Lock and well lid

Abstract

The utility model discloses a lockset which comprises a rotating block, and a force application part extending upwards is arranged in the center of the rotating block. The at least two groups of locking units are distributed along the circumferential direction of the rotating block; the locking unit comprises a first connecting piece and a second connecting piece which are hinged to each other, the other end of the first connecting piece is hinged to the rotating block, an elastic piece is connected to the second connecting piece in a sleeved mode, and a plug is arranged on the head portion of the second connecting piece. The multiple second connecting pieces surrounding the periphery of the rotating block move inwards or outwards in the radial direction of the well lid body, so that the plugs are separated from or stretch into the locking holes correspondingly formed in the inner wall of the well base, the well lid body can be locked at the well mouth through the function of the lock, the anti-theft function of the well lid is added, and the well lid is convenient to use. And the situation that the well lid is stolen and illegally opened is effectively avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of municipal equipment, and specifically relates to a lock and a manhole cover. Background Art

[0002] A manhole cover is a product used to cover roads or deep wells to prevent people or objects from falling. It is equipped with manhole covers in power grid wells, communication network wells, water supply and drainage network wells, etc. Ordinary manhole covers have a simple structure. They only need to be placed on the shaft to cover the shaft, but they are easy to be flipped over or stolen.

[0003] For example, a Chinese patent with publication number CN201220527125.6 discloses an adjustable anti-sinking manhole cover, including a manhole cover body and a manhole cover frame for supporting the manhole cover body, wherein the manhole cover frame includes a horizontally arranged upper panel and a vertically arranged upright plate, and a support platform for supporting the manhole cover body is provided on the upper side of the upright plate.

[0004] As the applicant conducted further research, it was found that since the manhole cover of this technical solution does not have a lock structure, the manhole cover can be easily opened during use, which can easily cause damage to the facilities in the well. The manhole cover can be stolen by some lawless elements, which will cause safety hazards if not discovered in time. Utility Model Content

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A lock comprising:

[0007] The rotating block has a force-applying portion extending upward at the center thereof;

[0008] At least two groups of locking units are distributed along the circumference of the rotating block;

[0009] The locking unit comprises a first connecting member and a second connecting member which are hinged to each other, the other end of the first connecting member is hinged to the rotating block, an elastic member is sleeved on the second connecting member, and a plug is arranged on the head of the second connecting member.

[0010] Furthermore, a stop side ear is provided on the rotating block. After the rotating block drives the stop side ear to rotate a certain angle, the stop side ear abuts against the first connecting member or / and the second connecting member of one group of the locking units, and the first connecting member and the second connecting member are in a straight line.

[0011] Furthermore, a stopping protrusion is connected to the stopping side ear.

[0012] Furthermore, the locking units are in three groups and are evenly distributed.

[0013] Furthermore, the plug is conical, and the diameter of the tail of the plug is larger than the diameter of the elastic member.

[0014] The utility model also discloses a manhole cover, including a manhole cover body and the above-mentioned lock, wherein the bottom of the manhole cover body is respectively provided with a plurality of groups of first limit seats and second limit seats which surround the center and are equidistant from each other, the second connecting member passes through the first limit seat and the second limit seat correspondingly, and the elastic member is located between the first limit seat and the second limit seat

[0015] Furthermore, a plurality of groups of the first limiting seats are sequentially connected end to end to form a polygonal shape.

[0016] Furthermore, a positioning groove and a positioning protrusion extending radially outward along the manhole cover body are provided on the edge of the manhole cover body.

[0017] Furthermore, the positioning grooves and positioning protrusions are symmetrically distributed.

[0018] Furthermore, a plurality of reinforcing ribs are provided at the bottom of the manhole cover body.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The lock is arranged at the bottom of the manhole cover body, and torque is applied to the force-applying part, so that multiple second connecting parts surrounding the outer circumference of the rotating block are moved radially inward or outward along the manhole cover body, so that the plug is disengaged from or extends into the locking hole correspondingly arranged on the inner wall of the well seat. Through the action of the lock, the manhole cover body can be locked at the wellhead, thereby increasing the anti-theft function of the manhole cover and effectively preventing the manhole cover from being stolen or illegally opened.

[0021] The lock of the utility model is easy to operate, and the plug can be moved by rotating the lock, so that the manhole cover can be installed conveniently and quickly. At the same time, the lock is provided with at least two sets of locking units, so that the manhole cover body is locked more firmly in the manhole seat, and the anti-theft performance is stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model;

[0023] Figure 2 This is a bottom view structural diagram of an embodiment of the utility model;

[0024] Figure 3 It is a schematic diagram of the top view of the structure of an embodiment of the utility model;

[0025] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure of AA;

[0026] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure of the middle BB;

[0027] Figure 6 This is a schematic diagram of the three-dimensional structure of the well seat in the embodiment of the utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the well seat, the well cover and the adjustment ring in the embodiment of the utility model;

[0029] Figure 8 This is a schematic cross-sectional view of the well seat, well cover and adjustment ring in the embodiment of the utility model during assembly and use;

[0030] Fig. 9 for Figure 8 A local enlarged schematic diagram of point A in the middle.

[0031] The reference numerals in the drawings of the specification include:

[0032] Rotating block 1, force applying part 10, first connecting part 11, second connecting part 12, plug 120, elastic part 13, stopping side ear 14, stopping protrusion 140, manhole cover body 2, hook hole 20, first limit seat 21, second limit seat 22, positioning groove 23, positioning protrusion 24, reinforcing rib 25, manhole seat 3, rubber strip 30, locking hole 31, adjusting ring 4. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0034] Among them, the drawings are only used for exemplary explanations, and they only show schematic diagrams rather than actual drawings, and cannot be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the 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 drawings may be omitted, and the same or similar reference numerals in the drawings of the embodiments of the utility model correspond to the same or similar parts; in the description of the utility model, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer" and the like appear, the directions or positional relationships indicated are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, so the terms describing the positional relationship in the drawings are only used for exemplary explanations, and cannot be understood as limitations on this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0035] like Figure 1 - Figure 5 As shown, a lock of the utility model comprises a rotating block 1 and a locking unit;

[0036] Wherein, a force applying portion 10 extending upward is provided at the center of the rotating block 1;

[0037] The locking units are arranged in at least two groups and are distributed along the circumference of the rotating block 1;

[0038] Specifically, the locking unit includes a first connecting member 11 and a second connecting member 12 which are hinged to each other. The other end of the first connecting member 11 is hinged to the rotating block 1. An elastic member 13 is sleeved on the second connecting member 12. A plug 120 is provided at the head of the second connecting member 12.

[0039] The utility model also discloses a manhole cover, the bottom of which is assembled with the above lock, the bottom of the manhole cover body 2 is respectively provided with a plurality of groups of first limit seats 21 and second limit seats 22 which surround the center and are equidistant from each other, the second connecting member 12 passes through the first limit seats 21 and the second limit seats 22 respectively, and the elastic member 13 is located between the first limit seats 21 and the second limit seats 22. The elastic member 13 is a spring.

[0040] By setting the lock at the bottom of the manhole cover body 2, by applying torque to the force-applying part 10, multiple second connecting parts 12 surrounding the outer periphery of the rotating block 1 are moved radially inward or outward along the manhole cover body 2, so that the plug 120 is disengaged from or extends into the locking hole 31 correspondingly set on the inner wall of the well seat 3. Through the action of the lock, the manhole cover body 2 can be locked at the wellhead, thereby increasing the anti-theft function of the manhole cover body 2 and effectively preventing the manhole cover body 2 from being stolen or illegally opened.

[0041] The lock of the utility model is easy to operate, and the plug 120 can be moved by rotating, and the manhole cover is easy and quick to install. At the same time, the lock is provided with at least two sets of locking units, so that the manhole cover body 2 is locked more firmly in the manhole seat 3, and the anti-theft performance is stronger.

[0042] The first limiting seat 21 and the second limiting seat 22 prevent the second connecting member 12 from swinging during the relative movement and keep it aligned with the locking hole 31 of the well seat 3 .

[0043] like Figure 2 As shown, when the rotating block 1 is rotated counterclockwise, the first connecting member 11 and the second connecting member 12 gradually form a certain angle from being in a straight line, the second connecting member 12 is in a retracted state, and its plug 120 is disengaged from the locking hole 31 of the well seat, and the spring is in a compressed state. At this time, the manhole cover body 2 is in an unlocked state. The operator uses an external tool, such as an iron hook, a crowbar, etc., to extend the tool into the hook hole 20 opened on the manhole cover body 2, and applies force upward to separate the manhole cover body 2 from the well seat 3.

[0044] Similarly, when the rotating block 1 is rotated clockwise or under the action of the spring restoring force, the angle between the first connecting member 11 and the second connecting member 12 becomes smaller. During this process, the first connecting member 11 moves radially outward along the manhole cover body 2, and the plug 120 extends into the locking hole 31 of the manhole seat. At this time, the manhole cover body 2 is in a locked state.

[0045] A through hole corresponding to the force-applying part 10 is opened at the center of the manhole cover body 2. In a specific implementation, the force-applying part 10 can be welded to the rotating part using a hexagonal bolt, with the hexagonal bolt facing the ground. The operator uses a corresponding hexagonal tool to reach into the through hole and tighten the bolt to rotate the rotating part.

[0046] Among them, a stop side ear 14 is provided on the rotating block 1. After the rotating block 1 drives the stop side ear 14 to rotate a certain angle, the stop side ear 14 abuts against the first connecting member 11 and / or the second connecting member 12 of one group of locking units, and the first connecting member 11 and the second connecting member 12 are in a straight line.

[0047] The thickness of the stopping side ear 14 can be slightly thicker than the rotating block 1. After the rotating member rotates a certain angle, the manhole cover body 2 is in a locked state, and the stopping side ear 14 is also in contact with the locking unit. Since the second connecting member 12 will not swing and always performs translational motion, the stopping side ear 14 is restricted by the second connecting member 12 at this time to prevent the rotating member from rotating excessively.

[0048] The thickness of the stopping side ear 14 can be the same as that of the rotating part. In order to enable the stopping side ear 14 to contact the second connecting part 12 and / or the first connecting part 11 after rotation and be stopped, a stopping protrusion 140 can be provided on the stopping side ear 14, and the stopping protrusion 140 contacts the locking unit. Specifically, during implementation, the stopping protrusion 140 can be welded on the stopping side ear 14 by bolts.

[0049] Specifically, the connection between the first connecting member 11 and the rotating block 1, and the connection between the first connecting member 11 and the second connecting member 12 can be achieved by opening a through hole at the connection point and connecting the corresponding parts with bolts. Since the column of the bolt is relatively long, the two connected parts can rotate relative to each other.

[0050] Among them, a plurality of groups of first limiting seats 21 are sequentially connected end to end to form a polygonal shape to surround the rotating block 1 .

[0051] In order to make the manhole cover body 2 be locked more firmly, the locking units are arranged in three groups and are evenly distributed, so that the angle between two adjacent groups of locking units is 120 degrees.

[0052] In addition, the plug 120 can be configured to be conical or arrow-shaped, and the diameter of the tail of the plug 120 is greater than the diameter of the elastic member 13 .

[0053] In addition, a positioning groove 23 and a positioning protrusion 24 extending radially outwardly along the manhole cover body 2 are formed on the edge of the manhole cover body 2 .

[0054] like Figure 6 , Figure 7 As shown, a positioning structure corresponding to the positioning groove 23 and the positioning protrusion 24 is also provided on the well seat, so that when the well cover body 2 is placed, the well cover body 2 is prevented from shifting or rotating, so that the plug 120 cannot be aligned with the locking hole 31, and the lock loses its locking function on the well cover body 2.

[0055] Specifically, the positioning grooves 23 and the positioning protrusions 24 are symmetrically distributed.

[0056] In order to strengthen the structural strength of the manhole cover body 2, a plurality of reinforcing ribs 25 can be provided at the bottom of the manhole cover body 2. At the same time, the manhole cover body 2 is made of ductile iron material and process, which is more durable than the gray cast iron manhole cover body 2. Under the same configuration, it can withstand higher weight and impact. At the same time, it has stronger corrosion resistance and can maintain excellent durability and stability even in a relatively harsh use environment.

[0057] like Figure 6 , Figure 7 , Figure 8 , Fig. 9 As shown, the utility model also discloses a matching well seat 3 and an adjusting ring 4 for installing the manhole cover. The adjusting ring 4 plays a role of preventing displacement. A round hole is opened at the upper end, and the adjusting ring 4 is fixed by passing a ground anchor bolt through the round hole;

[0058] In addition, a rubber strip 30 is provided on the inner wall of the well seat 3, which plays a role of sealing and reducing rigid collision after the well cover body 2 is installed in place. Specifically, the rubber strip 30 can be made of a vulcanized chloroprene composite material.

[0059] The above are only embodiments of the utility model. The common sense such as the known specific structures and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field are aware of all the common technical knowledge in the technical field to which the utility model belongs before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement the scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for the ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A lock, characterized in that: include: The rotating block has a force-applying portion extending upward at the center thereof; At least two groups of locking units are distributed along the circumference of the rotating block; The locking unit comprises a first connecting member and a second connecting member which are hinged to each other, the other end of the first connecting member is hinged to the rotating block, an elastic member is sleeved on the second connecting member, and a plug is arranged on the head of the second connecting member; The rotating block is provided with a stop side ear. After the rotating block drives the stop side ear to rotate a certain angle, the stop side ear abuts against the first connecting piece and / or the second connecting piece of one group of the locking units, and the first connecting piece and the second connecting piece are in a straight line.

2. A lock according to claim 1, characterized in that: The stopping side ear is connected with a stopping protrusion.

3. A lock according to claim 1 or 2, characterized in that: The locking units are in three groups and are evenly distributed.

4. A lock according to claim 3, characterized in that: The plug is tapered, and the diameter of the tail of the plug is greater than the diameter of the elastic member.

5. A manhole cover, comprising a manhole cover body and a lock, characterized in that: The lock is the lock described in any one of claims 1-4, and a plurality of groups of first limit seats and second limit seats are respectively arranged at the bottom of the manhole cover body around the center and equidistantly distributed, the second connecting member passes through the first limit seat and the second limit seat correspondingly, and the elastic member is located between the first limit seat and the second limit seat.

6. A manhole cover according to claim 5, characterized in that: A plurality of groups of the first limiting seats are connected end to end in sequence to form a polygonal shape.

7. A manhole cover according to claim 5 or 6, characterized in that: The edge of the manhole cover body is provided with a positioning groove and a positioning protrusion extending radially outward along the manhole cover body.

8. A manhole cover according to claim 7, characterized in that: The positioning grooves and positioning protrusions are symmetrically distributed.

9. A manhole cover according to claim 5, 6 or 8, characterized in that: A plurality of reinforcing ribs are also arranged at the bottom of the manhole cover body.

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