Rear ladder stand for inspection well

Abstract

The utility model discloses a rear-mounted ladder stand of an inspection well, which comprises a plurality of U-shaped rod pieces, the U-shaped rod pieces are arranged on the inner wall of a shaft of the inspection well at intervals along the vertical direction, each U-shaped rod piece comprises a U-shaped rod and straight rods fixedly connected to two ends of the U-shaped rod, and ladder stand holes for the straight rods to penetrate through are arranged on the wall of the shaft of the inspection well; the first fastening piece is used for fixing the straight rod on the outer side of a shaft of the inspection well; and the second fastener is used for fixing the U-shaped rod on the inner side of a shaft of the inspection well. Compared with a pre-embedded ladder stand, the shaft construction / production efficiency can be improved by more than 20%, and rapid construction of a drainage project is facilitated; according to the utility model, the nut, the gasket and the plug are adopted to realize bidirectional fastening on the fixed section of the U-shaped rod piece, and the stress is safe and reasonable.

Description

Technical Field

[0001] The present application relates to the technical field of municipal maintenance well protection, and in particular to a rear-mounted ladder for an inspection well. Background Art

[0002] In recent years, the national economy has grown steadily, the construction and infrastructure industries have developed vigorously, and the "Catalogue of Elimination of Construction Technology, Equipment and Materials Endangering Production Safety in Housing Construction and Municipal Infrastructure Projects (First Batch)" prohibits the use of brick-built sewage inspection wells in municipal projects. Various types of inspection wells are developing towards concrete structure and prefabrication. Whether it is a cast-in-place inspection well or a prefabricated inspection well, in order to pursue efficient construction and production, a rear-mounted ladder is often used. However, the rear-mounted ladder is fixed with anchor glue, and its safety and reliability have certain risks. It is necessary to develop a safe and reliable rear-mounted inspection well ladder. Utility Model Content

[0003] The technical problem to be solved by the utility model is: to solve the problems existing in the above-mentioned background technology and to provide a rear-mounted inspection well climbing ladder which can be constructed quickly and has a safe and reliable structure.

[0004] The utility model provides a rear-mounted ladder for an inspection well, which adopts the following technical solutions:

[0005] A rear ladder for an inspection well, comprising:

[0006] A plurality of U-shaped rods are arranged at intervals along the vertical direction on the inner wall of the inspection shaft, wherein the U-shaped rods include a U-shaped rod and straight rods fixedly connected to both ends of the U-shaped rod, and a ladder hole for the straight rod to pass through is opened on the wall of the inspection shaft;

[0007] A first fastener, used to fix the straight rod to the outside of the inspection well shaft;

[0008] The second fastener is used to fix the U-shaped rod to the inner side of the inspection well shaft.

[0009] Furthermore, the diameter of the straight rod is smaller than that of the U-shaped rod. The end of the U-shaped rod abuts against the inner wall of the inspection well shaft, so that the position of the straight rod is fixed and is not easy to loosen forward and backward.

[0010] Furthermore, the first fastener includes a first thread arranged on the straight rod and a first nut matched with the first thread. The first nut and the first thread are connected to the end of the straight rod, thereby fixing the straight rod to the outside of the inspection well shaft.

[0011] Furthermore, the second fastener includes a second thread arranged on the U-shaped rod and a second nut matched with the second thread. The second nut and the second thread are connected to the end of the U-shaped rod, thereby fixing the U-shaped rod to the inner side of the inspection well shaft.

[0012] Furthermore, the first fastener further includes a first gasket, which is arranged between the first nut and the outer wall of the inspection well shaft; the second fastener further includes a second gasket, which is arranged between the second nut and the inner wall of the inspection well shaft. The first gasket and the second gasket are used to increase the contact surface area of ​​the connected parts, reduce the pressure per unit area and protect the surface of the connected parts from being damaged.

[0013] Furthermore, plugs are provided on both sides of the ladder hole, and the straight rod passes through the plugs. The plugs can circumferentially reinforce and stabilize the straight rod so that the straight rod will not loosen in the ladder hole.

[0014] Furthermore, the plug is conical, which makes it easy to insert the plug into the ladder hole.

[0015] Furthermore, the plug is made of elastic material.

[0016] Furthermore, the outer diameter of the plug in the un-extruded state is larger than the diameter of the ladder hole. After the plug is squeezed and inserted into the ladder hole, the ladder holes on both sides are tightened.

[0017] When the plug is located in the ladder hole, it is in a squeezed state, so that the plug is not easy to loosen in the ladder hole, thereby improving the stability of the straight rod being fixed in the ladder hole.

[0018] Furthermore, a plurality of U-shaped rods are arranged in a staggered manner in the vertical direction on the well wall. The staggered arrangement of the U-shaped rods can make it easier and more convenient for workers to climb up and down the ladder.

[0019] In summary, the present invention includes at least one of the following beneficial technical effects:

[0020] 1. A tool-type post-mounted ladder for inspection wells is provided, which can improve the well construction / production efficiency by more than 20% compared with the pre-buried ladder, and is conducive to the rapid construction of drainage projects;

[0021] 2. In view of the low reliability and potential safety hazards of glue-implanted inspection well ladders, nuts, washers and plugs are used to achieve two-way fastening in the fixed section of the U-shaped rod, so that the force is safe and reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the U-shaped rod of the utility model;

[0023] Figure 2 It is a schematic diagram of the opening of the inspection well shaft of the utility model.

[0024] Figure 3 It is a partial schematic diagram of Example 1 of the utility model;

[0025] Figure 4It is a partial schematic diagram of Embodiment 2 of the present utility model;

[0026] Figure 5 It is an overall schematic diagram of Embodiment 2 of the present utility model;

[0027] Figure numerals: 1. straight rod; 2. U-shaped rod; 3. plug; 4. first nut; 5. second nut; 6. first gasket; 7. second gasket; 8. first thread; 9. second thread; 10. ladder hole; 11. inspection well shaft. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, left, right, front, back, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0032] Example 1

[0033] like Figure 1 , Figure 2 and Figure 3 As shown, a rear ladder for an inspection well includes a plurality of U-shaped rods arranged at intervals along the vertical direction on the inner wall of the inspection well shaft, and also includes a first fastener and a second fastener. The U-shaped rod includes a U-shaped rod 2 and a straight rod 1 fixed to both ends of the U-shaped rod, and a ladder hole 10 for the straight rod 1 to pass through is opened on the wall of the inspection well shaft. The first fastener is used to fix the straight rod 1 to the outside of the inspection well shaft 11, and the second fastener is used to fix the U-shaped rod 2 to the inside of the inspection well shaft 11.

[0034] like Figure 1As shown, the diameter of the straight rod 1 is smaller than the diameter of the U-shaped rod 2. The end of the U-shaped rod abuts against the inner wall of the inspection well shaft, so that the position of the straight rod is fixed and not easy to loosen forward and backward.

[0035] like Figure 3 As shown, the first fastener includes a first thread 8 provided on the straight rod 1 and a first nut 4 matched with the first thread 8. The first nut and the first thread are connected to the end of the straight rod, thereby fixing the straight rod to the outside of the inspection well shaft.

[0036] like Figure 3 As shown, the second fastener includes a second thread 9 provided on the U-shaped rod 2 and a second nut 5 matched with the second thread 9. The second nut and the second thread are connected to the end of the U-shaped rod, thereby fixing the U-shaped rod to the inner side of the inspection well shaft.

[0037] like Figure 3 As shown, the first fastener also includes a first gasket 6, which is arranged between the first nut 4 and the outer wall of the inspection well shaft; the second fastener also includes a second gasket 7, which is arranged between the second nut 5 and the inner wall of the inspection well shaft. The first gasket and the second gasket are used to increase the contact surface area of ​​the connected parts, reduce the pressure per unit area and protect the surface of the connected parts from being damaged.

[0038] like Figure 2 As shown, a plurality of U-shaped rods are arranged in a staggered manner in the vertical direction on the well wall. The staggered arrangement of the U-shaped rods can make it easier and more convenient for workers to climb up and down the ladder.

[0039] When installing the ladder, first open the ladder hole 10 on the inspection well shaft, then install the second gasket 7 and the second nut 5 on the U-shaped rod 2 in sequence, install the U-shaped rod on the ladder hole 10 of the inspection well shaft 11, tighten the second nut 5, and finally install the first gasket 6 and the first nut 4 on the straight rod outside the inspection well shaft in sequence, and tighten the first nut 4.

[0040] Example 2

[0041] The difference from Example 1 is that Figure 4 , 5 As shown, plugs 3 are arranged on both sides of the ladder hole 10, and the straight rod 1 passes through the plugs 3. The plugs can circumferentially reinforce and stabilize the straight rod so that the straight rod will not loosen in the ladder hole.

[0042] The plug is conical, and the conical plug is easy to insert into the ladder hole; the elastic material can be a rubber plug. The outer diameter of the plug in the un-extruded state is larger than the diameter of the ladder hole. After the plug is squeezed into the ladder hole, the ladder holes on both sides are tightened. When the plug is in the ladder hole, it is in an extruded state, so that the plug is not easy to loosen in the ladder hole, thereby improving the stability of the straight rod fixed in the ladder hole.

[0043] When installing the ladder, first open the ladder hole 10 on the inspection well shaft, then install the second gasket 7 and the second nut 5 on the U-shaped rod 2 in sequence, install the plug 3 on the straight rod 1, install the U-shaped rod on the ladder hole 10 of the inspection well shaft 11, insert the plug 3 into the ladder hole on the inner side of the inspection well shaft and squeeze and tighten it, tighten the second nut 5, and finally install the plug 3, the first gasket 6, and the first nut 4 on the straight rod 1 on the outer side of the inspection well shaft in sequence, insert the plug 3 into the ladder hole 10 and squeeze and tighten it, and tighten the first nut 4.

[0044] Compared with the pre-embedded ladder, the post-mounted ladder for the manhole provided by this application is simple to install and helps to improve the efficiency of the shaft construction. In view of the low reliability and potential safety hazards of the glue-embedded manhole ladder, this application uses nuts, washers and plugs to achieve bidirectional fastening in the fixed section of the U-shaped rod, and the force is safe and reasonable.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A rear ladder for an inspection well, characterized in that: include: A plurality of U-shaped rods are arranged at intervals along the vertical direction on the inner wall of the inspection shaft, wherein the U-shaped rods include a U-shaped rod and straight rods fixedly connected to both ends of the U-shaped rod, and a ladder hole for the straight rod to pass through is opened on the wall of the inspection shaft; A first fastener, used to fix the straight rod to the outside of the inspection well shaft; The second fastener is used to fix the U-shaped rod to the inner side of the inspection well shaft.

2. The rear-mounted ladder for an inspection well according to claim 1 is characterized in that: The diameter of the straight rod is smaller than the diameter of the U-shaped rod.

3. The rear-mounted ladder for an inspection well according to claim 1 is characterized in that: The first fastener includes a first thread arranged on the straight rod and a first nut matched with the first thread.

4. The rear-mounted ladder for an inspection well according to claim 3 is characterized in that: The second fastener includes a second thread arranged on the U-shaped rod and a second nut matched with the second thread.

5. The rear-mounted ladder for an inspection well according to claim 4 is characterized in that: The first fastener also includes a first gasket, which is arranged between the first nut and the outer wall of the inspection well shaft; the second fastener also includes a second gasket, which is arranged between the second nut and the inner wall of the inspection well shaft.

6. The rear-mounted ladder for an inspection well according to claim 1, characterized in that: Plugs are arranged on both sides of the ladder hole, and the straight rod passes through the plugs.

7. The rear-mounted ladder for an inspection well according to claim 6, characterized in that: The stopper is conical.

8. The rear-mounted ladder for an inspection well according to claim 6, characterized in that: The plug is made of elastic material.

9. The rear-mounted ladder for an inspection well according to claim 8, characterized in that: The outer ring diameter of the plug in an un-extruded state is larger than the diameter of the ladder hole.

10. The rear ladder for inspection well according to claim 1, characterized in that: A plurality of U-shaped rods are arranged alternately in sequence along the vertical direction.

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