Crawling ladder special for municipal underground pipe gallery

Abstract

The utility model relates to the technical field of crawling ladders for pipe galleries, in particular to a special crawling ladder for municipal underground pipe galleries, which comprises a supporting chassis, the supporting chassis is of a circular structure, four universal wheels with brakes are fixedly connected to the lower end of the supporting chassis, and four limiting and reinforcing devices are in threaded connection with the outer portion of the upper end of the supporting chassis. The four limiting and reinforcing devices are annularly distributed at equal intervals, and the four universal wheels with brakes are annularly distributed at equal intervals. According to the crawling ladder special for the municipal underground pipe gallery, the four universal wheels with brakes are arranged at the lower end of the supporting base plate, the whole crawling ladder can be conveniently moved, the rotating wheels drive the threaded rods to rotate by rotating the rotating wheels, the threaded rods are in threaded connection with the supporting base plate, the threaded rods can move downwards, and when the crawling ladder moves, the crawling ladder is convenient to move. The rubber supporting legs at the lower ends of the threaded rods are in contact with the ground, so that the stability of the crawling ladder during use can be improved, and displacement and shaking of the crawling ladder are avoided.

Description

Technical Field

[0001] This utility model relates to the field of ladder technology for utility tunnels, and in particular to a special ladder for municipal underground utility tunnels. Background Technology

[0002] Municipal underground utility tunnels are structures built underground in cities to accommodate two or more types of urban engineering pipelines and their ancillary facilities. They integrate various pipeline structures and ancillary equipment, including municipal, power, communication, broadcasting and television, gas, heating, and water supply and drainage systems, and are simultaneously equipped with municipal utilities such as fire protection, power supply, lighting, monitoring and alarm systems, ventilation, drainage, and signage. This facility not only meets the usage and maintenance needs of pipeline companies but is also an indispensable and vital infrastructure for ensuring the normal operation of the city. In underground utility tunnels, ladders are often needed to facilitate the inspection and maintenance of equipment at height. However, existing ladders are inconvenient to move and have limited functionality, making them unsuitable for the use of underground utility tunnels. Therefore, we have introduced a special ladder for municipal underground utility tunnels. Utility Model Content

[0003] The main purpose of this utility model is to provide a special ladder for municipal underground utility tunnels, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A special ladder for municipal underground utility tunnels includes a support chassis, which is circular in structure. Four casters with brakes are fixedly connected to the lower end of the support chassis. Four limiting and reinforcing devices are threadedly connected to the upper end of the support chassis. The four limiting and reinforcing devices are distributed in a ring at equal distances. The four casters with brakes are also distributed in a ring at equal distances. The four casters with brakes and the four limiting and reinforcing devices are staggered. A ladder mechanism is fixedly connected to the middle of the upper end of the support chassis.

[0006] Preferably, the climbing mechanism includes four main support rods arranged in a ring at equal intervals. The four main support rods are fixedly connected to a plurality of ring-shaped handrails, which are distributed at equal intervals. The four main support rods are fixedly connected to two nets.

[0007] Preferably, the four main support rods are fixedly connected to the upper end of the support chassis.

[0008] Preferably, the upper end of the support chassis has four threaded holes.

[0009] Preferably, the limiting and reinforcing device includes a threaded rod, with a rotating wheel fixedly connected to the upper end of the threaded rod and a rubber support leg fixedly connected to the lower end of the threaded rod. The rubber support leg has a structure that is narrower at the top and wider at the bottom.

[0010] Preferably, the outer surface of the rotating wheel has a corrugated structure.

[0011] Preferably, the threaded rod is threadedly connected to the threaded hole, the rubber support leg is located at the lower part of the support chassis, and the rotating wheel is located at the upper part of the support chassis.

[0012] This utility model has the following beneficial effects:

[0013] 1. In this utility model, by setting a climbing ladder mechanism on the upper end of the support chassis, and the climbing ladder mechanism is composed of four main support rods and several ring handrails, the several ring handrails are welded together between the four main support rods, and the several ring handrails are used as handrails and ladders. It is not only simple in structure, but also has strong stability, which is convenient for the use of underground pipe corridors. By setting two net bags between the four main support rods, the staff can temporarily place the tools in the net bags when climbing to operate and maintain, which greatly improves the convenience of maintenance and makes it easy to use.

[0014] 2. In this utility model, four universal casters with brakes are installed at the lower end of the support chassis to facilitate the movement of the entire ladder. By rotating the casters, the casters drive the threaded rod to rotate. The threaded rod is threadedly connected to the support chassis, which causes the threaded rod to move downward. At the same time, the rubber support leg at the lower end of the threaded rod will contact the ground, thereby improving the stability of the ladder during use and preventing the ladder from shifting and shaking. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a special ladder for municipal underground utility tunnels according to this utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure of the support chassis of a special climbing ladder for municipal underground utility tunnels according to this utility model;

[0017] Figure 3 This is a schematic diagram of the overall structure of a limiting and reinforcing device for a special ladder for municipal underground utility tunnels according to this utility model;

[0018] Figure 4 This is a schematic diagram of the overall structure of the climbing mechanism of a special climbing ladder for municipal underground utility tunnels according to this utility model.

[0019] In the diagram: 1. Support chassis; 2. Climbing mechanism; 3. Casters with brakes; 4. Limiting and reinforcing device; 11. Threaded hole; 21. Main support rod; 22. Net bag; 23. Ring handrail; 41. Threaded rod; 42. Rotating wheel; 43. Rubber support leg. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Please see Figure 1-4 This utility model provides a technical solution:

[0024] A special ladder for municipal underground utility tunnels includes a support chassis 1, which is circular in structure. Four casters 3 with brakes are fixedly connected to the lower end of the support chassis 1. Four limiting and reinforcing devices 4 are threadedly connected to the upper end of the support chassis 1. The four limiting and reinforcing devices 4 are distributed in a ring at equal distances. The four casters 3 with brakes are also distributed in a ring at equal distances. The four casters 3 with brakes and the four limiting and reinforcing devices 4 are staggered. A ladder mechanism 2 is fixedly connected to the middle of the upper end of the support chassis 1.

[0025] In this embodiment, the climbing mechanism 2 includes a main support rod 21, four main support rods 21 are arranged in a ring at equal intervals, and several ring handrails 23 are fixedly connected to the four main support rods 21. The ring handrails 23 are distributed at equal intervals, and two net bags 22 are fixedly connected to the four main support rods 21. The four main support rods 21 are fixedly connected to the upper end of the support base 1. Four threaded holes 11 are opened at the upper end of the support base 1.

[0026] With the above solution, the climbing mechanism 2 consists of four sturdy and stable main support rods 21 and several ring handrails 23. The ring handrails 23 are easy for workers to grip, and they also serve as steps of the ladder, simplifying the structure and reducing manufacturing costs.

[0027] In this embodiment, the limiting and reinforcing device 4 includes a threaded rod 41, a rotating wheel 42 is fixedly connected to the upper end of the threaded rod 41, and a rubber support leg 43 is fixedly connected to the lower end of the threaded rod 41. The rubber support leg 43 has a structure that is narrow at the top and wide at the bottom. The outer surface of the rotating wheel 42 has a corrugated structure. The threaded rod 41 is threadedly connected to the threaded hole 11. The rubber support leg 43 is located at the lower part of the support base 1, and the rotating wheel 42 is located at the upper part of the support base 1.

[0028] The above solution allows the threaded rod 41 to be easily driven to rotate by rotating the rotating wheel 42. Because the threaded rod 41 is threadedly connected to the supporting chassis 1, it moves smoothly downwards during rotation. As the threaded rod 41 descends, its lower rubber support leg 43 gradually comes into close contact with the ground, forming a stable support surface and effectively preventing displacement and swaying caused by uneven ground or external forces.

[0029] It should be noted that this utility model describes a special climbing ladder for municipal underground utility tunnels. By setting a climbing mechanism 2 on the upper end of the support base 1, the climbing mechanism 2 consists of four sturdy and stable main support rods 21 and several ring handrails 23. The ring handrails 23 are easy for workers to grip and also serve as steps of the ladder, simplifying the structure, reducing manufacturing costs, and significantly improving the stability and durability of the climbing ladder, making it very suitable for use in complex environments such as underground utility tunnels. Two nets 22 are set between the four main support rods 21. When workers are climbing or performing maintenance, they can conveniently place their tools, parts, or small equipment temporarily in the nets 22, thereby freeing their hands and allowing them to focus on the maintenance work, making the entire maintenance process smoother and more efficient. Four universal casters 3 with brakes are installed at the lower end of the support base 1, allowing the climbing ladder to move easily when needed and stop stably after reaching the designated position. By rotating the rotating wheel 42, the threaded rod 41 can be easily driven to rotate. Because the threaded rod 41 is threadedly connected to the support base 1, the threaded rod 41 will move downward smoothly during rotation. As the threaded rod 41 descends, the rubber support leg 43 at its lower end will gradually come into close contact with the ground, forming a stable support surface. This effectively avoids displacement and shaking caused by uneven ground or external forces, and also provides workers with a safer and more reliable working environment.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A special ladder for municipal underground utility tunnels, comprising a supporting chassis (1), characterized in that: The supporting chassis (1) has a circular structure. Four universal wheels (3) with brakes are fixedly connected to the lower end of the supporting chassis (1). Four limiting and reinforcing devices (4) are threadedly connected to the upper end of the supporting chassis (1). The four limiting and reinforcing devices (4) are distributed in a ring at equal distances. The four universal wheels (3) with brakes are distributed in a ring at equal distances. The four universal wheels (3) with brakes and the four limiting and reinforcing devices (4) are staggered. A climbing mechanism (2) is fixedly connected to the middle of the upper end of the supporting chassis (1). The climbing mechanism (2) includes a main support rod (21), four main support rods (21) are arranged in a ring at equal intervals, and the four main support rods (21) are fixedly connected to a number of ring handrails (23), the number of ring handrails (23) are distributed at equal intervals, and the four main support rods (21) are fixedly connected to two net bags (22).

2. The special ladder for municipal underground utility tunnels according to claim 1, characterized in that: The four main support rods (21) are fixedly connected to the upper end of the support chassis (1).

3. The special ladder for municipal underground utility tunnels according to claim 1, characterized in that: The upper end of the support chassis (1) has four threaded holes (11).

4. The special ladder for municipal underground utility tunnels according to claim 1, characterized in that: The limiting and reinforcing device (4) includes a threaded rod (41), with a rotating wheel (42) fixedly connected to the upper end of the threaded rod (41) and a rubber support leg (43) fixedly connected to the lower end of the threaded rod (41). The rubber support leg (43) has a structure that is narrow at the top and wide at the bottom.

5. A special ladder for municipal underground utility tunnels according to claim 4, characterized in that: The outer surface of the rotating wheel (42) has a corrugated structure.

6. A special ladder for municipal underground utility tunnels according to claim 4, characterized in that: The threaded rod (41) is threadedly connected to the threaded hole (11), the rubber support leg (43) is located at the lower part of the support chassis (1), and the rotating wheel (42) is located at the upper part of the support chassis (1).

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