A safety protection device for a manhole

Abstract

The utility model relates to the technology field of inspection well protection, disclose a kind of safety protection device for inspection well, including anti-falling grid, the inside of the right side of anti-falling grid is provided with opening, and the inside of opening is provided with flap, the inside of flap is provided with mounting groove, and the inside of mounting groove is hinged with fixed foot. When the safety protection device for inspection well is installed in the inside of inspection well mouth and used, the well mouth can be closed and protected by the anti-falling grid and the flap. When it is necessary to enter the well for operation, the locking rod is rotated upward from the inside of the mounting hole after being correspondingly locked on the fixed plate at the top and bottom of the front end of the flap. Then, the flap can be unlocked inside the right side of the anti-falling grid. After that, the flap can be turned left to open. The opening can be used to directly enter the well for operation. The inspection well mouth can be protected conveniently. The problem of inconvenient protection of the inspection well mouth is solved.

Description

Technical Field

[0001] This utility model relates to the field of manhole protection technology, specifically a safety protection device for manholes. Background Technology

[0002] Manholes are well-shaped structures installed for the maintenance and repair of underground pipelines and are an important part of urban underground infrastructure. After the manhole is constructed and put into use, the manhole cover may be displaced or missing due to vehicle running over it, theft, or aging and loosening, resulting in the manhole opening being open. In order to protect the manhole opening from falling, some safety protection devices are needed.

[0003] However, in actual use, the safety protection devices for manholes are generally integrated structures installed inside the manhole opening to prevent falls. Although they can prevent falls, the integrated structure means that when personnel need to enter the manhole for work, the entire device must be disassembled and the inside of the manhole opened before they can enter to work. The whole process is very cumbersome and has shortcomings, making it inconvenient to use for manhole protection.

[0004] Now, a new type of safety protection device for manholes is proposed to address the above-mentioned shortcomings. Utility Model Content

[0005] The purpose of this utility model is to provide a safety protection device for manholes, so as to solve the problem mentioned in the background art of the inconvenience of protecting the manhole opening.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a safety protection device for manholes, including a fall-prevention grid, an opening inside the right side of the fall-prevention grid, a flap inside the opening, an installation groove inside the flap, and a fixing foot hinged inside the installation groove, installation holes being opened at the top and bottom of the right front side of the fall-prevention grid, fixing plates being welded and fixed at the top and bottom of the front end of the flap, and a locking rod being provided at the front end of the fixing plate.

[0007] As a further technical solution of this utility model, the right side of the fixed foot is fixedly connected to the left side of the flip plate, and the left side of the flip plate is hinged to the inside of the anti-fall grid plate through the fixed foot.

[0008] As a further technical solution of this utility model, handles are welded and fixed to the top and bottom of the right side inside the flip plate.

[0009] As a further technical solution of this utility model, the rear end of the locking rod passes through the interior of the fixing plate and is threadedly rotatably connected in the mounting hole.

[0010] As a further technical solution of this utility model, the front end of the anti-fall grid is provided with a mesh, and the top, bottom and both sides of the rear end of the mesh are respectively fixed with connecting rough surfaces, and the front ends of the anti-fall grid and the flip plate are respectively fixed with connecting barbed surfaces.

[0011] As a further technical solution of this utility model, the connecting spikes are distributed in three sets at equal intervals in a ring at the front end of the anti-fall grid.

[0012] As a further technical solution of this utility model, the inner sides of the top two sides and the inner sides of the bottom two sides of the anti-fall grid are respectively provided with inner holes, and the inner holes are fitted with mounting bolts, and the outer sides of the inner holes are provided with embedded sleeves.

[0013] As a further technical solution of this utility model, the mounting bolt penetrates the interior of the inner hole, and the interior of the pre-embedded sleeve is provided with an internal thread that mates with the outer thread of the mounting bolt.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the safety protection device for manholes not only facilitates the protection of the manhole opening and prevents foreign objects from entering the manhole, but also facilitates the quick installation of the manhole.

[0015] (1) By setting up anti-fall grid, mounting groove, mounting hole, flap, handle, fixing plate, fixing foot, opening and locking rod, the protective device is installed inside the manhole opening. When used, the anti-fall grid and flap can be used to assist in sealing the manhole opening and prevent falls. When it is necessary to enter the manhole for work, the locking rod is turned upward from the inside of the mounting hole on the fixing plate at the top and bottom of the flap front end, respectively. Then the flap can be unlocked inside the right side of the anti-fall grid. After that, the flap can be flipped to the left to open. The opening can be used to directly enter the manhole for work, which is convenient for the protection of the manhole opening.

[0016] (2) By setting up anti-fall grids, connecting barbed surfaces, flaps, mesh panels and connecting rough surfaces, when the device is installed inside the wellhead, the connecting rough surfaces of the mesh panel can be pasted and fixed to the connecting barbed surfaces corresponding to the connecting barbed surfaces at the front end of the anti-fall grids and flaps. Then the mesh panel can be installed at the front end of the device. The mesh panel can be used to cover and close the open area inside the device, isolate garbage and foreign objects, and reduce the amount of garbage and foreign objects that enter the well with rainwater on rainy days.

[0017] (3) By setting up pre-embedded sleeves, mounting bolts, inner holes and anti-fall grids, when installing the protective device, first pre-drill four sets of holes around the inside of the wellhead, and then drive the four sets of pre-embedded sleeves into the holes respectively. Then place the device inside the wellhead, and use four sets of mounting bolts to penetrate the inside of the anti-fall grids and screw them into the pre-embedded sleeves accordingly. Then the device can be quickly installed and fixed inside the wellhead. Attached Figure Description

[0018] Figure 1 This is a frontal cross-sectional view of the present invention.

[0019] Figure 2 This is a front view structural diagram of the anti-fall grid of this utility model;

[0020] Figure 3 This is a front view schematic diagram of the flip-plate structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the rear view structure of the mesh of this utility model.

[0022] In the diagram: 1. Embedded sleeve; 2. Mounting bolt; 3. Anti-fall grating; 4. Connecting barbed surface; 5. Mounting groove; 6. Mounting hole; 7. Flip plate; 8. Handle; 9. Fixing plate; 10. Mesh panel; 11. Inner hole; 12. Fixing foot; 13. Opening; 14. Locking rod; 15. Connecting rough surface. Detailed Implementation

[0023] 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.

[0024] Please see Figures 1-4 This utility model provides an embodiment: a safety protection device for manholes, including a fall-prevention grid 3, an opening 13 is provided inside the right side of the fall-prevention grid 3, and a flap 7 is provided inside the opening 13. An installation groove 5 is provided inside the flap 7, and a fixing foot 12 is hinged inside the installation groove 5. Installation holes 6 are respectively opened at the top and bottom of the front right side of the fall-prevention grid 3. A fixing plate 9 is respectively welded to the top and bottom of the front end of the flap 7, and a locking rod 14 is provided at the front end of the fixing plate 9.

[0025] The right side of the fixed foot 12 is fixedly connected to the left side of the flip plate 7. The left side of the flip plate 7 is hinged to the inside of the anti-fall grid plate 3 through the fixed foot 12. The top and bottom of the right side of the inside of the flip plate 7 are respectively welded and fixed with handles 8. The rear end of the locking rod 14 passes through the inside of the fixed plate 9 and is threadedly connected to the mounting hole 6.

[0026] Specifically, such as Figures 1-3As shown, when the protective device is installed inside the manhole, the fall arrestor 3 and the flap 7 can be used to help seal the manhole and prevent falls. When it is necessary to enter the manhole for work, the locking rod 14 is turned upward from the inside of the mounting hole 6 on the fixing plate 9 at the top and bottom of the front end of the flap 7, respectively. Then the flap 7 can be unlocked inside the right side of the fall arrestor 3. After that, the flap 7 can be flipped to the left to open, and the opening 13 can be used to directly enter the manhole for work.

[0027] The front end of the fall arresting grid 3 is provided with a mesh 10. The top, bottom and sides of the rear end of the mesh 10 are respectively fixed with connecting rough surfaces 15. The front ends of the fall arresting grid 3 and the flip plate 7 are respectively fixed with connecting barbed surfaces 4. There are three sets of connecting barbed surfaces 4 distributed in a ring at equal intervals at the front end of the fall arresting grid 3.

[0028] Specifically, such as Figures 1-4 As shown, the mesh 10 can be fixed by pasting the connecting rough surface 15 of the mesh 10 onto the corresponding connecting barbed surface 4 at the front end of the anti-fall grid plate 3 and the flip plate 7. The mesh 10 can then be installed at the front end of the device. The mesh 10 can be used to cover and close the open area inside the device, isolate garbage and foreign objects, and reduce the amount of garbage and foreign objects that enter the well with rainwater during rainy days.

[0029] The top two sides and the bottom two sides of the fall arresting grid 3 are respectively provided with inner holes 11, and the inner holes 11 are inserted with mounting bolts 2. The outer side of the inner holes 11 is provided with a pre-embedded sleeve 1. The mounting bolts 2 penetrate the inner holes 11. The pre-embedded sleeve 1 is provided with an internal thread that matches the outer thread of the mounting bolts 2.

[0030] Specifically, such as Figure 1 As shown, when installing the device, first, four sets of holes are pre-drilled around the inside of the wellhead, and four sets of pre-embedded sleeves 1 are driven into the holes. Then, the device is placed inside the wellhead, and four sets of mounting bolts 2 are used to penetrate the inside of the anti-fall grid plate 3 and screwed into the corresponding pre-embedded sleeves 1. The device can then be quickly installed and fixed inside the wellhead.

[0031] Working Principle: When installing this manhole safety protection device, first, four sets of holes are pre-drilled around the inside of the manhole, and four sets of pre-embedded sleeves 1 are driven into these holes. Then, the device is placed inside the manhole, and four sets of mounting bolts 2 are used to penetrate the anti-fall grid 3 and screwed into the pre-embedded sleeves 1, thus quickly installing and fixing the device inside the manhole. When the device is used inside the manhole, the anti-fall grid 3 and the flap 7 can assist in sealing the manhole and providing anti-fall protection. When it is necessary to enter the manhole for work, the locking rods 14 are screwed upwards from the mounting holes 6 on the fixing plates 9 at the top and bottom of the flap 7, respectively. This unlocks the flap 7 inside the right side of the anti-fall grid 3. The flap 7 can then be flipped to the left to open, allowing direct entry into the manhole for work.

[0032] Furthermore, when the device is installed inside the wellhead, after the front end of the mesh 10 is fixed by the connecting rough surface 15 and the connecting barbed surface 4, the mesh 10 can be used to cover and close the open area inside the device, thus isolating garbage and foreign objects.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A safety protection device for manholes, comprising a fall-prevention grid (3), characterized in that: The right side of the fall arresting grid (3) has an opening (13) inside, and a flap (7) is provided inside the opening (13). The flap (7) has an installation groove (5) inside, and a fixing foot (12) is hinged inside the installation groove (5). The top and bottom of the right front side of the fall arresting grid (3) are respectively provided with installation holes (6). The top and bottom of the front end of the flap (7) are respectively welded and fixed with fixing plates (9), and the front end of the fixing plate (9) is provided with a locking rod (14).

2. The safety protection device for manholes according to claim 1, characterized in that: The right side of the fixed foot (12) is fixedly connected to the left side of the flip plate (7), and the left side of the flip plate (7) is hinged to the inside of the anti-fall grid plate (3) through the fixed foot (12).

3. A safety protection device for manholes according to claim 1, characterized in that: Handles (8) are welded and fixed to the top and bottom of the right side inside the flap (7).

4. A safety protection device for manholes according to claim 1, characterized in that: The rear end of the locking rod (14) passes through the interior of the fixing plate (9) and is threadedly connected to the mounting hole (6).

5. A safety protection device for manholes according to claim 1, characterized in that: The front end of the fall arresting grid (3) is provided with a mesh (10), and the top, bottom and sides of the rear end of the mesh (10) are respectively fixed with connecting rough surfaces (15), and the front ends of the fall arresting grid (3) and the flip plate (7) are respectively fixed with connecting barbed surfaces (4).

6. A safety protection device for manholes according to claim 5, characterized in that: The connecting spikes (4) are distributed in three sets at equal intervals in a ring at the front end of the anti-fall grid (3).

7. A safety protection device for manholes according to claim 1, characterized in that: The anti-fall grid (3) has internal holes (11) on both sides of the top end and both sides of the bottom end, and mounting bolts (2) are inserted into the internal holes (11). A pre-embedded sleeve (1) is provided on the outside of the internal holes (11).

8. A safety protection device for manholes according to claim 7, characterized in that: The mounting bolt (2) penetrates the interior of the inner hole (11), and the interior of the pre-embedded sleeve (1) is provided with an internal thread that mates with the outer thread of the mounting bolt (2).

Images