Hole top supporting and hoisting device for in-hole construction operation of post-pouring hole of bridge prefabricated pier and abutment

Abstract

The invention provides a hole top supporting and hoisting device for construction operation in a post-pouring hole of a bridge prefabricated abutment, which comprises a hole top fixing and supporting frame and a lifting mechanism mounted on the hole top fixing and supporting frame, the hole top fixing and supporting frame comprises connecting blocks, channel steel connecting pieces and a positioning assembly, the two ends of each connecting block are respectively connected with the channel steel connecting pieces, and the positioning assembly is connected with the channel steel connecting pieces. Forming a polygonal frame; the number of the positioning assemblies is at least three, and the positioning assemblies are used for abutting against the inner wall of the top of the hole, so that the polygonal frame is fixed to the top of the hole. The hole top supporting and hoisting device can be stably and fixedly installed above a post-pouring hole of a mass concrete bridge prefabricated pier and abutment, and the lifting and hoisting functions are provided. The device is easy to install and can be conveniently disassembled.

Description

Technical Field

[0001] The present invention belongs to the technical field of auxiliary construction devices for prefabricated bridge piers, and in particular relates to a hole top support and hoisting device for post-cast hole construction operations of prefabricated bridge piers. Background Art

[0002] Large-volume concrete precast piers are an important structural form of offshore highway bridge engineering. Figure 1 Large-volume concrete bridge precast piers have multiple holes 01, known as post-cast holes (because concrete needs to be poured into them when connecting to the cap foundation). Post-cast holes are the key connection between the precast components and the cap foundation. During assembly and construction, the large-volume concrete bridge precast piers are transported to the site for hoisting. The post-cast holes of the large-volume concrete bridge precast piers are then inserted into the cap foundation, and concrete is poured into the post-cast holes to achieve a stable connection between the precast piers and the cap foundation.

[0003] Chiseling the walls of the post-cast holes of the aforementioned large-volume concrete precast piers is an essential process. Chiseling creates indentations on the walls of the post-cast holes, thereby enhancing the interfacial bonding performance with the poured concrete, ensuring the integrity and durability of the structure, and improving construction quality and safety. Traditional chiseling processes involve either manual chiseling using a construction platform or an automated chiseling machine. Regardless of manual chiseling or automated chiseling machines, a hoisting device that can be stably fixed on the top of the post-cast hole is required to provide a lifting and hoisting function for the chiseling construction platform or the automated chiseling machine to adjust the construction position within the hole. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a hole top support hoisting device for post-cast hole construction work of prefabricated bridge piers.

[0005] The present invention is achieved through the following technical solutions: A hole top support and hoisting device for post-casting hole construction of prefabricated bridge piers comprises 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 a connecting block, a channel steel connector and a positioning assembly. The two ends of each connecting block are respectively connected to the channel steel connector to form a polygonal frame. The number of the positioning assemblies is at least 3. The positioning assembly is used to contact the inner wall of the hole top to achieve the fixation of the polygonal frame and the hole top. The positioning assembly includes a pair of vertically arranged guide rail plates, which are fixed to the connecting block through side plates. Symmetrical vertical track grooves are provided on the inner side walls of the pair of guide rail plates. Card blocks are installed in the vertical track grooves, and the card blocks touch the inner wall of the top of the hole; upper positioning pin holes and lower positioning pin holes are provided on the guide rail plates for positioning the card blocks.

[0006] In the above technical solution, the number of connecting blocks is 6, and the number of channel steel connecting pieces is 6.

[0007] In the above technical solution, the number of the positioning components is 3, and these 3 positioning components are arranged at intervals on 3 of the 6 connecting blocks, that is, these 3 positioning components are arranged on 3 connecting blocks distributed in a regular triangle.

[0008] 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.

[0009] In the above technical solution, the lifting mechanism includes: a lifting platform, an oblique support arm and a hoist. The lifting platform is fixedly installed on the top of the oblique support arm, the bottom of the oblique support arm is fixedly connected to the connecting block by bolts, and the hoist is installed on the lifting platform.

[0010] In the above technical solution, there are multiple, preferably 3, oblique support arms that are evenly distributed around the circumference.

[0011] In the above technical solution, a control box is also provided on the hoisting platform.

[0012] In the above technical solution, a rope sensor is also provided on the lifting platform to detect the lifting distance change data of the lifting rope.

[0013] In the above technical solution, a threading hole is opened on the lifting platform, which is used to pass the lifting rope of the hoist downward through the threading hole, and then connect to the construction work platform in the post-casting hole, thereby realizing the lifting and hoisting function of the construction work platform in the hole.

[0014] The advantages and beneficial effects of the present invention are: The hole-top support hoisting device of the present invention can be stably fixedly installed above the post-cast hole of a precast pier of a large-volume concrete bridge, and provides lifting and hoisting functions. Furthermore, the hole-top support hoisting device of the present invention does not require pre-embedded fixings in the precast pier to serve as the installation base of the hoisting device, nor does it require drilling holes in the hole top of the precast pier to install fixing bolts as the installation and connection base of the hoisting device. The present invention is simple to install and can be easily disassembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of precast piers of large-volume concrete bridges.

[0016] Figure 2 It is a schematic diagram of the usage status of the hole top support lifting device.

[0017] Figure 3 It is a structural diagram of the hole top fixed support frame of the hole top support lifting device.

[0018] Figure 4 It is a structural diagram of the positioning component of the hole top fixed support frame.

[0019] Figure 5 It is a structural diagram of the lifting mechanism of the hole top support lifting device.

[0020] For ordinary technicians in this field, other relevant drawings can be obtained based on the above drawings without any creative work. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the present invention are further described below with reference to specific embodiments.

[0022] A hole top support hoisting device for post-casting hole construction of prefabricated bridge piers, see attached 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-casting hole 01 of the prefabricated pier of a large-volume concrete bridge, and the lifting mechanism 12 is used to provide lifting and hoisting functions.

[0023] See attached Figure 3 The hole top fixing support frame 11 includes a connecting block 1101, a channel steel connecting piece 1102 and a positioning assembly 1103. The number of connecting blocks 1101 is 6, and the number of channel steel connecting pieces 1102 is 6. The two ends of each connecting block 1101 are respectively connected to the channel steel connecting piece 1102, thereby forming a polygonal frame; the number of the positioning assemblies 1103 is 3, and these 3 positioning assemblies 1103 are spaced apart on 3 of the 6 connecting blocks 1101, that is, these 3 positioning assemblies 1103 are arranged on 3 connecting blocks 1101 distributed in a regular triangle; further speaking, the positioning assembly 1103 is arranged on the side wall of the connecting block 1101 facing the center direction of the post-casting hole (it can also be understood as being arranged on the inner side wall of the connecting block 1101, where "inside" refers to the inner side of the polygonal frame); these 3 positioning assemblies 1103 are all used to touch the top inner wall of the post-casting hole, thereby realizing the fixation of the polygonal frame and the post-casting hole.

[0024] See attached Figure 4The positioning assembly 1103 includes a pair of vertically arranged guide rail plates 11031, which are fixed to the connecting block 1101 through side plates 11032. Symmetrical vertical track grooves 11033 are provided on the inner side walls of the guide rail plates 11031. Clamping blocks 11034 are installed in the vertical track grooves 11033, and the clamping blocks 11034 touch the top inner wall of the post-casting hole; upper positioning pin holes 11035 and lower positioning pin holes 11036 are provided on the guide rail plates 11031 for aligning the clamping blocks 110 34 is positioned, and a pin hole is also provided on the block 11034. When the block 11034 contacts the top inner wall of the post-casting hole, a positioning pin is inserted into the lower positioning pin hole 11036 to lock the block 11034 in this position. When it is necessary to remove the hole top fixing support frame 11, the positioning pin in the lower positioning pin hole 11036 is pulled out, and the block 11034 is slid upward to align the pin hole of the block 11034 with the upper positioning pin hole 11035. Then, a positioning pin is inserted into the upper positioning pin hole 11035 to lock the block 11034 in this position. Furthermore, the bottom of the vertical track groove 11033 is cut off, so the block 11034 will not fall off downwards. The top of the vertical track groove 11033 is transparent, and the block 11034 is installed into it from the top of the vertical track groove 11033. Furthermore, the connecting block 1101 includes an upper rectangular steel tube 11011, a lower rectangular steel tube 11012, a left trapezoidal steel tube 11013 and a right trapezoidal steel tube 11014. The upper rectangular steel tube 11011 is fixedly installed on the upper part of the lower rectangular steel tube 11012, the left trapezoidal steel tube 11013 is fixedly connected to the left side of the lower rectangular steel tube 11012, and the right trapezoidal steel tube 11014 is fixedly connected to the right side of the lower rectangular steel tube 11012. The left trapezoidal steel tube 11013 and the right trapezoidal steel tube 11014 are used to connect the channel steel connector 1102 by bolts to achieve a detachable connection with the channel steel connector 1102, thereby facilitating the disassembly and assembly of the hole top fixed support frame 11.

[0025] See attached Figure 5 The lifting mechanism 12 includes: a lifting platform 1201, an oblique support arm 1202, a hoist 1203, a rope sensor 1204 and a control box 1205. The number of the oblique support arms 1202 is preferably 3. The lifting platform 1201 is fixedly installed on the top of the three oblique support arms 1202, so that the lifting platform 1201 is located at the top center position of the post-casting hole. The bottom of the oblique support arm 1202 is fixedly connected to the connecting block 1101 by bolts. The hoist 1203, the rope sensor 1204 and the control box 1205 are all installed on the lifting platform 1201. A threading hole is opened on the lifting platform for passing the lifting rope 4 of the hoist downward through the threading hole (see attached Figure 1), and then connected to the construction work platform in the post-casting hole to realize the lifting and hoisting function of the construction work platform in the hole. The pull rope sensor is used to detect the lifting distance change data of the lifting rope.

[0026] For ease of explanation, spatial relative terms such as "upper", "lower", "left", and "right" are used in the embodiments to illustrate the relationship between one element or feature shown in the figures and another element or feature. It should be understood that, in addition to the orientation 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 figure is inverted, the element described as being "under" other elements or features will be positioned "above" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0027] Moreover, relational terms such as “first” and “second” are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any actual relationship or order between these components.

[0028] The above is an exemplary description of the present invention. It should be noted that, without departing from the core of the present invention, any simple deformation, modification or other equivalent replacement that can be made by other skilled in the art without expending creative labor falls within the scope of protection of the present invention.

Claims

1. A hole top support hoisting device for post-casting hole construction of prefabricated bridge piers, characterized by: It 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 a connecting block, a channel steel connector and a positioning assembly. The two ends of each connecting block are respectively connected to the channel steel connector to form a polygonal frame. The number of the positioning assemblies is at least 3. The positioning assembly is used to contact the inner wall of the hole top to achieve the fixation of the polygonal frame and the hole top. The positioning assembly includes a pair of vertically arranged guide rail plates, which are fixed to the connecting block through side plates. Symmetrical vertical track grooves are provided on the inner side walls of the pair of guide rail plates. Card blocks are installed in the vertical track grooves, and the card blocks touch the inner wall of the top of the hole; upper positioning pin holes and lower positioning pin holes are provided on the guide rail plates for positioning the card blocks.

2. The hole top support and hoisting device for post-casting hole construction of prefabricated bridge piers according to claim 1 is characterized by: The number of connecting blocks is 6, and the number of channel steel connecting pieces is 6.

3. The hole top support and hoisting device for post-casting hole construction of prefabricated bridge piers according to claim 2 is characterized by: The number of the positioning components is 3, and the 3 positioning components are arranged at intervals on 3 of the 6 connection blocks.

4. The hole top support and hoisting device for post-casting hole construction of prefabricated bridge piers according to claim 1 is characterized by: The positioning assembly is arranged on a side wall of the connecting block facing the center direction of the hole.

5. The hole top support and hoisting device for post-casting hole construction of prefabricated bridge piers according to claim 1 is characterized by: The lifting mechanism includes: a lifting platform, an oblique support arm and a hoist. The lifting platform is fixedly installed on the top of the oblique support arm, the bottom of the oblique support arm is fixedly connected to the connecting block by bolts, and the hoist is installed on the lifting platform.

6. The hole top support and hoisting device for post-casting hole construction of prefabricated bridge piers according to claim 5, characterized in that: There are multiple oblique support arms, which are evenly distributed around the circumference.

7. The hole top support and hoisting device for post-casting hole construction of prefabricated bridge piers according to claim 5, characterized in that: A control box is also provided on the lifting platform.

8. The hole top support and hoisting device for post-casting hole construction of prefabricated bridge piers according to claim 5, characterized in that: A rope sensor is also provided on the lifting platform to detect the lifting distance change data of the lifting rope.

9. The hole top support and hoisting device for post-casting hole construction of prefabricated bridge piers according to claim 5, characterized in that: A threading hole is provided on the hoisting platform for passing the hoisting rope of the hoist downward through the threading hole.

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