CN110886270B

CN110886270B - Railway track cleaning and maintaining device

Info

Publication number: CN110886270B
Application number: CN201911202501.7A
Authority: CN
Inventors: 胡月; 李虎; 张康
Original assignee: Jinan Rail Transit Group Co Ltd
Current assignee: Jinan Rail Transit Group Co Ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2021-06-29
Anticipated expiration: 2039-11-29
Also published as: CN110886270A

Abstract

The invention relates to a railway track cleaning and maintaining device which comprises a frame, wherein the frame comprises a first frame and a second frame which are connected with each other, the first frame is arranged under the second frame, the lower part of the first frame is provided with a track wheel, the lower part of the second frame is provided with a travelling wheel, the track wheel can drive the frame to run along a railway track, and the travelling wheel can drive the frame to run along the ground; the distance value between the first frame and the second frame in the vertical direction can be adjusted, so that the distance between the lowest point of the track wheel and the lowest point of the walking wheel in the vertical direction is changed by the same value.

Description

Railway track cleaning and maintaining device

Technical Field

The invention belongs to the technical field of railway maintenance equipment, and particularly relates to a railway track cleaning and maintenance device.

Background

Railway track, referred to as a rail, is used to support the movement of a train in the direction of laying the rail. Railway tracks are usually composed of two parallel rails which are fixedly placed on sleepers. The steel rail is of an I-shaped structure, the upper end surface of an upper wing plate of the steel rail is in contact with a rail wheel in a train and bears pressure, and the steel rail is in a polished state constantly under long-time extrusion friction; the side of web and the vertical side of last pterygoid lamina do not contact with the rail wheel in the rail, can't realize the extrusion polishing, in long-time use, takes place the corrosion easily, influences the structural strength and the stability of rail. Meanwhile, garbage and sundries possibly exist on two sides of the steel rail or on the steel rail and are involved in the bottom of the train, so that the normal operation of the train is influenced.

The inventor knows that in the research on the track cleaning device running along the rail, the problem of avoidance of the rail when the cleaning device runs along the rail needs to be considered, so that all-weather operation of the cleaning device on the rail is realized, and the maintenance efficiency of the rail cleaning and maintenance device is improved. In patent document CN 201711415600.4-multifunctional railway track and power supply cable cleaning robot and working method thereof and CN 201711338446.5-deformable and separable railway track cleaning robot and working method thereof, respectively, a cleaning device capable of avoiding trains through deformation or separation is provided. But its way to avoid trains has the following disadvantages:

(1) the separation and the equipment that realize cleaning device can waste a large amount of time, because track both sides ground is uneven and can't stabilize the location easily, the problem that the equipment can't be assembled again after the separation appears.

(2) The separated or deformed equipment can only be placed close to the train in a short distance, and the whole or part of components of the cleaning equipment can be pushed to the train by the air pressure difference caused by high-speed running of the train, so that potential safety hazards exist.

(3) The track cleaning equipment can only run along the rails and cannot automatically switch the running mode between the rails and the ground; if the rail wheel runs along the ground, the wheel rim bulges of the rail wheel are easily damaged.

(4) Can not polish to the corrosion on rail surface and handle, when installing current rust cleaning device at this track cleaning equipment, the rust cleaning device causes the hindrance when the track cleaning equipment dodges the train easily.

Disclosure of Invention

The invention aims to provide a railway track cleaning and maintaining device which can solve the problems that the operation is complicated and a large amount of time is wasted when the conventional track cleaning equipment avoids a train; the distance between the train and the train running at high speed is too small after the avoidance, so that potential safety hazards are easily generated; and the inability to switch between modes of travel along the railroad track and the ground.

In order to achieve the purpose, the invention adopts the following technical scheme: a railway track cleaning and maintaining device comprises a frame, wherein the frame comprises a first frame and a second frame which are connected with each other, the first frame is arranged under the second frame, the lower part of the first frame is provided with a track wheel, the lower part of the second frame is provided with a travelling wheel, the track wheel can drive the frame to run along a railway track, and the travelling wheel can drive the frame to run along the ground; the frame is provided with a rail cleaning mechanism which can clean attachments and corrosion on the surface of the steel rail.

The distance value between the first frame and the second frame in the vertical direction can be adjusted, so that the distance between the lowest point of the track wheel and the lowest point of the walking wheel in the vertical direction is changed by the same value.

When the distance value is minimum, the walking wheels can be in contact with the ground on two sides of the steel rail, and the height of the lowest point of the track wheel is larger than that of the upper end face of the steel rail, so that the track wheel is suspended.

When the distance value is the largest, the track wheel can be in contact with the upper end face of the steel rail, and the height of the lowest point of the walking wheel is larger than the height of the ground on two sides of the steel rail, so that the walking wheel is suspended.

Further, the first frame and the second frame are connected through a linear telescopic unit, and the linear telescopic unit is vertically arranged.

Further, the quantity of rail wheel and walking wheel is a plurality ofly, the walking direction of walking wheel can be adjusted in order to realize turning to when the frame is walked along ground, rail wheel passes through power unit drive with the walking wheel in order to realize rotating.

Further, the rail cleaning mechanism comprises a grinding wheel cleaning mechanism, the grinding wheel cleaning mechanisms are used in pairs, and the two grinding wheel cleaning mechanisms used in pairs can clean the two steel rails when the frame runs along the railway track; the grinding wheel cleaning mechanism can synchronously realize contact and separation with the steel rail with the rail wheel.

Furthermore, every emery wheel clearance mechanism includes two first emery wheels, two second emery wheels and two mutual articulated bull sticks in middle part, and one end of every bull stick is rotated and is installed a first emery wheel, and the other end is rotated and is installed a second emery wheel, forms rail web polishing space between two first emery wheels, forms rail upper limb board polishing space between two second emery wheels.

The diameters of the first grinding wheel and the second grinding wheel are set as follows: when the distance between the two first grinding wheels is equal to the thickness of the web plate, the distance between the two second grinding wheels is equal to the width of the wing plate on the steel rail; two bull sticks can be followed the pin joint rotation in self middle part and fixed to change the interval of two first emery wheels, the interval of two second emery wheels simultaneously.

Furthermore, each end of the rotating rod is fixedly provided with a connecting rod, the central axis of the connecting rod is parallel to the rotating axis of the rotating rod, one end of the connecting rod is fixedly connected with the rotating rod, and the other end of the connecting rod is rotatably connected with the first grinding wheel or the second grinding wheel; the two first grinding wheels are located at the same horizontal height, the two second grinding wheels are located at the same horizontal height, and the first grinding wheels and the second grinding wheels have a set distance in the vertical direction.

Furthermore, the middle part of the rotating rod is hinged through a connecting shaft, and the connecting shaft is fixedly connected with the first frame; a connecting rod is installed on each rotating rod respectively, the connecting rods are parallel to the connecting shafts, the lower ends of the connecting rods are fixedly connected with the rotating rods, the upper ends of the connecting rods penetrate out of the arc-shaped grooves of the first frame, and the central axes of the two connecting rods are the same as the central axis of the connecting shafts.

The arcuate slot is sized to: in the process that the connecting rod rotates along with the rotating rod, the arc-shaped groove provides guide for the connecting rod; an angle adjusting device is arranged between the two connecting rods and adjusts the included angle between the two rotating rods by adjusting the distance between the two connecting rods.

Furthermore, the angle adjusting device comprises a spring arranged between the two connecting rods, wherein one connecting rod is provided with an electromagnet, the other connecting rod is provided with a ferromagnet, and the ferromagnet is matched with the electromagnet for use. The spring is configured to: when the two connecting rods approach each other along the arc-shaped slot, the spring is compressed to accumulate elastic potential energy.

The invention has the beneficial effects that:

(1) the first frame is provided with a rail wheel, the second frame is provided with a travelling wheel, and the distance between the first frame and the second frame can be adjusted, so that the frame can freely convert between travelling with the travelling wheel contacting the ground and travelling with the rail wheel matched with a steel rail; the travelling wheels can be used for driving away from the railway track when a train is avoided, and then the travelling wheels are far away from the current railway track until a safe distance is kept, so that safety accidents caused by the fact that the travelling wheels are close to the train are avoided; the railway carriage can be directly driven away from the railway when the condition such as insufficient power in the cleaning and maintenance device is cleared.

(2) The track wheel and the walking wheel are driven by the power mechanism, so that the track cleaning and maintaining device can walk constantly through self power without being dragged by an external vehicle.

(3) By adopting the linear telescopic unit, the distance between the first frame and the second frame in the vertical direction can be adjusted by the telescopic function of the linear telescopic unit, so that the rapid switching of the track cleaning and maintaining device in different working modes is realized, and the time wasted by a complex deformation process is saved.

(4) The mode that the grinding wheel cleaning mechanism can synchronously realize contact and separation with the steel rail with the rail wheel is adopted, so that the grinding wheel cleaning mechanism cannot obstruct the lifting of the rail wheel.

(5) The connecting rod is adopted to install the first grinding wheel and the second grinding wheel, the distance between the first grinding wheel, the second grinding wheel and the rotating rod is increased in the vertical direction, and the rotating rod is prevented from moving and interfering with the steel rail.

(6) The first grinding wheel and the second grinding wheel are installed by adopting two rotating rods which are hinged with each other, and the distance between the two first grinding wheels and the distance between the two second grinding wheels can be synchronously adjusted through the mutual rotation between the two rotating rods; further synchronously finishing the operations of the attachment of the second grinding wheel to the vertical surface of the upper wing plate of the steel rail and the attachment of the first grinding wheel to the side surface of the web plate of the steel rail; rust and attachment removal by rotation of the first and second grinding wheels is facilitated.

(7) The distance between the two connecting rods is adjusted by adopting an angle adjusting device, so that the included angle between the two rotating rods can be adjusted, and the purposes of adjusting the distance between the two first grinding wheels and the distance between the two second grinding wheels are finally achieved; when the grinding wheel cleaning mechanism moves upwards along with the first vehicle frame, the distance between the two second grinding wheels is larger than the width of the upper wing plate of the steel rail, and the upper wing plate of the steel rail cannot block the separation operation of the grinding wheel cleaning mechanism and the steel rail.

(8) The combination of the spring, the electromagnet and the ferromagnet is adopted, the electromagnet is electrified to enable the two connecting rods to be close to each other to a limit distance and fixed, the extrusion force of the first grinding wheel and the second grinding wheel when in contact with the steel rail can be controlled according to the attractive force between the electromagnet and the ferromagnet, and then the grinding force and the steel rail cleaning force of the grinding wheel cleaning mechanism are changed. When the electro-magnet outage, the spring struts two connecting rods rapidly in order to increase the distance between two first emery wheels and avoid first emery wheel to hinder moving up of rail wheel and first frame.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

FIG. 1 is an isometric view of an overall structural schematic in an embodiment of the invention;

FIG. 2 is an isometric view of another aspect of the overall construction of an embodiment of the present invention;

FIG. 3 is a schematic diagram of the structure of the first frame and the hydraulic cylinder in the embodiment of the invention;

FIG. 4 is an enlarged view of the structure of portion A of FIG. 1;

FIG. 5 is an isometric view of the wheel cleaning mechanism coupled to a first frame in an embodiment of the invention;

FIG. 6 is a top view of the wheel cleaning mechanism coupled to the first frame in an embodiment of the present invention;

FIG. 7 is a schematic view of the first frame moving down to an extreme position in accordance with an embodiment of the present invention;

fig. 8 is a schematic view of the first frame moving up to the limit position in the embodiment of the present invention.

In the figure: 1. a first frame; 2. a second frame; 3. a reinforcing rod; 4. a hydraulic cylinder; 5. a steel rail; 6. a sleeper; 7. a fixed table; 8. a traveling wheel; 9. a turntable; 10. a rail wheel; 11. a guide bar; 12. a grinding wheel cleaning mechanism;

101. an arc-shaped slot; 1201. a first grinding wheel; 1202. a rotating rod; 1203. a connecting shaft; 1204. a second grinding wheel; 1205. a ferromagnetic body; 1206. a spring; 1207. an electromagnet; 1208. a connecting rod.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

As shown in the attached fig. 1 and 2 of the specification, the railway track comprises two steel rails 5 and a sleeper 6 at the lower part of the steel rails, railway ballast is laid below the sleeper 6, and the railway track further comprises railway accessories such as a rail brace, a fastener, a rail pressing device, a rail clamping plate, an elastic strip and a railway spike.

It should be noted that the traveling wheels described in the following embodiments travel along the ground, and the structure referred to by the ground includes a normal road surface, a ballast, and a sleeper upper surface protruding from the ballast.

In a typical embodiment of the present invention, as shown in fig. 1 to 8, a railway track cleaning and maintaining device includes a vehicle frame, where the vehicle frame includes a first vehicle frame 1 and a second vehicle frame 2 connected to each other, the first vehicle frame 1 is disposed right below the second vehicle frame 2, a track wheel 10 is installed at a lower portion of the first vehicle frame 1, a road wheel 8 is installed at a lower portion of the second vehicle frame 2, the track wheel 10 can drive the vehicle frame to run along a railway track, and the road wheel 8 can drive the vehicle frame to run along the ground. The frame is provided with a rail cleaning mechanism 12, and the rail cleaning mechanism 12 can clean attachments and corrosion on the surface of the steel rail.

The distance value of the first frame 1 and the second frame 2 in the vertical direction can be adjusted, so that the distance value of the lowest point of the track wheel 10 and the lowest point of the walking wheel 8 in the vertical direction changes by the same value.

When the distance value is minimum, the walking wheels 8 can be in contact with the ground on two sides of the steel rail, and the height of the lowest point of the track wheel 10 is greater than that of the upper end face of the steel rail, so that the track wheel 10 is suspended.

When the distance value is the largest, the track wheels 10 can be in contact with the upper end face of the steel rail, and the height of the lowest point of the walking wheels 8 is larger than the height of the ground on two sides of the steel rail, so that the walking wheels 8 are suspended.

It should be noted that in this embodiment, the track wheels need to be matched with the steel rails to realize the function of traveling along the railway track. In the prior art, the train has heavy self-weight due to the requirements of carrying people and transporting goods, and has higher requirement on the dimensional precision of the track wheels; the train after being manufactured needs to be hoisted to the position right above the steel rail by using a crane during initial operation, and the position and the posture of the train ensure that the train can be placed down to just contact and be matched with the steel rail.

The self weight of the railway track cleaning and maintaining device provided by the embodiment is far lower than that of a train, and the requirements on the size, the material and the like of a track wheel are also lower; the thickness of the rail wheel can be properly increased to reduce the difficulty of matching the rail wheel with the steel rail. When a driver operates the device to clean and maintain the rails, the positions of the track wheels and the positions of the rails can be adjusted by repeatedly debugging the positions of the travelling wheels on the ground on two sides of the rails. In some embodiments, some cameras may be further disposed at the bottom of the first frame, so as to display the position relationship between the track wheels and the steel rails in real time, and facilitate an operator to operate the road wheels for adjustment.

In order to adjust the distance between the first frame 1 and the second frame 2 in the vertical direction, in the connection manner provided by this embodiment, the first frame 1 and the second frame 2 are connected by a linear telescopic unit, and the linear telescopic unit is vertically disposed.

In this embodiment, the linear expansion unit may be a hydraulic cylinder 4, a cylinder body of the hydraulic cylinder 4 is fixedly connected to the lower end of the second frame 2, a tail end of the piston rod is fixedly connected to the upper end of the first frame 1, and the distance between the first frame 1 and the second frame 2 can be adjusted by expansion and contraction of the hydraulic cylinder 4. The quantity of hydraulic cylinder 4 is a plurality of, and through anchor strut 3 interconnect and fixed between a plurality of hydraulic cylinder 4's the cylinder body, the upper end of first frame 1 is equipped with guide arm 11, and guide arm 11 is vertical sets up upwards and passes the guiding hole on anchor strut 3 to this motion direction when realizing hydraulic cylinder 4 flexible. It should be noted that the use of the hydraulic cylinder 4 necessarily requires a hydraulic station and other equipment, which belong to the prior art in the field and are not described herein again.

In other embodiments, the linear expansion unit may also adopt structures such as an electric push rod and an air cylinder under the condition of meeting the use requirement, and the structures can be selected by the person skilled in the art.

Of course, those skilled in the art may also use other technical means besides the linear telescopic unit to adjust the vertical distance between the first frame 1 and the second frame 2 and fix the same, which will not be described herein.

In order to realize the frame at railway track and subaerial walking function, this embodiment sets up rail wheel 10 and walking wheel 8, rail wheel 10 is a plurality ofly with the quantity of walking wheel 8, walking 8's walking direction can be adjusted in order to realize the frame along the turning to when ground walking, rail wheel 10 passes through power unit drive with walking wheel 8 and rotates in order to realize.

Specifically, the structural shape of the rail wheel 10 can be similar to that of a rail wheel on the bottom of an existing train, and the specific structural size and material of the rail wheel 10 in this embodiment can be set by those skilled in the art due to the differences in load-bearing requirements, strength design requirements, and the like. The arrangement and the distance between each pair of track wheels 10 can be designed according to the design process of the track wheels at the bottom of the train and can be set by a person skilled in the art.

The structural shape of the road wheel 8 can adopt a common tire type structure, just like a tire at the bottom of a common vehicle, and the road wheel can complete the functions of walking and steering along a set straight line. In the embodiment, the lower part of the second frame 2 is connected with a fixed platform 7, the lower part of the fixed platform 7 is connected with a rotary table 9, a travelling wheel 8 is arranged on the side surface of the rotary table 9, and the rotary table 9 can rotate and be fixed along the direction of the vertical axis of the rotary table 9 so as to change the travelling direction of the travelling wheel 8 along the ground. In the form of construction shown in the drawings, each road wheel 8 is provided with a fixed table 7 and a turntable 9. A rotation driving unit such as a motor may be provided at a connection portion of the traveling wheel 8 and the turn table 9. The rotating shaft of the traveling wheels 8 is driven to rotate by the rotary driving unit.

In order to realize the cleaning and maintenance of the railway track, the rail cleaning mechanism in the present embodiment comprises the grinding wheel cleaning mechanism 12, and it should be noted that in this embodiment, the first carriage 1 or the second carriage 2 may also carry a garbage collecting device such as that mentioned in the related document in the background art, and during the carriage driving, the cleaning and collecting operation of the garbage distributed around the railway track is completed. The laser rust remover can also be used in cooperation with the grinding wheel cleaning mechanism 12 in the embodiment, and after the grinding wheel cleaning mechanism 12 finishes the polishing treatment of the attachments and the rust on the surface of the steel rail, the laser is used for further realizing the rust removal operation.

This embodiment is to a plurality of sides that emery wheel clearance mechanism 12 can not clear up the rail of polishing simultaneously among some current setting modes, or corresponding emery wheel clearance mechanism 12 can not be supporting be applicable to the condition that the track clearance maintains the device and need break away from in the short time from the rail in order to dodge the train, provides corresponding emery wheel clearance mechanism 12's concrete structural style.

In order to realize that emery wheel clearance mechanism 12 can in time break away from with the rail to realize the synchronous polishing of a plurality of sides of rail, clearance: the grinding wheel cleaning mechanisms 12 are used in pairs, and the two grinding wheel cleaning mechanisms 12 used in pairs can clean two steel rails when the frame runs along a railway track; the grinding wheel cleaning mechanism 12 can synchronously realize contact and separation with the rail wheel 10. In the wheel cleaning mechanism 12 used in pairs, the distance between the axes of rotation of the rotary rods 1202 is equal to the distance between the center planes of the two rails.

Each grinding wheel cleaning mechanism 12 comprises two first grinding wheels 1201, two second grinding wheels 1204 and two rotating rods 1202, the middle parts of the rotating rods 1202 are hinged to each other, one end of each rotating rod 1202 is rotatably provided with one first grinding wheel 1201, the other end of each rotating rod 1202 is rotatably provided with one second grinding wheel 1204, a steel rail web polishing space is formed between the two first grinding wheels 1201, and a steel rail upper wing plate polishing space is formed between the two second grinding wheels 1204.

The steel rail web plate polishing space is used for placing a web plate of a steel rail, and the steel rail upper wing plate polishing space is used for placing an upper wing plate of the steel rail; of course, the change in the positional relationship between the wheel cleaning mechanism 12 and the rail is achieved by the displacement and deformation of the wheel cleaning mechanism 12.

The diameters of the first 1201 and second 1204 wheels are sized to: when the distance between the two first grinding wheels 1201 is equal to the thickness of the web, the distance between the two second grinding wheels 1204 is equal to the width of the wing on the rail. The two rotating rods 1202 can rotate and be fixed along the hinge point in the middle of the rotating rods 1202 so as to change the spacing between the two first grinding wheels 1201 and the spacing between the two second grinding wheels 1204 at the same time.

Specifically, the connection form of the first grinding wheel 1201, the second grinding wheel 1204 and the rotating rod 1202 is as follows: each end of the rotating rod 1202 is fixedly provided with a connecting rod 1208, the central axis of the connecting rod 1208 is parallel to the rotating axis of the rotating rod 1202, one end of the connecting rod 1208 is fixedly connected with the rotating rod 1202, and the other end of the connecting rod 1208 is rotatably connected with the first grinding wheel 1201 or the second grinding wheel 1204.

The two first grinding wheels 1201 are at the same level, the two second grinding wheels 1204 are at the same level, and the first grinding wheels 1201 and the second grinding wheels 1204 have a set distance in the vertical direction.

It should be noted that the thickness of the first grinding wheel 1201 is the same as the height of the rail web, and the thickness of the second grinding wheel 1204 is the same as the thickness of the wing plate on the rail. The setting mode can avoid the phenomenon of blocking caused by over-thick grinding wheels under the condition of meeting the requirements of grinding and cleaning of corresponding side surfaces in the steel rail, and the problem that the grinding requirements cannot be finished on the corresponding side surfaces of the steel rail caused by over-thin grinding wheels.

In order to synchronously adjust the distance between the first grinding wheels 1201 and the distance between the second grinding wheels 1204 in the wheel cleaning mechanism 12: the middle part of the rotating rod 1202 is hinged through a connecting shaft 1203, and the connecting shaft 1203 is fixedly connected with the first frame 1; each rotating rod 1202 is provided with a connecting rod 1208, the connecting rods 1208 are parallel to the connecting shaft 1203, the lower ends of the connecting rods 1208 are fixedly connected with the rotating rods 1202, the upper ends of the connecting rods 1208 penetrate out of the arc-shaped groove 102 of the first frame 1, and the distance between the central axis of each connecting rod 1208 and the central axis of the connecting shaft 1203 is the same.

The arcuate slot 102 is sized to: in the process that the connecting rods 1208 rotate along with the rotating rods 1202, the arc-shaped grooves 102 provide guidance for the connecting rods 1208, and an angle adjusting device is arranged between the two connecting rods 1208 and adjusts the included angle between the two rotating rods 1202 by adjusting the distance between the two connecting rods 1208.

The angle adjusting device comprises a spring 1206 arranged between two connecting rods 1208, wherein one connecting rod 1208 is provided with an electromagnet 1207, the other connecting rod 1208 is provided with a ferromagnet 1205, and the ferromagnet 1205 is matched with the electromagnet 1207 for use; the spring 1206 is arranged to: as the two connecting rods 1208 approach each other along the arcuate slot 102, the spring 1206 is compressed to accumulate elastic potential energy.

In other embodiments, the angle adjusting device may take other forms, and may be set by one skilled in the art.

The working principle is as follows: when the device is required to be used for cleaning the track, firstly, the hydraulic oil cylinder 4 retracts to enable the track wheels 10 to ascend to the upper limit position, and the travelling wheels 8 drive the vehicle frame to travel to the railway track.

The position gesture of maintaining the device is maintained in the clearance through the motion change of walking wheel 8, when rail wheel 10 was in 5 top relevant positions of rail in the railway track in this device, hydraulic cylinder 4's piston rod stretches out, rail wheel 10 descends gradually to 5 up end contact with the rail, rail wheel 10 accomplishes the cooperation with

rail

5, 8 of walking wheel this moment still contact with ground, the piston rod continues to stretch out, 8 of walking wheel receive the jacking of first frame 1 and hydraulic cylinder 4, make 8 relative ground of walking wheel promoted until unsettled.

When the rail wheel 10 is contacted with the steel rail 5 and is matched, the grinding wheel cleaning mechanism 12 synchronously moves downwards to enable the web plate of the steel rail 5 to be placed in the steel rail web plate polishing space, the wing plate of the steel rail 5 is placed in the steel rail upper wing plate polishing space, and at the moment, the first grinding wheel 1201 clamps the web plate and the second grinding wheel 1204 clamps the upper wing plate by changing the included angle between the rotating rods 1202; specifically, the electromagnet 1207 is energized to make the electromagnet 1207 and the ferromagnetic body 1205 attract each other, so as to drive the two connecting rods 1208 to approach each other, and the rotating rod 1202 rotates, and finally clamping and fixing of the first grinding wheel 1201 and the second grinding wheel 1204 to the steel rail 5 is completed. The clamping force can be adjusted by changing the magnitude of the current in the electromagnet 1207.

When the rail wheel 10 moves under the driving of the driving device, the whole vehicle frame runs along the railway track, rolling friction occurs between the first grinding wheel 1201 and the second grinding wheel 1204 and the steel rail, and then the functions of grinding and cleaning the corresponding side surface of the steel rail 5 are completed. If other cleaning and maintaining structures are also installed, the cleaning and maintaining structures can synchronously move along with the frame.

When needing to avoid the train, or drive off from the track:

firstly, the electromagnet 1207 is powered off, and the compressed spring 1206 is reset, so that the distance between the two first grinding wheels 1201 is larger than the width of an upper wing plate of the steel rail 5, and the obstruction of the grinding wheel cleaning mechanism 12 on the lifting of the rail wheel 10 is avoided.

And a piston rod of the hydraulic oil cylinder 4 retracts, the walking wheel 8 gradually descends to be in contact with the ground, at the moment, the track wheel 10 is still in contact with the upper end face of the steel rail 5, the piston rod continues to retract, and the track wheel 10 is separated from the upper end face of the steel rail 5 and is in contact with the upper end face of the steel rail until the piston rod is suspended.

In the suspension process of the rail wheel 10, the grinding wheel cleaning mechanism 12 moves synchronously to enable the web of the steel rail 5 to be separated from the steel rail web polishing space, and the wing plate of the steel rail 5 is separated from the steel rail upper wing plate polishing space.

The device is far away from the current railway track to reach a safe position through the walking of the walking wheels 8.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.

Claims

1. A railway track cleaning and maintaining device is characterized by comprising a frame, wherein the frame comprises a first frame and a second frame which are connected with each other, the first frame is arranged under the second frame, a track wheel is arranged at the lower part of the first frame, a travelling wheel is arranged at the lower part of the second frame, the track wheel can drive the frame to run along a railway track, and the travelling wheel can drive the frame to run along the ground;

the distance between the first frame and the second frame in the vertical direction can be adjusted, so that the distance between the lowest point of the track wheel and the lowest point of the walking wheel in the vertical direction is changed by the same value;

when the distance value is minimum, the travelling wheels can be in contact with the ground on two sides of the steel rail, and the height of the lowest point of the track wheel is greater than that of the upper end surface of the steel rail, so that the track wheel is suspended in the air;

when the distance value is the largest, the track wheel can be contacted with the upper end surface of the steel rail, and the height of the lowest point of the walking wheel is greater than the height of the ground on two sides of the steel rail, so that the walking wheel is suspended in the air;

the frame is provided with a rail cleaning mechanism which can clean attachments and corrosion on the surface of the steel rail;

the rail cleaning mechanism comprises grinding wheel cleaning mechanisms, each grinding wheel cleaning mechanism comprises two first grinding wheels, two second grinding wheels and two rotating rods, the middle parts of the rotating rods are hinged with each other, one end of each rotating rod is rotatably provided with one first grinding wheel, the other end of each rotating rod is rotatably provided with one second grinding wheel, a rail web plate polishing space is formed between the two first grinding wheels, and a rail upper wing plate polishing space is formed between the two second grinding wheels;

the diameters of the first grinding wheel and the second grinding wheel are set as follows: when the distance between the two first grinding wheels is equal to the thickness of the web, the distance between the two second grinding wheels is equal to the width of the wing plate on the rail.

2. A railway track cleaning and maintenance device according to claim 1, wherein the first carriage is connected with the second carriage by a linear telescopic unit, and the linear telescopic unit is vertically arranged.

3. The railway track cleaning and maintaining device as claimed in claim 1, wherein the number of the track wheels and the number of the walking wheels are multiple, the walking direction of the walking wheels can be adjusted to realize steering of the frame when walking along the ground, and the track wheels and the walking wheels are driven by a power mechanism to realize rotation.

4. The railway track cleaning and maintenance device of claim 1, wherein the wheel cleaning mechanisms are used in pairs, and the two wheel cleaning mechanisms used in pairs can clean the two rails when the carriage travels along the railway track; the grinding wheel cleaning mechanism can synchronously realize contact and separation with the steel rail with the rail wheel.

5. Railway track cleaning and maintenance device according to claim 4,

two bull sticks can be followed the pin joint rotation in self middle part and fixed to change the interval of two first emery wheels, the interval of two second emery wheels simultaneously.

6. A railway track cleaning and maintenance device according to claim 5, wherein the grinding wheel cleaning mechanism used in pairs is such that the distance between the axes of rotation of the rotary rods is equal to the distance between the centre planes of the two rails.

7. The railway track cleaning and maintaining device as claimed in claim 6, wherein each end of the rotating rod is fixedly provided with a connecting rod, the central axis of the connecting rod is parallel to the rotating axis of the rotating rod, one end of the connecting rod is fixedly connected with the rotating rod, and the other end of the connecting rod is rotatably connected with the first grinding wheel or the second grinding wheel;

the two first grinding wheels are located at the same horizontal height, the two second grinding wheels are located at the same horizontal height, and the first grinding wheels and the second grinding wheels have a set distance in the vertical direction.

8. A railway track cleaning and maintenance device according to claim 6, wherein the thickness of the first grinding wheel is the same as the height of the web of the rail and the thickness of the second grinding wheel is the same as the thickness of the wing plate on the rail.

9. The railway track cleaning and maintenance device of claim 6, wherein the middle part of the rotating rod is hinged through a connecting shaft, and the connecting shaft is fixedly connected with the first vehicle frame;

each rotating rod is provided with a connecting rod, the connecting rods are parallel to the connecting shaft, the lower ends of the connecting rods are fixedly connected with the rotating rods, the upper ends of the connecting rods penetrate out of the arc-shaped groove of the first frame, and the distances between the central axes of the two connecting rods and the central axis of the connecting shaft are the same;

the arcuate slot is sized to: the connecting rod is along with the bull stick pivoted in-process, and the arc wall provides the direction for the connecting rod, is equipped with angle adjusting device between two connecting rods, angle adjusting device adjusts the contained angle between two bull sticks through adjusting the distance between two connecting rods.

10. A railway track cleaning and maintenance device according to claim 9, wherein the angle adjustment device comprises a spring arranged between two connecting rods, one of which is provided with an electromagnet and the other of which is provided with a ferromagnetic body, the ferromagnetic body cooperating with the electromagnet;

the spring is configured to: when the two connecting rods approach each other along the arc-shaped slot, the spring is compressed to accumulate elastic potential energy.