Rolling support suitable for endoscope detection of inner wall of multi-diameter pipeline

Abstract

The utility model belongs to the field of mechanical design, and particularly relates to a rolling support suitable for multi-caliber pipeline inner wall endoscope detection, which comprises a threading sleeve, and the threading sleeve comprises a cylinder part, a thread part and a clamping piece part which are integrally formed; four sleeve support lugs are arranged at one end of the cylindrical part, and each sleeve support lug is rotationally connected with a first bearing bracket; the outer portion of the cylindrical part is sleeved with a sliding sleeve, four sleeve supporting lugs are arranged on the sliding sleeve, each sleeve supporting lug is rotationally connected with a second bearing support, and a rolling bearing is connected between each second bearing support and the corresponding first bearing support. One end of the threaded part is connected with an adjusting T-shaped nut, and one side of the adjusting T-shaped nut is connected with the sliding sleeve through an adjusting spring; the device is simple and convenient in structure, convenient and fast to assemble on a construction site and large in pipe diameter application range, and the endoscope detection efficiency, comprehensiveness and operation convenience of the pipe inner diameter and the center hole are greatly improved.

Description

Technical Field

[0001] The utility model belongs to the field of mechanical design, and in particular relates to a rolling bracket suitable for endoscope detection of the inner wall of multi-caliber pipelines. Background Art

[0002] At present, thermal power generation, as an important part of my country's energy structure, plays the role of "ballast stone" in energy security. The boiler, as one of the three major main equipment in a thermal power plant, is made of a large number of small-diameter pipes that are bent and welded. The small-diameter pipes serve as flow channels for the working fluid, and at the same time complete the exchange of heat energy in them, transforming the liquid medium into saturated steam, which in turn drives the turbine to do work.

[0003] During the service life of boiler heating surface tubes, there is a risk of cracking and leakage due to blockage caused by oxide scale shedding and cracks on the inner wall. Therefore, it is very important to use endoscopic inspection to carry out inspection. The front end of the lens of the currently used endoscopic inspection equipment can be rotated by controlling the operating handle to observe the situation in all directions inside the tube. However, due to the lack of radial support during the inspection process, the endoscope lens line can only move forward against the tube wall, which imposes certain restrictions on the observation angle. When inspecting vertical pipelines, the lack of adhesion causes the lens line to shake greatly inside the tube, seriously affecting the inspection effect. Utility Model Content

[0004] The purpose of the utility model is to solve the problems of lack of radial support at the front end of the lens and shaking of the endoscope lens line in the vertical pipeline in the current detection process, and to provide a rolling bracket for multi-caliber pipeline inner wall endoscope detection that can be suitable for various pipe diameters and changes in pipe diameter at pipe structure bends, thereby ensuring accurate, efficient and comprehensive endoscope inspection of small-diameter pipes.

[0005] To achieve the above purpose, the technical solution adopted by the utility model to solve the above problem is: a rolling bracket suitable for endoscope detection of the inner wall of a multi-caliber pipeline, comprising a threading sleeve, the threading sleeve comprising an integrally formed cylindrical portion, a threaded portion and a clip portion, one end of the cylindrical portion is connected to the threaded portion, one end of the threaded portion is connected to a plurality of clips arranged in a circumference, and the plurality of clips evenly arranged in a circumference together constitute the clip portion;

[0006] The other end of the cylindrical portion is provided with four sleeve lugs, and the four sleeve lugs are evenly arranged on the outer wall of the threading sleeve in a circumferential manner, and each of the sleeve lugs is rotatably connected to a first bearing bracket;

[0007] A sliding sleeve is sleeved outside the cylindrical portion. Four sleeve lugs are provided on the sliding sleeve, and the four sleeve lugs are uniformly arranged circumferentially on the outer wall of the sliding sleeve. The positions of the four sleeve lugs correspond to those of the four sleeve lugs. A second bearing bracket is rotatably connected to each sleeve lug. The positions of the four second bearing brackets correspond to those of the four first bearing brackets. A rolling bearing is connected between each second bearing bracket and the corresponding first bearing bracket.

[0008] One end of the threaded portion is connected with an adjusting T-shaped nut, and one side of the adjusting T-shaped nut is connected with the sliding sleeve through an adjusting spring.

[0009] Preferably, a rubber cushion layer is provided on the inner wall of the wire threading sleeve. The clip is inclined, and the inner diameter of one end of the clip portion is smaller than the inner diameter of the cylindrical portion.

[0010] Preferably, both the first bearing bracket and the second bearing bracket are Y-shaped brackets, and through holes are provided at both ends of the first bearing bracket and the second bearing bracket. One end of the first bearing bracket is rotatably connected with the sleeve lug through the through hole, and the other end of the first bearing bracket is rotatably connected with the rolling bearing through the through hole. One end of the second bearing bracket is rotatably connected with the sleeve lug through the through hole, and the other end of the second bearing bracket is rotatably connected with the rolling bearing through the through hole.

[0011] Preferably, the inner diameter of the sliding sleeve is larger than the outer diameter of the wire threading sleeve, and the distance between the inner wall of the sliding sleeve and the outer wall of the cylindrical portion of the wire threading sleeve is 1 mm.

[0012] Preferably, the adjusting T-shaped nut includes an integrally formed annular baffle and an external hexagonal nut. One side of the annular baffle is connected with an adjusting spring, and the other end of the adjusting spring is connected with the sliding sleeve.

[0013] The beneficial effects of the utility model are as follows: The clip portion of the wire threading sleeve is used to limit the endoscope lens wire, ensuring that there is no relative displacement between the bracket and the lens wire during the detection process; by adjusting the screwing distance of the adjusting T-shaped nut on the threaded portion, the distance between the rolling bearing and the outer wall of the wire threading sleeve is adjusted, so that the rolling bracket actively adapts to the inner diameter of the pipe to be detected; when the rolling bracket is inserted into the pipe, the sliding sleeve exerts a certain extrusion on the adjusting spring, and the elastic force generated by the adjusting spring makes the rolling bearing have good contact with the inner wall of the pipe, so that the lens wire is firmly suspended at the central part of the pipe, and the endoscope inspection of the inside of the pipe can be realized by extending and retracting the lens wire; during the inspection process, if the pipe diameter changes, the passive adaptation of the detectable pipe diameter can be realized by compressing or releasing the adjusting spring.

[0014] Moreover, the structure of the utility model is simple, the on-site assembly is convenient and fast, and the accessories can be quickly replaced according to the on-site use requirements, which can meet the endoscope inspection requirements for the inner walls of pipelines with a large range of diameters and the inner holes of large forgings; a rolling bracket for endoscopic inspection of the inner walls of multi-diameter pipelines involved in the utility model can greatly improve the rate of pipeline endoscopic inspection and the convenience of operation, and fundamentally solve the problems such as difficult wire threading and difficult lens position adjustment caused by the on-site pipeline layout. Brief Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic diagram of the working state of the present utility model;

[0017] Figure 2 It is the front view of the structural effect of the rolling bracket of the present utility model;

[0018] Figure 3 It is the side view of the structural effect of the rolling bracket of the present utility model;

[0019] Figure 4 It is the structural schematic diagram of the wire threading sleeve of the present utility model;

[0020] Figure 5 It is the structural schematic diagram of the sliding sleeve of the present utility model;

[0021] Figure 6 It is the side view of the sliding sleeve of the present utility model. Detailed Embodiments

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model; the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] During the detection process of the currently adopted endoscope detection device, the lens lacks radial support. The endoscope lens wire can only move forward by clinging to the pipe wall, which causes certain limitations to the observation angle. When detecting a vertical pipe, due to the lack of clinging, the lens wire has a large shake in the pipe, seriously affecting the inspection effect. In view of this, the inventor of the present application provides a mobile support suitable for the endoscope detection of the inner walls of multi-diameter pipes, which has the characteristics of simple structure and convenient assembly at the construction site, has a large adaptability range for pipe diameters, and greatly improves the endoscope detection efficiency, comprehensiveness and operation convenience of the pipe inner diameter and the central hole.

[0025] As Figure 1-6 shown, a rolling support suitable for the endoscope detection of the inner walls of multi-diameter pipes includes a wire threading sleeve 1. The wire threading sleeve 1 includes an integrally formed cylindrical portion, a threaded portion 10 and a clip portion 11. One end of the cylindrical portion is connected to the threaded portion 10, and one end of the threaded portion 10 is connected to a plurality of clips arranged in a circle. A plurality of clips arranged evenly in a circle together form the clip portion 11;

[0026] Among them, four sleeve lugs 9 are provided at the other end of the cylindrical portion, and the four sleeve lugs 9 are evenly arranged in a circle on the outer wall of the wire threading sleeve 1. A first bearing bracket 3 is rotatably connected to each sleeve lug 9; a sliding sleeve 5 is sleeved outside the cylindrical portion. Four sleeve lugs 12 are provided on the sliding sleeve 5, and the four sleeve lugs 12 are evenly arranged in a circle on the outer wall of the sliding sleeve 5. The positions of the four sleeve lugs 12 correspond to the positions of the four sleeve lugs 9. A second bearing bracket 4 is rotatably connected to each sleeve lug 12. The positions of the four second bearing brackets 4 correspond to the positions of the four first bearing brackets 3. A rolling bearing 2 is connected between each second bearing bracket 4 and the corresponding first bearing bracket 3.

[0027] Based on the above embodiments, the sleeve lugs 9 are evenly distributed at 90° intervals in the circumferential direction on the side wall of the wire threading sleeve 1, and the sleeve lugs 9 are used to connect the first bearing bracket 3; the sleeve lugs 12 of the sleeve are evenly distributed at 90° intervals in the circumferential direction on the side wall of the sliding sleeve 5, and the sleeve lugs 12 of the sleeve are used to connect the second bearing bracket 4.

[0028] In this embodiment, as Figure 2 shown, one end of the threaded portion 10 is connected with an adjusting T-shaped nut 7, and one side of the adjusting T-shaped nut 7 is connected with the sliding sleeve 5 through an adjusting spring 6.

[0029] Based on the above embodiments, by adjusting the installation position of the adjusting T-shaped nut 7 on the threaded portion 10, the distance between the sliding sleeve 5 and the end of the cylindrical portion is adjusted, that is, the distance between the sleeve lug 12 of the sleeve and the sleeve lug 9 is adjusted through the adjusting T-shaped nut 7 and the adjusting spring 6.

[0030] In this embodiment, as Figure 3-4 shown, a rubber cushion layer 8 is provided on the inner wall of the wire threading sleeve 1, the clip is inclined, and the inner diameter of one end of the clip portion 11 is smaller than the inner diameter of the cylindrical portion.

[0031] Based on the above embodiments, the rubber pad 8 supports the endoscope lens wire in the wire threading sleeve 1, and at the same time, the rubber pad 8 prevents the inner wall of the wire threading sleeve 1 from damaging the endoscope lens wire.

[0032] In this embodiment, both the first bearing bracket 3 and the second bearing bracket 4 are Y-shaped brackets, and through holes are provided at both ends of the first bearing bracket 3 and the second bearing bracket 4; one end of the first bearing bracket 3 is rotatably connected with the sleeve lug 9 through the through hole, and the other end of the first bearing bracket 3 is rotatably connected with the rolling bearing 2 through the through hole; one end of the second bearing bracket 4 is rotatably connected with the sleeve lug 12 of the sleeve through the through hole, and the other end of the second bearing bracket 4 is rotatably connected with the rolling bearing 2 through the through hole.

[0033] Based on the above embodiments, the sliding sleeve 5 installed with the second bearing bracket 4 is sleeved from one side of the clip section of the wire threading sleeve 1, and the corresponding first bearing bracket 3, second bearing bracket 4 and rolling bearing 2 are connected by a pin shaft, wherein the rolling bearing 2 is located between the Y-shaped fork arms of the first bearing bracket 3 and the second bearing bracket 4. At this time, a hinged connection is formed among the rolling bearing 2, the first bearing bracket 3 and the second bearing bracket 4; when the sliding sleeve 5 moves relative to the wire threading sleeve 1, the distance between the rolling bearing 2 and the outer wall of the wire threading sleeve 1 is adjusted by the rotation of the first bearing bracket 3 and the second bearing bracket 4, so that the wire threading sleeve 1 can be placed in pipes with different diameters.

[0034] In this embodiment, the inner diameter of the sliding sleeve 5 is larger than the outer diameter of the wire threading sleeve 1, and the distance between the inner wall of the sliding sleeve 5 and the outer wall of the cylindrical part of the wire threading sleeve 1 is 1 mm.

[0035] Among them, the adjusting T-shaped nut 7 includes an integrally formed annular baffle and an external hexagonal nut. One side of the annular baffle is connected with an adjusting spring 6, and the other end of the adjusting spring 6 is connected with the sliding sleeve 5.

[0036] Based on the above embodiment, the adjusting T-shaped nut 7 is sleeved from one side of the clip segment and screwed onto the threaded segment 10 on the wire threading sleeve 1 through thread fitting; by means of the adjusting spring 6, it is ensured that the distance between the inner wall of the sliding sleeve 5 and the outer wall of the wire threading sleeve 1 is the same, so as to ensure that the distances between the four rolling bearings 2 and the outer wall of the wire threading sleeve 1 are the same.

[0037] The working principle of the present utility model is as follows: The endoscope lens wire is inserted into the wire threading sleeve 1 through one end of the clip part 11 of the wire threading sleeve 1 and extends out of the wire threading sleeve 1 by a certain length from one end of the cylindrical part, which is convenient for using the handle to control the viewing angle; at this time, the clip part 11 has a certain clamping force on the endoscope lens wire to ensure that there is no relative displacement between the bracket and the lens wire during the detection process; by adjusting the screwing distance of the adjusting T-shaped nut 7 on the threaded part 10, the distance between the sliding sleeve 5 and one end of the cylindrical part of the wire threading sleeve 1 is adjusted, and then the distance between the rolling bearing 2 and the outer wall of the wire threading sleeve 1 is adjusted, so that the rolling bracket actively adapts to the inner diameter of the pipe to be detected; at the same time, when the rolling bracket is inserted into the pipe, the sliding sleeve 5 exerts a certain extrusion on the adjusting spring 6, and the elastic force generated by the adjusting spring 6 makes the rolling bearing 2 have good contact with the inner wall of the pipe through the action of the first bearing bracket 3 and the second bearing bracket 4. At this time, the lens wire is firmly suspended at the central part of the pipe, and the endoscope inspection of the inside of the pipe can be realized by extending and retracting the lens wire; during the inspection process, if the pipe diameter changes, the passive adaptation of the detectable pipe diameter can be realized by compressing or releasing the adjusting spring 6.

[0038] The content not described in detail in this specification belongs to the prior art well known to those skilled in the art.

[0039] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A rolling bracket applicable to the endoscopic inspection of the inner wall of multi-diameter pipelines, characterized in that, It includes a wire threading sleeve, and the wire threading sleeve includes an integrally formed cylindrical part, a threaded part and a clip part. One end of the cylindrical part is connected to the threaded part, and one end of the threaded part is connected with a plurality of clips arranged in a circle. A plurality of clips arranged evenly in a circle together form the clip part; Four sleeve lugs are provided at the other end of the cylindrical part, and the four sleeve lugs are arranged evenly in a circle on the outer wall of the wire threading sleeve. A first bearing bracket is rotatably connected to each sleeve lug; A sliding sleeve is sleeved outside the cylindrical part. Four sleeve lugs are provided on the sliding sleeve, and the four sleeve lugs are arranged evenly in a circle on the outer wall of the sliding sleeve. The four sleeve lugs correspond to the four sleeve lugs in position. A second bearing bracket is rotatably connected to each sleeve lug. The four second bearing brackets correspond to the four first bearing brackets in position. A rolling bearing is connected between each second bearing bracket and the corresponding first bearing bracket; One end of the threaded part is connected with an adjusting T-shaped nut, and one side of the adjusting T-shaped nut is connected with the sliding sleeve through an adjusting spring.

2. The rolling support for endoscopic inspection of the inner wall of multi-diameter pipelines according to claim 1, wherein A rubber cushion layer is arranged on the inner wall of the wire threading sleeve. The clips are inclined in design, and the inner diameter of one end of the clip part is smaller than the inner diameter of the cylindrical part.

3. The rolling bracket applicable to the inner wall endoscope inspection of multi-diameter pipelines according to claim 2, characterized in that, Both the first bearing bracket and the second bearing bracket are Y-shaped brackets, and through holes are provided at both ends of the first bearing bracket and the second bearing bracket; One end of the first bearing bracket is rotatably connected to the sleeve lug through the through hole, and the other end of the first bearing bracket is rotatably connected to the rolling bearing through the through hole; One end of the second bearing bracket is rotatably connected to the sleeve lug through the through hole, and the other end of the second bearing bracket is rotatably connected to the rolling bearing through the through hole.

4. The rolling support for endoscope inspection of the inner wall of multi-diameter pipelines according to claim 3, characterized in that, The inner diameter of the sliding sleeve is larger than the outer diameter of the wire threading sleeve, and the distance between the inner wall of the sliding sleeve and the outer wall of the cylindrical part of the wire threading sleeve is 1 mm.

5. The rolling bracket for endoscope inspection of the inner wall of multi-diameter pipelines according to claim 4, characterized in that, The adjusting T-shaped nut includes an integrally formed annular baffle and an external hexagonal nut. One side of the annular baffle is connected with an adjusting spring, and the other end of the adjusting spring is connected with the sliding sleeve.

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