CN213869803U

CN213869803U - Shaft anti-falling net mounting structure

Info

Publication number: CN213869803U
Application number: CN202022967701.6U
Authority: CN
Inventors: 朱劲松; 苏萍; 陈江; 苏秀银; 周旺; 杨莹
Original assignee: Guilin Municipal Comprehensive Design Institute
Current assignee: Guilin Municipal Comprehensive Design Institute
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2021-08-03
Anticipated expiration: 2030-12-10

Abstract

The utility model discloses a pit shaft prevents weighing down net mounting structure, including the pit shaft with prevent weighing down the net, the well lid is installed to the pit shaft upper end, the inside upper end fixed position of pit shaft has the lift cat ladder, the pit shaft lateral wall has a strip type device box at spout mouth fixed position, and the lead screw motor is installed to strip type device box bottom, and the lead screw shaft upper end of lead screw motor is through the strip type device box internal top of bearing installation, and the cooperation is connected with the screw thread axle sleeve on the lead screw shaft, and the fixed welding of a screw thread axle sleeve lateral wall has the protrusion piece, has seted up the socket groove on the protrusion piece, prevent weighing down the equal fixed mounting in net both ends and have the poth. The utility model discloses simple structure, convenient operation, lead screw motor rotate can make threaded shaft cover remove along its lead screw axle length direction to can go up and down to preventing weighing down the net, make things convenient for the staff to carry out the safety inspection work at the inside not co-altitude of pit shaft, factor of safety is higher.

Description

Shaft anti-falling net mounting structure

Technical Field

The utility model relates to a fire shaft field, more specifically say, in particular to pit shaft prevents weighing down net mounting structure.

Background

The inspection well is used for maintaining power supply, water drainage, pollution discharge, communication, cable television, gas pipes, street lamp lines and the like of urban underground infrastructure, and is convenient to install. The well-shaped structure is generally arranged at the intersection of pipelines, the turning part, the pipe diameter or gradient change part and the linear pipeline section at certain intervals, and is a well-shaped structure which is integrally injection-molded or bricked by plastics and is convenient for periodically checking the cleanness and dredging of auxiliary structures or checking the operation of going into the well.

The prior water supply and drainage fire-fighting inspection shaft technology has the following problems: when plumbing fire control inspection shaft is darker, when the staff passed through the cat ladder and gets into in the pit shaft, the condition that falls takes place easily, and factor of safety is not high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pit shaft prevents weighing down net mounting structure to overcome the defect that prior art exists.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a pit shaft prevents weighing down net mounting structure, includes the pit shaft and prevents weighing down the net, the well lid is installed to the pit shaft upper end, the inside upper end fixed mounting of pit shaft has the lift cat ladder, the spout opening has all been seted up at lift cat ladder below position to pit shaft both sides wall, the pit shaft lateral wall has a strip type device box at spout opening fixed mounting, the opening of intercommunication spout opening is seted up to strip type device box one side, the lead screw motor is installed to strip type device box bottom, the top in the strip type device box of bearing installation is passed through to lead screw shaft upper end of lead screw motor, the cooperation is connected with the threaded shaft cover on the lead screw shaft, a threaded shaft cover lateral wall fixed welding has the bulge piece, has seted up the socket groove on the bulge piece, prevent weighing down the equal fixed mounting in net both ends and have the pothook, the socket groove joint of pothook and corresponding position.

Further, a switch is fixedly mounted at the upper end of the inner side wall of the shaft and used for controlling starting and stopping of the two lead screw motors.

Furthermore, a partition board is fixedly installed at the lower portion in the strip-shaped device box, the lead screw motor is fixedly installed on the lower surface of the partition board, a bearing shaft disc is fixedly installed on the upper surface of the partition board, and a limiting ferrule is fixedly installed on the surface of a lead screw shaft of the lead screw motor and attached to the bearing shaft disc.

Further, the shape of the hook is U-shaped.

Furthermore, a plurality of grooves are symmetrically formed in the upper surface of the bearing shaft disc in the axis direction, cylindrical rolling shafts are movably mounted in the grooves, and the cylindrical rolling shafts are attached to the lower surface of the limiting ring.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses simple structure, convenient operation, in the staff gets into the pit shaft through the lift cat ladder, at first will prevent weighing down the net and be connected through pothook and protrusion piece, can control the lead screw motor through the switch, the lead screw motor rotates and to make the threaded shaft cover remove along its lead screw axle length direction to can go up and down to preventing weighing down the net, make things convenient for the staff to carry out the safety inspection work at the inside not co-altitude of pit shaft, factor of safety is higher.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a block diagram of a shaft fall protection net mounting structure of the present invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

fig. 3 is an enlarged schematic view of the structure at B in fig. 2.

In the figure: 1 pit shaft, 2 well covers, 3 lifting ladder stands, 4 chute openings, 5 strip-shaped device boxes, 6 openings, 7 anti-falling nets, 8 threaded shaft sleeves, 9 lead screw motors, 10 protruding blocks, 11 socket grooves, 12 hooks, 13 partition plates, 14 limiting ferrules, 15 bearing shaft discs, 16 cylindrical rolling shafts and 17 switches.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention can be more clearly and clearly defined.

With reference to figure 1 of the drawings, fig. 2 and fig. 3 show, the utility model provides a pit shaft prevents weighing down net mounting structure, including pit shaft 1 and prevent weighing down net 7, well lid 2 is installed to 1 upper end of pit shaft, 1 inside upper end fixed position of pit shaft installs lift cat ladder 3, 1 both sides wall of pit shaft has all seted up spout mouth 4 in lift cat ladder 3 below positions, 1 lateral wall of pit shaft has strip type device box 5 at spout mouth 4 fixed position, opening 6 of intercommunication spout mouth 4 is seted up to strip type device box 5 one side, lead screw motor 9 is installed to strip type device box 6 bottom, top in the lead screw shaft upper end of lead screw motor 9 passes through strip type device box 5 of bearing installation, the cooperation is connected with threaded shaft cover 8 on the lead screw shaft, 8 a lateral wall fixed weld of threaded shaft cover has bulge 10, jack groove 11 has been seted up on bulge 10, prevent weighing down the equal fixed mounting in net 7 both ends and have pothook 12, pothook 12 and the jack groove 11 joint that corresponds the position.

In this embodiment, a switch 17 is fixedly installed at the upper end of the inner side wall of the shaft 1, and the switch 17 is used for controlling the start and stop of the two screw rod motors 9.

In this embodiment, a partition plate 13 is fixedly installed at the lower portion in the strip-shaped device box 5, the lead screw motor 9 is fixedly installed at the lower surface of the partition plate 13, a bearing reel 15 is fixedly installed at the upper surface of the partition plate 13, a limiting ferrule 14 is fixedly installed on the surface of a lead screw shaft of the lead screw motor 9, the limiting ferrule 14 is attached to the bearing reel 15, the bearing reel 15 can play a role of bearing the lead screw shaft, and when a person drops on the anti-falling net 7, the bearing reel 15 can reduce the load on the lead screw motor 9.

In this embodiment, the hook 12 is U-shaped, and the engagement is stable.

In this embodiment, a plurality of grooves are symmetrically formed in the upper surface of the bearing reel 15 in the axial direction, a cylindrical roller 16 is movably mounted in each groove, the cylindrical roller 16 is attached to the lower surface of the limiting ring 14, friction can be reduced, and the limiting ring 14 can be enabled to rotate on the bearing reel 15 with smaller friction force.

The utility model discloses a theory of operation: when a worker enters the shaft 1 through the lifting ladder stand 3, the anti-falling net 7 is connected with the protruding block 10 through the clamping hook 12, the lead screw motor 9 can be controlled through the switch 17, the lead screw motor 9 rotates to enable the threaded shaft sleeve 8 to move along the length direction of the lead screw shaft, and therefore the anti-falling net 7 can be lifted, and the worker can conveniently conduct safety maintenance work on different heights inside the shaft 1.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, various changes and modifications can be made by the owner within the scope of the appended claims, and the protection scope of the present invention should not be exceeded by the claims.

Claims

1. The utility model provides a pit shaft prevents weighing down net mounting structure, includes the pit shaft and prevents weighing down the net, its characterized in that: the anti-falling net is characterized in that a well cover is installed at the upper end of the shaft, a lifting ladder stand is fixedly installed at the upper end of the inside of the shaft, a chute opening is formed in the position below the lifting ladder stand on the two side walls of the shaft, a strip-shaped device box is fixedly installed on the outer side wall of the shaft at the chute opening, an opening communicated with the chute opening is formed in one side of the strip-shaped device box, a lead screw motor is installed at the bottom of the strip-shaped device box, the upper end of a lead screw shaft of the lead screw motor is installed at the top in the strip-shaped device box through a bearing, a threaded shaft sleeve is connected to the lead screw shaft in a matched mode, a protruding block is fixedly welded to one side wall of the threaded shaft sleeve, a socket groove is formed in the protruding block, clamping hooks are fixedly installed at two ends of the anti-falling net, and are clamped with socket grooves corresponding to the socket grooves.

2. The wellbore fall arrest net mounting structure according to claim 1, wherein: and a switch is fixedly arranged at the upper end of the inner side wall of the shaft and used for controlling the start and stop of the two lead screw motors.

3. The wellbore fall arrest net mounting structure according to claim 1, wherein: the lower part in the strip-shaped device box is fixedly provided with a partition plate, the screw rod motor is fixedly arranged on the lower surface of the partition plate, the upper surface of the partition plate is fixedly provided with a bearing shaft disc, the surface of a screw rod shaft of the screw rod motor is fixedly provided with a limiting ferrule, and the limiting ferrule is attached to the bearing shaft disc.

4. The wellbore fall arrest net mounting structure according to claim 1, wherein: the shape of the hook is U-shaped.

5. The wellbore fall arrest net mounting structure according to claim 3, wherein: a plurality of grooves are symmetrically formed in the upper surface of the bearing shaft disc in the axis direction, cylindrical rolling shafts are movably mounted in the grooves and are attached to the lower surface of the limiting ring.