CN207452948U - The inspection shaft of adjustable manhole cover height - Google Patents
The inspection shaft of adjustable manhole cover height Download PDFInfo
- Publication number
- CN207452948U CN207452948U CN201721071644.5U CN201721071644U CN207452948U CN 207452948 U CN207452948 U CN 207452948U CN 201721071644 U CN201721071644 U CN 201721071644U CN 207452948 U CN207452948 U CN 207452948U
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- CN
- China
- Prior art keywords
- movable base
- inspection shaft
- cover board
- well lid
- walling crib
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Abstract
The utility model is related to a kind of inspection shafts of adjustable manhole cover height, belong to building and Municipal Engineering Construction technical field.The inspection shaft includes pit shaft, expand cover board, movable base, walling crib and well lid, pre-buried several rod irons in the expansion cover board, external screw thread is provided on the outer wall of the movable base, one end of the rod iron is stretched out the expansion cover board and is supported in the externally threaded groove of the movable base, movable base is supported in by external screw thread on rod iron, occur on road surface differential settlement cause inspection shaft well head be recessed or protrusion when, rotary moveable pedestal, external screw thread is compared with rod iron precession up or down, so as to raise or reduce walling crib and well lid, so that well lid is consistent with pavement-height, with simple in structure, the advantages of simple operation, and greatly reduce the maintenance cost in inspection shaft later stage.
Description
Technical field
The utility model is related to a kind of inspection shafts of adjustable manhole cover height, belong to building and Municipal Engineering Construction technology neck
Domain.
Background technology
Urban road inspection shaft is a kind of well columnar structure object being located on municipal works Main Underground trunk pipeline, with China city
The development of townization level, the various pipelines in civilian infrastructure construction are changed by embedded underground by traditional aerial laying, set
Inspection shaft quantity on road surface is more and more.
Inspection shaft is from the point of view of its construction, with usually being collectively constituted at road interface by pedestal, walling crib, well lid and surrounding road surface
Whole, well lid is concordant with surrounding road surface, to ensure the comfortable safety of the evenness of road surface of well head position and driving.
However, in actually runing, often it is present with inspection shaft well head recess or protrusion, endangers traffic safety, increase the later stage
Road upkeep cost.
Utility model content
Occur well head recess or protrusion during operation for inspection shaft, after endangering traffic safety, increasing
The problem of phase road upkeep cost, the utility model provide a kind of inspection shaft of adjustable manhole cover height, including pit shaft, expand
Cover board, movable base, walling crib and well lid, it is described to expand pre-buried several rod irons in cover board, it is set on the outer wall of the movable base
There is external screw thread, one end of the rod iron is stretched out the expansion cover board and is supported in the externally threaded groove of the movable base,
Movable base is supported in by external screw thread on rod iron, is occurred differential settlement on road surface and is caused inspection shaft well head recess or protrusion
When, rotary moveable pedestal, external screw thread is compared with rod iron precession up or down, so as to raise or reduce walling crib and well lid, so as to
Well lid is made to be consistent with pavement-height, there is simple in structure, simple operation, and greatly reduces the inspection shaft later stage
Maintenance cost.
For solution more than technical problem, the utility model includes following technical solution：
A kind of inspection shaft of adjustable manhole cover height including pit shaft, expands cover board, movable base, walling crib and well lid, described
Movable base is to be provided with external screw thread on cylindric and outer wall；The top for expanding cover board and being fixedly arranged at the pit shaft, the expansion
The circular hole for accommodating the movable base is provided on large cover, it is described to expand pre-buried several rod irons in cover board, the rod iron
Diameter be less than the externally threaded screw pitch, one end of the rod iron stretches out the expansion cover board and is simultaneously supported on the movable base
Externally threaded groove in.
Preferably, the rod iron is 6, is angularly distributed in the same level of the expansion cover board.
Preferably, the external screw thread of the movable base is rectangular thread or trapezoidal thread.
Preferably, the outer diameter of the walling crib is more than the externally threaded outer diameter of the movable base, and the internal diameter of the walling crib is equal to
The internal diameter of the movable base.
Preferably, the upper surface of the well lid and the walling crib upper surface are concordant and concordant with road surface.
Preferably, the lower edge of the well lid is rounded structure, and the junction of the movable base and the well lid is rounding
Corner structure.
Preferably, a pair of groove for accommodating swing arm is provided in the walling crib.
The utility model due to using the technology described above, is allowed to compared with prior art, have the following advantages that and accumulate
Pole effect：
(1) movable base is supported in by external screw thread on rod iron, is occurred differential settlement on road surface and is caused inspection shaft well head
When recess or protrusion, rotary moveable pedestal, external screw thread compared with rod iron precession up or down, so as to raise or reduce walling crib and
Well lid so that well lid is consistent with pavement-height, has the advantages that simple in structure, simple operation, and greatly reduces inspection
Look into the maintenance cost in well later stage；
(2) well lid lower edge is rounded structure, for disperseing the traffic loading that well lid is transferred to movable base, is avoided because of right angle
Stress concentration caused by type contact structures and shortening structure service life, correspondingly, on movable base are provided with matching
Rounding corner structure；
(3) a pair of of groove is provided in walling crib, it, can be easily by rotating swing arm when being put into swing arm in a groove
Rotary moveable pedestal.
Description of the drawings
Fig. 1 is the structure diagram of the inspection shaft for the adjustable manhole cover height that one embodiment of the utility model provides；
Fig. 2 is along A-A sectional views in Fig. 1；
Fig. 3 is the walling crib top view in one embodiment of the utility model.
Figure label is as follows：
Inspection shaft 100；Pit shaft 110；Expand cover board 120；Rod iron 121；Movable base 130；External screw thread 131；Walling crib 140；
Groove 141；Swing arm 142；Well lid 150；Road surface 200.
Specific embodiment
The inspection shaft of adjustable manhole cover height provided by the utility model is made below in conjunction with the drawings and specific embodiments into
One step is described in detail.With reference to following explanation and claims, will be become apparent from feature the advantages of the utility model.It should be noted
Be, attached drawing using very simplified form and using non-accurate ratio, only to it is convenient, lucidly aid in illustrating this reality
With the purpose of new embodiment.
Referring to Fig. 1, a kind of inspection shaft 100 of adjustable manhole cover height provided in this embodiment, including pit shaft 110, expands
Large cover 120, movable base 130, walling crib 140 and well lid 150, movable base 130 is cylindric, the outer wall of movable base 130
On be provided with external screw thread 131；Expand the top that cover board 120 is fixedly arranged at pit shaft 110, expand and be provided with receiving activity on cover board 120
The circular hole of pedestal 130, expands pre-buried several rod irons 121 in cover board 120, and the diameter of rod iron 121 is less than the spiral shell of external screw thread 131
Away from one end of rod iron 121, which is stretched out, to be expanded cover board 120 and be supported in the groove of external screw thread 131 of movable base 130.
The live forms such as brick, concrete cast-in-situ or prefabrication can be used in pit shaft 110.
Expand cover board 120 and cast in situs or prefabrication may be selected, cross section is annular shape, and internal diameter is more than movable base
130 outer diameter.Expand in cover board 120 and be embedded with rod iron 121, be preferably, as shown in Fig. 2, rod iron 121 is 6, it is angularly uniformly distributed
In the same level for expanding cover board 120.
Cylindric cast iron may be selected in movable base 130, sets external screw thread 131 on outer wall, is preferably, and external screw thread 131 is square
Shape screw thread or trapezoidal thread, the i.e. thread of external screw thread 131 are rectangle or trapezoidal, can improve the bearing capacity of external screw thread 131.Its
In, the outwardly position of external screw thread 131 is thread, is groove between two threads, and the spacing between two threads is screw pitch.
Walling crib 140 is used to support well lid 150, and walling crib 140 is fixed on movable base 130, is preferably, walling crib 140 and work
Moving base 130 is structure as a whole.Preferably, 150 lower edge of well lid is rounded structure, is provided on movable base 130 matching
Rounding corner structure, so set, the traffic loading that well lid 150 is transferred to movable base 130 can be disperseed, avoid because of perpendicular type
Stress concentration caused by contact and shortening structure service life.
Well lid 150 is held in walling crib 140, and top and 140 top of walling crib are concordant and concordant with road surface 200.
Compared with prior art, the inspection shaft 100 of the adjustable manhole cover height in the utility model has the following advantages that：It is living
Moving base 130 is supported in by external screw thread 131 on rod iron 121, and rotary moveable pedestal 130, external screw thread 131 is compared with rod iron 121
So as to raise or reduce the height of walling crib 140 and well lid 150, there is differential settlement on road surface 200 and makes in precession up or down
During into 100 well head of inspection shaft recess or protrusion, by rotary moveable pedestal 130 well lid 150 can be made highly to be kept with road surface 200
Unanimously, the maintenance cost in 100 later stage of inspection shaft is greatly reduced.
In order to facilitate rotary moveable pedestal 130, it is preferably, as shown in figure 3, a pair of of groove 141 is provided in walling crib 140,
It, can easily rotary moveable pedestal 130 by rotating swing arm 142 when being put into swing arm 142 in groove 141.Wherein, revolve
Steel rod may be employed in bar 142.
Preferably, the outer diameter of walling crib 140 is more than the outer diameter of 130 external screw thread 131 of movable base, and walling crib 140 can external spiral shell
Line 131 plays a protective role；The internal diameter of walling crib 140 is equal to the internal diameter of movable base 130, can make walling crib 140 and movable base
130 have concordant inner surface.
Foregoing description is only the description to the utility model preferred embodiment, not to any limit of the scope of the utility model
Calmly, any change, the modification that the those of ordinary skill in the utility model field does according to the disclosure above content, belonging to right will
Seek the protection domain of book.
Claims (7)
1. a kind of inspection shaft of adjustable manhole cover height, which is characterized in that including pit shaft, expand cover board, movable base, walling crib and
Well lid, the movable base are to be provided with external screw thread on cylindric and outer wall；The top for expanding cover board and being fixedly arranged at the pit shaft
Portion, described expand are provided with the circular hole for accommodating the movable base on cover board, pre-buried several rod irons in the expansion cover board,
The diameter of the rod iron is less than the externally threaded screw pitch, and one end of the rod iron is stretched out the expansion cover board and is supported on described
In the externally threaded groove of movable base.
2. the inspection shaft of adjustable manhole cover height as described in claim 1, which is characterized in that the rod iron is 6, angularly
It is distributed in the same level of the expansion cover board.
3. the inspection shaft of adjustable manhole cover height as described in claim 1, which is characterized in that the external screw thread of the movable base
For rectangular thread or trapezoidal thread.
4. the inspection shaft of adjustable manhole cover height as described in claim 1, which is characterized in that the outer diameter of the walling crib is more than institute
The externally threaded outer diameter of movable base is stated, the internal diameter of the walling crib is equal to the internal diameter of the movable base.
5. the inspection shaft of adjustable manhole cover height as described in claim 1, which is characterized in that the upper surface of the well lid and institute
It is concordant and concordant with road surface to state walling crib upper surface.
6. the inspection shaft of adjustable manhole cover height as described in claim 1, which is characterized in that the lower edge of the well lid is fillet
The junction of structure, the movable base and the well lid is rounding corner structure.
7. the inspection shaft of adjustable manhole cover height as described in claim 1, which is characterized in that be provided with a pair in the walling crib
Accommodate the groove of swing arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721071644.5U CN207452948U (en) | 2017-08-25 | 2017-08-25 | The inspection shaft of adjustable manhole cover height |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721071644.5U CN207452948U (en) | 2017-08-25 | 2017-08-25 | The inspection shaft of adjustable manhole cover height |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207452948U true CN207452948U (en) | 2018-06-05 |
Family
ID=62248332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721071644.5U Active CN207452948U (en) | 2017-08-25 | 2017-08-25 | The inspection shaft of adjustable manhole cover height |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207452948U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111535816A (en) * | 2020-06-10 | 2020-08-14 | 中南大学 | Vertical shaft structure for improving section utilization rate and design method thereof |
-
2017
- 2017-08-25 CN CN201721071644.5U patent/CN207452948U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111535816A (en) * | 2020-06-10 | 2020-08-14 | 中南大学 | Vertical shaft structure for improving section utilization rate and design method thereof |
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