Lever type well lid opening device

Abstract

The utility model discloses a lever type well lid opening device which comprises a load-bearing base. The two side supporting plates are fixed to the top surface of the bearing base, perpendicular to the plane where the bearing base is located, parallel to each other and arranged at intervals. The two ends of the first rotating shaft are located at the two side supporting plates correspondingly, and the first rotating shaft extends in the direction parallel to the plane where the bearing base is located and perpendicular to the side supporting plates and can rotate around the axis of the first rotating shaft; the connecting rod is fixed at the middle section position of the first rotating shaft and is vertical to the first rotating shaft; the first connecting piece is fixed at the first end of the connecting rod; the second connecting piece is rotationally connected with the first connecting piece, and the rotating axis is perpendicular to the connecting rod and parallel to the plane where the bearing base is located; the upper end of the cover hooking device is connected to the second connecting piece in a rotatable mode, and the rotation axis of the cover hooking device perpendicularly intersects with the rotation axis of the second connecting piece. The use is convenient and labor-saving.

Description

Technical Field

[0001] The utility model relates to a lever-type manhole cover opening device. Background Art

[0002] A valve well is a pit (or well) similar to a small room where valves of underground pipelines and underground pipes (such as tap water, heating, oil, natural gas pipelines, etc.) are located. In order to facilitate the opening and closing of part of the pipeline network or maintenance work, a valve is installed and arranged in this pit. It is convenient for regular inspection, cleaning and dredging of pipelines to prevent pipeline blockage. This pit is called a valve well.

[0003] The manhole above the well chamber is convenient for operators to enter, and is generally sealed with a manhole cover. Commonly used valve well covers include cement concrete manhole covers, cast iron manhole covers, etc. Cement concrete manhole covers need to be cleaned before they can be opened. Because the cement concrete manhole cover has not been opened for a long time, the gap between the manhole cover surface and the manhole cover base will be filled with dust and sediment, making the manhole cover difficult to open. At this time, if you want to open the manhole cover, you must first clean out the dust and sediment between the manhole cover surface and the manhole cover base (the winter in the north is relatively cold, and frozen soil may occur. You need to use tools to knock around the manhole cover to loosen it), and then use a hook to hook the lifting hole of the manhole cover to open it. Cast iron manhole covers are often used on asphalt pavements. Due to the special nature of the road surface, when vehicles pass by, the asphalt surface layer will be crushed, causing local asphalt gravel to flow into the gap between the well ring and the manhole cover, making it difficult to open. Utility Model Content

[0004] The utility model provides a lever-type manhole cover opening device, which can save labor and open the manhole cover conveniently.

[0005] The technical solution of the utility model is as follows: A lever-type manhole cover opening device, comprising:

[0006] load-bearing base;

[0007] Two side support plates are fixed on the top surface of the load-bearing base, perpendicular to the plane of the load-bearing base, parallel to each other and spaced apart;

[0008] A first rotating shaft, with both ends located at the two side support plates, extending in a direction parallel to the plane of the load-bearing base and perpendicular to the side support plates, and capable of rotating around its own axis;

[0009] a connecting rod, fixed at a middle section of the first rotating shaft and perpendicular to the first rotating shaft;

[0010] a first connecting member, fixed to the first end of the connecting rod;

[0011] A second connecting member is hingedly connected to the first connecting member, and the rotation axis of the second connecting member is perpendicular to the connecting rod and parallel to the plane in which the load-bearing base is located.

[0012] A hook cover is rotatably connected to the second connecting member at the upper end, and the rotation axis of the hook cover is perpendicular to the rotation axis of the second connecting member.

[0013] Optionally, the distance from the first end of the connecting rod to the first rotating shaft is less than the distance from the second end of the connecting rod to the first rotating shaft.

[0014] Optionally, the lever-type manhole cover opening device further comprises a handle detachably connected to the second end of the connecting rod.

[0015] Optionally, the load-bearing base comprises a first flat plate and two second flat plates, which are arranged opposite to each other and fixed at the edge positions of the bottom surface of the first flat plate.

[0016] Optionally, the lever-type manhole cover opening device further comprises two bearing sleeves corresponding to the two side support plates and two bearings corresponding to the two bearing sleeves, the two side support plates are provided with mounting holes opposite to each other, the bearing sleeves are fixed in the corresponding mounting holes, the outer ring of the bearing is fixed on the corresponding bearing sleeve, and the inner ring of the bearing is fixedly connected to the corresponding end of the first rotating shaft.

[0017] Optionally, the first connecting member is U-shaped, the bottom of the U-shaped first connecting member is fixedly connected to the first end of the connecting rod, each side of the U-shaped first connecting member is provided with a through hole, the second connecting member is T-shaped, the top of the T-shaped second connecting member is provided with a through hole extending along the extension direction of the top of the T-shaped second connecting member, the top of the T-shaped second connecting member is located between the two sides of the U-shaped first connecting member, and the lever-type manhole cover opening device further comprises a second rotating shaft penetrating through the through holes in the sides of the U-shaped first connecting member and the through hole in the top of the T-shaped second connecting member; the second rotating shaft can rotate around its own axis, and / or the T-shaped second connecting member can rotate around the second rotating shaft.

[0018] Optionally, the lever-type manhole cover opening device further comprises a U-shaped limiting member, the opening of the U-shaped limiting member faces downward, the two ends of the U-shaped limiting member are fixed on the two side support plates respectively, and the middle part of the U-shaped limiting member is used for limiting the rotation angle of the connecting rod.

[0019] Optionally, the hook cover is in the shape of a chevron.

[0020] The user places the lever type manhole cover opening device near the manhole cover, the cover hooker is opposite to the opening of the manhole cover, since the cover hooker has two rotation degrees of freedom in perpendicular directions (one rotation degree of freedom is provided by the second connecting piece), and the first connecting piece has one rotation degree of freedom, no matter the distance between the lever type manhole cover opening device and the manhole cover is large or small, the user can easily insert the end of the cover hooker into the opening of the manhole cover, and then rotate the cover hooker, so that the cover hooker stably hooks the manhole cover, the second end of the connecting rod is pressed, and the manhole cover is opened by the lever principle. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the front view of the lever type manhole cover opening device of the utility model.

[0022] Figure 2 is the left view of the lever type manhole cover opening device of the utility model.

[0023] Figure 3 is the top view of the lever type manhole cover opening device of the utility model, wherein the limiting piece is omitted.

[0024] The reference signs are as follows: 1, bearing base; 11, first flat plate part; 12, second flat plate part; 2, side support plate; 21, mounting hole; 22, bearing sleeve; 23, bearing; 3, first rotating shaft; 4, connecting rod; 5, handle; 6, first connecting piece; 7, second rotating shaft; 8, second connecting piece; 9, cover hooker; 10, limiting piece. DETAILED DESCRIPTION

[0025] The utility model will be further described in connection with specific embodiments, but the protection scope of the utility model is not limited to this.

[0026] Reference Figures 1 to 3 The embodiment of the utility model provides a lever type manhole cover opening device, comprising:

[0027] The bearing base 1 is fixed on the top surface of the bearing base 1, perpendicular to the plane where the bearing base 1 is located, and is arranged in parallel and spaced apart from each other.

[0028] Two side support plates 2 are fixed on the top surface of the bearing base 1, perpendicular to the plane where the bearing base 1 is located, and are arranged in parallel and spaced apart from each other.

[0029] The first rotating shaft 3 is located at both ends of the two side support plates 2 respectively, extends along the direction parallel to the plane where the bearing base 1 is located and perpendicular to the side support plate 2, and can rotate around its axis.

[0030] The connecting rod 4 is fixed (for example, in a welded manner) at the middle segment position of the first rotating shaft 3, and is perpendicular to the first rotating shaft 3.

[0031] The first connecting piece 6 is fixed at the first end of the connecting rod 4.

[0032] The second connecting member 8 is hinged to the first connecting member 6, and the rotation axis is perpendicular to the connecting rod 4 and parallel to the plane of the load-bearing base 1;

[0033] The hook cover 9 is connected to the second connecting member 8 at its upper end in a rotatable manner (for example, the second connecting member 8 provides a threaded groove, and an external thread is formed at the upper end of the hook cover 9, and the two are threadedly connected), and the rotation axis of the hook cover 9 intersects the rotation axis of the second connecting member 8 at right angles.

[0034] During use, after the user places the lever-type manhole cover opening device near the manhole cover, the hook cover device 9 is aligned with the manhole cover opening (which is cross-shaped, with a major axis and a minor axis). Because the hook cover device 9 has two rotational degrees of freedom in perpendicular directions (one of which is provided by the second connecting member 8), and the first connecting member 6 has one rotational degree of freedom, the user can easily insert the end of the hook cover device 9 into the manhole cover opening, regardless of the distance between the lever-type manhole cover opening and the manhole cover. The user then rotates the hook cover device 9 so that the free end of the hook cover device 9 first penetrates under the manhole cover along the major axis of the manhole cover opening, and then rotates the hook cover device 9 so that its free end extends laterally along the minor axis of the manhole cover opening, thereby firmly hooking the manhole cover. The user then presses the second end of the connecting rod 4, leveraging the principle of leverage to open the manhole cover. Furthermore, since pressing is easier than lifting, the user does not need to precisely control the distance between the lever-type manhole cover opening and the manhole cover, making operation convenient and time-saving.

[0035] The greater the distance between the user's hand gripping position and the first rotation axis 3 , the less effort the user will have.

[0036] Optionally, the distance from the first end of the connecting rod 4 to the first rotating shaft 3 is smaller than the distance from the second end of the connecting rod 4 to the first rotating shaft 3 .

[0037] Optionally, the device further includes a handle 5 detachably connected to the second end of the connecting rod 4. The handle 5 increases the distance between the user's grip and the first rotating shaft 3, thereby reducing effort. Furthermore, the handle 5 is detachable, reducing the space occupied by the lever-type manhole cover opening device.

[0038] Specifically, the handle 5 is threadedly connected to the connecting rod 4 .

[0039] Optionally, the load-bearing base 1 includes a first flat plate portion 11 and two second flat plate portions 12 . The two second flat plate portions 12 are opposite to each other, spaced apart, and fixed at the edge of the bottom surface of the first flat plate portion 11 .

[0040] Figure 1 In the illustrated embodiment, the second flat plate portion 12 is parallel to the side support plate 2. In other embodiments, the second flat plate portion 12 is perpendicular to the side support plate 2.

[0041] The load-bearing base 1 is convenient to be placed on the pedal of the electric vehicle without shaking, which makes the lever-type manhole cover opening device easy to carry and increases maneuverability.

[0042] Optionally, the lever-type manhole cover opening device also includes two bearing sleeves 22 arranged in a one-to-one correspondence with the two side support plates 2, and two bearings 23 arranged in a one-to-one correspondence with the two bearing sleeves 22. The two side support plates 2 are provided with mounting holes 21 opposite to each other, the bearing sleeves 22 are fixed at the corresponding mounting holes 21, the outer ring of the bearing 23 is fixed on the corresponding bearing sleeve 22, and the inner ring of the bearing 23 is fixedly connected to the corresponding end of the first rotating shaft 3.

[0043] Specifically, the bearing sleeve 22 is fixed to the surface of the side support plate 2 facing away from the other side support plate 2 by bolts, with the opening of the bearing sleeve 22 arranged opposite the mounting hole 21, and the bearing sleeve 22 surrounds the outer ring of the bearing 23. The outer ring of the bearing 23 is fixed to the inner circumference of the bearing sleeve 22 by another bolt.

[0044] Optionally, the first connecting member 6 is U-shaped, the bottom of the U-shaped first connecting member 6 is fixedly connected to the first end of the connecting rod 4 (for example, it is connected by welding), and a through hole is opened on each of the two sides of the U-shaped first connecting member 6. The second connecting member 8 is T-shaped, and the top of the T-shaped second connecting member 8 is opened along the extension direction of its top. The top of the T-shaped second connecting member 8 is located between the two sides of the U-shaped first connecting member 6. The lever-type manhole cover opening device also includes a second rotating shaft 7 passing through the through hole on the side of the U-shaped first connecting member 6 and the through hole at the top of the T-shaped second connecting member 8; the second rotating shaft 7 can rotate around its own axis, and / or the T-shaped second connecting member 8 can rotate around the second rotating shaft 7.

[0045] Specifically, in this embodiment, a gap is left between the second shaft 7 (cylindrical, a pin) and the through holes on both sides of the U-shaped first connecting member 6, so that the second shaft 7 can rotate freely in both directions. Figure 1 A gap is left between the through hole (which extends in the left-right direction) and the second rotating shaft 7, so that the T-shaped second connecting member 8 can rotate freely in both directions around the second rotating shaft 7.

[0046] Optionally, a U-shaped stopper 10 is further included, with its opening facing downward. The two ends of the U-shaped stopper 10 are respectively fixed to the two side support plates 2, and the middle portion of the U-shaped stopper 10 is used to limit the rotation angle of the connecting rod 4. The U-shaped stopper 10 can prevent the connecting rod 4 from rotating too much, avoid collisions, and increase safety.

[0047] Optionally, the hook cover device 9 is in the shape of a Chinese character "士". The upper horizontal side of the hook cover device 9 of the Chinese character "士" is longer than the lower horizontal side, which limits the depth of insertion of the hook cover device 9 under the manhole cover. In other embodiments, the upper horizontal side is equal to the lower horizontal side.

[0048] The various embodiments of the present invention are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0049] The scope of protection of the present invention is not limited to the above-described embodiments. Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the scope and spirit of the present invention. If such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A lever-type manhole cover opening device, characterized in that: Comprising: A load-bearing base; Two side support plates, fixed on the top surface of the load-bearing base, perpendicular to the plane where the load-bearing base is located, parallel to each other and spaced apart; A first rotating shaft, with both ends located at the two side support plates respectively, extending in a direction parallel to the plane where the load-bearing base is located and perpendicular to the side support plates, and capable of rotating around its own axis; A connecting rod, fixed at the middle position of the first rotating shaft and perpendicular to the first rotating shaft; A first connecting member, fixed at the first end of the connecting rod; A second connecting member, rotatably connected to the first connecting member, with the rotation axis perpendicular to the connecting rod and parallel to the plane where the load-bearing base is located; A hook cover device, with the upper end rotatably connected to the second connecting member, and the rotation axis of the hook cover device perpendicularly intersecting the rotation axis of the second connecting member.

2. The lever-type manhole cover opening device according to claim 1, characterized in that: The distance from the first end of the connecting rod to the first rotating shaft is less than the distance from the second end of the connecting rod to the first rotating shaft.

3. The lever-type manhole cover opening device according to claim 1, characterized in that: Further comprising: A handle detachably connected to the second end of the connecting rod.

4. The lever-type manhole cover opening device according to claim 1, characterized in that: The load-bearing base includes a first flat plate portion and two second flat plate portions, and the two second flat plate portions are opposite to each other, spaced apart and fixed at the edge positions of the bottom surface of the first flat plate portion.

5. The lever-type manhole cover opening device according to claim 1, characterized in that: The lever-type manhole cover opening device further includes two bearing sleeves corresponding to the two side support plates respectively and two bearings corresponding to the two bearing sleeves respectively. Installation holes opposite to each other are provided on the two side support plates, the bearing sleeves are fixed at the corresponding installation holes, the outer rings of the bearings are fixed on the corresponding bearing sleeves, and the inner rings of the bearings are fixedly connected to the corresponding end portions of the first rotating shaft.

6. The lever-type manhole cover opening device according to claim 1, characterized in that: The first connecting member is U-shaped. The bottom of the U-shaped first connecting member is fixedly connected to the first end of the connecting rod. A through hole is provided on each of the two side portions of the U-shaped first connecting member. The second connecting member is T-shaped. A through hole extending along the extending direction of its top is provided on the top of the T-shaped second connecting member. The top of the T-shaped second connecting member is located between the two side portions of the U-shaped first connecting member. The lever-type manhole cover opening device further includes a second rotating shaft passing through the through hole on the side portion of the U-shaped first connecting member and the through hole at the top of the T-shaped second connecting member; the second rotating shaft can rotate around its own axis, and / or, the T-shaped second connecting member can rotate around the second rotating shaft.

7. The lever-type manhole cover opening device according to claim 1, characterized in that: Further comprising a U-shaped limiting member, with the opening of the U-shaped limiting member facing downwards, and the two end portions of the U-shaped limiting member are respectively fixed on the two side support plates, and the middle portion of the U-shaped limiting member is used to limit the rotation angle of the connecting rod.

8. The lever-type manhole cover opening device according to claim 1, characterized in that: The hook cover device is in a cross shape.

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