Well lid convenient to open

Abstract

The utility model discloses a well lid convenient to open, which comprises a square well lid seat protruding out of the ground, a through groove corresponding to a well hole is formed in the middle of the well lid seat, and a square well lid body covers the well lid seat; the well lid body at least extends out of a well lid base in the front-back direction. The moving mechanism comprises a guide supporting rail extending in the left-right direction and a roller, the roller is connected to the guide supporting rail in a rolling mode, and the well lid body moves in the left-right direction along the guide supporting rail through the roller. The locking limiting mechanism controls the well lid body to move. The rolling wheels installed on the well lid are connected with the guide supporting rails fixedly connected to the well lid base in a rolling mode, the well lid can be opened and closed by moving the rolling wheels in the left-right direction along the guide supporting rails by pulling or pushing the well lid, the well lid does not need to be lifted up to be integrally moved away, a crowbar is not needed, and the well lid is convenient to use. The operation is more convenient; the locking limiting mechanism can limit movement of the well lid, rotation of the first control head is controlled through cooperation of a control hole of the second control head and a control block on the first control head, and then a limiting screw rod is controlled to be screwed in or screwed out of a limiting screw hole, so that the situation that the well lid is movably opened by non-related personnel can be avoided; and a certain anti-theft effect can also be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of manhole covers, in particular to a manhole cover which is easy to open. Background Art

[0002] A sewage inspection well is a manhole set up in a drainage pipe system for inspecting and cleaning pipes. A manhole cover is installed on the mouth of the sewage inspection well to block and prevent people or objects from falling. In some places (such as roadsides or rural areas where there are not many pedestrians), the sewage inspection wells are protruding, which include a square manhole cover seat protruding from the ground, and a manhole cover body covering the manhole cover seat. However, some manhole covers are currently made of ductile iron or high-strength fiber cement concrete manhole covers, so the manhole covers are very heavy, which makes it difficult to lift and move the whole manhole cover to open it, which is very inconvenient, and some even require a crowbar, etc., which makes it even more difficult to open the manhole cover. Therefore, it is necessary to make improvements and provide a manhole cover for a protruding sewage inspection well that can be easily opened. The applicant searched for technical solutions related to protruding sewage inspection wells, but did not find any relevant improvement solutions. Utility Model Content

[0003] Therefore, based on the above background, the utility model provides a manhole cover that is easy to open, which is rollingly connected to a guide support rail through rollers. The manhole cover can be easily opened and closed by moving the rollers in the left and right directions of the guide support rails, and the locking and limiting mechanism can not only restrict the movement of the manhole cover, but also has a certain anti-theft effect.

[0004] The technical solution provided by the utility model is:

[0005] A manhole cover that is easy to open, comprising a square manhole cover seat protruding from the ground, a through slot corresponding to the well hole being opened in the middle of the manhole cover seat, and a square manhole cover body covering the manhole cover seat; the manhole cover body at least extends outward from the manhole cover seat in the front and rear directions;

[0006] A moving mechanism, the moving mechanism comprising a guide support rail extending in the left-right direction and a roller, the roller being rollingly connected to the guide support rail, and the manhole cover body being moved in the left-right direction along the guide support rail by the roller;

[0007] A locking and limiting mechanism controls the movement of the manhole cover body.

[0008] One implementation method is that the roller is movably installed below the manhole cover body, the guide support rail is fixedly connected to the front and rear sides of the manhole cover seat, and at least one end of the guide support rail extends out of the manhole cover seat.

[0009] One implementation method is that a guide convex rail is provided on the upper part of the guide support rail, an annular groove is provided in the middle of the roller, and the roller is mounted on the guide convex rail through the annular groove.

[0010] One implementation method is that the locking limit mechanism includes a limit assembly and a limit fixing block: the limit assembly includes a limit screw, the limit fixing block is fixed to the inner wall of the manhole cover seat, and the limit fixing block is provided with a limit screw hole that cooperates with the limit screw; the limit screw portion is located in the limit screw hole to limit the movement of the manhole cover body.

[0011] One implementation method is that the limit screw is provided with a first control head, and the limit screw is controlled by the first control head to rotate in or out of the limit screw.

[0012] Position screw holes.

[0013] In one implementation manner, the first control head comprises a limiting cylinder, and a control block is arranged in a cylinder cavity of the limiting cylinder.

[0014] One implementation method is that a control assembly is detachably inserted into the barrel cavity, and the control assembly includes a second control head adapted to the barrel cavity, and the second control head is provided with a control hole adapted to the control block.

[0015] One implementation method is that the guide support rail extends to the right out of the manhole cover seat, and the guide support rail is foldable.

[0016] One implementation manner is that the guide support rail includes a fixed section and a movable section, and the movable section is rotatably connected to the fixed section.

[0017] The above technical solution has the following beneficial effects:

[0018] The utility model is connected in a rolling manner by a roller installed on the manhole cover and a guide support rail fixed to the manhole cover seat. By pulling or pushing the manhole cover, the manhole cover can be opened and closed by moving the roller in the left and right directions along the guide support rail. There is no need to lift the manhole cover as a whole and no need for a crowbar, so the operation is more convenient.

[0019] Its locking and limiting mechanism can not only limit the movement of the manhole cover, but also control the rotation of the first control head through the cooperation between the control hole of the second control head and the control block on the first control head, thereby controlling the screwing in or out of the limiting screw hole. This can not only prevent unrelated personnel from moving and opening the manhole cover, but also play a certain anti-theft role.

[0020] The foldable guide support rail can be used to fold the manhole cover without opening it, shortening its length extending from the manhole cover seat, thereby reducing its impact on pedestrians and increasing its flexibility of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 The structure of the embodiment 1 of the present utility model is shown in FIG. Figure 1 ;

[0023] Figure 2 The structure of the embodiment 1 of the present utility model is shown in FIG. Figure 2 ;

[0024] Figure 3 The structure of the embodiment 1 of the present utility model is shown in FIG. Figure 3 ;

[0025] Figure 4 The structure of the embodiment 1 of the present utility model is shown in FIG. Figure 4 ;

[0026] Figure 5 It is a schematic diagram of the cross-sectional structure of the locking and limiting mechanism of the utility model, the manhole cover seat and the manhole cover;

[0027] Figure 6 The structure diagram of the locking and limiting mechanism of the utility model is shown in FIG. Figure 1 ;

[0028] Figure 7 The structure diagram of the locking and limiting mechanism of the utility model is shown in FIG. Figure 2 ;

[0029] Figure 8 The structure diagram of the locking and limiting mechanism of the utility model is shown in FIG. Figure 3 ;

[0030] Fig. 9 This is a reference schematic diagram of the use state of Example 1 of the utility model;

[0031] Fig.10 This is a schematic diagram of the structure of Example 2 of the utility model Figure 1 ;

[0032] Fig.11 The structure of the embodiment 3 of the present utility model is shown in FIG. Figure 2 ;

[0033] Fig.12 The structure of the embodiment 3 of the present utility model is shown in FIG. Figure 3 . DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In the description of the present utility model, "first feature" and "second feature" may include one or more of the features. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0037] The utility model is further described below in conjunction with the accompanying drawings.

[0038] Example 1: Reference Figures 1 to 9 The manhole cover shown in the figure is easy to open, and comprises a square manhole cover seat 2 protruding from the ground, a through slot 21 corresponding to the well hole is opened in the middle of the manhole cover seat 2, and a square manhole cover body 1 is covered on the manhole cover seat 2; the manhole cover body 1 extends outward from the manhole cover seat 2 in at least the front and rear directions; the manhole cover body can extend outward from the manhole cover seat in the front and rear directions, or extend outward from the manhole cover seat in four directions, preferably, as shown in FIG. Figure 1 As shown, the manhole cover seat extends outward in four directions, front, back, left, and right, to ensure that the manhole can be covered.

[0039] It should be noted that the front, back, left, and right directions mentioned in this embodiment and the following are for reference only. Figure 1 The directions shown, for example Figure 1 The direction pointed by the arrow is left or right.

[0040] The moving mechanism 3 includes a guide support rail 31 extending in the left and right directions and a roller 34, the roller 34 is rollingly connected to the guide support rail 31, and the manhole cover body 1 moves in the left and right directions along the guide support rail 31 through the roller 34; the roller 34 is movably installed under the manhole cover body 1, the guide support rail 31 is fixedly connected to the front and rear sides of the manhole cover seat 2, and at least one end of the guide support rail 31 extends out of the manhole cover seat 2. In this embodiment, as shown in the figure, the right end of the guide support rail extends out of the manhole cover seat, and the extended length is adapted to the left and right length of the manhole cover, that is, it is necessary to ensure that after the manhole cover seat moves to the right along the guide support rail, the wellhead is at least 2 / 3 or completely exposed. A guide convex rail 311 is provided on the upper portion of the guide support rail 31, and an annular groove 341 is provided in the middle of the roller 34. The roller 34 is mounted on the guide convex rail 311 through the annular groove 341, thereby avoiding possible displacement and derailment when the roller rolls along the guide convex rail 311, and improving the stability of the manhole cover when it moves along the guide convex rail through the roller.

[0041] like Figure 1 As shown, the roller 34 is installed on the manhole cover through the roller frame 33, and the roller frame 33 is fixedly installed on the manhole cover. For example, the roller frame is made of steel, which can be connected by anchoring or welding or expansion screws, and the roller is rotatably installed on the roller frame 33 through the installation shaft; the guide support rail 31 is fixedly installed on the manhole cover seat through the support mounting frame 32, and the manhole cover seat is usually cast by concrete. The support mounting frame 32 can be made of channel steel, and the channel steel can be installed on the manhole cover seat by anchoring or welding or expansion screws, and the guide support rail is installed on the support mounting frame 32 by welding. More specifically, vertical guide plates 312 are provided at both ends of the guide support rail 31, and the upward height of the guide plate 312 exceeds the guide convex rail 311, so as to limit the rolling of the roller along the guide support rail 31, and avoid improper control and the roller from detaching from the guide support rail.

[0042] There are embodiments in which the manhole cover does not touch the top surface of the manhole cover seat, and supports the manhole cover through rollers and guide support rails. For example, the gap between the bottom surface of the manhole cover and the top surface of the manhole cover seat can be 0.5-5mm to avoid the influence of friction between the opposing surfaces of the manhole cover and the manhole cover seat when the manhole cover is pushed or pulled; or although the bottom surface of the manhole cover touches the opposing surface of the manhole cover seat, the top surface of the manhole cover and the top surface of the manhole cover seat are polished smooth or painted after polishing, such as self-leveling floor paint, so that the opposing surfaces of the manhole cover and the manhole cover seat are in smooth contact, reducing friction, so that it can be pushed or pulled more effortlessly and moved along the guide support rail through rollers.

[0043] See Figures 5 to 8As shown, the locking and limiting mechanism 4 controls the movement of the manhole cover body 1. The locking and limiting mechanism includes a limiting assembly 42 and a limiting fixed block 43: the limiting assembly 42 includes a limiting screw 422, the limiting fixed block 43 is fixedly connected to the inner wall of the manhole cover seat 2, and the limiting fixed block 43 is provided with a limiting screw hole 431 that cooperates with the limiting screw 422; the limiting screw 422 is partially located in the limiting screw hole 431 to limit the movement of the manhole cover body 1. The limiting screw 422 is provided with a first control head, and the limiting screw 422 is controlled by the first control head to rotate in or out of the limiting screw hole 431. The first control head includes a limiting cylinder 421, and a control block 424 is provided in the cylinder cavity 423 of the limiting cylinder 421. The limiting assembly may be an integrated structure. More specifically, the manhole cover is provided with a first limiting groove 11 adapted to the limiting cylinder 421. A through hole 111 cooperating with the limiting screw 422 is provided at the bottom of the first limiting groove 11. The diameter of the through hole is smaller than the outer diameter of the limiting cylinder 421. The inner wall of the through hole 111 may be a smooth wall or have threads. For example, the inner wall of the through hole 111 has threads, and the threads are adapted to the threaded engagement of the limiting screw. The groove depth of the first limiting groove 11 is greater than or equal to the height of the limiting cylinder. When the bottom surface of the limiting cylinder contacts the groove bottom of the first limiting groove 11, part of the limiting screw is located in the limiting screw hole. When the limiting cylinder is located outside the first limiting groove, the limiting screw is completely disengaged from the limiting groove. This can be achieved by the limiting cylinder, the length of the limiting screw and the installation position of its limiting fixing block. And in the specific implementation, when the roller moves to the left to the bottom along the guide support rail 31, the through hole corresponds to the limiting screw hole, or a limiting plate is provided at the lower part of the manhole cover near the left part, and the limiting plate is located on the front side or right side of the limiting fixing block. When the limiting plate is in contact with the inner wall of the manhole cover seat, the through hole corresponds to the limiting screw hole to play a certain positioning role.

[0044] The limiting fixing block can be integrated with the manhole cover seat, poured with concrete and then punched; or it can be made of steel and installed near the upper part of the manhole cover seat through anchoring or welding or expansion screws.

[0045] Specifically, the shape of the control block 424 can be a triangle (as shown in the figure), or a square, or other irregular shapes, such as a star shape.

[0046] The control assembly 41 is detachably inserted into the barrel cavity 423, and the control assembly includes a second control head 412 adapted to the barrel cavity 423, and the second control head 412 is provided with a control hole 413 adapted to the control block 424. The shape of the control hole 413 is adapted to the shape of the control block 424, and the control block 424 can be placed in the control hole in a matching manner. A control handle 411 is provided above the second control head. In a more specific implementation, the control block is placed in the control hole, and the rotation of the second control head is controlled by the control handle. The second control head drives the first control head and its limit screw to rotate through the control block, thereby controlling the limit screw to be screwed in and out of the limit screw hole to control the movement of the manhole cover.

[0047] And the first control head, especially the control block of special shape, needs matching control components to control the first control head and the limit screw, which can not only prevent unrelated personnel from moving and opening the manhole cover, but also play a certain anti-theft role.

[0048] Furthermore, the manhole cover 1 is provided with a push-pull rod 51, the lower end of which can be fixed to the manhole cover, or the push-pull rod can be installed on the manhole cover 180 degrees. Specifically, the manhole cover is provided with a second limiting groove 12, and the lower end of the push-pull rod 51 (such as Fig. 9 As shown in the figure, the push-pull rod 51 is rotatably installed in the second limiting groove 12 through a rotating shaft. For example, both ends of the rotating shaft are fixedly connected to the front and rear side walls of the second limiting groove 12, and the rod body at the lower end of the push-pull rod 51 is sleeved on the rotating shaft.

[0049] Among them, there may be another embodiment, in which an anti-theft iron chain (not shown) is provided between the manhole cover and the support mounting frame, one end of the anti-theft iron chain is connected to the manhole cover, and the other end is connected to the support mounting frame. More specifically, for example, the two ends of the anti-theft iron chain can be installed on the manhole cover or the support mounting frame by welding, or can be connected by passing through iron rings welded to the manhole cover or the support mounting frame, and the method is not limited to the above.

[0050] Embodiment 2: Based on Embodiment 1, the manhole cover of this embodiment may be provided with a plurality of locking and limiting mechanisms 4 (not shown), for example, 3, and the control blocks may be selected in different shapes, for example, one is square, one is triangle, and one is pentagonal, and they may be respectively close to the three sides of the manhole cover, and each control block corresponds to a control component with a corresponding control hole, and the manhole cover is provided with a first limiting groove corresponding to the locking and limiting mechanism 4, and the manhole cover seat is provided with a limiting fixing block corresponding to the locking and limiting mechanism 4, so that the difficulty of unrelated personnel to move the manhole cover can be further increased, and a better anti-theft effect can be achieved. In specific applications, the limiting screw only needs to be partially located in the limiting screw hole, and the limiting fixing block can be installed close to the manhole cover, so that when the matching control component is used, when the limiting screw is screwed in or out, it does not need to consume a lot of time and energy, and compared with the loss caused by the manhole cover being moved by unrelated personnel or stolen, it can be ignored.

[0051] Example 3: Reference Figures 1 to 12 A manhole cover that is easy to open is shown. Compared with Example 1, the guide support rail 31 of this embodiment extends to the right out of the manhole cover seat 2, and the guide support rail 31 is foldable. The guide support rail 31 includes a fixed section 313 and a movable section 314, and the movable section 314 is rotatably connected to the fixed section 313. The fixed section 313 is close to the manhole cover seat, and the movable section and the fixed section are rotatably connected by a hinge, such as a hinge. The hinge is located on the side of the guide support rail facing away from the manhole cover seat. A lock 316 is provided on the side of the guide support rail facing away from the hinge. The lock includes a fixed part and a movable part. This is common knowledge and will not be described in detail. The fixed part is located on the fixed section 313, and the movable part is located on the movable section 314;

[0052] After the lock is opened, the movable sections of the guide support rails located in front and behind the manhole cover seat rotate backwards until they rotate onto the support mounting frame 32 and are supported by the support mounting frame 32. The guide support rails can reduce the impact on pedestrians and increase the flexibility of use by folding the movable sections and shortening the length of the guide support rails extending out of the manhole cover seat when the manhole cover does not need to be opened.

[0053] More specifically, the lower part of the movable section is fixedly connected, for example, welded or integrated, with support legs 315 to increase the support of the movable section to the manhole cover moved thereon.

[0054] There may be another embodiment, in which at least one of the support mounting frames 32 located on the front and rear sides of the manhole cover seat has an L-shaped limit block 321 rotatably installed on its side wall. The L-shaped limit block can be installed on the support mounting frame by a hinge, such as a hinge, and when it is rotated and located on the top surface of the support mounting frame, it can play a certain limiting role on the movable section folded thereon.

[0055] When the utility model is used in a specific application, when the manhole cover needs to be opened, the control component matched with the limit block of the first control head is inserted into the limit hole and the limit block accordingly, and then the handle is turned with force to apply force to the control block through the control hole, thereby driving the limit screw to rotate, so that the limit screw is screwed out of the limit screw hole. After it is completely screwed out of the limit screw hole, the push-pull rod can be used to apply force to the right to push the manhole cover to move to the right along the guide support rail through the roller until the wellhead is exposed to the extent that it can be repaired, and the manhole cover is easy to open; when the manhole cover needs to be closed, the push-pull rod is used to apply force to the left to push the manhole cover to move to the left along the guide support rail through the roller until the manhole cover moves to the leftmost, and the control component matched with the limit block of the first control head is inserted into the limit hole and the limit block accordingly, and then the handle is turned with force to apply force to the control block through the control hole, thereby driving the limit screw to rotate, so that the limit screw is screwed into the limit screw hole until the bottom surface of the limit cylinder contacts the bottom of the groove of the first limit groove.

[0056] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A manhole cover that is easy to open, comprising a square manhole cover seat protruding from the ground, a through slot corresponding to the well hole is opened in the middle of the manhole cover seat, and a square manhole cover body is covered on the manhole cover seat; It is characterized in that The manhole cover body at least extends outwardly from the manhole cover seat in the front-rear direction; A moving mechanism, the moving mechanism comprises a guide support rail extending in the left and right directions and a roller, the roller is installed below the manhole cover body, the guide support rail is fixedly connected to the front and rear sides of the manhole cover seat, at least one end of the guide support rail extends outward from the manhole cover seat, and the roller is rollingly connected to the guide support rail; the manhole cover body moves in the left and right directions along the guide support rail through the roller; A locking and limiting mechanism controls the movement of the manhole cover body.

2. The easy-to-open manhole cover according to claim 1, characterized in that: A guide convex rail is arranged on the upper part of the guide support rail, an annular groove is arranged in the middle of the roller, and the roller is mounted on the guide convex rail through the annular groove.

3. The easy-to-open manhole cover according to claim 1, characterized in that: The locking limit mechanism includes a limit assembly and a limit fixing block: the limit assembly includes a limit screw, the limit fixing block is fixedly connected to the inner wall of the manhole cover seat, and the limit fixing block is provided with a limit screw hole that cooperates with the limit screw; when the limit screw is partially located in the limit screw hole, the movement of the manhole cover body is restricted.

4. The easy-to-open manhole cover according to claim 3, characterized in that: The limiting screw is provided with a first control head, and the limiting screw is controlled by the first control head to be screwed into or out of the limiting screw hole.

5. The easy-to-open manhole cover according to claim 4, characterized in that: The first control head comprises a limiting cylinder, and a control block is arranged in the cylinder cavity of the limiting cylinder.

6. The easy-to-open manhole cover according to claim 5, characterized in that: A control assembly is detachably inserted into the barrel cavity. The control assembly includes a second control head adapted to the barrel cavity. The second control head is provided with a control hole adapted to the control block.

7. The easy-to-open manhole cover according to claim 1, characterized in that: The guide support rail extends to the right out of the manhole cover seat, and the guide support rail is foldable.

8. The easy-to-open manhole cover according to claim 7, characterized in that: The guide support rail comprises a fixed section and a movable section, and the movable section is rotatably connected to the fixed section.

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