An explosion-proof tool for quickly opening natural gas valve well covers

Abstract

This utility model relates to an explosion-proof tool for quickly opening natural gas valve well covers, comprising a lifting component, a hammer, and a hook. The hook is rotatably mounted on the lower end of the lifting component for hooking the well cover; the hammer is sleeved on the lifting component and can slide up and down. The advantages of this utility model are its simple structure and reasonable design. This tool enables rapid opening of well covers, saving time and effort, and it is explosion-proof, labor-saving, and portable.

Description

Technical Field

[0001] This utility model relates to the field of natural gas valve well technology, specifically to an explosion-proof tool for quickly opening the cover of a natural gas valve well. Background Technology

[0002] Currently, there is a wide variety of manhole cover opening tools, ranging from small, simple hooks to large hydraulic tools. With the continuous improvement of urban construction and transportation networks, the number of underground pipe networks and various types of manholes is increasing year by year, and there is a growing emphasis on the safety and reliability of urban infrastructure. Manhole cover opening tools are developing towards greater safety and efficiency. In the future, with the continuous expansion of urban scale and the gradual increase in operational pressure, the demand for manhole cover opening tools will further increase.

[0003] Whether it's a town gas company or other municipal enterprise, they all have a need for fireproof and explosion-proof manhole covers. Furthermore, depending on the location of the manhole, the materials used for manhole covers vary widely, such as metal manhole covers (cast iron, ductile iron, bronze, etc.); high-strength steel fiber reinforced concrete manhole covers (cement-based composite materials); recycled resin manhole covers (recycled resin-based composite materials); and polymer-based composite manhole covers.

[0004] With the increasing prevalence of urban gas pipelines, natural gas valve wells, as an important component of the pipeline system, are characterized by complex locations and diverse materials. The inclusion of drainage ditches and wells near natural gas pipelines under management further complicates the opening and maintenance of these wells, posing significant challenges to maintenance personnel. The frequent need for valve well opening and maintenance, coupled with the weight and difficulty in opening the well covers, presents particular challenges.

[0005] 1. Municipal cable wells, communication wells, fire wells, water supply and drainage wells, etc., due to long-term lack of operation, the well cover and well cover seat are corroded, making it difficult to open, or foreign objects enter the gap between the well cover and well cover seat, jamming the well cover and making it impossible to open.

[0006] 2. In northern winters, after the snow melts, it freezes back onto ice, freezing manhole covers together. Opening these covers is extremely difficult; even using crowbars, hammers, or other tools fails, and there is a risk of injury during the process. Especially in emergency situations, if frozen manhole covers cannot be opened promptly and appropriate measures are not taken, it will negatively impact the effectiveness of emergency response.

[0007] Therefore, there is an urgent need for a tool that can quickly, safely, and effortlessly open valve well covers to improve work efficiency, reduce the workload of workers, and ensure the safety and reliability of the operation process.

[0008] Chinese Patent CN113023635A discloses a manhole cover opener, comprising: a lever, a support assembly, a hook assembly, and a drive assembly. The support assembly includes a triangular bracket and a fixed support, with the fixed support rotatably connected to the top of the triangular bracket. One end of the lever is hinged to the fixed support, and the lever rotates up and down around the hinge point. The hook assembly includes a hook slider sleeved on the lever, sliding along the length of the lever. Two chains are connected to the hook slider, with lifting hooks connected to the ends of the two chains furthest from the hook slider. The drive assembly includes a hydraulic mounting base, a hydraulic jack, and a drive slider. The drive slider is sleeved on the lever and located on the side of the hook slider furthest from the fixed support. The hydraulic jack is positioned on top of the hydraulic mounting base, with its output end connected to the drive slider. Several casters are provided at the bottom of the hydraulic mounting base. This invention has the advantages of simple and quick operation, convenient use, and time-saving and labor-saving manhole cover opening.

[0009] In addition, Chinese patent CN112239188A discloses a manhole cover opening machine, which includes support legs, a crossbeam, a jack, and a pulling device. The support legs and jack are vertically arranged. One end of the crossbeam is hinged to the top of the support leg, and the other end of the crossbeam is connected to the top of the piston rod of the jack via a connector. A long hole is vertically opened in the middle of the crossbeam along its length. The top of the pull rod of the pulling device moves through the long hole. Nuts that move and abut against the crossbeam are screwed onto the pull rods above and below the crossbeam. Advantages: Through the cooperation of the support legs, crossbeam, jack, and pulling device, the manhole cover can be opened quickly and efficiently. The contact between the pulling device and the manhole cover is static, eliminating sparks and safety hazards. The unique design of the pulling device enables the manhole cover to be quickly engaged, further realizing fast and efficient operation.

[0010] Furthermore, Chinese patent CN107893433A discloses a manhole cover opener, including a handle, a pull rod connected to the handle, and a hook at the lower end of the pull rod. The key feature is that a spring and a rotating component are sleeved on the pull rod. The rotating component has a polygonal prism-shaped outer contour. When the handle is rotated, the manhole cover opener moves synchronously with the pull rod in a circular motion, thus unlocking and locking the manhole cover locking mechanism. When the manhole cover is unlocked, the rotating component moves up and down along the pull rod as the manhole cover pops up. A baffle is provided on the pull rod, and the spring is engaged between the rotating component and the baffle. Its advantages are: unique structure, diverse functions, and full integration of unlocking, hooking, and elastic blocking functions. It can be well applied to automatic pop-up manhole covers, saving time and effort and facilitating the daily equipment inspection needs of municipal personnel.

[0011] Although the aforementioned manhole cover opening devices can all achieve rapid opening of manhole covers, the existing natural gas manhole cover opening tools are divided into two categories: simple manhole cover hooks are easily damaged and require frequent replacement; labor-saving manhole cover opening tools are too large and difficult to carry. Utility Model Content

[0012] This invention provides an explosion-proof tool for quickly opening the cover of a natural gas valve well, aiming to address the problems in the existing technology.

[0013] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0014] An explosion-proof tool for quickly opening a natural gas valve well cover includes a lifting component, a hammer, and a hook. The hook is rotatably mounted on the lower end of the lifting component for hooking the well cover. The hammer is sleeved on the lifting component and can slide up and down.

[0015] The beneficial effects of this utility model are: during use, the hammer slides up and down on the lifting member in a way that can be conceived by those skilled in the art to impact the lifting member. The vibration generated by the impact is transmitted to the manhole cover through the hook, which eventually loosens the manhole cover and makes it easy to open. Then, the hook and the manhole cover are lifted by the lifting member. The operation is simple and the manhole cover can be opened quickly.

[0016] This utility model has a simple structure and reasonable design. The tool can quickly open the manhole cover, saving time and effort. In addition, the tool is explosion-proof, labor-saving and portable.

[0017] Based on the above technical solution, the present invention can be further improved as follows.

[0018] Furthermore, the lifting component includes a sliding rod and a base. The sliding rod is vertically arranged, and the punch is slidably sleeved on the sliding rod. The base is fixedly installed at the lower end of the sliding rod, and the hook is rotatably installed at the lower end of the base.

[0019] The beneficial effect of adopting the above-mentioned further solution is that during use, the hammer can slide up and down on the slide bar in a way that can be conceived by those skilled in the art to impact the slide bar. The vibration generated by the impact is transmitted to the manhole cover through the hook, which finally loosens and opens the manhole cover. The operation is simple and can realize the rapid opening of the manhole cover.

[0020] Furthermore, a boss is fixedly installed on the upper end of the base, and the boss is fixedly sleeved on the lower end of the slide rod.

[0021] The advantages of adopting the above-mentioned further solution are that the structure is simple and the design is reasonable. The protrusion is set so that the punch hits the protrusion during the up and down sliding process, avoiding direct impact between the punch and the base, extending the service life of the protrusion and reducing costs.

[0022] Furthermore, the lower end of the base is provided with a groove, and one end of the hook extends into the groove and is rotatably connected to the groove.

[0023] The advantages of adopting the above-mentioned further solution are that the structure is simple, the groove design on the base is reasonable, and it is easy to assemble the hook.

[0024] Furthermore, a pair of insertion holes are provided opposite each other on the groove wall of the groove, and a pin is inserted into the pair of insertion holes; one end of the hook is rotatably sleeved on the pin.

[0025] The advantages of adopting the above-mentioned further solution are that the structure is simple and the design is reasonable. The hook uses a pin to achieve a rotating connection with the lower end of the base, which increases the flexibility of the hook and makes it easier to hook the manhole cover.

[0026] Furthermore, the slide bar is a cylindrical rod.

[0027] The advantages of adopting the above-mentioned further solution are that the structure is simple, the shape of the slide bar is reasonably designed, and it is convenient for the hammer to slide up and down on the slide bar so as to impact the manhole cover and realize the rapid opening of the manhole cover.

[0028] Furthermore, a buffer spring is slidably sleeved on the slide rod, and the two ends of the buffer spring abut against the base and the impact hammer, respectively.

[0029] The advantages of adopting the above-mentioned further scheme are that the structure is simple and the design is reasonable. A buffer spring is set between the hammer and the hook, and the hammer principle is used to loosen the manhole cover to achieve the purpose of saving effort.

[0030] Furthermore, a protruding ring is fixedly fitted onto the slide rod, and the protruding ring is located above the punch.

[0031] The advantages of adopting the above-mentioned further solution are that the structure is simple, the setting of the convex ring is more reasonable, and the convex ring can be used to limit the movement of the punch.

[0032] Furthermore, a handle is fixedly connected to the upper end of the slide rod.

[0033] The advantages of adopting the above-mentioned further solution are that it has a simple structure, reasonable design, and is easy to operate with a handle, saving time and effort.

[0034] Furthermore, the handle has an inverted triangular structure, with one corner at its bottom fixedly connected to the upper end of the slide rod.

[0035] The advantages of adopting the above-mentioned further solution are that the structure is simple, the shape of the handle is reasonably designed, which is convenient for assembly and operation, and saves time and effort.

[0036] Furthermore, a shoulder strap is attached to the hammer.

[0037] The advantages of adopting the above-mentioned further solution are that the structure is simple and the design is reasonable. The shoulder strap design is easy to adapt to workers of different body types, and the shoulder strap design makes it easy to drive the hammer to impact up and down, thereby realizing the rapid opening of the manhole cover.

[0038] Furthermore, two loops are fixedly installed on the punch, and the two ends of the shoulder strap are respectively connected to the two loops.

[0039] The advantages of adopting the above-mentioned further solution are that the structure is simple and the design is reasonable. The design of the two tie rings makes it easy to connect the shoulder strap so as to carry out the corresponding operations, realize the quick opening of the manhole cover, and save time and effort.

[0040] Furthermore, the hook has an arc-shaped structure.

[0041] The advantages of adopting the above-mentioned further solution are that the structure is simple, the hook adopts an arc-shaped structure which is more reasonable, easy to assemble, and easy to hook the manhole cover.

[0042] Furthermore, the hook has an inverted T-shaped structure.

[0043] The advantages of adopting the above-mentioned further solution are that the structure is simple, the hook adopts a T-shaped structure which is more reasonable, easy to assemble, and easy to hook the manhole cover. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the present invention;

[0045] Figure 2 This is a schematic diagram of the overall structure of the second embodiment of the present invention;

[0046] Figure 3 This is a schematic diagram of the structure of the present invention when the hook is not assembled;

[0047] Figure 4 This is an assembly drawing of the slide bar and handle in this utility model;

[0048] Figure 5 This is a schematic diagram of the structure of the punch hammer of this utility model;

[0049] Figure 6 This is a schematic diagram of the base structure in this utility model;

[0050] Figure 7 This is a schematic diagram of the structure of one type of hook in this utility model;

[0051] Figure 8 This is a schematic diagram of the shoulder strap structure in this utility model.

[0052] The attached diagram lists the components represented by each number as follows:

[0053] 1. Hook; 2. Pin; 3. Tie ring; 4. Buffer spring; 5. Punch; 6. Slide bar; 7. Handle; 8. Shoulder strap; 9. Base; 10. Boss; 11. Plug. Detailed Implementation

[0054] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0055] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0056] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0057] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0058] Example 1

[0059] like Figures 1 to 8 As shown, this embodiment provides an explosion-proof tool for quickly opening a natural gas valve well cover, including a lifting component, a hammer 5, and a hook 1. The hook 1 is rotatably mounted on the lower end of the lifting component for hooking the well cover; the hammer 5 is sleeved on the lifting component and can slide up and down.

[0060] During use, the hammer 5 slides up and down on the lifting member in a way that can be conceived by those skilled in the art to impact the lifting member. The vibration generated by the impact is transmitted to the manhole cover through the hook 1, which eventually loosens the manhole cover and makes it easy to open. Then, the hook and the manhole cover are lifted by the lifting member. The operation is simple and the manhole cover can be opened quickly.

[0061] This embodiment has a simple structure and reasonable design. This tool can quickly open manhole covers, saving time and effort. In addition, the tool is explosion-proof, labor-saving and portable.

[0062] Example 2

[0063] Based on Embodiment 1, in this embodiment, the lifting component includes a slide rod 6 and a base 9. The slide rod 6 is vertically arranged, and the punch 5 is slidably sleeved on the slide rod 6. The base 9 is fixedly installed at the lower end of the slide rod 6, and the hook 1 is rotatably installed at the lower end of the base 9.

[0064] During use, the hammer 5 slides up and down on the slide bar 6 in a way that can be conceived by those skilled in the art to impact the slide bar 6. The vibration generated by the impact is transmitted to the manhole cover through the hook 1, which eventually loosens and opens the manhole cover. The operation is simple and can realize the rapid opening of the manhole cover.

[0065] Example 3

[0066] Based on Embodiment 2, in this embodiment, a boss 10 is fixedly installed on the upper end of the base 9, and the boss 10 is fixedly sleeved on the lower end of the slide rod 6.

[0067] The solution has a simple structure and reasonable design. The protrusion 10 is set so that the punch 5 hits the protrusion 10 during the up and down sliding process, avoiding direct impact between the punch 5 and the base 9, extending the service life of the protrusion 10 and reducing costs.

[0068] Preferably, in this embodiment, the boss 10 is made of a wear-resistant material, such as wear-resistant high-chromium cast iron, wear-resistant alloy steel, or polymer wear-resistant material.

[0069] Preferably, in this embodiment, the base 9 is preferably cylindrical.

[0070] In addition, the aforementioned boss 10 is preferably of annular structure.

[0071] Based on the above solution, as the usage time increases, the boss 10 can be manually replaced when it wears out.

[0072] Example 4

[0073] Based on any one of Embodiments 2 to 3, in this embodiment, the lower end of the base 9 is provided with a groove, and one end of the hook 1 extends into the groove and is rotatably connected to the groove.

[0074] The design is simple, and the groove on the base 9 is reasonably designed to facilitate the assembly of the hook.

[0075] Preferably, in this embodiment, the groove is a circular groove with a depth that accounts for 1 / 3 of the height of the base 9.

[0076] In addition, the grooves mentioned above are preferably coaxially distributed with the base 9, but they can also be distributed non-axially.

[0077] Example 5

[0078] Based on embodiment 4, in this embodiment, a pair of insertion holes are provided opposite to each other on the groove wall of the groove, and a pin 2 is inserted into the pair of insertion holes; one end of the hook 1 is rotatably sleeved on the pin 2.

[0079] The scheme has a simple structure and reasonable design. The hook 1 uses the pin 2 to achieve a rotating connection with the lower end of the base 9, which increases the flexibility of the hook 1 and makes it easier to hook the manhole cover.

[0080] Preferably, in this embodiment, one end of the hook 1 is provided with a through hole, and the pin 2 passes through the through hole.

[0081] Example 6

[0082] Based on any one of Embodiments 2 to 5, in this embodiment, the slide rod 6 is a cylindrical rod.

[0083] The design is simple, and the shape of the slide bar 6 is reasonably designed, which facilitates the up-and-down sliding motion of the hammer 5 on the slide bar 6 to impact the manhole cover and achieve rapid opening of the manhole cover.

[0084] Preferably, in this embodiment, the hammer 5 is preferably annular, with its inner diameter slightly larger than the diameter of the slide rod 6, to ensure that the hammer 5 can slide back and forth on the slide rod 6.

[0085] Alternatively, the slide bar 6 can also adopt other suitable geometric shapes, such as rectangular, triangular or hexagonal cross-sections. In this case, the punch 5 can be provided with an inner hole that matches the slide bar 6.

[0086] Example 7

[0087] Based on Example 6, in this example, a buffer spring 4 is slidably sleeved on the slide rod 6, and the two ends of the buffer spring 4 abut against the base 9 and the punch 5 respectively.

[0088] The scheme has a simple structure and reasonable design. A buffer spring 4 is installed between the hammer 5 and the hook 1. The hammer 5 is used to loosen the manhole cover to save effort.

[0089] Preferably, in this embodiment, the two ends of the buffer spring 4 abut against the boss 10 and the punch 5, respectively.

[0090] Example 8

[0091] Based on Example 7, in this example, a protruding ring 11 is also fixedly sleeved on the slide rod 6, and the protruding ring 11 is located above the punch 5.

[0092] The design is simple and the convex ring 11 is reasonably designed. The convex ring 11 can be used to limit the movement of the punch 5.

[0093] Preferably, in this embodiment, the convex ring 11 is preferably a circular ring structure adapted to the shape of the slide bar 6.

[0094] Alternatively, the aforementioned convex ring 11 can also adopt other suitable geometric shapes, such as rectangular, triangular or hexagonal cross-sections. In this case, an inner hole with a shape that matches the slide rod 6 can be provided inside the aforementioned convex ring 11.

[0095] Example 9

[0096] Based on any one of Embodiments 2 to 8, in this embodiment, a handle 7 is fixedly connected to the upper end of the slide bar 6.

[0097] The solution has a simple structure and reasonable design. The handle 7 makes it easy to operate, saving time and effort.

[0098] Example 10

[0099] Based on embodiment 9, in this embodiment, the handle 7 has an inverted triangular structure, and one corner of its bottom is fixedly connected to the upper end of the slide rod 6.

[0100] The solution has a simple structure and the shape of the handle 7 is reasonably designed, which is easy to assemble and operate, saving time and effort.

[0101] Alternatively, the handle 7 described above can also be a T-shaped rod or a circular rod.

[0102] Example 11

[0103] Based on the above embodiments, in this embodiment, the punch 5 is fitted with a shoulder strap 8.

[0104] The solution has a simple structure and a reasonable design. The design of the shoulder strap 8 is suitable for workers of different body types, and the design of the shoulder strap 8 makes it easy to drive the hammer 5 to impact up and down, thereby realizing the rapid opening of the manhole cover.

[0105] Preferably, in this embodiment, the shoulder strap 8 is preferably a flexible strap to increase the comfort of the worker's shoulders.

[0106] Example 12

[0107] Based on Example 11, in this example, two loops 3 are fixedly installed on the hammer 5, and the two ends of the shoulder strap 8 are respectively connected to the two loops 3.

[0108] The scheme has a simple structure and reasonable design. The design of the two tie rings 3 makes it easy to connect the shoulder strap 8 so as to carry out the corresponding operations and realize the quick opening of the manhole cover, saving time and effort.

[0109] Preferably, in this embodiment, the two connecting rings 3 are respectively circular ring structures.

[0110] In addition, the two tie rings 3 are vertically arranged and fixedly connected to the hammer 5.

[0111] Example 13

[0112] Based on any one of Embodiments 1 to 12, in this embodiment, the hook 1 has an arc-shaped structure.

[0113] The scheme has a simple structure. The arc-shaped structure of hook 1 is more reasonable, which makes it easy to assemble and easy to hook the manhole cover.

[0114] Example 14

[0115] Based on any one of Embodiments 1 to 12, in this embodiment, the hook 1 has an inverted T-shaped structure.

[0116] The scheme has a simple structure. The T-shaped structure of hook 1 is more reasonable, which makes it easy to assemble and easy to hook the manhole cover.

[0117] The working principle of this utility model is as follows:

[0118] During use, the hammer 5 can be moved up and down by means of means that can be conceived by those skilled in the art, such as manually or by the shoulder strap 8, so that the hammer 5 moves up and down on the slide bar 6 to impact the lifting component. The vibration generated by the impact is transmitted to the manhole cover through the hook 1, which finally loosens and opens the manhole cover. The operation is simple and can realize the quick opening of the manhole cover.

[0119] When used by two people, hook 1 is hooked into the hole of the manhole cover. One operator holds the handle 7 and the other holds the shoulder strap 8. Pulling the shoulder strap 8 back and forth causes the hammer 5 to slide on the slide rod 6 and impact the upper end of the slide rod. The vibration generated by the impact is transmitted to the manhole cover through hook 1, which eventually loosens and opens the manhole cover.

[0120] In northern winters, manhole covers are often frozen to the wellhead seat and are difficult to open. To ensure emergency response efficiency, this utility model designs an explosion-proof tool for quickly opening natural gas valve well covers, achieving rapid opening of the manhole covers.

[0121] The technical solution of this utility model consists of three parts:

[0122] Firstly, the manhole cover hook is made of beryllium bronze to prevent electric sparks from colliding with the manhole cover, while also possessing the hardness of steel. The manhole cover hook is the part that connects the manhole cover opening tool to the manhole cover hole. During the opening process, the manhole cover hook and the manhole cover hole must be compatible and interchangeable. Utilizing the characteristics of a triangle, the shape of the manhole cover hook is designed to prevent breakage during use.

[0123] Secondly, the hammer section has a base connected to the upper end of the hook, and the base is threaded to the slide rod. A buffer spring is installed between the hammer and the hook. A hammer seat is installed on the slide rod at the upper end of the hammer, and a handle is installed on the upper end of the hammer seat. The hammer principle is used to loosen the well cover to achieve the purpose of saving effort.

[0124] Thirdly, the soft shoulder strap is designed to make it easier for workers to carry tools, and it also allows the use of the human shoulder to assist in opening heavy manhole covers.

[0125] This utility model combines explosion-proof, portable, and labor-saving technical features. First, it addresses the risk of combustion and explosion by preventing the generation of ignition sources during the opening of manhole covers when there are flammable gases inside the well. Second, it solves the problem of convenient manhole cover opening tools and reduces the storage space occupied by the tools. Third, it solves the problem of difficulty in opening heavy manhole covers such as cement-based composite materials and ductile iron manhole covers, as well as the problem of manhole covers being difficult to open when frozen in the cold season in the north.

[0126] The tool provided by this utility model has the following advantages:

[0127] Firstly, it improves work efficiency. Explosion-proof tools for quickly opening natural gas valve well covers can shorten opening time and improve the work efficiency of staff. This helps operators respond to various emergencies more quickly and improve service quality.

[0128] Secondly, it ensures operational safety. The explosion-proof design can effectively prevent safety accidents during the opening of the manhole cover, ensuring the personal safety of workers and the safe operation of gas pipelines.

[0129] Third, it reduces labor intensity. The lightweight and easy-to-operate features of the new tools can reduce the labor intensity of workers and improve job satisfaction.

[0130] The tool provided by this utility model has the following characteristics in terms of theoretical methods, solutions to key or common technical problems, main technical indicators, and overall technical level:

[0131] Firstly, at the theoretical and methodological level, it breaks through the limitations of traditional integrated design, innovatively combining modular design concepts with field experience. Different functional parts of the tool are divided into independent modular designs. These modules can be designed, manufactured, and replaced individually, thereby improving the tool's flexibility, replaceability, and maintainability. Specifically, this explosion-proof tool is divided into multiple functional modules, such as a hammer module and an explosion-proof hook module. Each module has been carefully optimized to achieve a specific function; for example, the hammer module provides the vibration source needed to open the manhole cover, while the explosion-proof opening module safely transmits the vibration to the manhole cover, thus quickly opening it.

[0132] II. Addressing Key or Common Technical Challenges: This solution incorporates in-depth research and design optimization to address potential safety hazards during the opening of natural gas valve well covers. By employing an explosion-proof design, it effectively avoids the risk of fire and explosion caused by sparks generated during opening due to friction and impact. Common explosion-proof tools on the market are typically made of bronze or aluminum bronze. Aluminum bronze is relatively soft, inexpensive, and cannot withstand heavy loads. Furthermore, most common explosion-proof tools are made of a single material, which is usually expensive. To address the issues of high-strength loads and manufacturing costs, this solution optimizes the strength of the explosion-proof material only in the hook, selecting high-performance beryllium bronze. This material contains 1.7%-2.5% beryllium and small amounts of titanium, chromium, and other elements; after quenching, its ultimate strength can reach 1250-1500 MPa. However, beryllium bronze is relatively expensive. Selecting a small amount of beryllium bronze for use in key hook positions can reduce manufacturing costs while meeting explosion-proof requirements. Compared with traditional explosion-proof tools that are integrated or hydraulic tools, which may encounter problems such as jamming or damage to the body when opening manhole covers, beryllium bronze has better durability and reliability.

[0133] III. In terms of key technical indicators, this solution performs excellently. Specifically, firstly, the tool is portable, measuring 55cm in length and weighing 9kg, making it easy to carry; secondly, the hammer component weighs 2kg, and when used by an adult male, it generates approximately 2200N of impact force, enabling it to quickly impact and loosen the manhole cover, thus improving the efficiency of opening manhole covers. Simultaneously, it achieves a high level of explosion-proof performance and durability, ensuring the safety and stability of the operation process.

[0134] In summary, the tool solution provided by this utility model performs excellently in terms of theoretical methods, solutions to key or common technical problems, main technical indicators, and overall technical level, and has significant advantages and competitiveness compared with similar technologies.

[0135] The innovation of this utility model in improving the existing well hook structure, and its practicality are reflected in several aspects, as follows:

[0136] I. Innovation and Practicality of Manhole Cover Hooks: Material Innovation: Manhole cover hooks are made of beryllium bronze, significantly improving tool safety. Beryllium bronze has excellent electrical conductivity and hardness comparable to steel, but compared to materials like steel, it is less likely to generate sparks during friction, reducing the risk of fire or explosion caused by electrical sparks generated during manhole cover opening.

[0137] In terms of structural design, the manhole cover hook is designed based on triangular characteristics. This design not only enhances the structural stability and applicability of the hook, but also avoids potential breakage during use. At the same time, the compatibility and versatility of the hook with the manhole cover opening have been fully considered, allowing the tool to be used with manhole covers of different sizes.

[0138] II. Innovation and Practicality of the Hammer Component: In terms of labor-saving design, the damping spring between the hammer and the hook, along with the cooperation between the hammer slide and the hammer base, utilizes the vibration principle generated by the hammer to loosen the manhole cover, thus achieving labor-saving results. This design allows workers to easily apply force when opening the manhole cover, reducing physical exertion.

[0139] At the same time, the structure also helps to improve the safety performance of the tool. The design of the buffer spring not only helps to save effort, but also plays a buffering role when the hammer falls, reducing the impact force on the manhole cover and the noise that may be generated, while also reducing the risk of impact injury to the workers' hands.

[0140] III. Innovative and Practical Design of the Soft Shoulder Strap: Firstly, it enhances portability. The soft shoulder strap design allows workers to easily carry the tool, improving its portability. When opening heavy manhole covers, the shoulder strap allows workers to utilize the strength of their shoulders to assist in opening, further reducing the burden on their hands. Simultaneously, the shoulder strap not only facilitates tool carrying but can also be used as a rescue tool in emergencies. For example, when multiple people need to work together to open a manhole cover, the shoulder strap can act as a connecting tool, concentrating the strength of multiple people and improving opening efficiency.

[0141] In summary, this utility model has achieved significant results in improving the existing well hook structure, enhancing safety, saving time and labor, and increasing practicality. These innovations not only improve work efficiency and reduce safety risks, but also provide workers with a more convenient and comfortable operating experience. Therefore, this utility model brings important practical value and promotional significance to the production safety work of the gas industry.

[0142] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0143] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0144] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A blast protection tool for a quick-opening natural gas valve well lid, characterized in that: It includes a lifting component, a hammer (5) and a hook (1). The hook (1) is rotatably mounted on the lower end of the lifting component and is used to hook the well cover. The hammer (5) is sleeved on the lifting component and can slide up and down.

2. The explosion prevention tool for a quick-opening natural gas valve well lid according to claim 1, characterized in that: The lifting component includes a slide rod (6) and a base (9). The slide rod (6) is vertically arranged, and the punch (5) is slidably sleeved on the slide rod (6). The base (9) is fixedly installed at the lower end of the slide rod (6), and the hook (1) is rotatably installed at the lower end of the base (9).

3. The explosion prevention tool for a quick-opening natural gas valve well lid according to claim 2, characterized in that: A boss (10) is fixedly installed on the upper end of the base (9), and the boss (10) is fixedly sleeved on the lower end of the slide rod (6).

4. The explosion prevention tool for a quick-opening natural gas valve well lid according to claim 2, characterized by: The lower end of the base (9) is provided with a groove, and one end of the hook (1) extends into the groove and is rotatably connected to the groove.

5. The explosion-proof tool for quickly opening natural gas valve well covers according to claim 4, characterized in that: The groove wall has a pair of holes facing each other, and a pin (2) is inserted into the pair of holes; one end of the hook (1) is rotatably sleeved on the pin (2).

6. The explosion-proof tool for quickly opening a natural gas valve well lid according to claim 2, characterized in that: The slide bar (6) is a cylindrical rod.

7. The explosion relief tool for a quick-opening natural gas valve well lid according to claim 6, characterized in that: A buffer spring (4) is slidably sleeved on the slide rod (6), and the two ends of the buffer spring (4) abut against the base (9) and the hammer (5) respectively.

8. The explosion relief tool for a quick-opening natural gas valve well lid according to claim 7, characterized in that: A protruding ring (11) is also fixedly sleeved on the slide rod (6), and the protruding ring (11) is located above the punch (5).

9. The explosion relief tool for a quick-opening natural gas valve well lid according to claim 2, characterized in that: A handle (7) is fixedly connected to the upper end of the slide bar (6).

10. The explosion-proof tool for quickly opening natural gas valve well covers according to claim 9, characterized in that: The handle (7) has an inverted triangular structure, and one corner of its bottom is fixedly connected to the upper end of the slide bar (6).

11. The explosion relief tool for a quick-opening natural gas valve well cover according to any one of claims 1-10, characterized in that: The hammer (5) is fitted with a shoulder strap (8).

12. The explosion relief tool for a quick-opening natural gas valve pit cover according to claim 11, characterized in that: Two loops (3) are fixedly installed on the hammer (5), and the two ends of the shoulder strap (8) are respectively connected to the two loops (3).

13. The explosion relief tool for a quick-opening natural gas valve well cover according to any one of claims 1-10, characterized in that: The hook (1) has an arc-shaped structure.

14. The explosion relief tool for a quick-opening natural gas valve well cover according to any one of claims 1-10, characterized in that: The hook (1) has an inverted T-shaped structure.

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