CN114875825A

CN114875825A - Overweight early warning device is used to bridge

Info

Publication number: CN114875825A
Application number: CN202210694618.7A
Authority: CN
Inventors: 张华云; 张�浩; 陆文明
Original assignee: Guangdong High Science And Technology Investment Co ltd
Current assignee: Guangdong High Science And Technology Investment Co ltd
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2022-08-09
Anticipated expiration: 2042-06-20
Also published as: CN114875825B

Abstract

The invention relates to an overweight early warning device, in particular to an overweight early warning device for a bridge. The invention provides an overweight early warning device for a bridge, which can intercept overweight vehicles so as to avoid the damage of the overweight vehicles to the bridge. The invention provides an overweight early warning device for a bridge, which comprises: the front and back of the right side of the top of the bottom plate are symmetrically provided with a group of fixed rods, and the front and back of the left side of the top of the bottom plate are symmetrically provided with a group of fixed rods; the sliding plate is arranged between the fixed rods in a sliding mode. Block through the sliding plate extrusion and block piece upwards rotation for block piece and cardboard and break away from, fifth elastic component resumes natural state thereupon and drives the cardboard and remove and block the piece and block, thereby can make and block that to block the piece and block the vehicle and move ahead, realized can carrying out the function of intercepting to overweight vehicle, thereby avoid overweight vehicle to cause the damage to the bridge.

Description

Overweight early warning device is used to bridge

Technical Field

The invention relates to an overweight early warning device, in particular to an overweight early warning device for a bridge.

Background

With the development of the transportation industry in China, the health maintenance of bridges is increasingly concerned by people, the health monitoring of large-span bridges to ensure the safety of bridge structures and realize early warning becomes the first problem, the overweight phenomenon of vehicles causes the damage of facilities such as road bridges and the like, thereby deteriorating the road service level and the driving safety condition, bringing about expensive repair cost and even the collapse of the structures, causing huge economic loss to the country, and meanwhile, the traffic accidents caused by overweight transportation are increasingly threatening the life safety of people.

Patent No. CN216283881U discloses a vehicle overload detection device, which comprises a sensor system, a data acquisition system, a data transmission system, a data processing and control system and a safety evaluation and early warning system, wherein the sensor system comprises a visual sensor and a detection target, the sensor system is connected with the data acquisition system, the data acquisition system is connected with the data processing and control system through the data transmission system, the data processing and control system is connected with the safety evaluation and early warning system, the safety evaluation and early warning system is connected with a high-speed camera, the data acquisition system is used for converting a model signal of acquired data into a digital signal, the data processing and control system is used for filtering and extracting the data and obtaining a bridge deformation value according to DIC algorithm processing, although the above patent can detect overweight vehicles, the above patent does not have the function of intercepting the overweight vehicles, thereby causing the overweight vehicle to drive on the bridge and easily causing damage to the bridge.

Therefore, it is necessary to provide an overweight pre-warning device for bridge, which can intercept the overweight vehicles and prevent the overweight vehicles from damaging the bridge, to solve the above-mentioned problems.

Disclosure of Invention

In order to overcome the defect that the above patent does not have the function of intercepting the overweight vehicle, thereby leading the overweight vehicle to drive to the bridge, easily bring the damage to the bridge, the technical problem: the overweight early warning device for the bridge can intercept overweight vehicles so as to avoid the overweight vehicles from damaging the bridge.

The invention is realized by the following technical approaches: an overweight early warning device for a bridge, comprising: the front and back of the right side of the top of the bottom plate are symmetrically provided with a group of fixed rods, the group of fixed rods is nine, the front and back of the left side of the top of the bottom plate are symmetrically provided with a group of fixed rods, and the group of fixed rods is three; the sliding plates are arranged between the fixed rods in a sliding manner; the bottom of the sliding plate and the top of the bottom plate are connected with a first elastic piece, and the first elastic piece is sleeved on the fixed rod; the front side and the rear side of the top of the sliding plate are fixedly connected with guardrails, the number of the guardrails on the rear side is two, and the number of the guardrails on the front side is one; the left side and the right side of the bottom plate are symmetrically and fixedly connected with the first slopes in a front-back manner; the middle position of the left side of the top of the bottom plate and the bottom of the sliding plate are uniformly connected with the second elastic part at intervals; the middle position of the front side of the top of the bottom plate is fixedly connected with a scale plate; the contact plate is arranged in the scale plate in a sliding mode and is in contact with the top of the contact plate; the front side of the contact plate is fixedly connected with a pointer; the third elastic piece is connected between the bottom of the contact plate and the top of the bottom plate; the display screen is fixedly connected to the top of the scale plate; the left part of the bottom plate is provided with a blocking mechanism for blocking the running of the vehicle; and the front side of the bottom plate is provided with an alarm mechanism for giving out an alarm.

Preferably, the blocking mechanism comprises: the left side of the upper part of the bottom plate is rotatably provided with a blocking part, and the blocking part is clamped between the two first slopes on the left side; the fourth elastic piece is symmetrically connected between the upper part of the blocking piece and the top of the bottom plate in front and back; the clamping plate is arranged on the left side of the sliding plate in a sliding mode and is in contact with the blocking piece; and fifth elastic pieces are uniformly connected between the right side of the clamping plate and the sliding plate at intervals.

Preferably, the alarm mechanism includes: the front side of the bottom plate is fixedly connected with the alarm through two first screws; the fixing plate is fixedly connected with the rear side of the alarm; the button is fixedly connected to the top of the fixed plate, and the sliding plate moves downwards and can be contacted with the button.

Preferably, the vehicle further comprises a height limiting mechanism for limiting the height of the vehicle, and the height limiting mechanism comprises: the fixing frame is fixedly connected between the front side and the rear side of the right part of the bottom plate and is positioned on the right side of the alarm; the upper part of the fixing frame is fixedly connected with a sign; solar panel, sign top rigid coupling have solar panel, and solar panel passes through the electric wire to be connected with the sign.

Preferably, the vehicle further comprises a recording mechanism for recording the vehicle in violation, and the recording mechanism comprises: the front side of the left part of the bottom plate is fixedly connected with a fixed cylinder which is positioned on the left side of the alarm; the sliding rod is arranged in the fixed cylinder in a sliding manner; the upper part of the sliding rod is rotatably provided with a rotating rod; the rear part of the rotating rod is fixedly connected with a recording camera; the rear part of the rotating rod is fixedly connected with a photographing camera which is positioned at the rear side of the recording camera; the lower part of the sliding rod is provided with a clamping block in a sliding manner, and the clamping block is clamped into the upper part of the fixed cylinder; and a sixth elastic piece is connected between the clamping block and the sliding rod.

Preferably, the vehicle further includes a release mechanism for releasing the illegal vehicle, the release mechanism including: the left part of the guardrail on the rear right side is rotatably provided with the interception plate which is contacted with the guardrail on the rear left side; the rear side of the bottom plate is fixedly connected with a second slope which is positioned at the rear side of the interception plate; the handle is fixedly connected with the left side behind the intercepting plate.

Preferably, the vehicle further includes a deceleration mechanism for decelerating the vehicle, the deceleration mechanism including: the outer sides of the two first slopes on the right side are fixedly connected with mounting rods; the speed reduction plate is uniformly arranged between the two mounting rods at intervals and fixedly connected with the speed reduction plate through two groups of second screws, and each group of second screws is two.

Preferably, the sixth elastic member is a compression spring.

As can be seen from the above description of the structure of the present invention, the design starting point, concept and advantages of the present invention are: 1. block through the sliding plate extrusion and block piece upwards rotation for block piece and cardboard and break away from, fifth elastic component resumes natural state thereupon and drives the cardboard and remove and block the piece and block, thereby can make and block that to block the piece and block the vehicle and move ahead, realized can carrying out the function of intercepting to overweight vehicle, thereby avoid overweight vehicle to cause the damage to the bridge.

2. The indication board is marked with a prompt of limited height of five meters, so that the driving height can be prompted to be not more than five meters.

3. Through recording the camera and taking a picture the camera, can conveniently record and shoot the vehicle in violation of rules and regulations to be convenient for the later stage to punish relevant personnel.

4. The intercepting plate is driven to rotate by rotating the handle to open the outlet, so that the vehicle can be driven out through the second slope, and the overweight vehicle can be conveniently released.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

FIG. 2 is a schematic view of a first partial body structure according to the present invention.

Fig. 3 is a schematic diagram of a second partial body structure according to the present invention.

FIG. 4 is a schematic view of a first partially assembled body configuration of the barrier mechanism of the present invention.

Fig. 5 is a partial perspective sectional structural schematic diagram of the blocking mechanism of the present invention.

FIG. 6 is a schematic view of a second partial body structure of the barrier mechanism of the present invention.

Fig. 7 is a perspective view of a third portion of the blocking mechanism of the present invention.

Fig. 8 is a schematic view of a first partial body structure of the alarm mechanism of the present invention.

Fig. 9 is a schematic view of a second partial body structure of the alarm mechanism of the present invention.

Fig. 10 is a schematic view of a first partially assembled body structure of the height limiting mechanism of the present invention.

Fig. 11 is a schematic view of a second partial body structure of the height limiting mechanism of the present invention.

Fig. 12 is a partial perspective view of a recording mechanism according to the present invention.

Fig. 13 is a partial perspective sectional structural schematic view of a recording mechanism of the present invention.

Fig. 14 is a schematic view of a first partially assembled body structure of the release mechanism of the present invention.

Fig. 15 is a schematic view of a second partial body structure of the release mechanism of the present invention.

Fig. 16 is a schematic view of a first partial structure of the speed reducing mechanism of the present invention.

Fig. 17 is a second partial structure diagram of the speed reducing mechanism of the present invention.

Description of reference numerals: 1_ bottom plate, 2_ fixed bar, 3_ sliding plate, 4_ first elastic member, 5_ guard rail, 6_ first slope, 7_ second elastic member, 8_ scale plate, 9_ contact plate, 91_ pointer, 10_ third elastic member, 11_ display screen, 12_ blocking mechanism, 1201_ blocking member, 1202_ fourth elastic member, 1203_ card plate, 1204_ fifth elastic member, 13_ alarm mechanism, 1301_ alarm, 1302_ first screw, 1303_ fixed plate, 1304_ button, 14_ height limiting mechanism, 1401_ fixed frame, 1402_ indication plate, 1403_ solar panel, 15_ recording mechanism, 1501_ fixed cylinder, 1502_ sliding bar, 1503_ rotating bar, 1504_ recording camera, 1505_ photographing camera, 1506_ button, 1507_ sixth elastic member, 16_ playback mechanism, 1601_ interception plate, 1602_ second slope, 1603_ handle, 17_ playback mechanism, 1701_ mounting bar, 1702_ reduction plate, 1703_ second screw.

Detailed Description

The following description is only a preferred embodiment of the present invention, and does not limit the scope of the present invention.

Example 1

An overweight early warning device for a bridge is disclosed, and shown in figures 1-9, comprising a bottom plate 1, fixed rods 2, sliding plates 3, first elastic pieces 4, guardrails 5, a first slope 6, second elastic pieces 7, a scale plate 8, a contact plate 9, a pointer 91, third elastic pieces 10, a display screen 11, a blocking mechanism 12 and an alarm mechanism 13, wherein a group of fixed rods 2 is symmetrically arranged at the front and back of the right side of the top of the bottom plate 1, the group of fixed rods 2 is nine, a group of fixed rods 2 is symmetrically arranged at the front and back of the left side of the top of the bottom plate 1, the group of fixed rods 2 is three, the sliding plates 3 are slidably arranged among the fixed rods 2, the bottom of the sliding plates 3 and the top of the bottom plate 1 are connected with the first elastic pieces 4, the first elastic pieces 4 are sleeved on the fixed rods 2, the guardrails 5 are arranged at the front and back sides of the top of the sliding plates 3 in a welding manner, the number of the guardrails 5 at the back side is two, the number of the guardrails 5 at the front side is one, the equal front and back symmetry rigid coupling of the 1 left and right sides of bottom plate has first slope 6, even interval connection has five second elastic component 7 between 1 top left side intermediate position of bottom plate and the 3 bottoms of sliding plate, 1 top front side intermediate position rigid coupling of bottom plate has

scale plate

8, 8 internal sliding type of scale plate are provided with contact plate 9, sliding plate 3 and the contact of contact plate 9 top, 9 front side rigid couplings of contact plate have pointer 91, be connected with third elastic component 10 between 9 bottoms of contact plate and 1 tops of bottom plate, 8 top rigid couplings of scale plate have

display screen

11, 1 left part of bottom plate is provided with

blocking mechanism

12, 1 front side of bottom plate is provided with alarm mechanism 13.

Referring to fig. 1, 4-7, the blocking mechanism 12 includes a blocking member 1201, a fourth elastic member 1202, a blocking plate 1203 and a fifth elastic member 1204, the blocking member 1201 is rotatably disposed on the left side of the upper portion of the bottom plate 1, the blocking member 1201 is clamped between the two first slopes 6 on the left side, the fourth elastic member 1202 is symmetrically connected between the upper portion of the blocking member 1201 and the top of the bottom plate 1 in a front-back direction, the blocking plate 1203 is slidably disposed on the left side of the sliding plate 3, the blocking plate 1203 contacts with the blocking member 1201, and six fifth elastic members 1204 are uniformly connected between the right side of the blocking plate 1203 and the sliding plate 3 at intervals.

Referring to fig. 1, 8 and 9, the alarm mechanism 13 includes an alarm 1301, first screws 1302, a fixing plate 1303 and a button 1304, the alarm 1301 is fixedly connected to the front side of the base plate 1 through the two first screws 1302, the fixing plate 1303 is welded to the rear side of the alarm 1301, the button 1304 is fixedly connected to the top of the fixing plate 1303, and the sliding plate 3 can move downward to contact with the button 1304.

Initially, the fifth elastic member 1204 is in a compressed state, the clamping plate 1203 contacts with the sliding plate 3, when the device is to be used, a worker firstly places the device at the entrance of the bridge, when a vehicle runs onto the sliding plate 3 through the first slope 6 on the right side, the sliding plate 3 is weighted to move downwards, the first elastic member 4 and the second elastic member 7 deform accordingly, the sliding plate 3 moves downwards to drive the contact plate 9 and the pointer 91 to move downwards, the third elastic member 10 is compressed accordingly, the pointer 91 moves downwards to indicate the corresponding scale on the scale plate 8, so that the weight of the vehicle can be displayed on the display screen 11, if the display screen 11 shows that the vehicle is not overweight, the vehicle can normally pass through the device, if the vehicle is overweight, the sliding plate 3 will contact with the button 1304 when moving downwards, so that the alarm 1301 gives an alarm, and meanwhile, the sliding plate 3 moves downwards to contact with the blocking member 1201, the sliding plate 3 presses the blocking member 1201 to rotate upwards, so that the fourth elastic member 1202 is stretched, the blocking member 1201 rotates to separate from the clamping plate 1203, the fifth elastic member 1204 returns to a natural state to drive the clamping plate 1203 to move leftwards, and the blocking member 1201 is blocked, so that the blocking member 1201 can block the vehicle from advancing, so that the worker can register the overweight vehicle, and then the overweight vehicle can go out through the space between the two guardrails 5 at the rear side, when the vehicle is separated from the sliding plate 3, the first elastic member 4 and the second elastic member 7 drive the sliding plate 3 to move upwards and return, so that the sliding plate 3 moves upwards to be out of contact with the button 1304, the alarm 1301 stops giving an alarm, the fourth elastic member 1202 drives the blocking member 1201 to rotate reversely and reset, the blocking member 1201 reversely extrudes the clamping plate 1203 to move rightwards to reset, thereby causing the fifth elastic element 1204 to be compressed again, and at the same time, the third elastic element 10 returns to its original shape to move the contact plate 9 and the pointer 91 upward and reset.

Example 2

On the basis of embodiment 1, as shown in fig. 1, 10 and 11, the portable electronic device further includes a height limiting mechanism 14, wherein the height limiting mechanism 14 includes a fixed frame 1401, a sign 1402 and a solar panel 1403, the fixed frame 1401 is fixedly connected between the front and rear sides of the right portion of the bottom plate 1, the fixed frame 1401 is located on the right side of the alarm 1301, the sign 1402 is fixedly connected to the upper portion of the fixed frame 1401, the solar panel 1403 is fixedly connected to the top of the sign 1402, and the solar panel 1403 is connected to the sign 1402 through a wire.

Sign 1402 goes up the suggestion of the limited high five meters of mark, and then can indicate that the driving height must not exceed five meters, and solar panel 1403 can convert solar radiant energy into the electric energy to can make sign 1402 luminous, be convenient for look over night.

Referring to fig. 1, 12 and 13, the recording mechanism 15 is further included, the recording mechanism 15 includes a fixed cylinder 1501, a sliding rod 1502, a rotating rod 1503, record camera 1504, camera 1505 shoots, fixture block 1506 and sixth

elastic component

1507, 1 left part front side of bottom plate is provided with fixed section of thick bamboo 1501 through the welded mode, fixed section of thick bamboo 1501 is located siren 1301 left side, fixed section of thick bamboo 1501 is internal slidingtype and is provided with slide bar 1502, slide bar 1502 upper portion rotary type is provided with bull stick 1503, bull stick 1503 rear portion rigid coupling has records camera 1504, bull stick 1503 rear portion rigid coupling has camera 1505 of shooing, camera 1505 is located and records camera 1504 rear side of shooing, slide bar 1502 lower part slidingtype is provided with fixture block 1506, fixture block 1506 blocks into fixed section of thick bamboo 1501 upper portion, be connected with sixth elastic component 1507 between fixture block 1506 and the slide bar 1502, sixth elastic component 1507 is compression spring, thereby can drive fixture block 1506 to reset better.

Under the action of the recording camera 1504 and the photographing camera 1505, illegal vehicles can be conveniently recorded and photographed, and punishment on related personnel at the later stage is facilitated, when the recording camera 1504 and the photographing camera 1505 need to be replaced, a worker presses the clamping block 1506, the sixth elastic element 1507 is compressed along with the clamping block 1506, so that the clamping block 1506 is not clamped with the fixed cylinder 1501 any more, the sliding rod 1502 slides downwards under the action of gravity, then the worker can rotate the rotating rod 1503 to replace the recording camera 1504 and the photographing camera 1505, after replacement is completed, the worker reversely rotates the rotating rod 1503 to reset, then the worker moves the sliding rod 1502 upwards, the sliding rod 1502 drives the rotating rod 1503, the recording camera 1504 and the photographing camera 1505 to move upwards to reset the clamping block, and simultaneously after the sliding rod 1502 drives the sixth elastic element 1507 and the photographing camera 1502 to move upwards to a designated position, the sixth elastic element 1507 resets the clamping block 1506 to move outwards to be clamped into the upper part of the fixed cylinder 1501, thereby causing the slide bar 1502 to be re-secured.

Referring to fig. 1, 14 and 15, the vehicle-mounted parking lot further comprises a release mechanism 16, the release mechanism 16 comprises an interception plate 1601, a second slope 1602 and a handle 1603, the interception plate 1601 is rotatably arranged at the left part of the rear right guardrail 5, the interception plate 1601 is in contact with the rear left guardrail 5, the second slope 1602 is fixedly connected to the rear side of the bottom plate 1, the second slope 1602 is located at the rear side of the interception plate 1601, and the handle 1603 is arranged at the rear left side of the interception plate 1601 in a welding manner.

When the overweight vehicle needs to be released, a worker drives the intercepting plate 1601 to rotate to open the outlet by rotating the handle 1603, so that the vehicle can be driven out through the second slope 1602, and then the worker reverses the handle 1603 to drive the intercepting plate 1601 to reverse to close the outlet.

Referring to fig. 1, 16 and 17, the device further includes a decelerating mechanism 17, the decelerating mechanism 17 includes a mounting rod 1701, a decelerating plate 1702 and two second screws 1703, the mounting rods 1701 are arranged on the outer sides of the two first slopes 6 on the right side in a bolt connection manner, the two mounting rods 1701 are fixedly connected with the decelerating plate 1702 through two groups of second screws 1703 at uniform intervals, and each group of second screws 1703 is two.

When the vehicle need drive into this device, need through the slowing down plate 1702 and slow down, when being damaged after the slowing down plate 1702 is used for a long time, the staff can dismantle the slowing down plate 1702 through rotating second screw 1703 to be convenient for change the slowing down plate 1702.

The present application is described in detail above, and the principles and embodiments of the present application are described herein by using specific examples, which are only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. An overweight early warning device for a bridge, comprising:

the fixing device comprises a bottom plate (1), wherein a group of fixing rods (2) are symmetrically arranged on the front and back of the right side of the top of the bottom plate (1), and a group of fixing rods (2) are symmetrically arranged on the front and back of the left side of the top of the bottom plate (1);

the sliding plates (3) are arranged between the fixed rods (2) in a sliding manner;

the bottom of the sliding plate (3) and the top of the bottom plate (1) are connected with a first elastic piece (4), and the first elastic piece (4) is sleeved on the fixed rod (2);

the front side and the rear side of the top of the sliding plate (3) are fixedly connected with guardrails (5), the number of the guardrails (5) on the rear side is two, and the number of the guardrails (5) on the front side is one;

the left side and the right side of the bottom plate (1) are symmetrically fixedly connected with the first slopes (6) in a front-back manner;

the middle position of the left side of the top of the bottom plate (1) and the bottom of the sliding plate (3) are uniformly connected with the second elastic part (7) at intervals;

the middle position of the front side of the top of the bottom plate (1) is fixedly connected with a scale plate (8);

the contact plate (9) is arranged in the scale plate (8) in a sliding mode, and the sliding plate (3) is in contact with the top of the contact plate (9);

the pointer (91) is fixedly connected to the front side of the contact plate (9);

a third elastic piece (10), wherein the third elastic piece (10) is connected between the bottom of the contact plate (9) and the top of the bottom plate (1);

the display screen (11) is fixedly connected to the top of the scale plate (8);

a blocking mechanism (12), wherein the left part of the bottom plate (1) is provided with the blocking mechanism (12) for blocking the vehicle from running;

and the alarm mechanism (13) is arranged on the front side of the bottom plate (1) and used for sending out an alarm (13).

2. An overweight warning device for bridges according to claim 1 wherein the blocking mechanism (12) comprises:

the blocking piece (1201) is rotatably arranged on the left side of the upper part of the bottom plate (1), and the blocking piece (1201) is clamped between the two first slopes (6) on the left side;

the fourth elastic piece (1202) is symmetrically connected between the upper part of the blocking piece (1201) and the top of the bottom plate (1) in a front-back mode;

the clamping plate (1203) is arranged on the left side of the sliding plate (3) in a sliding mode, and the clamping plate (1203) is in contact with the blocking piece (1201);

fifth elastic pieces (1204) are connected between the right side of the clamping plate (1203) and the sliding plate (3) at regular intervals.

3. An overweight warning device for bridges according to claim 2 characterized in that the warning means (13) comprises:

the alarm (1301), the alarm (1301) is fixedly connected to the front side of the bottom plate (1) through two first screws (1302);

a fixing plate (1303), wherein the rear side of the alarm (1301) is fixedly connected with the fixing plate (1303);

button (1304), fixed plate (1303) top rigid coupling has button (1304), and sliding plate (3) can contact with button (1304) down.

4. The overweight warning device for the bridge according to claim 3, further comprising a height limiting mechanism (14) for limiting the height of the vehicle, wherein the height limiting mechanism (14) comprises:

the fixing frame (1401) is fixedly connected between the front side and the rear side of the right part of the bottom plate (1), and the fixing frame (1401) is positioned on the right side of the alarm (1301);

the upper part of the fixed frame (1401) is fixedly connected with the direction board (1402);

solar panel (1403), sign (1402) top rigid coupling has solar panel (1403), and solar panel (1403) passes through the electric wire and is connected with sign (1402).

5. An overweight warning device for bridges according to claim 4 further comprising a recording mechanism (15) for recording the offending vehicle, the recording mechanism (15) comprising:

the alarm device comprises a fixed cylinder (1501), wherein the fixed cylinder (1501) is fixedly connected to the front side of the left part of a bottom plate (1), and the fixed cylinder (1501) is positioned on the left side of the alarm device (1301);

the sliding rod (1502) is arranged in the fixed cylinder (1501) in a sliding mode;

a rotating rod (1503) is rotatably arranged at the upper part of the sliding rod (1502);

the rear part of the rotating rod (1503) is fixedly connected with the recording camera (1504);

the rear part of the rotating rod (1503) is fixedly connected with a photographing camera (1505), and the photographing camera (1505) is positioned at the rear side of the recording camera (1504);

the lower part of the sliding rod (1502) is provided with a clamping block (1506) in a sliding way, and the clamping block (1506) is clamped into the upper part of the fixed cylinder (1501);

and a sixth elastic member (1507) is connected between the latch (1506) and the slide bar (1502).

6. An overweight warning device for bridge according to claim 5 further comprising a release mechanism (16) for releasing the offending vehicle, the release mechanism (16) comprising:

the left part of the guardrail (5) on the rear right side is rotatably provided with the interception plate (1601), and the interception plate (1601) is in contact with the guardrail (5) on the rear left side;

the rear side of the bottom plate (1) is fixedly connected with a second slope (1602), and the second slope (1602) is positioned on the rear side of the interception plate (1601);

a handle (1603) is fixedly connected to the rear left side of the interception plate (1601).

7. The overweight warning device for bridge according to claim 6, further comprising a deceleration mechanism (17) for decelerating the vehicle, wherein the deceleration mechanism (17) comprises:

the mounting rod (1701), the outside of two first slopes (6) on the right side are all fixedly connected with the mounting rod (1701);

the speed reduction plate (1702) is fixedly connected with the two mounting rods (1701) through two groups of second screws (1703) at uniform intervals, and the number of the second screws (1703) in each group is two.

8. An overweight warning device for bridges according to claim 7 wherein the sixth resilient member (1507) is a compression spring.