CN103175681B - A kind of test unit for evaluating explosion-proof crane wheel-rail friction explosion-proof performance - Google Patents
A kind of test unit for evaluating explosion-proof crane wheel-rail friction explosion-proof performance Download PDFInfo
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- CN103175681B CN103175681B CN201310072273.2A CN201310072273A CN103175681B CN 103175681 B CN103175681 B CN 103175681B CN 201310072273 A CN201310072273 A CN 201310072273A CN 103175681 B CN103175681 B CN 103175681B
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Abstract
The invention discloses a kind of test unit for evaluating explosion-proof crane wheel-rail friction explosion-proof performance, the casing comprising sealing and the wheel track main part be installed in casing, running part is provided with in casing, brake portion is provided with outside casing, wheel track main part comprises centre wheel and is installed on the annular wheel track of centre wheel periphery, and casing is also provided with the drive load part be connected with wheel track main part outward.This can carry out drive load to the wheel track main part in the casing of sealing for the test unit evaluating explosion-proof crane wheel-rail friction explosion-proof performance by drive load part, centre wheel and the interaction of annular wheel track in operational process can be controlled by changing heap(ed) capacity, to simulate the various operating modes of explosion-proof crane wheel-rail friction process, thus carrying out the test of explosion-proof crane wheel-rail friction explosion-proof performance, the present invention is used for explosion-proof experimental provision field.
Description
Technical field
The present invention relates to a kind of explosion-proof test device, particularly relate to a kind of wheel-rail friction explosion-proof performance test unit.
Background technology
Explosion-proof crane all has series of products from little tonnage to large-tonnage, and consider for anti-explosion safety, the explosion-proof crane that travelling speed is slower for common crane, exists reciprocal operating condition.Explosion-proof crane wheel-rail friction Study on Problems relates to associated materials, carrying out practically operating mode, actual motion environment, thermodynamic problems, the theory etc. of blast aspect.
Explosion-proof crane wheel-rail friction thermal source can not be ignored, frictional heat source is excessive may cause combustible gas explosion, domestic considerably less to the research of explosion-proof crane wheel-rail friction Explosion-Proof, the explosion-proof performance rig for testing simultaneously for explosion-proof crane wheel-rail friction aspect does not almost have.
Summary of the invention
For solving the problem, the invention provides a kind of explosion-proof performance test unit effectively simulating explosion-proof crane wheel-rail friction operating mode.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of test unit for evaluating explosion-proof crane wheel-rail friction explosion-proof performance, the casing comprising sealing and the wheel track main part be installed in casing, running part is provided with in casing, brake portion is provided with outside casing, wheel track main part comprises centre wheel and is installed on the annular wheel track of centre wheel periphery, and casing is also provided with the drive load part be connected with wheel track main part outward.
Be further used as the improvement of technical solution of the present invention, annular wheel track comprises three sections of arc tracks that capable assembling is ring-type, and the side to the center of circle on each arc track is provided with rail groove, and the outer of centre wheel is arranged with the boss wheel limit that can embed rail groove.
Be further used as the improvement of technical solution of the present invention, pad between the intrados side of centre wheel and each arc track and be provided with some adjustment copper sheets.
Be further used as the improvement of technical solution of the present invention, centre wheel is installed on central shaft, is arranged with bearing seat between centre wheel and central shaft, is provided with temperature sensor in bearing seat.
Be further used as the improvement of technical solution of the present invention, drive load part is the some hydraulic loaded cylinders be arranged on outside casing, and hydraulic loaded cylinder is other is also provided with oil motor.
Be further used as the improvement of technical solution of the present invention, running part comprises some conical gear be engaged with each other.
Be further used as the improvement of technical solution of the present invention, the box-like body that casing comprises sealing and the gland bonnet be positioned at above box-like body, be provided with hydraulically extensible bar, be also provided with case lid securing member between box-like body and gland bonnet between box-like body and gland bonnet.
Be further used as the improvement of technical solution of the present invention, casing is provided with observation window.
Be further used as the improvement of technical solution of the present invention, in casing, be provided with fan.
Beneficial effect of the present invention: this can carry out drive load to the wheel track main part in the casing of sealing for the test unit evaluating explosion-proof crane wheel-rail friction explosion-proof performance by drive load part, centre wheel and the interaction of annular wheel track in operational process can be controlled by changing heap(ed) capacity, to simulate the various operating modes of explosion-proof crane wheel-rail friction process, thus carry out the test of explosion-proof crane wheel-rail friction explosion-proof performance.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is embodiment of the present invention inner structure side schematic view;
Fig. 2 is embodiment of the present invention inner structure vertical view;
Fig. 3 is embodiment of the present invention external structure schematic perspective view;
Fig. 4 is embodiment of the present invention wheel track main part structural representation;
Fig. 5 is embodiment of the present invention arc track structural representation;
Fig. 6 is embodiment of the present invention centre wheel structural representation.
Embodiment
With reference to Fig. 1 ~ Fig. 6, the present invention is a kind of test unit for evaluating explosion-proof crane wheel-rail friction explosion-proof performance, the casing 1 comprising sealing and the wheel track main part 2 be installed in casing 1, running part 4 is provided with in casing 1, brake portion 5 is provided with outside casing 1, wheel track main part 2 comprises centre wheel 21 and is installed on the annular wheel track 22 of centre wheel 21 periphery, and casing 1 is outer is also provided with the drive load part 3 be connected with wheel track main part 2.
This can carry out drive load to the wheel track main part 2 in the casing 1 of sealing for the test unit evaluating explosion-proof crane wheel-rail friction explosion-proof performance by drive load part 3, centre wheel 21 and the interaction of annular wheel track 22 in operational process can be controlled by changing heap(ed) capacity, to simulate the various operating modes of explosion-proof crane wheel-rail friction process, as normal rolling, gnaw rail, skid in original place, locking slip moves ahead, cross the impact of track seam crossing end face, thus carry out the test of explosion-proof crane wheel-rail friction explosion-proof performance.
As the preferred embodiment of the present invention, annular wheel track 22 comprises three sections of arc tracks 23 that capable assembling is ring-type, and the side to the center of circle on each arc track 23 is provided with rail groove 231, and the outer of centre wheel 21 is arranged with the boss wheel limit 211 that can embed rail groove 231.
As the preferred embodiment of the present invention, pad between the intrados side of centre wheel 21 and each arc track 23 and be provided with some adjustment copper sheets 24.
In this explosion-proof performance test unit, the structure of wheel track main part 2, for annular wheel track 22 being made arc-shaped and being fixed on centre wheel 21, adopts the vibrational power flow of circular orbit, while meeting testing requirements, has saved test space.In addition, by changing the thickness adjusting copper sheet 24 between centre wheel 21 and annular wheel track 22, make to produce difference in height between each section of arc track 23, and then realize the test simulation to the seam crossing of annular wheel track 22, the method is easy to operate, simply ingenious.
The thickness of copper sheet 24 is adjusted when between adjustment centre wheel 21 and arc track 23, and then when changing between each section of arc track 23 difference in height, arc track 23 radially can slide relative to centre wheel 21, centre wheel 21 is provided with the bolt hole of some ellipses, bolt can be moved with arc track 23 in bolt hole, realize bolt when adjustment copper sheet 24 is different-thickness to arc track 23 fixing at centre wheel 21.
When doing experiment, this wheeled rail structure well can replace the effect of on-the-spot track, and meanwhile, for explosion-proof crane, this wheeled rail structure can the various operating modes that run into of the material property of real reaction rail, requirement of explosion proof and explosion-proof crane.On project organization, there is rail groove 231 and boss take turns limit 211, boltedly to fix, and reinforced in radial direction by register pin, therefore this track structure is when simulating explosion-proof crane wheel gnawing rail, there are very high strength and stiffness, simultaneously because track seam crossing exists difference of height, the method that we are employed herein pad adjustment copper sheet 24 is simulated, select the adjustment copper sheet 24 of different-thickness, different differences in height can be set, the method is easy to operate, simply ingenious, and meets the requirement of explosion-proof occasion.
As the preferred embodiment of the present invention, centre wheel 21 is installed on central shaft, is arranged with bearing seat, is provided with temperature sensor in bearing seat between centre wheel 21 and central shaft.Temperature between energy Measurement accuracy explosion-proof crane Wheel Rail Contact tread.
As the preferred embodiment of the present invention, drive load part 3 is for being arranged on the some hydraulic loaded cylinders 31 outside casing 1, and hydraulic loaded cylinder 31 is other is also provided with oil motor 32.
As the preferred embodiment of the present invention, running part 4 comprises some conical gear be engaged with each other.
As the preferred embodiment of the present invention, the box-like body 11 that casing 1 comprises sealing and the gland bonnet 12 be positioned at above box-like body 11, be provided with hydraulically extensible bar 13 between box-like body 11 and gland bonnet 12, between box-like body 11 and gland bonnet 12, be also provided with case lid securing member 14.
In this casing 1 and on the outer wall of casing 1, some structural members are installed, and some structural members through casing 1 outer wall, between the structure that these pass casing 1 outer wall in installation process, the O-ring seal that can ensure casing 1 sealing property is installed all simultaneously.
Casing securing member 14 can ensure the sealing property between the box-like body 11 of composition casing 1 and gland bonnet 12, can be used for opening or closing gland bonnet 12, the gland bonnet 12 on casing 1 also can be made to stay open state simultaneously by hydraulic control expansion link 13.
As the preferred embodiment of the present invention, casing 1 is provided with observation window 6, the situation of spark in casing 1 in Observable operational process.
As the preferred embodiment of the present invention, in casing 1, be provided with fan 7, can ensure that gas can be uniformly distributed in the process of inflating in casing.
This rig for testing can simulate four kinds of main hazard operating modes in explosion-proof crane wheel track operational process really, belongs at home and researches and develops first.The present invention adopts the wheel track main part 2 of fluid motor-driven explosion-proof crane, and speed range of adjustment is large, can reach 0 ~ 200m/min, and adopt hydraulic cylinder to load, imposed load can reach 18t, also meets the request for utilization under explosion-proof environment simultaneously.The present invention adopts the form of rail wheel to replace straight track, can reduce space while true reflection operating mode, easily manufactured, and its structure is simple, technological requirement meets requirement of explosion proof, simple to operate.
This rig for testing is for evaluating explosion-proof crane wheel-rail friction explosion-proof performance, by the motion conditions under accurate simulation explosion-proof crane wheel track four kinds of operating modes, gnaw rail, excessively track seam crossing, original place skidding, locking slip respectively, accurately can measure the temperature of tread, in order to assess the explosion-proof performance of its wheel-rail friction, this rig for testing can be full of damp, simulation explosion-proof crane works existing in inflammable gas environment, then simulate the situation of the various operating mode of explosion-proof crane, after running a period of time, whether produce blast.
The concrete steps of simulation explosion-proof crane wheel track four kinds of operating modes are as follows:
Cross track seam crossing operating mode: it is make explosion-proof crane wheel and track seam crossing produce percussive action that simulation explosion-proof crane orbit gap impacts operating mode, difference in height between track seam crossing two tracks can be arranged within the specific limits flexibly, arranging seam crossing difference in height is that arc track 23 inside surface by arranging rail wheel outsourcing realizes, between arc track 23 inside surface and centre wheel 21, there is certain gap junction, outside, interorbital difference in height is realized by the mode of plug adjustment copper sheet 24 in this gap, difference in height is larger, the speed of explosion-proof crane wheel is faster, the possibility producing shock spark is larger.
It is as follows that this operating mode specific operation process simulated by this test unit, first wheel is loaded, make wheel near rail wheel, the size of loading force is wheel weight, and then fluid motor-driven rail wheel rotates, now, due to the effect of friction force, centre wheel 21 and annular wheel track 22 move simultaneously, and wheel can complete a gap impact at set intervals later, and number of shocks can need to select according to test.
Gnaw rail operating mode: gnaw rail and refer to that the cylindrical of explosion-proof crane centre wheel 21 contacts with the side of annular wheel track 22, relative motion, produce the situation of friction.Under this operating mode, friction can produce high temperature, even may produce friction spark.Simulate this operating mode, explosion-proof crane wheel position is constant, rail wheel moves left and right generation displacement, in this process with the contact friction of crane wheel inner edge, wherein rail wheel is moved left and right and is realized by hydraulic cylinder, the transverse force applied ensures to gnaw rail degree, gnaws rail degree simultaneously and is also measured by displacement, ensure that displacement is no more than 10mm.
Original place skidding operating mode: the unloading phase that this operating mode mainly occurring in explosion-proof crane, because instantaneous wheel staring torque is very big, create the operating mode of skidding, under skidding operating mode, raceway surface easily produces high temperature, when this operating mode simulated by this test unit, rail wheel and wheel rotate simultaneously, after reaching certain speed, rail wheel is stopped operating, wheel maintenance rotates, and the method needs the speed regulating wheel at once, the oil motor moment simultaneously selected is large, can stop the motion of rail wheel early, instantaneously.
Locking slip operating mode: the operating mode that locking is slided mainly appears at the explosion-proof crane brake stage, because brake torque is comparatively large or other reasons causes wheel stuck, the shifted forward that wheel does not rotate, wheel and track produce hard friction, the simulation of this operating mode is that detent is stopped tight wheel, does not allow it rotate, then fluid motor-driven rail wheel motion, adjustable track wheel speed size, can simulate the temperature of wheel track tread under different travelling speed.
Above four kinds of operating modes can be tested under containing the environment of damp, need to be full of inflammable gas in test unit main body, first proportioning is good as required for the composition of this gas, first test unit is vacuumized, then by air intake opening in casing, be charged into test unit, on case lid, have fan, ensure be uniformly distributed at gas replenishment process gas.Device temperature in the process of simulated condition is too high or produce spark, all will light damp and produce blast.
The simulation of various operating mode, explosion-proof crane wheel track tread all will produce temperature field, the present invention is first-class by temperature sensor, infrared photography, the thermo parameters method between explosion-proof crane wheel track tread can be measured, according to distribution and the maximum temperaturerise situation in temperature field, we can evaluate explosion-proof crane wheel-rail friction explosion-proof performance etc.
Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite without prejudice to spirit of the present invention, and these equivalent modification or replacement are all included in the application's claim limited range.
Claims (8)
1. one kind for evaluating the test unit of explosion-proof crane wheel-rail friction explosion-proof performance, it is characterized in that: the casing (1) comprising sealing and the wheel track main part (2) be installed in described casing (1), running part (4) is provided with in described casing (1), brake portion (5) is provided with outside described casing (1), described wheel track main part (2) comprises centre wheel (21) and is installed on the peripheral annular wheel track (22) of centre wheel (21), described casing (1) is also provided with the drive load part (3) be connected with wheel track main part (2) outward, described annular wheel track (22) comprises three sections of arc tracks (23) that capable assembling is ring-type, side to the center of circle on each described arc track (23) is provided with rail groove (231), the outer of described centre wheel (21) is arranged with boss wheel limit (211) that can embed rail groove (231).
2. the test unit for evaluating explosion-proof crane wheel-rail friction explosion-proof performance according to claim 1, is characterized in that: pad between the intrados side of described centre wheel (21) and each arc track (23) and be provided with some adjustment copper sheets (24).
3. the test unit for evaluating explosion-proof crane wheel-rail friction explosion-proof performance according to claim 1, it is characterized in that: described centre wheel (21) is installed on central shaft, be arranged with bearing seat between described centre wheel (21) and central shaft, in described bearing seat, temperature sensor be installed.
4. the test unit for evaluating explosion-proof crane wheel-rail friction explosion-proof performance according to claim 1, it is characterized in that: described drive load part (3) is for being arranged on casing (1) some hydraulic loaded cylinders (31) outward, and described hydraulic loaded cylinder (31) is other is also provided with oil motor (32).
5. the test unit for evaluating explosion-proof crane wheel-rail friction explosion-proof performance according to claim 1, is characterized in that: described running part (4) comprises some conical gear be engaged with each other.
6. the test unit for evaluating explosion-proof crane wheel-rail friction explosion-proof performance according to claim 1, it is characterized in that: described casing (1) comprises the box-like body (11) of sealing and is positioned at the gland bonnet (12) of box-like body (11) top, be provided with hydraulically extensible bar (13) between described box-like body (11) and gland bonnet (12), between described box-like body (11) and gland bonnet (12), be also provided with case lid securing member (14).
7. the test unit for evaluating explosion-proof crane wheel-rail friction explosion-proof performance according to claim 1, is characterized in that: described casing (1) is provided with observation window (6).
8. the test unit for evaluating explosion-proof crane wheel-rail friction explosion-proof performance according to claim 1, is characterized in that: be provided with fan (7) in described casing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310072273.2A CN103175681B (en) | 2013-03-06 | 2013-03-06 | A kind of test unit for evaluating explosion-proof crane wheel-rail friction explosion-proof performance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310072273.2A CN103175681B (en) | 2013-03-06 | 2013-03-06 | A kind of test unit for evaluating explosion-proof crane wheel-rail friction explosion-proof performance |
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| CN103175681A CN103175681A (en) | 2013-06-26 |
| CN103175681B true CN103175681B (en) | 2015-12-02 |
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| CN201310072273.2A Expired - Fee Related CN103175681B (en) | 2013-03-06 | 2013-03-06 | A kind of test unit for evaluating explosion-proof crane wheel-rail friction explosion-proof performance |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105236271B (en) * | 2015-11-09 | 2017-03-22 | 江苏省特种设备安全监督检验研究院 | Comprehensive laboratory examination device for anti-wind brake product of crane |
| CN109781514B (en) * | 2019-04-02 | 2024-03-22 | 山西省检验检测中心(山西省标准计量技术研究院) | Explosion-proof test tank |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1435264A (en) * | 1917-01-26 | 1922-11-14 | Westinghouse Electric & Mfg Co | Testing apparatus for explosion-proof devices |
| CH654919A5 (en) * | 1980-10-06 | 1986-03-14 | Wernigerode Getriebewerk Veb | UNIVERSAL WRITING DEVICE. |
| SU1219937A1 (en) * | 1984-03-30 | 1986-03-23 | Всесоюзный научно-исследовательский и проектно-конструкторский институт подъемно-транспортного машиностроения | Bed for testing crane running wheels |
| SU1320691A1 (en) * | 1985-12-25 | 1987-06-30 | Всесоюзный научно-исследовательский и проектно-конструкторский институт подъемно-транспортного машиностроения | Stand for testing crane running gear |
| CN201825689U (en) * | 2010-05-06 | 2011-05-11 | 新乡市起重设备厂有限责任公司 | Explosion-proof belt type braking device for winding drum |
| CN102519724A (en) * | 2011-12-05 | 2012-06-27 | 三一重机有限公司 | Wobble bearing type friction test device and method |
| CN203148661U (en) * | 2013-03-06 | 2013-08-21 | 广州市特种机电设备检测研究院 | Testing apparatus used for evaluating explosion-proof performance of explosion-proof crane wheel track friction |
-
2013
- 2013-03-06 CN CN201310072273.2A patent/CN103175681B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1435264A (en) * | 1917-01-26 | 1922-11-14 | Westinghouse Electric & Mfg Co | Testing apparatus for explosion-proof devices |
| CH654919A5 (en) * | 1980-10-06 | 1986-03-14 | Wernigerode Getriebewerk Veb | UNIVERSAL WRITING DEVICE. |
| SU1219937A1 (en) * | 1984-03-30 | 1986-03-23 | Всесоюзный научно-исследовательский и проектно-конструкторский институт подъемно-транспортного машиностроения | Bed for testing crane running wheels |
| SU1320691A1 (en) * | 1985-12-25 | 1987-06-30 | Всесоюзный научно-исследовательский и проектно-конструкторский институт подъемно-транспортного машиностроения | Stand for testing crane running gear |
| CN201825689U (en) * | 2010-05-06 | 2011-05-11 | 新乡市起重设备厂有限责任公司 | Explosion-proof belt type braking device for winding drum |
| CN102519724A (en) * | 2011-12-05 | 2012-06-27 | 三一重机有限公司 | Wobble bearing type friction test device and method |
| CN203148661U (en) * | 2013-03-06 | 2013-08-21 | 广州市特种机电设备检测研究院 | Testing apparatus used for evaluating explosion-proof performance of explosion-proof crane wheel track friction |
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Address after: The Yuexiu District road Guangzhou city Guangdong province 510180 No. 65 building 702 Lurong Applicant after: GUANGZHOU ACADEMY OF SPECIAL EQUIPMENT INSPECTION & TESTING Address before: The Yuexiu District road Guangzhou city Guangdong province 510180 No. 65 building 702 Lurong Applicant before: Guangzhou Academy of Special Equipment Inspection & Testing |
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