Well lid opening tool

Abstract

The utility model discloses a well lid opening tool which comprises a pinch bar, a handle and an insertion end, the handle and the insertion end are arranged at the two ends of the pinch bar, the insertion end is flat, a connecting hook is connected to the side wall of the insertion end, a supporting portion is arranged on the pinch bar in a sliding and sleeved mode, the supporting portion is perpendicular to the axial direction of the pinch bar, and a clamping structure for clamping the pinch bar is arranged on the supporting portion. And the effect of reducing the difficulty of well lid opening work and the labor intensity of workers is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of manhole cover opening auxiliary tools, in particular to a manhole cover opening tool. Background Art

[0002] In construction projects, it is often necessary to open the manhole cover for construction drainage, wiring and other work, and underground water supply and drainage, fire protection, strong and weak electricity and other pipe network wells also need daily inspections. Every time for inspection, cleaning, maintenance and other work, the manhole cover needs to be completely opened. When opening the manhole cover, auxiliary tools such as iron hooks or crowbars are usually used. Existing opening tools are large in size, heavy, inconvenient to carry, very laborious to operate, easy to get stuck, and low in efficiency. Summary of the invention

[0003] The technical problem to be solved by the utility model is that it is time-consuming and laborious to open the manhole cover by using an iron hook or a crowbar.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a manhole cover opening tool, including a pry bar and a handle and an insertion end arranged at both ends of the pry bar, the insertion end is flat, and a connecting hook is connected to the side wall of the insertion end, and a supporting part is provided on the sliding sleeve of the pry bar, and the supporting part is arranged perpendicular to the axial direction of the pry bar, and a clamping structure for clamping the pry bar is provided on the supporting part.

[0005] Preferably, the supporting portion includes a U-shaped ring and support plates connected to both ends of the ring, the ring is sleeved on the pry bar, the clamping structure is a bolt threadedly connected between the two support plates, and the movable end of the support plate is semicircular.

[0006] Preferably, a receiving cavity is provided at the end of the pry bar, and the middle portion of the handle is horizontally rotatably connected in the receiving cavity.

[0007] Preferably, a connecting groove is provided on the side wall of the insertion end, the connecting hook is rotatably connected to the inner bottom of the connecting groove, the length of the connecting hook is greater than the length of the connecting groove, and a limiting structure is provided at the bottom of the connecting groove for abutting against the movable end of the connecting hook when the connecting hook is rotated to be perpendicular to the pry rod.

[0008] Preferably, the connecting hook is a triangular prism structure.

[0009] Preferably, a torsion spring is mounted on the mounting shaft of the connecting hook, and two ends of the torsion spring are respectively fixedly connected to the connecting hook and the inner wall of the connecting groove, and when there is no external force acting on the connecting hook, the connecting hook is subjected to an upward force from the torsion spring.

[0010] Preferably, the pry bar is a telescopic rod.

[0011] The utility model provides a manhole cover opening tool. A worker holds a handle, inserts the insertion end of the pry bar into a hole on the manhole cover, adjusts the position of the support part and then fixes the support part and the pry bar. The support part is supported on the ground at the edge of the manhole cover, and the handle and the pry bar are pressed down to lift the manhole cover. A relatively small force can be used to open the manhole cover. After the manhole cover is lifted, a connecting hook can be used to hook the manhole cover and pull the manhole cover to the ground, thereby improving the efficiency of opening the manhole cover and reducing the labor intensity of opening the manhole cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0013] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0014] Figure 2 It is the front view of the embodiment of the utility model.

[0015] Figure 3 It is a side view of an embodiment of the utility model.

[0016] In the figure: 1. pry bar; 2. accommodating cavity; 3. handle; 4. ring; 5. support plate; 6. insertion end; 7. connecting hook. DETAILED DESCRIPTION

[0017] like Figure 1-3 As shown, the utility model provides a manhole cover opening tool, including a pry bar 1 and a handle 3 and an insertion end 6 arranged at both ends of the pry bar 1, the insertion end 6 is flat, and a connecting hook 7 is connected to the side wall of the insertion end 6, and a supporting portion is provided on the sliding sleeve of the pry bar 1, and the supporting portion is arranged perpendicular to the axial direction of the pry bar 1, and a clamping structure for clamping the pry bar 1 is provided on the supporting portion.

[0018] The pry bar 1 is a cylindrical structure, and the insertion end 6 is a flat structure arranged at the end of the pry bar 1. When in use, the insertion end 6 can be inserted into the hole on the manhole cover, and its insertion depth is set according to the support part, so that the support part is supported on the ground at the edge of the manhole cover. Then the staff holds the handle 3, uses the contact part between the support part and the ground as a fulcrum, presses down the top of the pry bar 1, uses the connecting hook 7 to hook the bottom surface of the manhole cover, and lifts the manhole cover. After the manhole cover is lifted, the connecting hook 7 is used to pull the manhole cover to the ground aside.

[0019] like Figure 1-3As shown. The support part includes a U-shaped collar 4 and support sheets 5 connected to both ends of the collar 4. The collar 4 is mounted on the pry bar 1. Bolts are connected between the two support sheets 5. The movable ends of the support sheets 5 are semicircular. By tightening the bolts, the pry bar 1 is clamped by the two support sheets 5 to fix the position of the support part on the pry bar 1. According to the situation after the insertion end 6 of the pry bar 1 is inserted into the hole of the manhole cover, the position of the support part on the pry bar 1 is adjusted so that the movable end of the support sheet 5 of the support part contacts the ground, making it easier to lift the manhole cover.

[0020] In addition, a hinge is provided in the middle of the support sheet 5, and a through hole is provided at the fixed end of the support sheet 5 for inserting a bolt so as to fold the support sheet 5 for storage.

[0021] like Figure 1 As shown. The end of the pry bar 1 is provided with a receiving cavity 2, and the middle part of the handle 3 is horizontally rotatably connected in the receiving cavity 2. The handle 3 is rotatably arranged in the receiving cavity, and the handle 3 can be stored in the receiving cavity 2 when not needed, so as to facilitate the transportation of the manhole cover opening tool.

[0022] As a preferred embodiment of the utility model, in order to avoid interference between the connecting hook 7 and the hole of the manhole cover when the insertion end 6 is inserted into the manhole cover. A connecting groove is provided on the side wall of the insertion end 6, and the connecting hook 7 is rotatably connected to the inner bottom of the connecting groove. The length of the connecting hook 7 is greater than the length of the connecting groove, and a limiting structure is provided at the bottom of the connecting groove to abut the movable end of the connecting hook 7 when the connecting hook 7 is rotated to be perpendicular to the pry bar 1. The connecting hook 7 is located inside the connecting groove, and when the insertion end 6 is inserted into the hole of the manhole cover, it can be inserted smoothly. The limiting structure is the side wall of the bottom of the connecting groove. Since the connecting hook 7 is rotatably arranged at the inner bottom of the connecting groove, it will contact the inner side wall of the connecting groove when it is rotated to a state perpendicular to the pry bar 1, and thus cannot continue to rotate downward.

[0023] like Figure 1 The connecting hook 7 is a triangular prism structure. The structure of the connecting hook 7 can prevent the connecting hook 7 from being deformed during the process of pulling the manhole cover.

[0024] As a preferred embodiment of the utility model. A torsion spring is mounted on the mounting shaft of the connecting hook 7, and the two ends of the torsion spring are respectively fixedly connected to the connecting hook 7 and the inner wall of the connecting groove, and when there is no external force acting on the connecting hook 7, the connecting hook 7 is subjected to an upward force from the torsion spring. By mounting the torsion spring on the mounting shaft of the connecting hook 7, it can be ensured that when the insertion end 6 enters the manhole cover, most of the area of ​​the connecting hook 7 is located inside the connecting groove, and because the length of the connecting hook 7 is greater than the connecting groove, it can be ensured that the movable end of the connecting hook 7 is located outside the connecting groove.

[0025] As a preferred embodiment of the utility model, in order to facilitate the staff to hold the handle 3. The pry bar 1 is a telescopic rod, which is convenient for storage and carrying.

Claims

1. A manhole cover opening tool, characterized in that: The invention comprises a pry bar (1) and a handle (3) and an insertion end (6) arranged at both ends of the pry bar (1); the insertion end (6) is flat; a connecting hook (7) is connected to the side wall of the insertion end (6); a supporting portion is provided on the sliding sleeve of the pry bar (1); the supporting portion is arranged perpendicular to the axial direction of the pry bar (1); and a clamping structure for clamping the pry bar (1) is provided on the supporting portion.

2. A manhole cover opening tool as claimed in claim 1, characterized in that: The supporting portion comprises a U-shaped collar (4) and supporting plates (5) connected to both ends of the collar (4); the collar (4) is sleeved on the pry bar (1); the clamping structure is a bolt threadedly connected between the two supporting plates (5); and the movable end of the supporting plate (5) is semicircular.

3. A manhole cover opening tool as claimed in claim 1, characterized in that: The end of the pry bar (1) is provided with a receiving cavity (2), and the middle part of the handle (3) is horizontally rotatably connected in the receiving cavity (2).

4. A manhole cover opening tool as claimed in claim 1, characterized in that: A connecting groove is provided on the side wall of the insertion end (6), and the connecting hook (7) is rotatably connected to the inner bottom of the connecting groove. The length of the connecting hook (7) is greater than the length of the connecting groove, and a limiting structure is provided at the bottom of the connecting groove for abutting against the movable end of the connecting hook (7) when the connecting hook (7) is rotated to be perpendicular to the pry bar (1).

5. A manhole cover opening tool as claimed in claim 1 or 4, characterized in that: The connecting hook (7) is in a triangular prism structure.

6. A manhole cover opening tool as claimed in claim 4, characterized in that: A torsion spring is sleeved on the mounting shaft of the connecting hook (7), the two ends of the torsion spring are respectively fixedly connected to the connecting hook (7) and the inner wall of the connecting groove, and when no external force acts on the connecting hook (7), the connecting hook (7) is subjected to an upward force from the torsion spring.

7. A manhole cover opening tool as claimed in claim 1, characterized in that: The pry bar (1) is a telescopic bar.

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