CN213773480U

CN213773480U - Anti-theft well cover

Info

Publication number: CN213773480U
Application number: CN202021398283.7U
Authority: CN
Inventors: 林强强
Original assignee: Quanzhou Jieqiang Road Facility Co ltd
Current assignee: Quanzhou Jieqiang Road Facility Co ltd
Priority date: 2020-07-16
Filing date: 2020-07-16
Publication date: 2021-07-23
Anticipated expiration: 2030-07-16

Abstract

The utility model provides an anti-theft well lid, which comprises a well lid body, wherein the upper surface of the well lid body is provided with a mounting groove; the upper surface of the well lid body is fixedly provided with a cover plate for covering the notch of the mounting groove through a screw; mounting holes are formed in the positions of two sides of the bottom of the mounting groove; a horizontally arranged carrier plate is arranged in the mounting groove through an elastic assembly, wherein the carrier plate is tightly pressed on the lower wall of the cover plate through the elastic assembly; an induction piece is embedded in the upper surface of the carrier plate; a trigger part for triggering the induction part is embedded in the position, corresponding to the trigger part, of the lower wall of the cover plate; the induction part is electrically connected with a control circuit arranged in the mounting groove; the control circuit is electrically connected with an alarm installed in the installation groove, and the control circuit is configured to control the on/off of the alarm according to the output signal of the sensing piece. The utility model discloses can prevent effectively that the well lid is stolen.

Description

Anti-theft well cover

Technical Field

The utility model relates to a well lid manufacturing technology field, concretely relates to theftproof well lid.

Background

A cellar well is usually installed on a sewer of a city, and then a well cover is installed on the cellar well through a well base.

Then, some illegal people who steal the well lid appear in the society at present, once the well lid is stolen, the well mouth of the cellar well is exposed, and at night with dim light, pedestrians can easily fall into the well, so that serious physical damage is brought to the pedestrians;

but some lawless persons still can screw off the screw by force and take away the well lid, therefore some well lid designers are through can designing alarm device on the well lid, in case the well lid is taken away, alarm device then can report to the police immediately, but this kind of design can not effectually avoid the lawless person to take away the well lid because the well lid has been taken off, begins to report to the police this moment, and the lawless person can directly take away the well lid completely.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing an theftproof well lid.

In order to solve the technical problem, the technical scheme of the utility model is that:

an anti-theft well lid comprises a well lid body, wherein the upper surface of the well lid body is provided with a mounting groove; the upper surface of the well lid body is fixedly provided with a cover plate for covering the notch of the mounting groove through a screw; mounting holes are formed in the positions of two sides of the bottom of the mounting groove; a horizontally arranged carrier plate is arranged in the mounting groove through an elastic assembly, wherein the carrier plate is tightly pressed on the lower wall of the cover plate through the elastic assembly; an induction piece is embedded in the upper surface of the carrier plate; a trigger part for triggering the induction part is embedded in the position, corresponding to the trigger part, of the lower wall of the cover plate; the induction part is electrically connected with a control circuit arranged in the mounting groove; the control circuit is electrically connected with an alarm installed in the installation groove, and the control circuit is configured to control the on/off of the alarm according to the output signal of the sensing piece.

Preferably, the elastic assembly comprises a groove bottom fixing block fixedly arranged in the accommodating groove; a cavity is formed in the fixed block; two guide rods which are vertically arranged are symmetrically arranged in the cavity; the guide rod is connected with a sliding plate which is horizontally arranged in a sliding manner; a spring is sleeved on the rod wall of the guide rod positioned in the cavity, wherein two ends of the spring are respectively abutted against the lower wall of the sliding plate and the bottom wall of the cavity; the upper part of the sliding plate is fixedly connected with a vertically arranged movable rod, wherein the movable rod movably penetrates through the upper wall of the fixed block; the support plate is fixedly connected to the upper end of the movable rod.

Preferably, the induction part is a reed pipe; the trigger is a magnet.

Preferably, the control circuit comprises a first resistor, a second resistor, an NPN triode and a relay; the first resistor and the second resistor are connected in series; the other end of the first resistor is coupled to Vcc voltage, and the other end of the second resistor is coupled to the base electrode of the NPN triode; the reed switch is coupled to a connection point of the first resistor and the second resistor, and the other end of the reed switch is grounded; the emitter of the NPN triode is grounded, and the collector of the NPN triode is connected with the coil of the relay in series and then is coupled with Vcc voltage; and a normally open contact of the relay is connected in series with a power supply loop of the alarm.

Preferably, a sealing ring is arranged on the contact surface of the cover plate and the well lid body.

Compare prior art, the utility model has the advantages that:

the utility model discloses an establish the mounting hole in the mounting groove of well lid body to set up the apron that seals the mounting groove on the well lid body, thus can use the locking screw to install the utility model on the well seat through the mounting hole, guarantee that the locking screw is located the mounting groove and is sealed by the apron, so the illegal person can't unscrew the locking screw easily and take away the well lid; and the utility model discloses a be equipped with the alarm in the mounting groove, in case the cover plate is opened to the lawless person, the alarm can report to the police immediately and indicate to frighten away the lawless person, make the lawless person dare not to continue to unscrew locking screw and take away the well lid.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is a circuit diagram of the control circuit.

Reference numerals: 1. a well lid body; 11. mounting grooves; 12. mounting holes; 2. a cover plate; 31. a fixed block; 32. a cavity; 33. a guide bar; 34. a slide plate; 35. a movable rod; 36. a spring; 4. a carrier plate; 5. a sensing member; 6. a trigger; 7. an alarm; 8. and (5) sealing rings.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings, so that the technical solution of the present invention can be more easily understood and grasped.

Example (b):

referring to fig. 1, the embodiment provides an anti-theft manhole cover, which includes a manhole cover body 1, wherein an installation groove 11 is formed in an upper surface of the manhole cover body 1; the upper surface of the well lid body 1 is fixedly provided with a cover plate 2 which covers the notch of the mounting groove 11 through a screw; mounting holes 12 are formed in the two sides of the bottom of the mounting groove 11; a horizontally arranged carrier plate 4 is arranged in the mounting groove 11 through an elastic component, wherein the carrier plate 4 is tightly pressed on the lower wall of the cover plate 2 through the elastic component; the upper surface of the carrier plate 4 is internally embedded with an induction piece 5; a trigger piece 6 for triggering the induction piece 5 is embedded at the position of the lower wall of the cover plate 2 corresponding to the trigger piece 6; the induction part 5 is electrically connected with a control circuit arranged in the mounting groove 11; the control circuit is electrically connected with the alarm 7 installed in the installation groove 11, and the control circuit is configured to control the on/off of the alarm 7 according to the output signal of the sensing piece 5. The alarm 7, the control circuit and the induction part 5 are all powered by mains supply, and the control center controls whether the power is off or not. The alarm 7 may be a buzzer.

Through the arrangement, the power supply of the control center control alarm 7 is firstly cut off, when the well lid is installed, the cover plate 2 is taken down, and the utility model is installed on the well seat through the installation hole 12 in the installation groove 11 and the locking screw; the cover body is arranged on the well lid body 1 through screws, at the moment, under the action of elastic assembly, the support plate 4 is pressed on the lower wall of the cover plate 2, so that the induction piece 5 is triggered by the trigger piece 6, and the control circuit cannot control the alarm 7 to work; once a lawless person takes off the cover plate 2, the sensing piece 5 is separated from the triggering piece 6 at the moment, the sensing piece 5 is not triggered, and therefore the control circuit controls the alarm 7 to give an alarm. So that the manhole cover can be threatened by the illegal person, and the illegal person is dared not to unscrew the locking screw in the mounting groove 11 and take away the manhole cover.

Referring to fig. 2, the elastic member includes a groove bottom fixing block 31 fixedly installed in the accommodating groove; the fixed block 31 is internally provided with a cavity 32; two guide rods 33 which are vertically arranged are symmetrically arranged in the cavity 32; a sliding plate 34 which is horizontally arranged is connected on the guide rod 33 in a sliding way; a spring 36 is sleeved on the rod wall of the guide rod 33 positioned in the cavity 32, wherein two ends of the spring 36 respectively abut against the lower wall of the sliding plate 34 and the bottom wall of the cavity 32; the upper part of the sliding plate 34 is fixedly connected with a vertically arranged movable rod 35, wherein the movable rod 35 movably penetrates through the upper wall of the fixed block 31; the carrier plate 4 is fixedly connected to the upper end of the movable rod 35.

With the above arrangement, when the upper cover plate 2 is mounted, the spring 36 is in a compressed state, so that the slide plate 34 keeps a tendency to move upward, so that the carrier plate 4 is always pressed against the lower wall of the cover plate 2.

The induction part 5 is a reed switch; the trigger 6 is a magnet.

As shown in fig. 3, the control circuit includes a first resistor R1, a second resistor R2, an NPN transistor, and a relay K1; the first resistor R1 and the second resistor R2 are connected in series; the other end of the first resistor R1 is coupled to Vcc voltage, and the other end of the second resistor R2 is coupled to the base of an NPN triode Q1; the reed switch Rw is coupled to a connection point of the first resistor R1 and the second resistor R2, and the other end of the reed switch Rw is grounded; an emitter electrode of the NPN triode Q1 is grounded, and a collector electrode of the NPN triode Q1 is coupled with the Vcc voltage after being connected with a coil of the relay K1 in series; the normally open contact K1-1 of the relay is connected in series with the power supply circuit of the alarm 7.

When the cover plate 2 is taken down, the reed pipe Rw is separated from the magnet, and at the moment, the reed pipe Rw is in a disconnected state, so that a high level is input to the base electrode of the NPN triode Q1 through the second resistor R2, the NPN triode Q1 is connected, the coil of the relay K1 is electrified to adsorb the normally open contact K1-1 of the relay, the normally open contact K1-1 is closed, the power supply loop of the buzzer is connected, and the buzzer starts working and buzzing when being electrified; when the cover plate 2 is not taken down, the reed switch Rw is triggered by the magnet to be in a closed state, so that the second resistor R2 inputs a low level to the base electrode of the NPN triode Q1, the NPN triode Q1 is cut off, the coil of the relay K1 cannot be powered at the moment, the normally open contact K1-1 of the relay is in a disconnected state, and the power supply loop of the buzzer is disconnected and cannot be powered to work.

The diode D1 is connected in parallel in reverse at two ends of the coil of the relay K1, because the coil can generate a strong back electromotive force at the moment of power failure and can affect other elements, the diode D1 can consume the back electromotive force, and the effect of the back electromotive force on other elements is reduced.

And a sealing ring 8 is arranged on the contact surface of the cover plate 2 and the well lid body 1. The sealing ring 8 is provided to prevent the installation groove 11 from being soaked with water.

The utility model discloses a through setting up mounting hole 12 in the mounting groove 11 of well lid body 1, and set up the apron 2 that seals mounting groove 11 on well lid body 1, thus can use the locking screw to install the utility model on the well seat through mounting hole 12, guarantee that the locking screw is located mounting groove 11 and is sealed by apron 2, so the illegal person can't unscrew the locking screw easily and take away the well lid; and the utility model discloses a be equipped with alarm 7 in the mounting groove 11, in case the lawless person opens apron 2, alarm 7 can report to the police immediately and indicate to frighten away the lawless person, make the lawless person dare not to continue to unscrew locking screw and take away the well lid.

The above is only the typical example of the utility model, in addition, the utility model can also have other multiple concrete implementation manners, and the technical scheme that all adopt equivalent replacement or equivalent transform to form all falls within the scope of the utility model.

Claims

1. The utility model provides an theftproof well lid, includes well lid body (1), its characterized in that: the upper surface of the well lid body (1) is provided with a mounting groove (11); the upper surface of the well lid body (1) is fixedly provided with a cover plate (2) which covers the notch of the mounting groove (11) through a screw; mounting holes (12) are formed in the two sides of the bottom of the mounting groove (11); a horizontally arranged carrier plate (4) is arranged in the mounting groove (11) through an elastic component, wherein the carrier plate (4) is pressed on the lower wall of the cover plate (2) through the elastic component; an induction piece (5) is embedded in the upper surface of the carrier plate (4); a trigger piece (6) for triggering the induction piece (5) is embedded in the position, corresponding to the trigger piece (6), of the lower wall of the cover plate (2); the induction piece (5) is electrically connected with a control circuit arranged in the mounting groove (11); the control circuit is electrically connected with an alarm (7) installed in the installation groove (11), and the control circuit is configured to control the on/off of the alarm (7) according to the output signal of the sensing piece (5).

2. The anti-theft well lid according to claim 1, characterized in that: the elastic component comprises a groove bottom fixed block (31) fixedly arranged in the accommodating groove; the fixed block (31) is internally provided with a cavity (32); two guide rods (33) which are vertically arranged are symmetrically arranged in the cavity (32); a sliding plate (34) which is horizontally arranged is connected on the guide rod (33) in a sliding way; a spring (36) is sleeved on the rod wall of the guide rod (33) positioned in the cavity (32), wherein two ends of the spring (36) are respectively abutted against the lower wall of the sliding plate (34) and the bottom wall of the cavity (32); the upper part of the sliding plate (34) is fixedly connected with a vertically arranged movable rod (35), wherein the movable rod (35) movably penetrates through the upper wall of the fixed block (31); the carrier plate (4) is fixedly connected to the upper end of the movable rod (35).

3. The anti-theft well lid according to claim 2, characterized in that: the induction part (5) is a reed switch; the trigger piece (6) is a magnet.

4. The anti-theft well lid according to claim 3, characterized in that: the control circuit comprises a first resistor, a second resistor, an NPN triode and a relay; the first resistor and the second resistor are connected in series; the other end of the first resistor is coupled to Vcc voltage, and the other end of the second resistor is coupled to the base electrode of the NPN triode; the reed switch is coupled to a connection point of the first resistor and the second resistor, and the other end of the reed switch is grounded; the emitter of the NPN triode is grounded, and the collector of the NPN triode is connected with the coil of the relay in series and then is coupled with Vcc voltage; and a normally open contact of the relay is connected in series with a power supply loop of the alarm (7).

5. The anti-theft well lid according to claim 4, characterized in that: and a sealing ring (8) is arranged on the contact surface of the cover plate (2) and the well lid body (1).