Manhole ladder stand structure

Abstract

The utility model discloses a manhole ladder stand structure which comprises a ladder stand and a cover plate structure, the ladder stand is connected with a wall body through an embedded part, the cover plate structure is arranged on a manhole, the cover plate structure comprises a connecting frame and a cover plate, a hinge is arranged on the connecting frame, the connecting frame is connected with the cover plate through the hinge, and a handle is arranged on the cover plate. The cover plate is hinged to the connecting frame, and the handle is arranged on the cover plate, so that the cover plate structure is conveniently and quickly opened and closed, and the working efficiency is improved. The crawling ladder is composed of the supporting pieces, the step plates and the supporting beams, so that the crawling ladder is simple in structure and convenient to install. The utility model is suitable for quick access from the ground to the basement, and has the advantages of simple installation, small occupied space, long service life and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of ladders, and particularly relates to a manhole ladder structure. Background Art

[0002] During the construction process, when workers need to go back and forth between the ground and the basement, using a straight ladder to go up and down is a common way. However, using an ordinary straight ladder has the characteristics of insufficient height and poor stability. The manhole at the entrance and exit also needs to be closed when not in use to avoid safety accidents. Therefore, a ladder structure that can close the manhole and has good stability is needed.

[0003] The patent document with the publication number CN207485338U discloses an extensible straight ladder, including: a pair of ladder beams arranged oppositely, several connecting pieces vertically fixed on the outer sides of the ladder beams, and several first treads connected between the ladder beams. Among them, a pair of sliding ladder beams are arranged oppositely on the outer sides of the pair of ladder beams, and several second treads installed on the inner sides of the sliding ladder beams form a sliding ladder; a sliding groove is provided in the middle of the sliding ladder beam, an opening groove is provided at the bottom of the sliding ladder beam, and a baffle is vertically connected to the inner side of the bottom of the sliding ladder beam. This utility model has a telescopic function, but does not provide a closing component at the entrance and exit, and the specific structure of its connecting piece is not disclosed, so its support stability cannot be predicted.

[0004] The patent document with the publication number CN212890855U discloses an upright plane working tooling, including a manual working tooling. The manual working tooling includes four first vertical rods located at the four corners of the manual working tooling. Several working platforms are arranged from top to bottom on the four first vertical rods. A manhole cover and a platform board are arranged side by side on each working platform; the working platforms are connected by a straight ladder, and the straight ladder is located below the manhole cover of the corresponding upper working platform; a chuck seat plate is arranged on the upper working platform, a chuck plate is arranged on the chuck seat plate, the chuck plate is vertically arranged with respect to the manual working tooling, and an installation groove is arranged on the chuck plate; a support rod is arranged on the lower working platform, and the support rod is vertically arranged with respect to the manual working tooling; the support rod and the chuck plate are located on the same side of the manual working tooling; the support rod, the chuck plate and the straight ladder are located on both sides of the manual working tooling. This utility model also does not disclose a manhole closing component, and it is difficult to prevent corresponding safety accidents from occurring. Content of the Utility Model

[0005] To solve the above technical problems, the utility model provides a manhole ladder structure.

[0006] The utility model is achieved through the following technical solutions.

[0007] A manhole ladder structure provided by the utility model comprises a ladder and a cover plate structure. The ladder is connected to a wall through embedded parts. The cover plate structure is arranged on the manhole. The cover plate structure comprises a connecting frame and a cover plate. A hinge is arranged on the connecting frame, and the connecting frame is connected to the cover plate through the hinge. A handle is arranged on the cover plate.

[0008] Preferably, the ladder comprises a support member, a tread plate and a support beam. The support member is connected to the embedded part. Both ends of the tread plate are respectively connected to the support beam. One side of the support beam is connected to the support member. Nuts, washers and bolt A are respectively arranged at both ends of the tread plate. The nut is in threaded connection with bolt A. The washer is arranged between the nut and the support member. Bolt A is in threaded connection with the tread plate. The support member and the tread plate are tightly connected through the nut and bolt A.

[0009] Preferably, the embedded part comprises a connecting member and a fixing member. One side of the connecting member is connected to the fixing member. A through hole A and a screw sleeve are arranged on the connecting member. The through hole A and the screw sleeve are coaxially arranged. A bolt B is arranged on the screw sleeve. The embedded part is tightly connected to the ladder through bolt B.

[0010] Preferably, the support member comprises a connecting portion A and a connecting portion B. The connecting portion A and the connecting portion B are connected. A through hole B is arranged on the connecting portion A. A hole A is arranged on the connecting portion B. Both ends of the hole A are arc-shaped.

[0011] Preferably, the support beam is of a hollow structure. A plug is arranged at the top of the support beam. The plug is slidably connected to the support beam.

[0012] Preferably, a cavity, an exhaust hole and a positioning member are arranged on the plug. The exhaust hole is arranged on one side of the cavity. A protruding portion is arranged on one side of the plug.

[0013] Preferably, a plurality of holes B are arranged on the connecting frame.

[0014] Preferably, bolt A is a double-headed bolt.

[0015] Preferably, the connecting portion A and the connecting portion B are connected at an angle of 90-120 degrees.

[0016] The beneficial effects of the utility model are as follows:

[0017] Through the hinge connection between the cover plate and the connecting frame and the arrangement of the handle on the cover plate in the utility model, the cover plate structure can be conveniently and quickly opened and closed, and the operation efficiency is improved. The ladder is composed of a support member, a tread plate and a support beam, so that the ladder structure is simple and convenient to install. The utility model is applicable to the quick access from the ground to the basement, and has the advantages of simple installation, small occupied space and long service life. Description of the Drawings

[0018] Figure 1is a schematic structural view of the present utility model;

[0019] Figure 2 is a top view structural schematic of the ladder of the present utility model;

[0020] Figure 3 is a schematic structural view of the connecting frame of the present utility model;

[0021] Figure 4 is a schematic structural view of the cover plate of the present utility model;

[0022] Figure 5 is a schematic structural view of the cover plate structure of the present utility model;

[0023] Figure 6 is a schematic structural view of the connecting member of the present utility model;

[0024] Figure 7 is a schematic structural view of the support member of the present utility model;

[0025] Figure 8 is a schematic structural view of the plug of the present utility model;

[0026] In the figure: 1 - ladder, 2 - cover plate structure, 21 - connecting frame, 22 - cover plate, 23 - hinge, 24 - handle, 25 - hole B, 3 - embedded part, 31 - connecting member, 32 - fixing member, 33 - through hole A, 34 - screw sleeve, 35 - bolt B, 4 - support member, 41 - connecting part A, 42 - connecting part B, 43 - through hole B, 44 - hole A, 5 - tread plate, 51 - nut, 52 - gasket, 53 - bolt A, 6 - support beam, 7 - plug, 71 - cavity, 72 - exhaust hole, 73 - positioning member, 74 - protruding part. Detailed implementation manners

[0027] The technical solutions of the present utility model will be further described below, but the scope of protection claimed is not limited thereto.

[0028] Embodiment:

[0029] As Figures 1 to 8 shown, a manhole ladder structure includes a ladder 1 and a cover plate structure 2. The ladder 1 is connected to the wall through an embedded part 3. The cover plate structure 2 is arranged on the manhole. The cover plate structure 2 includes a connecting frame 21 and a cover plate 22. A hinge 23 is arranged on the connecting frame 21. The connecting frame 21 is hinged to the cover plate 22 through the hinge 23. Two cover plates 22 are provided. The connecting frame 21 is connected to the cover plate 22 through the hinge 23. A handle 24 is arranged on the cover plate 22 to facilitate opening and closing of the cover plate 22.

[0030] The ladder 1 includes a support member 4, a tread plate 5 and a support beam 6. The support member 4 is connected to the embedded part 3, and the other end of the support member 4 is welded to the support beam 6. Both ends of the tread plate 5 are respectively connected to the support beam 6. A plurality of tread plates 5 are provided for supporting human stepping. One side of the support beam 6 is connected to the support member 4. Nuts 51, washers 52 and bolts A53 are respectively provided at both ends of the tread plate 5. The nut 51 is threadedly connected to the bolt A53, and the washer 52 is arranged between the nut 51 and the support member 4. The bolt A53 is threadedly connected to the tread plate 5, and the support member 4 and the tread plate 5 are tightly connected by the nut 51 and the bolt A53. The nut 51 can be a combined cap nut. The bottom of the support beam 6 is connected to the ground after leveling with cement mortar.

[0031] The embedded part 3 includes a connecting member 31 and a fixing member 32. One side of the connecting member 31 is connected to the fixing member 32. Four fixing members 32 are provided and the fixing members 32 are connected to the wall. Through holes A33 and screw sleeves 34 are provided on the connecting member 31. The through holes A33 and the screw sleeves 34 are coaxially arranged. Bolts B35 are provided on the screw sleeves 34, and the embedded part 3 is tightly connected to the ladder 1 through the bolts B35. Two embedded parts 3 are connected to the ladder 1 at the same height to increase stability.

[0032] The support member 4 includes a connecting part A41 and a connecting part B42. The connecting part A41 and the connecting part B42 are connected. A through hole B43 is provided on the connecting part A41, and the bolt A53 passes through the corresponding hole on the through hole B43 to tightly connect the support member 4 and the tread plate 5. A hole A44 is provided on the connecting part B42. Both ends of the hole A44 are arc-shaped to facilitate fitting installation on the embedded part 3, and the bolt B35 passes through the hole A44 to tightly connect the support member 4 and the embedded part 3.

[0033] The support beam 6 has a hollow structure, and a plug 7 is provided at the top of the support beam 6. The plug 7 is slidably connected to the support beam 6. The material of the support beam 6 can be aluminum alloy, which has the advantages of light weight and high strength.

[0034] A cavity 71, an exhaust hole 72 and a positioning member 73 are provided on the plug 7. The cavity 71 is provided to facilitate reducing the mass of the plug 7. The exhaust hole 72 is provided on one side of the cavity 71. The exhaust hole 72 is used for exhausting air to facilitate the installation of the plug 7. The positioning member 73 is convenient for installation and positioning. A protruding part 74 is provided on one side of the plug 7. The provision of the protruding part 74 facilitates the interference connection between the plug 7 and the support beam 6 to increase the sealing performance.

[0035] A number of holes B25 are provided on the connecting frame 21, and the connecting frame 21 can be fixed around the manhole by passing expansion bolts through the holes B25.

[0036] The bolt A53 is a double-headed bolt, which is convenient for threaded connection with the nut 51 and the tread plate 5.

[0037] The connecting portion A41 and the connecting portion B42 are connected at an angle of 90 - 120 degrees. In this application, 106 degrees is preferred to conform to the acceptance situation of the ladder 1.

Claims

1. A manhole ladder structure, characterized in that: The invention comprises a ladder (1) and a cover plate structure (2), wherein the ladder (1) is connected to a wall through an embedded part (3), the cover plate structure (2) is arranged on a manhole, the cover plate structure (2) comprises a connecting frame (21) and a cover plate (22), a hinge (23) is arranged on the connecting frame (21), the connecting frame (21) is connected to the cover plate (22) through the hinge (23), and a handle (24) is arranged on the cover plate (22).

2. A manhole ladder structure as claimed in claim 1, characterized in that: The ladder (1) comprises a support member (4), a tread (5) and a support beam (6); the support member (4) is connected to the embedded member (3); both ends of the tread (5) are respectively connected to the support beam (6); one side of the support beam (6) is connected to the support member (4); nuts (51), washers (52) and bolts A (53) are respectively arranged at both ends of the tread (5); the nut (51) and the bolt A (53) are threadedly connected; the washer (52) is arranged between the nut (51) and the support member (4); the bolt A (53) is threadedly connected to the tread (5); and the support member (4) and the tread (5) are connected and fastened by the nut (51) and the bolt A (53).

3. A manhole ladder structure as claimed in claim 1, characterized in that: The embedded component (3) comprises a connecting component (31) and a fixing component (32); one side of the connecting component (31) is connected to the fixing component (32); a through hole A (33) and a screw sleeve (34) are provided on the connecting component (31); the through hole A (33) and the screw sleeve (34) are coaxially arranged; a bolt B (35) is provided on the screw sleeve (34); and the embedded component (3) is connected and fastened to the ladder (1) via the bolt B (35).

4. A manhole ladder structure as claimed in claim 2, characterized in that: The support member (4) comprises a connecting portion A (41) and a connecting portion B (42), wherein the connecting portion A (41) and the connecting portion B (42) are connected, a through hole B (43) is arranged on the connecting portion A (41), and a hole A (44) is arranged on the connecting portion B (42), and both ends of the hole A (44) are in arc shape.

5. A manhole ladder structure as claimed in claim 2, characterized in that: The support beam (6) is of a hollow structure, a plug (7) is arranged on the top of the support beam (6), and the plug (7) is slidably connected to the support beam (6).

6. A manhole ladder structure as claimed in claim 5, characterized in that: The plug (7) is provided with a cavity (71), an exhaust hole (72) and a positioning member (73); the exhaust hole (72) is provided on one side of the cavity (71); and a protrusion (74) is provided on one side of the plug (7).

7. A manhole ladder structure as claimed in claim 1, characterized in that: The connecting frame (21) is provided with a plurality of holes B (25).

8. A manhole ladder structure as claimed in claim 2, characterized in that: The bolt A (53) is a stud bolt.

9. A manhole ladder structure as claimed in claim 4, characterized in that: The connection portion A (41) and the connection portion B (42) are connected at an angle of 90-120 degrees.

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