Well lid opening device

Abstract

The invention discloses a well lid opening device which comprises a movable frame (1) and two lifting mechanisms (2) symmetrically arranged on the movable frame (1), each lifting mechanism (2) comprises two lifting parts (22) and a lifting longitudinal rod (21), and the lifting longitudinal rods (21) are installed on the two lifting parts (22) and can be lifted by the lifting parts (22); two lifting longitudinal rods (21) are arranged on the two T-shaped well hooks (24), two sliding transverse rods (23) are arranged on the two lifting longitudinal rods (21), the two ends of each sliding transverse rod (23) are connected with the two lifting longitudinal rods (21) respectively, a plurality of connecting holes (26) are formed in each sliding transverse rod (23), the connecting holes (26) are evenly formed in the axial direction of the corresponding sliding transverse rod (23) at intervals, and a plurality of T-shaped well hooks (24) are arranged on each T-shaped well hook (24). The lifting longitudinal rod (21) is detachably connected with a sliding transverse rod (23) through the connecting hole (26) and is connected with a T-shaped well hook (24), and the hook portion of the T-shaped well hook (24) is used for stretching into a gap of a well lid. By means of the well lid opener, various well lids difficult to open can be easily and safely opened, the operation efficiency is improved, and potential safety hazards are reduced.

Description

Technical Field

[0001] The invention relates to the field of mechanical technology, and in particular to a manhole cover opening device which can open the manhole cover easily and safely. Background Art

[0002] In municipal maintenance, sewer inspection and other operations, it is often necessary to open manhole covers. However, since manhole covers are exposed to the outdoor environment for a long time, they are susceptible to factors such as rust, deformation or foreign objects getting stuck, which makes them difficult to open. Traditional methods often use knocking or external force to force them open, which is not only inefficient and delays repair time, but may also cause safety hazards. For example, sparks generated by knocking may cause fires, or the manhole cover and ring may be damaged during the knocking process. Therefore, there is an urgent need for a device that can easily and safely open the manhole cover. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a manhole cover opening device, which can easily and safely open various manhole covers that are difficult to open, improve operating efficiency and reduce safety hazards.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a manhole cover opening device, comprising a moving frame and two lifting mechanisms, wherein:

[0005] The mobile frame is a frame structure, and a plurality of pulleys are provided at the bottom thereof for easy movement;

[0006] Two parallel lifting mechanisms are symmetrically arranged on the upper part of the moving frame, each of which includes two lifting parts and a lifting longitudinal rod, wherein the lifting longitudinal rod is installed on the two lifting parts and can be lifted by the lifting parts; the two lifting longitudinal rods are parallel;

[0007] Two sliding cross bars are arranged on the two lifting longitudinal bars, and the two ends of the sliding cross bars are respectively connected to the two lifting longitudinal bars, and a plurality of connecting holes are arranged on the sliding cross bars, and all the connecting holes are evenly spaced along the axial direction of the sliding cross bars. On each T-shaped well hook, a sliding cross bar is detachably connected through the connecting holes;

[0008] Wherein, the end of the sliding cross bar is slidably connected to the lifting longitudinal bar, so that the sliding cross bar can slide in the axial direction of the lifting longitudinal bar;

[0009] The lifting longitudinal rod is connected with a T-shaped well hook, and the hook portion of the T-shaped well hook is used to extend into the gap of the well cover.

[0010] Optionally, the T-shaped well hook is connected with a connecting screw, and the connecting hole is a threaded hole, and the connecting hole is adapted to the connecting screw so that the connecting screw can be threadedly connected to the connecting hole to adjust the head height of the T-shaped well hook.

[0011] Optionally, the T-shaped well hook is detachably connected to the connecting screw rod, so that the T-shaped well hook can be disassembled before installation and then connected to the connecting screw rod after the T-shaped well hook is in place.

[0012] Optionally, a universal shaft is provided at the connection between the T-shaped well hook and the connecting screw, so that the T-shaped well hook can be rotated by degrees to ensure that the well cover is securely hung.

[0013] Optionally, the mobile frame includes two connected frame longitudinal beams, the lifting mechanism is installed on the frame longitudinal beams, and the lifting mechanism corresponds to the frame longitudinal beams one by one, and a pulley is installed at the bottom of the frame longitudinal beam.

[0014] Optionally, the mobile frame further comprises a frame crossbeam, both ends of which are respectively connected to the two frame longitudinal beams, and the frame crossbeam is retractable so that the two frame longitudinal beams can move closer to or farther away from each other.

[0015] Optionally, the frame cross beam includes two sub-cross beams, ends of the two sub-cross beams are respectively connected to two frame longitudinal beams, and one of the two sub-cross beams is sleeved inside the other one, so as to realize the retractability of the frame cross beam.

[0016] Optionally, each sliding cross bar includes two sub-cross bars, ends of the two sub-cross bars are respectively connected to the two lifting longitudinal bars, and one of the two sub-cross bars is sleeved inside the other one, so as to realize the retractability of the sliding cross bar.

[0017] Optionally, there are two frame cross beams, which are respectively arranged at two ends of the frame longitudinal beam, so that the frame cross beam can be located outside the manhole cover.

[0018] Optionally, the lifting part in the lifting mechanism adopts a hydraulic lifting structure or a lifting motor.

[0019] The implementation of the embodiments of the present invention has the following beneficial effects:

[0020] The present invention provides a manhole cover opening device, which can easily lift a lifting longitudinal rod through a lifting mechanism, and use the lifting force of the lifting part to overcome the weight of the manhole cover and the resistance of the manhole cover being stuck, so that the manhole cover can be easily lifted, avoiding the traditional method of opening by knocking or external force, thereby improving working efficiency and reducing safety hazards.

[0021] In the present invention, the symmetrically arranged lifting mechanisms can ensure that the two lifting forces applied to the manhole cover are balanced and symmetrical, thereby avoiding deformation of the manhole cover.

[0022] In the present invention, the telescopic design of the sliding cross bar and the frame cross beam enables the device to adapt to manhole covers of different lengths and widths, thereby improving the versatility of the device.

[0023] In the present invention, the detachable connection between the T-shaped well hook and the connecting screw and the threaded connection design between the connecting screw and the connecting hole facilitate the adjustment of the position and height of the T-shaped well hook to adapt to the position and height of different well cover gaps. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the present invention.

[0025] Figure 1 A schematic structural diagram of an embodiment of a manhole cover opening device provided by the present invention.

[0026] Figure 2 for Figure 1 The main view;

[0027] Figure 3 for Figure 1 Top view of the .

[0028] Illustrations: 1. Mobile frame; 11. Frame longitudinal beam; 12. Frame cross beam; 2. Lifting mechanism; 21. Lifting longitudinal rod; 22. Lifting part; 23. Sliding cross bar; 24. T-type well hook; 25. Connecting screw; 26. Connecting hole; 3. Pulley; 4. Well cover. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] like Figure 1 FIG. 1 is a schematic diagram showing a structure of an embodiment of a manhole cover opening device provided by the present invention; and FIG. Figures 2 to 3 As shown, in this embodiment, the manhole cover opening device includes a moving frame 1 and two lifting mechanisms 2, wherein:

[0031] The mobile frame 1 is a frame structure, and a plurality of pulleys 3 are provided at the bottom thereof for easy movement;

[0032] Two parallel lifting mechanisms 2 are symmetrically arranged on the upper part of the moving frame 1. Each lifting mechanism 2 includes two lifting parts 22 and a lifting longitudinal rod 21. The lifting longitudinal rod 21 is installed on the two lifting parts 22 and can be lifted by the lifting parts 22. The two lifting longitudinal rods 21 are parallel.

[0033] Two sliding cross bars 23 are arranged on the two lifting longitudinal bars 21, and the two ends of the sliding cross bars 23 are connected to the two lifting longitudinal bars 21 respectively, and a plurality of connecting holes 26 are arranged on the sliding cross bars 23, and all the connecting holes 26 are evenly spaced along the axial direction of the sliding cross bars 23, so that the relative position of the T-shaped well hook 24 in the horizontal direction can be adjusted to adapt to the position of different well cover gaps. On each T-shaped well hook 24, a sliding cross bar 23 is detachably connected through the connecting hole 26;

[0034] The end of the sliding cross bar 23 is slidably connected to the lifting longitudinal bar 21, so that the sliding cross bar 23 can slide in the axial direction of the lifting longitudinal bar 21;

[0035] The lifting longitudinal rod 21 is connected with a T-shaped well hook 24 , and the hook portion of the T-shaped well hook 24 is used to extend into the gap of the well cover 4 .

[0036] More specifically, the T-shaped well hook 24 is connected with a connecting screw 25, and the connecting hole 26 is a threaded hole. The connecting hole 26 is adapted to the connecting screw 25, so that the connecting screw 25 can be threadedly connected with the connecting hole 26 to adjust the head height of the T-shaped well hook 24. By changing the position of the threaded matching between the connecting screw 25 and the connecting hole 26, the height of the head of the T-shaped well hook 24 is changed, which is suitable for manhole covers of different heights, especially manhole covers with different heights of two gaps on the manhole cover.

[0037] The T-shaped well hook 24 is detachably connected to the connecting screw 25, so that the T-shaped well hook 24 can be disassembled before installation, and then connected to the connecting screw 25 after the T-shaped well hook 24 is in place, so as to facilitate installation.

[0038] In a specific example, a universal shaft is provided at the connection between the T-shaped well hook 24 and the connecting screw 25, so that the T-shaped well hook 24 can be rotated 90 degrees to ensure that the well cover is firmly hung to prevent it from falling off during the opening process.

[0039] like Figure 1 As shown, the mobile frame 1 includes two connected frame longitudinal beams 11, the lifting mechanism 2 is installed on the frame longitudinal beams 11, and the lifting mechanism 2 corresponds to the frame longitudinal beams 11 one by one, and a pulley 3 is installed at the bottom of the frame longitudinal beam 11.

[0040] The mobile frame 1 further comprises a frame crossbeam 12, the two ends of which are respectively connected to the two frame longitudinal beams 11, and the frame crossbeam 12 is retractable so that the two frame longitudinal beams 11 can be moved closer to or farther from each other, thereby being able to adapt to manhole covers of different lengths and manhole cover holes of different widths.

[0041] The frame cross beam 12 includes two sub-cross beams, the ends of the two sub-cross beams are respectively connected to the two frame longitudinal beams 11, and one of the two sub-cross beams is sleeved inside the other one, so that the frame cross beam 12 can be retracted.

[0042] Each of the sliding cross bars 23 includes two sub-cross bars, the ends of which are respectively connected to the two lifting longitudinal bars 21 , and one of the two sub-cross bars is sleeved inside the other one, so that the sliding cross bar 23 can be retracted.

[0043] There are two frame cross beams 12, which are arranged at the two ends of the frame longitudinal beam 11, so that the frame cross beams 12 can be located outside the manhole cover. And the length of the frame cross beams 12 can make the mobile frame 1 adapt to the width of more manhole covers.

[0044] It is understandable that in the embodiment of the present invention, the lifting part 22 in the lifting mechanism 2 adopts a hydraulic lifting structure (jack), and in some other embodiments, a lifting motor may also be used. In some embodiments, a safety valve or an overload protection device may also be provided to prevent damage to the equipment or personal injury due to overload during the lifting process. At the same time, it is possible to consider installing sensors and control systems on the mobile frame 1 or the lifting mechanism 2 to achieve automated and intelligent control of the manhole cover opening process. For example, the position and state of the manhole cover are detected by sensors, and then the working parameters of the lifting mechanism 2 are automatically adjusted by the control system to achieve more accurate and safer manhole cover opening.

[0045] In an embodiment of the present invention, when lifting the manhole cover, the hook portion of the T-shaped manhole hook 24 can be inserted into the gap of the manhole cover. Since the lifting mechanism 2 is symmetrically arranged, when the lifting portion 21 lifts the lifting longitudinal rod 22, two forces can be applied to the manhole cover. These two lifting forces acting on the manhole cover are uniform and symmetrical on the manhole cover, which can avoid the problem of excessive force on one side, thereby causing deformation of the manhole cover.

[0046] The implementation of the embodiments of the present invention has the following beneficial effects:

[0047] The present invention provides a manhole cover opening device, which can easily lift a lifting longitudinal rod through a lifting mechanism, and use the lifting force of the lifting part to overcome the weight of the manhole cover and the resistance of the manhole cover being stuck, so that the manhole cover can be easily lifted, avoiding the traditional method of opening by knocking or external force, thereby improving working efficiency and reducing safety hazards.

[0048] In the present invention, the symmetrically arranged lifting mechanisms can ensure that the two lifting forces applied to the manhole cover are balanced and symmetrical, thereby avoiding deformation of the manhole cover.

[0049] In the present invention, the telescopic design of the sliding cross bar and the frame cross beam enables the device to adapt to manhole covers of different lengths and widths, thereby improving the versatility of the device.

[0050] In the present invention, the detachable connection between the T-shaped well hook and the connecting screw and the threaded connection design between the connecting screw and the connecting hole facilitate the adjustment of the position and height of the T-shaped well hook to adapt to the position and height of different well cover gaps.

[0051] The above disclosure is only a preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A manhole cover opening device, comprising a moving frame (1) and two lifting mechanisms (2), characterized in that: The movable frame (1) is a frame-type structure, and a plurality of pulleys (3) are provided at the bottom thereof for easy movement; Two parallel lifting mechanisms (2) are symmetrically arranged on the upper part of the moving frame (1), each lifting mechanism (2) comprises two lifting parts (22) and a lifting longitudinal rod (21), the lifting longitudinal rod (21) is installed on the two lifting parts (22) and can be lifted by the lifting parts (22); the two lifting longitudinal rods (21) are parallel; Two sliding cross bars (23) are arranged on the two lifting longitudinal bars (21), and the two ends of the sliding cross bars (23) are respectively connected to the two lifting longitudinal bars (21), and a plurality of connecting holes (26) are arranged on the sliding cross bars (23), and all the connecting holes (26) are evenly spaced along the axial direction of the sliding cross bars (23). On each T-shaped well hook (24), a sliding cross bar (23) is detachably connected through the connecting holes (26); The end of the sliding cross bar (23) is slidably connected to the lifting longitudinal bar (21), so that the sliding cross bar (23) can slide in the axial direction of the lifting longitudinal bar (21); The lifting longitudinal rod (21) is connected with a T-shaped well hook (24), and the hook portion of the T-shaped well hook (24) is used to extend into the gap of the well cover.

2. The manhole cover opening device according to claim 1, characterized in that: The T-shaped well hook (24) is connected with a connecting screw (25), and the connecting hole (26) is a threaded hole. The connecting hole (26) is adapted to the connecting screw (25), so that the connecting screw (25) can be threadedly connected with the connecting hole (26) to adjust the head height of the T-shaped well hook (24).

3. The manhole cover opening device according to claim 2, characterized in that: The T-shaped well hook (24) is detachably connected to the connecting screw rod (25), which is convenient for disassembly before installing the T-shaped well hook (24), and for connecting the T-shaped well hook (24) to the connecting screw rod (25) after the T-shaped well hook (24) is in place.

4. The manhole cover opening device according to claim 3, characterized in that: A universal shaft is provided at the connection between the T-shaped well hook (24) and the connecting screw rod (25), so that the T-shaped well hook (24) can be rotated 90 degrees to ensure that the well cover is securely hung.

5. The manhole cover opening device according to claim 3 or 4, characterized in that: The mobile frame (1) comprises two connected frame longitudinal beams (11), a lifting mechanism (2) is mounted on the frame longitudinal beams (11), and the lifting mechanism (2) corresponds to the frame longitudinal beams (11) one by one, and a pulley (3) is mounted at the bottom of the frame longitudinal beams (11).

6. The manhole cover opening device according to claim 5, characterized in that: The mobile frame (1) also includes a frame crossbeam (12), the two ends of which are respectively connected to the two frame longitudinal beams (11), and the frame crossbeam (12) is retractable so that the two frame longitudinal beams (11) can move closer to or farther from each other.

7. The manhole cover opening device according to claim 6, characterized in that: The frame crossbeam (12) comprises two sub-crossbeams, the ends of the two sub-crossbeams are respectively connected to the two frame longitudinal beams (11), and one of the two sub-crossbeams is sleeved inside the other one, so that the frame crossbeam (12) can be retracted.

8. The manhole cover opening device according to claim 7, characterized in that: Each sliding cross bar (23) comprises two sub-cross bars, the ends of which are respectively connected to the two lifting longitudinal bars (21), and one of the two sub-cross bars is sleeved inside the other one, so as to realize the retractability of the sliding cross bar (23).

9. The manhole cover opening device according to claim 8, characterized in that: The number of the frame cross beams (12) is two, which are respectively arranged at the two ends of the frame longitudinal beam (11), so that the frame cross beam (12) can be located outside the manhole cover.

10. The manhole cover opening device according to claim 9, characterized in that: The lifting part (22) in the lifting mechanism (2) adopts a hydraulic lifting structure or a lifting motor.

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