Rainwater well cover theft-proof device

Abstract

The utility model relates to municipal facilities technical field, specifically disclose a rainwater well lid anti -theft device, including well lid and base, is provided with the hinged part between well lid and base, is installed with the anti -theft subassembly below well lid, the anti -theft subassembly is installed with the turntable through the axle seat, and two eccentric holes are opened in eccentric position symmetry, and the push -and -pull rod adopts L type round steel, and one end is inserted into eccentric hole, is fixed through split pin, and the other end is hinged with lock bar, and the guide seat adopts the rectangular frame welded into with steel sheet, is fixed in the lower side of well lid, and the lock bar passes through the rectangular hole of guide seat, can along the horizontal direction sliding insertion lock hole of base realizes the locking of well lid. The utility model discloses through the symmetrical locking structure of double lock bars, cooperates hidden transmission design, can effectively prevent illegal prying or violent opening, significantly reduces the risk of well lid theft, need not complex tool, and locking and unlocking can be completed through simple lifting or releasing action, reduces the operation difficulty.

Description

Technical Field

[0001] This utility model relates to the field of municipal facilities technology, specifically to an anti-theft device for rainwater well covers. Background Technology

[0002] In municipal drainage systems, storm drain covers are a crucial component, primarily serving to cover the manhole openings and prevent pedestrians and vehicles from falling in. However, because manhole covers are mostly made of cast iron or other metals, which have some recycling value, they are frequently stolen. Traditional manhole covers are often secured by gravity or simple locks, making them easily pried open and stolen, resulting not only in the loss of municipal assets but also in creating safety hazards. Therefore, there is an urgent need for a reliable, highly effective, and easy-to-use anti-theft device for manhole covers. Utility Model Content

[0003] In response to the problem of manhole cover theft, the purpose of this utility model is to provide a rainwater manhole cover anti-theft device, which achieves reliable locking between the manhole cover and the base through a mechanical linkage structure to prevent the manhole cover from being stolen, and also has an emergency unlocking function to meet the needs of rainstorm drainage.

[0004] The solution adopted by this utility model to solve its technical problem is as follows: a rainwater well cover anti-theft device, including a well cover and a base, with a hinged part between the well cover and the base, allowing the well cover to be flipped open around the hinged part. A lifting hole is provided on the well cover opposite the hinged part, through which the well cover can be pulled up and flipped. An anti-theft component is installed below the well cover, the anti-theft component including a shaft seat fixed to the lower side of the well cover, a turntable mounted on the shaft seat, the turntable rotating around the shaft seat, a push-pull rod located at an eccentric position on the turntable, the outer end of the push-pull rod hinged to a locking rod, a guide seat fixed to the lower side of the well cover, the locking rod passing laterally through the guide seat, and the rotation of the turntable causing the push-pull rod at the eccentric position to rotate. The push-pull rod drives the locking rod to slide laterally in the guide seat; a locking hole is provided on the base sidewall corresponding to the outer end of the locking rod. When the turntable rotates and pushes the locking rod outward, the locking rod can be inserted into the locking hole. When the turntable rotates and pulls back the locking rod, the locking rod can be pulled out of the locking hole. The turntable is also provided with a drive rod, and a protruding shaft is provided at the eccentric position of the turntable. A shaft hole is provided in the middle of the drive rod, and the drive rod is rotatably mounted on the protruding shaft through the shaft hole. A pull ring is provided at the upper end of the drive rod, and a counterweight ball is provided at the lower end of the drive rod. The lifting hole on the manhole cover extends downward to a limit tube, and the upper end of the drive rod is located in the limit tube. A limit block is also provided on the turntable to limit the rotation direction and rotation angle of the turntable.

[0005] Furthermore, a set of symmetrical push-pull rods and locking rods are provided at the eccentric position of the turntable. The push-pull rods and locking rods are symmetrical about the turntable, and symmetrical lock holes are provided on the base.

[0006] Furthermore, the push-pull rod is an L-shaped rod with an eccentric hole on the turntable. One end of the L-shaped rod is inserted into the eccentric hole, and the other end is hinged to the locking rod. The end of the L-shaped rod inserted into the eccentric hole has a pin hole with a cotter pin inserted into it, thereby installing the push-pull rod on the turntable.

[0007] Furthermore, the bearing seat is composed of two symmetrical right-angle plates. The horizontal section of the right-angle plate is fixed on the lower side of the manhole cover, and the lower end of the vertical section of the right-angle plate is provided with a shaft hole. A transverse shaft is provided at the center of the turntable, and the shafts on both sides of the turntable are respectively inserted into the corresponding shaft holes.

[0008] Furthermore, the drive rod includes a shaft, a pull ring, and a counterweight ball. The shaft has a shaft hole, a pull ring at the upper end of the shaft, and a counterweight ball fixed at the lower end of the shaft. The shaft is fitted onto an L-shaped rod that is inserted into the eccentric hole of the turntable through the shaft hole.

[0009] Furthermore, the counterweight ball is a hollow metal ball, which is welded to the lower end of the drive rod.

[0010] The beneficial effects of this utility model are as follows: 1. Excellent anti-theft performance: Through the double locking rod symmetrical locking structure, combined with the hidden transmission design, it can effectively prevent illegal prying or violent opening, and significantly reduce the risk of manhole cover theft.

[0011] 2. Easy to operate: No complicated tools are required. Locking and unlocking can be completed with simple lifting or releasing actions, reducing the difficulty of operation.

[0012] 3. Rapid emergency response: Utilizing a buoyancy-based automatic unlocking mechanism, the locks can be automatically opened during heavy rain and flooding, facilitating rapid drainage operations and improving municipal emergency response efficiency.

[0013] 4. Stable and reliable structure: The components are connected by bushings, hinges and other means, and the limiting device ensures the stability of the movement trajectory. The metal material and welding process improve the weather resistance and service life of the device, making it suitable for complex outdoor environments. Attached Figure Description

[0014] Figure 1 This is a 3D structural diagram of a storm drain cover;

[0015] Figure 2 This is a schematic diagram of the structure for installing anti-theft components under the rainwater well cover;

[0016] Figure 3 This is a 3D structural diagram of the anti-theft component;

[0017] Figure 4 This is a front view structural diagram of the anti-theft component;

[0018] Figure 5 This is a diagram illustrating the locked and unlocked states of the anti-theft components.

[0019] The following components are labeled in the diagram: base 1, manhole cover 2, lifting hole 3, hinge part 4, anti-theft component 5, lock hole 101, limit tube 201, shaft seat 501, turntable 502, push-pull rod 503, locking rod 504, guide seat 505, drive rod 506, limit block 507, pull ring 561, rod body 562, counterweight ball 563. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below.

[0021] Example: In order to solve the problem of rainwater well covers being forcibly opened and stolen, this utility model provides an anti-theft device for rainwater well covers.

[0022] Specific examples Figure 1 As shown, a storm drain cover includes a cover 2 and a base 1. The base 1 is buried under the road surface, making it difficult to remove and steal. Therefore, the main focus of storm drain cover theft prevention is preventing the cover 2 from being stolen. A hinge 4 is typically provided between the cover 2 and the base 1 to connect them. The cover 2 can be flipped open around the hinge 4. A lifting hole 3 is provided on the side of the cover 2 opposite the hinge 4, allowing workers to use a pry bar or similar tool to pry the cover 2 open through the lifting hole 3.

[0023] like Figure 2-4 As shown, the anti-theft component 5 provided by this utility model is installed below the manhole cover 2. The anti-theft component 5 includes a shaft seat 501, a turntable 502, a push-pull rod 503, a locking rod 504, a guide seat 505, a drive rod 506, and a limiting structure. The shaft seat 501 is fixed to the lower side of the manhole cover 2, and the turntable 502 can rotate around the shaft seat 501. The shaft seat 501 is composed of two symmetrical right-angle plates. The horizontal section of the right-angle plate is fixed to the lower side of the manhole cover 2. The right-angle plate is usually fixed to the manhole cover 2 by welding. The lower end of the vertical section of the right-angle plate is provided with a shaft hole. The center of the turntable 502 is provided with a horizontal shaft. The shafts on both sides of the turntable 502 are respectively inserted into the corresponding shaft holes.

[0024] A push-pull rod 503 is located at an eccentric position on the turntable 502. A locking rod 504 is hinged to the outer end of the push-pull rod 503. A guide seat 505 is also fixed on the lower side of the manhole cover 2. The locking rod 504 passes laterally through the guide seat 505. When the turntable 502 rotates, it drives the push-pull rod 503 at the eccentric position to rotate, and the push-pull rod 503 drives the locking rod 504 to slide laterally in the guide seat 505. The turntable 502, the push-pull rod 503, and the locking rod 504 are all hinged, thus forming a structure in which the horizontal extension and retraction of the locking rod 504 is driven by the rotation of the turntable 502.

[0025] The turntable 502 is made of a circular steel plate with two symmetrically eccentric holes at its eccentric position. The push-pull rod 503 is made of L-shaped round steel, with one end inserted into the eccentric hole and fixed by a cotter pin, and the other end hinged to the locking rod 504 (made of round steel). The guide seat 505 is made of steel plates welded into a rectangular frame and fixed to the lower side of the manhole cover 2. The locking rod 504 passes through the guide hole of the guide seat 505 and can slide horizontally.

[0026] A locking hole 101 is provided on the side wall of the base 1 corresponding to the outer end of the locking rod 504. When the turntable 502 rotates and pushes the locking rod 504 outward, the locking rod 504 can be inserted into the locking hole 101. When the turntable 502 rotates and pulls back the locking rod 504, the locking rod 504 can be pulled out of the locking hole 101. In order to make the manhole cover 2 more securely and stably locked, two sets of push-pull rods 503 and locking rods 504 are used in a symmetrical structure. The push-pull rods 503 and locking rods 504 are symmetrical about the turntable 502, and symmetrical locking holes 101 are provided on the base 1. When the turntable 502 rotates, it simultaneously pushes the locking rods 504 on both sides to extend or retract outward or inward, thereby achieving symmetrical locking and making the locking of the manhole cover 2 more stable and secure.

[0027] The turntable 502 is also equipped with a drive rod 506, and a protruding shaft is provided at the eccentric position of the turntable 502. The drive rod 506 has a shaft hole in the middle. The drive rod 506 is rotatably mounted on the protruding shaft through the shaft hole. A pull ring 561 is provided at the upper end of the drive rod 506, and a counterweight ball 563 is provided at the lower end of the drive rod 506.

[0028] The drive rod 506 includes a rod body 562, a pull ring 561, and a counterweight hollow ball. The rod body 562 has a shaft hole, the pull ring 561 is located at the upper end of the rod body 562, and the counterweight ball 563 is fixed at the lower end of the rod body 562. The rod body 562 is fitted onto an L-shaped rod inserted into the eccentric hole of the turntable 502 through the shaft hole. The rod body 562 of the drive rod 506 can be machined from round steel, with a shaft hole in the middle, and is fitted onto the protruding shaft of the turntable 502. The upper end of the rod body 562 is welded with a circular pull ring 561, and the lower end is welded with a metal counterweight ball 563 as a counterweight. The weight of the counterweight ball 563 is preferably sufficient to reliably lock the locking rod 504.

[0029] The lifting hole 3 on the manhole cover 2 extends downwards to form a limiting tube 201. The upper end of the drive rod 506 is located within the limiting tube 201, meaning the pull ring 561 of the drive rod 506 is also located within the limiting tube 201. When the manhole cover 2 is locked, the pull ring 561 is located below the manhole cover 2 and will not protrude from the lifting hole 3. When locked, the depth of the lifting hole 3 below the manhole cover 2 should be such that it cannot be reached by hand, preventing unauthorized personnel from pulling down the pull ring 561 and engaging the locked state of the manhole cover 2 without tools.

[0030] The purpose of the limiting tube 201 is to limit the upper end of the drive rod 506, thereby preventing the drive rod 506 from rotating and thus preventing the turntable 502 from rotating, which would affect the unlocking of the manhole cover 2.

[0031] The turntable 502 is also provided with a limiting block 507, which limits the rotation direction and rotation angle of the turntable 502. The limiting block 507 is a metal block welded to the edge of the turntable 502. When the turntable 502 rotates, the metal block can block the side of the bearing seat 501, thereby limiting the rotation angle and direction of the turntable 502. Figure 4 As shown, in the locked state, the counterweight ball 563 pulls the drive rod 506 downward, causing the push rod and locking rod 504 to rotate to the same horizontal line. At this time, the locking rod 504 extends to its maximum distance, and its outer end penetrates into the lock hole 101 of the base 1 to achieve anti-theft locking of the manhole cover 2. In this state, the limit block 507 is fixed outside the shaft seat 501 to prevent the turntable 502 from rotating further and causing the locking rod 504 to be pulled back.

[0032] Furthermore, the counterweight ball 563 is a hollow metal ball, welded to the lower end of the drive rod 506. The hollow metal ball has sufficient weight to pull the turntable 502 to rotate, thus locking the manhole cover 2. Simultaneously, when urban flooding occurs due to heavy rain, storm drains need to be quickly cleared and drained. When a storm drain is clogged, rainwater can cause it to overflow. The hollow metal ball, buoyed by the water, floats upwards, causing the drive rod 506 to move upwards, which in turn drives the turntable 502 to rotate counterclockwise, allowing the locking rod 504 to be pulled out of the locking hole 101, thus unlocking the manhole cover 2. At this point, both workers and non-workers can easily and quickly open the manhole cover 2 for drainage and clearing.

[0033] The specific work process is as follows: Figure 5 As shown, in the locked state: when the manhole cover 2 is engaged, the pull ring 561 of the drive rod 506 is released. Under the action of gravity, the counterweight ball 563 pulls down the drive rod 506, causing the drive rod 506 to rotate around the protruding shaft and drive the turntable 502 to rotate clockwise (limited by the limiting block 507). During the rotation of the turntable 502, the push-pull rod 503 at the eccentric position rotates synchronously, pushing the locking rod 504 to slide outward along the guide seat 505 until the locking rod 504 is inserted into the locking hole 101 of the base 1, thereby locking the manhole cover 2 to the base 1.

[0034] Unlocking and Opening: When the manhole cover 2 needs to be opened, use a hook tool to reach into the lifting hole 3, hook the pull ring 561, and pull upwards. The drive rod 506 moves upwards against the gravity of the counterweight ball 563, causing the turntable 502 to rotate counterclockwise. The push-pull rod 503 rotates with the turntable 502, pulling back the locking rod 504, causing the locking rod 504 to be pulled out of the locking hole 101. After the locking rod 504 is completely disengaged from the locking hole 101, the manhole cover 2 can be lifted through the lifting hole 3 and flipped open around the hinge part 4.

[0035] Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A rainwater well lid theft-proof device, comprising a well lid (2) and a base (1), a hinge part (4) is arranged between the well lid (2) and the base (1), the well lid (2) can be flipped open around the hinge part (4), a pull hole (3) is arranged on the well lid (2) opposite the hinge part (4), and the well lid (2) can be pulled up and flipped through the pull hole (3); characterized in that, An anti-theft component (5) is installed below the manhole cover (2). The anti-theft component (5) includes a bearing seat (501), which is fixed to the lower side of the manhole cover (2). A turntable (502) is installed on the bearing seat (501), and the turntable (502) can rotate around the bearing seat (501). A push-pull rod (503) is provided at the eccentric position of the turntable (502), and a locking rod (504) is hinged to the outer end of the push-pull rod (503). A guide seat (505) is fixed on the lower side of the lock rod (504). The lock rod (504) passes laterally through the guide seat (505). When the turntable (502) rotates, it drives the push-pull rod (503) at the eccentric position to rotate. The push-pull rod (503) drives the lock rod (504) to slide laterally in the guide seat (505). A lock hole (101) is provided on the side wall of the base (1) corresponding to the outer end of the lock rod (504). The turntable (502) rotates to push the lock rod (504). When the locking rod (504) extends outward, it can be inserted into the lock hole (101). When the turntable (502) rotates to pull back the locking rod (504), the locking rod (504) can be pulled out of the lock hole (101). The turntable (502) is also provided with a drive rod (506). A protruding shaft is provided at the eccentric position of the turntable (502). A shaft hole is provided in the middle of the drive rod (506). The drive rod (506) is rotatably mounted on the protruding shaft through the shaft hole. A pull ring (561) is provided at the upper end of the drive rod (506), and a counterweight ball (563) is provided at the lower end of the drive rod (506); the lifting hole (3) on the manhole cover (2) extends downward into a limiting tube (201), and the upper end of the drive rod (506) is located in the limiting tube (201); a limiting block (507) is also provided on the turntable (502), and the rotation direction and rotation angle of the turntable (502) are limited by the limiting block (507).

2. The anti-theft device for rainwater well covers according to claim 1, characterized in that, The turntable (502) is provided with a set of symmetrical push-pull rods (503) and locking rods (504) at an eccentric position. The push-pull rods (503) and locking rods (504) are symmetrical about the turntable (502). The base (1) is provided with symmetrical lock holes (101).

3. The anti-theft device for rainwater well covers according to claim 1, characterized in that, The push-pull rod (503) is an L-shaped rod. An eccentric hole is provided on the turntable (502). One end of the L-shaped rod is inserted into the eccentric hole, and the other end is hinged to the locking rod (504). A pin hole is provided at the end of the L-shaped rod inserted into the eccentric hole, and a cotter pin is inserted into the pin hole, thereby installing the push-pull rod (503) on the turntable (502).

4. The anti-theft device for rainwater well covers according to claim 1, characterized in that, The bearing seat (501) is composed of two symmetrical right-angle plates. The horizontal section of the right-angle plate is fixed on the lower side of the manhole cover (2). The lower end of the vertical section of the right-angle plate is provided with a shaft hole. The center of the turntable (502) is provided with a horizontal shaft. The shafts on both sides of the turntable (502) are respectively inserted into the corresponding shaft holes.

5. The anti-theft device for rainwater well covers according to claim 3, characterized in that, The drive rod (506) includes a rod body (562), a pull ring (561), and a counterweight ball (563). The rod body (562) is provided with a shaft hole, the upper end of the rod body (562) is provided with a pull ring (561), and the lower end of the rod body (562) is fixed with a counterweight ball (563). The rod body (562) is fitted onto an L-shaped rod that is inserted into the eccentric hole of the turntable (502) through the shaft hole.

6. The anti-theft device for rainwater well covers according to claim 1, characterized in that, The counterweight ball (563) is a hollow metal ball, which is welded to the lower end of the drive rod (506).

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