CN101487777B - Test equipment for support stiffness of road bed below railway ballast track sleeper - Google Patents

Test equipment for support stiffness of road bed below railway ballast track sleeper Download PDF

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Publication number
CN101487777B
CN101487777B CN2009100784713A CN200910078471A CN101487777B CN 101487777 B CN101487777 B CN 101487777B CN 2009100784713 A CN2009100784713 A CN 2009100784713A CN 200910078471 A CN200910078471 A CN 200910078471A CN 101487777 B CN101487777 B CN 101487777B
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China
Prior art keywords
sleeper
afterburning
test
rail
road bed
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Expired - Fee Related
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CN2009100784713A
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Chinese (zh)
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CN101487777A (en
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高亮
尹辉
肖宏
辛涛
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Beijing Jiaotong University
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Beijing Jiaotong University
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Abstract

The invention relates to a support rigidity test device for a road bed below a ballast track sleeper of a railway, and belongs to the field of rail engineering equipment. A jack is positioned at left side and right side of a steel rail on a test sleeper respectively, a force transducer is positioned between a right jack and a right jack and between a left stress application trestle and a right stress application trestle respectively, electronic displacement meters at the left side and the right side of the steel rail are fixed at an approaching sleeper close to the test sleeper, measuring heads are positioned between the steel rails and the jacks and contacted with the upper surface of the test sleeper, and the front ends of the two stress application trestle clamping arms of the stress application trestles. A fastener of the test sleeper is loosened; and when force is applied on the jacks, the test sleeper downwards generates vertical displacement, and the electronic displacement meter measures the vertical displacement. The test device above the steel rail tests the support rigidity of the road bed below the sleeper without disturbing the road bed before test, does not damage state of a railway ballast in a sleeper box, has comparatively simple and convenient operation, tests the sleeper bottom rigidity more accurately, and is suitable for testing road bed states of ballast tracks of newly built railways and high-speed railways.

Description

The road bed below railway ballast track sleeper test equipment for support stiffness
Technical field
The invention belongs to the railway construction apparatus field, relate to a kind of road bed below railway ballast track sleeper test equipment for support stiffness.
Background technology
Railway roadbed support stiffness testing apparatus need be tested the sleeper both sides below rail under traditional pillow, when test, need excavate the railway roadbed of sleeper both sides, method of testing is comparatively complicated, test period is long, and destroyed the virgin state of railway roadbed, test result and actual certain discrepancy arranged, newly-built common railway of incompatibility and high-speed railway have the test of the ballast-bed state of tiny fragments of stone, coal, etc. track.Newly-built common railway and high-speed railway have the test of the ballast-bed state of tiny fragments of stone, coal, etc. track, require not disturbance railway roadbed before a kind of test, do not destroy railway ballast state in the pillow box, operate comparatively easyly, can above rail, rest the head on the road bed below railway ballast track sleeper test equipment for support stiffness of end rigidity test more exactly.
Summary of the invention
In view of problems of the prior art, the object of the present invention is to provide a kind of road bed below railway ballast track sleeper test equipment for support stiffness, it is characterized in that described road bed below railway ballast track sleeper test equipment for support stiffness comprises afterburning frame, two lifting jack 3, two force cells 4, two electron displacement meters 5; Two lifting jack 3 place rail 1 left and right sides respectively on test sleeper 2, about two force cells 4 place respectively two lifting jack 3 and afterburning frame about between two afterburning booster posts 7, the front end of two afterburning frame clamping limbs 10 of afterburning frame is clamped the rail head of rail 1; Two electron displacement meters 5 of rail 1 left and right sides are fixed on test the closing on the sleeper of sleeper 2, and the gauge head of electron displacement meter 5 contacts with the upper surface of testing sleeper 2 between rail 1 and lifting jack 3.
An afterburning booster post 7 is respectively welded at both ends, the left and right sides on the bottom surface of the afterburning frame crossbeam 6 of the trunk of described afterburning frame, afterburning booster arm contiguous block 8 of central point welding, the upper end of two afterburning booster arms 9 is hinged by a bolt 11 and links together with afterburning booster arm contiguous block 8, the rear end of the lower end of each afterburning booster arm 9 and an afterburning frame clamping limb 10 is hinged by a bolt 11, both can rotate mutually by bolt 11, the front end of two afterburning frame clamping limbs 10 is crooked in opposite directions, the middle part of two afterburning frame clamping limbs 10 is hinged by a bolt 11, both can rotate mutually by bolt 11, constitute a flexible pincerlike structure, the front end of two afterburning frame clamping limbs 10 is used to clamp the rail head of rail 1.
Described force cell 4 is the pillar force cell.
Principle of work of the present invention is as follows:
Have under the tiny fragments of stone, coal, etc. track pillow before the railway roadbed support stiffness in test, the fastener that will test earlier between sleeper 2 and the two strands of rail all unclamps.Clamp with afterburning frame clamping limb 10 and tighten up front end behind the rail head of rail 1 and by lifting jack 3 reinforcings.Because rail 1 has only unclamped the fastener on test sleeper 2, and all links together by fastener with other sleeper at far-end, so rail 1 itself does not produce displacement.When making lifting jack 3 reinforcings, added power is delivered on the rail 1 by force cell 4 and afterburning frame, reacts on simultaneously on the test sleeper 2, makes to test sleeper 2 generation vertical deviations downwards.At this moment, contact along with test sleeper 2 vertical deviations, and is measured the vertical deviation value of testing sleeper 2 this moment at the electron displacement meter 5 of test on the sleeper 2.Record pairing vertical deviation by applying different vertical forces, can obtain the vertical support stiffness test curve of railway roadbed under the single sleeper.
Beneficial effect of the present invention is, the present invention is testing the support stiffness of railway roadbed under resting the head on above the rail, produce counter-force by the afterburning frame of clamping rail, two jack pair sleepers by the rail both sides apply vertical acting force, needn't the disturbance railway roadbed before the test, do not destroy the state of railway ballast in the pillow box, operate comparatively easy, therefore can rest the head on end rigidity test more exactly, and the collection of data automatic collection, treatment facility and the software special-purpose with analyzing employing, be applicable to that newly-built common railway and high-speed railway have the test of the ballast-bed state of tiny fragments of stone, coal, etc. track.
Description of drawings:
Fig. 1 is a road bed below railway ballast track sleeper test equipment for support stiffness synoptic diagram.
Fig. 2 is afterburning frame synoptic diagram.
Among the figure, 1 is rail, and 2 are the test sleeper, and 3 is lifting jack, and 4 is force cell, and 5 are the electron displacement meter, and 6 is afterburning frame crossbeam, and 7 is afterburning booster post, and 8 is afterburning booster arm contiguous block, and 9 is afterburning booster arm, and 10 is afterburning frame clamping limb, and 11 is bolt.
Embodiment
Fig. 1 is one embodiment of the present of invention, and Fig. 2 is the structural representation of afterburning frame.As shown in Figure 1, embodiments of the invention comprise afterburning frame, two lifting jack 3, two force cells 4, two electron displacement meters 5; As shown in Figure 2, an afterburning booster post 7 is respectively welded at two ends, the left and right sides on the bottom surface of the afterburning frame crossbeam 6 of the trunk of afterburning frame, afterburning booster arm contiguous block 8 of central point welding, the upper end of two afterburning booster arms 9 is hinged by a bolt 11 and links together with afterburning booster arm contiguous block 8, the rear end of the lower end of each afterburning booster arm 9 and an afterburning frame clamping limb 10 is hinged by a bolt 11, both can rotate mutually by bolt 11, the middle part of two afterburning frame clamping limbs 10 is hinged by a bolt 11, both can rotate mutually by bolt 11, and the front end of two afterburning frame clamping limbs 10 is crooked in opposite directions.As shown in Figure 1, two lifting jack 3 place rail 1 left and right sides respectively on test sleeper 2, about two force cells 4 place respectively two lifting jack 3 and about between two afterburning booster posts 7, the front end of two afterburning frame clamping limbs 10 of afterburning frame is clamped the rail head of rail 1, two electron displacement meters 5 of rail 1 left and right sides are fixed on test the closing on the sleeper of sleeper 2, the gauge head of electron displacement meter 5 between rail 1 and lifting jack 3 with test sleeper 2 upper surfaces and contact.
The operating process of present embodiment is: have under the tiny fragments of stone, coal, etc. track pillow before the railway roadbed support stiffness in test, the fastener that will test earlier between sleeper 2 and the two strands of rail all unclamps.Tighten up front end clamp the rail head of rail 1 with afterburning frame clamping limb 10 after.First precompressed lifting jack 3 before the test makes that lifting jack 3, force cell 4 and afterburning frame are stressed jointly.Can rise after afterburning frame is stressed, tighten up the front end of afterburning frame clamping limb 10 simultaneously more, being fixed on the rail 1 tightly, then, with the reading zeroing of force cell 4 and electron displacement meter 5.Test begins to test after preparing all to finish.Because rail 1 has only unclamped the fastener on test sleeper 2, and all links together by fastener with other sleeper at far-end, so rail 1 itself does not produce displacement.When making lifting jack 3 reinforcings, added power is delivered on the rail 1 by force cell 4 and afterburning frame, reacts on simultaneously on the test sleeper 2, makes to test sleeper 2 generation vertical deviations downwards.At this moment, contact along with test sleeper 2 vertical deviations, and is measured the vertical deviation value of test sleeper 2 at the electron displacement meter 5 of test on the sleeper 2.Record pairing vertical deviation by applying different vertical forces, can obtain the vertical support stiffness test curve of railway roadbed under the single sleeper.
The present invention is applicable to that newly-built common railway and high-speed railway have the test of the ballast-bed state of tiny fragments of stone, coal, etc. track.

Claims (2)

1. road bed below railway ballast track sleeper test equipment for support stiffness, it is characterized in that described road bed below railway ballast track sleeper test equipment for support stiffness comprises afterburning frame, two lifting jack (3), two force cells (4), two electron displacement meters (5); Two lifting jack (3) place rail (1) left and right sides respectively on test sleeper (2), about two force cells (4) place respectively two lifting jack (3) and about between two afterburning booster posts (7), the front end of two afterburning frame clamping limbs (10) of afterburning frame is clamped the rail head of rail (1); Two electron displacement meters (5) of rail (1) left and right sides are fixed on test sleeper the closing on the sleeper of (2), and the gauge head of electron displacement meter (5) contacts with the upper surface of testing sleeper (2) between rail (1) and lifting jack (3);
In the described afterburning frame, an afterburning booster post (7) is respectively welded at two ends, the left and right sides on the bottom surface of the afterburning frame crossbeam of the trunk of afterburning frame (6), a central point welding afterburning booster arm contiguous block (8), the upper end of two afterburning booster arms (9) is hinged by a bolt (11) and links together with afterburning booster arm contiguous block (8), the rear end of the lower end of each afterburning booster arm (9) and an afterburning frame clamping limb (10) is hinged by a bolt (11), the front end of two afterburning frame clamping limbs (10) is crooked in opposite directions, the middle part of two afterburning frame clamping limbs (10) is hinged by a bolt (11), constitutes a flexible pincerlike structure.
2. road bed below railway ballast track sleeper test equipment for support stiffness according to claim 1 is characterized in that, described force cell (4) is the pillar force cell.
CN2009100784713A 2009-02-23 2009-02-23 Test equipment for support stiffness of road bed below railway ballast track sleeper Expired - Fee Related CN101487777B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009100784713A CN101487777B (en) 2009-02-23 2009-02-23 Test equipment for support stiffness of road bed below railway ballast track sleeper

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Application Number Priority Date Filing Date Title
CN2009100784713A CN101487777B (en) 2009-02-23 2009-02-23 Test equipment for support stiffness of road bed below railway ballast track sleeper

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CN101487777B true CN101487777B (en) 2011-01-19

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Families Citing this family (13)

* Cited by examiner, † Cited by third party
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CN102539238A (en) * 2011-12-31 2012-07-04 浙江省三门县世泰实业有限公司 Precision-grade material tension and compression stiffness tester
CN103792141B (en) * 2014-01-18 2016-02-10 浙江大学 There is tiny fragments of stone, coal, etc. railroad sleeper roadbed system deformation failure experimental provision
CN103837419B (en) * 2014-02-26 2016-01-13 沈阳工业大学 Railway elastic bar fatigue tester
CN104048820B (en) * 2014-06-19 2017-02-01 湖南高速铁路职业技术学院 Railroad sleeper detection data acquisition device and system
CN105527166A (en) * 2015-12-29 2016-04-27 北京交通大学 A device for testing a stress state of an e-shaped elastic strip of a railroad fastener
CN106289819B (en) * 2016-08-17 2018-10-23 太仓中博铁路紧固件有限公司 Detecting tool and its detection method for detecting rail lower substrate combined load
CN108318125B (en) * 2018-01-26 2021-03-16 华东交通大学 Method for detecting ballast rigidity based on vertical vibration characteristic of steel rail
CN109060501B (en) * 2018-07-12 2019-09-20 深圳天溯计量检测股份有限公司 A kind of resistance to bending and unbending test device
CN109932245B (en) * 2019-04-18 2024-08-13 天津铁路信号有限责任公司 Rail pressure test platform
CN110095341B (en) * 2019-04-30 2024-04-23 上海工程技术大学 Portable railway bullet strip withholds online high accuracy detection device of pressure
CN110389081B (en) * 2019-07-23 2024-04-02 中国铁道科学研究院集团有限公司铁道建筑研究所 Ballast bed compactness testing device and method based on high polymer material
CN114323511B (en) * 2021-12-09 2023-08-25 川南城际铁路有限责任公司 Accurate testing device and method for railway track supporting rigidity
CN115791456B (en) * 2023-02-06 2023-04-25 中国铁道科学研究院集团有限公司铁道建筑研究所 Railway ballasted track rigidity evaluation method

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