locking seat 40, the cover 50 and the power component 20 are mechanically decoupled. In other words, the mechanical connection between the power component 20 and the cover 50 is broken, so that the power component 20 no longer directly affects or restricts the state of the cover 50, reducing the impact on the power component 20 and improving safety and durability.

[0051] According to some embodiments of this application, a second locking part is provided on the locking seat 40. One of the first locking part and the second locking part is a locking tongue extending along the width direction of the sand box body 1, and the other of the first locking part and the second locking part is a locking groove extending along the width direction of the sand box body 1.

[0052] In some embodiments, the first locking part is configured as a locking tongue. In this case, the locking block 33 is provided with a locking tongue that extends toward the locking seat 40 in the width direction of the sand box body 1. The locking seat 40 is provided with a locking groove, and the extension direction of the locking groove is parallel to the width direction of the sand box body 1 (here, the locking groove can penetrate the locking seat 40 in the width direction of the sand box body 1). When the locking block 33 moves toward the locking seat 40 and the locking tongue is received in the locking groove, the inner peripheral wall of the locking groove can restrict the outer peripheral wall of the locking tongue to restrict the locking tongue from rotating relative to the locking groove, thereby preventing the cover 50 from accidentally rotating relative to the sand box body 1 and causing the filling port to open.

[0053] In other embodiments, the first locking part is constructed as a locking groove. In this case, the locking block 33 is provided with a locking groove extending in the width direction of the sand box body 1 (the locking groove can penetrate the locking block 33 in the width direction of the sand box body 1). The locking seat 40 is provided with a locking tongue, which extends toward the locking groove in the width direction of the sand box body 1. When the locking block 33 moves toward the locking seat 40 and the locking tongue is received in the locking groove, the inner peripheral wall of the locking groove can restrict the outer peripheral wall of the locking tongue to restrict the locking tongue from rotating relative to the locking groove, thereby preventing the cover 50 from accidentally rotating relative to the sand box body 1 and causing the filling port to open.

[0054] According to some embodiments of this application, the connecting plate 31 is slidably connected to the output shaft, the mating rod 311 is provided with a mating hole, the connecting rod 32 is provided with a first connecting rod, the free end of the first connecting rod is rotatably mated with the mating hole, and the connecting plate 31 slides along the axial direction of the output shaft so that the first connecting rod can be selectively received in the mating hole.

[0055] According to some embodiments of this application, the connecting plate 31 can move along the axial direction of the output shaft to switch the transmission locking mechanism between an automatic drive state and a manual operation state; in the manual operation state, the first connecting rod disengages from the mating hole, and the first mating part and the second mating part are spaced apart from each other in the axial direction of the output shaft, so that the cover 50 can be manually opened or closed; in the free drive state, the first connecting rod is received in the mating hole.

[0056] In some embodiments, the outer peripheral wall of the output shaft is provided with a slide rail, the extension direction of which is parallel to the axial direction of the output shaft. The connecting plate 31 is provided with a mounting opening that extends through its own thickness direction. The connecting plate 31 is sleeved on the outer periphery of the output shaft through the mounting opening. The inner peripheral wall of the mounting opening is provided with a slide rail that extends radially. Part of the slide rail is slidably received in the slide groove. Thus, the connecting plate 31 can rotate with the rotation of the output shaft, and the connecting plate 31 can also slide along the axial direction of the output shaft.

[0057] Understandably, for example, when the power component 20 fails in the first state, the operator can control the connecting plate 31 to slide relative to the output shaft and disengage the first connecting rod from the mating hole, and make the first mating part and the second mating part spaced apart from each other in the axial direction of the output shaft, so as to switch the transmission locking mechanism to the manual operation state. At this time, the operator can pull the connecting rod 32 towards the power component 20 to disengage the locking tongue from the locking groove. Subsequently, the operator can directly rotate the cover 50 to open the filling port, thereby realizing the manual control of the container cover assembly.

[0058] Of course, when the sand filling is completed and the cover 50 needs to be closed, the operator can first control the cover 50 to rotate to close the filling port. Then, the operator controls the locking block 33 to move toward the locking seat 40 through the connecting rod 32 so that the locking tongue is received in the locking groove. Finally, the operator moves the connecting plate 31 so that the first connecting rod is received in the mating hole.

[0059] It is worth mentioning that when the transmission locking mechanism is working normally, the transmission locking mechanism is in a free drive state. At this time, the power component 20 can drive the cover to rotate and drive the first locking part to move and rotate.

[0060] According to some embodiments of this application, a limit block is provided at the free end of the output shaft, and a connecting plate 31 is slidably disposed between the limit block and the power member 20. A reset spring 21 is sleeved on the outer periphery of the output shaft, and the two ends of the reset spring 21 abut against the power member 20 and the connecting plate 31 respectively.

[0061] In some embodiments, the connecting plate 31 is slidably disposed between the power member 20 and the limiting block. The limiting block and the power member 20 can limit the sliding stroke of the connecting plate 31 to prevent the connecting plate 31 from disengaging from the output shaft.

[0062] The return spring 21 is sleeved on the output shaft and its two ends abut against the power component 20 and the connecting plate 31 respectively. The return spring 21 (with a certain preload) can drive the connecting plate 31 to move away from the power component 20 so that the free end of the first connecting rod can be stably received in the mating hole, thereby ensuring the stable mating of the first connecting rod and the mating rod 311.

[0063] Furthermore, when it is necessary for the first connecting rod to engage with the mating hole, the return spring 21 can push the connecting plate 31 to move so that the connecting plate 31 is reset to the automatic drive state (in the automatic drive state, the first connecting rod is housed in the mating hole).

[0064] According to some embodiments of this application, the two ends of the output shaft protrude from the power member 20, and the two ends of the output shaft are respectively provided with connecting plates 31. The cover 50 is provided with two connecting ears 51, which are rotatably connected to the mounting bracket 10. The two connecting ears 51 are respectively provided with second mating parts. The connecting rod 32 includes two second connecting rods 321 spaced apart from each other along the length direction of the sand box body 1. One end of the two second connecting rods 321 on the same side is rotatably connected to two mating rods 311, and the other end of the two second connecting rods 321 on the same side is rotatably connected to the locking block 33.

[0065] It is understood that the above-mentioned arrangement can make the structure of the container lid assembly of this application more symmetrical, and at the same time apply power to both sides of the locking block 33 to ensure that the movement of the locking block 33 is more stable. It can also apply power to both sides of the lid 50 to ensure that the lid 50 can rotate stably relative to the sand box body 1.

[0066] In some embodiments, a third connecting rod 322 is provided between the two second connecting rods 321. The two ends of the third connecting rod 322 are respectively connected to the two second connecting rods 321 to make the structure of the connecting rod 32 more stable, and at the same time, to further ensure the synchronicity of the movement of the two second connecting rods 321.

[0067] In other embodiments, the other ends of the two second connecting rods 321 on the same side are respectively connected to the two ends of the fourth connecting rod. The top of the locking block 33 is provided with a mating block, and the mating block is provided with a through hole that runs through the length of the sand box body 1. A portion of the fourth connecting rod is rotatably accommodated in the through hole.

[0068] In some other embodiments, the second connecting rod 321 may be a straight rod, a Z-shaped rod (which may be a Z-shaped rod in the vertical direction or a Z-shaped rod in the horizontal direction), an S-shaped rod, or an irregularly shaped rod, without limitation.

[0069] According to some embodiments of this application, the connecting plate 31 is provided with a first stop block 312 configured as a first mating part, and the cover 50 is provided with a second stop block 511 configured as a second mating part. The first stop block 312 can selectively stop against the second stop block 511 in the circumferential direction of the output shaft.

[0070] In some embodiments, a first stop block 312 is provided on the side of the connecting plate 31 facing the connecting ear 51, and a second stop block 511 is provided on the side of the connecting ear 51 facing the connecting plate 31. When the connecting plate 31 rotates relative to the connecting ear 51, the first stop block 312 and the second stop block 511 can stop each other in the circumferential direction of the output shaft, so that the rotation of the connecting plate 31 can drive the cover 50 to rotate.

[0071] In other embodiments, the connecting plate 31 is provided with a plurality of first stop blocks 312, and the connecting ear 51 is provided with a second stop block 511 corresponding to the plurality of first stop blocks 312. The number of first stop blocks 312 and second stop blocks 511 is not limited, as long as the first stop block 312 and the corresponding second stop block 511 stop in the circumferential direction when the bolt is completely disengaged from the bolt.

[0072] According to some embodiments of this application, a threaded hole 313 is provided on the first stop block 312 or the second stop block 511, and a stop rod is threadedly connected to the threaded hole 313. The free end of the stop rod is adapted to stop against the second stop block 511 or the first stop block 312 when the connecting rod 32 rotates toward the locking seat 40.

[0073] In some embodiments, the connecting plate 31 is provided with two first stop blocks 312, and the two stop blocks are respectively a first block and a second block. The connecting ear 51 is provided with two second stop blocks 511, and the two second stop blocks 511 are respectively a third block and a fourth block. The first block is disposed between one side of the third block and one side of the fourth block, and the second block is disposed between the other side of the third block and the other side of the fourth block. The third block is disposed close to the locking seat 40. When the container lid assembly is in the first state, the first block and the third block abut against each other.

[0074] In some feasible embodiments, the first block is provided with a threaded hole 313, and the outer peripheral wall of the stop rod is provided with threads (the stop rod can be a set screw or a screw, etc.). One end of the stop rod is threadedly engaged with the threaded hole 313, and the other end of the stop rod is adapted to stop against the third block. Thus, by rotating the stop rod, the protrusion size of the stop rod can be adjusted, thereby adjusting the coupling surface between the first block and the third block to eliminate manufacturing tolerances during the production of the parts.

[0075] Understandably, this application also includes a position sensor for detecting the position of the connecting plate 31. The position sensor can determine whether the cover 50 has closed the loading port by detecting the position of the connecting plate 31. Thus, by setting a stop bar to adjust the coupling surface between the first block and the third block, it can be ensured that the connecting plate 31 is in a preset position when the bolt is received in the lock groove (at this time, the container cover assembly is in the first state), so that the position sensor can detect that the cover 50 has closed the loading port.

[0076] According to some embodiments of this application, a detection element 314 is provided on the connecting plate 31, and a position sensor is provided on the mounting bracket 10 or the power component 20. The position sensor is adapted to detect the position of the detection element 314. Preferably, the detection element 314 can be a sensing screw.

[0077] It is understood that a detection element 314 is connected to the connecting plate 31. The detection element 314 can rotate with the connecting plate 31. When the locking tongue is received in the locking groove (at this time, the container lid assembly is in the first state), the detection element 314 is facing the position sensor (or the position sensor detects that the detection element 314 is in a preset position). At this time, the position sensor can determine that the lid 50 will close the filling port.

[0078] According to some embodiments of this application, a connecting seat 52 is provided on the cover 50, and the connecting seat 52 is provided with a sliding groove extending from the side of the cover 50 near the power member 20 to the side away from the power member 20, and a portion of the locking block 33 is slidably disposed in the sliding groove.

[0079] Understandably, the inner peripheral wall of the slide can restrict part of the outer peripheral wall of the locking block 33, so that the locking block 33 can move stably along the extension direction of the slide, thereby ensuring that the movement of the locking block 33 can stably accommodate the bolt in the lock groove or stably disengage the bolt from the lock groove.

[0080] In some embodiments, the power component 20 is configured as a rotating motor. This application is also equipped with a controller connected to the rotating motor. The controller is used to monitor the current of the rotating motor, and at the same time, the controller is also used to control the rotation speed of the rotating motor and the on / off state of the current.

[0081] Therefore, when foreign object interference causes the cover 50 to fail to close properly and the cover 50 is open to a large degree, the locking block 33 will be pushed to its limit position first. If the foreign object is a rigid object, the current of the rotating motor will increase sharply due to the obstruction caused by the foreign object. The controller will cut off the circuit after detecting that the current of the rotating motor is greater than the preset value to avoid damage to the rotating motor, and at the same time issue a fault information prompt. If the foreign object is a loose or elastic object, after the locking block 33 is pushed to its limit, the rotating motor will continue to press the cover 50 and the locking block 33 (lock tongue) to continue rotating. At this time, the locking block 33 (lock tongue) will be interfered with by the locking seat 40 (the lock tongue is located at the top of the locking seat 40) to prevent the locking block 33 (lock tongue) from continuing to move, which will cause the current of the rotating motor to increase sharply. The controller will cut off the circuit after detecting that the current of the rotating motor is greater than the preset value to avoid damage to the rotating motor, and at the same time issue a fault information prompt.

[0082] Of course, when foreign object interference causes the cover 50 to fail to close tightly and the opening of the cover 50 is small, the locking block 33 (lock tongue) will be pushed to stop against the side of the locking seat 40 facing the rotating motor. Since the locking seat 40 is rigidly fixed to the sand box body 1, the locking seat 40 will prevent the locking block 33 (lock tongue) from continuing to move, thereby causing the current of the rotating motor to increase sharply. After the controller detects that the current of the rotating motor is greater than the preset value, it will cut off the circuit to avoid damage to the rotating motor and issue a fault information prompt.

[0083] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0084] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A container lid assembly, characterized in that, include: Mounting bracket (10), which is adapted to be connected to the sand box body (1); A power component (20) is connected to a mounting bracket (10) and has a rotatable output shaft; A transmission locking mechanism is connected to an output shaft and has a first locking part that can rotate and move relative to the output shaft. The first locking part can move between a locked position and an unlocked position. The transmission locking mechanism is also provided with a first mating part. Locking seat (40), the locking seat (40) is adapted to be connected to the sand box body (1) and / or the mounting bracket (10) and is spaced apart from the transmission locking mechanism, the locking seat (40) may optionally cooperate with the first locking part to restrict the opening of the cover (50); The cover (50) is rotatably connected to the mounting bracket (10) and is provided with a second mating part. The first mating part and the second mating part can be selectively stopped on the movement path.

2. The container lid assembly according to claim 1, characterized in that, The transmission locking mechanism is configured such that: when the output shaft rotates in the first direction, the first locking part is first driven to move from the locked position to the unlocked position, and then the cover (50) is opened by the stop of the first mating part and the second mating part; when the output shaft rotates in the second direction, the cover (50) is first driven to close, and then the first locking part is driven to move to the locked position; wherein, in the locked position, the first locking part cooperates with the locking seat (40) and restricts the opening of the cover (50); in the unlocked position, the first locking part disengages from the locking seat (40), and the cover (50) can rotate relative to the mounting bracket (10).

3. The container lid assembly according to claim 1, characterized in that, The transmission locking mechanism includes a connecting plate (31), on which a first mating part is provided, and on the outer peripheral wall of the connecting plate (31) a mating rod (311) extending radially is provided. The free end of the mating rod (311) is rotatably connected to a connecting rod (32), and the free end of the connecting rod (32) is rotatably connected to a locking block (33). The locking block (33) is movably connected to the cover (50) and is provided with a first locking part.

4. The container lid assembly according to claim 3, characterized in that, The locking seat (40) is provided with a second locking part, one of the first locking part and the second locking part is a locking tongue, and the other of the first locking part and the second locking part is a locking groove.

5. The container lid assembly according to claim 3, characterized in that, The connecting plate (31) is slidably connected to the output shaft. The mating rod (311) is provided with a mating hole. The connecting rod (32) is provided with a first connecting rod. The free end of the first connecting rod is rotatably mated with the mating hole. The connecting plate (31) slides along the axial direction of the output shaft so that the first connecting rod can be selectively received in the mating hole.

6. The container lid assembly according to claim 5, characterized in that, The connecting plate (31) can move along the axial direction of the output shaft to switch the transmission locking mechanism between automatic drive state and manual operation state; in the manual operation state, the first connecting rod disengages from the mating hole, and the first mating part and the second mating part are spaced apart from each other in the axial direction of the output shaft, so that the cover (50) can be manually opened or closed; in the free drive state, the first connecting rod is received in the mating hole.

7. The container lid assembly according to claim 5, characterized in that, The free end of the output shaft is provided with a limit block, and the connecting plate (31) is slidably disposed between the limit block and the power component (20). The outer periphery of the output shaft is fitted with a reset spring (21), and the two ends of the reset spring (21) are respectively abutted against the power component (20) and the connecting plate (31).

8. The container lid assembly according to claim 3, characterized in that, The two ends of the output shaft protrude from the power component (20), and the two ends of the output shaft are respectively provided with connecting plates (31). The cover (50) is provided with two connecting ears (51). The two connecting ears (51) are rotatably connected to the mounting bracket (10), and the two connecting ears (51) are respectively provided with second mating parts. The connecting rod (32) includes two second connecting rods (321) spaced apart from each other. One end of the two second connecting rods (321) on the same side is rotatably connected to two mating rods (311), and the other end of the two second connecting rods (321) on the same side is rotatably connected to the locking block (33).

9. The container lid assembly according to claim 3, characterized in that, The connecting plate (31) is provided with a first stop block (312) configured as a first mating part, and the cover (50) is provided with a second stop block (511) configured as a second mating part. The first stop block (312) can selectively stop against the second stop block (511) in the circumferential direction of the output shaft.

10. The container lid assembly according to claim 9, characterized in that, The first stop block (312) or the second stop block (511) is provided with a threaded hole (313), and the threaded hole (313) is threadedly connected to a stop rod. The free end of the stop rod is adapted to stop against the second stop block (511) or the first stop block (312) when the connecting rod (32) rotates toward the locking seat (40).

11. The container lid assembly according to claim 3, characterized in that, The cover (50) is provided with a connecting seat (52), and the connecting seat (52) is provided with a sliding groove extending from the side of the cover (50) near the power member (20) to the side away from the power member (20). A portion of the locking block (33) is slidably disposed in the sliding groove.

12. The container lid assembly according to claim 3, characterized in that, The connecting plate (31) is provided with a detection element (314), which moves with the transmission locking mechanism. The mounting bracket (10) or the power component (20) is provided with a position sensor, which is suitable for detecting the position of the detection element (314).

Images