A circumferential rotating shaving device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-28
- Publication Date
- 2026-08-14
AI Technical Summary
[0005]大体积混凝土桥梁预制墩台后浇孔作业面为大直径的360度的圆弧形内孔作业面，现有的自动化的凿毛设备通常是适用于较为规整的平面凿毛作业，并不适用360度的圆弧形作业，即便能对圆弧面进行凿毛，其作业效率也很低
[0020]本实用新型的环向旋转凿毛作业装置用于对大体积混凝土桥梁预制墩台后浇孔进行旋转凿毛作业，有效取代人工，安全且高效。在旋转凿毛作业过程中，由孔内定位支撑机构提供稳定的支撑作用，有效克服作业时造成的晃动或倾斜问题。
Smart Images
Figure CN224631055U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of roughening treatment device for precast bridge piers, specifically relating to a circumferential rotating roughening operation device. Background Technology
[0002] Precast piers for large-volume concrete bridges are an important structural form in marine bridge engineering. These piers have multiple holes, which are called post-cast holes (because concrete needs to be poured into the holes when connecting them to the foundation piles). The post-cast holes are the key parts connecting the precast components and the foundation piles.
[0003] For the above-mentioned large-volume concrete bridge precast piers, roughening the wall of the post-cast hole is an essential process. Roughening creates a concave shape on the wall of the post-cast hole, thereby enhancing the interfacial bonding performance between the hole and the cast concrete, ensuring the integrity and durability of the structure, and improving construction quality and safety. At present, traditional manual roughening and simple mechanical roughening have many problems. For example, the traditional process is to use an operating platform + manual roughening, which has the following constraints: (1) During the roughening process, the concrete is in the process of hydration heat dissipation, and the temperature inside the hole is high (reaching 50-60℃). Manual workers must rest after less than 20 minutes of work, resulting in short working time; (2) The roughening process generates a lot of dust. Although there are safety protection measures, workers are in a dusty environment for a long time, which is not good for their health; (3) Workers' physical strength is consumed quickly during long-term work. It takes 1 day for 2 people to work on a single hole and 6 days for a single pier, resulting in low work efficiency.
[0004] Currently, some automated roughening equipment has emerged, but existing automated roughening equipment is not suitable for roughening the post-cast holes of precast piers and abutments of large-volume concrete bridges, and it faces the following technical challenges:
[0005] The working surface for post-cast holes in precast piers of large-volume concrete bridges is a large-diameter, 360-degree arc-shaped inner hole. Existing automated scabbing equipment is typically suitable for scabbing relatively regular flat surfaces, not for 360-degree arc-shaped surfaces. Even if it can scabbing arc surfaces, its efficiency is very low. Furthermore, existing automated scabbing equipment usually uses a single moving arm to support and drive the scabbing head. During scabbing, the scabbing head generates a significant reaction force on the arm. Ensuring that the arm provides a stable support foundation for the scabbing head is a technical challenge that needs to be addressed. Utility Model Content
[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a circumferential rotating chiseling device.
[0007] This utility model is achieved through the following technical solution:
[0008] A circumferential rotary burring device includes an in-hole positioning support mechanism and a circumferential rotary burring mechanism connected below the in-hole positioning support mechanism.
[0009] The in-hole positioning support mechanism includes a central seat and multiple sets of radial telescopic support arms evenly installed around the central seat. The ends of the radial telescopic support arms are used to abut against the inner wall of the post-cast hole, thereby fixing the in-hole positioning support mechanism inside the post-cast hole.
[0010] The circumferential rotary chiseling mechanism includes a central rotary table and multiple sets of radially telescopic chiseling arms evenly installed around the central rotary table. The ends of the radially telescopic chiseling arms are equipped with chiseling machines. The central rotary table is rotatably mounted directly below the central seat of the hole positioning support mechanism via a rotary support member. A drive motor is installed on the central seat to drive the central rotary table to rotate, thereby enabling the multiple sets of radially telescopic chiseling arms to perform rotary chiseling operations on the inner wall of the post-cast hole. During the rotary chiseling operation, the hole positioning support mechanism provides stable support.
[0011] In the above technical solution, the center seat includes an upper plate, a middle stiffener plate and a lower plate. The upper plate and the lower plate are disc-shaped and are arranged opposite each other. The middle stiffener plate is vertically connected between the upper plate and the lower plate. The first end of the radial telescopic support arm is fixedly installed between the upper plate and the lower plate by bolts, and the left and right sides of the first end of the radial telescopic support arm are respectively tightly attached to the middle stiffener plate, thereby ensuring the stable installation of the radial telescopic support arm and the center seat.
[0012] In the above technical solution, the central rotary table includes a top plate, a central rib plate, and a bottom plate. The top plate and bottom plate are disc-shaped and arranged opposite each other. The central rib plate is vertically connected between the top plate and the bottom plate. The head end of the radial telescopic chiseling arm is fixedly installed between the top plate and the bottom plate by bolts, and the left and right sides of the head end of the radial telescopic chiseling arm are respectively in close contact with the central rib plate, thereby ensuring the stable installation of the radial telescopic chiseling arm and the central rotary table. The top plate of the central rotary table and the lower plate of the central seat are connected by a rotating support. A drive motor is fixedly installed on the lower plate of the central seat, and the drive shaft of the drive motor is connected to the top plate of the central rotary table, thereby driving the central rotary table to rotate.
[0013] In the above technical solution, the radial telescopic support arm includes a first box section, a second box section, a first cylinder, and an end support block. Both the first and second box sections are long box structures. The first end of the first box section is fixedly connected to the center seat. The second box section is slidably installed coaxially with the first box section through a first sliding assembly. The end support block is fixedly installed at the end of the second box section away from the center seat. The first cylinder is fixedly installed inside the first box section. The actuating end of the first cylinder is connected to the inner wall of the second box section. The first cylinder is used to drive the second box section to slide in the first box section, thereby realizing the telescopic movement of the second box section in the first box section to adjust the length of the entire radial telescopic support arm.
[0014] In the above technical solution, a lifting lug is provided on the top of the first section of the radial telescopic support arm for connecting to the lifting rope.
[0015] In the above technical solution, the radial telescopic chiseling arm includes a first box arm, a second box arm, and a second cylinder. Both the first and second box arms are long box-shaped structures. The first end of the first box arm is fixedly connected to the central rotating platform. The second box arm is slidably mounted coaxially with the first box arm through a second sliding assembly. The second sliding assembly is preferably a combination of a limiting groove and a limiting block. An end mounting bracket is fixedly mounted at the end of the second box arm away from the central rotating platform. This end mounting bracket is used to mount the chiseling machine. The second cylinder is fixedly mounted inside the first box arm. The actuating end of the second cylinder is connected to the inner wall of the second box arm. The second cylinder is used to drive the second box arm to slide within the first box arm, thereby realizing the telescopic movement of the second box arm within the first box arm and adjusting the length of the entire radial telescopic chiseling arm.
[0016] In the above technical solution, the chiseling machine includes: a chiseling machine housing, a chiseling unit, and guide casters. The chiseling unit is fixedly mounted on the chiseling machine housing via a mounting base. The guide casters are fixedly mounted on the chiseling machine housing and are used to abut against the wall of the post-pouring hole to form a rolling support function.
[0017] In the above technical solution, there are 3 chiseling units arranged in a triangle. Each chiseling unit has 3 chiseling hammers arranged side by side, which are used to chisel the wall of the post-cast hole.
[0018] In the above technical solution, there are four guide casters, which are fixedly installed at the four corners of the chisel machine housing.
[0019] The advantages and beneficial effects of this utility model are as follows:
[0020] This utility model relates to a circumferential rotary chiseling device for rotary chiseling of post-cast holes in precast concrete bridge piers, effectively replacing manual labor and offering both safety and efficiency. During the rotary chiseling process, a positioning support mechanism inside the hole provides stable support, effectively overcoming any swaying or tilting issues that may occur during operation. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the circumferential rotary chiseling device of this utility model.
[0022] Figure 2 This is a schematic diagram of the construction state of the circumferential rotating chiseling device of this utility model, which is hoisted by a gantry frame.
[0023] Figure 3 This is a schematic diagram of the combined structure of the central seat of the in-hole positioning support mechanism and the central rotating table of the circumferential rotating roughening operation mechanism.
[0024] Figure 4 This is a cross-sectional schematic diagram of the combined structure of the central seat of the in-hole positioning support mechanism and the central rotating table of the circumferential rotating roughening operation mechanism.
[0025] Figure 5 This is a schematic diagram of the radial telescopic support arm of the in-hole positioning support mechanism;
[0026] Figure 6 This is a cross-sectional schematic diagram of the radial telescopic support arm of the in-hole positioning support mechanism.
[0027] Figure 7 This is a schematic diagram of the radial telescopic chiseling arm of the circumferential rotating chiseling mechanism.
[0028] Figure 8 This is a cross-sectional schematic diagram of the radial telescopic chiseling arm of the circumferential rotating chiseling mechanism.
[0029] Figure 9 This is a schematic diagram of a chiseling machine with a circumferential rotating chiseling mechanism;
[0030] Figure 10 This is a schematic diagram of the internal structure of a chiseling machine with a circumferential rotating chiseling mechanism.
[0031] For those skilled in the art, other related figures can be obtained from the above figures without any creative effort. Detailed Implementation
[0032] 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.
[0033] A circumferential rotary roughening device, see attached. Figure 1 It includes an in-hole positioning support mechanism 2 and a circumferential rotating roughening operation mechanism 3 connected below the in-hole positioning support mechanism.
[0034] The in-hole positioning support mechanism 2 includes a central seat 21 and multiple sets of radial telescopic support arms 22 evenly installed around the central seat (here, "radial" refers to the radial direction along the central seat, that is, the radial direction along the post-cast hole 1; "telescopic" means that the length of the support arm is adjustable; preferably, there are 3 sets of radial telescopic support arms). The ends of the radial telescopic support arms 22 are used to abut against the inner wall of the post-cast hole 1, thereby fixing the in-hole positioning support mechanism 2 inside the post-cast hole 1.
[0035] The circumferential rotary chiseling mechanism 3 includes a central rotary table 31 and multiple sets of radially telescopic chiseling arms 32 (preferably 4 sets) evenly installed around the central rotary table. The ends of the radially telescopic chiseling arms are equipped with chiseling machines 33. The central rotary table 31 is rotatably installed directly below the central seat 21 of the hole positioning support mechanism 2 via a rotary support member. A drive motor is installed on the central seat 21 to drive the central rotary table 31 to rotate, thereby realizing the rotary chiseling operation of multiple sets of radially telescopic chiseling arms on the inner wall of the post-cast hole 1. During the rotary chiseling operation, the hole positioning support mechanism 2 provides stable support.
[0036] During operation, the hole positioning support mechanism 2 of the circumferential rotary chiseling device of this invention is connected to the lifting rope 4. The lifting rope 4 is connected to the hoisting equipment (e.g., a crane). The circumferential rotary chiseling device is hoisted into the post-cast hole 1 to be chiseled. The working height of the circumferential rotary chiseling device can be controlled by the crane. At the required working height, the hole positioning support mechanism 2 is fixed in the post-cast hole 1. Then, the circumferential rotary chiseling mechanism 3 performs rotary chiseling on the inner wall of the post-cast hole 1. Alternatively, see the appendix. Figure 2 Alternatively, a support frame 5 can be erected on the top of the post-pouring hole 1, and a hoist 51 can be installed on the frame 5. The hoist 51 is connected to the hole positioning support mechanism 2 of the circumferential rotary chiseling device of this utility model through a suspension rope 4. The working height position of the circumferential rotary chiseling device can be controlled by the hoist 51.
[0037] As a preferred embodiment, the structure of the center seat 21 of the in-hole positioning support mechanism 2 can be as follows: (See Appendix) Figure 3The center seat 21 includes an upper plate 2101, a middle stiffener 2102, and a lower plate 2103. The upper plate 2101 and the lower plate 2103 are disc-shaped and are arranged opposite each other. The middle stiffener 2102 is vertically connected between the upper plate 2101 and the lower plate 2103. The first end of the radial telescopic support arm 22 is fixedly installed between the upper plate 2101 and the lower plate 2103 by bolts 2104. The left and right sides of the first end of the radial telescopic support arm 22 are respectively tightly attached to the middle stiffener 2102, thereby ensuring the stable installation of the radial telescopic support arm 22 and the center seat 21.
[0038] As a preferred embodiment, the structure of the central rotating platform 31 of the circumferential rotary chiseling mechanism 3 can be as follows: (See Appendix) Figure 3 and attached Figure 4 The central rotating platform 31 includes a top plate 3101, a central rib plate 3102, and a bottom plate 3103. The top plate 3101 and the bottom plate 3103 are disc-shaped and are arranged opposite each other. The central rib plate 3102 is vertically connected between the top plate 3101 and the bottom plate 3103. The head end of the radial telescopic chiseling arm 32 is fixedly installed between the top plate 3101 and the bottom plate 3103 by bolts 3104. The left and right sides of the head end of the radial telescopic chiseling arm 32 are respectively tightly attached to the central rib plate 3102, thereby ensuring the stable installation of the radial telescopic chiseling arm 32 and the central rotating platform 31. The central rotary table 31 is located directly below the central base 21. The top plate 3101 of the central rotary table 31 and the lower plate 2103 of the central base 21 are connected by a rotating support 2105. A drive motor 2106 is fixedly installed on the lower plate 2103 of the central base 21. The drive shaft of the drive motor 2106 is connected to the top plate 3101 of the central rotary table 31, thereby driving the central rotary table 31 to rotate. Furthermore, a motor cover 2107 is provided on the lower plate 2103 of the central base 21 to cover the drive motor 2106, which serves as a protective function.
[0039] As a preferred embodiment, the structure of the radial telescopic support arm 22 of the in-hole positioning support mechanism 2 can be as follows: (See Appendix) Figure 5 and attached Figure 6The radial telescopic support arm 22 includes a first box 2201, a second box 2202, a first cylinder 2203, and an end support block 2204. Both the first box 2201 and the second box 2202 are long box structures. The first end of the first box 2201 is fixedly connected to the center seat 21. The second box 2202 is slidably installed coaxially with the first box 2201 through a first sliding assembly 2205. The first sliding assembly is preferably a combination of a limiting groove and a limiting block. The end support block is fixedly installed at the end of the second box 2202 away from the center seat 21. Block 2204, the end support block 2204 is preferably made of rubber, and the end support block 2204 abuts against the wall of the post-pour hole to ensure a stable contact effect with the hole wall; the first cylinder 2203 is fixedly installed inside the first section box 2201, and the actuating end of the first cylinder 2203 is connected to the inner wall of the second section box 2202. The first cylinder 2203 is used to drive the second section box 2202 to slide in the first section box 2201, that is, to realize the telescopic movement of the second section box 2202 in the first section box 2201, so as to adjust the arm length of the entire radial telescopic support arm 22. Furthermore, a lifting lug 22011 is provided on the top of the first section box 2201 for connecting with the lifting rope 4.
[0040] As a preferred embodiment, the structure of the radially telescopic chiseling arm 32 of the circumferential rotary chiseling mechanism 3 can be as follows: (See Appendix) Figure 7 and attached Figure 8 The radial telescopic chiseling arm 32 includes a first box arm 3201, a second box arm 3202, and a second cylinder 3203. Both the first box arm 3201 and the second box arm 3202 are long box-shaped structures. The head end of the first box arm 3201 is fixedly connected to the central rotating table 31. The second box arm 3202 is slidably mounted coaxially with the first box arm 3201 via a second sliding assembly 3204. The second sliding assembly is preferably a combination of a limiting groove and a limiting block. The second box arm 3202 is located away from the central rotating table. One end of the turntable 31 is fixedly mounted with an end mounting bracket 3205, which is used to mount the chisel 33; a second cylinder 3203 is fixedly mounted inside the first section of the box arm 3201. The actuating end of the second cylinder 3203 is connected to the inner wall of the second section of the box arm 3202. The second cylinder 3203 is used to drive the second section of the box arm 3202 to slide in the first section of the box arm 3201, that is, to realize the extension and retraction movement of the second section of the box arm 3202 in the first section of the box arm 3201, so as to adjust the arm length of the entire radial extension chisel arm 32.
[0041] As a preferred embodiment, the structure of the shaving machine 33 can be as follows: (See Appendix) Figure 9 and attached Figure 10The chisel tool 33 includes: a chisel tool housing 3301, chisel units 3302, and guide casters 3303. The chisel units 3302 are fixedly mounted on the chisel tool housing 3301 via mounting bases 3304. There are three chisel units 3302 arranged in a triangular pattern. Each chisel unit 3302 has three chisel hammers arranged side-by-side, which are used to chisel the walls of the post-cast holes. There are four guide casters 3303, which are fixedly mounted at the four corners of the chisel tool housing 3301, guiding the flow of water. Casters 3303 are used to form a rolling support by contacting the wall of the post-cast hole. That is, after the radial telescopic chiseling arm is extended, after the guide casters 3303 contact the wall of the post-cast hole, the pressure (air pressure) of the second cylinder 3203 gradually increases. After reaching the set pressure, the set pressure is maintained, so that the chiseling machine 33 can adapt to different hole diameter changes of the post-cast hole and can stably contact the hole wall to perform chiseling operations, ensuring the uniformity of chiseling depth and operational stability. In addition, it plays a rolling guiding role during the rotary chiseling operation.
[0042] 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.
[0043] 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.
[0044] The present invention has been described above by way of example. It should be noted that, without departing from the core of the present invention, any simple modifications, alterations or other equivalent substitutions that can be made by those skilled in the art without creative effort fall within the protection scope of the present invention.
Claims
1. A circumferential rotary scalping device, characterized by: It includes an in-hole positioning support mechanism and a circumferential rotating roughening mechanism connected below the in-hole positioning support mechanism. The in-hole positioning support mechanism includes a central seat and multiple sets of radial telescopic support arms evenly installed around the central seat. The ends of the radial telescopic support arms are used to abut against the inner wall of the post-pouring hole. The circumferential rotary chiseling mechanism includes a central rotary table and multiple sets of radially telescopic chiseling arms evenly installed around the central rotary table. The ends of the radially telescopic chiseling arms are equipped with chiseling machines. The central rotary table is rotatably installed directly below the central seat of the hole positioning support mechanism via a rotary support member, and a drive motor is installed on the central seat to drive the central rotary table to rotate.
2. A ring-type rotary scalping tool according to claim 1, characterized in that: The center seat includes an upper plate, a middle stiffener plate, and a lower plate. The upper and lower plates are disc-shaped and are arranged opposite each other. The middle stiffener plate is vertically connected between the upper and lower plates. The first end of the radial telescopic support arm is fixedly installed between the upper and lower plates by bolts, and the left and right sides of the first end of the radial telescopic support arm are respectively close to the middle stiffener plate.
3. A ring-type rotary scalping tool according to claim 2, characterized in that: The central rotary table includes a top plate, a central rib plate, and a bottom plate. The top plate and bottom plate are disc-shaped and arranged opposite each other. The central rib plate is vertically connected between the top plate and the bottom plate. The head end of the radial telescopic chiseling arm is fixedly installed between the top plate and the bottom plate by bolts, and the left and right sides of the head end of the radial telescopic chiseling arm are respectively in close contact with the central rib plate. The top plate of the central rotary table and the lower plate of the central seat are connected by a rotating support. A drive motor is fixedly installed on the lower plate of the central seat, and the drive shaft of the drive motor is connected to the top plate of the central rotary table.
4. The ring-type rotary scalping tooling apparatus of claim 1, wherein: The radial telescopic support arm includes a first box section, a second box section, a first cylinder, and an end support block. Both the first and second box sections are long box structures. The first end of the first box section is fixedly connected to the center seat. The second box section is slidably installed coaxially with the first box section through a first sliding assembly. The end support block is fixedly installed at the end of the second box section away from the center seat. The first cylinder is fixedly installed inside the first box section. The actuating end of the first cylinder is connected to the inner wall of the second box section. The first cylinder is used to drive the second box section to slide within the first box section.
5. A ring-type rotary scalping tool according to claim 4, characterized in that: A lifting lug is provided at the top of the first section of the radial telescopic support arm for connecting to the lifting rope.
6. The ring-type rotary scalping tooling apparatus of claim 1, wherein: The radial telescopic chiseling arm includes a first box arm, a second box arm, and a second cylinder. Both the first and second box arms are long box-shaped structures. The first end of the first box arm is fixedly connected to a central rotating platform. The second box arm is slidably mounted coaxially with the first box arm via a second sliding assembly. An end mounting bracket is fixedly mounted on the end of the second box arm away from the central rotating platform. This end mounting bracket is used to mount the chiseling machine. The second cylinder is fixedly mounted inside the first box arm. The actuating end of the second cylinder is connected to the inner wall of the second box arm. The second cylinder is used to drive the second box arm to slide within the first box arm.
7. The circumferential rotary chiseling device according to claim 1, characterized in that: The chipping machine includes: a chipping machine housing, a chipping unit, and guide casters. The chipping unit is fixedly mounted on the chipping machine housing via a mounting base; the guide casters are fixedly mounted on the chipping machine housing.
8. A ring-type rotary scalping tool according to claim 7, characterized in that: There are 3 chiseling units arranged in a triangle, and each chiseling unit has 3 chiseling hammers arranged side by side.
9. The ring-type rotary scalping tooling apparatus of claim 7, wherein: The number of guide casters is 4, which are respectively fixedly installed at the four corner positions of the goughing machine shell.