Manhole hard isolation protection device

Abstract

The utility model discloses a manhole hard isolation protection device which is used for being installed on a manhole. Comprising a plurality of fence vertical rods, fence belts and grating rods. The fence vertical rods are vertically installed on the periphery of the manhole. The fence belt is horizontally wound on the fence vertical rods; the grating rod is of a telescopic structure and is horizontally mounted on the manhole; matching of manholes of different sizes is achieved by adjusting the number of the fence vertical rods and the lengths of the grating rods. The device is simple in structure and convenient to manufacture, assemble and disassemble, and materials are convenient to obtain. And the grating rod has a telescopic function and certain rigidity strength, and is suitable for manholes of various sizes and specifications. In addition, the manhole hard isolation protection device is small in occupied space, light and convenient to carry and store.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering repair, in particular to a hard isolation protection device for manholes. Background Art

[0002] A manhole refers to an opening structure for personnel to enter and exit the enclosed space of a cabin, facilitating installation, maintenance, and safety inspections. Personnel can enter the interior of the cabin through this hole. Manholes and manhole covers are provided in ship cabins, including cover plates with sealing performance and their fixing accessories, ensuring the airtightness of the cabin. They are generally used in positions such as the deck, inner bottom plate, platform, and bulkhead of the ship. Ship manholes can be divided into oblong and oval according to the opening shape, and can be divided into protruding and embedded types according to whether they protrude above the opening surface after installation. Their nominal sizes cover 450mm×350mm, 600mm×400mm, 800mm×600mm, 800mm×400mm, etc.

[0003] During the dry-docking repair of a ship, according to the needs of repair projects and safety management, the manhole covers of the cabins are often opened. After the manhole covers are opened, ventilation and gas replacement are carried out, and personnel can enter only after the gas in the cabin is detected to be qualified. As the entrance position of a confined space, manholes should be provided with eye-catching warning signs and physical isolation measures such as locking, isolation fences, and protective nets to prevent unauthorized entry or falling of personnel. Especially for manholes on the deck surface, inner bottom plate surface, or similar horizontal deck surfaces, there is a high risk of personnel slipping and falling into the cabin. To improve the safety factor, in addition to the conventional installation of safety guardrails, it is necessary to add protective measures of hard isolation grilles.

[0004] Secondly, after meeting the conditions for convenient entry into the cabin for construction, the frequency of personnel entering and exiting the manhole increases. It is required that the hard isolation protection measures should not only achieve the safety protection effect but also be convenient for personnel to construct, be restored in a timely manner, and be easy to carry, store, and transport. The isolation protection devices in the prior art are designed too bulky, large, and do not match the contour size of the manhole, greatly affecting the production efficiency and the safety protection effect of personnel. Summary of the Utility Model

[0005] The utility model aims to overcome at least one defect of the above-mentioned prior art and provides a hard isolation protection device for manholes to achieve the purposes of universality, portability, high safety, and convenient material selection.

[0006] The utility model provides a hard isolation protection device for manholes, which is used to be installed on the manhole; it includes a plurality of fence vertical poles, a fence belt, and grille poles; the fence vertical poles are vertically installed around the manhole; the fence belt horizontally surrounds the fence vertical poles; the grille poles are of a telescopic structure and are horizontally installed on the manhole; the matching of manholes with different sizes is achieved by adjusting the number of the fence vertical poles and the length of the grille poles.

[0007] Further, the grid bar includes a first flat iron, a second flat iron, a first square pipe, and a second square pipe; the first flat iron and the second flat iron are relatively inserted into the first square pipe and the second square pipe to form a telescopic grid bar; both ends of the grid bar are fixed on the manhole.

[0008] Further, a limit block for preventing decoupling is provided on the first flat iron and / or the second flat iron.

[0009] Further, the manhole includes a hole position area and a fixing area; the fixing area is provided on the outer periphery of the hole position area; a plurality of groups of stud bolts are evenly distributed on the fixing area; the fence vertical poles are fixed on the stud bolts.

[0010] Further, bolt holes are respectively provided at both ends of the straight bar structure. By inserting the bolt holes onto the stud bolts and then using nuts, the grid bar is fixed to the fixing area.

[0011] Further, the fence vertical pole includes a sealing plate, a carbon steel pipe, and a seat plate that are sequentially connected from top to bottom; an installation hole is provided at the other end of the seat plate; by sleeving the installation hole onto the stud bolt and then using a nut, the fence vertical pole is fixed to the fixing area.

[0012] Further, the fence belt includes a chain and an open link; the chain and the open link are sleeved and connected; the chain is welded on the fence vertical pole, and the open link is movably sleeved on the adjacent fence vertical poles to form an access opening for personnel.

[0013] Further, the number of the fence vertical poles is 3 to 8; the number of the grid bars is 1 to 5.

[0014] Further, multiple grid bars are arranged parallel to or cross each other.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] The structure of the present utility model is simple, the materials are convenient to obtain, and the manufacturing, disassembly, and assembly are convenient. Moreover, the grid bar has a telescopic function and certain rigid strength, and is applicable to manholes of various size specifications. In addition, the manhole hard isolation protection device of the present application occupies a small space, is light, and is conducive to handling and storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an installation schematic diagram of the manhole hard isolation protection device of the present utility model.

[0018] Figure 2 It is an installation drawing of the fence vertical pole of the manhole hard isolation protection device of the present utility model.

[0019] Figure 3 This is the installation diagram of the grille rod of the manhole hard isolation and protection device of the present utility model.

[0020] Figure 4 This is the top view schematic diagram of the assembly of the grille rod of the manhole hard isolation and protection device of the present utility model.

[0021] Figure 5 This is the side view schematic diagram of the assembly of the grille rod of the manhole hard isolation and protection device of the present utility model. Detailed implementation manners

[0022] In the accompanying drawings of the embodiments, the technical solutions in the embodiments of the present utility model will be described in more detail. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some but not all of the embodiments of the present utility model. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. The embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0023] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present application, then the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, then the directional indications will also change accordingly.

[0024] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, then the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0025] Embodiment

[0026] This embodiment provides a ship manhole isolation and protection device, as Figure 1As shown in the figure, the manhole includes a hole position area 4 and a fixing area 5; the fixing area 5 is arranged on the outer periphery of the hole position area 4; multiple groups of studs 51 are evenly distributed on the fixing area 5; the fence upright post 1 is fixed on the studs 51. The fixing area 5 is provided with a fence upright post 1, a fence belt 2 and a grille rod 3. The fence upright post 1 is made by welding a carbon steel pipe 11 with a length of 1.1 meters and related accessories. A sealing plate 12 is welded to the top of the carbon steel pipe 11, and a steel rectangular seat plate 13 is welded to the bottom. Mounting holes 14 are arranged on the seat plate 13, which can be connected and fixed to the studs 51 on the manhole. Combined with Figure 2 As shown in the figure, the fence belt 2 includes a chain 21 and an open link 22. One end of the chain 21 is connected with an open link 22; the chain 21 and the open link 22 are welded to the middle of the fence upright post 1. According to the size of the manhole, 3 to 5 fence upright posts 1 are selected and installed on the studs 51 in the fixing area 5 of the manhole. The chain 21 and the open link 22 connect adjacent fence upright posts 1 to form an annular isolation belt above the manhole. In this embodiment, both ends of two groups of grille rods 3 are fixed to the studs 51 to form a protection for the hole position area 4.

[0027] Combined with Figures 3 to 5 As shown in the figure, the grille rod 3 on the manhole structure is welded and composed of ready-made profiles such as flat iron and rectangular square tubes, including a first flat iron 31, a second flat iron 32, a first square tube 33 and a second square tube 34; bolt holes 35 are arranged at one end of the first flat iron 31 and the second flat iron 32, and the other ends pass through the first square tube 33 and the second square tube 34 and are welded to fit the inner sides of the first square tube 33 and the second square tube 34. The square tubes of the first flat iron 31 and the second flat iron 32 face each other. The first flat iron 31 and the second flat iron 32 respectively pass through the holes of the first square tube 33 and the second square tube 34, are buckled together and can be telescopically adjusted in length, and can also form sufficient rigid strength. A limiting block 36 is welded on one of the flat irons to prevent the two flat irons from separating during sliding. Thus, the two flat irons are assembled into a pair. The grille rod 3 formed by the first flat iron 31 and the second flat iron 32 is installed on the studs 51 of the manhole structure through the bolt holes 35 at both ends within the applicable length range and tightened with nuts. In this way, the grille rod 3 plays a role of hard isolation protection for the manhole.

[0028] In this embodiment, according to the size specification of the manhole, two grille rods 3 can be set and arranged in parallel.

[0029] In other embodiments of the present utility model, one or more grille rods 3 can be set, and at the same time, they can be arranged horizontally, vertically, obliquely, etc. according to the shape of the door.

[0030] The specific implementation is as follows:

[0031] First, open the manhole cover. According to the arrangement of the manhole cover fasteners, determine the form of installing the grille rod 3, and the grille rod 3 can be arranged horizontally or vertically.

[0032] Take a pair of grille rods 3 and adjust the length by telescopic sliding: By sliding the first flat iron 31 and the second flat iron 32 relative to each other, adjust the length of the grille rod 3 so that the bolt holes 35 at both ends are aligned with the manhole studs 51. Fix the grille rod 3 to the manhole through the studs 51 and tighten the nuts. If necessary, add another pair of grille rods 3 and install them on the manhole fixing positions in the same way.

[0033] Install the protective fence: The holes in the seat plate 13 on the upright post 1 of the protective fence pass through the studs 51 at the manhole fixing positions, and tighten the nuts. Connect the chains 21 and the open links 22 that connect adjacent fence upright posts 1.

[0034] Up to this point, during the ship repair construction process, the manhole is protected by hard isolation, and the cabin name and warning signs are posted on the identification plate, and the operation cards for personnel to enter the cabin are hung up.

[0035] When personnel enter the cabin through the manhole, first unscrew the nuts on one side of a set of isolation grille rods 3, move one side of the grille rod 3 away, and disconnect an open link 22 of an adjacent fence upright post 1. Personnel can grasp the fence upright post 1 as a handrail when entering and exiting, and restore it in time after passing through the manhole, and set the open link 22 on the carbon steel pipe 11.

[0036] After the repair project is completed, remove the protective fence upright posts 1 and grille rods 3 and recycle them, and restore the manhole cover.

[0037] Similarly, for the manholes on the bulkhead, there is no need to install the fence upright posts 1, and only installing the protective grille can play an isolation role to prevent personnel from accidentally entering.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention. Those skilled in the art can also make other changes within the spirit of the present invention for use in the design of the present invention, as long as they do not deviate from the technical effects of the present invention. These changes made in accordance with the spirit of the present invention should all be included within the scope claimed by the present invention.

Claims

1. A manhole hard isolation protection device, used for installation on a manhole; characterized in that: It comprises a plurality of fence poles (1), fence belts (2) and grille poles (3); the fence poles (1) are vertically installed around the manhole; The fence belt (2) is horizontally wrapped around the fence pole (1); The grid rod (3) is a retractable structure and is horizontally mounted on the manhole; Matching of manholes of different sizes is achieved by adjusting the number of the fence uprights (1) and the length of the grille rods (3).

2. The manhole hard isolation protection device according to claim 1 is characterized in that: The grille rod (3) comprises a first flat iron (31), a second flat iron (32), a first square tube (33) and a second square tube (34); the first flat iron (31) and the second flat iron (32) are relatively inserted into the first square tube (33) and the second square tube (34) to form a retractable grille rod (3) of a straight-line structure; and both ends of the grille rod (3) are fixed to the manhole.

3. The manhole hard isolation protection device according to claim 2 is characterized in that: A limit block (36) for preventing the first flat iron (31) and / or the second flat iron (32) is provided on the first flat iron (31) and / or the second flat iron (32) to prevent the hook from coming off.

4. The manhole hard isolation protection device according to claim 2 is characterized in that: The manhole comprises a hole location area (4) and a fixing area (5); the fixing area (5) is arranged on the outer periphery of the hole location area (4); a plurality of groups of studs (51) are evenly distributed on the fixing area (5); and the fence pole (1) is fixed on the studs (51).

5. The manhole hard isolation protection device according to claim 4 is characterized in that: Bolt holes (35) are respectively provided at both ends of the I-shaped structure, and the grating rod (3) and the fixing area (5) are fixed by inserting the bolt holes (35) into the studs (51) and then using nuts.

6. The manhole hard isolation protection device according to claim 4 is characterized in that: The fence post (1) comprises a cover plate (12), a carbon steel pipe (11) and a seat plate (13) which are connected in sequence from top to bottom; a mounting hole (14) is provided at the other end of the seat plate (13); the mounting hole (14) is sleeved on the stud (51), and a nut is used to fix the fence post (1) to the fixing area (5).

7. The manhole hard isolation protection device according to claim 1 is characterized in that: The fence belt (2) comprises a chain (21) and an open chain link (22); the chain (21) and the open chain link (22) are sleeved and connected; the chain (21) is welded to the fence upright pole (1), and the open chain link (22) is movably sleeved on an adjacent fence upright pole (1) to form a movable opening for people to enter and exit.

8. The manhole hard isolation protection device according to claim 1 is characterized in that: The number of the fence uprights (1) is 3 to 8; the number of the grille poles (3) is 1 to 5.

9. The manhole hard isolation protection device according to claim 8 is characterized in that: The plurality of grid bars (3) are arranged parallel to or crosswise with each other.

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