CN202648963U - Tread braking unit fatigue test bench - Google Patents
Tread braking unit fatigue test bench Download PDFInfo
- Publication number
- CN202648963U CN202648963U CN 201220179932 CN201220179932U CN202648963U CN 202648963 U CN202648963 U CN 202648963U CN 201220179932 CN201220179932 CN 201220179932 CN 201220179932 U CN201220179932 U CN 201220179932U CN 202648963 U CN202648963 U CN 202648963U
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- braking unit
- tread
- tread braking
- fatigue test
- screw mandrel
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Abstract
The utility model relates to a tread braking unit fatigue test bench. The tread braking unit fatigue test bench comprises an electric controller which is used for the simulation control gas path, a tool for clamping the tread braking unit, a reset mechanism which is used for the unit brake extension bar of the tread braking unit, a screw rod transmission mechanism for simulating the tread wear condition, and a horizontal working table. The tool is installed under the tread braking unit, linear guide rails which are installed on the working table are arranged on one side of the tool in the horizontal direction, and the reset mechanism and the screw rod transmission mechanism are arranged on the linear guide rails. According to the utility model, the working condition of the vehicle gas path is simulated through the PLC control system simulation control gas path, the tread braking unit is actuated, when the brake is released, a stop block is driven by servo motors to draw back so as to simulate the tread wear condition, and then the braking operation is repeated until the stop block draws back to a certain position, the two servo motors are used to drive the extension bar of the brake and the stop block to make the extension bar of the brake and the stop block to reset respectively, the action of the tread braking unit is checked to see whether an abnormal condition exists after the process is performed a certain number of times.
Description
Technical field
The utility model relates to the rolling stock braking technology, relates in particular to a kind of tread braking unit fatigue test board be used to carrying out the tread braking unit test.
Background technology
The tread units detent is to use at present comparatively widely a kind of unit brake both at home and abroad, is applicable to train speed per hour below 80km/h, and axle focuses on 16t following locomotive, motor-car and railcar.The tread units detent is one of terminal executive component of a whole set of brake system, be the kinetic transformation of vehicle interior energy by the friction between brake shoe and the wheel, thereby reach the purpose of braking, the quality of its performance directly affects stability, comfortableness and the security of vehicle operating.Torture test is the stable effective means of check tread units detent long-time running.
The major function of tread braking unit comprises: alleviation, service braking and parking brake commonly used.Fig. 1 a is the alleviation synoptic diagram commonly used of tread braking unit, as shown in Figure 1a, when commonly used the alleviation, parks cylinder gas P1 and enters and park cylinder a, parking in the cylinder a has pressure, and checking cylinder gas P2 discharges checking cylinder b, and checking cylinder b is interior without pressure, brake piston b1 resets, and leaves wheel c, release of brake.
Fig. 1 b is the service braking synoptic diagram of tread braking unit, shown in Fig. 1 b, at this moment, parking cylinder gas P1 enters and parks cylinder a, checking cylinder gas P2 enters checking cylinder b, and parking in the cylinder a and in the checking cylinder b has pressure, parks all holddown springs of piston a1 and brake piston b1, brake piston b1 compresses wheel c to left movement, produces service braking.
Fig. 1 c is the parking brake synoptic diagram of tread braking unit, shown in Fig. 1 c, at this moment, park cylinder gas P1 discharge and park cylinder a, checking cylinder gas P2 discharges checking cylinder b, and parking in cylinder a and the checking cylinder b does not all have pressure, but since the elasticity coefficient of the first back-moving spring a2 of parking piston greater than brake piston the second back-moving spring b2, so brake piston b1 compresses wheel c with parking piston a1 to left movement, and produces parking brake.
Fatigue property test to tread braking unit is a very important link of test products performance, the essence of test be exactly the test tread braking unit in the process of above-mentioned alleviation commonly used, service braking and parking brake its internal mechanism, power output, output displacement and park cylinder and checking cylinder in gaseous tension whether can also meet design requirement.
But, can not simulate the actual condition of tread braking unit in the prior art to the testing apparatus of tread units detent, major defect shows as: for a long time use of tread units detent can bring wearing and tearing, after the wearing and tearing, tread braking unit extension bar meeting self-feed, existing equipment is not considered this phenomenon, and is imprecise to the test of the mechanism in the tread units detent.
The utility model content
For the defects of prior art, the utility model provides a kind of test operation simple, the tread braking unit fatigue test board that reliability height and automaticity are high.
The utility model provides a kind of tread braking unit fatigue test board, comprise tread braking unit, be used for simulation control gas circuit electric controller, be used for the described tread braking unit of clamping frock, be used for the unit brake extension bar of tread braking unit resetting-mechanism, be used for lead screw transmission mechanism and a horizontal operation table top of the wearing and tearing of simulation tread, described frock is installed on the tread braking unit below, the horizontal direction of frock one side is provided with the line slideway that is installed in the work top top, and resetting-mechanism and lead screw transmission mechanism are located at the line slideway top.
Described resetting-mechanism comprises impact bar, the servomotor that resets, gear wheel, motor support piece, guide support, the front end of described impact bar connects gear wheel, guide support is located on the impact bar, the servomotor that resets is fixed in impact bar by the motor support piece, and described gear wheel is connected with the servomotor that resets by pinion wheel.
Described lead screw transmission mechanism comprises is impacted block, screw mandrel and stressed block, and described screw mandrel is connected with the impact bar of resetting-mechanism by impacting block, and stressed block is located on the screw mandrel, and described screw mandrel is connected with the screw mandrel servomotor by the motor fixed stop.
The gear wheel of described impact bar front end is by bearing pin linkage unit detent extension bar.
The central axis place of the central axis of described impact bar and screw mandrel in the same horizontal line.
Be provided with thrust ball bearing between described screw mandrel and the impact block.
Described screw mandrel is the acme thread screw mandrel.
Described impact block, motor fixed stop are fixed in the line slideway top, and move along the line slideway direction, and stressed block is fixed by bolt and worktable.
Also be provided with along the travel switch of line slideway position on the described work top.
Described electric controller comprises that a simulation control gas circuit and that is used for the simulating vehicle gas circuit is used for controlling the driving of described simulation control gas circuit and makes tread braking unit according to the PLC control system of experimental procedure action, and described simulation control gas circuit is connected with checking cylinder with the cylinder of parking of tread braking unit; Described PLC control system is connected with the drive system that solenoid valve, travel switch and servomotor in the gas circuit are controlled in simulation.
Described simulation control gas circuit comprises respectively parks wind regime and two air feed branch roads that cylinder is connected with checking cylinder with tread braking unit.
Be provided with two-position three way magnetic valve and two-position three-way on the described air feed branch road.
By adopting above-mentioned technical scheme, the beneficial effects of the utility model are: the tread braking unit fatigue test board that the utility model provides, by the work of PLC control system control simulation control gas circuit simulating vehicle gas circuit, the control tread braking unit moves according to test procedure, simultaneously driven by servomotor screw mandrel drive is impacted the block batch (-type) and is retreated, the wearing and tearing of simulation tread, retreat into qualifying bit postpone, the extension bar of driven by servomotor tread braking unit resets, the driven by servomotor screw mandrel drives block, so process is carried out repeatedly, through behind certain number of times, whether the action of test tread braking unit has unusually, check the screw mandrel in the tread brake device, feed nut, adjust switch, the fatigue behaviour of the key components such as guiding nut, expose the incipient fault that the tread units detent exists, find out the weak link in its design and the manufacture process, for the further optimal design of tread units detent provides foundation.
Description of drawings
Fig. 1 a is the alleviation synoptic diagram commonly used of the utility model tread braking unit fatigue test board.
Fig. 1 b is the service braking synoptic diagram of the utility model tread braking unit fatigue test board.
Fig. 1 c is the parking brake synoptic diagram of the utility model tread braking unit fatigue test board.
Fig. 2 is the structural representation of the utility model tread braking unit fatigue test board one embodiment.
Fig. 3 is the schematic diagram of the simulation control gas circuit of the utility model tread braking unit fatigue test board one embodiment.
Label title among the figure: a-parks cylinder; The b-checking cylinder; A1-parks piston; The b1-brake piston; The large back-moving spring of a2-; The little back-moving spring of b2-; The c-wheel; P1-parks cylinder gas; P2-checking cylinder gas; The 1-tread braking unit; The 2-frock; The 3-pinion wheel; The 4-servomotor that resets; The 5-impact bar; The 6-thrust ball bearing; The 7-screw mandrel; The 8-shaft coupling; 9-screw mandrel servomotor; The 10-worktable; 11-unit brake extension bar; The 12-bearing pin; The 13-gear wheel; 14-motor support piece; The 15-guide support; 16-impacts block; The stressed block of 17-; 18-motor fixed stop; The 19-line slideway; The 20-filtering pressure reducing valve; The 21-reduction valve; The 22-reservoir; 23-two-bit triplet Pneumatic valve; 24-two-bit triplet solenoid valve; The 25-reduction valve; The 20-resetting-mechanism; The 30-lead screw transmission mechanism.
Embodiment
Further specify the technical scheme of the utility model embodiment below in conjunction with the drawings and specific embodiments.
As shown in Figure 2, the utility model provides a kind of tread braking unit fatigue test board, comprise tread braking unit 1, the electric controller that is used for simulation control gas circuit, the frock 2 that is used for the described tread braking unit 1 of clamping, the resetting-mechanism 20 that is used for the unit brake extension bar 11 of tread braking unit 1, the lead screw transmission mechanism 30 and the horizontal operation table top 10 that are used for the wearing and tearing of simulation tread, described frock 2 is installed on tread braking unit 1 below, the horizontal direction of frock 2 one sides is provided with the line slideway 19 that is installed in work top 10 tops, resetting-mechanism 20 and lead screw transmission mechanism 30 are located at line slideway 19 tops, also are provided with along the travel switch of line slideway 19 positions on the described work top 10.
Described resetting-mechanism 20 comprises impact bar 5, servomotor 4 resets, gear wheel 13, motor support piece 14, guide support 15, the front end of described impact bar 5 connects gear wheel 13, guide support 15 is located on the impact bar 5, the servomotor 4 that resets is fixed in impact bar 5 by motor support piece 14, described gear wheel 13 is connected with the servomotor 4 that resets by pinion wheel 3, the resetting-mechanism 20 of the unit brake extension bar of described tread braking unit 1 can reset unit brake extension bar 11 automatically, the gear wheel 13 of impact bar 5 front ends is by bearing pin 12 linkage unit detent extension bars 11, and impact bar 5 can rotate and rectilinear motion in guide support 15.
Described lead screw transmission mechanism 30 comprises is impacted block 16, screw mandrel 7 and stressed block 17, described screw mandrel 7 is connected with the impact bar 5 of resetting-mechanism 20 by impacting block 16, stressed block 17 is located on the screw mandrel 7, described screw mandrel 7 is connected with screw mandrel servomotor 9 by motor fixed stop 18, described impact block 16, motor fixed stop 18 are fixed in line slideway 19 tops, and move along line slideway 19 directions, stressed block 17 is fixed by M20 bolt and worktable 10.
Testing table can be simulated the wearing and tearing of tread, impacting block 16 can move along line slideway, drive by lead screw transmission mechanism 30, screw mandrel 7 is the acme thread screw mandrel, can realize self-locking, and screw mandrel drives by servomotor 8, screw mandrel 7 rotates, nut is fixed, thereby realizes seesawing of screw mandrel, drives to impact block 16 and motor fixed stop 18 and move along line slideway.The central axis place of the central axis of described impact bar 5 and screw mandrel 7 in impact process, can guarantee that impulsive force does not produce off-centre in the same horizontal line.Be provided with thrust ball bearing 6 between described screw mandrel 7 and the impact block 16, can guarantee that screw mandrel well rotates, bear simultaneously large axial impact force.
Described electric controller comprises that a simulation control gas circuit and that is used for the simulating vehicle gas circuit is used for controlling the driving of described simulation control gas circuit and makes tread braking unit 1 according to the PLC control system of experimental procedure action, and described simulation control gas circuit is connected with checking cylinder with the cylinder of parking of tread braking unit 1; Described PLC control system is connected with the drive system that solenoid valve, travel switch and servomotor in the gas circuit are controlled in simulation, described simulation control gas circuit comprises respectively parks wind regime and two air feed branch roads that cylinder is connected with checking cylinder with tread braking unit 1, is provided with two-position three way magnetic valve and two-position three-way on the described air feed branch road.
When the tread braking unit fatigue test board that utilizes present embodiment is tested, assign instruction by the PLC control system, simulation control gas circuit begins action, piston a1 and brake piston b1 motion are parked in driving, it is mobile backward together that thereby unit brake extension bar 11 drives impact bar 5, when the rear free end of impact bar 5 touches impact block 16, just be blocked, can not continue again mobile, behind the certain hour, simulation control gas circuit drives parks piston a1 and brake piston b1 motion, making unit brake extension bar 11 drive impact bar 5 regains forward together, control servomotor 9 this moment and drive screw mandrel 7 rotations, impact block 16 is stopped behind the motion certain position backward, then simulation control gas circuit is moved again, piston a1 and brake piston b1 motion are parked in driving, it is mobile backward together that thereby unit brake extension bar 11 drives impact bar 5, above process is carried out repeatedly, retreat into certain position until impact block 16, servomotor 4 actions reset, driver element detent extension bar 11 resets forward, and screw mandrel servomotor 9 drives impact block 16 and resets forward.Said process is tested repeatedly, and whether the fatigue behaviour index of test cell detent meets the demands.As seen by above-mentioned, tread braking unit fatigue test board of the present utility model has been realized the robotization of test.
The utility model one embodiment utilizes tread braking unit fatigue test board of the present utility model to carry out torture test.In the above-described embodiments, as shown in Figure 3, be provided with reduction valve 21, reduction valve 25, two-position 23 and two-position three way magnetic valve 24 on the air feed branch road.That is, thereby regulate the pressure of place gas circuit pressure simulating vehicle gas circuit by reduction valve 21, by the controlled pressure of reduction valve 25 output two-positions 23, by the break-make of two-position three way magnetic valve 24 control two-positions 23.
The specific works process that gas circuit is controlled in this simulation is as follows: after assigning work order by the PC control system, at first, then wind regime filters decompression through manual 20 pairs of wind regimes of reduction valve by being used for the cutout cock of break-make control.Wind regime after the pressure regulation is shunted by the four-way gas path plate and is divided into four air feed branch roads.Be example by first road direction checking cylinder b air inlet, wind regime converts required pressure to through behind the reduction valve 21, then processes through the voltage stabilizing of gas-holder 22, enters checking cylinder b through 2/2-way Pneumatic valve 23.When checking cylinder b passed through the first branch road exhaust, checking cylinder b flow to two-bit triplet Pneumatic valve 23 and enters atmosphere.Second branch road and article one branch road are similar, and what just finally be connected with 2/2-way Pneumatic valve 23 is to park cylinder a.Article three, branch road is through behind the reduction valve 25, converts required pressure to, then through the enter controlled pressure port of two-bit triplet Pneumatic valve 23 of 2/2-way solenoid valve 24, realizes the control to two-bit triplet Pneumatic valve 23.The four the tunnel is similar with Third Road, do not do at this and give unnecessary details.
This simulation control gas circuit has realized the simulation to the vehicle gas circuit, and can directly be controlled by the PLC control system, has guaranteed the reliability of final test findings, also is an importance of tread braking unit being carried out automatic test.
It should be noted that at last: above embodiment only in order to the technical solution of the utility model to be described, is not intended to limit; Although with reference to previous embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (10)
1. tread braking unit fatigue test board, it is characterized in that: comprise tread braking unit (1), the electric controller that is used for simulation control gas circuit, the frock (2) that is used for the described tread braking unit of clamping (1), the resetting-mechanism (20) that is used for the unit brake extension bar (11) of tread braking unit (1), the lead screw transmission mechanism (30) and the horizontal operation table top (10) that are used for the wearing and tearing of simulation tread, described frock (2) is installed on tread braking unit (1) below, the horizontal direction of frock (2) one sides is provided with the line slideway (19) that is installed in work top (10) top, and resetting-mechanism (20) and lead screw transmission mechanism (30) are located at line slideway (19) top;
Described resetting-mechanism (20) comprises impact bar (5), the servomotor that resets (4), gear wheel (13), motor support piece (14), guide support (15), the front end of described impact bar (5) connects gear wheel (13), guide support (15) is located on the impact bar (5), the servomotor (4) that resets is fixed in impact bar (5) by motor support piece (14), and described gear wheel (13) is connected with the servomotor that resets (4) by pinion wheel (3);
Described lead screw transmission mechanism (30) comprises is impacted block (16), screw mandrel (7) and stressed block (17), described screw mandrel (7) is connected with the impact bar (5) of resetting-mechanism (20) by impacting block (16), stressed block (17) is located on the screw mandrel (7), and described screw mandrel (7) is connected with screw mandrel servomotor (9) by motor fixed stop (18).
2. tread braking unit fatigue test board according to claim 1 is characterized in that: the gear wheel (13) of described impact bar (5) front end is by bearing pin (12) linkage unit detent extension bar (11).
3. tread braking unit fatigue test board according to claim 1, it is characterized in that: the central axis place of the central axis of described impact bar (5) and screw mandrel (7) in the same horizontal line.
4. the tread braking unit fatigue test board described in according to claim 1 is characterized in that: described screw mandrel (7) and impact between the block (16) and be provided with thrust ball bearing (6).
5. according to claim 1 or 4 described tread braking unit fatigue test boards, it is characterized in that: described screw mandrel (7) is the acme thread screw mandrel.
6. tread braking unit fatigue test board according to claim 1, it is characterized in that: described impact block (16), motor fixed stop (18) are fixed in line slideway (19) top, and along the motion of line slideway (19) direction, stressed block (17) is fixing by bolt and worktable (10).
7. tread braking unit fatigue test board according to claim 1 is characterized in that: also be provided with along the travel switch of line slideway (19) position on the described work top (10).
8. according to claim 1 to 7 each described tread braking unit fatigue test boards, it is characterized in that: described electric controller comprises that a simulation control gas circuit and that is used for the simulating vehicle gas circuit is used for controlling the driving of described simulation control gas circuit and makes tread braking unit (1) according to the PLC control system of experimental procedure action, and described simulation control gas circuit is connected with checking cylinder with the cylinder of parking of tread braking unit (1); Described PLC control system is connected with the drive system that solenoid valve, travel switch and servomotor in the gas circuit are controlled in simulation.
9. tread braking unit fatigue test board according to claim 8 is characterized in that: described simulation control gas circuit comprises respectively parks wind regime and two air feed branch roads that cylinder is connected with checking cylinder with tread braking unit (1).
10. tread braking unit fatigue test board according to claim 9 is characterized in that: be provided with two-position three way magnetic valve and two-position three-way on the described air feed branch road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220179932 CN202648963U (en) | 2012-04-25 | 2012-04-25 | Tread braking unit fatigue test bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220179932 CN202648963U (en) | 2012-04-25 | 2012-04-25 | Tread braking unit fatigue test bench |
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| Publication Number | Publication Date |
|---|---|
| CN202648963U true CN202648963U (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220179932 Expired - Lifetime CN202648963U (en) | 2012-04-25 | 2012-04-25 | Tread braking unit fatigue test bench |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181322A (en) * | 2015-10-10 | 2015-12-23 | 河海大学常州校区 | Feeding mechanism for rail transit brake fatigue test |
| CN107063662A (en) * | 2017-04-17 | 2017-08-18 | 青岛思锐科技有限公司 | Tread units brake pilot system |
| CN109443743A (en) * | 2019-01-15 | 2019-03-08 | 中车青岛四方车辆研究所有限公司 | Tread sweeping grinds sub- testing stand and test method |
| CN110441070A (en) * | 2019-08-13 | 2019-11-12 | 中车青岛四方车辆研究所有限公司 | Brake head cross sliding type tread foundation brake gear fatigue test system |
| CN110487568A (en) * | 2019-08-26 | 2019-11-22 | 中国铁道科学研究院集团有限公司 | Tread braking unit test device and method |
| CN110487569A (en) * | 2019-08-26 | 2019-11-22 | 中国铁道科学研究院集团有限公司 | The full-automatic testing device and method of tread braking unit |
-
2012
- 2012-04-25 CN CN 201220179932 patent/CN202648963U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181322A (en) * | 2015-10-10 | 2015-12-23 | 河海大学常州校区 | Feeding mechanism for rail transit brake fatigue test |
| CN105181322B (en) * | 2015-10-10 | 2017-08-15 | 河海大学常州校区 | A kind of track traffic brake fatigue test feed mechanism |
| CN107063662A (en) * | 2017-04-17 | 2017-08-18 | 青岛思锐科技有限公司 | Tread units brake pilot system |
| CN109443743A (en) * | 2019-01-15 | 2019-03-08 | 中车青岛四方车辆研究所有限公司 | Tread sweeping grinds sub- testing stand and test method |
| CN110441070A (en) * | 2019-08-13 | 2019-11-12 | 中车青岛四方车辆研究所有限公司 | Brake head cross sliding type tread foundation brake gear fatigue test system |
| CN110441070B (en) * | 2019-08-13 | 2020-12-22 | 中车青岛四方车辆研究所有限公司 | Fatigue test system for brake shoe support cross sliding type tread foundation brake device |
| CN110487568A (en) * | 2019-08-26 | 2019-11-22 | 中国铁道科学研究院集团有限公司 | Tread braking unit test device and method |
| CN110487569A (en) * | 2019-08-26 | 2019-11-22 | 中国铁道科学研究院集团有限公司 | The full-automatic testing device and method of tread braking unit |
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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: 20130102 Effective date of abandoning: 20160826 |
|
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |