CN111747260A - Elevator safety property alarm system and use method thereof - Google Patents

Abstract

The invention discloses an elevator safety property alarm system which comprises an elevator shaft, an elevator car and a buffer mechanism, wherein the elevator car is arranged in the elevator shaft, the top end of the elevator car is provided with a standby power supply box and a controller, the side wall of the upper part of the elevator car is provided with an alarm, one side wall of the lower part of the elevator car is provided with an acceleration sensor, and the side wall of the lower part of the elevator car is provided with an inflation air pump; the buffer gear comprises a buffer component arranged at the bottom of the elevator car and a spring buffer arranged at the bottom of the elevator shaft. To quick elevator, the car moves down to the extreme low position, stops suddenly, and the buffer capacity is very big, and this buffering subassembly utilizes curved form spring post to receive the two deformation buffer capacities of compression pretightning force and the pretightning force of buckling, cushions the car, and simple structure can be to a great extent the travelling comfort and the security of improvement car.

Description

Elevator safety property alarm system and use method thereof

Technical Field

The invention belongs to the field of elevator safety protection, and particularly relates to an elevator safety property alarm system and a using method thereof.

Background

Because the number of domestic elevators is rapidly increased in recent years, the failure rate of the elevators is greatly increased, and the number of serious elevator accidents has a trend of remarkably increasing. The safety protection measure of the existing elevator is matched with a traction machine, and the safety protection effect is realized by monitoring, emergency braking and the like on the traction machine. But generally do not have a good protective effect against cable breaks in the elevator traction. Therefore, an elevator safety property alarm system capable of buffering the impact force of elevator descending when the elevator falls down and simultaneously sending alarm information is needed.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide an elevator safety property alarm system which can monitor the fire condition in an elevator and send an alarm signal, and meanwhile, a video monitoring device which is convenient to disassemble is arranged in the elevator, so that the maintenance of the video monitoring device is convenient and the normal use of the elevator is not influenced.

The invention is realized by the following technical scheme: an elevator safety property alarm system comprises an elevator shaft, an elevator car and a buffer mechanism, wherein the elevator car is arranged in the elevator shaft, a standby power supply box and a controller are arranged at the top end of the elevator car, an alarm is mounted on the side wall of the upper part of the elevator car, an acceleration sensor is arranged on one side wall of the lower part of the elevator car, and an inflation air pump is arranged on the side wall of the lower part of the elevator car;

the buffer mechanism comprises a buffer assembly arranged at the bottom of an elevator car and a spring buffer arranged at the bottom of the elevator shaft, the buffer assembly comprises a buffer plate, an annular air bag and an air valve, the air valve comprises a push rod and a valve body, the lower end of the valve body is fixed on the buffer plate, the upper end of the push rod is fixed at the bottom of the elevator car, an overflow hole and an air inlet hole are formed in the side wall of the lower end of the valve body, the air inlet hole of the air valve is connected with a plurality of branch air pipes, the branch air pipes of the air valves are connected in parallel and then connected with a main air pipe, an electric valve is arranged on the main air pipe, and the main air pipe is; the buffer plate is arranged at the bottom of the elevator car; the lower end of the buffer plate is connected with the annular air bag, and the annular air bag is connected with the inflation air pump through a hose.

In the above technical scheme, the alarm is a buzzer.

In the technical scheme, an upper buffer block is arranged on the inner wall of the bottom of the valve body, and a lower buffer block is arranged at the bottom of the push rod.

In the technical scheme, the elevator shaft bottom is provided with a spring buffer, the spring buffer comprises a pressing plate, a guide post, a guide cylinder, a positioning box and a spring post, the guide post is fixed on the lower end face of the pressing plate, a pressure sensor is arranged in the pressing plate, the guide cylinder is fixed at the bottom of an elevator channel, the guide post is inserted into the guide cylinder, a plurality of partition plates are arranged in the positioning box, each partition plate separates the box body into a plurality of positioning grooves, and one spring post is arranged in each positioning groove.

In the technical scheme, the upper part of the pressing plate is provided with the rubber pad.

In the technical scheme, the spring buffer comprises a base, wherein a mounting plate is arranged on the outer side of the base, a first buffer spring is arranged on the inner side of the base through a guide hole, an air hole is formed in the bottom of the guide hole, and a second buffer spring is arranged in the guide hole; a guide rod is arranged above the second buffer spring, a buffer seat is arranged on the guide rod, and a buffer rubber pad is arranged at the top end of the guide rod; the buffer seat comprises a top plate and side plates, a pressure sensor is arranged in the top plate, and the diameter of the outer circle of the base is slightly smaller than that of the inner circle of the side plates.

In the above technical scheme, the mounting plate is higher than the lower bottom surface of the base.

In the technical scheme, the guide rod comprises a rod body, the upper end of the rod body is provided with the buffer block, the buffer rubber pad is in threaded connection with the threaded buffer block, and a plurality of reinforcing ribs are uniformly distributed between the buffer plate and the top plate.

In the technical scheme, the outer surface of the rod body is provided with a chromium coating.

In the technical scheme, when the traction machine stops, the elevator car rapidly falls, the side wall of the elevator car is provided with the acceleration sensor, when the falling speed of the elevator car exceeds the set value of the acceleration sensor, a signal is sent to the controller, the controller controls the operation of the inflating air pump, the air pump is connected with the annular air bag through a hose, the annular air bag is filled with air by the air pump, and the annular air bag is arranged at the bottom end of the elevator car so as to achieve the first-step buffering;

when the elevator car falls to the bottom of the elevator shaft, the pressure sensor embedded in the pressure plate senses that the pressure value exceeds a set value and sends a signal to the controller, and the controller controls the alarm to give an alarm to warn workers that the elevator car falls;

the buffer plate and the bottom of the lift car are impacted under the action of inertia force, the pressure stabilizing air pump always fills air pressure with temperature and pressure into the valve body, the push rod extrudes the inner cavity of the valve body to buffer the lift car, the lift car exhausts air through the overflow hole, the impact force is gradually reduced, the lift car moves downwards relative to the buffer plate under the resistance of the air pressure and the impact force, and then moves upwards until the air pressure is balanced with the gravity of the lift car; when the elevator stops, the electric valve closes the main air pipe, and the air pump is also closed through the main circuit, so that the gas in the main air pipe and the branch air pipe is prevented from flowing back to cause the blockage of the overflow hole.

The invention has the advantages and beneficial effects that: the utility model provides an elevator safety property alarm system, to quick elevator, the car moves down to the extreme low position, stops suddenly, and the buffer power is very big, and this buffering subassembly utilizes pneumatic valve and gasbag to cushion the car, and simple structure can great degree the travelling comfort and the security of improvement car, sends alarm information when the elevator car breaks down the whereabouts simultaneously, notifies the maintainer rescue of coming.

Drawings

FIG. 1 is a schematic structural view of example 2;

FIG. 2 is a schematic structural view of the valve body of the present invention;

FIG. 3 is a schematic view showing the structure of a spring damper according to embodiment 3;

FIG. 4 is a control circuit diagram of the present invention;

FIG. 5 is a main circuit diagram of the inflation pump.

1: elevator car, 2: elevator shaft, 3: air valve, 3-1: push rod, 3-2: valve body, 3-3: upper buffer block, 3-4: overflow hole, 3-5: air intake, 3-6: lower buffer block, 4: buffer plate, 5: annular balloon, 6: controller, 7: power supply box, 8: alarm, 9: platen, 10: spring post, 11: positioning box, 12: separator, 13: guide cylinder, 14: guide post, 15 accelerometer, 16: inflation pump, 17: pressure sensor, 18: base, 19: mounting plate, 20: guide hole, 20-1: air holes, 21: first buffer spring, 22: second buffer spring, 23: guide bar, 23-1: rod body, 23-2: buffer block, 23-3: reinforcing ribs, 23-4: chromium plating layer, 24: buffer seat, 24-1: top plate, 24-2: side plate, 25: and a cushion rubber pad.

For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the present invention is further described below with reference to specific examples.

Example one

The utility model provides an elevator safety property alarm system, includes elevartor shaft 2, elevator car 1 and buffer gear, its characterized in that: the elevator car 1 is arranged in the elevator shaft 2, a standby power box 7 and a controller 6 are arranged at the top end of the elevator car 1, an alarm 8 is mounted on the side wall of the upper part of the elevator car 1, an acceleration sensor is arranged on one side wall of the lower part of the elevator car 1, and an inflation air pump 16 is arranged on the side wall of the lower part of the elevator car 1;

the buffer mechanism comprises a buffer component arranged at the bottom of an elevator car 1 and a spring buffer arranged at the bottom of an elevator shaft 2, the buffer component comprises a buffer plate 4, an annular air bag 5 and an air valve 3, the air valve 3 comprises a push rod 3-1 and a valve body 3-2, the lower end of the valve body 3-2 is fixed on the buffer plate 4, the upper end of the push rod 3-1 is fixed at the bottom of the elevator car, the side wall of the lower end of the valve body 3-2 is provided with an overflow hole 3-4 and an air inlet hole 3-5, the air inlet hole 3-5 of the air valve 3 is connected with a branch air pipe, the air valve 3 is provided with a plurality of air valves, each branch air pipe of each air valve 3 is connected with a main air pipe after being connected in parallel, the main air pipe is provided with; the buffer plate 4 is arranged at the bottom of the elevator car 1; the lower end of the buffer plate 4 is connected with the annular air bag 5, and the annular air bag 5 is connected with the inflation air pump 16 through a hose.

Preferably, the alarm 8 is a buzzer.

Preferably, the inner wall of the bottom of the valve body 3-2 is provided with an upper buffer block 3-3, and the bottom of the push rod 3-1 is provided with a lower buffer block 3-6. An upper buffer block is arranged on the inner wall of the bottom of the valve body, and a lower buffer block is arranged at the bottom of the push rod; go up buffer block and buffer block down can avoid the impact force too big and damage the pneumatic valve.

The working mode is as follows:

when the traction machine stops, the elevator car rapidly falls, the acceleration sensor is arranged on the side wall of the elevator car, when the falling speed of the elevator car exceeds the set value of the acceleration sensor, a signal is sent to the controller, the controller controls the inflation air pump to work, the air pump is connected with the annular air bag through a hose, the annular air bag is filled with air by the air pump, and the annular air bag is installed at the bottom end of the elevator car so as to achieve first-step buffering.

When the elevator car falls to the bottom of the elevator shaft, the pressure sensor embedded in the pressing plate senses that the pressure value exceeds a set value, a signal is sent to the controller, and the controller controls the alarm to give an alarm so as to warn workers that the elevator car falls.

The buffer plate and the bottom of the lift car are impacted under the action of inertia force, the pressure stabilizing air pump always fills air pressure with temperature and pressure into the valve body, the push rod extrudes the inner cavity of the valve body to buffer the lift car, the lift car exhausts air through the overflow hole, the impact force is gradually reduced, the lift car moves downwards relative to the buffer plate under the resistance of the air pressure and the impact force, and then moves upwards until the air pressure is balanced with the gravity of the lift car; when the elevator stops, the electric valve closes the main air pipe, and the air pump is also closed through the main circuit, so that the gas in the main air pipe and the branch air pipe is prevented from flowing back to cause the blockage of the overflow hole.

Referring to fig. 4-5, the acceleration sensor is a high-performance acceleration sensor adopting a 7105A acceleration sensor, and the dynamic range is from +/-50 g to +/-1000 g. The 7105A acceleration sensor is installed by adopting bolts and is of a full-sealing structure, the top of the acceleration sensor is connected with a 10-32 coaxial line connector, the 7105A acceleration sensor adopts an annular shearing piezoelectric ceramic crystal, the frequency response can reach 12kHz, and the working temperature range is from-55 ℃ to 125 ℃.

The controller adopts S7-200 Siemens PLC, the PLC expands the EM231 module, the EM231 module is an analog input module, the function of the EM231 module is to connect the 7105A acceleration sensor (the 7105A acceleration sensor is connected with the input end of the EM231 module), and the analog signal output by the 7105A acceleration sensor is converted into a digital signal and then sent into the PLC.

Referring to the attached drawing 4, a control circuit wiring diagram of the system is shown, wherein Q0.0 of a PLC is connected with the pressure stabilizing air pump, Q0.1 is connected with the electric valve, Q0.2 is connected with the buzzer, and Q0.4 is connected with a contactor KM of the inflating air pump. Further, the pressure stabilizing air pump, the electric valve and the buzzer supply power for 24V DC, the inflation air pump supplies power for 220V AC, the main circuit diagram of the inflation air pump is shown in figure 5, and when the Q0.4 of the PLC controls the KM to be conducted, the main circuit of the inflation air pump starts to work.

Example two

The present embodiment further optimizes the spring damper based on the first embodiment.

Preferably, a spring buffer is arranged at the bottom of the elevator shaft 2, the spring buffer comprises a pressing plate 9, a guide post 14, a guide cylinder 13, a positioning box 11 and a spring post 10, the guide post 14 is fixed on the lower end face of the pressing plate 9, a pressure sensor 17 is arranged in the pressing plate 9, the guide cylinder 13 is fixed at the bottom of an elevator channel, the guide post 14 is inserted into the guide cylinder 13, a plurality of partition plates 12 are arranged in the positioning box 11, each partition plate 12 divides the box body into a plurality of positioning grooves, and one spring post 10 is arranged in each positioning groove. To the express elevator, the car moves down to the lowest position, stops suddenly, and the buffer power is very big, utilizes annular gasbag's buffer power and spring post to receive the compression pretightning force, cushions the car, simple structure, the travelling comfort and the security that can the improvement car to a great extent.

Preferably, a rubber pad is disposed on the upper portion of the pressing plate 9. The rubber pad cushions the impact force of elevator car whereabouts.

EXAMPLE III

The present embodiment is further advantageous in the spring damper device based on the first embodiment.

Preferably, the spring buffer comprises a base 18, a mounting plate 19 is arranged on the outer side of the base 18, a first buffer spring 21 is arranged on the inner side of the base 18 through a guide hole 20, an air hole 20-1 is arranged at the bottom of the guide hole 20, and a second buffer spring 22 is arranged in the guide hole 20; a guide rod 23 is arranged above the second buffer spring 22, a buffer seat 24 is arranged on the guide rod 23, and a buffer rubber pad 25 is arranged at the top end of the guide rod 23; the buffer seat 24 comprises a top plate 24-1 and a side plate 24-2, a pressure sensor 17 is arranged in the top plate 24-1, and the diameter of the outer circle of the base 18 is slightly smaller than that of the inner circle of the side plate 24-2.

Preferably, the mounting plate 19 is higher than the lower bottom surface of the base 18.

Preferably, the guide rod 23 comprises a rod body 23-1, a buffer block 23-2 is arranged at the upper end of the rod body 23-1, the buffer rubber pad 25 is in threaded connection with the thread buffer block 23-2, and a plurality of reinforcing ribs 23-3 are uniformly distributed between the buffer plate 23-24 and the top plate 24-1.

Preferably, the outer surface of the rod body 23-1 is provided with a chromium coating 23-4.

The working mode is as follows:

when elevator car dropped, rubber buffer pad contacted the back with impact force evenly distributed on the buffer board with the railway carriage or compartment bottom, the buffer board drove the buffer seat through the body of rod and strengthening rib and descends, the buffer seat is under the dual guiding effect of guide bar and curb plate, the first buffer spring of vertical whereabouts compression, guide bar bottom compression second buffer spring simultaneously, turn into the potential energy and produce the counter force to the railway carriage or compartment through the kinetic energy of first buffer spring and second buffer spring with the railway carriage or compartment whereabouts, make the railway carriage or compartment stop to drop, air in guide cylinder and the base can be discharged through the clearance between bleeder vent and curb plate and the base. The reinforcing ribs can improve the connection strength of the buffer plate, the buffer seat and the rod body, and avoid the deflection of the rod body caused by the stress of the buffer plate; the chromium coating can improve the hardness and the wear resistance of the rod body, and avoid the condition of abrasion or clamping stagnation of the guide rod after long-term use; the cooperation of base lower extreme and pre-buried hole can improve the atress tilting force intensity of buffer, prevents that the buffer from leading to the fracture phenomenon to appear in the junction of base and mounting panel behind the atress tilting.

Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.

The invention has been described in an illustrative manner, and it is to be understood that any simple variations, modifications or other equivalent changes which can be made by one skilled in the art without departing from the spirit of the invention fall within the scope of the invention.

Claims (10)

1. An elevator safety property alarm system, includes elevartor shaft (2), elevator car (1) and buffer gear, its characterized in that: the elevator car (1) is arranged in the elevator shaft (2), a standby power supply box (7) and a controller (6) are arranged at the top end of the elevator car (1), an alarm (8) is mounted on the side wall of the upper portion of the elevator car (1), an acceleration sensor is arranged on the side wall of the lower portion of the elevator car (1), and an inflation air pump (16) is arranged on the side wall of the lower portion of the elevator car (1);

the buffer mechanism comprises a buffer component arranged at the bottom of an elevator car (1) and a spring buffer arranged at the bottom of an elevator shaft (2), the buffer component comprises a buffer plate (4), an annular air bag (5) and an air valve (3), the air valve (3) comprises a push rod (3-1) and a valve body (3-2), the lower end of the valve body (3-2) is fixed on the buffer plate (4), the upper end of the push rod (3-1) is fixed at the bottom of the elevator car, the side wall of the lower end of the valve body (3-2) is provided with an overflow hole (3-4) and an air inlet hole (3-5), the air inlet hole (3-5) of the air valve (3) is connected with a branch air pipe, the air valve (3) is provided with a plurality of air valves, the branch air pipes of each air valve (3) are connected with a main air pipe after being connected in parallel, the main air pipe is connected with a pressure stabilizing air pump; the buffer plate (4) is arranged at the bottom of the elevator car (1); the lower end of the buffer plate (4) is connected with the annular air bag (5), and the annular air bag (5) is connected with the inflation air pump (16) through a hose.

2. The elevator security property alarm system of claim 1, wherein: the alarm (8) is a buzzer.

3. The elevator security property alarm system of claim 1, wherein: an upper buffer block (3-3) is arranged on the inner wall of the bottom of the valve body (3-2), and a lower buffer block (3-6) is arranged at the bottom of the push rod (3-1).

4. The elevator security property alarm system of claim 1, wherein: elevator shaft (2) bottom is provided with spring buffer, spring buffer includes clamp plate (9), guide post (14), guide cylinder (13), location box (11) and spring post (10), the lower terminal surface at above-mentioned clamp plate (9) is fixed in guide post (14), be provided with pressure sensor (17) in clamp plate (9), the bottom at elevator passageway is fixed in guide cylinder (13), guide post (14) are inserted and are established in guide cylinder (13), a plurality of baffle (12) have in location box (11), and each baffle (12) is separated the box body for a plurality of constant head tank, all is provided with one in every constant head tank spring post (10).

5. The elevator security property alarm system of claim 4, wherein: the upper part of the pressing plate (9) is provided with a rubber pad.

6. The elevator security property alarm system of claim 1, wherein: the spring buffer comprises a base (18), a mounting plate (19) is arranged on the outer side of the base (18), a first buffer spring (21) is arranged on the inner side of the base (18) through a guide hole (20), an air hole (20-1) is formed in the bottom of the guide hole (20), and a second buffer spring (22) is arranged in the guide hole (20); a guide rod (23) is arranged above the second buffer spring (22), a buffer seat (24) is arranged on the guide rod (23), and a buffer rubber pad (25) is arranged at the top end of the guide rod (23); the buffer seat (24) comprises a top plate (24-1) and a side plate (24-2), a pressure sensor (17) is arranged in the top plate (24-1), and the diameter of the outer circle of the base (18) is slightly smaller than that of the inner circle of the side plate (24-2).

7. The elevator security property alarm system of claim 6, wherein: the mounting plate (19) is higher than the lower bottom surface of the base (18).

8. The elevator security property alarm system of claim 6, wherein: the guide rod (23) comprises a rod body (23-1), a buffer block (23-2) is arranged at the upper end of the rod body (23-1), the buffer rubber pad (25) is in threaded connection with the threaded buffer block (23-2), and a plurality of reinforcing ribs (23-3) are uniformly distributed between the buffer plates (23-2) (4) and the top plate (24-1).

9. The elevator security property alarm system of claim 8, wherein: the outer surface of the rod body (23-1) is provided with a chromium coating (23-4).

10. The method of using an elevator safety property alarm system of claim 1, wherein: when the traction machine stops, the elevator car rapidly falls, an acceleration sensor is arranged on the side wall of the elevator car, when the falling speed of the elevator car exceeds a set value of the acceleration sensor, a signal is sent to a controller, the controller controls an inflation air pump to work, the air pump is connected with an annular air bag through a hose, the annular air bag is filled with air by the air pump, and the annular air bag is arranged at the bottom end of the elevator car so as to achieve first-step buffering;

when the elevator car falls to the bottom of the elevator shaft, the pressure sensor embedded in the pressure plate senses that the pressure value exceeds a set value and sends a signal to the controller, and the controller controls the alarm to give an alarm to warn workers that the elevator car falls;

the buffer plate and the bottom of the lift car are impacted under the action of inertia force, the pressure stabilizing air pump always fills air pressure with temperature and pressure into the valve body, the push rod extrudes the inner cavity of the valve body to buffer the lift car, the lift car exhausts air through the overflow hole, the impact force is gradually reduced, the lift car moves downwards relative to the buffer plate under the resistance of the air pressure and the impact force, and then moves upwards until the air pressure is balanced with the gravity of the lift car; when the elevator stops, the electric valve closes the main air pipe, and the air pump is also closed through the main circuit, so that the gas in the main air pipe and the branch air pipe is prevented from flowing back to cause the blockage of the overflow hole.

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