Movable maintenance device for railway track

Abstract

The invention provides a movable maintenance device for a railway track, and belongs to the technical field of railway track maintenance, the device comprises a track part, a mobile vehicle assembly, a driving traveling device, a power supply assembly, a polishing part, a speed regulation control part and a PLC control system; the moving trolley assembly is located on the top of the rail component and moves in the rail top face direction of the two rails. The travelling crane driving device is connected with the moving trolley assembly; the power supply assembly is located at and connected with the top of the mobile vehicle assembly; the grinding component is connected with the moving trolley assembly, and the rail top face and the rail web faces on the two sides of the rail are ground through the grinding component. The speed regulation control part is located at the top of the moving trolley assembly and connected with the moving trolley assembly. In a seriously-rusted area needing to be polished, the moving speed is automatically reduced, and the polishing assembly is protected against excessive abrasion or even damage; in the area without polishing, the moving speed is automatically increased, and the adaptability and the working efficiency of the device in different rail rusting states are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of railway track maintenance, and in particular relates to a mobile maintenance device for railway tracks. Background Art

[0002] Rails are the main components of railway tracks. Usually, two parallel rails form a track component. In practice, most rails are exposed to the air after laying. Under the alternating erosion of exposure to the sun and rain, the rails are prone to rust. Since the wheels are in direct contact with the top surface of the rails, it is the main contact surface for the wheels to transmit weight and traction. The inner side rail waist surfaces of the two rails are matched with the limit rings of the wheels to guide the wheels to stay in the correct track position, while the outer side rail waist surfaces can suppress abnormal wear of the rails in the straight area. Therefore, it is necessary to grind and remove rust from the top surface and the rail waist surfaces on both sides of the rusted rails.

[0003] Authorization announcement No. CN109577119B discloses a mobile rail rust removal device that can work in multiple positions for railway maintenance, including a traveling mechanism, a rust removal mechanism and a control mechanism. The main body of the traveling mechanism is a bottom plate of a plate-like structure, the rust removal mechanism is composed of a supporting assembly and a rotating assembly, and the main body of the control mechanism is a control console of a box structure; the entire device is driven forward or backward on the track by the traveling mechanism, and rust removal can be performed in both the front and rear positions of the device, thereby reducing the labor intensity of the operator and improving the rust removal efficiency; the rust removal groove and the grinding wheel in the rust removal mechanism are both left-right symmetrical structures, and the bevel gear I is driven by the driving motor II to engage and rotate with the bevel gear II, so that the grinding wheel is finally used to grind and remove rust on the left and right rails of the track at the same time, so that the left and right positions of the device can be rusted synchronously, greatly improving the rust removal efficiency of the track.

[0004] Although the patent can remove rust from the rails on the left and right sides of the track, the rust conditions of the rails to be polished are different, so it is impossible to adjust the speed of the device according to the rust conditions of the rails. That is, in the prior art, there may be a section of the rails to be polished that does not need to be polished, and there may be a section that needs to be polished for a long time, and there may even be situations where the area that needs to be polished and the area that does not need to be polished appear alternately. Since most of the existing mobile maintenance devices use a constant speed forward motion device, when the movement speed is fast, in the case of severe rust, the polishing component is subject to greater resistance and is prone to rapid wear or even damage. When the movement speed is slow, it takes too long to pass through the area that does not need to be polished, resulting in overall low efficiency. Therefore, the mobile maintenance device in the prior art cannot be applied to this dynamic scene where rust alternates. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a mobile maintenance device for railway tracks, which effectively solves the problem that most of the mobile maintenance devices in the prior art adopt a constant speed forward motion device. When the movement speed is faster, in the case of severe rust, the grinding components are subject to greater resistance and are prone to rapid wear or even damage. When the movement speed is slower, the time spent in the unnecessary grinding area is too long, resulting in overall low efficiency. Therefore, the mobile maintenance device in the prior art cannot be applied to the dynamic scene where rust alternates.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a mobile maintenance device for railway tracks, comprising a track component containing two rails, and also comprising a moving vehicle assembly, a driving vehicle device, a power supply assembly, a grinding component, a speed control component and a PLC control system; the moving vehicle assembly is located at the top of the track component, and the moving vehicle assembly moves along the rail top surface direction of the two rails; the driving vehicle device is connected to the moving vehicle assembly; the power supply assembly is located at the top of the moving vehicle assembly and connected thereto; the grinding component is connected to the moving vehicle assembly, and the rail top surface and the rail waist surfaces on both sides of the rail are ground by the grinding component; the speed control component is located at the top of the moving vehicle assembly and connected thereto.

[0007] Preferably, the mobile vehicle assembly includes a base plate, a connecting block, a drive device mounting plate, a counterweight block and three sets of walking wheel assemblies, the connecting block is located at the bottom of the base plate and connected thereto, the drive device mounting plate is located at the bottom of the base plate and connected thereto, the counterweight block is located at the top of the drive device mounting plate and connected thereto, and a drive device inspection port is opened on the base plate.

[0008] Preferably, the walking wheel assembly includes a rotating shaft, a bearing seat assembly, a walking wheel and a fixing pin. The rotating shaft passes through the connecting block, the bearing seat assembly and the walking wheel. Both ends of the rotating shaft are provided with a first shoulder and a threaded hole. The connection between the walking wheel and the rotating shaft is achieved by screwing the fixing pin into the threaded hole.

[0009] Preferably, the driving vehicle device includes a traction motor, a main pulley, a slave pulley and a belt. The traction motor is located on the top of the driving device mounting plate and is fixedly connected thereto. A main pulley is installed on the protruding shaft of the traction motor. The slave pulley is installed on the walking wheel assembly. The main pulley and the slave pulley are fixedly connected by the belt.

[0010] Preferably, the grinding component includes a grinding frame assembly, two top grinding assemblies and two groups of side grinding assemblies, the grinding frame assembly includes a main support frame, an electric push rod assembly, a main connecting plate and cross reinforcement ribs, the main support frame is located on the top of the bottom plate and connected thereto, the main body of the main support frame is a U-shaped structure with a folded edge, the electric push rod assembly passes through the top plate of the main support frame and is connected thereto, the extended shafts of the two electric push rod assemblies are connected to the main connecting plate by a locking nut, the main connecting plate is driven to rise and fall by the extension and retraction of the electric push rod assembly, and the cross reinforcement rib is located at the bottom of the top plate of the main support frame and is fixed thereto The top grinding assembly comprises a motor fixing frame 1, a grinding motor, a grinding disc, a first reinforcing rib and a second reinforcing rib; the motor fixing frame 1 is fixedly connected to the main connecting plate, the grinding motor is located inside the motor fixing frame 1 and is fixedly connected thereto, the grinding disc is connected to the grinding motor, the first reinforcing rib and the second reinforcing rib are both fixedly connected to the main connecting plate, the side grinding assembly comprises a motor fixing frame 2, a grinding motor, a grinding disc and a third reinforcing rib, the motor fixing frame 2 and the third reinforcing rib are both fixedly connected to the main connecting plate, and the third reinforcing rib is also fixedly connected to the motor fixing frame 2.

[0011] Preferably, the speed control component includes a pressure box assembly, a guide assembly and a piston rod assembly, the pressure box assembly is located on the top of the base plate and fixedly connected thereto, the guide assembly is connected to the pressure box assembly, and the piston rod assembly is located inside the pressure box assembly and extends into the inside of the guide assembly.

[0012] Preferably, the pressure box assembly includes a pressure box body, a pressure box mounting plate, a pressure box end plate, a guide box pad, a first pressure sensor and a second pressure sensor, the pressure box mounting plate is located on the top of the base plate and connected thereto, the pressure box body is located on the top of the pressure box mounting plate and connected thereto, the pressure box end plate and the pressure box body are connected by bolts, and the closed area formed by the pressure box body and the pressure box end plate is divided into two areas by a piston rod assembly, wherein the area close to the pressure box end plate is area A, and the area away from the pressure box end plate is area B, the first pressure sensor is connected in area A, and the second pressure sensor is connected in area B, and the guide box pad is located on the top of the pressure box mounting plate and connected thereto.

[0013] Preferably, the guide assembly includes a guide box body, a first spring, a second spring, a spring connecting plate, a main push rod, a guide rail, a pressure plate and a clamping nut; the guide box body is connected to the pressure box body, one end of the first spring is connected to the guide box body, and the other end is connected to the spring connecting plate, the main push rod is fixedly connected to the spring connecting plate, the main push rod can slide along the guide rail, the guide rail is fixedly connected to the guide box body, the pressure plate is fixedly connected to the spring connecting plate, a spring guide groove is provided on the side of the spring connecting plate close to the second spring, and a clamping groove is provided on the main push rod, and the main connecting plate is clamped in the clamping groove by the descent of the two electric push rod assemblies.

[0014] Preferably, the piston rod assembly includes a piston rod and a piston, the piston is located inside the pressure box body, the piston rod passes through the fitting surface between the pressure box body and the guide box body, the second spring, the spring connecting plate, the pressure plate and the clamping nut, and a second shoulder is provided at one end of the piston rod close to the spring connecting plate.

[0015] The present invention also provides a method for using a mobile maintenance device for railway tracks, the method comprising the following steps:

[0016] S1, when used for the first time, after manually grinding the rail top surface and the rail waist surfaces on both sides of a certain length of rail, the device is placed on the rail top surfaces of the two rails to be ground, and the main connecting plate is engaged in the card slot through the extension and contraction of the electric push rod assembly. At this time, the top grinding assembly is in contact with the ground rail top surface, and the side grinding assembly is in contact with the ground rail waist surface;

[0017] S2, start all grinding motors and traction motors, the grinding disc rotates, and the moving vehicle assembly moves forward along the rail top surface of the rail component;

[0018] S3, when the grinding component passes through the track component to be polished that does not need to be polished, there is no pressure difference between area A and area B in the closed area of ​​the pressure box assembly, the spring is in a natural state, and the moving vehicle assembly passes at the traction speed provided by the traction motor; when the grinding component passes through the track component to be polished that needs to be polished, resistance will be generated, and the spring will be compressed to push the piston rod assembly to move backward as a whole. At this time, the pressure in area A of the closed area of ​​the pressure box assembly is greater than the pressure in area B. The pressure in area A is fed back to the PLC control system through the first pressure sensor, and the pressure in area B is fed back to the PLC control system through the second pressure sensor. The PLC control system adjusts the speed of the traction motor according to the difference between the two.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) The present invention provides a mobile maintenance device for railway tracks. Through the arrangement of a mobile vehicle assembly, a driving device, a power supply assembly, a grinding component, a speed control component and a PLC control system, the grinding component can be closely attached to the track surface for effective grinding, so that the grinding component of the present invention can grind the rail top surface and the rail waist surfaces on both sides at the same time, thereby improving the comprehensiveness and quality of the rail surface grinding.

[0021] (2) The present invention provides a mobile maintenance device for railway tracks. The speed control component is set to automatically adjust the speed of the traction motor according to the pressure difference to achieve intelligent speed control. In areas where severe corrosion occurs and grinding is required, the moving speed is automatically reduced to protect the grinding components from excessive wear or even damage. In areas where grinding is not required, the moving speed is automatically increased, thereby improving the adaptability and work efficiency of the present invention under different rail corrosion conditions.

[0022] (3) The present invention provides a mobile maintenance device for railway tracks. When encountering a severely corroded area, although the rotation speed of the traction motor decreases, the grinding assembly is subjected to a stable thrust due to the existence of the pressure difference and the elastic force of the compressed spring, thereby ensuring the continuity of the rust removal process.

[0023] (4) The present invention provides a mobile maintenance device for railway tracks, which has a simple structure and is easy to operate. The grinding disc can be easily replaced by lifting and lowering the main connecting plate through the extension and retraction of the electric push rod assembly. At the same time, the power supply assembly is integrated into the mobile vehicle assembly to reduce dependence on external power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an overall schematic diagram of the present invention;

[0025] Figure 2 It is a schematic diagram of the structure of the mobile vehicle assembly of the present invention;

[0026] Figure 3 yes Figure 2 Schematic diagram from another perspective;

[0027] Figure 4 It is a schematic diagram of the structure of the travel wheel assembly of the present invention;

[0028] Figure 5 It is a schematic diagram of the structure of the driving device of the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of the grinding component of the present invention;

[0030] Figure 7 It is a schematic diagram of the structure of the grinding frame assembly of the present invention;

[0031] Figure 8It is a schematic diagram of the structure of the top grinding assembly of the present invention;

[0032] Fig. 9 It is a structural schematic diagram of the speed control component of the present invention;

[0033] Fig.10 is a schematic structural diagram of a pressure box assembly of the present invention;

[0034] Fig.11 It is a schematic diagram of the guide assembly of the present invention when the guide box body is removed;

[0035] Fig.12 It is a structural schematic diagram of the spring connecting plate of the present invention;

[0036] Fig.13 It is a structural schematic diagram of the piston rod assembly of the present invention.

[0037] In the figure: 100, mobile vehicle assembly; 110, bottom plate; 111, drive device inspection port; 120, connection block; 130, drive device mounting plate; 140, counterweight block; 150, walking wheel assembly; 151, rotating shaft; 152, first shaft shoulder; 153, threaded hole; 154, bearing seat assembly; 155, walking wheel; 156, fixing nail; 200, driving travel device; 210, traction motor; 220, main pulley; 230, slave pulley; 240, belt; 300, grinding frame assembly; 310, main support frame; 320, electric push rod assembly; 330, main connecting plate; 340, cross reinforcement rib; 400, power supply assembly; 500, top grinding assembly; 510, motor fixing frame 1; 520, grinding motor; 530, grinding Grinding disc; 540, first reinforcing rib; 550, second reinforcing rib; 600, side grinding assembly; 610, motor fixing frame 2; 620, third reinforcing rib; 700, pressure box assembly; 710, pressure box body; 720, pressure box mounting plate; 730, pressure box end plate; 740, guide box pad; 750, first pressure sensor; 760, second pressure sensor; 800, guide assembly; 810, guide box body; 820, first spring; 830, second spring; 840, spring connecting plate; 841, spring guide groove; 850, main push rod; 851, slot; 860, guide rail; 870, pressure plate; 880, clamping nut; 900, piston rod assembly; 910, piston rod; 911, second shaft shoulder; 920, piston. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] It should be pointed out that the terms "upper", "lower", "left", "right", "top", "bottom", "inside", "outside" and the like indicating directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0040] It should be understood that, in the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense.

[0041] Example 1

[0042] See attached Figures 1 to 13 A mobile maintenance device for railway tracks provided in this embodiment 1 includes a track component including two rails, and also includes a moving vehicle assembly 100, a driving vehicle device 200, a power supply assembly 400, a grinding component, a speed control component and a PLC control system; the moving vehicle assembly 100 is located at the top of the track component, and the moving vehicle assembly 100 moves along the rail top surface direction of the two rails; the driving vehicle device 200 is connected to the moving vehicle assembly 100; the power supply assembly 400 is located at the top of the moving vehicle assembly 100 and is fixedly connected thereto; the grinding component is connected to the moving vehicle assembly 100, and the rail top surface and the rail waist surfaces on both sides of the rail are ground by the grinding component; the speed control component is located at the top of the moving vehicle assembly 100 and is connected thereto.

[0043] The mobile vehicle assembly 100 includes a base plate 110, a connecting block 120, a drive device mounting plate 130, a counterweight block 140 and three sets of walking wheel assemblies 150. The main body of the base plate 110 is a rectangular structure. The connecting block 120 is located at the bottom of the base plate 110 and is fixedly connected thereto. The drive device mounting plate 130 is located at the bottom of the base plate 110 and is fixedly connected thereto. The drive device mounting plate 130 is a U-shaped structure. The counterweight block 140 is located at the top of the drive device mounting plate 130 and is fixedly connected thereto. A drive device inspection port 111 is opened on the base plate 110. Usually, a thin plate (not shown in the figure) is arranged at the drive device inspection port 111 to prevent excessive impurities from falling into the driving vehicle 200.

[0044] The traveling wheel assembly 150 includes a rotating shaft 151, a bearing seat assembly 154, a traveling wheel 155 and a fixing pin 156. The rotating shaft 151 passes through the connecting block 120, the bearing seat assembly 154 and the traveling wheel 155. Both ends of the rotating shaft 151 are provided with a first shaft shoulder 152 and a threaded hole 153. The fixing pin 156 is screwed into the threaded hole 153 to realize the connection between the traveling wheel 155 and the rotating shaft 151. The traveling wheel 155 is made of wear-resistant materials such as polytetrafluoroethylene. A limiting ring is provided on the traveling wheel 155 to ensure that the traveling wheel 155 does not fall into the track component when the device is traveling. This principle is similar to the structural design of a train wheel.

[0045] The driving device 200 includes a traction motor 210, a main pulley 220, a slave pulley 230 and a belt 240. The traction motor 210 is located on the top of the driving device mounting plate 130 and is fixedly connected thereto. The traction motor 210 is generally a variable frequency motor. The main pulley 220 is installed on the extended shaft of the traction motor 210. The slave pulley 230 is installed on the walking wheel assembly 150 of the middle group. The main pulley 220 and the slave pulley 230 are fixedly connected by the belt 240.

[0046] The grinding parts include a grinding frame assembly 300, two top grinding assemblies 500 and two sets of side grinding assemblies 600, each set of side grinding assemblies 600 includes two side grinding assemblies 600, the grinding frame assembly 300 includes a main support frame 310, an electric push rod assembly 320, a main connecting plate 330 and a cross reinforcement rib 340, the main support frame 310 is located on the top of the bottom plate 110 and is fixedly connected thereto, the main body of the main support frame 310 is a U-shaped structure with a folded edge, and the main support frame 310 is The side plate is provided with an arc groove, the electric push rod assembly 320 passes through the top plate of the main support frame 310 and is connected thereto, the extended shafts of the two electric push rod assemblies 320 are connected to the main connecting plate 330 through the locking nut, the main connecting plate 330 is lifted and lowered by the extension and contraction of the electric push rod assembly 320, the cross reinforcement rib 340 is located at the bottom of the top plate of the main support frame 310 and is fixedly connected thereto, the top grinding assembly 500 and the side grinding assembly 600 are both connected to the main connecting plate 330, and the top grinding assembly 500 and the side grinding assembly 600 are connected to the main connecting plate 330. The assembly 500 includes a motor fixing frame 510, a grinding motor 520, a grinding disc 530, a first reinforcing rib 540 and a second reinforcing rib 550; the motor fixing frame 510 is fixedly connected to the main connecting plate 330, the grinding motor 520 is located inside the motor fixing frame 510 and is fixedly connected thereto, the grinding disc 530 is connected to the grinding motor 520, the first reinforcing rib 540 and the second reinforcing rib 550 are both fixedly connected to the main connecting plate 330, and the side grinding assembly 600 includes a motor fixing frame 510 and a grinding motor 520. The second fixed frame 610, the grinding motor 520, the grinding disc 530 and the third reinforcing rib 620, the second motor fixed frame 610 and the third reinforcing rib 620 are all fixedly connected to the main connecting plate 330, and the third reinforcing rib 620 is also fixedly connected to the second motor fixed frame 610. The distance between the top grinding assembly 500 and the main connecting plate 330 is greater than the distance between the side grinding assembly 600 and the main connecting plate 330. The grinding motor 520 and the grinding disc 530 are both mature existing technologies and will not be described in detail here.

[0047] The speed control component includes a pressure box assembly 700, a guide assembly 800 and a piston rod assembly 900. The pressure box assembly 700 is located on the top of the base plate 110 and is fixedly connected thereto. The guide assembly 800 is connected to the pressure box assembly 700. The piston rod assembly 900 is located inside the pressure box assembly 700 and extends into the inside of the guide assembly 800.

[0048] The pressure box assembly 700 includes a pressure box body 710, a pressure box mounting plate 720, a pressure box end plate 730, a guide box pad 740, a first pressure sensor 750 and a second pressure sensor 760. The pressure box mounting plate 720 is located on the top of the base plate 110 and is fixedly connected thereto. The pressure box body 710 is located on the top of the pressure box mounting plate 720 and is fixedly connected thereto. The pressure box body 710 is closed on five sides. The pressure box end plate 730 and the pressure box body 710 are connected by bolts. The closed area formed by the pressure box body 710 and the pressure box end plate 730 is divided into two areas by the piston rod assembly 900, wherein the area close to the pressure box end plate 730 is area A, and the area away from the pressure box end plate 730 is area B. The first pressure sensor 750 is connected in area A, and the second pressure sensor 760 is connected in area B. The guide box pad 740 is located on the top of the pressure box mounting plate 720 and is connected thereto.

[0049] The guide assembly 800 includes a guide box body 810, a first spring 820, a second spring 830, a spring connecting plate 840, a main push rod 850, a guide rail 860, a pressure plate 870 and a compression nut 880; the guide box body 810 is connected to the pressure box body 710, the guide box body 810 is located on the top of the guide box pad 740, the opening of the guide box body 810 is facing away from the pressure box body 710, one end of the first spring 820 is connected to the guide box body 810, and the other end is connected to the spring The main push rod 850 is connected to the spring connecting plate 840, the main push rod 850 is fixedly connected to the spring connecting plate 840, the main push rod 850 can slide along the guide rail 860, the guide rail 860 is fixedly connected to the guide box body 810, the pressure plate 870 is fixedly connected to the spring connecting plate 840, a spring guide groove 841 is provided on the side of the spring connecting plate 840 close to the second spring 830, and a clamping groove 851 is provided on the main push rod 850, and the main connecting plate 330 is clamped in the clamping groove 851 by the descent of the two-piece electric push rod assembly 320.

[0050] The piston rod assembly 900 includes a piston rod 910 and a piston 920, which are detachably connected. The piston 920 is located inside the pressure box body 710. The piston rod 910 passes through the fitting surface between the pressure box body 710 and the guide box body 810, the second spring 830, the spring connecting plate 840, the pressure plate 870 and the clamping nut 880. A second shoulder 911 is provided at one end of the piston rod 910 close to the spring connecting plate 840. Normally, the piston 920 is located in the middle of the closed area of ​​the pressure box assembly 700 as the initial position.

[0051] It should be noted that the two ends of the first spring 820 of the present invention are fixedly connected, and the second spring is sleeved on the piston rod 910 and is limited by the spring guide groove 841. Figure 1As shown, when the two rails of the present invention are being polished, due to the inconsistent degree of rust, the resistance encountered during polishing will be different. In a local range, part of the first spring 820 is compressed, and the other part of the first spring 820 is pulled, and the main connecting plate 330 tends to deflect. However, due to the joint action of the two sets of side polishing assemblies 600 and the second spring 830 and the main connecting plate 330 being engaged in the slot 851, the main connecting plate 330 will not rotate. Therefore, when the present invention is in use, when the polishing parts encounter rust, both the first spring 820 and the second spring 830 are compressed. This pushes the piston rod 900 to move backward as a whole, causing the volume of area A in the closed area of ​​the pressure box assembly 700 to decrease and the pressure to increase, while the volume of area B increases and the pressure decreases. That is, when the present invention is used to remove rust on the rails, the dynamic resistance value is converted into a dynamic pressure difference, and the dynamic pressure difference is fed back to the PLC control system. The speed of the traction motor 210 is dynamically adjusted through the PLC control system. When the pressure difference is eliminated, that is, when the present invention passes through the grinding area that is no longer needed, the first spring 820 and the second spring 830 are reset, and the piston 920 is reset to its original position.

[0052] That is to say, through the setting of the speed control component, the PLC control system automatically adjusts the speed of the traction motor 210 according to the pressure difference, realizing intelligent speed control. In areas where severe rust occurs and grinding is required, the moving speed is automatically reduced to protect the grinding components from excessive wear or even damage; in areas where grinding is not required, the moving speed is automatically increased, thereby improving the adaptability and work efficiency of the present invention under different rail corrosion conditions.

[0053] Furthermore, the power supply assembly 400 of the present invention is usually a diesel engine generator set or a battery pack, thereby reducing the dependence of the present invention on external power supply.

[0054] The present invention also provides a method for using a mobile maintenance device for railway tracks, the method comprising the following steps:

[0055] S1, when used for the first time, after manually grinding the rail top surface and the rail waist surfaces on both sides of a certain length of rail, the device is placed on the rail top surfaces of the two rails to be ground, and the main connecting plate 330 is engaged in the card slot 851 through the extension and contraction of the electric push rod assembly 320. At this time, the top grinding assembly 500 is in contact with the ground rail top surface, and the side grinding assembly 600 is in contact with the ground rail waist surfaces on both sides.

[0056] S2, all the grinding motors 520 and the traction motor 210 are started, the grinding disc 530 rotates, and the moving vehicle assembly 100 moves forward along the rail top surface of the rail component.

[0057] S3, when the grinding component passes through the track component to be polished that does not need to be polished, there is no pressure difference between area A and area B in the closed area of ​​the pressure box assembly 700, the spring is in a natural state, and the moving vehicle assembly 100 passes at the traction speed provided by the traction motor 210; when the grinding component passes through the track component to be polished that needs to be polished, resistance will be generated, and the spring will be compressed to push the piston rod assembly 900 to move backward as a whole. At this time, the pressure in area A of the closed area of ​​the pressure box assembly 700 is greater than the pressure in area B. The pressure in area A is fed back to the PLC control system through the first pressure sensor 750, and the pressure in area B is fed back to the PLC control system through the second pressure sensor 760. The PLC control system adjusts the speed of the traction motor 210 according to the difference between the two.

[0058] It is not difficult to understand that when the present invention encounters a severely corroded area, although the rotation speed of the traction motor 210 decreases, due to the existence of the pressure difference and the elastic force of the compressed spring, the grinding assembly is subjected to a stable thrust, thereby ensuring the continuity of the rust removal process.

[0059] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mobile maintenance device for railway tracks, comprising a track component including two rails, characterized in that: The invention also comprises a moving vehicle assembly (100), a driving vehicle device (200), a power supply assembly (400), a grinding component, a speed control component and a PLC control system; the moving vehicle assembly (100) is located at the top of the track assembly, and the moving vehicle assembly (100) moves along the rail top surface direction of two rails; the driving vehicle device (200) is connected to the moving vehicle assembly (100); the power supply assembly (400) is located at the top of the moving vehicle assembly (100) and is connected thereto; the grinding component is connected to the moving vehicle assembly (100), and the rail top surface and rail waist surfaces on both sides of the rail are ground by the grinding component; the speed control component is located at the top of the moving vehicle assembly (100) and is connected thereto.

2. The mobile maintenance device for railway tracks according to claim 1, characterized in that: The mobile vehicle assembly (100) comprises a base plate (110), a connection block (120), a drive device mounting plate (130), a counterweight block (140) and three sets of walking wheel assemblies (150); the connection block (120) is located at the bottom of the base plate (110) and connected thereto; the drive device mounting plate (130) is located at the bottom of the base plate (110) and connected thereto; the counterweight block (140) is located at the top of the drive device mounting plate (130) and connected thereto; and a drive device inspection port (111) is provided on the base plate (110).

3. The mobile maintenance device for railway tracks according to claim 2, characterized in that: The travel wheel assembly (150) comprises a rotating shaft (151), a bearing seat assembly (154), a travel wheel (155) and a fixing pin (156); the rotating shaft (151) passes through the connecting block (120), the bearing seat assembly (154) and the travel wheel (155); both ends of the rotating shaft (151) are provided with a first shaft shoulder (152) and a threaded hole (153); the travel wheel (155) and the rotating shaft (151) are connected by screwing the fixing pin (156) into the threaded hole (153).

4. The mobile maintenance device for railway tracks according to claim 2, characterized in that: The driving vehicle device (200) comprises a traction motor (210), a main pulley (220), a secondary pulley (230) and a belt (240); the traction motor (210) is located on the top of the driving device mounting plate (130) and is fixedly connected thereto; a main pulley (220) is installed on the extended shaft of the traction motor (210); the secondary pulley (230) is installed on the walking wheel assembly (150); and the main pulley (220) and the secondary pulley (230) are fixedly connected via the belt (240).

5. The mobile maintenance device for railway tracks according to claim 2, characterized in that: The grinding component comprises a grinding frame assembly (300), two top grinding assemblies (500) and two sets of side grinding assemblies (600); the grinding frame assembly (300) comprises a main support frame (310), an electric push rod assembly (320), a main connecting plate (330) and a cross reinforcing rib (340); the main support frame (310) is located on the top of the bottom plate (110) and connected thereto; the main body of the main support frame (310) is a U-shaped structure with a folded edge; The electric push rod assembly (320) passes through the top plate of the main support frame (310) and is connected thereto, and the extended shafts of the two electric push rod assemblies (320) are connected to the main connecting plate (330) through a locking nut, and the main connecting plate (330) is lifted and lowered by the extension and contraction of the electric push rod assembly (320), and the cross reinforcement rib (340) is located at the bottom of the top plate of the main support frame (310) and is fixedly connected thereto, and the top grinding assembly (500) includes The motor fixing frame (510) comprises a motor fixing frame (510), a grinding motor (520), a grinding disc (530), a first reinforcing rib (540) and a second reinforcing rib (550); the motor fixing frame (510) is fixedly connected to the main connecting plate (330); the grinding motor (520) is located inside the motor fixing frame (510) and is fixedly connected thereto; the grinding disc (530) is connected to the grinding motor (520); the first reinforcing rib (540) and the second reinforcing rib (550) are fixedly connected to the main connecting plate (330); The second reinforcing ribs (550) are fixedly connected to the main connecting plate (330), the side grinding assembly (600) includes a second motor fixing frame (610), a grinding motor (520), a grinding disc (530) and a third reinforcing rib (620), the second motor fixing frame (610) and the third reinforcing rib (620) are fixedly connected to the main connecting plate (330), and the third reinforcing rib (620) is also fixedly connected to the second motor fixing frame (610).

6. The mobile maintenance device for railway tracks according to claim 5, characterized in that: The speed control component includes a pressure box assembly (700), a guide assembly (800) and a piston rod assembly (900); the pressure box assembly (700) is located on the top of the base plate (110) and is fixedly connected thereto; the guide assembly (800) is connected to the pressure box assembly (700); and the piston rod assembly (900) is located inside the pressure box assembly (700) and extends into the inside of the guide assembly (800).

7. The mobile maintenance device for railway tracks according to claim 6, characterized in that: The pressure box assembly (700) comprises a pressure box body (710), a pressure box mounting plate (720), a pressure box end plate (730), a guide box pad (740), a first pressure sensor (750) and a second pressure sensor (760). The pressure box mounting plate (720) is located on the top of the bottom plate (110) and connected thereto. The pressure box body (710) is located on the top of the pressure box mounting plate (720) and connected thereto. The pressure box end plate (730) and the pressure box body (760) are fastened together by bolts. 10) is connected, and the closed area formed by the pressure box body (710) and the pressure box end plate (730) is divided into two areas by the piston rod assembly (900), wherein the area close to the pressure box end plate (730) is area A, and the area away from the pressure box end plate (730) is area B, the first pressure sensor (750) is connected in area A, and the second pressure sensor (760) is connected in area B, and the guide box pad (740) is located on the top of the pressure box mounting plate (720) and is connected thereto.

8. The mobile maintenance device for railway tracks according to claim 7, characterized in that: The guide assembly (800) comprises a guide box body (810), a first spring (820), a second spring (830), a spring connecting plate (840), a main push rod (850), a guide rail (860), a pressure plate (870) and a clamping nut (880); the guide box body (810) is connected to the pressure box body (710), one end of the first spring (820) is connected to the guide box body (810), and the other end is connected to the spring connecting plate (840), and the main push rod (850) is fixed to the spring connecting plate (840). The main push rod (850) is connected with the guide rail (860), the guide rail (860) is fixedly connected to the guide box body (810), the pressure plate (870) is fixedly connected to the spring connecting plate (840), a spring guide groove (841) is provided on the side of the spring connecting plate (840) close to the second spring (830), and a clamping groove (851) is provided on the main push rod (850), and the main connecting plate (330) is clamped in the clamping groove (851) by the descent of the two electric push rod assemblies (320).

9. The mobile maintenance device for railway tracks according to claim 8, characterized in that: The piston rod assembly (900) includes a piston rod (910) and a piston (920), wherein the piston (920) is located inside the pressure box body (710), and the piston rod (910) passes through the fitting surface between the pressure box body (710) and the guide box body (810), the second spring (830), the spring connecting plate (840), the pressure plate (870) and the clamping nut (880), and a second shoulder (911) is provided at one end of the piston rod (910) close to the spring connecting plate (840).

10. The method for using the mobile maintenance device for railway tracks according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: S1, when used for the first time, after manually grinding the rail top surface and the rail waist surfaces on both sides of a certain length of rail, the device is placed on the rail top surfaces of the two rails to be ground, and the main connecting plate (330) is engaged in the card slot (851) by extending and retracting the electric push rod assembly (320). At this time, the top grinding assembly (500) is in contact with the ground rail top surface, and the side grinding assembly (600) is in contact with the ground rail waist surface; S2, all the grinding motors (520) and the traction motor (210) are started, the grinding disc (530) rotates, and the moving vehicle assembly (100) moves forward along the rail top surface of the rail component; S3, when the grinding component passes through the track component to be polished that does not need to be polished, there is no pressure difference between the A area and the B area of ​​the closed area of ​​the pressure box assembly (700), the spring is in a natural state, and the moving vehicle assembly (100) passes at the traction speed provided by the traction motor (210); when the grinding component passes through the track component to be polished that needs to be polished, resistance is generated, and the spring is compressed to push the piston rod assembly (900) to move backward as a whole. At this time, the pressure in the A area of ​​the closed area of ​​the pressure box assembly (700) is greater than the pressure in the B area. The pressure in the A area is fed back to the PLC control system through the first pressure sensor (750), and the pressure in the B area is fed back to the PLC control system through the second pressure sensor (760). The PLC control system adjusts the rotation speed of the traction motor (210) according to the difference between the two.

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