Portable well lid opening tool

Abstract

The utility model relates to the field of municipal drainage construction, in particular to a portable well lid opening tool which comprises a first mounting frame, a first insertion strip, a second mounting frame and a jack. The first mounting frame is a Y-shaped frame, the bottoms of three edges of the first mounting frame are rotationally connected with first insertion strips, the working ends of the first insertion strips are hook-shaped, the second mounting frame is hinged to any edge of the first mounting frame, and the working end of the jack is connected with the lower surface of the second mounting frame; according to the tool, after three first insertion strips on the first mounting frame are turned downwards and inserted into inspection holes in a wellhead cover plate, second insertion strips penetrate through the second mounting frame and the first mounting frame to connect and fix the second mounting frame and the first mounting frame, and then upward thrust is generated on the second mounting frame through a jack, so that the inspection holes in the wellhead cover plate are formed; and when the first mounting frame moves upwards, the three first inserting strips pry the wellhead cover plate upwards, operation is convenient, and the overall structure of the tool is simple.

Description

Technical Field

[0001] This utility model relates to the field of municipal drainage construction technology, specifically to a portable manhole cover opening tool. Background Technology

[0002] A manhole cover is a device used to cover the opening of a well (such as a storm or sewage inspection well, cable well, communication well, water supply well, etc.). It is usually made of metal (such as cast iron or steel), composite materials, or concrete. A manhole cover opening tool is a device specifically designed to open a manhole cover, helping maintenance personnel or workers to quickly and safely enter the facility inside the well.

[0003] Traditional manhole covers in the present technology are too tight due to repeated vehicle traffic. When using tools, a lot of force is required to pry them open. The operation is cumbersome and time-consuming. In addition, traditional manhole cover opening tools are often bulky and heavy, making them inconvenient to carry and store. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the defects in the prior art and thus provide a portable manhole cover opening tool.

[0005] A portable manhole cover opening tool includes a first mounting bracket, a first insert bar, a second mounting bracket, and a jack;

[0006] The first mounting bracket is a "Y" shaped bracket. The bottom of each of the three sides of the first mounting bracket is rotatably connected to a first insertion strip. The working end of the first insertion strip is hook-shaped. The second mounting bracket is hinged to any one side of the first mounting bracket. The working end of the jack is connected to the lower surface of the second mounting bracket.

[0007] Furthermore, baffles are fixedly connected to the bottom of the three sides of the first mounting bracket, and the baffles are located on the side of the first insert strip away from the center line of the first mounting bracket.

[0008] Furthermore, a second magnet is fixed to the bottom of each of the three sides of the first mounting bracket, and the second magnet is located on the side of the first insertion strip near the center line of the first mounting bracket.

[0009] Furthermore, a third magnet is provided on the end face of the first insertion strip on the side close to the center line of the first mounting bracket, and the third magnet corresponds to the position of the second magnet.

[0010] Furthermore, a first magnet is fixedly connected to the upper surface of the first mounting bracket.

[0011] Furthermore, a fourth magnet is fixed to the upper surface of the second mounting bracket, and the fourth magnet is positioned corresponding to the first magnet.

[0012] Furthermore, the working end of the jack is connected to the lower surface of the mounting plate, and the upper surface of the mounting plate is fixedly connected to the second mounting bracket.

[0013] Furthermore, a pair of triangular support frames are fixedly connected to the upper surface of the mounting plate, and the triangular support frames are also fixedly connected to the side wall of the second mounting frame.

[0014] Furthermore, a first groove is provided on one side of the first mounting bracket and the second mounting bracket that are hinged together, and a second groove is provided on the second mounting bracket. The second insert bar extends through the second groove 12 into the first groove.

[0015] The first mounting bracket is also fixed with a lifting ring, and the second mounting bracket has handles fixed to both sides.

[0016] This utility model's technical solution involves flipping three first insertion strips on the first mounting frame downwards and inserting them into the inspection holes on the wellhead cover. Then, a second insertion strip passes through the second mounting frame and the first mounting frame to connect and fix them. A jack then generates an upward thrust on the second mounting frame, and through leverage, the first mounting frame moves upwards while the three first insertion strips pry the wellhead cover upwards. Once completed, the device is magnetically folded and secured using magnets on the first mounting frame, the second mounting frame, and the first insertion strips. This improves the portability of the device during use, makes it easy to operate, and results in a simple overall structure. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the first mounting bracket of this utility model;

[0020] Figure 3 This is a cross-sectional view of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the second mounting bracket of this utility model;

[0022] Figure 5 for Figure 3 A partial schematic diagram of point A in the middle;

[0023] Figure 6 This is a three-dimensional arrangement diagram of the present invention for working with different manhole covers.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. First mounting bracket; 2. Wellhead cover; 3. Inspection hole; 4. First magnet; 5. Second magnet; 6. First insert bar; 7. Third magnet; 8. Baffle; 9. First groove; 10. Lifting ring; 11. Second mounting bracket; 12. Second groove; 13. Handle; 14. Triangular support frame; 15. Mounting plate; 16. Jack; 17. Second insert bar; 18. Fourth magnet. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described 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.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] 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.

[0029] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0030] Please see Figure 1 and Figure 6 A portable manhole cover opening tool includes a first mounting frame 1, a first insert bar 6, a second mounting frame 11, and a jack 16;

[0031] The first mounting bracket 1 is a Y-shaped bracket. First insertion strips 6 are rotatably connected to the bottom of each of the three sides of the first mounting bracket 1. The working end of the first insertion strip 6 is hook-shaped and matches the inspection hole of the wellhead cover plate 2. The second mounting bracket 11 is hinged to any one side of the first mounting bracket 1. The working end of the jack 16 is connected to the lower surface of the second mounting bracket 11. Baffles 8 are fixedly connected to the bottom of each of the three sides of the first mounting bracket 1, and the baffles 8 are located on the side of the first insertion strip 6 away from the center line of the first mounting bracket 1. The baffles 8 restrict the position of the first insertion strip 6 to prevent it from shaking during operation. Second magnets 5 are fixedly connected to the bottom of each of the three sides of the first mounting bracket 1, and the second magnets 5 are located on the side of the first insertion strip 6 closest to the center line of the first mounting bracket 1. A third magnet 7 is provided on the end face of the first insertion strip 6 closest to the center line of the first mounting bracket 1, and the third magnet 7 corresponds to the position of the second magnet 5. The first insertion strip 6 can be quickly folded toward the bottom of the first mounting bracket 1 by means of the third magnet 7 and the second magnet 5, and the first insertion strip 6 can also be fixed, which enhances the overall convenience.

[0032] A first magnet 4 is fixedly connected to the upper surface of the first mounting bracket 1. A fourth magnet 18 is fixedly connected to the upper surface of the second mounting bracket 11. The fourth magnet 18 corresponds to the position of the first magnet 4. The fourth magnet 18 and the first magnet 4 allow the second mounting bracket 11 to be stably stored after folding towards the first mounting bracket 1, enhancing the overall stability and convenience. The working end of the jack 16 is connected to the lower surface of the mounting plate 15, and the upper surface of the mounting plate 15 is fixedly connected to the second mounting bracket 11. A pair of triangular support frames 14 are fixedly connected to the upper surface of the mounting plate 15, and the triangular support frames 14 are also fixedly connected to the side wall of the second mounting bracket 11. A first groove 9 is provided on one side where the first mounting bracket 1 and the second mounting bracket 11 are hinged. A second groove 12 is provided on the second mounting bracket 11. A second insert strip 17 extends through the second groove 12 into the first groove 9 to enhance the strength after unfolding. A lifting ring 10 is also fixedly connected to the first mounting bracket 1, and handles 13 are fixedly connected to both sides of the second mounting bracket 11.

[0033] When it is necessary to pry open the wellhead cover 2, firstly, the three first insertion strips 6 on the first mounting bracket 1 are perpendicular to the bottom of the first mounting bracket 1 and inserted into the inspection holes 3 on the wellhead cover 2. The wellhead cover 2 is held by the three first insertion strips 6. Then, by flipping and unfolding the second mounting bracket 11 on the first mounting bracket 1, the second insertion strip 17 is inserted into the first groove 9 after passing through the second groove 12. During use, the three baffles 8 provided below the first mounting bracket 1 can limit the three first insertion strips 6, thereby preventing the first mounting bracket 1 from shaking during the prying of the wellhead cover 2. Next, by placing the jack 16 below the mounting plate 15 on the first mounting bracket 1, the first mounting bracket 1 is moved upward by the jack 16, thereby driving the wellhead cover 2 below the first mounting bracket 1 to be pried open. Then, the wellhead cover 2 is retracted. During the prying process, the three first insertion strips 6 are folded inward, and the third magnet 7 on the first insertion strip 6 is attracted by the second magnet 5. The second insertion strip 17 is then pulled out from the first groove 9 and the second groove 12. The second mounting bracket 11 is then flipped over and placed above the first mounting bracket 1, and the first magnet 4 is attracted and stored by the fourth magnet 18. When encountering a locked manhole cover 2, the wire is passed through the lifting ring 10 and connected to the lock on the manhole cover 2 to provide a fixing point. When prying open a single-hole or multi-hole manhole cover 2, a single first insertion strip 6 can be inserted into the inspection hole 3, and the lifting ring 10 is used to connect it to the manhole cover via a rope. If the other two first insertion strips 6 cannot be accurately inserted into the inspection hole 3, a support point can be provided at the upper end of the manhole cover 2, or the jack 16 can be used to pry open the entire cover.

[0034] By flipping the three first insertion strips 6 on the first mounting bracket 1 downwards and inserting them into the inspection holes 3 on the wellhead cover plate 2, the second insertion strip 17 is passed through the second mounting bracket 11 and the first mounting bracket 11 to connect and fix the second mounting bracket 11 and the first mounting bracket 1. Then, the jack 16 generates an upward pushing force on the second mounting bracket 11. Through the lever principle, the first mounting bracket 1 is displaced upwards, and the three first insertion strips 6 pry the wellhead cover plate 2 upwards. After completion, the magnets set on the first mounting bracket 1, the second mounting bracket 11 and the first insertion strips 6 are magnetically folded and fixed for storage, which improves the portability of the device during use.

[0035] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A portable manhole cover opening tool, characterized in that, It includes a first mounting bracket (1), a first insert bar (6), a second mounting bracket (11), and a jack (16); The first mounting bracket (1) is a "Y" shaped bracket. The bottom of the three sides of the first mounting bracket (1) is rotatably connected to the first insertion strip (6). The working end of the first insertion strip (6) is hook-shaped. The second mounting bracket (11) is hinged to any side of the first mounting bracket (1). The working end of the jack (16) is connected to the lower surface of the second mounting bracket (11).

2. The portable manhole cover opening tool according to claim 1, characterized in that, The bottom of the three sides of the first mounting bracket (1) is fixed with a baffle (8), and the baffle (8) is located on the side of the first insert strip (6) away from the center line of the first mounting bracket (1).

3. The portable manhole cover opening tool according to claim 2, characterized in that, The bottom of the three sides of the first mounting bracket (1) is fixed with a second magnet (5), and the second magnet (5) is located on the side of the first insertion strip (6) near the center line of the first mounting bracket (1).

4. A portable manhole cover opening tool according to claim 3, characterized in that, The first insertion strip (6) is provided with a third magnet (7) on the end face near the center line of the first mounting bracket (1), and the third magnet (7) corresponds to the position of the second magnet (5).

5. A portable manhole cover opening tool according to claim 1, characterized in that, A first magnet (4) is fixed to the upper surface of the first mounting bracket (1).

6. A portable manhole cover opening tool according to claim 5, characterized in that, The upper surface of the second mounting bracket (11) is fixed with a fourth magnet (18), which corresponds to the position of the first magnet (4).

7. A portable manhole cover opening tool according to claim 1, characterized in that, The working end of the jack (16) is connected to the lower surface of the mounting plate (15), and the upper surface of the mounting plate (15) is fixedly connected to the second mounting bracket (11).

8. A portable manhole cover opening tool according to claim 7, characterized in that, A pair of triangular support frames (14) are fixedly connected to the upper surface of the mounting plate (15), and the triangular support frames (14) are also fixedly connected to the side wall of the second mounting frame (11).

9. A portable manhole cover opening tool according to claim 1, characterized in that, The first mounting bracket (1) and the second mounting bracket (11) are hinged together on one side and a first groove (9) is provided. The second mounting bracket (11) is provided with a second groove (12). The second insert (17) extends through the second groove (12) into the first groove (9).

10. A portable manhole cover opening tool according to claim 1, characterized in that, The first mounting bracket (1) is also fixedly connected to a lifting ring (10), and the second mounting bracket (11) is fixedly connected to handles (13) on both sides.

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