Pedestrian handrail expansion device for bridge expansion joint
By setting up a combination device of connecting rods, telescopic nodes and articulated nodes at the bridge expansion joints, the safety risks caused by uneven expansion and contraction of bridge railings are solved, and the coordinated displacement of the railing and the beam body is achieved, ensuring the safety and protection integrity of the bridge.
Patent Information
- Application Number
- CN202421977508.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-08-15
AI Technical Summary
The pedestrian railings at the expansion joints of the bridge have increased lateral spacing due to uneven expansion and contraction, which has a risk of lateral falls by pedestrians and non-motor vehicles, affecting the safety of bridge operations.
A pedestrian railing expansion device is designed for bridge expansion joints. Through the combination of connecting rods, expansion nodes and articulated nodes, it can adapt to the expansion deformation of the bridge, limit longitudinal displacement and angular displacement, and ensure the coordinated displacement of the railing and the beam body.
It effectively limits the gap between the railings at the end of the beam, ensures the safety of bridges and railing structures, and improves the safety of bridge operations and overall protection effect.
Smart Images
Figure CN223074597U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge protection, and particularly relates to a telescopic device for a pedestrian railing at a bridge expansion joint. Background Art
[0002] The design and construction of greenways aim to connect various natural and cultural landscape resources, and are suitable for slow travel and leisure modes such as walking and cycling. They have multiple functions such as beautifying the environment, cultural display, health and leisure, and connecting urban and rural areas. It is not only a corridor connecting urban and rural green open spaces for recreation and fitness, but also has functions such as citizens' green travel and biological migration. Greenways also carry many functions such as water conservation, air purification, leisure tourism, and sports. Just like the capillaries of the human body, they penetrate the "internal organs" of the city, provide a good environment for the surrounding residents, and bring the green travel mode and the civilized and healthy living concept into the lives of citizens.
[0003] With the continuous promotion of the construction of park cities, the completion and use of greenways have become one of the main choices for the general public to walk, cycle, and exercise in recent years. Due to the construction of a large number of greenways, the construction scale of greenway bridges has also increased, and the form of greenway bridge railings and the safety of railings have gradually attracted people's attention. Due to the influence of temperature, longitudinal force, shrinkage and creep, etc. on the main bridge structure, longitudinal telescopic displacement and rotation angles of 1 - 2 cm at least and dozens of cm at most are likely to occur at the end of each continuous beam. Therefore, expansion joints are arranged at the beam end positions of bridges to ensure the smooth passage of pedestrians and non-motor vehicles on the bridge deck without the risk of vertical drop, and at the same time meet the bridge expansion requirements. As the main protective structure on the bridge deck attached to the main bridge structure, the length of the railing also expands and contracts with the expansion and contraction of the main bridge structure. To ensure that the longitudinal components of the bridge railing are not deformed, damaged or crushed by the expansion and contraction of the main structure, the components such as the railing handrail of the bridge are mostly disconnected with the setting of the bridge expansion joint. Due to the large or small expansion amount, the beam end telescopic displacement of some pedestrian bridges with a large continuous length is large, resulting in an increased lateral spacing of the railings at the expansion joint. The excessive gap poses a risk of lateral fall for pedestrians and non-motor vehicles, bringing management difficulties and great challenges to the operation safety of the bridge. Content of the Utility Model
[0004] The purpose of the utility model is to provide a telescopic device for a pedestrian railing at a bridge expansion joint to solve the deficiencies of the prior art. The device can adapt to the telescopic deformation of the bridge, not only ensure the safety of the bridge structure itself, but also ensure the safety of the railing structure itself, and at the same time have the railing protection function, which has important guiding significance and far-reaching influence on the construction of greenway bridges and pedestrian landscape bridges.
[0005] The utility model is realized through the following technical solutions:
[0006] A pedestrian railing telescopic device for bridge expansion joints, comprising:
[0007] Link rods, the pedestrian railings on both sides of the bridge expansion joint are connected by the link rods, the link rods are parallel to the bridge, and the middle part of the link rods is provided with telescopic joints and hinge joints;
[0008] The link rods change their own lengths through the telescoping of the telescopic joints;
[0009] The link rods change the included angle between the link rod parts at both ends of the hinge joint through the rotation of the hinge joint, and the rotation direction is in the vertical plane and rotates within the plane parallel to the pedestrian railing.
[0010] Compared with the prior art, due to the large and small expansion amounts, the beam end expansion displacement of some pedestrian bridges with larger joint lengths is larger, resulting in an increase in the lateral spacing of the railings at the expansion joints. The excessive gap poses a risk of pedestrians and non-motor vehicles falling laterally, bringing management difficulties and great challenges to the operation safety of the bridge. The utility model provides a pedestrian railing telescopic device for bridge expansion joints, a telescopic device that can adapt to the expansion and deformation of the bridge. This device can not only ensure the safety of the bridge structure itself, but also ensure the safety of the railing structure itself. At the same time, it has the function of railing protection, which has important guiding significance and far-reaching influence on the construction of greenway bridges and pedestrian landscape bridges. In the specific scheme, link rods are arranged between the pedestrian railings on both sides of the bridge expansion joint. In this way, when the expansion joint is large, the link rods can play a protective role, thus avoiding the risk of pedestrians and non-motor vehicles falling laterally caused by the excessive gap; in addition, to adapt to the expansion and deformation of the expansion joint, telescopic joints and hinge joints are respectively provided in the middle of the link rods. Through the telescopic change of the telescopic joints, the deformation of the expansion joint in width can be adapted, and the longitudinal expansion displacement can be released. Through the rotational change of the hinge joints, the misalignment deformation of the expansion joint in the up and down directions can be adapted, and the angular displacement can be released; therefore, through the link rods and the telescopic joints and hinge joints thereon, the expansion and deformation of the bridge can be adapted, and the coordinated displacement of the railing and the beam body can be conveniently and reliably realized, effectively restricting the gap of the beam end railing caused by the longitudinal displacement and angular displacement generated by the beam body, and ensuring the integrity of the bridge deck railing protection.
[0011] To ensure the integrity of the connection, link rods are provided on both the handrail above the pedestrian railing and the main body below. It is set that: a handrail connection assembly is connected to the handrail of the pedestrian railing, a main body connection assembly is connected to the main body of the pedestrian railing, and both the handrail connection assembly and the main body connection assembly include link rods.
[0012] As a specific structure of an armrest connection component, the connecting rod in the armrest connection component includes a first connecting rod and a second connecting rod respectively arranged at both ends. The first connecting rod and the second connecting rod are respectively sleeved on the armrest rod in a sliding manner, and the adjacent ends of the first connecting rod and the second connecting rod are hinged.
[0013] To make the two ends of the connecting rod expand and contract evenly and adapt to a larger change in the expansion and contraction amount, telescopic joints need to be provided on both the first connecting rod and the second connecting rod, that is, there are two telescopic joints and one hinge joint, and it is set as follows: The first connecting rod and the second connecting rod are respectively provided with a matching screw rod and a first long hole between them and the respective armrests. The first long hole is arranged along the length direction of the connecting rod, and the screw rod is connected to the first long hole and can move along the length direction of the first long hole. In this solution, the first long hole can be arranged on the first connecting rod or the second connecting rod, or on the armrest, as long as the movement along the length direction can be achieved.
[0014] To achieve the hinge connection, the adjacent ends of the first connecting rod and the second connecting rod are both provided with first hinge heads, and both of the first hinge heads are provided with first through holes for bolts to pass through.
[0015] To reduce the gap, a number of body connection components are evenly distributed in the height direction of the main body of the pedestrian railing.
[0016] As a specific structure of a body connection component, the connecting rod in the body connection component includes a third connecting rod, a fourth connecting rod and a fifth connecting rod. The third connecting rod and the fourth connecting rod are respectively fixed on the main bodies of the pedestrian railings on both sides of the bridge expansion joint. One end of the fifth connecting rod is slidably connected to the third connecting rod and can slide along the length direction of the connecting rod; the other end of the fifth connecting rod is hinged to the fourth connecting rod.
[0017] To prevent the connecting rod from sliding out, one end of the fifth connecting rod slides into the interior of the third connecting rod, and one end of the fifth connecting rod is provided with an enlarged head adapted to the interior of the third connecting rod to prevent one end of the fifth connecting rod from sliding out of the third connecting rod. The setting method of the enlarged head is an existing conventional solution, such as setting an enlarged head at the end of the fifth connecting rod and an enlarged hole inside the third connecting rod, and the enlarged head can only slide inside the enlarged head.
[0018] To achieve the hinge connection, the adjacent ends of the other end of the fifth connecting rod and the fourth connecting rod are both provided with second hinge heads, and both of the second hinge heads are provided with second through holes for bolts to pass through.
[0019] To enable the two ends of the connecting rod to expand and contract evenly and adapt to a larger range of expansion and contraction, a second expansion joint is provided at the hinged position, which is set as follows: the second through hole is a second long slot, the second long slot is arranged along the length direction of the connecting rod, and the bolt can move along the length direction of the second long slot. In this solution, two expansion joints and a hinged joint are also provided on the connecting rod of the body connection assembly. One of the expansion joints is located at the hinged joint, which is realized by the bolt and the second long slot. It can not only achieve hinging but also move along the length direction of the second long slot.
[0020] Compared with the prior art, the present invention has the following advantages and beneficial effects:
[0021] The present invention provides a pedestrian railing expansion device for bridge expansion joints, which can adapt to the expansion and contraction deformation of the bridge. This device can not only ensure the safety of the bridge structure itself but also the safety of the railing structure itself. At the same time, it has the function of railing protection, which has important guiding significance and far-reaching influence on the construction of greenway bridges and pedestrian landscape bridges. Through the expansion and contraction changes of the expansion joints, it adapts to the deformation of the expansion joint in width and releases the longitudinal expansion displacement. And through the rotation change of the hinged joint, it adapts to the dislocation deformation of the expansion joint in the up and down direction and releases the angular displacement. Therefore, through the connecting rod and the expansion joints and hinged joints thereon, it can adapt to the expansion and contraction deformation of the bridge, conveniently and reliably realize the coordinated displacement of the railing and the beam body, effectively limit the gap of the beam end railing caused by the longitudinal displacement and angular displacement generated by the beam body, and ensure the integrity of the bridge deck railing protection. Brief Description of the Drawings
[0022] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, form a part of this application, and do not constitute a limitation to the embodiments of the present invention. In the drawings:
[0023] Figure 1 It is a schematic structural diagram of the pedestrian railing expansion device for bridge expansion joints provided by the present invention;
[0024] Figure 2 It is a top view of the handrail connection assembly provided by the present invention;
[0025] Figure 3 It is a schematic structural diagram of the expansion joint of the handrail connection assembly provided by the present invention;
[0026] Figure 4 It is a schematic structural diagram of the hinged joint of the handrail connection assembly provided by the present invention (the left is an elevation view and the right is a top view);
[0027] Figure 5 It is a top view of the body connection assembly provided by the present invention;
[0028] Figure 6 Schematic structural diagram of the telescopic joint at the body connection assembly provided by the present utility model;
[0029] Figure 7 Schematic structural diagram of the hinge joint at the body connection assembly provided by the present utility model (left is the elevation view, and right is the top view).
[0030] Marks in the attached drawings and corresponding names of components:
[0031] 1 - Handrail connection assembly, 101 - First connecting rod, 102 - Second connecting rod, 103 - Screw rod, 104 - First long hole, 2 - Body connection assembly, 201 - Third connecting rod, 202 - Fourth connecting rod, 203 - Fifth connecting rod, 204 - Enlarged head, 205 - Second through hole. Specific embodiments
[0032] To make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with embodiments and the attached drawings. The illustrative embodiments of the present utility model and their descriptions are only used to explain the present utility model and do not limit the present utility model.
[0033] Embodiment 1:
[0034] This Embodiment 1 provides a pedestrian railing telescopic device for bridge expansion joints, as Figure 1 shown, including:
[0035] A connecting rod, which connects the pedestrian railings on both sides of the bridge expansion joint. The connecting rod is parallel to the bridge, and the middle part of the connecting rod is provided with a telescopic joint and a hinge joint;
[0036] The connecting rod changes its own length through the telescoping of the telescopic joint;
[0037] The connecting rod changes the included angle between the connecting rod parts at both ends of the hinge joint through the rotation of the hinge joint. The direction of rotation is in the vertical plane and rotates within the plane parallel to the pedestrian railing.
[0038] In view of the problem in the prior art that, due to the large or small amount of expansion and contraction, the beam-end expansion and displacement of some pedestrian bridges with a relatively large joint length are large, resulting in an increased lateral spacing of the railings at the expansion joint. The excessive gap poses a risk of pedestrians and non-motor vehicles falling sideways, bringing management difficulties and great challenges to the operation safety of the bridge. The present utility model provides a telescopic device for pedestrian railings at the bridge expansion joint, which can adapt to the telescopic deformation of the bridge. This device can not only ensure the safety of the bridge structure itself, but also ensure the safety of the railing structure itself, and at the same time has the function of railing protection, which has important guiding significance and far-reaching influence on the construction of greenway bridges and pedestrian landscape bridges. In a specific solution, a connecting rod is arranged between the pedestrian railings on both sides of the bridge expansion joint. In this way, when the expansion joint is large, the connecting rod can play a protective role to avoid the risk of pedestrians and non-motor vehicles falling sideways caused by the excessive gap. In addition, in order to adapt to the telescopic deformation of the expansion joint, a telescopic joint and a hinge joint are respectively provided in the middle of the connecting rod. Through the telescopic change of the telescopic joint, the deformation of the expansion joint in width can be adapted, and the longitudinal expansion displacement can be released. Through the rotational change of the hinge joint, the misalignment deformation of the expansion joint in the up and down directions can be adapted, and the angular displacement can be released. Therefore, through the connecting rod and the telescopic joint and hinge joint thereon, the telescopic deformation of the bridge can be adapted, and the coordinated displacement of the railing and the beam body can be conveniently and reliably realized, effectively limiting the gap of the beam-end railing caused by the longitudinal displacement and angular displacement generated by the beam body, and ensuring the integrity of the bridge deck railing protection.
[0039] To ensure the integrity of the connection, connecting rods are provided on both the handrail above the pedestrian railing and the main body below. It is set that: a handrail connection assembly 1 is connected to the handrail of the pedestrian railing, a main body connection assembly 2 is connected to the main body of the pedestrian railing, and both the handrail connection assembly 1 and the main body connection assembly 2 include connecting rods.
[0040] Embodiment 2:
[0041] This Embodiment 2 further limits on the basis of Embodiment 1 and provides a specific structure of the handrail connection assembly 1, as Figures 2 - 4 shown.
[0042] The connecting rod in the handrail connection assembly 1 includes a first connecting rod 101 and a second connecting rod 102 respectively arranged at both ends. The first connecting rod 101 and the second connecting rod 102 are respectively slidably sleeved on the handrail, and the adjacent ends of the first connecting rod 101 and the second connecting rod 102 are hinged.
[0043] To enable the two ends of the connecting rod to expand and contract evenly and adapt to a larger range of expansion and contraction, telescopic joints need to be provided on both the first connecting rod 101 and the second connecting rod 102, that is, there are two telescopic joints and one hinge joint, arranged as follows: between the first connecting rod 101 and the second connecting rod 102 and their respective matching handrails, there are adapted screw rods 103 and first long holes 104. The first long holes 104 are arranged along the length direction of the connecting rod, and the screw rods 103 are connected to the first long holes 104 and can move along the length direction of the first long holes 104. In this solution, the first long holes 104 can be arranged on the first connecting rod 101 or the second connecting rod 102, or on the handrail, as long as the movement along the length direction can be achieved.
[0044] To achieve hinged connection, the adjacent ends of the first connecting rod 101 and the second connecting rod 102 are both provided with first hinge heads, and both of the first hinge heads are provided with first through holes for bolts to pass through.
[0045] To reduce the gap, a number of body connection components 2 are evenly distributed along the height direction of the main body of the pedestrian railing.
[0046] Embodiment 3:
[0047] This Embodiment 3 is further limited on the basis of Embodiment 1, and provides a specific structure of the body connection component 2, as shown in Figures 5 - 7 shown.
[0048] The connecting rod in the body connection component 2 includes a third connecting rod 201, a fourth connecting rod 202 and a fifth connecting rod 203. The third connecting rod 201 and the fourth connecting rod 202 are respectively fixed on the main bodies of the pedestrian railings on both sides of the bridge expansion joint. One end of the fifth connecting rod 203 is slidably connected to the third connecting rod 201 and can slide along the length direction of the connecting rod; the other end of the fifth connecting rod 203 is hinged to the fourth connecting rod 202.
[0049] To prevent the connecting rod from sliding out, one end of the fifth connecting rod 203 slides into the interior of the third connecting rod 201, and one end of the fifth connecting rod 203 is provided with an enlarged head 204 adapted to the interior of the third connecting rod 201 to prevent one end of the fifth connecting rod 203 from sliding out of the third connecting rod 201. The setting method of the enlarged head 204 is an existing conventional solution, such as setting an enlarged head 204 at the end of the fifth connecting rod 203 and an enlarged hole in the interior of the third connecting rod 201, and the enlarged head 204 can only slide within the enlarged head 204.
[0050] To achieve hinged connection, the adjacent ends of the other end of the fifth connecting rod 203 and the fourth connecting rod 202 are both provided with second hinge heads, and both of the second hinge heads are provided with second through holes 205 for bolts to pass through.
[0051] To enable the two ends of the connecting rod to expand and contract evenly and adapt to a larger range of expansion and contraction, a second telescopic node is provided at the hinged position, which is set as follows: the second through hole 205 is a second long hole, the second long hole is arranged along the length direction of the connecting rod, and the bolt can move along the length direction of the second long hole. In this solution, two telescopic nodes and a hinged node are also provided on the connecting rod of the body connecting component 2. One of the telescopic nodes is located at the hinged node, which is realized by the bolt and the second long hole. It can not only achieve hinging, but also move along the length direction of the second long hole.
[0052] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A pedestrian railing telescopic device for bridge expansion joints, characterized in that, Comprising: A connecting rod, which connects the pedestrian railings on both sides of the bridge expansion joint. The connecting rod is parallel to the bridge, and the middle part of the connecting rod is provided with a telescopic joint and a hinge joint; The connecting rod changes its own length by the telescopic movement of the telescopic joint; The connecting rod changes the included angle between the connecting rod parts at both ends of the hinge joint by the rotation of the hinge joint. The rotation direction is in the vertical plane and rotates within the plane parallel to the pedestrian railing.
2. The pedestrian railing telescopic device for bridge expansion joints according to claim 1, characterized in that, An armrest connection assembly (1) is connected to the armrest rod of the pedestrian railing, and a body connection assembly (2) is connected to the main body of the pedestrian railing. Both the armrest connection assembly and the body connection assembly include connecting rods.
3. The pedestrian railing telescopic device for bridge expansion joints according to claim 2, characterized in that, The connecting rod in the armrest connection assembly includes a first connecting rod (101) and a second connecting rod (102) respectively arranged at both ends. The first connecting rod (101) and the second connecting rod (102) are respectively slidably sleeved on the armrest rod, and the adjacent ends of the first connecting rod (101) and the second connecting rod (102) are hinged.
4. The pedestrian railing telescopic device for bridge expansion joints according to claim 3, characterized in that, The first connecting rod (101) and the second connecting rod (102) are respectively provided with a matching screw (103) and a first long hole (104) between them and the respective armrests. The first long hole (104) is arranged along the length direction of the connecting rod, and the screw (103) is connected to the first long hole (104) and can move along the length direction of the first long hole (104).
5. The pedestrian railing telescopic device for bridge expansion joints according to claim 3, characterized in that, Both ends of the adjacent parts of the first connecting rod (101) and the second connecting rod (102) are provided with first hinge heads, and both of the first hinge heads are provided with first through holes for bolts to pass through.
6. The pedestrian railing telescopic device for bridge expansion joints according to claim 2, characterized in that, A plurality of body connection assemblies (2) are evenly distributed in the height direction of the main body of the pedestrian railing.
7. A pedestrian railing telescopic device for bridge expansion joints according to claim 6, characterized in that, The connecting rod in the body connection assembly (2) includes a third connecting rod (201), a fourth connecting rod (202) and a fifth connecting rod (203). The third connecting rod (201) and the fourth connecting rod (202) are respectively fixed on the main bodies of the pedestrian railings on both sides of the bridge expansion joint. One end of the fifth connecting rod (203) is slidably connected to the third connecting rod (201) and can slide along the length direction of the connecting rod; the other end of the fifth connecting rod (203) is hinged to the fourth connecting rod (202).
8. The pedestrian railing telescopic device for bridge expansion joints according to claim 7, characterized in that One end of the fifth connecting rod (203) slides into the inside of the third connecting rod (201), and one end of the fifth connecting rod (203) is provided with an enlarged head (204) adapted to the inside of the third connecting rod (201) to prevent one end of the fifth connecting rod (203) from sliding out of the third connecting rod (201).
9. The pedestrian railing telescopic device for bridge expansion joints according to claim 7, characterized in that, Both ends of the adjacent parts of the other end of the fifth connecting rod (203) and the fourth connecting rod (202) are provided with second hinge heads, and both of the second hinge heads are provided with second through holes (205) for bolts to pass through.
10. The pedestrian railing telescopic device for bridge expansion joints according to claim 9, characterized in that, The second through hole (205) is a second long hole, the second long hole is arranged along the length direction of the connecting rod, and the bolt can move along the length direction of the second long hole.