Crawling ladder for shaft of inspection well

Abstract

The utility model discloses an inspection well shaft ladder stand, and relates to the technical field of concrete shaft ladder stands. Comprising a pedal piece arranged on the inner wall of an inspection well shaft through a positioning rod and rotationally connected with the positioning rod through a retraction limiting mechanism; the positioning rod penetrates through the side wall of the inspection well shaft and is respectively connected with the inner base plate and the outer base plate; the inner base plate is arranged on the outer side wall of the inspection well shaft; and the outer base plate is arranged on the inner side wall of the inspection well shaft. Through the arrangement of the retraction limiting mechanism, the pedal part can be rotationally installed on the two positioning rods, through upward rotation of the pedal part, the occupied space of the pedal part in the non-use state can be reduced, and a worker can conveniently use the pedal part in an inspection well shaft. The problems that traditional crawling ladders and step ladders are large in occupied shaft space, and workers cannot move in a shaft conveniently are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete shaft ladders, in particular to a shaft ladder for inspection wells. Background Art

[0002] With the development of urban construction, underground drainage and pipeline systems have spread to every corner of the city. To facilitate the maintenance and inspection of underground drainage and pipeline systems in the future, inspection wells are reserved and arranged at nodes to facilitate maintenance and inspection by workers. The structures of inspection well shafts used in my country mainly include prefabricated assembly, concrete block, cast-in-place, cast-in-place and prefabricated combination types. To facilitate workers' movement within the shaft, ladders are required to assist workers' movement within the shaft.

[0003] The traditional manhole ladder is a ladder-like structure fixedly installed in the manhole. Although this structure can meet the needs of workers in the manhole, due to the large size of this type of ladder, it will seriously occupy the space of the manhole when in use, making it inconvenient for workers to move and carry tools in the manhole during maintenance. To solve the above problems of traditional ladders, people have designed a ductile iron ladder, that is, by using multiple ladders to replace the traditional ladder. Although this structure can save space in the manhole to a certain extent, because the ladder is fixedly installed in the manhole and has a cantilever structure, it still takes up a large space when in use, making it inconvenient for workers to move and carry tools in the manhole during maintenance.

[0004] Based on this, the utility model provides a novel inspection well shaft ladder to solve the problems existing in the above-mentioned prior art. Utility Model Content

[0005] In view of this, the main purpose of the present invention is to provide an inspection shaft ladder to solve the problem that traditional ladders and step ladders occupy a large shaft space and are inconvenient for workers to move in the shaft.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0007] A manhole ladder is provided, which is arranged on the inner side of the wall of the manhole ladder, and comprises:

[0008] The pedal member is arranged on the inner wall of the inspection shaft through a positioning rod and is rotationally connected to the positioning rod through a retraction limit mechanism;

[0009] The positioning rod passes through the side wall of the inspection well and is connected to the inner pad and the outer pad respectively;

[0010] An inner pad is provided on the outer side wall of the inspection well shaft;

[0011] The outer pad is arranged on the inner wall of the inspection well shaft.

[0012] In a preferred embodiment, the retraction limit mechanism is provided in the positioning rod and includes:

[0013] A threaded adjustment member is disposed in the positioning rod and is threadedly connected to the positioning rod;

[0014] The slider is slidably arranged in the positioning rod and is connected to the threaded adjustment member through a spring. The other end of the slider is connected to the pedal member through a twisted wire.

[0015] In a preferred embodiment, the strands are eccentrically connected to the pedal element and are connected to the upper side of the pedal element.

[0016] In a preferred embodiment, the outer end of the positioning rod is further threadedly connected to a dust cap.

[0017] In a preferred embodiment, the pedal member is a U-shaped pedal, which is connected to the end of the positioning rod through a rotating shaft, and a clearance groove is provided on the upper side of the end rod of the positioning rod to match the pedal member; a support plate is provided on the lower side of the end rod of the positioning rod to match the pedal member.

[0018] In a preferred embodiment, the pedal member is further provided with a structural net and a hand grip, wherein the structural net is provided in the middle of the structure of the pedal member; and the hand grip is provided at the free end of the pedal member.

[0019] In a preferred embodiment, an extension plate is further provided on the outer side of the free end of the pedal member, and a footrest is provided at the end of the extension plate.

[0020] In a preferred embodiment, the positioning rod is also threadedly connected with an extrusion nut and a first tightening nut, and the extrusion nut and the first tightening nut are respectively located on both sides of the inner pad, and a rubber waterproof pad is also provided on the side of the first tightening nut close to the side wall of the inspection well shaft.

[0021] In a preferred embodiment, the positioning rod is further threadedly connected to a second tightening nut, the second tightening nut matches the outer pad, and a rubber waterproof pad is provided on the side of the outer pad close to the inner wall of the inspection well shaft.

[0022] In a preferred embodiment, the positioning rod is further provided with an outer sleeve made of rubber.

[0023] Compared with the prior art, the utility model provides a manhole ladder, which has the following beneficial effects:

[0024] 1. By setting up the retraction limit mechanism, the pedal part can be rotatably installed on the two positioning rods. By rotating the pedal part upward, the space occupied by the pedal part when not in use can be reduced, making it convenient for workers to use it in the inspection well.

[0025] 2. Through the setting of the inner pad and the outer pad, the pedal part and the positioning rod can be effectively fixed in the inspection well shaft. At the same time, through the assembled structure setting, the pedal part and the positioning rod can be easily disassembled and maintained during use.

[0026] 3. The structural setting of the pedal parts makes it easy to assist the workers in moving in the inspection shaft by pedaling or pulling with hands, which can effectively ensure the safety of the workers; it solves the problem that traditional ladders and step ladders occupy a large space in the shaft and are inconvenient for workers to move in the shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained from these drawings without paying any creative work.

[0028] Figure 1 This is a diagram showing the use of the utility model's inspection well shaft ladder from a bird's-eye view;

[0029] Figure 2 This is a side view of the use status of the inspection well shaft ladder of the utility model;

[0030] Figure 3 This is a structural diagram of the retraction limit mechanism of the utility model;

[0031] Figure 4 This is a cross-sectional view of the positioning rod of the utility model;

[0032] Figure 5 It is a top view of the pedal component of the present invention.

[0033]

Main component symbol description

[0034] 1. Pedal assembly; 2. Positioning rod; 3. Inner pad; 4. Dust cap; 5. Extrusion nut; 6. First tightening nut; 7. Outer pad; 8. Second tightening nut; 9. Rubber waterproof pad; 10. Extension plate; 11. Footrest; 12. Outer sleeve; 13. Threaded adjustment member; 14. Spring; 15. Slider; 16. Rotating shaft; 17. Connecting seat; 18. Stranded wire; 19. Gap; 20. Support plate; 21. Structural net; 22. Hand grip. DETAILED DESCRIPTION

[0035] The structure of the inspection well shaft ladder is further described in detail below in conjunction with the accompanying drawings and embodiments of the present utility model.

[0036] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments of the present application. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0038] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0039] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0040] As the instruction manual Figure 1-Figure 5 As shown, the utility model provides a technical solution:

[0041] A manhole ladder is provided, which is used to be installed on the inner side of the wall of the manhole ladder to assist workers in moving in the manhole, and includes a pedal member 1, a positioning rod 2, an inner pad 3 and an outer pad 7; the pedal member 1 is installed on the inner wall of the manhole through the positioning rod 2, and is rotatably connected to the positioning rod 2 through a retraction limit mechanism; the positioning rod 2 is arranged through the side wall of the manhole, and is respectively connected to the inner pad 3 and the outer pad 7, for fixing and positioning the pedal member 1; the inner pad 3 is arranged on the outer side wall of the manhole, for fixing the positioning rod 2 extending to one side of the outer side wall of the manhole; the outer pad 7 is arranged on the inner side wall of the manhole, for fixing the positioning rod 2 extending to one side of the inner side wall of the manhole, to ensure the integrity between the positioning rod 2, the inner pad 3 and the outer pad 7 after installation.

[0042] In the above description, by setting the inner pad 3 and the outer pad 7, the two positioning rods 2 can be fixedly installed on the side wall of the inspection well shaft, ensuring the integrity of the positioning rods 2 and the inspection well shaft after installation; by setting the retraction limit mechanism, the pedal member 1 is rotatably installed on the two positioning rods 2, and the pedal member 1 can be rotated upward during use to reduce the space occupied by the pedal member 1 in the non-use state, thereby facilitating the movement of workers in the inspection well shaft.

[0043] like Figure 3 and Figure 4 As shown, the pedal member 1 is a U-shaped pedal, which is connected to the end of the positioning rod 2 through a high-strength rotating shaft 16, and a clearance groove 19 is provided on the upper side of the end rod of the positioning rod 2 for the pedal member 1 to move when it rotates, and a high-strength support plate 20 is provided on the lower side of the end rod of the positioning rod 2 for use with the pedal member 1. When the pedal member 1 rotates to the lowermost side, it plays a lifting and limiting role on the pedal member 1, so that the pedal member 1 can be prevented from moving horizontally, which is convenient for workers to use.

[0044] In the above description, in the natural state, the pedal member 1 automatically rotates upward to an angle parallel to the wall of the inspection shaft. At this time, the pedal member 1 is stuck in the clearance groove 19, which can reduce its occupation of the external space; when in use, the staff rotates the pedal member 1 downward to a horizontal position by stepping on it or manually pulling it down. At this time, the pedal member 1 is stuck on the support plate 20, which is convenient for the staff to move in the inspection shaft.

[0045] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, the retraction limit mechanism is arranged in the positioning rod 2, including a threaded adjustment member 13 and a slider 15. The threaded adjustment member 13 is arranged in the positioning rod 2 and is threadedly connected to the positioning rod 2; the slider 15 is slidably installed in the positioning rod 2 and is connected to the threaded adjustment member 13 through a spring 14. The other end of the slider 15 is connected to the pedal member 1 through a twisted wire 18.

[0046] In the above description, the threaded adjustment member 13 is threadedly connected to the positioning rod 2 on the side close to the outer wall of the inspection well shaft, and is used to adjust the position of the threaded adjustment member 13 in the positioning rod 2 according to needs during use, and then adjust the adaptive tension of the spring 14; the slider 15 is slidably installed in the positioning rod 2, and fits tightly with the side wall of the positioning rod 2, and slides in the positioning rod 2 along the length direction of the positioning rod 2; the stranded wire 18 is eccentrically connected to the pedal member 1 and is connected to the upper side of the pedal member 1; when in use, the slider 15 is pulled to slide in the positioning rod 2 by the action of the spring 14 to restore the deformation, and the pedal member 1 is driven to rotate upward through the eccentric connection between the stranded wire 18 and the pedal member 1; in the process of rotating the pedal member 1 downward, the spring 14 is tensioned by the traction action to facilitate the use of the pedal member 1, and the pedal member 1 is reset after use.

[0047] like Figure 1 、 Figure 2 and Figure 3 As shown, a dust cap 4 is threadedly connected to the outer end of the positioning rod 2 , and the dust cap 4 can prevent external dust from entering the positioning rod 2 .

[0048] like Figure 1 and Figure 5 As shown, the pedal member 1 is also provided with a structural net 21 and a hand grip 22. The structural net 21 is installed in the middle of the structure of the pedal member 1, so as to increase the pedal area when in use and facilitate workers to use; the hand grip 22 is provided at the free end of the pedal member 1, so as to facilitate grasping when in use; at the same time, in order to facilitate workers to open the pedal member 1 by pedaling when going down the well, so that the pedal member 1 can be rotated downward, an extension plate 10 is further provided on the outside of the free end of the pedal member 1, and a foot pedal 11 is provided at the end of the extension plate 10. When in use, the foot pedal 11 is moved by the toes to make the pedal member 1 rotate downward, and the pedal member 1 is rotated down to a horizontal position for easy stepping.

[0049] like Figure 1 、 Figure 2 and Figure 3 As shown, a rubber outer sleeve 12 is provided on the outer side wall of the positioning rod 2 passing through the inspection shaft. The outer sleeve 12 can prevent external moisture from entering the positioning rod 2 and protect the positioning rod 2.

[0050] like Figure 1 、 Figure 2 and Figure 3 As shown, an extrusion nut 5 and a first tightening nut 6 are threadedly connected to the positioning rod 2 on one side of the outer wall of the inspection well shaft, and the extrusion nut 5 and the first tightening nut 6 are respectively located on both sides of the inner pad 3. When in use, the position of the inner pad 3 on the positioning rod 2 is positioned by tightening the extrusion nut 5 and the first tightening nut 6, and a rubber waterproof pad 9 is also provided on the side of the first tightening nut 6 close to the side wall of the inspection well shaft, which is used to prevent water molecules at the side wall of the inspection well shaft from entering the threaded connection of the first tightening nut 6 and causing rust at the connection.

[0051] like Figure 1 、 Figure 2 and Figure 3 As shown, a second tightening nut 8 is also threadedly connected to the positioning rod 2. The second tightening nut 8 is used in conjunction with the outer gasket 7. By tightening the second tightening nut 8, the outer gasket 7 is tightened so that it is pressed tightly against the inner wall of the inspection well shaft, and a rubber waterproof pad 9 is provided on the side of the outer gasket 7 close to the inner wall of the inspection well shaft to prevent water molecules at the side wall of the inspection well shaft from entering the threaded connection of the second tightening nut 8 and causing rust at the connection.

[0052] The use process of the inspection well shaft ladder of the utility model includes:

[0053] During installation, the positioning rod 2 is installed on the side wall of the inspection well shaft by using the extrusion nut 5, the first tightening nut 6 and the inner pad 3, and the second tightening nut 8 and the outer pad 7 together, and then the pedal member 1 is installed to realize the installation of the inspection well shaft ladder in the inspection well shaft;

[0054] When in use, in the natural state, the pedal member 1 automatically rotates upward to an angle parallel to the wall of the inspection shaft. When in use, the staff rotates the pedal member 1 downward to a horizontal position by stepping on it or pulling it down manually for easy stepping.

[0055] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A manhole ladder, arranged on the inner side of the wall of the manhole ladder, characterized by: include: The pedal member (1) is arranged on the inner wall of the inspection well shaft through the positioning rod (2) and is rotationally connected to the positioning rod (2) through a retraction limit mechanism; A positioning rod (2) passes through the side wall of the inspection well and is connected to the inner pad (3) and the outer pad (7) respectively; An inner pad (3) is arranged on the outer side wall of the inspection well shaft; The outer pad (7) is arranged on the inner side wall of the inspection well shaft.

2. The inspection shaft ladder according to claim 1, characterized in that: The retraction limiting mechanism is arranged in the positioning rod (2) and comprises: A threaded adjustment member (13) is disposed in the positioning rod (2) and is threadedly connected to the positioning rod (5); The slider (15) is slidably arranged in the positioning rod (2) and is connected to the threaded adjustment member (13) through a spring (14). The other end of the slider (13) is connected to the pedal member (1) through a twisted wire (18).

3. The inspection shaft ladder according to claim 2, characterized in that: The strand (18) is eccentrically connected to the pedal member (1) and is connected to the upper side of the pedal member (1).

4. The inspection shaft ladder according to claim 1, characterized in that: The outer end of the positioning rod (2) is also threadedly connected with a dust cap (4).

5. The inspection shaft ladder according to claim 1, characterized in that: The pedal member (1) is a U-shaped pedal, connected to the end of the positioning rod (2) via a rotating shaft (16), and a clearance groove (19) is provided on the upper side of the end rod of the positioning rod (2) to match the pedal member (1); and a supporting plate (20) is provided on the lower side of the end rod of the positioning rod (2) to match the pedal member (1).

6. The inspection shaft ladder according to claim 1, characterized in that: The pedal member (1) is further provided with a structural net (21) and a hand grip (22); the structural net (21) is provided in the middle of the structure of the pedal member (1); and the hand grip (22) is provided at the free end of the pedal member (1).

7. The inspection shaft ladder according to claim 1, characterized in that: An extension plate (10) is further provided on the outside of the free end of the pedal member (1), and a footrest plate (11) is provided at the end of the extension plate (10).

8. The inspection shaft ladder according to claim 1, characterized in that: The positioning rod (2) is also threadedly connected with an extrusion nut (5) and a first tightening nut (6), and the extrusion nut (5) and the first tightening nut (6) are respectively located on both sides of the inner pad (3), and a rubber waterproof pad (9) is also provided on the side of the first tightening nut (6) close to the side wall of the inspection well shaft.

9. The inspection shaft ladder according to claim 1, characterized in that: The positioning rod (2) is also threadedly connected to a second tightening nut (8), which matches the outer pad (7), and a rubber waterproof pad (9) is provided on the side of the outer pad (7) close to the inner wall of the inspection well shaft.

10. The inspection shaft ladder according to claim 1, characterized in that: The positioning rod (2) is also sleeved with an outer sleeve (12).

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