Safe and easy-to-open manhole for container

Abstract

The utility model relates to the technical field of oil field equipment, in particular to a safe easily-opened manhole for a container, which comprises a manhole shell ring, a flange and a flange cover, a first lug plate and a third lug plate which are horizontally arranged are fixed on the flange cover; a second lug plate and a fourth lug plate which are horizontally arranged are fixed on the flange; the first lug plate is located on the second lug plate, and the third lug plate is located on the fourth lug plate. The first lug plate and the third lug plate are each provided with an oval hole, and the second lug plate and the fourth lug plate are each provided with a round hole. A vertically arranged shaft penetrates through the elliptical hole and the round hole; an L-shaped positioning plate is arranged on the fourth lug plate and comprises a vertical plate and a horizontal plate which are integrally connected; the vertical plate is fixed to the fourth lug plate, a bolt is connected to the horizontal plate in a threaded mode, and a threaded hole matched with the bolt is formed in the third lug plate. By means of the integral design, the manhole is convenient to assemble, time and labor are saved in the opening and closing process, and higher safety is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of oilfield equipment, and particularly relates to a safety and easy-to-open manhole for a container. Background Art

[0002] In the petroleum industry, material storage containers are widely used. For example, common bulk material tanks are often used material storage tools. However, there are some potential safety hazards in the actual operation of traditional material storage containers. For example, when opening the manhole, due to the heavy flange cover, it is not easy to control and is prone to cause accidental injuries to operators. In order to improve the safety and use efficiency of the manhole and increase the work convenience and safety of operators, it is necessary to design a safety and easy-to-open manhole for a container that is labor-saving and highly safe. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and propose to design a safety and easy-to-open manhole for a container, which is not only labor-saving but also has high safety when opening and closing the manhole.

[0004] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0005] A safety and easy-to-open manhole for a container includes a manhole barrel section, a flange, and a flange cover; the flange is installed on the manhole barrel section, and the flange cover and the flange are connected by bolts; a horizontally arranged first ear plate and a third ear plate are fixed on the flange cover, and a horizontally arranged second ear plate and a fourth ear plate are fixed on the flange; the first ear plate is located above the second ear plate, and the third ear plate is located above the fourth ear plate; a first oval hole is provided on the first ear plate, a first round hole is provided on the second ear plate, a second oval hole is provided on the third ear plate, and a second round hole is provided on the fourth ear plate; a vertically arranged shaft passes through the first oval hole, the first round hole, the second oval hole, and the second round hole, and fixing parts are installed at the upper and lower ends of the shaft; an L-shaped positioning plate is arranged on the fourth ear plate, and the positioning plate includes a vertically arranged plate and a horizontally arranged plate that are integrally connected; the vertically arranged plate is fixed on the fourth ear plate, and a bolt is threadedly connected to the horizontally arranged plate, and a threaded hole matching the bolt is provided on the third ear plate.

[0006] In the above technical solution, the flange cover is supported by the first ear plate and the third ear plate, and the first ear plate and the third ear plate are respectively supported by the second ear plate and the fourth ear plate provided on the flange. Moreover, the first ear plate, the second ear plate, the third ear plate and the fourth ear plate are all horizontally arranged, and the flange cover can be opened by applying a horizontal force, which is time-saving, labor-saving, safe and reliable, and avoids the problem that when the flange cover is opened, due to its own gravity, it is relatively laborious to open downward and is likely to cause harm to the staff. During assembly, initial positioning can also be carried out through the L-shaped positioning plate, and the third ear plate is placed into the L-shaped positioning plate. Due to the blocking of the horizontal plate, it can also prevent the flange cover from tilting upward due to its own gravity, which is convenient for assembly, time-saving, labor-saving and has higher safety.

[0007] Further, the manhole cylinder section is installed on the tank body, a support plate is fixedly installed on the tank body, a support arm is installed on the support plate, the support arm is located above the shaft and is coaxially arranged with the shaft; a rotating arm is installed on the support arm, the rotating arm is horizontally arranged and can rotate in the horizontal direction; a hook is installed at the end of the rotating arm; a lifting ring for cooperating with the hook is arranged on the flange cover.

[0008] Further, when the flange cover is closed on the flange, the side surface of the vertical plate is exactly flush with the side surface of the third ear plate, and the bolt can be screwed into the threaded hole of the third ear plate and the fourth ear plate in sequence.

[0009] Further, the first ear plate is of an L-shaped structure, one end is fixed to the edge of the flange cover, and the other end is provided with a first oval hole.

[0010] Further, the second ear plate is of an L-shaped structure, one end is fixed to the edge of the flange, and the other end is provided with a first round hole.

[0011] Further, the third ear plate is of an L-shaped structure, one end is fixed to the edge of the flange, and the other end is provided with a second oval hole.

[0012] Further, the fourth ear plate is of an L-shaped structure, one end is fixed to the edge of the flange, and the other end is provided with a second round hole.

[0013] Further, the shaft is a stud or a pin shaft.

[0014] Further, the fixing part is a fastening nut or a pin.

[0015] Further, a handle is arranged on the flange cover for convenient operation.

[0016] The technical effects of the present utility model:

[0017] Compared with the prior art, for the safety and easy - opening manhole for a container of the present utility model, through the arrangement of four ear plates and shafts, the two ear plates supporting the flange cover always remain in the horizontal direction, and the flange cover can be opened by using the horizontal force, which is time - saving, labor - saving, safe and reliable. Through the design of the L - shaped positioning plate, it has the functions of preliminary positioning and preventing the flange cover from tilting upward due to its own gravity, which is convenient for assembly, time - saving and labor - saving, and has higher safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. 6 is a perspective view of the safety and easy - opening manhole for a container according to Embodiment 1 of the present utility model;

[0019] Figure 2 FIG. 10 is a front view of the safety and easy - opening manhole for a container of the present utility model;

[0020] Figure 3 FIG. 14 is a left - hand view of the safety and easy - opening manhole for a container of the present utility model;

[0021] Figure 4 FIG. 18 is a schematic structural view of the first ear plate of the present utility model;

[0022] Figure 5 FIG. 22 is a schematic structural view of the second ear plate of the present utility model;

[0023] Figure 6 FIG. 26 is a schematic structural view of the third ear plate of the present utility model;

[0024] Figure 7 FIG. 30 is a schematic structural view of the fourth ear plate of the present utility model;

[0025] Figure 8 FIG. 34 is an installation schematic view of the safety and easy - opening manhole for a container of the present utility model;

[0026] Figure 9 FIG. 38 is a perspective view of the safety and easy - opening manhole for a container according to Embodiment 2 of the present utility model;

[0027] Figure 10 FIG. 42 is a perspective view of the safety and easy - opening manhole for a container according to Embodiment 3 of the present utility model.

[0028] In the figures, 1, manhole cylinder section; 2, flange; 3, flange cover; 4, bolt; 5, first ear plate; 6, second ear plate; 7, shaft; 8, third ear plate; 9, fourth ear plate; 10, fixing piece; 11, handle; 12, positioning plate; 13, tank body; 14, support plate; 15, support arm; 16, rotating arm; 17, hook; 18, lifting ring; 51, first elliptical hole; 61, first circular hole; 81, second elliptical hole; 91, second circular hole; 121, vertical plate; 122, horizontal plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following clearly and completely describes the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings of the specification.

[0030] Embodiment 1:

[0031] As Figure 1 and 2 shown, a safety and easy - opening manhole for a container involved in this embodiment includes a manhole shell section 1, a flange 2, and a flange cover 3; the flange 2 is installed on the manhole shell section 1, the flange cover 3 and the flange 2 are connected by bolts 4, and a handle 11 is arranged on the side of the flange cover 3; a horizontally - arranged first ear plate 5 and a third ear plate 8 are fixed on the flange cover 3, and the flange cover 3 is supported by the first ear plate 5 and the third ear plate 8; a horizontally - arranged second ear plate 6 and a fourth ear plate 9 are fixed on the flange 2; the first ear plate 5 is located on the second ear plate 6, the third ear plate 8 is located on the fourth ear plate 9, and the first ear plate 5 and the third ear plate 8 are respectively supported by the second ear plate 6 and the fourth ear plate 9 arranged on the flange 2.

[0032] Specifically, as Figure 4 shown, the first ear plate 5 is of an L - shaped structure, with one end fixed to the edge of the flange cover 3 and the other end provided with a first elliptical hole 51. As Figure 5 shown, the second ear plate 6 is of an L - shaped structure, with one end fixed to the edge of the flange 2 and the other end provided with a first circular hole 61. As Figure 6 shown, the third ear plate 8 is of an L - shaped structure, with one end fixed to the edge of the flange 2 and the other end provided with a second elliptical hole 81. As Figure 7 shown, the fourth ear plate 9 is of an L - shaped structure, with one end fixed to the edge of the flange 2 and the other end provided with a second circular hole 91. As Figure 2 shown, a vertically - arranged shaft 7 penetrates through the first elliptical hole 51, the first circular hole 61, the second elliptical hole 81, and the second circular hole 91, and fixing members 10 are installed at the upper and lower ends of the shaft 7. In this embodiment, the shaft 7 adopts a stud, and the fixing members 10 adopt fastening nuts.

[0033] As Figure 8 is the installation schematic diagram of the safety and easy - opening manhole for a container. During the opening and closing process of the flange cover 3 of the present utility model, the first ear plate 5 and the third ear plate 8 always remain in a horizontal state. Therefore, a horizontal force can always be used to open and close the flange cover 3, thus avoiding the unsafe state when the flange cover 3 is opened. At the same time, this method saves time and effort.

[0034] Embodiment 2:

[0035] As Figure 9 shown, a safety and easy - opening manhole for a container involved in this embodiment has a structure basically the same as that of Embodiment 1, and the difference lies in:

[0036] An L-shaped positioning plate 12 is provided on the fourth ear plate 9. The positioning plate 12 includes a vertical plate 121 and a horizontal plate 122 which are integrally connected. The vertical plate 121 is fixed on the fourth ear plate 9, and a bolt is threadedly connected to the horizontal plate 122. A threaded hole matching the bolt is provided on the third ear plate 8. During assembly, the third ear plate 8 can be placed into the L-shaped positioning plate 12. When the flange cover 3 is closed on the flange 2, the side surface of the vertical plate 121 is exactly flush with the side surface of the third ear plate 8, and the bolt can be screwed into the threaded hole of the third ear plate 8 and the fourth ear plate 9 in sequence, which plays a role in initially positioning the installation of the third ear plate 8, and the third ear plate 8 and the fourth ear plate 9 can be fixed by the bolt, further improving the overall stability of the manhole. At the same time, the horizontal plate 122 is located above the third ear plate 8, which can prevent the third ear plate 8 from tilting upward due to its own gravity during assembly, playing a role in initially fixing. When the manhole needs to be opened, the bolt connecting the third ear plate 8 and the fourth ear plate 9 is loosened until the bottom is separated from the fourth ear plate 9, aiming to avoid the bolt affecting the rotation of the third ear plate 8.

[0037] Embodiment 3:

[0038] As Figure 10 shown, a safety and easy-to-open manhole for a container involved in this embodiment has basically the same structure as that in Embodiment 1, and the differences are as follows:

[0039] The manhole cylinder section 1 is installed on the tank body 13. A support plate 14 is fixedly installed on the tank body 13. A support arm 15 is installed on the support plate 14. The support arm 15 is located above the shaft 7 and is coaxially arranged with the shaft 7. A rotating arm 16 is installed on the support arm 15. The rotating arm 16 is horizontally arranged and can rotate in the horizontal direction. A hook 17 is installed at the end of the rotating arm 16. A lifting ring 18 cooperating with the hook 17 is provided on the flange cover 3. During use, the hook 17 is hung on the lifting ring 18, and the rotating arm 16 can rotate along with the rotation of the flange cover 3. The setting of the above technical solution can further ensure the safety of the flange cover 3 and avoid the risk of the flange cover 3 falling off due to the damage of the ear plate.

[0040] The implementation manner in which the rotating arm 16 can rotate in the horizontal direction can adopt the following two manners, but is not limited to the following two implementation manners:

[0041] As a feasible implementation manner: The support arm 15 is fixedly installed on the support plate 14, and the end of the rotating arm 16 is sleeved on the support arm 15 through a hoop, and the hoop can rotate relative to the support arm 15.

[0042] As another feasible implementation: The end of the swing arm 16 is fixedly installed on the support arm 15. A sleeve is provided at the end of the support plate 14, and the sleeve is sleeved on the outer periphery of the support arm 15, enabling the support arm 15 to rotate relative to the sleeve.

[0043] It should be noted that a certain relative movement space can be designed between the hook 17 and the lifting ring 18 as needed, as long as it can ensure that the swing arm 16 can rotate with the flange cover 3.

[0044] The hook 17 and the swing arm 16 can be fixedly connected or hinged.

[0045] The above specific implementation manners are only specific cases of the present invention. The patent protection scope of the present invention includes but is not limited to the above specific implementation manners. Any appropriate changes or modifications made by any person skilled in the art within the scope of the claims of the present invention shall fall within the patent protection scope of the present invention.

Claims

1. A safety and easy-to-open manhole for a container, comprising a manhole shell course, a flange and a flange cover; the flange is installed on the manhole shell course, and the flange cover and the flange are connected by bolts; characterized in that: A first ear plate and a third ear plate which are horizontally arranged are fixed on the flange cover, and a second ear plate and a fourth ear plate which are horizontally arranged are fixed on the flange; the first ear plate is located on the second ear plate, and the third ear plate is located on the fourth ear plate; a first elliptical hole is formed in the first ear plate, a first circular hole is formed in the second ear plate, a second elliptical hole is formed in the third ear plate, and a second circular hole is formed in the fourth ear plate; a vertically arranged shaft penetrates through the first elliptical hole, the first circular hole, the second elliptical hole and the second circular hole, and fixing members are installed at the upper and lower ends of the shaft; an L-shaped positioning plate is arranged on the fourth ear plate, and the positioning plate comprises a vertically arranged plate and a horizontally arranged plate which are integrally connected; the vertically arranged plate is fixed on the fourth ear plate, a bolt is threadedly connected to the horizontally arranged plate, and a threaded hole matching with the bolt is arranged on the third ear plate.

2. The safety and easy-opening manhole for a container according to claim 1, characterized in that: When the flange cover is closed on the flange, the side surface of the vertically arranged plate is exactly flush with the side surface of the third ear plate, and the bolt can be screwed into the threaded hole of the third ear plate and the fourth ear plate in sequence.

3. The safety and easy-opening manhole for containers according to claim 1, characterized in that: The manhole cylinder section is installed on the tank body, a support plate is fixedly installed on the tank body, a support arm is installed on the support plate, the support arm is located above the shaft and is coaxially arranged with the shaft; a rotating arm is installed on the support arm, the rotating arm is horizontally arranged and can rotate in the horizontal direction; a hook is installed at the end of the rotating arm; a lifting ring which is matched with the hook is arranged on the flange cover.

4. The safety and easy-opening manhole for containers according to claim 1, characterized in that: The first ear plate is of an L-shaped structure, one end is fixed on the edge of the flange cover, and the other end is provided with the first elliptical hole.

5. The safety and easy-opening manhole for a container according to claim 1, characterized in that: The second ear plate is of an L-shaped structure, one end is fixed on the edge of the flange, and the other end is provided with the first circular hole.

6. The safety and easy-opening manhole for containers according to claim 1, characterized in that: The third ear plate is of an L-shaped structure, one end is fixed on the edge of the flange, and the other end is provided with the second elliptical hole.

7. The safety and easy-opening manhole for containers according to claim 1, characterized in that: The fourth ear plate is of an L-shaped structure, one end is fixed on the edge of the flange, and the other end is provided with the second circular hole.

8. The safety and easy - opening manhole for a container according to claim 1, characterized in that: The shaft adopts a stud or a pin shaft.

9. The safety and easy - opening manhole for a container according to claim 1, wherein: The fixing member adopts a fastening nut or a pin.

10. The safety and easy-to-open manhole for a container according to any one of claims 1-9, characterized in that: A handle is arranged on the flange cover.

Images