Safety protection device for bridge engineering

Abstract

The utility model relates to the technical field of bridge engineering, and discloses a safety protection device for bridge engineering, which comprises two supports, a safety protection device body and a safety protection device body, the cross beam is fixedly mounted at the end part of the bracket and is parallel to the ground; the mounting shell is fixedly mounted on the side surface, close to the ground, of the cross beam, and the side surface, away from the cross beam, of the mounting shell is open; the height limiting plate is rotationally arranged in the mounting shell, one end of the height limiting plate extends out of the mounting shell, and the height limiting plate and the mounting shell can rotate and move relatively; the buffer part is arranged in the mounting shell and is used for buffering the height limiting plate; and the displacement monitoring piece is arranged in the mounting shell and is used for monitoring the position of the height limiting plate in real time. According to the safety protection device for the bridge engineering, the safety and stability of a bridge structure can be effectively improved, and the risk that an over-high vehicle collides with a height limiting device is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge engineering, in particular to a safety protection device for bridge engineering. Background Art

[0002] In order to ensure the safety of bridge projects, it is necessary to install a height limit safety protection device under the bridge. Its main purpose is to prevent over-height vehicles from passing through the bridge and ensure the safety and stability of the bridge structure. The height limit device can effectively limit the height of the vehicle and prevent potential damage to the bridge structure or traffic accidents caused by the passage of over-height vehicles. Specifically, the setting of the height limit device helps to reduce the safety risks caused by over-height vehicles hitting the bridge, thereby protecting the bridge from damage and extending its service life. At the same time, it is also a traffic safety measure that helps maintain road traffic order and ensure the safety of vehicles and pedestrians.

[0003] In the prior art, the height limit device under the bridge plays a key role in ensuring the safety of the bridge structure, but some drivers still collide with the height limit device during driving. The main reason is that the driver's lack of awareness of the height of the vehicle and its cargo is an important problem. Some drivers may not understand the height of their vehicles well enough, or ignore the height of the cargo when loading the cargo, causing the vehicle to exceed the height limit set by the height limit device when passing the bridge. This inaccurate judgment or neglect of the vehicle height directly increases the risk of collision between the vehicle and the bridge safety height limit device, which will not only cause serious damage to the vehicle itself, but may also cause damage to the height limit safety protection device, and may even pose a potential safety threat to the bridge structure to a certain extent. There are certain disadvantages. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The utility model aims to effectively improve the safety and stability of the bridge structure and reduce the risk of collision between an overheight vehicle and a height limiting device, and proposes a safety protection device for bridge engineering.

[0006] (II) Technical solution

[0007] The technical solution of the utility model to solve the above technical problems is as follows:

[0008] A safety protection device for bridge engineering,

[0009] The bracket has one end disposed on the ground and is located entirely below the bridge, wherein two brackets are provided and are disposed parallel to each other;

[0010] The crossbeam is fixedly mounted on the end of the bracket and is parallel to the ground;

[0011] The mounting shell is fixedly mounted on a side surface of the beam close to the ground, and the side surface away from the beam is open;

[0012] A height limiting plate is rotatably disposed in the mounting shell, and one end of the height limiting plate extends to the outside of the mounting shell, and the height limiting plate and the mounting shell can be relatively rotatably displaced;

[0013] A buffer member is arranged in the installation shell and is used for buffering the height limiting plate;

[0014] A displacement monitoring component is arranged in the installation shell and is used to monitor the position of the height limit plate in real time;

[0015] The alarm component is arranged outside the mounting shell and is used to link the displacement monitoring component to alarm when the height limit plate rotates.

[0016] On the basis of the above technical solution, the present invention can also be improved as follows.

[0017] Furthermore, the support comprises:

[0018] The outer cylinder has one end vertically disposed on the ground, and there are two of them, which are generally disposed parallel to each other;

[0019] An inner rod, one end of which extends into the outer tube and the other end is fixed to the cross beam, and the number and distribution position of the inner rod are adapted to the outer tube; and

[0020] The fastener is arranged on the outer cylinder through and is used to connect the outer cylinder and the inner rod together.

[0021] Furthermore, an inclined support is fixedly installed on the side surface of the outer cylinder, wherein the number of the inclined supports is not less than four and is equally divided into two groups, which are respectively arranged on the two outer cylinders, and a plurality of through holes distributed at equal intervals are processed on the inner rod, and the aperture and shape of the through holes are adapted to the fasteners.

[0022] Furthermore, a round rod parallel to the cross beam is fixedly installed on the inner side of the mounting shell, and a movable sleeve is fixedly installed on one end of the height limiting plate located on the inner side of the mounting shell, and the movable sleeve is rotatably connected to the outer side of the round rod, wherein two torsion springs are arranged on the outside of the round rod, and the two torsion springs are respectively located on both sides of the movable sleeve, one end of the torsion spring is interconnected with the height limiting plate, and the other end of the torsion spring is interconnected with the mounting shell.

[0023] Furthermore, the buffer member includes:

[0024] The abutment plate is fixedly mounted on the surface of the movable sleeve and can be displaced synchronously with the rotation of the movable sleeve;

[0025] A mounting seat fixedly mounted on an inner side wall of the mounting shell; and

[0026] The elastic buffer mechanism is fixedly mounted on the mounting seat, and its buffer end faces the abutting plate.

[0027] Furthermore, the displacement monitoring component includes:

[0028] an infrared emitter fixedly mounted on an inner side wall of the mounting housing; and

[0029] The infrared receiver is fixedly mounted on the inner side wall of the mounting shell, wherein the abutment plate is located between the infrared transmitter and the infrared receiver.

[0030] Furthermore, the alarm component includes:

[0031] A protective shell is fixedly mounted on an outer side wall of the mounting shell;

[0032] A buzzer is fixedly mounted on the inner side of the protective shell; and

[0033] The warning light is fixedly installed on the inner side of the protective shell.

[0034] Furthermore, a plurality of air holes distributed in an equidistant array are processed on the surface of the height limiting plate, and a height limiting indicator sign is fixedly installed on the outside of the installation shell.

[0035] (III) Beneficial effects

[0036] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0037] The utility model is provided with a stable structure composed of a bracket and a crossbeam, and a rotatable height limit plate installed on the crossbeam. The device can effectively limit super-high vehicles from passing through the bridge, thereby protecting the bridge structure from potential damage. By arranging a buffer part in the installation shell, when the super-high vehicle collides with the height limit plate, the buffer part can effectively absorb the collision impact and reduce the degree of damage to the vehicle and the device. The device is integrated with a displacement monitoring part and an alarm component, which can monitor the position change of the height limit plate in real time. Once an super-high vehicle causes the height limit plate to rotate and displace, the alarm component will immediately trigger an alarm to remind the driver and surrounding personnel to pay attention and take safety measures in time to avoid causing damage to the bridge and extend its service life. The technical problems of safety protection devices for bridge engineering in the prior art are effectively solved, thereby effectively improving the safety of bridge engineering, reducing the risk of collision between super-high vehicles and height limit devices, and providing effective guarantee technical effects for traffic safety and bridge protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic diagram of the overall connection structure of the utility model;

[0039] Figure 2 For this utility model Figure 1 Enlarged view of point A in the middle;

[0040] Figure 3 For this utility model Figure 1 Enlarged view of point B in the middle;

[0041] Figure 4 This is a schematic diagram of the connection structure between the partial installation shell and the displacement monitoring component of the utility model;

[0042] Figure 5 It is a schematic diagram of the connection structure between the partial installation shell and the buffer member of the utility model.

[0043] In the figure: 1. bracket; 101. outer tube; 102. inner rod; 103. fastener; 2. crossbeam; 3. mounting shell; 4. height limit plate; 5. buffer; 51. movable plate; 52. mounting seat; 53. elastic buffer mechanism; 6. displacement monitoring component; 61. infrared transmitter; 62. infrared receiver; 7. alarm component; 71. protective shell; 72. buzzer; 73. warning light; 8. oblique support; 12. through hole; 14. round rod; 15. movable sleeve; 16. torsion spring; 17. air hole; 18. height limit sign. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0045] Combination Figure 1-Figure 5 As shown, the utility model is a safety protection device for bridge engineering.

[0046] A bracket 1, one end of which is disposed on the ground and the whole is located below the bridge, wherein two brackets are provided and are arranged parallel to each other;

[0047] The crossbeam 2 is fixedly mounted on the end of the bracket 1 and is arranged parallel to the ground;

[0048] The mounting shell 3 is fixedly mounted on a side surface of the beam 2 close to the ground, and the side surface away from the beam 2 is open;

[0049] The height limiting plate 4 is rotatably disposed in the mounting shell 3, and one end of the height limiting plate 4 extends to the outside of the mounting shell 3, and the height limiting plate 4 and the mounting shell 3 can be relatively rotatably displaced;

[0050] A buffer member 5 is disposed in the mounting shell 3 and is used to buffer the height limiting plate 4;

[0051] The displacement monitoring member 6 is arranged in the mounting shell 3 and is used to monitor the position of the height limiting plate 4 in real time;

[0052] The alarm component 7 is arranged outside the mounting shell 3 and is used to link the displacement monitoring component 6 to give an alarm when the height limiting plate 4 rotates.

[0053] The bracket 1 can be connected to the cement ground under the bridge by fastening bolts, or it can be fixed by pre-embedded method. The specific fixing method can be flexibly rotated according to actual conditions, and there is no special substantial requirement. The bracket 1 is firmly set on the ground, located under the bridge, to form a supporting structure. The beam 2 is fixedly installed at the end of the bracket 1, parallel to the ground, providing the main framework of the device. The mounting shell 3 is fixedly installed on the side surface of the beam 2 close to the ground, and the side surface away from the beam is open to facilitate the rotation and displacement of the height limit plate 4. The height limit plate 4 is rotatably set inside the mounting shell 3, and one end of it extends to the outside of the mounting shell to limit the passage of overheight vehicles. When the overheight vehicle attempts to pass through the bridge and contacts the height limit plate, the height limit plate will rotate and displace. During the rotation of the height limit plate 4, the mounting shell 3 The buffer 5 plays a key role. The buffer can absorb the impact force of the collision between the height limit plate and the super-height vehicle, reducing damage to the vehicle and the device. This buffer design helps to protect the bridge structure and the height limit device itself, while reducing potential damage to the vehicle. At the same time, the displacement monitoring component 6 in the installation shell 3 monitors the position change of the height limit plate 4 in real time. Once the height limit plate 4 undergoes rotational displacement, the displacement monitoring component 6 will immediately detect this change and transmit the signal to the alarm component 7. The alarm component 7 is arranged outside the installation shell 3. It works in conjunction with the displacement monitoring component 6. Once the signal sent by the displacement monitoring component is received, the alarm component will immediately trigger the alarm function and send out an audible and visual alarm signal to remind the driver and surrounding personnel to pay attention to the existence of the height limit device, take avoidance measures in time, avoid damage to the bridge, and extend its service life.

[0054] In a preferred embodiment, the present invention can be further configured as follows: Figure 1 , Figure 2 As shown; the bracket 1 includes:

[0055] The outer cylinder 101 has one end vertically disposed on the ground, and there are two of them, which are generally disposed parallel to each other;

[0056] An inner rod 102, one end of which extends into the outer cylinder 101 and the other end of which is fixed to the cross beam 2, and the number and distribution position of the inner rod 102 are adapted to the outer cylinder 101; and

[0057] The fastener 103 is provided through the outer cylinder 101, and is used to connect the outer cylinder 101 and the inner rod 102 to each other. The outer cylinder 101 is the main part of the bracket 1, and one end of the outer cylinder 101 is vertically provided on the ground to form a stable support base. There are two outer cylinders 101, and the whole is parallel to each other to ensure the stability and bearing capacity of the bracket. The number and distribution position of the inner rods are adapted to the outer cylinder, making the bracket structure more reasonable and stable. Through the fixing effect of the fastener, the outer cylinder and the inner rod can be closely combined to form a whole, ensuring the stability and reliability of the bracket. When working, The bracket 1 bears the weight and force of the safety protection device under the bridge through the vertical setting of the outer tube 101 and the ground, and the fixed connection between the inner rod 102 and the crossbeam 2. The mutual adaptation of the outer tube and the inner rod and the fixing effect of the fasteners enable the bracket to withstand forces and pressures from different directions and maintain the stability and safety of the structure. At the same time, the design of the bracket also takes into account the needs of adjustability and adaptability. By adjusting the position of the inner rod 102 in the outer tube 101 and fixing it with fasteners 103, the height and stability of the bracket 1 can be adjusted according to actual needs to adapt to different bridge and road conditions.

[0058] In a preferred embodiment, the present invention can be further configured as follows: Figure 1 , Figure 2 As shown; an oblique support 8 is fixedly installed on the side surface of the outer cylinder 101, wherein the number of the oblique supports 8 is not less than four and is equally divided into two groups, which are respectively arranged on the two outer cylinders 101, and a plurality of through holes 12 are processed on the inner rod 102 and are evenly distributed. The aperture and shape of the through holes 12 are adapted to the fasteners 103, and the oblique support 8 is fixedly installed on the side surface of the outer cylinder 101 to enhance the stability and anti-rolling ability of the bracket 1, and ensure that the bracket 1 can be evenly dispersed and stably supported when subjected to lateral forces. A plurality of through holes 12 are also provided, and the design of these through holes 12 enables the inner rod 102 to have more adjustment options when connected to the outer cylinder 101, and the aperture and size and shape of the through holes 12 are adapted to the fasteners 103, ensuring The fastener can pass through the through hole and effectively fix the position of the inner rod 102 in the outer cylinder 101. During operation, according to actual needs, the inner rod 102 can be matched with the fastener 103 by selecting the through holes 12 in different positions to achieve the fixation of the inner rod at different heights in the outer cylinder 101. After the fastener 103 passes through the through hole 12, the inner rod 102 and the outer cylinder 101 are firmly connected together through the fastening action to form a stable supporting structure. At the same time, the presence of the oblique support 8 further enhances the overall stability of the bracket 1. When the bracket is subjected to external forces, the oblique support can effectively disperse and resist these forces to prevent the bracket from tilting or deforming, thereby ensuring the stability and reliability of the safety protection device. The fastener 103 is preferably a bolt.

[0059] In a preferred embodiment, the present invention can be further configured as follows: Figure 4 , Figure 5 As shown; a round rod 14 parallel to the crossbeam 2 is fixedly installed on the inner side of the mounting shell 3, and a movable sleeve 15 is fixedly installed on one end of the height limiting plate 4 located on the inner side of the mounting shell 3, and the movable sleeve 15 is rotatably connected to the outer side of the round rod 14, wherein two torsion springs 16 are arranged on the outside of the round rod 14, and the two torsion springs 16 are respectively located on both sides of the movable sleeve 15, one end of the torsion spring 16 is interconnected with the height limiting plate 4, and the other end of the torsion spring 16 is interconnected with the mounting shell 3, and the round rod 14 provides a reference axis for the rotation of the height limiting plate 4, and a movable sleeve 15 is fixedly installed on one end of the height limiting plate 4 located on the inner side of the mounting shell 3, and the movable sleeve 15 is rotatably connected to the outer side of the round rod 14, which means that the height limiting plate 4 can rotate around the round rod 14, so as to achieve its height limiting function. As an elastic element, the torsion spring has the characteristic of being able to deform when subjected to external force and restore to its original state after the external force disappears. When working, when the super-high vehicle contacts the height limiting plate 4 and causes it to rotate, the torsion spring 16 will be stretched or compressed, thereby storing elastic potential energy. When the vehicle leaves or the external force disappears, the torsion spring 16 will release the stored elastic potential energy and push the height limiting plate 4 to return to its original position. The existence of the torsion spring 16 not only provides a reset function for the height limiting plate 4, but also can mitigate the impact between the height limiting plate and the super-high vehicle to a certain extent, thereby reducing the possible damage to both parties.

[0060] In a preferred embodiment, the present invention can be further configured as follows: Figure 4 , Figure 5 As shown; the buffer member 5 comprises:

[0061] The abutment plate 51 is fixedly mounted on the surface of the movable sleeve 15 and can be displaced synchronously with the rotation of the movable sleeve 15;

[0062] A mounting seat 52, fixedly mounted on the inner side wall of the mounting shell 3; and

[0063] The elastic buffer mechanism 53 is fixedly mounted on the mounting seat 52, and its buffer end faces the abutment plate 51. The abutment plate 51 is fixedly mounted on the surface of the movable sleeve 15, which means that when the height limit plate 4 rotates due to the impact of the super-high vehicle, the movable sleeve 15 rotates accordingly, thereby driving the abutment plate 51 to move synchronously. The mounting seat 52 provides a stable foundation for installing the elastic buffer mechanism 53. The elastic buffer mechanism 53 can be any elastic element with a buffering effect, such as a spring buffer, a rubber block, an anti-impact pad, etc., and its function is to be able to deform when subjected to external force. The movable sleeve 15 drives the abutting plate 51 to move in the direction of the elastic buffer mechanism 53, and the abutting plate 51 contacts and applies pressure to the buffering end of the elastic buffer mechanism, so that the elastic buffer mechanism is deformed to absorb the impact force generated by the collision. Through the buffering effect of the elastic buffer mechanism, the damage that the collision may cause to the height limit plate 4 and the super-high vehicle can be reduced. When the impact force disappears, the elastic buffer mechanism will return to its original state and wait for the next buffering effect.

[0064] In a preferred embodiment, the present invention can be further configured as follows: Figure 4 , Figure 5 As shown; the displacement monitoring member 6 includes:

[0065] An infrared emitter 61 is fixedly mounted on the inner side wall of the mounting shell 3; and

[0066] The infrared receiver 62 is fixedly mounted on the inner side wall of the mounting shell 3, wherein the abutment plate 51 is located between the infrared transmitter 61 and the infrared receiver 62. The infrared transmitter 61 is responsible for transmitting infrared signals, and the infrared receiver 62 is used to receive infrared signals. It is important that the abutment plate 51 is designed to be located between the infrared transmitter 61 and the infrared receiver 62. Under normal circumstances, that is, when the height limit plate 4 is not hit, the abutment plate 51 will block the signal transmitted by the infrared transmitter 61 to the infrared receiver 62, so the receiver cannot receive the signal normally, indicating that the height limit plate is in a positive state. Normal position, however, when the height limit plate 4 is hit by an over-height vehicle and rotates, the movable sleeve 15 drives the abutting plate 51 to move together. As the abutting plate 51 moves, it will not block the signal emitted by the infrared transmitter 61 to the infrared receiver 62. Once the infrared receiver 62 detects the signal, it indicates that the position of the height limit plate 4 has shifted. The displacement monitoring component 6 can monitor the position change of the height limit plate 4 in real time by detecting the blocking of the infrared signal. Once the displacement of the height limit plate is detected, the displacement monitoring component 6 can respond quickly and transmit the signal to the alarm component 7 to trigger the alarm function.

[0067] In a preferred embodiment, the present invention can be further configured as follows: Figure 1 , Figure 3 As shown; the alarm component 7 includes:

[0068] The protective shell 71 is fixedly mounted on the outer side wall of the mounting shell 3;

[0069] A buzzer 72 is fixedly mounted on the inner side of the protective shell 71; and

[0070] The warning light 73 is fixedly installed on the inner side of the protective shell 71. The protective shell 71 protects the internal alarm device and prevents the external environment from interfering with or damaging the alarm device. The buzzer 72 is an alarm device that can emit sound. When the alarm component 7 receives the displacement signal sent by the displacement monitoring component 6, the buzzer 72 will be activated and emit a harsh sound to attract the attention of the surrounding personnel. The warning light 73 is an alarm device that can emit a visual signal by flashing or being always on. When the alarm component 7 is triggered, the warning light 73 will start to flash or become always on, providing a clear warning. The obvious visual prompt enables the surrounding personnel to quickly identify and respond to the alarm. During operation, the alarm component 7 is closely connected with the displacement monitoring component 6. Once the displacement monitoring component 6 detects that the height limit plate 4 has moved, it will immediately send a signal to the alarm component 7. After receiving the signal, the alarm component 7 will quickly activate the buzzer 72 and the warning light 73, and remind the surrounding personnel to pay attention through sound and light alarms, and take corresponding safety measures, such as reversing, not passing under the safety height limit protection device here, or arranging the goods to avoid causing overheight, so as to avoid damage to the bridge and extend its service life.

[0071] In a preferred embodiment, the present invention can be further configured as follows: Figure 1 , Figure 4 As shown; a number of wind holes 17 distributed in an equidistant array are processed on the surface of the height limit plate 4, and a height limit sign 18 is also fixedly installed on the outside of the mounting shell 3. The main function of these wind holes 17 is to reduce the wind resistance generated by the height limit plate 4 when it is subjected to wind force. When the wind passes through the height limit plate 4, the wind holes 17 can allow the wind to pass smoothly, reducing the vortex and pressure formed by the wind on the surface of the height limit plate, thereby reducing the wind load borne by the height limit plate. This design helps to enhance the stability and safety of the height limit plate 4 in a strong wind environment. At the same time, the height limit sign 18 is a marking device used to display the height limit information of a bridge or road to passing vehicles. It usually contains clear text and digital markings so that the driver can quickly identify and understand the height limit requirements. The fixed installation of the height limit sign 18 helps to ensure its stability and visibility under different environmental conditions, provide the driver with accurate height limit prompts, and prevent over-height vehicles from entering restricted areas, thereby protecting the safety of bridge projects.

[0072] The specific working principle of the safety protection device for bridge engineering of the utility model is as follows:

[0073] The device is stably arranged under the bridge through a bracket 1, and a mounting shell 3 is fixed to the end of the bracket by a crossbeam 2. The height limit plate 4 can rotate in the mounting shell 3 and be buffered by a buffer 5 when it is hit to reduce the damage to the overheight vehicle. The displacement monitoring component 6 monitors the position of the height limit plate 4 in real time. Once it is displaced, the alarm component 7 will be triggered to alarm to remind the surrounding personnel to pay attention to safety.

[0074] The bracket 1 is composed of an outer cylinder 101 and an inner rod 102, which are connected by fasteners 103. An oblique support 8 is installed on the side of the outer cylinder 101 to enhance stability. A through hole 12 is processed on the inner rod 102. By selecting a suitable through hole 12 and fixing it with the fasteners 103, the height of the bracket can be adjusted.

[0075] The height limiting plate 4 is rotatably connected to the round rod 14 through a movable sleeve 15, and torsion springs 16 are arranged on both sides. When the height limiting plate 4 is hit, the movable sleeve 15 will drive the abutting plate 51 to move, thereby compressing the elastic buffer mechanism 53 to play a buffering role. The torsion spring 16 provides a restoring force for the height limiting plate 4, so that it can return to its original position after being hit.

[0076] The displacement monitoring component 6 detects the position change of the abutment plate 51 through the infrared transmitter 61 and the infrared receiver 62. When the height limit plate 4 is displaced, the infrared transmitter 61 transmits a signal to the infrared receiver 62, triggering the alarm mechanism. The buzzer 72 and the warning light 73 in the alarm component 7 will work simultaneously to send out an audible and visual alarm signal to remind the surrounding personnel and drivers to pay attention to safety, the existence of the bridge safety height limit protection device, and take corresponding safety measures, such as reversing, not passing under the safety height limit protection device, or arranging the goods to avoid causing the phenomenon of over-height, so as to avoid damage to the bridge and extend its service life;

[0077] The air holes 17 on the surface of the height limit plate 4 can reduce wind resistance and improve its stability in strong wind environments. The height limit sign 18 on the outside of the mounting shell 3 provides the driver with a clear height limit reminder to prevent over-height vehicles from entering the restricted area;

[0078] In summary, the safety protection device for bridge engineering achieves effective safety protection for bridge engineering through the stable support of the bracket, the buffering and rotation of the height limit plate, and the real-time monitoring and alarm design of the displacement.

[0079] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0080] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safety protection device for bridge engineering, characterized in that: A bracket (1), one end of which is disposed on the ground and the entire bracket is located below the bridge, wherein two brackets are provided and are arranged parallel to each other; The crossbeam (2) is fixedly mounted on the end of the bracket (1) and is arranged parallel to the ground; The mounting shell (3) is fixedly mounted on a side surface of the crossbeam (2) close to the ground, and the side surface away from the crossbeam (2) is open; A height limiting plate (4) is rotatably disposed in the mounting shell (3), and one end of the plate extends to the outside of the mounting shell (3), and is capable of relative rotational displacement with the mounting shell (3); A buffer member (5) is disposed in the mounting shell (3) and is used to buffer the height limiting plate (4); A displacement monitoring component (6) is arranged in the mounting shell (3) and is used to monitor the position of the height limiting plate (4) in real time; An alarm component (7) is arranged outside the mounting shell (3) and is used to link with the displacement monitoring component (6) to generate an alarm when the height limiting plate (4) rotates.

2. A safety protection device for bridge engineering according to claim 1, characterized in that: The support (1) comprises: An outer cylinder (101), one end of which is vertically arranged on the ground, and there are two outer cylinders (101), which are arranged parallel to each other as a whole; An inner rod (102), one end of which extends into the outer cylinder (101) and the other end of which is fixed to the crossbeam (2), and the number and distribution position of the inner rod (102) are adapted to the outer cylinder (101); and The fastener (103) is disposed through the outer cylinder (101) and is used to connect the outer cylinder (101) and the inner rod (102) to each other.

3. A safety protection device for bridge engineering according to claim 2, characterized in that: An oblique support (8) is fixedly mounted on the side surface of the outer cylinder (101), wherein the number of the oblique supports (8) is not less than four and is equally divided into two groups, which are respectively arranged on the two outer cylinders (101); a plurality of through holes (12) distributed at equal intervals are processed on the inner rod (102), and the aperture and shape of the through holes (12) are mutually adapted to the fasteners (103).

4. A safety protection device for bridge engineering according to claim 1, characterized in that: A round rod (14) is fixedly mounted on the inner side of the mounting shell (3) and is arranged parallel to the crossbeam (2); a movable sleeve (15) is fixedly mounted on one end of the height limiting plate (4) located on the inner side of the mounting shell (3); the movable sleeve (15) is rotatably connected to the outer side of the round rod (14); two torsion springs (16) are arranged on the outer side of the round rod (14); the two torsion springs (16) are respectively located on both sides of the movable sleeve (15); one end of the torsion spring (16) is interconnected with the height limiting plate (4); and the other end of the torsion spring (16) is interconnected with the mounting shell (3).

5. A safety protection device for bridge engineering according to claim 4, characterized in that: The buffer member (5) comprises: A movable plate (51) is fixedly mounted on the surface of the movable sleeve (15) and can be displaced synchronously with the rotation of the movable sleeve (15); A mounting seat (52) fixedly mounted on an inner side wall of the mounting shell (3); and The elastic buffer mechanism (53) is fixedly mounted on the mounting seat (52), with the buffer end thereof facing the abutting plate (51).

6. A safety protection device for bridge engineering according to claim 5, characterized in that: The displacement monitoring component (6) comprises: An infrared emitter (61) is fixedly mounted on an inner side wall of the mounting shell (3); and The infrared receiver (62) is fixedly mounted on the inner side wall of the mounting shell (3), wherein the abutment plate (51) is located between the infrared transmitter (61) and the infrared receiver (62).

7. A safety protection device for bridge engineering according to claim 1, characterized in that: The alarm component (7) comprises: A protective shell (71) is fixedly mounted on an outer side wall of the mounting shell (3); A buzzer (72) is fixedly mounted on the inner side of the protective shell (71); and The warning light (73) is fixedly mounted on the inner side of the protective shell (71).

8. A safety protection device for bridge engineering according to claim 1, characterized in that: A plurality of air holes (17) distributed in an equidistant array are processed on the surface of the height limiting plate (4), and a height limiting indicator sign (18) is also fixedly mounted on the outside of the installation shell (3).

Images