Simple well lid opening device

Abstract

The utility model belongs to the technical field of well lid opening devices, and particularly discloses a simple well lid opening device. Comprising a lifting assembly, an expansion end and a hose. The lifting assembly comprises a lifting ring, a hand pulling type traction rope, a supporting rod and a push-pull ring, the lifting ring is connected with the hand pulling type traction rope, the push-pull ring is arranged on the hose in a sleeving mode, the bottom of the push-pull ring and the supporting rod are hinged together, and the expansion ends are connected with the two ends of the supporting rod. In the practical application, the end head is fixed on the inner side of the opening of the well lid through the lifting component, so that the well lid is opened, the well lid cannot fall off, and the upper part of the device is made of the hose, so that the force is more concentrated when the well lid is opened; the wrist of a user cannot be hurt, the device is suitable for long-time repeated work, the overall structure of the device is ingenious, and the manufacturing cost is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of manhole cover opening devices, and specifically discloses a simple manhole cover opening device. Background Art

[0002] During the renovation of rainwater and sewage mixed connections, it is necessary to repeatedly investigate the distribution of water pollution sources. During the investigation process, a hard cast iron hook is frequently used to open municipal manhole covers. This tool has a single force application direction when operating on concrete manhole covers and extra-thick cast iron manhole covers, with poor convenience. There is a risk of spraining the operator's wrist, and it is easy to fall off during the lifting process, causing personal injury.

[0003] The cable manhole cover lifting device with the patent application number CN201620221277.1 includes a main body. The main body includes a handle and a lifting rod vertically arranged below the handle. The handle is designed in a "return" shape. Both the handle and the lifting rod are hollow structures and are interconnected. A spring buckle mechanism for fixing the cable manhole cover is arranged inside the main body. The overall lifting rod of the above device is rigidly designed and difficult to adjust the direction of the lifting rod according to requirements. The force application direction is single when opening the manhole cover, and the manhole cover opening efficiency is low. Therefore, it is urgent for those skilled in the art to solve the above technical problems. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is that in the above-mentioned prior art, during the process of opening the manhole cover, the force application direction is single and it is difficult to open quickly, and the manhole cover is easy to fall off and cause danger.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A simple manhole cover opening device for opening and closing common rainwater and sewage manhole covers on municipal roads to improve the convenience of manhole cover opening, including a lifting assembly, an expansion end head, and a hose; the lifting assembly includes a lifting ring, a hand-pulled traction rope, a support rod, and a push-pull ring. The lifting ring is connected to the hand-pulled traction rope. The push-pull ring is sleeved on the hose. The bottom of the push-pull ring is hinged to the support rod. The expansion end head is connected to both ends of the support rod.

[0007] Furthermore, the expansion end head includes a connecting spring, a support plate, and a receiving plate. The bottoms of the receiving plates are hinged together. The inner wall of the receiving plate is welded with the support rod. A connecting spring connecting the two receiving plates is arranged below the support rod. Two support plates are welded to the top of the receiving plate.

[0008] Through the design of the lifting ring and hand-pull rope, the operator can apply force from multiple directions to open the manhole cover, which improves the opening efficiency. The connecting spring and the hinged receiving plate can ensure that the manhole cover will not fall off suddenly during the opening process, reducing safety hazards. The device can adapt to manhole covers of different sizes and types, improving its versatility. The opening of the manhole cover is achieved through simple mechanical principles, which reduces the skill requirements for the operator. The lightweight design makes it easy to carry and store, suitable for on-site operations, and due to the use of relatively simple structure and materials, the manufacturing cost is low, with good economic benefits.

[0009] Furthermore, the hand-pull traction rope is connected to the connecting spring.

[0010] The operator only needs to pull the hand-pull traction rope to control the retraction of the expansion end, which simplifies the operation process, does not require additional tools or complicated steps, and improves work efficiency. When taking out the expansion end, the expansion and bending of the spring can ensure that it will not be stuck in the manhole cover opening, reducing the risk of equipment damage. The operation of the hand-pull traction rope avoids direct contact with the manhole cover and reduces the possibility of injury to the operator. When not in use, the expansion end can be retracted to reduce its volume for easy storage and transportation. By adjusting the tension of the spring, it can adapt to manhole cover openings of different sizes, enhancing the applicability of the device. Using simple mechanical principles, it reduces manufacturing costs, is easy to maintain and repair, and reduces the cost of long-term use.

[0011] Furthermore, the maximum opening length of the expansion end is 3-5 cm, and the expansion end is made of stainless steel.

[0012] The design of a maximum opening length of 3-5 cm ensures that the expansion end can fit the pipe holes of most manhole covers, improving the versatility of the device. This size range is suitable for manhole cover openings of different diameters, ensuring the effective use of the device. Stainless steel has high corrosion resistance and strength, and can withstand long-term use without being easily damaged. The smooth surface of stainless steel reduces friction with the manhole cover opening and extends the service life. Stainless steel is easy to clean and maintain, which can reduce maintenance costs. The corrosion resistance means that even if used in harsh environments, it is not easy to rust or corrode. The high strength characteristics of stainless steel ensure the stability of the expansion end during use. Using stainless steel to make the expansion end helps to ensure that it is not easily deformed or damaged when under heavy pressure, thereby improving safety.

[0013] Furthermore, a positioning block is provided between the lifting ring and the hose, and the hose passes through the positioning block.

[0014] The positioning block can ensure that the hose maintains a stable position during use, preventing unnecessary movement or distortion of the hose during operation. This helps improve the precision of the operation, ensuring that the expansion end can be accurately placed in the manhole cover opening. The positioning block can limit the range of movement of the hose, increasing the stability of the entire system. This helps keep the hose straight during the lifting or pushing process, reducing the risk of accidental bending or breakage. The positioning block can reduce the friction between the hose and other components, especially in the case of frequent use, helping to extend the service life of the hose. Reducing friction can also reduce the noise during operation. By fixing the position of the hose with the positioning block, the operator can more easily control the lifting ring and the push-pull ring, improving the convenience of the operation. This helps improve work efficiency, especially in quickly opening the manhole cover in an emergency situation.

[0015] The utility model has the following beneficial effects:

[0016] Through the design of the positioning block between the lifting ring and the hose and the expansion end of the utility model, the operator can easily control the contraction and expansion of the expansion end, thus achieving the goal of quickly opening the manhole cover from multiple directions. In addition, the design of the connecting spring enables the expansion end to provide stable support during the opening process of the manhole cover, avoiding the danger caused by the sudden detachment of the manhole cover. The expansion end made of stainless steel has good corrosion resistance and strength, and can withstand the wear during long-term use. At the same time, the use of the positioning block reduces the friction and wear of the hose during operation, extends the service life of the hose, and ensures the overall stability and durability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural view of the utility model;

[0018] Figure 2 is the front view of the utility model;

[0019] Figure 3 is a schematic structural view of the expansion end of the utility model

[0020] Wherein, 1 - lifting assembly; 11 - lifting ring; 12 - hand-pulled traction rope; 13 - support rod; 14 - hose; 2 - push-pull ring; 3 - expansion end; 31 - connecting spring; 32 - support plate; 33 - receiving plate; 4 - positioning block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following further describes the utility model in detail with reference to the drawings and specific preferred embodiments.

[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "left side", "right side", "upper part", "lower part", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second", etc. do not represent the importance of the parts, so it cannot be understood as a limitation to the present utility model. The specific dimensions adopted in this embodiment are only for illustrating the technical solution by way of example and do not limit the protection scope of the present utility model.

[0023] Embodiment 1: When constructing a manhole cover, it is usually necessary to open the manhole cover to construct the bottom of the well. In the prior art when opening the cover, there are phenomena such as the manhole cover falling off and causing injuries to operators. Therefore, a simple manhole cover opening device is proposed. Referring to Figure 1 , Figure 2 and Figure 3 , it can be seen that a simple manhole cover opening device includes a lifting assembly 1 that constitutes the whole device. The lifting assembly 1 consists of a lifting ring 11 located at the top of the device and a hand-pulled traction rope 12 connecting the lifting ring 11. The hand-pulled traction rope 12 is sleeved in a hose 14, and a push-pull ring 2 is also sleeved at the bottom of the hose 14. Two support rods 13 are hinged at the bottom of the push-pull ring 2, and the other ends of the two support rods 13 are hinged on a bearing plate 33. A connecting spring 31 is also installed between the bearing plates 33. At the same time, a positioning block 4 is installed between the lifting ring 11 at the top and the hose 14, and the hose 14 passes through the positioning block 4;

[0024] When in use, place the expansion end 3 at the opening of the manhole cover and lift it upward through the lifting ring 11. The hand-pulled traction rope 12 is pulled accordingly, and the hand-pulled traction rope 12 drives the connecting spring 31 to bend. At this time, the opening distance of the bearing plate 33 of the expansion end 3 becomes smaller, so that the expansion end 3 is placed into the opening of the manhole cover. Release the lifting ring 11, and the bearing plate 33 expands the opening direction under the drive of the connecting spring 31. The expansion end 3 abuts against the inner wall of the manhole cover through the support plate 32. The support rods 13 hinged at the bottom of the connecting spring 31 and the push-pull ring 2 ensure that the manhole cover will not suddenly fall off during the opening process. The expansion end made of stainless steel enhances the durability and reliability of the device, improves the convenience and safety of opening the manhole cover: Through the positioning block 4 between the lifting ring 11 and the hose 14 and the design of the expansion end, the operator can easily control the contraction and expansion of the expansion end, thus achieving the goal of quickly opening the manhole cover from multiple directions. The expansion end made of stainless steel has good corrosion resistance and strength, and can withstand the wear during long-term use. By controlling the connecting spring 31 through the hand-pulled traction rope 12, the opening size of the expansion end can be simply controlled, thus realizing the quick opening of the manhole cover.

[0025] Embodiment 2: To accommodate manhole covers of more sizes, referring to Figure 3 , it can be seen that the maximum opening size of the expansion end 3 is 5 cm and the minimum is 3 cm. When the expansion end needs to be removed, pull the hand-pulled traction rope 12, causing the connecting spring 31 to bend. At the same time, lift the push-pull ring 2 upward, driving the support rod 13 to move, thereby changing the spacing of the bearing plate 31 until the expansion end 3 can be removed from the manhole cover hole. Safety: The connecting spring 31 and the hinged bearing plate 33 ensure that the manhole cover will not suddenly fall off during the opening process. The opening of the manhole cover is achieved through simple mechanical principles, reducing the skill requirements for operators. The expansion end 3 made of stainless steel enhances the durability and reliability of the device. Through the positioning block 4 between the lifting ring 11 and the hose 14 and the design of the expansion end 3, the operator can easily control the contraction and expansion of the expansion end 3, thus achieving the goal of quickly opening the manhole cover from multiple directions. The expansion end 3 made of stainless steel has good corrosion resistance and strength and can withstand wear during long-term use. Simplifying the operation process and improving work efficiency: By controlling the connecting spring 31 through the hand-pulled traction rope 12, the opening size of the expansion end 3 can be simply controlled, thus achieving the quick opening of the manhole cover.

[0026] Embodiment 3: A positioning block 4 is provided at the connection between the hose 14 and the lifting ring 11. The positioning block 4 is used to facilitate the operator to hold the entire device. The extreme distance of the push-pull ring 2 can abut against the positioning block 4. The positioning block 4 is located at the connection between the hose 14 and the lifting ring 11, providing a better holding point for the operator and facilitating the control of the entire device. The positioning block 4 serves as the extreme position of the movement of the push-pull ring 2, ensuring that the push-pull ring 2 will not exceed the predetermined range, thereby avoiding device damage or operation errors. The positioning block 4 is designed as a block structure with a certain thickness and width for easy hand holding. The positioning block 4 is installed at the connection between the hose 14 and the lifting ring 11 to ensure that the operator can easily hold the positioning block 4 for operation. The positioning block 4 can be made of wear-resistant and non-slip materials such as plastic or rubber to provide a good hand feeling and anti-slip performance. When using the device, the operator can stabilize the entire device by holding the positioning block 4. Especially when it is necessary to lift or push-pull the hose 14, the positioning block 4 provides a better gripping point. When the push-pull ring 2 moves up or down to the extreme position, it can abut against the positioning block 4, thereby preventing excessive movement and ensuring the stability and safety of the device. The operator first holds the positioning block 4 to ensure stable control of the entire device. By pulling the lifting ring 11 upward or moving the hose 14 up and down through the push-pull ring 2, the expansion or contraction of the expansion end 3 is achieved. When the push-pull ring 2 moves to the extreme position and abuts against the positioning block 4, the opening size at the top of the bearing plate 33 of the expansion end 3 is 3 cm, facilitating the removal of the device from the inside of the manhole cover.

[0027] The preferred embodiments of the present utility model have been described in detail above. However, the present utility model is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present utility model, various equivalent transformations can be made to the technical solutions of the present utility model, and these equivalent transformations all fall within the protection scope of the present utility model.

Claims

1. A simple manhole cover opening device is used for opening and closing the rain and sewage manhole covers commonly seen on municipal roads to improve the convenience of opening the manhole covers. It is characterized in that: It includes a lifting component, an expansion end head and a hose; the lifting component (1) includes a lifting ring (11), a hand-pulled towing rope (12), a support rod (13) and a push-pull ring (2), the lifting ring (11) is connected to the hand-pulled towing rope (12), the push-pull ring (2) is sleeved on the hose (14), the bottom of the push-pull ring (2) is hinged to the support rod (13), and the expansion end head (3) is connected to both ends of the support rod (13).

2. The simple manhole cover opening device according to claim 1, characterized in that: The expansion end head (3) includes a connecting spring (31), a support plate (32) and a bearing plate (33), the bottoms of the bearing plates (33) are hinged together, the support rod (13) is welded to the inner wall of the bearing plate (33), a connecting spring (31) connecting both sides of the bearing plate (33) is arranged below the support rod (13), and two support plates (32) are welded to the top of the bearing plate (33).

3. The simple manhole cover opening device according to claim 2, characterized in that: The hand-pulled towing rope (12) is connected to the connecting spring (31).

4. The simple manhole cover opening device according to claim 1, characterized in that: The maximum opening length of the expansion end head (3) is 3 - 5 cm, and the expansion end head (3) is made of stainless steel.

5. The simple manhole cover opening device according to claim 4, characterized in that: A positioning block (4) is further arranged between the lifting ring (11) and the hose (14), and the hose (14) passes through the positioning block (4).

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