High-strength cast iron manhole cover

Abstract

The utility model discloses a high -strength cast -iron well lid belongs to cast -iron well lid technical field, including well lid subassembly, well lid subassembly is connected with buffer assembly, fixed component and pull -out component respectively, buffer assembly is used to buffer after well lid subassembly is pressed, through the installation ring and threaded rod insert connection after, open well lid, then install the nut to threaded rod and tighten in proper order, can install ring fixed to the cylinder on, when well lid or installation ring is pressed, spring one and telescopic pole one stress compression, make installation ring get the buffer, prevent well lid and take place abnormal sound, need hold the handle, push baffle into rectangular groove no.

Description

Technical Field

[0001] This utility model relates to the field of cast iron manhole cover technology, and more specifically, to a high-strength cast iron manhole cover. Background Technology

[0002] Cast iron manhole covers are divided into ductile iron manhole covers and gray cast iron manhole covers. Generally speaking, ductile iron manhole covers of the same weight have stronger compressive strength than gray cast iron manhole covers. Gray cast iron manhole covers are generally made of HT200 material, while ductile iron manhole covers are generally made of QT500-7 material. Cast iron manhole covers are commonly used on municipal roads and highways.

[0003] The existing manhole covers lack shock absorption devices, so they are prone to making abnormal noises when they are run over by vehicles. At the same time, the handles used to lift the manhole covers are easily corroded because they are exposed to the outside.

[0004] The hoisting equipment in the above-mentioned device not only has to hoist the support plate as a whole to the top of the maintenance platform, but also has to carry the base plate and all the devices above the base plate, which will cause the hoisting equipment to work under high load. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a high-strength cast iron manhole cover, solving the aforementioned problems.

[0007] (II) Technical Solution

[0008] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a high-strength cast iron manhole cover, comprising a manhole cover assembly, wherein the manhole cover assembly is respectively connected to a buffer assembly, a fixing assembly and a lifting assembly, wherein the buffer assembly is used to buffer the manhole cover assembly after it is subjected to pressure, the fixing assembly is used to connect the buffer assembly to the manhole cover assembly, and the lifting assembly is used to open the manhole cover assembly.

[0009] Preferably, the manhole cover assembly includes a cylindrical body, the top of which is connected to a buffer assembly. A mounting ring is connected to the top of the buffer assembly. Grooves are formed on both the left and right sides of the top of the mounting ring, penetrating the inner wall of the mounting ring. The inner wall of the mounting ring is in close contact with the manhole cover. A protrusion is installed on the outer right wall of the manhole cover, rotatably connected to the inner wall of a set of grooves. A protrusion is installed on the outer left wall of the manhole cover, inserted into the inner wall of another set of grooves. A limit plate is fixedly installed between the top of the protrusion and the top of the mounting ring by screws. The top of the protrusion is connected to a lifting assembly.

[0010] Preferably, the buffer assembly includes a circular groove, and several sets of the circular grooves are evenly opened on the top of the cylinder. Each set of the circular grooves has a telescopic rod and a spring installed at the bottom. Each set of the springs is sleeved on the outside of the telescopic rod, and the top of each set of the telescopic rod and spring is connected to the bottom of the mounting ring. The top of the telescopic rod is connected to the fixing assembly.

[0011] Preferably, the fixing component includes an annular groove formed on the inner wall of the lower end of the mounting ring, and a threaded rod is installed on the top of the telescopic rod, the threaded rod passing through the interior of the annular groove, and a nut is threadedly connected to the upper end of the threaded rod.

[0012] Preferably, the lifting assembly includes a rectangular groove, which is formed on the top of the protrusion, and a handle is installed on the inner wall of the rectangular groove.

[0013] Preferably, a second rectangular groove is formed on the inner wall of the first rectangular groove, and a baffle is slidably connected to the inner wall of the second rectangular groove. A second telescopic rod and a second spring are respectively installed between the side wall of the baffle and the inner wall of the second rectangular groove, and the second spring is sleeved on the outside of the second telescopic rod.

[0014] Preferably, several sets of rectangular blocks are evenly installed on the top of the manhole cover, and a nameplate slot is provided on the top of the manhole cover.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a high-strength cast iron manhole cover, which has the following beneficial effects:

[0017] After connecting the mounting ring to the threaded rod, open the manhole cover, then install the nut onto the threaded rod and tighten it in sequence to fix the mounting ring onto the cylinder. When the manhole cover or mounting ring is under pressure, the spring and the telescopic rod are compressed, which buffers the mounting ring and prevents the manhole cover from making abnormal noise.

[0018] When the handle needs to be held, push the baffle into the rectangular groove 2. When the handle is not needed, the spring 2 and the telescopic rod 2 will automatically push the baffle to block the rectangular groove 1, preventing external debris from entering the rectangular groove 1. Attached Figure Description

[0019] Figure 1 A schematic diagram of a preferred embodiment of the novel high-strength cast iron manhole cover provided by this utility model;

[0020] Figure 2 for Figure 1 The diagram shows the structural schematic of the cylindrical structure.

[0021] Figure 3 for Figure 1 The diagram shown is a structural schematic of the manhole cover.

[0022] Figure 4 for Figure 1 The enlarged schematic diagram of part A shown below;

[0023] Figure 5 for Figure 2 The enlarged schematic diagram of section B is shown below;

[0024] Figure 6 for Figure 3 The enlarged schematic diagram of section C is shown.

[0025] In the diagram: 1. Manhole cover assembly; 11. Cylinder; 12. Mounting ring; 13. Manhole cover; 14. Protrusion 1; 15. Groove; 16. Protrusion 2; 2. Buffer assembly; 21. Telescopic rod 1; 22. Spring 1; 23. Circular groove; 3. Fixing assembly; 31. Annular groove; 32. Nut; 33. Threaded rod; 4. Lifting assembly; 41. Rectangular groove 1; 42. Baffle; 43. Handle; 44. Spring 2; 45. Rectangular groove 2; 46. Telescopic rod 2; 5. Limiting plate; 6. Rectangular block; 7. Nameplate groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-5 This utility model provides a technical solution:

[0028] A high-strength cast iron manhole cover includes a manhole cover assembly 1, which is connected to a buffer assembly 2, a fixing assembly 3, and a lifting assembly 4. The buffer assembly 2 is used to buffer the manhole cover assembly 1 when it is subjected to pressure, the fixing assembly 3 is used to connect the buffer assembly 2 to the manhole cover assembly 1, and the lifting assembly 4 is used to open the manhole cover assembly 1.

[0029] Furthermore, the manhole cover assembly 1 includes a cylindrical body 11, the top of which is connected to a buffer assembly 2. A mounting ring 12 is connected to the top of the buffer assembly 2. Grooves 15 are provided on both the left and right sides of the top of the mounting ring 12. The grooves 15 penetrate the inner wall of the mounting ring 12. The inner wall of the mounting ring 12 is in close contact with the manhole cover 13. A protrusion 14 is installed on the outer wall of the right end of the manhole cover 13. The protrusion 14 is rotatably connected to the inner wall of a set of grooves 15. A protrusion 26 is installed on the outer wall of the left end of the manhole cover 13. The protrusion 26 is inserted into the inner wall of another set of grooves 15. A limit plate 5 is fixedly installed between the top of the protrusion 26 and the top of the mounting ring 12 by screws. The top of the protrusion 26 is connected to the lifting assembly 4. When the manhole cover 13 or the mounting ring 12 is subjected to pressure, the buffer assembly 2 will dampen the manhole cover 13 to prevent the pressure from being directly applied to the cylindrical body 11.

[0030] Furthermore, the buffer assembly 2 includes circular grooves 23. Several sets of circular grooves 23 are evenly opened on the top of the cylinder 11. Each set of circular grooves 23 has a telescopic rod 21 and a spring 22 installed at the bottom. Each set of springs 22 is sleeved on the outside of the telescopic rod 21. The top of each set of telescopic rods 21 and springs 22 is connected to the bottom of the mounting ring 12. The top of the telescopic rod 21 is connected to the fixing assembly 3. When the manhole cover 13 or the mounting ring 12 is subjected to pressure, the springs 22 and the telescopic rods 21 are compressed, so that the mounting ring 12 is buffered and prevents the manhole cover 13 from making abnormal noise.

[0031] Furthermore, the fixing component 3 includes an annular groove 31, which is formed on the inner wall of the lower end of the mounting ring 12. A threaded rod 33 is installed on the top of the telescopic rod 21, and the threaded rod 33 passes through the interior of the annular groove 31. A nut 32 is threadedly connected to the upper end of the threaded rod 33. After the mounting ring 12 and the threaded rod 33 are inserted and connected, the well cover 13 is opened, and then the nut 32 is installed on the threaded rod 33 and tightened in sequence to fix the mounting ring 12 to the cylinder 11.

[0032] Furthermore, the lifting assembly 4 includes a rectangular groove 41, which is opened on the top of the protrusion 16. A handle 43 is installed on the inner wall of the rectangular groove 41. By releasing the limiting plate 5 and holding the handle 43, the manhole cover 13 can be pulled up from inside the mounting ring 12.

[0033] Furthermore, a rectangular groove 45 is formed on the inner wall of the first rectangular groove 41. A baffle 42 is slidably connected to the inner wall of the second rectangular groove 45. A telescopic rod 46 and a spring 44 are respectively installed between the side wall of the baffle 42 and the inner wall of the second rectangular groove 45. The spring 44 is sleeved on the outside of the telescopic rod 46. When the handle 43 needs to be held, the baffle 42 is pushed into the second rectangular groove 45. When the handle 43 is not needed, the spring 44 and the telescopic rod 46 will automatically push the baffle 42 to block the first rectangular groove 41, preventing external debris from entering the first rectangular groove 41.

[0034] Furthermore, several sets of rectangular blocks 6 are evenly installed on the top of the manhole cover 13, and a nameplate groove 7 is provided on the top of the manhole cover 13. The rectangular blocks 6 can improve the friction of the top of the manhole cover 13, and the nameplate groove 7 is used to record the function of the manhole cover 13.

[0035] Working principle: After the buffer component 2 is connected to the manhole cover component 1 by the fixing component 3, when the manhole cover component 1 is subjected to external pressure, the buffer component 2 will help the manhole cover component 1 to absorb shock and prevent the manhole cover component 1 from making noise. The manhole cover component 1 can be opened by lifting component 4.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-strength cast iron manhole cover, comprising a manhole cover assembly (1), characterized in that: The manhole cover assembly (1) is connected to a buffer assembly (2), a fixing assembly (3) and a lifting assembly (4). The buffer assembly (2) is used to buffer the manhole cover assembly (1) after it is subjected to pressure. The fixing assembly (3) is used to connect the buffer assembly (2) to the manhole cover assembly (1). The lifting assembly (4) is used to open the manhole cover assembly (1).

2. The high-strength cast iron manhole cover according to claim 1, characterized in that: The manhole cover assembly (1) includes a cylindrical body (11), the top of which is connected to a buffer assembly (2). The top of the buffer assembly (2) is connected to an installation ring (12). The top of the installation ring (12) has grooves (15) on both the left and right sides. The grooves (15) penetrate the inner wall of the installation ring (12). The inner wall of the installation ring (12) is in close contact with the manhole cover (13). A protrusion (14) is installed on the outer wall of the right end of the manhole cover (13). The protrusion (14) is rotatably connected to the inner wall of a set of grooves (15). A protrusion (2) is installed on the outer wall of the left end of the manhole cover (13). The protrusion (2) is inserted into the inner wall of another set of grooves (15). A limit plate (5) is fixedly installed between the top of the protrusion (2) and the top of the installation ring (12) by screws. The top of the protrusion (2) is connected to the lifting assembly (4).

3. A high-strength cast iron manhole cover according to claim 2, characterized in that: The buffer assembly (2) includes a circular groove (23). Several sets of circular grooves (23) are evenly opened on the top of the cylinder (11). Each set of circular grooves (23) has a telescopic rod (21) and a spring (22) installed at the bottom. Each set of springs (22) is sleeved on the outside of the telescopic rod (21). The top of each set of telescopic rods (21) and springs (22) is connected to the bottom of the mounting ring (12). The top of the telescopic rod (21) is connected to the fixing assembly (3).

4. A high-strength cast iron manhole cover according to claim 3, characterized in that: The fixing component (3) includes an annular groove (31), which is formed on the inner wall of the lower end of the mounting ring (12). A threaded rod (33) is installed on the top of the telescopic rod (21), which extends through the annular groove (31). A nut (32) is threaded to the upper end of the threaded rod (33).

5. A high-strength cast iron manhole cover according to claim 2, characterized in that: The lifting assembly (4) includes a rectangular groove (41) which is opened on the top of the protrusion (16), and a handle (43) is installed on the inner wall of the rectangular groove (41).

6. A high-strength cast iron manhole cover according to claim 5, characterized in that: The inner wall of the first rectangular groove (41) is provided with a second rectangular groove (45). A baffle (42) is slidably connected to the inner wall of the second rectangular groove (45). A telescopic rod (46) and a spring (44) are respectively installed between the side wall of the baffle (42) and the inner wall of the second rectangular groove (45). The spring (44) is sleeved on the outside of the telescopic rod (46).

7. A high-strength cast iron manhole cover according to claim 2, characterized in that: The top of the manhole cover (13) is evenly equipped with several sets of rectangular blocks (6), and the top of the manhole cover (13) is provided with a nameplate groove (7).

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