CN204694289U - A kind of railway vehicle wheel is to bearing press mounting tracer - Google Patents
A kind of railway vehicle wheel is to bearing press mounting tracer Download PDFInfo
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- CN204694289U CN204694289U CN201520324404.6U CN201520324404U CN204694289U CN 204694289 U CN204694289 U CN 204694289U CN 201520324404 U CN201520324404 U CN 201520324404U CN 204694289 U CN204694289 U CN 204694289U
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Abstract
The utility model discloses a kind of railway vehicle wheel to bearing press mounting tracer, comprise power circuit (1), microcontroller circuit (2), button inputting circuits (3), sound light alarming circuit (4), display circuit (5), mini-printer circuit (6), pressure sensor circuit (7), displacement sensor circuit (8), MICRO SD card circuit (9); In the process that wheel set bearing press-fits, by button setting operation personnel job number, wheel check mark, bearing number; And pass through microcontroller, Real-time Collection wheel set bearing press-fit displacement data and press-fit pressure data, be saved in MICRO SD card, and print the displacement and pressure curve of bearing press mounting by mini-printer, there is the advantage of the displacement and pressure curve of record and printing bearing press mounting automatically.
Description
Technical field
The utility model relates to the electronic technology field of a kind of railway vehicle wheel to bearing press mounting tracer.
Background technology
Take turns being the critical component that rail truck runs, it is right that bearing and wheel adopt interference fit and cold compaction process to be assembled into take turns; The quality that wheel set bearing press-fits quality directly affects traffic safety, wheel-pair bearing assembling press is carried out to the measurement monitoring of pressure assembling force curve, detect the important evidence that wheel set bearing press-fits quality, in railway standard TB/T1718-2003 " railway wheel is to package technique condition ", specified in more detail " is taken turns assembling press mounting force curve and explanation ", be illustrated respectively for dissimilar pressure assembling force curve, and regulation to be carried out printing and file pressure assembling force curve, operating personnel's job number, wheel check mark, bearing number.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of railway vehicle wheel to bearing press mounting tracer, carry out wheel set bearing pressure assembling force curve, operating personnel's job number, wheel check mark, bearing number record and print, and data are stored in MICRO SD card.
The technical solution of the utility model is: a kind of railway vehicle wheel is to bearing press mounting tracer, comprise power circuit, microcontroller circuit, button inputting circuits, sound light alarming circuit, display circuit, mini-printer circuit, pressure sensor circuit, displacement sensor circuit, MICRO SD card circuit; In the process that wheel set bearing press-fits, pass through microcontroller, press-fiting displacement data and press-fiting pressure data of Real-time Collection wheel set bearing, is saved in MICRO SD card, and prints displacement and pressure curve, operating personnel's job number, wheel check mark, the bearing number of bearing press mounting by mini-printer.
Described power circuit, is made up of the first power module, second source module, the 3rd power module, the first electric capacity, the second electric capacity, the 3rd electric capacity, the first inductance, the first diode; Alternating current 220V power supply connects input power pin 1 pin and 2 pin of the first power module, and out-put supply pin 3 pin of the first power module exports the first power supply V1, and out-put supply lower margin 4 pin exports publicly, the first electric capacity in parallel between 3 pin and 4 pin; Power supply input pin 1 pin of second source module connects the first power supply V1, input power lower margin 3 pin connects publicly, export control pin 5 pin to connect publicly, output pin 2 pin connects the first diode cathode, first diode anode connects publicly, connect the first inductance between output pin 2 pin of second source module and feedback pin 4 pin, 2 pin of the first inductance export second source V2, the second electric capacity be connected to second source V2 and publicly between; Power supply input pin 1 pin of the 3rd power module connects second source V2, and input power lower margin 2 pin connects publicly, and out-put supply pin 3 pin exports the 3rd power supply V3, the 3rd electric capacity be connected to the 3rd power supply V3 and publicly between.
Described microcontroller circuit, is made up of microcontroller, the first crystal oscillator, the 4th electric capacity, the 5th electric capacity; The power input of microcontroller connects the 3rd power supply V3; Microcontroller connect the first crystal oscillator between crystal oscillator input pin OSCIN, crystal oscillator output pin OSCOUT; Crystal oscillator input pin OSCIN is connected publicly by the 4th electric capacity, and crystal oscillator output pin OSCOUT is connected publicly by the 5th electric capacity.
Described button inputting circuits, is made up of the first resistance, the second resistance, the 3rd resistance, the first button, the second button, the 3rd button; 2 pin of the first button connect the input pin PB0 of microcontroller, meanwhile, connect the 3rd power supply V3 by the first resistance; 2 pin of the second button connect the input pin PB1 of microcontroller, meanwhile, connect the 3rd power supply V3 by the second resistance; 2 pin of the 3rd button connect the input pin PB2 of microcontroller, meanwhile, connect the 3rd power supply V3 by the 3rd resistance.
Described sound light alarming circuit, is made up of the 4th resistance, the 5th resistance, the first light emitting diode, the first triode, hummer; 3rd power supply V3 connects the output pin PB3 of microcontroller by the 4th resistance, the first light emitting diode; 3rd power supply V3 connects the collector of the first triode by hummer, the base stage of the first triode connects the output pin PB4 of microcontroller by the 5th resistance, and the emitter of the first triode connects publicly.
Described display circuit, be made up of LCD, the second triode, the 6th resistance, the power supply input pin VCC of LCD connects second source V2, register selects pin RS to connect the output pin PC8 of microcontroller, read-write pin R/W connects the output pin PC9 of microcontroller, and enable pin EN connects the output pin PC10 of microcontroller, and data pin DB0-DB7 connects the output pin PC0-PC7 of microcontroller, backlight positive pole pin LED+ connects second source V2, and backlight negative pole pin LED-connects the emitter of the second triode; The base stage of the second triode connects the output pin PC11 of microcontroller U4 by the 6th resistance, the collector of the second triode connects publicly.
Described mini-printer circuit, by level transferring chip, mini-printer forms, the power supply input pin VCC of level transferring chip connects the 3rd power supply V3, sends the serial ports output pin PA9 of input pin T1IN connection microcontroller, send the data receiver pin RXD that output pin T1OUT connects mini-printer, receive the data transmission pin TXD that input pin R1IN connects mini-printer, receive the serial ports input pin PA10 that output pin R1OUT connects microcontroller; Mini-printer is powered by second source V2.
Described pressure sensor circuit, is made up of the first pressure transducer, the second pressure transducer, the 6th electric capacity, the 7th electric capacity; First pressure transducer is powered by the first power supply V1, and the pressure signal output pin OUT of the first pressure transducer connects the simulating signal input pin PA0 of microcontroller, and meanwhile, pressure signal output pin OUT connects the 6th electric capacity; Second pressure transducer is powered by the first power supply V1, and the pressure signal output pin OUT of the second pressure transducer connects the simulating signal input pin PA1 of microcontroller, and meanwhile, pressure signal output pin OUT connects the 7th electric capacity.
Described displacement sensor circuit, by the first displacement transducer, second displacement sensor, the 8th electric capacity, the 9th electric capacity composition; First displacement transducer is powered by the first power supply V1, and the displacement signal output pin OUT of the first displacement transducer connects the simulating signal input pin PA2 of microcontroller, and meanwhile, displacement signal output pin OUT connects the 8th electric capacity; Second displacement sensor is powered by the first power supply V1, and the displacement signal output pin OUT of second displacement sensor connects the simulating signal input pin PA3 of microcontroller, and meanwhile, displacement signal output pin OUT connects the 9th electric capacity.
Described MICRO SD card circuit, is made up of MICRO SD card, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance; MICRO SD card circuit is powered by the 3rd power supply V3, and MICRO SD card adopts SPI to be connected with microcontroller; Chip select pin the 2nd pin of MICRO SD card connects the output pin PA4 of microcontroller, connects the 3rd power supply V3 by the 7th resistance simultaneously; The data input pin DI of MICRO SD card connects the MOSI pin PA7 of microcontroller, connects the 3rd power supply V3 by the 8th resistance simultaneously; The clock pin CLK of MICRO SD card connects the SCLK pin PA5 of microcontroller, connects the 3rd power supply V3 by the 9th resistance simultaneously; The data output pin DO of MICRO SD card connects the MISO pin PA6 of microcontroller, connects the 3rd power supply V3 by the tenth resistance simultaneously.
Described first power module model is LH60-20B12.
Described second source module model is LM2576.
Described first power module model is HT7533.
Described microcontroller model is STM32F103R8T6.
Described LCD type number is LCD1602.
Described mini-printer model is SP-RMDIIIB.
Described pressure transducer model is NS-P-I-2/3X6.
Institute's displacement sensors model is NS-WY03-400.
The beneficial effects of the utility model are, a kind of microprocessor controls, railway vehicle wheel is to bearing press mounting tracer, Real-time Collection wheel set bearing press-fit displacement data and press-fit pressure data, be saved in MICRO SD card, and printed the displacement and pressure curve of bearing press mounting by mini-printer, there is the advantage of the displacement and pressure curve of record and printing bearing press mounting automatically.
Accompanying drawing explanation
Fig. 1 is the system architecture block scheme of a kind of railway vehicle wheel to bearing press mounting tracer.
Fig. 2 is the power circuit principle figure of a kind of railway vehicle wheel to bearing press mounting tracer.
Fig. 3 is microcontroller circuit, button inputting circuits, sound light alarming circuit, display circuit, mini-printer circuit, pressure sensor circuit, displacement sensor circuit, the MICRO SD card circuit theory diagrams of a kind of railway vehicle wheel to bearing press mounting tracer.
Fig. 4 is the main program flow chart of a kind of railway vehicle wheel to bearing press mounting tracer.
Embodiment
The utility model is further illustrated as follows with example by reference to the accompanying drawings.
As shown in Figure 1, a kind of railway vehicle wheel is to bearing press mounting tracer, comprise power circuit (1), microcontroller circuit (2), button inputting circuits (3), sound light alarming circuit (4), display circuit (5), mini-printer circuit (6), pressure sensor circuit (7), displacement sensor circuit (8), MICRO SD card circuit (9); In the process that wheel set bearing press-fits, pass through microcontroller, press-fiting displacement data and press-fiting pressure data of Real-time Collection wheel set bearing, is saved in MICRO SD card, and prints displacement and pressure curve, operating personnel's job number, wheel check mark, the bearing number of bearing press mounting by mini-printer.
As shown in Figure 2, a kind of railway vehicle wheel is powered by alternating current 220V to bearing press mounting tracer; Power circuit (1), is made up of the first power module U1, second source module U2, the 3rd power module U3, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the first inductance L 1, first diode D1; Alternating current 220V power supply connects input power pin 1 pin and 2 pin of the first power module U1, and out-put supply pin 3 pin of the first power module U1 exports the first power supply V1, and out-put supply lower margin 4 pin exports publicly, the first electric capacity C1 in parallel between 3 pin and 4 pin; First power supply V1, voltage is direct current 12V, can export maximum current 6A, supplies the first pressure transducer BP1, the second pressure transducer BP2, the first displacement transducer B1, second displacement sensor B2 working power; Power supply input pin 1 pin of second source module U2 connects the first power supply V1, input power lower margin 3 pin connects publicly, export control pin 5 pin to connect publicly, output pin 2 pin connects the first diode D1 negative electrode, first diode D1 anode connects publicly, 2 pin connecting the first inductance L 1, first inductance L 1 between output pin 2 pin of second source module U2 and feedback pin 4 pin export second source V2, the second electric capacity C2 be connected to second source V2 and publicly between; Second source V2, voltage is direct current 5V, can export maximum current 3A, supply liquid crystal display LCD1, mini-printer PTR working power; Power supply input pin 1 pin of the 3rd power module U3 connects second source V2, and input power lower margin 2 pin connects publicly, out-put supply pin 3 pin export the 3rd power supply V3, the 3rd electric capacity C3 be connected to the 3rd power supply V3 and publicly between; 3rd power supply V3, voltage is direct current 3.3V, can export maximum current 100mA, supply microcontroller U4, button inputting circuits (3), sound light alarming circuit (4), level transferring chip U5 working power.
As shown in Figure 3, microcontroller circuit (2), is made up of microcontroller U4, the first crystal oscillator Y1, the 4th electric capacity C4, the 5th electric capacity C5; The power input of microcontroller U4 connects the 3rd power supply V3; Microcontroller U4 connects the first crystal oscillator Y1 between crystal oscillator input pin OSCIN, crystal oscillator output pin OSCOUT; Crystal oscillator input pin OSCIN is connected publicly by the 4th electric capacity C4, and crystal oscillator output pin OSCOUT is connected publicly by the 5th electric capacity C5.
Button inputting circuits (3), is made up of the first resistance R1, the second resistance R2, the 3rd resistance R3, the first button S1, the second button S2, the 3rd button S3; 2 pin of the first button S1 connect the input pin PB0 of microcontroller U4, meanwhile, connect the 3rd power supply V3 by pull-up resistor first resistance R1; 2 pin of the second button S2 connect the input pin PB1 of microcontroller U4, meanwhile, connect the 3rd power supply V3 by pull-up resistor second resistance R2; 2 pin of the 3rd button S3 connect the input pin PB2 of microcontroller U4, meanwhile, connect the 3rd power supply V3 by pull-up resistor the 3rd resistance R3; The function of the first button S1 is " arrange/print ", the function of the second button S2 is " upwards/clearing ", the function of the 3rd button S3 is " downwards/record "; The first button S1, the second button S2 can be passed through, the data such as the 3rd button S3 setting operation personnel job number, wheel are checked the number, bearing number, simultaneously can the function such as control data clearing, record, printing.
Sound light alarming circuit (4), is made up of the 4th resistance R4, the 5th resistance R5, the first LED 1, first triode Q1, hummer BEEP; 3rd power supply V3 connects the output pin PB3 of microcontroller U4 by the 4th resistance R4, the first LED 1; 3rd power supply V3 connects the collector of the first triode Q1 by hummer BEEP, and the base stage of the first triode Q1 connects the output pin PB4 of microcontroller U4 by the 5th resistance R5, and the emitter of the first triode Q1 connects publicly; When detecting that pressure, displacement data are wrong, the output pin PB3 output low level of microcontroller U4, first LED 1 conducting is lighted, the output pin PB4 of microcontroller U4 exports high level, control the first triode Q1 saturation conduction, make hummer BEEP connect work, carry out sound and light alarm.
Display circuit (5) is made up of liquid crystal display LCD1, the second triode Q2, the 6th resistance R6, the power supply input pin VCC of liquid crystal display LCD1 connects second source V2, register selects pin RS to connect the output pin PC8 of microcontroller U4, read-write pin R/W connects the output pin PC9 of microcontroller U4, enable pin EN connects the output pin PC10 of microcontroller U4, data pin DB0-DB7 connects the output pin PC0-PC7 of microcontroller U4, backlight positive pole pin LED+ connects second source V2, and backlight negative pole pin LED-connects the emitter of the second triode Q2; The base stage of the second triode Q2 connects the output pin PC11 of microcontroller U4 by the 6th resistance R6, the collector of the second triode Q2 connects publicly; Operating personnel's job number can be shown, the data such as wheel is checked the number, bearing number, system state.
Mini-printer PTR circuit (6), by level transferring chip U5, mini-printer PTR forms, the power supply input pin VCC of level transferring chip U5 connects the 3rd power supply V3, sends the serial ports output pin PA9 of input pin T1IN connection microcontroller U4, send the data receiver pin RXD that output pin T1OUT connects mini-printer PTR, receive the data transmission pin TXD that input pin R1IN connects mini-printer PTR, receive the serial ports input pin PA10 that output pin R1OUT connects microcontroller U4; Mini-printer PTR is powered by second source V2; Can be controlled by microcontroller U4, print the displacement and pressure curve of bearing press mounting, operating personnel's job number, wheel check mark, bearing number.
Pressure sensor circuit (7), is made up of the first pressure transducer BP1, the second pressure transducer BP2, the 6th electric capacity C6, the 7th electric capacity C7; First pressure transducer BP1 is powered by the first power supply V1, and the pressure signal output pin OUT of the first pressure transducer BP1 connects the simulating signal input pin PA0 of microcontroller U4, and meanwhile, pressure signal output pin OUT connects the 6th electric capacity C6; Second pressure transducer BP2 is powered by the first power supply V1, and the pressure signal output pin OUT of the second pressure transducer BP2 connects the simulating signal input pin PA1 of microcontroller U4, and meanwhile, pressure signal output pin OUT connects the 7th electric capacity C7; First pressure transducer BP1, the second pressure transducer BP2, detect pressure data during left and right bearing press mounting respectively.
Displacement sensor circuit (8), by the first displacement transducer B1, second displacement sensor B2, the 8th electric capacity C8, the 9th electric capacity C9 forms; First displacement transducer B1 is powered by the first power supply V1, and the displacement signal output pin OUT of the first displacement transducer B1 connects the simulating signal input pin PA2 of microcontroller U4, and meanwhile, displacement signal output pin OUT connects the 8th electric capacity C8; Second displacement sensor B2 is powered by the first power supply V1, and the displacement signal output pin OUT of second displacement sensor B2 connects the simulating signal input pin PA3 of microcontroller U4, and meanwhile, displacement signal output pin OUT connects the 9th electric capacity C9; First displacement transducer B1, second displacement sensor B2, detect displacement data during left and right bearing press mounting respectively.
MICRO SD card circuit (9), is made up of MICRO SD card U6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the tenth resistance R10; MICRO SD card circuit is powered by the 3rd power supply V3, and MICRO SD card U6 adopts SPI to be connected with microcontroller; Chip select pin the 2nd pin of MICRO SD card U6 connects the output pin PA4 of microcontroller, connects the 3rd power supply V3 by the 7th resistance R7 simultaneously; The data input pin DI of MICRO SD card U6 connects the MOSI pin PA7 of microcontroller, connects the 3rd power supply V3 by the 8th resistance R8 simultaneously; The clock pin CLK of MICRO SD card U6 connects the SCLK pin PA5 of microcontroller, connects the 3rd power supply V3 by the 9th resistance R9 simultaneously; The data output pin DO of MICRO SD card U6 connects the MISO pin PA6 of microcontroller, connects the 3rd power supply V3 by the tenth resistance R10 simultaneously; The data such as microcontroller preserves displacement and pressure curve by SPI, operating personnel's job number, wheel are checked the number, bearing number are to MICRO SD card, whenever can read by MICRO SD wheel is right arbitrarily displacement and pressure curve, operating personnel's job number, wheel are checked the number, bearing number etc., realize data persistence.
As shown in Figure 4, be main program flow chart, main flow job step specifically:
Step one, power-up initializing;
Step 2, input operation personnel job number, wheel are checked the number, bearing number;
Step 3, microcontroller passes through the first pressure transducer, the second pressure transducer, the first displacement transducer, second displacement sensor record wheel to bearing press mounting pressure, displacement data;
Step 4, the data such as displacement and pressure curve, operating personnel's job number, wheel are checked the number, bearing number are saved in MICRO SD card;
Step 5, prints displacement and pressure curve, operating personnel's job number, wheel check mark, bearing number;
Step 6, forwards step 2 to.
Should be understood that; for the utility model through absolutely proving; the embodiment of multiple conversion and modification can also be had; be not limited to the instantiation of above-mentioned embodiment; above-mentioned example is as just explanation of the present utility model; instead of restriction, in a word, which apparent conversion or alternative and remodeling to those skilled in the art protection domain of the present utility model comprises.
Claims (1)
1. railway vehicle wheel is to a bearing press mounting tracer, comprises power circuit, microcontroller circuit, button inputting circuits, sound light alarming circuit, display circuit, mini-printer circuit, pressure sensor circuit, displacement sensor circuit, MICRO SD card circuit; It is characterized in that described power circuit, be made up of the first power module, second source module, the 3rd power module, the first electric capacity, the second electric capacity, the 3rd electric capacity, the first inductance, the first diode; Alternating current 220V power supply connects the input power pin of the first power module, and the out-put supply pin of the first power module exports the first power supply V1; The power supply input pin of second source module connects the first power supply V1, and output pin 2 pin connects the first diode cathode, and connect the first inductance between the output pin of second source module and feedback pin, 2 pin of the first inductance export second source V2; The power supply input pin of the 3rd power module connects second source V2, and out-put supply pin exports the 3rd power supply V3; Described microcontroller circuit, is made up of microcontroller, the first crystal oscillator, the 4th electric capacity, the 5th electric capacity; Described button inputting circuits, is made up of the first resistance, the second resistance, the 3rd resistance, the first button, the second button, the 3rd button; Described sound light alarming circuit, is made up of the 4th resistance, the 5th resistance, the first light emitting diode, the first triode, hummer; 3rd power supply V3 connects the output pin PB3 of microcontroller by the 4th resistance, the first light emitting diode; 3rd power supply V3 connects the collector of the first triode by hummer, the base stage of the first triode connects the output pin PB4 of microcontroller by the 5th resistance, and the emitter of the first triode connects publicly; Described display circuit, be made up of LCD, the second triode, the 6th resistance, the power supply input pin VCC of LCD connects second source V2, register selects pin RS to connect the output pin PC8 of microcontroller, read-write pin R/W connects the output pin PC9 of microcontroller, and enable pin EN connects the output pin PC10 of microcontroller, and data pin DB0-DB7 connects the output pin PC0-PC7 of microcontroller, backlight positive pole pin LED+ connects second source V2, and backlight negative pole pin LED-connects the emitter of the second triode; The base stage of the second triode connects the output pin PC11 of microcontroller U4 by the 6th resistance; Described mini-printer circuit, by level transferring chip, mini-printer forms, the power supply input pin VCC of level transferring chip connects the 3rd power supply V3, sends the serial ports output pin PA9 of input pin T1IN connection microcontroller, send the data receiver pin RXD that output pin T1OUT connects mini-printer, receive the data transmission pin TXD that input pin R1IN connects mini-printer, receive the serial ports input pin PA10 that output pin R1OUT connects microcontroller; Mini-printer is powered by second source V2; Described pressure sensor circuit, is made up of the first pressure transducer, the second pressure transducer, the 6th electric capacity, the 7th electric capacity; First pressure transducer is powered by the first power supply V1, and the pressure signal output pin OUT of the first pressure transducer connects the simulating signal input pin PA0 of microcontroller; Second pressure transducer is powered by the first power supply V1, and the pressure signal output pin OUT of the second pressure transducer connects the simulating signal input pin PA1 of microcontroller; Described displacement sensor circuit, by the first displacement transducer, second displacement sensor, the 8th electric capacity, the 9th electric capacity composition; First displacement transducer is powered by the first power supply V1, and the displacement signal output pin OUT of the first displacement transducer connects the simulating signal input pin PA2 of microcontroller; Second displacement sensor is powered by the first power supply V1, and the displacement signal output pin OUT of second displacement sensor connects the simulating signal input pin PA3 of microcontroller; Described MICRO SD card circuit, is made up of MICRO SD card, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance; MICRO SD card circuit is powered by the 3rd power supply V3, and MICRO SD card adopts SPI to be connected with microcontroller; Chip select pin the 2nd pin of MICRO SD card connects the output pin PA4 of microcontroller, connects the 3rd power supply V3 by the 7th resistance simultaneously; The data input pin DI of MICRO SD card connects the MOSI pin PA7 of microcontroller, connects the 3rd power supply V3 by the 8th resistance simultaneously; The clock pin CLK of MICRO SD card connects the SCLK pin PA5 of microcontroller, connects the 3rd power supply V3 by the 9th resistance simultaneously; The data output pin DO of MICRO SD card connects the MISO pin PA6 of microcontroller, connects the 3rd power supply V3 by the tenth resistance simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520324404.6U CN204694289U (en) | 2015-05-20 | 2015-05-20 | A kind of railway vehicle wheel is to bearing press mounting tracer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520324404.6U CN204694289U (en) | 2015-05-20 | 2015-05-20 | A kind of railway vehicle wheel is to bearing press mounting tracer |
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| Publication Number | Publication Date |
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| CN204694289U true CN204694289U (en) | 2015-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520324404.6U Withdrawn - After Issue CN204694289U (en) | 2015-05-20 | 2015-05-20 | A kind of railway vehicle wheel is to bearing press mounting tracer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848897A (en) * | 2015-05-20 | 2015-08-19 | 湖南工业大学 | Railway vehicle wheel set bearing press-mounting curve recording device |
| CN106249636A (en) * | 2016-04-20 | 2016-12-21 | 上海汇众汽车制造有限公司 | The control system of a kind of bush press and control method thereof |
-
2015
- 2015-05-20 CN CN201520324404.6U patent/CN204694289U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848897A (en) * | 2015-05-20 | 2015-08-19 | 湖南工业大学 | Railway vehicle wheel set bearing press-mounting curve recording device |
| CN104848897B (en) * | 2015-05-20 | 2017-04-26 | 湖南工业大学 | Railway vehicle wheel set bearing press-mounting curve recording device |
| CN106249636A (en) * | 2016-04-20 | 2016-12-21 | 上海汇众汽车制造有限公司 | The control system of a kind of bush press and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151007 Effective date of abandoning: 20170426 |
|
| AV01 | Patent right actively abandoned |