阅读说明：本技术 井盖 (Well cover ) 是由 吴志勇 杨灵洁 崔海龙 王燕红 于 2021-08-05 设计创作，主要内容包括：本发明为一种井盖,用于设在人孔上,井盖包括能开合地设在人孔的顶口处的盖板,盖板具有能封堵人孔的第一工作位置以及能打开人孔的第二工作位置。在盖板的背面设有能伸缩的安全扶手,当盖板处于第一工作位置时,盖板的背面朝向人孔设置,安全扶手处于缩回位置并能伸入人孔内。当盖板处于第二工作位置时,安全扶手能处于伸出位置,且安全扶手能与人孔内设置的爬梯位于同一侧,并位于爬梯的上方。本发明的井盖增加了扶手功能,能够辅助人员上下攀爬,安全方便。(The invention relates to a manhole cover which is arranged on a manhole and comprises a cover plate which can be arranged at the top of the manhole in an opening and closing mode, wherein the cover plate is provided with a first working position capable of plugging the manhole and a second working position capable of opening the manhole. The back of the cover plate is provided with a telescopic safety handrail, when the cover plate is positioned at a first working position, the back of the cover plate faces the manhole, and the safety handrail is positioned at a retraction position and can stretch into the manhole. When the cover plate is located at the second working position, the safety handrail can be located at the extending position, and the safety handrail can be located on the same side with the crawling ladder arranged in the manhole and located above the crawling ladder. The well lid provided by the invention has the advantages that the handrail function is added, the personnel can be assisted to climb up and down, and the safety and convenience are realized.)

1. A manhole cover for being arranged on a manhole, comprising a cover plate openably and closably arranged at a top of the manhole, the cover plate having a first operating position in which the manhole can be plugged and a second operating position in which the manhole can be opened, characterized in that,

the back surface of the cover plate is provided with a telescopic safety handrail, when the cover plate is positioned at the first working position, the back surface of the cover plate faces the manhole, and the safety handrail is positioned at a retraction position and can extend into the manhole; when the cover plate is located at the second working position, the safety handrail can be located at the extending position, and the safety handrail and the ladder stand arranged in the manhole can be located on the same side and located above the ladder stand.

2. The well lid of claim 1,

the top opening of the manhole is provided with a water retaining platform, and the cover plate is arranged on the water retaining platform.

3. The well lid of claim 2,

the cover plate is connected with the water retaining platform through a rotating shaft and can be turned over by 180 degrees, and the rotating shaft and the crawling ladder are positioned on the same side; when the cover plate is located at the second working position, the front face of the cover plate faces the water retaining table and can be attached to the table top of the water retaining table.

4. The well lid of claim 3,

the safety handrail comprises a connecting rod and a handrail rod which are connected with each other, and the connecting rod can be arranged on the back of the cover plate in a telescopic manner; when the cover plate is located at the first working position, the connecting rod retracts to the range of the cover plate, and the grab rail extends into the manhole; when the cover plate is located at the second working position, the connecting rod extends out of the cover plate, and the grab bar is located above the ladder stand.

5. The well lid of claim 4,

the connecting rod with bar mutually perpendicular sets up, and the axis of connecting rod perpendicular to the axis of pivot, the axis of bar perpendicular to the face of apron.

6. The well lid of claim 1,

and a driving device is arranged on the back surface of the cover plate, is connected with the safety handrail and can drive the safety handrail to move in a telescopic manner.

7. The well lid of claim 6,

the driving device is a directional electronic hydraulic telescopic device or a directional electronic pneumatic telescopic device.

8. The well lid of claim 6,

the shell of the driving device is fixedly connected with the back surface of the cover plate, and the piston rod of the driving device is fixedly connected with the safety handrail.

9. The well lid of claim 1,

the back of the cover plate is provided with two groups of safety handrails which are arranged at intervals, and the distance between the two groups of safety handrails is larger than the width of the ladder stand.

10. The well lid of claim 1,

the manhole is a square hole, and the cover plate is a square plate body.

Technical Field

The invention relates to the technical field of well lids, in particular to a well lid.

Background

In recent years, particularly in 2015 years, in order to better ensure the safety of municipal pipelines and reduce the appearance of 'road zippers' for repeatedly excavating roads, underground comprehensive pipe galleries are built in all big cities. Besides the corridor of the main body, the underground pipe gallery also has functional nodes serving the pipe gallery, and the functional nodes are generally divided into two layers or three layers. Except that few nodes set up special pavement, for saving piping lane occupation of land space, generally all rely on manhole and cat ladder to carry out the upper and lower between the layer. For example, as shown in fig. 1, a two-layer structure of the ventilation shaft is shown, and the gas cabin first layer 011 and the gas cabin second layer 012, the water cabin first layer 021 and the water cabin second layer 022, the water tank first layer 031 and the water cabin second layer 032, and the electric cabin first layer 041 and the electric cabin second layer 042 are vertically arranged in layers by matching with a ladder through a manhole 05.

As shown in fig. 2, the existing pipe gallery manhole 05 is provided with a ladder stand 07 separated from a cover plate 06, the ladder stand 07 (such as a steel ladder stand or a flexible ladder stand) is arranged on one side of the pipe gallery opening, a manual or intelligent cover plate is arranged on the top of the manhole 05 for opening, a person goes up and down between two layers through the ladder stand 07, and the ladder stand 07 extends from the bottom layer to the position below the upper edge of the manhole 05.

However, this structure has the following disadvantages:

1) due to the requirement of covering the cover plate 06, the crawling ladder 07 cannot extend out of the top opening of the manhole 05, and workers need to take the water blocking table 051 to climb upwards when going out of the manhole 05 upwards, so that the operation is very inconvenient; because the manhole 05 is generally provided with the water retaining table 051, the installation and fixing handrail can only be arranged outside the cover plate 06 and the water retaining table 051, is far away from personnel and is inconvenient to use. 2) If a fixed armrest is installed, the presence of the armrest after the cover 06 is closed may affect the carrying or movement of certain temporary equipment by workers to some extent. 3) Manhole 05 is typically large, typically 1.0 x 1.0m in size, and there is a risk that a person falling into manhole 05 will not have a secure handrail and will fall directly into the underlying layer.

In the actual use, current manhole cover board and cat ladder set up can cause certain inconvenience and have great potential safety hazard to staff's upper and lower, need look for a method and improve convenience and the security about staff.

Therefore, the inventor provides the well lid by virtue of experience and practice of related industries for many years so as to overcome the defects in the prior art.

Disclosure of Invention

The invention aims to provide a well lid, which is safe and convenient, is added with a handrail function, and can assist personnel to climb up and down.

The invention aims to realize that the well cover is arranged on a manhole, the well cover comprises a cover plate which can be arranged at the top of the manhole in an opening and closing mode, the cover plate is provided with a first working position capable of blocking the manhole and a second working position capable of opening the manhole, a telescopic safety handrail is arranged on the back surface of the cover plate, when the cover plate is positioned at the first working position, the back surface of the cover plate faces the manhole, and the safety handrail is positioned at a retraction position and can extend into the manhole; when the cover plate is located at the second working position, the safety handrail can be located at the extending position, and the safety handrail can be located on the same side with the crawling ladder arranged in the manhole and located above the crawling ladder.

In a preferred embodiment of the present invention, a water stop is provided at the top opening of the manhole, and a cover plate is provided on the water stop.

In a preferred embodiment of the invention, the cover plate is connected with the water retaining platform through a rotating shaft and can realize 180-degree overturning, and the rotating shaft and the ladder stand are positioned on the same side; when the cover plate is positioned at the second working position, the front surface of the cover plate faces the water retaining table and can be attached to the table surface of the water retaining table.

In a preferred embodiment of the present invention, the safety handle comprises a connecting rod and a handle bar connected to each other, the connecting rod being telescopically provided at the back of the cover plate; when the cover plate is positioned at the first working position, the connecting rod retracts to the range of the cover plate, and the grab bar extends into the manhole; when the cover plate is in the second working position, the connecting rod extends out of the cover plate, and the grab bar is positioned above the ladder stand.

In a preferred embodiment of the present invention, the connecting rod and the grab bar are disposed perpendicular to each other, and the axis of the connecting rod is perpendicular to the axis of the rotating shaft, and the axis of the grab bar is perpendicular to the panel surface of the cover plate.

In a preferred embodiment of the present invention, a driving device is disposed on the back of the cover plate, and the driving device is connected to the safety handle and can drive the safety handle to move in a telescopic manner.

In a preferred embodiment of the present invention, the driving device is a directional electro-hydraulic telescopic device or a directional electro-pneumatic telescopic device.

In a preferred embodiment of the present invention, the housing of the driving device is fixedly connected to the back surface of the cover plate, and the piston rod of the driving device is fixedly connected to the safety handle.

In a preferred embodiment of the present invention, two sets of safety handrails are disposed on the back surface of the cover plate at intervals, and the distance between the two sets of safety handrails is greater than the width of the ladder.

In a preferred embodiment of the present invention, the manhole is a square hole, and the cover plate is a square plate.

According to the manhole cover, the telescopic safety handrail is additionally arranged on the back of the manhole cover, when the cover plate is opened, the safety handrail can extend out and is positioned above the crawling ladder, so that personnel can be better assisted to climb, the problem that workers are inconvenient to climb in the process of going up and down a manhole is solved, and the up-and-down safety is improved; meanwhile, the safety handrail can be hidden after the cover plate is closed, and the space utilization rate of the underground interior is increased. Whole well lid simple structure, easy operation, the security is higher.

Drawings

The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:

FIG. 1: is a two-layer construction diagram of a ventilation shaft in the prior art.

FIG. 2: is a schematic diagram of the arrangement of a manhole, a cover plate and a ladder in the prior art.

FIG. 3: the invention provides a side view of the matching of a manhole cover and a manhole.

FIG. 4: the invention provides a perspective view of the matching of a well cover and a manhole.

FIG. 5: a partial enlarged view of the portion of the safety rail shown in fig. 4.

The reference numbers illustrate:

the prior art is as follows:

011. a gas cabin layer; 012. a second layer of the gas cabin;

021. one layer of water tank; 022. a water tank layer II;

031. one layer of the water letter cabin; 032. a second layer of the water letter cabin;

041. a first layer of the electric power cabin; 042. the electric power cabin is divided into two layers;

05. a manhole; 051. a water retaining platform;

06. a cover plate;

07. the ladder is climbed.

The invention comprises the following steps:

1. a manhole; 11. a water retaining platform; 12. climbing a ladder;

2. a cover plate; 21. a back side;

3. a safety handrail; 31. a connecting rod; 32. a grab rail;

4. a rotating shaft;

5. a drive device;

6. and (4) a fixing device.

Detailed Description

In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.

As shown in fig. 3 to 5, the present embodiment provides a manhole cover for being installed on a manhole 1, the manhole cover comprising a cover plate 2 openably and closably installed at a top of the manhole 1, the cover plate 2 having a first operating position capable of blocking the manhole 1 and a second operating position capable of opening the manhole 1. A retractable safety handrail 3 is provided on the back 21 of the cover 2, the back 21 of the cover 2 being disposed towards the manhole 1 when the cover 2 is in the first operating position, the safety handrail 3 being in a retracted position and being capable of extending into the manhole 1. When the cover 2 is in the second operating position, the handrail 3 can be in the extended position and the handrail 3 can be on the same side as the ladder 12 provided in the manhole 1 and above the ladder 12.

When the safety ladder is used, the cover plate 2 is opened, the cover plate 2 is located at the second working position, the safety handrail 3 extends out and is located at the extending position, and the safety handrail 3 can be located above the ladder stand 12. After climbing to the top of the ladder stand 12, the worker under the manhole 1 can climb upwards by the safety handle 3. The personnel located above the manhole 1 can also step on the stairs 12 accurately and conveniently by means of the safety handrail 3 and then slowly descend downwards. When the manhole 1 is not accessed, the safety handle 3 is retracted, and then the cover plate 2 is closed to be in the first working position, and at the moment, the safety handle 3 can extend into the manhole 1.

Therefore, in the well lid in the embodiment, the retractable safety handrail 3 is additionally arranged on the back 21 of the well lid, when the cover plate 2 is opened, the safety handrail 3 can extend out and be positioned above the ladder stand 12, so that people can be better assisted to climb, the problem that the workers are inconvenient to climb in the process of going up and down the manhole 1 is solved, and the up-and-down safety is improved; meanwhile, the safety handrail 3 can be hidden after the cover plate 2 is closed, and the space utilization rate of the underground interior is increased. Whole well lid simple structure, easy operation, the security is higher.

In a specific implementation, in order to prevent external entering water from penetrating into a lower layer from the manhole 1, a water retaining platform 11 is generally provided at a top opening of the manhole 1, and the cover plate 2 is provided on the water retaining platform 11. The water retaining platform 11 is of an annular structure, surrounds the top opening of the manhole 1 for a circle, and is of a whole ring-shaped closed structure so as to play a role in blocking water flow from entering.

Further, in order to facilitate the smooth opening and closing of the cover plate 2 and the smooth telescopic operation of the safety handle 3, as shown in fig. 4, the cover plate 2 is connected with the water blocking platform 11 through the rotating shaft 4 and can be turned over by 180 degrees, and the rotating shaft 4 and the ladder stand 12 are located on the same side. When the cover plate 2 is in the second working position, the front surface of the cover plate 2 faces the water stop table 11 and can be attached to the table surface of the water stop table 11. As shown in fig. 3 and 5, the safety handle 3 includes a connecting rod 31 and a handle bar 32 connected to each other, and the connecting rod 31 is telescopically provided at the rear surface 21 of the cover 2. When the cover 2 is in the first working position, the connecting rod 31 is retracted within the range of the cover 2 and the grab bar 32 is extended into the manhole 1. When the cover 2 is in the second operating position, the connecting rods 31 extend outwardly from the cover 2 and the grab bar 32 is positioned above the ladder stand 12.

Thus, the whole cover plate 2 can be opened and closed by 180 degrees. After the connecting rod 31 retracts to the range of the cover plate 2, the cover plate 2 can be smoothly closed on the manhole 1 to block the manhole 1, the included angle between the planes of the top openings of the cover plate 2 and the manhole 1 is 0 degree, and the grab bar 32 also smoothly extends into the manhole 1 to realize hiding. After the cover plate 2 is turned over by 180 degrees around the rotating shaft 4, the manhole 1 is opened, and an included angle between the cover plate 2 and a plane where a top opening of the manhole 1 is located is 180 degrees; at this time, the connecting rod 31 extends out along the surface of the cover plate 2 and towards the manhole 1, so that the grab bar 32 can be positioned above the ladder stand 12, and the worker can climb conveniently. The opening and closing of the cover plate 2 and the telescopic operation of the safety handrail 3 are not interfered with each other, and the operation is simple.

The opening and closing of the cover plate 2 can be directly realized manually, and the intelligent opening can also be realized by pressing a button by adopting a corresponding control device, which is not limited by the invention.

Preferably, in order to facilitate the holding of the safety handle 3 after the safety handle is extended, the connecting rod 31 and the grab bar 32 are arranged perpendicular to each other, the axis of the connecting rod 31 is perpendicular to the axis of the rotating shaft 4, and the axis of the grab bar 32 is perpendicular to the plate surface of the cover plate 2. Therefore, when the cover plate 2 is in the second working position and the safety handrail 3 extends out, the handrail rod 32 is erected on the cover plate 2, and operators can climb up and down more conveniently; meanwhile, when the safety rail 3 is retracted into the back cover plate 2 in the first working position, the grab bar 32 extends vertically downward, avoiding interference with other components below the manhole 1.

In practical applications, in order to facilitate the telescopic movement of the handrail 3, as shown in fig. 3 and 4, a driving device 5 is provided on the back surface 21 of the cover plate 2, and the driving device 5 is connected to the handrail 3 and can drive the telescopic movement of the handrail 3.

The general driving device 5 may be a directional electronic hydraulic telescopic device or a directional electronic pneumatic telescopic device, or may be other devices as long as the device can drive the safety handrail 3 to extend and retract. The housing of the drive device 5 is fixedly connected to the rear side 21 of the cover 2, and the piston rod of the drive device 5 is fixedly connected to the armrest 3. If necessary, the housing of the drive device 5 can also be fixed to the rear face 21 of the cover 2 by a fixing device 6.

Further preferably, in order to stabilize the handrail when the worker climbs up and down, as shown in fig. 4, two groups of safety handrails 3 are disposed at an interval on the back 21 of the cover plate 2, and the distance between the two groups of safety handrails 3 is greater than the width of the ladder stand 12, so as to avoid collision with the ladder stand 12 when the safety handrails 3 retract and extend into the manhole 1. It can be understood that two connecting rods 31 in two sets of safety handles 3 should parallel arrangement, and two handrail rods 32 should parallel arrangement, and after two sets of safety handles 3 outwards stretched out, two handrail rods 32 all stood upright on apron 2, and the interval between two handrail rods 32 is greater than the width of cat ladder 12, can conveniently supply staff's two hands to support, and it is safer to climb from top to bottom.

The shape of the manhole 1 depends on actual needs, for example, the manhole 1 in this embodiment is a manhole 1 in a pipe rack structure, the manhole 1 is a square hole (for example, a square hole or a rectangular hole), and the cover plate 2 is a square plate body. The rotating shaft 4 is disposed at one side of the square hole, and the axis of the rotating shaft 4 is parallel to the side. Of course, the shape of the manhole 1 can also be a circular hole or other suitable mouth shape, and this embodiment is merely illustrative.

Taking the manhole 1 as the manhole 1 in the pipe gallery structure as an example, the working process of the manhole cover in the embodiment is as follows:

when the staff need follow the bottom and go up to piping lane intermediate layer space, open the well lid, the back 21 of well lid will be parallel with piping lane medium plate plane after the well lid is opened and finishes. The piston rod of the drive means 5 is then extended to drive the handrail 3 outwardly, the extended handrail 3 being located substantially directly above the ladder stand 12.

The staff can continue climbing upwards through safety handle 3 after climbing to the top of cat ladder 12, then goes up to pipe gallery medium plate top. When the staff accomplished the maintenance work, when returning lower floor's main entrance by the piping lane intermediate layer, can accurately conveniently step on climb ladder 12 with the help of safety handle 3, then slowly downwards, treat safely down to behind the piping lane bottom, can close the well lid.

When preparing closed well lid, shrink earlier drive arrangement 5's piston rod to initial condition to drive safety handle 3 and contract to the well lid within range, accomplish the shrink back, the well lid begins to close.

In conclusion, the well lid in this embodiment is organically combined with the safety handle 3, the function of the handle is increased, the safety handle 3 installed on the back of the cover plate 2 is utilized, after the cover plate 2 is opened by 180 degrees, the driving device 5 drives the safety handle 3 to extend out, and the safety handle 3 stands upright on the well lid, so that the worker can reach the well lid more easily, and the worker can climb up and down. The problem of personnel's discrepancy manhole 1 inconvenience is solved, reduces personnel's risk from top to bottom between the layer simultaneously, has improved the security from top to bottom greatly. Meanwhile, when the well lid needs to be closed, the driving device 5 firstly enables the safety handle 3 to retract and return, so that the subsequent well lid can be smoothly closed; and can hide safety handle 3 again after apron 2 is closed, increased the inside space utilization of piping lane.

The above are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.