An assembled railing for a steel-framed bridge
By using a modular railing design with connecting and support devices, the problem of difficult disassembly of traditional steel bridge railings has been solved, enabling convenient maintenance and replacement, and improving the stability and impact resistance of the bridge.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GREAT WALL MARINE EQUIP (JIANGSU) CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-07-24
AI Technical Summary
The traditional welding method for fixing steel bridge railings makes disassembly difficult and damages intact components, making efficient repair and replacement difficult.
The railing adopts an assembly-type design, using connecting and support devices to achieve detachable connection between the uprights and crossbars. Through structures such as fixing blocks, slots, plates, and support plates, stability and easy disassembly are ensured.
This allows for easy disassembly and replacement of the railings, reducing damage to intact components and improving the stability of the bridge and its ability to withstand lateral impacts.
Smart Images

Figure CN224548953U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of steel frame bridge accessories, specifically to an assembled railing for steel frame bridges. Background Technology
[0002] Steel bridge railings are installed on both sides of a steel bridge to improve its safety and prevent pedestrians, vehicles, or objects from falling. They are usually made of steel and have high strength, durability, and impact resistance.
[0003] Traditional steel bridge railings are often fixed to the uprights on both sides by welding. This fixing method is irreversible. Once a horizontal bar in a certain position of the bridge fails and needs to be disassembled, repaired or replaced, it is often necessary to cut open the corresponding position, which is difficult to disassemble and causes unnecessary damage to intact parts.
[0004] Therefore, there is an urgent need to provide a new solution to address the defects and shortcomings of the existing technologies. Utility Model Content
[0005] In order to overcome the defects and shortcomings of the existing technology, this utility model proposes an assembled railing for steel frame bridges.
[0006] The technical solution adopted by this utility model to solve its technical problem is: An assembled railing for steel frame bridges includes uprights with bases installed at the bottom of the uprights. The railing is characterized in that: several sets of evenly distributed horizontal bars are installed between adjacent uprights via a connecting device, and a support device is also provided on one side of each upright.
[0007] As a further preferred embodiment of the present invention, the connecting device includes fixing blocks fixed to both ends of the crossbar, and several evenly distributed fixing slots are respectively opened on both sides of the upright, and the fixing blocks can be inserted into the fixing slots and engaged with them.
[0008] As a further preferred embodiment of this utility model, the fixing block has slots on its front and rear sides respectively, and the card plates are fixed to the front and rear sides of the upright by fixing members respectively. The two ends of each card plate can be inserted into the slots of the fixing blocks on both sides of the upright and engage with them.
[0009] As a further preferred embodiment of this utility model, a washer is also provided between the card plate and the fixing member.
[0010] As a further preferred embodiment of this utility model, a reinforcing plate is also provided between the inner wall of the card plate and the outer wall of the upright.
[0011] As a further preferred embodiment of this utility model, a plurality of positioning blocks that abut against the card plate are fixed on the front and rear sides of the upright.
[0012] As a further preferred embodiment of the present invention, the support device includes a support plate, the top of which is movably connected to the upright, and the bottom of which is fixedly connected to the base.
[0013] As a further preferred embodiment of this utility model, the upright is fixed with fixing columns on both sides, and the top two sides of the support plate are respectively fitted around the outer periphery of the fixing columns.
[0014] As a further preferred embodiment of this utility model, a reinforcing sleeve is also provided around the outer periphery of the fixing column.
[0015] As a further preferred embodiment of the present invention, the base has a groove inside, the bottom of the support plate can be inserted into the groove and engaged with it, the bottom of the support plate has a connecting hole, the base has a fixing hole inside, and the connector passes through the connecting hole and is inserted into the fixing hole inside the base.
[0016] Compared with the prior art, the beneficial effects achieved by this utility model include at least the following: 1) This utility model provides an assembled railing for steel frame bridges. Several sets of evenly distributed crossbars are installed between adjacent uprights through a connecting device. When a crossbar in a certain position of the bridge needs to be disassembled for maintenance or replacement, the crossbar at the current position can be installed and removed through the connecting device. This facilitates replacement without damaging intact parts, makes full use of the parts, and reduces the cost of use.
[0017] 2) This utility model provides an assembled railing for steel frame bridges. By providing a support device on one side of the upright, the railing's support stability is improved, while its ability to withstand lateral impact forces on the bridge body is enhanced, reducing the possibility of the railing swaying or tilting unexpectedly. Attached Figure Description
[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0019] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural schematic diagram of the upright position of this utility model; Figure 3 This is a utility model Figure 2 A schematic diagram of the structure of a partial component disassembly device; Figure 4 This is a structural schematic diagram of the support device of this utility model.
[0020] Legend: 1. Upright pole; 2. Base; 3. Horizontal bar; 4. Connecting device; 41. Fixing block; 42. Slot; 43. Plate; 44. Fixing component; 45. Fixing groove; 46. Washer; 47. Reinforcing plate; 48. Positioning block; 5. Support device; 51. Fixing column; 52. Support plate; 53. Reinforcing sleeve; 54. Connecting component; 55. Connecting hole. Detailed Implementation
[0021] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.
[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0023] like Figure 1-4 The image shown is an assembled railing for a steel frame bridge provided in the first embodiment of this utility model, such as... Figure 1 As shown, the railing includes uprights 1, with a base 2 installed at the bottom of each upright. Unlike existing fixed connection methods, several sets of evenly distributed crossbars 3 are installed between adjacent uprights 1 via a connecting device 4. A support device 5 is also provided on one side of each upright. By installing several sets of evenly distributed crossbars 3 between adjacent uprights 1 via the connecting device 4, when a crossbar 3 in a certain position of the bridge needs to be disassembled for maintenance or replacement, the crossbar 3 at that position can be installed and removed through the connecting device 4. This facilitates replacement without damaging intact components, allowing for full utilization of components and reducing operating costs. Furthermore, by providing a support device 5 on one side of each upright, the stability of the railing support is improved, and its ability to withstand lateral impact forces on the bridge is enhanced, reducing the possibility of unexpected swaying and tilting of the railing. like Figure 2-3 As shown, the connecting device 4 in this embodiment includes fixing blocks 41 fixed to both ends of the crossbar 3. Several evenly distributed fixing slots 45 are respectively opened on both sides of the upright 1. The fixing blocks 41 can be inserted into the fixing slots 45 and engaged with them. By inserting the fixing blocks 41 fixedly connected to the ends of the crossbar 3 into the fixing slots 45 and engaging with them, the crossbar 3 is fixedly connected between adjacent uprights 1.
[0024] The front and rear sides of the fixing block 41 are respectively provided with slots 42, and the card plate 43 is fixed to the front and rear sides of the upright 1 by the fixing member 44. The two ends of the card plate 43 on each side can be inserted into the slots 42 of the fixing block 41 on both sides of the upright 1 and engage with it, thereby achieving a reinforcement effect for the crossbar 3 inserted into the upright 1 and further improving the stability of the fixed connection between the crossbar 3 and the adjacent upright 1.
[0025] The fastener 44 can be a bolt or screw commonly used in the mechanical field. To improve the fixing stability and achieve good contact, a washer 46 is also provided between the clamping plate 43 and the fastener 44. The washer 46 makes the connection between the clamping plate 43 and the fastener 44 stable, reduces the possibility of the fastener 44 rotating and loosening, and ensures the stability of the connection.
[0026] To achieve the positioning of the clamping plate 43 on the front and rear sides of the upright 1, several positioning blocks 48 that abut against the clamping plate 43 are fixed on the front and rear sides of the upright 1. The clamping plate 43 is simultaneously pressed by multiple positioning blocks 48 through the multiple positioning blocks 48, thereby achieving a stable limiting effect of the clamping plate 43 on the front and rear sides of the upright 1, ensuring the stability of the clamping plate 43 while facilitating subsequent fixing and assembly.
[0027] To further improve the connection strength and stability, a reinforcing plate 47 is provided between the inner wall of the card plate 43 and the outer wall of the upright 1. The reinforcing plate 47 further improves the contact stability between the card plate 43 and the upright 1. At the same time, when the fastener 44 is inserted and fixed, the reinforcing plate 47 further increases the connection strength, ensuring the stable assembly of the railing.
[0028] like Figure 4 As shown, the support device 5 in this embodiment includes a support plate 52. The top of the support plate 52 is movably connected to the upright 1, and the bottom of the support plate 52 is fixedly connected to the base 2. Specifically, The top connection method of the support plate 52 is as follows: the two sides of the upright 1 are fixed with fixed columns 51, and the top two sides of the support plate 52 are respectively wrapped around the outer periphery of the fixed columns 51 to ensure stable connection. At the same time, the outer periphery of the fixed columns 51 is also fitted with a reinforcing sleeve 53. The reinforcing sleeve 53 is preferably made of elastic material such as rubber, so as to achieve a tight fit and also to absorb impact and dampen vibration to a certain extent.
[0029] The bottom connection method of the support plate 52 is as follows: the base 2 has a groove inside, the bottom of the support plate 52 can be inserted into the groove and engaged with it, the bottom of the support plate 52 has a connecting hole 55, the base 2 has a fixing hole inside, the connector 54 passes through the connecting hole 55 and is inserted into the fixing hole inside the base 2 to achieve the fixed connection of the bottom of the support plate 52 in the groove inside the base 2. The connector 54 can be a bolt or screw or other fastener commonly used in the mechanical field.
[0030] The specific working process of this embodiment is as follows: When installing and fixing the crossbar 3 between adjacent uprights 1, the fixing block 41 fixed at the end of the crossbar 3 is inserted into the fixing groove 45 opened on both sides of the upright 1. Then, the two ends of the front and rear clamping plates 43 are respectively inserted into the grooves 42 of the fixing blocks 41 on both sides of the upright 1. The fixing piece 44 passes through the surface of the clamping plate 43 and finally achieves a threaded connection with the inside of the upright 1, so that the clamping plate 43 is fixed to the front and rear sides of the upright 1. Finally, the base 2 is installed and fixed to the surface of the steel frame bridge. When a certain crossbar position of the bridge body needs to be disassembled for maintenance and replacement, the crossbar at the current position can be installed and removed through the connecting device. This facilitates replacement without damaging intact parts, makes full use of the parts, and reduces the cost of use.
[0031] When installing the fixed support device 5 on one side of the upright 1, the top two sides of the support plate 52 are respectively wrapped around the outer periphery of the fixed posts 51 fixed on both sides of the upright 1, and the bottom of the support plate 52 is inserted into the groove inside the base 2. The connector 54 passes through the connecting hole 55 and is inserted into the fixing hole inside the base 2 to achieve the fixed connection of the bottom of the support plate 52 in the groove inside the base 2. By also setting a support device on one side of the upright, the stability of the railing support is improved, and the ability to withstand the lateral impact force of the bridge body is improved, reducing the possibility of the railing swaying and tilting unexpectedly.
[0032] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. An assembled railing for a steel frame bridge, comprising uprights (1) with a base (2) mounted on the bottom of the uprights (1), characterized in that: Several sets of evenly distributed crossbars (3) are installed between adjacent uprights (1) via connecting devices (4), and a support device (5) is also provided on one side of the uprights (1).
2. The assembled railing for steel frame bridges according to claim 1, characterized in that: The connecting device (4) includes fixing blocks (41) fixed at both ends of the crossbar (3). Several evenly distributed fixing slots (45) are opened on both sides of the upright (1). The fixing blocks (41) can be inserted into the fixing slots (45) and engaged with them.
3. The assembled railing for a steel frame bridge according to claim 2, characterized in that: The fixing block (41) has slots (42) on its front and rear sides respectively. The card plate (43) is fixed to the front and rear sides of the pole (1) by the fixing member (44). The two ends of the card plate (43) on each side can be inserted into the slots (42) of the fixing block (41) on both sides of the pole (1) and engage with it.
4. The assembled railing for a steel frame bridge according to claim 3, characterized in that: A washer (46) is also provided between the card plate (43) and the fastener (44).
5. The assembled railing for a steel frame bridge according to claim 3, characterized in that: A reinforcing plate (47) is also provided between the inner wall of the card plate (43) and the outer wall of the upright (1).
6. The assembled railing for a steel frame bridge according to claim 3, characterized in that: The front and rear sides of the upright (1) are respectively fixed with a number of positioning blocks (48) that abut against the card plate (43).
7. The assembled railing for a steel frame bridge according to claim 1, characterized in that: The support device (5) includes a support plate (52), the top of which is movably connected to the upright (1), and the bottom of which is fixedly connected to the base (2).
8. The assembled railing for a steel frame bridge according to claim 7, characterized in that: The upright (1) is fixed with fixed columns (51) on both sides, and the top two sides of the support plate (52) are respectively wrapped around the outer periphery of the fixed columns (51).
9. An assembled railing for a steel frame bridge according to claim 8, characterized in that: The outer periphery of the fixed column (51) is also fitted with a reinforcing sleeve (53).
10. An assembled railing for a steel frame bridge according to claim 7, characterized in that: The base (2) has a groove inside, and the bottom of the support plate (52) can be inserted into the groove and engaged with it. The bottom of the support plate (52) has a connecting hole (55), and the base (2) has a fixing hole inside. The connector (54) passes through the connecting hole (55) and is inserted into the fixing hole inside the base (2).