Municipal well lid not prone to being lost

Abstract

The utility model provides a municipal well lid not prone to being lost, and relates to the technical field of well lids. The municipal well lid not prone to being lost comprises a well lid body, a well lid base and an annular magnet, a containing groove used for containing the well lid body is formed in the top of the well lid base, an annular clamping groove is formed in the inner wall of the containing groove, a side sliding groove is formed in the outer surface of the well lid body, and a sliding insertion rod is slidably connected into the side sliding groove. A well lid body is mounted in a placement groove through an annular clamping groove and a sliding insertion rod, an annular magnet is placed at the top of the well lid body, and an iron block is attracted through the annular magnet to drive the telescopic end of a winding mechanism to slide and rise; and one end of each sliding insertion rod is pulled out from the interior of the corresponding annular clamping groove under the action of the driving mechanism, limitation on the well lid body is relieved, the locking state of the well lid is relieved, opening of the well lid body is controlled through a specific annular magnet, and the well lid can be prevented from being lost.

Description

Technical Field

[0001] This utility model relates to a manhole cover, specifically a municipal manhole cover that is not easily lost, and belongs to the field of manhole cover technology. Background Technology

[0002] With the rapid development of my country's national economy, underground engineering construction has expanded significantly, especially in areas directly related to people's lives such as water supply, power supply, heating, gas, sewage, cables, petroleum, liquefied petroleum, and chemical industries. Consequently, the number of manholes and manhole covers has also increased. Manhole covers are used to cover deep wells in roads or homes to prevent people or objects from falling in. They can be classified by material, such as metal manhole covers, high-strength fiber cement concrete manhole covers, and resin manhole covers, and are generally round or square.

[0003] Chinese Patent Publication No. CN2227678Y discloses an anti-theft manhole cover for underground public facility well openings. This utility model consists of a manhole cover base and a manhole cover. A locking hole is drilled in the manhole cover, and a bushing is embedded in the locking hole. A locking shaft is installed inside the bushing. The upper end of the locking shaft has a triangular claw, and the lower end of the locking shaft passes through the bottom surface of the manhole cover and is fitted with an A-frame. A movable locking rod is connected to the top of the A-frame, and the locking rod is supported by a retaining bracket. This utility model has a simple structure, is easy to manufacture, and is convenient to install and remove. The manhole cover can be fixed at any point on the manhole base at 360 degrees, thus solving the problem of manhole cover loss and preventing accidents.

[0004] However, the inventor of the above-mentioned device believes that it has certain defects. The above-mentioned manhole cover uses a lock to prevent theft, which is generally not very effective. Moreover, the lock is exposed on the manhole cover and is prone to rust, which affects the normal opening of the manhole cover. Therefore, this utility model provides a municipal manhole cover that is not easy to be lost. Utility Model Content

[0005] The purpose of this utility model is to provide a municipal manhole cover that is not easily lost in order to solve the above-mentioned problems. This addresses the issues of existing technologies that use locks for theft prevention, which have limited effectiveness and the locks being exposed on the manhole cover, making them prone to rust and affecting the normal opening of the manhole cover.

[0006] This utility model is achieved through the following technical solution: a municipal manhole cover that is not easily lost, comprising a manhole cover body, a manhole cover base, and an annular magnet. The top of the manhole cover base is provided with a placement groove for placing the manhole cover body. The inner wall of the placement groove is provided with an annular slot. The outer surface of the manhole cover body is provided with a side sliding groove. A sliding rod is slidably connected inside the side sliding groove. One end of the sliding rod is inserted into the inside of the annular slot. An adjustment cavity is provided at the center of the manhole cover body. The adjustment cavity is provided with a winding mechanism for pulling the sliding rod to slide. The top of the winding mechanism is telescopic and is equipped with an iron block. The top of the manhole cover body is provided with a drive mechanism for driving the winding mechanism to rotate.

[0007] Preferably, one end of the sliding rod is arc-shaped, and the other end of the sliding rod is fixedly connected to a first spring. When the manhole cover seat is placed in the placement groove, the top of the manhole cover seat presses the arc-shaped end of the sliding rod, and the first spring is used to drive the sliding rod to slide and retract. Then, the first spring drives the sliding rod to slide and return to its original position.

[0008] Preferably, the winding mechanism includes a rotating cylinder that rotates on the bottom wall of the adjustment cavity. A pull rope is fixedly connected to the outer surface of the rotating cylinder. One end of the pull rope extends into the interior of the side sliding groove. The other end of the sliding rod is fixedly connected to the pull rope. The pull rope is wound up by driving the rotating cylinder to rotate. Under the connecting action of the pull rope, one end of the sliding rod is pulled out from the interior of the annular groove.

[0009] Preferably, the winding mechanism further includes a rectangular slider that slides on the top of the rotating drum. A movable plate is fixedly connected to the top of the rectangular slider, and the iron block is embedded at both ends of the movable plate. A second spring is fixedly connected to the bottom of the rectangular slider, and the other end of the second spring is fixedly connected to the inner bottom wall of the rotating drum. An annular magnet is placed at the center of the top of the manhole cover body, and the iron block is attracted by the annular magnet, which pulls the rectangular slider to slide and rise at one end of the rotating drum, thereby driving the movable plate to slide and rise.

[0010] Preferably, the driving mechanism includes a driving rod that rotates on the top wall of the adjustment cavity. A driving plate is fixedly connected to the bottom of the driving rod, and push plates are fixedly connected to both ends of the bottom of the driving plate. When the movable plate rises between the two push plates, the driving rod rotates to drive the movable plate to rotate.

[0011] Preferably, the drive mechanism further includes a rotating knob fixed to the top of the drive rod. A through groove is provided on the top of the manhole cover body, and the rotating knob is located inside the through groove. The rotating knob facilitates the rotation of the drive rod.

[0012] Preferably, a fixing block is fixedly connected to the bottom of the manhole cover seat, and a filter screen is installed at the bottom of the manhole cover seat. The filter screen is connected to the fixing block by bolts, and the filter screen is used to filter the sewage flowing into the manhole cover seat.

[0013] This utility model provides a municipal manhole cover that is not easily lost, and its beneficial effects are as follows:

[0014] The device uses an annular slot and a sliding rod to install the manhole cover body inside the placement slot. An annular magnet is placed on top of the manhole cover body, and the annular magnet attracts the iron block, causing the telescopic end of the winding mechanism to slide upward. Under the action of the drive mechanism, one end of the sliding rod is pulled out from inside the annular slot, releasing the restriction on the manhole cover body and releasing the locked state of the manhole cover. The use of a specific annular magnet to control the opening of the manhole cover body can prevent the manhole cover from being lost.

[0015] The device removes the annular magnet from the top of the manhole cover body, and under the action of the second spring, drives the rectangular slider to slide down, causing the movable plate to disengage from the two push plates. Then, the rebound of the first spring drives the sliding rod to slide back quickly, so that the sliding rod can be inserted into the annular slot to fix the manhole cover body. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present utility model;

[0017] Figure 2 This is a perspective view of the manhole cover seat of this utility model;

[0018] Figure 3 This is a schematic diagram of the manhole cover body structure of this utility model;

[0019] Figure 4 An installation perspective view of the drive mechanism and winding mechanism of this utility model;

[0020] Figure 5 This is a perspective view of the bottom of the manhole cover seat of this utility model.

[0021] [Explanation of Key Component Symbols]

[0022] 1. Manhole cover body; 11. Side sliding groove; 12. Adjustment chamber; 2. Manhole cover seat; 21. Placement groove; 22. Annular slot; 23. Filter screen; 24. Fixing block; 3. Annular magnet; 4. Sliding rod; 5. Rotating cylinder; 51. Rectangular slider; 52. Movable plate; 53. Iron block; 6. Drive rod; 61. Drive plate; 62. Push plate; 63. Rotating knob; 7. Pull rope. Detailed Implementation

[0023] This utility model provides a municipal manhole cover that is not easily lost.

[0024] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4The manhole cover includes a manhole cover body 1, a manhole cover seat 2, and a ring magnet 3. The top of the manhole cover seat 2 is provided with a placement groove 21 for placing the manhole cover body 1. A fixing block 24 is fixedly connected to the bottom of the manhole cover seat 2. A filter screen 23 is installed at the bottom of the manhole cover seat 2. The filter screen 23 is connected to the fixing block 24 by bolts. The manhole cover body 1 is placed inside the manhole cover seat 2 by the placement groove 21. The manhole cover body 1 is opened and the sewage flowing into the manhole cover body 1 is filtered by the filter screen 23. The filter screen 23 can be easily removed by removing the bolts on the fixing block 24. The top of the manhole cover body 1 is rotatably connected with a handle.

[0025] Please refer to it again. Figure 1 , Figure 2 and Figure 3 The inner wall of the placement groove 21 is provided with an annular groove 22, and the outer surface of the manhole cover body 1 is provided with a side sliding groove 11. A sliding rod 4 is slidably connected inside the side sliding groove 11. One end of the sliding rod 4 is inserted into the annular groove 22. One end of the sliding rod 4 is arc-shaped, and the other end of the sliding rod 4 is fixedly connected to a first spring. When the manhole cover body 1 is placed into the placement groove 21, the top of the manhole cover seat 2 presses the arc end of the sliding rod 4 to make the sliding rod 4 slide into the side sliding groove 11. When the manhole cover body 1 is placed into the placement groove 21, the rebound of the first spring drives the sliding rod 4 to quickly slide back and insert into the annular groove 22 to restrict the removal of the manhole cover body 1.

[0026] Please refer to it again. Figure 1 , Figure 3 and Figure 4 An adjustment cavity 12 is provided at the center of the manhole cover body 1. Inside the adjustment cavity 12 is a winding mechanism that pulls the sliding rod 4 to slide. The winding mechanism includes a rotating cylinder 5 that rotates on the bottom wall of the adjustment cavity 12. A pull rope 7 is fixedly connected to the outer surface of the rotating cylinder 5. One end of the pull rope 7 extends into the inside of the side sliding groove 11. The other end of the sliding rod 4 is fixedly connected to the pull rope 7. By driving the rotating cylinder 5 to rotate, the sliding rod 4 is pulled out from the inside of the annular groove 22 by the connecting action of the pull rope 7.

[0027] Please refer to it again. Figure 1 , Figure 3 and Figure 4The top of the winding mechanism is telescopic and equipped with an iron block 53. The winding mechanism also includes a rectangular slider 51 that slides on the top of the rotating cylinder 5. A movable plate 52 is fixedly connected to the top of the rectangular slider 51. The iron blocks 53 are embedded at both ends of the movable plate 52. A second spring is fixedly connected to the bottom of the rectangular slider 51. The other end of the second spring is fixedly connected to the inner bottom wall of the rotating cylinder 5. The distance between the two iron blocks 53 is controlled between the inner diameter and the outer diameter of the annular magnet 3. When the annular magnet 3 is placed at the center of the top of the manhole cover body 1, the iron block 53 is attracted by the annular magnet 3, which drives the movable plate 52 to rise. When the annular magnet 3 is removed, the movable plate 52 slides down by the rebound of the second spring. A strong magnetic annular magnet 3, such as a neodymium magnet, is used to drive the movable plate 52 to rotate as a whole by driving the annular magnet 3 to rotate.

[0028] Please refer to it again. Figure 1 , Figure 3 and Figure 4 The top of the manhole cover body 1 is provided with a drive mechanism for driving the winding mechanism to rotate. The drive mechanism includes a drive rod 6 that rotates on the top wall of the adjustment cavity 12. The bottom of the drive rod 6 is fixedly connected to a drive plate 61. Both ends of the bottom of the drive plate 61 are fixedly connected to push plates 62. When the movable plate 52 slides up between the two push plates 62, the drive rod 6 is driven to rotate. The push plates 62 drive the movable plate 52 to rotate together, thereby driving the winding mechanism to wind up. The drive mechanism also includes a rotating knob 63 fixed on the top of the drive rod 6. The top of the manhole cover body 1 is provided with a through groove. The rotating knob 63 and the through groove facilitate the driving of the drive rod 6 to rotate. When the annular magnet 3 is not placed on the top of the manhole cover body 1, the drive knob 63 will only drive the drive plate 61 to rotate freely.

[0029] Working principle: Fix the manhole cover seat 2 in a suitable position, place the manhole cover body 1 inside the placement groove 21, and push the sliding rod 4 into the side sliding groove 11 by pressing the arc end of the sliding rod 4 through the top of the manhole cover seat 2. Then, the return of the first spring causes one end of the sliding rod 4 to be inserted into the annular groove 22 to restrict the removal of the manhole cover body 1. By placing the annular magnet 3 at the center of the manhole cover body 1, the annular magnet 3 attracts the iron block 53 and pulls the movable plate 52 to slide upward, so that the movable plate 52 rises between the two push plates 62. By driving the rotating knob 63 to rotate inside the through groove, the push plate 62 pushes the movable plate 52 to rotate, causing the rotating cylinder 5 to rotate inside the adjustment cavity 12. By pulling the rope 7, the sliding rod 4 is pulled into the side sliding groove 11, so that one end of the sliding rod 4 is pulled out from the annular groove 22, releasing the restriction on the manhole cover body 1 and making it easy to remove the manhole cover body 1 from the inside of the manhole cover seat 2.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A municipal manhole cover that is not easily lost, comprising a manhole cover body (1), a manhole cover base (2), and a ring magnet (3), characterized in that: The top of the manhole cover seat (2) is provided with a placement groove (21) for placing the manhole cover body (1). The inner wall of the placement groove (21) is provided with an annular groove (22). The outer surface of the manhole cover body (1) is provided with a side sliding groove (11). A sliding rod (4) is slidably connected inside the side sliding groove (11). One end of the sliding rod (4) is inserted into the inside of the annular groove (22). An adjustment cavity (12) is provided at the center of the manhole cover body (1). Inside the adjustment cavity (12) is a winding mechanism that pulls the sliding rod (4) to slide. The top of the winding mechanism is telescopic and is equipped with an iron block (53). The top of the manhole cover body (1) is provided with a driving mechanism that drives the winding mechanism to rotate.

2. A municipal manhole cover that is not easily lost according to claim 1, characterized in that: One end of the sliding rod (4) is arc-shaped, and the other end of the sliding rod (4) is fixedly connected to a first spring.

3. A municipal manhole cover that is not easily lost according to claim 1, characterized in that: The winding mechanism includes a rotating cylinder (5) that rotates on the bottom wall of the adjustment cavity (12). A pull rope (7) is fixedly connected to the outer surface of the rotating cylinder (5). One end of the pull rope (7) extends into the interior of the side slide groove (11), and the other end of the sliding rod (4) is fixedly connected to the pull rope (7).

4. A municipal manhole cover that is not easily lost according to claim 3, characterized in that: The winding mechanism also includes a rectangular slider (51) that slides on the top of the rotating cylinder (5). A movable plate (52) is fixedly connected to the top of the rectangular slider (51). The iron block (53) is embedded in both ends of the movable plate (52). A second spring is fixedly connected to the bottom of the rectangular slider (51). The other end of the second spring is fixedly connected to the inner bottom wall of the rotating cylinder (5).

5. A municipal manhole cover that is not easily lost according to claim 1, characterized in that: The driving mechanism includes a driving rod (6) that rotates on the top wall of the adjustment cavity (12). A driving plate (61) is fixedly connected to the bottom of the driving rod (6), and push plates (62) are fixedly connected to both ends of the bottom of the driving plate (61).

6. A municipal manhole cover that is not easily lost according to claim 5, characterized in that: The drive mechanism also includes a rotating knob (63) fixed to the top of the drive lever (6). The top of the manhole cover body (1) is provided with a through groove, and the rotating knob (63) is located inside the through groove.

7. A municipal manhole cover that is not easily lost according to claim 1, characterized in that: The bottom of the manhole cover seat (2) is fixedly connected to a fixing block (24), and a filter screen (23) is installed at the bottom of the manhole cover seat (2). The filter screen (23) and the fixing block (24) are connected by bolts.

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