CN112396812B - A pneumatic bridge anti-overweight alarm mechanism and method - Google Patents

Abstract

The invention discloses a pneumatic type bridge overweight prevention alarm mechanism and a method, wherein the mechanism comprises a mounting groove dug in the ground, a buffer air bag is arranged in the mounting groove, a bearing plate matched with the mounting groove is fixedly arranged on the upper surface of the buffer air bag, a warning table is fixedly connected to one side of the ground positioned at the front end of the mounting groove, a warning lamp is fixedly arranged at the upper end of the warning table, and a cavity is vertically arranged in the warning table. According to the invention, the gas discharge amount in the buffer air bag is utilized to transmit when the load-carrying vehicle presses down the load-carrying plate, and the warning light is utilized to monitor and remind the weight of the large load-carrying vehicle one by one, so that the damage of the overweight vehicle on the bridge can be effectively prevented, and the bridge structure is protected; and the power source of the warning lamp is generated by the pressure effect of the vehicle weight on the bearing plate and the buffer air bag, a power system does not need to be installed, the energy is saved, manual work and an intelligent system are not needed for control, the maintenance cost is lower, the influence on traffic is smaller, and the use is convenient.

Description

A pneumatic bridge anti-overweight alarm mechanism and method

This application is a divisional application with an application date of August 30, 2019 and an invention title of CN201910817424.X, a pneumatic bridge anti-overweight alarm mechanism.

technical field

The invention relates to the technical field of bridge safety, in particular to a pneumatic bridge anti-overweight alarm mechanism and method.

Background technique

With the development of my country's transportation industry, the health and maintenance of bridges have been paid more and more attention by people. Each bridge is designed to limit the maximum weight of a single vehicle on the bridge, and the overweight passenger vehicle on the bridge will cause damage to the bridge, which is the primary problem affecting the health and service life of the bridge. It will lead to bridge collapse, resulting in heavy economic losses and casualties.

Due to the high installation and maintenance costs of the existing bridge safety monitoring system, most bridges do not have an anti-overweight detection mechanism, which also makes it difficult for many heavy-duty vehicles to determine whether they are overweight when they are on the bridge, which is easy to cause damage to the bridge, resulting in Security risks.

To this end, we propose a pneumatic bridge anti-overweight alarm mechanism and method.

SUMMARY OF THE INVENTION

The purpose of the present invention is to propose a pneumatic bridge anti-overweight alarm mechanism and method in order to solve the problems raised in the background art.

In order to achieve the above purpose, the present invention adopts the following technical scheme: a pneumatic bridge anti-overweight alarm mechanism and method, comprising an installation groove dug on the ground, a buffer air bag is installed in the installation groove, and the upper surface of the buffer air bag is A load-bearing plate adapted to the installation slot is fixedly arranged, a warning platform is fixed on the ground side at the front end of the installation slot, a warning light is fixedly installed on the upper end of the warning platform, and the warning light is connected with a self-power supply mechanism. A cavity is vertically opened inside the warning platform, a vent pipe is connected between the bottom of the cavity and the buffer airbag, a piston top block is sealed and slidably connected on the inner wall of the cavity, and the piston top block is fixedly connected with the bottom of the cavity. There is a first spring, the upper end of the cavity is also provided with a vent hole for use with the piston top block, the upper end side wall of the cavity is also provided with a groove, and the inner wall of the groove is installed with an electrical connection with the warning light. A key switch and a plurality of second springs, one end of the second spring is fixed with a wedge-shaped block, the flat end of the wedge-shaped block just contacts the key switch, and the beveled end of the wedge-shaped block just extends out of the groove at the position. inside the cavity.

In the above-mentioned pneumatic bridge anti-overweight alarm mechanism, the self-power supply mechanism includes piezoelectric ceramics arranged inside the buffer airbag, and the piezoelectric ceramics are electrically connected in series with the warning light and the key switch.

In the above-mentioned pneumatic bridge anti-overweight alarm mechanism, the self-power supply mechanism includes transmission rods fixed vertically at the bottoms of the front and rear ends of the load-bearing plate, and a set of mutually meshing groups are rotatably connected to the front and rear side walls of the installation slot. The first gear and the second gear, wherein the number of teeth of the first gear is greater than that of the second gear, a first rack meshing with the first gear is fixed on the side wall of each transmission rod, and the installation groove A deep groove is correspondingly opened at the front and rear ends of the bottom of the bottom, and a mounting plate is horizontally fixed to the notch of each deep groove. The upper end side wall of the movable rod is also fixed with a second rack that meshes with the second gear, the inner side wall of each of the deep grooves is fixed with a helical coil, and the lower end side of each of the movable rods is fixed. A plurality of magnets are fixedly connected to the wall, and the movable rod and the magnet are correspondingly inserted in the interior of the helical coil.

In the above-mentioned pneumatic bridge anti-overweight alarm mechanism, a speed bump for use with the load-bearing plate is also fixedly installed on the ground at the rear end of the installation groove.

Compared with the existing technology, the advantages of the pneumatic bridge anti-overweight alarm mechanism are:

1. The transmission is carried out by using the gas discharge in the buffer airbag when the heavy-duty vehicle presses the load-bearing plate, and the warning light is used to monitor and remind the weight of the large heavy-duty vehicle one by one, which can effectively prevent the overweight vehicle from forcing the bridge to cause damage to the bridge. protect bridge structures;

2. The power source of the warning light comes from the pressure effect of the weight of the vehicle on the load-bearing plate and the buffer air bag, no need to install the power system, saving energy and lower maintenance costs;

3. The reset process of the load-bearing plate, the buffer airbag and the warning light is carried out spontaneously, without manual and intelligent system control, and subsequent heavy-duty vehicles can try to pass through the load-bearing plate without waiting for the buffer airbag and the load-bearing plate to be completely reset, which has less impact on traffic. Easy to use.

Description of drawings

1 is a schematic structural diagram of a pneumatic bridge anti-overweight alarm mechanism and method proposed by the present invention;

Fig. 2 is the structural enlargement schematic diagram of A part among Fig. 1;

3 is a structural side view of a pneumatic bridge anti-overweight alarm mechanism and method proposed by the present invention;

4 is a schematic structural diagram of Embodiment 2 of a pneumatic bridge anti-overweight alarm mechanism and method proposed by the present invention;

FIG. 5 is an enlarged schematic view of the structure of part B in FIG. 4 .

In the picture: 1 installation slot, 2 buffer air bag, 3 load-bearing plate, 4 warning table, 5 warning light, 6 cavity, 7 ventilation pipe, 8 piston top block, 9 first spring, 10 air outlet, 11 groove, 12 Key switch, 13 second spring, 14 wedge block, 15 piezoelectric ceramic, 16 transmission rod, 17 first gear, 18 second gear, 19 first rack, 20 deep groove, 21 mounting plate, 22 movable rod, 23 The second rack, 24 helical coils, 25 magnets, 26 deceleration belts.

Detailed ways

The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

Example 1

1-3, a pneumatic bridge anti-overweight alarm mechanism and method, including an installation groove 1 dug on the ground, the installation groove 1 is installed with a buffer air bag 2, the upper surface of the buffer air bag 2 is fixed with the installation groove 1 The adapted load-bearing plate 3 is located on the ground side of the front end of the installation slot 1, and a warning table 4 is fixedly connected. The upper end of the warning table 4 is fixedly installed with a warning light 5, and the warning light 5 is connected with a self-power supply mechanism, and the self-power supply mechanism includes a buffer air bag. 2 piezoelectric ceramics 15 arranged inside, the piezoelectric ceramics 15 are electrically connected in series with the warning light 5 and the key switch 12;

A cavity 6 is vertically opened inside the warning platform 4 , a vent pipe 7 is connected between the bottom of the cavity 6 and the buffer airbag 2 , a piston top block 8 is sealed and slidably connected to the inner wall of the cavity 6 , and the piston top block 8 is connected to the inside of the cavity 6 . A first spring 9 is fixedly connected between the bottoms, the upper end of the cavity 6 is also provided with an air outlet 10 for use with the piston top block 8, the upper end side wall of the cavity 6 is also provided with a groove 11, and the inner wall of the groove 11 is installed with The key switch 12 electrically connected to the warning light 5 and a plurality of second springs 13, one end of the second spring 13 is fixedly fixed with a wedge block 14, the flat end of the wedge block 14 just contacts the key switch 12, and the inclined end of the wedge block 14 Exactly all the protruding grooves 11 are located in the cavity 6; the ground at the rear end of the installation groove 1 is also fixedly installed with a deceleration belt 26 for use with the load-bearing plate 3;

When the present invention is used, the device is built on both ends of the bridge, so that one end of the warning platform 4 is close to the entrance of the bridge, and signs are set on both sides of the speed bump 26 to remind the large-scale heavy-duty vehicles to pass through the load-bearing plate 3 one by one, and the heavy-duty vehicles are decelerating. After decelerating at the belt 26, drive onto the load-bearing plate 3 and press down on the buffer air bag 2, the gas in the buffer air bag 2 will be pressed into the cavity 6 by the vent pipe 7, thereby pushing the piston top block 8 to elongate the first spring 9 and slide upward; When the weight of the truck exceeds the limit weight of the bridge, the buffer air bag 2 will be severely compressed, and the gas in the air bag will be pressed into the cavity 6 by a large amount, thereby pushing the piston top block 8 to slide upward and the wedge block 14 towards the groove. 11, so that the flat end of the wedge-shaped block 14 presses the key switch 12; when the airbag 3 is pressed down, the piezoelectric ceramic 22 is subjected to pressure to generate a piezoelectric effect to form a current, and the circuit is connected after the key switch 12 is pressed, and the upper end of the warning stand 4 is connected. The warning light 5 can be turned on to issue an alarm, thereby prompting the overweight vehicle to turn around and away from the bridge; after the overweight vehicle drives away from the bridge and falls off the load-bearing plate 3, the restoring force of the first spring 11 will pull the piston top block 8 back down, thereby Press the gas back into the buffer air bag 2, the reset action of the second spring 13 will push the wedge block 14 out of the groove 11 again, so that the button switch 12 will no longer be pressed, and the power supply circuit of the warning light 5 will automatically be disconnected. Closed; the subsequent heavy-duty vehicles can try to pass through the load-bearing plate 3 without waiting for the buffer airbag 2 and the load-bearing plate 3 to be completely reset, and the impact on the traffic is small.

Embodiment 2

4-5, while retaining other structures of the first embodiment, the self-power supply mechanism can also adopt a transmission rod 16 welded vertically at the bottoms of the front and rear ends of the load-bearing plate 3. The front and rear of the installation slot 1 A set of mutually meshing first gears 17 and second gears 18 are rotatably connected to the side walls, wherein the number of teeth of the first gear 17 is larger than that of the second gear 18, and each side wall of the transmission rod 16 is fixed with a The first rack 19 meshing with the first gear 17, the front and rear ends of the bottom of the mounting groove 1 are respectively provided with a deep groove 20, and the notch of each deep groove 20 is horizontally fixed with a mounting plate 21. A movable rod 22 is slidably connected through the center of each said mounting plate 21, and the upper end side wall of each said movable rod 22 is also fixedly connected with a second rack 23 engaged with the second gear 18, A helical coil 24 is fixed on the inner side wall of each of the deep grooves 20 , a plurality of magnets 25 are fixedly connected to the lower end side wall of each of the movable rods 22 , and the movable rods 22 and the magnets 25 are inserted correspondingly. set inside the helical coil 24;

When the vehicle passes the load-bearing plate 3, whether it is overweight or not, the load-bearing plate 3 will be pressed down by a certain distance, and the height of the load-bearing plate 3 and the buffer air bag 2 will continuously change, so that the transmission rod 16 will also move up and down accordingly, and the transmission rod 16 will move up and down. When moving, the movable rod 22 can be driven to move up and down through the transmission of the first rack 19, the first gear 17, the second gear 18 and the second rack 23, so that the magnet 25 on the side wall of the lower end of the movable rod 22 is in the helical coil 24. The magnet 25 continuously moves up and down, and the magnet 25 cuts the magnetic field line to generate an induced current in the helical coil 24; since the number of teeth of the first gear 17 is greater than the number of teeth 18 of the second gear, the movable rod 22 can be moved by the transmission rod 16. The larger the distance, the wider the magnet 25 can cut the magnetic field lines in the helical coil 24, so that the efficiency of generating current is higher; a battery can be installed inside the warning stand 4, and the two ends of the helical coil 24 can be electrically connected to the battery. At the same time, the battery and the warning light 5 are also electrically connected, so that the induced current generated by the spiral coil 24 can be stored in the battery to provide the warning light 5 for use, and the energy utilization rate is higher.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection of the present invention. within the range.

Claims (1)

1. The utility model provides a pneumatic type bridge overweight prevention alarm mechanism, includes digs mounting groove (1) established on ground, its characterized in that, install buffering gasbag (2) in mounting groove (1), fixed surface is equipped with bearing plate (3) with mounting groove (1) adaptation on buffering gasbag (2), and the ground one side rigid coupling that is located mounting groove (1) front end has warning platform (4), warning platform (4) upper end fixed mounting has warning light (5), and warning light (5) are connected with self-power mechanism, warning platform (4) inside vertical cavity (6) of having seted up, be connected with breather pipe (7) between cavity (6) bottom and buffering gasbag (2), sealed sliding connection has piston kicking block (8) on the inner wall of cavity (6), fixedly connected with first spring (9) between piston kicking block (8) and the bottom in cavity (6), the air outlet (10) that cooperation piston kicking block (8) used have still been seted up to cavity (6) upper end, the upper end lateral wall of cavity (6) has still been seted up fluted (11), install key switch (12) and a plurality of second spring (13) with warning light (5) electric connection on recess (11) inner wall, the common rigid coupling of second spring (13) one end has wedge (14), the plane end of wedge (14) just contacts with key switch (12), the inclined plane end of wedge (14) all stretches out recess (11) just and is located cavity (6), self-power supply mechanism includes piezoceramics (15) that buffer airbag (2) inside set up, piezoceramics (15) and warning light (5) and key switch (12) are with the mode electric connection of establishing ties, self-power supply mechanism includes drive rod (16) that the equal vertical rigid coupling in both ends bottom had around bearing plate (3), all rotate on the lateral wall around mounting groove (1) and be connected with a set of intermeshing's first gear (17) and second gear (18), wherein the number of teeth of first gear (17) is greater than second gear (18), every equal rigid coupling has first rack (19) with first gear (17) meshing on transfer line (16) lateral wall, both ends are all corresponding around the bottom of mounting groove (1) and have been seted up a deep trouth (20), every the equal horizontal rigid coupling in notch of deep trouth (20) has a mounting panel (21), every mounting panel (21) center all runs through sliding connection has a movable rod (22), every equal rigid coupling has second rack (23) with second gear (18) meshing on the upper end lateral wall of movable rod (22), every all be fixed with spiral coil (24) on the inside wall of deep trouth (20), every equal rigid coupling has polylith magnet (25) on the lower extreme lateral wall of movable rod (22), the movable rod (22) and the magnet (25) are correspondingly inserted into the spiral coil (24), and a deceleration strip (26) matched with the bearing plate (3) for use is fixedly arranged on the ground at the rear end of the mounting groove (1);

when the device is used, the device is built at two ends of a bridge, one end of the warning platform (4) is close to an inlet of the bridge, marks are arranged on two sides of the deceleration strip (26) to prompt that a large-sized load-carrying vehicle passes through the bearing plate (3) one by one, the load-carrying vehicle drives the bearing plate (3) to press the buffer air bag (2) down after decelerating at the deceleration strip (26), and air in the buffer air bag (2) can be pressed into the cavity (6) through the vent pipe (7), so that the piston top block (8) is pushed to elongate the first spring (9) to slide upwards; when the weight of the load-carrying vehicle exceeds the limit weight of the bridge, the buffering air bag (2) is seriously compressed, and a large amount of air in the air bag is pressed into the cavity (6), so that the piston top block (8) is pushed to slide upwards all the time, the wedge block (14) is abutted against the groove (11), and the plane end of the wedge block (14) presses the key switch (12); when the air bag (3) is pressed down, the piezoelectric ceramic (22) is pressed to generate a piezoelectric effect to form current, the key switch (12) is pressed and then is connected with the circuit, and the warning lamp (5) at the upper end of the warning table (4) can be lightened to give an alarm, so that the overweight vehicle is prompted to turn around and be away from the bridge; after the overweight vehicle is far away from the bridge and drives down the bearing plate (3), the piston jacking block (8) is pulled back downwards by the reset acting force of the first spring (11), so that the gas is pressed back into the buffer air bag (2), the wedge block (14) is pushed out of the groove (11) again by the reset action of the second spring (13), the key switch (12) is not pressed any more, and the power supply circuit of the warning lamp (5) is automatically closed after being disconnected; the subsequent load-carrying vehicle can try to pass through the bearing plate (3) without waiting for the complete reset of the buffer air bag (2) and the bearing plate (3), and the influence on traffic is small.

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