CN201298276Y - Pendulum and inverse-ratio rod public impending earthquake automatic alarm system for urban areas - Google Patents

Abstract

The utility model relates to a pendulum and inverse ratio rod public impending earthquake automatic alarm system for urban areas. An alarm part device frame is arranged in the middle of a cabinet body. A plurality of pendulum tip shaft bases are arranged on the panel of the device frame. A pendulum tip shaft extends from the central part of each base. Each tip shaft is provided with an annular pendulum tip shaft sleeve. Each annular pendulum tip shaft sleeve is connected with a pendulum inverse-ratio rod. The lower part of the annular pendulum tip shaft sleeve is connected with a pendulum connecting rod. The lower end of the connecting rod is connected with a pendulum. An annular contact disc is arranged at the top end of each pendulum inverse-ratio rod. Four screws are arranged around each annular contact disk and used to adjust the displacement of the contact disk. Each group of pendulums is connected with the corresponding alarm signal lamp line. When the impending earthquake ground surface shakes slightly, the inverse-ratio rod above the pendulum shakes and collides with the surrounding fixed contact, the circuit is triggered to close and an impending earthquake signal is sent out. Groups of pendulums are arranged in the cabinet body. The height of the cabinet body can be 1.5 to 4 meters. Thus, accurate, simple and multi-level impending earthquake alarm can be given out.

Description

The pendulum and inversing bar type town public earthquake automatic alarm system

One, technical field

The utility model relates to a kind of public earthquake automatic alarm system, especially with the pendulum and inversing bar type town public earthquake automatic alarm system, it is the warning benchmark of each group to add rocking with the collision of fixed contact generation on every side of inverse ratio bar on many groups pendulum, and the possession table rocks the imminent earthquake alarm technique of trigger circuit closo.

Two, background technology

Nowadays, though be used to forecast earthquake and the instrument kind of monitoring more also very advanced, but because people lack knowledge and skills to the origin of earthquake and selection monitoring place etc., difficulty can be made accurate forecast and cause a large amount of common people's injures and deaths before violent earthquake was arrived, the Wenchuan violent earthquake is exactly the example of a bitterness, consequently, people wish that urgently this state can be improved early.

Three, utility model content

Because it also is slightly to rock from the face of land that the destructiveness of earthquake is rocked, consequently, the utility model is put forward a kind of pendulum and inversing bar type town public earthquake automatic alarm system, can be independent as a county town and small towns and village use, the imminent earthquake alarm signal that this warning system can also be measured 1-12 kinds of different stages to local and on every side cities and towns give the alarm, and this warning system can also record earthquake magnitude the highest in the seismic process, the automatic earthquake magnitude register that also can be used as the national earthquake net uses, if these rank alarm signals are transported to the firsthand information that department of government concerned can be used as the disaster relief again.

The solution that the utility model is taked is: a kind of pendulum and inversing bar type town public earthquake automatic alarm system, comprise a warning system cabinet low bottom-disc, and the below, chassis is established a cabinet and is landed mounting seat, and a cabinet shell is established in the top, chassis.Set up a warning system part device frame at the cabinet central part, settle a plurality of pendulum point cutting edge of a knife or a sword axle pedestals on the device frame lower panel, all stretch out a pendulum point cutting edge of a knife or a sword axle from each pendulum point cutting edge of a knife or a sword axle pedestal middle part, each pendulum point cutting edge of a knife or a sword axle annular pendulum point cutting edge of a knife or a sword axle sleeve that matches, the anti-sway toe cutting edge of a knife or a sword axle sleeve banking pin that portals is established in axle sleeve top, and each sharp cutting edge of a knife or a sword axle sleeve top all connects a pendulum inverse ratio bar; Point cutting edge of a knife or a sword axle sleeve below connects a pendulum connecting rod, the connecting rod lower end pendulum that joins; At each pendulum inverse ratio masthead end an annular contact dish is set all, is provided with four pieces around each annular contact dish and regulates contact dish displacement screw and regulate annular contact dish displacement seat.When imminent earthquake, with rocking of pendulum top inverse ratio bar and fixed contact on every side produce collision and closed circuit from sending warning.

Be provided with device frame top on warning system part device frame top and stretch out set square, be installed on the panel of warning system part device frame a plurality of imminent earthquake rank blue lights and each pendulum group also be provided with an energising number of times register and conduction time integrator; Many miniature relays and a plurality of contactor are installed on two walls about the cabinet shell; Respectively establish a pair of cabinet door before and after the cabinet, the cabinet door handle is arranged on the cabinet door, be provided with cabinet in the cabinet bottom and land mounting screw; This warning system is arranged with other pendulum group of 8 levels, can rock the gap around the inverse ratio bar of A pendulum group and be about 0.5MM, can rock the gap around the inverse ratio bar of B pendulum group and be about 1MM, can rock the gap around the inverse ratio bar of C pendulum group and be about 2MM, can rock the gap around the inverse ratio bar of D pendulum group and be about 4MM, can rock the gap around the inverse ratio bar of E pendulum group and be about 8MM, can rock the gap around the inverse ratio bar of F pendulum group and be about 16MM, can rock the gap around the inverse ratio bar of G pendulum group and be about 32MM, can rock the gap around the inverse ratio bar of H pendulum group and be about 64MM, constitute and to rock the gap with the difference around the inverse ratio bar and work and to send multi-level alarm.The warning system of 8 pendulum groups, A, B, C, D pendulum group are in the place ahead of cabinet, and E, F, G, H pendulum group are in the rear of cabinet.

This warning system is provided with a circumscripted power line, each pendulum group is all in identical circuit, with A pendulum group is example: establish a power lead that leads to A group pendulum, article one, transfer to A group energising number of times register and conduction time integrator electric wire, article one, A organizes annular contact dish collision and connects output line, article one, carry the alarm signal line to a distant place, one connects A level imminent earthquake alarm signal lamp line, and electric current feeds back to the miniature relay line and is connected with one and transfers to public alert speaker line; Be provided with a public alert speaker, A level imminent earthquake warning light, B level imminent earthquake warning light, C level imminent earthquake warning light, D level imminent earthquake warning light, E level imminent earthquake warning light and F level imminent earthquake warning light in public refuge; Being provided with 8 miniature relays in the circumscripted power line lower end is the power lead of every group of input pendulum; 8 annular contact dish collisions are connected the output line terminal and are provided with 8 miniature relays and connect electric current respectively and feed back to the miniature relay line and transfer to public alert speaker line.

Be provided with A, B, C, D, E, F, G, H, 8 pendulum groups in this warning system cabinet, also can be with in like manner being merged into the warning system that 6-12 organizes pendulum.And land four angles of mounting seat at cabinet and be provided with and land mounting screw; Constituting warning system side's cabinet is a kind of console mode, makes the height of warning system cabinet shell can be fabricated onto 1.5 meters high to 4 meters.

Traverse the one flat plate body on warning system part device frame top, constituent apparatus frame top becomes two protruding set square planes, from the below, plane of set square, an annular contact dish is set all around each pendulum inverse ratio masthead end promptly.

Stretch out pendulum point cutting edge of a knife or a sword axle from pendulum point cutting edge of a knife or a sword axle pedestal middle part, each pendulum point cutting edge of a knife or a sword axle annular pendulum point cutting edge of a knife or a sword axle sleeve that all matches, promptly internal upper part is opened a not ring of logical aperture.Each sharp cutting edge of a knife or a sword axle sleeve below connects a pendulum connecting rod, inserts a pendulum inverse ratio bar above sharp cutting edge of a knife or a sword axle sleeve, and the distance of pendulum inverse ratio masthead end and pendulum point cutting edge of a knife or a sword axle is longer than the pendulum connecting rod.

This warning system is in series with a time relay in every group of output alarm signal circuit.And in each pendulum group, all be provided with one the energising number of times register and one conduction time integrator, the energising number of times register and conduction time integrator all use " rolling the word formula ".

The utility model advantage is: this warning system can be sent other imminent earthquake alarms of a plurality of level, makes the common people in earthquake region can get to the face of land and rocks multi-level warning informations such as alarm, common evacuation alarm, rapid evacuation alarm and emergency evacuation alarm.This warning system can consciously not stop alarm each the warning later if the face of land has when rocking, but the next face of land is rocked and can be given the alarm as usual automatically, this keep automatically repeatedly to report to the police to exempt manually go to regulate, it can write down the highest earthquake magnitude again automatically later in earthquake.When the pendulum of alarm can not give the alarm when static, promptly in this state, can never produce buildings and cave in without foundation.When if pendulum begins to rock alarm and gives the alarm, be exactly the face of land in rocking, also before the earthquake million or small earthquakes involve extremely.

Four, description of drawings

Fig. 1 is this warning system front critical piece distribution schematic diagram

Fig. 2 is this warning system side critical piece distribution schematic diagram

Fig. 3 is this warning system back critical piece distribution schematic diagram

Fig. 4 is this warning system top diagrammatic cross-section

Fig. 5 is this warning system main circuit distribution key diagram

Fig. 6 is warning light and the alert speaker implementation figure of three grades of this warning system A, B, C

Fig. 7 is warning light and the alert speaker implementation figure of three grades of this warning system D, E, F

Among the figure: 1, warning system cabinet low bottom-disc, 2, cabinet lands mounting seat, 3, the cabinet shell, 4, warning system part device frame, 5, pendulum point cutting edge of a knife or a sword axle pedestal, 6, pendulum point cutting edge of a knife or a sword axle, 7, pendulum point cutting edge of a knife or a sword axle sleeve, 8, the anti-sway toe cutting edge of a knife or a sword axle sleeve banking pin that portals, 9, pendulum inverse ratio bar, 10, the pendulum connecting rod, 11, pendulum, 12, imminent earthquake rank blue light, 13, annular contact dish, 14, regulate annular contact dish displacement seat, 15, regulate contact dish displacement screw, 16, set square is stretched out, 17 in device frame top, energising number of times register, 18, conduction time integrator, 19, miniature relay, 20, contactor, 21, the cabinet door, 22, the cabinet door handle, 23, cabinet lands mounting screw, and 24, circumscripted power line, 25, lead to A group pendulum line, 26, transfer to A group energising number of times register and conduction time integrator electric wire, 27, connect output line, 28 during the collision of A group contact dish, carry alarm signal line, 29 to a distant place, connect A level imminent earthquake alarm signal lamp line, 30, electric current feeds back to A2 miniature relay line, 31, transfer to public alert speaker line, 32, public alert speaker, 33, public A level imminent earthquake warning light, 34, public B level imminent earthquake warning light, 35, public C level imminent earthquake warning light, 36, public D level imminent earthquake warning light, 37, public E level imminent earthquake warning light, 38, public F level imminent earthquake warning light, 39, the time relay.

Can rock the pendulum group that the gap is about 0.5MM around A, the inverse ratio bar, can rock the pendulum group that the gap is about 1MM around B, the inverse ratio bar, can rock the pendulum group that the gap is about 2MM around C, the inverse ratio bar, can rock the pendulum group that the gap is about 4MM around D, the inverse ratio bar, can rock the pendulum group that the gap is about 8MM around E, the inverse ratio bar, can rock the pendulum group that the gap is about 16MM around F, the inverse ratio bar, the pendulum group that the gap is about 32MM can be rocked around G, the inverse ratio bar, the pendulum group that the gap is about 64MM can be rocked around H, the inverse ratio bar.A1, A group pendulum connects power supply relay, A2, B group pendulum connects power supply relay, A3, C group pendulum connects power supply relay, A4, D group pendulum connects power supply relay, A5, E group pendulum connects power supply relay, A6, F group pendulum connects power supply relay, and A7, G group pendulum connects power supply relay, and A8, H group pendulum connects power supply relay.The miniature relay of B1, the public alert speaker of connection A level, the miniature relay of B2, the public alert speaker of connection B level, the miniature relay of B3, the public alert speaker of connection C level, the miniature relay of B4, the public alert speaker of connection D level, the miniature relay of B5, the public alert speaker of connection E level, the miniature relay of B6, the public alert speaker of connection F level, the miniature relay of B7, the public alert speaker of connection G level, the miniature relay of B8, the public alert speaker of connection H level.

Five, embodiment

With reference to the accompanying drawings the utility model is remake description below.

Referring to Fig. 1, Fig. 2, Fig. 3, a kind of pendulum and inversing bar type town public earthquake automatic alarm system, comprise a warning system cabinet low bottom- disc 1,1 below, chassis is established a cabinet and is landed mounting seat 2 and top and establish a cabinet shell 3, set up a warning system part device frame 4 at the cabinet central part, settle a plurality of pendulum point cutting edge of a knife or a sword axle pedestals 5 on device frame 4 lower panel, stretch out a pendulum point cutting edge of a knife or a sword axle 6 from each pendulum point cutting edge of a knife or a sword axle pedestal 5 middle part, each pendulum point cutting edge of a knife or a sword axle 6 pendulum point cutting edge of a knife or a sword axle sleeve 7 that matches, promptly internal upper part has a not ring of logical aperture.The anti-sway toe cutting edge of a knife or a sword axle sleeve banking pin 8 that portals is established in axle sleeve 7 tops, and axle sleeve 7 can not be shifted out outside the sharp cutting edge of a knife or a sword.Each sharp cutting edge of a knife or a sword axle sleeve 7 top all connects a pendulum inverse ratio bar 9, and sharp cutting edge of a knife or a sword axle sleeve 7 belows connect a pendulum connecting rod 10, and pendulum connecting rod 10 is longer than with the distance of the sharp cutting edge of a knife or a sword axle 6 of pendulum in pendulum inverse ratio bar 9 tops, the connecting rod 10 lower ends pendulum 11 that joins.On each pendulum inverse ratio bar 9 top an annular contact dish 13 is set all, be provided with four around each annular contact dish 13 and regulate annular contact dish displacement seat 14 and regulate contact dish displacement screw 15, be used for regulating the centre that inverse ratio bar 9 all is located at annular contact dish 13.When the earthquake arriving face of land begins slightly to rock, pendulum 11 also can produce and rock, and under the effect of returning of the inertia of pendulum 11, increased the amplitude of rocking, cause the inverse ratio bar 9 of balance staff top in rocking greatly, to connect circuit for alarming and send warning with annular contact dish 13 generation collisions on every side, be provided with device frame top on warning system part device frame 4 tops and stretch out set square 16, be used for installing the annular contact dish displacement of adjusting seat 14.On the panel of warning system part device frame 4, be installed on a plurality of imminent earthquake rank blue lights 12, on the panel of warning system part device frame 4 each pendulum group also be provided with an energising number of times register 17 and conduction time integrator 18, be the highest earthquake magnitude of minute book secondary earthquake and the time that upgrading is separated by.Many miniature relays 19 and a plurality of contactor 20 are installed on two walls about cabinet shell 3.Respectively establish a pair of cabinet door 21 and cabinet door handle 22 before and after the cabinet, the cabinet bottom is provided with cabinet and lands mounting screw 23 etc.

Referring to Fig. 4, this warning system branch has the pendulum group of 8 grades, can rock the gap around the inverse ratio bar 9 of A pendulum group and be about 0.5MM, can rock the gap around the inverse ratio bar of B pendulum group and be about 1MM, can rock the gap around the inverse ratio bar of C pendulum group and be about 2MM, can rock the gap around the inverse ratio bar of D pendulum group and be about 4MM, can rock the gap around the inverse ratio bar of E pendulum group and be about 8MM, can rock the gap around the inverse ratio bar of F pendulum group and be about 16MM, can rock the gap around the inverse ratio bar of G pendulum group and be about 32MM, can rock the gap around the inverse ratio bar of H pendulum group and be about 64MM, can rock the gap with the difference around the inverse ratio bar and work and to send multi-level alarm.Make the face of land of different earthquake magnitudes rock the warning that to send appropriate level like this.The warning system of 8 pendulum groups, A, B, C, D pendulum group are in the place ahead of cabinet, and E, F, G, H pendulum group are in the rear of cabinet.

Referring to Fig. 5, Fig. 6, Fig. 7, this warning system is provided with a circumscripted power line 24, each pendulum group is all in identical circuit, with A pendulum group is example: establish a power lead 25 that leads to A group pendulum, article one, transfer to A group energising number of times register and conduction time integrator electric wire 26, article one, A organizes annular contact dish collision and connects output line 27, article one, carry alarm signal line 28 to a distant place, article one, connecting 29, one electric currents of A level imminent earthquake alarm signal lamp line feeds back to A2 miniature relay line 30 and one and transfers to public alert speaker line 31.Be provided with a public alert speaker 32 in public refuge, A level imminent earthquake warning light 33, B level imminent earthquake warning light 34, C level imminent earthquake warning light 35, D level imminent earthquake warning light 36, E level imminent earthquake warning light 37, F level imminent earthquake warning lights 38 etc. make the common people that take refuge be well understood to earthquake situations like this.This warning system is provided with the time relay 39 in the output alarm signal circuit simultaneously, being connected on the back certain hour of crossing that at every turn gives the alarm can get rid of automatically, if the face of land also can be kept automatically in rocking and be given the alarm, if the face of land does not have when rocking and can consciously stop alarm, but the next face of land has in the program circuit that rocks and can give the alarm as usual automatically again, this keep automatically repeatedly to report to the police to exempt manually go to regulate.Be provided with 8 miniature relay A1, A2, A3, A4, A5, A6 in circumscripted power line 24 lower ends, A7, A8 are the power lead of every group of input pendulum.8 annular contact dish collisions are connected output line 27 terminals and are provided with 8 miniature relay B1, B2, B3, B4, B5, B6, B7, B8 and connect electric current and feed back to A2 miniature relay line 30 and transfer to public alert speaker line 31 for dividing.For example B1 is back to A2, and it is the secondary power supply line that B2 is back to the A3 miniature relay, i.e. the alarm signal of A level is as the pendulum power supply of A2 miniature relay.

When the imminent earthquake face of land begins slightly to rock, being fixed on warning system cabinet low bottom-disc 1 on the face of land also follows to produce and rocks, this slightly rocks by the pendulum connecting rod and passes to pendulum 11 10 times, and under the effect of returning of the inertia of pendulum 11, increased the amplitude of rocking, cause the inverse ratio bar 9 of balance staff upper end in rocking greatly, to connect circuit for alarming with annular contact dish 13 generation collisions on every side, electric current produces closure after being transported to miniature relay B1, the output alarm signal is disseminated to local alarm speaker 32 and lights A level warning light, thereby sends the alarm of A level imminent earthquake.And also have one road signal wire to be transmitted back to A2, serve as the power supply of A2.When expansion is rocked on the imminent earthquake intensity increase face of land, rock intensity and the amplitude of pendulum also increase thereupon, and under the effect of returning of pendulum inertia, the inverse ratio bar 9 of B group also produces collision with annular contact dish 13 on every side and connects circuit for alarming, electric current produces closure after being transported to miniature relay B2, the alarm signal of output B level is disseminated to local alarm speaker, thereby sends the alarm of B level imminent earthquake, and multi-level imminent earthquake alarm is principle and producing thus also.Since all have in each group alarm signal output line one the tunnel connect " rolling the word formula " energising number of times register 17 and conduction time integrator 18, make in energising number of times register 17, all increased behind the every grade of signal that gives the alarm a numeral and conduction time integrator 18 write down the time, consequently, learn the largest magnitude of this secondary earthquake, also know its every liter one rank institute elapsed time simultaneously.8 kinds of different stage imminent earthquakes alarm that this warning system is sent is all by the A level imminent earthquake alarm beginning, when the earthquake of a certain cities and towns comes interim, its A level imminent earthquake alarm signal is disseminated to cities and towns and the rural area local and four directions fast, make people can learn that this is that common evacuation alarm needn't be alarmed, when if warning system is sent the imminent earthquake alarm of B level and C level at once again, the common people that evacuate need emergency evacuation, consequently reach the earthquake evacuation and can alleviate the death toll that earthquake causes again in order.This warning system is a console mode, and general cabinet height is about 1.5-4 meters, if pendulum 11 has when slightly rocking, inverse ratio bar 9 its shaking amplitudes of top consequently reach accurately simple again than several times greatly of pendulums 11.

Claims (8)

1, a kind of pendulum and inversing bar type town public earthquake automatic alarm system, comprise a warning system cabinet low bottom-disc (1), chassis (1) below is established a cabinet and is landed mounting seat (2), a cabinet shell (3) is established in top, chassis (1), it is characterized in that: set up a warning system part device frame (4) at the cabinet central part, settle a plurality of pendulum point cutting edge of a knife or a sword axle pedestals (5) on device frame (4) lower panel, all stretch out a pendulum point cutting edge of a knife or a sword axle (6) from each pendulum point cutting edge of a knife or a sword axle pedestal (5) middle part, each pendulum point cutting edge of a knife or a sword axle (6) annular pendulum point cutting edge of a knife or a sword axle sleeve (7) that matches, the anti-sway toe cutting edge of a knife or a sword axle sleeve banking pin (8) that portals is established in axle sleeve (7) top, and each sharp cutting edge of a knife or a sword axle sleeve (7) top all connects a pendulum inverse ratio bar (9); Point cutting edge of a knife or a sword axle sleeve (7) below connects a pendulum connecting rod (10), connecting rod (10) the lower end pendulum (11) that joins; On each pendulum inverse ratio bar (9) top an annular contact dish (13) is set all, each annular contact dish (13) is provided with four pieces all around and regulates contact dish displacement screw (15) and regulate annular contact dish displacement seat (14); Be provided with device frame top on warning system part device frame (4) top and stretch out set square (16), be installed on a plurality of imminent earthquake rank blue lights (12) and each pendulum group on the panel of warning system part device frame (4) and also be provided with an energising number of times register (17) and integrator conduction time (18); Many miniature relays (19) and a plurality of contactor (20) are installed on two walls about cabinet shell (3); Respectively establish a pair of cabinet door (21) before and after the cabinet, cabinet door handle (22) is arranged on the cabinet door (21), be provided with cabinet in the cabinet bottom and land mounting screw (23); This warning system is arranged with other pendulum group of 8 levels, the inverse ratio bar (9) of A pendulum group can rock the gap on every side and be about 0.5MM, the inverse ratio bar (9) of B pendulum group can rock the gap on every side and be about 1MM, the inverse ratio bar (9) of C pendulum group can rock the gap on every side and be about 2MM, the inverse ratio bar (9) of D pendulum group can rock the gap on every side and be about 4MM, the inverse ratio bar (9) of E pendulum group can rock the gap on every side and be about 8MM, the inverse ratio bar (9) of F pendulum group can rock the gap on every side and be about 16MM, the inverse ratio bar (9) of G pendulum group can rock the gap on every side and be about 32MM, and the inverse ratio bar (9) of H pendulum group can rock the gap on every side and be about 64MM; The warning system of 8 pendulum groups, A, B, C, D pendulum group are in the place ahead of cabinet, and E, F, G, H pendulum group are in the rear of cabinet; This warning system is provided with a circumscripted power line (24), each pendulum group is all in identical circuit, with A pendulum group is example: establish a power lead (25) that leads to A group pendulum, article one, transfer to A group energising number of times register and conduction time integrator electric wire (26), article one, A organizes annular contact dish collision and connects output line (27), article one, carry alarm signal line (28) to a distant place, article one, connect A level imminent earthquake alarm signal lamp line (29), electric current feeds back to (A2) miniature relay line (30) and is connected with one and transfers to public alert speaker line (31); Be provided with a public alert speaker (32), A level imminent earthquake warning light (33), B level imminent earthquake warning light (34), C level imminent earthquake warning light (35), D level imminent earthquake warning light (36), E level imminent earthquake warning light (37) and F level imminent earthquake warning light (38) in public refuge; Be provided with the power lead of 8 miniature relays (A1, A2, A3, A4, A5, A6, A7, A8) for every group of input pendulum in circumscripted power line (24) lower end; 8 annular contact dish collisions are connected output line (27) terminal and are provided with 8 miniature relays (B1, B2, B3, B4, B5, B6, B7, B8) and connect electric current respectively and feed back to (A2) miniature relay line (30) and transfer to public alert speaker line (31).

2, pendulum and inversing bar type town public earthquake automatic alarm according to claim 1 system, it is characterized in that: be provided with A, B, C, D, E, F, G, H, 8 pendulum groups in this warning system cabinet, also can be with in like manner being merged into the warning system that 6-12 organizes pendulum.

3, pendulum and inversing bar type town public earthquake automatic alarm according to claim 1 system is characterized in that: land four angles of mounting seat (2) at cabinet and be provided with and land mounting screw (23); Constituting warning system side's cabinet is a kind of console mode, and the height of warning system cabinet shell (3) can be fabricated onto 1.5 meters to 4 meters.

4, pendulum and inversing bar type town public earthquake automatic alarm according to claim 1 system, it is characterized in that: traverse the one flat plate body on warning system part device frame (4) top, constituent apparatus frame (4) top becomes two protruding set squares (16) plane, from the below, plane of set square (16), an annular contact dish (13) is set all on every side on each pendulum inverse ratio bar (9) top promptly.

5, pendulum and inversing bar type town public earthquake automatic alarm according to claim 1 system, it is characterized in that: stretch out pendulum point cutting edge of a knife or a sword axle (6) from pendulum point cutting edge of a knife or a sword axle pedestal (5) middle part, each pendulum point cutting edge of a knife or a sword axle (6) annular pendulum point cutting edge of a knife or a sword axle sleeve (7) that all matches, promptly internal upper part is opened a not ring of logical aperture.

6, pendulum and inversing bar type town public earthquake automatic alarm according to claim 1 system, it is characterized in that: sharp cutting edge of a knife or a sword axle sleeve (7) below connects a pendulum connecting rod (10), insert a pendulum inverse ratio bar (9) in sharp cutting edge of a knife or a sword axle sleeve (7) top, the distance of pendulum inverse ratio bar (9) top and pendulum point cutting edge of a knife or a sword axle (6) is longer than pendulum connecting rod (10).

7, pendulum and inversing bar type town public earthquake automatic alarm according to claim 1 system, it is characterized in that: this warning system is in series with a time relay (39) in every group of output alarm signal circuit.

8, pendulum and inversing bar type town public earthquake automatic alarm according to claim 1 system, it is characterized in that: all be provided with an energising number of times register (17) and integrator conduction time (18) in each pendulum group of this warning system, energising number of times register (17) and integrator conduction time (18) all use " rolling the word formula ".

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