CN111947553B

CN111947553B - Flatness detection device for metro traction converter cabinet

Info

Publication number: CN111947553B
Application number: CN202010692660.6A
Authority: CN
Inventors: 陆洪飞; 陆春水; 王庆丰
Original assignee: Suzhou Huaya Intelligent Technology Co ltd
Current assignee: Suzhou Huaya Intelligent Technology Co ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2022-05-27
Anticipated expiration: 2040-07-17
Also published as: CN111947553A

Abstract

The application relates to a flatness detecting device for subway traction converter cabinet, including the brace table that is used for supporting the rack, the upper surface of brace table is equipped with a plurality of bearing subassemblies, and every bearing subassembly corresponds single stabilizer blade setting respectively, and the upper surface of a plurality of bearing subassemblies is in same height. This application has the effect that effectively detects out the plane degree of traction converter rack stabilizer blade fast.

Description

Flatness detection device for metro traction converter cabinet

Technical Field

The application relates to the field of flatness detection equipment, in particular to a flatness detection device for a metro traction converter cabinet.

Background

With the continuous development of urban rail transit technologies, such as subways, high-speed trains and the like. Various precision devices are continuously put into various positions of the vehicle body for use, so that the precision requirement on the equipment framework is higher and higher.

The traction converter is one of key parts of a train, is generally installed at the bottom of a train body, and has the main function of converting 1500V direct current from a contact network into 0-1150V three-phase alternating current, and realizes the starting, braking and speed regulation control of an alternating current traction motor through voltage regulation and frequency regulation control, so that the running control of the train is realized.

The traction converter is generally arranged in a cubic cabinet as shown in fig. 1, the cabinet comprises a cabinet body, a plurality of support legs are horizontally welded on two sides of the bottom of the cabinet body in the length direction, mounting holes are vertically formed in the support legs in a penetrating mode, and the cabinet body is arranged at the bottom of a vehicle body through the support legs.

In view of the above-mentioned related art, due to the precision of the traction converter, the cabinet is required to have high installation precision, and generally all the legs of the cabinet are required to be on the same horizontal plane. Inspection processes such as flatness are typically performed after the cabinet is assembled.

The flatness detection in the prior art is realized by methods such as a flat crystal interference method (measuring small planes), a liquid plane method and the like, but because the mass and the volume of the cabinet are large and the flatness of the whole support legs needs to be measured, the flatness of the support legs of the cabinet is difficult to accurately and conveniently measure by utilizing the prior art. The inventor further thinks that a device capable of conveniently and accurately detecting the flatness of the traction converter cabinet is lacked.

Disclosure of Invention

In order to improve the convenience when drawing the converter rack plane degree and detecting, this application provides a plane degree detection device for subway draws converter rack.

The application provides a flatness detection device for subway traction converter rack adopts following technical scheme:

the utility model provides a plane degree detection device for subway traction converter rack, is including the brace table that is used for supporting the rack, the upper surface of brace table is equipped with a plurality of bearing components, every the bearing component corresponds single stabilizer blade setting respectively, and is a plurality of the upper surface of bearing component is in same height.

By adopting the technical scheme, when the detection device is used for detecting the surface of the cabinet, the cabinet is integrally hoisted and placed on the support table, so that each support leg is respectively positioned on the upper surface of the corresponding bearing component, and then the gap between each support leg and the upper surface of the corresponding bearing component is measured or visually observed by the measuring instrument and recorded; and taking a maximum value, comparing the obtained maximum value data with a standard error value, wherein the flatness of the cabinet support leg is unqualified if the maximum value exceeds the standard error value, and the flatness of the cabinet support leg is qualified if the maximum value is within the standard error value.

Preferably, the bearing assembly comprises a bearing block arranged on the upper surface of the support platform and an adjusting block horizontally arranged on the upper surface of the bearing block, and the adjusting block is connected with the bearing block through a bolt.

By adopting the technical scheme, when the supporting platform is placed on different ground when the field is changed or the ground is influenced by friction or foreign matters after long-term use, the flatness of the ground cannot be ensured, so that certain error is generated in the flatness of the upper surface of the supporting platform, and the flatness of the bearing assembly originally positioned on the same plane is inaccurate, so that the detection process of a subsequent cabinet is inaccurate; this settlement has provided a bearing component's structure, this bearing component self height can be adjusted, specifically be the fixing bolt that unscrews, the shim is filled in between adjusting block bottom surface and bearing block surface, then screw fixing bolt, the regulation of adjusting block height can be accomplished, and then make the upper surface of each adjusting block be located the coplanar through the adjustment, the reliance of supporting bench to ground plane degree has been reduced, need not troublesome going the adjustment or adjusting quality and the supporting bench that the volume is all great, then improve the precision and the convenience of detection.

Preferably, the adjusting block is further provided with a pitch measuring block, the upper surface of the pitch measuring block is vertically provided with calibration holes in a through manner, and the pitch between adjacent calibration holes is equal to the pitch between the mounting holes on adjacent support legs.

Through adopting above-mentioned technical scheme, when the rack is placed on pitch-row measuring block, through observing the contact ratio between alignment hole and the mounting hole, can judge on the one hand whether the trompil position of stabilizer blade mounting hole is accurate, and on the other hand can judge the accuracy that the rack was placed, conveniently adjusts the position of rack for the more steady accurate placing of rack provides better earlier stage condition for follow-up plane degree measurement simultaneously on a supporting bench.

Preferably, a plurality of gradienters are arranged on the supporting platform and distributed on the upper surface of the supporting platform in a polygonal shape.

By adopting the technical scheme, whether the supporting platform is in a horizontal state or not can be directly judged through the level gauge, and the inclination direction of the supporting platform can be roughly judged, so that the errors caused by manual measurement are reduced, and the detection accuracy is improved; on the other hand, the use convenience is improved.

Preferably, the two sides of the length direction of the upper surface of the support table are provided with T-shaped grooves, the lower surface of each bearing block is provided with a T-shaped block in sliding fit with the T-shaped grooves, the length direction of the T-shaped grooves is parallel to the length direction of the support table, and each bearing block is provided with a positioning assembly for positioning the bearing block.

Through adopting above-mentioned technical scheme, the bearing piece can slide and set up at a supporting bench upper surface, and the rack model and the size that detect as needs are different, and then when the welding position that leads to the stabilizer blade changes, the position of bearing piece can be adjusted, and then make each stabilizer blade setting of matching that the bearing piece can be better, has improved this detection device's suitability, need not change new detection device, and it is more convenient to detect, and locating component then is used for the position of fixed bearing piece.

Preferably, the positioning assembly comprises a positioning groove, a positioning threaded hole and a positioning bolt, the positioning groove is formed in one side of the upper surface of the support table in the length direction of the T-shaped groove, the positioning threaded hole is vertically communicated with the support block, the positioning bolt is connected in the positioning threaded hole in a threaded mode, and the bottom end of the positioning bolt is abutted to the bottom surface of the positioning groove.

Through adopting above-mentioned technical scheme, provide a locating component's structure, when needs fix a position the bearing piece, the positioning bolt is screwed into downwards for positioning bolt's bottom supports tightly the constant head tank can. The positioning assembly is convenient to operate and convenient to detach and replace.

Preferably, each bearing block is vertically provided with a scale rod, the outer side surface of each scale rod is provided with scales, and the zero scale mark of each scale rod is positioned on the same horizontal plane.

Through adopting above-mentioned technical scheme, the reading through the scale rod can directly read out the distance between every stabilizer blade and the bearing piece upper surface, saves the process of the distance between every stabilizer blade of manual measurement and the bearing piece, and the manual work can produce certain error to the accuracy of detection has been improved.

Preferably, the circumference side of scale rod is equipped with the external screw thread, be equipped with auxiliary measurement subassembly on the scale rod, auxiliary measurement subassembly includes that threaded connection is at the sleeve pipe on the scale rod, fixed cover establish the measurement bearing on the sleeve pipe lateral wall and the measuring stick of level setting on the measurement bearing lateral wall.

Through adopting the above technical scheme, sleeve pipe threaded connection is on the scale rod, rotatory sleeve pipe makes the sleeve pipe can go up and down along the vertical direction of scale rod, and then drive and measure the bearing and the vertical lift of measuring stick, measure the bearing and make the measuring stick can rotate along the vertical axis of scale rod, after having placed the rack, rotatory measuring stick makes the tip and the stabilizer blade of measuring stick contradict, the height of reading out the stabilizer blade that can be convenient, thereby reduce the error that artifical multiple measurement calculation probably produced, the precision and the convenience of detection have been improved.

Preferably, limiting plates are vertically arranged on the upper surfaces of the two ends of the supporting table in the length direction, and the distance between the two opposite surfaces of the limiting plates is equal to the length of the cabinet.

Through adopting above-mentioned technical scheme, when placing the rack on a supporting bench, spacing space is constituteed to a plurality of limiting plates, and then makes the vertical accuracy of placing on a supporting bench of rack for the supporting subassembly can be matchd a plurality of stabilizer blades to the limiting plate is placed when a supporting bench, reduces the adjustment process, has improved the stability and the accuracy that the rack was placed, then improves the accuracy that follow-up plane degree detected.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the supporting table and the supporting components, the upper surfaces of the supporting components are located on the same plane, when the flatness of the cabinet supporting feet is measured, the cabinet is only required to be placed on the supporting table, so that each supporting foot is located on the corresponding supporting component respectively, and because the upper surfaces of the supporting components are located on the same horizontal plane, if the supporting feet are not located on the same plane, the situation that the gaps between the supporting feet and the upper surfaces of the supporting components are different can be certainly caused, and whether the flatness is qualified or not can be conveniently obtained through measuring the height of each gap and comparing the height with a standard value;

2. the height of each bearing component is adjustable, so that when the supporting tables are positioned under different conditions or precision errors occur after long-term use, the height of each bearing component can be adjusted, the upper surfaces of the plurality of bearing components are ensured to be positioned at the same height, the supporting tables are prevented from being adjusted, the use process is facilitated, and the adaptability is higher;

3. the bearing component is connected on the supporting platform in a sliding manner, so that the bearing component can be well suitable for detecting the planeness of the cabinets with different sizes, and the convenience and the adaptability of detection are improved;

4. through setting up scale bar and auxiliary measurement subassembly for during final reading, directly can directly obtain the numerical value through auxiliary measurement subassembly, reduce the error that artifical measurement probably produced and the time energy that artifical measurement consumes, improved the convenience and the accuracy that detect.

Drawings

FIG. 1 is a background art diagram;

FIG. 2 is a schematic view of the overall structure of the detecting unit;

fig. 3 is a partially enlarged view of a portion a in fig. 2;

fig. 4 is a partially enlarged view of a portion B of fig. 3;

FIG. 5 is a schematic diagram of the overall structure of the cabinet during inspection;

fig. 6 is a partially enlarged view of a portion C in fig. 5.

Description of reference numerals: 1. a support table; 2. a holding assembly; 21. a bearing block; 22. an adjusting block; 3. a pitch measurement block; 31. calibrating the hole; 4. a level gauge; 5. a T-shaped slot; 6. a T-shaped block; 7. a positioning assembly; 71. positioning a groove; 72. positioning the bolt; 8. a graduated rod; 81. a scale groove; 9. an auxiliary measurement assembly; 91. a sleeve; 92. measuring the bearing; 93. a measuring rod; 10. a limiting plate; 11. a stabilizing block; 12. a reinforcing plate; 50. reinforcing rib plates; 51. a weight reduction groove; 60. a cabinet body; 61. a leg; 611. and (7) mounting holes.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

Referring to fig. 1, the conventional traction converter cabinet according to the present invention includes a cabinet body 60, and a plurality of support legs 61 are horizontally welded to two sides of the bottom end of the cabinet body 60 in the length direction. The support legs 61 are respectively provided with 5 on two sides of the length direction of the cabinet. Each support leg 61 is vertically provided with a mounting hole 611 in a penetrating manner.

Referring to fig. 2, a flatness detecting apparatus for a metro traction converter cabinet is disclosed in an embodiment of the present application. The flatness detection device comprises a support table 1, wherein the support table 1 is rectangular, reinforcing rib plates 50 are arranged on two vertical side surfaces in the length direction of a support strip, and a weight reduction groove 51 is arranged in the center of the support table 1.

Referring to fig. 2, four levels 4 are arranged on the supporting platform 1, the four levels 4 are respectively distributed at four corners of the upper surface of the supporting platform 1, and whether the supporting platform 1 is in a horizontal state or not can be conveniently observed through the levels 4, so that the subsequent flatness detection can be conveniently carried out. The equal vertical fixed limiting plate 10 that is equipped with of brace table 1 length direction both ends upper surface, limiting plate 10 are located brace table 1 length direction both ends upper surface and are equipped with two respectively, and the distance between the relative one side of limiting plate 10 equals the length of rack body 60 for rack body 60 is placing the in-process at brace table 1 more stable accurate.

Referring to fig. 2 and 3, five support members 2 are provided on the upper surface of the support table 1 at both sides in the longitudinal direction thereof corresponding to the legs 61, and the upper surfaces of all the support members 2 are located on the same plane. The supporting component 2 comprises a supporting block 21 arranged on the upper surface of the supporting table 1 and an adjusting block 22 horizontally arranged on the upper surface of the supporting block 21, and the adjusting block 22 is connected with the supporting block 21 through a bolt.

Referring to fig. 3, the susceptor block 21 is slidably coupled to the upper surface of the support table 1 along the longitudinal direction of the support table 1. Specifically, the both sides of the upper surface length direction of the supporting table 1 are provided with T-shaped grooves 5, each side of the length direction of the supporting table 1 is provided with two T-shaped grooves 5 which are parallel to each other, the lower surface of each supporting block 21 is provided with a T-shaped block 6 which is in sliding fit with the T-shaped grooves 5, and the length directions of the T-shaped grooves 5 and the T-shaped blocks 6 are all parallel to the length direction of the supporting table 1, so that the supporting block 21 is slid along the length direction of the supporting table 1 to be set.

Referring to fig. 3, each supporting block 21 is provided with a positioning assembly 7 for positioning the supporting block 21, the positioning assembly 7 includes a positioning groove 71 formed in the upper surface of the supporting table 1 and located on one side of the length direction of the T-shaped groove 5 away from the center of the supporting table 1, a positioning threaded hole vertically penetrating the supporting block 21 and a positioning bolt 72 connected in the positioning threaded hole in a threaded manner, the length direction of the positioning groove 71 is parallel to the length direction of the T-shaped groove 5, and the bottom end of the positioning bolt 72 abuts against the bottom surface of the positioning groove 71.

Referring to fig. 3, the adjusting block 22 is further bolted with a pitch measuring block 3, calibration holes 31 are formed through the upper surface of the pitch measuring block 3, and the pitch between adjacent calibration holes 31 is equal to the pitch between the mounting holes 611 on two adjacent legs 61. Through observing the contact ratio between alignment hole and the mounting hole, can judge on the one hand whether the trompil position of stabilizer blade mounting hole is accurate, on the other hand can judge the accuracy that the rack was placed.

Referring to fig. 3, each bearing block 21 is vertically provided with a scale rod 8, the outer side surface of each scale rod 8 is provided with scales, and the zero scale line of each scale rod 8 is located on the same horizontal plane. Referring to fig. 4, a scale groove 81 is vertically formed in the circumferential sidewall of the scale bar 8, and the scale is disposed in the scale groove 81.

Referring to fig. 3, an external thread is arranged on the outer side surface of the scale rod 8, and an auxiliary measuring assembly 9 is arranged on the scale rod 8; the auxiliary measuring component 9 comprises a sleeve 91 in threaded connection with the scale rod 8, a measuring bearing 92 fixedly sleeved on the outer side wall of the sleeve 91, and a measuring rod 93 horizontally and fixedly connected to the outer side wall of the measuring bearing 92.

Referring to fig. 4 and 5, a stabilizing block 11 is integrally connected to the lower surface of one end of the adjusting block 22 away from the scale rod 8, the vertical side surface of the stabilizing block 11 abuts against the vertical side surface of the bearing block 21, and a reinforcing plate 12 is arranged on the vertical side surface of the stabilizing block 11 away from the scale rod 8. The above arrangement improves the stability of the connection between the adjusting block 22 and the bearing block 21 and is more stable during the testing process.

The implementation principle of the flatness detection device for the metro traction converter cabinet in the embodiment of the application is as follows: during the use, slide earlier bearing block 21 along the length direction of brace table 1, the position of having adjusted a plurality of bearing components 2 for bearing components 2 match the stabilizer blade 61 setting on the rack respectively.

Then utilize spirit level 4 to judge the levelness of propping up supporting bench 1, if the error appears, then guarantee through the height of adjustment supporting component 2 that the 2 upper surfaces of supporting component are located the coplanar, specifically be the height of measuring every supporting component 2 upper surfaces apart from propping up supporting bench 1, add the shim between supporting piece 21 in the supporting component 2 that needs the adjustment and the supporting bench 1 upper surface according to the condition after measuring well to change the height of certain supporting component 2, until all supporting components 2 are in the coplanar.

Referring to figure 5, the support table 1 is then placed on the support assembly 2, ensuring that the mounting holes 611 are aligned with the alignment holes 31.

At last, the sleeve 91 is rotated to drive the measuring bearing 92 to move in the vertical direction, and then the measuring rod 93 is driven to move in the vertical direction, and then the measuring rod 93 is rotated around the vertical axis of the scale rod 8, so that the lower surface of the measuring rod 93 is abutted to the upper surface of the supporting leg 61, and the reading of the other end of the measuring rod 93 is read. The remaining nine data are recorded separately in the same manner.

And taking the maximum value, comparing the maximum value with the standard value, wherein the flatness of the support leg 61 on the cabinet is unqualified when the maximum value exceeds the standard error value, and the flatness of the support leg 61 on the cabinet is qualified when the maximum value is within the standard error value.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a flatness detection device for subway traction converter rack which characterized in that: the supporting device comprises a supporting table (1) for supporting a cabinet, wherein a plurality of supporting components (2) are arranged on the upper surface of the supporting table (1), each supporting component (2) is arranged corresponding to a support leg (61) on the cabinet, and the upper surfaces of the plurality of supporting components (2) are at the same height; the bearing component (2) comprises a bearing block (21) arranged on the upper surface of the support platform (1) and an adjusting block (22) horizontally arranged on the upper surface of the bearing block (21), and the adjusting block (22) is connected with the bearing block (21) through a bolt; the supporting table (1) is provided with a plurality of gradienters (4), and the gradienters (4) are distributed on the upper surface of the supporting table (1) in a polygonal manner; each supporting block (21) is vertically provided with a scale rod (8), the outer side surface of each scale rod (8) is provided with scales, the zero scale mark of each scale rod (8) is positioned on the same horizontal plane, the circumference of each scale rod (8) is provided with external threads, and each scale rod (8) is provided with an auxiliary measuring assembly (9); the auxiliary measuring component (9) measures the upper surfaces of the support legs (61), takes the maximum value of the measured values, compares the maximum value with a standard value, if the maximum value exceeds a standard error value, the flatness of the support legs (61) on the cabinet is unqualified, and if the maximum value is within the standard error value, the flatness of the support legs (61) on the cabinet is qualified.

2. The flatness detecting apparatus for a metro traction converter cabinet according to claim 1, wherein: the adjusting block (22) is further provided with a pitch measuring block (3), the upper surface of the pitch measuring block (3) is vertically provided with calibration holes (31) in a penetrating mode, and the pitch between the calibration holes (31) is adjacent to the pitch between the mounting holes (611) on the adjacent supporting legs (61).

3. The flatness detecting apparatus for a metro traction converter cabinet according to claim 1, wherein: the support table is characterized in that T-shaped grooves (5) are formed in two sides of the upper surface of the support table (1) in the length direction, T-shaped blocks in sliding fit with the T-shaped grooves (5) are arranged on the lower surface of the support block (21), the length direction of the T-shaped grooves (5) is parallel to the length direction of the support table (1), and each support block (21) is provided with a positioning assembly (7) for positioning the support block (21).

4. The flatness detecting apparatus for a metro traction converter cabinet according to claim 3, wherein: the positioning assembly (7) comprises a positioning groove (71) formed in one side of the upper surface of the support table (1) in the length direction of the T-shaped groove (5), a positioning threaded hole vertically formed in the support block (21) in a penetrating mode and a positioning bolt (72) connected into the positioning threaded hole in a threaded mode, and the bottom end of the positioning bolt (72) is abutted to the bottom surface of the positioning groove (71).

5. The flatness detecting apparatus for a metro traction converter cabinet according to claim 1, wherein: the auxiliary measuring component (9) comprises a sleeve (91) in threaded connection with the scale rod (8), a measuring bearing (92) fixedly arranged on the outer side wall of the sleeve (91) and a measuring rod (93) horizontally arranged on the outer side wall of the measuring bearing (92).

6. The flatness detecting apparatus for a metro traction converter cabinet according to claim 1, wherein: the supporting table is characterized in that limiting plates (10) are vertically arranged on the upper surfaces of two ends of the supporting table (1) in the length direction, and the distance between the two opposite surfaces of the limiting plates (10) is equal to the length of the cabinet.