Well lid opening tool

Abstract

The utility model discloses a well lid opening tool which comprises an L-shaped rod, a pulley is fixed to the outer wall of the bottom of the L-shaped rod, an inserting rod is fixed to the outer wall of one side of the L-shaped rod, a clamping block is fixed to the outer wall of the inserting rod, handles are fixed to the outer walls of the two sides of the L-shaped rod respectively, a reinforcing rod is fixed to the outer wall of the L-shaped rod, and a friction pad is arranged on the outer wall of the L-shaped rod. A bearing is fixed to the inner wall of the L-shaped rod, the inserting rod is rotationally connected to the inner wall of the bearing, a rotary knob is fixed to the outer wall of the inserting rod, a buffering pad is fixed to the outer wall of the clamping block, and a telescopic rod is slidably connected to the inner wall of the L-shaped rod. The clamping block at the bottom of the inserting rod can be clamped at the position of the bottom of a well lid hole, a worker can push the handle downwards, takes the pulley as a fulcrum, utilizes the lever principle, pries the well lid body through the inserting rod and the clamping block on one side, then can push the well lid opening tool to move through the pulley, and moves the well lid body to one side of a well mouth of an oil tank well. And therefore, the cover opening work can be quickly completed in a labor-saving manner.

Description

Technical Field

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

[0002] A manhole cover is usually set at the wellhead of an oil tank well to protect the oil tank inside the well. The existing oil tank well cover is usually heavy and difficult to open. When workers perform oil measuring operations, it often requires greater labor intensity, is time-consuming and labor-intensive, and affects work efficiency.

[0003] After searching, the Chinese patent application number CN202110720432.X discloses an oil tank manhole cover opening tool, including two bases, each base is connected to a rotating unit, each base is connected to a track, and a sliding rod is connected between the two tracks. The sliding rod can slide along the track, and the sliding rod is rotated to connect the locking unit. However, due to the complex overall structure of the manhole cover opening tool in the above technical solution, the staff needs to use the manhole cover opening tool to perform multiple steps to open the manhole cover. Therefore, there is still a problem that the manhole cover opening tool is complicated to operate and not suitable for use, resulting in low work efficiency of the staff in opening and closing the manhole cover. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to provide a manhole cover opening tool.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A manhole cover opening tool comprises an L-shaped rod, a pulley is fixed to the outer wall of the bottom of the L-shaped rod, an insertion rod is fixed to the outer wall of one side of the L-shaped rod, a clamping block is fixed to the outer wall of the insertion rod, and handles are fixed to the outer walls on both sides of the L-shaped rod.

[0007] As a further solution of the present invention: a reinforcing rod is fixed to the outer wall of the L-shaped rod.

[0008] As a further solution of the present invention: a friction pad is provided on the outer wall of the L-shaped rod.

[0009] As a further solution of the present invention: a bearing is fixed to the inner wall of the L-shaped rod, and the insertion rod is rotatably connected to the inner wall of the bearing.

[0010] As a further solution of the present invention: a knob is fixed on the outer wall of the insertion rod, and a buffer pad is fixed on the outer wall of the clamping block.

[0011] As a further solution of the present invention: the inner wall of the L-shaped rod is slidably connected to a telescopic rod, and the telescopic rod is fixed to the outer wall of the L-shaped rod by screws.

[0012] As a further solution of the present invention: a connecting block is fixed to the outer wall of one side of the telescopic rod, and the bearing is fixed on the inner wall of the connecting block.

[0013] The beneficial effects of the utility model are:

[0014] 1. The staff first inserts the plug rod and the block at the bottom of the plug rod into the manhole cover hole on the outer wall of the manhole cover body, then lifts the L-shaped rod to rotate the block at the bottom of the plug rod to the position stuck at the bottom of the manhole cover hole, and then the staff pushes the handle downward, so as to use the pulley as the fulcrum and utilize the lever principle to pry open the manhole cover body through the plug rod and the block on one side. Then, the pulley can be used to push the manhole cover opening tool to move the manhole cover body to the side of the oil tank well mouth, thereby completing the cover opening work labor-savingly and quickly.

[0015] 2. When the manhole cover needs to be closed, the staff first pushes the manhole cover opening tool to the side of the wellhead, aligns the manhole cover body supported by the plug rod and the block on one side with the wellhead, and then pulls up with both hands (handle) to move the manhole cover body at one end of the plug rod and the block downward and cover the wellhead, then lifts the L-shaped rod to rotate the block to a position parallel to the manhole cover hole, and then the block can be pulled out of the manhole cover hole to complete the installation of the manhole cover.

[0016] 3. The staff can adjust the length of the insertion rod from one side of the L-shaped rod by pulling the telescopic rod, so that the block at the bottom of the insertion rod can be inserted into the manhole cover holes on the outer wall of the manhole cover body of different sizes, thereby improving the overall applicability of the manhole cover opening tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of a manhole cover opening tool proposed by the utility model;

[0018] Figure 2 This is a side structural diagram of a manhole cover opening tool proposed by the utility model;

[0019] Figure 3 This is a structural schematic diagram of Example 2 of a manhole cover opening tool proposed by the present utility model;

[0020] Figure 4 The present invention is a schematic diagram of a telescopic rod structure of a manhole cover opening tool.

[0021] In the figure: 1-L-shaped rod, 2-handle, 3-reinforcement rod, 4-pulley, 5-friction pad, 6-insertion rod, 7-manhole cover body, 8-manhole cover hole, 9-block, 10-knob, 11-bearing, 12-buffer pad, 13-telescopic rod, 14-connecting block. DETAILED DESCRIPTION

[0022] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0023] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0024] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this patent.

[0025] In the description of this patent, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they can refer to fixed connection or set, detachable connection or set, or integral connection or set. Those skilled in the art will understand the specific meanings of the above terms in this patent based on the specific circumstances.

[0026] Example 1

[0027] A tool for opening a manhole cover, such as Figure 1-4 As shown, it includes an L-shaped rod 1, a pulley 4 is fixed to the outer wall of the bottom of the L-shaped rod 1, an insertion rod 6 is fixed to the outer wall of one side of the L-shaped rod 1, a block 9 is fixed to the outer wall of the insertion rod 6, and handles 2 are fixed to the outer walls on both sides of the L-shaped rod 1; a reinforcing rod 3 is fixed to the outer wall of the L-shaped rod 1.

[0028] The staff first inserts the insertion rod 6 and the block 9 at the bottom of the insertion rod 6 into the manhole cover hole 8 on the outer wall of the manhole cover body 7, then lifts the L-shaped rod 1 to rotate the block 9 at the bottom of the insertion rod 6 to a position that is stuck at the bottom of the manhole cover hole 8, and then pushes the handle 2 downward, so as to use the pulley 4 as a fulcrum and utilize the lever principle to pry open the manhole cover body 7 through the insertion rod 6 and the block 9 on one side. Then, the manhole cover opening tool can be pushed by the pulley 4 to move the manhole cover body 7 to the side of the oil tank well mouth, thereby completing the opening work effortlessly and quickly;

[0029] When it is necessary to close the manhole cover body 7, the staff first pushes the manhole cover opening tool to the side of the wellhead, aligns the manhole cover body 7 supported by the insertion rod 6 and the block 9 on one side of the wellhead, then pulls the handle upward with both hands to allow the manhole cover body 7 at one end of the insertion rod 6 and the block 9 to move downward and cover the wellhead, then lifts the L-shaped rod 1 to rotate the block 9 to a position parallel to the manhole cover hole 8, and then the block 9 can be pulled out of the manhole cover hole 8 to complete the installation of the manhole cover.

[0030] like Figure 1-2 As shown, the outer wall of the L-shaped rod 1 is provided with a friction pad 5; the friction pad 5 can cushion the side of the manhole cover body 7 against the outer wall of the L-shaped rod 1, and at the same time increase the friction between the contact surface between the outer wall of the L-shaped rod 1 and the manhole cover body 7, so that the L-shaped rod 1 can transport the manhole cover body 7 more stably.

[0031] Working principle: The staff first inserts the insertion rod 6 and the block 9 at the bottom of the insertion rod 6 into the manhole cover hole 8 on the outer wall of the manhole cover body 7, then lifts the L-shaped rod 1 to rotate the block 9 at the bottom of the insertion rod 6 to a position that is stuck at the bottom of the manhole cover hole 8. Then the staff pushes the handle 2 downward, so that with the pulley 4 as the fulcrum, the manhole cover body 7 is pried open by the insertion rod 6 and the block 9 on one side using the principle of leverage. Then, the manhole cover opening tool can be pushed by the pulley 4 to move the manhole cover body 7 to the side of the oil tank well mouth, thereby completing the opening work effortlessly and quickly. When the manhole cover body 7 needs to be closed, the staff first pushes the manhole cover opening tool to the side of the well mouth, aligns the manhole cover body 7 supported by the insertion rod 6 and the block 9 on one side with the well mouth, then pulls the handle upward with both hands to move the manhole cover body 7 at one end of the insertion rod 6 and the block 9 downward and covers the well mouth, then lifts the L-shaped rod 1 to rotate the block 9 to a position parallel to the manhole cover hole 8, and then the block 9 can be pulled out of the manhole cover hole 8, completing the installation of the manhole cover.

[0032] Example 2

[0033] A tool for opening a manhole cover, such as Figure 3-4As shown, this embodiment makes the following improvements on the basis of embodiment 1: a bearing 11 is fixed to the inner wall of the L-shaped rod 1, and the insertion rod 6 is rotatably connected to the inner wall of the bearing 11; a knob 10 is fixed to the outer wall of the insertion rod 6, and a buffer pad 12 is fixed to the outer wall of the block 9; a telescopic rod 13 is slidably connected to the inner wall of the L-shaped rod 1, and the telescopic rod 13 is fixed to the outer wall of the L-shaped rod 1 by screws; a connecting block 14 is fixed to the outer wall of one side of the telescopic rod 13, and the bearing 11 is fixed to the inner wall of the connecting block 14. The staff can adjust the length of the insertion rod 6 from one side of the L-shaped rod 1 by pulling out the telescopic rod 13, so that the block 9 at the bottom of the insertion rod 6 can be inserted into the manhole cover hole 8 on the outer wall of the manhole cover body 7 of different sizes, thereby improving the overall applicability of the manhole cover opening tool; at the same time, the buffer pad 12 can buffer the contact surface between the block 9 and the manhole cover body 7, thereby improving the supporting effect of the block 9 on the manhole cover body 7; at the same time, the staff can conveniently rotate the insertion rod 6 and the block 9 through the knob 10, thereby quickly adjusting the relative position between the block 9 and the manhole cover hole 8, thereby further improving the opening and closing efficiency of the manhole cover.

[0034] Working principle: The staff can adjust the length of the insertion rod 6 from one side of the L-shaped rod 1 by pulling the telescopic rod 13, so that the block 9 at the bottom of the insertion rod 6 can be inserted into the manhole cover hole 8 on the outer wall of the manhole cover body 7 of different sizes.

[0035] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A manhole cover opening tool, comprising an L-shaped rod (1), characterized in that: A pulley (4) is fixed to the outer wall at the bottom of the L-shaped rod (1), an insertion rod (6) is fixed to the outer wall on one side of the L-shaped rod (1), a clamping block (9) is fixed to the outer wall of the insertion rod (6), and handles (2) are respectively fixed to the outer walls on both sides of the L-shaped rod (1).

2. A manhole cover opening tool according to claim 1, characterized in that: A reinforcing rod (3) is fixed to the outer wall of the L-shaped rod (1).

3. A manhole cover opening tool according to claim 2, characterized in that: The outer wall of the L-shaped rod (1) is provided with a friction pad (5).

4. A manhole cover opening tool according to claim 3, characterized in that: A bearing (11) is fixed on the inner wall of the L-shaped rod (1), and the inserting rod (6) is rotatably connected to the inner wall of the bearing (11).

5. A manhole cover opening tool according to claim 4, characterized in that: A knob (10) is fixed on the outer wall of the insertion rod (6), and a buffer pad (12) is fixed on the outer wall of the clamping block (9).

6. A manhole cover opening tool according to claim 4, characterized in that: The inner wall of the L-shaped rod (1) is slidably connected to a telescopic rod (13), and the telescopic rod (13) is fixed to the outer wall of the L-shaped rod (1) by screws.

7. A manhole cover opening tool according to claim 6, characterized in that: A connecting block (14) is fixed to the outer wall of one side of the telescopic rod (13), and the bearing (11) is fixed to the inner wall of the connecting block (14).

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