A suspended prestress tensioning device

Abstract

The utility model provides a kind of suspension type prestress tensioning operation device, it is related to prestress tensioning equipment technical field. Including suspension connection system and main bearing frame;Suspension connection system includes fixed link and connecting rod, fixed link is connected with prestressed member, connecting rod one end is connected with fixed link, and other end is connected with the top end of main bearing frame;Main bearing frame includes base and support frame, support frame is set on base and is perpendicular to base, support rod is connected between support frame and base, and protection structure is arranged on support frame. The utility model realizes the technical breakthrough of prestress tensioning operation under the state of suspension by suspension type design, and the separation design of artificial operation platform and equipment bearing platform fundamentally improves the safety guarantee level of operating personnel, effectively solves the technical problem of prestress tensioning operation in narrow space, and significantly improves operation accuracy, safety and construction efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of prestressed tensioning equipment, specifically to a suspended prestressed tensioning operation device. Background Technology

[0002] Traditional prestressed tensioning platforms are primarily designed for ground-level or relatively spacious construction environments, performing well in conventional prefabrication sites or open construction sites. However, in modern bridge construction practice, especially in special construction environments such as inside bridge box girders, viaduct structures, tunnel engineering, and underground spaces, prestressed tensioning operations are often required to be performed in a suspended state.

[0003] When performing prestressing tensioning operations in a suspended state, existing technologies face the fundamental problem of difficulty in ensuring platform stability. Traditional platforms are prone to swaying and vibration in a suspended state, which seriously affects tensioning accuracy and operation quality. At the same time, the load transfer path in a suspended environment is complex, placing higher demands on the strength and stiffness of the platform structure, which existing platform structures cannot meet.

[0004] In confined spaces such as inside bridge box girders and tunnel structures, traditional tensioning platforms are difficult to access due to their large size. Even if they manage to enter, they cannot provide sufficient operating space, severely hindering the smooth progress of construction operations. The limited movement of operators in confined spaces and the difficulty in adjusting equipment not only affect construction efficiency but also pose safety hazards.

[0005] Prestressed tendons bear extremely high tensile stress during tensioning. Once they break, a huge amount of elastic energy is released, posing a serious threat to surrounding personnel. In existing technologies, the manual operation platform and the tensioning equipment platform are usually designed as an integrated unit, lacking effective physical isolation between operators and the hazard source. When accidents such as prestressed tendon breakage occur, personnel safety cannot be adequately guaranteed. Utility Model Content

[0006] The purpose of this utility model is to provide a suspended prestressing tensioning operation device that solves the problem of prestressing tensioning operations in confined spaces and ensures high safety during operation.

[0007] To achieve the above objectives, this utility model employs the following technical solution:

[0008] A suspended prestressed tensioning device includes a suspension connection system and a main load-bearing frame;

[0009] The suspension connection system includes a fixed rod and a connecting rod. The fixed rod is connected to the prestressed member, and one end of the connecting rod is connected to the fixed rod, while the other end is connected to the top of the main load-bearing frame.

[0010] The main load-bearing frame includes a base and a support frame. The support frame is disposed on the base and perpendicular to the base. A support rod is connected between the support frame and the base. A protective structure is provided on the support frame.

[0011] A manual operation platform is located on one side of the support frame, and the manual operation platform is equipped with operating equipment.

[0012] The equipment support platform is located on the other side of the support frame. The equipment support platform is equipped with a prestressing tensioning device, which is electrically connected to the operating equipment. Support plates are provided at both ends of the equipment support platform.

[0013] Furthermore, the prestressed tensioning device is fixedly connected to the connecting rod via a connecting pipe.

[0014] Furthermore, the base is equipped with multiple casters at its bottom.

[0015] Furthermore: a sensor is installed on the fixed rod, and the sensor is electrically connected to the prestressing tensioning device; the prestressing tensioning device also includes a monitoring system, which monitors the platform status, tension force data and environmental parameters in real time through the sensor.

[0016] Furthermore, multiple suspension points are provided at the connection between the connecting rod and the top of the main load-bearing frame. Pulleys and suspension rigging are provided at the suspension points, and the connecting rod is connected to the top of the main load-bearing frame through a suspension lock on the pulley.

[0017] Furthermore: the support plate is perpendicular to the base and the support frame and is disposed at both ends of the equipment carrying platform.

[0018] Furthermore: the protective structure is a protective cover, which is made of alloy steel plate.

[0019] Furthermore, the protective cover is provided with an observation window.

[0020] Furthermore, the protective cover has a multi-layer composite structure, with an outer layer of high-hardness steel plate and an inner layer of energy-absorbing material.

[0021] Furthermore, the support frame is equipped with a movable door.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] I. This device achieves a technological breakthrough in prestressing tensioning operations under suspension through the structural design of its suspension connection system and main load-bearing frame. The combined configuration of fixed and connecting rods, along with a multi-point suspension method, effectively solves the technical challenge of traditional ground-based work platforms being unable to adapt to suspended environments. The device exhibits excellent stability and load-bearing capacity under suspension, capable of withstanding various loads generated during prestressing tensioning operations, providing a reliable technical solution for prestressing operations in complex construction environments such as bridge box girder interiors and tunnel structures.

[0024] Second, this device employs a design that separates the manual operation platform from the equipment support platform. By physically separating the personnel operating area from the tensioning equipment, operators are not directly exposed to the dangerous impact zone in the event of an accident such as prestressed tendon breakage. Furthermore, the tension reaction force generated by the prestressing tensioning equipment is directly transmitted to the suspension connection system through connecting pipes, avoiding impact on the manual operation platform and significantly reducing safety risks.

[0025] Third, this device effectively solves the technical challenges of prestressing tensioning operations in confined spaces. The casters at the bottom of the base give the device excellent ground mobility, enabling precise positioning and adjustment in tight spaces. In suspended operation, the device occupies very little ground space, primarily utilizing the overhead space for operations, providing an effective solution for prestressing construction in confined spaces. The vertical arrangement of the support plates saves space while ensuring effective equipment support, demonstrating high efficiency in space utilization.

[0026] IV. The protective cover in this device is made of alloy steel plate, which has excellent impact resistance and can effectively block the impact of broken prestressed tendons. The observation window is designed to meet the monitoring needs of operators while ensuring protective functions. The multi-layered composite structure of the protective cover achieves superior protective performance through the synergistic effect of the outer high-hardness steel plate and the inner energy-absorbing material, providing comprehensive safety protection for operators. Attached Figure Description

[0027] Figure 1 A three-dimensional schematic diagram of a suspended prestressed tensioning device provided for this utility model;

[0028] Figure 2 This is a side view schematic diagram of a suspended prestressed tensioning device provided by this utility model.

[0029] In the picture:

[0030] 1. Suspension connection system; 2. Main load-bearing frame; 11. Fixing rod; 12. Connecting rod; 21. Support frame; 22. Support rod; 23. Protective structure; 24. Base; 3. Operating equipment; 4. Prestressed tensioning equipment; 5. Support plate; 6. Connecting pipe; 7. Casters; 8. Movable door. Detailed Implementation

[0031] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] like Figure 1 As shown: This utility model provides a suspended prestressed tensioning device, including a suspension connection system 1 and a main load-bearing frame 2. The suspension connection system 1 includes a fixed rod 11 and a connecting rod 12. The fixed rod 11 is connected to the prestressed component. One end of the connecting rod 12 is connected to the fixed rod 11, and the other end is connected to the top of the main load-bearing frame 2. The main load-bearing frame 2 includes a base 24 and a support frame 21. The support frame 21 is set on the base 24 and is perpendicular to the base 24. A support rod 22 is connected between the support frame 21 and the base 24. A protective structure 23 is set on the support frame 21. A manual operation platform is set on one side of the support frame 21 and is equipped with an operating device 3. An equipment carrying platform is set on the other side of the support frame 21 and is equipped with a prestressed tensioning device 4. The prestressed tensioning device 4 is electrically connected to the operating device 3. Support plates 5 are set at both ends of the equipment carrying platform.

[0034] Specifically, the suspension connection system 1 is the core component of the entire device to achieve its suspension function. The fixed rod 11 is made of high-strength steel, possessing sufficient load-bearing capacity and tensile strength to withstand various loads generated during prestressing tensioning. The fixed rod 11 is firmly connected to the prestressed components via bolts or welding, ensuring the reliability and safety of the connection. The connecting rod 12 is also made of high-strength steel. One end is connected to the fixed rod 11 via a universal joint, allowing for angle adjustment within a certain range. The other end is connected to the top of the main load-bearing frame 2 via a universal joint. The design of the connecting rod 12 considers the stress characteristics under suspension, employing a hollow tubular structure that ensures strength while reducing weight, thus contributing to the overall stability of the device. The main load-bearing frame 2 serves as the main structure of the entire device. The base 24 adopts a rectangular steel frame structure, possessing excellent bending and torsional resistance. The design of the base 24 fully considers the stress distribution under suspension, ensuring safety under various working conditions through the arrangement of reinforcing ribs. The support frame 21 is vertically mounted on the base 24, made of I-beams or channel steel, possessing sufficient rigidity and strength. Multiple support rods 22 are installed between the support frame 21 and the base 24, forming a stable triangular support structure, which effectively improves the overall structural stability and resistance to lateral deformation. This design represents a technological breakthrough in performing prestressed tensioning operations in a suspended state, solving the problem that traditional ground operation platforms cannot adapt to complex construction environments, and significantly improving the environmental adaptability and operational safety of the operation platform.

[0035] In one specific embodiment of this example, the prestressed tensioning device 4 is fixedly connected to the connecting rod 12 via a connecting pipe 6. The connecting pipe 6 is made of steel pipe and has sufficient strength and rigidity to withstand the reaction force generated during the operation of the tensioning device. One end of the connecting pipe 6 is fixedly connected to the connecting rod 12, and the other end is connected to the prestressed tensioning device 4. The design of the connecting pipe 6 takes into account the force transmission path during tensioning operations. Through reasonable structural design, the tensioning reaction force is effectively transmitted to the suspension connection system 1, avoiding adverse effects on the operating platform. This connection method allows the reaction force of the tensioning device to be directly transmitted to the upper structure, reducing the impact on the platform body and improving tensioning accuracy and operational safety.

[0036] In one specific embodiment of this invention, the base 24 is equipped with multiple casters 7 at its bottom. The casters 7 are heavy-duty industrial casters, possessing excellent load-bearing capacity and steering flexibility. The casters 7 are mounted on the four corners and the center of the base 24 via dedicated brackets, forming a stable support layout. The casters 7 are equipped with locking devices, which can lock the wheels in operation to prevent platform movement, and unlock them for transportation or repositioning, facilitating platform movement. The inclusion of the casters 7 provides excellent mobility of the device on the ground, facilitating positioning and transportation in confined spaces, significantly improving construction efficiency and operational convenience.

[0037] In one specific embodiment of this example, a sensor is installed on the fixed rod 11. The sensor is electrically connected to the prestressing tensioning device 4, which also includes a monitoring system. The monitoring system monitors the platform status, tension force data, and environmental parameters in real time through the sensors. The sensors include various types such as strain sensors, displacement sensors, and temperature sensors. The strain sensors are installed at key locations on the fixed rod 11 to monitor the stress state of the rod in real time and promptly detect abnormalities. The displacement sensors monitor the displacement and deformation of the platform to ensure that the platform operates within permissible limits. The temperature sensors monitor changes in ambient temperature, providing data support for temperature compensation. The monitoring system transmits the monitoring data to the operating device 3 via wireless communication technology through the sensors. Operators can use the operating device 3 to monitor the platform and tensioning operation status in real time. The monitoring system also has an alarm function; when the monitored parameters exceed the preset range, an alarm signal is automatically issued to remind the operator to take timely measures. The application of this intelligent monitoring system greatly improves the safety and reliability of the operation, providing important technical support for prestressing tensioning operations in complex environments.

[0038] In one specific embodiment of this invention, multiple suspension points are provided at the connection between the connecting rod 12 and the top of the main load-bearing frame 2. Each suspension point is equipped with a pulley and suspension slings. The connecting rod 12 is connected to the top of the main load-bearing frame 2 via suspension locks on the pulleys. The suspension points are arranged symmetrically, typically with 4 to 6 points, to ensure uniform load distribution. The pulleys are made of high-strength steel and equipped with high-quality bearings to ensure rotational flexibility and service life. The suspension slings are made of steel wire rope, possessing high strength and good flexibility. The suspension locks feature a self-locking design, providing quick connection and reliable locking. Compared to single-point suspension, multi-point suspension offers better stability and safety; even if one suspension point malfunctions, the other suspension points can still maintain the platform's stability. The pulley system allows the suspension angle to be adjusted within a certain range, adapting to different construction needs and space constraints.

[0039] In one specific embodiment of this invention, support plates 5 are disposed perpendicular to the base 24 and perpendicular to the support frame 21 at both ends of the equipment bearing platform. The support plates 5 are made of steel plate, possessing sufficient rigidity and strength to withstand the weight of the tensioning equipment and the loads generated during tensioning operations. The support plates 5 are fixed to both ends of the equipment bearing platform by welding or bolting, forming a stable support structure, increasing the support stability of the equipment bearing platform and the prestressed components, and effectively limiting the movement of the equipment bearing platform. The support plates 5 also have a protective function, forming a protective barrier on both sides of the tensioning equipment to reduce the impact of external interference on the equipment.

[0040] In one specific embodiment of this example, the protective structure 23 is a protective cover made of alloy steel plate. The protective cover is made of high-strength alloy steel plate, typically 8 to 12 mm thick, and possesses excellent impact resistance and deformation resistance. The shape design of the protective cover fully considers the possible fracture direction and scattering trajectory of the prestressing tendons, employing an arc or zigzag design to effectively deflect or absorb the impact energy of the fractured prestressing tendons. The surface of the protective cover undergoes special treatment, exhibiting good corrosion resistance and wear resistance. The protective cover is mounted on the support frame 21 via a hinge connection, facilitating opening and closing to meet the needs of different operational stages. The selection of alloy steel plate ensures the reliability and durability of the protective cover during long-term use, providing a solid safety guarantee for operators.

[0041] In one specific embodiment of this invention, the protective cover is equipped with an observation window. The observation window is made of a high-strength transparent material, typically tempered glass or polycarbonate, ensuring both transparency and sufficient impact resistance. The design of the observation window provides a good field of vision, facilitating the operator's observation of the tensioning operation's progress. A sealing ring is provided around the observation window to ensure the integrity of the protection. A protective cover is also provided on the observation window; it can be closed when observation is not required, providing additional protection. The observation window, while ensuring safety, also meets the operator's monitoring needs for the operation process.

[0042] In one specific embodiment of this example, the protective cover is a multi-layered composite structure, with an outer layer of high-hardness steel plate and an inner layer of energy-absorbing material. The outer high-hardness steel plate is made of high-strength alloy steel with a hardness of HRC45 or higher, effectively resisting the impact of prestressed tendon fracture. The inner energy-absorbing material is made of polyurethane foam or honeycomb aluminum, possessing excellent energy absorption capacity and cushioning performance. The two layers are bonded together with an adhesive to form a composite structure that is both rigid and cushioning. The design principle of the multi-layered composite structure is that the outer steel plate first bears and disperses the impact force, while the inner energy-absorbing material further absorbs the impact energy, thereby minimizing the threat to operators. This composite structure offers superior protective performance compared to a single material.

[0043] In one specific embodiment of this example, a movable door 8 is provided on the support frame 21. The movable door 8 uses the same materials and structural design as the protective cover to ensure consistent protective performance. The movable door 8 is connected to the support frame 21 via hinges and can be opened inwards or outwards, facilitating operator access and equipment maintenance. The movable door 8 is equipped with a locking mechanism, including both manual and automatic locking methods, ensuring the door is securely locked during tensioning operations. The movable door 8 is also equipped with an emergency opening device, which can be quickly opened in emergencies to provide a passage for personnel evacuation. The design of the movable door 8 provides operators with a safe and convenient access route while maintaining the integrity of the protection during operations, reflecting an organic combination of human-centered design and safety protection.

[0044] The working principle of this utility model is as follows:

[0045] When the device is put into use, the fixed rod 11 first establishes a stable connection with the prestressed component, forming a stable load-bearing base. The connecting rod 12 transfers the weight of the entire device and the working load to the superstructure through a multi-point suspension method. Specifically, the multi-point suspension design of the suspension connection system 1 makes the load distribution more uniform and avoids the stress concentration problem that may be caused by single-point bearing. The combined use of pulleys and suspension rigging further enhances the flexibility of the suspension system, allowing the device to be adjusted in angle and position within a certain range to adapt to different construction geometry conditions.

[0046] Under normal operating conditions, the manual operating platform and the equipment support platform maintain a relatively fixed spatial position through the main support frame 2. Operators on the manual operating platform remotely control the prestressing tensioning device 4 on the equipment support platform via the operating device 3. The core of this separation design is to physically isolate the personnel operating area from potential hazards. In the event of an accident such as a prestressing tendon breakage, the operator will not be directly exposed to the dangerous impact zone. Specifically, the tension reaction force generated by the prestressing tensioning device 4 is directly transmitted to the connecting rod 12 through the connecting pipe 6, and then to the upper structure through the suspension connection system 1, rather than to the operating platform, further reducing the threat to the operator.

[0047] The protective system's working mechanism embodies a multi-layered safety design philosophy. The protective cover, as the first line of defense, effectively blocks or deflects the broken prestressing tendons when they fracture, thanks to its high-strength material construction and optimized geometry. The observation window allows operators to monitor the tensioning process in real time while ensuring protective functionality. The movable door 8 provides a safe passage for operators; its reliable locking mechanism ensures airtightness during operation, while the emergency opening function guarantees rapid evacuation in critical situations.

[0048] Sensors mounted on the fixed rod 11 collect real-time data on the platform's stress, displacement, and environmental parameters. This data is transmitted wirelessly to the monitoring system for real-time analysis and processing. The monitoring system judges the monitoring data based on preset safety thresholds, and immediately triggers an alarm mechanism when an anomaly is detected, alerting the operator to take appropriate measures. The electrical connection between the prestressed tensioning device 4 and the operating device 3 enables remote control, allowing operators to precisely control tensioning parameters on a relatively safe manual operating platform without direct contact with the tensioning equipment.

[0049] This device is particularly suitable for situations where the actual working space is very limited. The casters 7 at the bottom of the base 24 give the device excellent mobility on the ground, enabling precise positioning in confined spaces. In the suspended state, the device occupies very little ground space, relying mainly on the overhead space for operation, effectively solving the layout problem in confined spaces. The support plate 5 provides stable support for the equipment platform, preventing displacement of the equipment during tensioning and ensuring tensioning accuracy.

[0050] The coordinated operation of the entire device demonstrates the advantages of system integration. In actual operation, operators first enter the manual operation platform through the movable door 8 and set the tensioning parameters using the operating device 3. The monitoring system then starts working, monitoring the platform status and environmental parameters in real time. The tensioning equipment begins working according to the set parameters, and the generated tension force is transmitted to the structure through the prestressing tendons. Simultaneously, the tension reaction force is transmitted to the superstructure through the connecting pipe 6 and the suspension connection system 1. Throughout the entire process, the safety system remains operational, providing safety assurance for the operators.

[0051] This device, through the organic combination of the aforementioned working principles, achieves a technological breakthrough in prestressing tensioning operations within confined spaces under suspension. Compared to traditional ground-based work platforms, this device offers significant improvements in adaptability to complex environments, personnel safety, and operational efficiency. It provides an effective technical solution for prestressing tensioning operations in special construction environments such as bridge box girder interiors, tunnel structures, and underground engineering, filling a gap in related technological fields and possessing significant engineering application value and technological promotion significance.

[0052] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent transformations or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A suspended prestressed tensioning device, characterized in that: Including the suspension connection system and the main load-bearing frame; The suspension connection system includes a fixed rod and a connecting rod. The fixed rod is connected to the prestressed member, and one end of the connecting rod is connected to the fixed rod, while the other end is connected to the top of the main load-bearing frame. The main load-bearing frame includes a base and a support frame. The support frame is disposed on the base and perpendicular to the base. A support rod is connected between the support frame and the base. A protective structure is provided on the support frame. A manual operation platform is located on one side of the support frame, and the manual operation platform is equipped with operating equipment. The equipment support platform is located on the other side of the support frame. The equipment support platform is equipped with a prestressing tensioning device, which is electrically connected to the operating equipment. Support plates are provided at both ends of the equipment support platform.

2. The suspended prestressed tensioning device according to claim 1, characterized in that: The prestressed tensioning device is fixedly connected to the connecting rod via a connecting pipe.

3. The suspended prestressed tensioning device according to claim 1, characterized in that: The base is equipped with multiple casters at its bottom.

4. The suspended prestressed tensioning device according to claim 1, characterized in that: A sensor is installed on the fixed rod, and the sensor is electrically connected to the prestressing tensioning device; the prestressing tensioning device also includes a monitoring system, which monitors the platform status, tension force data and environmental parameters in real time through the sensor.

5. A suspended prestressed tensioning device according to claim 1, characterized in that: The connecting rod is provided with multiple suspension points at the connection between it and the top of the main load-bearing frame. Each suspension point is equipped with a pulley and a suspension rigging. The connecting rod is connected to the top of the main load-bearing frame through a suspension lock on the pulley.

6. The suspended prestressed tensioning device according to claim 1, characterized in that: The support plate is perpendicular to the base and the support frame and is located at both ends of the equipment carrying platform.

7. A suspended prestressed tensioning device according to claim 1, characterized in that: The protective structure is a protective cover, which is made of alloy steel plate.

8. A suspended prestressed tensioning device according to claim 7, characterized in that: The protective cover is equipped with an observation window.

9. A suspended prestressed tensioning device according to claim 7, characterized in that: The protective cover has a multi-layer composite structure, with an outer layer of high-hardness steel plate and an inner layer of energy-absorbing material.

10. A suspended prestressed tensioning device according to claim 1, characterized in that: The support frame is equipped with a movable door.

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