Step ladder type tunnel inspection well mouth well lid

Abstract

The utility model discloses a step ladder type tunnel inspection well mouth well lid which comprises a fixed cross beam, a stair main beam, a rotating main shaft, a pedal plate, a balance weight rocker, a movable limiting block, a limiting strip, a fixed limiting block, a winding device and a cable, and the stair main beam is arranged on the fixed cross beam in a turnover mode; a rotating main shaft is arranged between the stair main beams, pedal plates and balance weight rockers are fixedly arranged on the rotating main shaft, and the length of the pedal plates is smaller than the distance between the balance weight rockers; movable limiting blocks are arranged on the left and right sides of the pedal; the limiting strip is fixedly arranged on the upper portion of the inner side of the stair girder. The fixed limiting block is arranged on the inner side of the front end of the stair girder. The winding device is fixedly connected with the front end of the stair main beam through a cable. The innovation point of the utility model is that a device capable of realizing the conversion between the well lid and the staircase is designed through moment of force, and is used for plugging a tunnel inspection well mouth and serving as the staircase, so that a worker can conveniently enter the inspection well.

Description

Technical Field

[0001] The utility model belongs to the technical field of manhole covers, in particular to a step-type tunnel inspection manhole cover. Background Art

[0002] Tunnel inspection wells mainly play the role of slowing down the water flow and water pressure in the pipeline, and enable operators to carry out daily inspections and clear blockages to ensure the normal use of the drainage system. In order to prevent large debris and heavy objects from falling and causing blockages in the inspection well, and to prevent pedestrians from slipping and falling, the inspection well mouths are usually sealed with steel covers. The steel cover is heavy and has a large friction with the ground, making it difficult to open. At the same time, there is a certain height difference inside the inspection well, and there is a lack of corresponding climbing devices, which affects the daily inspection and maintenance of maintenance personnel. It is necessary to set up a manhole cover for the tunnel inspection well that has both blocking and stair functions. Utility Model Content

[0003] Aiming at the above-mentioned deficiencies in the prior art, the utility model invents a step-type tunnel inspection well cover.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A step-type tunnel inspection manhole cover, comprising a fixed crossbeam, a stair main beam, a rotating spindle, a foot pedal, a counterweight rocker, a movable limit block, a limit bar, a fixed limit block, a winch device and a cable, wherein the fixed crossbeam is fixedly arranged at the bottom inside the inspection manhole, and the stair main beams are flipably arranged on the left and right sides of the fixed crossbeam; a rotating spindle is arranged at equal intervals between the two stair main beams, and foot pedals are fixedly arranged on the rotating spindle, and the counterweight rocker is fixedly arranged on both sides of the rotating spindle, and the length of the foot pedals is smaller than the spacing between the counterweight rocker; movable limit blocks for limiting the flipping of the counterweight rocker are arranged on the left and right sides of the foot pedal according to the flipping angle of the stair main beam; the limit bar is fixedly arranged on the upper part of the inner side of the stair main beam, and the fixed limit block is arranged on the inner side of the front end of the stair main beam; the winch device is fixedly arranged above the inspection manhole, and the winch device is fixedly connected to the middle or front end of the stair main beam through a cable.

[0006] The innovation of the present invention is that a device capable of realizing conversion between a manhole cover and a staircase is designed through torque, so as to achieve the purpose of blocking the tunnel inspection manhole opening and serving as a staircase to facilitate staff to enter the inspection manhole.

[0007] Furthermore, the angle between the foot pedal and the counterweight rocker is a right angle, which ensures that the foot pedal can always remain horizontal when the counterweight rocker is vertically downward, making it convenient to step on.

[0008] Furthermore, the torque of the counterweight rocker is greater than the torque of the foot pedal, which ensures that the counterweight rocker is always vertically downward when the main beam of the staircase flips downward from a horizontal state.

[0009] Furthermore, a counterweight is provided at the front end of the counterweight rocker to ensure that its torque is greater than the torque generated by the pedal.

[0010] Furthermore, the hoisting device is equipped with a remote control via a wireless connection, and the staff can control the opening or closing of the manhole cover through the remote control from outside the inspection well mouth without locking it.

[0011] The advantages of the utility model are: the utility model is installed at the tunnel inspection manhole, and in the initial state, it plays the role of closing the tunnel inspection manhole; during inspection, a step ladder can be formed by lowering the device, which is convenient for maintenance personnel to step on and inspect; the device integrates an inspection manhole cover that is easy to open and close and a step ladder for going down the manhole to improve the efficiency of daily inspection and maintenance. The device is simple and practical, and takes into account the functions of inspecting the manhole cover and ensuring that inspectors can go down the manhole for inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This utility model is a three-dimensional step-type tunnel inspection well cover Figure 1 ;

[0013] Figure 2 This utility model is a three-dimensional step-type tunnel inspection well cover Figure 2 ;

[0014] Figure 3 This is a three-dimensional diagram of the rotating main shaft and its connecting parts in a step-type tunnel inspection manhole cover of the utility model;

[0015] Figure 4 This is a structural diagram of the installation of a step-type tunnel inspection well cover of the utility model; DETAILED DESCRIPTION

[0016] The following is a detailed description of the present invention with reference to the accompanying drawings:

[0017] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by "length", "width", "front" and "back" are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, and a specific orientation structure and operation. Therefore, they cannot be understood as a limitation on the present invention.

[0018] like Figure 1-4As shown, a step-type tunnel manhole cover includes a fixed crossbeam 1, a stair main beam 2, a rotating spindle 3, a foot pedal 4, a counterweight rocker 5, a movable limit block 6, a limit bar 7, a fixed limit block 8, a hoisting device 9, and a cable 10. The fixed crossbeam 1 is fixedly installed at the bottom inside the manhole. The stair main beams 2 are reversibly installed on the left and right sides of the fixed crossbeam 1. The main function of the fixed crossbeam 1 is to install the stair main beam 2 and provide a mounting and connection location for it. The fixed crossbeam 1 can also be replaced by a hinged connection block.

[0019] A rotating spindle 3 is evenly spaced between the two stair main beams 2. Both ends of the rotating spindle 3 are connected to the stair main beams 2 via bearings. Footrests 4 and counterweight rockers 5 are fixed to the rotating spindle 3, forming a right angle between the footrests 4 and the counterweight rockers 5. The counterweight rockers 5 are fixed on either side of the rotating spindle 3. The length of the footrests 4 is shorter than the spacing between the counterweight rockers 5, with a margin of 4 to 6 mm between the two lengths. This ensures that no matter how the footrests 4 are tilted, they will not be interfered with by the counterweight rockers 5.

[0020] Movable stoppers 6 are provided on the left and right sides of the footrest 4, depending on the tilt angle of the stair main beam 2, to limit the rotation of the counterweight rocker 5. Because the tilt angle of the stair main beam 2 varies, the overlap position of the previous counterweight rocker 5 with the next footrest 4 varies. That is, the horizontal spacing between the vertically downward counterweight rocker 5 and the rotating spindle 3 changes with the tilt angle of the stair main beam 2, with the larger the angle, the smaller the spacing. A counterweight is provided at the front end of the counterweight rocker 5, which consists of a rocker and a counterweight. The torque of the counterweight rocker 5 is greater than the torque of the footrest 4, ensuring that the counterweight rocker 5 remains vertically downward during the tilt of the stair main beam 2 from horizontal to downward.

[0021] The limiting strip 7 is fixedly mounted on the upper inner side of the stair main beam 2 and is mainly used to prevent the footrest 4 from turning over after being parallel to the stair main beam 2. The fixed limiting block 8 is mounted on the inner front side of the stair main beam 2 to limit the vertical position of the bottom counterweight rocker 5 and prevent the counterweight rocker 5 from turning over after the footrest 4 is placed on the stair main beam 2.

[0022] The hoisting device 9 is fixedly installed above the inspection manhole, and a corresponding mounting frame is provided on the wall of the tunnel. The hoisting device 9 is fixedly connected to the middle or front end of the stair main beam 2 through a cable 10. The operation of the hoisting device 9 can control the retraction or lowering of the stair main beam 2, thereby realizing the conversion between the manhole cover and the stairs. The hoisting device 9 is wirelessly connected to a remote control, and the staff can control the opening or closing of the manhole cover by the remote control from outside the manhole.

[0023] Although the above describes and illustrates the specific embodiments of the present invention in detail, it should be noted that various changes and modifications can be made to the above embodiments without departing from the spirit of the present invention and the scope of the appended claims.

Claims

1. A step-type tunnel inspection well cover, characterized in that: The invention comprises a fixed crossbeam (1), a staircase main beam (2), a rotating main shaft (3), a foot pedal (4), a counterweight rocker (5), a movable limit block (6), a limit bar (7), a fixed limit block (8), a hoisting device (9) and a cable (10); the fixed crossbeam (1) is fixedly arranged at the bottom of the inner side of the inspection well opening, and the left and right sides of the fixed crossbeam (1) are flippably provided with the staircase main beams (2); A rotating main shaft (3) is arranged at equal intervals between two stair main beams (2), a foot pedal (4) is fixedly arranged on the rotating main shaft (3), and the counterweight rocker (5) is fixedly arranged on both sides of the rotating main shaft (3), and the length of the foot pedal (4) is less than the spacing between the counterweight rocker (5); The left and right sides of the footrest (4) are provided with movable limit blocks (6) for limiting the turning of the counterweight rocker (5) according to the turning angle of the stair main beam (2); The limit strip (7) is fixedly arranged on the upper portion of the inner side of the stair main beam (2), and the fixed limit block (8) is arranged on the inner side of the front end of the stair main beam (2); The hoisting device (9) is fixedly arranged above the inspection well opening, and the hoisting device (9) is fixedly connected to the middle or front end of the stair main beam (2) through a cable (10).

2. The step-type tunnel inspection well cover according to claim 1, characterized in that: The included angle between the foot pedal (4) and the counterweight rocker (5) is a right angle.

3. The step-type tunnel inspection well cover according to claim 2, characterized in that: The torque of the counterweight rocker (5) is greater than the torque of the foot pedal (4).

4. The step-type tunnel inspection well cover according to claim 3 is characterized in that: The front end of the counterweight rocker (5) is provided with a counterweight.

5. The step-type tunnel inspection well cover according to claim 4, characterized in that: The hoisting device (9) is wirelessly connected and provided with a remote controller.

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