CN207620010U

CN207620010U - Mechanical anti-theft manhole cover

Info

Publication number: CN207620010U
Application number: CN201721590528.4U
Authority: CN
Inventors: 芦文龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-11-24
Filing date: 2017-11-24
Publication date: 2018-07-17
Anticipated expiration: 2027-11-24

Abstract

The utility model discloses a kind of mechanical anti-theft manhole covers, including support base, lid, anti-theft fastening bolt and Anti-dismantling plug；Anti-theft fastening bolt is equipped with inside anti-theft hole, the bottom dead center position of column construction is additionally provided with the stud for extending downwardly stretching, the top of column construction, which is equipped with, has female plug installing blind, and the hole bottom of plug installing blind is additionally provided with square structure in the rotation load extended downwardly；Anti-dismantling plug is fitted on plug installing blind, the upper surface of Anti-dismantling plug is equipped with indent blind hole, indent blind hole includes the blind hole epimere and blind hole hypomere of straight hole structure, the aperture size of blind hole hypomere is more than the aperture size of blind hole epimere, and the hole wall of blind hole hypomere is equipped with the multiple positioning protrusion being uniformly arranged along circumferential direction.This mechanical anti-theft manhole cover is simple in structure, easy to operate, can effectively prevent being stolen, the antitheft capping especially suitable for underground piping catch pit port.

Description

Mechanical anti-theft manhole cover

Technical field

The utility model is related to a kind of inspection well cover, specifically a kind of mechanical anti-theft manhole cover belongs to pipeline municipal works Technical field.

Background technology

Underground piping in urban construction, including sewer, underground gas pipeline, water supply pipe, power pipe, communication Pipeline, national defence pipeline etc., underground piping for the ease of install and overhaul usually every one section will there are one leading to the inspection shaft on ground, Catch pit port is usually concordant with ground, is covered with inspection well cover.Inspection well cover is usually made of materials such as reinforced concrete, metals, by In cast iron quality inspection well cover service life up to 30~50 years, therefore most countries still generally use cast iron quality basement Well lid.

The missing of inspection well cover often causes more serious safety accidents such as " inspection shaft are wide open, and tiger's jaw gulps down people ", and stealing is First big reason of inspection well cover missing, especially for the inspection well cover of the metal materials such as cast iron cast copper, since inspection well cover pilferage is more It is happened at the few place of secluded people, concealment is strong, is not easy to find, for inspection well cover once stolen, security risk possibly even keeps number As long as month.

The anti-theft measure of inspection well cover in currently available technology mainly uses six kinds of methods：One be iron chains attached method, two It is seam allowance derotation skill method for hinge-coupled method, three, four be bolt plug-hole skill method, and five be tapered end key method, and six close for shift fork Save linkage method.Wherein, first and second kind cannot by well lid and walling crib lock be integrated, be easily opened, with drill rod can by iron chains, Hinge sled is disconnected；The third need to be reversely rotated in place, you can opened and taken well lid away；4th kind has been blocked iron with bolt, nut But as long as dog hole injects in two grooves under bolt head, you can open and take well away by the two ends of the iron wire of a bow Lid；The 5th, though well lid and walling crib locking can be integrated for six kind, it is high to adapted space and cooperation required precision, it need to cast new Well lid is matched, existing well lid cannot be transformed and use, cost is quite big, and can't resolve the problem of " rust protection ".

Invention content

In view of the above-mentioned problems of the prior art, the utility model provides a kind of mechanical anti-theft manhole cover, structure letter It is single, easy to operate, it can effectively prevent being stolen, the antitheft capping especially suitable for underground piping catch pit port.

To achieve the goals above, this mechanical anti-theft manhole cover includes support base, lid, anti-theft fastening bolt and prevents Dismantle plug；

The support base is hollow loop configuration, and the inner surface of loop configuration, which is equipped with, to be protruded from loop configuration The positioning convex platform on surface；

The appearance and size of the lid and the appearance and size of the inner surface of support base loop configuration coordinate and pass through branch The positioning convex platform of support pedestal is erected in support base, and the positioning convex platform upper surface of the thickness of lid and support base is extremely The distance between support base top plane dimensional fits, one end and the support base of lid are articulated and connected, the circumferential direction of lid On the burglarproof seat that is also radially stretched out at least provided with one, burglarproof seat, which is equipped with, in axial direction runs through the antitheft of lid Hole, the bottom end of anti-theft hole are equipped with the positioning convex platform for protruding from antitheft internal surface of hole；Anti-theft hole is corresponded in the support base Position is equipped with tapped blind hole；

The anti-theft fastening bolt is column construction, is equipped with inside anti-theft hole, and the bottom end of column construction is set up On the positioning convex platform of anti-theft hole, the height dimension of column construction and the positioning convex platform upper surface of anti-theft hole to lid top plane it Between apart from dimensional fits, the bottom dead center position of column construction is additionally provided with the stud for extending downwardly stretching, and stud is blind with screw thread The depth dimensions of the length dimension and tapped blind hole of hole screw-thread fit and stud coordinate, and the top dead center position of column construction is set There are plug installing blind, the annular inner surface of plug installing blind to be equipped with internal thread, the hole bottom centre of plug installing blind Position is additionally provided with square structure in the rotation load extended downwardly, and it is regular polygon structure to rotate square structure in load；

The cylindrical outer surface of the Anti-dismantling plug is equipped with the external screw thread with the screw-internal thread fit of plug installing blind, Indent blind hole that the upper surface of Anti-dismantling plug is equipped with coaxial arrangement, extending to lower face, indent blind hole includes straight hole knot The blind hole epimere and blind hole hypomere of structure, the aperture size of blind hole hypomere are more than the aperture size of blind hole epimere, the hole of blind hole hypomere Wall is equipped with multiple positioning protrusion for being uniformly arranged along circumferential direction, and the height dimension of positioning protrusion is no more than blind hole epimere and blind The semidiameter of hole hypomere.

As further improvement of the utility model scheme, the anti-theft fastening bolt is ladder column construction, ladder The upper diameter size of column construction is less than hypomere diameter dimension, and the top of the anti-theft hole is equipped with jump-ring slot and limiting card Spring limits the internal diameter size of clamp spring and the upper diameter dimensional fits of ladder column construction.

As further improvement of the utility model scheme, the bottom hole center of the indent blind hole is equipped with to tamper Unload the extended guide support column in the upper end of plug.

As further improvement of the utility model scheme, in the rotation load square structure be equilateral triangle structure or Regular pentagon structure.

As further improvement of the utility model scheme, the depth dimensions of the plug installing blind are more than Anti-dismantling The thickness of plug.

As further improvement of the utility model scheme, the height dimension of the column construction of the anti-theft fastening bolt The distance between positioning convex platform upper surface to lid top plane less than anti-theft hole size, the top of the anti-theft hole are additionally provided with Dustproof cover.

Compared with prior art, this mechanical anti-theft manhole cover due to include the anti-theft fastening bolt coordinated with anti-theft hole and With anti-theft fastening bolt cooperation Anti-dismantling plug, therefore install rear anti-theft fastening bolt be integrally lying into inside anti-theft hole, Directly anti-theft fastening bolt can not be removed using pipe wrench, and the indent blind hole of Anti-dismantling plug is due to the aperture ruler of blind hole hypomere The very little aperture size more than blind hole epimere, therefore can not directly be made easily with the special spanner of indent blind hole cooperation, Jin Ershi Existing dual Anti-dismantling effectively prevent dismantling privately, simple in structure, easy to operate to substantially reduce stolen risk, can be effective It prevents from being stolen；The setting of tapped blind hole and dustproof cover can prevent the corrosion of anti-theft fastening bolt or not square caused by dirt enters Just it dismantles, the antitheft capping especially suitable for underground piping catch pit port.

Description of the drawings

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the vertical view of Fig. 1；

Fig. 3 is the I of Fig. 1 to partial enlarged view；

Fig. 4 is the structural schematic diagram of the utility model anti-theft fastening bolt；

Fig. 5 is the A-A sections of Fig. 4；

Fig. 6 is the structural schematic diagram of the utility model Anti-dismantling plug；

Fig. 7 is the B-B sections of Fig. 6.

In figure：1, support base, 11, tapped blind hole, 2, lid, 21, burglarproof seat, 22, anti-theft hole, 23, limit clamp spring, 3, Anti-theft fastening bolt, 31, stud, 32, plug installing blind, 33, square structure in rotation load, 4, Anti-dismantling plug, 41, indent Blind hole, 42, positioning protrusion, 43, guide support column.

Specific implementation mode

The utility model is described further below in conjunction with the accompanying drawings.

As shown in Figure 1 and Figure 2, this mechanical anti-theft manhole cover includes support base 1, lid 2, anti-theft fastening bolt 3 and prevents Dismantle plug 4.

The support base 1 is hollow loop configuration, and the inner surface of loop configuration, which is equipped with, protrudes from loop configuration The positioning convex platform of inner surface.

The appearance and size of the lid 2 and the appearance and size of the inner surface of 1 loop configuration of support base coordinate and pass through The positioning convex platform of support base 1 is erected in support base 1, and on the thickness of lid 2 and the positioning convex platform of support base 1 Surface to support base 1 pushes up the distance between plane dimensional fits, and one end and the support base 1 of lid 2 are articulated and connected, lid 2 Opening can be turned down, also at least provided with a burglarproof seat radially stretched out 21, burglarproof seat 21 in the circumferential direction of lid 2 It is equipped with the anti-theft hole 22 in axial direction running through lid 2, the bottom end of anti-theft hole 22, which is equipped with, protrudes from 22 inner surface of anti-theft hole Positioning convex platform；The position that anti-theft hole 22 is corresponded in support base 1 is equipped with tapped blind hole 11.

As shown in Fig. 3, Fig. 4, Fig. 5, the anti-theft fastening bolt 3 is column construction, is equipped in anti-theft hole 22 The bottom end in portion, column construction is erected on the positioning convex platform of anti-theft hole 22, the height dimension of column construction and determining for anti-theft hole 22 Position boss upper surface to lid 2 pushes up the distance between plane dimensional fits, the bottom dead center position of column construction and is additionally provided with downwards Extend the stud 31 stretched out, stud 31 and the length dimension of 11 screw-thread fit of tapped blind hole and stud 31 and tapped blind hole 11 Depth dimensions coordinate, and the top dead center position of column construction is equipped with plug installing blind 32, in the annular of plug installing blind 32 Surface is equipped with internal thread, and the hole bottom centre position of plug installing blind 32, which is additionally provided in the rotation load extended downwardly, just to be tied Structure 33, as shown in figure 5, square structure 33 is regular polygon structure in rotation load.

As shown in Fig. 3, Fig. 6, Fig. 7, the cylindrical outer surface of the Anti-dismantling plug 4 is equipped with and plug installing blind 32 Screw-internal thread fit external screw thread, indent that the upper surface of Anti-dismantling plug 4 is equipped with coaxial arrangement, extending to lower face is blind Hole 41, indent blind hole 41 include the blind hole epimere and blind hole hypomere of straight hole structure, and the aperture size of blind hole hypomere is more than in blind hole The aperture size of section, and as shown in fig. 7, the hole wall of blind hole hypomere is equipped with the multiple positioning protrusion being uniformly arranged along circumferential direction 42, the height dimension of positioning protrusion 42 is not more than the semidiameter of blind hole epimere and blind hole hypomere.

By this mechanical anti-theft manhole cover be mounted on inspection shaft on the basis of after, first will with rotation load in square structure 13 coordinate Interior square head wrench be inserted into rotation load in square structure 13 through 32 one end of plug installing blind, it is then that 31 face screw thread of stud is blind Anti-theft fastening bolt 3 can be screwed in tapped blind hole 11 by square head wrench in rotation and realize lid 2 and support base 1 by hole 11 It is fixedly connected, the blind hole setting of tapped blind hole 11 can prevent the etchant gas in inspection shaft from entering corrosion stud 31, extract interior side out Anti-dismantling plug 4 is screwed in into 32 inside of plug installing blind by the special spanner coordinated with Anti-dismantling plug 4 after spanner, It installs 3 entirety of rear anti-theft fastening bolt to be lying into inside anti-theft hole 22, therefore pipe wrench can not be used directly by antitheft fastening spiral shell Bolt 3 is removed, and the indent blind hole 41 of Anti-dismantling plug 4 is more than the aperture ruler of blind hole epimere due to the aperture size of blind hole hypomere It is very little, therefore the special spanner coordinated with indent blind hole 41 can not directly make easily, and then realize and effectively prevent dismantling privately, from And substantially reduce stolen risk.

The loss of anti-theft fastening bolt 3 is caused when normally dismounting anti-theft fastening bolt 3 overhauls inspection shaft in order to prevent, As further improvement of the utility model scheme, as shown in figure 3, the anti-theft fastening bolt 3 is ladder column construction, rank The upper diameter size of terraced column construction is less than hypomere diameter dimension, and the top of the anti-theft hole 22 is equipped with jump-ring slot and limit Clamp spring 23 limits the upper diameter dimensional fits of the internal diameter size and ladder column construction of clamp spring 23.Ladder column construction is antitheft The setting of fastening bolt 3 and limit clamp spring 23 can prevent antitheft fastening not influencing the under the premise of of dismantling anti-theft fastening bolt 3 Bolt 3 is deviate from from 22 inside of anti-theft hole.

The merging of non-dedicated spanner damages Anti-dismantling plug 4 in order to prevent, as the further of the utility model Improvement project, as shown in Figure 6, Figure 7, the bottom hole center of the indent blind hole 41 are equipped with to the upper end of Anti-dismantling plug 4 Extended guide support column 43,43 one side of guide support column can pair special spanner coordinated with indent blind hole 41 progress Installation or removal are oriented to, and on the other hand can be reduced the inner space of Anti-dismantling plug 4, be prevented the merging of non-dedicated spanner to anti- Dismounting plug 4 damages.

It is antitheft in order to further realize, as further improvement of the utility model scheme, side in the rotation load Structure 13 is equilateral triangle structure or regular pentagon structure, and equilateral triangle structure or regular pentagon structure directly can cast or forge and press Molding.

In order to further prevent dismounting Anti-dismantling plug 4, as further improvement of the utility model scheme, described is stifled The depth dimensions of head installing blind 32 are more than the thickness of Anti-dismantling plug 4, i.e., its front end face does not have after Anti-dismantling plug 4 is installed Inside the front end face for entering plug installing blind 32, and then dismounting Anti-dismantling plug 4 can be further prevented.

In order to further prevent the corrosion of anti-theft fastening bolt 3 caused by dirt enters or be inconvenient to dismantle, as this reality It is further improved scheme with novel, as shown in figure 3, the height dimension of the column construction of the anti-theft fastening bolt 3 is less than The positioning convex platform upper surface of anti-theft hole 22 to lid 2 pushes up the distance between plane size, the top of the anti-theft hole 22 and also sets There is dustproof cover.

This mechanical anti-theft manhole cover due to include the anti-theft fastening bolt 3 coordinated with anti-theft hole 22 and with antitheft fastening spiral shell The Anti-dismantling plug 4 that bolt 3 coordinates, therefore install 3 entirety of rear anti-theft fastening bolt and be lying into inside anti-theft hole 22, can not use Pipe wrench directly removes anti-theft fastening bolt 3, and the indent blind hole 41 of Anti-dismantling plug 4 is big due to the aperture size of blind hole hypomere In the aperture size of blind hole epimere, therefore the special spanner coordinated with indent blind hole 41 can not directly make easily, and then realize Dual Anti-dismantling effectively prevent dismantling privately, simple in structure, easy to operate to substantially reduce stolen risk, can effectively prevent Only it is stolen；The setting of tapped blind hole 11 and dustproof cover can prevent the corrosion or not of the anti-theft fastening bolt 3 caused by dirt enters It is easy to disassemble, the antitheft capping especially suitable for underground piping catch pit port.

Claims

1. a kind of mechanical anti-theft manhole cover, including support base (1) and lid (2)；Support base (1) is hollow ring junction Structure, the inner surface of loop configuration are equipped with the positioning convex platform for protruding from loop configuration inner surface；The appearance and size and branch of lid (2) The appearance and size for supportting the inner surface of pedestal (1) loop configuration coordinates and is erected at support by the positioning convex platform of support base (1) On pedestal (1), and the thickness of lid (2) and positioning convex platform upper surface to the support base (1) of support base (1) push up plane The distance between dimensional fits, one end of lid (2) be articulated and connected with support base (1)；It is characterized in that,

Also at least provided with a burglarproof seat radially stretched out (21), burglarproof seat in the circumferential direction of the lid (2) (21) it is equipped with the anti-theft hole (22) in axial direction running through lid (2), the bottom end of anti-theft hole (22), which is equipped with, protrudes from anti-theft hole (22) positioning convex platform of inner surface；The position that anti-theft hole (22) is corresponded in the support base (1) is equipped with tapped blind hole (11)；

This mechanical anti-theft manhole cover further includes anti-theft fastening bolt (3) and Anti-dismantling plug (4)；

Anti-theft fastening bolt (3) is column construction, it is internal in anti-theft hole (22) to be equipped with, and the bottom end of column construction is erected at anti- On the positioning convex platform for stealing hole (22), the height dimension of column construction and the positioning convex platform upper surface of anti-theft hole (22) to lid (2) The distance between top plane dimensional fits, the bottom dead center position of column construction are additionally provided with the stud (31) for extending downwardly stretching, Stud (31) is matched with the length dimension of tapped blind hole (11) screw-thread fit and stud (31) and the depth dimensions of tapped blind hole (11) It closes, the top dead center position of column construction is equipped with plug installing blind (32), on the annular inner surface of plug installing blind (32) Equipped with internal thread, the hole bottom centre position of plug installing blind (32) is additionally provided with square structure in the rotation load extended downwardly (33), it is regular polygon structure to rotate square structure (33) in load；

The cylindrical outer surface of Anti-dismantling plug (4) is equipped with the external screw thread with the screw-internal thread fit of plug installing blind (32), prevents Indent blind hole (41) that the upper surface for dismantling plug (4) is equipped with coaxial arrangement, extending to lower face, indent blind hole (41) packet The blind hole epimere and blind hole hypomere of straight hole structure are included, the aperture size of blind hole hypomere is more than the aperture size of blind hole epimere, blind hole The hole wall of hypomere is equipped with the multiple positioning protrusion (42) being uniformly arranged along circumferential direction, and the height dimension of positioning protrusion (42) is not More than the semidiameter of blind hole epimere and blind hole hypomere.

2. mechanical anti-theft manhole cover according to claim 1, which is characterized in that the anti-theft fastening bolt (3) is Ladder column construction, the upper diameter size of ladder column construction are less than hypomere diameter dimension, the anti-theft hole (22) it is upper Portion is equipped with jump-ring slot and limit clamp spring (23), the upper diameter size of the internal diameter size and ladder column construction of limit clamp spring (23) Cooperation.

3. mechanical anti-theft manhole cover according to claim 1 or 2, which is characterized in that the indent blind hole (41) Bottom hole center is equipped with the guide support column (43) being extended to the upper end of Anti-dismantling plug (4).

4. mechanical anti-theft manhole cover according to claim 1 or 2, which is characterized in that just tied in the rotation load Structure is equilateral triangle structure or regular pentagon structure.

5. mechanical anti-theft manhole cover according to claim 1 or 2, which is characterized in that the plug installing blind (32) depth dimensions are more than the thickness of Anti-dismantling plug (4).

6. mechanical anti-theft manhole cover according to claim 5, which is characterized in that the anti-theft fastening bolt (3) Positioning convex platform upper surface to the lid (2) that the height dimension of column construction is less than anti-theft hole (22) pushes up the distance between plane ruler Very little, the top of the anti-theft hole (22) is additionally provided with dustproof cover.