CN220217985U - Polishing tool for pipe fitting for mechanical seal - Google Patents

Abstract

The utility model relates to a polishing tool for a pipe fitting for mechanical sealing, which comprises a mounting frame, a limiting assembly, a polishing assembly, a first positioning assembly and a second positioning assembly, wherein the polishing assembly is supported on a base of the mounting frame, the limiting assembly is connected to a top cross beam of the mounting frame through the first positioning assembly, and the second positioning assembly is arranged on a support column in a parallel mode with the top cross beam; the first positioning component can drive the limiting component to adjust the multidirectional working position along the axial direction of the top beam and the axial direction of the limiting component, so that the to-be-polished pipe limited by the limiting component is in contact with the surface of the polishing component in a state of keeping the same level with the polishing component, and when the limiting component moves to the working height along the axial direction under the control of the first positioning component, the lower axial end of the limiting component is detachably connected with the second positioning component.

Description

Polishing tool for pipe fitting for mechanical seal

Technical Field

The utility model relates to the technical field of machining equipment for mechanical sealing parts, in particular to a polishing tool for a pipe fitting for mechanical sealing.

Background

The mechanical sealing element is used as a mechanical basic element with complex structure and high precision, and is widely applied to various pumps, reaction synthesis kettles, turbine compressors, submersible motors and other devices needing to construct sealed transmission chambers. The sealing performance and service life of the mechanical seal member depend on many factors, such as the type selection, the precision of the machine, the correct installation and use, etc., the mechanical seal member can be produced through a plurality of processing procedures, wherein polishing processing of the mechanical seal member is included, the surface roughness of the seal member is reduced through mechanical action, so that a bright and flat surface processing method is obtained, and meanwhile, polishing can be adopted to improve the surface of the material, and the wear resistance and corrosion resistance are enhanced.

The most commonly used and most numerous spare and accessory parts in the mechanical seal structure are cylindrical pipe fittings, and the machining operation similar to other precise spare and accessory parts is needed to be adopted in machining, wherein when the polishing is carried out, the surface polishing is inconvenient to carry out by using the existing plane polishing or curved surface polishing equipment due to the limitation of the cylindrical outer contour of the pipe fittings. In addition, because different sections of the pipe fitting have different diameter sizes, the existing polishing equipment cannot effectively clamp the pipe fitting, and especially the contact surface of the end part propping against the limiting structure and the annular end face of the pipe fitting is small, the deviation easily occurs in the polishing process to cause rotary shaking, so that the surface polishing degree has regional difference, and the polishing effect is poor.

Furthermore, there are differences in one aspect due to understanding to those skilled in the art; on the other hand, as the inventors studied numerous documents and patents while the present utility model was made, the text is not limited to details and contents of all that are listed, but it is by no means the present utility model does not have these prior art features, the present utility model has all the prior art features, and the applicant remains in the background art to which the rights of the related prior art are added.

Disclosure of Invention

The utility model aims to provide a polishing tool for a mechanical sealing pipe fitting, which can perform telescopic adjustment of a fixing structure according to the diameter sizes of different sections of the pipe fitting so as to stably limit the pipe fitting to be polished, and aims to solve the problems that the conventional polishing equipment cannot effectively fix a cylindrical pipe fitting, particularly cannot effectively fix the pipe fitting with section difference in the pipe diameter, and the pipe fitting is easy to deviate in the polishing process so as to cause uneven polishing effect and poor polishing quality.

The technical scheme adopted by the utility model is as follows: the polishing tool for the pipe fitting for the mechanical seal comprises a mounting frame, a limiting assembly, a polishing assembly, a first positioning assembly and a second positioning assembly, wherein the polishing assembly is supported on a base of the mounting frame, the top cross beam of the mounting frame is connected with the limiting assembly through the first positioning assembly, and the second positioning assembly is arranged on a supporting column in a parallel mode with the top cross beam; the first positioning component can drive the limiting component to adjust the multidirectional working position along the axial direction of the top beam and the axial direction of the limiting component, so that the to-be-polished pipe limited by the limiting component is in contact with the surface of the polishing component in a state of keeping the same level with the polishing component, and when the limiting component moves to the working height along the axial direction under the control of the first positioning component, the lower axial end of the limiting component is detachably connected with the second positioning component.

According to a preferred embodiment, the limiting assembly comprises a mounting square tube, a telescopic limiting mechanism, a transmission pulley and an annular linkage baffle, wherein a plurality of telescopic limiting mechanisms are arranged on four sides of the mounting square tube in an array arrangement mode, so that a plurality of telescopic limiting mechanisms can be arranged at intervals in the axial direction of the mounting square tube while being arranged at intervals in the circumferential direction on different tube body sections of the mounting square tube; the telescopic limiting mechanism is arranged in a mode of being partially inserted into the pipe cavity of the installation square pipe.

According to a preferred embodiment, the telescopic limiting mechanism comprises a limiting shell, a limiting elastic piece, a directional limiting plate, a supporting rod and an arc surface limiting plate, wherein the limiting shell is mounted on a pipe body of the installation square pipe in an embedded mode, the limiting elastic piece and the directional limiting plate are arranged in the limiting shell, and two ends of the limiting elastic piece are respectively connected with the inner bottom wall of a part of the shell, which is arranged in a pipe cavity of the installation square pipe, of the limiting shell, and the surface of the directional limiting plate.

According to a preferred embodiment, the surface of the directional limiting plate, which is far away from the limiting elastic piece, is supported with the supporting rod penetrating through the shell wall of the limiting shell, and one end of the supporting rod, which is far away from the directional limiting plate, is connected with a cambered surface limiting plate.

According to a preferred embodiment, the surface of the directional limiting plate, which is in contact with the limiting elastic piece, is further provided with a linkage rope, the linkage rope penetrates through the wall of a part of the shell, which is placed in the cavity of the installation square tube, of the limiting shell, the linkage rope is turned through the transmission pulley in the cavity of the installation square tube, and the linkage rope bypasses the rope body of the transmission pulley and is connected with the annular linkage baffle arranged on the port surface of the installation square tube.

According to a preferred embodiment, the installation side pipe is provided with one end of the annular linkage baffle plate and is inserted with the positioning shaft, and one end of the positioning shaft away from the installation side pipe is provided with a deflection bearing cap which can be in positioning connection with the second positioning component.

According to a preferred embodiment, one end of the installation square tube, which is far away from the annular linkage baffle, is rotatably connected with the axial lower end of the electric hydraulic telescopic member of the first positioning assembly, and a rotating motor which can be in transmission connection with the installation square tube is detachably installed on the side surface of the cylinder of the axial lower section of the electric hydraulic telescopic member.

According to a preferred embodiment, the first positioning assembly further comprises a first transverse translation mechanism arranged on the top cross beam, a rotary threaded rod is inserted into a translation limiting groove of the first transverse translation mechanism, a translation block is sleeved on the rotary threaded rod, and the bottom surface of the translation block is connected with the axial upper end surface of the electric hydraulic telescopic piece.

According to a preferred embodiment, the polishing assembly comprises a second transverse translation mechanism, a lifting column, a mounting platform and a penetrating rod, wherein the second transverse translation mechanism, the lifting column, the mounting platform and the penetrating rod are mounted on the base, the lifting column is supported on a sliding block of the second transverse translation mechanism, the axial upper end of the lifting column is connected with the mounting platform, and the penetrating rod capable of mounting a plurality of stacked polishing columns in a sleeving manner is supported on the mounting platform.

According to a preferred embodiment, the second positioning assembly comprises a transverse hydraulic lifting rod and a plug-in block, wherein two ends of the transverse hydraulic lifting rod are respectively connected with the support column and the plug-in block, and the plug-in block is detachably clamped with the deflection bearing cap.

The beneficial effects of the utility model are as follows:

the utility model provides a spacing subassembly that sets up can adjust limit structure's flexible size according to the actual internal diameter size of pipe fitting that cup joints to make spacing subassembly can carry out spacing support effectively to the pipe fitting of different size internal diameters, especially the flexible stop gear that axial interval was laid can support spacing length's suitability according to the actual size of different sections of pipe fitting and adjust, make different flexible stop gear can support spacing to the intraductal chamber of different internal diameter sizes simultaneously, thereby guaranteed the spacing stability of pipe fitting, especially the spaced apart support of subregion, make the different regions that have the pipe fitting that need not the pipe diameter all receive approximately even support spacing effort, and then the pipe fitting that the atress is approximately balanced can remain certain stable position state all the time, thereby when spacing subassembly drives its rotation and rubs with polishing subassembly, rolling friction surface can keep relatively stable, the pipe fitting can not take place the skew or rock, thereby the homogeneity and the quality of polishing have been promoted. According to the polishing device, the first positioning component and the second positioning component which can be used for limiting the limiting component are arranged at the upper end and the lower end of the limiting component in the axial direction, so that the stability of the relative position between the limiting component and the polishing component is effectively guaranteed in the polishing friction process, and adverse phenomena such as contact shaking are avoided.

This application is through carrying out the linkage setting with a plurality of flexible stop gear for operating personnel is when needs carry out the cup jointing of pipe fitting, can accomplish the flexible of cambered surface limiting plate on radial through the hoop linkage baffle that the pulling linkage rope is connected, has promoted the convenience of operating efficiency and operation, makes operating personnel can accomplish the dismouting of pipe fitting fast and conveniently.

Drawings

FIG. 1 is a schematic structural view of a polishing tool for a pipe fitting for mechanical seal according to the present utility model;

fig. 2 is a schematic structural view of a limiting assembly of a polishing tool for a pipe fitting for mechanical sealing according to the present utility model;

FIG. 3 is a schematic view of the structure of an annular linkage baffle region of a preferred mechanical seal tube according to the present utility model;

FIG. 4 is a schematic view of a preferred structure of a plug block and a plug piece of a mechanical seal pipe according to the present utility model after plugging;

fig. 5 is a schematic structural view of a part a of a polishing tool for a pipe fitting for mechanical sealing according to the present utility model;

fig. 6 is a schematic structural view of a polishing tool for a mechanical seal pipe according to the present utility model, in which polishing columns are inserted in an overlapping manner on a penetration rod.

List of reference numerals

1: a mounting frame; 2: a limit component; 3: a polishing assembly; 4: a first positioning assembly; 5: a second positioning assembly; 6: a rotating electric machine; 7: polishing the column; 11: a base; 12: a top cross beam; 13: a support column; 21: installing a square tube; 22: a telescopic limit mechanism; 23: a transmission pulley; 24: an annular linkage baffle; 25: positioning a shaft; 26: a yaw bearing cap; 27: an extension connection plate; 31: a second lateral translation mechanism; 32: lifting columns; 33: a mounting platform; 34: penetrating the inserting rod; 41: a first lateral translation mechanism; 42: an electro-hydraulic telescoping member; 51: a transverse hydraulic telescopic rod; 52: a plug block; 221: a limit housing; 222: a limit elastic piece; 223: a directional limiting plate; 224: a support rod; 225: cambered surface limiting plates; 226: a linkage rope; 261: a plug-in piece; 411: a translation limiting groove; 412: rotating the threaded rod; 413: and translating the block.

Detailed Description

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the present utility model will be briefly described below with reference to the accompanying drawings and the description of the embodiments or the prior art, and it is obvious that the following description of the structure of the drawings is only some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

The technical solution provided by the present utility model will be described in detail by way of examples with reference to the accompanying drawings. It should be noted that the description of these examples is for aiding in understanding the present utility model, but is not intended to limit the present utility model. In some instances, some embodiments are not described or described in detail as such, as may be known or conventional in the art.

Furthermore, features described herein, or steps in all methods or processes disclosed, may be combined in any suitable manner in one or more embodiments in addition to mutually exclusive features and/or steps. It will be readily understood by those skilled in the art that the steps or order of operation of the methods associated with the embodiments provided herein may also be varied. Any order in the figures and examples is for illustrative purposes only and does not imply that a certain order is required unless explicitly stated that a certain order is required.

The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling) where appropriate (where no paradox is constructed).

The following detailed description refers to the accompanying drawings.

Example 1

The application provides a polishing frock of pipe fitting for mechanical seal, it includes mounting frame 1, spacing subassembly 2, polishing subassembly 3, first positioning subassembly 4, second positioning subassembly 5, rotating electrical machines 6 and polishing post 7.

According to a specific embodiment, the polishing assembly 3, the first positioning assembly 4 and the second positioning assembly 5 are respectively mounted on the bottom, the top and the side walls of the mounting frame 1, so that the first positioning assembly 4 and the second positioning assembly 5 can be respectively connected with the upper axial end and the lower axial end of the limiting assembly 2. The limiting component 2 is connected with the second positioning component 5 after the first positioning component 4 drives the first positioning component 4 to axially lift to a working height, so that the transverse position of the limiting component 2 can be changed under the common driving of the first positioning component 4 and the second positioning component 5, a pipe to be polished which is limited and sleeved by the limiting component 2 can be contacted with the polishing component 3, the limiting component 2 can stably maintain the relative working position of the pipe to be polished which is limited and clamped by the limiting component to be contacted with the polishing component 3 under the common limiting action of the first positioning component 4 and the second positioning component 5, and the surface of the pipe to be polished which is limited and clamped by the limiting component 2 can always maintain gapless contact in the relative rotation friction process with the polishing component 3, so that the surface of the pipe to be polished can be uniformly polished.

Preferably, the mounting frame 1 includes a base 11, a top beam 12 and support posts 13. Further preferably, the polishing assembly 3 is supported on the base 11 of the mounting frame 1. The top cross beam 12 of the mounting frame 1 is connected with a limiting assembly 2 through a first positioning assembly 4. The second positioning assembly 5 is arranged on the support column 13 in parallel with the top cross beam 12.

As shown in fig. 2, the limiting assembly 2 comprises a mounting square tube 21, a telescopic limiting mechanism 22, a transmission pulley 23, an annular linkage baffle 24, a positioning shaft 25, a deflection bearing cap 26 and an extension connecting plate 2. Preferably, the four sides of the installation square tube 21 are provided with a plurality of telescopic limit mechanisms 22 in an array arrangement manner, so that a plurality of telescopic limit mechanisms 22 can be arranged at intervals in the axial direction of the installation square tube 21 while being arranged at intervals in the circumferential direction on different tube body sections of the installation square tube 21. Further preferably, the four telescopic limit mechanisms 22 are arranged in a manner of being respectively arranged at four side points of the same cross section of the installation square tube 21 so as to form circumferential interval arrangement, and the plurality of telescopic limit mechanisms 22 are arranged at intervals on the same side of the installation square tube 21, so that the telescopic limit mechanisms 22 are arranged at intervals in the axial direction and are arranged at intervals in the circumferential direction so as to form circumferential array arrangement on the side wall of the installation square tube 21. Specifically, the expansion and contraction limiting mechanism 22 is provided so as to be partially inserted into the lumen of the installation square tube 21. Preferably, an annular linkage baffle 24 which is linked with the telescopic limit mechanism 22 is arranged at the axial lower end of the installation square tube 21. Preferably, a positioning shaft 25 is inserted into one end of the installation square tube 21 where the annular linkage baffle 24 is arranged. Preferably, the end of the positioning shaft 25 remote from the mounting square tube 21 is provided with a deflector bearing cap 26 which is capable of positioning connection with the second positioning assembly 5. Preferably, the yaw bearing cap 26 is provided with a positioning hinge joint which is connected in a rotating manner, so that the positioning hinge joint can rotate when the pipe fitting to be polished is sleeved, and can reset again when the pipe fitting to be polished needs to be connected with the plug block 52, so that the plug piece 261 can be limited by a bolt after being plugged with the plug block 52, so that the second adjusting piece 5 can limit the position of the yaw bearing cap 26, so that positioning acting force is applied to the limiting assembly 2, and the limiting assembly 2 can be limited to keep a contact state with the polishing assembly 3. It is further preferred that the end of the deflector bearing cap 26 facing the mounting square tube 21 is provided with an extension connection plate 27. Specifically, the extension connection plate 27 is penetrated with an extension auxiliary rope capable of controlling the movement of the linkage baffle 24, so that when the pipe fitting to be polished is sleeved on the section where the positioning shaft 25 is located, the extension and retraction of the cambered surface limiting plate 225 is controlled by pulling the extension auxiliary rope, so that the pipe fitting to be polished is translated to the section position where the square pipe 21 is installed. The spacing subassembly 2 that this application set up can be according to the actual internal diameter size of the pipe fitting that cup joints adjusts limit structure's flexible size to make spacing subassembly 2 can carry out effective spacing support to the pipe fitting of different size internal diameters, especially the flexible stop gear 22 that axial interval was laid can support the suitability adjustment of spacing length according to the actual size of different sections of pipe fitting, make different flexible stop gear 22 can support spacing to the intraductal chamber of different internal diameter sizes simultaneously, thereby guaranteed the spacing stability of pipe fitting, especially the interval support of subregion, make the different regions that have the pipe fitting that need not the pipe diameter all receive approximately even support spacing effort, and then the pipe fitting that the atress is approximately balanced can remain certain stable position state all the time, thereby when spacing subassembly 2 drives its rotation and rubs with polishing subassembly 3, the roll friction surface can remain relatively stable, the pipe fitting can not take place the skew or rock, thereby the homogeneity and the quality of polishing have been promoted. The utility model provides a through be provided with respectively at spacing subassembly 2 axial upper end and lower extreme and carry out spacing first positioning subassembly 4 and second positioning subassembly 5 to it to guarantee effectively the stability of the relative position between spacing subassembly 2 and the polishing subassembly 3 in polishing friction in-process, in order to avoid appearing the adverse phenomena such as contact and rock.

Preferably, the end of the mounting square tube 21 remote from the annular linkage bar 24 is rotatably connected to the axially lower end of the electro-hydraulic telescopic member 42 of the first positioning assembly 4. Further preferably, an opening through which the link rope 226 passes and which can resist the annular link damper 24 is opened in the end face of the installation square tube 21, so that the annular link damper 24 pulled by the link rope 226 is limited to abut against the installation square tube 212, and the annular link damper 24 is prevented from entering the installation square tube 21.

Preferably, the telescopic limit mechanism 22 comprises a limit housing 221, a limit elastic piece 222, a directional limit plate 223, a support rod 224, an arc surface limit plate 225 and a linkage rope 226. Preferably, the limit housing 221 is mounted on the pipe body of the mounting square pipe 21 in a mosaic manner, and a limit elastic member 222 and an orientation limit plate 223 are provided inside the limit housing 221. It is further preferable that both ends of the limit elastic member 222 are respectively connected with an inner bottom wall of a portion of the housing where the limit housing 221 is placed in the lumen of the installation square tube 21 and a surface of the orientation limit plate 223, thereby defining a position of the orientation limit plate 223 in the limit housing 221. Preferably, a supporting rod 224 penetrating through the shell wall of the limit housing 221 is supported on the surface of the orientation limiting plate 223 far away from the limit elastic member 222, and an arc surface limiting plate 225 is connected to one end of the supporting rod 224 far away from the orientation limiting plate 223. Preferably, the surface of the orientation limiting plate 223 contacting the limiting elastic member 222 is further provided with a link rope 226. It is further preferable that the link rope 226 is placed through the limit housing 221 in the wall of the part of the housing in the lumen of the installation square tube 21. Specifically, the linkage rope 226 turns to through the transmission pulley 23 in the lumen of the installation square tube 21, and the rope body that the linkage rope 226 walks around the transmission pulley 23 is connected with the annular linkage baffle 24 that sets up on the port face of the installation square tube 21, thereby pulls the directional limiting plate 223 to move along the direction of compressing the spacing elastic member through the mode of controlling the translation of annular linkage baffle 24 in the axial direction of the installation square tube 21, and then reduces the diameter of the supporting surface that a plurality of cambered surface limiting plates 225 that circumference interval was laid to limit assembly 2, so that the pipe fitting that waits to polish can be overlapped and established on the spacing assembly 2. This application is through carrying out the linkage setting with a plurality of flexible stop gear 22 for operating personnel is when needs carry out the cup jointing of pipe fitting, can accomplish the flexible of cambered surface limiting plate 225 on radial through the hoop linkage baffle 24 that pulling linkage rope 226 is connected, has promoted the convenience of operating efficiency and operation, makes operating personnel can accomplish the dismouting of pipe fitting fast and conveniently. Especially for the thin-wall pipe fitting, the length of the linkage rope 226 can be adjusted to change the lifting supporting force provided by the cambered surface limiting plate 225, so that the appearance of the thin-wall pipe fitting can be effectively maintained while the position of the thin-wall pipe fitting is limited.

Preferably, the linkage ropes 226 of the telescopic limiting mechanisms 22 which are circumferentially and alternately arranged in the same section of the installation square tube 21 are turned through the transmission pulleys 23 with the same supporting height, so that the turned linkage ropes can be connected with the same annular linkage baffle 226, and accordingly, the single annular linkage baffle 226 can control the cambered surface limiting plates 225 of the telescopic limiting mechanisms 22 on the same section to radially stretch and retract at the same distance, and the cambered outer contours of the cambered surface limiting plates 225 are always on the same circumference line under the pulling of the linkage ropes 226. As shown in fig. 3, the linkage baffle 24 is arranged in a manner that a plurality of plates are stacked, so that the supporting heights of the transmission pulleys 23 on different sections are different, and the linkage ropes 226 of the telescopic limiting mechanisms 22 on different sections can be limited on different annular surfaces under the steering adjustment of different transmission pulleys 23, so that the linkage baffle 24 is connected with different linkage baffles 24.

Preferably, the polishing assembly 3 comprises a second lateral translation mechanism 31 mounted on the base 11, a lifting column 32, a mounting platform 33 and an interpenetration rod 34. Preferably, a lifting column 32 is supported on the slide of the second lateral translation mechanism 31. Preferably, the axial upper end of the lifting column 32 is connected to a mounting platform 33, and the mounting platform 33 supports thereon a penetration rod 34 capable of mounting a plurality of stacked polishing columns 7 in a socket-joint manner. As shown in fig. 6, the upper and lower end surfaces of the polishing columns 7 are provided with a limit column and a limit hole, so that a plurality of polishing columns 7 can be stacked in a limit plugging manner. It is further preferred that the multi-stage polishing column 7 may have outer diameters of different sizes so as to effectively contact the pipe members of different outer diameter sizes of different sections to secure the polishing effect. Preferably, the mounting platform 33 is provided with a limit hole matching with a limit post of the lower surface of the polishing post 7, thereby defining the relative position between the polishing post and the mounting platform 33. Preferably, the axial upper end of the penetration rod 34 is provided with a bolt structure for defining the positions of the plurality of stacked polishing columns 7 on the penetration rod 34. Preferably, the polishing roller of the polishing assembly 3 may be provided as a fixed polishing arc panel body so that the polishing arc panel body can have a larger contact area with the surface of the pipe to be polished, thereby accelerating the polishing efficiency of the pipe. Further preferably, the polishing roller of the polishing assembly 3 may be set in a rotating state such that it can rotate in opposition to the pipe to be polished, thereby accelerating the polishing process.

Preferably, when the limiting assembly 2 moves to the working height along the axial direction thereof under the control of the first positioning assembly 4, the lower axial end of the limiting assembly 2 is detachably connected with the second positioning assembly 5, so that the working position of the limiting assembly 2 is changed through the first positioning assembly 4 with the upper end being transversely limited and the upper end being vertically limited and the second positioning assembly 5 with the lower end being transversely limited. Specifically, the first positioning component 4 can drive the limiting component 2 to adjust the multidirectional working position along the axial direction of the top beam 12 and the axial direction of the limiting component 2, so that the pipe fitting to be polished limited by the limiting component 2 is in contact with the surface of the polishing component 3 in a state of keeping the pipe fitting to be polished flush with the polishing component 3,

preferably, the first positioning assembly 4 comprises a first lateral translation mechanism 41 and an electro-hydraulic telescopic 42. Preferably, the first lateral translation mechanism 41 is provided on the top cross member 12. Further preferably, the rotation threaded rod 412 is inserted into the translation limiting slot 411 of the first transverse translation mechanism 41, and the rotation threaded rod 412 is sleeved with the translation block 413, so that the translation block 413 can be limited by the translation limiting slot 411 to perform directional translation when the rotation threaded rod 412 is driven by the translation motor to rotate, and the electro-hydraulic telescopic component 42 and the limiting assembly 2 are driven to perform translation along the axial direction of the top beam 12. Preferably, the bottom surface of the translation block 413 is connected to the axially upper end surface of the electro-hydraulic telescoping member 42. As shown in fig. 5, the rotating motor 6 which is in driving connection with the installation square tube 21 is detachably installed on the side of the lower axial section cylinder of the electro-hydraulic expansion member 42, so that the installation square tube 21 can rotate along with the transmission shaft of the rotating motor 6 while moving up and down along with the electro-hydraulic expansion member 42, so that the pipe to be polished can rotate in a state of being in contact with the polishing assembly 3, and the pipe to be polished with relative rotation is finished in polishing.

As shown in fig. 1 and 4, the second positioning assembly 5 includes a lateral hydraulic telescopic rod 51 and a plug block 52. Preferably, both ends of the transverse hydraulic telescopic rod 51 are respectively connected with the support column 13 and the plug-in block 52. Specifically, the insert block 52 is removably snapped into engagement with the yaw bearing cap 26.

The utility model is not limited to the above-described alternative embodiments, and any person who may derive other various forms of products in the light of the present utility model, however, any changes in shape or structure thereof, all falling within the technical solutions defined in the scope of the claims of the present utility model, fall within the scope of protection of the present utility model. It should be understood by those skilled in the art that the present description and drawings are illustrative and not limiting to the claims. The scope of the utility model is defined by the claims and their equivalents. Throughout this document, the word "preferably" is used in a generic sense to mean only one alternative, and not to be construed as necessarily required, so that the applicant reserves the right to forego or delete the relevant preferred feature at any time.

Claims (10)

1. The polishing tool for the pipe fitting for the mechanical seal is characterized by comprising a mounting frame (1), a limiting assembly (2), a polishing assembly (3), a first positioning assembly (4) and a second positioning assembly (5),

the polishing assembly (3) is supported on a base (11) of the mounting frame (1), a top cross beam (12) of the mounting frame (1) is connected with a limiting assembly (2) through a first positioning assembly (4), and the second positioning assembly (5) is arranged on a supporting column (13) in a mode of being parallel to the top cross beam (12);

the first positioning component (4) can drive the limiting component (2) to carry out multidirectional working position adjustment along the axial direction of the top cross beam (12) and the axial direction of the limiting component (2) so that a pipe fitting to be polished limited by the limiting component (2) is contacted with the surface of the polishing component (3) under the state of keeping the same level with the polishing component (3),

when the limiting assembly (2) moves to the working height along the axial direction under the control of the first positioning assembly (4), the lower axial end of the limiting assembly (2) is detachably connected with the second positioning assembly (5).

2. The polishing tool for a pipe fitting for mechanical seal according to claim 1, wherein the limiting assembly (2) comprises a mounting square pipe (21), a telescopic limiting mechanism (22), a transmission pulley (23) and an annular linkage baffle (24), wherein,

the four side surfaces of the installation square tube (21) are provided with a plurality of telescopic limiting mechanisms (22) in an array arrangement mode, so that a plurality of telescopic limiting mechanisms (22) can be arranged at intervals in the axial direction of the installation square tube (21) while being arranged at intervals in the circumferential direction on different tube body sections of the installation square tube (21);

the telescopic limiting mechanism (22) is arranged in a mode of being partially inserted into the pipe cavity of the installation square pipe (21).

3. The polishing tool for a pipe fitting for mechanical seal according to claim 2, wherein the telescopic limiting mechanism (22) comprises a limiting shell (221), a limiting elastic piece (222), a directional limiting plate (223), a supporting rod (224) and an arc limiting plate (225),

the limiting shell (221) is inlaid and installed on the pipe body of the installation square pipe (21), the limiting elastic piece (222) and the directional limiting plate (223) are arranged in the limiting shell (221), and two ends of the limiting elastic piece (222) are respectively connected with the inner bottom wall of the part of the shell, which is placed in the pipe cavity of the installation square pipe (21), of the limiting shell (221) and the surface of the directional limiting plate (223).

4. A polishing tool for a pipe fitting for mechanical seal according to claim 3, wherein the surface of the orientation limiting plate (223) away from the limiting elastic member (222) is supported with the supporting rod (224) penetrating the shell wall of the limiting shell (221), and one end of the supporting rod (224) away from the orientation limiting plate (223) is connected with a cambered surface limiting plate (225).

5. The polishing tool for a pipe fitting for mechanical seal according to claim 4, wherein the surface of the orientation limiting plate (223) contacting with the limiting elastic member (222) is further provided with a linking rope (226), the linking rope (226) penetrates through the shell wall of a part of the shell where the limiting shell (221) is placed in the lumen of the installation square pipe (21),

the linkage rope (226) is turned through the transmission pulley (23) in the pipe cavity of the installation square pipe (21), and the linkage rope (226) bypasses a rope body of the transmission pulley (23) and is connected with the annular linkage baffle (24) arranged on the port surface of the installation square pipe (21).

6. The polishing tool for a pipe fitting for mechanical seal according to claim 5, wherein a positioning shaft (25) is inserted into one end of the installation square pipe (21) where the annular linkage baffle (24) is provided, and one end of the positioning shaft (25) away from the installation square pipe (21) is provided with a deflection bearing cap (26) which can be in positioning connection with the second positioning assembly (5).

7. The polishing tool for a pipe fitting for mechanical seal according to claim 6, wherein an end of the installation square tube (21) away from the annular linkage baffle plate (24) is rotatably connected with an axial lower end of an electro-hydraulic expansion member (42) of the first positioning assembly (4),

a rotary motor (6) which can be in transmission connection with the installation square tube (21) is detachably arranged on the side surface of the cylinder at the lower section of the axial direction of the electro-hydraulic telescopic piece (42).

8. The polishing tool for a pipe fitting for mechanical seal according to claim 7, wherein the first positioning assembly (4) further comprises a first transverse translation mechanism (41) arranged on the top beam (12), a rotary threaded rod (412) is inserted into a translation limiting groove (411) of the first transverse translation mechanism (41), a translation block (413) is sleeved on the rotary threaded rod (412),

the bottom surface of the translation block (413) is connected with the axial upper end surface of the electro-hydraulic telescopic piece (42).

9. The polishing tool for a pipe fitting for mechanical seal according to claim 8, wherein the polishing assembly (3) comprises a second transverse translation mechanism (31), a lifting column (32), a mounting platform (33) and an insertion rod (34) mounted on the base (11),

the sliding block of the second transverse translation mechanism (31) is supported with the lifting column (32), the upper axial end of the lifting column (32) is connected with the mounting platform (33), and the mounting platform (33) is supported with the penetrating rod (34) capable of mounting a plurality of stacked polishing columns (7) in a sleeving manner.

10. The polishing tool for a pipe fitting for mechanical seal according to claim 9, wherein the second positioning assembly (5) comprises a transverse hydraulic telescopic rod (51) and a plug block (52),

two ends of the transverse hydraulic telescopic rod (51) are respectively connected with the support column (13) and the plug-in block (52),

the plug-in block (52) is detachably clamped with the deflection bearing cap (26).