A combined drive device for tilting guardrails and bridge guardrails

Abstract

This invention provides a combined drive device for tilting guardrails and a bridge guardrail, belonging to the field of construction. It addresses the problems of existing electrically driven tilting devices for bridge guardrails being easily damaged during floods and the waste of human resources associated with manual tilting. The device includes a float, a guide, and an auxiliary drive mechanism. The auxiliary drive mechanism, mounted on the guide, includes a support plate, a spring, a limiting guide post, and a trigger support post. By adding a float, guide, and tilting device, the invention utilizes the upward buoyancy of floodwaters to drive the guardrail tilting. Simultaneously, the trigger support post moves upward to trigger and release the auxiliary drive mechanism. The auxiliary drive mechanism provides auxiliary force for the tilting of the guardrail through the guide. The combined drive device provides dual driving force for the tilting of the guardrail, preventing bridge damage caused by the guardrail obstructing floodwaters and floating debris. This solves the problem of existing electrically driven devices being damaged by water during floods.

Description

Technical Field

[0001] This invention belongs to the field of building construction, and in particular relates to a combined drive device for guardrail flipping and a bridge guardrail. Background Technology

[0002] In most parts of my country, influenced by the continental monsoon climate, rainfall is concentrated and intense. Bridges are highly susceptible to damage from floods and tsunamis, as the force exerted by these events and their accompanying debris is extremely destructive. The force exerted on the railings by floods and tsunamis accounts for a significant proportion of the force exerted on the bridge superstructure. The presence or absence of railings has a substantial impact on the extent and severity of damage to the superstructure. Bridge railings are crucial safety features in bridge engineering; they are strip-shaped energy-absorbing structures installed on the outer side or central median of the bridge. During a vehicle collision, they absorb collision energy through deformation or vehicle elevation, thereby reducing the severity of injury to occupants. However, during floods, this guardrail structure can cause floodwaters carrying floating debris to overflow the bridge surface. The debris is blocked by the guardrail and accumulates in large quantities, leading to a rise in water levels. This significantly increases the horizontal load, vertical lift, and overturning moment on the bridge superstructure. To prevent the guardrail from blocking floating debris, a flip-up bridge guardrail has been designed. This design allows the guardrail to be flipped during floods to prevent damage to the bridge caused by the guardrail blocking floodwaters and floating debris. However, when the guardrail's flipping drive is electric, the electric device is at increased risk of damage due to water immersion during floods. When the guardrail needs to be flipped manually, manually flipping the guardrail before a flood increases the danger to construction workers. Summary of the Invention

[0003] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a combined drive device for guardrail flipping and a bridge guardrail, which solves the problems of the electric drive device for flipping existing bridge guardrails being easily damaged during floods, the waste of human resources in manually flipping guardrails, and the increased danger to construction workers before floods. By relying on the buoyancy force provided by the flood and the upward force provided by the auxiliary drive mechanism to jointly drive the guardrail to flip, the invention aims to avoid bridge damage caused by the bridge guardrail blocking floods and floating objects.

[0004] To achieve the above and other related objectives, the present invention provides a combined drive device for tilting guardrails, comprising a float, a guide member, and an auxiliary drive mechanism:

[0005] The float is located at the bottom of the bridge beam, and its top is fixedly connected to the bottom end of the guide member;

[0006] The guide component is slidably disposed in a guide hole vertically opened in the bridge beam, and is divided into an upper guide component and a lower guide component;

[0007] The auxiliary drive mechanism is disposed on the guide member and includes a support plate, a spring, a limiting guide post and a trigger support post; the support plate is disposed inside the guide hole, and the top end of the support plate is fixedly connected to the bottom end of the spring, the top end of the spring is connected to the bottom end of the upper guide member, and the spring is used to drive the upper guide member to move upward along the guide hole;

[0008] The top end of the limiting guide post is rotatably connected to the bottom end of the upper guide member on the same axis. The bottom end is fixedly provided with a limiting protrusion that protrudes outward in the horizontal direction. The limiting protrusion cooperates with the support plate with a through hole in the middle to reset the spring.

[0009] The bottom end of the trigger support column is fixedly connected to the top end of the lower guide member. There are multiple trigger support columns, which are evenly distributed along the circumference of the lower guide member. The trigger support column is driven to move upward by the float until the top of the column presses against the upper guide member, thus transmitting the upward buoyancy force to the upper guide member.

[0010] Optionally, a first circular through hole is provided in the center of the support plate, and a first through hole is provided around the first circular through hole. There are multiple first through holes and they are evenly distributed along the circumference of the first circular through hole. The first through holes cooperate with the support column.

[0011] The bottom of the support plate is fixedly connected to the inner side of the first circular through hole with a downward protruding first boss. There are multiple first bosses and they are evenly distributed along the circumference of the first circular through hole. The first bosses and the first through hole are arranged at intervals. The downward protruding end face of the first boss is arranged obliquely. The bottom of the support plate is fixedly connected to the outer side away from the first circular through hole with a downward protruding support boss. The support boss is an annular boss.

[0012] The top of the support plate is fixedly connected to the inner side of the first circular through hole with an upward protrusion of a second boss. There are multiple second bosses and they are evenly distributed along the circumference of the first circular through hole. The second bosses and the first through hole are arranged at intervals.

[0013] Optionally, the limiting protrusions are multiple and evenly distributed along the bottom circumferential direction of the limiting guide post.

[0014] Optionally, a trigger support plate is fixedly connected to the top of the trigger support column. A second circular through hole is opened in the center of the trigger support plate. A second through hole is opened around the second circular through hole. There are multiple second through holes and they are evenly distributed along the circumference of the second circular through hole. The second through holes are adapted to the limiting protrusion. A trigger guide column is fixedly connected to the top of the trigger support plate. There are multiple trigger guide columns and they are evenly distributed along the circumference of the trigger support plate. The end of the trigger guide rod away from the trigger support plate is slidably connected in the trigger guide hole vertically opened in the upper guide member.

[0015] The trigger support column includes an inner trigger support column and an outer trigger support column; the top end of the inner trigger support column is fixedly connected to the bottom end of the trigger support disk, and the bottom end face of the inner trigger support column is arranged obliquely; the top end of the outer trigger support column is fixedly connected to the bottom end of the trigger support disk, and the bottom end is fixedly connected to the top end of the lower guide member.

[0016] Optionally, the vertical projection of the float is circular, the top of the float is horizontal and auxiliary guide rods are arranged around the lower guide member, there are at least 3 auxiliary guide rods and they are evenly distributed around the lower guide member, and the end of the auxiliary guide rod away from the float is slidably installed in the auxiliary guide hole vertically opened in the bridge beam.

[0017] The bottom wall of the float gradually bulges outward from the center of the periphery, forming an outwardly bulging streamlined hemispherical structure.

[0018] The present invention also provides a bridge railing, wherein the bridge railing adopts the above-mentioned railing flipping combined drive device, and the bridge railing further includes a railing body, a support member and a flipping member;

[0019] The main body of the guardrail is hinged to the top of the bridge beam;

[0020] One end of the support member is hinged to the main body of the guardrail, and the other end is installed on the flipping member to support the main body of the guardrail.

[0021] One end of the flipping component is fixedly connected to a hinge shaft, which is hinged to an installation groove in the bridge beam. A limiting component is fixedly connected to the hinge shaft, and the top end of the upper guide component is connected to the limiting component.

[0022] Optionally, the guardrail body includes a base, posts, and crossbars; there are multiple bases evenly distributed along the length of the bridge beam, and each of the multiple bases is fixedly connected to the top of the bridge beam; there are multiple posts, each hinged to a base, with the post bent in the middle and protruding outward; and multiple sets of crossbars are fixedly connected to the posts.

[0023] Optionally, the flipping component has a plate-like structure and a strip groove along its length is provided on the side facing the main body of the guardrail, and one end of the support component is slidably connected in the strip groove.

[0024] Optionally, the limiting member is a disc structure with a fan-shaped notch, and a limiting post is horizontally arranged at the top of the guide member, the limiting post cooperating with the fan-shaped notch on the limiting member.

[0025] Optionally, the limiting member is a gear structure, and the side wall of the guide member facing the limiting member is a rack structure, wherein the rack structure meshes with the gear structure.

[0026] As described above, the guardrail tilting combined drive device and bridge guardrail of the present invention have at least the following beneficial effects:

[0027] 1. This invention designs the shape of the float by making the top wall of the float a flat structure that is easy to fit against the bottom of the bridge beam, and the bottom wall of the float is designed to gradually bulge outward from the periphery to the center, forming a streamlined hemispherical structure that bulges outward. When floodwater flows over the bottom wall of the float, it can apply an upward pressure to the float, pressing the top wall of the float against the bottom of the bridge, while also reducing the resistance of the floodwater flow.

[0028] 2. This invention divides the guide component into an upper guide component and a lower guide component, and adds an auxiliary drive mechanism between the upper and lower guide components. A spring is added between the support plate and the upper guide component to form an assist assembly, which uses the upward force released by the compressed spring to drive the upper guide component upward. A reset assembly is formed by the support plate with a central opening and a limiting guide post hinged to the bottom of the upper guide component via a bearing. A limiting protrusion is added to the bottom of the limiting guide post to achieve the compression and reset of the spring. A trigger support post is designed and installed, and its bottom end is fixedly connected to the top end of the lower guide component. The trigger support post floats upward relative to the support plate by relying on a floating block. The trigger support post is divided into an inner trigger support post and an outer trigger support post. The bottom surface of the inner support column and the lower surface of the first boss are arranged obliquely. The trigger support column releases the spring during the upward movement and compresses and resets the spring during the resetting and descent. Through the addition of an auxiliary drive mechanism and the structural design of the trigger support column in the auxiliary drive mechanism, this invention can achieve the upward assistance of the spring release while the trigger support column moves upward. The descent of the trigger support column and the downward force can achieve the compression and reset of the spring (the limiting protrusion is engaged with the lower surface of the first boss), providing a dual driving force for the flipping of the guardrail and improving the overall stability. The combined drive structure of the mechanism can avoid the failure and damage caused by water immersion of the electric drive device during floods.

[0029] 3. This invention, by adding a flipping component, fixes one end of the flipping component to a hinge shaft and hinges it into the mounting groove of the bridge. A limiting component fixedly connected to the hinge shaft, in conjunction with a guide component (the limiting component can be a disc structure fixedly connected to the hinge shaft and coaxial, with a fan-shaped notch on the limiting component cooperating with a limiting post on the top of the guide component; or it can be a gear fixedly connected to the hinge shaft and coaxial, with the sidewalls of the guide component designed as racks that mesh with each other), drives the upper guide component upwards during floods, thereby changing the flipping component from a vertical to a horizontal state (the flipping angle of the flipping component is controlled by designing the upward movement height of the upper guide component). The support member is slidably connected to the rotating member in a strip groove. When the rotating member is horizontally arranged, under the gravity of the guardrail body, one end of the support member slides from the inside to the outside in the strip groove, and the guardrail body flips outward. This avoids the situation where the guardrail blocks floods and floating objects, resulting in a large amount of siltation and damage to the superstructure of the bridge. The addition of the rotating member can achieve the flipping of the guardrail body under the drive of the combined drive device. It can also avoid high-risk operations for construction workers before the flood, and reduce the waste of human resources caused by the need to dismantle the guardrail. In daily use, the invention restricts the upward movement of the guide member and restricts the rotation of the limiting member. The vertical arrangement of the rotating member provides a support point for the support member. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the bridge railing in its normal operating state according to the present invention;

[0031] Figure 2 For the present invention Figure 1 A schematic diagram of the overall structure of the bridge after cross-section.

[0032] Figure 3 For the present invention Figure 2 Schematic diagram of the structure at point A;

[0033] Figure 4 For the present invention Figure 2 Exploded view of the auxiliary drive mechanism at point B;

[0034] Figure 5 This is a schematic diagram showing the spring of the auxiliary drive mechanism in the present invention in a compressed state;

[0035] Figure 6 This is a schematic diagram of the spring of the auxiliary drive mechanism in the present invention being triggered and beginning to extend outward;

[0036] Figure 7 This is a schematic diagram showing the cooperation between the limiting guide post and the upper guide member in this invention;

[0037] Figure 8This is a schematic diagram illustrating the cooperation between the trigger support column and the trigger support disk in this invention;

[0038] Figure 9 This is a schematic diagram of the support disk structure in this invention;

[0039] Figure 10 This is a bottom view of the support plate in this invention;

[0040] Figure 11 This is a schematic diagram of the overall structure of the bridge railing after it has been flipped over according to the present invention.

[0041] Component designation explanation

[0042] Guardrail body-1, base-101, post-102, crossbar-103, support-2, flip-up part-3, hinge shaft-301, limit part-302, fan-shaped notch-303, strip groove-304, guide-4, upper guide-401, lower guide-402, limit post-403, float-5, auxiliary guide rod-6, support plate-7, first circular through hole-701, first through hole-702, first boss-703, support boss-704, second boss-705, spring-8, limit guide post-9, limit protrusion-901, trigger support post-10, trigger support plate-11, second circular through hole-1101, second through hole-1102, trigger guide post-1103. Detailed Implementation

[0043] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0044] Please see Figures 1 to 11 It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0045] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0046] Please see Figures 1 to 11 This invention provides a combined drive device for tilting guardrails, comprising a float 5, a guide 4, and an auxiliary drive mechanism: the float 5 is disposed at the bottom of the bridge beam, and its top is fixedly connected to the bottom end of the guide 4; the guide 4 is slidably disposed within a vertically opened guide hole in the bridge beam, and is divided into an upper guide 401 and a lower guide 402; the auxiliary drive mechanism is disposed on the guide and includes a support plate 7, a spring 8, a limiting guide post 9, and a trigger support post 10; the support plate 7 is disposed inside the guide hole, and its top end is fixedly connected to the bottom end of the spring 8, the top end of the spring 8 is connected to the bottom end of the upper guide 401, and the spring is used to drive the upper guide 401 along... The guide hole moves upward; the top end of the limiting guide post 9 and the bottom end of the upper guide member 401 can be connected by a bearing. The limiting guide post 9 rotates axially around the axis of the upper guide member 401 through the bearing. The bottom end of the limiting guide post 9 is fixedly provided with a limiting protrusion 901 that protrudes outward in the horizontal direction. The limiting protrusion 901 cooperates with the support plate 7 with a through hole in the middle to reset the spring 8. The bottom end of the trigger support post 10 is fixedly connected to the top end of the lower guide member 402. There are multiple trigger support posts 10 and they are evenly distributed along the circumference of the lower guide member 402. The trigger support post 10 is driven to move upward by the float 5 until the top abuts against the upper guide member 401, and the upward buoyancy force is transmitted to the upper guide member 401.

[0047] Please see Figure 9 and Figure 10 A first circular through hole 701 is provided in the center of the support plate 7, and a first through hole 702 is provided around the first circular through hole 701. Multiple first through holes 702 are evenly distributed along the circumference of the first circular through hole 701, and the first through holes 702 cooperate with the trigger support post 10. A downwardly protruding first boss 703 is fixedly connected to the bottom of the support plate 7 near the inner side of the first circular through hole 701. Multiple first bosses 703 are evenly distributed along the circumference of the first circular through hole 701. The first boss 703 and the first... Through holes 702 are arranged at intervals. The downward protruding end face of the first boss 703 is arranged obliquely. The bottom of the support plate 7 is fixedly connected to the outer side away from the first circular through hole 701 with a downward protruding support boss 704. The support boss 704 is an annular boss. The top of the support plate 7 is fixedly connected to the inner side of the first circular through hole 701 with an upward protruding second boss 705. There are multiple second bosses 705 and they are evenly distributed along the circumference of the first circular through hole 701. The second bosses 705 and the first through hole 702 are arranged at intervals.

[0048] Please see Figure 7 The limiting protrusions 901 are multiple and are evenly distributed along the bottom circumference of the limiting guide post 9;

[0049] Please see Figure 8 A trigger support plate 11 is fixedly connected to the top of the trigger support column 10. A second circular through hole 1101 is formed in the center of the trigger support plate 11. Multiple second through holes 1102 are formed around the second circular through hole 1101, and the second through holes 1102 are evenly distributed along the circumference of the second circular through hole 1101. The second through holes 1102 are adapted to the limiting protrusion 901. A trigger guide column 1103 is fixedly connected to the top of the trigger support plate 11. Multiple trigger guide columns 1103 are evenly distributed along the trigger support plate 10. The trigger guide rod 11 is evenly distributed around the circumference of the trigger support disk 11. The end of the trigger guide rod 1103 away from the trigger support disk 11 is slidably connected in the trigger guide hole vertically opened in the upper guide member 401. The trigger support column 10 includes an inner trigger support column and an outer trigger support column. The top end of the inner trigger support column is fixedly connected to the bottom end of the trigger support disk 11, and the bottom end of the inner trigger support column is arranged obliquely. The top end of the outer trigger support column is fixedly connected to the bottom end of the trigger support disk 11, and the bottom end is fixedly connected to the top end of the lower guide member 402.

[0050] Please see Figure 5 and Figure 6 When the trigger support column 10 is not floating, the side walls of the two adjacent inner trigger support columns and the first protrusion 703 at the bottom of the support plate form a groove to limit the limiting protrusion 901 at the bottom of the limiting guide column 9, thereby compressing the spring 8. When the trigger support column 10 moves upward under the buoyancy of the float 5, the bottom end of the inner trigger support column rises to be flush with the lower end face of the first protrusion 703. The limiting protrusion 901 at the bottom of the limiting guide column 9 slides down along the lower end face of the first protrusion 703 under the outward extension force of the spring 8 to the bottom end face of the inner trigger support column. The trigger support plate 11 at the top of the trigger support column 10 presses against the bottom end of the upper guide member 401. The upper guide member 401 moves upward under the dual force of the outward restoring force of the spring 8 and the upward buoyancy force of the float 5, providing a dual driving force for the flipping of the guardrail and improving the overall stability.

[0051] After the flood, when preparing to reset the auxiliary drive mechanism, the side walls of the two adjacent second protrusions 705 and the bottom end of the inner trigger support column form a new limiting groove. As the flood recedes, under the combined action of its own gravity and external downward force, the bottom end of the inner trigger support column descends to be flush with the lower end face of the first protrusion 703. The limiting protrusion 901 at the bottom end of the limiting guide column 9 slides down to the lower end face of the first protrusion 703 under the downward force of the bottom end of the inner trigger support column. As the trigger support column 10 descends under its own gravity, a new limiting groove is formed on the side walls of the inner trigger support column. The first protrusion 703 at the bottom of the wall and the support plate forms a groove, which completes the compression and reset of the spring in the auxiliary drive mechanism, triggering the support column 10 to continue to descend and return to the initial state under the action of gravity. The present invention divides the guide member 4 into an upper guide member 401 and a lower guide member 402, and installs an auxiliary drive mechanism between the upper guide member 401 and the lower guide member 402. By installing a spring 8 between the support plate 7 and the upper guide member 401, an auxiliary assist combination is formed, which is used to drive the upper guide member 401 to move upward by the upward force released by the compressed spring 8. A reset assembly is formed by the support plate 7 with a central opening and the limiting guide post 9 hinged to the bottom of the upper guide member 401 via a bearing. A limiting protrusion 901 is added to the bottom of the limiting guide post 9 to achieve compression reset of the spring 8. A trigger support post 10 is designed and installed, with its bottom end fixedly connected to the top of the lower guide member 402. The trigger support post 10 floats upward relative to the support plate 7 by the upward movement of the float 5. The trigger support post 10 is divided into an inner trigger support post and an outer trigger support post. The bottom surface of the inner support post and the first protrusion 703 are connected... The lower end face is arranged obliquely. The trigger support column 10 releases the spring 8 during the upward floating period and compresses and resets the spring 8 during the reset and descent period (the limit protrusion 901 is engaged with the lower end face of the first protrusion 703). When the flood comes, it provides a dual driving force for the overturning of the guardrail, improving the overall stability. The combined drive structure of the mechanism can avoid the failure and damage caused by water immersion of the electric drive device when the flood comes. After the flood, the reset structure can be used to reset and reuse the auxiliary drive mechanism.

[0052] In this embodiment, please refer to Figure 1 , Figure 2 and Figure 11The vertical projection of the float 5 is circular. The top of the float 5 is horizontal, and auxiliary guide rods 6 are arranged around the guide rod 4. There are at least three auxiliary guide rods 6, which are evenly distributed around the guide rod 4. The end of the auxiliary guide rod 6 away from the float is slidably installed in the auxiliary guide hole vertically opened in the bridge beam. The auxiliary guide rods 6 evenly distributed around the guide rod 4 and the corresponding auxiliary guide hole opened at the bottom of the bridge can effectively ensure the sliding trajectory of the float 5 in the vertical direction. By adding multiple auxiliary guide rods 6, the horizontal force of the flood acting on the float 5 can be effectively dispersed, reducing the impact of the flood. The guide rod 4 is deformed due to the horizontal force of the flood and cannot enter the guide hole, thus failing to change the state of the flipping part 3. The bottom wall of the float 5 gradually bulges outward from the center of the periphery, forming an outwardly protruding streamlined hemispherical structure. By designing the shape of the float 5, the top wall of the float 5 is flat and easy to fit against the bottom of the bridge beam. The bottom wall of the float 5 gradually bulges outward from the center of the periphery, forming an outwardly protruding streamlined hemispherical structure. When the flood flows over the bottom wall of the float 5, it can apply an upward pressure to the float 5, pressing the top wall of the float 5 tightly against the bottom of the bridge, which can also reduce the resistance of the flood flow.

[0053] This invention also provides a bridge railing; please refer to [link / reference]. Figure 1 , Figure 2 , Figure 3 and Figure 11The bridge railing adopts the aforementioned railing flipping combined drive device. The bridge railing also includes a railing body 1, a support member 2, and a flipping member 3. The railing body 1 is hinged to the top of the bridge beam. One end of the support member 2 is hinged to the railing body 1, and the other end is mounted on the flipping member 3 to support the railing body 1. One end of the flipping member 3 is fixedly connected to a hinge shaft 301, which is hinged to an installation groove in the bridge beam. A limiting member 302 is fixedly connected to the hinge shaft 301. The top end of the upper guide member 401 is connected to... The limiting member 302 is connected. In this invention, the guide member 401 can be driven to move up and down by the added combined driving device. By adding a flipping member 3 that can flip outward to the bridge railing, the flipping member 3 is a plate-shaped structure with a strip groove 304 along the length direction on the side facing the railing body 1. One end of the support member 2 is slidably connected in the strip groove 304. When a flood comes, the flipping member 3 flips from a vertical state to a horizontal state under the upward force of the combined driving device. Under the action of gravity, the railing body 1 pushes the support member 2 to slide. One end of the railing slides outward from the inside within the strip groove 304, allowing the main body 1 of the guardrail to flip outward. This prevents the main body 1 from blocking floodwaters and floating debris, thus avoiding the accumulation of silt and potential damage to the bridge's superstructure. The strip groove 304 can also be designed on the two side walls of the flipping component 3 (not shown in the figure). Correspondingly, two support members 2 can be designed, with one end of each support member 2 slidably connected to the strip groove 304, and the other end hinged to both sides of the upright post 102 on the main body of the guardrail. When the floodwaters recede, the main body of the guardrail is lifted, allowing the support to... As the guardrail body 1 is lifted, the support member 2 slides from the outside to the inside of the strip groove 304. The flipping member 3 flips from a horizontal to a vertical state under the gravity of the float 5. Then, by manually applying a downward force to the upper guide member 401, the auxiliary drive mechanism is reset and installed (the reset auxiliary drive mechanism can also provide resistance to small loads such as wind force when the guardrail body is subjected to small loads). In the vertically arranged state, the flipping member 3 provides a support point for the support member 2. The support member 2 supports the guardrail body 1 to complete the daily protection of the guardrail body 1.

[0054] In this embodiment, please refer to Figure 2 and Figure 3The limiting member 302 is a disc structure with a fan-shaped notch 303. A limiting post 403 is horizontally arranged at the top of the upper guide member 401. The limiting post 403 cooperates with the fan-shaped notch 302 on the limiting member 301. During floods, the combined drive device moves the upper guide member 401 upwards, causing the limiting post 403 to move upwards and contact the upper contact surface of the fan-shaped notch 303, continuing to move upwards and causing the limiting member 302 to rotate. Simultaneously, the flipping member 3 tilts outwards. After the top of the float 5 is pressed against the bottom of the bridge, the spring 8 extends outwards, the upper guide member 401 stops floating, and the flipping member 3 changes from a vertical to a horizontal state. In daily use, the weight of the float 5 itself exerts a force on the upper guide member 401. A downward force is applied to component 401, and the limiting post 403 abuts against the lower contact surface of the fan-shaped notch 303 and provides an inward flipping force for the flipping component 3. A limiting plate (not shown in the figure) is installed on the side of the mounting groove facing the flipping component 3 to support and limit the inward flipping of the flipping component 3, ensuring the vertical arrangement of the flipping component 3. The limiting component 302 fixedly installed on the hinge shaft 301 can be a gear structure. By designing the side wall of the upper guide component 401 facing the limiting component 302 as a rack structure (not shown in the figure), when a flood comes, the combined drive device drives the upper guide component 401 to move upward, and the gear-shaped limiting component 302 drives the flipping component 3 to flip outward under the drive of the upper guide component 401.

[0055] In this embodiment, please refer to Figure 1 , Figure 2 and Figure 11 The guardrail body 1 includes posts 102 and crossbars 103. There are multiple posts 102, each hinged to the base 101. The posts 102 are bent in the middle and protrude outward. Multiple sets of crossbars 103 are fixedly connected to the posts 102. By setting two posts 102 as a group and installing multiple sets of crossbars 103 between two posts 102, the guardrail body 1 on the bridge is divided into multiple groups. The modular design allows for the replacement of damaged parts if a vehicle accident occurs during daily use, facilitating installation and maintenance as well as reset work after floods.

[0056] In summary, the guardrail flipping combined drive device and bridge guardrail of the present invention effectively overcome the various shortcomings of the prior art.

[0057] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A combined drive device for tilting guardrails, characterized in that: Includes floats, guides, and auxiliary drive mechanisms: The float is located at the bottom of the bridge beam, and its top is fixedly connected to the bottom end of the guide member; The guide component is slidably disposed in a guide hole vertically opened in the bridge beam, and is divided into an upper guide component and a lower guide component; The auxiliary drive mechanism is disposed on the guide member and includes a support plate, a spring, a limiting guide post and a trigger support post; the support plate is disposed inside the guide hole, and the top end of the support plate is fixedly connected to the bottom end of the spring, the top end of the spring is connected to the bottom end of the upper guide member, and the spring is used to drive the upper guide member to move upward along the guide hole; The top end of the limiting guide post is rotatably connected to the bottom end of the upper guide member on the same axis. The bottom end is fixedly provided with a limiting protrusion that protrudes outward in the horizontal direction. The limiting protrusion cooperates with the support plate with a through hole in the middle to reset the spring. The bottom end of the trigger support column is fixedly connected to the top end of the lower guide member. There are multiple trigger support columns, which are evenly distributed along the circumference of the lower guide member. The trigger support column is driven to move upward by the float until the top of the column presses against the upper guide member, thus transmitting the upward buoyancy force to the upper guide member. The support plate has a first circular through hole in the middle, and a first through hole is formed around the first circular through hole. There are multiple first through holes, which are evenly distributed along the circumference of the first circular through hole. The first through holes cooperate with the trigger support column. The bottom of the support plate is fixedly connected to the inner side of the first circular through hole with a downward protruding first boss. There are multiple first bosses and they are evenly distributed along the circumference of the first circular through hole. The first bosses and the first through hole are arranged at intervals. The downward protruding end face of the first boss is arranged obliquely. The bottom of the support plate is fixedly connected to the outer side away from the first circular through hole with a downward protruding support boss. The support boss is an annular boss. The top of the support plate is fixedly connected to the inner side of the first circular through hole with an upward protrusion of a second boss. There are multiple second bosses and they are evenly distributed along the circumference of the first circular through hole. The second bosses and the first through hole are arranged at intervals. A trigger support plate is fixedly connected to the top of the trigger support column. A second circular through hole is opened in the middle of the trigger support plate. A second through hole is opened around the second circular through hole. There are multiple second through holes and they are evenly distributed along the circumference of the second circular through hole. The second through holes are adapted to the limiting protrusion. A trigger guide column is fixedly connected to the top of the trigger support plate. There are multiple trigger guide columns and they are evenly distributed along the circumference of the trigger support plate. The end of the trigger guide column away from the trigger support plate is slidably connected in the trigger guide hole vertically opened in the upper guide member. The trigger support column includes an inner trigger support column and an outer trigger support column; the top end of the inner trigger support column is fixedly connected to the bottom end of the trigger support disk, and the bottom end face of the inner trigger support column is arranged obliquely; the top end of the outer trigger support column is fixedly connected to the bottom end of the trigger support disk, and the bottom end is fixedly connected to the top end of the lower guide member.

2. The guardrail tilting combined drive device according to claim 1, characterized in that: The limiting protrusions are multiple and are evenly distributed along the bottom circumference of the limiting guide post.

3. The guardrail tilting combined drive device according to claim 1, characterized in that: The vertical projection of the float is circular. The top of the float is horizontal and auxiliary guide rods are arranged around the lower guide member. There are at least 3 auxiliary guide rods and they are evenly distributed around the lower guide member. The end of the auxiliary guide rod away from the float is slidably installed in the auxiliary guide hole vertically opened in the bridge beam. The bottom wall of the float gradually bulges outward from the center of the periphery, forming an outwardly bulging streamlined hemispherical structure.

4. A bridge railing, characterized in that: The bridge railing adopts the railing flipping combined drive device as described in any one of claims 1-3, and the bridge railing further includes a railing body, a support member, and a flipping member; The main body of the guardrail is hinged to the top of the bridge beam; One end of the support member is hinged to the main body of the guardrail, and the other end is installed on the flipping member to support the main body of the guardrail. One end of the flipping component is fixedly connected to a hinge shaft, which is hinged to an installation groove in the bridge beam. A limiting component is fixedly connected to the hinge shaft, and the top end of the upper guide component is connected to the limiting component.

5. The bridge railing according to claim 4, characterized in that: The guardrail body includes a base, posts, and crossbars; there are multiple bases evenly distributed along the length of the bridge beam, and each base is fixedly connected to the top of the bridge beam; there are multiple posts, each hinged to a base, with the post bent in the middle and protruding outward; and multiple sets of crossbars are fixedly connected to the posts.

6. The bridge railing according to claim 4, characterized in that: The flipping component has a plate-like structure and a strip-shaped groove along its length is opened on the side facing the main body of the guardrail. One end of the support component is slidably connected in the strip-shaped groove.

7. The bridge railing according to claim 4, characterized in that: The limiting component is a disc structure with a fan-shaped notch, and a limiting post is horizontally arranged at the top of the guide component. The limiting post cooperates with the fan-shaped notch on the limiting component.

8. The bridge railing according to claim 4, characterized in that: The limiting member is a gear structure, and the side wall of the guide member facing the limiting member is a rack structure, which meshes with the gear structure.

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