Jacking device for replacing bridge support
By using two sets of hydraulic lifting cylinders to assist hydraulic column support in the bridge bearing replacement lifting device, the problem of insufficient jack load-bearing capacity was solved, achieving adaptive support and safety improvement for different bridges, and reducing the risk of equipment damage and structural deformation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-07
- Publication Date
- 2026-04-07
AI Technical Summary
When using existing jacking devices to lift different bridges, the load-bearing capacity of the jacks is often less than the actual load of the bridge superstructure, leading to jack overload damage, increased construction safety risks, and reduced overall safety.
Two sets of hydraulic lifting cylinders are used to connect to the top plate and auxiliary hydraulic columns for support, which increases the load-bearing capacity. The load is distributed by the coordinated work of the hydraulic cylinders, providing additional lateral support and preventing the hydraulic cylinders from overturning. Stable connection is achieved through limit switches and bolt fixing.
It improves the load-bearing capacity of hydraulic columns, adapts to the load requirements of different bridges, reduces the risk of equipment damage, lowers the risk of cracks and deformation in bridge structures during the jacking process, and improves overall safety.
Smart Images
Figure CN224092330U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to jacking device technical field especially relates to bridge support replacement jacking device. BACKGROUND
[0002] Bridge is the structure of crossing obstacles, used for supporting and guiding traffic or other loads from one end to the other, the design and construction of bridge is an important part of civil engineering, its function and form are various, bridge support replacement jacking device is a special equipment for bridge maintenance and repair, mainly used for lifting the bridge superstructure through jacking technology without removing the bridge structure, in order to replace the damaged or aged support, bridge support replacement jacking device plays an important role in bridge maintenance, through advanced hydraulic and synchronous control technology, the safety and stability of bridge structure can be effectively guaranteed.
[0003] At the same time, the existing jacking device usually needs to jacking work for different bridges, which is easy to make the carrying capacity of the jack less than the actual load of the bridge superstructure, resulting in overload damage of the jack and unable to work normally, increasing the construction safety risk and reducing the overall safety. UTILITY MODEL CONTENTS
[0004] In order to overcome the problem that the existing jacking device usually needs to jacking work for different bridges, which is easy to make the carrying capacity of the jack less than the actual load of the bridge superstructure, resulting in overload damage of the jack and unable to work normally, increasing the construction safety risk and reducing the overall safety, the utility model provides bridge support replacement jacking device.
[0005] The technical scheme is as follows: bridge support replacement jacking device, including hydraulic column and hydraulic jacking cylinder, the outer side of the hydraulic column is provided with two groups of hydraulic jacking cylinders, further including telescopic rod, top plate, filling plate, sleeve plate, link plate and bearing plate, the lower end of the hydraulic column is fixed with the bearing plate, the lower end of the two groups of hydraulic jacking cylinders is fixed with the bearing plate, the outer wall of the bearing plate is welded with the link plate, the inside of the bearing plate is provided with the connecting groove accommodating the link plate, the upper end of the hydraulic jacking cylinder is provided with the telescopic rod, the end of the telescopic rod away from the hydraulic jacking cylinder is fixed with the top plate.
[0006] Further, two groups of sleeve plates are welded on the upper end of the bearing plate below the top plate, two groups of movable plates are installed in the inside of the two groups of sleeve plates, and the movable plates are welded and fixed with the lower end of the top plate.
[0007] Further, two groups of limiting pins are installed in the inside of the bearing plate, the inside of the bearing plate and the bearing plate is provided with the connecting hole accommodating the limiting pin, and the bearing plate is inserted and fixed with the link plate through the two groups of limiting pins.
[0008] Further, the outer end of the sleeve plate is provided with two groups of bolts, and the inner part of the movable plate is provided with a plurality of groups of threaded holes for accommodating the bolts, and the movable plate is fixed with the sleeve plate through the two groups of bolts.
[0009] Further, the upper end of the top plate is provided with a filling plate, the inner corner of the filling plate is provided with a limiting column, the upper end of the top plate is provided with a positioning hole for accommodating the limiting column, and the filling plate is fixed through the limiting column and the positioning hole.
[0010] Further, the outer wall of the hydraulic column and the hydraulic jacking cylinder is fixed with a butt joint, and one end of the bearing plate is welded with a connecting rod.
[0011] Further, the upper end of the hydraulic column is fixed with a support plate, and the upper end of the support plate is provided with a connecting groove, and the inner part of the connecting groove is provided with a connecting hole.
[0012] Further, the outer wall of the hydraulic column is provided with two groups of pull rods, and the two groups of pull rods are fixed with the hydraulic column.
[0013] Beneficial effects are: the utility model discloses a two-group hydraulic jacking cylinder is connected top plate auxiliary hydraulic column and is supported, and the bearing capacity can adapt to the actual load of different bridges, enough supporting force is provided, the hydraulic column can be safely supported bridge superstructure, adapts to the load demand of different bridges, and through increasing auxiliary support, load can be dispersed, single hydraulic cylinder is avoided overload, and additional lateral support is provided for the hydraulic cylinder, prevents the hydraulic cylinder from overturning in the jacking process, reduces the risk of equipment damage, secondly, two-group hydraulic jacking cylinder auxiliary support effectively disperses load, reduces local stress concentration, reduces the risk that bridge structure appears crack or deformation in the jacking process, improves the overall safety. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is the bridge support replacement jacking device three-dimensional structure schematic view of the utility model;
[0015] Figure 2 It is the hydraulic jacking cylinder three-dimensional structure schematic view of the utility model;
[0016] Figure 3 It is the top plate three-dimensional structure schematic view of the utility model;
[0017] Figure 4 It is the sleeve plate three-dimensional structure schematic view of the utility model;
[0018] Figure 5 It is the support plate three-dimensional structure schematic view of the utility model.
[0019] In the drawing marks: 1, hydraulic column; 2, hydraulic jacking cylinder; 3, telescopic rod; 4, top plate; 5, filling plate; 6, limiting column; 7, cover plate; 8, bearing plate; 9, link plate; 10, connecting rod; 11, bolt; 12, limiting pin; 13, butt joint; 14, bearing plate; 15, pull rod; 16, support plate. DETAILED DESCRIPTION
[0020] The utility model will be specifically introduced below in combination with the drawings and specific embodiments.
[0021] A bridge is a structure that spans obstacles, usually a river, valley, road, railway, etc. to facilitate the passage of personnel, vehicles, etc. It is composed of an upper structure and a lower structure. The upper structure includes a bridge deck system, a main beam or a main arch ring, etc. and mainly bears the load of vehicles and pedestrians and transmits the load to the lower structure. The lower structure includes piers, abutments and foundations, etc. and its function is to support the upper structure and transmit its load to the foundation.
[0022] There are various types of bridges, which can be divided into beam bridges, arch bridges, rigid frame bridges, suspension bridges and combined system bridges according to the structural system. The beam bridge is the most common one, which has a simple structure and is easy to construct, mainly relying on the bending resistance of the beam to bear the load. The arch bridge utilizes the structural characteristics of the arch ring to transmit the load to the pier or abutment through the arch foot, with a beautiful appearance and large spanning capacity. The rigid frame bridge is a structure formed by rigidly connecting beams and columns, which has good integrity and can bear large loads. The suspension bridge mainly relies on the suspension cable to support the bridge deck, with large spanning capacity and beautiful appearance, etc. and is suitable for large-span bridges. The combined system bridge combines the above several structural forms together to meet different engineering requirements.
[0023] The construction of a bridge needs to consider many factors, including topography, geological conditions, hydrology and meteorology, traffic demand, economic budget, etc. During the design stage, engineers need to conduct detailed mechanical analysis of the bridge structure to ensure its safety and reliability. During the construction process, the quality needs to be strictly controlled, advanced construction techniques and equipment are adopted to ensure the construction precision and quality of the bridge. At the same time, the maintenance and management of the bridge are also very important, regular inspection and maintenance of the bridge are needed to discover and handle potential safety hazards in time, which can prolong the service life of the bridge and ensure its normal operation.
[0024] With the continuous progress of technology, bridge technology is also developing. The application of new materials such as high-performance concrete, high-strength steel, and composite materials has improved the carrying capacity and durability of bridges; new construction techniques such as prefabricated assembly construction, large floating crane construction, and deep water foundation construction have improved construction efficiency and quality; the application of intelligent monitoring technology can monitor the structural state and operation of the bridge in real time, providing scientific basis for the safety management of the bridge. The development of these technologies makes the bridge better adapt to the needs of modern society, providing strong support for people's travel and economic development.
[0025] Bridge bearing replacement jacking device is a device system used in the process of bridge bearing replacement, which lifts the bridge beam to achieve the removal and installation of the bearing. It is usually composed of several key components, including hydraulic jacks, control systems, support devices, and synchronous monitoring systems. These components work together to ensure that the bridge beam can be safely and smoothly jacked and supported during the replacement of the bearing. Hydraulic jacks are the core components of the jacking device, responsible for providing the jacking force required. According to the structure and weight of the bridge, the tonnage and number of jacks will vary. Jacks are usually installed near the bridge bearing and provide stable jacking force through the hydraulic system to gradually lift the beam to the desired height to remove the old bearing and install the new bearing. The control system is used to accurately control the jacking speed and height of the jacks, ensuring the synchronization and stability of the jacking process. It can monitor the jacking state of each jack in real time through sensors and adjust the jacking parameters according to the feedback information to avoid deformation or damage of the beam caused by uneven jacking.
[0026] The role of the support device is to provide temporary support for the beam during the jacking process to ensure the stability of the beam during jacking and bearing replacement. These support devices are usually made of high-strength steel and can withstand the weight of the beam and work with the jacks during the jacking process to prevent the beam from lateral displacement or overturning. The synchronous monitoring system is an important part of the jacking device, which monitors various parameters such as jacking height, jacking force, and beam displacement in real time through sensors installed on the jacks and the beam. Once an abnormal situation is found, such as a large deviation in jacking height or uneven jacking force, the monitoring system will immediately issue an alarm and automatically adjust the jacking action of the jacks through the control system to ensure the safety and reliability of the entire jacking process.
[0027] Bridge bearing replacement jacking device has important significance in practical application. It not only can effectively reduce the impact of bridge maintenance on traffic, because the jacking device can complete the bearing replacement without dismantling the bridge structure, thereby avoiding large-scale traffic interruption; but also can improve the safety and efficiency of construction. Through precise jacking control and synchronous monitoring, construction personnel can more safely carry out bearing replacement operation, while reducing the risk caused by manual operation failure. In addition, this device can also prolong the service life of the bridge, because timely replacement of damaged bearings can avoid further damage to the bridge structure due to long-term uneven stress.
[0028] As shown in Figures 1-5 , the bridge bearing replacement jacking device comprises a hydraulic column 1 and a hydraulic jacking cylinder 2; two groups of hydraulic jacking cylinders 2 are installed on the outer side of the hydraulic column 1; it also comprises telescopic rods 3, top plates 4, filler plates 5, sleeve plates 7, adapter plates 9 and bearing plates 14; the lower end of the hydraulic column 1 is fixed with a bearing plate 14, the lower end of the two groups of hydraulic jacking cylinders 2 is fixed with a bearing plate 8, the outer wall of the bearing plate 8 is welded with an adapter plate 9, the inside of the bearing plate 14 is provided with a connecting groove accommodating the adapter plate 9, the upper end of the hydraulic jacking cylinder 2 is installed with a telescopic rod 3, the end of the telescopic rod 3 away from the hydraulic jacking cylinder 2 is fixed with a top plate 4, two groups of sleeve plates 7 are welded on the upper end of the bearing plate 8 below the top plate 4, the inside of the two groups of sleeve plates 7 is installed with a movable plate, and the movable plate is welded and fixed with the lower end of the top plate 4.
[0029] Please refer to Figures 2-4 , the inside of the bearing plate 14 is installed with two groups of limit pins 12, the inside of the bearing plate 14 and the bearing plate 8 is provided with a connecting hole accommodating the limit pin 12, the bearing plate 14 is inserted and fixed with the adapter plate 9 through the two groups of limit pins 12, the outer end of the sleeve plate 7 is provided with two groups of bolts 11, the inside of the movable plate is provided with a plurality of groups of threaded holes accommodating the bolts 11, and the movable plate is screwed and fixed with the sleeve plate 7 through the two groups of bolts 11, the upper end of the top plate 4 is provided with a filler plate 5, the inside of the filler plate 5 is provided with a limit column 6 at the corner, the upper end of the top plate 4 is provided with a positioning hole accommodating the limit column 6, and the filler plate 5 is inserted and fixed with the positioning hole through the limit column 6.
[0030] Please refer to Figures 3-5 , the outer wall of the hydraulic column 1 and the hydraulic jacking cylinder 2 is fixed with a butt joint 13, one end of the bearing plate 8 is welded with a connecting rod 10, the upper end of the hydraulic column 1 is fixed with a support plate 16, the upper end of the support plate 16 is provided with a connecting groove, the inside of the connecting groove is provided with an adapter hole, the outer wall of the hydraulic column 1 is provided with two groups of pull rods 15, and the two groups of pull rods 15 are welded and fixed with the hydraulic column 1.
[0031] When the bridge needs to be jacked up, the hydraulic column 1 connection support plate 16 is placed at the designated position of the bridge, and multiple groups can be added to the upper end of the support plate 16 according to the jacking requirement. After the hydraulic column 1 is initially installed, the transmission pipe is connected to the butt joint 13 at the outer end of the hydraulic column 1. Secondly, two groups of hydraulic jacking cylinders 2 are placed on both sides of the hydraulic column 1, and the limiting pin 12 is inserted into the bearing plate 14 and connected with the adapter plate 9 for insertion and fixation, so that the two groups of hydraulic jacking cylinders 2 and the hydraulic column 1 are kept on the same line segment at the upper end, avoiding deviation. After the two groups of hydraulic jacking cylinders 2 and the hydraulic column 1 are initially installed, the transmission pipe is connected to the butt joint 13 at the outer end of the two groups of hydraulic jacking cylinders 2 for easy transmission of hydraulic oil. The two groups of hydraulic jacking cylinders 2 are connected to the top plate 4 to assist the hydraulic column 1 to support, so that the bearing capacity can adapt to the actual load of different bridges, provide sufficient support force, and ensure that the hydraulic column 1 can safely support the superstructure of the bridge, adapt to the load requirement of different bridges. After the hydraulic jacking cylinders 2 are initially installed, the limiting column 6 is used to connect the filler plate 5 and the top plate 4 for insertion, and the stack is added according to the jacking requirement. After the hydraulic jacking cylinders 2 are lifted, the movable plate is lifted with the top plate 4. When the top plate 4 is lifted to the designated position, the bolt 11 is inserted into the sleeve plate 7 to fix the movable plate, thereby assisting the support of the top plate 4, and realizing the stable jacking work of the bridge.
[0032] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A bridge bearing replacement lifting device, characterized in that, It includes a hydraulic column (1) and a hydraulic lifting cylinder (2); two sets of hydraulic lifting cylinders (2) are installed on the outside of the hydraulic column (1); it also includes a telescopic rod (3), a top plate (4), a filling plate (5), a sleeve plate (7), a connecting plate (9) and a bearing plate (14); the lower end of the hydraulic column (1) is fixed with a bearing plate (14), the lower ends of the two sets of hydraulic lifting cylinders (2) are all fixed with a load-bearing plate (8), the outer wall of the load-bearing plate (8) is welded with a connecting plate (9), the inside of the bearing plate (14) is provided with a connecting groove to accommodate the connecting plate (9), the upper end of the hydraulic lifting cylinder (2) is installed with a telescopic rod (3), and the end of the telescopic rod (3) away from the hydraulic lifting cylinder (2) is fixed with a top plate (4).
2. The bridge bearing replacement lifting device according to claim 1, characterized in that, Two sets of sleeve plates (7) are welded to the bottom of the top plate (4) and above the load-bearing plate (8). Movable plates are installed inside the two sets of sleeve plates (7), and the movable plates are welded and fixed to the bottom of the top plate (4).
3. The bridge bearing replacement lifting device according to claim 1, characterized in that, The bearing plate (14) has two sets of limiting pins (12) installed inside. Both the bearing plate (14) and the load-bearing plate (8) have connection holes for accommodating the limiting pins (12). The bearing plate (14) is fixed to the connecting plate (9) by inserting the two sets of limiting pins (12).
4. The bridge bearing replacement lifting device according to claim 2, characterized in that, The outer end of the sleeve plate (7) is provided with two sets of bolts (11), and the inside of the movable plate is provided with several sets of threaded holes to accommodate the bolts (11). The movable plate is threadedly fixed to the sleeve plate (7) by the two sets of bolts (11).
5. The bridge bearing replacement lifting device according to claim 4, characterized in that, The top plate (4) is provided with a filling plate (5) at the upper end. A limiting post (6) is provided at the inner corner of the filling plate (5). A positioning hole for accommodating the limiting post (6) is opened at the upper end of the top plate (4). The filling plate (5) is fixed by inserting the limiting post (6) into the positioning hole.
6. The bridge bearing replacement lifting device according to claim 1, characterized in that, Both the hydraulic column (1) and the hydraulic lifting cylinder (2) have a butt joint (13) fixed on their outer walls, and a connecting rod (10) is welded to one end of the load-bearing plate (8).
7. The bridge bearing replacement lifting device according to claim 1, characterized in that, A support plate (16) is fixed at the upper end of the hydraulic column (1). A connecting groove is provided at the upper end of the support plate (16), and a connecting hole is provided inside the connecting groove.
8. The bridge bearing replacement lifting device according to claim 7, characterized in that, Two sets of tie rods (15) are provided on the outer wall of the hydraulic column (1), and the two sets of tie rods (15) are welded and fixed to the hydraulic column (1).