Folding wrench for well lid

Abstract

The utility model belongs to the technical field of well lid opening tools, and particularly discloses a folding wrench for a well lid, which comprises a handle, a strip-shaped groove is arranged on the handle, a rotating shaft I is rotatably connected onto the handle, a draw hook is fixedly connected onto the rotating shaft I, the draw hook is clamped with the strip-shaped groove, and a protective component for preventing the draw hook from being separated from the groove is arranged on the strip-shaped groove. One end of the handle is fixedly connected with a limiting component for fixing the position of the retractor, and the other end of the handle is fixedly connected with a triangular tube; after use, the hook body of the drag hook is taken out from the through hole of the well lid, then the drag hook is rotated into the strip-shaped groove through the first rotating shaft, and the drag hook is fixed in the strip-shaped groove through the protection assembly, so that the carrying and placing space is reduced, carrying and placing are convenient, and the problems that when an existing well lid wrench is carried or placed, occupied space is large, and use is inconvenient are solved. And carrying and placing are not convenient.

Description

Technical Field

[0001] This utility model relates to the field of manhole cover opening tools, specifically to a folding wrench for manhole covers. Background Technology

[0002] With the rapid development of society, people have higher and higher requirements for the level of urban municipal management. Therefore, in order to manage cities more efficiently, the construction of various underground pipelines for electricity, drainage, communication, heating and other purposes in cities is becoming increasingly sophisticated. Usually, in order to facilitate regular maintenance, manholes are installed at intervals. To prevent people and objects from falling into the manholes, manhole covers are installed. The manhole covers are usually square or round and have slotted holes for opening. The traditional manhole cover wrench is a straight stick with a hook at the front and a handle at the back. To open the manhole cover, the hook of the manhole cover wrench is inserted into the hole of the manhole cover, and then the handle is used to pull the manhole cover upwards. When carrying or storing, the manhole cover wrench takes up a lot of space and is inconvenient to carry or store. Utility Model Content

[0003] The purpose of this utility model is to provide a folding wrench for manhole covers, so as to solve the problem that existing manhole cover wrenches take up a lot of space and are inconvenient to carry or store.

[0004] To achieve the above objectives, the basic solution provided by this utility model is as follows: a folding wrench for manhole covers, including a handle, a groove on the handle, a rotating shaft connected to the handle, a hook fixedly connected to the rotating shaft, the hook engaging with the groove, a protective component on the groove to prevent the hook from dislodging, a limiting component for fixing the position of the hook fixedly connected to one end of the handle, and a triangular tube fixedly connected to the other end of the handle.

[0005] The principle and beneficial effects of this utility model are as follows: In use, first open the lock on the manhole cover using the triangular tube, then open the protective component, rotate the hook out of the slot through the pivot, fix the hook in place using the limiting component, then insert the hook body into the through hole of the manhole cover, and then pull the manhole cover open by forcefully pulling upwards with the handle. After use, remove the hook body from the through hole of the manhole cover, rotate the hook back into the slot through the pivot, and fix the hook in the slot using the protective component, reducing the space required for carrying and placing, making it convenient to carry and place.

[0006] Option 2, a preferred option of the basic option, includes an L-shaped plate with a rotating shaft rotatably connected to it. The rotating shaft is fixed to a strip groove, and torsion springs are movably sleeved at both ends of the rotating shaft. One end of the torsion spring abuts against the strip groove, and the other end abuts against the L-shaped plate. The L-shaped plate abuts against the hook. After the hook is removed from the through hole of the manhole cover, the L-shaped plate is pulled out through the rotating shaft, so that the opening of the L-shaped plate faces outward. Then, the hook is rotated so that it is engaged in the strip groove. At the same time, the L-shaped plate is released. Due to the rotational force generated by the torsion spring, the L-shaped plate returns to its original position. At this time, the opening of the L-shaped plate fixes the hook, preventing the hook from falling out of the strip groove when carried or placed.

[0007] Option 3, which is the preferred option of Option 2, has a lever fixed to the L-shaped plate; the lever makes it easy to pry open the L-shaped plate, and the structure is simple and easy to operate.

[0008] Option 4, a preferred option of the basic option, includes a limiting block and a handle. The limiting block has a limiting groove that engages with the hook. After the hook rotates out of the groove, it is engaged in the limiting groove. Then, the hook body is inserted into the through hole of the manhole cover, and the manhole cover is opened by pulling upward with the handle. The limiting groove can prevent the hook from swaying left and right during use, increase the stability of the hook during use, reduce the wear of the rotating shaft, and increase the service life of the device.

[0009] Option 5, which is a preferred option of Option 4, has a hanging ring rotatably connected to the limiting block; when carrying or placing, the hanging ring can be rotated out of the limiting block to hang the device, making it easy to carry and place.

[0010] Option 6, which is a preferred option of the basic option, has anti-slip texture fixed on the handle. The anti-slip texture can increase the roughness of the handle surface and increase the contact area between the hand and the handle during use. When in contact, it can generate greater friction, so that the handle can be pulled upward forcefully to prevent it from slipping off, thus increasing the safety of the device. Attached Figure Description

[0011] Figure 1 This is a perspective view of a folding wrench for manhole covers when folded according to this utility model.

[0012] Figure 2 This is a right view of a folding wrench for manhole covers according to this utility model when folded;

[0013] Figure 3 This is a perspective view of a manhole cover opened with a folding wrench according to the present invention;

[0014] Figure 4 This is an exploded view of a folding wrench for manhole covers according to this utility model. Detailed Implementation

[0015] The present invention will be further described in detail below through specific embodiments:

[0016] The reference numerals in the accompanying drawings of the instruction manual include: 1. handle, 2. slot, 3. L-shaped plate, 4. hook, 5. pivot one, 6. torsion spring, 7. pivot two, 8. triangular tube, 9. hanging ring, 10. limiting block, 11. paddle, 12. limiting groove, 13. anti-slip texture.

[0017] Example

[0018] like Figures 1 to 4 As shown: A folding wrench for manhole covers includes a handle 1 with a slotted groove 2. A pivot 5 is rotatably connected to the handle 1, and a hook 4 is fixedly connected to the pivot 5. The hook 4 is engaged with the slotted groove 2. A protective component is provided on the slotted groove 2 to prevent the hook 4 from disengaging. The protective component includes an L-shaped plate 3 with a lever 11 fixedly connected to it. A pivot 7 is rotatably connected to the L-shaped plate 3 and fixedly connected to the slotted groove 2. Torque springs are movably sleeved at both ends of the pivot 7. Spring 6, one end of torsion spring 6 abuts against strip groove 2, the other end of torsion spring 6 abuts against L-shaped plate 3, L-shaped plate 3 abuts against hook 4, one end of handle 1 is fixedly connected to a limiting component that fixes the position of hook 4, the limiting component includes limiting block 10, limiting block 10 is fixedly connected to handle 1, a hanging ring 9 is rotatably connected to limiting block 10, limiting groove 12 is opened on limiting block 10, limiting groove 12 is engaged with hook 4, the other end of handle 1 is fixedly connected to triangular tube 8, and anti-slip texture 13 is fixedly connected to handle 1.

[0019] The implementation method of this embodiment is as follows: When in use, first open the lock on the manhole cover through the triangular tube 8, then pull out the L-shaped plate 3 through the lever 11 so that the opening of the L-shaped plate 3 faces outward, then rotate the hook 4 out of the strip groove 2, then release the L-shaped plate 3. Due to the rotational force generated by the torsion spring 6, the L-shaped plate 3 returns to its original position. Finally, rotate the hook 4 so that the hook 4 is fixed on the limiting groove 12. Then the hook body of the hook 4 can be inserted into the through hole of the manhole cover. Then, pull upward forcefully through the handle 1 to open the manhole cover.

[0020] After use, remove the hook 4 from the through hole of the manhole cover, then rotate the hook 4 to separate it from the limiting groove 12. Then, use the lever 11 to pry out the L-shaped plate 3 so that the opening of the L-shaped plate 3 faces outward. Next, let the hook 4 get into the strip groove 2 and release the L-shaped plate 3. Due to the rotational force generated by the torsion spring 6, the L-shaped plate 3 returns to its original position. At this time, the opening of the L-shaped plate 3 will fix the hook 4 to prevent the hook 4 from falling out of the strip groove 2.

[0021] When carrying or placing the device, the hanging ring 9 can be rotated out of the limiting block 10, and the device can be hung on the hanging ring 9 for easy carrying and placement.

[0022] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A folding wrench for manhole covers, characterized in that, Includes a handle (1), on which a strip groove (2) is opened, and a rotating shaft (5) is rotatably connected to the handle (1). A hook (4) is fixedly connected to the rotating shaft (5). The hook (4) and the strip groove (2) are engaged. A protective component is provided on the strip groove (2) to prevent the hook (4) from coming out of the groove. A limiting component for fixing the position of the hook (4) is fixedly connected to one end of the handle (1), and a triangular tube (8) is fixedly connected to the other end of the handle (1).

2. A folding wrench for manhole covers according to claim 1, characterized in that... The protective assembly includes an L-shaped plate (3), on which a rotating shaft (7) is rotatably connected. The rotating shaft (7) is fixedly connected to a strip groove (2). Torque springs (6) are movably sleeved at both ends of the rotating shaft (7). One end of the torsion spring (6) abuts against the strip groove (2), and the other end of the torsion spring (6) abuts against the L-shaped plate (3). The L-shaped plate (3) abuts against the hook (4).

3. A folding wrench for manhole covers according to claim 2, characterized in that, A lever (11) is fixedly attached to the L-shaped plate (3).

4. A folding wrench for manhole covers according to claim 1, characterized in that, The limiting component includes a limiting block (10), which is fixedly connected to the handle (1). A limiting groove (12) is opened on the limiting block (10), and the limiting groove (12) is engaged with the hook (4).

5. A folding wrench for manhole covers according to claim 4, characterized in that... A hanging ring (9) is rotatably connected to the limiting block (10).

6. A folding wrench for manhole covers according to claim 1, characterized in that, The handle (1) is fixed with anti-slip texture (13).

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