A portable tool for opening municipal rainwater and sewage inspection manhole covers

Abstract

The utility model provides a kind of tool of portable opening municipal rainwater and sewage inspection cellar well lid, comprising: crowbar main body, including first stem portion, and the crowbar tip being set to the last end of first stem portion;Crowbar stem main body of detachable connection crowbar main body, including second stem portion, and the handle being set to the last end of second stem portion, handle and second stem portion junction place are provided with a hook. When using the tool to open well lid, by hooking into the air hole of well lid, using hook to press up lock tongue, well lid is self-locking and is opened, while using two hands to tightly hold crowbar tip, and crowbar main body is pressed to ground direction, and pry well lid to open. In daily life, as crowbar is used, crowbar tip extends into prying position, two hands tightly hold handle, and prying operation is completed, to realize the function of conveniently prying municipal rainwater and sewage inspection cellar well lid due to corrosion.

Description

Technical Field

[0001] This utility model relates to a portable tool for opening manhole covers for municipal stormwater and sewage inspection wells, and is applied in the field of municipal stormwater and sewage drainage technology in the marine-land transition zone. Background Technology

[0002] Municipal stormwater and sewage pipe inspection manholes play a vital role in urban drainage systems. They are commonly used to inspect the condition of pipes and to install sensing devices such as level gauges to monitor changes in water flow. During the daily operation and maintenance of drainage pipes and the installation and upkeep of sensing devices, it is necessary to frequently open the manhole covers. Currently, hooks and crowbars are commonly used to open these manhole covers. These tools are widely used in field operations due to their simplicity and ease of manufacture.

[0003] However, in the transition zone between land and sea, due to the extremely harsh corrosive conditions, most cast iron storm and sewage manhole covers with locking tongues are often difficult to open using hooks and crowbars due to rust. In the field of urban water supply and drainage, some inspection manholes are located in the green belt areas of urban expressways and main roads, where there are many passing vehicles at high speeds, making the inspection operation highly dangerous. From the perspective of ensuring safety, on-site personnel urgently need tools that can quickly open manhole covers for inspection. Therefore, it is urgent to design a portable tool to open the manhole covers of municipal storm and sewage inspection manholes to solve this problem. Utility Model Content

[0004] This invention provides a portable tool for opening the manhole covers of municipal stormwater and sewage inspection wells, which can effectively solve the above-mentioned problems.

[0005] This utility model is implemented as follows:

[0006] A portable tool for opening municipal stormwater and sewage inspection manhole covers includes:

[0007] The crowbar body includes a first rod portion and a crowbar tip disposed at the end of the first rod portion;

[0008] The pry bar body is detachably connected to the pry bar body, including a second rod portion and a handle provided at the end of the second rod portion, wherein a hook is provided at the connection between the handle and the second rod portion.

[0009] As a further improvement, the upper surface of the tip of the crowbar is provided with an anti-slip part.

[0010] As a further improvement, the angle α between the central axis of the first rod and the plane of the crowbar tip is 160-170°.

[0011] As a further improvement, the crowbar body is threadedly connected to the crowbar body.

[0012] As a further improvement, the crowbar body and the pry bar body are connected by a quick-release mechanism.

[0013] As a further improvement, the quick-release mechanism includes a first quick-release part disposed at the end of the crowbar body away from the tip of the crowbar, and a second quick-release part disposed at the end of the crowbar body away from the handle. The first quick-release part connects to the second quick-release part to fix the crowbar body and the crowbar body.

[0014] As a further improvement, the first quick-release part includes a mounting block located at the end of the pry bar body away from the tip of the pry bar. A toothed insert block is located at the end of the mounting block, and positioning blocks are symmetrically arranged on both sides of the toothed insert block. The second quick-release part includes a mounting groove located at the end of the pry bar body away from the handle. A toothed connecting portion corresponding to the toothed insert block is located on the side wall of the mounting groove. An insert groove corresponding to the positioning block is located on the side wall of the toothed connecting portion, penetrating the toothed connecting portion. A positioning groove corresponding to the insert groove is located at the bottom of the toothed connecting portion, not penetrating the top of the toothed connecting portion. A compression spring is located at the bottom of the mounting groove, and a mounting plate is connected to the other end of the compression spring. When the toothed insert block is inserted into the toothed connecting portion, the positioning block slides into the insert groove, the mounting block presses against the mounting plate and compresses the spring. When the positioning block slides out of the insert groove, and the toothed insert block passes through the toothed connecting portion, the mounting block is rotated to position the positioning block in the positioning groove, thus fixing the pry bar body to the pry bar body.

[0015] The beneficial effects of this utility model are as follows: When using this tool to open a manhole cover, the hook is inserted into the vent hole of the manhole cover, and the hook is used to push the locking tongue upwards, causing the manhole cover to unlock itself. At the same time, both hands are used to firmly grasp the tip of the crowbar and push the crowbar body towards the ground to pry open the manhole cover. In daily use, it can be used as a crowbar. The tip of the crowbar is inserted into the prying position, and both hands are firmly grasped to complete the prying operation. The hook directly inserts into the vent hole of the manhole cover to open the rusted locking tongue and unlock the manhole cover. The tip of the crowbar simultaneously pries the manhole cover, which can easily pry open the manhole cover of municipal stormwater and sewage inspection manholes that are corroded. Furthermore, the crowbar (used for lever prying) and the hook (used for unlocking the manhole cover locking tongue) are integrated into a detachable structure, solving the problem of having to carry two tools in the past. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural schematic diagram provided in an embodiment of the present utility model.

[0018] Figure 2 This is a top view structural diagram provided in an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the quick-release mechanism structure provided in another embodiment of this utility model. Figure 2 .

[0020] Figure 4 This is a schematic diagram of the quick-release mechanism structure provided in another embodiment of this utility model. Figure 1 .

[0021] The accompanying diagrams are labeled as follows:

[0022] 10. Crowbar body; 11. First rod section; 12. Crowbar tip; 121. Anti-slip part;

[0023] 20. Crowbar body; 21. Second lever section; 22. Handle; 23. Hook;

[0024] 30. Quick-release mechanism; 31. First quick-release part; 311. Mounting block; 312. Toothed insert block; 313. Positioning block; 32. Second quick-release part; 321. Mounting groove; 322. Toothed connecting part; 323. Insert groove; 324. Positioning groove; 325. Compression spring; 326. Mounting plate. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0026] In the description of this utility model, the terms "first" and "second" 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, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] Reference Figures 1-2As shown, a portable tool for opening municipal stormwater and sewage inspection manhole covers includes:

[0028] The crowbar body 10 includes a first rod portion 11 and a crowbar tip 12 disposed at the end of the first rod portion 11;

[0029] The pry bar body 20, which is detachably connected to the pry bar body 10, includes a second rod portion 21 and a handle 22 disposed at the end of the second rod portion 21. A hook 23 is provided at the connection between the handle 22 and the second rod portion 21.

[0030] As a further improvement, the upper surface of the crowbar tip 12 is provided with an anti-slip part 121. In the high humidity and corrosive environment of the ocean, the anti-slip part 121 has a wavy / granular texture, which increases the friction between the crowbar tip 12 and the manhole cover and prevents slipping.

[0031] As a further improvement, the angle α between the central axis of the first rod 11 and the plane of the crowbar tip 12 is 160-170°. In this embodiment, the angle α between the central axis of the first rod 11 and the plane of the crowbar tip 12 is 170°. This angle range allows the crowbar tip 12 to obtain a large vertical prying force (lever principle) with a small downward pressure, thus solving the problem of difficulty in opening corroded manhole covers.

[0032] In this embodiment, the crowbar body 10 and the crowbar body 20 are threadedly connected. The threaded structure is not easy to loosen under strong loads and is suitable for long-term use in highly corrosive environments.

[0033] Reference Figures 3-4As shown, in another embodiment, the crowbar body 10 and the pry bar body 20 are connected by a quick-release mechanism 30. The quick-release mechanism 30 includes a first quick-release part 31 disposed at the end of the crowbar body 10 away from the crowbar tip 12, and a second quick-release part 32 disposed at the end of the pry bar body 20 away from the handle 22. The first quick-release part 31 connects to the second quick-release part 32 to fix the crowbar body 10 and the pry bar body 20. The first quick-release part 31 includes a mounting block 311 disposed at the end of the pry bar body 10 away from the pry bar tip 12. A toothed insert block 312 is disposed at the end of the mounting block 311, and positioning blocks 313 are symmetrically disposed on both sides of the toothed insert block 312. The second quick-release part 32 includes a mounting groove 321 disposed at the end of the pry bar body 20 away from the handle 22. A toothed connecting part 322 corresponding to the toothed insert block 312 is disposed on the side wall of the mounting groove 321. An insert groove 323 corresponding to the positioning block 313 is disposed on the side wall of the toothed connecting part 322, penetrating the toothed connecting part 322. A positioning groove 324 corresponding to the insert groove 323 but not penetrating the top of the toothed connecting part 322 is disposed at the bottom of the toothed connecting part 322, facing upwards. The mounting groove 321... A compression spring 325 is provided at the bottom, and the other end of the compression spring 325 is connected to a mounting plate 326. When the toothed insert block 312 is inserted into the toothed connecting part 322, the positioning block 313 slides into the insert groove 323, and the mounting block 311 presses against the mounting plate 326 and compresses the spring 325. When the positioning block 313 slides out of the insert groove 323 and the toothed insert block 312 passes through the toothed connecting part 322, the mounting block 311 is rotated to make the positioning block 313 set in the positioning groove 324 to complete the fixation of the crowbar body 10 and the crowbar body 20. Installation can be achieved through three steps: insertion, pressing, and rotation. This is more convenient than the threaded installation method, and the toothed structure installation method can improve the connection stability between the crowbar body 10 and the crowbar body 20.

[0034] The tool works as follows: Since the manhole cover has a locking tongue, when opening it, the hook 23 is inserted into the vent of the cover, and the hook 23 is used to push the locking tongue upwards, causing the cover to unlock. Simultaneously, both hands firmly grasp the tip 12 of the crowbar, and the crowbar body is pressed towards the ground to pry open the cover. In everyday use, it functions as a crowbar; the tip 12 is inserted into the prying position, and both hands firmly grasp the handle 22 to complete the prying operation.

[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A portable tool for opening municipal stormwater and sewage inspection manhole covers, characterized in that, include: The crowbar body (10) includes a first rod (11) and a crowbar tip (12) disposed at the end of the first rod (11); The pry bar body (20) detachably connects to the pry bar body (10), including a second rod part (21) and a handle (22) provided at the end of the second rod part (21), wherein a hook (23) is provided at the connection between the handle (22) and the second rod part (21).

2. The portable tool for opening municipal stormwater and sewage inspection manhole covers according to claim 1, characterized in that, The upper surface of the tip (12) of the crowbar is provided with an anti-slip part (121).

3. The portable tool for opening municipal stormwater and sewage inspection manhole covers according to claim 1, characterized in that, The angle α between the central axis of the first rod (11) and the plane of the crowbar tip (12) is 160-170°.

4. The portable tool for opening municipal stormwater and sewage inspection manhole covers according to claim 1, characterized in that, The crowbar body (10) is threadedly connected to the crowbar body (20).

5. A portable tool for opening municipal stormwater and sewage inspection manhole covers according to claim 1, characterized in that, The crowbar body (10) and the crowbar body (20) are connected by a quick-release mechanism (30).

6. A portable tool for opening municipal stormwater and sewage inspection manhole covers according to claim 5, characterized in that, The quick-release mechanism (30) includes a first quick-release part (31) disposed at the end of the crowbar body (10) away from the crowbar tip (12) and a second quick-release part (32) disposed at the end of the crowbar body (20) away from the handle (22). The first quick-release part (31) connects to the second quick-release part (32) to fix the crowbar body (10) and the crowbar body (20).

7. A portable tool for opening municipal stormwater and sewage inspection manhole covers according to claim 6, characterized in that, The first quick-release part (31) includes a mounting block (311) disposed at the end of the crowbar body (10) away from the crowbar tip (12). A toothed insert block (312) is disposed at the end of the mounting block (311), and a positioning block (313) is symmetrically disposed on both sides of the toothed insert block (312). The second quick-release part (32) includes a mounting groove (321) disposed at the end of the crowbar body (20) away from the handle (22). A toothed connecting part (322) corresponding to the toothed insert block (312) is disposed on the side wall of the mounting groove (321). An insert groove (323) corresponding to the positioning block (313) is disposed on the side wall of the toothed connecting part (322). An insert groove (323) penetrating the toothed connecting part (322) is disposed at the bottom of the toothed connecting part (322) with the toothed connecting part (322) facing upward. The top of the part (322) has a positioning groove (324) corresponding to the embedding groove (323). The bottom of the mounting groove (321) is provided with a compression spring (325). The other end of the compression spring (325) is connected to a mounting plate (326). When the toothed embedding block (312) is inserted into the toothed connecting part (322), the positioning block (313) slides into the embedding groove (323). The mounting block (311) presses against the mounting plate (326) and compresses the spring (325). When the positioning block (313) slides out from the embedding groove (323) and the toothed embedding block (312) passes through the toothed connecting part (322), the mounting block (311) is rotated so that the positioning block (313) is set in the positioning groove (324) to complete the fixation of the crowbar body (10) and the crowbar body (20).

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