Locking structure of sewer well lid

Abstract

The utility model discloses a locking structure of a sewer well lid, which belongs to the technical field of sewer well lids and comprises a base, the lower end face of a cover plate is fixedly connected with a plurality of fixing frames which are distributed in an array mode, the interiors of the fixing frames are all rotatably connected with connecting frames through shaft rods, torsion springs are arranged between the fixing frames and the connecting frames, and the connecting frames are connected with the fixing frames through shaft rods. The two ends of the torsion spring are fixedly connected with the fixing frame and the connecting frame respectively, the other end of the connecting frame is fixedly connected with a clamping block, a plurality of clamping grooves matched with the clamping block are formed in the inner wall of the clamping ring, the cover plate is placed in the clamping ring, then the cover plate is rotated, the fixing frame, the connecting frame, the torsion spring, the clamping block, the sliding column and the clamping column are made to rotate, and the clamping ring is clamped in the clamping groove. When the clamping blocks are aligned with the clamping grooves, the torsional springs drive the connecting frames to rotate, the clamping blocks enter the clamping grooves, the cover plate is fixed, and the well lid has the advantages that the fixing effect of the well lid is better, the well lid is not prone to shaking or shifting, and the well lid is more convenient to open.

Description

Technical Field

[0001] The utility model relates to the technical field of sewer manhole covers, and particularly relates to a locking structure of a sewer manhole cover. Background Technique

[0002] Sewer manhole covers are used to cover the deep wells of road sewers to prevent people or objects from falling. They can be divided into metal manhole covers, high-strength fiber cement concrete manhole covers, resin manhole covers, etc. Sewer manhole covers are generally circular because circular manhole covers are not easily tilted and can well protect the safety of pedestrians and vehicles.

[0003] At present, most of the fixing methods of sewer manhole covers are simple placement methods. There is a metal retaining ring fixed at the sewer wellhead for bearing, and the manhole cover is directly placed on the metal retaining ring. This method has a poor fixing effect on the manhole cover. After being run over by cars and impacted by rainwater many times, the manhole cover is prone to shaking and offsetting; and when the existing manhole cover is opened, workers need to pry the manhole cover with a crowbar, which is more troublesome and time-consuming. Content of the Utility Model

[0004] To solve the problems in the above background, the utility model provides a locking structure of a sewer manhole cover, which has the characteristics of better fixing effect of the manhole cover, not easy to shake and offset, and more convenient to open the manhole cover.

[0005] The utility model is realized as follows. A locking structure of a sewer manhole cover includes a base. The upper end surface of the base is fixedly connected with a clamping ring. Inside the clamping ring, there is a cover plate located above the base. The outer wall of the cover plate is fixedly connected with an outer edge located above the clamping ring. The lower end surface of the cover plate is fixedly connected with a plurality of fixedly arranged fixing frames. Inside each of the plurality of fixing frames, a connecting frame is rotatably connected through a torsion spring. The other end of the connecting frame is fixedly connected with a clamping block. The upper end surface of the clamping block is provided with a clamping groove. The inner wall of the clamping ring is provided with a plurality of clamping grooves matching the clamping blocks.

[0006] The lower end surface of the cover plate is provided with a plurality of fixedly arranged sliding grooves. Inside each of the plurality of sliding grooves, a sliding column is slidably connected. The outer wall of the sliding column is fixedly connected with a clamping column matching the clamping groove through a connecting rod. The upper end surface of the base is provided with a plurality of grooves matching the sliding columns.

[0007] To prevent the cover plate from offsetting, as a preferred locking structure of a sewer manhole cover of the utility model, the outer wall of the cover plate is in close contact with the inner wall of the clamping ring.

[0008] To make the sliding column easier to reset, as a preferred locking structure of a sewer manhole cover of the utility model, a spring is arranged between the upper end surface of the sliding column and the inner wall of the sliding groove.

[0009] In order to enhance the shock absorption effect between the outer edge and the clamping ring, as an optimization of the locking structure of a sewer manhole cover of the present utility model, a rubber ring fixedly connected to the outer edge is sleeved on the outer wall of the cover plate.

[0010] In order to facilitate the opening of the cover plate, as an optimization of the locking structure of a sewer manhole cover of the present utility model, a plurality of uniformly distributed handles are fixedly connected to the upper end surface of the cover plate.

[0011] In order to prevent the sliding column from falling off from the inside of the sliding groove, as an optimization of the locking structure of a sewer manhole cover of the present utility model, limiting grooves are provided on the left and right inner side walls of the sliding groove, and limiting blocks located inside the limiting grooves are fixedly connected to the left and right ends of the sliding column.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] In the present utility model, the cover plate is placed inside the clamping ring. When the lower end surface of the outer edge abuts against the upper end surface of the clamping ring, the upper end surface of the base presses the sliding column, causing the sliding column to move upward into the inside of the sliding groove, driving the clamping column to move upward, and simultaneously compressing the spring, so that the clamping column disengages from the clamping groove. Then, the cover plate is rotated, causing the fixing frame, connecting frame, torsion spring, clamping block, sliding column, and clamping column to rotate. When the clamping block aligns with the clamping groove, the torsion spring drives the connecting frame to rotate, causing the clamping block to enter the clamping groove and fixing the cover plate. The manhole cover is not easily shaken or displaced, and the fixing effect on the manhole cover is better.

[0014] In addition, in the present utility model, by rotating the cover plate, the fixing frame, connecting frame, torsion spring, clamping block, sliding column, and clamping column rotate accordingly. The inner side wall of the clamping groove presses the clamping block, causing the clamping block to drive the connecting frame to rotate and reset. When the sliding column aligns with the groove, the spring presses the sliding column to move downward, causing one end of the sliding column to enter the groove, and simultaneously driving the clamping column to move downward into the clamping groove to fix the clamping block. Then, the cover plate is lifted upward, making it more convenient to open the manhole cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the overall structure diagram of a locking structure of a sewer manhole cover of the present utility model;

[0016] Figure 2 It is a partial structure diagram of the present utility model;

[0017] Figure 3 It is the structure diagram of the base and the clamping ring of the present utility model;

[0018] Figure 4 It is the overall sectional structure diagram of the present utility model;

[0019] Figure 5 It is a partial sectional structure diagram of the present utility model;

[0020] Figure 6 For the present utility model Figure 5 is the enlarged structure diagram of A in it.

[0021] In the figure, 1 is the base; 2 is the clamping ring; 3 is the cover plate; 4 is the outer edge; 5 is the rubber ring; 6 is the clamping groove; 7 is the groove; 8 is the handle; 9 is the fixing frame; 10 is the connecting frame; 11 is the torsion spring; 12 is the clamping block; 13 is the clamping slot; 14 is the sliding groove; 15 is the sliding column; 16 is the spring; 17 is the clamping post. Specific embodiments

[0022] In order to make the purpose, technical solutions and advantages of the present utility model more clear and understandable, the following further details the present utility model in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model. In addition, in the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically defined.

[0024] Please refer to Figures 1-6 , a locking structure for a sewer manhole cover, including a base 1, the upper end surface of the base 1 is fixedly connected with a clamping ring 2, the inside of the clamping ring 2 is provided with a cover plate 3 located above the base 1, the outer wall of the cover plate 3 is fixedly connected with an outer edge 4 located above the clamping ring 2, the lower end surface of the cover plate 3 is fixedly connected with a plurality of fixing frames 9 distributed in an array, the inside of each of the plurality of fixing frames 9 is rotatably connected with a connecting frame 10 through a torsion spring 11, the other end of the connecting frame 10 is fixedly connected with a clamping block 12, the upper end surface of the clamping block 12 is provided with a clamping slot 13, and the inner wall of the clamping ring 2 is provided with a plurality of clamping grooves 6 matching the clamping block 12;

[0025] The lower end surface of the cover plate 3 is provided with a plurality of sliding grooves 14 distributed in an array, the inside of each of the plurality of sliding grooves 14 is slidably connected with a sliding column 15, the outer wall of the sliding column 15 is fixedly connected with a clamping post 17 matching the clamping slot 13 through a connecting rod, and the upper end surface of the base 1 is provided with a plurality of grooves 7 matching the sliding column 15.

[0026] In this embodiment: During installation, the base 1 is fixed at the sewer wellhead, and the cover plate 3 is placed inside the clamping ring 2. When the lower end surface of the outer edge 4 abuts against the upper end surface of the clamping ring 2, the upper end surface of the base 1 presses the sliding column 15, causing the sliding column 15 to move upward into the inside of the sliding groove 14, driving the clamping column 17 to move upward, so that the clamping column 17 disengages from the clamping groove 13. Then, the cover plate 3 is rotated, causing the fixing frame 9, the connecting frame 10, the torsion spring 11, the clamping block 12, the sliding column 15, and the clamping column 17 to rotate. When the clamping block 12 aligns with the clamping groove 6, the torsion spring 11 drives the connecting frame 10 to rotate, causing the clamping block 12 to enter the clamping groove 6, fixing the cover plate 3. The manhole cover is not prone to shaking and deviation, and the fixing effect on the manhole cover is better;

[0027] When it is necessary to open the sewer manhole cover, by rotating the cover plate 3, the fixing frame 9, the connecting frame 10, the torsion spring 11, the clamping block 12, the sliding column 15, and the clamping column 17 rotate accordingly. By the inner side wall of the clamping groove 6 pressing the clamping block 12, the clamping block 12 drives the connecting frame 10 to rotate and reset. When the sliding column 15 aligns with the groove 7, one end of the sliding column 15 moves downward into the groove 7, and at the same time drives the clamping column 17 to move downward into the clamping groove 13, fixing the clamping block 12. Lifting the cover plate 3 upward makes it more convenient to open the manhole cover.

[0028] As a technical optimization scheme of the present utility model, the outer wall of the cover plate 3 is in close contact with the inner wall of the clamping ring 2.

[0029] In this embodiment: By the outer wall of the cover plate 3 being in close contact with the inner wall of the clamping ring 2, the cover plate 3 is prevented from shifting.

[0030] As a technical optimization scheme of the present utility model, a spring 16 is provided between the upper end surface of the sliding column 15 and the inner wall of the sliding groove 14.

[0031] In this embodiment: By the spring 16 pressing the sliding column 15, the sliding column 15 is more easily reset.

[0032] As a technical optimization scheme of the present utility model, a rubber ring 5 fixedly connected to the outer edge 4 is sleeved on the outer wall of the cover plate 3.

[0033] In this embodiment: By a rubber ring 5 fixedly connected to the outer edge 4 being sleeved on the outer wall of the cover plate 3, the damping effect between the outer edge 4 and the clamping ring 2 is better.

[0034] As a technical optimization scheme of the present utility model, a plurality of handle 8s distributed in an array are fixedly connected to the upper end surface of the cover plate 3.

[0035] In this embodiment: By the handle 8s, it is convenient to lift and rotate the cover plate 3.

[0036] As a technical optimization solution of the utility model, limiting grooves are provided on the left and right inner side walls of the sliding groove 14, and limiting blocks located inside the limiting grooves are fixedly connected to the left and right ends of the sliding column 15.

[0037] In this embodiment: By moving the limiting block inside the limiting groove, the sliding column 15 is prevented from detaching from the inside of the sliding groove 14.

[0038] The working principle and usage process of the utility model:

[0039] During installation: First, fix the base 1 at the sewer wellhead, and then place the cover plate 3 inside the clamping ring 2. When the lower end surface of the outer edge 4 abuts against the upper end surface of the clamping ring 2, the upper end surface of the base 1 presses the sliding column 15, causing the sliding column 15 to move upward into the inside of the sliding groove 14, driving the clamping column 17 to move upward, and simultaneously compressing the spring 16, causing the clamping column 17 to disengage from the clamping groove 13. Then rotate the cover plate 3 to rotate the fixing frame 9, connecting frame 10, torsion spring 11, clamping block 12, sliding column 15 and clamping column 17. When the clamping block 12 is aligned with the clamping groove 6, the torsion spring 11 drives the connecting frame 10 to rotate, causing the clamping block 12 to enter the clamping groove 6, fixing the cover plate 3, and making the manhole cover not easily shake or shift, with a better fixing effect on the manhole cover;

[0040] When it is necessary to open the sewer manhole cover: By rotating the cover plate 3, the fixing frame 9, connecting frame 10, torsion spring 11, clamping block 12, sliding column 15 and clamping column 17 rotate accordingly. The inner side wall of the clamping groove 6 presses the clamping block 12, causing the clamping block 12 to drive the connecting frame 10 to rotate and reset. When the sliding column 15 is aligned with the groove 7, the spring 16 presses the sliding column 15 to move downward, causing one end of the sliding column 15 to enter the groove 7, and simultaneously driving the clamping column 17 to move downward into the clamping groove 13 to fix the clamping block 12. Then lift the cover plate 3 upward, making it more convenient to open the manhole cover.

[0041] The above are only the preferred embodiments of the utility model and are not intended to limit the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A locking structure for a sewer manhole cover, comprising a base (1), characterized in that: The upper end surface of the base (1) is fixedly connected to a clamping ring (2), the inside of the clamping ring (2) is provided with a cover plate (3) located above the base (1), the outer wall of the cover plate (3) is fixedly connected to an outer edge (4) located above the clamping ring (2), the lower end surface of the cover plate (3) is fixedly connected to a plurality of fixed frames (9) distributed in an array, the insides of the plurality of fixed frames (9) are rotatably connected to a connecting frame (10) through a torsion spring (11), the other end of the connecting frame (10) is fixedly connected to a clamping block (12), the upper end surface of the clamping block (12) is provided with a clamping groove (13), and the inner wall of the clamping ring (2) is provided with a plurality of clamping grooves (6) matching the clamping block (12); The lower end surface of the cover plate (3) is provided with a plurality of slide grooves (14) distributed in an array, the interiors of the plurality of slide grooves (14) are slidably connected with slide columns (15), the outer walls of the slide columns (15) are fixedly connected with a clamping column (17) matching the clamping grooves (13) via a connecting rod, and the upper end surface of the base (1) is provided with a plurality of grooves (7) matching the slide columns (15).

2. The locking structure of a sewer manhole cover according to claim 1, characterized in that: The outer wall of the cover plate (3) is in close contact with the inner wall of the clamping ring (2).

3. The locking structure of a sewer manhole cover according to claim 1, characterized in that: A spring (16) is provided between the upper end surface of the slide column (15) and the inner wall of the slide groove (14).

4. The locking structure of a sewer manhole cover according to claim 1, characterized in that: The outer wall of the cover plate (3) is sleeved with a rubber ring (5) fixedly connected to the outer edge (4).

5. The locking structure of a sewer manhole cover according to claim 1, characterized in that: A plurality of handles (8) distributed in an array are fixedly connected to the upper end surface of the cover plate (3).

6. The locking structure of a sewer manhole cover according to claim 1, characterized in that: The left and right inner side walls of the slide groove (14) are both provided with limiting grooves, and the left and right ends of the slide column (15) are both fixedly connected with limiting blocks located inside the limiting grooves.

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