A vehicle-mounted bridge lifting device

Abstract

The utility model discloses a vehicle-mounted lifting bridge equipment, the utility model relates to bridge engineering and heavy machinery construction technical field, include: chassis, it is the basic structure of bearing equipment, and can be separated or combined with the car head, the carriage is set up on chassis, is used to accommodate hydraulic equipment, pressure plate is suspended fixed below chassis, is used for the pressure that hydraulic oil cylinder produced is dispersed to the ground, the stabilizer beam is located inside the carriage, can move up and down, is used for fixed hydraulic oil cylinder, equipment through the pressure -bearing structure of liftable self -adaptation different ground conditions, has simplified the field preparation work, its hydraulic system and the replaceable contact component effectively adapt to a variety of bridge bottom surface form, guarantee the stability and synchronization in the process of jacking, improve construction efficiency and adaptability greatly, provide a more convenient and reliable solution for bridge maintenance operation.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering and heavy machinery construction technology, specifically a vehicle-mounted bridge lifting device. Background Technology

[0002] Bridge lifting equipment is a construction device that uses a hydraulic system to lift the entire or partial bridge beam to carry out operations such as bearing replacement, bridge deck leveling, or pier reinforcement.

[0003] Traditional jacking equipment typically requires on-site construction of support platforms and complex foundation treatment, resulting in problems such as long preparation cycles, high requirements for construction sites, and low efficiency in equipment transfer and deployment.

[0004] The vehicle-mounted bridge lifting equipment provided in this design effectively solves the technical problems of slow deployment speed, poor site adaptability and complex synchronous control of lifting in the existing technology, and realizes the rapid mobility and efficient operation of the equipment. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a vehicle-mounted bridge lifting device, which solves the technical problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a vehicle-mounted bridge lifting device, comprising: The chassis is the basic structure that carries the equipment and can be separated from or combined with the cab. The carriage, mounted on the chassis, is used to house hydraulic equipment; A pressure plate, suspended and fixed below the chassis, is used to distribute the pressure generated by the hydraulic cylinder to the ground; The stabilizing beam, located inside the carriage, can move up and down and is used to fix the hydraulic cylinders. The stabilizer beam lifter is fixed at the bottom to the chassis and connected to the stabilizer beam at the top, and is used to adjust the distance between the pressure plate and the ground. At least one row of hydraulic cylinders has its bottom end fixed to the pressure plate and / or chassis, and its top end passes through the chassis and is fixedly connected to the stabilizing beam; The hydraulic pump provides power to all hydraulic cylinders; The controller can remotely control the lifting height of one or more hydraulic cylinders via wired or wireless means.

[0007] Preferably, the hydraulic cylinder can be a double-row hydraulic cylinder or a single-row hydraulic cylinder.

[0008] Preferably, the pressure plate is a thickened flat plate designed according to the shape of the chassis, which can be suspended and fixed under the vehicle chassis without affecting the normal driving of the vehicle, and it is fixedly connected to the bottom end of the hydraulic cylinder to evenly distribute the pressure to the ground.

[0009] Preferably, the chassis has a hollow structure corresponding to the arrangement of the hydraulic cylinders, allowing the hydraulic cylinders to pass through and be fixed; a stabilizing beam lifter is also installed on the chassis, providing a stable support point for the pressure plate lifter.

[0010] Preferably, the bottom end of the hydraulic cylinder located above the wheel is fixed to the chassis, and the reverse force is provided by the wheel below.

[0011] Preferably, the stabilizing beam is a vertically movable connecting member, through which a hydraulic cylinder passes and is fixed, so that the stabilizing beam 7 and the hydraulic cylinder form an integral structure.

[0012] Preferably, the stabilizing beam lifter is fixed by a hydraulic cylinder and connected to the bottom of the stabilizing beam.

[0013] Preferably, the top of the hydraulic cylinder is provided with a replaceable contact component to adapt to different shapes of bridge underside surfaces.

[0014] Preferably, the hydraulic pump is controlled independently or synchronously by a controller to ensure the synchronicity of the lifting process and the structural integrity.

[0015] Preferably, the equipment can be quickly deployed and removed from the site via vehicle, making it suitable for construction scenarios such as bridge jacking and bearing replacement. Beneficial effects

[0016] This invention provides a vehicle-mounted bridge lifting device that integrates transportation and construction functions, enabling rapid on-site arrival and operation, significantly shortening the construction cycle. The device's liftable pressure-bearing structure adapts to different ground conditions, simplifying on-site preparation. Its hydraulic system and replaceable contact components effectively adapt to various bridge underside shapes, ensuring stability and synchronization during the lifting process while greatly improving construction efficiency and adaptability, providing a more convenient and reliable solution for bridge maintenance operations. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the vehicle-mounted bridge lifting device described in this utility model.

[0018] Figure 2 This is a top view structural diagram of the chassis of the vehicle-mounted bridge lifting device described in this utility model.

[0019] Figure 3 This is a rear view structural schematic diagram of a vehicle-mounted bridge lifting device according to the present invention.

[0020] In the diagram: 1. Chassis; 2. Cargo box; 3. Hydraulic cylinder; 31. Double-row hydraulic cylinder; 32. Single-row hydraulic cylinder; 4. Hydraulic pump; 5. Stabilizer beam lifter; 6. Pressure plate; 7. Stabilizer beam. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-3 This utility model provides a technical solution: a vehicle-mounted bridge lifting device, comprising: Chassis 1, which is the basic structure for carrying equipment, and can be separated from or combined with the front of the vehicle; Carriage 2, mounted on the chassis 1, is used to house hydraulic equipment; The pressure plate 6 is suspended and fixed below the chassis 1 to distribute the pressure generated by the hydraulic cylinder to the ground. The stabilizing beam, located inside the carriage, can move up and down and is used to fix the hydraulic cylinders. The stabilizer beam lifter 5 is fixed at the bottom to the chassis 1 and connected to the stabilizer beam at the top, and is used to adjust the distance between the pressure plate and the ground. At least one row of hydraulic cylinders 3, 31, 32, the bottom of which is fixed to the pressure plate 6 and / or the chassis 1, and the top of which passes through the chassis 1 and is fixedly connected to the stabilizing beam; Hydraulic pump 4 provides power to all hydraulic cylinders; The controller can remotely control the lifting height of one or more hydraulic cylinders via wired or wireless means.

[0023] In this embodiment, the hydraulic cylinder can be a double-row hydraulic cylinder 31 or a single-row hydraulic cylinder 32.

[0024] In this embodiment, the pressure plate 6 is a thickened flat plate designed according to the shape of the chassis. It can be suspended and fixed under the vehicle chassis without affecting the normal driving of the vehicle. It is also fixedly connected to the bottom of the hydraulic cylinder to evenly distribute the pressure to the ground.

[0025] In this embodiment, the chassis 1 is further configured to have a hollow structure corresponding to the arrangement of hydraulic cylinders, so that the hydraulic cylinders can pass through and be fixed; a stabilizing beam lifter 5 is also installed on the chassis, and provides a stable force point for the pressure plate lifter.

[0026] In this embodiment, the bottom end of the hydraulic cylinder located above the wheel is fixed to the chassis 1, and the reverse force is provided by the wheel below.

[0027] In this embodiment, the stabilizing beam is a vertically movable connecting member, through which a hydraulic cylinder passes and is fixed, so that the stabilizing beam 7 and the hydraulic cylinder form an integral structure.

[0028] In this embodiment, the stabilizing beam lifter 5 is fixed by a hydraulic cylinder 3 and connected to the bottom of the stabilizing beam.

[0029] In this embodiment, the top of the hydraulic cylinder 3 is provided with a replaceable contact component to adapt to different shapes of bridge bottom surfaces.

[0030] In this embodiment, the hydraulic oil pump 4 is further configured to achieve independent or synchronous control of each hydraulic cylinder through a controller, so as to ensure the synchronicity of the lifting process and the structural integrity.

[0031] This embodiment is further configured such that the equipment can be quickly deployed and removed from the site via vehicle, making it suitable for construction scenarios such as bridge jacking and bearing replacement.

[0032] Its detailed connection method is a well-known technology in this field. The following mainly introduces the working principle and process, and the specific work is as follows.

[0033] Example: 1. Overall Structure and Workflow The vehicle-mounted bridge lifting device in this embodiment is based on a heavy-duty truck chassis 1. The cargo box 2 is a frame structure used to protect and house all hydraulic and control systems.

[0034] Its basic workflow is as follows: Transportation and Deployment: The equipment is towed by a locomotive and travels at conventional vehicle speeds to the area under the bridge to be constructed. The entire process complies with road traffic regulations.

[0035] Positioning and Leveling: The optimal working position is to park the vehicle directly under the bridge pier or the bridge deck that needs to be lifted. The operator initiates the initial leveling procedure via remote control.

[0036] Lowering the pressure plate: The operator activates the stabilizer beam lifter 5 via the controller, which pushes the stabilizer beam downwards. The hydraulic cylinder 3, fixed to the stabilizer beam, moves downwards accordingly, pushing the bottom pressure plate 6 to contact the ground. The operator can observe the situation and, if necessary, insert a thin steel plate under the pressure plate for simple leveling, eliminating the need for complex concrete foundation construction.

[0037] Lifting Operation: After the pressure plate is stably grounded, hydraulic pump 4 starts working, supplying high-pressure oil to all hydraulic cylinders 31 / 32. The cylinders lift synchronously, with their top contact parts tightly fitting against the bottom surface of the bridge, smoothly lifting the bridge. The controller monitors the pressure and displacement of each cylinder in real time to ensure absolute synchronization.

[0038] Removal from site: After the jacking operation is completed (e.g., after the support is replaced), the hydraulic cylinders will fall back simultaneously, the stabilizer beam lifter will retract, the pressure plate will be raised to the ground height, the equipment will be restored to transport status, and it can be driven away from the site.

[0039] 2. Detailed embodiments of each component Chassis (1) In this embodiment, chassis 1 uses a high-strength steel heavy-duty truck beam and has undergone targeted modifications. (See attached...) Figure 3 As shown, the main beam features a precise perforation design based on the planned layout of the double-row hydraulic cylinders 31, allowing the cylinder bodies to pass through. These perforations are surrounded by reinforcing rings and fastening devices to ensure the cylinders are firmly secured during operation without compromising the structural strength of the frame. A retractable standard support frame is installed at the rear of the chassis, providing additional support and enhancing stability during operation. The chassis is designed to connect to the cab via a standard hinge or towing pin connection, allowing for quick separation and assembly, facilitating independent operation of the equipment.

[0040] Pressure plate (6) The pressure plate 6 is a rectangular, thickened steel plate that matches the contours of the vehicle chassis. It is flexibly connected to the underside of the chassis 1 via multiple sets of heavy-duty hydraulic suspension locking mechanisms. During transport, this mechanism holds the pressure plate tightly against the chassis, ensuring sufficient ground clearance and not obstructing normal vehicle passage. During operation, the locking mechanisms release, and the pressure plate descends to the ground under the push of hydraulic cylinders. Anti-slip textures can be welded to its bottom to increase friction with the ground. Due to the large area of ​​the pressure plate, it can distribute the enormous lifting pressure to the foundation, greatly reducing the pressure per unit area on the ground, thus significantly reducing the requirements for ground flatness and strength.

[0041] Stabilizing beam and stabilizing beam lifter (5) The stabilizing beam is one or more high-strength transverse H-shaped steel beams located inside the carriage 2. The top flanges of all hydraulic cylinders 3 are fixed through this beam by high-strength bolts, making the upper parts of all cylinders a solid whole. This is a key mechanical structure to ensure the synchronization of lifting.

[0042] The stabilizer beam lifters 5 consist of four large hydraulic cylinders located at the four corners of the carriage and fixed to the chassis 1 at the bottom. The tops of their piston rods are connected to the stabilizer beam. The operator controls the synchronous extension and retraction of these four lifter cylinders, which drives the entire stabilizer beam and all the lifting cylinders fixed on it to rise or fall as a whole, thereby realizing the lifting function of the pressure plate 6 and adjusting its distance from the ground.

[0043] Hydraulic cylinders (3,31,32) As attached Figure 3 As shown, this device provides two layout embodiments: Example 1 (Double Row): A double row of hydraulic cylinders 31 is used. This layout is suitable for wide-body bridges that require extremely high lifting force and torque balance, with more lifting points and more even force distribution.

[0044] Example 2 (Single Row): A single row of 32 hydraulic cylinders is used. This layout is suitable for scenarios where the pier center is lifted or the required lifting force is relatively small, and the structure is more compact.

[0045] Depending on their location, the bottom of the hydraulic cylinder can be fixed in two ways: for cylinders located above the wheels, the bottom flange is directly fixed to the reinforced chassis 1, and the reaction force is provided by the wheels and suspension system below; for cylinders located between the wheels, the bottom is fixedly connected to the pressure plate 6, and the reaction force is provided by the ground.

[0046] The piston rod at the top of the hydraulic cylinder is machined with a standard threaded interface, which can be equipped with a variety of replaceable contact parts (such as arc-shaped saddles, flat pads, rubber pads, etc.) to adapt to the shape and material of different bridge bottom surfaces such as concrete bridges and steel box girders, and avoid stress concentration that could damage the bridge structure.

[0047] Hydraulics and Control Systems Hydraulic pump 4 is a high-pressure variable pump driven by a diesel engine, integrated within the carriage 2, providing stable power to the system. The control system is the "brain" of the equipment, its core being a PLC (Programmable Logic Controller) synchronization system. Each hydraulic cylinder is equipped with high-precision displacement and pressure sensors. The operator sets the target lifting height and speed via a wireless remote control. The PLC collects data from each sensor and, by adjusting the proportional valves and throttle valves on each oil circuit, precisely controls the flow and pressure of each cylinder in real time, ensuring that all lifting points move synchronously along a preset curve. The synchronization accuracy can be controlled within ±0.5mm, perfectly meeting the stringent requirements of bridge jacking for structural safety and integrity.

[0048] Beneficial effects

[0049] The equipment described in this embodiment integrates all functions of transportation, leveling, lifting, and control, achieving "ready to use immediately after stopping." It reduces preparation work, which traditionally takes days or even weeks, to within hours, significantly improving construction efficiency. Its sophisticated mechanical and electro-hydraulic control system ensures the safety, synchronization, and reliability of the lifting process, providing a new and highly efficient solution for bridge maintenance and reinforcement.

[0050] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A vehicle-mounted bridge lifting device, characterized in that, include: The chassis (1) is the basic structure for carrying equipment and can be separated from or combined with the front of the vehicle; The carriage (2), mounted on the chassis (1), is used to house hydraulic equipment; The pressure plate (6) is suspended and fixed below the chassis (1) to distribute the pressure generated by the hydraulic cylinder to the ground; The stabilizing beam, located inside the carriage, can move up and down and is used to fix the hydraulic cylinders. The stabilizer beam lifter (5) is fixed at the bottom end to the chassis (1) and connected to the stabilizer beam at the top end, and is used to adjust the distance between the pressure plate and the ground. At least one row of hydraulic cylinders (3, 31, 32) with their bottom ends fixed to the pressure plate (6) and / or chassis (1), and their top ends passing through the chassis (1) and fixedly connected to the stabilizing beam; The hydraulic oil pump (4) provides power to all hydraulic cylinders; The controller can remotely control the lifting height of one or more hydraulic cylinders via wired or wireless means.

2. The vehicle-mounted bridge lifting device according to claim 1, characterized in that, The hydraulic cylinder can be a double-row hydraulic cylinder (31) or a single-row hydraulic cylinder (32).

3. The vehicle-mounted bridge lifting device according to claim 1, characterized in that... The pressure plate (6) is a thickened flat plate designed according to the shape of the chassis. It can be suspended and fixed under the vehicle chassis without affecting the normal driving of the vehicle. It is also fixedly connected to the bottom of the hydraulic cylinder to evenly distribute the pressure to the ground.

4. The vehicle-mounted bridge lifting device according to claim 1, characterized in that, The chassis (1) is provided with a hollow structure corresponding to the arrangement of hydraulic cylinders, so that the hydraulic cylinders can pass through and be fixed; a stabilizing beam lifter (5) is also installed on the chassis, and provides a stable force point for the pressure plate lifter.

5. The vehicle-mounted bridge lifting device according to claim 1, characterized in that, The bottom end of the hydraulic cylinder located above the wheel is fixed to the chassis (1), and the reverse force is provided by the wheel below.

6. The vehicle-mounted bridge lifting device according to claim 1, characterized in that, The stabilizing beam (7) is a vertically movable connecting member, through which the hydraulic cylinder passes and is fixed, so that the stabilizing beam (7) and the hydraulic cylinder (3) form an integral structure.

7. The vehicle-mounted bridge lifting device according to claim 1, characterized in that, The stabilizer beam lifter (5) is fixed by a hydraulic cylinder (3) and connected to the bottom of the stabilizer beam (7).

8. The vehicle-mounted bridge lifting device according to claim 1, characterized in that, The top of the hydraulic cylinder (3) is provided with replaceable contact parts to adapt to different shapes of bridge bottom surfaces.

9. A vehicle-mounted bridge lifting device according to claim 1, characterized in that, The hydraulic pump (4) uses a controller to achieve independent or synchronous control of each hydraulic cylinder, ensuring the synchronicity of the lifting process and the structural integrity.

10. A vehicle-mounted bridge lifting device according to claim 1, characterized in that, The equipment can be quickly deployed and dismantled via vehicle.

Images