Confined space internal wall milling and grooving device

Abstract

This utility model discloses a confined space inner wall milling and grooving device, which includes a traveling mechanism, a milling support, at least two push rod assemblies, and a milling mechanism. The traveling mechanism includes a traveling frame, on which a battery pack, an intelligent control cabinet, and a dust collector are mounted. An eight-shaped support is provided below the traveling frame. The milling support includes a middle support and two annular supports. The middle support is rotatably mounted on the traveling frame, and its two ends are respectively connected to the annular supports. At least two push rod assemblies are symmetrically arranged on the two annular supports. The milling mechanism includes an electric slide, a drive motor, a belt, and a cutting saw blade. The two sides of the electric slide are respectively arranged on the two push rod assemblies. The drive motor drives the cutting saw blade to rotate through the belt. The dust collector's suction port is located near the cutting saw blade. The intelligent control cabinet is connected to the dust collector, the milling support, the push rod assemblies, and the milling mechanism.

Description

Technical Field

[0001] This utility model relates to the technical field of water pipeline reinforcement, specifically to a milling and grooving device for the inner wall of a confined space. Background Technology

[0002] With the increasing urgency of urban drinking water problems, the application of ultra-large diameter water transmission pipelines is becoming more and more common.

[0003] However, due to the cyclical changes in internal pressure, water pipelines are prone to deformation, which can cause cracks in the concrete protective layer and corrosion and leakage, reducing the pressure-bearing capacity of the water pipelines and leading to ruptures or bursts.

[0004] When reinforcing ultra-large diameter water pipelines, it is necessary to first groove the concrete surface of the welded steel cylinder according to the specified dimensions to expose the steel pipe before reinforcing the inner diameter of the steel pipe.

[0005] In existing technologies, manual excavation using simple cutting equipment is inefficient, noisy, generates dust, and is difficult to collect waste and wastewater. In addition, construction workers need to build scaffolds for high-altitude operations, which poses a risk of falling from the arc-shaped cross-section. Furthermore, the method suffers from problems such as large concrete grooves, insufficient cutting precision, large subsequent restoration work areas, and long maintenance cycles. Utility Model Content

[0006] The purpose of this invention is to provide a milling and grooving device for the inner wall of a confined space, which can achieve precise milling of cement surfaces inside water pipelines at fixed points, thereby improving work efficiency and avoiding the risks of working at heights.

[0007] Therefore, embodiments of this utility model propose a milling and grooving device for the inner wall of a limited space.

[0008] According to an embodiment of the present invention, a confined space inner wall milling and grooving device includes a traveling mechanism, a milling support, at least two push rod assemblies, and a milling mechanism.

[0009] The traveling mechanism includes a traveling frame on which a battery pack, an intelligent control cabinet, and a dust collector are mounted. A figure-eight bracket is located below the traveling frame, and a traveling wheel is mounted at the end of the figure-eight bracket. The milling bracket includes a central bracket and two annular brackets. The central bracket is rotatably mounted on the traveling frame, and its two ends are respectively connected to the annular brackets. At least two push rod assemblies are symmetrically arranged on the two annular brackets. The milling mechanism includes an electric slide, a drive motor, a belt, and a cutting saw blade. The two sides of the electric slide are respectively arranged on the two push rod assemblies. The drive motor and the cutting saw blade are mounted on the electric slide, and the drive motor drives the cutting saw blade to rotate via the belt. The dust collector's suction port is located near the cutting saw blade. The battery pack is connected to the intelligent control cabinet, which is connected to the dust collector, the milling bracket, the push rod assemblies, and the milling mechanism.

[0010] In some embodiments, there are two figure-eight brackets, which are respectively disposed at the front end and rear end of the vehicle frame; the figure-eight bracket includes a square frame and two support legs, the square frame is disposed at the lower end of the vehicle frame, and the two support legs are mounted on the square frame in a figure-eight shape.

[0011] In some embodiments, the figure-eight bracket is further provided with a walking motor, which is connected to the walking wheel.

[0012] In some embodiments, there are multiple cutting saw blades connected in series; preferably, the cutting saw blades are diamond saw blades, and the spacing between adjacent cutting saw blades is 3 mm.

[0013] In some embodiments, the milling mechanism further includes a protective cover fitted around the outer periphery of the cutting saw blade, and the dust collector's suction port is disposed inside the protective cover.

[0014] In some embodiments, the confined space inner wall milling and grooving device further includes a monitoring component, which includes a position sensor and a first monitoring camera.

[0015] In some embodiments, a gyroscope and a second monitoring camera are also installed on the walking frame.

[0016] In some embodiments, the confined space inner wall milling and grooving device further includes a rotary guide rail, which is sleeved on the traveling frame, and the intermediate support is installed on the rotary guide rail.

[0017] In some embodiments, there are multiple milling mechanisms, with multiple push rod assemblies symmetrically arranged on two annular supports, and one milling mechanism installed between every two push rod assemblies.

[0018] In some embodiments, the confined space inner wall milling and grooving device further includes a remote terminal, which is wirelessly connected to the intelligent control cabinet.

[0019] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Other features and aspects of this disclosure will become clearer from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a perspective view of a confined space inner wall milling and grooving device according to an embodiment of the present utility model.

[0022] Figure 2 This is a side view of a confined space inner wall milling and grooving device according to an embodiment of the present utility model.

[0023] Figure 3 This is a perspective view of the walking mechanism according to an embodiment of the present utility model.

[0024] Figure 4 This is a perspective view of a milling bracket according to an embodiment of the present utility model.

[0025] Figure 5 This is a perspective view of a milling mechanism according to an embodiment of the present utility model.

[0026] Figure 6 This is a side view of a milling mechanism according to an embodiment of the present utility model.

[0027] Figure label:

[0028] The confined space interior wall milling and grooving device 100, battery pack 101, intelligent control cabinet 102, dust collector 103, walking mechanism 10, walking frame 11, figure-eight bracket 12, square frame 121, support leg 122, walking wheel 13, walking motor 14, milling bracket 20, intermediate bracket 21, ring bracket 22, push rod assembly 30, milling mechanism 40, electric slide table 41, drive motor 42, belt 43, cutting saw blade 44, protective cover 45, and monitoring component 50. Detailed Implementation

[0029] The technical solution of this utility model will be clearly and completely described below with reference to specific implementation schemes. However, those skilled in the art should understand that the implementation schemes described below are only for illustrating this utility model and should not be regarded as limiting the scope of this utility model. Based on the implementation schemes in this utility model, all other implementation schemes obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] The existing method of reinforcing the steel pipes inside ultra-large diameter water pipes involves manually excavating the steel pipes using simple cutting equipment. This method is inefficient, noisy, generates dust, and makes it difficult to collect waste residue and wastewater. At the same time, construction workers need to build scaffolds for high-altitude operations, and there is a risk of falling from the arc-shaped cross-section. The use of simple machinery also results in large concrete grooves, insufficient cutting precision, large subsequent restoration work areas, and long maintenance cycles.

[0031] like Figure 1 As shown in Figure 6, the confined space inner wall milling and grooving device 100 according to an embodiment of the present invention includes a traveling mechanism 10, a milling support 20, at least two push rod assemblies 30 and a milling mechanism 40.

[0032] The traveling mechanism 10 includes a traveling frame 11, on which a battery pack 101, an intelligent control cabinet 102, and a dust collector 103 are mounted. A figure-eight bracket 12 is provided below the traveling frame 11, and a traveling wheel 13 is installed at the end of the figure-eight bracket 12.

[0033] The milling support 20 includes a middle support 21 and two annular supports 22. The middle support 21 is rotatably mounted on the traveling frame 11, and the two ends of the middle support 21 are respectively connected to the annular supports 22.

[0034] At least two push rod assemblies 30 are symmetrically arranged on two annular supports 22. The milling mechanism 40 includes an electric slide table 41, a drive motor 42, a belt 43, and a cutting saw blade 44. The two sides of the electric slide table 41 are respectively arranged on the two push rod assemblies 30. The drive motor 42 and the cutting saw blade 44 are installed on the electric slide table 41. The drive motor 42 drives the cutting saw blade 44 to rotate through the belt 43. The dust collector 103 has its suction port located near the cutting saw blade 44. The battery pack 101 is connected to the intelligent control cabinet 102. The intelligent control cabinet 102 is connected to the dust collector 103, the milling support 20, the push rod assembly 30, and the milling mechanism 40.

[0035] In some embodiments, there are two figure-eight brackets 12, which are respectively disposed at the front end and rear end of the vehicle frame 11; the figure-eight bracket 12 includes a square frame and two support legs, the square frame is disposed at the lower end of the vehicle frame 11, and the two support legs are mounted on the square frame in a figure-eight shape.

[0036] In some embodiments, the figure-eight bracket 12 is also provided with a walking motor, which is connected to the walking wheel 13.

[0037] In some embodiments, there are multiple cutting saw blades 44 connected in series; preferably, the cutting saw blades 44 are diamond saw blades and the spacing between adjacent cutting saw blades 44 is 3 mm.

[0038] In some embodiments, the milling mechanism 40 further includes a protective cover 45, which is fitted around the outer periphery of the cutting saw blade 44, and the dust suction port of the dust collector 103 is disposed inside the protective cover 45.

[0039] In some embodiments, the confined space inner wall milling and grooving device 100 further includes a monitoring component 50, which includes a position sensor and a first monitoring camera.

[0040] In some embodiments, a gyroscope and a second monitoring camera are also installed on the vehicle frame 11.

[0041] In some embodiments, the confined space inner wall milling and grooving device 100 further includes a rotary guide rail, which is sleeved on the traveling frame 11, and the intermediate support 21 is installed on the rotary guide rail.

[0042] In some embodiments, there are multiple milling mechanisms 40, and multiple push rod assemblies 30 are symmetrically arranged on two annular supports 22, with a milling mechanism 40 installed between every two push rod assemblies 30.

[0043] In some embodiments, the confined space inner wall milling and grooving device 100 further includes a remote terminal, which is wirelessly connected to the intelligent control cabinet.

[0044] The confined space inner wall milling and grooving device 100 of this utility model can achieve precise milling of cement surface inside ultra-large diameter water pipes at fixed points. It can automatically adjust the milling speed, milling feed force, waste crushing and collection speed according to the milling position inside the pipe. At the same time, it can judge the time to reach the steel pipe position and mill the steel pipe according to the milling resistance, thereby improving the speed of cement surface milling inside the pipe and reducing environmental pollution.

[0045] The confined space inner wall milling and grooving device 100 of this utility model can be adapted to milling cement surfaces inside pipes with a diameter of 3 to 6m. It has a high degree of automation and can be operated remotely, reducing safety risks in confined spaces and high-altitude operations. At the same time, it achieves the advantages of construction efficiency of 1 revolution / 8h when milling a 4m pipe section to a depth of 100mm and low pollution.

[0046] This utility model's confined space inner wall milling and grooving device 100 addresses the problem of high hardness and difficulty in chiseling C50 concrete for ultra-large diameter pipeline sections. It features a milling mechanism with diamond saw blades connected in series for rapid and efficient cutting. Combined with an intelligent control system, it ensures precise grooving dimensions and standardized cuts. The device automatically tracks the inner arc surface of the pipeline section, automatically adjusts the cutting feed speed based on cutting resistance, intelligently detects the cutting resistance of concrete and steel to avoid damaging the inner surface of the steel pipe, and records the circumferential cutting trajectory of the pipeline section, the functional relationship between motor torque and radial and circumferential feed rates.

[0047] This utility model's confined space inner wall milling and grooving device 100 is designed to address the challenges of high hardness when chiseling C50 high-strength concrete pipe sections, where waste residue is scattered and difficult to collect when cutting different positions. The milling mechanism is equipped with an external protective cover to prevent waste residue from splashing and to collect the waste residue in a concentrated manner.

[0048] This utility model relates to a confined space internal wall milling and grooving device 100, which addresses the issue of saw blade strength damage caused by localized high temperatures during prolonged operation of the milling mechanism. It utilizes Φ400mm diamond circular saw blades with a base of 65Mn spring steel (tensile strength ≥980MPa). Diamond particles are welded to the saw blade tips to improve wear resistance. The saw blade spacing is set to 3mm, and lateral heat dissipation holes are provided to ensure airflow circulation and heat dissipation. The entire saw blade assembly undergoes G2.5 level dynamic balancing correction, with radial runout ≤0.1mm and cutting straightness error ≤0.5mm / m when temperature rise ≤40℃, further extending the milling machine's service life.

[0049] This utility model's confined space inner wall milling and grooving device 100 addresses the problem of inner arc milling in pipe sections, especially when the pipe has curved sections that are prone to deviation during operation, causing the entire device to follow a spiral path, resulting in inaccurate positioning and even equipment overturning. The device is designed with a figure-eight wheel structure for the movement mechanism, and is equipped with a gyroscope and a video monitoring system to achieve automatic correction of the movement status within the pipe. It can also be remotely controlled and the entire operation process can be tracked. The movement speed is adjustable within the range of 0-3 km / h.

[0050] This utility model's confined space inner wall milling and grooving device 100 addresses the problem of collecting and discharging waste slag generated during milling of the inner circular surface of ultra-large diameter water pipelines. It is equipped with a high-powered vacuum cleaner to receive the milling waste slag, and large pieces of waste slag are broken up using a breaking device and collected by a vacuum pump to a cleaning and dust removal device. After the collection is full, the waste slag is discharged from the pipeline to avoid water pollution.

[0051] The confined space inner wall milling and grooving device 100 of this utility model is designed to address the limitations of the manhole size for operations inside ultra-large diameter water pipelines. The total weight of the processing modules does not exceed 60kg. After the components are assembled, the device can be fully assembled with the help of the hoisting equipment at the manhole and then walk to the work area on its own. Disassembly is also carried out at the manhole and then lifted out of the manhole.

[0052] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0054] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0055] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0056] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0057] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A milling and grooving device for the inner wall of a confined space, characterized in that, The confined space inner wall milling and grooving device includes: The traveling mechanism includes a traveling frame on which a battery pack, an intelligent control cabinet, and a dust collector are mounted. An eight-shaped bracket is provided below the traveling frame, and a traveling wheel is installed at the end of the eight-shaped bracket. A milling support, comprising a central support and two annular supports, wherein the central support is rotatably mounted on the traveling frame and the two ends of the central support are respectively connected to the annular supports. At least two push rod assemblies are provided, and the at least two push rod assemblies are symmetrically arranged on the two annular supports. A milling mechanism, comprising an electric slide table, a drive motor, a belt, and a cutting saw blade, wherein the electric slide table is respectively mounted on two push rod assemblies on both sides, and the drive motor and the cutting saw blade are mounted on the electric slide table, and the drive motor drives the cutting saw blade to rotate via the belt; The dust collector's suction port is located near the cutting saw blade. The battery pack is connected to the intelligent control cabinet, which is connected to the dust collector, the milling bracket, the push rod assembly, and the milling mechanism.

2. The confined space inner wall milling and grooving device according to claim 1, characterized in that, The two figure-eight brackets are respectively disposed at the front end and the rear end of the traveling frame; The figure-eight bracket includes a square frame and two support legs. The square frame is located at the lower end of the vehicle frame, and the two support legs are mounted on the square frame in a figure-eight shape.

3. The confined space inner wall milling and grooving device according to claim 2, characterized in that, The figure-eight bracket is also equipped with a walking motor, which is connected to the walking wheel.

4. The confined space inner wall milling and grooving device according to claim 1, characterized in that, There are multiple cutting saw blades, and the multiple cutting saw blades are connected in series with each other; The cutting saw blade is a diamond saw blade, and the distance between adjacent cutting saw blades is 3mm.

5. The confined space inner wall milling and grooving device according to claim 1, characterized in that, The milling mechanism also includes a protective cover, which is fitted around the outer periphery of the cutting saw blade, and the dust collector's suction port is located inside the protective cover.

6. The confined space inner wall milling and grooving device according to claim 1, characterized in that, Also includes: A monitoring component, comprising a position sensor and a first monitoring camera.

7. The confined space inner wall milling and grooving device according to claim 1, characterized in that, The vehicle frame is also equipped with a gyroscope and a second monitoring camera.

8. The confined space inner wall milling and grooving device according to claim 1, characterized in that, Also includes: A rotary guide rail is fitted onto the traveling frame, and an intermediate support is mounted on the rotary guide rail.

9. The confined space inner wall milling and grooving device according to claim 1, characterized in that, There are multiple milling mechanisms, and multiple push rod assemblies are symmetrically arranged on the two annular supports, with one milling mechanism installed between every two push rod assemblies.

10. The confined space inner wall milling and grooving device according to claim 1, characterized in that, Also includes: A remote terminal is wirelessly connected to the intelligent control cabinet.

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