Side sealing well lid and opening tool thereof

Abstract

The utility model discloses a side sealing well lid and an opening tool thereof, and relates to the technical field of road administration well lids. An operation hole is formed in the cover body; a circle of receding groove is formed between the side wall of the cover body and the inner wall of the well seat, and a circle of sealing ring is arranged in the receding groove. The opening tool comprises a lifting rod and a crow plate; a skid is arranged at the lower end of the lifting rod; a supporting block is arranged at the lower end of the middle of the crow plate, a clamping block is movably arranged at the bottom of the supporting block, and a driving mechanism is arranged on the crow plate. The sealing effect of the well lid is enhanced through the sealing ring, the crow plate can form a lever, the side, close to an opening tool, of the lid body can be lifted through the crow block by stepping down one end of the crow plate, and a line gap is formed between the lifted end of the lid body and the well base. And then the clamping block slides into the gap through the driving mechanism, so that the cover body can be kept in a tilting state when the feet of the operator loosen the crow plate, and the operator can conveniently lift or transfer the cover body through the lifting rod in a more labor-saving posture.

Description

Technical Field

[0001] The present application relates to the technical field of road manhole covers, and in particular to a side-sealed manhole cover and an opening tool thereof. Background Art

[0002] Manhole covers are the top closures of deep wells on roads or in homes, used to prevent people or objects from falling and as entrances and exits to underground facilities. Manhole covers are an important part of infrastructure, and they are required wherever public facilities such as tap water, telecommunications, electricity, gas, heat, fire protection, and sanitation are installed. With the development of the economy, the upgrading of infrastructure construction has also driven the development of manhole cover technology.

[0003] The existing manhole cover usually includes a manhole seat and a cover body, wherein the manhole seat is fixed to the ground or a supporting structure, and the cover body is movably covered at the wellhead on the manhole seat. When the cover body is to be opened, a T-shaped handle is usually used to hook the operating hole on the cover body, and then the cover body is directly lifted manually to open the cover body.

[0004] However, the manhole covers used in gas stations are usually heavy because they must have a strong load-bearing capacity. Gas stations not only serve small private cars, but also large trucks. In order to ensure safety and prevent the manhole covers from collapsing under heavy pressure, the manhole covers of gas stations are usually designed to be thicker and stronger. This design ensures that even when heavy vehicles frequently pass by, the manhole covers can stably withstand pressure, thus avoiding accidents.

[0005] The heavy manhole cover makes it difficult for the staff to open it easily, especially the manhole cover with a sealing structure. The friction resistance between the edge of the cover and the well seat is relatively large. It is difficult for an ordinary adult male to directly open the cover with the above-mentioned handle, which is very inconvenient. Utility Model Content

[0006] In order to solve the problem that the manhole cover is inconvenient to open due to the deadweight of the cover body and the sealing structure, the present application provides a side-sealed manhole cover and an opening tool thereof.

[0007] The side sealing manhole cover and its opening tool provided in this application adopt the following technical solutions:

[0008] A side-sealed manhole cover comprises a manhole seat and a cover body; an operating hole is arranged on the cover body, and the operating hole is in an elongated strip shape; a cylindrical operating cavity is arranged on the cover body inside the operating hole, and the diameter of the operating cavity is greater than the length of the operating hole; a circle of annular makeshift grooves are arranged between the side wall of the cover body and the inner wall of the manhole seat, and a circle of flexible sealing rings are arranged in the makeshift grooves, and the thickness of the sealing rings is greater than the width of the makeshift grooves; the sealing rings are fixedly connected to the side wall of the cover body, or the sealing rings are fixedly connected to the inner wall of the manhole seat; the outer cross-section of the sealing surface of the sealing ring is in the shape of a vertically extending tooth.

[0009] By adopting the above technical solution, the sealing effect of the manhole cover is enhanced by using a sealing ring to prevent rainwater or other foreign matter from entering the manhole cover; and the setting of the clearance groove and the tooth-shaped sealing surface increases the elastic space, making the cover body easier to be opened from the well seat.

[0010] An opening tool for the above-mentioned side-sealed manhole cover comprises a lifting rod and a prying plate; the front end of the prying plate is hinged to the lower end of the lifting rod; the lower end of the lifting rod is provided with an extension column, and the bottom of the extension column is provided with a prying block that cooperates with the operating hole; the middle lower end of the prying plate is provided with a supporting block, and when the prying block enters the operating hole and is locked, the prying plate can be lowered to enable the supporting block to abut against the manhole seat; a clamping block is movably provided at the bottom of the supporting block, and a driving mechanism for driving the clamping block to slide toward the manhole cover and enter the gap between the cover body and the manhole seat is provided on the prying plate.

[0011] By adopting the above technical solution, when using the opening tool to open the manhole cover, first insert the pry block at the end of the lifting rod into the operating hole and rotate to complete the locking, then lower the pry plate to make the support block abut against the manhole seat, and the end of the pry plate away from the manhole cover will be tilted to form a lever, at this time, by stepping on this end, the side of the cover body close to the opening tool can be lifted by the pry block, and a gap will appear between the lifted end of the cover body and the manhole seat; then the blocking block is slid into the gap by the driving mechanism, so that the operator's foot can release the pry plate and the cover body can keep the tilted state, which is convenient for the operator to lift or transfer the cover body through the lifting rod in a more labor-saving posture.

[0012] Optionally, the card block is slidably disposed in the support block toward the pry block; and an opening for the front end of the card block to slide out is disposed on a side of the support block facing the pry block.

[0013] By adopting the above technical solution, the card block can be hidden in the support block at normal times.

[0014] Optionally, the driving mechanism includes a linkage assembly and a pedal; the pedal is movably arranged at one end of the pry plate away from the pry block, and the support block is located between the pry block and the pedal; one end of the linkage assembly is connected to the clamping block, and the other end is connected to the pedal.

[0015] By adopting the above technical solution, when the operator steps on the pedal at the end of the pry plate to lift the cover body, the clamping block can be extended to clamp the cover body by simply moving the foot that steps on the pedal, which is convenient for operation.

[0016] Optionally, the pedal is slidably arranged on the pry plate along the length direction of the pry plate; the linkage assembly includes an L-shaped push plate, the vertical section of the push plate is fixedly connected to the block, the horizontal section is slidably connected to the pry plate, and the end of the horizontal section of the push plate is fixedly connected to the bottom of the pedal.

[0017] By adopting the above technical solution, the operator can quickly drive the block to achieve sliding operation while ensuring that the pedal is in a stepped state.

[0018] Optionally, a return spring is provided on the pry plate, one end of the return spring is connected to the end of the pry plate away from the pry block, and the other end is connected below the front end of the pedal.

[0019] By adopting the above technical solution, the pedal can be automatically reset by using a reset spring after being pushed forward, so that the card block is automatically retracted to the inside of the support block, and as long as the reset force of the reset spring on the card block is set to be smaller than the resistance of the cover body pressing the card block by its own gravity, the card block can be kept stuck to the cover body to make it tilted.

[0020] Optionally, a limit baffle protruding upward is provided at the front end of the pedal.

[0021] By adopting the above technical solution, the limit baffle is used to limit the front end of the operator's foot stepping on the pedal, which makes it easier for the foot to accurately step on the correct position on the pedal and helps the foot to push the pedal forward.

[0022] Optionally, both upper and lower end surfaces of the block are provided with anti-slip rubber layers.

[0023] By adopting the above technical solution, random displacement of the block relative to the cover body and the well seat can be avoided.

[0024] Optionally, guard plates are provided on both sides of the end surface of the pry plate facing the lifting rod, and when the lifting rod is rotated to fit with the pry plate, the lifting rod is located between the guard plates on both sides;

[0025] By adopting the above technical solution, when the opening tool is not in use, the lifting rod and the pry plate can be rotated and closed, which is convenient for hand-held carrying, and the lifting rod after closing can be limited and protected by the guard plates on both sides.

[0026] Optionally, a circular retaining spring is arranged at the upper end of the pry plate between the two side guard plates, the retaining opening of the circular retaining spring faces one side of the lifting rod, and the retaining opening width is smaller than the diameter of the lifting rod.

[0027] By adopting the above technical solution, the lifting rod is fixed on the pry plate by means of a circular retaining spring for limiting the position, and it is also effortless to open the lifting rod, thereby further increasing the convenience of storage and carrying.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. The sealing ring is used to enhance the sealing effect of the manhole cover to prevent rainwater or other foreign matter from entering the manhole cover; and the setting of the clearance groove and the tooth-shaped sealing surface increases the elastic space, making the cover easier to be opened from the well seat;

[0030] 2. Use the pry plate to form a lever. Step down one end of the pry plate to lift the side of the cover body close to the opening tool through the pry block, and a gap will appear between the lifted end of the cover body and the well seat; then slide the block into the gap through the driving mechanism, so that the operator's foot can release the pry plate and the cover body can remain in the tilted state, which is convenient for the operator to lift or transfer the cover body through the lifting rod in a more labor-saving posture. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the side sealing manhole cover and the opening tool in this application.

[0032] Figure 2 It is a partial cross-sectional schematic diagram of the side sealing manhole cover in the embodiment of the present application.

[0033] Figure 3 It is a structural schematic diagram of the clamping block and the driving mechanism in the embodiment of the present application.

[0034] Figure 4 It is a partial cross-sectional schematic diagram of the side sealing manhole cover and the opening tool in the embodiment of the present application.

[0035] Figure 5 yes Figure 1 A is an enlarged schematic diagram.

[0036] Description of reference numerals:

[0037] 1. Well seat; 11. Give way groove; 2. Cover body; 21. Sealing ring; 22. Operating hole; 23. Operating cavity; 3. Lifting rod; 31. Handle; 32. Extension column; 33. Pry block; 4. Pry plate; 41. Support block; 411. Opening; 42. Guard plate; 43. Circular retaining spring; 5. Block; 6. Driving mechanism; 61. Push plate; 611. Vertical section; 612. Horizontal section; 62. Pedal; 621. Limit baffle; 7. Reset spring. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-5 This application is described in further detail.

[0039] The present application embodiment discloses a side sealing manhole cover. Figure 1 The side sealing manhole cover includes a circular manhole seat 1 and a cover body 2. The manhole seat 1 is pre-buried in the ground for fixation, and the cover body 2 is placed flat at the wellhead of the manhole seat 1 to achieve a stable covering effect through its own weight.

[0040] Reference Figure 1 , Figure 2When the cover body 2 is closed on the well seat 1, a circle of annular make way groove 11 is left between the side wall of the cover body 2 and the inner wall of the well seat 1, and a circle of rubber sealing ring 21 is arranged in the make way groove 11. The sealing ring 21 can be fixed around the side wall of the cover body 2, and can also be fixed on the inner wall of the well head of the well seat 1. In this embodiment, the sealing ring 21 is fixed around the cover body 2; the outer cross-section of the sealing surface of the sealing ring 21 facing outward is in the shape of a vertically extending tooth, and the thickness of the sealing ring 21 is greater than the width of the make way groove 11, so that when the cover body 2 is closed on the well seat 1, the sealing ring 21 is squeezed and deformed by force, and filled in the make way groove 11, so as to achieve a sealing effect and prevent rainwater or other foreign matter from entering the well cover.

[0041] Reference Figure 2 Two operating holes 22 are symmetrically arranged on the cover body 2. The operating hole 22 is long and points to the center of the cover body 2. A cylindrical operating cavity 23 is formed on the cover body 2 inside the operating hole 22. The diameter of the operating cavity 23 is greater than the length of the operating hole 22.

[0042] The present application also discloses an opening tool for the above-mentioned side sealing manhole cover. Figure 1 , Figure 2 The opening tool includes a lifting rod 3 and a prying plate 4. The upper end of the lifting rod 3 is fixedly connected with a handle 31 for easy lifting and gripping, and the lower end is welded with an extension column 32. A prying block 33 is welded at the bottom of the extension column 32. The prying block 33 extends toward both sides along the radial direction of the extension column 32, and the width between the two ends of the prying block 33 is less than the length of the operating hole 22 and greater than the width of the operating hole 22. When the prying block 33 enters the long strip operating hole 22 on the manhole cover along the extension column 32, the lifting rod 3 is rotated so that the extension column 32 drives the prying block 33 to rotate 90 degrees in the operating cavity 23, and the prying block 33 can be limited in the operating hole 22. The lifting rod 3 is lifted upward to apply an upward pulling force to the cover body 2, thereby lifting the cover body 2 to open the manhole cover.

[0043] Reference Figure 1 , Figure 2 The front end of the pry plate 4 is hinged to the lower end of the lifting rod 3, and the hinge position is close to the top of the extension column 32; the extension lines of the handle 31, the extension column 32 and the pry plate 4 are located in the same plane. The middle lower end of the pry plate 4 is fixedly connected to the support block 41, and the end of the pry plate 4 away from the hinge of the lifting rod 3 is provided with a pedal 62. When the pry block 33 enters the operating hole 22 and is limited, the pry plate 4 is lowered to make the support block 41 abut against the upper end of the well seat 1. At this time, the opening tool forms a lever with the support block 41 as the fulcrum. By stepping on this end of the pedal 62, the manhole cover body 2 can be pried up through the pry block 33, which is labor-saving and convenient.

[0044] Reference Figure 3 , Figure 4The support block 41 is hollow inside and has an opening 411 on one side facing the pry block 33. A card block 5 is slidably connected to the bottom of the inner side of the support block 41 through a guide structure. The card block 5 is usually hidden in the support block 41 and can slide one end to the outside of the support block 41 in the direction of the opening 411.

[0045] The interior of the pry plate 4 is also hollow, and the inner cavity of the support block 41 is upwardly connected to the pry plate 4. A push plate 61 is arranged in the inner cavity of the pry plate 4. The push plate 61 is L-shaped. The vertical section 611 of the push plate 61 goes downward into the support block 41 and is fixedly connected to the end of the clamping block 5 away from the opening 411. The horizontal section 612 of the push plate 61 is slidably connected to the pry plate 4 along the length direction of the pry plate 4; the end of the horizontal section 612 of the push plate 61 is fixedly connected to the bottom of the pedal 62, and the pedal 62 is also slidably connected to the top of the pry plate 4 along the length direction of the pry plate 4. The push plate 61 and the pedal 62 together constitute a driving mechanism 6 for driving the clamping block 5 to move. When the operator steps on the pedal 62 at the end of the pry plate 4 to lift the cover body 2, the clamping block 5 can be extended and enter the gap between the cover body 2 and the well seat 1 by moving the foot that steps on the pedal 62, thereby clamping the cover body 2.

[0046] Reference Figure 1 , Figure 3 A limit baffle 621 that protrudes upward in an arc shape is welded at the front end of the pedal 62. The limit baffle 621 is used to limit the front end of the operator's foot stepping on the pedal 62, so that the operator's foot can accurately step on the correct position on the pedal 62 and help the foot push the pedal 62 forward.

[0047] A reset spring 7 is also provided in the inner cavity of the pry plate 4, one end of the reset spring 7 is connected to the end of the pry plate 4 away from the pry block 33, and the other end is connected to the lower front end of the pedal 62. The reset spring 7 is used to automatically reset the pedal 62 after being pushed forward, so that the clamping block 5 automatically retracts to the inner side of the support block 41. The upper and lower end surfaces of the clamping block 5 are both glued and fixed with anti-skid adhesive layers. As long as the reset force of the reset spring 7 on the clamping block 5 is smaller than the resistance of the cover body 2 when pressing the clamping block 5 by its own gravity, the clamping block 5 can be kept clamped to the cover body 2 to make it tilted.

[0048] Reference Figure 1 , Figure 5 The two sides of the end surface of the pry plate 4 facing the lifting rod 3 are integrally formed with guard plates 42. When the lifting rod 3 is rotated to fit with the pry plate 4, the lifting rod 3 is located between the two side guard plates 42, and the two side guard plates 42 are used to limit and protect the closed lifting rod 3. A circular circlip 43 is fixedly connected between the two side guard plates 42 at the upper end of the pry plate 4. The bayonet of the circular circlip 43 faces one side of the lifting rod 3, and the bayonet width is smaller than the diameter of the lifting rod 3. The circular circlip 43 is used to fix the lifting rod 3 on the pry plate 4 for limiting, and it is also effortless to open the lifting rod 3, which further increases the convenience of storage and carrying.

[0049] The implementation principle of the side sealing manhole cover and its opening tool in the embodiment of the present application is:

[0050] When the opening tool is not in use, the lifting rod 3 and the pry plate 4 can be rotated and closed, which is convenient for handholding and carrying; when using the opening tool to open the manhole cover, the pry block 33 at the end of the lifting rod 3 is first inserted into the operating hole 22 and rotated to complete the locking, and then the pry plate 4 is lowered to make the support block 41 abut against the manhole seat 1, and the end of the pry plate 4 away from the manhole cover will be tilted to form a lever. At this time, stepping on this end can lift the side of the cover body 2 close to the opening tool through the pry block 33, and a gap will appear between the lifted end of the cover body 2 and the manhole seat 1; then push the pedal 62 forward by foot, so that the front end of the block 5 is pushed out and enters the gap, so that the operator's foot can release the pry plate 4 and the cover body 2 can keep the tilted state, which is convenient for the operator to lift or transfer the cover body 2 through the lifting rod 3 in a more labor-saving posture.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A side sealing manhole cover, characterized in that: The invention comprises a well seat (1) and a cover body (2); the cover body (2) is provided with an operating hole (22), and the operating hole (22) is in an elongated strip shape; the cover body (2) is provided with a cylindrical operating cavity (23) on the inner side of the operating hole (22), and the diameter of the operating cavity (23) is greater than the length of the operating hole (22); a circle of annular clearance grooves (11) are provided between the side wall of the cover body (2) and the inner wall of the well seat (1), and a circle of flexible sealing rings (21) are provided in the clearance grooves (11), and the thickness of the sealing rings (21) is greater than the width of the clearance grooves (11); the sealing rings (21) are fixedly connected to the side wall of the cover body (2), or the sealing rings (21) are fixedly connected to the inner wall of the well seat (1); the outer cross-section of the sealing surface of the sealing ring (21) is in the shape of a vertically extending tooth.

2. An opening tool for the side-sealed manhole cover according to claim 1, characterized in that: The utility model comprises a lifting rod (3) and a prying plate (4); the front end of the prying plate (4) and the lower end of the lifting rod (3) are hinged to each other; the lower end of the lifting rod (3) is provided with an extension column (32), and the bottom of the extension column (32) is provided with a prying block (33) matched with the operation hole (22); the middle lower end of the prying plate (4) is provided with a supporting block (41); when the prying block (33) enters the operation hole (22) and is locked, the prying plate (4) is lowered to enable the supporting block (41) to abut against the well seat (1); the bottom of the supporting block (41) is movably provided with a clamping block (5), and the prying plate (4) is provided with a driving mechanism (6) for driving the clamping block (5) to slide toward the well cover and enter the gap between the cover body (2) and the well seat (1).

3. The opening tool according to claim 2, characterized in that: The clamping block (5) is slidably disposed in the support block (41) in the direction of the prying block (33); an opening (411) for the front end of the clamping block (5) to slide out is provided on one side of the support block (41) facing the prying block (33).

4. The opening tool according to claim 3, characterized in that: The driving mechanism (6) comprises a linkage assembly and a pedal (62); the pedal (62) is movably arranged at one end of the pry plate (4) away from the pry block (33), and the support block (41) is located between the pry block (33) and the pedal (62); one end of the linkage assembly is connected to the clamping block (5), and the other end is connected to the pedal (62).

5. The opening tool according to claim 4, characterized in that: The pedal (62) is slidably arranged on the pry plate (4) along the length direction of the pry plate (4); the linkage assembly comprises an L-shaped push plate (61), the vertical section (611) of the push plate (61) is fixedly connected to the block (5), the horizontal section (612) is slidably connected to the pry plate (4), and the end of the horizontal section (612) of the push plate (61) is fixedly connected to the bottom of the pedal (62).

6. The opening tool according to claim 5, characterized in that: The pry plate (4) is provided with a return tension spring (7), one end of which is connected to the end of the pry plate (4) away from the pry block (33), and the other end of which is connected to the lower part of the front end of the pedal (62).

7. The opening tool according to claim 5, characterized in that: The front end of the pedal (62) is provided with a limit baffle (621) protruding upward.

8. The opening tool according to claim 2, characterized in that: The upper and lower end surfaces of the clamping block (5) are both provided with anti-slip rubber layers.

9. The opening tool according to claim 2, characterized in that: Guard plates (42) are arranged on both sides of the end surface of the pry plate (4) facing the lifting rod (3); when the lifting rod (3) is rotated to fit with the pry plate (4), the lifting rod (3) is located between the guard plates (42) on both sides.

10. The opening tool according to claim 9, characterized in that: A circular retaining spring (43) is arranged at the upper end of the pry plate (4) between the two side guard plates (42), the retaining opening of the circular retaining spring (43) faces one side of the lifting rod (3), and the retaining opening width is smaller than the diameter of the lifting rod (3).

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