Adjustable hollow pier inner mold operation platform device

Abstract

The utility model relates to the technical field of building construction tools, and provides an adjustable hollow pier internal mold operation platform device which comprises a plurality of cross beams and longitudinal beams, the cross beams and the longitudinal beams are arranged in a staggered mode, the two ends of the longitudinal beams are respectively provided with the cross beams, and the two ends of the longitudinal beams are respectively erected on an internal mold. A supporting platform is mounted on the cross beams and the longitudinal beams; a telescopic rod piece is arranged at the front end of the longitudinal beam, a limiting baffle and a limiting bolt correspondingly matched with the limiting baffle are sequentially arranged on the telescopic rod piece, and a die clamping gap is reserved between the limiting baffle and the limiting bolt. The integral hoisting and dismounting are convenient, the telescopic rod piece can be adjusted according to the variable cross-section size of the internal mold, and the space in the pier is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of construction tools, and particularly relates to an adjustable operation platform device for the internal formwork of a hollow pier. Background Technique

[0002] The variable-section hollow pier is a special pier structure in bridge engineering, with a cavity structure inside. For bridges in mountainous areas, the pier height is generally high, and the design is mostly of the variable-section thin-walled hollow pier type. Construction workers need to install and dismantle formwork, tie steel bars, pour concrete, etc. inside the hollow pier. An operation platform with adjustable cross-section dimensions is particularly important to solve the problem that the operation platform cannot be recycled during construction due to the change of the pier cross-section.

[0003] The traditional construction method is to erect a steel pipe scaffold from the bottom to the top inside the pier until the pier construction is completed, and then dismantle the scaffold. However, in actual operation, there are problems such as a large amount of work and high cost in erecting the steel pipe scaffold, difficult disassembly and assembly, inconvenience for construction workers to go up and down the pier, slow construction speed, and affecting the construction progress. Content of the Utility Model

[0004] The purpose of the utility model is to provide an adjustable operation platform device for the internal formwork of a hollow pier, which can be easily erected, is convenient for workers to construct, and the extension rod of the operation platform is adjustable.

[0005] An embodiment of the utility model is realized by the following technical scheme: an adjustable operation platform device for the internal formwork of a hollow pier, including a plurality of cross beams and longitudinal beams, and the cross beams and longitudinal beams are arranged alternately. Both ends of the longitudinal beam are respectively provided with the cross beam, and both ends of the longitudinal beam are respectively erected on the internal formwork, and a support platform is installed on the cross beam and the longitudinal beam; an expansion rod member is provided at the front end of the longitudinal beam, and a limit baffle and a corresponding limit bolt are sequentially arranged on the expansion rod member, and a formwork clamping gap is left between the limit baffle and the limit bolt.

[0006] Furthermore, the expansion rod member is inserted into the longitudinal beam and is slidably connected thereto, and a chute opening is provided in the length direction of the longitudinal beam, and a plurality of fixing bolts are installed on the expansion rod member and are clamped in the chute opening to cooperate with it.

[0007] Furthermore, the support platform adopts a steel plate grid structure; the support platform is welded to the longitudinal beam and the cross beam.

[0008] Furthermore, a plurality of longitudinal beams are evenly spaced along the length direction of the cross beam.

[0009] Furthermore, three cross beams are provided and are symmetrically distributed on both sides of the support platform, and the length of the cross beam in the middle is greater than the length of the cross beam on the edge side of the support platform.

[0010] Furthermore, the cross beam and the longitudinal beam adopt square tube structures.

[0011] The technical solutions of the embodiments of the present utility model at least have the following advantages and beneficial effects:

[0012] 1. Enough space is left at the bottom inside the pier for construction workers to go up and down, and it is convenient to operate on the support platform;

[0013] 2. The cross-sectional size of the platform device can be adjusted and adapted according to the variable cross-section of the internal mold. The integrated structure is convenient for overall hoisting, installation and disassembly, improves construction efficiency, and has high bearing pressure stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 It is a top view structural schematic diagram of the adjustable internal mold operation platform device for a hollow pier provided for the embodiments of the present utility model;

[0016] Figure 2 For Figure 1 a partial enlarged view of the A part in

[0017] Figure 3 It is a longitudinal sectional view of the adjustable internal mold operation platform device for a hollow pier in the present utility model;

[0018] Figure 4 It is a transverse sectional view of the adjustable internal mold operation platform device for a hollow pier in the present utility model.

[0019] Reference numerals: 1 - cross beam, 2 - longitudinal beam, 21 - chute opening, 3 - internal mold, 4 - support platform, 5 - telescopic member, 6 - limit baffle, 7 - limit bolt, 8 - fixing bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0021] Accordingly, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0022] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0023] The following is further described in conjunction with specific embodiments. Referring to Figures 1 - 4 As shown, this embodiment is an adjustable operation platform device for the inner formwork 3 of a hollow pier, including several cross beams 1 and longitudinal beams 2, and the cross beams 1 and longitudinal beams 2 are arranged alternately. Both ends of the longitudinal beam 2 are respectively provided with cross beams 1, and both ends of the longitudinal beam 2 are respectively placed on the inner formwork 3, and a support platform 4 is installed on the cross beams 1 and longitudinal beams 2; a telescopic member 5 is provided at the front end of the longitudinal beam 2, and a limit baffle 6 and a corresponding limit bolt 7 are successively arranged on the telescopic member 5, and a clamping die gap is left between the limit baffle 6 and the limit bolt 7; specifically, this device is a prefabricated integral structure, and it is hoisted as a whole into the variable-section thin-walled hollow pier by a tower crane. The telescopic member 5 is relaxed and extended to prevent it from being above the back rib of the inner formwork 3. The whole device is placed on the inner formwork 3 for support. The back rib of the inner formwork 3 is clamped between the limit bolt 7 and the limit baffle 6, and the limit bolt 7 is tightened and fixed to the inner formwork 3. As the hollow pier is continuously poured, this operation platform device can move upward accordingly. Small tools and materials such as electric welders and wrenches that are useful for workers can be placed on this support platform 4. There is no need to erect steel pipe scaffolds from the bottom up inside the pier. Workers can directly operate on the support platform 4. As the support platform 4 rises continuously, the lower space inside the pier can be designed as a permanent spiral ladder for workers to go up and down the pier.

[0024] The first step for lifting and disassembling the operation platform is to first loosen the limit bolt 7 and suspend the platform device with a wire rope by a tower crane; the second step is to loosen the fixing bolt 8 so that the telescopic member 5 can freely expand and contract within the main keel; the third step is to lift the platform device with a tower crane, retract the telescopic member inward by 5 - 10 cm and then hoist the platform; the fourth step is to lower the platform device to the predetermined position, adjust the length of the telescopic member 5, and after meeting the requirements, tighten the limit bolt 7 for positioning and locking; the fifth step is to tighten the fixing bolt 8 again for fixing, and finally complete the platform ascent. If it is no longer needed and needs to be lifted out, only the first three steps need to be completed and the platform device is lifted out and placed on the ground or returned to the factory.

[0025] Referring to Figure 3As shown in the figure, the telescopic rod member 5 in this embodiment is inserted into the longitudinal beam 2 and is slidably connected thereto. A chute opening 21 is provided in the length direction of the longitudinal beam 2. A plurality of fixing bolts 8 that are clamped in the chute opening 21 and cooperate with it are installed on the telescopic rod member 5. Specifically, the position of the telescopic rod member 5 that moves out is adjusted according to the size of the variable cross-section inner mold 3. The telescopic rod member 5 is pulled out from the longitudinal beam 2, and the fixing bolts 8 move along the chute opening 21, so that the telescopic rod member 5 can be placed on the inner mold 3 at different height positions. At this time, the fixing bolts 8 are tightened and fixed.

[0026] Refer to Figure 1 As shown in the figure, the support platform 4 in this embodiment adopts a steel plate grid structure; the support platform 4 is welded to the longitudinal beam 2 and the cross beam 1. Specifically, the use of steel plate mesh enhances the operable area and the bearing area, enhances the bearing capacity and stability of the platform, and reduces the safety risk.

[0027] A plurality of longitudinal beams 2 are evenly arranged at intervals along the length direction of the cross beam 1, and are arranged at equal intervals of 1.2 m.

[0028] In this embodiment, there are three cross beams 1 symmetrically distributed on both sides of the support platform 4, and the length of the cross beam 1 in the middle is greater than the length of the cross beam 1 on the edge side of the support platform 4. The cross beam 1 faces the arc section of the inner mold 3, and both ends of the cross beam 1 are close to the inner mold 3.

[0029] Refer to Figure 3 and Figure 4 As shown in the figure, the cross beam 1 and the longitudinal beam 2 in this embodiment adopt a square tube structure. Specifically, the square tubes are welded with 120 mm x 120 mm.

[0030] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adjustable hollow pier inner mold (3) operating platform device, characterized in that: It comprises a plurality of cross beams (1) and longitudinal beams (2), wherein the cross beams (1) and longitudinal beams (2) are arranged in a staggered manner, the two ends of the longitudinal beam (2) are respectively provided with the cross beam (1) and the two ends of the longitudinal beam (2) are respectively laid on the inner mold (3), and the cross beam (1) and the longitudinal beam (2) are respectively installed with a supporting platform (4); A telescopic rod (5) is provided at the front end of the longitudinal beam (2), and a limit baffle (6) and a corresponding limit bolt (7) are provided on the telescopic rod (5) in sequence, and a clamping gap is left between the limit baffle (6) and the limit bolt (7).

2. The adjustable hollow pier inner mold (3) operating platform device according to claim 1 is characterized in that: The telescopic rod (5) is inserted into the longitudinal beam (2) and slidably connected thereto, and a sliding groove opening (21) is provided in the longitudinal direction of the longitudinal beam (2). The telescopic rod (5) is provided with a plurality of fixing bolts (8) which are clamped in the sliding groove opening (21) and cooperate with the sliding groove opening (21).

3. The adjustable hollow pier inner mold (3) operating platform device according to claim 1 is characterized in that: The supporting platform (4) adopts a steel plate grid structure.

4. The adjustable hollow pier inner mold (3) operating platform device according to claim 3 is characterized in that: The supporting platform (4) is connected to the longitudinal beam (2) and the transverse beam (1) by welding.

5. The adjustable hollow pier inner mold (3) operating platform device according to claim 1 is characterized in that: The plurality of longitudinal beams (2) are evenly spaced and arranged along the length direction of the transverse beam (1).

6. The adjustable hollow pier inner mold (3) operating platform device according to claim 1 is characterized in that: The cross beams (1) are provided with three cross beams (1) symmetrically distributed on both sides of the support platform (4), and the length of the cross beam (1) located in the middle is greater than the length of the cross beam (1) located on the edge side of the support platform (4).

7. The adjustable hollow pier inner mold (3) operating platform device according to claim 1 is characterized in that: The cross beam (1) and the longitudinal beam (2) adopt a square tube structure.

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