CN103175776A - Test system for aggregate friction coefficient of truck escape ramp - Google Patents
Test system for aggregate friction coefficient of truck escape ramp Download PDFInfo
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- CN103175776A CN103175776A CN2013100804291A CN201310080429A CN103175776A CN 103175776 A CN103175776 A CN 103175776A CN 2013100804291 A CN2013100804291 A CN 2013100804291A CN 201310080429 A CN201310080429 A CN 201310080429A CN 103175776 A CN103175776 A CN 103175776A
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Abstract
The invention relates to a test system for the aggregate friction coefficient of a truck escape ramp. The test system comprises an aggregate bogie system, an accelerating system, a guide system and a one-wheel system, wherein the aggregate bogie system is arranged on the guide system, and the aggregate bogie system is connected with the accelerating system; the one-wheel system is arranged at one side of the guide system; the aggregate bogie system comprises an aggregate trough; the left end of the aggregate trough is provided with a guide block; the bottom of the guide block is provided with a collision block; the right end of the aggregate trough is provided with a towing hook; the aggregate trough is filled with aggregates; and the bottom of the aggregate trough is provided with wheels. The test system disclosed by the invention can be used for fast, easily and conveniently organizing the experiment, testing the experiment contents with different quality and speed parameters, has the advantages of small occupied space, easiness and convenience in installation, operation and maintenance of the test system and can be used for effectively testing the rolling friction coefficient between the aggregates and the wheels.
Description
Technical field
The present invention relates to a kind of emergency lane gather materials PVvalue testing system.
Background technology
The urgent danger prevention track is as an ingredient of road, in American-European widespread use for many years.Its application practice proof has great importance to improving traffic safety and reducing the traffic hazard economic loss.The China that is arranged on of emergency lane still is in the starting stage, and relevant design still lacks special experience and standard at present, especially uses the research of the friction factor that gathers materials also very immature to emergency lane, lacks the related data of the friction factor that gathers materials.Yet the friction factor that gathers materials in emergency lane is to concern the important parameter that can emergency lane reach desirable hedging effect, is the emphasis Consideration of answering in the emergency lane design process.At present the research of the friction factor that gathers materials is still far from perfect, gather materials and wheel between coefficient of rolling friction determine to obtain by the real vehicle full-scale experiment.Carry out such research not only experimental period long, more expend a large amount of manpower and materials, make R﹠D costs greatly improve.Therefore, a kind of novel emergency lane of exploitation gather materials the PVvalue testing system to gather materials and wheel between coefficient of rolling friction study and just seem very important.
Summary of the invention
The purpose of this invention is to provide a kind of emergency lane gather materials PVvalue testing system, to emergency lane gather materials and wheel between coefficient of rolling friction carry out testing research; Required place is little, equipment needed thereby is few, easy for installation, adjustable weight and speed are tested the different friction factor that gather materials under many kinds of parameters.
The objective of the invention is to be achieved through the following technical solutions:
gather materials PVvalue testing system of a kind of emergency lane, comprise the cart system that gathers materials, accelerating system, guidance system and single wheel system, the described cart system that gathers materials is arranged on guidance system, the cart system that gathers materials is connected with accelerating system, the single wheel system is arranged at a side of guidance system, the described cart system that gathers materials comprises material collecting tank, this material collecting tank is the dolly vehicle body that gathers materials, the left end of material collecting tank is provided with bootstrap block, the bottom of bootstrap block is provided with Impactor, the length of Impactor is greater than the length of bootstrap block, the right-hand member of material collecting tank is provided with draw hook, be filled with in material collecting tank and gather materials, the bottom of material collecting tank is provided with wheel, described material collecting tank is square or polygon, and the cross section of bootstrap block is right-angle triangle, and the top of this right-angle triangle and the coboundary of material collecting tank are positioned at same plane.
Described guidance system comprises base plate, and end face or the bottom surface of base plate are provided with guide rail.
Described single wheel system comprises two bases, base is provided with telescopic support, be provided with guide bearing in telescopic support, be provided with rolling bearing in guide bearing, be provided with axletree between two rolling bearings, axletree is provided with real vehicle foot cun wheel, and the below of real vehicle foot cun wheel is provided with the kinetic energy conversion block, the kinetic energy conversion block is made by wooden unit or derby, and described telescopic support is provided with ballast box.
Described accelerating system comprises concrete slope, fixes described guidance system on the slope of concrete slope, and the top of concrete slope is provided with lifting gear, and lifting gear is connected with draw hook by haulage cable one.
Described accelerating system comprises fixed mechanism one, fixed mechanism one is arranged at a side of guidance system, fixed mechanism one is connected with draw hook by haulage cable two, and between the rear end of material collecting tank and fixed mechanism one, against acceleration spring is arranged, acceleration spring is fixed on fixed mechanism one.
Described accelerating system and guidance system are arranged at respectively the both sides of single wheel system, and accelerating system comprises fixed mechanism two, and fixed mechanism two is connected with material collecting tank by haulage cable three.
Beneficial effect of the present invention is: the tissue experiment is simple and convenient fast, can test the experiment content of different quality, speed parameter, and it takes up room little, test macro is installed, operation, safeguard simple and convenient, be Validity Test gather materials and wheel between the test macro of coefficient of rolling friction.
Description of drawings
The below is described in further detail the present invention with reference to the accompanying drawings.
Fig. 1 is the described emergency lane of the embodiment of the present invention structural representation of dolly of gathering materials in the PVvalue testing system that gathers materials;
Fig. 2 is the gather materials structural representation of accelerating system in the PVvalue testing system of the described emergency lane of the embodiment of the present invention;
Fig. 3 is the vertical view of Fig. 2;
Fig. 4 is the described emergency lane of the embodiment of the present invention one of the structural representation of guidance system in the PVvalue testing system that gathers materials;
Fig. 5 is the vertical view of Fig. 4;
Fig. 6 be the described emergency lane of the embodiment of the present invention gather materials guidance system in the PVvalue testing system structural representation two;
Fig. 7 is the upward view of Fig. 6;
Fig. 8 is the gather materials structural representation of the system of single wheel in the PVvalue testing system of the described emergency lane of the embodiment of the present invention;
Fig. 9 is the vertical view of Fig. 8;
Figure 10 is the side view of Fig. 8;
Figure 11 is the described emergency lane of the embodiment of the present invention one of the practical state reference map of PVvalue testing system that gathers materials;
Figure 12 is the described emergency lane of the embodiment of the present invention one of the practical state reference map of PVvalue testing system that gathers materials;
Figure 13 is the described emergency lane of the embodiment of the present invention one of the practical state reference map of PVvalue testing system that gathers materials.
In figure:
1, the cart system that gathers materials; 11, material collecting tank; 12, bootstrap block; 13, draw hook; 14, gather materials; 15, wheel; 16, Impactor; 2, accelerating system; 21, concrete slope; 22, lifting gear; 23, haulage cable one; 24, fixed mechanism one; 25, haulage cable two; 26, acceleration spring; 27, fixed mechanism two; 28, haulage cable three; 3, guidance system; 31, base plate; 32, guide rail; 4, single wheel system; 41, base; 42, telescopic support; 43, guide bearing; 44, rolling bearing; 45, axletree; 46, real vehicle foot cun wheel; 47, kinetic energy conversion block; 48, ballast box.
Embodiment
as Fig. 1, shown in 11, gather materials PVvalue testing system of the described a kind of emergency lane of the embodiment of the present invention, comprise the cart system 1 that gathers materials, accelerating system 2, guidance system 3 and single wheel system 4, the described cart system 1 that gathers materials is arranged on guidance system 3, the cart system 1 that gathers materials is connected with accelerating system 2, single wheel system 4 is arranged at a side of guidance system 3, the described cart system 1 that gathers materials comprises material collecting tank 11, this material collecting tank 11 is the dolly vehicle body that gathers materials, the left end of material collecting tank 11 is provided with bootstrap block 12, the bottom of bootstrap block 12 is provided with Impactor 16, the length of Impactor 16 is greater than the length of bootstrap block 12, the right-hand member of material collecting tank 11 is provided with draw hook 13, be filled with in material collecting tank 11 and gather materials 14, the bottom of material collecting tank 11 is provided with wheel 15.
As shown in Fig. 2-3, described accelerating system 2 comprises concrete slope 21, fix described guidance system 3 on the slope of concrete slope 21, the top of concrete slope 21 is provided with lifting gear 22, and lifting gear 22 is connected with draw hook 13 by haulage cable 1.
As shown in Fig. 4-7, described guidance system 3 comprises base plate 31, and the end face of base plate 31 or bottom surface are provided with guide rail 32.
As shown in Fig. 8-10, described single wheel system 4 comprises two bases 41, base 41 is provided with telescopic support 42, be provided with guide bearing 43 in telescopic support 42, be provided with in guide bearing 43 between 44, two rolling bearings 44 of rolling bearing and be provided with axletree 45, axletree 45 is provided with real vehicle foot cun wheel 46, the below of real vehicle foot cun wheel 46 is provided with kinetic energy conversion block 47, and described telescopic support 42 is provided with ballast box 48.
During work, at first single wheel system 4 middle sleeve cribbings 42 are installed, ballast box 48, rolling bearing 44, guide bearing 43 are placed in telescopic support 42, regulate counterweight installation car wheel shaft 45 and real vehicle foot cun wheel 46; Build concrete slope 21, the base plate 31 of guide track system 3 is fixing on the slope, lifting gear 22 is fixed to the upper end, slope; To gather materials, draw hook 13 is connected with haulage cable 1 in accelerating system 2 in cart system 1, and the other end of haulage cable 1 is fixed on lifting gear 22, starts lifting gear 22 and will gather materials cart system 1 traction to the top, slope; Discharging draw hook 13 makes the cart system 1 that gathers materials travel at the kinetic energy conversion block 47 under the slope under the guiding of guidance system 3, on dolly, Impactor 16 bumps against with certain speed and kinetic energy conversion block 47, kinetic energy conversion block 47 travels forward, and then drive real vehicle foot cun wheel 46 rotations, the cart system 1 of gathering materials continues to overtake, and real vehicle foot cun wheel 46 contact guidance pieces 12 sail material collecting tank 11 into and 14 contact with gathering materials; After real vehicle foot cun wheel 46 and the cart system 1 that gathers materials are static, enter the rotating speed of the relative velocity that gathers materials, real vehicle foot cun wheel 46 and enter the distance of gathering materials and travelling in 14 by recording real vehicle foot cun wheel 46, pass through formula:
Can calculate 14 the coefficient of frictional resistance of gathering materials; Wherein M is the gross mass of cart system 1 of gathering materials, v is the speed of cart system 1 and single wheel system 4 Contacts of gathering materials, m is the gross mass of ballast box 48 and real vehicle foot cun wheel 46 in single wheel system 4, axletree 45, rolling bearing 4, guide bearing 43, ignore wheel 15 and ground friction coefficient in the cart system 1 that gathers materials herein, L is real vehicle foot cun wheel 46 at the range ability in 14 that gathers materials of the cart system 1 that gathers materials, f
MaterialBe tested 14 the friction factor of gathering materials, cun wheel 46 enters 14 height that rise that gather materials thereby h is the real vehicle foot.
In the above-mentioned cart system 1 that gathers materials, the cross section of material collecting tank 11 is square or polygon, and the cross section that its bootstrap block 12 is is right-angle triangle, and the upper end, inclined-plane is concordant with material collecting tank 11 coboundarys, and the lower end is connected with Impactor phase 16.In above-described embodiment, accelerating system is ramp type, and the accelerating system embodiment also can be ejection type or towed.Wherein, ejection type as shown in figure 12, described accelerating system 2 comprises fixed mechanism 1, fixed mechanism 1 is arranged at a side of guidance system 3, fixed mechanism 1 is connected with draw hook 13 by haulage cable 2 25, between the rear end of material collecting tank 11 and fixed mechanism 1, against acceleration spring 26 is arranged, acceleration spring 26 is fixed on fixed mechanism 1; Draw formula as shown in figure 13, described accelerating system 2 and guidance system 3 are arranged at respectively the both sides of single wheel system 4, accelerating system 2 comprises fixed mechanism 2 27, fixed mechanism 2 27 is connected with material collecting tank 11 by haulage cable 3 28, the cart system 1 that gathers materials this moment is provided with an end of draw hook 13 and fixes by the right-hand member of rope and guidance system 3, during use, disconnects this rope, gather materials cart system 1 under the effect of haulage cable 3 28, to 4 accelerated motions of single wheel system.Above-mentioned guidance system 3 is guide rail or guide groove pattern, and guide rail or guide groove height are lower than the cart system minimum altitude.Above-mentioned kinetic energy conversion block 47 can be comprised of wooden unit or derby; Kinetic energy conversion block 47 also can be momentum conversion dolly.
The present invention is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present invention; no matter but do any variation on its shape or structure; every have identical with a application or akin technical scheme, within all dropping on protection scope of the present invention.
Claims (10)
1. an emergency lane gather materials PVvalue testing system, comprise the cart system that gathers materials (1), accelerating system (2), guidance system (3) and single wheel system (4), it is characterized in that: the described cart system that gathers materials (1) is arranged on guidance system (3), the cart system (1) that gathers materials is connected with accelerating system (2), single wheel system (4) is arranged at a side of guidance system (3), the described cart system that gathers materials (1) comprises material collecting tank (11), the left end of material collecting tank (11) is provided with bootstrap block (12), the bottom of bootstrap block (12) is provided with Impactor (16), the length of Impactor (16) is greater than the length of bootstrap block (12), the right-hand member of material collecting tank (11) is provided with draw hook (13), material collecting tank is filled with gather materials (14) in (11), the bottom of material collecting tank (11) is provided with wheel (15).
2. emergency lane according to claim 1 gather materials PVvalue testing system, it is characterized in that: described guidance system (3) comprises base plate (31), the end face of base plate (31) or bottom surface are provided with guide rail (32).
3. emergency lane according to claim 2 gather materials PVvalue testing system, it is characterized in that: described single wheel system (4) comprises two bases (41), base (41) is provided with telescopic support (42), be provided with guide bearing (43) in telescopic support (42), be provided with rolling bearing (44) in guide bearing (43), be provided with axletree (45) between two rolling bearings (44), axletree (45) is provided with real vehicle foot cun wheel (46), and the below of real vehicle foot cun wheel (46) is provided with kinetic energy conversion block (47).
4. emergency lane according to claim 3 gather materials PVvalue testing system, it is characterized in that: described telescopic support (42) is provided with ballast box (48).
5. emergency lane according to claim 4 gather materials PVvalue testing system, it is characterized in that: described accelerating system (2) comprises concrete slope (21), fix described guidance system (3) on the slope of concrete slope (21), the top of concrete slope (21) is provided with lifting gear (22), and lifting gear (22) is connected with draw hook (13) by haulage cable one (23).
6. emergency lane according to claim 4 gather materials PVvalue testing system, it is characterized in that: described accelerating system (2) comprises fixed mechanism one (24), fixed mechanism one (24) is arranged at a side of guidance system (3), fixed mechanism one (24) is connected with draw hook (13) by haulage cable two (25), between the rear end of material collecting tank (11) and fixed mechanism one (24), against acceleration spring (26) is arranged, acceleration spring (26) is fixed on fixed mechanism one (24).
7. emergency lane according to claim 4 gather materials PVvalue testing system, it is characterized in that: described accelerating system (2) and guidance system (3) are arranged at respectively the both sides of single wheel system (4), accelerating system (2) comprises fixed mechanism two (27), and fixed mechanism two (27) is connected with material collecting tank (11) by haulage cable three (28).
8. according to claim 1-7 described emergency lanes of any one gather materials PVvalue testing system, it is characterized in that: described material collecting tank (11) is square or polygon.
9. according to claim 1-7 described emergency lanes of any one gather materials PVvalue testing system, it is characterized in that: the cross section of described bootstrap block (12) is right-angle triangle, the coboundary of the top of this right-angle triangle and material collecting tank (11) is positioned at same plane.
10. according to claim 1-7 described emergency lanes of any one gather materials PVvalue testing system, it is characterized in that: described kinetic energy conversion block (47) is made by wooden unit or derby.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310080429.1A CN103175776B (en) | 2013-03-14 | 2013-03-14 | Test system for aggregate friction coefficient of truck escape ramp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310080429.1A CN103175776B (en) | 2013-03-14 | 2013-03-14 | Test system for aggregate friction coefficient of truck escape ramp |
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| Publication Number | Publication Date |
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| CN103175776A true CN103175776A (en) | 2013-06-26 |
| CN103175776B CN103175776B (en) | 2015-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310080429.1A Active CN103175776B (en) | 2013-03-14 | 2013-03-14 | Test system for aggregate friction coefficient of truck escape ramp |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109507105A (en) * | 2018-11-16 | 2019-03-22 | 长安大学 | A kind of road antiskid Performance Test System and its test method |
| CN116718542A (en) * | 2023-08-08 | 2023-09-08 | 中国建筑科学研究院有限公司 | Stair railing parameter testing device and detection method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109507105A (en) * | 2018-11-16 | 2019-03-22 | 长安大学 | A kind of road antiskid Performance Test System and its test method |
| CN109507105B (en) * | 2018-11-16 | 2021-06-15 | 长安大学 | Road anti-skid performance test system and test method thereof |
| CN116718542A (en) * | 2023-08-08 | 2023-09-08 | 中国建筑科学研究院有限公司 | Stair railing parameter testing device and detection method |
| CN116718542B (en) * | 2023-08-08 | 2023-10-10 | 中国建筑科学研究院有限公司 | Stair railing parameter testing device and detection method |
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| CN103175776B (en) | 2015-03-11 |
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