Bridge precast pier post-pouring hole hole top support hoisting device

Abstract

The application provides a hole top supporting and hoisting device for post-pouring hole in-situ construction of a bridge prefabricated pier, which comprises a hole top fixed supporting frame and a lifting mechanism installed on the hole top fixed supporting frame, the hole top fixed supporting frame comprises connecting blocks, channel steel connecting pieces and positioning assemblies, two ends of each connecting block are connected with the channel steel connecting pieces respectively to form a polygonal frame, the number of the positioning assemblies is at least three, the positioning assemblies are used for abutting against the inner wall of the hole top to fix the polygonal frame with the hole top, and the hole top supporting and hoisting device can be stably fixed and installed above the post-pouring hole of the mass concrete bridge prefabricated pier and provide the lifting and hoisting function. The hole top supporting and hoisting device is simple to install and can be conveniently disassembled.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of auxiliary construction devices for bridge precast piers, and particularly relates to a hole top support hoisting device for in-hole construction of a bridge precast pier. BACKGROUND

[0002] The large-volume concrete bridge precast pier is an important structure form of offshore highway bridge engineering, and as shown in the accompanying drawings, Figure 1 The large-volume concrete bridge precast pier has a plurality of holes 01, which are called post-pouring holes (since concrete needs to be poured into the holes when connected with the pile cap foundation later, they are called post-pouring holes), and the post-pouring holes are key parts connecting the precast member and the pile cap foundation. In the assembly construction, the large-volume concrete bridge precast pier is transported to the site for hoisting, so that the post-pouring holes of the large-volume concrete bridge precast pier are inserted with the pile cap foundation, and concrete is poured into the post-pouring holes to realize stable connection of the precast pier and the pile cap foundation.

[0003] It is an essential process to chisel the wall of the post-pouring hole of the large-volume concrete bridge precast pier. The chiseling forms indentations on the wall of the post-pouring hole, thereby enhancing the interfacial bonding performance between the post-pouring hole and the poured concrete, ensuring the integrity and durability of the structure, and improving the construction quality and safety. The traditional chiseling process is a construction operation platform + manual chiseling method, or a method of using an automatic chiseling machine. Regardless of manual chiseling or using an automatic chiseling machine, a hoisting device capable of being stably fixed and installed on the top of the post-pouring hole is needed to provide lifting and hoisting function for the chiseling construction operation platform or the automatic chiseling machine to adjust the construction operation position in the hole. SUMMARY

[0004] The purpose of the present application is to overcome the shortcomings of the prior art and provide a hole top support hoisting device for in-hole construction of a bridge precast pier.

[0005] The present application is realized by the following technical solutions:

[0006] A hole top support hoisting device for in-hole construction of a bridge precast pier, comprising a hole top fixed support frame and a lifting mechanism installed on the hole top fixed support frame,

[0007] The hole top fixed support frame comprises a connecting block, a channel steel connecting piece and a positioning assembly. The two ends of each connecting block are connected with the channel steel connecting piece, respectively, to form a polygonal frame. The number of the positioning assemblies is at least three. The positioning assemblies are used to touch the inner wall of the top of the hole to fix the polygonal frame with the top of the hole.

[0008] The positioning assembly comprises a pair of vertically arranged guide rail plates, the pair of guide rail plates are fixed on the connecting blocks through side plates, symmetrical vertical rail grooves are arranged on the inner side walls of the pair of guide rail plates, clamping blocks are installed in the vertical rail grooves, and the clamping blocks are in top contact with the inner walls of the hole top portions through the clamping blocks; upper positioning pin holes and lower positioning pin holes are arranged on the guide rail plates and used for positioning the clamping blocks.

[0009] In the above technical solution, the number of connecting blocks is 6, and the number of channel steel connecting pieces is 6.

[0010] In the above technical solution, the number of positioning assemblies is 3, and the three positioning assemblies are arranged at intervals on three of the six connecting blocks, that is, the three positioning assemblies are arranged on the three connecting blocks which are distributed in a regular triangle.

[0011] In the above technical solution, the positioning assembly is arranged on the side wall of the connecting block facing the center direction of the hole.

[0012] In the above technical solution, the lifting mechanism comprises a hoisting platform, an inclined support arm and a lifting machine, the hoisting platform is fixedly installed at the top of the inclined support arm, the bottom of the inclined support arm is fixedly connected to the connecting block through bolts, and the lifting machine is installed on the hoisting platform.

[0013] In the above technical solution, the number of inclined support arms is multiple, preferably three, and the three inclined support arms are uniformly distributed in a circle.

[0014] In the above technical solution, a control box is further arranged on the hoisting platform.

[0015] In the above technical solution, a pull rope sensor is further arranged on the hoisting platform and used for detecting the lifting distance change data of the hoisting rope.

[0016] In the above technical solution, a threading hole is formed in the hoisting platform, the hoisting rope of the lifting machine passes downward through the threading hole, and then connects to the construction operation platform in the post-cast hole, so as to realize the lifting and hoisting function of the construction operation platform in the hole.

[0017] The advantages and beneficial effects of the present application are as follows:

[0018] The hole top supporting and hoisting device of the present application can be stably fixed and installed above the post-cast hole of the large-volume concrete bridge precast pier, and provides a lifting and hoisting function. Moreover, the hole top supporting and hoisting device of the present application does not need to pre-bury a fixing piece on the precast pier as an installation base of the hoisting device, nor needs to drill a hole on the top of the precast pier and install a fixing bolt as an installation and connection base of the hoisting device. The present application is simple to install and can be conveniently disassembled. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1This is a schematic diagram of precast piers for large-volume concrete bridges.

[0020] Figure 2 This is a schematic diagram showing the usage status of the hole top support hoisting device.

[0021] Figure 3 This is a schematic diagram of the hole top fixed support frame of the hole top support hoisting device.

[0022] Figure 4 This is a schematic diagram of the positioning assembly of the hole top fixed support frame.

[0023] Figure 5 This is a schematic diagram of the lifting mechanism of the hole top support hoisting device.

[0024] For those skilled in the art, other related figures can be obtained from the above figures without any creative effort. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below with reference to specific embodiments.

[0026] A hole-top support hoisting device for post-cast hole construction operations in bridge precast piers, see attached document. Figure 2 The device includes: a hole top fixed support frame 11 and a lifting mechanism 12 installed on the hole top fixed support frame 11. The hole top fixed support frame 11 is used to be fixedly installed above the post-cast hole 01 of the precast pier of a large-volume concrete bridge. The lifting mechanism 12 is used to provide lifting and hoisting functions.

[0027] See appendix Figure 3 The hole-top fixing support frame 11 includes connecting blocks 1101, channel steel connectors 1102, and positioning components 1103. There are six connecting blocks 1101 and six channel steel connectors 1102. Each connecting block 1101 is connected to a channel steel connector 1102 at both ends, thus forming a polygonal frame. There are three positioning components 1103, which are spaced apart on three of the six connecting blocks 1101, i.e., they are arranged in an equilateral triangle pattern. Furthermore, the positioning components 1103 are located on the sidewall of the connecting block 1101 facing the center of the post-pouring hole (or, as can be understood, on the inner sidewall of the connecting block 1101, where "inner" refers to the inner side of the polygonal frame). These three positioning components 1103 are used to contact the top inner wall of the post-pouring hole, thereby fixing the polygonal frame to the post-pouring hole.

[0028] See appendix Figure 4The positioning component 1103 includes a pair of vertically arranged guide rail plates 11031, which are fixed to the connecting block 1101 by side plates 11032. Symmetrical vertical track grooves 11033 are provided on the inner walls of the guide rail plates 11031. A locking block 11034 is installed in each of the vertical track grooves 11033, and the locking block 11034 abuts against the top inner wall of the post-cast hole. An upper positioning pin hole 11035 and a lower positioning pin hole 11036 are provided on the guide rail plates 11031 for engaging the locking block 11031. 34. Positioning is performed. The locking block 11034 also has a pin hole. When the locking block 11034 touches the top inner wall of the post-cast hole, a positioning pin is inserted into the downward positioning pin hole 11036 to lock the locking block 11034 in that position. When it is necessary to remove the hole top fixing support bracket 11, the positioning pin in the lower positioning pin hole 11036 is pulled out, and the locking block 11034 is slid upwards so that the pin hole of the locking block 11034 aligns with the upper positioning pin hole 11035. Then, a positioning pin is inserted into the upper positioning pin hole 11035 to lock the locking block 11034 in that position. Furthermore, the bottom of the vertical track groove 11033 is closed, preventing the locking block 11034 from falling downwards; the top of the vertical track groove 11033 is open, allowing the locking block 11034 to be inserted from the top of the vertical track groove 11033. Furthermore, the connecting block 1101 includes an upper rectangular steel pipe 11011, a lower rectangular steel pipe 11012, a left trapezoidal steel pipe 11013, and a right trapezoidal steel pipe 11014. The upper rectangular steel pipe 11011 is fixedly installed on the upper part of the lower rectangular steel pipe 11012. The left trapezoidal steel pipe 11013 is fixedly connected to the left side of the lower rectangular steel pipe 11012, and the right trapezoidal steel pipe 11014 is fixedly connected to the right side of the lower rectangular steel pipe 11012. The left trapezoidal steel pipe 11013 and the right trapezoidal steel pipe 11014 are used to connect the channel steel connector 1102 by bolts, so as to realize the detachable connection with the channel steel connector 1102, thereby facilitating the disassembly and assembly of the hole top fixed support frame 11.

[0029] See appendix Figure 5 The lifting mechanism 12 includes: a hoisting platform 1201, inclined support arms 1202, a hoist 1203, a rope sensor 1204, and a control box 1205. Preferably, there are three inclined support arms 1202. The hoisting platform 1201 is fixedly installed on top of the three inclined support arms 1202, positioning it at the top center of the post-cast hole. The bottom of each inclined support arm 1202 is bolted to a connecting block 1101. The hoist 1203, rope sensor 1204, and control box 1205 are all mounted on the hoisting platform 1201. A wire-passing hole is provided on the hoisting platform for the hoisting rope 4 to pass downwards through this hole (see attached diagram). Figure 1This connects to the construction platform inside the post-cast hole, enabling the lifting and hoisting of the construction platform within the hole. The rope sensor is used to detect changes in the lifting distance of the hoisting rope.

[0030] For ease of explanation, spatial relative terms such as “up,” “down,” “left,” and “right” are used in the embodiments to describe the relationship of one element or feature shown in the figures relative to another element or feature. It should be understood that, in addition to the orientations shown in the figures, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figures is inverted, an element described as being “down” of other elements or features would be positioned “up” of those other elements or features. Therefore, the exemplary term “down” can encompass both up and down orientations. The device may be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0031] Moreover, relational terms such as “first” and “second” are used merely to distinguish one component from another that has the same name, without necessarily requiring or implying any such actual relationship or order between the components.

[0032] The present invention has been described above by way of example. It should be noted that any simple modifications, alterations or other equivalent substitutions that can be made by those skilled in the art without creative effort without departing from the core of the present invention fall within the protection scope of the present invention.

Claims

1. A hole top support hoisting device for construction operations inside the post-cast holes of precast bridge piers, characterized in that: Includes a hole top fixed support frame and a lifting mechanism installed on the hole top fixed support frame; The hole top fixing support frame includes connecting blocks, channel steel connectors, and positioning components. Each connecting block is connected to the channel steel connectors at both ends to form a polygonal frame. The number of positioning components is at least three. The positioning components are used to contact the inner wall of the top of the hole to fix the polygonal frame to the top of the hole. The positioning component includes a pair of vertically arranged guide rails, which are fixed to the connecting block by side plates. Symmetrical vertical track grooves are provided on the inner sidewalls of the guide rails. A locking block is installed in the vertical track groove and contacts the inner wall of the top of the hole by the locking block. An upper positioning pin hole and a lower positioning pin hole are provided on the guide rails for positioning the locking block. The lifting mechanism includes: a hoisting platform, an inclined support arm, and a hoist. The hoisting platform is fixedly installed on the top of the inclined support arm, and the bottom of the inclined support arm is fixedly connected to the connecting block by bolts. The hoist is installed on the hoisting platform. There are multiple inclined support arms, which are evenly distributed around the circumference.

2. The hole top support hoisting device for construction operations inside the post-cast holes of precast bridge piers according to claim 1, characterized in that: There are 6 connecting blocks and 6 channel steel connectors.

3. The hole top support hoisting device for post-cast hole construction operations in bridge precast piers according to claim 2, characterized in that: The number of positioning components is 3, and these 3 positioning components are spaced apart on 3 of the 6 connecting blocks.

4. The hole top support hoisting device for construction operations inside the post-cast holes of bridge precast piers according to claim 1, characterized in that: The positioning component is located on the side wall of the connecting block facing the center of the hole.

5. The hole top support hoisting device for construction operations inside the post-cast holes of bridge precast piers according to claim 1, characterized in that: A control box is also installed on the hoisting platform.

6. The hole top support hoisting device for construction operations inside the post-cast holes of precast bridge piers according to claim 1, characterized in that: The hoisting platform is also equipped with a rope sensor to detect changes in the lifting distance of the hoisting rope.

7. The hole top support hoisting device for construction operations inside the post-cast holes of precast bridge piers according to claim 1, characterized in that: The hoisting platform has a cable threading hole for the hoisting rope to pass through downwards.

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