Sewer well lid lifting device

Abstract

The utility model relates to the technical field of sewer well lids, in particular to a sewer well lid lifting device which comprises a top plate, a movable plate is arranged below the top plate, a sliding groove is formed in the lower end face of the movable plate, two sliding blocks distributed left and right are connected into the sliding groove in a sliding mode, and the lower end faces of the sliding blocks are rotationally connected with connecting rods. The other end of the connecting rod is fixedly connected with a low block; a moving plate drives a connecting rod to move downwards, the connecting rod drives a low block, a moving ring, a clamping block and a rotating rod to move to the position below the well lid through an opening hole, then the connecting rod is rotated by 90 degrees, and the clamping block abuts against the lower end face of the well lid; when the manhole cover is opened, the movable plate moves upwards, the clamping block is limited by the manhole cover, the clamping block is matched with the movable ring to extrude the rotating rod to be opened outwards, then a cross-shaped structure is formed between the rotating rod and the clamping block, the connecting rod is firmly fixed to the lower portion of the manhole cover through the cross-shaped structure, then the movable plate continues to move upwards, and the movable plate is matched with the connecting rod to open the manhole cover. And therefore, the well lid can be opened conveniently and quickly.

Description

Technical Field

[0001] The utility model relates to the technical field of sewer manhole covers, in particular to a sewer manhole cover lifting device. Background Art

[0002] The sewer manhole cover is one of the important basic maintenance facilities in the inspection and maintenance of municipal roads. During the maintenance of the manhole cover, it is first necessary to use maintenance equipment to lift the manhole cover out of the wellhead through the opening hole on the manhole cover, and then perform detailed maintenance on it.

[0003] The existing sewer manhole cover opening device mostly opens the manhole cover by the lever principle. When the existing sewer manhole cover opening device is used, a clamping block with an inverted T-shaped structure is extended to the bottom of the manhole cover through the opening hole of the long strip structure, and then the clamping block is rotated 90 degrees so that the two protrusions of the clamping block abut against the lower end surface of the manhole cover, and then the clamping block is fixed in the opening hole, and then the manhole cover is opened by the lever principle;

[0004] However, the specifications and weights of manhole covers are different. At the same time, some manhole covers have not been opened for a long time, resulting in the manhole covers being tightly adsorbed at the wellhead, making the opening process time-consuming and laborious. At the same time, during the opening process, when the manhole cover is heavy or tilted, the two protrusions of the card block may slide between the manhole cover, causing the card block to rotate to a state where it enters the opening hole, causing the card block to separate from the opening hole, thereby causing safety hazards during the opening process. Utility Model Content

[0005] The utility model aims to provide a sewer manhole cover lifting device, which has the characteristics of convenient and rapid opening of the manhole cover, preventing the block from being separated from the opening hole and avoiding potential safety hazards during the opening process.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sewer manhole cover lifting device, comprising a top plate, a movable plate is arranged below the top plate, a slide groove is provided on the lower end surface of the movable plate, two left and right sliding blocks are slidably connected inside the slide groove, a connecting rod is rotatably connected to the lower end surface of the sliding block, a low block is fixedly connected to the other end of the connecting rod, a groove is provided on the upper end surface of the low block, a movable ring is slidably connected to the outer wall of the connecting rod, two front and rear distributed card blocks are fixedly connected to the outer wall of the movable ring, the movable ring and the outer wall of the low block are both rotatably connected to two left and right distributed rotating rods through a hinge seat, and the two rotating rods distributed up and down are movably connected through an axis;

[0007] The lower end surface of the top plate is fixedly connected to a protective shell, the upper end surface of the movable plate is fixedly connected to a plurality of evenly distributed first screw rods, the other ends of the first screw rods penetrate the protective shell and the top plate and extend to the top of the top plate, the lower end surface of the top plate is rotatably connected to a swivel that is threadedly connected to the first screw rods and is located inside the protective shell, and the outer wall of the swivel is fixedly connected to a worm gear.

[0008] In order to drive multiple rotating rings to rotate, as a preferred sewer manhole cover lifting device of the utility model, the internal rotation of the protective shell is connected to a worm meshing with multiple worm gears, and a motor is installed on the right side wall of the protective shell, and the output end of the motor is fixedly connected to the worm.

[0009] In order to drive the two sliders to move, as a preferred sewer manhole cover lifting device of the utility model, the interior of the slide groove is rotatably connected to a second screw rod threadedly connected to the two sliders, and one end of the second screw rod extends to the outside of the movable plate and is fixedly connected to a handle.

[0010] In order to push the movable ring to reset, as a preferred sewer manhole cover lifting device of the utility model, a spring sleeved on the outer wall of the connecting rod is fixedly connected between the inner lower end of the groove and the lower end surface of the movable ring.

[0011] In order to facilitate the movement of the cover-lifting device, as a preferred sewer manhole cover-lifting device of the utility model, the lower end surface of the top plate is fixedly connected with a plurality of evenly distributed legs, and the lower end surfaces of the legs are fixedly connected with universal wheels.

[0012] In order to limit the position of the first screw rod, as a preferred sewer manhole cover lifting device of the utility model, the other end of the first screw rod is fixedly connected to a limiting block.

[0013] In order to drive the two sliders to move in opposite directions, as a preferred sewer manhole cover lifting device of the utility model, the second screw rod is configured as a bidirectional screw rod.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] The motor drives the worm to rotate, the worm drives multiple worm gears to rotate, the multiple worm gears drive multiple rotating rings to rotate, the multiple rotating rings cooperate with multiple first screws to drive the moving plate to move downward, so that the moving plate drives the connecting rod to move downward, the connecting rod drives the lower block, the moving ring, the clamping block and the rotating rod to move to the bottom of the manhole cover through the opening hole, and then the connecting rod is rotated ninety degrees to make the clamping block abut against the lower end surface of the manhole cover;

[0016] Then the motor drives multiple rotating rings to rotate in the opposite direction, and the multiple rotating rings cooperate with multiple first screw rods to drive the moving plate to move upward, and the moving plate cooperates with the connecting rod to drive the card block and the moving ring to move. Through the limitation of the card block on the manhole cover, the card block drives the moving ring to move downward on the connecting rod, and the rotating rod is squeezed outward by the moving ring to open, thereby forming a cross-shaped structure between the rotating rod and the card block, and the connecting rod is firmly fixed to the bottom of the manhole cover through the cross-shaped structure to prevent the card block from detaching from the opening hole due to rotation, thereby improving the safety of the cover lifting device, and then the moving plate continues to move upward, and the moving plate cooperates with the connecting rod to open the manhole cover, thereby conveniently and quickly opening the manhole cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a front cross-sectional structural schematic diagram of the utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model when viewed from above;

[0020] Figure 4 This is a schematic diagram of the expanded cross-sectional structure of the utility model;

[0021] Figure 5 For this utility model Figure 2 The enlarged structural diagram of part a in the middle;

[0022] In the figure: 1. top plate; 2. moving plate; 3. slide groove; 4. slider; 5. connecting rod; 6. low block; 7. groove; 8. moving ring; 9. block; 10. rotating rod; 11. protective shell; 12. first screw rod; 13. swivel; 14. worm gear; 15. worm; 16. motor; 17. second screw rod; 18. handle; 19. spring; 20. support leg; 21. universal wheel; 22. limit block. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the 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 therefore cannot be understood as a limitation on the utility model. In addition, in the description of the utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0024] See also Figures 1 to 5 A sewer manhole cover lifting device comprises a top plate 1, a movable plate 2 is arranged below the top plate 1, a slide groove 3 is provided on the lower end surface of the movable plate 2, two sliders 4 distributed left and right are slidably connected inside the slide groove 3, a connecting rod 5 is rotatably connected to the lower end surface of the slider 4, a low block 6 is fixedly connected to the other end of the connecting rod 5, a groove 7 is provided on the upper end surface of the low block 6, a movable ring 8 is slidably connected to the outer wall of the connecting rod 5, two clamping blocks 9 distributed front and back are fixedly connected to the outer wall of the movable ring 8, the movable ring 8 and the outer wall of the low block 6 are both rotatably connected to two rotating rods 10 distributed left and right through a hinge seat, and the two rotating rods 10 distributed up and down are movably connected through an axis;

[0025] The lower end surface of the top plate 1 is fixedly connected to a protective shell 11, and the upper end surface of the movable plate 2 is fixedly connected to a plurality of evenly distributed first screw rods 12. The other end of the first screw rod 12 penetrates the protective shell 11 and the top plate 1 and extends to the top of the top plate 1. The lower end surface of the top plate 1 is rotatably connected to a swivel 13 which is threadedly connected to the first screw rod 12 and is located inside the protective shell 11, and the outer wall of the swivel 13 is fixedly connected to a worm gear 14.

[0026] In this embodiment: when in use, the cover-lifting device is moved to the top of the manhole cover, and then the two sliders 4 are moved in opposite directions, and the positions of the two connecting rods 5 are adjusted so that the two connecting rods 5 are respectively aligned with the opening holes opened on the manhole cover. By adjusting the positions of the two connecting rods 5, the cover-lifting device is adapted to manhole covers of different specifications;

[0027] Then the multiple swivels 13 rotate, and the multiple swivels 13 cooperate with the multiple first screws 12 to drive the moving plate 2 to move downward, so that the moving plate 2 drives the connecting rod 5 to move downward, and the connecting rod 5 drives the lower block 6, the moving ring 8, the clamping block 9 and the rotating rod 10 to move to the bottom of the manhole cover through the opening hole, and then the connecting rod 5 is rotated ninety degrees, so that the clamping block 9 abuts against the lower end surface of the manhole cover;

[0028] Then the multiple swivel rings 13 rotate in the opposite direction, and the multiple swivel rings 13 cooperate with the multiple first screw rods 12 to drive the movable plate 2 to move upward, and the movable plate 2 cooperates with the connecting rod 5 to drive the block 9 and the movable ring 8 to move. Through the limitation of the block 9 on the manhole cover, the block 9 drives the movable ring 8 to move downward on the connecting rod 5, and the rotating rod 10 is squeezed outward by the moving ring 8 to open, thereby forming a cross-shaped structure between the rotating rod 10 and the block 9, and the connecting rod 5 is firmly fixed to the bottom of the manhole cover through the cross-shaped structure to prevent the block 9 from rotating and separating from the opening hole, thereby improving the safety of the cover lifting device, and then the movable plate 2 continues to move upward, and the movable plate 2 cooperates with the connecting rod 5 to open the manhole cover, thereby conveniently and quickly opening the manhole cover.

[0029] As a technical optimization solution of the utility model, the protective shell 11 is internally rotatably connected to a worm 15 meshing with multiple worm wheels 14 , and a motor 16 is installed on the right side wall of the protective shell 11 , and the output end of the motor 16 is fixedly connected to the worm 15 .

[0030] In this embodiment: start the motor 16, the motor 16 drives the worm 15 to rotate, the worm 15 drives the multiple worm wheels 14 to rotate, and the multiple worm wheels 14 drive the multiple rotating rings 13 to rotate. Through the mutual cooperation between the worm 15 and the worm wheel 14, the movable plate 2 can be suspended at any position, further improving the safety of the lid lifting device.

[0031] As a technical optimization solution of the utility model, the interior of the slide groove 3 is rotatably connected to a second screw rod 17 threadedly connected to the two sliders 4 , and one end of the second screw rod 17 extends to the outside of the movable plate 2 and is fixedly connected to a handle 18 .

[0032] In this embodiment, the second screw rod 17 is driven to rotate by the handle 18 , and the second screw rod 17 drives the two sliders 4 to move.

[0033] As a technical optimization solution of the utility model, a spring 19 sleeved on the outer wall of the connecting rod 5 is fixedly connected between the inner lower end of the groove 7 and the lower end surface of the movable ring 8 .

[0034] In this embodiment: the spring 19 can push the movable ring 8 to reset, so as to facilitate taking the connecting rod 5 out of the opening hole, and the groove 7 can accommodate the compressed spring 19.

[0035] As a technical optimization solution of the utility model, a plurality of evenly distributed supporting legs 20 are fixedly connected to the lower end surface of the top plate 1 , and a universal wheel 21 is fixedly connected to the lower end surface of the supporting legs 20 .

[0036] In this embodiment: the legs 20 can support the cover-lifting device, and the universal wheels 21 facilitate movement of the cover-lifting device.

[0037] As a technical optimization solution of the present invention, the other end of the first screw rod 12 is fixedly connected to the limiting block 22 .

[0038] In this embodiment, the limiting block 22 can limit the first screw rod 12 to prevent the first screw rod 12 from moving below the top plate 1 .

[0039] As a technical optimization solution of the present invention, the second screw rod 17 is configured as a bidirectional screw rod.

[0040] In this embodiment, the second screw rod 17 is configured as a bidirectional screw rod, which can drive the two sliders 4 to move in opposite directions.

[0041] Working principle: When in use, the cover-lifting device is moved to the top of the manhole cover, and then the handle 18 drives the second screw rod 17 to rotate, and the second screw rod 17 drives the two sliders 4 to move in opposite directions, and the positions of the two connecting rods 5 are adjusted so that the two connecting rods 5 are respectively aligned with the opening holes opened on the manhole cover. By adjusting the positions of the two connecting rods 5, the cover-lifting device can be adapted to manhole covers of different specifications;

[0042] Then, the motor 16 is started, the motor 16 drives the worm 15 to rotate, the worm 15 drives the multiple worm wheels 14 to rotate, the multiple worm wheels 14 drive the multiple swivels 13 to rotate, the multiple swivels 13 cooperate with the multiple first screws 12 to drive the moving plate 2 to move downward, so that the moving plate 2 drives the connecting rod 5 to move downward, the connecting rod 5 drives the lower block 6, the moving ring 8, the clamping block 9 and the rotating rod 10 to move to the bottom of the manhole cover through the opening hole, and then the connecting rod 5 is rotated ninety degrees to make the clamping block 9 abut against the lower end surface of the manhole cover;

[0043] Then the motor 16 drives the multiple rotating rings 13 to rotate in the opposite direction, and the multiple rotating rings 13 cooperate with the multiple first screw rods 12 to drive the movable plate 2 to move upward, and the movable plate 2 cooperates with the connecting rod 5 to drive the block 9 and the movable ring 8 to move. Through the limitation of the block 9 on the manhole cover, the block 9 drives the movable ring 8 to move downward on the connecting rod 5, and squeezes the rotating rod 10 to open outward through the moving ring 8, thereby forming a cross-shaped structure between the rotating rod 10 and the block 9, and the connecting rod 5 is firmly fixed to the bottom of the manhole cover through the cross-shaped structure to prevent the block 9 from rotating and separating from the opening hole, thereby improving the safety of the cover lifting device, and then the movable plate 2 continues to move upward, and the movable plate 2 cooperates with the connecting rod 5 to open the manhole cover, thereby conveniently and quickly opening the manhole cover.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sewer manhole cover lifting device, comprising a top plate (1), characterized in that: A movable plate (2) is arranged below the top plate (1), a slide groove (3) is provided on the lower end surface of the movable plate (2), two sliders (4) distributed left and right are slidably connected inside the slide groove (3), the lower end surface of the slider (4) is rotatably connected with a connecting rod (5), the other end of the connecting rod (5) is fixedly connected with a low block (6), the upper end surface of the low block (6) is provided with a groove (7), the outer wall of the connecting rod (5) is slidably connected with a movable ring (8), the outer wall of the movable ring (8) is fixedly connected with two front-to-back distributed clamping blocks (9), the movable ring (8) and the outer wall of the low block (6) are both rotatably connected to two left-to-right distributed rotating rods (10) through a hinge seat, and the two upper and lower distributed rotating rods (10) are movably connected through an axis; The lower end surface of the top plate (1) is fixedly connected to a protective shell (11), the upper end surface of the movable plate (2) is fixedly connected to a plurality of evenly distributed first screw rods (12), the other end of the first screw rod (12) penetrates the protective shell (11) and the top plate (1) and extends to the top of the top plate (1), the lower end surface of the top plate (1) is rotatably connected to a rotating ring (13) threadedly connected to the first screw rod (12) and located inside the protective shell (11), and the outer wall of the rotating ring (13) is fixedly connected to a worm gear (14).

2. A sewer manhole cover lifting device according to claim 1, characterized in that: A worm (15) meshingly connected to a plurality of worm wheels (14) is rotatably connected inside the protective shell (11), and a motor (16) is installed on the right side wall of the protective shell (11), and an output end of the motor (16) is fixedly connected to the worm (15).

3. A sewer manhole cover lifting device according to claim 1, characterized in that: A second screw rod (17) threadedly connected to the two sliders (4) is rotatably connected inside the slide groove (3); one end of the second screw rod (17) extends to the outside of the movable plate (2) and is fixedly connected to a handle (18).

4. A sewer manhole cover lifting device according to claim 1, characterized in that: A spring (19) sleeved on the outer wall of the connecting rod (5) is fixedly connected between the inner lower end of the groove (7) and the lower end surface of the moving ring (8).

5. A sewer manhole cover lifting device according to claim 1, characterized in that: The lower end surface of the top plate (1) is fixedly connected to a plurality of evenly distributed supporting legs (20), and the lower end surface of the supporting legs (20) is fixedly connected to a universal wheel (21).

6. A sewer manhole cover lifting device according to claim 1, characterized in that: The other end of the first screw rod (12) is fixedly connected to a limiting block (22).

7. A sewer manhole cover lifting device according to claim 3, characterized in that: The second screw rod (17) is configured as a bidirectional screw rod.

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