CN103452019B - The testing arrangement of steel rail fastener longitudinal resistance and method - Google Patents
The testing arrangement of steel rail fastener longitudinal resistance and method Download PDFInfo
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Abstract
The present invention relates to orbit construction field, particularly a kind of testing arrangement of steel rail fastener longitudinal resistance and method.Wherein, the testing arrangement of this steel rail fastener longitudinal resistance, comprises horizontal force application apparatus, vertical force application apparatus, displacement measurement apparatus and fastening devices; Horizontal force application apparatus is used for applying horizontal thrust to one end of rail; Vertical force application apparatus is used for applying vertical pressure to rail; Displacement measurement apparatus is arranged for measuring the horizontal movement that rail produces when having under horizontal thrust and vertical pressure.The testing arrangement of steel rail fastener longitudinal resistance of the present invention and method, can well simulate rail at loading status (such as, the train of load) the actual longitudinal resistance value of rail fastening, can react the longitudinal resistance of fastener under rail has lotus state really, its accuracy is high.<pb pnum="1" />
Description
Technical field
The present invention relates to orbit construction field, in particular to a kind of testing arrangement and method of steel rail fastener longitudinal resistance.
Background technology
The longitudinal resistance of rail fastening is the important indicator evaluating rail fastening performance quality.In the related, the method for common test steel rail fastener longitudinal resistance is all test when rail zero load, after namely first being fixed by rail fastening by rail, applies external force, and measure the horizontal movement of rail in one end of rail.Then, the longitudinal resistance of rail fastening is obtained by the relation between conversion external force and the horizontal movement of rail.
But in the related, because rail does not have load, and rail is in the process of work, all carries train pressure; Therefore, the longitudinal resistance of the rail fastening recorded in correlation technique can not react the longitudinal resistance of rail fastening under rail has loading status really, and its accuracy is not high.
Summary of the invention
The object of the present invention is to provide a kind of testing arrangement and method of steel rail fastener longitudinal resistance, to solve the above problems.
The testing arrangement of the steel rail fastener longitudinal resistance provided in embodiments of the invention comprises horizontal force application apparatus, vertical force application apparatus, displacement measurement apparatus and fastening devices; Described horizontal force application apparatus is used for applying horizontal thrust to one end of rail; Described vertical force application apparatus is used for applying vertical pressure to rail; Described vertical force application apparatus comprises the first hydraulic jack, the first transverse slat, the second transverse slat; Described first transverse slat is fixedly installed in described fastening devices, and described second transverse slat is slidably arranged in described fastening devices; And described first transverse slat and described second transverse slat are arranged from top to bottom; Described first hydraulic jack is arranged between described first transverse slat with described second transverse slat and also contacts with described first transverse slat, the second transverse slat respectively; When described second transverse slat slides up and down under the effect of described first hydraulic jack, the space for installing rail can be formed; The horizontal movement that described displacement measurement apparatus produces when having under horizontal thrust and vertical pressure for measuring rail.
Additionally provide the method utilizing testing arrangement to test rail longitudinal resistance in embodiments of the invention, comprise the following steps: use vertical force application apparatus to apply vertical pressure to the first predetermined value to rail; Horizontal force application apparatus is used to be continuously applied horizontal pressure force to the second predetermined value at a predetermined velocity to one end of rail; The horizontal movement that under utilize displacement measurement apparatus to test concrete pressure that rail applies at horizontal force application apparatus, described rail occurs; Record the described horizontal pressure force of horizontal force application apparatus applying and the horizontal movement of rail generation, when described horizontal pressure force keeps constant, and when described horizontal movement continues to increase, obtain longitudinal resistance.
The testing arrangement of the steel rail fastener longitudinal resistance of the above embodiment of the present invention and method, when the longitudinal resistance of test rail fastening, after rail is fixing, second transverse slat under the effect of the first hydraulic jack with the top contact of rail, and be fixedly connected with fastening devices due to the first transverse slat, therefore, the first hydraulic jack can by realizing applying the effect of vertical pressure to rail with slide the second transverse slat of arranging of fastening devices; Horizontal force application apparatus can provide the horizontal thrust to rail, the relation of the horizontal movement occurred by size and the rail of thrust, can obtain the longitudinal resistance value of rail fastening when there being vertical force application apparatus to apply vertical pressure; The testing arrangement of this steel rail fastener longitudinal resistance of the embodiment of the present invention, tests the longitudinal resistance of rail fastening by vertical force application apparatus to rail after applying longitudinal vertical pressure.Therefore, can well simulate rail at loading status (such as, the train of load) the actual longitudinal resistance value of rail fastening, compared with the longitudinal resistance of the rail fastening measured under the state not having load with traditional rail, can react the longitudinal resistance of fastener under rail has lotus state really, its accuracy is high.
Accompanying drawing explanation
Fig. 1 shows the schematic diagram of the testing arrangement of the steel rail fastener longitudinal resistance that the embodiment of the present invention one provides;
Fig. 2 shows the schematic diagram of the testing arrangement of the steel rail fastener longitudinal resistance that the embodiment of the present invention two provides.
Detailed description of the invention
Also by reference to the accompanying drawings the present invention is described in further detail below by specific embodiment.
Please refer to Fig. 1, in embodiments of the invention, provide a kind of testing arrangement of steel rail fastener longitudinal resistance, comprise horizontal force application apparatus, vertical force application apparatus, displacement measurement apparatus 105 and fastening devices 104; Described horizontal force application apparatus is used for applying horizontal thrust to one end of rail; Described vertical force application apparatus is used for applying vertical pressure to rail; Described vertical force application apparatus comprises the first hydraulic jack 101, first transverse slat 102, second transverse slat 103; Described first transverse slat 102 is fixedly installed in described fastening devices 104, and described second transverse slat 103 is slidably arranged in described fastening devices 104; And described first transverse slat 102 is arranged from top to bottom with described second transverse slat 103; Described first hydraulic jack 101 is arranged between described first transverse slat 102 with described second transverse slat 103 and also contacts with described first transverse slat 102, second transverse slat 103 respectively; When described second transverse slat 103 slides up and down under the effect of described first hydraulic jack 101, the space for installing rail can be formed; The horizontal movement that described displacement measurement apparatus 105 produces when having under horizontal thrust and vertical pressure for measuring rail.
The testing arrangement of a kind of steel rail fastener longitudinal resistance provided of the above embodiment of the present invention, when the longitudinal resistance of test rail fastening, after rail is fixing, second transverse slat 103 under the effect of the first hydraulic jack 101 with the top contact of rail, and be fixedly connected with fastening devices 104 due to the first transverse slat 102, therefore, the first hydraulic jack 101 can by realizing applying the effect of vertical pressure to rail with slide the second transverse slat 103 of arranging of fastening devices 104; Horizontal force application apparatus can provide the horizontal thrust to rail, the relation of the horizontal movement occurred by size and the rail of thrust, can obtain the longitudinal resistance value of rail fastening when there being vertical force application apparatus to apply vertical pressure; The testing arrangement of this steel rail fastener longitudinal resistance of the embodiment of the present invention, tests the longitudinal resistance of rail fastening by vertical force application apparatus to rail after applying longitudinal vertical pressure.Therefore, can well simulate rail at loading status (such as, the train of load) the actual longitudinal resistance value of rail fastening, compared with the longitudinal resistance of the rail fastening measured under the state not having load with traditional rail, can react the longitudinal resistance of fastener under rail has lotus state really, its accuracy is high.
In order to the testing arrangement of the steel rail fastener longitudinal resistance making the embodiment of the present invention one is better applied, more effectively be applied in the longitudinal resistance test of fastener, the present invention also provides embodiment two on the basis of above-described embodiment one, embodiment two is further restriction and increase that the basis to embodiment one is made, is now described in detail and explains:
Please refer to Fig. 2, in the present embodiment, in order to make the longitudinal resistance of rail fastening convenient operation in test process, improve test accuracy, preferably, also comprise the gripper shoe 201 for fixing rail and baffle plate 202, described horizontal force application apparatus is the second hydraulic jack; Described baffle plate 202 is longitudinally arranged in described gripper shoe 201, and one end and the described baffle plate 202 of described second hydraulic jack offset; Like this, relative fixing between gripper shoe 201 with baffle plate 202, and rail is also fixed in gripper shoe 201, one end and the baffle plate 202 of the second hydraulic jack offset, the ends contact of the other end and rail, can well realize applying horizontal thrust to the rail be fixed on by fastener in gripper shoe 201.
In addition, optionally, in the process of actual measurement, in order to make rail be easy to fixing, backing plate can also be added between rail and gripper shoe 201, backing plate, relatively fixing between gripper shoe 201 and rail, in the process of repeated measurement, backing plate can be changed according to the damage degree of backing plate.
Further, in the present embodiment, the effect of fastening devices 104 is to be fixed by vertical force application apparatus, and in order to reach better fixed effect, optionally, described fastening devices 104 comprises the first fixed head 203 and the second fixed head 204; Described first fixed head 203 and described second fixed head 204 are symmetricly set in described gripper shoe 201, and described first fixed head 203 is all vertical with described baffle plate 202 with described second fixed head 204; And the described first fixed head 203 plate face relative with described second fixed head 204 is provided with longitudinally protruding 205; Described first transverse slat 102 is fixedly installed on described first fixed head 203 and described second fixed head 204 one end away from described gripper shoe 201; Described second transverse slat 103 is provided with draw-in groove, and described second transverse slat 103 is slidably connected with described first fixed head 203 and described second fixed head 204 respectively by described draw-in groove and described longitudinally projection 205; Like this, first transverse slat 102 and two fixed heads are fixedly installed, second transverse slat 103 can under the effect of the first hydraulic jack 101, move up and down under being realized by draw-in groove and longitudinal cooperation of protruding 205, rail is then between the second transverse slat 103 and gripper shoe 201, and contact with the second transverse slat 103, the vertical pressure that the first hydraulic jack 101 applies can be acted on rail by the second transverse slat 103.First transverse slat 102 and the second transverse slat 103 can well be fixed by symmetrically arranged first fixed head 203 and the second fixed head 204, and one end of the second hydraulic jack is against on baffle plate 202, and the end thereof contacts of the other end and rail is also continuously applied horizontal pressure force.
In order to ensure the safety in test process, preferably, described vertical force application apparatus also comprises at least two roller bearings 208; Described first fixed head 203 and described second fixed head 204 are respectively arranged with at least two the first through holes 206 and at least two the second through holes 207 at its thickness direction, and the hole heart of at least two described first through holes 206 is equal to the distance of described gripper shoe 201, and equal the distance of the hole heart to described gripper shoe 201 of at least two described second through holes 207; At least two described roller bearings 208 be arranged in parallel, and its two ends are successively through described first through hole 206 and described second through hole 207; Like this, second transverse slat 103 is carried on a shoulder pole at least two roller bearings 208, on the one hand, improve the stability of the second transverse slat 103, on the other hand, the pressure suffered by the second transverse slat 103 is delivered on rail by roller bearing 208, and roller bearing 208 plays dividing potential drop and simulates the state that train advances, therefore, the accuracy of test result can be improved.
Preferably, described displacement measurement apparatus 105 is dial gage; Described dial gage is at least two, can measure the micro-displacement that rail occurs under horizontal thrust accurately, and in order to measure displacement accurately, dial gage is at least two by dial gage, and it can be separately positioned on the rail head of rail, the web of the rail and flange of rail portion; In addition, in the present embodiment, optionally, the horizontal movement that rail occurs directly can be measured by displacement transducer.
In the present embodiment, in order to improve the stability of the second transverse slat 103 in sliding process, preferably, described draw-in groove and described protruding 205 be longitudinally multiple, and all corresponding one described longitudinally protruding 205 and be slidably matched with described longitudinally projection 205 of each described draw-in groove.
Bearing the state of train of advancing in order to better simulate rail, in the present embodiment, further, also comprising multiple bearing 209; Each described roller bearing 208 is provided with at least two described bearings 209, and for the rail head of rail is blocked; Second hydraulic jack withstands in the process of persistent pressure, and roller bearing 208 and bearing 209 are easy to and rail generation relative sliding.Preferably, coating lubricating oil is wanted in bearing 209 and the contact site of roller bearing 208 and the contact site of roller bearing 208 and rail.
Further, in the process of test, be fixed in gripper shoe 201 in order to what make that the first fixed head 203 and the second fixed head 204 can be firm, preferably, also comprise the first reinforcing rib 210 and the second reinforcing rib 211; Described first reinforcing rib 210 is arranged between described first fixed head 203 and described gripper shoe 201, described second reinforcing rib 211 is arranged between described second fixed head 204 and described gripper shoe 201, and the first reinforcing rib 210 and the second reinforcing rib 211 can also be set to multiple.
In addition, in the present embodiment, multiple support batten is also comprised; Multiple described support battens are arranged on the bottom of described gripper shoe 201, and described gripper shoe 201 is propped up, and multiple described support batten is parallel to each other, supports batten 212 and whole gripper shoe 201 is supported, and then make convenient operation more in the process of testing.
The embodiment of the present invention three additionally provides a kind of method of testing steel rail fastener longitudinal resistance, specifically comprises the following steps:
Step 101: use vertical force application apparatus to apply vertical pressure to the first predetermined value to rail;
Step 102: the horizontal force application apparatus of use is continuously applied horizontal pressure force to the second predetermined value at a predetermined velocity to one end of rail;
Step 103: the horizontal movement that under utilize displacement measurement apparatus 105 to test concrete pressure that rail applies at horizontal force application apparatus, described rail occurs;
Step 104: record the described horizontal pressure force of horizontal force application apparatus applying and the horizontal movement of rail generation, when described horizontal pressure force keeps constant, and when described horizontal movement continues to increase, obtain longitudinal resistance.
Preferably, in above-mentioned steps, wherein, described first predetermined value is 80kN or 110kN; Described predetermined speed is 5kN/min-15kN/min; Described second predetermined value is 2.2kN-2.8kN.
In the above-described embodiments, optionally, rail fastening can comprise V-type fastener (comprising small-resistant fastener), WJ-7, WJ-8 series etc.; Wherein, V-type fastener can adopt LWS series matching fastener, and spring model is X3, and apron block model is C5-4, and railway rail pad model is RP5-08; WJ-7 type fastener comprises normal resistance and slight drag two type; The normal resistance fastener of WJ-8 type adopts rubber mat plate, W1 type spring.
Simultaneously, it is to be noted, in an embodiment of the present invention, carry out in the process of longitudinal resistance test to various different types of rail fastening, multiple rail fastening of the same type can be selected to repeat experiment, and then obtain average longitudinal resistance (kN) and average length travel (mm).
1,6 cover V-type small-resistant fasteners are tested:
1), when rail does not apply vertical pressure by vertical force application apparatus, the longitudinal resistance result of rail V-type small-resistant fastener is see table 1:
Rail V-type small-resistant fastener longitudinal resistance experimental data when table 1 is unloaded
2), when rail applies 80kN vertical pressure by vertical force application apparatus, the longitudinal resistance result of rail V-type small-resistant fastener is see table 2:
Longitudinal resistance result of the test during table 2 V-type small-resistant fastener load 80kN vertical pressure
3), when rail applies 110kN vertical pressure by vertical force application apparatus, the longitudinal resistance result of rail V-type small-resistant fastener is see table 3:
Longitudinal resistance result of the test during table 3 V-type small-resistant fastener load 110kN vertical pressure
The longitudinal resistance analysis of table 4 V-type small-resistant fastener when different load
| Vertical load (kN) | Unloaded | 80 | 110 |
| Longitudinal resistance value (kN) | 5.114 | 15.881 | 23.632 |
| The coefficient of friction resistance | —— | 0.20 | 0.21 |
| With no-load drag ratio | —— | 3.105 | 4.621 |
Please refer to table 4, test result shows, when having a lotus, the longitudinal resistance of V-type small-resistant fastener increases with the increase of vertical load; Lotus resistance is had to be without lotus resistance more than 2 times; The coefficient of friction resistance of fastener during lotus is had to be about between 0.20-0.21.
2,7 cover WJ-7 type small-resistant fasteners are tested:
1), when rail does not apply vertical pressure by vertical force application apparatus, the longitudinal resistance result of rail WJ-7 type small-resistant fastener is see table 5.
Rail WJ-7 type slight drag longitudinal resistance experimental data when table 5 is unloaded
2), when rail applies 80kN vertical pressure by vertical force application apparatus, the longitudinal resistance result of rail WJ-7 type small-resistant fastener is see table 6:
Longitudinal resistance result of the test during table 6 WJ-7 type slight drag load 80kN vertical pressure
3), when rail applies 110kN vertical pressure by vertical force application apparatus, the longitudinal resistance result of rail WJ-7 type fastener is see table 7.
Longitudinal resistance result of the test during table 7 WJ-7 type small-resistant fastener load 110kN vertical pressure
The longitudinal resistance analysis of table 8 WJ-7 type small-resistant fastener when different load
| Vertical load (kN) | No-load | 80 | 110 |
| Longitudinal resistance value (kN) | 6.684 | 16.727 | 24.218 |
| The coefficient of friction resistance | —— | 0.21 | 0.22 |
| With no-load drag ratio | —— | 2.503 | 3.623 |
Please refer to table 8, test shows, when having a lotus, the longitudinal resistance of WJ-7 type small-resistant fastener increases with the increase of vertical load; Lotus resistance is had to be without lotus resistance more than 2 times; There is the coefficient of friction resistance of fastener during lotus to be about between 0.21-0.22, fastener longitudinal resistance during different vertical load action can be estimated accordingly.
3, the normal resistance fastener of 8 cover WJ-7 type is tested:
1), when rail does not apply vertical pressure by vertical force application apparatus, the longitudinal resistance result of rail fastening is see table 9:
Rail WJ-7 type normal resistance fastener longitudinal resistance experimental data when table 9 is unloaded
2), when rail applies 50kN vertical pressure by vertical force application apparatus, the longitudinal resistance result of the normal resistance fastener of rail WJ-7 type is see table 10:
Longitudinal resistance result of the test during table 10 WJ-7 type normal resistance load 50kN vertical pressure
The longitudinal resistance analysis of the normal resistance fastener of table 11 WJ-7 type when different load
| Vertical load (kN) | No-load | 50 |
| Longitudinal resistance value (kN) | 18.698 | 34.613 |
| The coefficient of friction resistance | —— | 0.69 |
| With no-load drag ratio | —— | 1.851 |
Normal resistance fastener is when the vertical load of 50kN, and the coefficient of friction resistance is 0.69; Longitudinal resistance is 1.85 times without lotus resistance.
4, the normal resistance fastener of 5 cover WJ-8 type is tested:
1), when rail does not apply vertical pressure by vertical force application apparatus, the longitudinal resistance result of rail fastening is see table 12:
Rail WJ-8 type normal resistance fastener longitudinal resistance experimental data when table 12 is unloaded
2), when rail applies 50kN vertical pressure by vertical force application apparatus, the longitudinal resistance result of the normal resistance fastener of rail WJ-8 type is see table 13:
Longitudinal resistance result of the test during table 13 WJ-8 type normal resistance load 50kN vertical pressure
The longitudinal resistance analysis of the normal resistance fastener of table 14 WJ-8 type when different load
| Vertical load (kN) | No-load | 50 |
| Longitudinal resistance value (kN) | 13.130 | 25.190 |
| The coefficient of friction resistance | —— | 0.50 |
| With no-load drag ratio | —— | 1.919 |
Please refer to table 14, WJ-8 normal resistance fastener is when the vertical load of 50kN, and the coefficient of friction resistance is 0.50; Longitudinal resistance is 1.91 times without lotus resistance.
Through above-mentioned test determination, V-type small-resistant fastener, WJ-7 slight drag and normal resistance fastener, the normal resistance fastener of WJ-8 without longitudinal resistance value when lotus and various different load as following table:
Table 15 each steel rail fastener longitudinal resistance test value summary sheet
Comprehensive above-mentioned test result, can obtain as drawn a conclusion:
(1) when there being lotus effect, the longitudinal resistance of each rail fastening significantly improves, and closely related with the size of vertical load.
(2) V-type small-resistant fastener has the lotus resistance coefficient of friction resistance to be about 0.20-0.21, can calculate fastener longitudinal resistance during different vertical load action accordingly; Consider by the vertical load of 80kN, V-type fastener has lotus resistance to be without more than 3 during lotus times.
(3) WJ-7 small-resistant fastener has the lotus resistance coefficient of friction resistance to be about 0.21-0.22, can calculate fastener longitudinal resistance during different vertical load action accordingly; Consider by the vertical load of 80kN, V-type fastener has lotus resistance to be without more than 2.5 during lotus times.
(4) the WJ-7 normal resistance fastener coefficient of friction resistance about 0.69, can calculate fastener longitudinal resistance during different vertical load action accordingly; Consider by the vertical load of 50kN, V-type fastener has lotus resistance to be without more than 1.8 during lotus times.
(5) the WJ-8 normal resistance fastener coefficient of friction resistance about 0.50, can calculate fastener longitudinal resistance during different vertical load action accordingly; Consider by the vertical load of 50kN, V-type fastener has lotus resistance to be without more than 1.9 during lotus times.
Therefore, can be found out by above-mentioned experimental result, different types of rail fastening is not when having load and load to have different vertical pressure (vertical load), and the longitudinal resistance of fastener is different.The testing arrangement of this steel rail fastener longitudinal resistance that the present embodiment provides and method can simulate the longitudinal load of rail rail fastening when having load, compared with the longitudinal resistance of the rail fastening measured under the state not having load with traditional rail, can react the longitudinal resistance of fastener under rail has lotus state really, its accuracy is high.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the testing arrangement of steel rail fastener longitudinal resistance, is characterized in that, comprises horizontal force application apparatus, vertical force application apparatus, displacement measurement apparatus and fastening devices;
Described horizontal force application apparatus is used for the horizontal thrust applying to be parallel to rail to one end of rail;
Described vertical force application apparatus is used for applying vertical pressure to rail;
Described vertical force application apparatus comprises the first hydraulic jack, the first transverse slat, the second transverse slat;
Described first transverse slat is fixedly installed in described fastening devices, and described second transverse slat is slidably arranged in described fastening devices; And described first transverse slat and described second transverse slat are arranged from top to bottom; Described first hydraulic jack is arranged between described first transverse slat with described second transverse slat and also contacts with described first transverse slat, the second transverse slat respectively; When described second transverse slat slides up and down under the effect of described first hydraulic jack, the space for installing rail can be formed;
The horizontal movement that described displacement measurement apparatus produces when having under horizontal thrust and vertical pressure for measuring rail.
2. the testing arrangement of steel rail fastener longitudinal resistance according to claim 1, is characterized in that, also comprises the gripper shoe for fixing rail and baffle plate, and described horizontal force application apparatus is the second hydraulic jack;
Described baffle plate is longitudinally arranged in described gripper shoe, and rail is also fixed on the supporting plate, and one end and the described baffle plate of described second hydraulic jack offset, the ends contact of the other end and rail.
3. the testing arrangement of steel rail fastener longitudinal resistance according to claim 2, is characterized in that, described fastening devices comprises the first fixed head and the second fixed head;
Described first fixed head and described second fixed head are symmetricly set in described gripper shoe, and described first fixed head is all vertical with described baffle plate with described second fixed head; And the described first fixed head plate face relative with described second fixed head is provided with longitudinal projection;
Described first transverse slat is fixedly installed on described first fixed head and described second fixed head one end away from described gripper shoe; Described second transverse slat is provided with draw-in groove, and described second transverse slat is slidably connected with described first fixed head and described second fixed head respectively by described draw-in groove and described longitudinal projection.
4. the testing arrangement of steel rail fastener longitudinal resistance according to claim 3, is characterized in that, described vertical force application apparatus also comprises at least two roller bearings;
Described first fixed head and described second fixed head are respectively arranged with at least two the first through holes and at least two the second through holes at its thickness direction, and the hole heart of at least two described first through holes is equal to the distance of described gripper shoe, and equal the distance of the hole heart to described gripper shoe of at least two described second through holes;
At least two described roller bearings be arranged in parallel, and its two ends are successively through described first through hole and described second through hole.
5. the testing arrangement of steel rail fastener longitudinal resistance according to claim 4, is characterized in that, also comprises multiple bearing;
Each described roller bearing is provided with at least two described bearings, and for the rail head of rail is blocked.
6. the testing arrangement of steel rail fastener longitudinal resistance according to claim 1, is characterized in that, described displacement measurement apparatus is dial gage;
Described dial gage is at least two.
7. the testing arrangement of steel rail fastener longitudinal resistance according to claim 5, is characterized in that, described draw-in groove and described longitudinally projection be multiple, and all corresponding described longitudinal projection of each described draw-in groove being slidably matched with described longitudinal projection.
8. the testing arrangement of steel rail fastener longitudinal resistance according to claim 7, is characterized in that, also comprises the first reinforcing rib and the second reinforcing rib;
Described first reinforcing rib is arranged between described first fixed head and described gripper shoe, and described second reinforcing rib is arranged between described second fixed head and described gripper shoe.
9. the testing arrangement of steel rail fastener longitudinal resistance according to claim 2, is characterized in that, also comprises multiple support batten;
Multiple described support battens are arranged on the bottom of described gripper shoe, and described gripper shoe are propped up, and multiple described support batten is parallel to each other.
10. utilize a method for the testing arrangement test steel rail fastener longitudinal resistance described in any one of claim 1-9, it is characterized in that, comprise the following steps:
Vertical force application apparatus is used to apply vertical pressure to the first predetermined value to rail;
Horizontal force application apparatus is used to be continuously applied horizontal pressure force to the second predetermined value at a predetermined velocity to one end of rail;
The horizontal movement that under utilize displacement measurement apparatus to test concrete pressure that rail applies at horizontal force application apparatus, described rail occurs;
Record the described horizontal pressure force of horizontal force application apparatus applying and the horizontal movement of rail generation, when described horizontal pressure force keeps constant, and when described horizontal movement continues to increase, obtain longitudinal resistance.
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| DE102006025717A1 (en) * | 2006-05-30 | 2007-12-06 | Dieter Dr.-Ing. Wilkens | Schienenprüffahrzeug |
| CN201003131Y (en) * | 2006-12-28 | 2008-01-09 | 中铁一局集团有限公司 | Intelligent precision positioning machine for high-speed railway slag-free rail |
| CN201364212Y (en) * | 2009-02-23 | 2009-12-16 | 北京交通大学 | Transverse resistance testing equipment of railway ballast track bed |
| CN103063451A (en) * | 2012-12-26 | 2013-04-24 | 浙江大学 | Rail transit train wholly moving load analog loading method and device |
| CN103061219A (en) * | 2013-01-14 | 2013-04-24 | 武汉汉宁科技有限公司 | Method and device for automatically checking fastening states of railway fasteners and spring fasteners |
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