Lithium battery full-automatic steel rail grinding machine

Abstract

The utility model discloses a lithium battery full-automatic steel rail grinding machine which is used for solving the problem that an existing grinding machine is not high in grinding precision. Comprising a grinding head, a main motor, a motor mounting frame, a lifting mechanism, a rotating mechanism, a translation mechanism and a rack, the rack is provided with a door-shaped mounting frame through the translation mechanism, and the two sides of the lower end of a portal frame are mechanically connected with longitudinal beams of the door-shaped mounting frame through the rotating mechanism in an angle-adjustable mode; linear bearings are installed on two linear guide columns on the portal frame, the two linear bearings are fixedly connected with a motor installation frame, a main motor is fixed to the motor installation frame, a polishing head is installed on a power shaft of the main motor, and the rotating structure is innovatively designed. According to the device, the motor mounting frame with the rectangular frame is adopted, and the portal frame, the door-shaped mounting frame and other good-rigidity designs are matched, so that the rigidity degree of the grinding head is improved, flexible deformation is relieved, and the stability of the grinding head is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of rail grinder. BACKGROUND

[0002] The railway maintenance department mainly uses rail grinding to improve the wheel-rail relationship and prolong the service life of the rail. Restricted by the skylight time and construction cost, the vertical rail grinder becomes the main equipment in the daily rail profile repair, and is currently mainly used for grinding the fish scale, peeling off the block, wave abrasion and repairing the rail profile on the top surface and side surface of the rail. Figure 1 .

[0003] The vertical rail grinder currently used in the local area is driven by an internal combustion gasoline engine. The vertical rail grinder driven by the internal combustion gasoline engine has the following problems: the exhaust emission of the internal combustion engine is serious, which endangers the health of the operator and causes environmental pollution; the gap between the transmission walking parts is large, the rigidity of the grinding wheel is poor, the self-vibration is generated, and the grinding precision is poor; the grinding iron filings are easily sucked into the engine, the engine cylinder body is damaged, and the failure rate is high; the engine noise pollution damages human health and disturbs the residential area; it is difficult to start at low temperature; it is difficult to supply imported parts, and the maintenance cost is high. Among them, the traditional grinder is driven by an internal combustion engine and adopts a mechanical adjusting mechanism. The minimum division of the mechanical adjusting mechanism depends on the fixed limit on the circumference or straight line, and the minimum adjusting angle is 1°. Therefore, the minimum division of the lifting and angle rotation is limited, and the grinding quality depends on the experience of the workers. UTILITY MODEL CONTENTS

[0004] To solve the above problems, it is very urgent and necessary to develop a lithium battery vertical rail grinder. It is of great significance to improve the equipment quality and ensure the safety and stability of train operation.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A lithium battery full-automatic rail grinder, comprising a grinding wheel, a main motor, a motor mounting rack, a lifting mechanism, a rotating mechanism, a translation mechanism, a rack, a portal frame, a door-shaped mounting frame, and an electric control system, characterized in that: four rail wheels are arranged on the rack, flanges and lateral limiting wheels are arranged on the edges of the rail wheels, and insulating sleeves are arranged on the surfaces of the rail wheels, and a brake assembly is arranged at one or two rail wheels, the rack is pushed to move along the rail, and the grinder is stopped at any position on the rail by operating the brake assembly;

[0007] The rack is installed with the door-shaped mounting frame through the translation mechanism.

[0008] The lower end of the portal frame is mechanically connected with the longitudinal beam of the door-shaped mounting frame through a rotating mechanism which can adjust the angle; the rotating mechanism comprises a servo motor II, a worm gear, a large gear, a small gear and a rotating shaft I and a rotating shaft II, wherein the rotating shaft I is mechanically mounted on the longitudinal beam of the door-shaped mounting frame, the rotating shaft II is fixedly connected with the portal frame and movably cooperates with the door-shaped mounting frame, the rotating shaft I is fixedly connected with the small gear, the large gear is fixedly mounted on the rotating shaft II, the small gear is engaged with the large gear, the rotating shaft I is key-connected with the worm gear, and the worm is mechanically connected with the motor shaft of the servo motor II; the servo motor II is electrically connected with the electric control system and adjusts the polishing rotation angle under the instruction of the electric control system, and if the parallel position of the steel rail is set as zero position, the grinding wheel can rotate within the range of ±90° in the vertical direction of the steel rail;

[0009] A lifting guide assembly and a lifting mechanism are mounted between the portal frame and the motor mounting frame, wherein the lifting mechanism comprises a lead screw, a lead screw sleeve, a bevel gear and a servo motor I, wherein the lead screw is mechanically cooperated with the lead screw sleeve, the lead screw sleeve is rotatably mounted on the cross beam of the portal frame through a bearing, the lead screw is movably connected with the motor mounting frame, the lead screw sleeve is mechanically connected with the bevel gear, the bevel gear is cooperated with a bevel gear, the bevel gear is mounted on the motor shaft of the servo motor I, and the servo motor I is mounted on the cross beam of the portal frame; the servo motor I is electrically connected with the electric control system and lifts or lowers the motor mounting frame in the height direction under the instruction of the electric control system, and the lifting range is between 0-190mm;

[0010] The main motor with the grinding wheel is fixed in the motor mounting frame and the motor shaft of the main motor is downwardly arranged and has an inclination angle β in the vertical plane perpendicular to the steel rail.

[0011] Further, in the stroke range of the lifting action, the height of the grinding wheel can be manually raised or lowered by the key, and zero position locking can be performed during the lifting process; after the zero position locking, the grinding wheel can only be raised or lowered above the zero position.

[0012] Further, the large gear is a one-third sector profile incomplete gear.

[0013] Further, the translation mechanism comprises a linear slide rail assembly and a lead screw transmission mechanism, the lower end of the door-shaped mounting frame is mechanically connected with the rack through four linear slide rail assemblies, the lead screw in the lead screw transmission mechanism is rotatably mounted on the rack through a bearing assembly and is arranged in the longitudinal direction, and the lead sleeve sleeve in the lead screw transmission mechanism is fixedly mounted on the door-shaped mounting frame.

[0014] Further, a chain wheel is further mounted at the end of the lead screw and is connected with a hand wheel through a chain transmission, the hand wheel is mounted on a support, the support is a cantilever support which is extended from the sub-frame and is fixedly welded, and a chain transmission mechanism is mounted in the support.

[0015] Further, the lifting guide assembly comprises two linear guide columns mounted on the portal frame and a linear bearing mounted on the motor mounting frame, and the linear guide columns and the linear bearing are in sliding fit.

[0016] Further, an upper position of the door-shaped mounting frame is provided with the touch screen.

[0017] Further, the motor mounting frame is a rectangular frame formed by steel plates.

[0018] Further, the rack comprises two left and right sub-frames and is detachably connected by means of steel pipe insertion and bolt fixation.

[0019] Further, a lithium battery, a storage platform and a control box are fixedly mounted on the rack.

[0020] The utility model discloses the beneficial effects are:

[0021] In the technology, the servo motor and its precision servo control system are introduced into the polishing machine, the intelligent electric control integration degree of the polishing machine is greatly improved, and automation transformation is realized.For example, the common operations of the machine head lifting and angle rotation are all driven by servo motors, and a PLC controller is used in cooperation, so that all polishing operations are concentrated on the control panel for touch screen operation, the operation difficulty of the machine is reduced, and the automation level is improved.

[0022] The machine display screen has many integrated functions, can accurately display "real-time angle" and "feed amount" in the form of pictures and numbers, has many functions such as "zero reset", "low position locking", "fast and slow speed" and "power display", and has a digital input automatic execution function, so that the intelligence is further improved.

[0023] The polishing machine has good stability: in order to cooperate with the high precision of the servo motor, the polishing machine adopts linear slide rail components, linear bearings, worm gears, screw transmissions and other mechanical design means, so that the assembly gap is reduced, and the shaking degree of the grinding wheel is reduced.

[0024] The motor mounting frame of the rectangular frame is adopted in the technology, the installation of the main motor is more reliable and stable, the rigid installation of the main motor is realized, the rigidity of the grinding wheel is improved by cooperating with the portal frame and the door-shaped mounting frame which have good rigidity, the flexible deformation is reduced, and the stability of the whole machine grinding wheel is improved by one level.

[0025] The technology changes the rotating mechanism into worm gear transmission cooperating with servo motor driving, has high-precision and high-stability mechanical transmission, and improves the rigidity of the portal frame through the self-locking effect of the worm gear, so that the portal frame can relatively rotate and quickly keep the position after being adjusted to the right position, and the problem of main motor shaking is solved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The figure is a schematic diagram of polishing the top and side of the rail.

[0027] Figure 2 The figure is a perspective view of the grinding machine.

[0028] Figure 3 The figure is a schematic diagram of the grinding machine. Figure 2 The figure is a partial enlarged view of A in the middle.

[0029] Figure 4 The figure is a schematic diagram of the grinding machine. Figure 2 The figure is a partial enlarged view of B in the middle.

[0030] Figure 5 The figure is a schematic diagram of the grinding machine. Figure 2 The figure is a partial enlarged view of C in the middle.

[0031] Figure 6 The figure is a longitudinal full section view.

[0032] Figure 7 The figure is a control principle diagram of the device.

[0033] Figure 8 The figure is a screen physical display diagram of the electric control system.

[0034] Figure 9 The figure is a screen physical display diagram of the electric control system.

[0035] In the figure:

[0036] 100 rack, 110 rail wheel, 111 insulation sleeve, 112 manual brake assembly, 113 flange, 120 limit wheel, 130 bolt, 140 plug tube,

[0037] 200 lithium battery, 210 storage platform,

[0038] 300 door-shaped mounting frame, 310 linear slide rail assembly, 320 touch screen, 330 screw drive mechanism, 331 bracket, 332 hand wheel, 340 longitudinal beam,

[0039] 400 gantry, 410 rotating mechanism, 430 linear guide column, 420 linear bearing,

[0040] 411 servo motor II, 412 worm gear, 413 large gear, 415 small gear, 414 rotating shaft I, 416 rotating shaft II,

[0041] 500 motor mounting frame, 510 main motor, 520 bottom frame plate, 530 grinding wheel, 540 protective cover,

[0042] 600 lifting mechanism, 610 lead screw, 620 lead sleeve, 630 bevel gear, 640 servo motor I. DETAILED DESCRIPTION

[0043] The embodiment discloses a vertical steel rail polishing machine powered by lithium battery and capable of being quickly disassembled, realizes high precision and intelligent lifting by optimizing frame structure, optimizing deformation structure, optimizing rotation, lifting and translation and the like, and adding a PLC touch screen operating system. The device adopts a modular design method, the whole machine can be quickly disassembled and assembled, transportation is facilitated, the intelligent degree of the vertical steel rail polishing machine is improved, automation is realized, polishing precision is improved, work efficiency is improved, labor intensity of workers is reduced, environmental pollution is reduced, and the device can be used for preventive and repair polishing work on top surfaces and inner surfaces of different types of steel rails.

[0044] The understanding of the embodiment needs to be fully combined with the drawings Figure 1 to the drawings Figure 9 are performed.

[0045] Referring to Figure 2 , the polishing machine can be divided into a grinding wheel, a main motor, a lifting mechanism, a rotating mechanism, a translation mechanism, a rack, a touch screen, a control box, a control box and a lithium battery and the like. The driving motor in the lifting mechanism and the rotating mechanism adopts a servo motor control, has the advantages of closed loop control through the program control of the electric control system.

[0046] The rack 100 is designed as four rail wheels along the track and is manually pushed. The rack contains four rail wheels 110, and an insulating sleeve 111 is arranged at each rail wheel and sleeved, so that each rail wheel and the rack are insulated, static electricity or weak electricity interference between the two is prevented, and safe operation of automatic control is ensured.

[0047] A lateral limiting wheel 120 is arranged on the rack corresponding to each rail wheel, which is used for lateral limiting and limiting the lateral direction of the steel rail to avoid derailment. The four rail wheels are placed on the steel rail, so that the rack has the ability of linear displacement on the steel rail.

[0048] On the side corresponding to each rail wheel 110, referring to Figure 5 , that is, the other side away from the lateral limiting wheel 120, a flange 113 is arranged on the rail wheel, which limits and guides the steel rail on the inner side.

[0049] Further, a manual brake assembly 112 is arranged at one or two rail wheels 110, which is operated by a wrench and temporarily locks the rail wheel 110 to prevent it from rolling, which is very important when working on a non-horizontal steel rail section.

[0050] Further, one insertion cylinder 140 is arranged at each of the four corners of the frame 100, which is an optional function, for example, to build a sunshade, which is very important for field construction, especially in hot summer.

[0051] The frame 100 can be divided into two parts, including two sub-frames, and is quickly assembled by steel pipe insertion and bolt 130 fixation. The assembled frame is arranged in a stretcher shape. When transporting, the nuts are loosened, the bolts are pulled out, and the machine is divided into two parts for easy transportation. When polishing is needed, the two split frames are inserted, the holes of the two half frames are aligned, the bolts are inserted, and the nuts are tightened to achieve quick assembly.

[0052] A lithium battery 200 is fixedly installed on one of the sub-frames, and a storage platform 210 is arranged. The storage platform can be used to place temporary tools and the like in the working state. The storage platform 210 is fixed on the steel pipe of the sub-frame by a hoop, or can be fixed by welding or other methods. The presence of the storage platform 210 can also enhance the overall stiffness of the frame and resist deformation of the frame.

[0053] A door-shaped mounting frame 300 is installed on the other sub-frame through a translation mechanism. Specifically, a square steel pipe 150 is sleeved and welded or bolted on the crossbeam of the sub-frame, that is, the installation platform of the linear slide assembly is formed by fixing the square steel pipe outside the circular steel pipe, and the strength of this part is locally strengthened.

[0054] The door-shaped mounting frame 300 spans two steel rails (not shown in the figure), and the length direction of the steel rail extends in the longitudinal direction. The length direction of the steel rail can be referred to as the longitudinal direction indicated in the figure. Specifically, the door-shaped mounting frame 300 is bent and welded into a steel pipe, and four linear slide assemblies 310 are installed at the square steel pipe 150 at the bottom end of the door-shaped mounting frame 300. That is, the linear slide rails are fixedly installed on the two square steel pipes of the sub-frame, the linear slide blocks are installed on the door-shaped mounting frame, and high-precision linear sliding cooperation is achieved through the cooperation of the linear slide blocks and the linear slide rails. The linear slide blocks and the linear slide rails together form the linear slide assembly 310. Figure 2 The space for installing the gantry 400, the touch screen and other functional components is formed inside the door-shaped mounting frame 300.

[0055] The door-shaped mounting frame 300 described above has two sub-frames and a crossbeam, has a three-dimensional rigid frame, and is movably installed at the lower end of the door-shaped mounting frame through four linear slide assemblies. The touch screen 320 is fixed at the upper position of the door-shaped mounting frame, which is convenient for the operation position of the operator.

[0056]

[0057] ​Further, a set of screw rod driving mechanisms 330 are installed between the bottom end of the door-shaped mounting frame 300 and the sub-frame of the machine frame, the screw rods in the screw rod driving mechanisms are rotatably mounted on the sub-frame through bearing assemblies and are arranged longitudinally, wherein the screw sleeves in the screw rod driving mechanisms 330 are fixedly installed at the bottom of the door-shaped mounting frame 300, and the door-shaped mounting frame is driven to move in the transverse direction by the screw rod driving mechanisms. The end of the screw rod in the screw rod driving mechanism is further provided with a chain wheel, and a hand wheel is connected through a chain transmission, the hand wheel 332 is installed on a support 331, the support is a cantilever support extending from the sub-frame and fixedly welded, and a chain transmission mechanism is installed inside, and the screw rod is controlled through the hand wheel to control the transverse displacement of the door-shaped mounting frame. This operation is used to adjust the relative position of the grinding head and the steel rail to be ground.

[0058] The four sets of linear slide rail assemblies 310 described above use the commonly used slide rails in machine tool equipment as linear slide rails, linear slide blocks as supports, and professional high-precision screw rod driving structures as control driving rods, effectively eliminating the longitudinal gap, smooth transmission and high precision, meeting the requirements of each grinding position on the steel rail to be ground.

[0059] The machine frame 100 is only used as a support component, and two linear slide rails are assembled on the upper part, the parallelism is controlled to be within 0.2 mm when the linear slide rails are assembled by using a vernier caliper, the longitudinal gap is eliminated after the precise linear slide blocks matched with the linear slide rails are installed, the overall longitudinal gap is basically eliminated, the machine has no longitudinal fluctuation, and the grinding precision is improved.

[0060] The mounting frame of the main motor 510 is located in the internal space of the gantry, and a lifting mechanism 600 is installed between the gantry and the motor mounting frame, the motor mounting frame 500 is driven to be lifted or lowered in the height direction by the lifting mechanism, and the lifting process should be stable and reliable.

[0061] The lower ends of the gantry 400 are mechanically connected with the longitudinal beams 340 of the door-shaped mounting frame through the rotating mechanisms 410, which can adjust the angle, with reference to Figure 6The two vertical poles of the portal frame 400 serve as vertical linear guide columns 430, and linear bearings 420 are installed on the linear guide columns 430, and two linear bearings are fixedly installed with a motor mounting frame 500, and together form a lifting guide assembly. The motor mounting frame 500 is a rectangular frame formed by a combination of steel plates, and the main motor 510 is fixedly installed in the rectangular frame, that is, the motor mounting frame 500 has vertical sliding capability under the sliding assembly of the linear bearing 420. The main motor 510 is vertically arranged, and the main motor shaft is arranged downwardly and has a certain inclination design. Specifically, the bottom frame plate 520 of the motor mounting frame 500 is not horizontally arranged, but has an inclination design in the transverse direction. For example, in the embodiment, the inclination angle β is about 6°, and a grinding wheel 530 (usually a grinding wheel) is installed on the power shaft of the main motor 510. The grinding wheel is a specially sized grinding wheel used for grinding and correcting steel rails.

[0062] In the technical solution, the motor mounting frame 500 is designed as a rectangular frame, which is enclosed by two side plates and top and bottom frame plates, and is fixedly installed by thick steel plate numerical control machining and assembly, thereby having higher installation precision.

[0063] Further, a protective cover 540 is arranged outside the grinding wheel 530, and the protective cover is fixed on the motor mounting seat by butterfly bolts. The protective cover is used to ensure safety during the grinding operation.

[0064] The design points of the motor mounting frame 500 and the installation mode of the main motor can effectively meet the installation strength requirements of the main motor and the grinding wheel. Even when the main motor and the grinding wheel rotate at high speed and effectively grind the steel rail, resonance or excitation of the grinding wheel and the steel rail will not occur.

[0065] Through the special design of the installation mode of the main motor, the installation reliability is greatly improved.

[0066] The traditional grinding wheel and its driving motor of the grinding machine adopt a fixed cantilever structure. Due to the large size of the head part, the distance between the grinding wheel and the rotating shaft is far (about 300 mm). When the grinding wheel contacts the steel rail, the grinding wheel exerts a vertical downward force on the steel rail, and the steel rail exerts a large upward reaction force on the grinding wheel. When the steel rail has a wave grinding disease or the grinding wheel is unbalanced, the force on the grinding wheel changes at any time, and the grinding wheel has a small amplitude of up and down vibration, which affects the grinding quality. Therefore, the portal frame structure is designed, and the rotation center axis of the grinding wheel is no longer perpendicular to the grinding surface by designing the rotation main line of the main motor and the grinding wheel to be non-perpendicular to the surface of the steel rail. The rigidity of the grinding wheel is improved, the slight vibration of the grinding wheel is eliminated, and the grinding precision is improved.

[0067] In this embodiment, the linear sliding bearing and the linear slide rail are combined between the motor mounting frame and the gantry, which improves the stability and accuracy of the linear motion of the motor and the grinding wheel.

[0068] The lifting mechanism 600 is driven by a motor. Specifically, the lifting mechanism 600 includes a screw rod 610, a screw sleeve 620, a bevel gear 630, and a servo motor I 640. The screw rod and the screw sleeve are mechanically matched. The screw sleeve 620 is rotatably mounted on the cross beam of the gantry through a bearing. The bottom end of the screw rod 610 is movably connected to the motor mounting frame 500 through a rotatable hinge structure 611. The height of the screw rod 610 can be raised or lowered by rotating the screw sleeve, which drives the motor mounting frame 500 to be raised or lowered in the height direction, and further drives the position of the grinding wheel to be adjusted in the height direction. A bevel gear 630 is fixedly installed on the screw sleeve. The bevel gear is matched with a bevel gear, which is installed on the motor shaft of the servo motor I 640. The servo motor I 640 is transversely installed on the cross beam of the gantry 400. The servo motor I drives the bevel gear to drive the lifting of the motor mounting frame through the screw rod and the screw sleeve.

[0069] The servo motor I 640 is used to control the lifting of the motor mounting frame, and is also called a lifting motor.

[0070] The lifting stroke range of the grinding wheel is 180 mm. Within the stroke range, the grinding wheel can be manually raised or lowered by pressing the keys. The minimum scale of the lifting is 0.01 mm. When the keys are pressed, the current position of the grinding wheel is displayed in real time. A "zero reset" key is also provided for one-key quick zero reset. A fast mode and a slow mode are also provided to adjust the speed of the lifting of the grinding wheel, and a text prompt is set to remind the user of the current speed mode. The lifting value can also be input manually. For example, if 30 is input in the lifting box, the upward indication light will be on after the execution button is pressed, and the grinding wheel will be lifted by 30 mm. The lifting amplitude change will be displayed at the current position. The physical diagram of the screen of the electric control system is shown in Figure 8

[0071] ​A rotating mechanism 410 is installed between the gantry frame and the portal frame, at the lowest point of both. This rotating mechanism 410 includes a servo motor II 411, a worm gear 412, a large gear 413, a small gear 415, and rotating shafts I 414 and II 416. Rotating shaft 414 is a short shaft mounted on the longitudinal beam 340 of the portal frame via bearings. Rotating shaft I 414 is pivotally connected to the portal frame, and the small gear 415 and the worm gear are respectively mounted at its two ends. Simultaneously, rotating shaft II 416 is fixedly connected to the lower end of the gantry frame and mechanically rotatably connected to the portal frame 300, providing a pivotal axis for rotation of the gantry frame relative to the portal frame 300. A large gear 413 is fixedly mounted on the rotating shaft II 416. This large gear 413 has a one-third sector-shaped profile and is an incomplete gear. The large gear 413 is fixedly mounted on the rotating shaft II 416 via a flat key, and the two rotate synchronously. A small gear 415 meshes with the large gear. The small gear 415 is mounted on a portal frame via a rotating shaft I. The rotating shaft I of the small gear is synchronously connected to the worm gear in the worm gear and worm shaft via a flat key. The worm gear is connected to a motor, and the servo motor II 411 drives the worm gear and worm shaft, and thus the gear assembly, thereby adjusting the tilt angle of the grinding head. The worm gear and worm shaft also have a position self-locking function, achieving stable stopping at any position during adjustment. The design of this rotating mechanism 410 allows the position angle of the grinding wheel in the horizontal and vertical planes to be adjustable, meeting the working requirements of a grinding wheel rotation stroke range of -20 degrees to 80 degrees.

[0072] The servo motor II411 is used to control the angle adjustment of the motor mounting bracket, hence it is also called a rotary motor. (See reference...) Figure 7 .

[0073] To ensure accurate display and control, a worm gear transmission mechanism is designed to complete the rotation of the grinding wheel from the main motor. Its advantages lie in the fixed ratio of the input and output angles, making display and control relatively simple. Specifically, it consists of a worm gear transmission with a transmission ratio of 1:40 and a transmission efficiency of 0.4; coupled with a spur gear transmission with a transmission ratio of 1:2.5 and a transmission efficiency of 0.95.

[0074] In this embodiment, an example is given within the horizontal and vertical planes. Figure 1 The grinding wheel has a rotation range of -20 degrees to 80 degrees. Within this range, the wheel can be manually rotated left or right using a button, with a minimum rotation increment of 0.1 degrees. When the button is pressed, the screen displays the current position of the grinding wheel in real time. To facilitate understanding the wheel's position, the display includes not only numerical values ​​but also illuminated indicators near the wheel's outline. The screen also shows the rotation angle of the electrical control system and the grinding machine's disc-type rotating structure. Figure 7 As shown.

[0075] The rotation angle can also be manually input, if the rotation box input 30, press the execute button, the clockwise rotation indicator light becomes bright, the device will rotate 30° clockwise and stop, the rotation range change will be displayed on the current angle, and vice versa, the screen rotation angle manual input of the electric control system is shown as Figure 9 .

[0076] The traditional rotation mechanism adopts a push rod to push a certain point on the circumference to complete the angle change of the grinding wheel. The structure is relatively simple, but the movement of the push rod on the circumference is not linear, resulting in that the input and output of the machine angle adjustment are not proportional, the value input cannot be fixed, and the electric control is not accurate.

[0077] Therefore, the rotation structure 410 is specially designed, and the worm gear is introduced to quantize the input. Meanwhile, the worm gear transmission is relatively large, the rotation input is more labor-saving, and the worm gear transmission has a position self-locking function, which can be parked at any position without other program setting.

[0078] The control box 700 includes a controller, a relay and a control switch. The functions are integrated, the panel is simple, and the start and stop switches are convenient for on-site operation of the operator. The controller also has an overcurrent protection function to further protect the components in the system. After actual grinding test, the average value of daily construction motor current is 60-70A, so the first condition of the first overcurrent protection is set to 80A. To prevent the overcurrent protection from being activated by instantaneous high load, the second condition of the first overcurrent protection is set to 3 seconds, and only when both conditions are met can the overcurrent protection be activated.

[0079] The control box is controlled by PLC, and the control principle diagram is shown in Figure 7 . In actual operation and grinding, the grinding machine lifting position and rotation angle are adjusted according to different grinding ranges and grinding requirements to remove the defects on the surface of the steel rail and repair the rail profile.

[0080] The main grinding area of the device is the non-working surface of the rail top and the 0-60° part of the working surface. It can also grind the part below 60° of the non-turnout line working surface (the main working area of the turnout grinder).

[0081] The low position locking function is specially designed in the electric control part. After the lowest grinding point is determined, the button is pressed to lock the lowest point of the grinding wheel. At this time, the lifting operation can only be above the set value, and the downward locking cannot be operated. Only after manual locking can the operation continue. There is a text prompt after the operation button is pressed.

[0082] The program function setting of the electric control system of the device is as follows:

[0083] When the grinding is running, the grinding wheel of the grinder is controlled by an independent switch to start and stop.

[0084] The grinding wheel can be raised or lowered in the height direction, and can be rotated in the vertical plane perpendicular to the rail.

[0085] The lifting and rotation angle are set in manual control mode.

[0086] One-key emergency stop during operation.

[0087] 1. Grinding wheel zero position locking

[0088] (1) The grinding wheel lifting range is 0-190mm, and the zero position can be manually locked at any position during the lifting of the grinding wheel;

[0089] (2) Once the zero position is manually locked, the grinding wheel can only be raised and lowered within the space above the zero position (for example, if the zero position is locked at 30mm, the grinding wheel can only be raised and lowered between 30-70mm, and the grinding wheel must stop at the zero position and cannot continue to descend);

[0090] (3) After zero position locking, the scale starts from the zero position and calculates the distance from the zero position, for example, if the zero position is locked at the 30mm position, the scale shows 1mm when the grinding wheel is raised by 1mm, and 10mm when it is raised by 10mm, accurate to 0.01mm.

[0091] Grinding wheel lifting and rotation angle control program interface Figure 8 and Figure 9 .

[0092] (1) Polishing. Press the manual button to start or stop the grinding wheel head.

[0093] (2) Lifting the grinding wheel. Within the lifting range, the grinding wheel can be raised or lowered by manual button (hold the switch to raise or lower continuously, and release to stop); the zero position can be locked during lifting, and the grinding wheel can only be raised or lowered above the zero position after zero position locking;

[0094] (3) Grinding wheel lifting speed. The grinding wheel lifting speed has two states: fast and slow.

[0095] (4) Polishing rotation angle. The polishing machine and the rail are parallel to the zero position (no need to lock), and the polishing machine can rotate the grinding wheel clockwise ±90° and counterclockwise ±90° in the vertical direction perpendicular to the rail. The rotation angle has an automatic rotation function (after manually inputting the specific angle value relative to the zero position, the circuit controls the grinding wheel to automatically rotate to the specified angle and stop. For example, input 30° or -30° on the screen, and the grinding wheel will automatically rotate to 3 / 0° or -30° and stop.)

[0096] Button settings

[0097] The start and stop keys for controlling the polishing wheel head are two (one controls start and the other controls stop), which can adopt reset keys to control the start and stop of the polishing wheel.

[0098] The keys for controlling the lifting of the polishing wheel are two, one for lifting and the other for lowering, which respectively control the lifting and lowering of the polishing wheel (pressing the switch to keep lifting or lowering, and releasing the hand to stop).

[0099] The keys for controlling the rotation angle are two, one for +90 and the other for -90, which respectively control the rotation of the polishing wheel by +90 and -90 degrees (pressing the switch to keep counterclockwise rotation or clockwise rotation, and releasing the hand to stop).

[0100] The zero position locking key is one, which can lock the zero position at any time during operation, and the key adopts a self-locking switch (pressing the key down and pressing it up again).

[0101] The power (emergency stop) switch is one, which controls the power of the polishing machine and can be pressed to stop at any time during operation.

[0102] The total power switch controls the on-off of the total circuit.

[0103] The key for switching the fast and slow gears of the polishing wheel lifting is one, which switches the lifting speed of the polishing wheel.

[0104] Touch screen interface design and display content:

[0105] 1. Real-time stroke scale of polishing wheel lifting (after zero position locking, the scale starts from zero position and calculates the scale upwards, showing the distance scale from zero position, such as locking at 30mm position, lifting 1mm, showing 1mm, lifting 10mm, showing 10mm), accurate to 0.01mm, and with icons showing lifting or lowering, such as up and down arrows (two scales are displayed, one for non-zero position locking state and the other for zero position locking state).

[0106] 2. Real-time angle and state of rotation angle, clearly indicating the state of clockwise or counterclockwise (referring to the automobile speed display instrument panel).

[0107] 5. Remaining power and low power prompt.

[0108] 6. Overcurrent, overtemperature, overvoltage, undervoltage and open-phase prompt.

[0109] 7. The controller has an illuminating lamp.

[0110] The device uses lithium battery as power source, in order to meet the skylight point construction, its capacity needs to ensure the whole machine continuous work 3 hours. According to the actual test, select single piece 72V45Ah battery, each piece can meet the machine continuous construction 1.5 hours above, each machine configuration two batteries can meet the machine continuous construction 3 to 4 hours. The battery is quick replacement structure, can complete the replacement of battery in one minute, neither delay normal construction nor can share the weight of battery.

[0111] The battery not only has the hardware protection plate which can balance the power supply of the battery internal cell, but also protects the real-time use. The battery management system is integrated to monitor the battery parameters through software and real-time protection.

[0112] The daily display content of the battery is: current, voltage, battery remaining capacity, battery cumulative use time, etc.

[0113] The five functions of the battery hardware protection are: high and low temperature protection of charging, single overcharge / overdischarge voltage protection, charging / discharging overcurrent protection, cell balancing function, short circuit protection, etc.

[0114] Another advantage of the embodiment is that the stability of the polishing machine movement is improved by mechanical structure design:

[0115] The linear slide rail assembly is used as the grinding wheel translation structure relying on the main body, effectively eliminating the longitudinal gap, the transmission is smooth and the precision is high, meeting the demand of various polishing positions. With the cooperation of the lead screw transmission, the overall longitudinal gap is basically eliminated, the machine has no longitudinal fluctuation, and the polishing precision is improved.

[0116] The gantry frame structure is used in the lifting mechanism to improve the stiffness of the grinding wheel. Two rotating mechanisms are used as rotating support points to improve the stiffness of the grinding wheel, eliminate the slight vibration of the grinding wheel, reduce the flexible deformation, and improve the polishing precision.

[0117] The lifting and rotating mechanisms of the polishing machine are all changed to servo motor control. The motor rotation is controlled by PLC, and the step angle of single rotation is subdivided, which improves the precision by more than ten times.

[0118] The screen displays the angle and position of the grinding wheel in real time. When the button is operated, the grinding wheel movement is displayed on the screen.

[0119] In summary, the embodiment also has the advantages of improved polishing quality, convenient operation and low use cost.

[0120] The polishing data is quantified and concentrated on the control panel, realizing the visibility and control of the whole polishing process. The feed and angle adjustment are driven by servo motors, improving the accuracy of the polishing position and the precision of the polishing feed. The overall polishing efficiency is improved by more than 20%, saving the valuable "skylight time".

[0121] The whole machine uses lithium battery as power source, avoids the problem of difficult starting of internal combustion engine due to temperature or altitude and the like.

[0122] The working environment is improved and the comfort is improved: the lithium battery clean energy is used, there is no tail gas emission, the motor runs smoothly, the ear noise is low, and the working comfort is improved.

[0123] Electric energy is used for driving, obvious fuel saving is achieved, and the cumulative use cost is low.

[0124] The above-described embodiments are merely preferred embodiments of the utility model, and do not limit the scope of the utility model, and various modifications and improvements of the utility model made by the related personnel in the art without departing from the design spirit of the utility model shall fall within the protection scope of the utility model defined in the claims.

Claims

1. A lithium battery full-automatic rail grinder, comprising a grinding wheel, a main motor, a motor mounting frame, a lifting mechanism, a rotating mechanism, a translation mechanism and a rack, a portal frame, a door-shaped mounting frame, an electric control system, characterized in that: Four track wheels (110) are arranged on the frame, and flanges and lateral limiting wheels (120) are arranged at the edges of the track wheels, and an insulating sleeve (111) is arranged on the surface of the track wheels, and a brake assembly is arranged at one or two track wheels (110), and the frame is pushed to move along the rail, and the grinder is stopped at any position on the rail by operating the brake assembly; The frame (100) is installed with a door-shaped installation frame (300) through a translation mechanism; The lower ends of the portal frame (400) are mechanically connected with the longitudinal beams (340) of the door-shaped installation frame (300) through a rotating mechanism (410) which can adjust the angle; the rotating mechanism (410) comprises a servo motor II (411), a worm gear (412), a large gear (413), a small gear (415), a rotating shaft I (414) and a rotating shaft II (416); the rotating shaft I (414) is mechanically installed on the longitudinal beam (340) of the door-shaped installation frame, the rotating shaft II (416) is fixedly connected with the portal frame and movably connected with the door-shaped installation frame (300), the rotating shaft I (414) is fixedly connected with the small gear (415), the large gear (413) is fixedly installed on the rotating shaft II (416), the small gear (415) is engaged with the large gear, the rotating shaft I (414) is key-connected with the worm gear, and the worm gear is mechanically connected with the motor shaft of the servo motor II (411); the servo motor II is electrically connected with an electric control system, and the grinding rotation angle is adjusted under the instruction of the electric control system; if the parallel position of the rail is set as zero position, the grinding wheel can rotate within a range of ±90° in the vertical direction of the rail; A lifting guide assembly and a lifting mechanism (600) are installed between the portal frame and the motor installation frame (500); the lifting mechanism (600) comprises a lead screw (610), a lead screw sleeve (620), a bevel gear (630) and a servo motor I (640); the lead screw is mechanically connected with the lead screw sleeve, the lead screw sleeve (620) is rotatably installed on the cross beam of the portal frame through a bearing, the lead screw (610) is movably connected with the motor installation frame (500), the lead screw sleeve is mechanically connected with the bevel gear (630), the bevel gear is matched with a bevel gear, the bevel gear is installed on the motor shaft of the servo motor I (640), and the servo motor I is installed on the cross beam of the portal frame (400); the servo motor I is electrically connected with an electric control system, and the motor installation frame (500) is lifted or lowered in the height direction under the instruction of the electric control system; the lifting range is between 0-190mm; The main motor (510) fixedly installed in the motor installation frame (500) has a motor shaft downwardly arranged and an inclination angle β in the vertical plane perpendicular to the rail.

2. A full automatic rail grinder for lithium battery according to claim 1, characterized in that, In the stroke range of the lifting action, the height of the grinding wheel can be manually raised or lowered by the keys, and zero locking can be performed during the lifting process; after zero locking, the grinding wheel can only be raised or lowered above the zero position.

3. A full automatic rail grinder with lithium battery according to claim 1, characterized in that, The large gear is a one-third sector profile incomplete gear.

4. The full-automatic rail grinder with lithium battery according to claim 1, characterized in that, The translation mechanism comprises linear slide rail assemblies and screw rod transmission mechanisms, the lower end of the door-shaped mounting frame is mechanically connected with the rack through four linear slide rail assemblies, the screw rod in the screw rod transmission mechanism is rotatably installed on the rack through a bearing assembly and is longitudinally arranged, and the screw sleeve sleeve in the screw rod transmission mechanism is fixedly installed on the door-shaped mounting frame.

5. A full automatic rail grinder for lithium battery according to claim 4, characterized in that, The end of the screw rod is further provided with a chain wheel, and a hand wheel is connected through a chain transmission, the hand wheel is installed on a support, the support is a cantilever support extending from the sub-frame and fixedly welded, and a chain transmission mechanism is installed inside.

6. A full automatic rail grinder with lithium battery according to claim 1, characterized in that, The lifting guide assembly comprises two linear guide columns (430) installed on the portal frame (400) and a linear bearing installed on the motor mounting rack (500), and the linear guide column and the linear bearing are in sliding fit.

7. A full automatic rail grinder with lithium battery according to claim 1, characterized in that, A touch screen is arranged at the upper position of the door-shaped mounting frame.

8. A full automatic rail grinder with lithium battery according to claim 1, characterized in that, The motor mounting rack is a rectangular frame formed by steel plates.

9. A full automatic rail grinder with lithium battery according to claim 1, characterized in that, The rack comprises two left and right sub-frames and is detachably connected through steel pipe insertion and bolt fixation.

10. The full-automatic rail grinder with lithium battery according to claim 1, characterized in that, A lithium battery, a storage platform and a control box are fixedly installed on the rack.

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