A type of anti-theft manhole cover

Abstract

This utility model belongs to the field of infrastructure, specifically relating to an anti-theft manhole cover, including a manhole base and a cover body. The manhole base has an arc-shaped movable groove, a notch communicating with the movable groove, and a limiting groove wider than the movable groove and communicating with it. The limiting groove is located at the end of the movable groove furthest from the notch. A limiting cylinder is provided inside the cover body, and a limiting through groove communicating with the limiting cylinder is provided on the cover body. A limiting component is provided inside the cover body, penetrating the limiting through groove and rotatably disposed within the limiting cylinder and the movable groove. Through the setting of the limiting component and the limiting groove, the cover body can be locked onto the manhole base, thus preventing the theft of the manhole cover.

Description

Technical Field

[0001] This utility model belongs to the field of infrastructure technology, and more specifically, it relates to an anti-theft manhole cover. Background Technology

[0002] A cover is used to cover roads or deep wells in homes to prevent people or objects from falling in. According to the material, it can be divided into metal covers, high-strength fiber cement concrete covers, resin covers, etc. It is generally round and can be used in green belts, sidewalks, motor vehicle lanes, docks, alleys, etc.

[0003] With the rapid development of urban construction, various pipelines such as communication cables and power cables are installed under urban roads. These pipelines typically contain signal lines for mobile operators or equipment used for signal transmission. To facilitate maintenance, inspection manholes are installed on the roads, with openable and closable covers on top of them.

[0004] However, as urban functions become increasingly sophisticated, theft, loss, and damage to the city's roofs occur frequently, seriously affecting the development of municipal construction and industries such as power and communications in my country, and even causing major traffic accidents and resulting in huge economic losses.

[0005] Therefore, in view of this, we will study and improve the existing structure and its shortcomings to provide an anti-theft manhole cover, in order to achieve a more practical value. Utility Model Content

[0006] In view of the problems mentioned in the background art above, this utility model provides an anti-theft manhole cover. It has a good anti-theft effect and can prevent the manhole cover from being stolen.

[0007] The technical solution adopted by this utility model is as follows: an anti-theft manhole cover, including a manhole base and a cover body, the manhole base having an arc-shaped movable groove, a notch communicating with the movable groove, and a limiting groove with a width greater than the movable groove and communicating with the movable groove, the limiting groove being located at the end of the movable groove away from the notch, a limiting cylinder being provided inside the cover body, a limiting through groove communicating with the limiting cylinder being provided on the cover body, and a limiting component being provided inside the cover body that penetrates the limiting through groove and is rotatably disposed within the limiting cylinder and the movable groove.

[0008] The technical principle of this utility model is as follows: the limiting component enters the limiting groove through the notch, and the limiting component is rotated horizontally to rotate inside the limiting cylinder. At the same time, the limiting component moves in the movable groove until the limiting component enters the limiting groove. The limiting groove limits the limiting component, which can lock the cover and the well base together, thus preventing the well cover from being stolen.

[0009] Furthermore, the limiting assembly includes a mounting column rotatably disposed within the limiting cylinder and passing through the limiting groove, an elastic element coaxially sleeved on the mounting column, a limiting rod fixedly installed at the bottom end of the mounting column, and a bearing coaxially sleeved on the mounting column. One end of the elastic element is fixedly installed on the bearing, and the other end of the elastic element is fixedly installed on the limiting cylinder. The end of the mounting column away from the well seat is detachably connected to a handle for driving the mounting column to rotate.

[0010] Furthermore, the cover has an installation groove that communicates with the limiting through groove for placing the limiting rod.

[0011] Furthermore, the movable groove, notch, limiting groove, limiting rod, and mounting groove are all in two sets, and are symmetrically arranged along the vertical center plane of the cover.

[0012] Furthermore, an anti-theft groove is provided on the side of the cover away from the well seat, and the mounting column is set in the anti-theft groove. A placement groove is provided on one side wall of the anti-theft groove, and a locking groove is provided on the other side wall of the anti-theft groove. An anti-theft plate is slidably installed in the placement groove, and a locking device is provided on the anti-theft plate to lock the anti-theft plate in the locking groove. A through hole communicating with the locking groove is provided on the cover.

[0013] Furthermore, the vertical cross-section of the well base is stepped, and the cover is equipped with an anti-theft ring that abuts against the well base.

[0014] The beneficial effects of this utility model are:

[0015] 1. By setting the limiting components and limiting grooves, the cover can be locked on the manhole base, thus preventing the manhole cover from being stolen.

[0016] 2. When the cover is locked to the well base, the elastic element is in a compressed state. Under the reaction force of the elastic element and the action of the limiting groove, the limiting rod can be tightly attached to the limiting groove, which can prevent the well cover from being stolen.

[0017] 3. The anti-theft groove can further enhance the anti-theft effect of the manhole cover, and the anti-theft groove can reduce the entry of external dust into the communication and power pipelines. Attached Figure Description

[0018] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the well base in this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the cover body in this utility model;

[0022] Figure 4This is a schematic diagram of the limiting component in this utility model.

[0023] The attached diagram is labeled as follows:

[0024] 1. Well base; 101. Movable groove; 102. Notch; 103. Limiting groove;

[0025] 2. Cover; 201. Limiting groove; 202. Mounting groove; 203. Anti-theft groove; 204. Placement groove; 205. Locking groove;

[0026] 3. Limiting cylinder;

[0027] 4. Limiting assembly; 401. Mounting post; 402. Elastic element; 403. Limiting rod; 404. Bearing;

[0028] 5. Handle; 6. Anti-theft plate; 7. Locking device; 8. Through hole; 9. Anti-theft ring. Detailed Implementation

[0029] like Figures 1-4 As shown, an anti-theft manhole cover includes a manhole base 1 and a cover body 2. The manhole base 1 has an arc-shaped movable groove 101, a notch 102 communicating with the movable groove 101, and a limiting groove 103 with a width greater than the movable groove 101 and communicating with the movable groove 101. The limiting groove 103 is located at the end of the movable groove 101 away from the notch 102. A limiting cylinder 3 is provided inside the cover body 2. A limiting through groove 201 communicating with the limiting cylinder 3 is provided on the cover body 2. A limiting component 4 is provided inside the cover body 2, penetrating the limiting through groove 201 and rotatably disposed within the limiting cylinder 3 and the movable groove 101.

[0030] The angle between the two sides of the movable groove 101 and the center is between 45° and 180°. To reduce unnecessary rotation paths and ensure the limiting effect on the limiting component 4, it is preferably 90°. The notch 102, the movable groove 101 and the limiting groove 103 are all set on the inner side wall of the well base 1. The notch 102 is set on the upper side of the well base 1. The lower part of the notch 102 is connected to the movable groove. The bottom of the limiting groove 103 is on the same horizontal plane as the movable groove 101. The width of the limiting groove 103 is greater than the width of the movable groove 101.

[0031] The limiting component 4 enters the limiting groove 103 through the notch 102. The limiting component 4 is rotated horizontally, causing it to rotate within the limiting cylinder 3. At the same time, the limiting component 4 moves within the movable groove 101 until it enters the limiting groove 103. The limiting groove 103 then limits the limiting component 4, thus locking the cover 2 and the well base 1 together, which can prevent the well cover from being stolen.

[0032] Furthermore, such as Figure 3 and Figure 4As shown, the limiting assembly 4 includes a mounting post 401 rotatably disposed inside the limiting cylinder 3 and passing through the limiting through groove 201, an elastic element 402 coaxially sleeved on the mounting post 401, a limiting rod 403 fixedly installed at the bottom end of the mounting post 401, and a bearing 404 coaxially sleeved on the mounting post 401. The upper end of the elastic element 402 is fixedly installed on the bearing 404, and the other end of the elastic element 402 is fixedly installed on the limiting cylinder 3. The upper end of the mounting post 401 is detachably connected to a handle 5 for driving the mounting post 401 to rotate.

[0033] Here, the elastic element 402 is preferably a compression spring. The upper side of the mounting post 401 has a screw hole, and the handle 5 is threaded into the screw hole. The inner ring of the bearing 404 is fixed on the mounting post 401, and the upper end of the elastic element 402 is fixed on the outer ring of the bearing 404. When the mounting post 401 is pressed down, the bearing 404 moves down synchronously, compressing the elastic element 402. At the same time, the mounting post 401 drives the limiting rod 403 to move down through the notch 102 and enter the movable groove 101. At this time, the elastic element 402 is in a compressed state. By horizontally rotating the mounting post 401 through handle 5, the mounting post 401 rotates within the bearing 404. Simultaneously, the mounting post 401 rotates within the limiting cylinder 3, causing the limiting rod 403 to rotate within the movable groove 101. After rotating the mounting post 401 horizontally by 90°, the limiting rod 403 enters the limiting groove 103. Under the action of the elastic element 402, the elastic element 402 pushes the bearing 404 upward, which in turn drives the mounting post 401 upward, thereby driving the limiting rod 403 upward. This engages the limiting rod 403 within the limiting groove 103, thus locking the cover 2 and the well base 1 together and preventing the well cover from being stolen. After the cover 2 and the well base 1 are locked, the handle 5 can be removed.

[0034] Furthermore, such as Figure 3 As shown, the cover 2 has an installation groove 202 that communicates with the limiting through groove 201 and is used to place the limiting rod 403.

[0035] With the installation slot 202, the limit rod 403 can be placed in the installation slot 202 when it is not working, thereby avoiding wear on the limit rod 403.

[0036] Furthermore, such as Figures 2-4 As shown, the movable groove 101, notch 102, limiting groove 103, limiting rod 403 and mounting groove 202 are all in two sets, and are all symmetrically arranged along the vertical center plane of the cover 2.

[0037] The symmetrically arranged notch 102, movable groove 101, limiting groove 103, limiting rod 403 and mounting groove 202 can further improve the locking effect between the limiting component 4 and the well base 1, thereby further improving the anti-theft capability of the well cover and preventing the well cover from being stolen.

[0038] Furthermore, such as Figure 1 As shown, the cover 2 has an anti-theft groove 203 on the side away from the well base 1. The mounting post 401 is set in the anti-theft groove 203. A placement groove 204 is opened on one side wall of the anti-theft groove 203, and a locking groove 205 is opened on the other side wall of the anti-theft groove 203. An anti-theft plate 6 is slidably arranged in the placement groove 204. A locking element 7 is provided on the anti-theft plate 6 to lock the anti-theft plate 6 in the locking groove 205. A through hole 8 communicating with the locking groove 205 is opened on the cover 2.

[0039] When the cover 2 is locked to the well base 1, the mounting post 401 is positioned in the anti-theft groove 203. Pull the anti-theft plate 6 so that it slides horizontally in the placement groove 204 until it enters the locking groove 205. The operator can lock the anti-theft plate 6 in the locking groove 205 through the through hole 8 and then through the locking part 7, thereby further improving the anti-theft capability of the well cover and preventing the well cover from being stolen.

[0040] Furthermore, such as Figure 1 and Figure 2 As shown, the vertical cross-section of the well base 1 is stepped, and the cover 2 is provided with an anti-theft ring 9 that abuts against the well base 1.

[0041] The anti-theft ring 9 and the stepped design can fasten the cover 2 and the well base 1 together, preventing the entry of a pry bar, thereby further improving the anti-theft capability of the well cover and preventing it from being stolen.

[0042] The present invention has been described in detail above. The specific embodiments are provided only to help understand the method and core idea of ​​the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A theft-proof manhole cover, characterized by: The well includes a well base (1) and a cover (2). The well base (1) has an arc-shaped movable groove (101), a notch (102) communicating with the movable groove (101), and a limiting groove (103) with a width greater than the movable groove (101) and communicating with the movable groove (101). The limiting groove (103) is located at the end of the movable groove (101) away from the notch (102). The cover (2) is provided with a limiting cylinder (3). The cover (2) has a limiting through groove (201) communicating with the limiting cylinder (3). The cover (2) is provided with a limiting component (4) that passes through the limiting through groove (201) and is rotatably disposed in the limiting cylinder (3) and the movable groove (101).

2. A theft-proof manhole cover according to claim 1, wherein: The limiting assembly (4) includes a mounting column (401) rotatably disposed inside the limiting cylinder (3) and passing through the limiting through groove (201), an elastic element (402) coaxially sleeved on the mounting column (401), a limiting rod (403) fixedly installed at the bottom end of the mounting column (401), and a bearing (404) coaxially sleeved on the mounting column (401). One end of the elastic element (402) is fixedly installed on the bearing (404), and the other end of the elastic element (402) is fixedly installed on the limiting cylinder (3). The end of the mounting column (401) away from the well seat (1) is detachably connected to a handle (5) for driving the mounting column (401) to rotate.

3. A theft-resistant manhole cover as defined in claim 2, wherein: The cover (2) has an installation groove (202) that communicates with the limiting through groove (201) for placing the limiting rod (403).

4. A theft-resistant manhole cover as defined in claim 3, wherein: The movable groove (101), notch (102), limiting groove (103), limiting rod (403) and mounting groove (202) are all in two sets, and are symmetrically arranged along the vertical center plane of the cover (2).

5. A theft-proof manhole cover according to claim 2, wherein: The cover (2) has an anti-theft groove (203) on the side away from the well seat (1) for hiding the installation column (401). A placement groove (204) is opened on one side wall of the anti-theft groove (203), and a locking groove (205) is opened on the other side wall of the anti-theft groove (203). An anti-theft plate (6) is slidably installed in the placement groove (204). A locking element (7) is provided on the anti-theft plate (6) for locking the anti-theft plate (6) in the locking groove (205). A through hole (8) communicating with the locking groove (205) is opened on the cover (2).

6. A theft-proof manhole cover according to claim 1, wherein: The vertical cross-section of the well base (1) is stepped, and the cover (2) is provided with an anti-theft ring (9) that abuts against the well base (1).

Images