An anti-fall bracket

Abstract

The utility model discloses an anti-fall bracket, comprising a manhole cover seat and a main beam, wherein a plurality of support rods are fixedly arranged between the main beams, and one end of the main beam is hingedly connected to the mounting base; the other end of the main beam is provided with a sliding lock card for locking with the manhole cover seat; the anti-fall bracket of this structure can be used in conjunction with any manhole cover and manhole of any standard; the manhole seat of the manhole cover is fixedly connected to the mounting base of the anti-fall bracket, the main beam of the anti-fall bracket is connected to the mounting base by a hinge, and a sliding lock card is provided at the other end of the main beam of the anti-fall bracket, and the sliding lock card is pulled by a pull-back spring on the bearing bracket to perform a mechanical sliding pin insertion and locking action. When opening, the sliding lock card is manually opened and then opened upward, and the operation is simple and safe. Its design structure gives the manhole of the manhole cover the maximum entry and exit space, prevents people from falling when the outer manhole cover is opened, damaged, or offset, causing unsafe factors, avoiding accidental falling injuries to people and protecting life safety.

Description

Technical Field

[0001] The utility model relates to the technical field of sewer protection, and in particular to an anti-falling bracket. Background Art

[0002] Many inspection wells, valve wells, communication wells, etc. are used in the pipeline network, and each well is equipped with a manhole cover. When the manhole cover is opened, there is a vertical descending space. When the manhole cover is opened, displaced, damaged, or the water level in the well is too high and the manhole cover floats, there is a risk of people or objects falling.

[0003] There are many measures using anti-fall nets. Most of the anti-fall nets are in the form of hanging with woven ropes. Even if the person cannot fall into the well when their function is working, they will cause certain damage to people or objects. The anti-fall nets will lose their strength and be damaged in a humid environment for a long time and cannot function. It is extremely inconvenient to remove and hang them when people enter and exit, and falling accidents are prone to occur during operation. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art, and to propose an anti-fall bracket, comprising a manhole cover seat, two main beams, a plurality of support rods fixedly arranged between the two main beams, one end of the main beam is provided with a mounting base, the main beam is hingedly connected to the mounting base; the other end of the mounting base is fixedly connected to the manhole cover seat; the other end of the main beam is provided with a sliding lock card for locking with the manhole cover seat.

[0005] Preferably, the sliding lock card comprises an upper pressing tongue and a lower inserting tongue; the upper pressing tongue and the lower inserting tongue are respectively arranged on the upper and lower sides of the inner edge of the manhole cover seat.

[0006] Preferably, the upper pressure tongue is integrally formed with the main beam.

[0007] Preferably, the upper pressure tongue is welded to the main beam.

[0008] Preferably, a movable support is provided at the tail of the lower plug-in tongue, a sliding through hole is provided on the side of the movable support, and a No. 1 limit column, a No. 2 limit column and a fixed column are provided in the sliding through hole; the No. 1 limit column and the No. 2 limit column are fixedly arranged on the movable support, and the fixed column is fixedly arranged on the main beam; and a pull-back spring is provided between the No. 1 limit column and the fixed column.

[0009] Preferably, auxiliary support frames are also provided on both sides of the main beam.

[0010] Preferably, the anti-fall bracket can be made of one or more materials such as aluminum, iron, steel, stainless steel, and aviation plastic.

[0011] Preferably, it is manufactured in various forms such as welding, casting, bolt assembly, and interlaced riveting.

[0012] Compared with the existing technology, the beneficial effects of the utility model are: the anti-fall bracket of this structure can be used in conjunction with any standard manhole cover and manhole; the manhole seat of the manhole cover is fixedly connected to the mounting base of the anti-fall bracket, the main beam of the anti-fall bracket is connected to the mounting base by a hinge, and a sliding lock card is arranged at the other end of the main beam of the anti-fall bracket. The sliding lock card is pulled by a pull-back spring on the load-bearing bracket to perform a mechanical sliding pin insertion and locking action. When opening, the sliding lock card is manually opened and then opened upward. The operation is simple and safe. The design structure provides the maximum entry and exit space for the manhole of the manhole cover, preventing people from falling and causing unsafe factors when the outer manhole cover is opened, damaged or displaced, avoiding accidental falling injuries of people and protecting life safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a schematic diagram of the overall structure of an anti-fall bracket.

[0014] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0015] In the figure: manhole cover seat 1, mounting base 2, main beam 3, support rod 4, upper pressure tongue 51, lower insertion tongue 52, movable support 53, sliding through hole 54, No. 1 limit column 55, No. 2 limit column 56, fixed column 57, and pull-back spring 58. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0017] Referring to the schematic diagram, the present embodiment provides an anti-fall bracket, including a manhole cover seat 1, two main beams 3, a plurality of support rods 4 are fixedly arranged between the two main beams 3, a mounting base 2 is provided at one end of the main beam, and the main beam 3 is hingedly connected to the mounting base 2; the other end of the mounting base 2 is fixedly connected to the manhole cover seat 1; the other end of the main beam 3 is provided with a sliding lock card for locking with the manhole cover seat 1.

[0018] Preferably, the sliding lock card includes an upper pressing tongue 51 and a lower inserting tongue 52; the upper pressing tongue 51 and the lower inserting tongue 52 are respectively arranged on the upper and lower sides of the inner edge of the manhole cover seat 1.

[0019] Preferably, the upper pressing tongue 51 is integrally formed with the main beam 3 .

[0020] Preferably, the upper pressing tongue 51 is welded to the main beam 3 .

[0021] Preferably, a movable support 53 is provided at the tail end of the lower plug tongue 52, a sliding through hole 54 is provided on the side of the movable support 53, and a No. 1 limiting column 55, a No. 2 limiting column 56 and a fixed column 57 are provided in the sliding through hole 54; the No. 1 limiting column 55 and the No. 2 limiting column fixed 56 are arranged on the movable support 53, and the fixed column 57 is fixedly arranged on the main beam 3; and a pull-back spring 58 is arranged between the No. 1 limiting column 55 and the fixed column 57.

[0022] Preferably, auxiliary support frames 31 are also provided on both sides of the main beam 3 .

[0023] Preferably, the material of each part of the anti-fall bracket can be: aluminum, iron, steel, stainless steel, aviation plastics and other materials or one or more

[0024] Preferably, the connection between the parts of the anti-fall bracket can be made in various forms such as welding, casting, bolt assembly, interlaced riveting, etc.

[0025] Working principle:

[0026] First, install the anti-fall bracket as a whole on the manhole seat of the manhole cover, then pull the movable support 3, and the movable support 3 drives the lower tongue to move. When the entire bracket is buckled on the manhole, release the movable support 3, and the movable support 3 moves under the action of the return spring. At this time, the lower tongue is inserted into the lower part of the edge of the manhole seat of the manhole cover; it plays a fixing role on the entire anti-fall bracket.

[0027] In the above embodiment, the anti-fall bracket of this structure can be used in conjunction with any standard manhole cover and manhole; the manhole seat of the manhole cover is fixedly connected to the mounting base of the anti-fall bracket, the main beam of the anti-fall bracket is connected to the mounting base by a hinge, and a sliding lock card is arranged at the other end of the main beam of the anti-fall bracket. The sliding lock card is pulled by a pull-back spring on the load-bearing bracket to perform a mechanical sliding pin insertion and locking action. When opening, the sliding lock card is manually opened and then opened upward. The operation is simple and safe. Its design structure provides the maximum entry and exit space for the manhole of the manhole cover, preventing people from falling and causing unsafe factors when the outer manhole cover is opened, damaged or displaced, thereby avoiding accidental falling injuries and protecting life safety.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An anti-fall bracket, characterized in that: The invention comprises a manhole cover seat (1), two main beams (3), a plurality of support rods (4) are fixedly arranged between the two main beams (3), one end of the main beam (3) is provided with a mounting base (2), and the main beam (3) is hingedly connected to the mounting base (2); the other end of the mounting base (2) is fixedly connected to the manhole cover seat (1); and the other end of the main beam (3) is provided with a sliding lock card for locking with the manhole cover seat (1).

2. The anti-fall bracket according to claim 1, characterized in that: The sliding lock comprises an upper pressing tongue (51) and a lower inserting tongue (52); the upper pressing tongue (51) and the lower inserting tongue (52) are respectively arranged on the upper and lower sides of the inner edge of the manhole cover seat (1).

3. The anti-fall bracket according to claim 2, characterized in that: The upper pressing tongue (51) and the main beam (3) are integrally formed.

4. The anti-fall bracket according to claim 2, characterized in that: The upper pressing tongue (51) is welded to the main beam (3).

5. The anti-fall bracket according to claim 2, characterized in that: A movable support (53) is arranged at the tail of the lower plug tongue (52); a sliding through hole (54) is arranged on the side of the movable support (53); a No. 1 limiting column (55), a No. 2 limiting column (56) and a fixed column (57) are arranged in the sliding through hole (54); the No. 1 limiting column (55) and the No. 2 limiting column (56) are fixedly arranged on the movable support (53); the fixed column (57) is fixedly arranged on the main beam (3); and a pull-back spring (58) is arranged between the No. 1 limiting column (55) and the fixed column (57).

6. The anti-fall bracket according to claim 1, characterized in that: Auxiliary support frames (31) are also provided on both sides of the main beam (3).

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