A type of municipal road manhole cover

Abstract

This utility model belongs to the field of manhole cover technology, specifically relating to a municipal road manhole cover, comprising: a manhole ring, the inner wall of which is provided with a support platform; a manhole cover, which is inserted into the top opening of the manhole ring and its bottom edge rests on the support platform; and a drainage gas component, wherein multiple drainage gas components are provided and arranged in an array on the top of the manhole cover. This invention addresses the problem that existing municipal road manhole covers, due to their through holes, pose a significant safety risk when used in deep sewer manholes on municipal roads, as people often throw fire sources (cigarette butts, firecrackers) into the through holes, which can ignite flammable gases in the deep sewer manholes and cause explosions.

Description

Technical Field

[0001] This utility model belongs to the field of manhole cover technology, specifically relating to a municipal road manhole cover. Background Technology

[0002] Municipal road manhole covers are used to cover deep sewer wells on roads to prevent people or objects from falling in. They can be classified by material into metal manhole covers, high-strength fiber cement concrete manhole covers, resin manhole covers, etc. They are generally round and can be used in green belts, sidewalks, motor vehicle lanes, docks, alleys and other places.

[0003] Existing municipal road manhole covers typically have through holes. These holes are designed to release gases from deep sewer wells, preventing the accumulation of toxic or flammable gases and causing suffocation. They also allow for drainage during rainy weather. However, because of these through holes, there are instances where people throw ignition sources (cigarette butts, firecrackers) into the manhole covers, igniting the flammable gases and causing explosions, posing a significant safety risk. Utility Model Content

[0004] Based on the problems mentioned in the background technology above, this utility model provides a municipal road manhole cover to solve the problem that existing municipal road manhole covers, due to their through holes, often pose a significant safety risk when used on deep sewer wells in municipal roads. This risk arises from people throwing fire sources (cigarette butts, firecrackers) into the through holes of the manhole cover, which ignites flammable gases in the deep sewer well and causes an explosion.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A municipal road manhole cover, comprising:

[0007] A well ring, wherein a support platform is provided on the inner wall of the well ring;

[0008] The manhole cover is fitted inside the top opening of the manhole ring, and its bottom edge rests on a support platform;

[0009] A drainage gas component, wherein multiple drainage gas components are provided and arranged in an array on top of the manhole cover.

[0010] Based on the above technical solution, the present invention has made the following improvements:

[0011] Furthermore, the drainage component includes a rectangular through hole, a drainage plate, a water and air groove, an arc-shaped plate, and a locking assembly. The rectangular through hole is located on the top of the manhole cover, and the drainage plate is inserted into the rectangular through hole and locked in place by the locking assembly.

[0012] Multiple water-air troughs are arranged in an array on top of the drainage plate. The bottom opening of each water-air trough has concave arc-shaped side walls. Multiple arc-shaped plates are arranged, and each arc-shaped plate has a stabilizing column at its bottom. A fixing block is provided on the bottom opening wall of the drainage plate, and the stabilizing column passes through the fixing block. A supporting spring is sleeved on the stabilizing column located between the top wall of the fixing block and the bottom wall of the arc-shaped plate. Each arc-shaped plate is located directly below the corresponding water-air trough. The width of the arc-shaped plate is wider than the opening of the water-air trough, and a flow cavity is formed between each arc-shaped plate and the concave side wall of the bottom opening of the corresponding water-air trough.

[0013] Furthermore, the locking assembly includes a stabilizing groove and a stabilizing block. The stabilizing groove is provided on both opposite side walls of the rectangular through hole, and a through hole is provided at the bottom of the stabilizing groove. The stabilizing block is provided on both opposite side walls of the drainage plate, and a screw is provided at the bottom of the stabilizing block. The stabilizing block on the drainage plate is locked in the stabilizing groove on the rectangular through hole. The screw passes through the through hole, and the bottom end of the screw extends to the bottom of the through hole and is threaded with a second nut. The top wall of the second nut is in contact with the bottom wall of the manhole cover.

[0014] Furthermore, multiple slots are arrayed on the inner top wall of the well ring, and a stud is provided at the bottom of each slot. Multiple blocks are arrayed on the top peripheral wall of the well cover, and a countersunk hole is provided on each block. The stud passes through the countersunk hole, and a nut is screwed into the top of the stud. The nut is located in the top countersunk hole of the countersunk hole, and the bottom wall of the nut fits against the bottom of the top countersunk hole.

[0015] Furthermore, multiple filling grooves are arrayed on the bottom outer peripheral wall of the well ring.

[0016] The beneficial effects of this utility model are:

[0017] 1. The drainage gas component facilitates the discharge of gas from the sewer well and also allows rainwater to drain into the sewer well during rainy weather. Furthermore, the combination of the concave arc-shaped wall and arc-shaped plate at the bottom of the water-gas channel within the drainage gas component prevents the throwing of ignition sources (cigarette butts, firecrackers) into the water-gas channel. This prevents the ignition sources (cigarette butts, firecrackers) from entering the sewer well through the water-gas channel and falling under the manhole cover, thus preventing the ignition of flammable gases in the sewer well and the resulting explosion.

[0018] 2. By combining the set slots, studs, blocks, countersunk holes, and nuts, the manhole cover can be securely assembled inside the manhole ring, preventing the manhole cover from shaking inside the manhole ring. Attached Figure Description

[0019] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0020] Figure 1 This is a structural diagram of a municipal road manhole cover according to the present invention;

[0021] Figure 2 This is an exploded view of a municipal road manhole cover according to the present invention;

[0022] Figure 3 This is a cross-sectional view of a municipal road manhole cover according to the present invention;

[0023] Figure 4 This is a structural diagram of some components of a municipal road manhole cover according to the present invention.

[0024] The attached diagram is labeled as follows:

[0025] 101. Well ring; 102. Filling groove; 103. Support platform; 201. Well cover; 301. Slot; 302. Stud; 303. Locking block; 304. Countersunk hole; 305. Nut one; 401. Rectangular through hole; 402. Drainage plate; 403. Stabilizing groove; 404. Through hole; 405. Stabilizing block; 406. Screw; 407. Nut two; 408. Water and air groove; 409. Arc plate; 410. Flow cavity; 411. Fixing block; 412. Stabilizing column; 413. Support spring. Detailed Implementation

[0026] like Figures 1-4 As shown, a municipal road manhole cover includes:

[0027] The well ring 101 has multiple filling grooves 102 arranged in an array on its bottom outer peripheral wall. The well ring 101 is pre-embedded in the road subgrade soil, and the top of the well ring 101 is flush with the road surface. After the well ring 101 is pre-embedded in the road subgrade soil, each filling groove 102 is filled with concrete, which can enhance the connection strength between the well ring 101 and the road subgrade soil and prevent the well ring 101 from detaching from the road subgrade soil.

[0028] The inner wall of the manhole ring 101 is provided with a support platform 103 and a manhole cover 201. The manhole cover 201 is fitted into the top opening of the manhole ring 101, and its bottom edge rests on the support platform 103. Multiple slots 301 are arranged in an array on the inner top opening wall of the manhole ring 101, and each slot 301 has a stud 302 at its bottom. Multiple blocks 303 are arranged in an array on the top peripheral wall of the manhole cover 201, and each block 303 has a countersunk hole 304.

[0029] When the manhole cover 201 is inserted into the top opening of the manhole ring 101 and its bottom edge rests on the support platform 103, the locking block 303 is inserted into the locking groove 301. Then, the stud 302 is inserted into the countersunk hole 304, and the nut 305 is screwed into the top of the stud 302, so that the nut 305 is located in the top countersunk hole of the countersunk hole 304, and the bottom wall of the nut 305 is in contact with the bottom of the top countersunk hole of the countersunk hole 304, thereby locking and fixing the manhole cover 201, so that the manhole cover 201 is stably assembled in the manhole ring 101 and the manhole cover 201 is prevented from shaking in the manhole ring 101.

[0030] The manhole cover 201 has multiple drainage components arranged in an array on top. Each drainage component includes a rectangular through-hole 401, a drainage plate 402, a water-air trough 408, an arc-shaped plate 409, and a locking assembly. The rectangular through-hole 401 is located on top of the manhole cover 201. The drainage plate 402 is fitted into the rectangular through-hole 401 and locked in place by the locking assembly. The locking assembly includes a stabilizing groove 403 and a stabilizing block 405. Stabilizing grooves 403 are provided on both opposite side walls of the rectangular through-hole 401, and through-holes 404 are provided at the bottom of the stabilizing grooves 403. The drainage plate 402 is positioned on both opposite side walls... Each of the drainage plates 402 is equipped with a stabilizing block 405, and a screw 406 is provided at the bottom of the stabilizing block 405. During assembly, the stabilizing block 405 on the drainage plate 402 is inserted into the stabilizing groove 403 on the rectangular through hole 401. Then, the screw 406 is inserted into the through hole 404, and the bottom end of the screw 406 extends to the bottom of the through hole 404. Then, the second nut 407 is screwed into the bottom end of the screw 406, so that the top wall of the second nut 407 fits against the bottom wall of the manhole cover 201. This achieves the stable assembly of the drainage plate 402 in the rectangular through hole 401, preventing the drainage plate 402 from falling out of the rectangular through hole 401.

[0031] Multiple water vapor troughs 408 are provided and arranged in an array on top of the drainage plate 402. The water vapor troughs 408 facilitate the upward discharge of gas in the sewer deep well, or the discharge of rainwater into the sewer deep well during rainy days.

[0032] Each water vapor tank 408 has a concave arc shape at the bottom opening facing both sides. Multiple arc plates 409 are provided, and each arc plate 409 has a stabilizing column 412 at its bottom. A fixing block 411 is provided on the bottom opening wall of the drainage plate 402. The stabilizing column 412 passes through the fixing block 411. A support spring 413 is sleeved on the stabilizing column 412 located between the top wall of the fixing block 411 and the bottom wall of the arc plate 409. The support spring 413 can provide elastic support for the arc plate 409, allowing the arc plate 409 to move up and down.

[0033] Each arc-shaped plate 409 is located directly below the corresponding water and gas trough 408. The width of the arc-shaped plate 409 is wider than the opening of the water and gas trough 408, which further increases the shielding range of the bottom opening of the water and gas trough 408. Furthermore, a flow cavity 410 is formed between each arc-shaped plate 409 and the concave side wall of the bottom opening of the corresponding water and gas trough 408. The arc-shaped plate 409 can shield the area below the opening of the water and gas trough 408, blocking the fire source (cigarette butt, firecracker) thrown into the water and gas trough 408, so that the fire source (cigarette butt, firecracker) cannot enter the manhole cover 201 through the water and gas trough 408 and fall into the deep well of the sewer.

[0034] When assembled and in use, the gas in the sewer well can enter the water-gas trough 408 through the flow cavity 410 and be discharged upwards, achieving the function of venting. On rainy days, rainwater can flow downwards through the water-gas trough 408 and then flow out from the flow cavity 410 into the sewer well, achieving the function of drainage. Furthermore, due to the setting of the support spring 413, when the rainwater is heavy and water accumulates on the manhole cover 201, the water pressure at the water-gas trough 408 increases, which can press down on the arc plate 409, causing the support spring 413 to compress and the flow cavity 410 to widen, thereby accelerating the efficiency of water discharge into the sewer well.

[0035] Furthermore, due to the combination of the concave arc-shaped wall at the bottom of the water-gas trough 408 and the arc-shaped plate 409, the arc-shaped plate 409 can block the water-gas trough 408 from directly below it under normal conditions. This prevents fire sources (cigarette butts, firecrackers) from entering the manhole cover 201 through the water-gas trough 408 and falling into the sewer well. This prevents the ignition of flammable gases in the sewer well and the resulting explosion, further improving safety.

[0036] The present invention has been described in detail above. The specific embodiments are provided only to help understand the method and core idea of ​​the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A municipal road manhole cover, characterized in that: include: Well ring (101), the inner wall of which is provided with a support platform (103). The manhole cover (201) is fitted inside the top opening of the manhole ring (101), and its bottom edge rests on the support platform (103); A drainage gas component, wherein multiple drainage gas components are provided and arranged in an array on top of the manhole cover (201); The drainage gas component includes a rectangular through hole (401), a drainage plate (402), a water and gas groove (408), an arc plate (409), and a locking assembly. The rectangular through hole (401) is located on the top of the manhole cover (201), and the drainage plate (402) is inserted into the rectangular through hole (401) and locked and fixed by the locking assembly. Multiple water vapor channels (408) are arranged in an array on top of the drainage plate (402). The bottom opening of each water vapor channel (408) has concave arc-shaped sides. Multiple arc-shaped plates (409) are arranged, and a stabilizing column (412) is provided at the bottom of each arc-shaped plate (409). A fixing block (411) is provided on the bottom opening wall of the drainage plate (402), and the stabilizing column (412) passes through the fixing block (411). 1) Inside, a support spring (413) is sleeved on a stabilizing column (412) located between the top wall of the fixed block (411) and the bottom wall of the arc plate (409). Each arc plate (409) is located directly below the corresponding water vapor groove (408). The width of the arc plate (409) is wider than the groove opening of the water vapor groove (408), and a flow cavity (410) is formed between each arc plate (409) and the concave side wall of the bottom groove opening of the corresponding water vapor groove (408).

2. A municipal road manhole cover according to claim 1, characterized in that: The locking assembly includes a stabilizing groove (403) and a stabilizing block (405). The stabilizing groove (403) is provided on both opposite side walls of the rectangular through hole (401). The bottom of the stabilizing groove (403) is provided with a through hole (404). The stabilizing block (405) is provided on both opposite side walls of the drainage plate (402). The bottom of the stabilizing block (405) is provided with a screw (406). The stabilizing block (405) on the drainage plate (402) is locked in the stabilizing groove (403) on the rectangular through hole (401). The screw (406) passes through the through hole (404), and the bottom end of the screw (406) extends to the bottom of the through hole (404) and is threaded with a nut (407). The top wall of the nut (407) is in contact with the bottom wall of the manhole cover (201).

3. A municipal road manhole cover according to claim 1, characterized in that: Multiple slots (301) are arranged in an array on the inner top wall of the well ring (101). Each slot (301) has a stud (302) at the bottom. Multiple blocks (303) are arranged in an array on the top peripheral wall of the well cover (201). Each block (303) has a countersunk hole (304). The stud (302) passes through the countersunk hole (304). A nut (305) is screwed into the top of the stud (302). The nut (305) is located in the top countersunk hole of the countersunk hole (304), and the bottom wall of the nut (305) is in contact with the bottom of the top countersunk hole of the countersunk hole (304).

4. A municipal road manhole cover according to claim 1, characterized in that: Multiple filling grooves (102) are arrayed on the bottom outer peripheral wall of the well ring (101).

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