Lifting platform suitable for operation in bridge hollow pier

Abstract

The utility model belongs to the technical field of lifting platforms, and particularly relates to a lifting platform suitable for operation in a hollow pier of a bridge. The inclined hanging arms are arranged on the periphery of the lifting platform; and the supporting rods are symmetrically arranged on the two sides of the lifting platform. According to the lifting platform, the functions of overall size change, lifting and hanging and the like of the lifting platform are combined into a whole, the supporting rods are arranged on the two sides of the lifting platform to form supporting, and the lifting platform is fixed to an upper-layer inner formwork back cross beam through the inclined hanging arms on the periphery, so that the whole platform can be stably hung in a hollow pier, and a stable operation platform is formed; it can be guaranteed that the lifting platform is stable and does not fall off in the process of installing the inner side formwork and the reinforcing steel bar or disassembling the inner side formwork. Meanwhile, all the components are simple in structure, the size of the platform can be rapidly adjusted, the construction efficiency is high, the material consumption is small, the applicability is wide, and stability and reliability are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of lifting platforms, and in particular relates to a lifting platform suitable for operations inside hollow piers of bridges. Background Art

[0002] During the construction of bridges, when the height of the pier is high, in order to reduce the deadweight of the pier, a thin-walled hollow design is usually adopted. The construction of hollow piers is generally carried out by segmented casting, which requires multiple work platforms to be set up inside the hollow pier to ensure the synchronization of the platform and the work surface. Hollow piers are generally designed to be round-end shaped, with a gradual change in the size of the internal cross-section. In addition, in order to ensure that workers are in a safe state when working inside the hollow pier body, a stable platform needs to be set up at the bottom of each work point. The commonly used method is to use the PVC pipe tie rod hole and the inner mold back rib channel steel for fixing. The installed platforms mainly include hanging platforms fixed on the inner mold, plate platforms with internal support, and scaffolding set up inside the pier body from bottom to top as the platform skeleton. From the actual effect, these installed platforms are not conducive to the lifting and lowering of the platform, and are not convenient for the installation and disassembly of the template, which will affect the efficiency and quality of the pier body construction to a certain extent, resulting in waste of construction space or materials.

[0003] Of course, other types of hollow pier lifting platforms are also disclosed in the prior art, such as CN116676871A discloses an electric lifting platform for thin-walled hollow piers, including a thin-walled hollow pier, a lifting track, a bottom platform, and a top platform. The thin-walled hollow pier is provided with lifting tracks section by section starting from the upper surface, and the lifting tracks are increased section by section according to the construction height of the thin-walled hollow pier. The bottom platform and the top platform are driven by a motor to vertically displace the platform through the lifting track to achieve the climbing and descending of the inner cavity operating platform of the thin-walled hollow pier. The thin-walled hollow pier electric lifting platform disclosed in this patent can realize the free lifting of the platform within the entire inner cavity height range during use, and can meet the working platform requirements for construction such as concrete repair, embedded parts removal and template installation and removal within the entire height range of the inner cavity at any time. It has a high safety factor and is particularly suitable for high bridge pier construction, avoiding the erection of scaffolding and the use of embedded steel plate lifting operating platforms. It is undeniable that the thin-walled hollow pier electric lifting platform disclosed in the patent can indeed achieve the above-mentioned effects, but it still has certain shortcomings. When realizing lifting, it is necessary to set up a lifting track inside the thin-walled hollow pier, and at the same time, it is necessary to set up a platform, and set up a motor corresponding to the lifting track on the platform. The entire device has many parts, so it takes a lot of time to lay out the lifting platform of the patent in the hollow pier, which will affect the construction efficiency to a certain extent, and the realization of the function of the entire device also requires external power supply.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0005] The utility model aims to provide a lifting platform suitable for working in a hollow pier of a bridge, so as to solve the problems existing in the electric lifting platform for thin-walled hollow piers in the background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A lifting platform suitable for working in a hollow pier of a bridge, comprising:

[0008] A rectangular lifting platform arranged horizontally;

[0009] The hanging arms are arranged around the lifting platform, and the hanging arms include a first hanging arm, an adjusting screw and a second hanging arm. The bottom end of the first hanging arm is rotatably connected to the lifting platform; the bottom end of the adjusting screw extends into the top of the first hanging arm and is threadedly connected thereto, and the top of the adjusting screw extends into the bottom of the second hanging arm and is threadedly connected thereto;

[0010] Support rods are symmetrically arranged on both sides of the lifting platform and perpendicular to the length direction of the lifting platform.

[0011] Preferably, the lifting platform is formed by welding a plurality of rods; a circular ring is welded at the bottom end of the first hanging arm, and the circular ring is sleeved on the rods of the lifting platform.

[0012] Preferably, the support rods are arranged at both side ends and the middle of the lifting platform.

[0013] Preferably, a connecting screw is provided at the inner end of the support rod, the inner end of the connecting screw extends into the lifting platform and is threadedly connected thereto, and the outer end of the connecting screw extends into the support rod and is threadedly connected thereto.

[0014] Preferably, a soft anti-slip pad is fixed to the outer end of the support rod.

[0015] Preferably, four hanging arms are arranged at intervals on both sides of the lifting platform, and two hanging arms are arranged at intervals at both ends of the lifting platform.

[0016] Preferably, a hanging arm seat is fixed to the top of the second hanging arm, a vertical downward fixing anchor bolt is inserted into the hanging arm seat, and the lower end of the fixing anchor bolt passes through the hanging arm seat.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model combines the overall size change of the lifting platform with the lifting and suspension functions. Support rods are set on both sides of the lifting platform to form a support. The entire platform can be stably suspended inside the hollow pier through the surrounding oblique hanging arms and fixed to the upper inner template back beam, forming a stable working platform, which can ensure that the lifting platform is stable and does not fall during the installation of the inner template, steel bars or the removal of the inner template. At the same time, all components of the utility model are simple in structure, the platform size can be quickly adjusted, the construction efficiency is high, the material consumption is small, the applicability is wide, and it is stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a state diagram of the device of the utility model when it is connected to the inner template;

[0020] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0021] Figure 3 It is a schematic diagram of the overall structure of the utility model.

[0022] Description of main reference numerals:

[0023] 1. Lifting platform;

[0024] 2. Oblique hanging arm; 21. First oblique hanging arm; 22. Adjusting screw; 23. Second oblique hanging arm; 24. Hanging arm seat; 25. Fixed anchor bolt; 26. Ring;

[0025] 3. Support rod; 31. Connecting screw; 32. Anti-slip pad;

[0026] 4. Inner formwork; 41. Back beam. DETAILED DESCRIPTION

[0027] The following is a clear and complete description of the technical solution of the utility model patent. Obviously, the described embodiments are part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Example

[0029] See attached Figure 1-3 , a lifting platform suitable for working inside a hollow pier of a bridge, comprising:

[0030] A rectangular lifting platform 1 arranged horizontally;

[0031] The oblique hanging arm 2 is arranged around the lifting platform 1, and the oblique hanging arm 2 includes a first oblique hanging arm 21, an adjusting screw 22 and a second oblique hanging arm 23. The bottom end of the first oblique hanging arm 21 is rotatably connected to the lifting platform 1; the bottom end of the adjusting screw 22 extends into the top of the first oblique hanging arm 21 and is threadedly connected thereto, and the top of the adjusting screw 22 extends into the bottom of the second oblique hanging arm 23 and is threadedly connected thereto; a hanging arm seat 24 is fixed to the top of the second oblique hanging arm 23, and a vertically downward fixed anchor bolt 25 is inserted in the hanging arm seat 24, and the lower end of the fixed anchor bolt 25 passes through the hanging arm seat 24; it is not difficult to understand here that a through hole corresponding to the fixed anchor bolt 25 is opened on the hanging arm seat 24;

[0032] The support rods 3 are symmetrically arranged on both sides of the lifting platform 1 and perpendicular to the length direction of the lifting platform 1. In this embodiment, the support rods 3 are arranged at the ends and the middle of both sides of the lifting platform 1; the specific arrangement is as follows: a connecting screw 31 is arranged at the inner end of the support rod 3, the inner end of the connecting screw 31 extends into the lifting platform 1 and is threadedly connected thereto, and the outer end extends into the support rod 3 and is threadedly connected thereto; in addition, a soft anti-skid pad 32 is fixed to the outer end of the support rod 3.

[0033] In this embodiment, the lifting platform 1 is welded by a plurality of rods 11. Figure 2 It can be clearly seen that the middle part of the lifting platform 1 also contains mutually perpendicular rods 11 to improve the weighing capacity of the lifting platform 1; a ring 26 is welded to the bottom end of the first oblique hanging arm 21, and the ring 26 is sleeved on the rod 11 of the lifting platform 1.

[0034] Secondly, in this embodiment, four oblique hanging arms 2 are respectively arranged at intervals on both sides of the lifting platform 1, and two are respectively arranged at intervals at both ends of the lifting platform 1.

[0035] When the thin-walled hollow pier is poured upward and it is necessary to tie the steel bars and assemble the formwork, the lower section of the formwork has been assembled. After the lifting platform 1 in this embodiment is lifted to the specified height inside the thin-walled hollow pier by a crane. Loosen the support rods 3 on both sides of the lifting platform 1. Due to the threaded matching relationship between the support rods 3 and the connecting screws 31, the support rods 3 move outward at this time, so that the outer ends of the support rods 3 are placed on the back beam 41 of the inner formwork 4. In this way, the back beam 41 can form a stable and reliable support for the lifting platform 1 with the help of the support rods 3. It should be supplemented here that a back beam 41 is fixed to the inner formwork 4. At the same time, adjust the length of the oblique hanging arm 2, and fix the oblique hanging arm seat 24 to the back beam 41 of the upper section of the inner template 4. It should be specifically explained here that the back beam 41 is provided with a through hole corresponding to the fixing anchor bolt 25. After the hanging arm seat 24 is placed on the back beam 41 at the corresponding position, the lower end of the fixing anchor bolt 25 is inserted into the through hole on the back beam 41, so that the hanging arm seat 24 can be fixed on the back beam 41. In this way, the oblique hanging arm 2 can play an auxiliary role in stabilizing and fixing the lifting platform 1, thereby enabling the lifting platform 1 to form a stable working platform. In addition, the way to adjust the length of the oblique hanging arm 2 is to loosen the second oblique hanging arm 23. Due to the threaded matching relationship between the support adjustment screw 22 and the second oblique hanging arm 23, the second oblique hanging arm 23 moves away from the first oblique hanging arm 21, thereby increasing the overall length of the oblique hanging arm 2, and realizing the adjustment of the length of the oblique hanging arm 2. When it is necessary to move up again, the oblique hanging arm 2 within the circular end range of the thin-walled hollow pier is retracted, and the personnel can temporarily stay on the cage ladder at the circular end. After moving up to the next platform height with the help of the crane lifting platform 1, the support rod 3 is placed on the back beam 41 of the inner template 4 again, and the hanging arm seat 24 is fixed to the back beam 41 of the previous section of the inner template 4, and the cycle is repeated.

[0036] When the thin-walled hollow pier is demolded downward, the lifting platform 1 uses the oblique hanging arm 2 as the main fixing device, and the support rod 3 extends outward and rests on the back beam 41 of the inner template 4 (including the inner template back beams at the two round ends) except the side where the mold is being demolded, and is fixed to the template through the soft anti-skid pad 32, so that the lifting platform 1 and the inner template 4 form a whole. After one side of the template is removed, the upper oblique hanging arm 2 is replaced to fix the position, and the templates of the remaining parts are removed. After the entire circle of inner molds are removed, the lifting platform 1 is lowered as a whole by a crane and fixed at the top to complete the position conversion, and this cycle can be repeated.

[0037] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.

Claims

1. A lifting platform suitable for working inside a hollow pier of a bridge, characterized in that: include: A rectangular lifting platform arranged horizontally; The oblique hanging arms are arranged around the lifting platform, and the oblique hanging arms include a first oblique hanging arm, an adjusting screw and a second oblique hanging arm. The bottom end of the first oblique hanging arm is rotatably connected to the lifting platform; the bottom end of the adjusting screw extends into the top of the first oblique hanging arm and is threadedly connected thereto, and the top of the adjusting screw extends into the bottom of the second oblique hanging arm and is threadedly connected thereto; Support rods are symmetrically arranged on both sides of the lifting platform and perpendicular to the length direction of the lifting platform.

2. The lifting platform suitable for working in hollow piers of bridges according to claim 1 is characterized in that: The lifting platform is formed by welding a plurality of rods; a circular ring is welded at the bottom end of the first oblique hanging arm, and the circular ring is sleeved on the rods of the lifting platform.

3. The lifting platform suitable for working in hollow piers of bridges according to claim 1 is characterized in that: The support rods are arranged at both side ends and the middle of the lifting platform.

4. The lifting platform suitable for working in hollow piers of bridges according to claim 1 is characterized in that: A connecting screw is arranged at the inner end of the support rod, the inner end of the connecting screw extends into the lifting platform and is threadedly connected thereto, and the outer end of the connecting screw extends into the support rod and is threadedly connected thereto.

5. The lifting platform suitable for working in hollow piers of bridges according to claim 1 is characterized in that: A soft anti-skid pad is fixed on the outer end of the support rod.

6. The lifting platform suitable for working in hollow piers of bridges according to claim 1, characterized in that: The oblique hanging arms are respectively arranged at intervals of four on both sides of the lifting platform and at intervals of two at both ends of the lifting platform.

7. The lifting platform suitable for working in hollow piers of bridges according to claim 1, characterized in that: A hanging arm seat is fixed to the top of the second oblique hanging arm, a vertical downward fixing anchor bolt is inserted into the hanging arm seat, and the lower end of the fixing anchor bolt passes through the hanging arm seat.

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