Modular easy-to-maintain telescopic device
Through the combined design of Xiaobawang middle beam steel, hump rubber strip and horn type support box, the problem of the traditional module easy-to-maintenance telescopic device cannot be replaced when the parts of the traditional module easy-to-maintenance telescopic device are damaged, and convenient maintenance and self-cleaning functions are achieved, which improves the service life and load-bearing capacity of the bridge.
Patent Information
- Application Number
- CN202510794901.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-14
- Publication Date
- 2025-08-08
AI Technical Summary
The traditional module easy-to-maintenance telescopic device cannot be replaced in time when parts are damaged during operation, and does not have the function of self-cleaning water stop, which affects the service life and efficiency of the equipment.
The combination design of Xiaobawang middle beam steel, camel rubber strips and trumpet type support box is adopted. Through factory-based zero-setting, the parts are easily replaced, and the camel rubber strips are installed between the middle beam steel and the side beam to provide a self-cleaning water stop effect.
It realizes convenient replacement of telescopic device components, reduces maintenance workload, improves impact shear performance and horizontal load bearing capacity, and extends service life.
Smart Images
Figure CN120443544A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of telescopic devices, in particular to a modular and easy-to-maintain telescopic device. Background Art
[0002] With economic development and the continuous advancement of transportation infrastructure construction, the scale and number of bridge construction are increasing, and the performance requirements for bridge expansion devices are also becoming increasingly higher. The continuous emergence of long-span bridges and heavy-load traffic bridges requires expansion devices that can adapt to larger displacements and loads. The D240 expansion device is designed with an expansion range that can meet the displacement requirements of long-span bridges. Modern bridge construction focuses not only on structural safety and durability, but also on construction efficiency and ease of subsequent maintenance. Traditional expansion devices often require a lot of manpower, material resources, and time for maintenance. Modular, easy-to-maintain expansion devices have emerged to meet the needs of efficient bridge construction and maintenance.
[0003] The development of the transportation industry has led to a continuous increase in vehicle loads, especially the increase in heavy-duty trucks and large buses, which has put forward higher requirements on the load-bearing capacity of bridge expansion joints. The D240 expansion joint adopts hot-rolled integrally formed special-shaped steel, combined with side beams, middle beams, cross beams and linkage mechanisms to form a heavy-duty structural design, which greatly improves the load-bearing capacity and stability of use. It can withstand large loads and displacements and is suitable for road bridges with a large number of heavy-duty vehicles. Traditional modular and easy-to-maintain expansion joints have some problems during operation, such as the elastic support elements and displacement boxes are easily deformed under vehicle impact loads, which reduces the product's resistance to punching and shearing, and its service life is affected to a certain extent. At the same time, when the parts used on the expansion joint are damaged, they cannot be replaced in time, which extends the service life of the equipment. In addition, it does not have the function of self-cleaning waterstop, which reduces the efficiency of equipment use. Summary of the Invention
[0004] In order to make up for the above shortcomings, the present invention provides a modular easy-to-maintain telescopic device, which aims to improve the problem that the traditional modular easy-to-maintain telescopic device in the prior art cannot be replaced in time when the parts used on the telescopic device are damaged during operation, resulting in extended equipment use time and lack of self-cleaning waterstop function.
[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a modular easy-to-maintain telescopic device, including a Xiaobawang center beam steel, the left and right sides of the Xiaobawang center beam steel are fixedly connected with side beam steel, the middle parts of the two side beam steels on the opposite sides are fixedly connected with a detachable support box cover plate, the middle parts of the top ends of the detachable support box cover plates are fixedly connected with a long plate, the two opposite sides of the detachable support box cover plates are snap-connected with a trumpet-shaped side plate, a plurality of expansion joints are installed between the adjacent side beam steels and the Xiaobawang center beam steel, a support box body is installed on the inner side of the detachable support box cover plate, one side of the support box body is slidably connected with a sliding support, a shear spring is arranged on the top of the sliding support, a support beam is installed between the two adjacent shear springs, a shear spring pressure plate is arranged on the left side of the top of the support beam, and a long groove plate with a fixing bolt is arranged on the top of the shear spring pressure plate.
[0006] As a further description of the above technical solution: The upper and lower sides of the detachable support box cover are both threadedly connected with two welding nails.
[0007] As a further description of the above technical solution: The middle parts of the left and right sides of the detachable support box cover are both threadedly connected with welding nails one.
[0008] As a further description of the above technical solution: A reserved hole is provided in the middle of the top of the long plate, and a supporting box cover fixing bolt 1 is threadedly connected to the top of the detachable supporting box cover near the edge on the right side.
[0009] As a further description of the above technical solution: The two detachable support box cover plates are fixedly connected at the same horizontal height.
[0010] As a further description of the above technical solution: The top of the detachable support box cover on the left side is threadedly connected with a support box cover fixing bolt 2 near the edge.
[0011] The present invention has the following beneficial effects: The present invention discloses a modular, easy-to-maintain telescopic device, comprising a Subor center beam steel, a hump rubber strip, and a trumpet-shaped support box. The hump rubber strip is connected between the center beam steel and the side beams. The center beam is connected to the support box via a bottom support beam, and the side beams are supported on the side panels of the support box. The device is assembled in a factory-assembled manner, allowing for convenient and timely replacement of worn components on the telescopic device, minimizing the impact of maintenance work on public transportation. The hump rubber strip also functions as a self-cleaning waterstop, reducing daily maintenance workload. The cross-sectional structural design of the Subor center beam steel further facilitates the dispersive transfer of vehicle dynamic loads to the support beam, significantly improving the shear resistance of the center steel beam. The trumpet-shaped support box not only improves the vertical shear resistance of the support box cover, but also increases its horizontal load-bearing capacity. The hemming design of the cover enhances the waterproofing of the support box, extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 A three-dimensional diagram of the modular, easy-to-maintain telescopic device proposed in the present invention; Figure 2 A bottom view of the modular, easy-to-maintain telescopic device proposed by the present invention; Figure 3 A side view of the modular, easy-to-maintain telescopic device proposed by the present invention; Figure 4 This is a structural diagram of the modular easy-to-maintain telescopic device proposed in the present invention; Figure 5 This is a structural diagram of the modular easy-to-maintain telescopic device proposed in the present invention; Figure 6 This is a cross-sectional view of the modular, easy-to-maintain telescopic device proposed by the present invention.
[0013] Legend: 1. Removable support box cover; 2. One support box cover fixing bolt; 3. Reserved hole; 4. Long plate; 5. Two support box cover fixing bolts; 6. One weld nail; 7. Trumpet-shaped side plate; 8. Side beam steel; 9. Subor middle beam steel; 10. Two weld nails; 11. Support box body; 12. Sliding support; 13. Shear spring; 14. Support beam; 15. Shear spring pressure plate; 16. Long slot plate with fixing bolts; 17. Expansion joint. DETAILED DESCRIPTION
[0014] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0015] Please see the attached Figure 1 -Attached Figure 3 , an embodiment provided by the present invention: a modular easy-to-maintain telescopic device, including a Xiaobawang middle beam steel 9, the left and right sides of the Xiaobawang middle beam steel 9 are fixedly connected with side beam steel 8, the middle parts of the two side beam steels 8 on the opposite side are fixedly connected with a detachable support box cover 1, the middle parts of the tops of the detachable support box cover 1 are fixedly connected with long plates 4, the top of the left detachable support box cover 1 is threadedly connected to the support box cover fixing bolts 2 5 near the edge, and the top of the right detachable support box cover 1 is threadedly connected to the support box cover fixing bolts 1 2 near the edge. The flared side panels 7 are connected to the opposite sides of the disassembly support box cover 1, and a plurality of expansion joints 17 are installed between the adjacent side beam steel 8 and the Subor middle beam steel 9. A support box body 11 is installed on the inner side of the detachable support box cover 1, and a sliding support 12 is slidably connected to one side of the support box body 11. A shear spring 13 is provided on the top of the sliding support 12, and a support beam 14 is installed between the two adjacent shear springs 13. A shear spring pressure plate 15 is provided on the left side of the top of the support beam 14, and a fixing bolt long slot plate 16 is provided on the top of the shear spring pressure plate 15; Specifically, the side beam steel 8 is fixedly connected to the left and right sides of the Xiaobawang center beam steel 9, which enhances the overall structural strength of the Xiaobawang center beam steel 9 and provides a stable support platform. The side beam steel 8 can effectively disperse the external force it bears, and the detachable support box cover 1 is fixed to the side beam steel 8 through a connection method. This connection method not only ensures the stability of the cover during normal use, but also can be easily disassembled when needed. The fixed connection between the long plate 4 and the detachable support box cover 1 enhances the cover's anti-deformation ability. The long plate 4 can share part of the stress to prevent bending and deformation. The side beam steel 8 and the Xiaobawang center beam steel 9 serve as key load-bearing and structural supports. Multiple expansion joints 17 are installed between adjacent positions of the side beam steel 8 and the Xiaobawang center beam steel 9. These expansion joints 17 are like bridge structures, which can allow relative displacement between structural components to a certain extent, effectively avoiding excessive stress caused by natural phenomena of thermal expansion and contraction or external loads, thereby preventing deformation and damage of cracks in the bridge structure, and greatly extending the service life of the bridge.
[0016] Please see the attached Figure 4 -Attached Figure 6 , a reserved hole 3 is opened in the middle of the top of the long plate 4, and the upper and lower sides of the detachable support box cover 1 are threadedly connected with a welding nail 10, and the two detachable support box cover plates 1 are fixedly connected at the same horizontal height, and the middle of the left and right sides of the detachable support box cover plate 1 are threadedly connected with a welding nail 6; Specifically, a reserved hole 3 is opened in the middle of the top of the long plate 4. The function upgrade of the reserved hole 3 provides flexibility. The welding nail 2 10 is tightly connected together by cooperating with the threads of the detachable support box cover plate 1 and the side beam steel 8. When the welding nail 2 10 is tightened, a strong pre-tightening force is generated, which is tighter, thereby improving the stability and bearing capacity of the entire supporting structure.
[0017] Working principle: First, connect the Xiaobawang middle beam steel 9 with the side beam steel 8. At this time, a long plate 4 is connected to the detachable support box cover 1, and the corresponding support box cover fixing bolt 2 is used to fix it to the external objects, and then two side beam steels 8 are placed in the middle. After that, the expansion joint 17 is connected to the Xiaobawang middle beam steel 9 and the side beam steel 8, which can allow relative displacement between structural components to a certain extent, effectively avoid excessive stress caused by the natural phenomenon of thermal expansion and contraction and external loads, thereby increasing the expansion range. , and finally cooperate with the trumpet-shaped side plate 7 on the Xiaobawang middle beam steel 9, and finally twist and limit the corresponding welding nail 1 6 and welding nail 2 10. Therefore, when the parts used on the telescopic device are worn or damaged, it is convenient to replace the parts that need to be replaced, thereby improving the effect of easy maintenance of the device. At the same time, it has the function of a self-cleaning water stop to meet the daily use needs of operators. The cross-sectional structural design of the Xiaobawang middle beam steel is more conducive to dispersing the driving dynamic load to the support beam, greatly improving the shear resistance of the middle steel beam. The trumpet-shaped support box not only improves the vertical shear resistance of the support box cover, but also improves the bearing capacity of the horizontal load. At the same time, the edge design of the cover improves the waterproof ability of the support box and extends its service life.
[0018] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A modular easy-to-maintain telescopic device, comprising a Subor middle beam steel (9), characterized in that: The left and right sides of the Xiaobawang middle beam steel (9) are fixedly connected with side beam steel (8), the middle parts of the two side beam steels (8) on the side away from each other are fixedly connected with a detachable support box cover (1), the middle parts of the top ends of the detachable support box cover (1) are fixedly connected with a long plate (4), the side away from each other of the two detachable support box cover (1) are snap-fitted with a trumpet-shaped side plate (7), and a plurality of expansion joints (17) are installed between the adjacent side beam steels (8) and the Xiaobawang middle beam steel (9) A support box body (11) is installed on the inner side of the detachable support box cover (1), a sliding support (12) is slidably connected to one side of the support box body (11), a shear spring (13) is provided on the top of the sliding support (12), a support beam (14) is installed between two adjacent shear springs (13), a shear spring pressure plate (15) is provided on the left side of the top of the support beam (14), and a fixing bolt long slot plate (16) is provided on the top of the shear spring pressure plate (15).
2. The modular easy-maintenance telescopic device according to claim 1, characterized in that: The upper and lower sides of the detachable support box cover (1) are both threadedly connected with two welding nails (10).
3. The modular easy-maintenance telescopic device according to claim 1, characterized in that: The middle portions of the left and right sides of the detachable support box cover (1) are both threadedly connected with a welding nail (6).
4. The modular, easy-to-maintain telescopic device according to claim 1, characterized in that: A reserved hole (3) is provided in the middle of the top of the long plate (4), and a support box cover fixing bolt (2) is threadedly connected to the top of the detachable support box cover (1) on the right side near the edge.
5. The modular easy-maintenance telescopic device according to claim 1, characterized in that: The two detachable support box cover plates (1) are fixedly connected at the same horizontal height.
6. The modular easy-maintenance telescopic device according to claim 1, characterized in that: The top of the detachable support box cover (1) on the left side is threadedly connected to the support box cover fixing bolt 2 (5) near the edge.