Self-locking well lid

Abstract

The utility model relates to the technical field of municipal road construction, in particular to a self-locking well lid which comprises a well lid base, a well lid body and a pull rod, locking grooves are formed in the two sides of the interior of the well lid base, the top end of the inner side of the well lid base is obliquely arranged, and mounting plates are fixedly arranged on the two sides of the bottom end of the well lid body. A bottom plate is fixedly arranged on one side of the mounting plate, a movable groove is formed in one side of the bottom plate, a limiting mechanism is arranged in the movable groove, and a movable plate is movably arranged in the movable groove. According to the manhole cover base, the locking states of the two sides of the manhole cover can be sequentially cancelled, and after the clamping blocks are clamped into the fixing grooves, the locking blocks are effectively prevented from moving, so that a single worker can operate the manhole cover at one position by a single person, the working efficiency of the worker is improved, the manhole cover can be effectively fixed into the manhole cover base, and the manhole cover base is convenient to use. And an effective locking state is formed.

Description

Technical Field

[0001] The utility model relates to the technical field of municipal road construction, in particular to a self-locking manhole cover. Background Art

[0002] Manhole covers are used to cover deep wells on roads or in homes to prevent people or objects from falling. According to the material, they can be divided into metal manhole covers, high-strength fiber cement concrete manhole covers, resin manhole covers, etc. They are generally round. They can be used in green belts, sidewalks, motorway lanes, docks, alleys, etc.

[0003] In a self-locking manhole cover disclosed in the Chinese utility model patent application disclosure CN220247159U, although the telescopic tube can protect the pressure spring to prevent external water stains and dust from contacting the pressure spring, causing corrosion of the pressure spring and affecting its use, and the manhole cover can be quickly locked while being convenient for users to remove the manhole cover, the operation is relatively cumbersome during use, and it is impossible for a single staff member to operate it. Therefore, a self-locking manhole cover is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a self-locking manhole cover to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A self-locking manhole cover comprises a manhole cover base, a manhole cover and a pull rod, wherein locking grooves are provided on both sides of the manhole cover base, the inner top end of the manhole cover base is inclined, mounting plates are fixedly provided on both sides of the bottom end of the manhole cover, a bottom plate is fixedly provided on one side of the mounting plate, a movable groove is provided on one side of the bottom plate, a limiting mechanism is provided inside the movable groove, a movable plate is movably provided inside the movable groove, a baffle is fixedly provided on one side of the movable plate, a first spring is provided on the outer side of the bottom plate, the first spring contacts the baffle, a groove is provided on the top end of the baffle, a positioning mechanism is provided inside the groove, a locking block is fixedly provided on one side of the baffle, a plurality of drainage holes are provided inside the manhole cover, operating grooves are provided on both sides of the manhole cover, fixing grooves are provided on both sides of the bottom end of the manhole cover located on one side of the operating groove, and a removal mechanism is provided inside the fixing groove.

[0007] Preferably, the limiting mechanism comprises a limiting groove, a limiting rod and a limiting block, the limiting grooves are provided on both sides of the movable groove, the limiting rod is fixedly arranged inside the limiting groove, the limiting block is movably arranged outside the limiting rod, and the limiting block is fixedly connected to the movable plate;

[0008] Preferably, the positioning mechanism comprises a telescopic rod, a second spring, a movable plate, a clamping block, a movable block and a guide groove, the bottom end of the groove is fixedly provided with a telescopic rod, the outer side of the telescopic end of the telescopic rod is provided with a second spring, the telescopic end of the telescopic rod is fixedly provided with a movable plate, the top of the movable plate is fixedly provided with a clamping block, both sides of the movable plate are fixedly provided with movable blocks, and both sides of the groove are provided with guide grooves;

[0009] Preferably, a guide rod is fixedly arranged inside the guide groove, and the guide rod is movably connected to the moving block;

[0010] Preferably, the removal mechanism comprises a top plate, a slide bar and a stopper, a top plate is movably arranged on one side of the interior of the fixed slot, one end of the top plate passes through the fixed slot and is arranged inside the operating slot, a slide bar is fixedly arranged on one side of the interior of the fixed slot, the slide bar is movably connected to the top plate, and a stopper is fixedly arranged on the bottom end of the slide bar;

[0011] Preferably, positioning blocks are fixedly provided on both sides of the locking groove on the inner side of the manhole cover base.

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

[0013] 1. By passing the pull rod through the operating groove and moving the pull rod inward, the bottom end of the pull rod is in contact with the baffle. When the pulling force of the person is greater than the elastic force of the first spring, the baffle can be moved inward, thereby driving the locking block to leave the locking groove, canceling the fixing effect between the manhole cover and the manhole cover base. Until the baffle moves to the bottom position, because one side of the card block is set in a trapezoidal shape, the card block can easily enter the fixed groove to prevent the locking block from moving again. This setting can cancel the locking state of both sides of the manhole cover in turn, and when the card block is stuck in the fixed groove, it effectively prevents the movement of the locking block, so that a single staff member can perform single-person operation on a manhole cover, thereby improving the work efficiency of the staff.

[0014] 2. After the locking block of the manhole cover is placed between the positioning blocks on top of the manhole cover base, the pull rod is placed into the operating groove, and the bottom end of the pull rod is in contact with the top plate, and force is applied downward. At this time, under the action of the sliding rod, the top plate can be moved vertically downward along the surface of the sliding rod, thereby pushing the block out of the fixed groove and canceling the fixing effect between the baffle and the manhole cover. At this time, the first spring will push the baffle to one side so that its locking block is stuck in the locking groove to form a locking effect. This setting can effectively fix the manhole cover inside the manhole cover base to form an effective locking state, while preventing the water in the sewer from lifting the manhole cover when it surges upward. In addition, this operation is relatively simple and convenient, which is convenient for the staff to operate it, thereby improving the overall practicality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall front view structure of the utility model;

[0016] Figure 2 It is a schematic cross-sectional structure diagram of the limiting mechanism of the utility model;

[0017] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the groove of the utility model;

[0018] Figure 4 It is a cross-sectional structural schematic diagram of the removal mechanism of the utility model;

[0019] Figure 5 It is a schematic diagram of the cross-sectional structure of the inner part of the manhole cover base of the utility model.

[0020] In the figure: 1. manhole cover base; 2. manhole cover; 3. pull rod; 4. locking groove; 5. mounting plate; 6. bottom plate; 7. movable groove; 8. movable plate; 9. baffle; 10. first spring; 11. groove; 12. locking block; 13. drainage hole; 14. operating groove; 15. fixing groove; 16. limiting groove; 17. limiting rod; 18. limiting block; 19. telescopic rod; 20. second spring; 21. movable plate; 22. block; 23. movable block; 24. guide groove; 25. guide rod; 26. top plate; 27. sliding rod; 28. block; 29. ​​positioning block. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 5 As shown, a technical solution provided by the utility model:

[0023] A self-locking manhole cover comprises a manhole cover base 1, a manhole cover 2 and a pull rod 3. Locking grooves 4 are provided on both sides of the manhole cover base 1. The inner top of the manhole cover base 1 is inclined. Mounting plates 5 are fixedly provided on both sides of the bottom end of the manhole cover 2. A bottom plate 6 is fixedly provided on one side of the mounting plate 5. A movable groove 7 is provided on one side of the bottom plate 6. A limiting mechanism is provided inside the movable groove 7. A movable plate 8 is movably provided inside the movable groove 7. A baffle 9 is fixedly provided on one side of the movable plate 8. A first spring 10 is provided on the outer side of the bottom plate 6. The first spring 10 contacts the baffle 9. A groove 11 is provided on the top of the baffle 9. A positioning mechanism is provided inside the groove 11. A locking block 12 is fixedly provided on one side of the baffle 9. A plurality of drainage holes 13 are provided inside the manhole cover 2. Operating grooves 14 are provided on both sides of the manhole cover 2. Fixed grooves 15 are provided on both sides of the bottom end of the manhole cover 2 on one side of the operating groove 14. A removal mechanism is provided inside the fixed groove 15.

[0024] Through the above solution, the inside of the manhole cover base 1 is tilted, which can effectively prevent the manhole cover 2 from falling due to gravity.

[0025] In this embodiment, preferably, the limiting mechanism includes a limiting groove 16, a limiting rod 17 and a limiting block 18, the limiting grooves 16 are provided on both sides of the movable groove 7, the limiting rod 17 is fixedly arranged inside the limiting groove 16, the limiting block 18 is movably arranged outside the limiting rod 17, and the limiting block 18 is fixedly connected to the movable plate 8;

[0026] The above scheme can limit the movable plate 8, prevent the movable plate 8 from being ejected from the movable groove 7 by the first spring 10, and support it so that the movable plate 8 always maintains horizontal displacement;

[0027] In this embodiment, preferably, the positioning mechanism includes a telescopic rod 19, a second spring 20, a movable plate 21, a block 22, a movable block 23 and a guide groove 24, the bottom end of the inner groove 11 is fixedly provided with the telescopic rod 19, the outer side of the telescopic end of the telescopic rod 19 is provided with the second spring 20, the telescopic end of the telescopic rod 19 is fixedly provided with the movable plate 21, the top of the movable plate 21 is fixedly provided with the block 22, both sides of the movable plate 21 are fixedly provided with the movable blocks 23, and both sides of the inner groove 11 are provided with guide grooves 24;

[0028] Through the above solution, under the action of the second spring 20, the movable plate 21 can be driven to move upward as a whole, so that the clamping block 22 at the top thereof is clamped into the fixed groove 15, forming a positioning effect, and the locking block 12 can no longer move after the locking state is canceled;

[0029] In this embodiment, preferably, a guide rod 25 is fixedly disposed inside the guide groove 24, and the guide rod 25 is movably connected to the moving block 23;

[0030] Through the above scheme, the movable plate 21 plays a role of limiting and guiding, so that the movable block 23 can move vertically up and down along the surface of the guide rod 25, so that the movable plate 21 remains vertical;

[0031] In this embodiment, preferably, the removal mechanism includes a top plate 26, a slide bar 27 and a stopper 28. The top plate 26 is movably arranged on one side of the interior of the fixed groove 15. One end of the top plate 26 passes through the fixed groove 15 in the operating groove 14. The slide bar 27 is fixedly arranged on one side of the interior of the fixed groove 15. The slide bar 27 is movably connected to the top plate 26. The bottom end of the slide bar 27 is fixedly arranged with a stopper 28.

[0032] Through the above solution, under the action of the top plate 26, the block 22 is pushed out of the fixing groove 15, and at the same time, under the action of the slide bar 27 and the stopper 28, the top plate 26 is prevented from falling due to gravity.

[0033] In this embodiment, preferably, positioning blocks 29 are fixedly provided on both sides of the locking groove 4 on the inner side of the manhole cover base 1;

[0034] Through the above solution, the manhole cover 2 is positioned so that the installation position is maintained each time, and the locking block 12 can be accurately inserted into the locking groove 4.

[0035] The self-locking manhole cover of the present embodiment is a kind of self-locking manhole cover. The pull rod 3 passes through the operating groove 14 and moves the pull rod 3 inward. At this time, the bottom end of the pull rod 3 contacts the baffle 9. When the pulling force of the person is greater than the elastic force of the first spring 10, the baffle 9 can be moved inward, thereby driving the locking block 12 to leave the locking groove 4, canceling the fixing effect between the manhole cover 2 and the manhole cover base 1. Until the baffle 9 moves to the bottom position, because one side of the card block 22 is a trapezoidal setting, the card block 22 can easily enter the fixed groove 15 to prevent the locking block 12 from moving again. This setting can cancel the locking state of both sides of the manhole cover 2 in turn, and when the card block 22 is stuck in the fixed groove 15, the movement of the locking block 12 is effectively prevented, so that a single staff member can perform a single-person operation on a manhole cover 2, thereby improving the work efficiency of the staff.

[0036] After the locking block 12 of the manhole cover 2 is placed between the positioning blocks 29 and onto the top of the manhole cover base 1, the pull rod 3 is placed into the operating groove 14, and the bottom end of the pull rod 3 is in contact with the top plate 26, and force is applied downward. At this time, under the action of the slide bar 27, the top plate 26 can be moved vertically downward along the surface of the slide bar 27, thereby pushing the block 22 out of the fixing groove 15, and canceling the fixing effect between the baffle 9 and the manhole cover 2. At this time, the first spring 10 will push the baffle 9 to move to one side, so that its locking block 12 is stuck in the locking groove 4 to form a locking effect. This setting can effectively fix the manhole cover 2 inside the manhole cover base 1 to form an effective locking state, while preventing the manhole cover 2 from being lifted up when the water in the sewer surges upward, and this operation is relatively simple and convenient, which is convenient for the staff to operate it, thereby improving the overall practicality of the equipment.

[0037] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A self-locking manhole cover, comprising a manhole cover base (1), a manhole cover (2) and a pull rod (3), characterized in that: The manhole cover base (1) is provided with locking grooves (4) on both sides thereof, the inner top of the manhole cover base (1) is inclined, mounting plates (5) are fixedly provided on both sides of the bottom end of the manhole cover (2), a bottom plate (6) is fixedly provided on one side of the mounting plate (5), a movable groove (7) is provided on one side of the bottom plate (6), a limiting mechanism is provided inside the movable groove (7), a movable plate (8) is movably provided inside the movable groove (7), a baffle (9) is fixedly provided on one side of the movable plate (8), and a first elastic member is provided on the outer side of the bottom plate (6). A spring (10) is provided, the first spring (10) is in contact with a baffle (9), a groove (11) is provided at the top of the baffle (9), a positioning mechanism is provided inside the groove (11), a locking block (12) is fixedly provided on one side of the baffle (9), a plurality of drainage holes (13) are provided inside the manhole cover (2), operating grooves (14) are provided on both sides of the inside of the manhole cover (2), fixing grooves (15) are provided on both sides of the bottom end of the manhole cover (2) and located on one side of the operating groove (14), and a removal mechanism is provided inside the fixing groove (15).

2. A self-locking manhole cover according to claim 1, characterized in that: The limiting mechanism comprises a limiting groove (16), a limiting rod (17) and a limiting block (18); the limiting grooves (16) are provided on both sides of the movable groove (7); the limiting rod (17) is fixedly arranged inside the limiting groove (16); the limiting block (18) is movably arranged outside the limiting rod (17); and the limiting block (18) is fixedly connected to the movable plate (8).

3. A self-locking manhole cover according to claim 1, characterized in that: The positioning mechanism comprises a telescopic rod (19), a second spring (20), a movable plate (21), a clamping block (22), a movable block (23) and a guide groove (24); the bottom end of the groove (11) is fixedly provided with the telescopic rod (19); the outer side of the telescopic end of the telescopic rod (19) is provided with the second spring (20); the telescopic end of the telescopic rod (19) is fixedly provided with the movable plate (21); the top end of the movable plate (21) is fixedly provided with the clamping block (22); both sides of the movable plate (21) are fixedly provided with the movable blocks (23); and both sides of the groove (11) are provided with guide grooves (24).

4. A self-locking manhole cover according to claim 3, characterized in that: A guide rod (25) is fixedly arranged inside the guide groove (24), and the guide rod (25) is movably connected to the moving block (23).

5. The self-locking manhole cover according to claim 1, characterized in that: The removal mechanism comprises a top plate (26), a slide bar (27) and a stopper (28); the top plate (26) is movably arranged on one side of the interior of the fixed groove (15); one end of the top plate (26) passes through the fixed groove (15) and is arranged inside the operating groove (14); a slide bar (27) is fixedly arranged on one side of the interior of the fixed groove (15); the slide bar (27) is movably connected to the top plate (26); and a stopper (28) is fixedly arranged on the bottom end of the slide bar (27).

6. The self-locking manhole cover according to claim 1, characterized in that: Positioning blocks (29) are fixedly arranged on both sides of the locking groove (4) on the inner side of the manhole cover base (1).

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