CN104912112B - The concealed anti-stealing manhole cover of lockset - Google Patents

Abstract

The invention discloses a lock concealed anti-theft manhole cover, which comprises a well base and a well cover arranged in the well base. A connecting reinforcing rib is provided between them, and a vertical strip-shaped through hole is provided on the left side of the well cover, and a locking mechanism is provided in the well cover on the left side of the strip-shaped through hole; the locking mechanism includes a U-shaped connection 2 lock tongues and lock holes corresponding to the lock tongues on the side wall of the well base, 2 parallel fixed sleeves are arranged on the bottom surface of the upper cover plate, and a return spring is arranged in the fixed sleeve, and the lock tongue passes through the return spring The rear part is provided with a spring limiting block, and the return spring is arranged between the spring limiting block and the right side of the casing, and the right side is fixed to the inner wall of the casing. It adopts a hidden locking mechanism, and it is difficult to open without matching opening tools, which can better improve the anti-theft performance. In addition, the present invention has the advantages of simple and compact structure, low manufacturing cost and easy use.

Description

Lock hidden anti-theft manhole cover

technical field

The invention relates to an electric well cover, in particular to a lock hidden anti-theft well cover.

Background technique

The loss of manhole covers on the road is relatively common, causing greater harm to pedestrians and electric power safety. The main reason is that the opening of the manhole cover is relatively simple, and it can be easily opened by using an ordinary pick or an iron rod with a thin head; in addition, some manhole covers are very difficult to open because they are pressed tightly. It has caused great inconvenience to the work that needs to go down the ditch.

The existing anti-theft manhole cover usually adopts a lock structure, which can only be opened with a special key. There are three major shortcomings: 1. The keyhole is often buried by earth and rocks and cannot be opened. Every time you go out to work, you need to bring a special manhole cover opening key. Very inconvenient; 2. It is impossible to judge whether the well cover is locked or not from the outside, and the lock spring may pop up if it is opened rashly, which endangers the safety of personnel; 2. The key opening is easy to rust, which seriously affects the service life.

Contents of the invention

The invention provides a lock hidden anti-theft manhole cover to solve the problems in the prior art.

The present invention is achieved through the following technical solutions:

The hidden anti-theft manhole cover of the lock includes a well base and a well cover arranged in the well base. The manhole cover is a double-layer structure, including an upper cover plate and a lower cover plate, and a connection reinforcement is provided between the upper cover plate and the lower cover plate. The left side of the well cover is provided with a vertical strip-shaped through hole, and the well cover on the left side of the strip-shaped through hole is provided with a locking mechanism; the locking mechanism includes 2 dead bolts connected in a U shape, Set in the lock hole corresponding to the lock tongue on the side wall of the well seat, two parallel fixed sleeves are arranged on the bottom surface of the upper cover plate, a return spring is arranged in the fixed sleeve, and a spring is provided at the position where the lock tongue passes through the return spring. The limit block and the return spring are arranged between the spring limit block and the right side of the casing, and the right side is fixed to the inner wall of the casing.

For the above-mentioned lock hidden anti-theft manhole cover, a limit plate is installed on the bottom of the upper cover plate, and the limit plate is arranged on the right side of the deadbolt.

As for the above-mentioned lock hidden anti-theft manhole cover, the right side of the manhole cover is hinged to the well seat.

For the above-mentioned lock hidden anti-theft manhole cover, the area of the lower cover plate is smaller than that of the upper cover plate.

According to the above-mentioned lock hidden anti-theft manhole cover, the two ends of the fixed sleeve are provided with waterproof sealing rings.

The advantages of the present invention are:

1. The lockset of the present invention is a concealed setting, without a commonly used key and keyhole structure, and will not cause the problem that the keyhole is buried by earth and rocks and the well cover cannot be opened, or the key opening will be easily corroded after long-term use, and then It can effectively improve the service life of the well cover and parts.

2. The present invention is a double-layer structure, and the structural strength is improved by setting reinforcing ribs between the upper cover plate and the lower cover plate. Compared with the existing manhole cover, the weight can be reduced by more than 20%, and the manufacturing consumables are preferably reduced. Operational investment in electric power, municipal and other departments.

3. The locking mechanism adopts two lock bolts connected in U shape and the corresponding lock holes. The lock bolts are installed on the bottom of the upper cover plate through the fixed sleeve, and the anti-theft performance of the manhole cover can be improved through the two lock bolts and the lock holes. At the same time, the use of hidden locks increases the difficulty of being opened by ordinary tools, and the matching opening tools other than the present invention are difficult to open, which can avoid the shortage of existing anti-theft manhole covers, make the opening of manhole covers safer and more convenient, and prolong the service life .

4. The area of the lower cover plate is smaller than the area of the upper cover plate, which can avoid the problem that the existing manhole cover is compressed and difficult to open. The fixed sleeve is set at the bottom of the upper cover and waterproof seals are installed at both ends, which can prevent the fixed sleeve from being easily eroded by rainwater after long-term use, which will affect the action performance of the lock tongue, so as to improve the stability of locking .

5. The present invention also has the advantages of simple and compact structure, low manufacturing cost and easy use.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the description of the embodiments or the prior art.

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a sectional view taken along line A-A of Fig. 1 .

FIG. 3 is a schematic diagram of a partially enlarged structure of I in FIG. 2 .

Fig. 4 is a schematic diagram of the locking mechanism in Fig. 2, and the fixing sleeve is not shown in the figure.

Fig. 5 is a structural schematic diagram of the supporting opening tool of the present invention.

Reference signs: 1-well seat; 2-well cover; 3-upper cover plate; 4-lower cover plate; 5-connecting rib; 6-strip through hole; Fixed sleeve; 10-limit plate; 11-vertical bar; 12-hook portion; 13-handle.

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

As shown in Figures 1-4, this embodiment is a hidden anti-theft well cover with locks, including a well base 1 and a well cover 2 arranged in the well base 1. The well cover 2 is a double-layer structure, including an upper cover plate 3 and a lower cover plate. 4. A connecting reinforcement rib 5 is provided between the upper cover plate 3 and the lower cover plate 4, and a vertical strip-shaped through hole 6 is provided on the left side of the well cover 2, and a lock is provided in the well cover 2 on the left side of the strip-shaped through hole 6. mechanism; the locking mechanism includes two lock tongues connected in a U shape, and a lock hole corresponding to the lock tongue on the side wall of the well base. A back-moving spring is provided, and the position after the dead bolt 7 passes through the back-moving spring is provided with a spring limiter, and the back-moving spring is arranged between the spring limiter and the right side of the fixed sleeve 9, and the right side is fixed to the inner wall of the fixed sleeve 9 .

As shown in Figure 5, the supporting supporting opening tool provided by this embodiment includes a vertical rod 11, and a hook portion 12 perpendicular to the vertical rod 11 is installed at the lower end, and the end of the hook portion 12 is bent upward. When bar 11 is opened to U-shaped dead bolt and lockhole, the length of bar-shaped through hole 6 is greater than the length of crotch part 12, and its width can be slightly greater than the diameter of vertical bar 11, and in addition, the horizontal length of crotch part 12 should be Between the center of the through hole and the center of the U-shaped portion when the locking mechanism is locked or opened, it is convenient to complete the quick fit of the hook portion 12 and the dead bolt. The top of vertical bar 11 is provided with handle 13, when convenient well seat 1 and well cover 2 are opened, to the grasping of vertical bar 11, and when both are opened, well cover 2 can be mentioned upwards by handle 13 and crotch portion 12.

Specifically, the well cover 2 of this embodiment is a circular double-layer structure, and its right side is hinged to the well base 1. When the well cover is lifted, the left side of the well cover is driven up by the vertical rod 11 and rotates around the hinge axis. The opening and moving of the manhole cover 2 are made safer and more stable. The well cover 2 is composed of an upper cover plate 3 and a lower cover plate 4. The area of the lower cover plate 4 is smaller than that of the upper cover plate 3, which can avoid the problem that the well cover 1 is compressed and difficult to open. In order to improve the structural strength of the well cover 2, a plurality of crisscross reinforcing ribs 5 are arranged between the upper cover plate 3 and the lower cover plate 4, which can reduce the weight by more than 20% compared with the existing well cover and save materials, which is better. reduced manufacturing costs. A through hole 6 is provided on the left side of the well cover 2, and the locking mechanism is arranged between the upper cover plate 3 and the lower cover plate 4 on the left side of the through hole 6, and the two lock tongues connected in a U shape are connected by the fixed sleeve 9. Installed on the bottom surface of the upper cover plate 3, it can prevent the fixed sleeve 9 from being easily eroded by rainwater after long-term use, and then affect the action performance of the dead bolt 7, so as to improve the stability of locking.

The right side of dead bolt 7 is provided with limiting plate 10, and limiting plate 10 has the effect of two aspects, and the one, can limit the stroke that dead bolt 7 moves to the right side, prevents it from slipping down from fixed sleeve 9; The locking mechanism is set to be hidden to avoid man-made damage and improve its anti-theft performance. Further, in order to prevent water from entering the fixed sleeve 9 and affecting its performance, sealing rings can also be provided at both ends of the fixed sleeve 9 .

When in use, insert the supporting opening tool of the present invention from the strip-shaped through hole 6, turn the vertical bar 11 to align the hook portion 12 with the U-shaped dead bolt 7, and pull the vertical bar 11 to bend the hook portion 12 upwards. The folded end and the lock tongue 7 complete the overlap, and turning the vertical rod 11 can drive the lock tongue 7 to disengage from the lock hole 8, thereby opening the locking mechanism between the well cover 2 and the well base 1, and then lifting the well cover through the handle 13 2. That is, the opening of the power well can be completed, which is convenient for the maintenance of power and other equipment.

Compared with the existing anti-theft manhole cover, the locking mechanism in this embodiment is a hidden setting, without a commonly used key and lockhole structure, and there will be no problem that the lockhole is buried by earth and rocks and the manhole cover cannot be opened, or After a long time of use, the key opening will be corroded, which will increase the cost of maintenance and use and shorten its service life. At the same time, the manhole cover adopts a hidden lock, which increases the difficulty of opening it by ordinary tools. It is difficult to open the matching opening tool not in the present invention, which can avoid the shortage of the existing anti-theft manhole cover, has just the anti-theft function, is convenient to open, and has a long service life. .

The technical contents not described in detail in the present invention are all known technologies.

Claims (4)

1. Lock hidden anti-theft manhole cover, including a well base and a well cover arranged in the well base, characterized in that the well cover is a double-layer structure, including an upper cover and a lower cover, and the upper cover and the lower cover are A connecting reinforcing rib is arranged between them, and a vertical strip-shaped through hole is provided on the left side of the well cover, and a locking mechanism is provided in the well cover on the left side of the strip-shaped through hole; the locking mechanism includes a U-shaped connection 2 lock tongues and lock holes corresponding to the lock tongues on the side wall of the well base, 2 parallel fixed sleeves are arranged on the bottom surface of the upper cover plate, and a return spring is arranged in the fixed sleeve, and the lock tongue passes through the return spring The rear part is provided with a spring limiter, and the return spring is arranged between the spring limiter and the right side of the fixed sleeve, and the right side is fixed with the inner wall of the fixed sleeve, and the bottom of the upper cover is equipped with a limiter, so The limiting plate is located on the right side of the dead bolt. 2. The lock concealed anti-theft manhole cover according to claim 1, characterized in that, the right side of the manhole cover is hinged to the well seat. 3. The lock concealed anti-theft manhole cover according to claim 1, characterized in that the area of the lower cover is smaller than the area of the upper cover. 4. The lock concealed anti-theft manhole cover according to claim 1, characterized in that waterproof sealing rings are provided at both ends of the fixed sleeve.