Stable anti-falling well lid opener

Abstract

The utility model relates to the technical field of well lid opening, and particularly discloses a stable anti-falling well lid opener which comprises a well lid body and a fixing sleeve, and a lifting hole is formed in the well lid body; one end of the fixing sleeve is installed in the lifting hole in a penetrating mode, a check block is arranged at the lower end of the fixing sleeve and makes contact with the well lid body, and a fixing block is fixedly connected to the check block; a clamping mechanism used for being fixed to the well lid body is arranged in the fixing sleeve. The technical problem that in the opening process, due to long-time use and improper maintenance of a common well hook, the risk that a well lid falls off and hurts people exists is solved.

Description

Technical Field

[0001] This utility model relates to the field of manhole cover opening technology, and specifically discloses a stable anti-fall-off manhole cover opener. Background Technology

[0002] Traditional manhole covers, as an important part of urban infrastructure, are generally made of cast iron or concrete, which have high load-bearing capacity and durability. However, manhole covers are currently quite heavy and rely on manual pry bars or multiple people to lift them, which requires a lot of physical strength from the operators. Furthermore, long-term exposure to a humid environment can easily lead to corrosion of metal parts. Mud and debris can easily accumulate on the contact surface between the manhole cover and the manhole seat, further increasing frictional resistance and even causing complete jamming, making it difficult to open the manhole cover.

[0003] Currently, metal hooks with a fixed shape are used to open manhole covers during inspections. The angle between the hook and the hook body is 90°. Each time the manhole is opened, the hook must be inserted into the lifting hole of the manhole cover. During the opening process, the hooks often come off due to prolonged use and improper maintenance, such as the hook angle being greater than a right angle or the inner surface of the manhole cover being slippery. This poses a risk of the manhole cover falling off and injuring people. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a stable anti-fall-off manhole cover opener to solve the technical problem that common manhole hooks pose a risk of manhole cover falling off and injuring people during the opening process due to long-term use and improper maintenance.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a stable, anti-fall-off manhole cover opener, comprising a manhole cover body and a fixing sleeve, wherein the manhole cover body has a lifting hole; one end of the fixing sleeve is inserted into the lifting hole, and a stop block is provided at the lower end of the fixing sleeve, the stop block contacting the manhole cover body, and a fixing block is fixedly connected to the stop block; a clamping mechanism for fixing to the manhole cover body is provided inside the fixing sleeve. By inserting one end of the fixing sleeve into the lifting hole and fixing the fixing sleeve to the manhole cover body through the clamping mechanism, it is convenient for workers to lift the manhole cover body, while effectively preventing the manhole cover body from falling off and injuring people.

[0006] Furthermore, the clamping mechanism includes a first movable column, which is slidably fitted into the fixed sleeve. The first movable column has two sets of first fixing grooves, each containing a hinge seat. Each hinge seat has a second mating block hinged to it, and the second mating block is slidably fitted into the first fixing groove. The two sets of second mating blocks on the clamping mechanism are rotatable, forming a T-shape with the first movable column. This prevents the manhole cover from falling off and allows workers to open the manhole cover more quickly without worrying about it falling off.

[0007] Furthermore, the clamping mechanism also includes a second movable column, which is slidably engaged within the first movable column. A first mating block is fixedly connected to one end of the second movable column, and the first mating block is slidably engaged on the first movable column, positioned between two sets of second mating blocks. A rope is provided between the second mating block and the first movable column. The rope allows the second mating block to be moved to its initial position without affecting its opening, enabling a clever engagement with the second mating block.

[0008] Furthermore, one end of the second movable column is provided with a fixed column, a locking column, and a push block. Both the fixed sleeve and the first movable column have first sliding grooves. The fixed column is slidably engaged within two sets of the first sliding grooves. A locking block is fixedly connected to the fixed sleeve, and the locking column is engaged within the locking block. The locking column and the locking block cooperate to fix the fixed column, the locking column, and the push block, thereby ensuring that the clamping mechanism will not move when not in use.

[0009] Furthermore, a limiting block is fixedly connected to one end of the first movable column, and a limiting groove is formed on the fixed sleeve. The limiting block is slidably engaged in the limiting groove. The limiting block and the limiting groove cooperate to ensure that after the second mating column is moved out of the fixed sleeve, the second mating column can unfold and hook the manhole cover body.

[0010] Furthermore, a handle is fixedly connected to the fixed sleeve.

[0011] The working principle and beneficial effects of this solution are as follows:

[0012] In use, the operator first inserts one end of the fixing sleeve into the lifting hole. Then, the operator moves the push block, which first moves the second mating block and the first movable column downwards in the fixing sleeve. When the second mating block is completely separated from the fixing sleeve, the two sets of second mating blocks rotate around the hinge seat. At this time, the two sets of second mating blocks and the first movable column form a T-shape. The operator can then open the manhole cover body by pulling the handle. At this time, the fixing sleeve will not separate from the manhole cover body, which can prevent the manhole cover from falling off and make it easier for the operator to open the manhole cover body.

[0013] Once the manhole cover is opened, the worker moves the push block upwards. The push block, through the second movable column, moves one end of the rope upwards, and the other end of the rope moves the second mating block around the hinge seat, causing the second mating block to move to its initial position. Then, the worker continues to move the first movable column and the second mating block upwards, returning them to their initial state. This allows the worker to separate the fixing sleeve from the manhole cover.

[0014] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0016] Figure 2 Exploded view of an embodiment;

[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0019] Figure 5 This is a cross-sectional schematic diagram of an embodiment;

[0020] Figure 6 for Figure 5 Enlarged diagram of point C in the middle.

[0021] The following are the markings in the attached diagram: 1. Manhole cover body; 2. Lifting hole; 3. Fixing sleeve; 4. Handle; 5. First movable column; 6. Second movable column; 7. Fixing column; 8. Locking column; 9. Push block; 10. First sliding groove; 11. Locking block; 12. First mating block; 13. Second sliding groove; 14. First fixing groove; 15. Hinge seat; 16. Second mating block; 17. Rope; 18. Second fixing groove; 19. Stop block; 20. Fixing block; 21. Limiting block; 22. Limiting groove. Detailed Implementation

[0022] The following detailed description illustrates the specific implementation method:

[0023] Example

[0024] like Figures 1 to 6 As shown, a stable anti-fall-off manhole cover opener is disclosed, including a manhole cover body 1 and a fixing sleeve 3. The manhole cover body 1 has a lifting hole 2. One end of the fixing sleeve 3 is fixedly connected to a handle 4. The other end of the fixing sleeve 3 is inserted into the lifting hole 2 and is fixedly connected to a stop block 19. The fixing sleeve 3 is partially located in the lifting hole 2. The stop block 19 is in contact with the manhole cover body 1. A fixing block 20 is fixedly connected to the stop block 19.

[0025] The fixed sleeve 3 is equipped with a locking mechanism, which includes a first movable post 5. A limit block 21 is provided on the first movable post 5. A limit groove 22 is formed inside the fixed sleeve 3. The limit block 21 is slidably locked into the limit groove 22. The first movable post 5 is slidably locked into the fixed sleeve 3. The first movable post 5 penetrates the fixed sleeve 3 and is of equal length to the fixed sleeve 3. A second movable post 6 is slidably locked inside the first movable post 5. One end of the second movable post 6 is fixedly connected to a fixed post 7, a locking post 8, and a pusher. Block 9, fixing post 7, locking post 8 and push block 9 are all perpendicular to the second movable post 6. The fixing sleeve 3 and the first movable post 5 are each provided with a first sliding groove 10. The two sets of first sliding grooves 10 are aligned. The length of the first sliding groove 10 is greater than the length of the limiting groove 22. The fixing post 7 is slidably locked on the two sets of first sliding grooves 10. A locking block 11 is provided above the first sliding groove 10. The locking block 11 is made of plastic and has a certain elasticity. The locking post 8 is locked in the locking block 11. The push block 9 is made of rubber.

[0026] The other end of the second movable column 6 is fixedly connected to the first mating block 12. The first movable column 5 is provided with a second sliding groove 13 and two sets of first fixing grooves 14. The second sliding groove 13 is located between the two sets of first fixing grooves 14. The two sets of first fixing grooves 14 are connected through the second sliding groove 13. The first mating block 12 is slidably engaged in the second sliding groove 13. A hinge seat 15 is fixedly connected in each of the two sets of first fixing grooves 14. A second mating block 16 is hinged on each of the two sets of hinge seats 15. The two sets of second mating blocks 16 are slidably engaged in the two sets of first fixing grooves 14 respectively. The first mating block 12 is located between the two sets of second mating blocks 16. A rope 17 is fixedly connected to each of the two sets of second mating blocks 16. The other end of each of the two sets of ropes 17 is fixedly connected to the second movable column 6. The first movable column 5 is provided with a second fixing groove 18. The rope 17 is located in the second fixing groove 18.

[0027] In practice

[0028] In use, the operator first inserts one end of the fixing sleeve 3 into the lifting hole 2 until the stop block 19 contacts the manhole cover body 1. Then, the operator moves the push block 9 downward. At this time, since both sets of second mating blocks 16 are located inside the fixing sleeve 3, when the push block 9 moves downward, it drives the locking pin 8, the fixing pin 7, and the first mating block 12 to move downward. The first mating block 12 drives the two sets of second mating blocks 16 and the first movable pin 5 to move downward within the fixing sleeve 3. When the push block 9 drives the locking pin 8 downward, it first drives the locking pin 8 to separate from the locking block 11. At this time, the fixing between the locking block 11 and the locking pin 8 is released. Then, the push block 9 continues to move downward, and the first movable pin 5 slides within the fixing sleeve 3. The limiting block 21 slides within the limiting groove 22 until the second mating block 16 and the first movable pin... 5. Separation: At this time, the limiting block 21 moves to one end of the limiting groove 22, and the rope 17 moves out of the second fixed groove 18. At this time, the first movable column 5 can no longer move within the fixed sleeve 3, but the fixed column 7 can still move downward within the first sliding groove 10. At this time, the second movable column 6 continues to move downward, and the second movable column 6 drives the first mating block 12 to move downward. At this time, the first mating block 12 slides within the second sliding groove 13. The first mating block 12 causes the two sets of second mating blocks 16 to rotate around the hinge seat 15 until the second mating block 16 and the first movable column 5 change from a parallel state to a perpendicular state. At this time, the two sets of second mating blocks 16 and the first movable column 5 form a T-shape. At the same time, the fixed column 7 moves to one end of the first sliding groove 10. Then, the worker pulls the handle 4 to open the manhole cover body 1.

[0029] When the worker opens the manhole cover body 1, there is a gap between the second mating block 16 and the manhole cover body 1. Therefore, the worker will move the fixing sleeve 3 and the clamping mechanism upward as a whole until the second mating block 16 contacts the manhole cover body 1. At this time, the stop block 19 separates from the manhole cover body 1. The worker can then press down the handle 4 to make the fixing sleeve 3 rotate around the lifting hole 2 until the fixing block 20 contacts the manhole cover body 1. This forms a simple fixation, which makes it easy for the worker to open the manhole cover body 1 and ensures that the clamping mechanism will not shake on the manhole cover body 1.

[0030] After the manhole cover body 1 is opened, the operator needs to separate the clamping mechanism from the manhole cover body 1. At this time, the operator moves the push block 9 upward, which drives the clamping post 8, the fixed post 7, the first movable post 5, and the first mating block 12 to move upward. The second movable post 6 drives one end of the rope 17 to move upward, and the other end of the rope 17 drives the second mating block 16 to rotate around the hinge seat 15. At this time, the first mating block 12 slides in the second sliding groove 13. When the first mating block 12 moves to the top of the second sliding groove 13, the second mating block 16 is completely located in the first fixed groove 14. Then it continues to move upward, and the second movable post 6 moves completely into the first movable post 5. Then it drives the first movable post 5 to move upward, and the limiting block 21 slides in the limiting groove 22 until the clamping post 8 is clamped in the clamping block 11. At this time, the clamping mechanism returns to its initial state.

[0031] The above description is merely an embodiment of this utility model, and common knowledge such as specific structures and characteristics in the solution is not described in detail here. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model, and these should also be considered within the protection scope of this utility model. These modifications and improvements will not affect the effectiveness of the implementation of this utility model or its practicality.

Claims

1. A stable, anti-fall-off manhole cover opener, characterized in that: It includes a manhole cover body and a fixing sleeve, wherein the manhole cover body has a lifting hole; One end of the fixing sleeve is inserted into the lifting hole, and a stop block is provided at the lower end of the fixing sleeve. The stop block is in contact with the manhole cover body, and a fixing block is fixedly connected to the stop block. The fixing sleeve is provided with a clamping mechanism for fixing it to the manhole cover body.

2. The stable anti-fall-off manhole cover opener according to claim 1, characterized in that: The clamping mechanism includes a first movable column, which is slidably clamped in the fixed sleeve. The first movable column has two sets of first fixed grooves, and each of the two sets of first fixed grooves is fixedly connected to a hinge seat. Each of the two sets of hinge seats is hinged to a second mating block, and the second mating block is slidably clamped in the first fixed groove.

3. The stable anti-fall-off manhole cover opener according to claim 2, characterized in that: The clamping mechanism further includes a second movable column, which is slidably fitted into the first movable column. One end of the second movable column is fixedly connected to a first mating block, which is slidably fitted onto the first movable column. The first mating block is located between two sets of second mating blocks. A rope is provided between the second mating block and the first movable column.

4. The stable anti-fall-off manhole cover opener according to claim 3, characterized in that: The second movable column is provided with a fixed column, a locking column and a push block at one end. The fixed sleeve and the first movable column are both provided with a first sliding groove. The fixed column is slidably locked in the two sets of the first sliding grooves. A locking block is fixedly connected to the fixed sleeve, and the locking pin is fitted into the locking block.

5. The stable anti-fall-off manhole cover opener according to claim 4, characterized in that: One end of the first movable column is fixedly connected to a limiting block, and a limiting groove is formed on the fixed sleeve, with the limiting block slidably engaged in the limiting groove.

6. The stable anti-fall-off manhole cover opener according to claim 5, characterized in that: A handle is fixedly connected to the fixed sleeve.

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