Nodular cast iron well lid with anti-falling net

Abstract

The utility model relates to the technical field of well lids, in particular to a nodular cast iron well lid with an anti-falling net, which comprises a base and a well lid, the well lid is rotatably connected onto the base, an inner ring is integrally formed on the inner side of the base, a support ring is arranged in the base, the anti-falling net is fixed in the support ring, and a plurality of insertion blocks are integrally formed at the top end of the support ring. A connecting block is fixed to the top end of the supporting ring, a shell is integrally formed at the top end of the connecting block, a clamping block is arranged in the shell, a vertical rod is fixed to the top end of the clamping block, and a spring is arranged on the vertical rod in a sleeving mode; slots matched with the clamping blocks are formed in the connecting blocks and the inner ring; the vertical rods are pulled, the clamping blocks are disengaged from the inner ring, the supporting ring is rotated, the multiple insertion blocks are disengaged from the multiple check blocks, and the supporting ring and the anti-falling net are conveniently detached.

Description

Technical Field

[0001] The utility model relates to the technical field of manhole covers, in particular to a ductile iron manhole cover with an anti-falling net. Background Technique

[0002] There are many underground pipelines in urban construction, such as sewer pipes, underground gas pipes, tap water pipes, power pipes, communication pipes, national defense pipes, etc. There should be an outlet leading to the ground at regular intervals for these pipes. The section from the pipe to the ground is called a manhole. The manhole opening is usually flush with the ground. Therefore, a lid is needed to cover the manhole, and the lid is called a manhole cover. Manhole covers are usually made of reinforced cement, metal, reinforced plastic and other materials, and the shapes are mainly circular and square. On the manhole cover, the uses of the underground pipelines, the maintenance units and telephone numbers and other information are generally indicated. In order to prevent pedestrians from falling, manhole covers with anti-falling nets are usually used. After the anti-falling net is installed, if construction workers need to go down into the manhole to work, they need to remove the hooks on the anti-falling net one by one to remove the anti-falling net. When installing the anti-falling net, the hooks need to be hung one by one, which is time-consuming. Therefore, a ductile iron manhole cover with an anti-falling net is proposed to facilitate the disassembly and subsequent installation of the anti-falling net. Content of the Utility Model

[0003] Aiming at the problems in the prior art, the utility model provides a ductile iron manhole cover with an anti-falling net.

[0004] The technical solution adopted by the utility model to solve its technical problems is a ductile iron manhole cover with an anti-falling net, which includes a base and a manhole cover. The manhole cover is rotatably connected to the base. An inner ring is integrally formed on the inner side of the base. A support ring is arranged in the base. An anti-falling net is fixed in the support ring. A plurality of insertion blocks are integrally formed at the top of the support ring. A plurality of blocking blocks are integrally formed on the inner side of the inner ring. Slots for the ends of the insertion blocks to be inserted are arranged on the plurality of blocking blocks. A connecting block is fixed at the top of the support ring. A shell is integrally formed at the top of the connecting block. A clamping block is arranged in the shell. A vertical rod is fixed at the top of the clamping block. A spring is sleeved on the vertical rod. The top of the vertical rod penetrates through the shell. Slots adapted to the clamping block are arranged on both the connecting block and the inner ring.

[0005] By adopting the above technical solution, the inner ring can support the insertion block and the connecting block. Pull the vertical rod, the vertical rod drives the clamping block to move upward, the clamping block disengages from the inner ring, rotate the support ring, and the plurality of insertion blocks rotate accordingly. The plurality of insertion blocks disengage from the plurality of blocking blocks, which is convenient for removing the support ring and the anti-falling net. During installation, lift the vertical rod, place the support ring in the base and rotate it. After the plurality of insertion blocks are inserted into the plurality of blocking blocks, release the vertical rod, and the spring pushes the clamping block downward. The clamping block is inserted into the slot on the inner ring, which can prevent the support ring from rotating and is convenient for installing the support ring and the anti-falling net.

[0006] Specifically, a flange is integrally formed on the outer side of the base, and a plurality of through grooves are formed in the flange.

[0007] By adopting the above technical solution, the arrangement of the flange and the through grooves facilitates the installation of the base.

[0008] Specifically, a plurality of reinforcing blocks are fixed to the top end of the flange, and the side walls of the plurality of reinforcing blocks close to the base are all connected to the base.

[0009] By adopting the above technical solution, the arrangement of the reinforcing blocks can improve the stability of the flange.

[0010] Specifically, a limiting block is fixed to the top end of the vertical rod.

[0011] By adopting the above technical solution, holding the limiting block facilitates pulling the vertical rod.

[0012] Specifically, two handles are fixed to the top end of the support ring.

[0013] By adopting the above technical solution, holding the handles facilitates the taking and placing of the support ring.

[0014] The beneficial effects of the present utility model:

[0015] (1) For the ductile iron manhole cover with a fall prevention net of the present utility model, the inner ring can support the insertion block and the connection block. Pull the vertical rod, and the vertical rod drives the clamping block to move upward, and the clamping block disengages from the inner ring. Rotate the support ring, and the plurality of insertion blocks rotate accordingly, and the plurality of insertion blocks disengage from the plurality of blocking blocks, which facilitates the removal of the support ring and the fall prevention net. During installation, lift the vertical rod, place the support ring in the base and then rotate it. After the plurality of insertion blocks are inserted into the plurality of blocking blocks, release the vertical rod, and the spring pushes the clamping block downward, and the clamping block is inserted into the slot on the inner ring, which can prevent the support ring from rotating and facilitates the installation of the support ring and the fall prevention net.

[0016] (2) For the ductile iron manhole cover with a fall prevention net of the present utility model, holding the limiting block facilitates pulling the vertical rod, and holding the handle facilitates the taking and placing of the support ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present utility model will be further described below with reference to the drawings and embodiments.

[0018] Figure 1 is a structural schematic diagram of the present utility model;

[0019] Figure 2 is the Figure 1 enlarged view of the structure at A in;

[0020] Figure 3 is a sectional view of the connection block of the present utility model.

[0021] In the figure: 1, base; 2, manhole cover; 3, inner ring; 4, support ring; 5, anti-falling net; 6, flange; 7, reinforcement block; 8, stop block; 9, insertion block; 10, connection block; 11, handle; 12, housing; 13, vertical rod; 14, clamping block; 15, spring; 16, limit block. Specific embodiments

[0022] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] For the convenience of disassembly and subsequent installation, as an embodiment of the present utility model, as Figure 1 , Figure 2 , Figure 3 shown, a ductile iron manhole cover with an anti-falling net described in the present utility model includes a base 1 and a manhole cover 2. The manhole cover 2 is rotatably connected to the base 1. An inner ring 3 is integrally formed inside the base 1. A support ring 4 is provided inside the base 1. An anti-falling net 5 is welded and fixed inside the support ring 4. A plurality of insertion blocks 9 are integrally formed at the top of the support ring 4. A plurality of stop blocks 8 are integrally formed inside the inner ring 3. Slots for the ends of the insertion blocks 9 to be inserted are provided on each of the plurality of stop blocks 8. A connection block 10 is welded and fixed at the top of the support ring 4. A housing 12 is integrally formed at the top of the connection block 10. A clamping block 14 is provided inside the housing 12. A vertical rod 13 is welded and fixed at the top of the clamping block 14. A spring 15 is sleeved on the vertical rod 13. The top of the vertical rod 13 penetrates through the housing 12. Slots adapted to the clamping block 14 are provided on both the connection block 10 and the inner ring 3.

[0024] During use, the inner ring 3 can support the insertion blocks 9 and the connection block 10. Pull the vertical rod 13, and the vertical rod 13 drives the clamping block 14 to move upward. The clamping block 14 disengages from the inner ring 3. Rotate the support ring 4, and the plurality of insertion blocks 9 rotate accordingly. The plurality of insertion blocks 9 disengage from the plurality of stop blocks 8, facilitating the removal of the support ring 4 and the anti-falling net 5. During installation, lift the vertical rod 13, place the support ring 4 in the base 1 and rotate it. After the plurality of insertion blocks 9 are inserted into the plurality of stop blocks 8, release the vertical rod 13. The spring 15 pushes the clamping block 14 downward, and the clamping block 14 is inserted into the slot on the inner ring 3, which can prevent the support ring 4 from rotating and facilitate the installation of the support ring 4 and the anti-falling net 5.

[0025] For the convenience of installing the base 1, by way of example, as Figure 1 shown, a flange 6 is integrally formed on the outer side of the base 1, and a plurality of through grooves are formed in the flange 6.

[0026] For improving the stability of the flange 6, by way of example, as Figure 1As shown, a plurality of reinforcing blocks 7 are fixedly welded to the top end of the flange 6, and the side walls of the plurality of reinforcing blocks 7 close to the base 1 are all welded to the base 1.

[0027] For the convenience of pulling the vertical rod 13, by way of example, as Figure 3 shown, a limit block 16 is fixedly welded to the top end of the vertical rod 13.

[0028] During use, hold the limit block 16 by hand to facilitate pulling the vertical rod 13.

[0029] For the convenience of taking and placing the support ring 4, by way of example, as Figure 2 shown, two handles 11 are fixedly welded to the top end of the support ring 4.

[0030] During use, hold the two handles 11 by hand to facilitate taking and placing the support ring 4.

[0031] When the present utility model is in use, the inner ring 3 can support the insertion block 9 and the connection block 10, and the anti-falling net 5 can prevent pedestrians from falling. Pull the limit block 16 at the top end of the vertical rod 13, and the vertical rod 13 drives the clamping block 14 to move upward, and the clamping block 14 disengages from the inner ring 3. Rotate the support ring 4, and the plurality of insertion blocks 9 rotate accordingly, and the plurality of insertion blocks 9 disengage from the plurality of stoppers 8. Hold the two handles 11 by hand to facilitate the removal of the support ring 4 and the anti-falling net 5;

[0032] During installation, hold the limit block 16 and lift the vertical rod 13. After placing the support ring 4 in the base 1 and rotating it, after the plurality of insertion blocks 9 are inserted into the plurality of stoppers 8, release the limit block 16, and the spring 15 pushes the clamping block 14 to move downward, and the clamping block 14 is inserted into the slot on the inner ring 3, which can prevent the support ring 4 from rotating and facilitate the installation of the support ring 4 and the anti-falling net 5.

[0033] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of protection required by the present utility model. The scope of protection required by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A ductile iron manhole cover with a fall prevention net, characterized in that, It includes a base (1) and a manhole cover (2). The manhole cover (2) is rotatably connected to the base (1). An inner ring (3) is integrally formed on the inner side of the base (1). A support ring (4) is provided inside the base (1). An anti-fall net (5) is fixed inside the support ring (4). A plurality of insertion blocks (9) are integrally formed at the top of the support ring (4). A plurality of stop blocks (8) are integrally formed on the inner side of the inner ring (3). Slots for the ends of the insertion blocks (9) to be inserted are provided on each of the plurality of stop blocks (8). A connection block (10) is fixed to the top of the support ring (4). A housing (12) is integrally formed at the top of the connection block (10). A clamping block (14) is provided inside the housing (12). A vertical rod (13) is fixed to the top of the clamping block (14). A spring (15) is sleeved on the vertical rod (13). The top of the vertical rod (13) penetrates through the housing (12). Slots adapted to the clamping block (14) are provided on both the connection block (10) and the inner ring (3).

2. The ductile iron manhole cover with a fall prevention net according to claim 1, characterized in that, A flange (6) is integrally formed on the outer side of the base (1). A plurality of through grooves are formed in the flange (6).

3. The ductile iron manhole cover with a fall prevention net according to claim 2, characterized in that, A plurality of reinforcing blocks (7) are fixed to the top of the flange (6). The side walls of the plurality of reinforcing blocks (7) close to the base (1) are all connected to the base (1).

4. A ductile iron manhole cover with a fall prevention net according to claim 1, characterized in that, A limit block (16) is fixed to the top of the vertical rod (13).

5. The ductile iron manhole cover with a fall prevention net according to claim 1, characterized in that, Two handles (11) are fixed to the top of the support ring (4).

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