The method tests the railroad tracks and the device for its implementation
(57) Abstract:Usage: when test train tracks. The inventive device for testing railway track contains a frame supported on the undercarriage, between which is mounted on the frame mechanism of the loading path. The device also includes an apparatus for measuring and recording the condition of the road under load, which includes the linear displacement sensors. The mechanism of loading path consists of rigidly fixed on the frame housings of hydraulic cylinders located on both sides of the longitudinal plane of symmetry of the device, and wheels for engagement with the rails way, which is fixed to the cylinders. On the rods of the two cylinders located on different sides of the longitudinal plane of symmetry of the device, installed sensors, linear displacement. Rodless cylinders, hollow cylinders communicated with the pressure lines of the hydraulic system that includes pressure sensors and valves pressure-driven apparatus for measuring and recording the progress of the road under load. If you move the device along the surveyed section of path to produce a continuous record of the power loading and the corresponding deforming value of deformation paths reduce the load on the path. The device to be moved along the surveyed section of track at a speed determined from the condition of equality of the exposure time to a given load time of exposure to the real workload when operating the way. 2 C. p. F.-ly,3 ill. The invention relates to railway transport, in particular to a device for assessing the condition of the railway track.Known method of dynamic testing, road service, which is performed by the device on the bus.St. USSR N 1170031, CL E 01 23/07, 1985In a known way on the roadway moving vehicle, stop it on the survey area and load the roadway given load using load device in the form of two coaxial wheels, a combined supporting bed affected by falling cargo. Using a measuring device including a sensor vertical displacement, appreciate the moving pavement from the action drop weight.The known method has a high accuracy and stability of the results.The disadvantage of this method is l that trials produce at certain points when octanuclear. In addition, this method eliminates the possibility of damage to the roadway.There is a method of determining the resistance of horizontal to vertical stresses railway track, which is the devices on the bus. St. USSR N 1791508, CL E 01 2/00, 1993In a specified way on the rails installing seat frame and load train path specified load using a load device, comprising a frame mounted on the horizontal and vertical cylinders.The disadvantage of this method is the relatively high complexity testing long sections of track.There is a method of assessment of railway track using potenzmitteln car (B. B. Kantor, G. I. Potocki, the Device, maintenance and repair of railway tracks M, 1962, S. 202-206, ed.St. USSR N 1555405, CL E 01 35/00, 1990).In a known way by rail to move rail crew and automatically register the deviation in the maintenance level and track width, vertical and horizontal shocks and position of the path in the plan.The disadvantage of this method is that catany method does not allow to estimate the carrying capacity of the railway track.The closest set of features to the proposed method is a test method of the railway track with test car, which is a device on the bus.St. USSR N 478090, CL E 01 V/04 1975The known method is that rails load through load device mounted on a railroad car, and record the deformation path.The disadvantage of this method is that the test is carried out at the stop of the test car, with the length of the path in sitelericom space, Qatar can be measured drawdown rails with one car Parking is only 8-10 m in the case of tests of the longest railway sites method is quite time-consuming.A device for assessing the condition of the railway tracks, containing resting on the undercarriage frame and mounted on her sensors displacements associated with measuring and computing device (patent of the USSR 1105124, CL E 01 35/00, 1984)
The device provides registration of defective performance of the provisions of the roads and their location.A device for metering is mounted on a wheel pair of potenzmitel, associated with measuring and computing device. The specified device provides a relatively high measurement speed gauge and the provisions of the path in the plan and the registration of the controlled parameters.A disadvantage of the known devices is that they do not allow us to estimate the carrying capacity of the railway track.It is also known transport device according to ed.St. USSR N 1337297 CL 61 F 3/02, 1984 Known rail crew includes a rigid frame supported on the undercarriage, equipped with springs and interacting with by rail. Between driving trucks in the middle part of the railway carriage on the frame rigidly fixed rails which provide a safety truck comprising a wheel mounted for rolling along the rails. Between the guard trucks and frame placed jacks. On the frame rail crew installed the ballast weight. In the known device a safety truck with jacks provide transfer to the railway path, the additional load resulting from the displacement of the center of mass of the railway carriage when moving on inclined in the transverse direction stretch of road.EUSA ability path, it does not provide a continuous load Path through the safety truck, as well as control and changes in the magnitude of loading. In addition, the known device does not check the condition of the railway track.The closest set of features to offer the device for testing railway is a device on the bus.St. USSR N 478090. The known device comprises a frame supported on the undercarriage, the mechanism of loading path, mounted on the frame between the chassis trucks, and equipment for measuring and recording the condition of the road under load, which includes the linear displacement sensors.A disadvantage of the known device is that it provides measurements only when you stop the test car, i.e. does not allow assessment of the status of the path by movement of the carriage. In addition, the known device involves the use of grippers to engage the carriage on the rails, and when the loading rail track causes bending moment, resulting in distorted the true picture is loading.The technical result of the invention is to provide the com mode, improving the performance of the specified examinations and improving its reliability.This technical result is achieved by the known method of testing the railroad tracks, which consists in the fact that rails load through load device mounted on a railroad car, and record the deformation path, after loading the train path specified load using a load device, a railway carriage moving speed:
where L base load device (the distance between the extreme points of contact of the wheels of the load device with a rail);
t the exposure time of the real workload,
when this register relationship between load and deformation of the bullet train, and when the maximum allowable deformation of the way, reduce the burden on him.To improve the reliability of the results of the assessment the way rails load independently of one another,
This technical result is achieved in that the device for testing railway track containing a frame supported on the undercarriage, the loading mechanism is uti under load, includes linear displacement sensors, the mechanism of loading path consists of rigidly fixed on the frame housings of hydraulic cylinders located on both sides of the longitudinal plane of symmetry of the device, wheels for engagement with the rails of the path attached to the cylinders and at least on the rods of the two cylinders located on different sides of its plane of symmetry, have these sensors are linear in the displacements, Rodless cylinders cavity of the hydraulic system, which is equipped with pressure sensors and valves pressure to be included in the pressure line and operating the specified equipment.In Fig.1 shows a device for testing railway track, side view, Fig.2 wheel mechanism of loading path in extended (working) position, the section a-a in Fig.1, figs.3 is a diagram of a hydraulic drive train loading worthwhile equipment to measure and record the road condition under load.Device for testing of railway track includes a rigid frame 1, through which it is based on the sprung undercarriage 2, moving by rail 3. On the frame 1 is installed ballast weight 4 and nagastos from, multiple installed above the rails of the wheels 6, each of which is connected by a plug 7 with the rod 8 is vertically installed double chamber cylinder 9. The body of the hydraulic cylinders 9 are rigidly mounted on frame 1. On the frame 1 is also fixed lugs 15, interacting with sootvetstvuyushie plugs 7, designed to prevent reversal of the wheel 6 relative to the longitudinal axis of the device. Wheel 6 is made without flanges and have a width that ensures the interaction of the wheels with 6 rails when moving a device for testing railroad tracks on a curved track sections.In the embodiment of the invention the device for testing railroad tracks made in the form of a railroad car 11 and Possibly another implementation, for example on the basis of the train conveyor.In the carriage 11 posted by equipment hydraulic system and apparatus for measuring and recording the condition of the road. Said apparatus includes a computing machine with a recording device 12 and the valves 13. The valve 13 includes a block 14 of the pressure control and block 15 pressure adjustment. The hydraulic system consists of two identification and pump station 16. In each branch of the hydraulic rod of one of the hydraulic cylinders 9 are equipped with optoelectronic sensor 17 linear displacements. While supporting the light source sensor is installed on the plug 7 of the wheel 6, and opto-electronic receiver on the frame 1 (not shown). The discharge side 18 of each branch is equipped with a pressure sensor and a pressure valve (not shown). The pressure sensor is included in the block 14 of the pressure control and the pressure valve in block 15 of the pressure control To turn off the hydraulic cylinders 9 are provided valves 19.Testing method of the railway track is implemented as follows.Railway test car 11 load ballast weight 4, the value of which is chosen from the condition of implementation of pressure on the roadbed of the railway track, is equal to the pressure acting on the real workload when operating the way. From the same conditions choose the number of pairs of wheels of the load device and the distance between their axes. Thus, by varying these parameters will generate a given distribution of pressure along the length of the base load device, providing the necessary degree of compliance with its actual distribution, which occur when e is uttelry the carriage 11 is moved to a district survey of railway track and a load path through load device mounted on the car frame, why test the car stopped at the beginning of the subject site, include pump station 16, enables the hydraulic cylinders 9, with which the lower wheel 6 load device until it touches the rails of the railway track. When the hydraulic cylinders 9 through the wheel 6 load superstructure 3, relieving the load on the sprung undercarriage bogies 2.After loading the train path given load test car move on the subject site at a speed determined from the condition of equality of the exposure time to a given load time of exposure to the real workload when operating the way.When moving the test car register the relationship between load and deformation of the railway track.When the maximum permissible value of deformation paths reduce the load of the load device.Deformation of the railway track when you move the test car is depending on the mechanical characteristics of the path. Maximum deformation path set from the condition of conservation of the way so that after passing Ispytateley deformation path can be taken to be 50 mm This value of strain is introduced into the apparatus for measuring and recording the progress of ways. The actual deformation path monitor the readings of the sensors 17 linear displacements. An optoelectronic receiver sensor 17 mounted on the frame 1, produces a signal proportional to the linear displacement of the reference light sources installed on the forks 7 respective wheels 6, which is introduced into the apparatus for measuring and recording the condition of the road, where a comparison of actual deformation path with the specified maximum allowable value of deformation. By blocks 15, the pressure in each branch of the hydraulic system is maintained such that the actual deformation path does not exceed the specified maximum value, i.e., the hydraulic system operates in the mode servo drive.In the process of moving a test car for a survey site make continuous recording power loading and the corresponding deformation of the way through recording devices included in the apparatus for measuring and recording the condition of the road. On the basis of processing this information, make a conclusion about the carrying capacity of the railway track, and dragout repeatedly, increasing each time the load, and on the basis of data recording devices receive a graphical representation of dependence of deformation path on the force loading.Thus, the proposed method provides a continuous survey of the carrying capacity of the railway track on a given plot in auto mode
Device for testing railway works as follows.By carrying device in the form of a railroad car 11 is provided to create a mobile laboratory examination of railway track, a load device 5, which under the action of the hydraulic load on each rail way 3 given load. Apparatus for measuring and recording the progress of a path using the sensor 17 monitors the deformation of the railroad tracks during movement of the carriage, with the help of the device registration is continuous values of the force loading and the corresponding values of the deformation path. If the sensor 17 will show that the deformation of the path has reached the maximum permissible value, then the control unit 14 of the pressure control harnesses installed in the pressure line 18 sensor phenomena, through which the block is Raleigh, consequently, the force on the cylinders 9 to the corresponding branch of the hydraulic circuit of the load device 5.Thus, the proposed device provides an assessment of the condition of the railway track in the automatic mode with high performance and reliability. 1. Testing method of the railway track, which consists in the fact that rails load through load device mounted on a railroad car, and record the deformation path, wherein after loading the train path given load using load devices railway car moving with velocity V=L/t,
where L base load device,
t the exposure time of the real workload,
when this register relationship between load and deformation of the railroad tracks, and when the maximum allowable deformation of the ways to reduce the burden on him.2. The method according to p. 1, characterized in that the rails load independently of one another.3. Device for testing of railway track containing a frame supported on the undercarriage, Merali road condition under load, including sensors, linear displacement, characterized in that the mechanism of loading path consists of rigidly fixed on the frame housings of hydraulic cylinders located on both sides of the longitudinal plane of symmetry of the device, and cylindrical wheels for engagement with the rails way, attached to the rod end of the cylinders, at least on the rods of the two cylinders located on different sides of its plane of symmetry, have these sensors are linear, Rodless cylinders, hollow cylinders communicated with the pressure lines of the hydraulic system, which is equipped with pressure sensors and valves pressure included in the pressure line and operating the specified equipment.
FIELD: railway transport; permanent way maintenance and repair facilities.
SUBSTANCE: invention relates to tie tamping machines used to consolidate track ballast. Proposed tool of tie tamper has body with blade equipped with hard-alloy plates over entire area of part of area of front or front and rear surfaces. Hard-alloy plates arranged over periphery of front and rear surfaces of blades are made of material featuring higher impact strength, cracking resistance, plastic deformation specific work and bending strength or combination of said parameters as compared with the rest of plates. Plates featuring different impact strength, cracking strength, plastic deformation specific work and bending strength or combination of said parameters, are installed on different sections of peripheral part of front or front and rear surfaces of blade. Extreme lower plates are made arc-shaped between side wall and lower wall of blade. Edges are rounded off at intersection of side surfaces of all plates. Intersections of side and rear surfaces of plates are either provided with chamfer or are rounded off. All front intersections of side surfaces of said or/and the rest of plates are rounded off, intersections of their side and rear surfaces are either provided with chamber or rounded off. Blade is either made curvilinear or is provided with front slope to side of decrease of length of blade lower side at sides and in places of intersection of sides with lower side. Plates arranged at least over periphery of front surface of blade are provided with projections.
EFFECT: increased service life and improved serviceability of tool.
29 cl, 1 tbl, 15 dwg