CN105170729B - The linear pre-bending construction method of tramcar grooved rail curve - Google Patents
The linear pre-bending construction method of tramcar grooved rail curve Download PDFInfo
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- CN105170729B CN105170729B CN201510604387.6A CN201510604387A CN105170729B CN 105170729 B CN105170729 B CN 105170729B CN 201510604387 A CN201510604387 A CN 201510604387A CN 105170729 B CN105170729 B CN 105170729B
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Abstract
The invention discloses a kind of linear pre-bending construction method of tramcar grooved rail curve, including step：First, grooved rail pre-bending point is determined：N pre-bending point is measured on grooved rail to be bent；2nd, grooved rail pre-bending：Pre-bending is carried out n time by elder generation to rear point using hydraulic rail bender；Hydraulic rail bender includes frame, pushing tow jack and two grooved rail holders；Grooved rail pre-bending process to be bent is as follows：201st, first time pre-bending：Hydraulic rail bender is carried out pre-bending loaded on first time pre-bending position；202nd, pre-bending next time：Hydraulic rail bender is moved to pre-bending position backward next time carries out pre-bending；203rd, 202 are repeated several times, n pre-bending process is completed.The inventive method step is simple, reasonable in design and good using easy to operate, using effect, in advance grooved rail is curved before laying, the bending of grooved rail is linear easily controllable and can eliminate the horizontal internal stress of grooved rail, conventional rail framed bent rail method can be solved and cannot meet the difficult problem that sharp radius curve location is laid a railway track.
Description
Technical field
The invention belongs to construction of railways technical field, applies more particularly, to a kind of linear pre-bending of tramcar grooved rail curve
Work method.
Background technology
In tramcar process of construction, street railway route selection typically utilizes major urban arterial highway road center or
The existing greenbelt of side is transformed, circuit mainly along urban road Synchronization Design, when tramcar along urban road from one
When major trunk roads proceed to next major trunk roads and turn to, by intersection periphery existing building and normal urban transportation can not be affected to be limited
System, typically can only pass through from intersection central authorities, and it is too small to thus result in sweep of the tramcar when turning, and generally turns
Radius is between 30 meters～110 meters.When this sharp radius curve location carries out laying a railway track construction, traditional section of track frame rail method is profit
Grooved rail is pressed from the lateral the inner side of curve of extra curvature with grooved rail bracing frame diagonal brace is mandatory, full so as to change grooved path shape
Sufficient 3 in Curve Segment laying requirement, but when adopting construction in this way, because circuit both sides mostly are the bituminous paving for cutting, diagonal brace stress
Strong point rigidity does not reach construction requirement, and excessive per 2.5 meters of a pair of diagonal brace installing spaces, and grooved path shape control accuracy is difficult
To meet design and test standard requirement, meanwhile, this conventional construction method can cause to produce excessive horizontal planted agent inside grooved rail
Power, causes damage to grooved rail fastener, can all bring very big security risk during construction stage and operation, therefore traditional
Section of track frame rail method is not suitable for the laying of tramcar 3 in Curve Segment grooved rail.
Content of the invention
The technical problem to be solved is for above-mentioned deficiency of the prior art, there is provided a kind of tramcar
The linear pre-bending construction method of grooved rail curve, its method and step are simple, reasonable in design and good using easy to operate, using effect,
In advance grooved rail is curved before laying, the bending of grooved rail is linear easily controllable and can eliminate the horizontal internal stress of grooved rail, energy
Effectively solving conventional rail framed bent rail method cannot meet the difficult problem that sharp radius curve location is laid a railway track.
For solving above-mentioned technical problem, the technical solution used in the present invention is：A kind of tramcar grooved rail curve is linear
Pre-bending construction method, it is characterised in that the method is comprised the following steps：
Step one, grooved rail pre-bending point are determined：Measured on grooved rail to be bent using dimensional measuring instrument from front to back
Go out n pre-bending point, and the n pre-bending point that measures is marked respectively；The n pre-bending point is respectively from front to back
Pre-bending point a1, pre-bending point a2 ..., pre-bending point an；Wherein, n is positive integer and n >=3；Pre-bending point a1 and grooved rail front end to be bent
Between spacing and the two neighboring pre-bending point between spacing be d, pre-bending point an and grooved rail rear end to be bent it
Between spacing≤d；Wherein, d=400mm～600mm；
The grooved rail to be bent is the straight grooved rail in horizontal layout；
Step 2, grooved rail pre-bending：Linear after according to the grooved rail pre-bending to be bent being pre-designed, using the curved rail of hydraulic pressure
Device is treated bending grooved rail by elder generation for n time to rear point and carries out pre-bending；The hydraulic rail bender include frame, one in the frame
Two grooved rail holders for being symmetrically laid in pushing tow jack both sides of the pushing tow jack of side and left and right, two grooved rails
It is attached in hinged way between holder and frame；The pre-bending process of the grooved rail to be bent is as follows：
Step 201, first time pre-bending：The first time pre-bending position that the hydraulic rail bender is installed on grooved rail to be bent
Put, then first time pre-bending is carried out using the hydraulic rail bender；
Now, two of hydraulic rail bender grooved rail holders be clamped in respectively grooved rail front end to be bent and
On pre-bending point a2, the pushing tow jack withstands on the inside of grooved rail to be bent and which is located at pre-bending point a1 present positions；
Step 202, next time pre-bending：The pre-bending position next time that the hydraulic rail bender is moved to grooved rail to be bent backward
Put, then i ＆ lt pre-bending is carried out using the hydraulic rail bender；Wherein, i be positive integer and i=2,3,4 ..., n；
Now, the pushing tow jack is withstood on the inside of grooved rail to be bent and which is located at pre-bending point ai present positions；Work as i
=2,3,4 ..., n-1 when, two grooved rail holders of the hydraulic rail bender be clamped in respectively pre-bending point a (i-1) and
In pre-bending point a (i+1)；As i=n, two grooved rail holders of the hydraulic rail bender are clamped in pre-bending point a respectively
(i-1) and on grooved rail rear end to be bent；
Step 203, step 202 is repeated several times, until completing n pre-bending process.
The linear pre-bending construction method of above-mentioned tramcar grooved rail curve, is characterized in that：The hydraulic pressure of the pushing tow jack
Cylinder bottom portion is fixed on the inside of frame, and pushing tow jack is located in same level with grooved rail to be bent.
The linear pre-bending construction method of above-mentioned tramcar grooved rail curve, is characterized in that：N pre-bending is completed in step 203
After process, grooved rail after pre-bending is obtained；Afterwards, also need linear inspection to be carried out to grooved rail after the pre-bending, judge the pre-bending
Whether grooved rail is linear linear consistent with the design of grooved rail to be bent afterwards：After the pre-bending grooved rail linear with to be curved
When the design of crank slot type rail is linear consistent, the pre-bending process of grooved rail to be bent is completed；Otherwise, need to be according to step 201 to step
Method described in 203, grooved rail to be bent described to another carry out pre-bending, again to grooved after the pre-bending after the completion of pre-bending
Rail carries out linear inspection, until obtaining and grooved rail after the linear consistent pre-bending of the design of grooved rail to be bent；
Wherein, the design of grooved rail to be bent is linear for linear after the grooved rail pre-bending to be bent that is pre-designed.
The linear pre-bending construction method of above-mentioned tramcar grooved rail curve, is characterized in that：Crank slot to be curved described to another
Before type rail carries out pre-bending, need first to carrying out the pre-bending for carrying out pre-bending next time in first time pre-bending and step 202 in step 201
Parameter is adjusted；The pre-bending parameter is the jacking force of the bending deformation quantity and pushing tow jack of grooved rail to be bent.
The linear pre-bending construction method of above-mentioned tramcar grooved rail curve, is characterized in that：Grooved rail after the pre-bending is entered
When line shape is checked, N number of versed sine is measured on grooved rail from front to back after the pre-bending using the dimensional measuring instrument first
Point, and the N number of described versed sine point that measures is marked respectively；N number of versed sine point from front to back be respectively versed sine point A1,
Versed sine point A2 ..., versed sine point AN, the spacing between the two neighboring versed sine point is D, versed sine point A1 and the pre-bending pit
Spacing after spacing and versed sine point AN and the pre-bending between type rail front end between grooved rail rear end is respectively less than D, and wherein N is
Positive integer and N >=3, D=4m～6m；Afterwards, then using curve versine survey tool by elder generation to rear point N-2 time to the pre-bending after
Grooved rail carries out curve versine measurement, and the curve versine survey tool includes boom plate and the company of two block structures and size all same
The string of a musical instrument being connected between two pieces of boom plates, the boom plate is for straight board lath and the string of a musical instrument is bracing wire；The line of grooved rail after the pre-bending
Shape checking process is as follows：
Step I, the measurement of first time curve versine：The curve versine survey tool is positioned over grooved rail after the pre-bending
First time curve versine measurement position, and the curve using dimensional measuring instrument to versed sine point A2 on grooved rail after the pre-bending
Versed sine f1 is measured；
Now, two pieces of boom plates of the curve versine survey tool are respectively positioned on and abut against grooved rail after the pre-bending
On medial wall, two pieces of boom plates are located at versed sine point A1 and versed sine point A3 present positions respectively, and curve versine f1 is the pre-bending
Spacing on grooved rail between versed sine point A2 present positions and the string of a musical instrument afterwards；
Step II, next time curve versine measurement：The curve versine survey tool is moved to the pre-bending pit backward
The curve versine measurement position next time of type rail, and using the dimensional measuring instrument to versed sine point on grooved rail after the pre-bending
The curve versine fj of A (j+1) is measured；
Now, two pieces of boom plates of the curve versine survey tool are respectively positioned on and abut against grooved rail after the pre-bending
On medial wall, two pieces of boom plates are located at versed sine point Aj and versed sine point A (j+2) present position respectively, and curve versine fj is described
Spacing of versed sine point A (j+1) between present position and the string of a musical instrument on grooved rail after pre-bending；Wherein, j be positive integer and j=2,3,
4、…、N-2；
Step III, step II is repeated several times, until n times curve versine measurement process is completed, and after measuring the pre-bending
Versed sine point A2 on grooved rail, versed sine point A3 ..., the curve versine f1 of versed sine point A (N-1), f2 ..., f (N-2).
The linear pre-bending construction method of above-mentioned tramcar grooved rail curve, is characterized in that：Grooved rail after the pre-bending is entered
Line shape check before, also need the linear upper versed sine point A2 of the design for calculating grooved rail to be bent, versed sine point A3 ..., versed sine point A
(N-1) curve versine f1 ', f2 ' ..., f (N-2) '；
Judge grooved rail after the pre-bending linear whether linear consistent with the design of grooved rail to be bent when, judge measurement
The curve versine f1 that goes out, f2 ..., f (N-2) whether respectively with curve versine f1 ', f2 ' ..., f (N-2) ' consistent, and work as curve
Versed sine f1, f2 ..., f (N-2) respectively with curve versine f1 ', f2 ' ..., f (N-2) ' consistent when, grooved after the pre-bending is described
Rail linear linear consistent with the design of grooved rail to be bent.
The linear pre-bending construction method of above-mentioned tramcar grooved rail curve, is characterized in that：It is pre- that grooved rail is carried out in step 2
Before curved, first calculate the linear upper versed sine point A2 of design of grooved rail to be bent, versed sine point A3 ..., the song of versed sine point A (N-1)
Line versed sine f1 ', f2 ' ..., f (N-2) '；Wherein, the linear grooved rail to be bent for being pre-designed of the design of grooved rail to be bent
Linear after pre-bending；
When carrying out grooved rail pre-bending in step 2, according to the curved rail method of hydraulic pressure, and combine calculate curve versine f1 ',
F2 ' ..., f (N-2) ', treating bending grooved rail by elder generation for n time to rear point carries out pre-bending.
The linear pre-bending construction method of above-mentioned tramcar grooved rail curve, is characterized in that：Described in step 2, pushing tow is very heavy
Top is connected with the fluid pumping outlet of electric hydraulic oil pump by conduit under fluid pressure；The hydraulic rail bender is also included to pushing tow jack
Jacking force carry out jacking force detection and the display unit of real-time detection simultaneous display；
Before carrying out grooved rail pre-bending in step 2, first according to the curve versine f1 ', f2 ' for calculating ..., f (N-2) ',
The jacking force of pushing tow jack during n pre-bending is determined respectively；Carried out using the hydraulic rail bender in step 201
When carrying out i ＆ lt pre-bending using the hydraulic rail bender in first time pre-bending and step 202, according to predetermined jacking force
Value is treated bending grooved rail and carries out pre-bending.
The linear pre-bending construction method of above-mentioned tramcar grooved rail curve, is characterized in that：D=described in step one
500mm.
The linear pre-bending construction method of above-mentioned tramcar grooved rail curve, is characterized in that：Two grooved rail holders
With the spacing between pushing tow jack no more than d, by adjusting installation position of two grooved rail holders in frame
The length for putting or adjusting frame is adjusted respectively to the spacing between two grooved rail holders and pushing tow jack.
The present invention has advantages below compared with prior art：
1st, method and step is simple, reasonable in design and input construction cost is relatively low, and it is convenient to realize.
2nd, hydraulic rail bender simple structure, reasonable in design and processing and fabricating and the easy accessibility for being adopted, using operation letter
Just, operated according to the curved rail method of hydraulic pressure of conventional hydraulic rail bender, can have strong operability, technical difficulty low, and groove
Type rail pre-bending quality is easily controllable, and using effect is good.
3rd, the pre-bending method step that adopted is simple, reasonable in design and realizes that convenient, using effect is good, first using length survey
N pre-bending point measured from front to back on grooved rail to be bent by amount instrument, pre- further according to the grooved rail to be bent being pre-designed
Linear after curved, n time treating bending grooved rail by elder generation to rear point using hydraulic rail bender carries out pre-bending, can easy, be rapidly completed
Grooved rail pre-bending process, and pre-bending process is easily controllable, and grooved path shape control accuracy is content with very little and designs and test standard requirement.
During actual job, first according to curve element calculated curve versed sine value, while determining the gage pressure value of hydraulic rail bender.
4th, the linear inspection method step that adopted is simple, reasonable in design and realizes that convenient, using effect is good, using curve
Versed sine survey tool energy is easy, be rapidly completed grooved path shape checking process.
5th, using effect is good and practical value is high, there is provided a kind of tramcar grooved when sharp radius curve location is laid a railway track
The construction method of rail pre-bending, its pre- dactylogryposis prebend, and carry out pre-bending using hydraulic rail bender to grooved rail, disappear before track laying
Except the horizontal internal stress of grooved rail, solve conventional construction method and cannot meet the difficult problem that sharp radius curve location is laid a railway track, and meet and apply
Work is required so that the curve in tramcar sharp radius curve location is linear to be effectively ensured.Main process is as follows：Grooved rail
Pre-bending point is determined and labelling, pre-bending and pre-bending are carried out for n time using hydraulic rail bender minute after the completion of carry out linear inspection and (specifically examine
Look into curve versine value after grooved rail pre-bending).
6th, widely applicable, particularly suitable in the location application that track circuit sweep is less than 150 meters, with very wide
General application prospect.Also, the present invention is applied to the pre-bending process of 25 meters of standard channel rails and long rail string.
In sum, the inventive method step is simple, reasonable in design and good using easy to operate, using effect, before laying
In advance grooved rail is curved, the bending of grooved rail is linear easily controllable and can eliminate the horizontal internal stress of grooved rail, effectively can be solved
Certainly conventional rail framed bent rail method cannot meet the difficult problem that sharp radius curve location is laid a railway track.
Below by drawings and Examples, technical scheme is described in further detail.
Description of the drawings
Fig. 1 is method of the present invention FB(flow block).
Fig. 2 is the installation position schematic diagram of grooved rail pre-bending point of the present invention.
Fig. 3 is the schematic view of the mounting position of hydraulic rail bender of the present invention.
Fig. 4 is the use state schematic diagram of hydraulic rail bender of the present invention.
Fig. 5 is the use state schematic diagram that hydraulic rail bender of the present invention moves to next pre-bending position.
Fig. 6 is the inspection state schematic diagram of brake forming grooved rail curve versine of the present invention.
Description of reference numerals:
1 grooved rail to be bent；2-1 frames；2-2 pushing tow jack；
2-3 grooved rail holders；2-5 electric hydraulic oil pumps；2-6 pressure gauges；
2-7 pump switch valves；3-1 boom plates；The 3-2 strings of a musical instrument；
4 curve grooved rails.
Specific embodiment
A kind of linear pre-bending construction method of tramcar grooved rail curve as shown in Figure 1, comprises the following steps：
Step one, grooved rail pre-bending point are determined：In conjunction with Fig. 2, using dimensional measuring instrument from front to back in grooved to be bent
N pre-bending point is measured on rail 1, and the n pre-bending point that measures is marked respectively；The n pre-bending point is by front
To rear be respectively pre-bending point a1, pre-bending point a2 ..., pre-bending point an；Wherein, n is positive integer and n >=3；Pre-bending point a1 with to be bent
The spacing between spacing and the two neighboring pre-bending point between 1 front end of grooved rail is d, pre-bending point an and crank slot to be curved
Spacing≤d between 1 rear end of type rail；Wherein, d=400mm～600mm；
The grooved rail 1 to be bent is the straight grooved rail in horizontal layout；
Step 2, grooved rail pre-bending：Linear after according to 1 pre-bending of grooved rail to be bent being pre-designed, curved using hydraulic pressure
Rail device is treated bending grooved rail 1 by elder generation for n time to rear point and carries out pre-bending；The hydraulic rail bender include frame 2-1, one be arranged on
Two grooved rail holders for being symmetrically laid in pushing tow jack 2-2 both sides of pushing tow jack 2-2 and left and right on the inside of frame 2-1
2-3, is attached between two grooved rail holder 2-3 and frame 2-1 in hinged way；The grooved rail to be bent
1 pre-bending process is as follows：
Step 201, first time pre-bending：The first time pre-bending position that the hydraulic rail bender is installed on grooved rail 1 to be bent
Put, then first time pre-bending is carried out using the hydraulic rail bender, refer to Fig. 3 and Fig. 4；
Now, before two of the hydraulic rail bender grooved rail holder 2-3 are clamped in grooved rail 1 to be bent respectively
On end and pre-bending point a2, the pushing tow jack 2-2 is withstood on the inside of grooved rail 1 to be bent and which is located at position residing for pre-bending point a1
Put；
Step 202, next time pre-bending：The pre-bending next time that the hydraulic rail bender is moved to grooved rail 1 to be bent backward
Position, then i ＆ lt pre-bending is carried out using the hydraulic rail bender, refer to Fig. 5；Wherein, i be positive integer and i=2,3,4 ..., n；
Now, the pushing tow jack 2-2 is withstood on the inside of grooved rail 1 to be bent and which is located at position residing for pre-bending point ai
Put；When i=2,3,4 ..., n-1 when, two grooved rail holder 2-3 of the hydraulic rail bender are clamped in pre-bending respectively
On point a (i-1) and pre-bending point a (i+1)；As i=n, two grooved rail holder 2-3 difference of the hydraulic rail bender
It is clamped in pre-bending point a (i-1) and 1 rear end of grooved rail to be bent；
Step 203, step 202 is repeated several times, until completing n pre-bending process.
D=500mm in the present embodiment, described in step one.
During practice of construction, according to specific needs the value size of d can be adjusted accordingly.
In the present embodiment, the length of the grooved rail 1 to be bent is the integral multiple of d, thus pre-bending point an and crank slot to be curved
Spacing between 1 rear end of type rail is d.
In the present embodiment, the spacing between two grooved rail holder 2-3 and pushing tow jack 2-2 is d.
When actually used, the spacing between two grooved rail holder 2-3 and pushing tow jack 2-2 can also be carried out
Adjustment.Now, the spacing between two grooved rail holder 2-3 and pushing tow jack 2-2 is no more than d, by adjustment
The length of the installation site of two grooved rail holder 2-3 in frame 2-1 or adjustment frame 2-1 is to two grooveds
Spacing between rail holder 2-3 and pushing tow jack 2-2 is adjusted respectively.
Wherein, by adjusting installation sites of two grooved rail holder 2-3 in frame 2-1 to two grooves
When spacing between type rail holder 2-3 and pushing tow jack 2-2 is adjusted respectively, two in frame 2-1, are provided with
The hinged seat that installs for two grooved rail holder 2-3 respectively, thus by adjusting two hinged seats in frame 2-1
On installation site, spacing that just can be between easy grooved rail holder 2-3 and pushing tow jack 2-2 described to two enters respectively
Row adjustment.Between between the length for adjusting frame 2-1 grooved rail holder 2-3 and pushing tow jack 2-2 described to two
Away from when being adjusted respectively, frame 2-1 is the support body of adjustable in length.During actually used, bending grooved rail 1 is treated
When carrying out front n-1 pre-bending, the spacing between two grooved rail holder 2-3 and pushing tow jack 2-2 is d；Treat
When bending grooved rail 1 carries out front n-1 pre-bending, between the grooved rail holder 2-3 and pushing tow jack 2-2 of front side between
Away from for d, the spacing between the grooved rail holder 2-3 and pushing tow jack 2-2 of rear side and pre-bending point an and crank slot to be curved
Spacing between 1 rear end of type rail is identical.
In the present embodiment, after n pre-bending process is completed in step 203, obtain grooved rail after pre-bending；Afterwards, also need to institute
After stating pre-bending, grooved rail carries out linear inspection, and after judging the pre-bending, whether the linear of grooved rail is set with grooved rail 1 to be bent
Meter is linear consistent：When after the pre-bending grooved rail linear linear consistent with the design of grooved rail 1 to be bent when, complete to be bent
The pre-bending process of grooved rail 1；Otherwise, need to be described to another to be bent according to the method described in step 201 to step 203
Grooved rail 1 carries out pre-bending, carries out linear inspection to grooved rail after the pre-bending again after the completion of pre-bending, until obtaining and crank slot to be curved
Grooved rail after the linear consistent pre-bending of the design of type rail 1；
Wherein, the design of grooved rail 1 to be bent is linear for linear after 1 pre-bending of grooved rail to be bent that is pre-designed.
In the present embodiment, before grooved rail 1 to be bent described to another carries out pre-bending, need first to carrying out in step 201
The pre-bending parameter for carrying out pre-bending next time in first time pre-bending and step 202 is adjusted；The pre-bending parameter is crank slot to be curved
The bending deformation quantity of type rail 1 and the jacking force of pushing tow jack 2-2.
Also, the pre-bending parameter for carrying out carrying out in step 201 pre-bending next time in first time pre-bending and step 202 is carried out
During adjustment, the linear inspection result according to grooved rail after the pre-bending obtained by last pre-bending is adjusted.
As shown in fig. 6, in the present embodiment, when carrying out linear inspection to grooved rail after the pre-bending, first adopting the length
Survey tool measures N number of versed sine point, and the N number of described versed sine point to measuring from front to back after the pre-bending on grooved rail
It is marked respectively；N number of versed sine point from front to back be respectively versed sine point A1, versed sine point A2 ..., versed sine point AN, adjacent two
Spacing between the individual versed sine point is D, the spacing and versed sine after versed sine point A1 and the pre-bending between grooved rail front end
Spacing after point AN and the pre-bending between grooved rail rear end is respectively less than D, and wherein N is positive integer and N >=3, D=4m～6m；It
Afterwards, then using curve versine survey tool N-2 time curve versine measurement, institute are carried out to grooved rail after the pre-bending by elder generation to rear point
State curve versine survey tool include two block structures and size all same boom plate 3-1 and be connected to two pieces of boom plate 3-1 it
Between string of a musical instrument 3-2, it is bracing wire that the boom plate 3-1 is straight board lath and string of a musical instrument 3-2；The linear checking process of grooved rail after the pre-bending
As follows：
Step I, the measurement of first time curve versine：The curve versine survey tool is positioned over grooved rail after the pre-bending
First time curve versine measurement position, and the curve using dimensional measuring instrument to versed sine point A2 on grooved rail after the pre-bending
Versed sine f1 is measured；
Now, two pieces of the curve versine survey tool boom plate 3-1 are respectively positioned on and abut against grooved after the pre-bending
On the medial wall of rail, two pieces of boom plate 3-1 are located at versed sine point A1 and versed sine point A3 present positions respectively, and curve versine f1 is institute
State the spacing on grooved rail between versed sine point A2 present positions and string of a musical instrument 3-2 after pre-bending；
Step II, next time curve versine measurement：The curve versine survey tool is moved to the pre-bending pit backward
The curve versine measurement position next time of type rail, and using the dimensional measuring instrument to versed sine point on grooved rail after the pre-bending
The curve versine fj of A (j+1) is measured；
Now, two pieces of the curve versine survey tool boom plate 3-1 are respectively positioned on and abut against grooved after the pre-bending
On the medial wall of rail, two pieces of boom plate 3-1 are located at versed sine point Aj and versed sine point A (j+2) present position, curve versine fj respectively
For the spacing on grooved rail after the pre-bending between versed sine point A (j+1) present positions and string of a musical instrument 3-2；Wherein, j is positive integer and j
=2,3,4 ..., N-2；
Step III, step II is repeated several times, until n times curve versine measurement process is completed, and after measuring the pre-bending
Versed sine point A2 on grooved rail, versed sine point A3 ..., the curve versine f1 of versed sine point A (N-1), f2 ..., f (N-2).
In the present embodiment, D=5m.During practice of construction, according to specific needs the value size of D can be adjusted accordingly.
During practice of construction, the spacing after the versed sine point A1 and the pre-bending between grooved rail front end is not more than 0.5m.
In the present embodiment, before carrying out linear inspection to grooved rail after the pre-bending, also need to calculate grooved rail 1 to be bent
The linear upper versed sine point A2 of design, versed sine point A3 ..., the curve versine f1 ' of versed sine point A (N-1), f2 ' ..., f (N-2) '；
Judge grooved rail after the pre-bending linear whether linear consistent with the design of grooved rail 1 to be bent when, judge to survey
The curve versine f1 that measures, f2 ..., f (N-2) whether respectively with curve versine f1 ', f2 ' ..., f (N-2) ' consistent, and when song
Line versed sine f1, f2 ..., f (N-2) respectively with curve versine f1 ', f2 ' ..., f (N-2) ' consistent when, the pre-bending pit is described
Type rail linear linear consistent with the design of grooved rail 1 to be bent.
In the present embodiment, the curve versine f1 that judges to measure, f2 ..., f (N-2) whether respectively with curve versine f1 ',
F2 ' ..., f (N-2) ' consistent when, need be judged according to the range of error being pre-designed, when curve versine f1, f2 ..., f (N-
2) with curve versine f1 ', f2 ' ..., the deviation of f (N-2) ' in range of error set in advance when, the pre-bending pit is described
Type rail linear linear consistent with the design of grooved rail 1 to be bent.Otherwise, step 201 is needed to the method described in step 203,
Pre-bending is carried out to grooved rail after the pre-bending again, until the measured value of curve versine meets construction requirement and (is being pre-designed
Range of error in).
Railway curve versed sine is divided into the positive resultant of plan and measures versed sine, and the difference for planning positive resultant measurement versed sine is appraisal curve
The index of smoother degree.In the present embodiment, curve versine f1 ', f2 ' ..., f (N-2) ' for plan versed sine, curve versine f1,
F2 ..., f (N-2) for measurement versed sine.Wherein, the computational methods of plan versed sine are the conventional calculating side that curve plan is formally adopted
Method.
In the present embodiment, before carrying out grooved rail pre-bending in step 2, the design for first calculating grooved rail 1 to be bent is linear
Upper versed sine point A2, versed sine point A3 ..., the curve versine f1 ' of versed sine point A (N-1), f2 ' ..., f (N-2) '；Wherein, crank slot to be curved
The design of type rail 1 is linear for linear after 1 pre-bending of grooved rail to be bent that is pre-designed；
When carrying out grooved rail pre-bending in step 2, according to the curved rail method of hydraulic pressure, and combine calculate curve versine f1 ',
F2 ' ..., f (N-2) ', treating bending grooved rail 1 by elder generation for n time to rear point carries out pre-bending.
In the present embodiment, the 2-2 of pushing tow jack described in step 2 is by conduit under fluid pressure and the oil of electric hydraulic oil pump 2-5
Liquid pumping outlet connects；The hydraulic rail bender also includes carrying out the jacking force of pushing tow jack 2-2 real-time detection and synchronously showing
The jacking force detection that shows and display unit；
Before carrying out grooved rail pre-bending in step 2, first according to the curve versine f1 ', f2 ' for calculating ..., f (N-2) ',
The jacking force of pushing tow jack 2-2 during n pre-bending is determined respectively；The hydraulic rail bender is adopted in step 201
When carrying out carrying out i ＆ lt pre-bending using the hydraulic rail bender in first time pre-bending and step 202, according to predetermined top
Thrust magnitude is treated bending grooved rail 1 and carries out pre-bending.
In the present embodiment, the hydraulic cylinder bottom of the pushing tow jack 2-2 is fixed on the inside of frame 2-1, and pushing tow is very heavy
Top 2-2 is located in same level with grooved rail 1 to be bent.The piston rod front end of the pushing tow jack 2-2 is provided with push pedal
The perpendicular laying of the piston rod of 2-4, the push pedal 2-4 and pushing tow jack 2-2.
Also, the pushing tow jack 2-2 and the perpendicular laying of frame 2-1.
In the present embodiment, the jacking force detection and display unit are the pressure gauge 2- on pushing tow jack 2-2
6.
In the present embodiment, the grooved rail 1 to be bent is 60R2 grooved rails.
When carrying out grooved rail pre-bending point measure in step one, start from one end of grooved rail 1 to be bent and apart from rail end
The position mark of 500mm be pre-bending point a1, backward apart from pre-bending point a1 be 500mm position marks be pre-bending point a2, the like
Until being labeled as pre-bending point an.
Carry out in first time pre-bending and step 202, adopting the curved rail of the hydraulic pressure using the hydraulic rail bender in step 201
The pump switch valve 2-7 of electric hydraulic oil pump 2-5 when device carries out i ＆ lt pre-bending, is first opened, starts to give pushing tow jack 2-2
Pressurizeed, the numerical value of simultaneous observation pressure gauge 2-6 in pressure process, and in pushing tow jack 2-2 and grooved rail 1 to be bent
Contact surface between the wall of side carries out Real Time Observation, and treats what bending grooved rail 1 occurred under pushing tow jack 2-2 thrusting actions
Deformation is observed, and is pre-designed when the deformation of grooved rail to be bent 1 (specifically pushing tow jack 2-2 pushing tows position) reaches
During deformation quantity (corresponding to the plan versed sine of pre-bending point), the pump switch valve 2-7 for closing electric hydraulic oil pump 2-5 carries out pressurize,
Pressurize just completes this pre-bending process after terminating.After pre-bending terminates in step 2, the hydraulic rail bender is removed.
In the present embodiment, the curve versine survey tool is positioned over first of grooved rail after the pre-bending in step I
During secondary curve versine measurement position, string of a musical instrument 3-2 need to be stretched.In the present embodiment, the length of string of a musical instrument 3-2 is 2d.Will in step II
When the curve versine survey tool moves to the measurement position of curve versine next time of grooved rail after the pre-bending backward, by two pieces
The boom plate 3-1 is attached to the track slot edge on the inside of grooved rail 1 to be bent or rail side wall is moved respectively backward, manually tenses the string of a musical instrument
After 3-2, experiment curv versed sine.
In the present embodiment, after the pre-bending, grooved rail is curve grooved rail 4.
The above, is only presently preferred embodiments of the present invention, not the present invention is imposed any restrictions, every according to the present invention
Any simple modification, change and equivalent structure change that technical spirit is made to above example, still fall within skill of the present invention
In the protection domain of art scheme.
Claims (8)
1. the linear pre-bending construction method of a kind of tramcar grooved rail curve, it is characterised in that the method is comprised the following steps：
Step one, grooved rail pre-bending point are determined：Measured on grooved rail (1) to be bent using dimensional measuring instrument from front to back
N pre-bending point, and the n pre-bending point that measures is marked respectively；The n pre-bending point is respectively in advance from front to back
Curved point a1, pre-bending point a2 ..., pre-bending point an；Wherein, n is positive integer and n >=3；Before pre-bending point a1 and grooved rail (1) to be bent
The spacing between spacing and the two neighboring pre-bending point between end is d, behind pre-bending point an and grooved rail (1) to be bent
Spacing≤d between end；Wherein, d=400mm～600mm；
Grooved rail (1) to be bent is the straight grooved rail in horizontal layout；
Step 2, grooved rail pre-bending：Linear after according to grooved rail (1) the to be bent pre-bending being pre-designed, using the curved rail of hydraulic pressure
Device is treated bending grooved rail (1) by elder generation for n time to rear point and carries out pre-bending；The hydraulic rail bender includes frame (2-1), an installation
Two grooveds for being symmetrically laid in pushing tow jack (2-2) both sides of pushing tow jack (2-2) and left and right on the inside of frame (2-1)
Rail holder (2-3), is attached between two grooved rail holder (2-3) and frame (2-1) in hinged way；Institute
The pre-bending process for stating grooved rail (1) to be bent is as follows：
Step 201, first time pre-bending：The first time pre-bending position that the hydraulic rail bender is installed on grooved rail (1) to be bent,
First time pre-bending is carried out using the hydraulic rail bender again；
Now, before two of the hydraulic rail bender grooved rail holder (2-3) are clamped in grooved rail (1) to be bent respectively
On end and pre-bending point a2, pushing tow jack (2-2) withstands on the inside of grooved rail (1) to be bent and which is located at pre-bending point a1 institutes
Place position；
Step 202, next time pre-bending：The pre-bending position next time that the hydraulic rail bender is moved to grooved rail (1) to be bent backward
Put, then i ＆ lt pre-bending is carried out using the hydraulic rail bender；Wherein, i be positive integer and i=2,3,4 ..., n；
Now, pushing tow jack (2-2) is withstood on the inside of grooved rail (1) to be bent and which is located at position residing for pre-bending point ai
Put；When i=2,3,4 ..., n-1 when, two grooved rail holder (2-3) of the hydraulic rail bender are clamped in pre- respectively
On curved point a (i-1) and pre-bending point a (i+1)；As i=n, two grooved rail holder (2-3) of the hydraulic rail bender
It is clamped in pre-bending point a (i-1) and grooved rail to be bent (1) rear end respectively；
Step 203, step 202 is repeated several times, until completing n pre-bending process；
After n pre-bending process is completed in step 203, obtain grooved rail after pre-bending；Afterwards, also need to enter grooved rail after the pre-bending
Line shape checks, judges the linear whether linear consistent with the design of grooved rail (1) to be bent of grooved rail after the pre-bending：Work as institute
State grooved rail after pre-bending linear linear consistent with the design of grooved rail (1) to be bent when, complete the pre- of grooved rail (1) to be bent
Bend through journey；Otherwise, need to be according to the method described in step 201 to step 203, grooved rail (1) to be bent described to another is entered
Row pre-bending, carries out linear inspection to grooved rail after the pre-bending after the completion of pre-bending again, until obtaining and grooved rail (1) to be bent
Grooved rail after the linear consistent pre-bending of design；
Wherein, the design of grooved rail (1) to be bent is linear for linear after grooved rail (1) to be bent pre-bending for being pre-designed；
When carrying out linear inspection to grooved rail after the pre-bending, first using the dimensional measuring instrument from front to back in the pre-bending
Measure N number of versed sine point afterwards on grooved rail, and the N number of described versed sine point that measures is marked respectively；N number of versed sine point
Be respectively from front to back versed sine point A1, versed sine point A2 ..., versed sine point AN, the spacing between the two neighboring versed sine point is
Grooved rail rear end after D, the spacing and versed sine point AN after versed sine point A1 and the pre-bending between grooved rail front end and the pre-bending
Between spacing be respectively less than D, wherein N is positive integer and N >=3, D=4m～6m；Afterwards, then using curve versine survey tool by
First curve versine measurement is carried out to grooved rail after the pre-bending N-2 time to rear point, the curve versine survey tool includes two pieces
The boom plate (3-1) of structure and size all same and the string of a musical instrument (3-2) being connected between two pieces boom plate (3-1), the boom plate
(3-1) it is bracing wire for straight board lath and the string of a musical instrument (3-2)；After the pre-bending, the linear checking process of grooved rail is as follows：
Step I, the measurement of first time curve versine：That the curve versine survey tool is positioned over grooved rail after the pre-bending
Curve versine measurement position, and the curve versine using dimensional measuring instrument to versed sine point A2 on grooved rail after the pre-bending
F1 is measured；
Now, two pieces of the curve versine survey tool boom plate (3-1) are respectively positioned on and abut against grooved rail after the pre-bending
Medial wall on, two pieces boom plate (3-1) is located at versed sine point A1 and versed sine point A3 present positions respectively, and curve versine f1 is institute
State the spacing on grooved rail between versed sine point A2 present positions and the string of a musical instrument (3-2) after pre-bending；
Step II, next time curve versine measurement：The curve versine survey tool is moved to grooved rail after the pre-bending backward
Curve versine measurement position next time, and using the dimensional measuring instrument to versed sine point A (j+ on grooved rail after the pre-bending
1) curve versine fj is measured；
Now, two pieces of the curve versine survey tool boom plate (3-1) are respectively positioned on and abut against grooved rail after the pre-bending
Medial wall on, two pieces boom plate (3-1) is located at versed sine point Aj and versed sine point A (j+2) present position, curve versine fj respectively
For the spacing on grooved rail after the pre-bending between versed sine point A (j+1) present positions and the string of a musical instrument (3-2)；Wherein, j is positive integer
And j=2,3,4 ..., N-2；
Step III, step II is repeated several times, until completing N-2 curve versine measurement process, and measures the pre-bending pit
Versed sine point A2 on type rail, versed sine point A3 ..., the curve versine f1 of versed sine point A (N-1), f2 ..., f (N-2).
2. according to the linear pre-bending construction method of tramcar grooved rail curve described in claim 1, it is characterised in that：The top
The hydraulic cylinder bottom for pushing away jack (2-2) is fixed on the inside of frame (2-1), and pushing tow jack (2-2) and grooved rail to be bent
(1) it is located in same level.
3. according to the linear pre-bending construction method of tramcar grooved rail curve described in claim 1, it is characterised in that：To another
Before described in root, grooved rail (1) to be bent carries out pre-bending, need first to carrying out entering in first time pre-bending and step 202 in step 201
The pre-bending parameter of row pre-bending next time is adjusted；Bending deformation quantity and top of the pre-bending parameter for grooved rail (1) to be bent
Push away the jacking force of jack (2-2).
4. according to the linear pre-bending construction method of tramcar grooved rail curve described in claim 1, it is characterised in that：To described
Before grooved rail carries out linear inspection after pre-bending, the linear upper versed sine point A2 of the design for calculating grooved rail (1) to be bent, just is also needed
Arrow point A3 ..., the curve versine f1 ' of versed sine point A (N-1), f2 ' ..., f (N-2) '；
Judge grooved rail after the pre-bending linear whether linear consistent with the design of grooved rail (1) to be bent when, judge measurement
The curve versine f1 that goes out, f2 ..., f (N-2) whether respectively with curve versine f1 ', f2 ' ..., f (N-2) ' consistent, and work as curve
Versed sine f1, f2 ..., f (N-2) respectively with curve versine f1 ', f2 ' ..., f (N-2) ' consistent when, grooved after the pre-bending is described
Rail linear linear consistent with the design of grooved rail (1) to be bent.
5. according to the linear pre-bending construction method of tramcar grooved rail curve described in claim 1 or 2, it is characterised in that：Step
Before grooved rail pre-bending is carried out in rapid two, first calculate the linear upper versed sine point A2 of design, the versed sine point of grooved rail (1) to be bent
A3 ..., the curve versine f1 ' of versed sine point A (N-1), f2 ' ..., f (N-2) '；Wherein, the design of grooved rail (1) to be bent is linear
For linear after grooved rail (1) to be bent pre-bending for being pre-designed；
When carrying out grooved rail pre-bending in step 2, according to the curved rail method of hydraulic pressure, and combine calculate curve versine f1 ',
F2 ' ..., f (N-2) ', treating bending grooved rail (1) by elder generation for n time to rear point carries out pre-bending.
6. according to the linear pre-bending construction method of tramcar grooved rail curve described in claim 5, it is characterised in that：Step 2
Described in pushing tow jack (2-2) be connected with the fluid pumping outlet of electric hydraulic oil pump (2-5) by conduit under fluid pressure；The hydraulic pressure
Jim crow also includes the jacking force detection and display for carrying out real-time detection simultaneous display to the jacking force of pushing tow jack (2-2)
Unit；
Before carrying out grooved rail pre-bending in step 2, first according to the curve versine f1 ', f2 ' for calculating ..., f (N-2) ', to n time
During pre-bending, the jacking force of pushing tow jack (2-2) is determined respectively；Carried out using the hydraulic rail bender in step 201
When carrying out i ＆ lt pre-bending using the hydraulic rail bender in first time pre-bending and step 202, according to predetermined jacking force
Value is treated bending grooved rail (1) and carries out pre-bending.
7. according to the linear pre-bending construction method of tramcar grooved rail curve described in claim 1 or 2, it is characterised in that：Step
D=500mm described in rapid one.
8. according to the linear pre-bending construction method of tramcar grooved rail curve described in claim 1 or 2, it is characterised in that：Two
Spacing between individual grooved rail holder (2-3) and pushing tow jack (2-2) no more than d, described in adjusting two
The length of installation site of grooved rail holder (2-3) in frame (2-1) or adjustment frame (2-1) is to two grooved rails
Spacing between holder (2-3) and pushing tow jack (2-2) is adjusted respectively.
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| CN107175277B (en) * | 2016-03-11 | 2020-11-03 | 深圳光启高等理工研究院 | Method for processing meter wave antenna surface |
| CN116000144A (en) * | 2022-12-30 | 2023-04-25 | 中铁五局集团路桥工程有限责任公司 | Tramcar groove rail small-radius curve pre-bending method |
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| DE540145C (en) * | 1931-12-08 | Schwaebische Huettenwerke Gmbh | Rail bending device | |
| US3337131A (en) * | 1964-10-26 | 1967-08-22 | Lutillus L S Nelson | Mud rail |
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Effective date of registration: 20180111 Address after: The northern section of Shaanxi city of Xi'an province 710054 Yanta Road No. 1 Co-patentee after: Xinyun Engineering Co., Ltd., Zhongtie No.1 Bureau Group Patentee after: Zhongtie No.1 Bureau Group Co., Ltd. Address before: The northern section of Shaanxi city of Xi'an province 710054 Yanta Road No. 1 Patentee before: Zhongtie No.1 Bureau Group Co., Ltd. |