Novel probe rod of polishing machine in pipeline

Abstract

The utility model relates to a novel pipeline inside polisher probe rod which comprises at least two probe rod sections which are sequentially connected, each probe rod section comprises a core shaft and a protection pipe, the protection pipe is coaxially arranged outside the core shaft in a circle mode, the two ends of the core shaft are rotatably connected with the protection pipe through bearings, and the core shafts of the at least two probe rod sections are coaxial. The protection pipes of the adjacent probe rod sections are fixedly connected through a first connecting structure, and the mandrels of the adjacent probe rod sections are connected through a second connecting structure so as to limit relative rotation. The feeler lever is formed by connecting the multiple feeler lever sections, the bearings in each feeler lever section are located at the two ends of the core shaft, the feeler lever sections corresponding to the faulted bearings can be detached for overhaul and replacement when the bearings break down, the bearings are easy and convenient to maintain and replace, the whole feeler lever sections cannot be scrapped due to bearing faults, and the service life of the feeler lever sections is prolonged. And the total length of the probe rod can meet the processing requirement of a pipe fitting by increasing or decreasing the number of the probe rod sections according to the length of the pipe fitting to be processed.

Description

Technical Field

[0001] The utility model relates to the field of pipeline polishing technology, in particular to a novel probe rod of a pipeline internal polishing machine. Background Art

[0002] During the pipeline processing, the inner wall of the pipeline needs to be polished. Since the pipeline is long, a transmission mandrel is generally used to connect the grinding head and the motor. The grinding head is extended into the pipeline through the transmission mandrel and the motor power is transmitted to the grinding head to polish the inner wall of the pipeline.

[0003] For longer pipes, a longer transmission mandrel is required. An overly long transmission mandrel will have excessive deflection when rotating, which will generate loud noise and vibration, and easily lead to mandrel breakage. The previous improvement plan was to install a bearing between the mandrel and the outer protection tube of the probe rod to support the mandrel. However, since the bearing is in the middle of the probe rod, it is difficult to maintain the bearing. Once the bearing is damaged, the entire transmission mandrel needs to be replaced. Utility Model Content

[0004] Based on the above description, the utility model provides a new type of probe rod for a pipeline polishing machine to solve the problem in the related technology that a bearing is added between the core shaft and the outer protective tube of the probe rod to support the core shaft. Since the bearing is in the middle of the probe rod, the bearing maintenance is difficult and once the bearing is damaged, the entire transmission core shaft needs to be replaced.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] The present application provides a novel probe rod for a pipeline internal polishing machine, and the technical solution adopted is as follows:

[0007] A novel probe rod for a pipeline polishing machine comprises at least two probe rod segments connected in sequence, wherein the probe rod segments comprise a core shaft and a protective tube, wherein a coaxial ring of the protective tube is arranged outside the core shaft, and both ends of the core shaft are rotatably connected to the protective tube through bearings, the core shafts of at least two of the probe rod segments are coaxial, the protective tubes of adjacent probe rod segments are fixedly connected by a first connecting structure, and the core shafts of adjacent probe rod segments are connected by a second connecting structure to limit relative rotation.

[0008] Preferably, the first connection structure comprises two connection flanges, the two connection flanges are respectively arranged at the ends of two adjacent protection tubes, the connection flange coaxial ring is arranged outside the core shaft, and the two connection flanges are connected by bolts.

[0009] Preferably, the bearings at both ends of the core shaft are respectively connected to the connecting flanges at both ends of the protection tube.

[0010] Preferably, the outer diameter of the protective tube is consistent with the outer diameter of the connecting flange, and among two adjacent protective tubes, the side wall near the end of any one of the protective tubes is provided with a mounting hole for the bolts connecting the two connecting flanges to pass through, and the mounting holes are provided in plurality and are spaced apart along the circumference of the protective tube, and the plurality of mounting holes correspond one-to-one to the plurality of bolt hole positions on the connecting flange.

[0011] Preferably, the second connection structure includes a limit block and a limit groove, the limit groove is opened on the end face of one of the core shafts and extends radially, the limit block is connected to the other end of the core shaft, and the limit block is embedded in the limit groove to limit the relative rotation of adjacent core shafts.

[0012] Preferably, the core shaft includes a main shaft and connecting shafts disposed at both ends of the main shaft and coaxial with the main shaft, the diameter of the connecting shaft is smaller than the diameter of the main shaft, and the bearing ring is disposed outside the connecting shaft and connected to the protective tube.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0014] 1. The present application sets the probe rod to include multiple probe rod segments, the core shaft in the probe rod segment is used to transmit motor power, the multiple core shafts are connected in sequence to form a complete power transmission shaft, and the multiple protection tubes are connected in sequence to form a complete protection tube to protect the internal core shaft, and the two ends of the core shaft in each probe rod segment are connected by bearings and protection tubes, so that the core shaft can rotate relative to the protection tube, and the bearings support the core shaft at the same time to avoid vibration caused by excessive deflection when the core shaft rotates. Since the probe rod is formed by connecting multiple probe rod segments, and the bearings in each probe rod segment are located at both ends of the core shaft, when the bearing fails, the probe rod segment corresponding to the failed bearing can be removed for inspection and replacement, the maintenance and replacement of the bearing is simple and convenient, and the bearing failure will not cause the entire probe rod segment to be scrapped, and the number of probe rod segments can be increased or decreased according to the length of the pipe to be processed so that the total length of the probe rod meets the processing requirements of the pipe;

[0015] 2. The two adjacent probe rod segments are fixedly connected by two connecting flanges to realize the protection tube, and the transmission connection of the core shaft is realized by the cooperation of the limit block and the limit groove. The structure is simple, the connection construction is convenient, and the assembly of the probe rod can be completed quickly. The outer diameter of the protection tube is set to be consistent with the outer diameter of the connecting flange, and a mounting hole is opened on the protection tube. When the two connecting flanges are connected by bolts, the mounting hole is used for the bolts to pass through to complete the connection work, so that the outer circle size of the entire protection tube is consistent to facilitate the axial feeding of the probe rod on the probe rod bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a novel pipeline polishing machine probe rod provided by an embodiment of the utility model;

[0017] Figure 2 A partially enlarged schematic diagram of a new type of pipeline polishing machine probe rod provided in an embodiment of the utility model;

[0018] Figure 3 A schematic diagram of the end structure of a probe rod segment in a new type of pipeline polishing machine probe rod provided by an embodiment of the utility model;

[0019] Figure 4 A schematic diagram of the connection structure of the core shafts in two adjacent probe rod segments in a novel pipeline internal polishing machine probe rod provided by an embodiment of the utility model.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1. Probe rod segment; 11. Mandrel; 111. Main shaft; 112. Connecting shaft; 113. Limit block; 114. Limit groove; 12. Protective tube; 121. Mounting hole; 13. Connecting flange; 2. Polishing head; 3. First segment; 4. Second segment; 5. Third segment; 6. Fourth segment; 7. Bearing. DETAILED DESCRIPTION

[0022] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0024] It will be appreciated that spatial relationship terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0025] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. The "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0026] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0027] Reference Figure 1-4 As shown, an embodiment of the present application provides a novel probe rod of a pipeline polishing machine, which includes at least two probe rod segments 1 connected in sequence, the probe rod segment 1 includes a core shaft 11 and a protective tube 12, the protective tube 12 is coaxially arranged outside the core shaft 11, and both ends of the core shaft 11 are rotatably connected to the protective tube 12 through bearings 7, the core shafts 11 of at least two probe rod segments 1 are coaxial, the protective tubes 12 of adjacent probe rod segments 1 are fixedly connected by a first connecting structure, and the core shafts 11 of adjacent probe rod segments 1 are connected by a second connecting structure to limit relative rotation.

[0028] With this arrangement, the core shaft 11 in the probe rod segment 1 is used to transmit motor power, and multiple core shafts 11 are connected in sequence to form a complete power transmission shaft, and multiple protective tubes 12 are connected in sequence to form a complete protective tube 12 to protect the internal core shaft 11, and both ends of the core shaft 11 in each probe rod segment 1 are connected by bearings 7 and protective tubes 12, so that the core shaft 11 can rotate relative to the protective tube 12, and at the same time, the bearings 7 support the core shaft 11 to avoid vibration caused by excessive deflection when the core shaft 11 rotates. Since the probe rod is formed by connecting multiple probe rod segments 1, and the bearings 7 in each probe rod segment 1 are located at both ends of the core shaft 11, when the bearing 7 fails, the probe rod segment 1 corresponding to the failed bearing 7 can be removed for inspection and replacement, and the maintenance and replacement of the bearing 7 is simple and convenient. The failure of the bearing 7 will not cause the entire probe rod segment 1 to be scrapped, and the number of probe rod segments 1 can be increased or decreased according to the length of the pipe to be processed so that the total length of the probe rod meets the processing requirements of the pipe.

[0029] Reference Figure 2-3As shown, specifically, the first connection structure includes two connecting flanges 13, the two connecting flanges 13 are respectively arranged at the ends of two adjacent protective tubes 12, the connecting flanges 13 are coaxially arranged outside the core shaft 11, and the two connecting flanges 13 are connected by bolts; then each protective tube 12 is provided with connecting flanges 13 at both ends, the connecting flanges 13 and the protective tube 12 are coaxially fixedly connected, and a plurality of bolt holes are provided on each corresponding connecting flange 13.

[0030] Reference Figure 2-3 As shown, since the probe rod needs to be axially fed on the probe rod bracket during the pipe polishing operation, in order to avoid the connection flange 13 affecting the axial feeding of the probe rod, the outer diameter of the connection flange 13 is set to be consistent with the outer diameter of the protection tube 12, so that the outer diameter of the entire probe rod is consistent. At the same time, in order to facilitate the connection of the connection flange 13 between two adjacent protection tubes 12 by bolts, in the two adjacent protection tubes 12, the side wall of any protection tube 12 near the end is provided with a mounting hole 121 for the bolts connecting the two connection flanges 13 to pass through, and the mounting holes 121 are provided in plurality and are spaced apart along the circumference of the protection tube 12, and the plurality of mounting holes 121 correspond one-to-one to the plurality of bolt holes on the connection flange 13. Specifically, the mounting hole 121 extends axially along the protective tube 12 and is passed through at one end close to the end of the protective tube 12. When connecting the two connecting flanges 13, the bolts are passed through the mounting hole 121 and assembled in the bolt holes of the connecting flange 13 on the protective tube 12, and the bolt holes on the other connecting flange 13 are set as screw holes, and the bolts are assembled in the screw holes to fix the two connecting flanges 13, thereby fixing the two protective tubes 12 in connection.

[0031] Reference Figure 3-4 As shown, further, the mandrel 11 includes a main shaft 111 and a connecting shaft 112 disposed at both ends of the main shaft 111 and coaxial with the main shaft 111, the connecting shaft 112 has a diameter smaller than the main shaft 111, and the bearing 7 is disposed outside the connecting shaft 112 and connected to the protective tube 12; specifically, the bearings 7 at both ends of the mandrel 11 are respectively connected to the connecting flanges 13 at both ends of the protective tube 12, the connecting flange 13 is coaxially disposed outside the bearing 7 and fixed to the outer ring of the bearing 7, and the inner ring of the bearing 7 is fixed to the mandrel 11. This arrangement facilitates the installation of the bearing 7 between the mandrel 11 and the protective tube 12, making the installation and removal of the bearing 7 easier.

[0032] Reference Figure 4As shown, further, the second connecting structure includes a limit block 113 and a limit groove 114, the limit groove 114 is opened on the end face of an inner shaft 11 and extends radially, the limit block 113 is connected to the end of the other inner shaft 11, and the limit block 113 is embedded in the limit groove 114 to limit the relative rotation of the adjacent inner shafts 11; specifically, the limit block 113 and the limit groove 114 are both arranged on the connecting shaft 112 of the inner shaft 11, when the adjacent probe rod segments 1 are connected, the inner shaft 11 is rotated until the limit block 113 and the limit groove 114 correspond to the position and the limit block 113 is embedded in the limit groove 114, and then the two connecting flanges 13 are connected by bolts.

[0033] Reference Figure 1 As shown, in the present embodiment, four probe rod segments 1 are provided for illustration, namely the first segment 3, the second segment 4, the third segment 5 and the fourth segment 6, the mandrel 11 of the first segment 3 is connected to the polishing head 2 at one end away from the second segment 4, and a limiting groove 114 is provided at the other end, limiting blocks 113 are provided at both ends of the mandrel 11 of the second segment 4, and mounting holes 121 are provided at both ends of the protective tube 12 of the second segment 4, limiting grooves 114 are provided at both ends of the mandrel 11 of the third segment 5, a limiting block 113 is provided at one end of the mandrel 11 of the fourth segment 6 to cooperate with the mandrel 11 of the third segment 5, and the other end is connected to the motor, and a mounting hole 121 is provided at one end of the protective tube 12 of the fourth segment 6 close to the third segment 5. In other embodiments, the probe rod segments 1 at both ends of the probe rod can be respectively set to be the same as the first segment 3 and the second segment 4, and in other probe rod segments 1, limit blocks 113 and limit grooves 114 are respectively set at both ends of the core shaft 11, and a mounting hole 121 is set at one end of the protective tube 12 close to the limit block 113 and no mounting hole 121 is set at the other end. In this way, except for the probe rod segments 1 connected to the motor and the polishing head 2 at both ends, the structures of the middle probe rod segments 1 are the same, which is convenient for mass production and convenient to assemble into a probe rod when used.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A new type of probe rod for pipeline internal polishing machine, characterized by: The invention comprises at least two probe rod segments (1) connected in sequence, wherein the probe rod segment (1) comprises a core shaft (11) and a protective tube (12), wherein a coaxial ring of the protective tube (12) is arranged outside the core shaft (11), and both ends of the core shaft (11) are rotatably connected to the protective tube (12) via bearings (7), the core shafts (11) of at least two of the probe rod segments (1) are coaxial, the protective tubes (12) of adjacent probe rod segments (1) are fixedly connected via a first connecting structure, and the core shafts (11) of adjacent probe rod segments (1) are connected via a second connecting structure to limit relative rotation.

2. The novel pipeline internal polishing machine probe rod according to claim 1 is characterized in that: The first connection structure comprises two connection flanges (13), the two connection flanges (13) are respectively arranged at the ends of two adjacent protection tubes (12), the connection flanges (13) are coaxially arranged outside the core shaft (11), and the two connection flanges (13) are connected by bolts.

3. The new type of pipeline internal polishing machine probe rod according to claim 2 is characterized in that: The bearings (7) at both ends of the core shaft (11) are respectively connected to the connecting flanges (13) at both ends of the protection tube (12).

4. The novel pipeline internal polishing machine probe rod according to claim 2 is characterized in that: The outer diameter of the protection tube (12) is consistent with the outer diameter of the connecting flange (13), and in two adjacent protection tubes (12), a side wall near the end of any one of the protection tubes (12) is provided with a mounting hole (121) for the bolts connecting the two connecting flanges (13) to pass through, and the mounting holes (121) are provided in plurality and are distributed at intervals along the circumference of the protection tube (12), and the plurality of mounting holes (121) correspond one-to-one to the plurality of bolt hole positions on the connecting flange (13).

5. The novel probe rod for the internal polishing machine of a pipeline according to claim 1 is characterized in that: The second connection structure comprises a limit block (113) and a limit groove (114); the limit groove (114) is provided on the end face of one of the core shafts (11) and extends radially; the limit block (113) is connected to the end of another core shaft (11); the limit block (113) is embedded in the limit groove (114) to limit the relative rotation of adjacent core shafts (11).

6. The novel pipeline internal polishing machine probe rod according to claim 1 is characterized in that: The core shaft (11) comprises a main shaft (111) and a connecting shaft (112) disposed at both ends of the main shaft (111) and coaxial with the main shaft (111); the diameter of the connecting shaft (112) is smaller than the diameter of the main shaft (111); the bearing (7) ring is disposed outside the connecting shaft (112) and connected to the protective tube (12).

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