CN218467531U - Manhole door protection cover - Google Patents

Abstract

The utility model discloses a manhole door protection casing, including ground, fixing base, retainer plate and stop device, the utility model discloses an at manhole door open-top portion ground welding fixing base, the fixing base top articulates there is the retainer plate, is provided with the reinforcing bar frame of cask type at the retainer plate top, and the reinforcing bar frame can protect manhole door entrance to a cave, and reinforcing bar frame diameter is greater than manhole door diameter, and the reinforcing bar frame can protect manhole door, prevents that personnel from missing to go into or falling the box, does not influence the operation and the outward appearance of equipment simultaneously.

Description

Manhole door protection cover

Technical Field

The utility model relates to a manhole door technical field specifically is a manhole door protection casing.

Background

The electric precipitation insulation can has the following functions: the insulating porcelain insulator of the cathode system is isolated from the flue gas and the surrounding environment. Therefore, the device is a sealed limited space and is accessed by the four manhole doors at the top. According to the requirements of the limited space overhaul safety measures: the steps of ventilation, detection and post operation are required. When the heat preservation box enters a maintenance state, after the manhole door is opened, personnel are not allowed to enter immediately, and the axial flow fan is required to perform forced ventilation or heat dissipation on the heat preservation box until the gas detector is qualified in detection. It is also necessary to prevent personnel from accidentally entering or falling into the tank during this period.

The corresponding equipment of the safety pre-control measure of the special operation of the effective limited space is not designed and arranged at the manhole of the original box body, once the manhole door is opened, the danger that personnel enter the box body by mistake or fall into the box body carelessly is faced, forced ventilation equipment cannot be installed due to the terrain limitation, and effective ventilation cannot be achieved even if the forced ventilation equipment is installed. The guardrail plate that the staff looked for at will is done netted substitute, and the size is not suitable, and the bearing is also not up to standard, and is more nonstandard, has very big potential safety hazard.

SUMMERY OF THE UTILITY MODEL

This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the invention.

The present invention has been made in view of the above and/or other problems that exist in the prior art manhole door covers.

Therefore, the utility model aims at providing a manhole door protection casing, through at manhole door open-top portion ground welding fixing base, the fixing base top articulates there is the retainer plate, is provided with the reinforcing bar frame of cask type at the retainer plate top, and the reinforcing bar frame can protect manhole door entrance to a cave, and the reinforcing bar frame diameter is greater than manhole door diameter, and the reinforcing bar frame can protect manhole door, prevents that personnel from missing or falling the box, does not influence the operation and the outward appearance of equipment simultaneously.

For solving the technical problem, according to the utility model discloses an aspect, the utility model provides a following technical scheme:

a manhole door shield, comprising:

the top of the ground is provided with a manhole door, and a door cover is hinged to the opening of the manhole door;

the fixed seat is arranged on the top of the ground and surrounds the opening of the manhole door, and a push plate is arranged on the top of the fixed seat;

the retainer plate, the retainer plate articulates the push pedal top, the reinforcing bar frame is installed at the retainer plate top.

As an optimal selection scheme of manhole door protection casing, wherein, the spring is installed at the fixing base top, the spring top with the push pedal bottom is connected.

As an optimal selection scheme of manhole door protection casing, wherein, the guiding hole has been seted up at the fixing base top, the guide bar is installed to the push pedal bottom, the guide bar runs through the spring inner circle stretches into inside the guiding hole.

As an optimal selection scheme of manhole door protection casing, wherein, first otic placode is installed to the push pedal outer lane, the limiting plate is installed at first otic placode top, spacing hole has been seted up to the limiting plate lateral wall.

As an optimal selection scheme of manhole door protection casing, wherein, the second otic placode is installed to the retainer plate outer lane, the through hole has been seted up at second otic placode top, the limiting plate runs through and stretches out the through hole.

As an optimal selection scheme of manhole door protection casing, wherein, still include stop device, stop device is including installing the spacing casing at second otic placode top, seting up spacing spout, the position of spacing casing lateral wall the inside slide of spacing spout, installing the spacing spring of slide lateral wall with install the gag lever post of another lateral wall of slide, the gag lever post runs through and stretches out spacing casing lateral wall runs through spacing hole.

Compared with the prior art: through at manhole door top opening part ground welding fixing base, the fixing base top articulates there is the retainer plate, is provided with the reinforcing bar frame of cask type at the retainer plate top, and the reinforcing bar frame can protect manhole door entrance to a cave, and the reinforcing bar frame diameter is greater than manhole door diameter, and the reinforcing bar frame can protect manhole door, prevents that personnel from missing or falling the box, does not influence the operation and the outward appearance of equipment simultaneously.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor. Wherein:

FIG. 1 is an overall structure view of a manhole door protective cover of the present invention;

FIG. 2 is a partial structure view of a manhole door protective cover according to the present invention;

FIG. 3 is a structural view of a fixing base of a manhole door protection cover of the present invention;

FIG. 4 is a structural view of a manhole door protective cover fixing ring of the present invention;

figure 5 is the utility model relates to a manhole door protection casing stop device structure picture.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Next, the present invention will be described in detail with reference to the schematic drawings, and in the detailed description of the embodiments of the present invention, for convenience of explanation, the sectional view showing the device structure will not be enlarged partially according to the general scale, and the schematic drawings are only examples, and should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

The utility model provides a manhole door protection casing, through at manhole door open-top portion ground welding fixing base, the fixing base top articulates there is the retainer plate, is provided with the reinforcing bar frame of cask type at the retainer plate top, and the reinforcing bar frame can protect manhole door entrance to a cave, and the reinforcing bar frame diameter is greater than manhole door diameter, and the reinforcing bar frame can protect manhole door, prevents that personnel from missing or falling the box, does not influence the operation and the outward appearance of equipment simultaneously.

Fig. 1 to 5 are schematic structural views illustrating an embodiment of a manhole door protective cover according to the present invention, and referring to fig. 1 to 5, the manhole door protective cover according to the present embodiment includes a ground 100, a fixing seat 200, a fixing ring 300, and a limiting device 400.

The manhole door 110 is arranged at the top of the ground 100, the door cover 120 is hinged to the opening of the manhole door 110, the pull rod is arranged at the top of the door cover 120, and the hinged opening direction of the door cover 120 is opposite to the hinged opening direction of the fixing ring 300.

The fixing seat 200 is installed at the top of the ground 100 and surrounds the opening of the manhole door 110, a push plate 210 is arranged at the top of the fixing seat 200, a spring 220 is installed at the top of the fixing seat 200, the top of the spring 220 is connected with the bottom of the push plate 210, when a worker is stumbled and falls on the top of the fixing ring 300, the fixing ring 300 is impacted, the fixing ring 300 drives the push plate 210 to move towards the fixing seat 200, the spring 220 buffers the impact force, the injury to the worker is reduced, a guide hole 230 is formed at the top of the fixing seat 200, a guide rod 240 is installed at the bottom of the push plate 210, the guide rod 240 penetrates through the inner ring of the spring 220 and extends into the guide hole 230, when the fixing ring 300 moves towards the fixing seat 200, the push plate 210 is pushed to move towards the fixing seat 200, at the moment, the guide rod 240 slides inside the guide hole 230 to guide the moving direction of the push plate 210, the push plate 210 is prevented from deviating, a first ear plate 250 is installed on the outer ring of the push plate 210, a limit plate 260 is installed at the top of the first ear plate 250, and a limit hole 270 is formed in the side wall of the limit plate 260.

The retainer plate 300 is hinged to the top of the push plate 210, the reinforcing steel frame 310 is installed at the top of the retainer plate 300, the second ear plate 320 is installed on the outer ring of the retainer plate 300, the through hole 330 is formed in the top of the second ear plate 320, the limiting plate 260 penetrates through the through hole 330, the reinforcing steel frame 310 is used for protecting the opening of the manhole door 110, the worker is prevented from accidentally dropping into the manhole door 110, and meanwhile the reinforcing steel frame 310 has a gap between reinforcing steel bars and does not affect the ventilation operation and the appearance of equipment.

The limiting device 400 comprises a limiting shell 410 arranged at the top of the second ear plate 320, a limiting sliding groove 420 arranged on the side wall of the limiting shell 410, a sliding plate 430 positioned inside the limiting sliding groove 420, a limiting spring 440 arranged on the side wall of the sliding plate 430 and a limiting rod 450 arranged on the other side wall of the sliding plate 430, wherein the limiting rod 450 penetrates through the side wall of the limiting shell 410 and penetrates through a limiting hole 270, the sliding plate 430 is pulled to slide inside the limiting sliding groove 420 and extrude the limiting spring 440, the limiting rod 450 is drawn into the limiting sliding groove 420 along with the sliding plate 430, the fixing ring 300 is turned over to enable the bottom of the second ear plate 320 to be attached to the top of the first ear plate 250, the limiting plate 260 penetrates through the extending through hole 330, the sliding plate 430 is loosened, the limiting spring 440 rebounds to push the limiting rod 450 to penetrate through the limiting hole 270, and the fixing ring 300 is limited.

With reference to fig. 1-5, the manhole door protective cover of this embodiment, during use, the fixing base 200 is welded on the top of the ground 100 and surrounds the opening of the manhole door 110, the fixing ring 300 is turned to make the bottom of the second ear plate 320 fit with the top of the first ear plate 250, the limiting plate 260 penetrates through the top of the through hole 330, the limiting device 400 is used to limit the fixing ring 300, the fixing ring 300 protects the manhole door 110, when the door cover 120 needs to be opened, the sliding plate 430 is pulled first to make the limiting rod 450 be drawn out from the limiting hole 270, the fixing ring 300 is turned, and the manhole door 110 is leaked from the door cover 120 in the reverse turning direction for use.

While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the disclosed embodiments of the present invention can be used in any combination with each other, and the non-exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims (6)

1. A manhole door shield, comprising:

the ground is (100), a manhole door (110) is arranged at the top of the ground (100), and a door cover (120) is hinged to an opening of the manhole door (110);

the fixed seat (200) is mounted at the top of the ground (100) and surrounds the opening of the manhole door (110), and a push plate (210) is arranged at the top of the fixed seat (200);

the fixing ring (300) is hinged to the top of the push plate (210), and a reinforcing steel bar frame (310) is installed at the top of the fixing ring (300).

2. The manhole door protective cover according to claim 1, wherein a spring (220) is mounted on the top of the fixing seat (200), and the top of the spring (220) is connected with the bottom of the push plate (210).

3. The manhole door protective cover according to claim 2, wherein a guide hole (230) is formed in the top of the fixing seat (200), a guide rod (240) is installed at the bottom of the push plate (210), and the guide rod (240) penetrates through the inner ring of the spring (220) and extends into the guide hole (230).

4. The manhole door protective cover according to claim 3, wherein a first ear plate (250) is installed on an outer ring of the push plate (210), a limiting plate (260) is installed on the top of the first ear plate (250), and a limiting hole (270) is formed in a side wall of the limiting plate (260).

5. The manhole door shield according to claim 4, wherein a second ear plate (320) is installed on an outer ring of the fixing ring (300), a through hole (330) is formed in the top of the second ear plate (320), and the limiting plate (260) penetrates through the through hole (330).

6. The manhole door shield according to claim 5, further comprising a limiting device (400), wherein the limiting device (400) comprises a limiting housing (410) mounted on the top of the second ear plate (320), a limiting sliding groove (420) formed in the side wall of the limiting housing (410), a sliding plate (430) located inside the limiting sliding groove (420), a limiting spring (440) mounted on the side wall of the sliding plate (430), and a limiting rod (450) mounted on the other side wall of the sliding plate (430), and the limiting rod (450) extends through the side wall of the limiting housing (410) and through the limiting hole (270).

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