Manhole anti-locking safety component

Abstract

A manhole anti-locking safety component comprises a clamping sleeve, the clamping sleeve is bent in multiple sections and comprises a bottom plate, a side edge plate and a top plate which are sequentially connected, the bottom plate and the top plate are arranged in parallel and face the same direction, and a stop lever is arranged on the bottom plate in a hinged mode; a stop lever storage groove is formed in the top plate, and a non-return stop piece is arranged in the stop lever storage groove. The number of the non-return blocking pieces is two, and the two non-return blocking pieces are hinged to the interior of the blocking rod storage groove respectively and arranged to be opposite to each other. And a lock hole is formed in the non-return separation blade. The manhole door solves the problem that the manhole door is closed by mistake in the prior art, and under the condition of the pin lock, the cover plate can be assembled only when the problem is solved. And particularly, after the equipment is assembled, the normal access of the personnel to the manhole is not influenced, the implementation effect is safer, and the equipment is simple in structure, low in manufacturing cost and quick and convenient to disassemble and assemble. And the safety popularization value is high.

Description

Technical Field

[0001] The utility model relates to the field of general safety components, in particular to a manhole anti-locking safety component. Background Art

[0002] Manholes are mostly used in sealed production equipment, and their functions are emergency pressure relief and allowing staff to enter the equipment through the manhole for maintenance or repair. After personnel enter the manhole, there are certain construction risks, mainly that once the manhole is accidentally closed, it will form signal shielding inside the sealed equipment and cannot transmit information to the outside. In the prior art, warning signs are usually arranged during construction, and there are relevant safety production process constraints, but there are still safety production accidents caused by the accidental closing of the manhole door.

[0003] In response to the above problems, a one-way pin lock device for manhole doors has emerged on the market currently, that is, the relevant device is bridged on the bottom support of the manhole cover plate, and the pin lock can only be released from the inside to the outside to ensure construction safety. However, the disadvantages of using such equipment are also obvious, that is, the equipment can only be opened from the inside of the manhole. Once the equipment rusts, is damaged or other special situations occur, it is difficult for personnel to escape from the equipment; and even if it can be disassembled smoothly, it takes a certain amount of unlocking time, that is, it causes the situation that construction personnel cannot quickly escape from the manhole. There is currently no corresponding solution to the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a manhole anti-locking safety component with a simple structure, capable of quick disassembly and assembly, and on the basis of fully preventing the accidental closing of the manhole, without affecting the normal access of staff to the manhole.

[0005] The device includes a ferrule. The ferrule is bent in multiple sections and includes a bottom plate, a side plate and a top plate connected in sequence, and the bottom plate and the top plate are arranged parallel to each other and in the same direction;

[0006] A retaining rod is hinged on the bottom plate;

[0007] A retaining rod storage groove is formed on the top plate, and a check retaining piece is arranged in the retaining rod storage groove;

[0008] There are two check retaining pieces in total. The two check retaining pieces are respectively hinged in the retaining rod storage groove and are arranged opposite to each other;

[0009] A lock hole is arranged on the check retaining piece.

[0010] The achieved effect is that the shift lever passes through the assembly hole on the bottom support of the manhole cover plate and is placed into the shift lever storage groove, which is also inside the two check flaps. By configuring a mechanical lock in the lock holes of the two check flaps, the device can be assembled on the bottom support of the manhole cover plate. In this case, the cover plate cannot be assembled. That is, without unlocking the mechanical lock, the device cannot be removed, and the cover plate cannot be assembled. Thus, the anti-locking of the manhole is achieved, and in this case, it does not affect the normal entry and exit of personnel.

[0011] The beneficial effects of the present utility model are as follows: The present utility model solves the problem of the accidental closing of the manhole door in the prior art. In the case of a pin lock, the cover plate can only be assembled after the problem is solved. In particular, after the device is assembled, it does not affect the normal entry and exit of personnel into the manhole. Its implementation effect is safer, and the device has a simple structure, low cost, and is quick and convenient to disassemble and assemble. It has great value for safety promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of a manhole anti-locking safety component according to the present utility model;

[0013] Figure 2 is based on Figure 1 a partial top view from a perspective;

[0014] REFERENCE MARKS:

[0015] 1 - top plate, 2 - side plate, 3 - bottom plate, 4 - holding part, 5 - shift lever, 6 - shift lever storage groove, 7 - check flap, 8 - spring

[0016] The realization, functional features, and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Referring to Figure 1 , Figure 2 , a manhole anti-locking safety component according to the present utility model includes a ferrule. The ferrule is bent in multiple sections and includes a bottom plate 3, a side plate 2, and a top plate 1 that are sequentially connected. The bottom plate 3 and the top plate 1 are arranged in parallel and have the same orientation.

[0018] A shift lever 5 is hingedly provided on the bottom plate 3;

[0019] A shift lever storage groove 6 is formed on the top plate 1, and a check flap 7 is provided in the shift lever storage groove 6;

[0020] There are two check flaps 7 in total. The two check flaps 7 are respectively hinged in the shift lever storage groove 6 and are arranged opposite to each other;

[0021] A lock hole is provided on the check flap 7.

[0022] The achieved effect is that the shift lever 5 passes through the assembly hole on the bottom support of the manhole cover plate and is placed into the shift lever storage groove 6, and also within the two check retaining plates 7; by configuring a mechanical lock in the lock holes of the two check retaining plates 7, the equipment can be assembled on the bottom support of the manhole cover plate. In this case, the cover plate cannot be assembled, that is, without unlocking the mechanical lock, the equipment cannot be removed, and the cover plate cannot be assembled, thus achieving manhole anti-locking, and in this case, it does not affect the normal access of personnel.

[0023] Furthermore, the edges of the bottom plate 3, the side plates 2 and the top plate 1 are provided with smooth chamfers, and the length of the top plate 1 is greater than the length of the bottom plate 3.

[0024] Furthermore, the shift lever storage groove 6 is opened inward from the front end of the top plate 1 and is a rectangular storage groove.

[0025] The achieved effect is to facilitate the assembly of the equipment.

[0026] Furthermore, the bottom plate 3 and the side plates 2 are plate bodies or rods.

[0027] The achieved effect is to reduce the self-weight of the equipment and facilitate carrying.

[0028] Furthermore, as shown in the attached drawings of the specification Figure 2 the length of the check retaining plate 7 is greater than half of the width of the shift lever storage groove 6.

[0029] The achieved effect is that after hanging the mechanical lock, it can fully cooperate with the mechanical lock to lock and avoid the check retaining plate 7 from rotating outward.

[0030] Furthermore, a spring 8 is provided between the check retaining plate 7 and the side wall of the shift lever storage groove 6.

[0031] The achieved effect is to facilitate quick assembly.

[0032] Furthermore, the two check retaining plates 7 are arranged in a staggered manner up and down.

[0033] The achieved effect is to facilitate the removal of the equipment.

[0034] Furthermore, the length of the shift lever 5 is greater than the sum of the distance between the bottom plates 3 and the length of the shift lever storage groove 6.

[0035] The achieved effect is to prevent the shift lever 5 from disengaging from the shift lever storage groove 6.

[0036] Preferably, a holding part 4 is integrally connected to the upper part of the shift lever 5, and the holding part 4 has its own weight and an outer diameter greater than that of the shift lever 5.

[0037] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic features of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes that fall within the meaning and scope of the equivalent elements of the claims in the present utility model. Any reference signs in the claims should not be construed as limiting the claims.

[0038] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A manhole anti-locking safety component, comprising a ferrule. The ferrule is bent in multiple sections and includes a bottom plate, a side plate, and a top plate that are sequentially connected. The bottom plate and the top plate are arranged parallel to each other and face the same direction. It is characterized in that: A stop bar is hingedly arranged on the bottom plate; A stop bar storage groove is formed on the top plate, and a check stop piece is arranged in the stop bar storage groove; There are two check stop pieces in total. The two check stop pieces are respectively hinged in the stop bar storage groove and are arranged opposite to each other; A lock hole is arranged on the check stop piece.

2. The manhole anti-locking safety component according to claim 1, characterized in that, The edges of the bottom plate, side plates and top plate are smoothly chamfered, and the length of the top plate is greater than the length of the bottom plate.

3. The manhole anti-locking safety component according to claim 1, characterized in that, The stop bar storage groove is formed inward from the front end of the top plate and is a rectangular storage groove.

4. The manhole anti-locking safety component according to claim 1, characterized in that, The bottom plate and the side plates are plate bodies or rods.

5. The manhole anti-locking safety component according to claim 1, characterized in that, The length of the check stop piece is greater than half of the width of the stop bar storage groove.

6. The manhole anti-locking safety component according to claim 1, characterized in that, A spring is arranged between the check stop piece and the side wall of the stop bar storage groove.

7. The manhole anti-locking safety component according to claim 1, characterized in that, The two check stop pieces are arranged staggeredly up and down.

8. The manhole anti-locking safety component according to claim 1, wherein, The length of the stop bar is greater than the sum of the distance between the bottom plates and the length of the stop bar storage groove.

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