Anti-loose inspection well

Abstract

The utility model belongs to the technical field of inspection wells, and particularly relates to an anti-loose inspection well which comprises an inspection well base, a well mouth is formed in the upper portion of the inspection well base, and a fixing edge is formed at the well mouth. The well lid is arranged on the well mouth and abuts against the fixing edge. The plurality of upper fixing holes are uniformly distributed on the well lid along the circumference; the multiple lower fixing holes are evenly distributed in the fixing edge according to the circumference; the plurality of anti-loose connecting pieces are connected and penetrate into the upper fixing holes and are connected with the lower fixing holes; wherein the number of the lower fixing holes is N times that of the upper fixing holes.

Description

Technical Field

[0001] The utility model belongs to the technical field of loose manholes, in particular to an anti-loose manhole. Background Art

[0002] There are many underground pipelines in urban construction, such as sewers, underground gas pipelines, water pipelines, power pipelines, communication pipelines, national defense pipelines, etc. These pipelines must have an exit to the ground at intervals. The section from the pipeline to the ground is called a manhole. The manhole opening is usually flush with the ground, so a cover is needed. The cover used to cover the manhole is called a manhole cover. Manhole covers are usually made of reinforced cement, metal, reinforced plastic and other materials, and are mainly round and square in shape. Many manhole covers are generally installed on the road. After being crushed by cars for a long time, the manhole covers are deformed, and the manhole covers and manhole openings become loose, and the manhole covers make abnormal noises. Utility Model Content

[0003] The purpose of the utility model is to provide a manhole with a simple structure and anti-loosening in view of the above-mentioned technical problems.

[0004] In view of this, the utility model provides an anti-loosening manhole, comprising:

[0005] A manhole seat, a manhole opening is formed on the upper part of the manhole seat, and a fixed edge is formed at the well opening;

[0006] A manhole cover, which is arranged on the manhole opening and rests on the fixed edge;

[0007] Upper fixing holes, a plurality of upper fixing holes are evenly distributed on the manhole cover according to the circumference;

[0008] Lower fixing holes, a plurality of lower fixing holes are evenly distributed on the fixing edge according to the circumference;

[0009] Anti-loosening connectors, a plurality of anti-loosening connectors are connected and penetrated into the upper fixing holes and connected to the lower fixing holes;

[0010] The number of the lower fixing holes is N times the number of the upper fixing holes.

[0011] In the above technical solution, further, the value of N is 2 or 3.

[0012] In the above technical solution, further, the lower fixing hole is a threaded blind hole, and the upper fixing hole is a non-threaded countersunk through hole.

[0013] In the above technical solution, further, the anti-loosening connection piece includes:

[0014] An external connecting piece, which is inserted into the upper fixing hole and is threadedly connected with the lower fixing hole, and a stepped hole is formed in the middle of the external connecting piece;

[0015] The inner connecting piece is arranged in the stepped hole and is threadedly connected to the bottom of the stepped hole.

[0016] In the above technical solution, further, the external connecting member includes:

[0017] An upper supporting section, the outer edge of which is stepped, and the end surface of which abuts against the upper fixing hole;

[0018] A middle anti-loosening section, wherein two middle anti-loosening sections are symmetrically arranged at one end of the upper supporting section;

[0019] The lower connecting section is connected to the other end of the two middle anti-loosening sections.

[0020] In the above technical solution, further, the middle anti-loosening section includes:

[0021] A semi-arc-shaped portion, wherein a plurality of semi-arc-shaped portions are equidistantly distributed, and an anti-loosening gap is formed between adjacent semi-arc-shaped portions;

[0022] The connecting portion connects the ends of adjacent semi-arc portions.

[0023] In the above technical solution, further, the lower connecting section includes:

[0024] An external threaded portion connected to the lower fixing hole;

[0025] An end limit portion, which is located at the connection between the external thread portion and the middle anti-loosening section;

[0026] End cutting portions, wherein a plurality of end cutting portions are evenly distributed on the end surface of the external thread portion according to the circumference, and divide the external thread portion into a plurality of evenly spaced fan-shaped structures;

[0027] The stepped hole is provided with an anti-loosening connection section in the external threaded portion.

[0028] In the above technical solution, further, the anti-loosening connection section includes:

[0029] A threaded connection section, the threaded connection section being arranged inwardly from the end surface of the lower connection section;

[0030] The conical extrusion portion is located at the lower side of the threaded connection section, and the conical extrusion portion is a cone with a decreasing diameter from the threaded connection portion downward.

[0031] In the above technical solution, further, the inner connecting member includes:

[0032] An inner positioning screw rod, which passes through the stepped hole and is fixedly connected to the lower connecting section;

[0033] An inner adjusting spring, wherein the inner adjusting spring is sleeved on the inner positioning screw, and two ends of the inner adjusting spring are respectively against the end surface of the lower connecting section and the screw head of the inner positioning screw;

[0034] The inner extrusion head is integrally formed at the end of the inner positioning screw and is tapered.

[0035] The beneficial effects of the utility model are:

[0036] 1. The setting of the external connecting piece makes the connection between the manhole seat and the manhole cover have a certain degree of flexibility;

[0037] 2. The setting of the internal connecting parts can adjust the pre-tightening effect of the external connecting parts, thereby having a good anti-loosening effect on the manhole cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural schematic diagram of the utility model;

[0039] Figure 2 It is a structural schematic diagram of the manhole seat in the utility model;

[0040] Figure 3 It is a cross-sectional schematic diagram of the utility model;

[0041] Figure 4 yes Figure 3 A partial enlarged view of point Ⅰ in the middle;

[0042] Figure 5 It is a structural schematic diagram of the anti-loosening connection member in the present invention;

[0043] Figure 6 is a cross-sectional schematic diagram of the anti-loosening connection member of the present invention;

[0044] Figure 7 It is a structural schematic diagram of the lower connecting section in the present invention;

[0045] The markings in the figure are: 1-manhole seat, 2-fixed edge, 3-manhole cover, 4-upper fixing hole, 5-lower fixing hole, 6-upper supporting section, 7-middle anti-loosening section, 7a-semi-arc portion, 7b-connecting portion, 8-lower connecting section, 8a-external threaded portion, 8b-end limiting portion, 8c-end cutting portion, 9-anti-loosening connecting section, 9a-threaded connecting section, 9b-conical extrusion portion, 10-inner positioning screw, 11-inner adjusting spring, 12-inner extrusion head. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0047] Embodiment 1:

[0048] This embodiment provides an anti-loosening manhole, including:

[0049] A manhole seat 1, a manhole opening is formed at the upper part of the manhole seat 1, and a fixed edge 2 is formed at the well opening;

[0050] A manhole cover 3, which is arranged on the manhole opening and rests on the fixed edge 2;

[0051] Upper fixing holes 4, a plurality of upper fixing holes 4 are evenly distributed on the manhole cover 3 along the circumference;

[0052] A lower fixing hole 5, wherein a plurality of lower fixing holes 5 are evenly distributed on the fixing edge 2 according to the circumference;

[0053] Anti-loosening connectors, a plurality of anti-loosening connectors are connected and penetrated into the upper fixing hole 4 and connected to the lower fixing hole 5;

[0054] The number of the lower fixing holes 5 is N times the number of the upper fixing holes 4 .

[0055] In this embodiment, the manhole seat 1 and the manhole cover 3 are both made of ductile iron. The fixed edge 2 arranged at the wellhead is used to support the manhole cover 3 and prevent the manhole cover 3 from sinking, and can ensure that the manhole cover 3 is flush with the end surface of the manhole seat 1; and the setting of the upper fixing holes 4 and the lower fixing holes 5 can facilitate the connection between the manhole seat 1 and the manhole cover 3; and the anti-loosening connecting piece can not only ensure the connection between the manhole seat 1 and the manhole cover 3, but also prevent the manhole cover 3 from loosening; and the number of the lower fixing holes 5 is N times the number of the upper fixing holes 4, so that it is easy to position during installation.

[0056] Embodiment 2:

[0057] This embodiment provides an anti-loosening manhole, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0058] The value of N is 2 or 3.

[0059] In this embodiment, the lower fixing hole 5 is 2 or 3 times the size of the upper fixing hole 4 , thereby reducing the difficulty of processing and facilitating the installation and positioning of the manhole cover 3 .

[0060] Embodiment 3:

[0061] This embodiment provides an anti-loosening manhole, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0062] The lower fixing hole 5 is a threaded blind hole, and the upper fixing hole 4 is a countersunk through hole without thread.

[0063] In this embodiment, the lower fixing hole 5 is a threaded blind hole to facilitate the connection of the anti-loosening connector, and the upper fixing hole 4 is a non-threaded countersunk through hole, which can facilitate the passage of the anti-loosening connector and ensure that the anti-loosening connector protrudes from the end face of the manhole cover 3 after fixation.

[0064] Embodiment 4:

[0065] This embodiment provides an anti-loosening manhole, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0066] Anti-loosening connection parts include:

[0067] An external connecting piece, which is inserted into the upper fixing hole 4 and threadedly connected to the lower fixing hole 5, and a stepped hole is formed in the middle of the external connecting piece;

[0068] The inner connecting piece is arranged in the stepped hole and is threadedly connected to the bottom of the stepped hole.

[0069] In this embodiment, the external connecting member is used to connect the manhole seat 1 and the manhole cover 3, and can play a role of good elastic connection between the manhole seat 1 and the manhole cover 3, thereby reducing the effect of loose connection caused by vibration; and the internal connecting member is used to adjust the preload force of the external connecting member, and can also adjust the tightness of the connection between the manhole seat 1 and the manhole cover 3.

[0070] Embodiment 5:

[0071] This embodiment provides an anti-loosening manhole, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0072] External connections include:

[0073] An upper support section 6, the outer edge of which is stepped, and the end surface of which abuts against the upper fixing hole 4;

[0074] A middle anti-loosening section 7, wherein two middle anti-loosening sections 7 are symmetrically arranged at one end of the upper supporting section 6;

[0075] The lower connecting section 8 is connected to the other end of the two middle anti-loosening sections 7.

[0076] In this embodiment, the upper support section 6 is provided to facilitate the connection with the manhole cover 3, and the stepped hole is formed with a regular hexagonal hole at the position of the upper support section 6. The provision of the regular hexagonal hole can facilitate the external connection piece to be screwed into the lower fixing hole 5; the middle anti-loosening section 7 plays a good elastic connection role, thereby reducing the occurrence of loose connection; and the lower connection section 8 is provided for connection with the lower fixing hole 5, thereby ensuring the stability of the connection between the manhole seat 1 and the manhole cover 3. And the external connection piece is made of an elastic metal material such as spring steel as a whole.

[0077] Embodiment 6:

[0078] This embodiment provides an anti-loosening manhole, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0079] The middle anti-loosening section 7 comprises:

[0080] A semi-arc-shaped portion 7a, wherein a plurality of semi-arc-shaped portions 7a are equidistantly distributed, and an anti-loosening gap is formed between adjacent semi-arc-shaped portions 7a;

[0081] The connecting portion 7b connects the ends of the adjacent semi-arc portions 7a.

[0082] In this embodiment, an anti-loosening gap is formed between adjacent semi-arc-shaped portions 7a and adjacent portions are connected by connecting portions 7b, so that the middle anti-loosening section 7 has good elasticity, thereby making the external connecting piece have a good elastic connection effect. The arrangement of two symmetrical middle anti-loosening sections 7 can reduce the distortion of the entire external connecting piece when twisting.

[0083] Embodiment 7:

[0084] This embodiment provides an anti-loosening manhole, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0085] The lower connecting section 8 comprises:

[0086] An external threaded portion 8a, the external threaded portion 8a is connected to the lower fixing hole 5;

[0087] An end stopper 8b, which is located at the connection between the external threaded portion 8a and the middle anti-loosening section 7;

[0088] An end cut-in portion 8c, wherein a plurality of end cut-in portions 8c are evenly distributed on the end surface of the external thread portion 8a according to the circumference, and divide the external thread portion 8a into a plurality of evenly spaced fan-shaped structures;

[0089] The stepped hole is provided with an anti-loosening connection section 9 in the external threaded portion 8a.

[0090] In this embodiment, the setting of the external threaded portion 8a can facilitate the connection between the lower connecting section 8 and the lower fixing hole 5, the end limit portion 8b can limit the depth of the external threaded portion 8a being screwed into the lower fixing hole 5, and the setting of the cutting portion enables the external threaded portion 8a to have a certain ability to be squeezed and deformed, thereby preventing the external threaded portion from breaking; and the anti-loosening connecting section 9 can prevent the connection between the external threaded portion 8a and the lower fixing hole 5 from loosening by cooperating with the internal connecting piece.

[0091] Embodiment 8:

[0092] This embodiment provides an anti-loosening manhole, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0093] The anti-loosening connection section 9 comprises:

[0094] A threaded connection section 9a, wherein the threaded connection section 9a is arranged inwardly from the end surface of the lower connection section 8;

[0095] The conical extrusion portion 9b is located at the lower side of the threaded connection section 9a, and the conical extrusion portion 9b is a conical shape with a diameter passing downward from the threaded connection portion 7b.

[0096] In this embodiment, the threaded connection section 9a is used to facilitate the threaded fixation of the inner connecting member; and when the conical extrusion portion 9b continues to be extruded inward after the inner connecting member is screwed into the threaded connection section 9a, the outer threaded portion 8a will tend to expand and deform outward, so that the outer threaded portion 8a can be firmly fixed on the lower fixing hole 5.

[0097] Embodiment 9:

[0098] This embodiment provides an anti-loosening manhole, which, in addition to the technical solutions of the above embodiments, also has the following technical features. The internal connecting piece includes:

[0099] An inner positioning screw 10, which passes through the stepped hole and is fixedly connected to the lower connecting section 8;

[0100] An inner adjusting spring 11, which is sleeved on the inner positioning screw 10, and the two ends of the inner adjusting spring 11 are respectively against the end surface of the lower connecting section 8 and the screw head of the inner positioning screw 10;

[0101] The inner extrusion head 12 is integrally formed at the end of the inner positioning screw 10 and is tapered.

[0102] In this embodiment, the setting of the internal threaded rod can adjust the tightness of the middle anti-loosening section 7 of the external connecting piece, thereby adjusting the tightness of the connection between the manhole seat 1 and the manhole cover 3, thereby preventing the connection between the manhole seat 1 and the manhole cover 3 from loosening; and the inner adjustment ring can adjust the depth of the inner positioning screw 10 screwed into the external connecting piece, and can prevent the inner positioning screw 10 from loosening; the inner extrusion head 12 set at the end of the inner positioning screw 10 can better cooperate with the conical extrusion portion 9b, thereby better preventing the loosening of the external connecting piece.

[0103] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. An anti-loosening manhole, characterized in that: include: A manhole seat (1), wherein a manhole opening is formed at the upper portion of the manhole seat (1), and a fixed edge (2) is formed at the well opening; A manhole cover (3), wherein the manhole cover (3) is arranged on the manhole opening and abuts against the fixed edge (2); Upper fixing holes (4), a plurality of the upper fixing holes (4) are evenly distributed on the manhole cover (3) along a circumference; A plurality of lower fixing holes (5) are evenly distributed on the fixing edge (2) along a circumference; Anti-loosening connecting pieces, a plurality of said anti-loosening connecting pieces are connected and penetrated into the upper fixing hole (4) and connected to the lower fixing hole (5); The number of the lower fixing holes (5) is N times the number of the upper fixing holes (4).

2. The anti-loosening manhole according to claim 1, characterized in that: The value of N is 2 or 3.

3. The anti-loosening manhole according to claim 1, characterized in that: The lower fixing hole (5) is a threaded blind hole, and the upper fixing hole (4) is a countersunk through hole without threads.

4. The anti-loosening manhole according to any one of claims 1 to 3, characterized in that: The anti-loosening connection piece comprises: An external connecting piece, the external connecting piece is inserted into the upper fixing hole (4) and connected to the lower fixing hole (5), and a stepped hole is formed in the middle of the external connecting piece; The inner connecting piece is arranged in the stepped hole and is threadedly connected to the bottom of the stepped hole.

5. The anti-loosening manhole according to claim 4, characterized in that: The external connecting member comprises: An upper supporting section (6), wherein the outer edge of the upper supporting section (6) is stepped, and the end surface abuts against the upper fixing hole (4); A middle anti-loosening section (7), wherein two middle anti-loosening sections (7) are symmetrically arranged at one end of the upper supporting section (6); A lower connecting section (8) is connected to the other end of the two middle anti-loosening sections (7).

6. The anti-loosening manhole according to claim 5, characterized in that: The middle anti-loosening section (7) comprises: A semi-arc-shaped portion (7a), wherein a plurality of the semi-arc-shaped portions (7a) are equidistantly distributed, and an anti-loosening gap is formed between adjacent semi-arc-shaped portions (7a); A connecting portion (7b), wherein the connecting portion (7b) connects the ends of adjacent semi-arc portions (7a).

7. The anti-loosening manhole according to claim 6, characterized in that: The lower connecting section (8) comprises: An external threaded portion (8a), wherein the external threaded portion (8a) is connected to the lower fixing hole (5); An end stopper (8b), wherein the end stopper (8b) is located at the connection between the external threaded portion (8a) and the middle anti-loosening section (7); An end cut-in portion (8c), wherein a plurality of the end cut-in portions (8c) are evenly distributed on the end surface of the external thread portion (8a) along a circumference, and divide the external thread portion (8a) into a plurality of evenly spaced fan-shaped structures; The stepped hole is provided with an anti-loosening connection section (9) in the external threaded portion (8a).

8. The anti-loosening manhole according to claim 7, characterized in that: The anti-loosening connection section (9) comprises: A threaded connection section (9a), wherein the threaded connection section (9a) is arranged inwardly from the end surface of the lower connection section (8); The conical extrusion portion (9b) is located at the lower side of the threaded connection section (9a), and the conical extrusion portion (9b) is a conical shape with a diameter passing downward from the threaded connection portion (7b).

9. The anti-loosening manhole according to claim 8, characterized in that: The inner connecting member comprises: An inner positioning screw (10), the inner positioning screw (10) penetrates into the stepped hole and is fixedly connected to the lower connecting section (8); An inner adjusting spring (11), wherein the inner adjusting spring (11) is sleeved on the inner positioning screw (10), and the two ends of the inner adjusting spring (11) are respectively against the end surface of the lower connecting section (8) and the screw head of the inner positioning screw (10); The inner extrusion head (12) is integrally formed at the end of the inner positioning screw (10), and the inner extrusion head (12) is conical.

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