A portable manhole cover hooking lever assembly

Abstract

The utility model discloses a portable well lid hook takes pole subassembly relates to municipal facilities maintenance technical field, the utility model discloses a support pipe is provided with the elastic hooking subassembly at the bottom of support pipe, and the inside of support pipe is provided with the intermittent push -on subassembly, and the top of support pipe is provided with the pull subassembly, and the pull subassembly is connected together with intermittent push -on subassembly, and the outside of support pipe is provided with the guide limiting component with pull subassembly. The utility model discloses the pull subassembly to intermittent push -on subassembly is pulled, and the intermittent push -on subassembly of continuous movement can intermittently push the beating end of elastic hooking subassembly downward, and the beating end is continuously reset under the pull of elastic end and beats the well lid, and makes the well lid vibrate, the above -mentioned setting makes the rust layer between well lid and well mouth can be shaken down, thereby making subsequent pull subassembly be relatively easy when hooking the well lid through support pipe and elastic hooking subassembly.

Description

Technical Field

[0001] This utility model belongs to the field of municipal facility maintenance technology, and specifically relates to a portable manhole cover hook assembly. Background Technology

[0002] In the urban infrastructure maintenance system, manhole covers are key opening and closing components of underground pipe networks. Their ability to open quickly and safely directly determines the efficiency of pipeline maintenance and dredging operations. Currently, the mainstream manhole cover opening tools adopt a single-hook mechanical structure. Its working principle is as follows: the hook body is inserted into the pre-set lifting hole of the manhole cover, and the cover is separated by leveraging the operator's arm strength.

[0003] Over time, the interface between the manhole cover and the manhole opening is subjected to the combined effects of rainwater erosion and oxidation corrosion, gradually forming a dense rust layer on the surface of the metal substrate. This rust layer not only significantly increases the static friction coefficient of the interface but also causes metallurgical adhesion between the cover and the manhole frame on active metal manhole covers such as cast iron, resulting in a "rust-locked" phenomenon. When using traditional single-hook tools to remove rust-locked manhole covers, operators often need to apply several times the pulling force of normal conditions to pull the cover out of the manhole, making the operation quite difficult. Utility Model Content

[0004] To address the problem of the difficulty in retrieving "rusted" manhole covers using hooks, this utility model proposes a portable manhole cover hook assembly to overcome the aforementioned technical problems in existing related technologies.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a portable manhole cover hook rod assembly, including a support tube, an elastic hooking component at the bottom end of the support tube, an intermittent pushing component inside the support tube, a pulling component at the top end of the support tube, the pulling component being connected to the intermittent pushing component, and a guide limiting component corresponding to the pulling component on the outside of the support tube.

[0007] The pulling component pulls the intermittent pushing component, causing the intermittent pushing component to intermittently push the elastic hook component. At the same time, the elastic hook component continuously strikes and vibrates the manhole cover under the elastic force of its elastic end.

[0008] Furthermore, the elastic hook assembly includes a mounting cylinder, which is fixedly mounted on the bottom end of the support tube. A hook frame is fixedly connected to the bottom end of the mounting cylinder. A T-shaped striking rod is movably connected inside the hook frame. The top end of the T-shaped striking rod extends into the interior of the support tube and is fixedly connected to a push plate. A push spring is fixedly connected between the bottom of the push plate and the inner wall of the mounting cylinder.

[0009] Furthermore, the intermittent pushing assembly includes a gear rotatably connected inside the support tube, with a pushing tooth plate meshing on one side of the gear and the pushing tooth plate fixedly mounted on the top of the pushing disk, and an intermittent tooth plate meshing on the other side of the gear.

[0010] Furthermore, the pulling assembly includes a pulling rod, which is movably connected to the support tube. A pulling disc is fixedly connected to the bottom end of the pulling rod. The intermittent toothed plate is fixedly installed at the bottom of the pulling disc. A connecting spring is fixedly connected between the top of the pulling disc and the top of the inner wall of the support tube.

[0011] Furthermore, an I-shaped handle is fixedly connected to the top of the pull rod, and an anti-slip groove is formed on the outer surface of the I-shaped handle.

[0012] Furthermore, the guide limiting assembly includes a guide cylinder, which is fixedly connected to the top end of the support tube. The pull rod is movably connected to the guide cylinder. A storage cylinder is fixedly connected to the outside of the guide cylinder. A guide block is provided inside the storage cylinder. A guide groove is opened on the outer surface of the pull rod corresponding to the guide block.

[0013] Furthermore, a connecting plate is movably connected inside the storage tube, the guide block is fixedly connected to one side of the connecting plate, a T-shaped rod is fixedly connected to the other side of the connecting plate, one end of the T-shaped rod extends to the outside of the storage tube, a limit spring is fixedly connected between the other side of the connecting plate and the inner wall of the storage tube, a limit rod is fixedly connected to one side of the guide block, a limit hole is opened in the inner wall of the guide groove, and a ball is rotatably connected to one end of the limit rod.

[0014] This utility model has the following beneficial effects:

[0015] 1. This utility model uses a pulling component to pull an intermittent pushing component. The continuously moving intermittent pushing component can intermittently push the striking end of the elastic hook component downwards. At the same time, the striking end is continuously reset under the pull of the elastic end and strikes the manhole cover, causing the manhole cover to vibrate. The above configuration allows the rust layer between the manhole cover and the manhole opening to be shaken off, making it easier for the subsequent pulling component to hook the manhole cover through the support pipe and the elastic hook component. In addition, since the entire process only requires pulling the pulling component, it is more convenient to hook the manhole cover out of the manhole opening.

[0016] 2. When the pull rod is pulled to the predetermined position using the I-shaped handle, the limiting spring can directly push the limiting rod into the limiting hole through the connecting plate and guide block. At this time, the limiting rod limits the pull rod through the limiting hole, so that the pull rod is directly connected to the support pipe. If the pull rod is pulled further, it will pull the manhole cover through the support pipe and the hook frame, thus moving the manhole cover out of the manhole. The above-mentioned design ensures that the pull rod will not slide freely inside the support pipe when the manhole cover is pulled out of the manhole, which significantly improves the stability and ease of operation of the manhole cover hooking process.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the external outline structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the support tube of this utility model;

[0021] Figure 3 This is a schematic diagram of the intermittent driving component structure of this utility model;

[0022] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0023] Figure 5 This is a schematic diagram of the elastic hook assembly structure of this utility model;

[0024] Figure 6 This is a schematic diagram of the pull rod structure of this utility model;

[0025] Figure 7 This is a schematic diagram of the guide and limiting component structure of this utility model.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Support tube; 2. Elastic hook assembly; 201. Mounting cylinder; 202. Hook frame; 203. T-shaped striking rod; 204. Push plate; 205. Push spring; 3. Intermittent push assembly; 301. Gear; 302. Push toothed plate; 303. Intermittent toothed plate; 4. Pull assembly; 401. Pull rod; 402. Pull plate; 403. Connecting spring; 404. I-shaped handle; 405. Anti-slip groove; 5. Guide and limit assembly; 501. Guide cylinder; 502. Storage cylinder; 503. Guide block; 504. Guide groove; 505. Connecting plate; 506. T-shaped rod; 507. Limit spring; 508. Limit rod; 509. Limit hole; 510. Ball bearing. Detailed Implementation

[0028] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0029] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0030] Please see Figures 1-7 As shown, this utility model is a portable manhole cover hook rod assembly, including a support tube 1, an elastic hooking component 2 at the bottom end of the support tube 1, an intermittent pushing component 3 inside the support tube 1, a pulling component 4 at the top end of the support tube 1, the pulling component 4 being connected to the intermittent pushing component 3, and a guide limiting component 5 corresponding to the pulling component 4 on the outside of the support tube 1.

[0031] The pulling component 4 pulls the intermittent pushing component 3, so that the intermittent pushing component 3 intermittently pushes the elastic hook component 2, while the elastic hook component 2 continuously strikes and vibrates the manhole cover under the elastic force of the elastic end.

[0032] When hooking the manhole cover, the elastic hooking component 2 is moved by the support pipe 1, and moves to the bottom of the manhole cover through the groove opened on the manhole cover. Then, the pulling component 4 pulls the intermittent pushing component 3 upward, and the intermittent pushing component 3 can intermittently push the striking end of the elastic hooking component 2 downward. At the same time, the striking end continuously strikes the manhole cover under the pull of the spring end. When the pulling component 4 moves to the predetermined position, the pulling component 4 can pull the manhole cover upward through the support pipe 1 and the elastic hooking component 2, so that the manhole cover is detached from the manhole opening.

[0033] By pulling the pull assembly 4 to pull the intermittent push assembly 3, the continuously moving intermittent push assembly 3 can intermittently push the striking end of the elastic hook assembly 2 downwards. At the same time, the striking end is continuously reset under the pull of the elastic end and strikes the manhole cover, causing the manhole cover to vibrate. The above configuration allows the rust layer between the manhole cover and the manhole opening to be shaken off, making it easier for the pull assembly 4 to hook the manhole cover through the support pipe 1 and the elastic hook assembly 2. In addition, since the whole process only requires pulling the pull assembly 4, it is more convenient to hook the manhole cover out of the manhole opening.

[0034] In one embodiment, the elastic hook assembly 2 includes a mounting cylinder 201, which is fixedly mounted on the bottom end of the support tube 1. A hook frame 202 is fixedly connected to the bottom end of the mounting cylinder 201. A T-shaped striking rod 203 is movably connected inside the hook frame 202. The top end of the T-shaped striking rod 203 extends into the interior of the support tube 1 and is fixedly connected to a push plate 204. A push spring 205 is fixedly connected between the bottom of the push plate 204 and the inner wall of the mounting cylinder 201.

[0035] The hook frame 202 is moved to the bottom of the manhole cover through the slot opened on the manhole cover. Then, the hook frame 202 is rotated through the support pipe 1 so that the hook frame 202 can contact the bottom of the manhole cover. When the manhole cover is hooked, the T-shaped striking rod 203 moves downward under the action of external force. When the external force disappears, the push spring 205 can push the T-shaped striking rod 203 through the push plate 204, so that the T-shaped striking rod 203 can quickly return to its original position. The T-shaped striking rod 203, after returning to its original position, can strike the manhole cover, so that the manhole cover can vibrate.

[0036] In one embodiment, the intermittent pushing component 3 includes a gear 301, which is rotatably connected inside the support tube 1. One side of the gear 301 is engaged with a pushing tooth plate 302, which is fixedly installed on the top of the pushing disk 204. The other side of the gear 301 is engaged with an intermittent tooth plate 303.

[0037] By pulling the intermittent toothed plate 303 upwards, the moving intermittent toothed plate 303 engages with the gear 301, causing the gear 301 to rotate. The rotating gear 301 then drives the push toothed plate 302 downwards. At this time, the push toothed plate 302 can press the push spring 205 downwards through the push disk 204, while the push disk 204 pushes the T-shaped striking rod 203 downwards. When the intermittent toothed plate 303 is not engaged with the gear 301, the push spring 205 can push the push toothed plate 302 upwards through the push disk 204, while the push disk 204 drives the T-shaped striking rod 203 to reset. The above process can be repeated continuously by simply pulling the intermittent toothed plate 303 upwards.

[0038] In one embodiment, the pulling assembly 4 includes a pulling rod 401, which is movably connected to the support tube 1. A pulling disc 402 is fixedly connected to the bottom end of the pulling rod 401. An intermittent toothed plate 303 is fixedly installed at the bottom of the pulling disc 402. A connecting spring 403 is fixedly connected between the top of the pulling disc 402 and the top of the inner wall of the support tube 1.

[0039] By pulling the lever 401 upwards, the continuously moving lever 401 can continuously pull the intermittent toothed plate 303 upwards via the pull plate 402. When the lever 401 moves upwards, the pull plate 402 can squeeze the connecting spring 403 upwards. At the same time, the hook frame 202 set at the bottom of the support pipe 1 can always be in contact with the bottom of the manhole cover under the push of the connecting spring 403. This setting allows the hook frame 202 to normally hook the manhole cover upwards after the lever 401 moves to the predetermined position.

[0040] In one embodiment, for the aforementioned pull rod 401, an I-shaped handle 404 is fixedly connected to the top end of the pull rod 401, and an anti-slip groove 405 is provided on the outer surface of the I-shaped handle 404.

[0041] The I-shaped handle 404 allows for easy upward pulling of the lever 401, while the anti-slip groove 405 prevents the lever 401 from slipping when pulled using the I-shaped handle 404.

[0042] In one embodiment, the guide limiting component 5 includes a guide cylinder 501, which is fixedly connected to the top end of the support tube 1. The pull rod 401 is movably connected to the guide cylinder 501. A storage cylinder 502 is fixedly connected to the outside of the guide cylinder 501. A guide block 503 is provided inside the storage cylinder 502. A guide groove 504 is provided on the outer surface of the pull rod 401 corresponding to the guide block 503.

[0043] When the pull rod 401 moves upward, the guide block 503 can slide inside the guide groove 504. At this time, the guide block 503 can guide the movement direction of the pull rod 401 through the guide groove 504, so that the pull rod 401 will not rotate when it moves, and at the same time, the intermittent tooth plate 303 can always be on the other side of the gear 301.

[0044] In one embodiment, for the aforementioned storage cylinder 502, a connecting plate 505 is movably connected inside the storage cylinder 502, a guide block 503 is fixedly connected to one side of the connecting plate 505, a T-shaped rod 506 is fixedly connected to the other side of the connecting plate 505, one end of the T-shaped rod 506 extends to the outside of the storage cylinder 502, a limit spring 507 is fixedly connected between the other side of the connecting plate 505 and the inner wall of the storage cylinder 502, a limit rod 508 is fixedly connected to one side of the guide block 503, a limit hole 509 is opened in the inner wall of the guide groove 504, and a ball bearing 510 is rotatably connected to one end of the limit rod 508.

[0045] As the pulling rod 401 moves upward, when the limiting hole 509 aligns with the limiting rod 508, the limiting spring 507 can directly push the limiting rod 508 into the limiting hole 509 through the connecting plate 505 and the guide block 503. At this time, the limiting rod 508 limits the pulling rod 401 through the limiting hole 509, so that the pulling rod 401 is directly connected to the support pipe 1. If the pulling rod 401 is pulled further, it will pull the manhole cover through the support pipe 1 and the hook frame 202, thus moving the manhole cover out of the manhole. In the above configuration, when the pulling rod 401 moves, the ball bearing 510 on the limiting rod 508 can roll on the inner wall of the guide groove 504, so that the friction between the limiting rod 508 and the guide groove 504 is small, and the wear of the limiting rod 508 due to friction is also avoided.

[0046] Through the above technical solution, 1. By pulling the intermittent pushing component 3 through the pulling component 4, the continuously moving intermittent pushing component 3 can intermittently push the striking end of the elastic hook component 2 downwards. At the same time, the striking end is continuously reset under the pull of the elastic end and strikes the manhole cover, causing the manhole cover to vibrate. The above setting allows the rust layer between the manhole cover and the manhole opening to be vibrated off, making it easier for the pulling component 4 to hook the manhole cover through the support pipe 1 and the elastic hook component 2. At the same time, since the whole process only requires pulling the pulling component 4, it is more convenient to hook the manhole cover out of the manhole opening; 2. The pulling rod 401 is pulled by the I-shaped handle 404. When the manhole cover is moved to the predetermined position, the limiting spring 507 can directly push the limiting rod 508 into the limiting hole 509 through the connecting plate 505 and the guide block 503. At this time, the limiting rod 508 limits the pulling rod 401 through the limiting hole 509, so that the pulling rod 401 is directly connected to the support pipe 1. Then, the pulling rod 401 is pulled, so that the pulling rod 401 pulls the manhole cover through the support pipe 1 and the hook frame 202, so that the manhole cover moves out of the manhole. The above settings ensure that the pulling rod 401 will not slide freely inside the support pipe 1 when the manhole cover is pulled out of the manhole, which significantly improves the stability and ease of operation of the manhole cover hooking process.

[0047] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A portable manhole cover hook assembly, comprising a support tube (1), characterized in that, The bottom end of the support tube (1) is provided with an elastic hook assembly (2), the inside of the support tube (1) is provided with an intermittent pushing assembly (3), the top end of the support tube (1) is provided with a pulling assembly (4), the pulling assembly (4) is connected to the intermittent pushing assembly (3), and the outside of the support tube (1) is provided with a guide limiting assembly (5) corresponding to the pulling assembly (4). The intermittent pushing component (3) is pulled by the pulling component (4) so ​​that the intermittent pushing component (3) intermittently pushes the elastic hook component (2), while the elastic hook component (2) continuously hits and vibrates the manhole cover under the elastic force of the elastic end.

2. The portable manhole cover hook assembly according to claim 1, characterized in that, The elastic hook assembly (2) includes a mounting cylinder (201), which is fixedly mounted on the bottom end of the support tube (1). A hook frame (202) is fixedly connected to the bottom end of the mounting cylinder (201). A T-shaped striking rod (203) is movably connected inside the hook frame (202). The top end of the T-shaped striking rod (203) extends into the interior of the support tube (1) and is fixedly connected to a push plate (204). A push spring (205) is fixedly connected between the bottom of the push plate (204) and the inner wall of the mounting cylinder (201).

3. The portable manhole cover hook assembly according to claim 2, characterized in that, The intermittent push assembly (3) includes a gear (301) which is rotatably connected inside the support tube (1). One side of the gear (301) is engaged with a push tooth plate (302), which is fixedly installed on the top of the push disk (204). The other side of the gear (301) is engaged with an intermittent tooth plate (303).

4. The portable manhole cover hook assembly according to claim 3, characterized in that, The pulling assembly (4) includes a pulling rod (401), which is movably connected to the support tube (1). A pulling disc (402) is fixedly connected to the bottom end of the pulling rod (401). An intermittent toothed plate (303) is fixedly installed at the bottom of the pulling disc (402). A connecting spring (403) is fixedly connected between the top of the pulling disc (402) and the top of the inner wall of the support tube (1).

5. A portable manhole cover hook assembly according to claim 4, characterized in that, The top end of the pull rod (401) is fixedly connected to an I-shaped handle (404), and the outer surface of the I-shaped handle (404) is provided with an anti-slip groove (405).

6. A portable manhole cover hook assembly according to claim 4, characterized in that, The guide limiting component (5) includes a guide cylinder (501), which is fixedly connected to the top end of the support tube (1). The pull rod (401) is movably connected to the guide cylinder (501). A storage cylinder (502) is fixedly connected to the outside of the guide cylinder (501). A guide block (503) is provided inside the storage cylinder (502). A guide groove (504) is opened on the outer surface of the pull rod (401) corresponding to the guide block (503).

7. A portable manhole cover hook assembly according to claim 6, characterized in that, The storage tube (502) is movably connected to a connecting plate (505). The guide block (503) is fixedly connected to one side of the connecting plate (505). A T-shaped rod (506) is fixedly connected to the other side of the connecting plate (505). One end of the T-shaped rod (506) extends to the outside of the storage tube (502). A limit spring (507) is fixedly connected between the other side of the connecting plate (505) and the inner wall of the storage tube (502). A limit rod (508) is fixedly connected to one side of the guide block (503). A limit hole (509) is opened in the inner wall of the guide groove (504). A ball bearing (510) is rotatably connected to one end of the limit rod (508).

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