Movable steel rail vertical force calibration equipment

Abstract

The utility model discloses a movable steel rail vertical force calibration device, and belongs to a railway vehicle operation quality rail side dynamic monitoring system. The equipment comprises two bases, two supporting leg sets, a cross beam and a hydraulic assembly. The cross beam is parallel to the steel rail along the direction of the steel rail, the two ends of the cross beam are respectively provided with one supporting leg group, the lower ends of the supporting leg groups are matched with the web of the steel rail to support the cross beam, the supporting leg groups are connected with the base, and the base moves back and forth along the steel rail to drive the whole steel rail vertical force calibration equipment to move; and the lower end of the hydraulic assembly is in contact with the upper surface of the steel rail. The device can be moved and adjusted at any position, the use scene is flexible, and the operation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a trackside dynamic monitoring system for the running quality of railway vehicles, in particular to a movable vertical force calibration device. Background Art

[0002] The Truck Performance Detection System (TPDS) monitors the wheel-rail force and wheelset motion status of running vehicles on the track to identify vehicles with poor running quality. It also conducts comprehensive inspections on the vehicle loading status and wheelset tread status, thereby monitoring the vehicle's running safety and running stability to ensure driving safety.

[0003] The purpose of rail vertical force calibration is to simulate the passage of vehicles through special tooling, load the rails with vertical force, and infer the strain of the rails when vehicles with different axle loads pass through the rails through the measured rail strain data, so as to achieve accurate measurement of rail vertical force under different vehicle passing conditions. Vertical force calibration is the key to TPDS equipment providing accurate fault prediction based on wheel-rail force measurement data.

[0004] Traditional high-speed TP vertical force calibration equipment needs to be transported long distances along the rails by manpower or trucks. It is complicated to operate, not portable enough, and has safety risks. Trackside safety monitoring work often needs to be carried out in harsh outdoor environments, and the on-site tasks are heavy and the workload is huge, which brings great challenges to the calibration work and cannot achieve the purpose of efficient, stable and continuous calibration.

[0005] Traditional wheel-rail force calibration equipment needs to be assembled by staff. During repeated pressurization and depressurization, staff are required to lift the calibration frame to prevent displacement. At the same time, when loads are applied to different positions, the tooling system that is fastened and installed in a fixed position needs to be manually disassembled. The overall operation of handling and shifting is complicated, inefficient, and poses a safety hazard. Utility Model Content

[0006] In order to solve the problems of complicated operation and low efficiency of existing calibration equipment, the utility model proposes a movable rail vertical force calibration equipment to achieve the effect of portability and high efficiency.

[0007] The movable rail vertical force calibration equipment includes two bases, two leg groups, a crossbeam and a hydraulic component; the crossbeam is parallel to the rail along the direction of the rail, and a leg group is installed at each end of the crossbeam. The lower end of the leg group cooperates with the waist of the rail to support the crossbeam, and the leg group is connected to the base. The base moves back and forth along the rail, driving the entire rail vertical force calibration equipment to move; a hydraulic component is installed under the crossbeam, and the lower end of the hydraulic component is in contact with the upper surface of the rail.

[0008] Each base includes a roller set and a side wheel set which are fixedly connected.

[0009] The roller group includes a pair of rollers and a cross plate, the cross plate is parallel to the rails along the rails, through holes are opened at both ends of the cross plate, a pair of rollers are fastened to the bottom of the cross plate by bolts, and the rollers are in rolling contact with the upper surface of the rails.

[0010] The side wheel assembly includes a pair of side rollers, a pair of wheel axles, a pair of guide wheel plates, a pair of positioning bolts, a pair of thrust bolts and a guide frame; the guide frame is in the shape of a "convex" character and is vertically fixed to the lower middle part of the horizontal plate through the middle protruding part. The two side rollers are respectively located at the rail waist on both sides of the rail, and the wheel axles extend from the upper ends of the side rollers. The wheel axles are connected to the guide wheel plates through threaded matching. The depth of the wheel axles screwed into the guide wheel plates is adjusted to change the spatial position of the side rollers; the middle parts of the left and right wings of the guide frame are respectively provided with sliding holes, and the guide wheel plates are connected to the sliding holes of the side wings of the guide frame through positioning bolts; the sides of the left and right wings of the guide frame are provided with ear clips, and the middle parts of the ear clips are provided with through holes. The thrust bolts pass through the through holes on the ear clips and are connected to the guide wheel plates, pushing the guide wheel plates to move along the sliding holes of the guide frame to adjust the positions of the side rollers.

[0011] The leg assembly includes a pair of legs, two leg positioning pins and a clamping plate. The two legs are arranged at opposite positions on both sides of the base, supporting the crossbeam and transmitting the loading force of the rail; the leg body is a straight rod, perpendicular to the crossbeam; each leg is provided with a protruding ear at the upper end, middle end and lower end, the protruding ear at the upper end of the leg is fixed to the side of the top end of the crossbeam, and the protruding ear at the lower end of the leg is clamped to the waist of the rail; the two leg positioning pins are parallel to the two legs and penetrate the protruding ear in the middle of the legs to roughly position the two legs with the base; the clamping plate is vertically fixed to the side of the protruding ear in the middle of the two legs to connect and fix the two legs.

[0012] The hydraulic assembly includes an upper positioning plate, two mounting plates, a hydraulic cylinder, a force sensor, a lower loading plate, a hydraulic rod and a gauge; the upper positioning plate is hung on the side of the beam, and the hydraulic assembly slides on the rail following the base, and at the same time, the vertical force at a fine position within a beam span is loaded and recorded by hanging it in different positions on the side of the beam; the mounting plate a, the hydraulic cylinder, the mounting plate b, the force sensor and the lower loading plate are fixed in sequence below the upper positioning plate, and the lower loading plate is in contact with the upper surface of the rail; the hydraulic cylinder is connected to the hydraulic rod through a hydraulic oil pipe, and the hydraulic cylinder pressure is adjusted by the hydraulic rod to achieve the extension and shortening of the hydraulic cylinder; the force sensor is connected to the gauge through a cable to display the magnitude of the vertical force loaded on the rail.

[0013] The advantages and beneficial effects of the utility model are:

[0014] (1) The movable rail vertical force calibration equipment provided by the utility model meets the requirements of no manual lifting when loading at the same position and no disassembly when loading at a different position. It can be moved and adjusted at any position to meet the operational requirements.

[0015] (2) The utility model plays a role in greatly improving efficiency and increasing operational safety in the calibration work of long-distance trackside sensor arrays. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the movable rail vertical force calibration device of the utility model;

[0017] Figure 2 It is a structural schematic diagram of a roller group in the movable rail vertical force calibration device of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the side wheel group in the movable rail vertical force calibration equipment of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the base in the movable rail vertical force calibration device of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the outrigger group in the movable rail vertical force calibration device of the utility model;

[0021] Figure 6 It is a structural schematic diagram of a crossbeam in the movable rail vertical force calibration device of the utility model;

[0022] Figure 7 The utility model is a structural schematic diagram of a hydraulic component in a movable rail vertical force calibration device.

[0023] In the figure:

[0024] 1-base; 2-leg assembly; 3-crossbeam; 4-hydraulic assembly; 101-roller; 102-cross plate; 103-bolt;

[0025] 201-side roller; 202-guide wheel plate; 203-guide frame; 204-positioning bolt; 205-thrust bolt; 206-wheel axle;

[0026] 401-support leg; 402-cage plate; 403-support leg positioning pin; 404-cage plate bolt; 501-limiting slide groove;

[0027] 601-upper positioning plate; 602-mounting plate; 603-hydraulic cylinder; 604-force sensor; 605-lower loading plate; 606-hydraulic rod; 607-header. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] In view of the problems of complicated operation and low efficiency of existing calibration equipment, the utility model provides a portable and efficient mobile rail vertical force calibration equipment, which can meet the requirements of no manual lifting when loading at the same position, no disassembly and assembly when loading at a different position, and can be moved and adjusted at any loading position. In the calibration work of long-distance railside sensor arrays, the operation efficiency is greatly improved and the operation safety is increased.

[0030] A movable rail vertical force calibration device, such as Figure 1 As shown, it includes two bases 1, two leg groups 2, a crossbeam 3 and a hydraulic assembly 4. A leg group 2 is installed at each end of the crossbeam 3, and the lower end of the leg group 2 cooperates with the waist of the rail. The crossbeam 3 is parallel to the top of the rail through the leg group 2; a movable hydraulic assembly 4 is installed under the crossbeam 3, and the lower end of the hydraulic assembly 4 contacts the upper surface of the rail. Each leg group 2 is fixedly connected to a base 1, and the base 1 is movably connected to the rail, and the entire rail vertical force calibration equipment is driven to move forward and backward along the rail through the base 1.

[0031] The whole of the base 1 is as follows Figure 4 As shown, it includes a roller group and a side wheel group that are fixedly connected.

[0032] Roller group Figure 2 As shown, it includes a pair of rollers 101 and a cross plate 102. The cross plate 102 is parallel to the rail along the direction of the rail. The pair of rollers 101 are fastened to the through holes opened at both ends of the cross plate 102 by bolts 103. The rollers 101 are in rolling contact with the upper surface of the rail. When working, the roller group is pushed to move the calibration device so that it moves horizontally along the track;

[0033] Side wheel group Figure 3 As shown, it includes a pair of side rollers 201, a pair of wheel axles 206, a pair of guide wheel plates 202, a pair of positioning bolts 204, a pair of thrust bolts 205 and a guide frame 203; the guide frame 203 is a "convex" shape, and the guide frame 203 is vertically fixed to the lower middle part of the horizontal plate 102 through the middle protruding part. The two side rollers 201 are respectively located at the rail waist on both sides of the rail. The upper end of the side roller 201 extends out of the wheel shaft 206. The wheel shaft 206 is connected to the guide wheel plate 202 through threaded matching. The depth of the wheel shaft 206 screwed into the guide wheel plate 202 is adjusted to change the spatial position of the side roller 201. The middle of the left and right wings of the guide frame 203 are respectively provided with sliding holes. The guide wheel plate 202 is connected to the sliding holes of the side wings of the guide frame 203 through positioning bolts 204. The sides of the left and right wings of the guide frame 203 are provided with ear clips. The middle of the ear clips is provided with through holes. The thrust bolts 205 pass through the through holes on the ear clips and are connected to the guide wheel plate 202, pushing the guide wheel plate 202 to move along the sliding holes of the guide frame 203, and adjusting the position of the side roller 201 so that the side roller keeps in contact with the rail waist. The side wheel group makes the calibration equipment stable and does not tip sideways.

[0034] Beam 3 Figure 6 As shown, vertical reinforcing rib plates are provided in the two side surfaces in the direction parallel to the rails, forming side grooves, with leg limiting sliding grooves 501 at both ends.

[0035] Leg set 2 Figure 5 As shown, it includes a pair of legs 401, two leg positioning pins 403 and a clamping plate 402. The two legs 401 are arranged at opposite positions on both sides of the base, supporting the cross beam 3 and transmitting the loading force of the rail; the main body of the legs 401 is a straight rod, which is perpendicular to the cross beam; each leg 401 is provided with a protruding ear at the upper end, middle end and lower end, and the protruding ear at the upper end of the leg 401 is inserted into the limiting slide groove 501 of the cross beam 3, and the protruding ear at the lower end of the leg is clamped on the waist of the rail; the two leg positioning pins 403 are parallel to the two legs 401 and penetrate the protruding ear in the middle of the legs 401, and roughly position the two legs 401 and the base 1; the clamping plate 402 is vertically fixed to the side of the protruding ear in the middle of the two legs 401 through the clamping plate bolts 404, and the two legs 401 are connected and fixed.

[0036] Hydraulic components 4 Figure 7 As shown, it includes an upper positioning plate 601, two mounting plates 602, a hydraulic cylinder 603, a force sensor 604, a lower loading plate 605, a hydraulic rod 606 and a gauge 607; the upper positioning plate 601 is slidably connected to the side of the crossbeam 3 to adjust the loading position of the hydraulic assembly; the lower part of the upper positioning plate 601 is sequentially fastened to the mounting plate a, the hydraulic cylinder 603, the mounting plate b, the force sensor 604 and the lower loading plate 605, and the lower loading plate 605 is fixedly connected to the upper surface of the rail; the hydraulic cylinder 603 is connected to the hydraulic rod 606 through a hydraulic oil pipe, and the pressure of the hydraulic cylinder 603 is adjusted by the hydraulic rod 606 to achieve the extension and shortening of the hydraulic assembly 4; the force sensor 604 is connected to the gauge 607 through a cable to display the size of the vertical force loaded on the rail. During the calibration process, the function of the lower loading plate 605 is to achieve concentrated loading of a small area of ​​vertical force on the upper surface of the rail. When the calibrator is working, the pressure of the hydraulic cylinder 603 is adjusted through the hydraulic rod 606 to achieve the extension and contraction of the hydraulic component 5, and adjust the size of the vertical force loaded on the track. The force sensor 604 measures the loaded value and displays it through the header 607.

[0037] The application process of the movable rail vertical force calibration equipment includes assembly and measurement, specifically:

[0038] Step 1: Prepare 2 roller groups and 2 side wheel groups, connect the roller groups and the side wheel groups to form 2 bases, pre-place the 2 bases above the selected measuring position rail, the center distance of the base is equal to the length of the beam, then adjust the left and right places of the 2 side wheel groups, and use the thrust bolts to make the side rollers fit the rail waist, and finally tighten the locking bolts to achieve a tight connection between the two guide wheel plates and the guide frame, thereby completing the upper rail adjustment of the two bases.

[0039] Step 2: Prepare 2 sets of outriggers. First, roughly position one leg of the outrigger group with a locating pin and a base, and position it on one side of the base. Similarly, roughly position one leg of the other outrigger group with a locating pin and another base, and position it on the same side of the other base. The ears at the bottom of the two outriggers extend out to clamp on the waist of the rail. At this time, one leg is roughly positioned on each base by bolts. At this time, hang the crossbeam on the two legs through the limiting slides on both sides of the crossbeam and hold it steady. Then, install each leg. The other leg of the leg group is roughly positioned with a positioning pin, and the remaining two legs are positioned on the other side of the two bases. The ears on the upper part of the legs extend into the limit slide grooves of the crossbeam, and the ears on the lower part of the legs are clamped on the waist of the rails. Finally, the two legs of each leg group are fixedly connected with a clamping plate through clamping plate bolts to complete the final installation of the two leg groups. At this time, the calibration equipment except the hydraulic assembly stands on the rails by itself, and the base is pushed. The calibration equipment can move stably forward and backward along the rails without shaking left and right.

[0040] Step 3: Install the hydraulic assembly, select the beam hanging position, hang it on the beam, and use hydraulic loading to press the upper positioning plate against the bottom of the beam and the lower loading plate against the upper surface of the rail to complete the assembly of the entire calibration equipment and provide stable support.

[0041] Step 4: Calibration work within the fixed range of the calibration equipment. The hydraulic cylinder pressure is adjusted by the hydraulic rod to achieve the extension and shortening of the hydraulic cylinder, adjust the vertical force loaded on the track, and the force sensor measures the loaded value and displays it through the header to record the data. The hydraulic component can be moved on the beam, and the fine position loading record within the span of a beam can be recorded by hanging it at different positions on the side of the beam.

[0042] Step 5: Calibration at other positions. Unload the hydraulic pressure of the hydraulic cylinder so that there is no force between the beam and the rail. Push the base to move the calibrator to other positions on the rail. During the movement, the hydraulic assembly is hung on the beam. The gauge head and hydraulic rod are placed in the storage area on the horizontal plate of the base. When it reaches the designated calibration position, place the gauge head and hydraulic rod on the ground nearby. Pressurize the hydraulic cylinder through the hydraulic rod to tighten the hydraulic cylinder between the beam and the rail. Start to apply vertical force to the track with the hydraulic assembly according to the measurement requirements and start calibration measurement records.

Claims

1. A movable rail vertical force calibration device, characterized in that: It includes 2 bases, 2 outrigger groups, a crossbeam and a hydraulic component; the crossbeam is parallel to the rail along the direction of the rail, and an outrigger group is installed at each end of the crossbeam. The lower end of the outrigger group cooperates with the waist of the rail to support the crossbeam, and the outrigger group is connected to the base. The base moves forward and backward along the rail, driving the entire rail vertical force calibration equipment to move; a hydraulic component is installed under the crossbeam, and the lower end of the hydraulic component contacts the upper surface of the rail; Each base includes a roller set and a side wheel set fixedly connected; The roller assembly includes a pair of rollers and a cross plate, the cross plate is parallel to the rails along the rails, through holes are opened at both ends of the cross plate, a pair of rollers are fastened to the bottom of the cross plate by bolts, and the rollers are in rolling contact with the upper surface of the rails; The side wheel group includes a pair of side rollers, a pair of wheel axles, a pair of guide wheel plates, a pair of positioning bolts, a pair of thrust bolts and a guide frame; the guide frame is in the shape of a "convex" character and is vertically fixed to the lower middle part of the cross plate through a middle protruding part; the two side rollers are respectively located at the rail waists on both sides of the rail, and the wheel axles extend out of the upper ends of the side rollers, and the wheel axles are connected to the guide wheel plates through threaded cooperation, and the depth of the wheel axles screwed into the guide wheel plates is adjusted to change the spatial position of the side rollers; sliding holes are respectively opened in the middle of the left and right flanks of the guide frame, and the guide wheel plates are connected to the sliding holes of the flanks of the guide frame through positioning bolts; ear clips are provided on the side surfaces of the left and right flanks of the guide frame, and a through hole is opened in the middle of the ear clips, and the thrust bolts pass through the through holes on the ear clips to connect with the guide wheel plates, so as to push the guide wheel plates to move along the sliding holes of the guide frame to adjust the positions of the side rollers; The leg assembly comprises a pair of legs, two leg positioning pins and a clamping plate; the two legs are arranged at opposite positions on both sides of the base to support the crossbeam and transmit the loading force of the rail; the leg body is a straight rod, which is perpendicular to the crossbeam; the two legs are roughly positioned with the base through the two leg positioning pins; the clamping plate is vertically fixed to the side of the protruding ear between the two legs to connect and fix the two legs; The hydraulic assembly includes an upper positioning plate, two mounting plates, a hydraulic cylinder, a force sensor and a lower loading plate; the upper positioning plate is hung on the side of the beam; the mounting plate a, the hydraulic cylinder, the mounting plate b, the force sensor and the lower loading plate are fixed in sequence below the upper positioning plate, and the lower loading plate is in contact with the upper surface of the rail.

2. The movable rail vertical force calibration device according to claim 1 is characterized in that: The two side surfaces of the cross beam in the direction parallel to the rails are provided with vertical reinforcing rib plates to form side grooves, and the two ends are support leg limiting sliding grooves.

3. The movable rail vertical force calibration device according to claim 1, characterized in that: The upper, middle and lower ends of the legs are respectively provided with protruding ears. The protruding ear at the upper end of the leg is fixed to the side surface of the top end of the beam, and the protruding ear at the lower end of the leg is clamped on the waist of the rail. The protruding ear in the middle of the leg fixes the leg to the base through a leg locating pin that penetrates the leg.

4. The movable rail vertical force calibration device according to claim 3 is characterized in that: The two leg locating pins are parallel to the two legs.

5. The movable rail vertical force calibration device according to claim 1, characterized in that: The pressure of the hydraulic cylinder is adjusted by a hydraulic rod, and the hydraulic cylinder and the hydraulic rod are connected by a hydraulic oil pipe.

6. The movable rail vertical force calibration device according to claim 1, characterized in that: The value of the force sensor is displayed via a cable connected to a meter head.

7. The movable rail vertical force calibration device according to claim 1, characterized in that: During the calibration of rail vertical force, concentrated loading of small-area vertical force is achieved on the upper surface of the rail through the lower loading plate.

8. The movable rail vertical force calibration device according to claim 1 or 2, characterized in that: The hydraulic assembly follows the base and slides on the rails. At the same time, it records the vertical force at a precise position within the span of a beam by hanging it into different positions on the side of the beam.

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