CN219653761U - Inspection well anti-falling device - Google Patents

Abstract

The utility model relates to an inspection well anti-falling device which comprises an outer frame and at least one reinforcing rib in the outer frame, wherein the outer frame and the at least one reinforcing rib are integrally formed through injection molding, two ends of the reinforcing rib are fixed with two preset positions on the outer frame, a plurality of auxiliary ribs and a plurality of hollowed holes between the auxiliary ribs are formed in an area formed between the reinforcing rib and the outer frame, a plurality of connecting lugs are distributed on the outer edge of the outer frame, a metal plate is embedded in the reinforcing rib, and the metal plate extends in the reinforcing rib along the length direction of the reinforcing rib. The strength of the reinforcing ribs is improved by utilizing the metal plate, so that the safety of the device is improved.

Description

Inspection well anti-falling device

Technical Field

The utility model relates to an inspection well anti-falling device which is arranged in an inspection well and is used for preventing personnel from falling into the inspection well.

Background

The inspection well is an underground space for transfer and control of urban underground pipelines. The ground access is called a sand wellhead or an inspection well.

In cities, all public water supplies, sewage channels, telephone lines, fiber networks may be coupled through underground passages in the inspection pit. The inspection well is an outlet of the inspection well towards the ground, and is covered by an inspection well cover. The underground pipeline is mostly linear, and when the steering is needed, an inspection well is arranged at the steering position, so that the linear pipeline is not easy to block, and the pipeline is easy to install. In addition, for convenience and safety, inspection wells are provided in the middle of a certain length of pipeline to facilitate the entry and exit of the pipeline.

After the manhole cover is damaged or stolen, pedestrians can possibly fall off the manhole without the manhole cover, and in order to prevent the accident, an anti-falling net or an anti-falling plate can be arranged in the manhole.

The anti-falling net is soft and is woven by ropes or steel wires, such as the Chinese patent 'CN 103321251A' and 'CN 208586654U', and the service life or the strength of the anti-falling net is possibly insufficient, so that the safety is affected. The fall arrest plate is a rigid plate, usually made by injection moulding, as in chinese patents "CN217710872U", "CN211948571U", which has a prolonged service life with respect to the fall arrest net, but which is still lacking in strength and risks of ageing and failure.

Disclosure of Invention

The utility model aims to provide an inspection well anti-falling device which is approximately plate-shaped, and improves the strength and the safety.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an inspection well anti-falling device, which comprises an outer frame and at least one reinforcing rib in the outer frame, wherein the outer frame and the at least one reinforcing rib are integrally formed through injection molding, two ends of the reinforcing rib are fixed with two preset positions on the outer frame, a plurality of auxiliary ribs and a plurality of hollowed holes between the auxiliary ribs are formed in a satellite area formed between the reinforcing rib and the outer frame, a plurality of connecting lugs are distributed on the outer edge of the outer frame, a metal plate is embedded in the reinforcing rib, and the metal plate extends in the reinforcing rib along the length direction of the reinforcing rib.

Preferably, the metal plate extends to both sides of the extending direction in a plate shape, and the extending direction is consistent with the plane of the outer frame.

Preferably, both ends of the metal plate extend into the connecting lugs.

Preferably, the number of the reinforcing ribs is more than two, and the reinforcing ribs are intersected at the center of the outer frame.

Further, at least one auxiliary rib is fixed at the intersection point of the reinforcing ribs in each satellite area.

Further, the auxiliary rib fixed at the intersection point of the reinforcing ribs extends straight from the intersection point to the outer frame direction by at least a distance.

Further, at least one auxiliary rib in each satellite area is connected to the intersection point of the reinforcing rib and the outer frame.

Preferably, the width of the reinforcing rib is greater than the width of the auxiliary rib.

Preferably, the reinforcing rib, the auxiliary rib and the connecting lug each comprise a panel extending in the respective extending direction and side plates extending from edges of two sides of the extending direction of the panel to a direction perpendicular to the panel, and bone plates connecting the side plates on two sides of the reinforcing rib are further formed between the side plates.

Further, the outer end of the connecting lug is also provided with an end plate connected between the side plates at two sides, and one end of the end plate far away from the panel is provided with a groove recessed towards the direction of the panel.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the inspection well anti-falling device comprises the outer frame and the reinforcing ribs, wherein the outer frame and the reinforcing ribs form a protection surface to prevent pedestrians from falling into the inspection well, and the reinforcing ribs are embedded with the metal plates, so that the strength of the reinforcing ribs is obviously increased, and the reinforcing ribs are main stressed components after the pedestrians fall down, so that the reinforcing ribs are not easy to be broken by the falling pedestrians after the strength is increased, the pedestrians are prevented from continuously falling down, and the safety of the device is improved.

Drawings

Some specific embodiments of the utility model will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:

FIG. 1 is a schematic perspective view of a preferred embodiment of an inspection well fall arrest device of the present utility model;

FIG. 2 is another view of FIG. 1, showing a bottom surface configuration;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a bottom view of FIG. 1;

FIG. 5 is an enlarged view of a portion of FIG. 2 at A;

FIG. 6 is a B-B cross-sectional view of FIG. 3;

FIG. 7 is an enlarged view of a portion of FIG. 6 at C;

fig. 8 is a schematic view of the structure of a metal plate (integral);

fig. 9 is a schematic view of the structure of a metal plate (welded);

FIG. 10 is a schematic view of the preferred embodiment of the present utility model installed in an inspection well;

FIG. 11 is a schematic view of the connection lugs to the connection ring;

wherein reference numerals are as follows:

1. an outer frame; 2. reinforcing ribs; 3. a satellite region; 4. auxiliary ribs; 41. a first connecting rod; 42. a second connecting rod; 5. a connecting lug; 51. a fixing hole; 6. a metal plate; 61. a through hole; 7. a panel; 8. a side plate; 9. a bone plate; 10. an end plate; 101. a groove; 11. thickening the ribs; 12. an inspection well cover; 13. scenting the well wall; 14. a connecting piece; 141. fixing the column; 142. and a connecting ring.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

The inspection well anti-falling device shown in fig. 1 is installed in an inspection well and is located below an inspection well cover 12 (see fig. 10) for preventing pedestrians from falling. The inspection well anti-falling device is made by injection molding. The structure and fabrication method thereof are described below.

As shown in fig. 1, the inspection well anti-falling device comprises an outer frame 1 and two reinforcing ribs 2, and is integrally formed by injection molding. The outer frame 1 is circular, and two reinforcing ribs 2 are arranged in the outer frame 1 in a crisscross manner. Two ends of each reinforcing rib 2 are connected to two parts, which are far away from each other, on the outer frame 1, and the connection is realized through injection molding. In this example, each reinforcing bar 2 passes through the center of the circular outer frame 1. The two reinforcing bars 2 have an intersection point at the center of the outer frame 1.

Four satellite areas 3 are formed between the two reinforcing ribs 2 and the outer frame 1, and one of the satellite areas 3 is marked by a broken line in fig. 1. There are four satellite regions 3 in total, and the four satellite regions 3 are distributed rotationally symmetrically around the center of the casing 1. A plurality of auxiliary ribs 4 are arranged in each satellite area 3, the auxiliary ribs 4 are connected with each other to form a grid shape, and a plurality of hollowed holes are formed among the auxiliary ribs 4. The hollow holes are used for rainwater and sand to fall down. The reinforcing bars 2, the auxiliary bars 4 and the outer frame 1 are almost on one plane to form a planar supporting surface.

The auxiliary rib 4 is provided with a first connecting rod 41, the first connecting rod 41 extends linearly from the intersection point of the reinforcing ribs 2 to the direction of the outer frame 1 for a certain distance, and the length of the first connecting rod 41 occupies about 1/3 of the inner diameter of the outer frame 1. When a pedestrian falls on the upper surface of the device, the main stress point is likely to be the center of the outer frame 1, namely the intersection point of the two reinforcing ribs 2, and the pedestrian impacts the intersection point downwards (approximately downwards in fig. 1), and at this time, the stress direction of the first connecting rod 41 is the radial direction from the intersection point of the reinforcing ribs 2 to the outer frame 1, and the stress direction is consistent with the extending direction of the first connecting rod 41, so that the first connecting rod 41 can bear larger tensile force and is not easy to break, thereby improving the safety of the device.

Although the first connecting rod 41 extends linearly in this example, in other embodiments, the first connecting rod 41 may extend in a curved manner from the intersection point of the two reinforcing ribs 2 toward the outer frame 1. But the linear extension can put the first connecting rod 41 under a large stress.

The auxiliary rib 4 is further provided with a second connecting rod 42, and one end of the second connecting rod 42 is connected to the intersection point of the reinforcing rib 2 and the outer frame 1, namely, the point indicated by D in fig. 1. In this example, two second connection rods 42 are respectively connected to the intersection points of the reinforcing ribs 2 and the outer frame 1 in each satellite region 3, that is, two points indicated by D, E in fig. 1. Thus, when the satellite region 3 receives downward impact force, such as a foot pedal of a pedestrian in the satellite region 3, since the first connecting rod 41 is connected to the intersection point position of the two reinforcing ribs 2, the two second connecting rods 42 are respectively connected to the intersection point position of the reinforcing ribs 2 and the outer frame 1, and the three intersection point positions have larger strength and are not easy to shift, and the first connecting rod 41 and the second connecting rods 42 are not easy to break due to the fact that the stress direction is consistent with the extending direction of the first connecting rod and the second connecting rods 42, so that grids formed by the auxiliary ribs 4 in the single satellite region 3 have larger strength and are not easy to collapse due to the downward impact force, and safety is improved.

In this example, the two second connecting rods 42 are connected to the intersection points of the two reinforcing ribs 2 and the outer frame 1, i.e., the point indicated by D, E in fig. 1. However, a second connecting rod 42 may be used, so that two ends of the second connecting rod 42 are respectively connected to D, E.

In this example, the width of the reinforcing rib 2 is larger than the width of the auxiliary rib 4, or the width of the auxiliary rib 4 is smaller than the width of the reinforcing rib 2. And the width of the outer frame 1 is the same as the width of the reinforcing bars 2. The reinforcing ribs 2 are arranged in the outer frame 1 in a crisscross manner, so that the reinforcing ribs 2 and the outer frame 1 are main bearing components. And the reduction of the width of the auxiliary ribs 4 is beneficial to reducing the weight of the whole device and saving injection molding materials so as to have economy.

The outer edge of the outer frame 1 is provided with four connection lugs 5, the connection lugs 5 being intended for connection with the manhole wall 13 (see fig. 10). The connecting lugs 5 and the outer frame 1 are integrally formed by injection molding.

In fig. 1, the connecting lug 5 is provided with a fixing hole 51. The outer end of the connection lug 5 is provided with an end plate 10 to improve the strength of the connection lug 5. The end plate 10 is provided with a groove 101, and the groove 101 extends upwards from the lower end.

Fig. 3, 6 and 7, wherein fig. 6 is a sectional view of B-B of fig. 3, and fig. 7 is a partially enlarged view of C of fig. 6, and three views show that the reinforcing bars 2 are embedded with metal plates 6. The metal plate 6 is an a-shaped steel having a thickness of 5mm, and is horizontally extended in a plate shape to both sides in the extending direction of the metal plate 6, the extending direction is in agreement with the plane of the outer frame 1, and the metal plate 6 extending to both sides has a greater strength.

As shown in the schematic plan view of fig. 8, the metal plate 6 is cross-shaped, is integrated, and is punched from a single piece of steel plate.

As shown in the schematic top view of fig. 9, the two metal plates 6 are welded together, and F is two welds in the figure. In fig. 9, the vertical metal plate 6 is an integral piece, while the horizontal metal plate 6 is formed of two separate parts, which are welded to both sides of the vertical metal plate 6, respectively, and the welded portion is an F line.

The crisscross metal plates 6 in fig. 8 and 9 are prefabricated before injection molding, are placed in an injection mold during injection molding, and are wrapped around the metal plates 6 during injection molding, so that the reinforcing ribs 2 are finally formed.

The metal plate 6 can significantly improve the strength of the reinforcing bars 2, thereby improving the safety of the apparatus.

The outer ends of the metal plates 6 extend all the way to the connecting lugs 5, as shown in fig. 7 and 5. The outer end of the metal plate 6 is provided with a through hole 61 communicating with the fixing hole 51. When the connecting lugs 5 are attached to the manhole wall 13, as shown in fig. 11, the connecting ring 142 passes through the fixing holes 51 and the through holes 61. The metal plate 6 is also connected to the connection ring 142. This can increase the safety of the device. Since the two metal plates 6 crossing each other can still function to prevent the pedestrian from falling after the plastic part of the reinforcing bar 2 is aged or broken unexpectedly.

As shown in fig. 11, the recess 101 formed in the end plate 10 can receive a connecting ring 142 to limit device wobble. And the top surface of the groove 101 is rounded so as to reduce wear on the connection ring 142.

As shown in the bottom view of the device in fig. 2 and 4, the outer frame 1, the ribs 2 and the connecting lugs 5 each include a panel 7 extending in the respective extending directions (the panel 7 in this example is horizontally extending) and side plates 8 extending downward (or may extend upward) from both side edges of the extending direction of the panel 7 in a direction perpendicular to the panel 7. Therefore, the bottoms of the outer frame 1, the reinforcing ribs 2 and the connecting lugs 5 are hollowed out, and the weight of the device is reduced. While the side plates 8 ensure the strength of the device.

A plurality of bone plates 9 are also arranged between the side plates 8 on both sides of the reinforcing rib 2, and the bone plates 9 are distributed in the length direction of the reinforcing rib 2. The bone plate 9 is connected to the side plates 8 on both sides, and the top end of the bone plate 9 is connected to the face plate 7. The bone plate 9 further increases the strength of the reinforcing bars 2.

As shown in fig. 5, the connection between the panel 7 and the side plates 8 on both sides is provided with a thickened rib 11, and the thickened rib 11 is located in the space between the side plates 8 on both sides and below the panel 7. The thickened ribs 11 further increase the strength of the reinforcing ribs 2, thereby improving the safety of the device.

In this example, although there are two reinforcing ribs 2, in other embodiments, only one reinforcing rib may be provided, or three or more reinforcing ribs (including three reinforcing ribs) may be provided. When there are a plurality of reinforcing ribs 2, the intersection points of the reinforcing ribs 2 may pass through the center of the outer frame 1 or may not pass through the center of the outer frame 1.

The inspection well anti-falling device of the example is manufactured by the following manufacturing method (an injection mold is manufactured according to the shape of the inspection well anti-falling device):

s1, placing a prefabricated cross-shaped metal plate in a die;

s2, uniformly mixing 70% PE, 30% PP, a compatibilizer and the like to form a PP/PE mixture, and adding the PP/PE mixture into an injection molding machine;

s3, high-temperature dissolution, compression and molding are carried out through an injection molding machine.

Referring to fig. 10, the inspection well anti-drop device of this example is connected to the inspection well wall 13 through a connecting member 14. The connection member 14 includes a fixing post 141 and a connection ring 142. The fixing post 141 is horizontally inserted into the manhole wall 13 and is fixed by cement or expansion bolts, the connecting ring 142 is connected (fixed or not) with the fixing post 141, the connecting ring 142 encloses the connecting lug 5, specifically as shown in fig. 11, the connecting ring 142 is inserted into the fixing hole 51, and the fixing hole 51 penetrates the panel 7 on the connecting lug 5. Thus, the inspection well anti-falling device can be installed in the inspection well. In order to remove the inspection well anti-falling device, the connecting ring 142 is only required to be separated from the fixing hole 51.

Compared with the existing protection device, the inspection well anti-falling device has the advantages of optimized structure, strong plasticity, stable chemical property, simple installation, convenient and quick well cover opening, strong bearing capacity, durability, scratch resistance, wear resistance, very high compression resistance, bending resistance and impact resistance, toughness, long service life, double protection by a cross metal plate and an injection molding plate and safety performance improvement. As the last safety barrier of pedestrians, the device plays a powerful role in protecting pedestrians falling from the foot drop well, and serious injury can not be caused even if the pedestrians fall into the safety barrier carelessly.

The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.

Claims (10)

1. The utility model provides an inspection shaft anti-falling device, it includes through at least one strengthening rib in injection moulding's frame and the frame, the both ends of strengthening rib (2) with set for two positions on frame (1) and fix mutually, strengthening rib (2) with be formed with a plurality of auxiliary ribs (4) and a plurality of fretwork holes between auxiliary ribs (4) in region (3) that form between frame (1), the outer fringe distribution of frame (1) has a plurality of engaging lugs (5), its characterized in that: the reinforcing rib (2) is internally embedded with a metal plate (6), and the metal plate (6) extends along the length direction of the reinforcing rib (2) in the reinforcing rib (2).

2. The inspection well fall protection device according to claim 1, wherein: the metal plate (6) extends to both sides of the extending direction to be plate-shaped, and the extending direction is consistent with the plane of the outer frame (1).

3. The inspection well fall protection device according to claim 1, wherein: both ends of the metal plate (6) extend into the connecting lugs (5).

4. The inspection well fall protection device according to claim 1, wherein: more than two reinforcing ribs (2) are arranged, and the reinforcing ribs (2) are intersected at the center of the outer frame (1).

5. The inspection well fall protection device according to claim 4, wherein: at least one auxiliary rib (4) in each region (3) is fixed at the intersection point of the reinforcing ribs (2).

6. The inspection well fall arrest device according to claim 5, wherein: the auxiliary rib (4) fixed at the intersection point position of the reinforcing rib (2) extends at least a distance from the intersection point position to the direction of the outer frame (1) in a straight line.

7. The inspection well fall arrest device according to claim 5, wherein: at least one auxiliary rib (4) in each region (3) is connected to the intersection point of the reinforcing rib (2) and the outer frame (1).

8. The inspection well fall protection device according to claim 1, wherein: the width of the reinforcing rib (2) is larger than that of the auxiliary rib (4).

9. The inspection well fall protection device according to claim 1, wherein: the reinforcing rib (2), the auxiliary rib (4) and the connecting lug (5) comprise panels (7) extending in respective extending directions and side plates (8) extending from two side edges of the extending directions of the panels (7) to directions perpendicular to the panels (7), and bone plates (9) connected with the side plates (8) at two sides are further formed between the side plates (8) at two sides of the reinforcing rib (2).

10. The inspection well fall protection device according to claim 9, wherein: the outer end of the connecting lug (5) is also provided with an end plate (10) connected between the side plates (8) at two sides, and one end of the end plate (10) far away from the panel (7) is provided with a groove (101) recessed towards the panel (7).