Manhole cover with filling opening

Abstract

The invention relates to the technical field of manhole covers, in particular to a manhole cover with a filling port, which comprises a manhole cover body, the manhole cover body is provided with the filling port, the filling port is movably connected with a filling cover, the filling cover is provided with a handle, the side wall of the filling cover is provided with a matching groove, and the manhole cover body is provided with a fastener matched with the matching groove. A handle is arranged on the filling cover, a through opening is formed in the middle of the handle, a rotary annular buckling arm hinged to the manhole cover body is arranged on one side of the handle, a through hole is formed in the end of the rotary annular buckling arm, a vertical hole is formed in the manhole cover body, and the through hole is communicated with the vertical hole. A penetrating rod matched with the penetrating hole is arranged in the vertical hole, a moving plate is arranged in the manhole cover body, and the moving plate moves to drive the penetrating rod to move upwards to penetrate into the penetrating hole through cooperation of the inclined strip plate and the inclined sliding groove, so that the rotary annular buckle arm is matched and locked with the vertical hole, and meanwhile the safety performance of workers is improved.

Description

Technical Field

[0001] This invention relates to the field of manhole cover technology, and more particularly to a manhole cover with a filling port. Background Technology

[0002] Mobile pressure vessels typically have two connection ports on the cylinder: a manhole and a filling port.

[0003] For example, on March 1, 2017, a document with publication number CN2644368Y was disclosed, entitled "Manhole Cover with At Least Two Built-in Breathing Valves on Filling Cap." The document includes a manhole cover plate with a filling port. The filling port is fitted with a filling cap with emergency ventilation function. Below the filling cap are at least two built-in breathing valves that integrate breathing, tilting, overflow prevention, and flame arrestor functions. Above the filling cap with the breathing valves are an upper pressure plate and a lower pressure plate. One end of the upper and lower pressure plates is hinged to the manhole cover plate. The filling cap and the lower pressure plate are connected by bolts 7 and supported by springs. The upper and lower pressure plates are locked together. However, during manual opening of the filling cap, when the operator opens the locking device of the upper and lower pressure plates, the spring force between the lower pressure plate and the filling cap causes the lower and upper pressure plates to rapidly flip upwards, potentially causing injury to the operator. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a manhole cover with a filling port to solve the problem of easy injury to workers.

[0005] To achieve the above objectives, the present invention provides a manhole cover with a filling port, comprising a manhole cover body, a filling port eccentrically located on the manhole cover body, a filling cover movably connected to the filling port, a handle on the filling cover, a mating groove on the side wall of the filling cover, and a fastener on the manhole cover body that mates with the mating groove. The filling cover is fixedly locked by the engagement of the fastener and the mating groove. The handle has a through opening in its center, and a rotating annular latch arm hinged to the manhole cover body is located on one side of the handle. The rotating annular buckle arm has a through hole at its end, and the manhole cover body has a vertical hole. A through rod that mates with the through hole is installed in the vertical hole. A movable plate is installed inside the manhole cover body. A movable component is connected to one end of the movable plate. An inclined strip is installed on the side wall of the movable plate. An inclined groove that mates with the inclined strip is installed on the through rod. The movable component is used to control the horizontal left and right movement of the movable plate. Through the cooperation of the inclined strip and the inclined groove, the through rod is driven to move upward to enter or downward to exit the through hole, so that the rotating annular buckle arm locks or loosens in conjunction with the vertical hole.

[0006] Optionally, the filling cap is provided with rotating shafts on both sides, which are rotatably mounted on the manhole cover body. Each rotating shaft is connected to a rotating pressure plate, and the lower end face of the rotating pressure plate away from the rotating shaft is provided with a protrusion for pressing the filling cap.

[0007] Optionally, the upper surface of the filling cap is provided with a fixed limiting block that cooperates with one side of the protruding head, and a movable limiting block that cooperates with the other side of the protruding head is slidably provided on the filling cap. The filling cap is provided with a slide rail for the movable limiting block to slide. The protruding head cooperates with the fixed limiting block, the rotating pressure plate is arranged parallel to the slide rail, the movable limiting block cooperates with the protruding head, the movable limiting block is provided with a screw, and the slide rail is provided with multiple screw holes that cooperate with the screw to lock the rotating pressure plate.

[0008] Optionally, the slide rail is provided with two movement limiting blocks that are respectively engaged with two protrusions. The filling cover is provided with a control component, which includes a control motor. The output end of the control motor is connected to a rotating shaft. Two threaded sections with opposite thread directions are respectively provided on both sides of the rotating shaft. The two threaded sections are respectively sleeved with the two movement limiting blocks.

[0009] Optionally, the fastener includes a fastening shaft disposed on the manhole cover body, a fastening cam disposed on the fastening shaft, the protrusion of the fastening cam engaging with the mating groove, and a driving component disposed on the fastening shaft, the driving component controlling the rotation of the fastening shaft so that the protrusion of the fastening cam screws into the mating groove, thereby achieving the fixed locking of the filling cover.

[0010] Optionally, the lower end face of the filling cap is provided with a cap ring, the manhole cap body is provided with an annular groove that cooperates with the cap ring, and the cap ring is provided with a sealing ring.

[0011] The beneficial effects of this invention are as follows: This invention provides a manhole cover with a filling port. When the filling cover is rotated to cover the filling port, it can be locked by the cooperation of fasteners and mating grooves, ensuring reliable sealing during filling. In addition, at this time, the vertical hole is located in the handle opening, and the moving part is used to control the moving plate to move horizontally to the left. The cooperation of the inclined strip and the inclined slide groove drives the through rod to move upward and pass into the through hole, so that the rotating ring buckle arm cooperates with the vertical hole to lock, thereby realizing the fixed locking of the filling cover. During this process, the filling cover will not suddenly lift up. While realizing the fixed locking of the filling cover, it improves the safety performance of the staff and facilitates the safe opening of the filling cover by the staff later. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the rotating annular buckle arm and the through rod of the present invention; Figure 3 This is a schematic diagram of the structure of the movable plate and the inclined plate of the present invention.

[0014] In the diagram: 1. Manhole cover body; 2. Filling port; 3. Filling cover; 4. Cover ring; 5. Fastener; 6. Fastening shaft; 7. Fastening cam; 8. Mating groove; 9. Handle; 10. Rotating ring arm; 11. Perforation; 12. Moving plate; 13. Sloping strip; 14. Sloping slide groove; 15. Through rod; 16. Rotating shaft; 17. Rotating pressure plate; 18. Protrusion; 19. Fixed limiting block; 20. Moving limiting block; 21. Slide rail. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0016] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this invention should have the ordinary meaning understood by those skilled in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0017] like Figures 1 to 3As shown, a manhole cover with a filling port includes a manhole cover body 1, a filling port 2 eccentrically located on the manhole cover body 1, a filling cover 3 movably connected to the filling port 2, a handle 9 on the filling cover 3, a mating groove 8 on the side wall of the filling cover 3, and a fastener 5 on the manhole cover body 1 that mates with the mating groove 8. The fastener 5 and the mating groove 8 work together to securely lock the filling cover 3, ensuring a reliable seal during filling. The handle 9 has a through opening in its center, and a rotating annular latch 10 hinged to the manhole cover body 1 on one side of the handle 9. The end of the buckle arm 10 is provided with a through hole 11. The manhole cover body 1 is provided with a vertical hole. A through rod 15 that cooperates with the through hole 11 is provided in the vertical hole. A movable plate 12 is provided inside the manhole cover body 1. A movable component is connected to one end of the movable plate 12. An inclined strip 13 is provided on the side wall of the movable plate 12. An inclined groove 14 that cooperates with the inclined strip 13 is provided on the through rod 15. The movable component is used to control the horizontal left and right movement of the movable plate 12. Through the cooperation of the inclined strip 13 and the inclined groove 14, the through rod 15 is driven to move upward to enter or downward to move out of the through hole 11, so that the rotating annular buckle arm 10 is locked or loosened in cooperation with the vertical hole.

[0018] The filling cap 3 is rotated to cover the filling port 2. When it is necessary to lock the filling cap 3, the filling cap 3 can be fixed and locked by the cooperation of the fastener 5 and the mating groove 8, ensuring reliable sealing during the filling process. In addition, at this time, the vertical hole is located in the through hole of the handle 9. The moving part is used to control the moving plate 12 to move horizontally to the left. The cooperation of the inclined strip 13 and the inclined slide groove 14 drives the through rod 15 to move upward and pass into the through hole 11, so that the rotating ring buckle arm 10 cooperates with the vertical hole to lock, thereby realizing the fixed locking of the filling cap 3. During this process, the filling cap 3 will not suddenly lift up. While realizing the fixed locking of the filling cap 3, the safety performance of the staff is improved, and it is convenient for the staff to safely open the filling cap 3 later.

[0019] The movable component can move the cylinder. The movable cylinder can be driven by electric, pneumatic or hydraulic means. The extension and retraction of the movable cylinder is used to control the horizontal left and right movement of the movable plate 12.

[0020] The filling cover 3 is provided with rotating shafts 16 on both sides of the manhole cover body 1. Each rotating shaft 16 is connected to a rotating pressure plate 17. The lower end face of the rotating pressure plate 17 away from the rotating shaft 16 is provided with a protrusion 18 for pressing the filling cover 3. Rotating the rotating pressure plate 17 to the upper end face of the filling cover 3 can further press the filling cover 3, reducing the risk of the filling cover 3 being opened.

[0021] The upper surface of the filling cap 3 is provided with a fixed limiting block 19 that cooperates with one side of the protrusion 18. The filling cap 3 is slidably provided with a movable limiting block 20 that cooperates with the other side of the protrusion 18. The filling cap 3 is provided with a slide rail 21 for sliding the movable limiting block 20. The protrusion 18 and the fixed limiting block 19 are cooperated with each other. The rotating pressure plate 17 is arranged parallel to the slide rail 21. The movable limiting block 20 cooperates with the protrusion 18. The movable limiting block 20 is provided with a screw. The slide rail 21 is provided with multiple screw holes that cooperate with the screw to lock the rotating pressure plate 17. Rotating the rotating pressure plate 17 to the upper surface of the filling cap 3 can further press the filling cap 3, reducing the risk of the filling cap 3 being opened.

[0022] The slide rail 21 is equipped with two movable limiting blocks 20 that are respectively engaged with two protrusions 18. The filling cover 3 is equipped with a control component, which includes a control motor. The output end of the control motor is connected to a rotating shaft. Two threaded sections with opposite thread directions are respectively provided on both sides of the rotating shaft. The two threaded sections are respectively sleeved with the two movable limiting blocks 20. When the two rotating pressure plates 17 rotate to the upper end of the filling cover 3 and both protrusions 18 are engaged with the fixed limiting block 19, the two movable limiting blocks 20 are controlled to move in opposite directions by the control component until the movable limiting blocks 20 are engaged with one side of the protrusions 18. This restricts the rotation of the rotating pressure plates 17 and reduces the risk of the filling cover 3 being accidentally opened.

[0023] The fastener 5 includes a fastening shaft 6 disposed on the manhole cover body 1. A fastening cam 7 is disposed on the fastening shaft 6. The protrusion of the fastening cam 7 is engaged with the mating groove 8. A driving component is disposed on the fastening shaft 6. The driving component controls the rotation of the fastening shaft 6, so that the protrusion of the fastening cam 7 is screwed into the mating groove 8, thereby fixing and locking the filling cover 3. The driving component can be a fastening motor disposed on the manhole cover body 1.

[0024] The lower end face of the filling cap 3 is provided with a cap ring 4, and the manhole cap body 1 is provided with an annular groove that cooperates with the cap ring 4. The cap ring 4 is provided with a sealing ring, which facilitates the improvement of the sealing performance at the filling port 2 and reduces the possibility of medium leakage.

[0025] The filling cap 3 is installed on the manhole cover body 1 by fasteners 5, combining the manhole and filling hole into one, reducing the number of openings on the container, while also ensuring the container's usage requirements.

[0026] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples. The invention is not limited to the above-described embodiments, that is, it does not mean that the invention must rely on the above methods and structures to be implemented. Under the concept of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0027] The embodiments of this invention are intended to cover all such substitutions, modifications, and variations falling within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A manhole cover with a filling port, comprising a manhole cover body, wherein a filling port is provided at an eccentric position on the manhole cover body, and a filling cover is movably connected to the filling port, characterized in that, The filling cap is provided with a handle, and a mating groove is provided on the side wall of the filling cap. The manhole cover body is provided with a fastener that mates with the mating groove. The filling cap is fixed and locked by the mating groove and the fastener. The handle has an opening in the middle. A rotating annular buckle arm is provided on one side of the handle and is hinged to the manhole cover body. A through hole is provided at the end of the rotating annular buckle arm. A vertical hole is provided on the manhole cover body. A through rod is provided in the vertical hole and mates with the through hole. A movable plate is provided inside the manhole cover body. A movable component is connected to one end of the movable plate. An inclined strip is provided on the side wall of the movable plate. An inclined sliding groove is provided on the through rod and mates with the inclined strip. The movable component is used to control the horizontal left and right movement of the movable plate. Through the cooperation of the inclined strip and the inclined sliding groove, the through rod is driven to move upward and enter or move downward and exit the through hole, so that the rotating annular buckle arm is locked or released by the vertical hole.

2. A manhole cover with a filling port according to claim 1, characterized in that, The filling cap has rotating shafts on both sides that are rotatably mounted on the manhole cover body. Each rotating shaft is connected to a rotating pressure plate. The lower end face of the rotating pressure plate away from the rotating shaft has a protrusion for pressing the filling cap.

3. A manhole cover with a filling port according to claim 2, characterized in that, The upper surface of the filling cap is provided with a fixed limiting block that cooperates with one side of the protruding head. A movable limiting block that cooperates with the other side of the protruding head is slidably disposed on the filling cap. The filling cap is provided with a slide rail for the movable limiting block to slide. The protruding head cooperates with the fixed limiting block. The rotating pressure plate is disposed parallel to the slide rail. The movable limiting block cooperates with the protruding head. The movable limiting block is provided with a screw. The slide rail is provided with multiple screw holes that cooperate with the screw to lock the rotating pressure plate.

4. A manhole cover with a filling port according to claim 3, characterized in that, The slide rail is provided with two movement limiting blocks that are respectively engaged with two protrusions. The filling cover is provided with a control component, which includes a control motor. The output end of the control motor is connected to a rotating shaft. Two threaded sections with opposite thread directions are respectively provided on both sides of the rotating shaft. The two threaded sections are respectively sleeved with the two movement limiting blocks.

5. A manhole cover with a filling port according to claim 1, characterized in that, The fastener includes a fastening shaft mounted on the manhole cover body, a fastening cam mounted on the fastening shaft, a protrusion of the fastening cam engaging with the mating groove, and a driving component mounted on the fastening shaft to control the rotation of the fastening shaft, causing the protrusion of the fastening cam to screw into the mating groove, thereby fixing and locking the filling cover.

6. A manhole cover with a filling port according to claim 1, characterized in that, The lower end face of the filling cap is provided with a cap ring, the manhole cap body is provided with an annular groove that cooperates with the cap ring, and a sealing ring is provided on the cap ring.

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