Cast-in-place prestressed concrete variable cross-section continuous box girder hanging basket

Abstract

The utility model discloses a cast-in-place prestressed concrete variable cross-section continuous box girder hanging basket, and belongs to the technical field of hanging baskets. A cast-in-place prestressed concrete variable cross-section continuous box girder hanging basket comprises an inner formwork which is formed by connecting a plurality of formworks in a rotating mode. And the easy-to-disassemble mechanism is arranged in the inner formwork and comprises two pull plates rotationally connected with the middle of the inner formwork, the inner ends of the pull plates are fixedly connected with sliding pull rods, and the bottom faces of the sliding pull rods are rotationally connected with two matching rods. The hydraulic push rod B drives the lower end of the abutting rod to rotate to abut against the lower portion of the inner formwork, meanwhile, the limiting frame can limit the abutting rod, in this way, the stability of the inner formwork in concrete vibration can be guaranteed, the hydraulic push rod B can drive the abutting rod to move upwards subsequently, and in this way, an easy-to-disassemble mechanism can be assisted to guarantee demolding of the lower portion of the inner formwork.

Description

Technical Field

[0001] This application relates to the field of hanging basket technology, and in particular to a hanging basket for a cast-in-place prestressed concrete variable cross-section continuous box girder. Background Technology

[0002] Hanging baskets are the main equipment in cantilever construction, and can be divided into four types according to their structural form: truss type, cable-stayed type, steel type, and hybrid type. Based on the requirements of concrete cantilever construction technology and design drawings for hanging baskets, this paper comprehensively compares the characteristics, weight, type of steel used, and construction technology of various types of hanging baskets. The design principles for hanging baskets are: light weight, simple structure, sturdy and stable, easy to move forward and disassemble, strong reusability, small deformation under stress, and sufficient space under the basket to provide a large working surface, which is beneficial for the construction of reinforcing steel and formwork.

[0003] The prior art patent document with publication number CN207452727U provides a hanging basket for cast-in-place prestressed concrete variable cross-section continuous box girder. This device combines a chassis, lifting jacks, a base, and a track. The lifting jacks can drive the chassis to move up and down to adjust the overall height of the truss. The walking jacks can also drive the base, the chassis installed on the base, and the truss to move on the cast-in-place box girder to achieve horizontal movement of the truss.

[0004] Although the existing technical solutions mentioned above can achieve horizontal movement of the truss through the cooperation of various structures, they still have the following drawbacks: In the subsequent movement process, the inner formwork of the inner side is stuck to the concrete, so a lot of time is required for dismantling during the movement, which is not convenient and efficient.

[0005] In view of this, we propose a formwork for cast-in-place prestressed concrete variable cross-section continuous box girder. Utility Model Content

[0006] 1. Technical problems to be solved

[0007] The purpose of this application is to provide a formwork for cast-in-place prestressed concrete variable cross-section continuous box girder, so as to solve the problems of low ease of use and low efficiency mentioned in the background art, and realize convenient demolding operation by modifying the inner formwork structure.

[0008] 2. Technical Solution

[0009] A formwork for a cast-in-place prestressed concrete variable cross-section continuous box girder includes an inner formwork, wherein the inner formwork is formed by rotating and connecting multiple formworks.

[0010] The easy-to-disassemble mechanism is located inside the inner template and includes two pull plates rotatably connected to the center of the inner template. A sliding pull rod is fixedly connected to the inner end of each pull plate. Two cooperating rods are rotatably connected to the bottom surface of each sliding pull rod. A rotating block is rotatably connected to the inner end of each cooperating rod. An installation frame is rotatably connected to the rotating block. A hydraulic push rod A is fixedly connected to the installation frame. The other end of the hydraulic push rod A is fixedly connected to a sliding pull rod, and the sliding pull rod is slidably connected to the installation frame.

[0011] By adopting the above technical solution, the inner template is formed by rotating and connecting multiple templates, which facilitates the control of the easy-to-disassemble mechanism. When the easy-to-disassemble mechanism is controlled, the hydraulic push rod A drives a sliding tie rod to retract along the inner groove of the mounting frame. At this time, one sliding tie rod will drive the rotating block to rotate through the cooperating rod. At this time, the cooperating rod at the other end of the rotating block can drive another sliding tie rod. In this way, the two sliding tie rods will synchronously drive the pull plate to pull the middle of the inner template to fold, which facilitates the quick demolding of the inner template and makes it more convenient to use.

[0012] Preferably, the mounting frame is fixedly connected to both ends with a hanging frame, and the hanging frame is slidably connected to the pull plate.

[0013] Preferably, the upper end of the hanging frame is fixed with two crossbeams by bolts, and the top surfaces of the two crossbeams are fixed with a support frame by bolts. The top surface of the support frame is fixed with the inner template by bolts.

[0014] Preferably, anchor rods are fixed at both ends of the two crossbeams, and the upper ends of the anchor rods are fixed to the rhomboid frame.

[0015] Preferably, the lower part of the inner template is rotatably connected to a plurality of abutment rods, the upper ends of two abutment rods are rotatably connected to limit frames, and the top surfaces of the two limit frames are connected and fixedly connected to hydraulic push rods B, which are connected and fixedly connected to the mounting frame.

[0016] By adopting the above technical solution, the lower end of the abutment rod can be rotated by the hydraulic push rod B to abut the lower part of the inner formwork. At the same time, the limiting frame will limit the abutment rod, thus ensuring the stability of the inner formwork during concrete vibration. Furthermore, the abutment rod can be driven upward by the hydraulic push rod B, which can assist the easy-to-dismantle mechanism in ensuring the demolding of the lower part of the inner formwork.

[0017] 3. Beneficial effects

[0018] Compared to existing technologies, the advantages of this application are:

[0019] 1. This application uses an inner template formed by multiple templates rotating and connecting, which facilitates the control of the easy-to-disassemble mechanism. When the easy-to-disassemble mechanism is controlled, a sliding tie rod is driven by a hydraulic push rod A to retract along the inner groove of the mounting frame. At this time, one sliding tie rod will drive the rotating block to rotate through a cooperating rod. Then, the cooperating rod at the other end of the rotating block can drive another sliding tie rod. In this way, the two sliding tie rods will synchronously drive the pull plate to pull the middle of the inner template to fold, which facilitates the quick demolding of the inner template and makes it more convenient to use.

[0020] 2. In this application, the lower end of the abutment rod is rotated by the hydraulic push rod B to abut the lower part of the inner formwork. At the same time, the limiting frame will limit the abutment rod, thus ensuring the stability of the inner formwork during concrete vibration. Furthermore, the abutment rod can be driven upward by the hydraulic push rod B, which can assist the easy-to-dismantle mechanism to ensure the demolding of the lower part of the inner formwork. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the hanging basket for the cast-in-place prestressed concrete variable cross-section continuous box girder according to an embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the easy-to-disassemble hanging basket mechanism for cast-in-place prestressed concrete variable cross-section continuous box girder according to an embodiment of this application;

[0023] The following are the labels in the diagram: 1. Inner template; 2. Easy-to-disassemble mechanism; 3. Pull plate; 4. Sliding pull rod; 5. Matching rod; 6. Rotating block; 7. Mounting frame; 8. Hydraulic push rod A; 9. Lifting frame; 10. Crossbeam; 11. Support frame; 12. Anchor rod; 13. Abutment rod; 14. Limiting frame; 15. Hydraulic push rod B. Detailed Implementation

[0024] The present application will be further described in detail below with reference to the accompanying drawings.

[0025] Reference Figure 1 and Figure 2 This application discloses a formwork for a cast-in-place prestressed concrete variable cross-section continuous box girder. The inner formwork 1 is formed by rotating and connecting multiple formwork panels.

[0026] The easy-to-disassemble mechanism 2 is located inside the inner template 1 and includes two pull plates 3 that are rotatably connected to the middle of the inner template 1. A sliding pull rod 4 is fixedly connected to the inner end of the pull plate 3. Two cooperating rods 5 are rotatably connected to the bottom surface of the sliding pull rod 4. A rotating block 6 is rotatably connected to the inner end of the two cooperating rods 5. An installation frame 7 is rotatably connected to the rotating block 6. A hydraulic push rod A8 is fixedly connected to the installation frame 7. The other end of the hydraulic push rod A8 is fixedly connected to a sliding pull rod 4. The sliding pull rod 4 is slidably connected to the installation frame 7.

[0027] The inner template 1 is formed by rotating and connecting multiple templates, which can be easily controlled by the easy-to-disassemble mechanism 2. When the easy-to-disassemble mechanism 2 is controlled, the hydraulic push rod A8 drives a sliding pull rod 4 to retract along the inner groove of the mounting frame 7. At this time, one sliding pull rod 4 will drive the rotating block 6 to rotate through the cooperating rod 5. At this time, the cooperating rod 5 at the other end of the rotating block 6 can drive another sliding pull rod 4. In this way, the two sliding pull rods 4 will simultaneously drive the pull plate 3 to pull the middle of the inner template 1 to fold, which can facilitate the quick demolding of the inner template 1 and make it more convenient to use.

[0028] The mounting frame 7 is fixed at both ends with a hanging frame 9, and the hanging frame 9 is slidably connected to the pull plate 3.

[0029] Two crossbeams 10 are fixed to the upper end of the hanging frame 9 by bolts. A support frame 11 is fixed to the top surface of the two crossbeams 10 by bolts. The top surface of the support frame 11 is fixed to the inner template 1 by bolts.

[0030] Anchor rods 12 are fixed at both ends of the two crossbeams 10, and the upper ends of the anchor rods 12 are fixed to the rhomboid frame.

[0031] The lower part of the inner template 1 is rotatably connected to multiple abutment rods 13. The upper ends of two abutment rods 13 are rotatably connected to limit frames 14. The top surfaces of the two limit frames 14 are connected and fixed with hydraulic push rods B15. The hydraulic push rods B15 are connected and fixed to the hanging frame 9.

[0032] The lower end of the abutment rod 13 can be rotated by the hydraulic push rod B15 to abut the lower part of the inner formwork 1. At the same time, the limiting frame 14 will limit the abutment rod 13, thus ensuring the stability of the inner formwork 1 during concrete vibration. Furthermore, the abutment rod 13 can be driven upward by the hydraulic push rod B15, which can assist the easy-removal mechanism 2 in ensuring the demolding of the lower part of the inner formwork 1.

[0033] The implementation principle of the hanging basket for a cast-in-place prestressed concrete variable cross-section continuous box girder in this application embodiment is as follows: the inner formwork 1 is formed by multiple formworks rotating and connected, which can be easily controlled by the easy-to-disassemble mechanism 2. When the easy-to-disassemble mechanism 2 is controlled, a sliding tie rod 4 is driven to retract along the inner groove of the mounting frame 7 through the hydraulic push rod A8. At this time, one sliding tie rod 4 will drive the rotating block 6 to rotate through the cooperating rod 5. At this time, the cooperating rod 5 at the other end of the rotating block 6 can drive another sliding tie rod 4. In this way, the two sliding tie rods 4 will synchronously drive the pull plate 3 to pull the middle of the inner formwork 1 to fold, which can facilitate the quick demolding of the inner formwork 1.

[0034] When pouring concrete, the lower end of the abutment rod 13 is rotated by the hydraulic push rod B15 to abut the lower part of the inner formwork 1. At the same time, the limiting frame 14 will limit the abutment rod 13, thus ensuring the stability of the inner formwork 1 during concrete vibration. Subsequently, the abutment rod 13 can also be driven upward by the hydraulic push rod B15, thus assisting the easy-removal mechanism 2 in ensuring the demolding of the lower part of the inner formwork 1.

Claims

1. A formwork for a cast-in-place prestressed concrete variable cross-section continuous box girder, characterized in that: include Inner template (1), wherein the inner template (1) is formed by rotating and connecting multiple templates; The easy-to-disassemble mechanism (2) is located inside the inner template (1) and includes two pull plates (3) rotatably connected to the middle of the inner template (1). A sliding pull rod (4) is fixedly connected to the inner end of the pull plate (3). Two cooperating rods (5) are rotatably connected to the bottom surface of the sliding pull rod (4). A rotating block (6) is rotatably connected to the inner end of the two cooperating rods (5). An installation frame (7) is rotatably connected to the rotating block (6). A hydraulic push rod A (8) is fixedly connected to the installation frame (7). The other end of the hydraulic push rod A (8) is fixedly connected to a sliding pull rod (4). The sliding pull rod (4) is slidably connected to the installation frame (7).

2. The formwork for cast-in-place prestressed concrete variable cross-section continuous box girder according to claim 1, characterized in that: The mounting frame (7) is fixedly connected to the two ends of the hanging frame (9), and the hanging frame (9) is slidably connected to the pull plate (3).

3. The formwork for cast-in-place prestressed concrete variable cross-section continuous box girder according to claim 2, characterized in that: The upper end of the hanging frame (9) is fixed with two crossbeams (10) by bolts. The top surface of the two crossbeams (10) is fixed with a support frame (11) by bolts. The top surface of the support frame (11) is fixed with the inner template (1) by bolts.

4. The formwork for cast-in-place prestressed concrete variable cross-section continuous box girder according to claim 3, characterized in that: Anchor rods (12) are fixed at both ends of the two crossbeams (10), and the upper end of the anchor rods (12) is fixed to the rhomboid frame.

5. The formwork for cast-in-place prestressed concrete variable cross-section continuous box girder according to claim 4, characterized in that: The lower part of the inner template (1) is rotatably connected to multiple abutment rods (13), and the upper ends of two abutment rods (13) are rotatably connected to limit frames (14). The top surfaces of the two limit frames (14) are connected and fixed with hydraulic push rods B (15), and the hydraulic push rods B (15) are connected and fixed to the hanging frame (9).

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