Tool for opening inspection well cover

Abstract

The utility model provides a tool for opening an inspection well lid, which comprises a prying head structure used for being connected with a well lid, the upper end of the prying head structure is connected with a prying bar structure, the upper end of the prying bar structure is rotatably connected with a lever structure, one side of the prying bar structure is provided with a supporting structure, and the upper end of the supporting structure is detachably connected with the lever structure. The lever structure can rotate with the upper end of the supporting structure as a fulcrum, the height of the supporting structure is equal to or larger than that of the pinch bar structure, the prying head structure is connected with the well lid, one end of the lever structure is pressed downwards, the supporting structure serves as the fulcrum, the pinch bar structure connected with the other end of the lever structure can be pried, and the prying head structure and the well lid can be easily pried upwards. Time and labor are saved.

Description

Technical Field

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

[0002] Manhole covers are widely used in urban construction. Manhole covers are generally provided with handle holes, which are used in conjunction with tools for opening manhole covers to open the manhole covers. There are roughly two or three common styles of handle holes, and the most common way to open the manhole cover is to use a T-shaped hook as a tool to apply force upward to pull the manhole cover up, which places high physical requirements on the operators and consumes a lot of physical energy during the operation. It may also be difficult to open the manhole cover during use, and in practical operations, the T-shaped hook may be difficult to adapt to the handle holes of some manhole covers, causing some manhole covers to be difficult to open or damage to the manhole cover and the manhole seat during the opening process. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a tool for opening a manhole cover, which can solve the problem that the T-hook has high physical requirements on the operator.

[0004] To this end, the utility model adopts the following technical solutions:

[0005] A tool for opening a manhole cover comprises a pry head structure for connecting the manhole cover, the upper end of the pry head structure is connected to a pry bar structure, the upper end of the pry bar structure is rotatably connected to a lever structure, a support structure is provided on one side of the pry bar structure, the upper end of the support structure is detachably connected to the lever structure, the lever structure can rotate with the upper end of the support structure as a fulcrum, and the height of the support structure is equal to or higher than the height of the pry bar structure.

[0006] On the basis of adopting the above technical solutions, the present invention can also adopt the following further technical solutions, or use these further technical solutions in combination:

[0007] The pry head structure comprises a first pry head, and the first pry head is in a hook shape.

[0008] The pry head structure comprises a first pry head, and the first pry head is in a straight rod shape.

[0009] The pry bar structure includes a first pry bar, and the lever structure includes a first lever. The upper end of the first pry bar is rotatably connected to the end of the first lever, and the lower end of the first pry bar is connected to the first pry head.

[0010] The pry bar structure includes a first pry bar, a second pry bar and a third pry bar, and the lever structure includes a first lever, the upper end of the first pry bar is rotatably connected to the end of the first lever, the lower end of the first pry bar is rotatably connected to the second pry bar, the lower end of the second pry bar is threadedly connected to the third pry bar, and the upper end of the first pry head is rotatably connected to the lower end of the third pry bar.

[0011] The pry head structure also includes a second pry head, the lower end of which is rotatably connected to the lower end of the third pry bar, the upper end of which is bent to one side to form a step portion, and the plane where the second pry head is located is parallel to the plane where the first pry head is located.

[0012] The lever structure includes a first lever, which is provided with a plurality of positioning holes. The support structure includes a support seat, the upper end of the support seat is detachably connected to the first lever through one of the positioning holes, the bottom of the support seat is placed on the ground to provide support for the lever structure, and the first lever can rotate with the upper end of the support seat as a fulcrum.

[0013] The lever structure includes a first lever, which is provided with a plurality of positioning holes. The support structure includes a support seat and a lifting rod. The support seat is an internally hollow sleeve structure. The lifting rod is sleeved inside the support seat. The surface of the support seat is provided with a plurality of vertical first connecting holes. The surface of the lifting rod is provided with a plurality of vertical second connecting holes. One of the second connecting holes is aligned with one of the first connecting holes and a first pin is fixed in both. The lifting rod is fixed to the inside of the support seat by the first pin. The upper end of the lifting rod is detachably connected to the first lever through one of the positioning holes. The bottom of the sleeve seat is placed on the ground to provide support for the lever structure. The first lever can rotate with the upper end of the lifting rod as a fulcrum.

[0014] The lever structure includes a first lever and a multifunctional extended lever, one end of the first lever is rotatably connected to the pry rod structure, one end of the multifunctional extended lever is threadedly connected to the other end of the first lever, and the other end of the multifunctional extended lever is warped to form a prying portion.

[0015] The first pry head and the second pry head are rotatably connected to the lower end of the third pry bar through a second pin, the first lever is rotatably connected to the upper end of the first pry bar through a third pin, and the first lever is rotatably connected to the upper end of the supporting structure through a fourth pin.

[0016] Compared with the prior art, the utility model has the following advantages and beneficial effects: the manhole cover is connected by the pry head structure, one end of the lever structure is pressed down, and the support structure is used as a fulcrum to pry the pry rod structure connected to the other end of the lever structure, so that the pry head structure and the manhole cover can be easily pried up, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a specific embodiment of the utility model.

[0018] Figure 2 It is a structural schematic diagram of the first hook-shaped prying head of the utility model.

[0019] Figure 3 It is a structural schematic diagram of the straight rod-shaped first prying head of the utility model.

[0020] Figure 4 It is a structural schematic diagram of the pry bar structure of the utility model.

[0021] Figure 5 It is a side view of the first pry bar of the utility model.

[0022] Figure 6 It is a side view of the third pry bar of the utility model.

[0023] Figure 7 It is a structural schematic diagram of the support structure of the utility model.

[0024] Figure 8-Figure 10 This is a schematic diagram of the structure of a common manhole cover handle hole. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the preferred implementation scheme of the present utility model is described below in conjunction with specific embodiments. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent elements with the same or similar functions. However, it should be understood that the accompanying drawings are only used for illustrative purposes and cannot be understood as limitations on the present utility model. In order to better illustrate the present embodiment, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted, and the positional relationship described in the accompanying drawings is only used for illustrative purposes and cannot be understood as limitations on the present utility model.

[0026] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0027] The utility model provides a tool for opening a manhole cover, comprising a pry head structure 1 for connecting the manhole cover, the upper end of the pry head structure 1 is connected to a pry bar structure 2, the upper end of the pry bar structure 2 is rotatably connected to a lever structure 3, a support structure 4 is provided on one side of the pry bar structure 2, the upper end of the support structure 4 is detachably connected to the lever structure 2, the lever structure 2 can rotate with the upper end of the support structure 4 as a fulcrum, and the height of the support structure 4 is equal to or higher than the height of the pry bar structure 2.

[0028] like Figure 1 As shown, the utility model adopts the lever principle, and by pressing down one end of the lever structure 3, with the upper end of the support structure 4 serving as a fulcrum, the pry rod structure and the pry head structure connected to the other end of the lever structure 3 can be easily pulled upward, thereby prying the manhole cover connected to the pry head structure upward.

[0029] like Figure 7 A type of manhole cover shown in the figure has handle holes including a first type of handle hole 91. The first type of handle hole 91 is a long hole with semicircular ends. The centers of the two semicircles are located on the circumference of the manhole cover, and a circular hole is vertically intersected in the middle of the long hole. The first type of handle hole 91 is located at the edge of the manhole cover and communicates with the inside of the manhole.

[0030] like Figure 8 A type of manhole cover shown in the figure has handle holes including a second type of handle hole 92 and a third type of handle hole 93. The second type of handle hole 92 is a long hole with semicircular ends, and the line connecting the centers of the two semicircles passes through the center of the manhole cover. The second type of handle hole 92 is located at the edge of the manhole cover, but is only recessed to a certain depth on the surface of the manhole cover and is not connected to the well below the manhole cover. A horizontal bar connected to the upper surface of the manhole cover is provided in the middle of the second type of handle hole 92 (the black filled area in the figure). The third type of handle hole 92 is a square handle hole that protrudes from the edge of the manhole cover.

[0031] like Fig. 9 A type of manhole cover shown has handle holes including fourth-type handle holes 94. The fourth-type handle holes 94 are circular handle holes. The fourth-type handle holes 94 are located at the edge of the manhole cover and communicate with the manhole.

[0032] In one embodiment, the pry head structure 1 includes a first pry head 11 , and the first pry head 11 is in a hook shape.

[0033] In one embodiment, the pry head structure 1 includes a first pry head 11 , and the first pry head 11 is in the shape of a straight rod.

[0034] In one embodiment, the pry bar structure 2 includes a first pry bar 21 , the lever structure 3 includes a first lever 31 , the upper end of the first pry bar 21 is rotatably connected to the end of the first lever 31 , and the lower end of the first pry bar 21 is connected to the first pry head 11 .

[0035] The combination of the above embodiments is not shown in the accompanying drawings of the present utility model, that is, one end of the first lever 31 is connected to the first pry bar 21, and the lower end of the first pry bar 21 is connected to the first pry head 11 in a hook shape or a straight rod shape. The first pry head 11 in a hook shape can hang on the horizontal bar on the second type of handle hole 92, or can be inserted into the first type of handle hole 91 in parallel, and then rotated at a certain angle to hook the bottom of the manhole cover. The first pry head 11 in a straight rod shape can be directly inserted into the first type of handle hole 91 / the second type of handle hole 92 / the third type of handle hole 93 / the fourth type of handle hole 94. By pressing one end of the first lever 31, the upper end of the supporting structure 4 is used as a fulcrum to pry up the first pry bar 21 and the first pry head 11 at the other end of the first lever 31, thereby prying up the manhole cover connected to the first pry head. If the first lever 31 of the present combination is not long enough, a greater force may be required, and the first pry head 11 is a simple shape and may slip out of the handle hole, causing slipping during the prying process.

[0036] In one embodiment, the pry bar structure 2 includes a first pry bar 21, a second pry bar 22 and a third pry bar 23, the lever structure 3 includes a first lever 31, the upper end of the first pry bar 21 is rotatably connected to the end of the first lever 31, the lower end of the first pry bar 21 is rotatably connected to the second pry bar 22, the lower end of the second pry bar 22 is threadedly connected to the third pry bar 23, and the upper end of the first pry head 11 is rotatably connected to the lower end of the third pry bar 23, as shown in FIG. Figure 5 As shown, the upper end of the first pry bar 21 is a Y-shaped connector, the first lever 31 is located in the Y-shaped connector of the first pry bar 21, and the lower end of the first pry bar 21 is a hollow connector. Figure 4 As shown, the upper end of the second pry bar 22 is located in the hollow connecting portion and can rotate in the hollow connecting portion, and the lower end of the second pry bar 22 is a nut end. Figure 6 As shown, the upper end of the third pry bar 23 is a threaded rod end that can be connected to the nut end, and the lower end of the third pry bar 23 is a Y-shaped connector.

[0037] In one embodiment, the pry head structure 1 further includes a second pry head 12, the lower end of the second pry head 12 is rotatably connected to the lower end of the third pry bar 23, the upper end of the second pry head 12 is bent to one side to form a step portion 121, and the plane where the second pry head 12 is located is parallel to the plane where the first pry head 11 is located. Figure 2 and Figure 3 As shown, the connection structures of the second prying head 12 and the first hook-shaped prying head 11 and the first straight rod-shaped prying head 11 are respectively shown. The second prying head 12 and the arbitrary prying head 11 are both located inside the Y-shaped connector of the third prying rod 23.

[0038] In actual use of the combination of the above embodiments, the first pry head 11 and the second pry head 12 are first vertically placed into the handle hole of the appropriate type and extended into the well, and the second pry rod 22 is manually rotated to drive the first pry head 11 and the second pry head 12 in the well to turn. At this time, one end of the first lever 31 is pressed down, and the step portion 121 of the second pry head 12 will be blocked by the lower surface of the well cover, thereby forming a Figure 1 In the schematic diagram of a specific embodiment shown in FIG. 1 , the first prying head 11 and the second prying head 12 are hung horizontally on the lower surface of the manhole cover, fully contacting the manhole cover to avoid slipping during the prying process.

[0039] In one of the embodiments, the lever structure 3 includes a first lever 31, a plurality of positioning holes 311 are provided on the first lever 31, and the support structure 4 includes a support seat 41. The upper end of the support seat 41 is detachably connected to the first lever 31 through one of the positioning holes 311, and the bottom of the support seat 41 is placed on the ground to provide support for the lever structure 3. The first lever 31 can rotate with the upper end of the support seat 41 as a fulcrum. In this embodiment, the support seat 41 is a fixed-height support seat, but the position of the support seat 41 on the first lever 31 can be adjusted.

[0040] In one embodiment, the lever structure 3 includes a first lever 31, which is provided with a plurality of positioning holes 311, and the support structure 4 includes a support seat 41 and a lifting rod 42. The support seat 41 is an internally hollow sleeve structure, and the lifting rod 42 is sleeved inside the support seat 41. The surface of the support seat 41 is provided with a plurality of vertical first connecting holes 411, and the surface of the lifting rod 42 is provided with a plurality of vertical second connecting holes 421, one of the second connecting holes 421 is aligned with one of the first connecting holes 411, and a first latch 5 is fixed therein, and the lifting rod 42 is fixed to the inside of the support seat 41 by the first latch 5, and the upper end of the lifting rod 42 is detachably connected to the first lever 31 through one of the positioning holes 311, and the bottom of the sleeve seat 41 is placed on the ground to provide support for the lever structure 3, and the first lever 31 can rotate with the upper end of the lifting rod 42 as a fulcrum. In this embodiment, the height of the support seat 41 can be adjusted.

[0041] In one of the embodiments, the lever structure 3 includes a first lever 31 and a multifunctional extension lever 32. One end of the first lever 31 is rotatably connected to the pry rod structure 2. One end of the multifunctional extension lever 32 is threadedly connected to the other end of the first lever 31. The other end of the multifunctional extension lever 32 is upwardly tilted to form a prying portion 321. The multifunctional extension rod 32 can lengthen the first lever 31, which is more labor-saving. At the same time, the prying portion 321 of the multifunctional extension rod 32 is also suitable for prying some handle holes.

[0042] The first pry head 11 and the second pry head 12 are rotatably connected to the lower end of the third pry bar 23 through the second pin 6, the first lever 31 is rotatably connected to the upper end of the first pry bar 21 through the third pin 7, and the first lever 31 is rotatably connected to the upper end of the supporting structure 4 through the fourth pin 8.

[0043] According to the description and drawings of the utility model, a person skilled in the art can easily manufacture or use a tool for opening a manhole cover of the utility model, and can produce the positive effects recorded in the utility model.

[0044] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present utility model and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two mechanisms, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0045] In the description of the present invention, it should be understood that the terms "one end", "the other end", "outside", "inside", "horizontal", "end", "length", "outer end", "left", "right" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the mechanism or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. The terms "first" and "second" are also used only for the simplicity of description, and do not indicate or imply relative importance.

[0046] Furthermore, in practicing the claims of the present invention, those skilled in the art may understand and affect variations to the disclosed embodiments by studying the drawings, disclosure, and appended claims. In addition, in the claims and the specification, words such as "comprises", "comprising", etc. do not exclude other elements or steps, and non-plural nouns do not exclude their plural forms.

[0047] The above is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made according to the present invention are covered by the scope of the claims of the present invention and will not be listed one by one here.

Claims

1. A tool for opening a manhole cover, characterized in that: The invention comprises a pry head structure (1) for connecting a manhole cover, wherein the upper end of the pry head structure (1) is connected to a pry bar structure (2), the upper end of the pry bar structure (2) is rotatably connected to a lever structure (3), a support structure (4) is provided on one side of the pry bar structure (2), the upper end of the support structure (4) is detachably connected to the lever structure (3), the pry bar structure (2) can rotate with the upper end of the support structure (4) as a fulcrum, and the height of the support structure (4) is equal to or higher than the height of the pry bar structure (2).

2. A tool for opening a manhole cover according to claim 1, characterized in that: The pry head structure (1) comprises a first pry head (11), wherein the first pry head (11) is in a hook shape.

3. A tool for opening a manhole cover according to claim 1, characterized in that: The pry head structure (1) comprises a first pry head (11), wherein the first pry head (11) is in the shape of a straight rod.

4. A tool for opening a manhole cover according to claim 2, characterized in that: The pry bar structure (2) comprises a first pry bar (21), and the lever structure (3) comprises a first lever (31), the upper end of the first pry bar (21) is rotatably connected to the end of the first lever (31), and the lower end of the first pry bar (21) is connected to the first pry head (11).

5. A tool for opening a manhole cover according to claim 2 or 3, characterized in that: The pry bar structure (2) comprises a first pry bar (21), a second pry bar (22) and a third pry bar (23); the lever structure (3) comprises a first lever (31); the upper end of the first pry bar (21) is rotatably connected to the end of the first lever (31); the lower end of the first pry bar (21) is rotatably connected to the second pry bar (22); the lower end of the second pry bar (22) is threadedly connected to the third pry bar (23); and the upper end of the first pry head (11) is rotatably connected to the lower end of the third pry bar (23).

6. A tool for opening a manhole cover according to claim 4, characterized in that: The pry head structure (1) further comprises a second pry head (12), the lower end of the second pry head (12) being rotatably connected to the lower end of the third pry rod (23), the upper end of the second pry head (12) being bent to one side to form a step portion (121), and the plane where the second pry head (12) is located is parallel to the plane where the first pry head (11) is located.

7. A tool for opening a manhole cover according to claim 1, characterized in that: The lever structure (3) comprises a first lever (31), the first lever (31) being provided with a plurality of positioning holes (311), the support structure (4) comprising a support seat (41), the upper end of the support seat (41) being detachably connected to the first lever (31) via one of the positioning holes (311), the lower side of the support seat (41) being placed on the ground surface to provide support for the lever structure (3), and the first lever (31) being capable of rotating with the upper end of the support seat (41) as a fulcrum.

8. A tool for opening a manhole cover according to claim 1, characterized in that: The lever structure (3) comprises a first lever (31), the first lever (31) being provided with a plurality of positioning holes (311), the support structure (4) comprising a support seat (41) and a lifting rod (42), the support seat (41) being a sleeve structure with a hollow interior, the lifting rod (42) being sleeved inside the support seat (41), the surface of the support seat (41) being provided with a plurality of vertical first connecting holes (411), the surface of the lifting rod (42) being provided with a plurality of vertical second connecting holes (421), one of the second connecting holes being provided with a plurality of vertical second connecting holes (421), and the second connecting holes being provided with a plurality of vertical second second connecting holes (421). The connecting hole (421) is aligned with one of the first connecting holes (411) and a first latch (5) is fixed inside both of them; the lifting rod (42) is fixed to the inside of the support seat (41) via the first latch (5); the upper end of the lifting rod (42) is detachably connected to the first lever (31) via one of the positioning holes (311); the lower side of the support seat (41) is placed on the ground to provide support for the lever structure (3); and the first lever (31) can rotate with the upper end of the lifting rod (42) as a fulcrum.

9. A tool for opening a manhole cover according to claim 1, characterized in that: The lever structure (3) comprises a first lever (31) and a multifunctional extended lever (32); one end of the first lever (31) is rotatably connected to the pry bar structure (2); one end of the multifunctional extended lever (32) is threadedly connected to the other end of the first lever (31); and the other end of the multifunctional extended lever (32) is warped upward to form a prying portion (321).

10. A tool for opening a manhole cover according to claim 6, characterized in that: The first pry head (11) and the second pry head (12) are rotatably connected to the lower end of the third pry bar (23) via a second latch (6), the first lever (31) is rotatably connected to the upper end of the first pry bar (21) via a third latch (7), and the first lever (31) is rotatably connected to the upper end of the support structure (4) via a fourth latch (8).

Images