SU1281887A1 - Device for measuring microprofile of road background - Google Patents

Abstract

The invention relates to geodetic instrumentation and improves productivity by simplifying the installation of the reference base and eliminating the manual rolling of the cart. The base unit of the device is made in the form of cables 8 and 9, mounted on the movable fists 13 of the beam 14, placed on the main vehicle. The pre-tensioning of the cables is performed by rotating the reels 16, which are then fixed on the axis 17 by means of the sleeves 21. The final tensioning is carried out by the hydraulic cylinder 26, and by means of the hydraulic cylinder 27 the cables are set to the desired height. On tensioned cables 8 and 9, a trolley is mounted with support rollers 7, centering of which takes place under the action of springs 12. From the initial position at the initial point of reference, the trolley moves uniformly along the measurement base, thus measuring and registering the microprofile sensors in the form of rheochords but both The number of sensors corresponding to the number of measurement points is used to simultaneously register the longitudinal and transverse profile of the road-soil background. 3 hp f-ly. 3 il. SS ate

Description

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The invention relates to a geodetic instrument making, in particular to devices for measuring the microprofile day surface.

The purpose of the invention is to increase labor productivity by simplifying the installation of the reference base and eliminating the manual rolling of the cart.

Figure 1 presents the proposed device; figure 2 is the same, top view;

The device works as follows.

In the transport position, the cables 8 and 9 together with the beam 14 are fixed on the drums 16, and the cable 28 is mounted on the drum 22 of the vehicle 20, the trolley is mounted on the vehicle 15.

When preparing the device for operation on a selected background, the reference point of the measuring base is determined, the vehicle 15 is installed on a level platform and

in FIG. 3, the measuring and recording 10 is inhibited at a certain distance.

The device works as follows.

In the transport position, the cables 8 and 9 together with the beam 14 are fixed on the drums 16, and the cable 28 is mounted on the drum 22 of the vehicle 20, the trolley is mounted on the vehicle 15.

When preparing the device for operation on a selected background, the reference point of the measuring base is determined, the vehicle 15 is installed on a level platform and

soup and knots.

The device consists of sensors 1, mounted on rods 2, placed in guide frames 3 and 4 of the carriage, interconnected by an axis 5 and fixed before the starting point of reference.

The beam 14 is attached to the frame of the vehicle 15, and the cams 13 are extended and secured. The drum 16 is disengaged when the couplings 21 are turned off, and transported by nuts 6. The trolley with its support means 20 begins to move, with comi rollers 7 mounted on the tensioner, unwinding of cables 8, 9 and cables 8 and 9 are held on them. 28. In this position, the brush with hydraulic collars 10, which are fastened to the lipdra 26, is extended, and the hinged device with levers 11, pivotally secured 19, is in the transport position. fixed on the frame and pressed to the cable 20 is determined by the end point of the measuring base,

the vehicle 20 is mounted on a level platform at some distance beyond this point and is braked.

Rotation of the drums 16 with the help of the knobs fixed on them, preloads the cables 8 and 9. After which the drums 16 are fixed on the axis 17 by means of the sleeves 21. The cable 28 connects to the spring-loaded tension roller, and the V-belt transmission 23 - with springs 12. Cables 8 and 9 are mounted on sliding fists 13 of the beam 14, mounted on the vehicle 15, and on the drums 16 mounted on bearings on the axis 17 rigidly connected to the crank frame 18 mounted in the movable supports of the transport attachment 19 sreds Twa 20.

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The couplings 21 serve to connect the reels 16 with the axis 17. On the axis 17, the drum 22 freely rotates, rigidly connected with the V-belt pulley 23. The drive pulley of the V-belt transmission is mounted on the shaft of the angular gear 24 connected to the shaft 25 of the power output of the vehicle 20.

The crank frame 18 is mounted for movement relative to the hinged device 19. The movement is carried out by means of a hydraulic cylinder 26 connected to the frame 18 through a dynamometer, and the hinged device 19 is raised or lowered by a hydraulic cylinder 27. The cable 28 is tensioned between the drum 22 and the roller 29 and is connected to the bracket 30 of the cart. In front of the drum 16, limiters 31 are installed.

On the rods 2 mounted reichords 32

traction roller of a V-belt transmission. Limiters 31 are installed at a distance from each other equal to the distance between the centers of the cams 13, which is selected taking into account ensuring the movement of the sensors along the centerline of the wheel tracks of the selected gauge.

The hydraulic cylinder 26 performs the final tensioning of the cables 8 and 9. The tension is determined by a dynamometer. By means of the hydraulic cylinder 27, the cables 8 and 9 are set to the desired height and the hinged device 19 is fixed in this position. The sensor cart is mounted on the cables 8 and 9. To do this, press the handles of the levers 11, stretch the spring 12, set the cart with the rollers 7 on the cables and release the handles of the levers 11.

contacts 33 connected to the frame te- Under the action of the springs 12 there is a centering. On roller 7, mounted on cable 8, a crank is fixed with contact breaker 34. Interrupter 34 acts on a contact plate 36 spring loaded 37. An amplifier 38 and a magnetograph (oscilloscope) 39 are included in the measuring node circuit.

The circuit is powered from the current source 40, and the equipment is placed in the container 41. The equipment in the container 41 is connected to the reichords and

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Carriage on the cables 8 and 9 is rendered. If necessary, change the distance between the support frames 3 and 4 and the rotation of the m nuts 6. The cable 28 is connected to the bracket 30, and the chains of the railways and the track marker are connected to the cable. The cart is set to its initial position at the starting point, the vehicle engine 20 is turned on, and under the action of the cable 28, the cart is evenly moved around the base of the track beater with an electric cable, which is 55 meters long, measuring and registering the microprofile on both wheels.

is wound on or off as the cart moves onto the drum associated with the roller 29.

before the starting point of reference.

The beam 14 is attached to the frame of the vehicle 15, and the cams 13 are extended and secured. The drum 16 is released when the clutches 21 are turned off, and the vehicle 20 begins to move, during which the cables 8, 9 and 28 are unwound. In this position, the hydrocypdra arms 23 are extended and the attachment 19 is in the transport position. The end point of the dimensional base is determined.

traction roller of a V-belt transmission. Limiters 31 are installed at a distance from each other equal to the distance between the centers of the cams 13, which is selected taking into account ensuring the movement of the sensors along the centerline of the wheel tracks of the selected gauge.

The hydraulic cylinder 26 performs the final tensioning of the cables 8 and 9. The tension is determined by a dynamometer. By means of the hydraulic cylinder 27, the cables 8 and 9 are set to the desired height and the hinged device 19 is fixed in this position. The sensor cart is mounted on the cables 8 and 9. To do this, press the handles of the levers 11, stretch the spring 12, set the cart with the rollers 7 on the cables and release the handles of the levers 11.

Under the action of the springs 12, a centPod occurs. By the action of springs 12 a cent occurs.

Carriage on the cables 8 and 9 is rendered. If necessary, change the distance between the support frames 3 and 4 and the rotation of the m nuts 6. The cable 28 is connected to the bracket 30, and the chains of the railways and the track marker are connected to the cable. The cart is set to its initial position at the starting point, the vehicle engine 20 is turned on, and under the action of the cable 28, the cart is moved evenly across the base of the meter, measuring and recording the micro profile in both wheels m.

At the end of the measurement section, after the sensors pass the reference point.

vehicle engine 20 is turned off. The cart is removed from the cables 8 and 9, the beam 14 is disconnected from the vehicle 15, and the device is installed in the TpaHcnopjHoe position.

A mechanical cable tension assembly can provide tension for the cables parallel to the surface selected for background measurement with minimal sagging.

The tension of the cables is limited by the coupling weight of the vehicles between which the cables are pulled. To increase the grip weight, vehicles can be equipped with additional stops, shoes fitted under wheels, etc. The force of stretching of the cables can reach several tons.

When calculating the parameters of a real microprofile, corrections for residual cable suspension are introduced. With this approach, the productivity of the device is improved, real microprofile is quickly obtained relative to the conventional line connecting the suspension points of the cables.

The proposed device can be used with simultaneous measurement of the longitudinal and transverse profile of the road-soil background. In this case, the number of sensors increases in accordance with the number of measurement points on the cross-section of the background, the sensors are mounted in additionally installed directions on the trolley.

The device can be used to test and calculate dynamic transducers of vehicles, to obtain the source data necessary for calculating dynamic equivalent systems of vehicles, to calculate strength, to develop accelerated testing techniques. In addition, the device can be used to control the flatness of airfield pavements, highways, polygons for speed and certificate tests, etc.

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Claims (4)

1. A device for measuring the micro profile of a road background containing a vehicle, a base, a trolley on rollers, sensors, measuring and recording units, characterized in that, in order to increase productivity by simplifying the installation of the base of reference and eliminating the manual rolling of the cart, the base made in the form of cables connected through the introduced tension unit to the main vehicle and fixed with the possibility of disconnection on the additionally introduced vehicle, the cables are located They are parallel to the road surface, two of which are in contact with the rollers of the carriage, fastened to the third driving cable and installed with the possibility of interleaving along the longitudinal axis of the reference frame. 2. The device according to claim 1, characterized in that the tensioning unit of the cables is made in the form of drums mounted on the frame KPHBOUJH-pa installed in the mounted supports and connected to the rod of the hydraulic cylinder mounted on the frame of the main vehicle, and the drum of the drive cable connected by a V-belt transmission with a gearbox connected to the power take-off shaft of the main vehicle. 3. Device no. 1, characterized by that the sensors are made in the form of reichords, installed with the possibility of interchangeable relatively rigidly fixed} ia trolley contacts and interrupters of the track marker, installed not on the trolley. 4. The device according to claim 1, characterized in that the registering node is designed as an amplifier and a magnetograph, connected to a current source and included in an electric circuit of reichords. 32 33 11 fS f9 26 27 1 L n J J 32 39 33. hrl (pU2.5