A new anti-theft well lid
By designing the manhole cover base and anti-theft mechanism, and employing a complex mechanical structure composed of anti-theft blocks, telescopic springs, and locking components, the problem of insufficient anti-theft performance of existing manhole covers is solved, achieving a higher anti-theft effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WEIFANG TUANGONGER MASCH CO LTD
- Filing Date
- 2025-04-18
- Publication Date
- 2026-06-26
Smart Images
Figure CN224412622U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of anti-theft manhole cover technology, and in particular to a new type of anti-theft manhole cover. Background Technology
[0002] Currently, manhole covers on urban roads pose significant safety hazards in terms of both operational and traffic safety. When workers are working on them, many manhole covers can only be rotated about 90 degrees, making them unstable and prone to falling back on, which can easily cause accidents and injure people. Because the manhole covers are made of cast iron, their anti-theft performance is also poor, and they are frequently stolen, especially at night. Without any conspicuous warning signs, pedestrians or vehicles may inadvertently fall into them.
[0003] To address the aforementioned issues, existing patent (CN205742278U) discloses a novel secure and anti-theft manhole cover, comprising a manhole cover base and a manhole cover body. A retractable rod is installed on the inner wall of the manhole cover base, connecting to the manhole cover body. A warning device coated with a fluorescent layer is connected to the inner wall of the manhole cover via a spring, automatically springing up and standing upright when there is no upper pressure. Rubber pads are provided at the contact points between the manhole cover base and the manhole cover body, serving to buffer protection and prevent noise. The manhole cover body is equipped with a semi-circular protective cover and a semi-circular opening. A lock cylinder is located within the semi-circular opening, connected to an L-shaped locking bar. The locking bar can enter a corresponding groove on the inner wall of the manhole cover base, preventing the manhole cover from being stolen.
[0004] However, among the existing technologies mentioned above, the anti-theft method of L-shaped lock bars is relatively simple. With the diversification of theft methods, it is difficult to effectively resist the damage of professional theft tools, and the anti-theft performance needs to be further improved. Utility Model Content
[0005] The purpose of this utility model is to provide a new type of anti-theft manhole cover, which solves the technical problem that the anti-theft method of the L-shaped lock bar in the prior art is relatively simple, and with the diversification of theft methods, it is difficult to effectively resist the damage of professional theft tools, and the anti-theft performance needs to be further improved.
[0006] To achieve the above objectives, this utility model employs a novel anti-theft manhole cover, comprising a manhole cover base and an anti-theft mechanism. The anti-theft mechanism includes a connecting seat, a manhole cover body, and a protective component. The connecting seat is rotatably connected to the manhole cover base and located above the manhole cover base. The manhole cover body is detachably connected to the manhole cover base and located above the connecting seat. The protective component includes a fixed frame, a fixed block, a movable rod, an anti-theft block, a telescopic spring, a top block, and a locking component. The fixed frame is fixedly connected to the manhole cover base and located within the manhole cover base. The fixed block is fixedly connected to the fixed frame and located within the fixed frame. The movable rod is slidably connected to the fixed block and passes through the fixed block. The anti-theft block is fixedly connected to the movable rod and located outside the movable rod. The telescopic spring is disposed between the fixed block and the anti-theft block. The top block is detachably connected to the anti-theft block and located below the manhole cover body. The locking component is fixedly connected to the manhole cover base and located on the side of the top block away from the anti-theft block.
[0007] The locking component includes a base plate, a snap-fit block, and a limiting block. The base plate is fixedly connected to the manhole cover base and is located outside the fixed frame. The snap-fit block is fixedly connected to the base plate and is located above the base plate. The limiting block is fixedly connected to the snap-fit block and is located outside the snap-fit block.
[0008] The locking component further includes a connecting sleeve and a rotating block. The connecting sleeve is fixedly connected to the main body of the manhole cover and is located on the side of the top block away from the anti-theft block. The rotating block is rotatably connected to the connecting sleeve and is located inside the connecting sleeve.
[0009] The locking component further includes an adjusting block, which is fixedly connected to the rotating block and located on the outside of the connecting sleeve, and the adjusting block passes through the connecting sleeve.
[0010] The protective component further includes a hinge and a water channel. The hinge is rotatably connected to the manhole cover body and is located above the manhole cover body. The water channel is disposed on the surface of the manhole cover body.
[0011] This utility model discloses a novel anti-theft manhole cover. In practical use, the manhole cover body rotates via the connecting seat, causing it to rotate above the manhole cover base to open and close. When the manhole cover body closes, the top block pushes the anti-theft block, which in turn compresses the telescopic spring. After the manhole cover body is fully closed, the telescopic spring resets and pushes the anti-theft block to engage with the top block, thus providing primary protection for the manhole cover body. The locking device then locks the manhole cover base to the manhole cover body, providing secondary protection. This method effectively solves the problem that the anti-theft method of L-shaped lock bars is relatively simple and cannot effectively resist damage from professional theft tools. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a structural schematic diagram of a novel anti-theft manhole cover according to this utility model.
[0014] Figure 2 This is a structural cross-sectional view of a novel anti-theft manhole cover according to this utility model.
[0015] Figure 3 This is the utility model Figure 2 Enlarged view of the local structure at point A.
[0016] Figure 4 This is an exploded view of the anti-theft mechanism of this utility model.
[0017] Figure 5 This is a partial exploded view of the anti-theft mechanism of this utility model.
[0018] 101-Manhole cover base, 102-Connecting seat, 103-Manhole cover body, 104-Fixed frame, 105-Fixed block, 106-Moving rod, 107-Anti-theft block, 108-Telescopic spring, 109-Top block, 110-Bottom plate, 111-Snap-fit block, 112-Restriction block, 113-Connecting sleeve, 114-Rotating block, 115-Adjusting block, 116-Hinge, 117-Water inlet trough. Detailed Implementation
[0019] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.
[0020] Please see Figures 1-5 ,in Figure 1 This is a structural schematic diagram of a novel anti-theft manhole cover according to this utility model. Figure 2 This is a structural cross-sectional view of a novel anti-theft manhole cover according to this utility model. Figure 3 This is the utility model Figure 2 Enlarged view of the local structure at point A. Figure 4 This is an exploded view of the anti-theft mechanism of this utility model. Figure 5 This is a partial exploded view of the anti-theft mechanism of this utility model.
[0021] This utility model provides a novel anti-theft manhole cover, including a manhole cover base 101 and an anti-theft mechanism. The anti-theft mechanism includes a connecting seat 102, a manhole cover body 103, and protective components. The protective components include a fixed frame 104, a fixed block 105, a movable rod 106, an anti-theft block 107, a telescopic spring 108, a top block 109, a locking component, a hinge 116, and a water channel 117. The locking component includes a base plate 110, a snap-fit block 111, a limiting block 112, a connecting sleeve 113, a rotating block 114, and an adjusting block 115. The aforementioned solution solves the problem that the anti-theft method of L-shaped lock bars is relatively simple, and with the diversification of theft methods, it is difficult to effectively resist the damage of professional theft tools, and the anti-theft performance needs to be further improved.
[0022] In this specific embodiment, the connecting seat 102 is rotatably connected to the manhole cover base 101 and is located above the manhole cover base 101. The manhole cover body 103 is detachably connected to the manhole cover base 101 and is located above the connecting seat 102. The protective assembly includes a fixing frame 104, a fixing block 105, a movable rod 106, an anti-theft block 107, a telescopic spring 108, a top block 109, and a locking component. The fixing frame 104 is fixedly connected to the manhole cover base 101 and is located inside the manhole cover base 101. The fixing block 105 is fixedly connected to the fixing frame 104 and is located within the fixing frame 101. Within 4, the movable rod 106 is slidably connected to the fixed block 105 and passes through the fixed block 105. The anti-theft block 107 is fixedly connected to the movable rod 106 and is located outside the movable rod 106. The telescopic spring 108 is disposed between the fixed block 105 and the anti-theft block 107. The top block 109 is detachably connected to the anti-theft block 107 and is located below the manhole cover body 103. The locking member is fixedly connected to the manhole cover base 101 and is located on the side of the top block 109 away from the anti-theft block 107. The manhole cover body 103 rotates through the connecting seat 102, causing the manhole cover body to... The body 103 rotates above the manhole cover base 101 to open and close. The anti-theft block 107 has an inclined surface. When the manhole cover body 103 is closed, the top block 109 pushes the anti-theft block 107 through the inclined surface. The anti-theft block 107 pushes the telescopic spring 108 to compress. After the manhole cover body 103 is fully closed, the telescopic spring 108 returns to its original position and pushes the anti-theft block 107 to engage with the top block 109, thus providing primary protection for the manhole cover body 103. Then, the locking device locks the manhole cover base 101 and the manhole cover body 103 together, providing secondary protection for the manhole cover body 103. When the manhole cover needs to be... When opening, the movable rod 106 is provided with a through groove, and the manhole cover body 103 is provided with multiple through grooves. A special tool is inserted into the through groove of the movable rod 106 through the through groove of the manhole cover body 103. The movable rod 106 is pulled outward by the special tool, and the movable rod 106 slides on the outside of the fixed block 105. The movable rod 106 drives the anti-theft block 107 to release its resistance to the top block 109, thereby opening the locking member and opening the manhole cover body 103. This method can effectively solve the problem that the anti-theft method of L-shaped lock bars is relatively simple and difficult to effectively resist damage by professional theft tools.
[0023] The locking component includes a base plate 110, a snap-fit block 111, and a limiting block 112. The base plate 110 is fixedly connected to the manhole cover base 101 and is located outside the fixing frame 104. The snap-fit block 111 is fixedly connected to the base plate 110 and is located above the base plate 110. The limiting block 112 is fixedly connected to the snap-fit block 111 and is located outside the snap-fit block 111. The snap-fit block 111 is disposed above the base plate 110 and has multiple toothed surfaces. The limiting block 112 is disposed outside the snap-fit block 111.
[0024] Secondly, the locking component also includes a connecting sleeve 113 and a rotating block 114. The connecting sleeve 113 is fixedly connected to the manhole cover body 103 and is located on the side of the top block 109 away from the anti-theft block 107. The rotating block 114 is rotatably connected to the connecting sleeve 113 and is located inside the connecting sleeve 113. The rotating block 114 is disposed inside the connecting sleeve 113 and has a cross groove. The manhole cover body 103 is provided with a circular groove that matches the rotating block 114.
[0025] Meanwhile, the locking component also includes an adjusting block 115, which is fixedly connected to the rotating block 114 and located outside the connecting sleeve 113. The adjusting block 115 penetrates the connecting sleeve 113 and has a toothed surface that matches the snap-fit block 111. When the manhole cover body 103 is completely fitted above the manhole cover base 101, a special tool is inserted into the cross groove of the rotating block 114. The rotating block 114 drives the adjusting block 115 to rotate, so that the adjusting block 115 snaps into the snap-fit block 111. The limiting block 112 limits the travel of the adjusting block 115, thereby locking the manhole cover body 103 and the manhole cover base 101.
[0026] In addition, the protective assembly also includes a hinge 116 and a water channel 117. The hinge 116 is rotatably connected to the manhole cover body 103 and is located above the manhole cover body 103. The water channel 117 is disposed on the surface of the manhole cover body 103. The hinge 116 is used to pull the manhole cover body 103 when it is opened, and the water channel 117 facilitates the drainage of water accumulated on the surface of the manhole cover body 103.
[0027] Using a novel anti-theft manhole cover according to this embodiment, by setting the connecting seat 102, the manhole cover body 103, and the protective component, in specific use, the manhole cover body 103 covers the manhole cover base 101 via the connecting seat 102. The top block 109 pushes the anti-theft block 107 through its inclined surface. The anti-theft block 107 pushes the telescopic spring 108 to compress. After the manhole cover body 103 is completely closed, the telescopic spring 108 resets and pushes the anti-theft block 107 to engage with the top block 109, forming a strong locking structure, increasing the difficulty of manhole cover theft, and achieving protection against theft. The primary protection of the manhole cover body 103 is achieved by inserting a special tool into the cross groove of the rotating block 114. The rotating block 114 drives the adjusting block 115 to rotate, causing the adjusting block 115 to engage with the locking block 111. The limiting block 112 restricts the travel of the adjusting block 115, thereby locking the manhole cover body 103 to the manhole cover base 101, thus achieving secondary protection for the manhole cover body 103. When the manhole cover is closed, the anti-theft block 107 engages inside the manhole cover, forming a solid mechanical locking structure, effectively increasing the difficulty of the manhole cover being stolen, thereby improving the anti-theft performance of the manhole cover.
[0028] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.
Claims
1. A novel anti-theft manhole cover, comprising a manhole cover base, characterized in that, It also includes anti-theft systems; The anti-theft mechanism includes a connecting seat, a manhole cover body, and a protective component. The connecting seat is rotatably connected to the manhole cover base and is located above the manhole cover base. The manhole cover body is detachably connected to the manhole cover base and is located above the connecting seat. The protective component includes a fixed frame, a fixed block, a movable rod, an anti-theft block, a telescopic spring, a top block, and a locking component. The fixed frame is fixedly connected to the manhole cover base and is located inside the manhole cover base. The fixed block is fixedly connected to the fixed frame and is located inside the fixed frame. The movable rod is slidably connected to the fixed block and passes through the fixed block. The anti-theft block is fixedly connected to the movable rod and is located outside the movable rod. The telescopic spring is disposed between the fixed block and the anti-theft block. The top block is detachably connected to the anti-theft block and is located below the manhole cover body. The locking component is fixedly connected to the manhole cover base and is located on the side of the top block away from the anti-theft block.
2. The novel anti-theft manhole cover as described in claim 1, characterized in that, The locking component includes a base plate, a snap-fit block, and a limiting block. The base plate is fixedly connected to the manhole cover base and is located outside the fixed frame. The snap-fit block is fixedly connected to the base plate and is located above the base plate. The limiting block is fixedly connected to the snap-fit block and is located outside the snap-fit block.
3. The novel anti-theft manhole cover as described in claim 2, characterized in that, The locking component also includes a connecting sleeve and a rotating block. The connecting sleeve is fixedly connected to the main body of the manhole cover and is located on the side of the top block away from the anti-theft block. The rotating block is rotatably connected to the connecting sleeve and is located inside the connecting sleeve.
4. The novel anti-theft manhole cover as described in claim 3, characterized in that, The locking component also includes an adjusting block, which is fixedly connected to the rotating block and located on the outside of the connecting sleeve, and the adjusting block passes through the connecting sleeve.
5. The novel anti-theft manhole cover as described in claim 4, characterized in that, The protective assembly also includes a hinge and a water channel. The hinge is rotatably connected to the manhole cover body and is located above the manhole cover body. The water channel is disposed on the surface of the manhole cover body.