CN222935866U

CN222935866U - Stretching auxiliary device of cantilever cast-in-situ bent cap

Info

Publication number: CN222935866U
Application number: CN202421648588.7U
Authority: CN
Inventors: 陈东东; 张想想; 谢昭卫; 周普; 卢善治; 易佳帅; 刘瑞; 李龙; 刘文翔; 张仕腾
Original assignee: CCFEB Civil Engineering Co Ltd
Current assignee: CCFEB Civil Engineering Co Ltd
Priority date: 2024-07-12
Filing date: 2024-07-12
Publication date: 2025-06-03
Anticipated expiration: 2034-07-12

Description

Stretching auxiliary device of cantilever cast-in-situ bent cap

Technical Field

The utility model relates to the technical field of capping beam tensioning construction, in particular to a tensioning auxiliary device for a cantilever cast-in-situ capping beam.

Background

Along with the vigorous development of municipal infrastructure construction, the bridge construction has greatly developed, and the prestressing technology is widely applied in the bridge construction process, so that the technology is not only applied to the bridge superstructure, but also widely applied to the cantilever bent cap.

The cantilever bent cap is generally internally provided with a prestressed beam, and the bent cap is required to be penetrated and tensioned by prestress after the concrete pouring of the bent cap is completed. The relative difference in height between the bent cap and the ground is large, both ends of the bent cap are in a suspended state, the high-altitude structure with a prestress design is quite common in the current construction field, and the prestress tensioning operation of the bent cap is mostly concentrated at both ends of the bent cap. The traditional high-altitude prestressed bent cap is tensioned, a tensioning operation platform is usually erected by adopting a scaffold or a bracket, then tensioning equipment is placed in a hanging cage, the hanging cage is hung on the high-altitude tensioning operation platform by adopting a hoisting machine, a temporary hanging bracket is erected on the tensioning operation platform by using a steel pipe, and the tensioning equipment is hoisted by the hanging bracket for tensioning construction. However, the erection and dismantling of the tensioning operation platform are time-consuming and labor-consuming, inconvenient to move, low in position adjustment efficiency, long in tensioning operation time, high in cost and low in construction efficiency, and meanwhile, the temporary hanging frame is poor in stability, the protection performance for high-altitude operation is insufficient, the risk of high-altitude falling is high, and the safety hidden danger exists, so that the safety of operators and the construction quality cannot be guaranteed.

Disclosure of utility model

The utility model provides a stretching auxiliary device for a cantilever cast-in-situ bent cap, which aims to solve the technical problems of inconvenient movement and low safety of the stretching device for the cantilever cast-in-situ bent cap in the prior art.

According to one aspect of the utility model, a tensioning auxiliary device of a cantilever cast-in-situ capping beam is provided, the tensioning auxiliary device comprises a cantilever beam which is arranged above a bridge to be operated, a hanging basket mechanism which is used for hanging the hanging basket mechanism on the outer side of the bridge to carry out tensioning operation and a counterweight mechanism which is used for providing counterweight for the hanging basket mechanism are fixedly arranged at two ends of the cantilever beam, a supporting mechanism is arranged between the hanging basket mechanism and the counterweight mechanism, the supporting mechanism is supported on the upper end face of the bridge, and the supporting mechanism comprises a moving part which is fixed on the cantilever beam and used for sliding along the length direction of the bridge and a supporting part which is fixed on the moving part and used for supporting and locking the moving part.

Further, the moving piece comprises a moving platform arranged below the cantilever beam, a connecting column used for connecting the cantilever beam is fixed at the upper end of the moving platform, and a roller used for sliding on the upper end face of the bridge is fixed at the lower end of the moving platform;

the rollers are arranged on the mobile platform.

Further, the support piece is arranged below the movable platform and comprises a fixed rod fixed at the lower end of the movable platform and an adjusting rod movably mounted on the fixed rod along the axial direction of the fixed rod.

Further, the hanging basket mechanism comprises an operation platform, protection pieces and vertical supports, wherein the operation platform is hung on the outer side of the bridge and used for carrying out tensioning operation, the protection pieces are fixed on the two sides of the operation platform along the length direction of the bridge, the vertical supports are perpendicular to the length direction of the bridge and are fixed on the two sides of the operation platform, and one end of each vertical support, which is far away from the operation platform, is fixedly connected with the cantilever beam and is used for providing protection along the width direction of the bridge;

The protection piece is including installing in the first protection piece of operation platform near bridge one side and install in the second protection piece of operation platform far away from bridge one side for provide the protection along bridge length direction.

Further, the vertical support comprises two connecting rods for connecting the cantilever beam and the operation platform and a reinforcing frame arranged between the two connecting rods, wherein the reinforcing frame is fixedly connected with the connecting rods and used for reinforcing the connection strength between the two connecting rods and protecting the operation platform.

Further, a foot blocking plate is also arranged at the bottom of the vertical support and fixed on the operation platform.

Further, the first guard piece comprises an upright post fixed on the operation platform, a first guard plate and a second guard plate which are arranged between two adjacent upright posts, two ends of the first guard plate are respectively and fixedly connected with the two upright posts, the second guard plate is movably penetrated in the upright posts along the height direction,

The stand column is provided with a fastener, and the second guard plate is provided with a limiting groove used for the fastener to penetrate through for connection and fastening along the height direction.

Further, the second protection piece comprises a fixed column fixed on the operation platform, a movable column movably mounted on the fixed column along the length direction of the bridge, and a telescopic frame arranged between the fixed column and the movable column, and two ends of the telescopic frame are respectively connected with the fixed column and the movable column together to form a continuous fence;

The movable column is fixedly connected with the vertical support.

Further, the counterweight mechanism comprises a counterweight block fixedly mounted on the cantilever beam, and the counterweight block is arranged above the bridge.

Further, at least one of the cantilever beam, the supporting mechanism, the hanging basket mechanism and the counterweight mechanism is provided with a lifting lug.

The utility model has the following beneficial effects:

According to the stretching auxiliary device for the cantilever cast-in-situ bent cap, the hanging basket mechanism and the counterweight mechanism are respectively arranged at two ends of the cantilever beam, the supporting mechanism is arranged on the cantilever beam between the hanging basket mechanism and the counterweight mechanism, the whole device is lifted to the upper side of a bridge to be operated by controlling the lifting mechanism, the hanging basket mechanism is suspended on the outer side of the bridge, and the supporting mechanism is stably arranged on the upper end face of the bridge to serve as a supporting point of the whole device for supporting, so that the bent cap can be stretched. Compared with the prior art, the method has the advantages that a scaffold or a bracket is not required to be erected, time and labor are saved, the method is convenient to quickly turn over in a construction operation environment with traffic difficulty, large-scale hoisting equipment is not required to be occupied for a long time, and the method is low in cost and high in working efficiency. The hanging basket mechanism is arranged at one end of the cantilever beam and is suspended outside the side end of the bridge so as to carry constructors and equipment for tensioning operation, and the counterweight mechanism is arranged at the corresponding end of the cantilever beam so as to counterweight the hanging basket mechanism, so that the bearing of the hanging basket mechanism is ensured, the hanging basket mechanism is prevented from falling due to overlarge bearing, the safety during tensioning operation on the hanging basket mechanism is ensured, and the stability is high. The support mechanism drives the hanging basket mechanism to synchronously move at the side edge of the bridge by arranging the moving piece which can slide on the bridge along the length direction of the bridge, so that the hanging basket mechanism can quickly move to the construction range of tensioning operation, the movement is convenient, the position adjustment speed is high, the flexibility is high, the tensioning operation of the capping beams at different positions can be conveniently carried out through the hanging basket mechanism, the working efficiency can be greatly improved, the construction period is shortened, and the support piece is arranged at the lower end of the moving piece and contacted with the upper end surface of the bridge to support the moving piece to lock the moving piece, so that the device is positioned, the displacement is prevented after the device moves to the tensioning operation position, and the stability of the device is ensured. The device is rational in infrastructure, and it is convenient to install and remove, can repeatedly turnover use, and the commonality is high.

In addition to the objects, features and advantages described above, the present utility model has other objects, features and advantages. The present utility model will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is a schematic structural view of a tensioning assist device for a cantilever cast-in-situ capping beam in accordance with a preferred embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of a first guard according to a preferred embodiment of the present utility model;

fig. 3 is a schematic structural view of a second guard of a preferred embodiment of the present utility model.

Legend description:

100. Cantilever beam 200, hanging basket mechanism 201, operating platform 202, vertical bracket 2021, connecting rod 2022, reinforcing frame 2023, foot-blocking plate 203, first guard, 2031, upright post 2032, first guard, 2033, second guard, 2034, fastener 2035, limit groove 204, second guard, 2041, fixed column 2042, movable column 2043, expansion bracket 300, counterweight mechanism 400, supporting mechanism 401, moving part 4011, connecting column 4012, moving platform 4013, roller 402, supporting part 4021, fixed rod 4022, adjusting rod.

Detailed Description

Embodiments of the utility model are described in detail below with reference to the attached drawing figures, but the utility model can be practiced in a number of different ways, as defined and covered below.

As shown in fig. 1, the stretching auxiliary device of the cantilever cast-in-situ capping beam of the embodiment comprises a cantilever beam 100 arranged above a bridge to be operated, wherein a hanging basket mechanism 200 and a counterweight mechanism 300 are fixedly arranged at two ends of the cantilever beam 100 respectively, the hanging basket mechanism 200 is arranged at one end of the cantilever beam 100 and is suspended outside the side end of the bridge so as to carry constructors and equipment for stretching operation, and the counterweight mechanism 300 is arranged at the corresponding end of the cantilever beam 100 so as to ensure the bearing of the hanging basket mechanism 200, prevent the hanging basket mechanism 200 from falling due to overlarge bearing, ensure the safety and high stability when the stretching operation is carried out on the hanging basket mechanism 200. A supporting mechanism 400 is arranged between the hanging basket mechanism 200 and the counterweight mechanism 300, and the supporting mechanism 400 is supported on the upper end surface of the bridge so as to support and position the whole device. Preferably, the bridge side is provided with a flange along the length direction of the bridge, the cantilever beam 100 is erected above the flange of the bridge side in the direction perpendicular to the bridge, and the supporting mechanism 400 is supported on the bridge deck at the inner side of the flange, so that the flange can limit the side end of the supporting mechanism 400, and the supporting mechanism 400 is prevented from falling from the bridge. In the present embodiment, two cantilever beams 100 are provided in parallel, and the support mechanism 400 and the basket mechanism 200 are installed between the two cantilever beams 100 in a direction perpendicular to the cantilever beams 100 to enhance the stability of the structure. When the device is used, the lifting machinery is controlled to lift the cantilever beam 100 to the upper part of the flange of the side edge of the bridge, the supporting mechanism 400 and the counterweight mechanism 300 are placed on the bridge at the inner side of the flange, the hanging basket mechanism 200 is suspended at the outer side of the flange, the supporting mechanism 400 is stably placed on the upper end face of the bridge so as to serve as a fulcrum of the whole device to support, and after the device is erected, a worker can reach the hanging basket mechanism 200 through the lifting machinery to stretch-draw the bent cap. Compared with the prior art, the method has the advantages that a scaffold or a bracket is not required to be erected, time and labor are saved, the method is convenient to quickly turn over in a construction operation environment with traffic difficulty, large-scale hoisting equipment is not required to be occupied for a long time, and the method is low in cost and high in working efficiency.

The support mechanism 400 comprises a moving part 401 fixed on the cantilever beam 100 and a support part 402 fixed on the moving part 401, wherein the moving part 401 can slide on the upper end face of a bridge along the length direction of the bridge so as to drive the hanging basket mechanism 200 to synchronously move at the side edge of the bridge, so that the hanging basket mechanism 200 can be quickly moved to the construction range of tensioning operation, the movement is convenient, the position adjustment speed is high, the flexibility is high, the tensioning operation of the capping beams at different positions can be conveniently carried out through the hanging basket mechanism 200, the working efficiency can be greatly improved, the construction period is shortened, after the hanging basket mechanism is moved to the construction position required by the tensioning operation, the support part 402 is controlled to extend towards the upper end face of the bridge so as to be contacted with the upper end face of the bridge, and therefore, the support part 402 can prevent the moving part 401 from sliding on the bridge so as to realize locking of the moving part 401, position the device, prevent the device from moving to the position after the device is moved to the tensioning operation position, the stability, safety and reliability of the device are ensured.

As shown in fig. 1, the moving member 401 is disposed below the cantilever beams 100, and includes a connection column 4011 fixed at the lower end of the cantilever beams 100, a moving platform 4012 fixed at the lower end of the connection column 4011, and rollers 4013 fixed at the lower end of the moving platform 4012, where the moving platform 4012 is disposed between the two cantilever beams 100 along the length direction of the bridge and is fixedly connected to the cantilever beams 100 through the connection column 4011, so as to enhance the stability of supporting on the bridge, and the rollers 4013 are disposed at the bottom of the moving platform 4012 at intervals, and are used for contacting with the upper end surface of the bridge to slide along the length direction of the bridge. Optionally, a locking member is provided on the roller 4013 to lock the roller 4013 after the device is moved to the construction position to position the device. The connecting column 4011 is arranged between the cantilever beam 100 and the movable platform 4012, so that a certain clearance distance can be reserved, the cantilever beam 100 can be supported above the flange by the supporting mechanism 400, and meanwhile, the roller 4013 of the supporting mechanism 400 can be contacted with the upper end face of the bridge for sliding. Preferably, the connection post 4011 is provided with two along the length direction of the cantilever 100. Alternatively, the connection post 4011 may be a structure that is telescopic in the height direction.

As shown in fig. 1, the support 402 is disposed below the movable platform 4012, and includes a rod 4021 fixed to a lower end of the movable platform 4012 and an adjusting rod 4022 movably mounted on the rod 4021 along an axial direction of the rod 4021. Preferably, the support members 402 are provided in several numbers, and preferably, the support members 402 are disposed at corners of the bottom end of the movable platform 4012. Specifically, the adjusting rod 4022 is disposed below the fixing rod 4021 and movably penetrates through the fixing rod 4021, a hydraulic cylinder is disposed between the fixing rod 4021 and the adjusting rod 4022, an output end of the hydraulic cylinder is fixedly connected with the adjusting rod 4022, one end of the hydraulic cylinder far away from the output end is fixedly connected with the fixing rod 4021, the hydraulic cylinder is electrically connected with a motor, and the adjusting rod 4022 can be controlled to extend or be far away from the upper end face of the bridge in the direction of the upper end face through controlling the motor. Preferably, the motor is mounted on the mobile platform 4012. Alternatively, the adjusting rod 4022 and the fixing rod 4021 may be connected by threads to implement telescoping. The height of the support 402 in the contracted state is not greater than the height of the roller 4013 so as to ensure that the roller 4013 can contact with the upper end surface of the bridge and smoothly move along the length direction of the bridge, and the height of the support 402 in the extended state is greater than the height of the roller 4013 so that the support 402 supports the roller 4013 above the bridge deck to lock the roller 4013, thereby preventing the roller 4013 from sliding on the bridge deck to position the device. That is, when the device is moved to the construction range of the tensioning work by the roller 4013, the control adjustment lever 4022 is extended toward the deck and supported on the deck, so that the support mechanism 400 can stably support the deck, thereby achieving positioning of the device. Optionally, the bottom welded fastening who adjusts pole 4022 has the supporting legs, and the supporting legs is circular or triangle shaped board for increase and bridge floor's area of contact, in order to improve the stability of supporting.

As shown in fig. 1, the hanging basket mechanism 200 comprises an operation platform 201 arranged along the length direction of a bridge, protection pieces fixed on two sides of the operation platform 201 along the length direction of the bridge, and vertical supports 202 fixed on two sides of the operation platform 201 perpendicular to the length direction of the bridge, wherein one end of each vertical support 202, which is far away from the operation platform 201, is fixedly connected with the cantilever beams 100, and the operation platform 201 is arranged between the two cantilever beams 100, so that the operation platform 201 is connected with one end, which is far away from the bridge, of each cantilever beam 100 through the vertical supports 202, so that the operation platform 201 is hung, constructors and equipment are carried on the operation platform 201 to stretch-draw the capping beams, and meanwhile, protection along the width direction of the bridge is provided for personnel and equipment in the operation platform 201, and the safety of high-altitude operation is improved. The protection piece is including installing in the first protection piece 203 that operation platform 201 is close to bridge one side and install in the second protection piece 204 that operation platform 201 kept away from the bridge one side for personnel and equipment in the operation platform 201 provide along bridge length direction's protection, avoid dropping from operation platform 201, effectively reduce the potential safety hazard, reinforcing security.

As shown in fig. 1, the vertical support 202 includes a connecting rod 2021 for connecting the cantilever beam 100 and the operation platform 201, and a reinforcing frame 2022 fixed on the connecting rod 2021, wherein two connecting rods 2021 are respectively arranged at two sides of the operation platform 201 along the length direction of the cantilever beam 100, the reinforcing frame 2022 is arranged between the two connecting rods 2021, and two sides of the reinforcing frame are respectively fixedly connected with the two connecting rods 2021, so as to strengthen the connection strength between the two connecting rods 2021, ensure the structural strength, and the reinforcing frame 2022 is arranged at one end of the vertical support 202 close to the operation platform 201, so as to protect the side edges of the operation platform 201. Preferably, the connecting rod 2021 is H-steel. Preferably, the end of the reinforcement frame 2022 remote from the cantilever beam 100 is fixedly connected to the operation platform 201. The reinforcement frame 2022 comprises a plurality of reinforcement bars which are distributed in a crossed manner and/or in parallel manner, so that the overall strength is improved, and the flexible movement of the worker is facilitated. Preferably, the reinforcing rod is angle steel.

As shown in fig. 1, a foot blocking plate 2023 is further installed at the bottom of the vertical support 202, and the foot blocking plate 2023 is fixed on the operation platform 201, so as to enhance protection of the operation platform 201. The foot blocking plate 2023 and the protecting piece form a four-side enclosing structure on the operation platform 201, so that the operation platform 201 can be protected in all directions, and the safety of high-altitude operation of the device is greatly improved.

As shown in fig. 1 and 2, the first protecting member 203 is disposed on one side of the operation platform 201 far away from the bridge in the length direction, and includes an upright post 2031 fixed on the operation platform 201 along the length direction of the bridge, a first protecting plate 2032 and a second protecting plate 2033 disposed between two adjacent upright posts 2031, two ends of the first protecting plate 2032 are respectively fixedly connected with the two upright posts 2031, and the second protecting plate 2033 movably penetrates into the two upright posts 2031 along the height direction. Specifically, a first guard plate 2032 is disposed at the bottom of the upright posts 2031, and the side ends of the first guard plate 2032 are integrally fixed with the upright posts 2031 by welding to form a fixed protection for the operation platform 201, and a mounting groove for accommodating a second guard plate 2033 is correspondingly formed on the opposite side of two adjacent upright posts 2031, so that the second guard plate 2033 can stretch and retract along the height direction of the upright posts 2031 in the mounting groove to form a movable protection for the operation platform 201. In this embodiment, the first guard plate 2032 and the second guard plate 2033 are disposed in parallel in the installation groove, the first guard plate 2032 is fixedly connected to the upright 2031, and the second guard plate 2033 is movably fitted to the upright 2031. Alternatively, the second guard plate 2033 may be movably disposed inside the first guard plate 2032 in the height direction. Alternatively, the first guard plate 2032 may be fixedly mounted on the outside of the pillar 2031. Preferably, two columns 2031 are disposed on the operation platform 201 along the length direction of the bridge, and the two columns 2031 are located at both ends of the operation platform 201, respectively. Alternatively, a plurality of columns 2031 may be arranged at intervals on the operation platform 201. Alternatively, the upright 2031 may be fixedly attached to the vertical support 202 by a lateral end.

Limiting grooves 2035 are formed in the two sides of the second guard plate 2033 in the height direction, limiting holes corresponding to the limiting grooves 2035 are formed in the upright posts 2031, and fastening pieces 2034 used for being matched with the limiting grooves 2035 and the limiting holes to fasten the second guard piece 204 are mounted on the upright posts 2031. Preferably, the limiting hole and the limiting groove 2035 are provided with matched threads, and the fastener 2034 is a bolt. When the novel guard board is used, the second guard board 2033 is adjusted to be at a proper height according to actual protection requirements, and then bolts are sequentially inserted into the threaded holes and the limiting grooves 2035 to be screwed, so that the second guard board 2033 can be fastened. Preferably, the limiting hole is disposed at one end of the upright post 2031 away from the operation platform 201, so as to increase the height adjustment range of the second guard plate 2033, and the application range is larger. Therefore, the first protection piece 203 adopts a vertically telescopic structure, so that the height of the second protection plate 2033 can be adjusted according to actual needs, the protection of the operation platform 201 is increased, the flexibility of protection is high, the occupation of the operation space of too many operation platforms 201 can be avoided, the construction operation is facilitated, and the storage, the subsequent disassembly and the transportation are also facilitated. Preferably, weight reducing holes are formed in the first guard 2032 and/or the second guard 2033 to reduce material waste and facilitate handling and transportation.

As shown in fig. 1 and 3, the second protection element 204 is disposed on one side of the operation platform 201, which is close to the bridge, and includes a fixed column 2041 fixed on the operation platform 201, a movable column 2042 disposed on two sides of the fixed column 2041, and a telescopic frame 2043 disposed between the fixed column 2041 and the movable column 2042, wherein two ends of the telescopic frame 2043 are respectively fixedly connected with the fixed column 2041 and the movable column 2042, and the telescopic frame 2043 includes a plurality of protection rods disposed in a cross manner and hinged to each other, so that the telescopic frame 2043 can be telescopic along the length direction of the operation platform 201 through the movable fit between the protection rods. Preferably, the fixed column 2041 is disposed in the middle of the operation platform 201, and the movable columns 2042 on two sides are pulled toward the vertical support 202, so that a continuous fence structure can be formed to protect one side of the operation platform 201, and the operation is convenient. The movable column 2042 is fixedly connected with the vertical support 202, so that the stability of the connection of the second protection frame is enhanced, and the safety is improved. Preferably, the fixing post 2041 may also be provided at one end of the operation platform 201.

As shown in fig. 1, the weight mechanism 300 and the basket mechanism 200 are correspondingly disposed on two sides of the support mechanism 400 on the cantilever beam 100, and the weight mechanism 300 is disposed on the inner side of the bridge for providing weight to the basket mechanism 200 suspended on the outer side of the bridge, so as to prevent the basket mechanism 200 from falling. The counterweight mechanism 300 comprises a counterweight block fixedly mounted on the cantilever beam 100, and the distance between the bottom of the counterweight block and the lower end of the cantilever beam 100 is not greater than the height of the supporting mechanism 400, so that the supporting mechanism 400 is prevented from tilting to cause the device to roll over, and the stability of the supporting mechanism 400 on the bridge deck is ensured. Optionally, the balancing weights can be detachably and fixedly connected with the cantilever beam 100, and the balancing weights are provided with different specifications, and the balancing weights with different specifications can be selected according to different loads of the hanging basket mechanism 200.

Preferably, at least one of the cantilever beam 100, the support mechanism 400, the basket mechanism 200 and the counterweight mechanism 300 is provided with a lifting lug to act as a lifting point for the movement of the device for cooperation with a lifting machine to lift the device as a whole onto a bridge to be worked. Preferably, the lifting lug is round steel and is welded to the top end of the cantilever beam 100.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A tension assisting device of a cantilever cast-in-situ bent cap is characterized in that,

The device comprises a cantilever beam (100) which is arranged above a bridge to be operated, wherein two ends of the cantilever beam (100) are respectively and fixedly provided with a hanging basket mechanism (200) which is used for hanging outside the bridge to carry out tensioning operation and a counterweight mechanism (300) which is used for providing counterweight for the hanging basket mechanism (200), and a supporting mechanism (400) is arranged between the hanging basket mechanism (200) and the counterweight mechanism (300);

The supporting mechanism (400) is supported on the upper end face of the bridge and comprises a moving part (401) fixed on the cantilever beam (100) and used for sliding along the length direction of the bridge, and a supporting part (402) fixed on the moving part (401) and used for supporting and locking the moving part (401).

2. The tension assist device of a cantilever cast-in-situ bent cap according to claim 1, wherein,

The movable part (401) comprises a movable platform (4012) arranged below the cantilever beam (100), a connecting column (4011) used for connecting the cantilever beam (100) is fixed at the upper end of the movable platform (4012), and a roller (4013) used for sliding on the upper end face of the bridge is fixed at the lower end of the movable platform (4012);

The rollers (4013) are arranged on the mobile platform (4012).

3. The tension assist device of a cantilever cast-in-situ bent cap according to claim 2, wherein,

The support piece (402) is arranged below the mobile platform (4012) and comprises a fixed rod (4021) fixed at the lower end of the mobile platform (4012) and an adjusting rod (4022) movably installed on the fixed rod (4021) along the axial direction of the fixed rod (4021).

4. The tension assist device of a cantilever cast-in-situ bent cap according to claim 1, wherein,

The hanging basket mechanism (200) comprises an operation platform (201) which is hung on the outer side of the bridge and used for tensioning operation, protection pieces which are fixed on two sides of the operation platform (201) along the length direction of the bridge, and vertical supports (202) which are perpendicular to the length direction of the bridge and are fixed on two sides of the operation platform (201), wherein one end of each vertical support (202) far away from the operation platform (201) is fixedly connected with the cantilever beam (100) and used for providing protection in the width direction of the bridge;

The protection piece comprises a first protection piece (203) arranged on one side, close to the bridge, of the operation platform (201) and a second protection piece (204) arranged on one side, far away from the bridge, of the operation platform (201) and used for providing protection in the length direction of the bridge.

5. The tension assist device of a cantilever cast-in-situ bent cap of claim 4, wherein,

The vertical support (202) comprises two connecting rods (2021) used for connecting the cantilever beam (100) and the operation platform (201) and a reinforcing frame (2022) arranged between the two connecting rods (2021), wherein the reinforcing frame (2022) is fixedly connected with the connecting rods (2021) and used for reinforcing the connection strength between the two connecting rods (2021) and protecting the operation platform (201).

6. The tension assist device of a cantilever cast-in-situ bent cap of claim 5, wherein,

Foot-blocking plates (2023) are further mounted at the bottoms of the vertical supports (202), and the foot-blocking plates (2023) are fixed on the operation platform (201).

7. The tension assist device of a cantilever cast-in-situ bent cap of claim 4, wherein,

The first protection piece (203) comprises an upright post (2031) fixed on the operation platform (201) and a first protection plate (2032) and a second protection plate (2033) arranged between two adjacent upright posts (2031), wherein two ends of the first protection plate (2032) are respectively fixedly connected with the two upright posts (2031), the second protection plate (2033) movably penetrates through the upright posts (2031) in the height direction, a fastener (2034) is arranged on the upright posts (2031), and a limiting groove (2035) for the fastener (2034) to penetrate through for connection and fastening is formed in the second protection plate (2033) in the height direction.

8. The tension assist device of a cantilever cast-in-situ bent cap of claim 4, wherein,

The second protection piece (204) comprises a fixed column (2041) fixed on the operation platform (201), a movable column (2042) movably installed on the fixed column (2041) along the length direction of the bridge, and a telescopic frame (2043) arranged between the fixed column (2041) and the movable column (2042), wherein two ends of the telescopic frame (2043) are respectively connected with the fixed column (2041) and the movable column (2042) together to form a continuous fence;

the movable column (2042) is fixedly connected with the vertical support (202).

9. The tension assist device of a cantilever cast-in-situ bent cap according to claim 1, wherein,

The counterweight mechanism (300) comprises a counterweight block fixedly mounted on the cantilever beam (100), and the counterweight block is arranged above the bridge.

10. The tension assist device of a cantilever cast-in-situ bent cap according to claim 1, wherein,

At least one of the cantilever beam (100), the supporting mechanism (400), the hanging basket mechanism (200) and the counterweight mechanism (300) is provided with a lifting lug.