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CN-224213370-U - Prefabricated inspection shaft

CN224213370UCN 224213370 UCN224213370 UCN 224213370UCN-224213370-U

Abstract

The application relates to a prefabricated inspection shaft, which relates to the technical field of inspection shafts and comprises a shaft seat, a middle shaft and an upper shaft which are sequentially arranged from bottom to top, wherein the shaft seat is a cylinder with an upper opening, the middle shaft and the upper shaft are cylinders which penetrate up and down, convex rings are arranged on the lower end faces of the middle shaft and the upper shaft, annular grooves matched with the convex rings are arranged on the upper end faces of the shaft seat and the middle shaft, a plurality of clamping blocks are arranged on the inner wall of the convex rings, and a plurality of vertical grooves and transverse grooves for the movement of the clamping blocks are arranged on the side walls of the annular grooves. The application has the effect of improving the working efficiency of checking the assembly of the shaft.

Inventors

  • ZHAO YUJUN
  • Luan Yuli
  • SUN ZESHU
  • LIU QINGSHAN
  • JI XIANG
  • BAO JUN

Assignees

  • 青岛宝田建筑工程有限公司

Dates

Publication Date
20260508
Application Date
20250508

Claims (8)

  1. 1. The utility model provides a prefabricated inspection pit shaft, includes well seat (1), middle pit shaft (2) and last pit shaft (3) that arrange in proper order from the bottom up, wherein well seat (1) is top open-ended drum, middle pit shaft (2) and last pit shaft (3) are the drum that runs through from top to bottom, the lower terminal surface of middle pit shaft (2) and last pit shaft (3) both all is equipped with bulge loop (4), annular (5) with bulge loop (4) looks adaptation are all offered to the up end of well seat (1) and middle pit shaft (2), bulge loop (4) inner wall is equipped with a plurality of fixture block (41), a plurality of vertical groove (51) and transverse groove (52) that are used for fixture block (41) to remove are offered to annular (5) lateral wall.
  2. 2. The prefabricated inspection shaft as set forth in claim 1, wherein a plurality of fixing rods (11) are inserted into the side wall of the well base (1) along the vertical direction, and one end of each fixing rod (11) far away from the well base (1) sequentially penetrates through the middle shaft (2) and the upper shaft (3).
  3. 3. The prefabricated inspection shaft as set forth in claim 1, wherein the outer side walls of the well base (1), the middle shaft (2) and the upper shaft (3) are uniformly provided with a plurality of struts (12) along the circumferential direction.
  4. 4. A prefabricated inspection shaft as in claim 3, wherein the end of the strut (12) remote from the well base (1) is fixedly provided with a vertically downwardly extending stop lever (121).
  5. 5. A prefabricated inspection shaft as claimed in claim 1, characterized in that the upper shaft (3) has an inner diameter smaller than the inner diameter of the intermediate shaft (2).
  6. 6. The prefabricated inspection shaft as set forth in claim 2, wherein a guide ring (31) is disposed on the upper end face of the upper shaft (3), a well ring (6) is sleeved between the outer side wall of the guide ring (31) and the fixed rod (11), the inner wall of the well ring (6) is abutted against the outer side wall of the guide ring (31), the lower end face of the well ring (6) is abutted against the upper end face of the upper shaft (3), and the upper end face of the guide ring (31) is below the upper end face of the well ring (6).
  7. 7. A prefabricated inspection shaft according to claim 1, characterized in that the intermediate shaft (2) is provided in several.
  8. 8. A prefabricated inspection shaft as claimed in claim 1, wherein the side wall of the well base (1) is provided with a plurality of through holes (13) for communicating the inside and the outside of the well base (1).

Description

Prefabricated inspection shaft Technical Field The application relates to the technical field of inspection shafts, in particular to a prefabricated inspection shaft. Background The inspection well is arranged for the convenience of maintenance and installation of power supply, water drainage, pollution discharge, communication, cable television, gas pipes, street lamp lines and the like of urban underground infrastructures, is generally arranged at the junction of pipelines, the turning position, the pipe diameter or gradient change position and the position on a straight pipe section at certain intervals, and is convenient for periodically inspecting auxiliary structures. The traditional inspection well adopts on-site die-filling pouring or bricking, so that the construction period is increased, the construction quality is difficult to ensure, the assembly degree is low, the construction pollution is increased, and the requirements of developing green buildings in China are not met. The existing wellbores are prefabricated members, and the prefabricated wellbores are installed in a well bore. However, each section of shaft has relatively large self weight, and when the prefabricated shafts are installed, the shafts of each section are not easy to be coaxially aligned and connected together, so that the shafts are slowly assembled, and the working efficiency of shaft assembly is reduced. Disclosure of utility model In order to improve the working efficiency of the assembly of the inspection shaft, the application provides a prefabricated inspection shaft. The application provides a prefabricated inspection shaft, which adopts the following technical scheme: The utility model provides a prefabricated inspection pit shaft, includes well seat, middle pit shaft and the last pit shaft of arranging in proper order from the bottom up, well seat is top open-ended drum, and middle pit shaft and last pit shaft are the drum that runs through from top to bottom, and the lower terminal surface of middle pit shaft and last pit shaft both all is equipped with the bulge loop, and the annular groove with bulge loop looks adaptation has all been seted up to the up end of well seat and middle pit shaft both, and the bulge loop inner wall is equipped with a plurality of fixture block, and a plurality of vertical groove and the transverse groove that is used for the fixture block to remove have been seted up to the annular side wall. Through adopting above-mentioned technical scheme, go up between pit shaft and the centre pit shaft, centre pit shaft and the well seat and all realize zonulae occludens through the cooperation of bulge loop and annular, effectively avoided the dislocation phenomenon of horizontal direction, the bulge loop drives the lug and gets into the cross slot along vertical slot simultaneously, then rotates the bulge loop, makes the lug follow the cross slot motion, can restrict the bulge loop and break away from the annular along vertical direction, has improved the stability and the installation effectiveness of pit shaft. Optionally, a plurality of dead levers are inserted in the side wall of the well seat along the vertical direction, and one end of the dead lever, which is far away from the well seat, sequentially passes through the middle shaft and the upper shaft. Through adopting above-mentioned technical scheme, well seat, middle pit shaft and last pit shaft stack together after vertical direction rotates in proper order, and the dead lever is used again to cluster together three with the three for well seat, middle pit shaft and last pit shaft are connected more firmly, have further strengthened holistic stability. Optionally, the outer side walls of the well seat, the middle shaft and the upper shaft are uniformly provided with a plurality of struts along the circumferential direction. By adopting the technical scheme, the supporting rod increases the contact area between the shaft and the soil body, effectively improves the stability of the shaft and prevents the shaft from tilting or moving. Optionally, a stop lever extending vertically downwards is fixedly arranged at one end of the support rod far away from the well seat. Through adopting above-mentioned technical scheme, can hang the lifting hook and hoist and mount each part of pit shaft on branch, articles such as lifting hook in the pin can prevent hoist and mount and the work progress drop from branch, has strengthened convenience and the security of construction. Optionally, the upper wellbore inner diameter is smaller than the inner diameter of the middle wellbore. Through adopting above-mentioned technical scheme, the shrink design of going up the pit shaft can reduce the risk that the rainwater backward flow, protects the pit shaft inside not influenced by outside water pressure. Optionally, the up end of going up the pit shaft is equipped with the guide ring, and the cover is equipped with the well ring between guide ring lateral wa