Thermal well lid

Abstract

The utility model relates to a thermal well lid, and relates to the technical field of well lids, the thermal well lid comprises a well lid frame and a well lid plate, a circular hole is formed in the well lid frame, the well lid plate comprises an outer cover plate and an inner cover plate, the outer cover plate and the inner cover plate are coaxially arranged and fixedly connected, the diameter of the outer cover plate is the same as that of the circular hole, and the diameter of the inner cover plate is the same as that of the circular hole. The diameter of the inner cover plate is smaller than that of the outer cover plate, a fixing circular ring is arranged in the circular hole and fixedly connected to the well lid frame, the inner cover plate is arranged in the fixing circular ring, a plurality of limiting blocks are fixedly connected to the outer arc face of the inner cover plate, grooves are formed in the positions, opposite to the limiting blocks, of the fixing circular ring, and the limiting blocks are arranged in the grooves. The limiting block is arranged below the fixing circular ring, and a plurality of moving grooves are formed in the side, away from the inner cover plate, of the outer cover plate. The thermal well lid has the effect of improving the anti-theft performance of the thermal well lid.

Description

Technical Field

[0001] The present application relates to the technical field of manhole covers, and in particular to a thermal manhole cover. Background Art

[0002] There is usually a high-temperature gas supply pipe under the thermal manhole cover. The temperature inside is very high. Because of the high temperature, it is very dangerous, so absolute anti-theft protection is required. If the manhole cover is lost, it may cause very serious consequences.

[0003] The existing manhole cover comprises a manhole cover frame and a manhole cover plate. The manhole cover frame is used to support the manhole cover plate. Two lifting holes are provided on the manhole cover plate to facilitate taking the manhole cover plate.

[0004] Therefore, the manhole cover plate can be easily taken out by dragging the manhole cover plate upward through the lifting hole, so the manhole cover plate is easy to be lost, which is not conducive to the anti-theft of the manhole cover. Utility Model Content

[0005] In order to improve the anti-theft performance of a thermal manhole cover, the present application provides a thermal manhole cover.

[0006] The thermal manhole cover provided in this application adopts the following technical solution:

[0007] A thermal manhole cover comprises a manhole cover frame and a manhole cover plate, wherein a circular hole is formed in the manhole cover frame, and the manhole cover plate comprises an outer cover plate and an inner cover plate, wherein the outer cover plate is coaxially arranged and fixedly connected to the inner cover plate, the diameter of the outer cover plate is the same as the diameter of the circular hole, and the diameter of the inner cover plate is smaller than the diameter of the outer cover plate, a fixing ring is formed in the circular hole, the fixing ring is fixedly connected to the manhole cover frame, the inner cover plate is placed in the fixing ring, a plurality of limit blocks are fixedly connected to the outer arc surface of the inner cover plate, a groove is formed on the fixing ring opposite to the limit block, the limit block is placed below the fixing ring, and a plurality of movable grooves are formed on the side of the outer cover plate away from the inner cover plate.

[0008] By adopting the above technical solution, when installing the thermal manhole cover, the manhole cover is placed on the manhole cover frame, and at the same time, the limit block is passed through the groove and placed under the fixed ring, and then an external rod or other tool is used to insert the tool into the movable groove, and then the manhole cover is rotated to make the limit block fixed on the inner cover plate away from the groove, thereby limiting the upward movement of the manhole cover by the fixed ring, so that thieves cannot directly open the manhole cover from the outside, and it is difficult for thieves to determine the structure of this thermal manhole cover by observing from the outside, and even if the thieves know the structure of this type of manhole cover, it is difficult for them to rotate the outer cover plate by hand without tools, thereby greatly improving the anti-theft performance of this thermal manhole cover.

[0009] Optionally, the slot opening of the movable slot is larger than the slot bottom of the movable slot.

[0010] By adopting the above technical solution, it is convenient for external tools to enter the movable groove, thereby improving the efficiency of rotating the manhole cover.

[0011] Optionally, a sealing ring is provided at the upper end of the fixed ring.

[0012] By adopting the above technical solution, the gap between the manhole cover and the manhole cover frame can be sealed by the sealing ring, thereby reducing the moisture on the road from entering the circular hole in the manhole cover.

[0013] Optionally, a water stop groove is provided at the upper end of the fixed circular ring, the water stop groove is arranged along the circumference of the fixed circular ring, and the sealing ring is placed in the water stop groove.

[0014] By adopting the above technical solution, the water stop groove can limit the flow of water on the end face of the fixed ring, and at the same time, the water stop groove can play a limiting role on the sealing ring, thereby improving the stability of the sealing ring on the fixed ring.

[0015] Optionally, a plurality of anti-sliding blocks are fixedly connected to the upper end surface of the manhole cover frame and the upper end surface of the manhole cover plate.

[0016] By adopting the above technical scheme, the friction between the upper end surface of the manhole cover frame and the upper end surface of the manhole cover plate and the workers can be increased through the anti-sliding block, thereby reducing the phenomenon of workers slipping on the upper end surface of the manhole cover frame and the upper end surface of the manhole cover plate.

[0017] Optionally, positioning blocks are fixedly connected to the upper end surface of the manhole cover frame and the upper end surface of the manhole cover plate, and when the limiting blocks are placed directly below the groove, the distance between the two limiting blocks is the smallest.

[0018] By adopting the above technical solution, the position of the limit blocks can be determined by observing the position and distance between the two limit blocks, thereby facilitating the removal of the manhole cover from the manhole cover frame.

[0019] Optionally, a connecting pipe is fixedly connected to the lower end of the manhole cover frame, the connecting pipe is coaxially arranged with the circular hole and is communicated with the circular hole, a water-swellable rubber strip is fixedly connected to the inner wall of the connecting pipe at one end away from the circular hole, and the water-swellable rubber strip is arranged around the inner wall of the connecting pipe.

[0020] By adopting the above technical solution, the connecting pipe can be sleeved on the PVC pipe where the protective valve of the thermal pipeline is located. At the same time, the gap between the sealing connecting pipe and the PVC pipe can be improved by using the water-expanding rubber strip to improve the sealing performance.

[0021] Optionally, the manhole cover frame and the manhole cover plate are both made of fiberglass.

[0022] By adopting the above technical solution, the wear resistance of the manhole cover frame and the manhole cover plate made of fiberglass can be improved, which not only reduces the weight but also reduces the corrosion of the manhole cover frame and the manhole cover plate.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The manhole cover can be restricted from moving up by a fixed ring, so that thieves cannot directly open the manhole cover from the outside, and it is difficult for thieves to determine the structure of the thermal manhole cover by external observation. If the thieves know the structure of such manhole covers, it is difficult for them to turn the outer cover by hand without tools, which can greatly improve the anti-theft performance of the thermal manhole cover;

[0025] 2. The gap between the manhole cover and the manhole cover frame can be sealed with a sealing ring to reduce the amount of moisture on the road from entering the circular hole in the manhole cover;

[0026] 3. The connecting pipe can be placed on the PVC pipe where the protective valve of the thermal pipeline is located. At the same time, the gap between the sealing connecting pipe and the PVC pipe can be improved by using a rubber strip that expands when exposed to water, thereby improving the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0028] Figure 2 is a schematic structural diagram of a circular hole in an embodiment of the present application;

[0029] Figure 3 It is a schematic structural diagram of a water stop groove of an embodiment of the present application;

[0030] Figure 4 It is a schematic diagram of the structure of the limit block of an embodiment of the present application;

[0031] In the figure, 1, manhole cover frame; 2, manhole cover plate; 21, outer cover plate; 211, movable groove; 22, inner cover plate; 221, limit block; 23, round hole; 3, connecting pipe; 31, water-swelling rubber strip; 4, fixed ring; 41, water stop groove; 42, groove; 5, positioning block; 6, sealing ring; 7, anti-sliding block. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1 -Attached Figure 4 , further details of this application are given.

[0033] The embodiment of the present application is: a thermal manhole cover, referring to Figure 1 and Figure 2, including a manhole cover frame 1 set in a rectangular shape, a circular hole 23 is opened on the manhole cover frame 1, a fixed circular ring 4 is arranged in the circular hole 23, the fixed circular ring 4 is coaxially arranged with the circular hole 23, and the arc-shaped outer side wall of the fixed circular ring 4 is fixedly connected to the inner circumferential surface of the circular hole 23.

[0034] The circular hole 23 is covered with a manhole cover plate 2. A plurality of anti-sliding blocks 7 are fixedly connected to the upper end surfaces of the manhole cover plate 2 and the manhole cover frame 1. The anti-sliding blocks 7 are arranged in a cross shape.

[0035] Reference Figure 1 , Figure 2 and Figure 3 The manhole cover plate 2 includes an outer cover plate 21 and an inner cover plate 22, which are cast together. The diameter of the outer cover plate 21 is the same as the diameter of the circular hole 23. The edge of the lower end surface of the outer cover plate 21 abuts against the upper end surface of the fixed circular ring 4. The inner cover plate 22 is placed at the lower end of the outer cover plate 21 and is coaxially arranged with the outer cover plate 21. The diameter of the outer cover plate 21 is the same as the inner diameter of the fixed circular ring 4.

[0036] Reference Figure 2 , Figure 3 and Figure 4 Two limit blocks 221 are fixedly connected to the arc-shaped outer wall of the inner cover plate 22, and the inner cover plate 22 is placed between the two limit blocks 221. A groove 42 is provided on the fixed ring 4 opposite to the limit block 221 for the limit block 221 to pass through, and the limit block 221 is placed below the groove 42.

[0037] The outer cover plate 21 is thereby rotated to cancel the state where the limiting block 221 is directly opposite to the groove 42 , so that the lifting of the entire manhole cover plate 2 can be limited by the limiting block 221 .

[0038] Reference Figure 1 In order to facilitate the rotation of the outer cover plate 21, two movable grooves 211 are provided on the upper end surface of the outer cover plate 21. The groove opening of the movable groove 211 is larger than the groove bottom of the movable groove 211. Therefore, an external rod tool can be used to insert the tool into the movable groove 211, and then the manhole cover plate 2 is driven to rotate by the tool.

[0039] Reference Figure 3 A water stop groove 41 is provided on the upper end surface of the fixed ring 4. The water stop groove 41 is arranged in an annular shape and is arranged along the circumference of the fixed ring 4. A sealing ring 6 is slidably inserted in the water stop groove 41, and the outer cover plate 21 presses the sealing ring 6 into the water stop groove 41.

[0040] A connecting pipe 3 is provided on the lower end surface of the manhole cover frame 1 for sleeved on the PVC pipe where the protective valve is located. The inner diameter of the connecting pipe 3 is the same as the diameter of the circular hole 23. One end of the connecting pipe 3 is fixedly connected and communicated with the circular hole 23. A water-swellable rubber strip 31 is provided at one end of the connecting pipe 3 away from the manhole cover frame 1. The water-swellable rubber strip 31 is arranged in an annular shape and is arranged around the inner arc surface of the connecting pipe 3. The water-swellable rubber strip 31 is fixedly connected to the connecting pipe 3.

[0041] The implementation principle of the embodiment of the present application is: the connecting pipe 3 is plugged into the PVC pipe where the protective valve of the thermal pipeline is located, and the gap between the two is reduced by the water-swelling rubber strip 31. Then, when installing the manhole cover 2 on the manhole cover frame 1, the manhole cover 2 is first placed above the circular hole 23 on the manhole cover frame 1, and at the same time, the limit block 221 is passed through the groove 42 and placed under the fixed ring 4. Then, an external rod tool is used to insert the rod tool into the movable groove 211, and then the manhole cover 2 is rotated to make the limit block 221 away from the groove 42, thereby completing the installation of the manhole cover 2 of this thermal pipeline.

[0042] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A thermal manhole cover, characterized in that: The invention comprises a manhole cover frame (1) and a manhole cover plate (2), wherein a circular hole (23) is formed on the manhole cover frame (1), and the manhole cover plate (2) comprises an outer cover plate (21) and an inner cover plate (22), wherein the outer cover plate (21) and the inner cover plate (22) are coaxially arranged and fixedly connected, wherein the diameter of the outer cover plate (21) is the same as the diameter of the circular hole (23), and the diameter of the inner cover plate (22) is smaller than the diameter of the outer cover plate (21), and a fixing ring (4) is provided in the circular hole (23). The fixed circular ring (4) is fixedly connected to the manhole cover frame (1), the inner cover plate (22) is placed inside the fixed circular ring (4), a plurality of limit blocks (221) are fixedly connected to the outer arc surface of the inner cover plate (22), a groove (42) is provided on the fixed circular ring (4) opposite to the limit blocks (221), the limit blocks (221) are placed below the fixed circular ring (4), and a plurality of movable grooves (211) are provided on a side of the outer cover plate (21) away from the inner cover plate (22).

2. A thermal manhole cover according to claim 1, characterized in that: The groove opening of the movable groove (211) is larger than the groove bottom of the movable groove (211).

3. A thermal manhole cover according to claim 1, characterized in that: A sealing ring (6) is provided at the upper end of the fixed circular ring (4).

4. A thermal manhole cover according to claim 3, characterized in that: A water stop groove (41) is provided at the upper end of the fixed circular ring (4), the water stop groove (41) is arranged along the circumference of the fixed circular ring (4), and the sealing ring (6) is placed in the water stop groove (41).

5. A thermal manhole cover according to claim 1, characterized in that: A plurality of anti-sliding blocks (7) are fixedly connected to the upper end surface of the manhole cover frame (1) and the upper end surface of the manhole cover plate (2).

6. A thermal manhole cover according to claim 1, characterized in that: Positioning blocks (5) are fixedly connected to the upper end surface of the manhole cover frame (1) and the upper end surface of the manhole cover plate (2); when the limiting blocks (221) are placed directly below the groove (42), the distance between the two limiting blocks (221) is the smallest.

7. A thermal manhole cover according to claim 1, characterized in that: A connecting pipe (3) is fixedly connected to the lower end of the manhole cover frame (1); the connecting pipe (3) is coaxially arranged with the circular hole (23) and the connecting pipe (3) is in communication with the circular hole (23); a water-swellable rubber strip (31) is fixedly connected to the inner wall of the connecting pipe (3) at one end away from the circular hole (23); the water-swellable rubber strip (31) is arranged around the inner wall of the connecting pipe (3).

8. A thermal manhole cover according to claim 1, characterized in that: The manhole cover frame (1) and the manhole cover plate (2) are both made of glass fiber reinforced plastic.

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