CN2771301Y

CN2771301Y - Anti-theft manhole cover and covering-screwing tool

Info

Publication number: CN2771301Y
Application number: CN 200520050125
Authority: CN
Inventors: 曹勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-01-21
Filing date: 2005-01-21
Publication date: 2006-04-12
Anticipated expiration: 2015-01-21

Abstract

The utility model discloses an anti-theft well cover and a cover rotating tool thereof. The anti-theft well cover is provided with a cover plate and a base. The cover plate is composed of a surface cover and at least two foot-shaped teeth below the surface cover. An inclined hole which is arranged for rotating the cover plate is arranged on the surface cover. The base is mainly composed of an outer ring and inner tooth rings. The foot-shaped teeth are matched with the inner tooth rings. The cover rotating tool is mainly composed of a rack upright column, a gear, an inclined groove ring, a hooking rod and a bottom plate. The inclined groove ring can be sheathed on the rack upright column in an up and down move mode. The gear is installed on the inclined groove ring by a shaft handle, and the gear is engaged with the rack upright column to drive the inclined groove ring to move from top to bottom. An inclined groove for adjusting an inclined angle of the hooking rod is arranged on the inclined groove ring. The upper part of the hooking rod is fallen in the inclined groove, the lower part of the hooking rod passes through the bottom plate, and is hinged with the bottom plate, and the middle part of the hooking rod is pulled on the rack upright column by a spring. Due to the fact that a special cover rotating tool is needed by the cover plate to open the cover plate of the utility model, therefore the utility model can have an effective anti-theft function.

Description

Anti-stealing manhole cover and spiral cover instrument thereof

Technical field

The utility model relates to a kind of anti-stealing manhole cover and spiral cover instrument thereof that is used for sewer.

Background technology

The only material of sewer well lid is an iron, especially nodular cast iron, because iron has higher recovery price, some lawless persons are for being greedy for small gains, make well lid stolen again and again, fall into sewer accidentally when causing pedestrian or vehicle to pass by and personnel casualty accidents and traffic accident take place.In order to address this problem, someone attempts to substitute nodular cast iron with steel concrete, but the cover plate of steel concrete has approached insufficient strength, it is long that thick well lid is opened the time that difficulty needs, especially the place that has automobile to pass through, require well lid that enough intensity must be arranged, and take off and cover the working time and will lack, so general well lid cylinder iron all.

The utility model content

The purpose of this utility model is to provide a kind of anti-stealing manhole cover and spiral cover instrument thereof that can prevent effectively that well lid is stolen.

The utility model anti-stealing manhole cover has cover plate and base, cover plate is made up of at least two pin shape teeth under cover and the cover, promising rotation cover on the cover and the inclined hole established, base mainly is made up of outer shroud and ring gear, described pin shape tooth matches with ring gear, and its height and width make its mark of mouth place that can pass ring gear be threaded onto the protruding below of tooth of ring gear.

The utility model is used for the spiral cover instrument of above-mentioned well lid, mainly is made up of tooth bar column, gear, skewed slot circle, shank, base plate; Described skewed slot circle can be enclosed within on the tooth bar column up or down, and gear is installed on the skewed slot circle by footstalk, is meshed with the tooth bar column can drive the skewed slot circle and move up and down; The skewed slot circle is provided with the skewed slot that is used to regulate the shank inclination angle, and shank top is dropped in the described skewed slot, the bottom pass base plate and and base plate hinged, the middle part is pulled on the tooth bar column by spring.

Installation process of the present utility model is: the base with well lid is fixed on the sewer mouth earlier, facing to the mark of mouth place of base cover plate being put down in the pin shape tooth of cover plate again is located on the ring gear of base, then the shank of cover plate throw is inserted the inclined hole of cover plate, the adjustment at shank inclination angle is by the transmitting gear footstalk, the skewed slot circle is moved up and down to carry out, insert the skewed slot of cover plate when shank after, rotate the handle at tooth bar column top, make shank drive the cover plate rotation, until pin shape tooth to the tooth that is positioned at the base ring gear protruding below, cover plate is screwed, and installs promptly to finish.In the time will opening well lid, program is opposite with above-mentioned situation.

Because cover plate of the present utility model needs special-purpose spiral cover instrument cover plate could be opened, so can play effective antitheft effect.

Description of drawings

Fig. 1 is the main sectional view of the utility model well lid.

Fig. 2 is that the C of Fig. 1 is to view.

Fig. 3 is the main sectional view of the utility model spiral cover instrument.

Fig. 4 is the sectional view of Fig. 3 along the A-A line.

The specific embodiment

Fig. 1 and Fig. 2 have reflected well lid structure of the present utility model, and this well lid is made up of base 1 and cover plate 2, and base 1 is made up of the ring gear in outer shroud 11 and the outer shroud 12, has groove 13 on the ring gear 12, are equipped with the rubber strip 14 of quiet usefulness in this groove.Cover plate is made up of cover 21 and the pin shape tooth 22 below it, cover 21 is provided with the inclined hole 23 into rotation cover usefulness, pin shape tooth 22 matches with ring gear 12, the mark of mouth that the width of pin shape tooth 22 and highly making it passes ring gear is threaded onto the protruding below of tooth of ring gear 12, and the panel bed of cover plate is dropped on the ring gear 12 of base 1.

Fig. 3 and Fig. 4 have reflected the structure of the utility model spiral cover instrument.This instrument is made up of tooth bar column 3, gear 4, skewed slot circle 5, shank 6, base plate 7 as can be seen from Figure 3.Skewed slot circle 5 is enclosed within on the tooth bar column 3 and can moves up and down, and gear 4 is installed in the top of skewed slot circle 5 by footstalk 41, can drive skewed slot circle 5 with tooth engagement in the tooth bar vertical rod 3 and move up and down; The inclination angle of shank 6 is regulated in the bottom of skewed slot circle 5 when being provided with skewed slot 51 and being used for it and moving up and down, shank 6 tops are dropped in the skewed slot 51, the middle part is pulled on the tooth bar column by a spring 61, have four mounting grooves 71 and hinged seat 72 on the base plate 7, the bottom of shank 6 is hinged on the hinged seat 72 of base plate 7 after inserting mounting groove 71.When rotating footstalk 41, gear 4 moves up and down along tooth bar column 3, the skewed slot circle is along with moving up and down, the inclination angle of shank 6 changes thereupon and obtains adjusting, the explanation adjusted puts in place when the inclined hole 23 of well lid cover plate 2 can be inserted in the bottom of shank 6, and this moment, an available lock bolt 8 was locked at skewed slot circle 5 on the tooth bar column 3; Tooth bar column 3 lower ends and base plate 7 welding, the upper end is connected with a lever 31.When rotating operation handle 31, shank 6 rotates, and drives cover plate 2 rotations of well lid thus.

During use, if open cover plate 2, earlier with the inclined hole 23 on the shank 6 aligning well lid cover plates 2 of spiral cover instrument, the footstalk 41 that rotates the spiral cover instrument then makes gear 4 rotate with respect to tooth bar column 3, skewed slot circle 5 moves up and down and shank 6 is slided in skewed slot 51 inclination angle is changed, so that shank 6 inserts in the inclined hole 23 of cover plate 2, after shank inserts the cover plate inclined hole, the lever 31 that just can rotate tooth bar column top rotates shank, drive the cover plate rotation thus, make the pin shape tooth of cover plate forward the mark of mouth place to by the protruding below of the tooth of base ring gear 12, cover plate 2 just can take out.The operating process that the cover plate lid is tightened on the base is then opposite.

Claims

1, a kind of well lid, have cover plate (2) and base (1), it is characterized in that cover plate (2) is made up of at least two pin shape teeth (22) under cover (21) and the cover, promising rotation cover on the cover and the inclined hole (23) established, base (1) mainly is made up of outer shroud (11) and ring gear (12), described pin shape tooth (22) matches with ring gear (12), and its height and width make its mark of mouth place that can pass ring gear (12) be threaded onto the protruding below of tooth of ring gear (12).

2, a kind of spiral cover instrument that is used for the described well lid of claim 1 is characterized in that it mainly is made up of tooth bar column (3), gear (4), skewed slot circle (5), shank (6), base plate (7); Described skewed slot circle (5) can be enclosed within on the tooth bar column (3) up or down, and gear (4) is installed on the skewed slot circle (5) by footstalk (41), is meshed with tooth bar column (3) can drive skewed slot circle (5) and move up and down; Skewed slot circle (5) is provided with the skewed slot (51) that is used to regulate shank (6) inclination angle, and shank (6) top is dropped in the described skewed slot (51), the bottom pass base plate (7) and and base plate hinged, the middle part is pulled on the tooth bar column (3) by spring (61).