CN103128635A

CN103128635A - Novel steel rail abrasive belt grinding wagon

Info

Publication number: CN103128635A
Application number: CN2011104042762A
Authority: CN
Inventors: 刘利国; 郭杰; 章爱星; 张亮; 王永林
Original assignee: Jiangnan University
Current assignee: Jiangnan University
Priority date: 2011-12-02
Filing date: 2011-12-02
Publication date: 2013-06-05

Abstract

The utility model relates to a new type of rail abrasive belt grinding vehicle. It is composed of wheels, bottom plates, baffles, diesel engines, drive shafts, driven shafts, belt machines and a hydraulic system. It is mainly used to eliminate rail waveform wear, wheel scratches, joint cracks, etc., and control rail Development of surface contact fatigue. The new rail abrasive belt grinding vehicle uses a low-power diesel engine as the power source, and is controlled by hydraulic transmission. A two-way quantitative hydraulic motor is used to drive the grinding vehicle forward and backward, and a one-way quantitative hydraulic motor drives the belt machine to start and stop. The speed change is realized through the variable variable pump, the flow rate can be adjusted by rotating the throttle valve switch, the circuit pressure is maintained stable through the overflow valve, and the pressure gauge is used to realize the pressure stabilization, pressure regulation and pressure limitation. The grinding car is driven by the front wheel, and the contact wheel is in contact with the belt machine when it is working. When not working, the contact wheel does not touch, and the belt sander does not work. The tensioning device of the contact wheel adopts a jack mechanism, which is tightened manually, and the abrasive material of the abrasive belt is corundum type.

Description

Novel steel rail belt sanding car

Technical field

The present invention relates to a kind of rail belt sanding car overall design for rail grinding.Along with the develop rapidly of China Express Railway construction and improving constantly of high-speed overload index, rail abrasion is more and more serious, and the maintenance of equipment demand of high-speed railway is also sharply increasing.Steel rail grinding is the important measures of railway construction and maintenance.Due to long-time driving, causing the tired spot corrosion of Rail Surface and wear-out failure, circular arc portion conquassation is that irregularly shaped, side forms burr etc., and the present invention can be used to eliminate the waveform wearing and tearing, wheel flat, joint crackle of rail etc., controls the development of Rail Surface contact fatigue.

Background technology

At present, domestic existing rail grinding train can satisfy the polishing operation head many, the polishing precision high, the control of dust environment protecting is excellent, the fireballing requirement of self-operating, but a lot of railway constructions and maintenance occasion require fast, facilitate, safe realization is to the polishing control of rail, and the complex structure of domestic existing rail grinding train, the polishing operation car is many, is unfavorable for increasing work efficiency, and saves cost.

Summary of the invention

Consider structure, the cost of existing rail grinding train, and the complexity that applies to actual steel rail grinding, the invention provides a kind of Novel steel rail belt sanding car, this Novel steel rail belt sanding car with light duty diesel engine as power source, pass through hydraulic pressure drive control system, adopting a two-way quantitative hydraulic motor to drive grinding machine advances or retreats, a unidirectional constant displacement hydraulic motor drives the belt sander start-stop, simple and compact for structure, use cost is low, high efficiency can satisfy requirement quick, convenient, safe rail grinding.

The technical solution adopted for the present invention to solve the technical problems is: this Novel steel rail belt sanding car is comprised of wheel, base plate, baffle plate, diesel engine, car owner's moving axis, car driven shaft, belt sander and a cover hydraulic system, with light duty diesel engine as power source, hydraulic pump works by belt driving band hydrodynamic pressure system provides pressure oil to hydraulic system.The trend of start-stop valve controlled pressure oil, open the start-stop valve, on the one hand pressure oil flows into a two-way quantitative hydraulic motor by two-position four-way valve, pulls by hand the output that the two-position four-way valve handle can change hydraulic motor and turns to, and drives the travel direction of driving-chain control grinding machine; Pressure oil flows into a unidirectional constant displacement hydraulic motor by two position two-way valve on the other hand, drives driving-chain and controls belt sander work, and the handle of pulling by hand two position two-way valve can be controlled the start-stop of belt sander.Realize chronotropic action by variable pump, the rotary barrel throttle switch can adjust flux, by overflow valve, circuit pressure is kept stable, coordinates Pressure gauge to realize voltage stabilizing, pressure regulation and pressure limiting effect.Close the start-stop valve, pressure oil directly flows back to fuel tank without executive component and each control valve, and grinding machine stops advancing.Grinding machine adopts front-wheel drive, contact wheel contact during the belt sander duty, and when not working, contact wheel does not contact, and belt sander does not operate.The contact wheel tensioning apparatus adopts jack mechanism, manually steps up, and the abrasive band abrasive material is selected corundum type.

The invention has the beneficial effects as follows, can be fast, convenient, safe control belt sander rail grinding.Simple in structure, compact due to this rail belt sanding car dynamical system, transmission system, control system, be conducive to make, processing, assembling, can satisfy quick, conveniently, the requirement of safe rail grinding.

Description of drawings

Fig. 1 is Novel steel rail belt sanding car final assembly schematic diagram.

1. wheels in figure, 2. car owner's moving axis, 3. car bottom plate, 4. vehicle baffle board, 5. car owner's moving axis chain transmission, 6. two-way quantitative hydraulic motor, 7. diesel engine, 8. mailbox, 9. band transmission, 10. bi-bit bi-pass reversal valve, 11. hydraulic pumps, 12. belt sander driving shafts, 13. the driving shaft abrasive belt wheel, 14. contact wheel shafts, 15. contact wheels, 16. belt sander driven shafts, 17. the driven shaft abrasive belt wheel, 18. car driven shafts, 19. abrasive band chain transmissions, 20. constant displacement hydraulic motors, 21. overflow valve, 22. two-position four-way valves, 23. choke valves.

Fig. 2 is hydraulic system principle figure.

1. fuel tanks in figure, 2. filter, 3. hydraulic pump, 4. start-stop valve, 5. overflow valve, 6. Pressure gauge, 7. choke valve, 8. bi-bit bi-pass reversal valve, 9. two-position four way change valve, 10. two-way quantitative hydraulic motor, 11. unidirectional constant displacement hydraulic motors.

Fig. 3 is belt sander contact wheel strainer installation diagram.

1. baffle plates in figure, 2. top cover, 3. slotted pan head screw M6x10,4. handle, 5. lift-bolt, 6. fixture block, 7. car bottom plate, 8. hex nut M8,9. plain washer d8,10. installing plate, 11. hex bolts M8x40,12. bases.

Fig. 4 is Novel steel rail belt sanding car owner moving axis part drawing.

Specific embodiments

according to Fig. 1 Novel steel rail belt sanding car final assembly schematic diagram, the staff is before starting grinding machine, should first carry out every inspection work and each by-pass cock resets, comprise and check whether the grinding machine diesel oil tank has oil, check whether Hydraulic Elements and pipe fitting damage, check that whether hydraulic oil is in normal level of liquid, inspection belt sander abrasive band abrasive material operating position, regulator solution pressing system start-stop valve is in closed condition, come the flow of regulated variable pump according to the gait of march of on-the-spot needs, regulate the direction of two-position four way change valve according to direct of travel, the bi-bit bi-pass reversal valve is in closed condition.After carrying out above-mentioned work, the staff starts diesel engine, open the start-stop valve, grinding machine travels according to predetermined direction, after arriving the polishing scene, the regulated variable pump discharge, the grinding machine gait of march that slows down is opened the bi-bit bi-pass reversal valve simultaneously, and belt sander begins polishing work, the rotary barrel throttle by-pass cock is controlled polishing speed.If need to change the travel direction of grinding machine, can realize by the direction of conversion two-position four-way valve.During belt sander work, Vehicle Speed is constant, drives belt sander work by a fixed displacement motor, and operation bi-bit bi-pass reversal valve is controlled the start-stop of belt sander.After polishing operation was completed, the staff closes the bi-bit bi-pass reversal valve quit work belt sander, controlled grinding machine and got back to starting point, closed diesel engine, regulated each gauge tap and resetted, and left the scene.Hydraulic system is totally the hydraulic system of a variable pump, a directed constant displacement hydraulic motor and a two-way quantitative motor.The chain transmission is all adopted in the transmission of hydraulic motor and car driving shaft and belt sander driving shaft.Grinding rail during the belt sander duty, grinding rail not when not working adopts driving wheel, driven pulley, contact wheel pattern.Reach tension effects during contact wheel contact rail, and can grinding work, when belt sander was not worked, contact wheel left rail, reduced the wearing and tearing in abrasive band.The contact wheel tensioning apparatus adopts jack mechanism, and the upper and lower displacement of fixed roof and the rotation of base by selecting hand lever, move up and down base, thereby reaches moving up and down of contact wheel shaft.

Claims

1. A new type of rail abrasive belt grinding car is composed of wheels, base plate, baffle plate, diesel engine, car driving shaft, car driven shaft, abrasive belt machine and a set of hydraulic system. It is characterized in that: a low-power diesel engine is used as power The source, through hydraulic transmission control, uses a two-position four-way reversing valve to control the two-way quantitative hydraulic motor to drive the grinding machine forward or backward, and a two-position two-way reversing valve controls the one-way quantitative hydraulic motor to drive the belt machine to start and stop. The variable speed pump is used to realize the variable speed, the flow rate can be adjusted by rotating the throttle valve switch, the circuit pressure is maintained stable through the overflow valve, and the pressure gauge is used to realize the pressure stabilization, pressure regulation and pressure limiting function. The grinding car is driven by the front wheel, and the belt machine The tensioning device of the contact wheel adopts a jack mechanism, which is tightened manually, and the abrasive material of the abrasive belt is corundum type.

2. The new rail abrasive belt grinding vehicle according to claim 1, characterized in that: the contact wheel tensioning device adopts a jack mechanism to fix the up and down displacement of the top cover and the rotation of the base, and the base moves up and down by selecting the hand lever. Thereby reach the up and down movement of contact axle.

3. The novel rail abrasive belt grinding vehicle according to claim 1, characterized in that: the hydraulic system consists of a fuel tank, a filter, a hydraulic pump, an on-off valve, an overflow valve, a pressure gauge, a two-position four-way reversing valve, Composed of a two-way quantitative hydraulic motor, a two-position two-way reversing valve, a throttle valve, and a one-way quantitative hydraulic motor, the diesel engine drives the hydraulic pump to provide pressure oil to the hydraulic system, and the on-off valve controls the direction of the pressure oil. On the one hand, the pressure oil flows into a two-way quantitative hydraulic motor through the two-position four-way valve. Manually turning the handle of the two-position four-way valve can change the output direction of the hydraulic motor and drive the transmission chain to control the driving direction of the grinding machine. On the other hand, the pressure The oil flows into a one-way quantitative hydraulic motor through the two-position two-way valve, which drives the transmission chain to control the work of the belt machine. Manually turning the handle of the two-position two-way valve can control the start and stop of the belt machine. The speed change is realized through the variable pump. The flow rate can be adjusted by rotating the throttle valve switch, and the pressure of the circuit can be maintained stable through the relief valve, and the pressure gauge can be used to realize the functions of stabilizing, regulating and limiting the pressure, closing the on-off valve, and the pressure oil flows directly without passing through the actuator and the control valves. Back to the fuel tank, the grinding car stops moving.