CN109990765B - Linear open slot track levelness tester - Google Patents
Linear open slot track levelness tester Download PDFInfo
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- CN109990765B CN109990765B CN201910228895.7A CN201910228895A CN109990765B CN 109990765 B CN109990765 B CN 109990765B CN 201910228895 A CN201910228895 A CN 201910228895A CN 109990765 B CN109990765 B CN 109990765B
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- 238000005259 measurement Methods 0.000 claims description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 14
- 238000003825 pressing Methods 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 11
- 238000012360 testing method Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 239000000523 sample Substances 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 3
- 238000013459 approach Methods 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims description 2
- 239000000428 dust Substances 0.000 claims description 2
- 238000010998 test method Methods 0.000 claims 10
- 230000008020 evaporation Effects 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 abstract 2
- 238000009434 installation Methods 0.000 description 12
- 230000008859 change Effects 0.000 description 6
- 241000446313 Lamella Species 0.000 description 3
- 241001422033 Thestylus Species 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
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- A Measuring Device Byusing Mechanical Method (AREA)
- Machines For Laying And Maintaining Railways (AREA)
Abstract
The invention provides a straight line open slot track levelness tester, which comprises a base, two magnetic gauge stand and a measuring assembly, wherein the magnetic gauge stand can be positioned on a track surface after penetrating through the base, the lower end surface of the magnetic gauge stand protrudes out of the bottom surface of the base, a rear top plate is arranged below one end of the base, a movable top plate is arranged on the rear top plate and is connected with the rear top plate through a rotating shaft, a track locking screw for supporting the movable top plate is arranged at the bottom of the rear top plate, and a positioning baffle is arranged below the middle part of the base; the measuring assembly comprises a measuring meter supporting rod arranged at the other end of the base and a measuring meter arranged at the top end of the measuring meter supporting rod, a fine adjusting device is arranged below the measuring head of the measuring meter and connected with one end of a fixing plate after penetrating through the base, and the other end of the fixing plate is connected with a measuring needle. The horizontal degree tester for the linear open-slot track provided by the invention takes the horizontal plane in the communicating slot as a horizontal reference, and can accurately measure the height deviation of each measuring point of the track relative to the horizontal plane reference.
Description
Technical Field
The invention belongs to the technical field of hydrologic equipment detection, and relates to a linear open channel track levelness tester.
Background
In the hydrologic field, the instrument equipment is from the production process to laboratory detection, to standard use, to later operation maintenance, calibration verification, all need calibrating installation and standard, standard to retrain. The track installation accuracy required by SL/T21699-2008 'method for calibrating rotor-type flow rate meter in straight open channel', is shown in Table 1, in order to make the calibrating vehicle run on the track smoothly, the working surface of the track should be kept clean and rust-free, the installation accuracy requires higher requirements, the track should be straight along the length direction of the calibrating channel, the top surface of the track should be parallel to the horizontal plane, and any side surfaces of the two track tops should be parallel to each other; the rail joints should be smooth and straight, and the specific installation accuracy values should meet the corresponding grade requirements in table 1. The primary precision requirement is suitable for the water tanks of hydrologic instrument quality inspection and test centers, scientific research institutions and instrument manufacturers.
Table 1 track mounting accuracy in mm
For a long time, the water conservancy portion basin rail surface levelness is measured and is usually used the spirit level, in order to cooperate the measurement of spirit level, still need erect the measurement auxiliary member on the track, need the manual scale mark of describing, because spirit level self precision limit, and when using this technique on the long water tank, still need not stop moving the position of spirit level and implement the measurement by stage, the auxiliary member is measured once every time the displacement in the middle, reset just causes an error, and in the operation use of spirit level, the factor of people influences greatly. The levelness measurement of the track is difficult to ensure, and the measurement workload is large. And the operation can be performed only by matching a plurality of people, which is time-consuming and labor-consuming. Therefore, the development of a levelness measuring instrument with reliable measuring principle, simple and convenient operation and high measuring precision is urgently needed at present, and the industrial problem of accurate measuring of the levelness of the top surface of the linear open groove track is solved.
Disclosure of Invention
In order to solve the problems, the invention provides a linear open groove track levelness tester which can accurately measure track levelness.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a straight line open groove track levelness tester, which comprises a base, two magnetism gauge stand, measuring assembly, be provided with two square holes on the base, the magnetism gauge stand passes the square hole in the base and fixes on the base after, and its lower terminal surface is outstanding in the base bottom surface, the back roof is installed to the terminal surface under base one end, be equipped with movable roof on the back roof, movable roof passes through the rotation axis and is connected with the back roof, the track locking screw that is used for propping up movable roof is installed to back roof bottom, the terminal surface middle part is provided with the locating baffle under the base, have the space that is used for holding the track top between movable roof and the locating baffle; the measuring assembly comprises a measuring meter supporting rod arranged at the other end of the base and a measuring meter arranged at the top end of the measuring meter supporting rod, a fine adjusting device is arranged below a measuring head of the measuring meter, the measuring head is contacted with the top of the fine adjusting device, the fine adjusting device penetrates through the base and then is connected with one end of a fixing plate, and the other end of the fixing plate is connected with a measuring needle.
Further, the micromatic setting includes measuring rod frame, measuring rod axle, three lamella clamp plates, pressure spring cover, contact nut, pressure spring, fine setting cap, guide screw soon, the measuring rod frame is installed on the base, the measuring rod axle sets up in the measuring rod frame and passes the base, contact nut sets up at measuring rod axle top, the gauge head touches with contact nut, three lamella clamp plates are installed at measuring rod frame top periphery, fine setting cap sets up in three lamella clamp plates top, fine setting nut passes through threaded connection with the measuring rod axle, the pressure spring sets up outside the measuring rod axle, the pressure spring cover sets up in pressure spring top, fine setting cap below soon.
Further, a gap is formed between the magnetic gauge stand and the inner surface of the square hole of the base.
Furthermore, the magnetic gauge stand is placed in a magnetic circuit switching-on state before the track locking screw is locked, so that accurate positioning is facilitated.
Further, the measuring table is a dial indicator.
Further, the water tank also comprises a communication groove, wherein the communication groove is used for containing water.
Further, the communication groove is annular.
Further, the cushion adjusting pillow comprises a base, a cushion pillow arranged on the base, a pressing plate arranged on the cushion pillow, a plurality of transverse adjusting screws and a plurality of longitudinal adjusting screws; the bolster is used for supporting the track, and horizontal adjusting screw passes the base and supports the bolster for adjust the bolster horizontal position, and vertical adjusting screw supports on the base after passing the bolster, is used for adjusting the bolster height, and the clamp plate passes through the hold-down screw to be fixed on the bolster, is used for compressing tightly track bottom on the bolster.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the linear open groove track levelness tester provided by the invention takes the horizontal plane in the communicating groove as a horizontal reference, takes a certain position of the track as a reference position, takes the horizontal plane from the track top surface at the position to the inside of the communicating groove as a reference value, and then measures the change quantity of the distance from the track top surface to the horizontal plane at other positions relative to the reference value, thus obtaining the change quantity of the level height difference of the track top surface. The invention can accurately measure the height deviation of each measuring point of the track relative to the horizontal plane reference, the measuring range is 0-10 mm, the resolution is 0.01mm, and the reading accuracy is 0.005-0.008 mm. The method is particularly suitable for measurement occasions of requirements on track installation precision in the industry standard SL/T21699-2008 'method for calibrating rotor type flow velocity meter in straight line open groove', meets the requirements on track installation precision, and can be used for similar track operation occasions.
Drawings
FIG. 1 is a schematic elevation view of the mounting structure of the track levelness tester of the present invention.
FIG. 2 is a schematic plan view of the mounting structure of the track levelness tester of the present invention.
FIG. 3 is a plan view of the body of the track levelness tester of the present invention.
Fig. 4 is a detail view of the cross-sectional structure taken along A-A in fig. 3.
Fig. 5 is a detail view of the cross-sectional structure taken along B-B in fig. 3.
Reference numerals illustrate:
the device comprises a transverse adjusting screw, a 2-pad pillow adjusting component, a 3-longitudinal adjusting screw, a 4-track locking screw, a 5-rear top plate, a 6-movable top plate, a 7-magnetic gauge stand, an 8-track, a 9-positioning baffle, a 10-dial gauge support rod, an 11-dial gauge, a 12-fine adjustment screw cap, a 13-guide screw, a 14-fixed plate, a 15-measuring needle, a 16-communication groove, a 17-base, a 18, a 19-horizontal long bubble device, a 20-measuring rod frame, a 21-nut, a 22-three-flap pressing plate, a 23-pressure spring sleeve, a 24-contact nut, a 25-measuring rod shaft, a 26-pressure spring, a 27-pad pillow, a 28-pressing plate and a 29-base.
Detailed Description
The following detailed description of the present invention will be provided in connection with the specific embodiments, which should be understood as being merely illustrative of the present invention and not limiting the scope of the invention.
In order to meet the requirement of rail installation accuracy, a set of accurate levelness tester is needed to ensure the rail installation accuracy. The track base adjusting device is matched for periodically measuring and adjusting the track installation accuracy, and a text record or a drawing test chart is used as a technical file for storage. In addition, the distance between the two bases (i.e. the cushion and pillow adjusting parts) should be designed scientifically, and the distance should be determined according to the weight of the vehicle and the type of the steel rail.
As shown in fig. 1, the track levelness tester provided by the invention comprises a track measurement assembly, a cushion pillow component 2 and a communication groove 16. The track measurement assembly is a main component, the cushion pillow adjusting component is used for fixing and adjusting the track, and the communication groove is used for providing a measurement reference surface.
The cushion and pillow component 2 is used for fixing and adjusting a track and comprises a base 29, a cushion pillow 27 arranged on the base, a pressing plate 28 arranged on the cushion pillow, a transverse adjusting screw 1 and a longitudinal adjusting screw 3, and the cushion pillow is arranged below the track. The cushion and pillow member 2 may be a single cushion and pillow member or a double cushion and pillow member as shown in fig. 2. The cushion and pillow parts should be provided with a plurality of groups, each group is respectively adjusted to ensure that the whole track meets the requirements in SL/T21699-2008 standard. Taking the single cushion pillow component as an example in fig. 2, the transverse adjusting screws are respectively provided with 4 groups, and the transverse adjusting screws penetrate through the side surfaces of the cushion pillow component to abut against the cushion pillow for adjusting the left and right positions of the cushion pillow, thereby adjusting the straightness position of the 50-type track 8. The longitudinal adjusting screws are respectively provided with 4 groups, and the longitudinal adjusting screws penetrate through the bolster and are propped against the base, and the height of the bolster can be adjusted when the longitudinal adjusting screws are rotated, so that the vertical height difference position of the 50-type track 8 is adjusted, and the levelness requirement is met. The transverse adjusting screw and the longitudinal adjusting screw are both structures with nuts arranged on the screws, and when the screws rotate in place, the locking nuts are fixed. The pressing plate fixes the track on the bolster and the base through the compression screw. After the track is arranged on the cushion adjusting pillow component, the transverse adjusting screw and the longitudinal adjusting screw are adjusted to adjust the track to be horizontal, and after the adjustment is finished, the pressing screw is screwed down, so that the pressing plate presses the bottom of the track on the cushion pillow.
As shown in fig. 1-3, the track measurement assembly comprises a base 17, two magnetic gauge stand 7 and measurement assemblies, wherein two sets of square holes matched with the magnetic gauge stand are arranged on the base 17, the two magnetic gauge stand 7 respectively penetrate through the two sets of square holes and are fixed on the base through screws, and the lower end face of the magnetic gauge stand protrudes out of the bottom face of the base 17 by 0.7mm. As shown in fig. 5, in the manufacturing and assembling process, the magnetic gauge stand 7 and the base 17 are assembled, the surface a is machined so that the surface a protrudes 0.7mm from the bottom surface of the base 17, and other parts are assembled after the completion. One side of the magnetic gauge stand and the inner side of the square hole of the base are provided with a certain space, so that the on-off switch of the magnetic gauge stand 7 can be flexibly pulled, and the phenomenon of blocking is avoided. The lower terminal surface of base one end is installed back roof 5, and the back roof is L shape, and movable roof 6 is equipped with to its one end, and movable roof passes through the rotation axis and is connected with the back roof, and track locking screw 4 is installed to back roof bottom, and terminal surface middle part is provided with positioning baffle 9 under the base, and the track top is fixed promptly between positioning baffle and movable roof. The track locking screw 4, the movable top plate 6 and the positioning baffle 9 play a role in jointly locking the track levelness tester, the track locking screw 4 is screwed, the movable top plate 6 is tightly pressed on the lower flange of the track 8 in a rotating mode around the axis, the flange on the other side of the track 8 is tightly pressed by the positioning baffle 9, and meanwhile the magnetic gauge stand 7 is placed in a magnetic circuit connection state before being locked, so that the functions of positioning and locking are achieved, and the levelness tester is tightly attached to the rail surface. The upper end surface of the base 17 is also provided with two mutually perpendicular horizontal long bubble devices (18, 19).
The measuring assembly comprises a dial indicator support rod 10 arranged at the other end of the base and a dial indicator 11 arranged at the top end of the dial indicator support rod. The dial indicator support rod 10 is fixed on the base through a nut 21, a fine adjustment device is arranged below the measuring head of the dial indicator 11, and the measuring head is contacted with the top of the fine adjustment device. Other measuring instruments such as dial indicators can also be used as the dial indicator. The fine tuning device penetrates through the base and is connected with one end of the fixed plate 14, and the other end of the fixed plate is connected with the measuring needle 15. As shown in fig. 4, the fine tuning device comprises a measuring rod frame 20, a measuring rod shaft 25, a three-flap pressing plate 22, a pressure spring sleeve 23, a contact nut 24, a pressure spring 26, a fine tuning screw cap 12 and a guide screw 13. The measuring rod frame 20 is arranged on a base, the inside of the measuring rod frame is hollow, the measuring rod shaft 25 is arranged in the measuring rod frame 20 and penetrates through the base, the contact nut 24 is arranged on the top of the measuring rod shaft 25, and the dial indicator measuring head is contacted with the contact nut 24. The three-flap press plate 22 is mounted on the periphery of the top of the measuring rod frame 20, and the fine tuning screw cap 12 is arranged above the three-flap press plate 22. The fine adjustment nut is in threaded connection with the measuring rod shaft, the pressure spring 26 is arranged outside the measuring rod shaft, the pressure spring sleeve 23 is arranged above the pressure spring 26 and below the fine adjustment screw cap 12, and the measuring rod shaft 25 can be accurately moved up and down by manually rotating the fine adjustment screw cap 12, so that the height of the measuring needle can be accurately and freely adjusted. The stylus 15 can be firstly coarse-tuned to the stylus to contact the water surface through the top threads, then the stylus is accurately tuned in place through the fine-tuning screw cap 12, and the small pointer of the dial indicator 11 is pre-pressed to the measuring range 5 mm to perform preparation work before measurement, and the preset position is 0 bit.
The communicating groove 16 is a groove body surrounding the outer side of the long water groove for a circle, water needs to be injected into the communicating groove to 2/3 of the height during testing, the height of the water level in the communicating groove is consistent, and the measuring needle 15 is contacted with the water level in the communicating groove 16 during measurement. Track measurement and adjustment work is completed through fine adjustment of the pillow parts of the two side pads, and the track measurement assembly in the track levelness tester needs to be firmly fixed on the 50-type track 8.
The invention takes the water level in the communication groove near the track as a reference, and takes a certain position of the track as a reference position, the distance from the top surface of the track at the position to the water level in the communication groove is a reference value Ho, then the change delta H (delta H=Hi-Ho) of the distance Hi between the top surface of the track at each other position and the water level relative to the reference value Ho is measured, the change delta H of the level difference delta H (delta H=delta H) of the top surface of the track is obtained, the change delta H is expressed by the distance value of the measuring needle relative to the water level, and the specific data of the distance value is measured by a dial indicator. After a period of measurement, the water in the communicating groove can evaporate, and the reference water surface can change, so that the reference value Ho after a period of measurement needs to be determined once again, and the measurement accuracy of the whole long track is ensured. The method realizes the purposes of reliable track surface levelness measurement principle, simple and convenient operation and high measurement precision.
When the track levelness tester is used, preparation work is completed sequentially, a datum point is selected for testing, the tester is moved to each measuring point for measurement, and finally data processing is carried out. Specifically, the test was performed by the following steps:
1. preparation work
(1) Cleaning the inner side of the communicating groove (the width of the communicating groove is more than or equal to 100 mm)
(2) Injecting water into the communicating groove to make the water surface reach 2/3 of the depth of the groove
(3) After the water is calm for 2-3 hours, the water level is calm without waves and dust, and the measuring work can be started.
(4) Opening the instrument box, taking out the instrument, and assembling the measuring needle and the dial indicator by comparing the vertical schematic diagram of the installation structure of the track levelness tester of the invention in fig. 1 with the plan schematic diagram of the installation structure of the track levelness tester of the invention in fig. 2.
(5) And wiping the working surface of the rail to be tested.
2. The position of a steel rail datum point is selected, a magnetic instrument seat of the track levelness tester is sucked at the position, a dial indicator is locked, the regulating disc is rotated to enable the probe to slowly approach the water surface, dial indicator data are read at the moment that the probe contacts the water surface, and the datum adjustment is completed (repeated reading is needed sometimes). The tester is used as a reference instrument and is placed at the position during the measurement process. And then another track levelness tester is arranged next to the reference instrument. The same state as the reference instrument is adjusted according to the method, and the tester is used for measurement. Note that only the fine tuning screw cap 12 is adjustable during the whole measurement process, the measurement point of the magnetic gauge stand 7 on the rail surface 8 is movable, and other adjustment is not allowed uniformly.
3. The track levelness tester is moved to each measuring point for measurement, firstly, the magnetic base of the tester is sucked on the top surface of the track of the measuring point, after the base 17 is placed on a steel rail, the magnetic switch is turned on for positioning, the movable top plate 6 and the positioning baffle 9 are used for reliable clamping, the measuring needle is vertical to the horizontal plane of the communicating groove, the regulating disc is rotated to enable the measuring needle to contact the water surface, the dial indicator reading is read, and data are recorded along with time.
4. After the measurement work of each measurement point is finished, data processing is also required:
the formula is that the measurement point reading- (datum point reading-evaporation amount x measurement time) =the height deviation of the measurement point from the horizontal datum plane
Namely: x+mt-xo=Δh
X (mm) -measurement point reading
Xo (mm) -reference point reading
M (mm/h) -evaporation amount
T (h) -measuring time
Δh- -the height deviation of each measurement point from the horizontal
Δh is greater than zero, indicating that the measurement point orbital top plane is lower than the reference point orbital top plane,
Δh is less than zero, indicating that the measurement point orbital top plane is higher than the reference point orbital top plane.
The track levelness tester has high measurement precision, the resolution is 0.01mm, and the reading precision reaches 0.005-0.008 mm. The dial 11 is manually placed in the illustrated position and secured with the dial rod 10, and is mounted in the illustrated position in use and allowed to be removed when not in use. Other components do not allow disassembly, which would otherwise affect the accuracy of the instrument measurement. After the instrument measurement is completed, the instrument should be cleaned up and stored in a special instrument box for proper preservation.
The track levelness tester is simple to install, labor-saving and time-saving, and the dial indicator and the measuring needle are detachable when not used, so that the tester is convenient to store and maintain. The method is particularly suitable for measuring occasions with high requirements on track installation accuracy in the method for calibrating the rotor type flow velocity meter in the straight open groove, and can also be used for similar track running occasions. The measuring principle is reliable, the measuring precision is high, the track measurement and adjustment are convenient, and the measuring efficiency is high.
The technical means disclosed by the scheme of the invention is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (7)
1. A testing method of a straight line open slot track levelness tester is characterized by comprising the following steps of: the straight line open groove track levelness tester includes: the magnetic gauge stand passes through the square holes in the base and then is fixed on the base, the lower end face of the magnetic gauge stand protrudes out of the bottom face of the base, a rear top plate is mounted on the lower end face of one end of the base, a movable top plate is mounted on the rear top plate and is connected with the rear top plate through a rotating shaft, a track locking screw for supporting the movable top plate is mounted at the bottom of the rear top plate, a positioning baffle is arranged in the middle of the lower end face of the base, and a space for accommodating the top of the track is formed between the movable top plate and the positioning baffle; the measuring assembly comprises a measuring meter supporting rod arranged at the other end of the base and a measuring meter arranged at the top end of the measuring meter supporting rod, a fine adjustment device is arranged below a measuring head of the measuring meter, the measuring head is contacted with the top of the fine adjustment device, the fine adjustment device penetrates through the base and then is connected with one end of a fixing plate, and the other end of the fixing plate is connected with the top of a measuring needle through threads; the fine adjustment device comprises a measuring rod frame, a measuring rod shaft, three-petal pressing plates, a pressure spring sleeve, a contact nut, a pressure spring, a fine adjustment screw cap and a guide screw, wherein the measuring rod frame is arranged on a base;
the linear open slot track levelness tester is tested by the following steps:
1) Preparation work
(1) Cleaning the inner side of the communicating groove, wherein the width of the communicating groove is more than or equal to 100mm;
(2) Injecting water into the communicating groove to enable the water surface to reach 2/3 of the depth of the groove;
(3) After the water is calm for 2 to 3 hours, the water level is calm without waves and dust, and the measuring work can be started;
(4) Opening an instrument box, taking out the instrument, and installing a measuring needle and a dial indicator;
(5) Wiping the working surface of the rail to be tested;
2) Selecting a reference point position of a steel rail, sucking a magnetic instrument seat of a track levelness tester at the position, locking a dial indicator, rotating an adjusting disc to enable a probe to slowly approach the water surface, and reading dial indicator data at the moment that the probe contacts the water surface, and sometimes, repeatedly reading for several times, so that reference adjustment is completed; the tester is used as a reference instrument and is placed at the position in the measuring process; then another track levelness tester is arranged next to the reference instrument; the same state as the reference instrument is adjusted according to the steps, and the tester is used for measurement;
3) Moving a track levelness tester to each measuring point for measurement, firstly sucking a magnetic base of the tester on the top surface of a track of the measuring point, placing a base on a steel rail, then switching on a magnetic switch for positioning, reliably clamping through a movable top plate and a positioning baffle plate to enable a measuring needle to be vertical to the horizontal plane of a communicating groove, rotating an adjusting disk to enable the measuring needle to contact the water surface, reading a dial indicator, and recording data along with time;
4) After the measurement work of each measurement point is finished, data processing is also required:
the formula is that the measurement point reading- (datum point reading-evaporation amount x measurement time) =the height deviation of the measurement point from the horizontal datum plane
Namely: x+mt-xo=Δh
Wherein X is the reading of a measuring point, xo is the reading of a datum point, M is the evaporation capacity, T is the measuring time, and Deltah is the height deviation of each measuring point to the horizontal plane;
Δh is greater than zero, indicating that the measurement point orbital top plane is lower than the reference point orbital top plane,
Δh is less than zero, indicating that the measurement point orbital top plane is higher than the reference point orbital top plane.
2. The test method of the linear open channel rail levelness tester according to claim 1, wherein the test method comprises the following steps: and a gap is formed between the magnetic gauge stand and the inner surface of the square hole of the base.
3. The test method of the linear open channel rail levelness tester according to claim 1, wherein the test method comprises the following steps: the magnetic gauge stand is placed in a magnetic circuit connection state before the track locking screw is locked.
4. The test method of the linear open channel rail levelness tester according to claim 1, wherein the test method comprises the following steps: the measuring meter is a dial indicator.
5. The test method of the linear open channel rail levelness tester according to claim 1, wherein the test method comprises the following steps: the water tank also comprises a communication groove, wherein the communication groove is used for containing water.
6. The method for testing the linear open channel rail levelness tester according to claim 5, wherein the method comprises the following steps: the communication groove is annular.
7. The test method of the linear open channel rail levelness tester according to claim 1, wherein the test method comprises the following steps: the linear open slot track levelness tester also comprises a cushion pillow component, wherein the cushion pillow component comprises a base, a cushion pillow arranged on the base, a pressing plate arranged on the cushion pillow, and a plurality of transverse adjusting screws and longitudinal adjusting screws; the bolster is used for supporting the rail, the transverse adjusting screw passes through the base and props against the bolster for adjusting the horizontal position of the bolster, the longitudinal adjusting screw passes through the bolster and then is connected to the base for adjusting the height of the bolster, and the pressing plate is fixed on the bolster through the pressing screw and is used for pressing the bottom of the rail on the bolster.
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| CN201910228895.7A CN109990765B (en) | 2019-03-25 | 2019-03-25 | Linear open slot track levelness tester |
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