CN211477855U - Portable railway elastic strip buckling pressure on-line high-precision detection device - Google Patents
Portable railway elastic strip buckling pressure on-line high-precision detection device Download PDFInfo
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- CN211477855U CN211477855U CN201920617231.5U CN201920617231U CN211477855U CN 211477855 U CN211477855 U CN 211477855U CN 201920617231 U CN201920617231 U CN 201920617231U CN 211477855 U CN211477855 U CN 211477855U
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Abstract
The utility model relates to a portable railway bullet strip withhold on-line high accuracy detection device, include: crossbeam (1), fixed arm (2), afterburning post (3), bottom anticreep fixation clamp (4), force sensor (5), chuck (6), afterburning post (3) sets up respectively at crossbeam (1) both ends, and the bottom all contacts with the rail foot, force sensor (5) set up the below at crossbeam (1) intermediate position, chuck (6) set up in force sensor (5) below, fixed arm (2) one end is connected on afterburning post (3), and the other end is fixed at rail (8) overhead. Compared with the prior art, the utility model discloses the device is simple portable, exerts the same reaction force on the rail foot of strong point when the bullet strip is drawn up, has guaranteed that the bullet strip is mentioned highly just in time be the bullet journey of fastener, has avoided under the rail elastic backing plate to arouse rail foot resilience error, and the withholding force value precision of detection is accurate, can be suitable for the test of various bullet strip withholding force, and the atress situation is stable when having guaranteed the witnessed inspections bullet strip withholding force.
Description
Technical Field
The utility model relates to a track traffic field, concretely relates to online high accuracy detection device of portable railway bullet strip withholding force.
Background
The fastener system is used as a key part in a railway track structure, bears the impact load of a steel rail when a train passes through, resists longitudinal and transverse acting forces, and plays an important role in ensuring the elasticity of the track and the geometric dimension of the track. Different technical indexes are specified for the assembly, vibration damping performance, insulating performance, steel rail position adjusting capacity, buckling pressure, elastic stroke, steel rail longitudinal resistance and the like of fasteners of different types of fastener systems. The elastic strip is used as a part for connecting the steel rail and the track in the fastener system, the buckling pressure of the elastic strip plays an important role in safe operation of a vehicle, and therefore accurate measurement of the buckling pressure value of the elastic strip in an operating line plays a crucial role in predicting the service life of the elastic strip.
At present, there are two main types of testing devices for the buckling force of elastic strips.
The utility model provides a be indoor fastener bullet strip withhold force testing arrangement, be about to the bullet strip and install on testing arrangement, mention the bullet strip withhold end with anchor clamps, the withhold force of direct measurement bullet strip, because the testing arrangement bottom is the rigid contact, this kind of measuring method is more accurate, but this kind of device and equipment are bulky, and integrated piece is many, can't carry out the test of online track fastener bullet strip withhold force.
The other is a lever testing device which is improved according to the proposal and can carry out the buckling pressure of the elastic strip of the on-line fastener, the testing device utilizes the lever principle, the fulcrum in the middle of the lever acts on the upper surface of the rail head of the steel rail, one end part of the lever is tested manually, the other end part of the lever is used for clamping the elastic strip by a designed clamp and lifting the buckling end of the elastic strip upwards along the vertical direction, when the buckling point of the elastic strip is just separated from the rail foot of the steel rail (tested by a plug gauge), the tensile force borne by the clamp is the buckling pressure of the elastic strip, the proposal has the advantages of convenient carrying and on-line testing, but the measurement error of the buckling pressure value is large because the rail bottom of the steel rail is not in rigid contact, the rail bottom of the steel rail is provided with an under-rail pad and a fastener rubber pad, if the lever fulcrum device is used for testing, along with the continuous lifting force in the vertical direction, when the conventional plug gauge is used for measurement, the stroke of the elastic strip buckling end is larger when the elastic strip is separated from a steel rail, so that the elastic strip is pulled in the elastic process, and the buckling pressure of the elastic strip measured on line is larger.
Disclosure of Invention
The utility model aims at overcoming the error that above-mentioned current device exists, and provide a new installation of effectively overcoming current lever fastener bullet strip withholding force on-line measuring, can accurate measurement online installation bullet strip withholding force, and simple structure, the test is stable, the online high accuracy detection device of portable bullet strip withholding force that the precision is high and portable.
The purpose of the utility model can be realized through the following technical scheme: the utility model provides an online high accuracy detection device of portable railway bullet strip withhold force which characterized in that includes: crossbeam, fixed arm, add power post, bottom anticreep fixation clamp, force sensor, chuck, add the power post and set up respectively at the crossbeam both ends, and the bottom all contacts with the rail foot, force sensor sets up the below at the crossbeam intermediate position, the chuck sets up in force sensor below, fixed arm one end is connected on the power post, and the other end is fixed overhead at the rail to guarantee that the device keeps vertical rising.
The stressing column comprises a fixed column and a lifting column above the fixed column, wherein a base is arranged at the bottom of the fixed column, and the base is attached to one side of the rail foot of the steel rail when in use.
The lifting column of the boosting column is loaded by a jack, a hydraulic pump or pneumatic boosting or a screw rod lead screw or a bolt nut mechanism.
The base is L-shaped, and two surfaces of the base are respectively attached to two surfaces of the steel rail foot.
The bottom anticreep fixation clamp be the recess form, the rail bottom is passed to the bottom connecting strip, the both sides clamping piece presss from both sides respectively and establishes in rail foot both sides, just the base of stress column is located between clamping piece and the rail foot, and the base of stress column is fixed with rail opposite side rail foot through bottom anticreep fixation clamp.
The bottom anti-falling fixing clamp is a spring clamp or other locking devices with bolts or threads, and the force application column and the steel rail are fixed together from the bottom.
The fixed arm is connected with the stressing column and the steel rail, and the clamp on the fixed arm is clamped on the contact action edge of the rail head on the other side of the steel rail.
The fixed arm comprises a top connecting beam and clamping clips on two sides of the top connecting beam, a clamping ring extending out is arranged at one corner of the fixed arm, the clamping ring is sleeved on the stressing column, and the fixed arm is downwards clamped on two sides of the steel rail from the top.
The chuck directly acts on the elastic strip of the tested fastener, and the chuck comprises e-type, w-type, PR-type and switch-type quick elastic strips. The on-line testing device for the buckling pressure is suitable for the buckling pressure test of any fastener elastic strip, and only different hinged chucks need to be replaced.
The top of the tension sensor is connected with the cross beam, the bottom of the tension sensor is connected with the chuck, the tension sensor is connected with the digital display screen through a force sensor signal wire, the tension value of the chuck is displayed through the digital display screen, or the tension sensor is connected with a strain acquisition instrument and a computer to display the force value.
Compared with the prior art, the utility model provides an online high accuracy detection device of portable railway bullet strip withholding force, will apply the same reaction force on the rail foot of contact point through afterburning column base when pulling up the bullet strip, it is unchangeable basically to have kept the fastener atress situation when detecting bullet strip withholding force, improve test data's accuracy nature on the principle from bullet strip atress and deformation, can effectively overcome the phenomenon that bullet process was drawn and withholding force is high on the high side among the current bullet strip withholding force testing arrangement, can accurately measure the withholding force of the online bullet strip of installation, moreover, the steam generator is simple in structure, and convenient for operation, the precision is high, be suitable for different fasteners and different ballast structures in the various circuits.
Drawings
FIG. 1 is a diagram of the overall apparatus of example 1;
FIG. 2 is a schematic view of the structure of a force application column in the apparatus according to example 1;
FIG. 3 is a schematic view showing the structure of a fixing arm in the device according to example 1;
FIG. 4 is a schematic view of the bottom retaining clip of the device of example 1;
FIG. 5 is a schematic view showing the structure of a chuck in the apparatus according to example 1;
FIG. 6 is a diagram of the overall apparatus of example 2;
FIG. 7 is a schematic view showing the structure of a chuck in the apparatus according to example 2;
FIG. 8 is a diagram of the overall apparatus of example 3.
In the figure, the symbols are represented as: the steel rail anti-drop device comprises a beam 1, a fixed arm 2, a force application column 3, a base 31, a bottom anti-drop fixed clamp 4, a tension sensor 5, a chuck 6, a digital display screen 7 and a steel rail 8.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Example 1:
as shown in fig. 1, a portable railway elastic strip buckling force online high-precision detection device comprises: crossbeam 1, fixed arm 2, afterburning post 3, bottom anticreep fixation clamp 4, tension sensor 5, chuck 6 and the digital display screen 7 that shows force sensor numerical value. The stress application column 3 is respectively arranged at two ends of the beam 1, the tension sensor 5 is arranged below the middle position of the beam 1, the chuck 6 is arranged below the tension sensor 5, one end of the fixed arm 2 is connected to the stress application column 3, the other end of the fixed arm 2 is fixed to the rail head of the steel rail 8, so that the device is kept vertical, and a signal wire passing through the force sensor numerical display screen 7 is connected to the tension sensor 5.
As shown in fig. 2, the stressing column 3 comprises a fixed column and a lifting column above the fixed column, wherein a base 31 is arranged at the bottom of the fixed column, and the base 31 is attached to one side of the rail foot of the steel rail 8 in use. The base 31 is generally L-shaped, and two faces thereof are respectively attached to two faces of the rail foot of the steel rail 8. The lifting column of the stressing column 3 is stressed by a jack, a hydraulic pump or pneumatic power or loaded by a screw rod lead screw or a bolt nut mechanism.
As shown in fig. 4, the bottom anti-drop fixing clamp 4 is in a groove shape, the bottom connecting strip penetrates through the bottom of the steel rail 8, the clamping pieces on the two sides are respectively clamped on the two sides of the rail foot of the steel rail 8, the base 31 of the stressing column 3 is located between the clamping pieces and the rail foot of the steel rail 8, and the base 31 of the stressing column 3 is fixed with the rail foot on the other side of the steel rail 8 through the bottom anti-drop fixing clamp 4. The bottom anti-falling fixing clamp 4 is a spring clamp or other locking devices with bolts or threads, and fixes the force application column 3 and the steel rail 8 together from the bottom.
As shown in fig. 3, the fixing arm 2 is connected with the stressing column 3 and the steel rail 8, and the clamp on the fixing arm 2 is clamped on the rail head contact action edge on the other side of the steel rail 8. The fixed arm 2 comprises a top connecting beam and clamps at two sides of the top connecting beam, a clamping ring extending out is arranged at one corner of the fixed arm, the clamping ring is sleeved on the stressing column 3, and the fixed arm 2 is downwards clamped at two sides of the steel rail from the top.
As shown in fig. 5, the said chuck 6 acts directly on the tested fastener elastic strip, and the on-line testing device for buckling force is suitable for the buckling force test of any fastener elastic strip, and only needs to change different hinged chucks 6, such as e-type, w-type, PR-type and switch-type quick elastic strips.
The top of the tension sensor 5 is connected with the cross beam 1, the bottom of the tension sensor is connected with the chuck 6, the tension sensor 5 is connected with the digital display screen 7 through a force sensor signal wire, 6 tension values of the chuck are displayed through the digital display screen 7, or the tension sensor is connected with a strain acquisition instrument and a computer to display the force values.
With reference to fig. 1, 2 and 3, in use, the bottom base 31 of the stressing column 3 of the elastic strip buckling pressure online high-precision detection device is attached to one side of the rail foot of the steel rail 8; the fixed arm 2 is connected with the stressing column 3 and the steel rail 8, and the clamp on the fixed arm 2 is clamped on the head of the steel rail 8; the bottom anti-drop fixing clamp 4 fixes the base 31 of the stressing column 3 and the rail foot at the other side of the steel rail 8, so that the device is prevented from slipping and is kept vertical; the clamp 6 clamps the withholding end of bullet strip, makes the afterburning post 3 rise slowly through applying the power supply, and afterburning post 3 jack-up crossbeam 1 and vertical rising to make clamp 6 upwards mention bullet strip withholding end, when bullet strip withholding end just with 8 rail feet separation of rail, through the clearance gage measurement confirmation back, force sensor numerical value display screen 8 shows withholding force numerical value, is the withholding force of bullet strip promptly.
In this embodiment, the chuck 6 is designed for the quick elastic strip fastener, the quick elastic strip presses the steel rail through the elastic strip elastic tongue, and the locking bolt is arranged in the middle of the chuck, so that the chuck is prevented from falling off in the process of lifting the elastic strip.
Example 2:
Referring to fig. 6 and 7, in this embodiment, the clamping head 6 is designed for an e-shaped elastic strip, one end of the e-shaped elastic strip is connected with a fastening iron base plate in a normal installation process, the toe end of the e-shaped elastic strip is pressed on a steel rail, the elastic strip is not provided with a locking bolt, the clamping head is designed to be a scissor-type clamping head, and when the clamping head is pulled, the clamping head automatically clamps the fastening end of the elastic strip through a hinge and is lifted.
Example 3:
referring to fig. 8, in this embodiment, the main structure of embodiment 3 is the same as that of embodiment 1, the clamp 6 is designed for the w-shaped elastic strip, the w-shaped elastic strip is normally installed by applying a pre-pressure through the bolt at the middle ring, the two end toes of the w-shaped elastic strip are buckled on the steel rail, and the two toe ends of the w-shaped elastic strip buckled on the steel rail are clamped and lifted by the clamp 6. Other structures and embodiments are the same as those of example 1.
Claims (10)
1. The utility model provides an online high accuracy detection device of portable railway bullet strip withhold force which characterized in that includes: crossbeam (1), fixed arm (2), afterburning post (3), bottom anticreep fixation clamp (4), force sensor (5), chuck (6), afterburning post (3) sets up respectively at crossbeam (1) both ends, and the bottom all contacts with the rail foot, force sensor (5) set up the below at crossbeam (1) intermediate position, chuck (6) set up in force sensor (5) below, fixed arm (2) one end is connected on afterburning post (3), and the other end is fixed at rail (8) overhead.
2. The portable railway elastic strip buckling pressure online high-precision detection device as claimed in claim 1, wherein the stressing column (3) comprises a fixed column and a lifting column above the fixed column, wherein a base (31) is arranged at the bottom of the fixed column, and the base (31) is attached to one side of a rail foot of the steel rail (8) in use.
3. The portable railway elastic strip buckling pressure online high-precision detection device as claimed in claim 2, wherein the lifting column of the stressing column (3) is loaded by a jack, a hydraulic pump or pneumatic stressing, or by a screw rod screw or bolt nut mechanism.
4. The portable railway elastic strip buckling pressure online high-precision detection device as claimed in claim 2, wherein two surfaces of the base (31) are respectively attached to two surfaces of a rail foot of a steel rail (8).
5. The portable railway elastic strip buckling pressure online high-precision detection device as claimed in claim 2, wherein the bottom anti-falling fixing clamp (4) is groove-shaped, the bottom connecting strip penetrates through the bottom of the steel rail (8), the clamping pieces on two sides are respectively clamped on two sides of the rail foot of the steel rail (8), the base (31) of the stress column (3) is located between the clamping pieces and the rail foot of the steel rail (8), and the base (31) of the stress column (3) is fixed to the rail foot on the other side of the steel rail (8) through the bottom anti-falling fixing clamp (4).
6. The portable railway elastic strip buckling pressure online high-precision detection device as claimed in claim 5, wherein the bottom anti-falling fixing clamp (4) is a spring clamp, and the stressing column (3) and the steel rail (8) are fixed together from the bottom.
7. The portable railway elastic strip buckling pressure online high-precision detection device as claimed in claim 1, wherein the fixing arm (2) is connected with the stressing column (3) and the steel rail (8).
8. The portable railway elastic bar buckling force online high-precision detection device as claimed in claim 7, wherein the fixed arm (2) comprises a top connecting beam and clamping clips on two sides of the top connecting beam, a protruding snap ring is arranged at one corner of the top connecting beam and sleeved on the stressing column (3), and the fixed arm (2) is clamped on two sides of a steel rail from the top downwards.
9. The portable railway elastic strip buckling force online high-precision detection device as claimed in claim 1, wherein the chuck (6) directly acts on the elastic strip of the buckle to be detected, and the chuck (6) comprises an e-type, a w-type or a PR-type.
10. The portable railway elastic bar buckling pressure online high-precision detection device according to claim 1, wherein the top of the tension sensor (5) is connected with the beam (1), the bottom of the tension sensor is connected with the chuck (6), the tension sensor (5) is connected with a digital display screen (7) through a force sensor signal line, a tension value of the chuck (6) is displayed through the digital display screen (7), or the tension sensor is connected with a strain acquisition instrument and a computer to display a force value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920617231.5U CN211477855U (en) | 2019-04-30 | 2019-04-30 | Portable railway elastic strip buckling pressure on-line high-precision detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920617231.5U CN211477855U (en) | 2019-04-30 | 2019-04-30 | Portable railway elastic strip buckling pressure on-line high-precision detection device |
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| CN211477855U true CN211477855U (en) | 2020-09-11 |
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| CN201920617231.5U Active CN211477855U (en) | 2019-04-30 | 2019-04-30 | Portable railway elastic strip buckling pressure on-line high-precision detection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110095341A (en) * | 2019-04-30 | 2019-08-06 | 上海工程技术大学 | A kind of online high-precision detection device of Portable railway elastic-strip pressure |
| CN111994125A (en) * | 2020-09-17 | 2020-11-27 | 西南交通大学 | Rail bottom slope detection tool support and rail bottom slope detection equipment |
-
2019
- 2019-04-30 CN CN201920617231.5U patent/CN211477855U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110095341A (en) * | 2019-04-30 | 2019-08-06 | 上海工程技术大学 | A kind of online high-precision detection device of Portable railway elastic-strip pressure |
| 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 |
| CN111994125A (en) * | 2020-09-17 | 2020-11-27 | 西南交通大学 | Rail bottom slope detection tool support and rail bottom slope detection equipment |
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