Inner mold assembly convenient to demold and disassemble and used for pouring and shaping hollow thin-wall pier

Abstract

The utility model aims to provide the inner mold assembly for pouring and shaping the hollow thin-wall pier, which is convenient to demold and disassemble, so that more labor-saving stripping separation between the mold plate and the thin-wall pier is realized by changing the mode of shrinking and moving the mold plate, and meanwhile, the surface forming state of the thin-wall pier can be protected to a greater extent. The inner mold assembly comprises a hollow main body frame located inside and supporting and abutting plates installed outside the main body frame in a surrounding mode and used for being directly connected with the inner wall face of the thin-wall pier in an abutting mode, and a rotary telescopic supporting and abutting mechanism is formed between at least one supporting and abutting plate and the main body frame. The supporting stop plate can rotate forwards or reversely around the central axis which is located at one end of the supporting stop plate and extends in the vertical direction, and supporting of the inner wall face of the thin-wall pier or separation between the supporting stop plate and the inner wall face of the thin-wall pier is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the auxiliary device equipment field of bridge building manufacturing, concretely to hollow thin -walled pier pouring shaping with internal mould assembly convenient to demould dismount. BACKGROUND

[0002] In the process of bridge construction manufacturing, the pier as the direct bearing body of bearing the whole weight of the bridge deck and the vehicle passing thereon is an extremely important structural member. Under various different working scenes and actual demands, various pier structures with great differences appear. Among them, the hollow thin-walled pier with a cavity formed inside as a kind of pier form currently widely applied has the characteristics of saving materials and excellent structural performance, and is usually used in large and medium span highway bridges. Its structural characteristics are that there are two pier walls parallel to each other on the pier position, which are hinged or rigidly connected with the main beam. This design can increase the stiffness of the pier, reduce the peak value of the main beam support reaction force, and increase the aesthetics of the bridge. The hollow thin-walled pier is widely used in bridge engineering, especially in large-span rigid frame bridges. The thin-walled pier can meet the safety needs in the construction process and can effectively reduce the secondary internal force caused by factors such as temperature and concrete creep. In addition, the reinforced concrete double thin-walled pier can increase the stiffness of the pier and adapt to the needs of the displacement of the superstructure, which is an ideal flexible pier. When producing and manufacturing such hollow thin-walled piers, compared with the conventional solid pier structure, an internal mold assembly with sufficient strength and convenient to dismount needs to be arranged inside to facilitate the formation of the hollow part inside the pier after the concrete solidifies.

[0003] For example, in the Chinese invention patent application file with the application number CN201811347110.X, a hollow thin-walled pier internal mold construction device and construction method are disclosed. The hollow thin-walled pier internal mold construction device includes a bracket and a plane template frame. The plane template frame is arranged on the support surface of the bracket. The plane template frame is provided with plane templates. The plane templates are hinged through connecting pins. The bracket and the plane template frame are connected through plane template adjusting screws and plane template adjusting nuts. The process of using the device includes: tightening the bracket adjusting screw to support and fix the external pier internal cavity concrete surface; striking the connecting pin; making the plane template separate from the concrete surface or pulling it apart with a hoist; loosening the bracket adjusting screw; sliding the internal mold device upward by 10-15 mm; restoring the plane template to its place, installing the connecting pin; lifting the mold or proceeding to the next step of construction.

[0004] Although the internal construction device can achieve the support effect for the hollow thin-walled pier, the large pulling force is needed to overcome the adhesion force between the template and the surface of the thin-walled pier during the demolding process. At the same time, due to the large pulling force during the demolding process, the local concrete material on the surface of the thin-walled pier is still firmly attached to the surface of the plate and is stripped, which affects the final pouring forming effect of the hollow thin-walled pier.

[0005] In view of the above problems, the utility model provides a hollow thin-walled pier pouring and shaping internal mold assembly convenient to demold and disassemble, which changes the template shrinkage movement mode, realizes the more labor-saving demolding separation between the template and the thin-walled pier, and can protect the surface forming state of the thin-walled pier to a greater extent. Utility model content

[0006] The utility model provides a hollow thin-walled pier pouring and shaping internal mold assembly convenient to demold and disassemble, which changes the template shrinkage movement mode, realizes the more labor-saving demolding separation between the template and the thin-walled pier, and can protect the surface forming state of the thin-walled pier to a greater extent.

[0007] The above technical purpose of the utility model is realized through the following technical scheme.

[0008] A hollow thin-walled pier pouring and shaping internal mold assembly convenient to demold and disassemble, characterized by comprising a hollow main frame and a supporting baffle arranged around the outside of the main frame and directly abutting against the inner wall of the thin-walled pier, at least one supporting baffle and the main frame are connected through a rotating telescopic supporting mechanism, so that the supporting baffle can rotate forward or reversely around the central axis extending vertically at one end of the supporting baffle, realizing the abutment or separation between the supporting baffle and the inner wall of the thin-walled pier.

[0009] As a preferred embodiment of the utility model, the rotating telescopic supporting mechanism comprises a rotary hinge formed between the supporting baffle and the main frame, and a driving device fixedly installed on the main frame, and a rotary transmission assembly is further arranged between the output end of the driving device and the inner side of the supporting baffle.

[0010] As the preferred of the utility model, the driving device is a rotary motor, the rotary transmission assembly contains several transmission gears, articulated connecting rods and driving main shafts, the driving main shaft is vertically rotatable and movably installed on the main frame, the articulated connecting rods are movably connected between the driving main shaft and the supporting baffle; the output shaft of the rotary motor can drive the driving main shaft to rotate forward or reversely by driving the transmission gears, and drive the supporting baffle to stretch out or shrink in.

[0011] As the preferred of the utility model, the horizontal section of the main frame is trapezoidal structure with the front narrow and the rear wide, the rotary telescopic supporting mechanism is formed between the supporting baffles on both sides and the main frame, and the supporting baffles on both sides are parallel to the side walls of the main frame in the in-shrinking state.

[0012] As the preferred of the utility model, the supporting baffles on the rear side of the main frame adopt fixed structure, and the supporting baffles on the front end of the main frame and the main frame are provided with the translational telescopic mechanism.

[0013] As the preferred of the utility model, the supporting baffles on the rear side of the main frame adopt fixed structure, and the supporting baffles on the front end of the main frame and the main frame are provided with the translational telescopic mechanism.

[0014] As the preferred of the utility model, the translational telescopic mechanism contains several telescopic jacks which are drivingly connected with the driving motor, the front end of the telescopic jack is connected and fixed with the rear end face of the supporting baffle on the front end of the main frame, so that the supporting baffle on the front end can move forward and backward under the driving of the driving motor.

[0015] As the preferred of the utility model, along the vertical direction, the main frame is provided with multiple layers of the supporting baffles.

[0016] As the preferred of the utility model, the edge of the supporting baffle is formed with a bent extension section.

[0017] In summary, the utility model can realize the following beneficial effects:

[0018] The inner mold assembly for hollow thin-wall pier pouring and shaping provided in the utility model scheme is convenient for demolding and disassembly, the mode of template contraction and movement is changed, the template and the thin-wall pier are more labor-savingly separated from each other, and the surface forming state of the thin-wall pier can be protected to a greater extent. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The overall structure of the inner mold assembly for hollow thin-wall pier pouring and shaping in the unfolded state is shown in the schematic view;

[0020] Figure 2 The overall structure schematic diagram of the inner mold assembly in a shrinkage state for the hollow thin-walled pier pouring and shaping which is convenient for demolding and disassembly is shown in the figure;

[0021] Figure 3 The partial enlarged schematic diagram of the rotating telescopic supporting mechanism is shown in the figure;

[0022] Figure 4 The structure schematic diagram of the rotating telescopic supporting mechanism from the top view is shown in the figure;

[0023] Figure 5 The structure schematic diagram of the translational telescopic mechanism from the top view is shown in the figure.

[0024] In the figure:

[0025] 1 - main body frame;

[0026] 2 - supporting baffle, 201 - bent extension section;

[0027] 3 - rotating telescopic supporting mechanism, 301 - rotary hinge part, 302 - driving device, 303 - rotary transmission assembly, 3031 - hinge connecting rod, 3032 - driving main shaft;

[0028] 4 - translational telescopic mechanism, 401 - telescopic top rod. DETAILED DESCRIPTION

[0029] The following specific embodiments are only an explanation of the utility model, and are not a limitation of the utility model. Those skilled in the art can make modifications to the embodiments without creative contribution after reading the specification, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

[0030] The present scheme is realized through the following technical means:

[0031] Embodiment: In the embodiment, an inner mold assembly for hollow thin-walled pier pouring and shaping which is convenient for demolding and disassembly is given. Specifically, the assembly contains a main body frame 1 in a hollow state inside. The main body frame 1 can be formed by welding a plurality of aluminum alloy hollow square pipe fittings. A supporting baffle 2 is installed around the outside of the main body frame 1. At least one supporting baffle 2 and the main body frame 1 form a rotating telescopic supporting mechanism 3, so that the supporting baffle 2 can rotate forward or reverse around the center axis extending vertically at one end of itself, realizing the support of the inner wall surface of the thin-walled pier or the separation between the inner wall surface of the thin-walled pier.

[0032] The drawings attached to the specification of the present application Figure 3 and 4The structure diagram shown is an example, the rotating telescopic supporting mechanism 3 here comprises a rotary hinge 301 formed between the supporting baffle 2 and the main frame 1, and a driving device 302 fixedly installed on the main frame 1, and a rotary transmission assembly 303 is further arranged between the output end of the driving device 302 and the inner side of the supporting baffle 2. Specifically, the driving device 302 here selects a rotating motor, and the rotary transmission assembly 303 comprises a plurality of transmission gears, a hinged connecting rod 3031 and a driving spindle 3032. The driving spindle 3032 here is vertically movably installed at the front end of the side of the main frame 1, and can rotate around its central axis. The hinged connecting rod 3031 here is provided in two, the two hinged connecting rods 3031 are hingedly connected at their end portions, and one end of the movable rod group formed by the two hinged connecting rods 3031 is hingedly connected to the part of the supporting baffle 2 away from the rotary hinge 301, and the other end is fixedly installed on the driving spindle 3032 and enables the hinged connecting rod 3031 on this side to reciprocally swing following the rotation of the driving spindle 3032, thereby controlling the supporting baffle 2 on this side to rotate inward or outward.

[0033] In the embodiment scheme given in the present application, in order to more conveniently separate the concrete column formed on the outside, the main frame 1 is first made into a trapezoidal structure with a front narrow and rear wide horizontal cross section. The immovable supporting baffle 2 is fixedly installed on the rear side of the main frame 1, and the supporting baffle 2 is installed on the left and right sides of the main frame 1 by the rotating telescopic supporting mechanism 3. Under the foregoing structure, when the inner mold assembly is in the unfolded state as the internal support of the hollow concrete thin-walled pier, only the concrete poured on the outside needs to be waited to set, then the rotating motor is controlled to rotate reversely, and one end of the supporting baffle 2 on both sides of the main frame 1 is pulled inward by the rotating and telescopic supporting mechanism, thereby driving the movable supporting baffle 2 to rotate as a whole around the rotary hinge 301, so as to realize the separation between the supporting baffle 2 and the inner wall of the concrete thin-walled pier. The advantage of this demolding mode is that a unilateral pulling and rotating separation mode is adopted, that is, the actual force for driving the two parts to separate is applied to the interface between the supporting baffle 2 and the thin-walled pier in a small range, and with the rotation of the supporting baffle 2, the interface moves gradually until the two parts are completely separated, so that such a demolding mode can obtain better demolding effect with smaller force, and can also avoid the problem of damage to the inner wall of the hollow thin-walled pier caused by different forces at different positions when the two parts are pulled apart as a whole.

[0034] Of course, after the abutment stop plate 2 on both sides of the inner mold assembly is separated from the inner wall of the thin-walled pier, a gap space between the abutment stop plate 2 and the inner wall of the thin-walled pier in the front-rear direction needs to be formed to facilitate efficient and convenient separation of the abutment stop plate 2 and the thin-walled pier in the front-rear direction. Therefore, the translation and expansion mechanism 4 is arranged between the abutment stop plate 2 at the front end of the main frame 1 and the main frame 1. Specifically, the translation and expansion mechanism 4 includes a plurality of telescopic jacks 401 that are in driving connection with a driving motor, the front end of the telescopic jack 401 is connected and fixed to the rear end surface of the abutment stop plate 2 at the front end of the main frame 1, so that the abutment stop plate 2 at the front end can move forward and backward under the driving of the driving motor. As shown in the accompanying drawings Figure 5 The structure is given as an example. A transverse synchronous transmission rod can be arranged first, and a plurality of transmission gears are installed on the synchronous transmission rod. Then, the forward and reverse rotation of the driving motor is used to drive the synchronous transmission rod to rotate forward and backward, and the gear mechanism is used to convert the movement into the forward extension or backward retraction movement of the abutment stop plate 2 at the front side, so as to realize the stable abutment effect on the unformed concrete during pouring and the efficient separation action after the thin-walled pier is formed.

[0035] Further preferably, in order to provide more stable synchronous demolding separation pulling action, a plurality of hinged connecting rods 3031 can be installed on the aforementioned unified driving shaft 3032 to provide more uniform demolding separation force. Further, a plurality of the abutment stop plates 2 can be arranged on the main frame 1 in the vertical direction, and each abutment stop plate 2 is controlled by an independent motor to achieve more accurate demolding separation action. In addition, in order to avoid the leakage of the unformed concrete outside the inner mold assembly in the unfolded state to affect the forming effect of the thin-walled pier and the normal operation of the internal structure, a bent extension section 201 can be formed on the edge of the abutment stop plate 2 to obtain better sealing and insulation performance.

[0036] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A hollow thin-walled pier pouring and shaping inner mold assembly facilitating demolding disassembly, characterized in that: The utility model discloses a hollow main frame (1) and the ring around installation setting for directly with the thin wall pier inner wall surface abutment of main frame (1) outside branch abutment plate (2) are contained, at least one branch abutment plate (2) with main frame (1) between form has rotary telescopic abutment mechanism (3), make this branch abutment plate (2) can rotate around the center axis of oneself one end in vertical direction positive or reverse, realize for the abutment of thin wall pier inner wall surface or the separation between thin wall pier inner wall surface. ​ 2. The inner form assembly for casting hollow thin-walled piers according to claim 1, characterized in that: The rotary telescopic abutment mechanism (3) comprises a rotary hinge (301) formed between the branch abutment plate (2) and the main frame (1), and a driving device (302) fixedly installed on the main frame (1). A rotary transmission assembly (303) is further arranged between the output end of the driving device (302) and the inner side of the branch abutment plate (2).

3. The inner form assembly for casting hollow thin-walled piers according to claim 2, characterized in that: The driving device (302) is a rotary motor, and the rotary transmission assembly (303) comprises a plurality of transmission gears, a hinged connecting rod (3031), and a driving main shaft (3032). The driving main shaft (3032) is vertically rotatable and movably installed on the main frame (1). The hinged connecting rod (3031) is movably connected between the driving main shaft (3032) and the branch abutment plate (2). The output shaft of the rotary motor can drive the driving main shaft (3032) to rotate forward or reversely, thereby driving the branch abutment plate (2) to expand outward or contract inward.

4. The inner form assembly for casting hollow thin-walled piers according to claim 3, characterized in that: The horizontal section of the main frame (1) is in a trapezoidal structure with a narrow front and a wide back. The rotary telescopic abutment mechanisms (3) are formed between the branch abutment plates (2) on both sides and the main frame (1). The branch abutment plates (2) on both sides are parallel to the side walls of the main frame (1) in the contracted state.

5. The inner form assembly for casting hollow thin-walled piers according to claim 4, characterized in that: The branch abutment plate (2) on the back side of the main frame (1) is in a fixed structure, and the branch abutment plate (2) at the front end of the main frame (1) is provided with a translation telescopic mechanism (4) between the main frame (1).

6. The inner form assembly for casting hollow thin-walled piers according to claim 5, characterized in that: The translation telescopic mechanism (4) comprises a plurality of telescopic jacks (401) that are in drivable connection with a driving motor. The front end of the telescopic jack (401) is connected and fixed to the rear end surface of the branch abutment plate (2) at the front end of the main frame (1), so that the branch abutment plate (2) at the front end can move forward and backward under the driving of the driving motor.

7. The inner form assembly for casting hollow thin-walled piers according to claim 6, characterized in that: A plurality of branch abutment plates (2) are installed on the main frame (1) in the vertical direction.

8. The inner form assembly for casting hollow thin-walled piers according to claim 7, characterized in that: A bent extension section (201) is formed on the edge of the branch abutment plate (2).

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