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CN113089563A - Railway turnout cleaning and maintaining device and method - Google Patents

Railway turnout cleaning and maintaining device and method Download PDF

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Publication number
CN113089563A
CN113089563A CN202110380203.8A CN202110380203A CN113089563A CN 113089563 A CN113089563 A CN 113089563A CN 202110380203 A CN202110380203 A CN 202110380203A CN 113089563 A CN113089563 A CN 113089563A
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CN
China
Prior art keywords
rotating
cleaning
switch
rotating member
turnout
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110380203.8A
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Chinese (zh)
Inventor
张斌
赵瑞
黄贤欢
万文超
马晓川
孙奇
费蒙恩
卞超骐
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East China Jiaotong University
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East China Jiaotong University
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Application filed by East China Jiaotong University filed Critical East China Jiaotong University
Priority to CN202110380203.8A priority Critical patent/CN113089563A/en
Publication of CN113089563A publication Critical patent/CN113089563A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01HSTREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H8/00Removing undesirable matter from the permanent way of railways; Removing undesirable matter from tramway rails
    • E01H8/10Removing undesirable matter from rails, flange grooves, or the like railway parts, e.g. removing ice from contact rails, removing mud from flange grooves
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B31/00Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
    • E01B31/02Working rail or other metal track components on the spot
    • E01B31/12Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails
    • E01B31/17Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails by grinding

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Railway Tracks (AREA)

Abstract

本发明提供一种铁路道岔清洁养护装置及方法,所述装置包括依次连接的驱动装置、传动系统和养护端口系统;其中,转动系统可在驱动装置作用下,带动养护端口系统工作;其中,传动系统包括第一转动件和第二转动件,其中第一转动件和第二转动件的轴线夹角可调;所述养护端口系统包括可被第二转动件驱动的第三转动件和与第三转动件连接的磨头。本发明的方案具有结构轻便、操作简易、功能多样化的特点,对于道岔锈迹和污垢,无需拆卸道岔结构即可清洁,节省了人力物力,模块化的零件替换则减轻了现场工具携带数量,提高道岔养护作业效率,有效弥补了铁路现场技术作业过程中存在的问题和不足,对铁路行车安全提供了有效保障。

Figure 202110380203

The invention provides a device and method for cleaning and maintaining a railway turnout. The device includes a drive device, a transmission system and a maintenance port system connected in sequence; wherein, the rotating system can drive the maintenance port system to work under the action of the drive device; The system includes a first rotating member and a second rotating member, wherein the included angle between the axes of the first rotating member and the second rotating member is adjustable; the maintenance port system includes a third rotating member that can be driven by the second rotating member and is connected with the first rotating member. Grinding head connected by three rotating parts. The solution of the invention has the characteristics of light structure, simple operation and diversified functions. For the rust and dirt of the turnout, it can be cleaned without disassembling the turnout structure, which saves manpower and material resources. Improve the efficiency of turnout maintenance, effectively make up for the problems and deficiencies existing in the technical operation process of the railway site, and provide an effective guarantee for the safety of railway traffic.

Figure 202110380203

Description

Railway turnout cleaning and maintaining device and method
Technical Field
The invention belongs to the technical field of traffic, particularly relates to the field of maintenance and maintenance of railway turnouts, and more particularly relates to a device and a method for cleaning and maintaining the railway turnouts.
Background
The turnout is an important component of a railway line and plays an important role in line transportation such as train intersection, line switching and the like. In the process of the train running through the turnout, because the turnout structure is complicated, the track discontinuous positions are many, therefore the vibration of the train when running on the turnout is compared with the large vibration on the line, foreign matters in the vehicle member, impurities such as rust can drop in the turnout structure due to the vibration, in addition, the turnout is complex in structure, the narrow and small positions in some spaces such as the joint positions of turnout parts such as the gap between a switch rail and a stock rail, the gap between a guard rail and the stock rail are not easy to discover and clear after the occurrence of the corrosion and the adhesion of dust, a condensate is easy to form, and adverse effects are generated on the normal running of the turnout structure. For example, the switch point rail part is used as a train running guide part and is always switched between two states of being tightly attached to or separated from a stock rail, the movable point rail of part of the switch also needs to change positions at any time, and the solidified substances formed by dust, foreign matters and corrosion at the positions due to environmental factors can block the action of the switch, so that switch diseases such as non-tight attachment of the switch rail and the stock rail, switch rail jumping, inflexible switch rail movement and the like are caused, and the normal passing of trains through the switch is influenced, even the derailment and overturn are even avoided. Therefore, in order to ensure the safety of railway transportation and keep the turnout state normal, the railway department needs to regularly check the geometric dimension of the turnout, check whether movable mechanisms of the turnout, such as a point rail, a movable point rail, a point switch and the like, can flexibly operate or not, check whether clamping stagnation occurs or not, and check whether each mechanism and a connecting part are fixed firmly or not. In the past, the cleaning and maintenance operation of turnouts mainly depends on traditional manual operation, and the operation efficiency and the operation quality are insufficient. Although some tools are equipped on the spot at present, the main structures of the turnout, such as a switch rail, a stock rail, a point switch, a guard rail, a frog center and a large difference of geometric dimensions, the sizes and standards of parts are different, and a plurality of machines are needed for spot maintenance; and the connection space of each part, such as the installation positions of switch rails and stock rails, guard rails and stock rails, frog and stock rails, connecting parts, rail reinforcing equipment and the like, has different connection operation modes and greatly different connection gap spaces, so that the common cleaning machines are difficult to cover the working links and have limited functions in daily operation. Under the condition that the field operation time is limited, the cleaning and maintenance operation is difficult to complete completely, and potential safety hazards are brought to the service life of the turnout and the running safety of the train in the past.
Disclosure of Invention
The invention aims to solve any one of the problems, and particularly provides a railway turnout cleaning and maintenance device which comprises a driving device, a transmission system and a maintenance port system which are sequentially connected; the rotating system can drive the maintenance port system to work under the action of the driving device; the transmission system comprises a first rotating piece and a second rotating piece, wherein the included angle between the axes of the first rotating piece and the second rotating piece is adjustable; the maintenance port system includes a third rotating member drivable by the second rotating member and a grinding head coupled to the third rotating member.
In one scheme, the first rotating member and the second rotating member are connected through a flexible shaft which can be flexibly bent.
In one aspect, the first rotating member and the second rotating member are connected by a rigid connection structure.
In one aspect, the rigid connection structure includes a first gear disposed on the first rotating member, a second gear disposed on the second rotating member, and an intermediate gear shaft, wherein the intermediate gear shaft is disposed on the intermediate gear shaft, the intermediate gear is engaged with the first gear and the second gear, respectively, and an axis of the intermediate gear shaft is perpendicular to rotational axes of the first rotating member and the second rotating member.
In one aspect, the rigid connection structure further includes a bracket on which the intermediate gear shaft is rotatably supported.
In one aspect, the first rotating member is a shaft structure or a sleeve and the second rotating member is a shaft structure or a sleeve.
In one aspect, the driving device includes a motor and a driving shaft driven by the motor, and the driving shaft is connected to the first rotating member.
In one scheme, the driving device further comprises a switch heat dissipation opening, the switch is arranged at the front end of the motor holding part and is convenient to switch by a single hand, and the heat dissipation opening is located at the tail part of the motor.
In one aspect, the maintenance port system further includes a sleeve removably coupled to the third rotating member, the grater being removably mountable to the sleeve.
The invention also provides a railway turnout cleaning and maintenance method which is implemented by adopting the railway turnout cleaning and maintenance device of any scheme, and is characterized in that: the method comprises the following steps:
1) starting the driving device to drive the grinding head to start rotating;
2) aligning the grinding head to the point of the turnout to be cleaned, and starting cleaning;
3) the angle between the first rotating part and the second rotating part of the transmission system is adjusted as required to control the angle of the cylindrical grinding head so as to adapt to different cleaning positions;
4) when the bottom of the switch rail is rusted or fouled seriously or the turnout switch mechanism is rusted seriously, the cylindrical grinding head can be replaced by a tapered grinding head to clean the gap at the bottom of the switch rail and the connecting gap of the switch mechanism;
5) when the bolt that discovery switch exists needs to be dismantled or screw up, the sleeve of different specifications is changed into in the bistrique dismantlement of third rotation piece bottom, corresponds not unidimensional construction bolt, dismantles, fastening operation.
Compared with the prior art, the turnout maintenance equipment has the characteristics of light structure, simplicity and easiness in operation and diversified functions, can clean turnout rust and dirt without disassembling a turnout structure, saves manpower and material resources, reduces the carrying quantity of field tools by modularized part replacement, improves turnout maintenance operation efficiency, effectively overcomes the problems and the defects existing in the railway field technical operation process, and provides effective guarantee for railway driving safety.
Drawings
Fig. 1 is a schematic view of the working state of the novel railway turnout cleaning and maintaining device.
Fig. 2 is an overall schematic diagram of the novel railway turnout cleaning and maintaining device.
Fig. 3 is a component diagram of a driving device in the novel railway turnout cleaning and maintaining device.
Fig. 4 is a component diagram of a transmission system in the novel railway turnout cleaning and maintaining device.
Fig. 5 is a connection diagram of a square tenon, a sleeve and a conical grinding head in the novel railway turnout cleaning and maintaining device.
Detailed Description
In order to make the technical solution and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, the railway turnout cleaning and maintenance device of the invention comprises a driving device 1, a transmission system 2 and a maintenance port system 3 which are connected in sequence; wherein, the rotating system 2 can drive the maintenance port system 3 to work under the action of the driving device 1.
The transmission system 2 includes a first rotating member 10 and a second rotating member 14, wherein an included angle between axes of the first rotating member 10 and the second rotating member 14 is adjustable.
Wherein the maintenance port system 3 includes a third rotating member 20 which can be driven by the second rotating member 14 and grinding stones connected to the third rotating member 20.
During operation, the driving device 1 drives the first rotating part 10 to rotate, and then drives the second rotating part 14 and the third rotating part 20 to rotate in sequence, and finally drives the grinding head to rotate, so that the cleaning of the turnout such as rust removal is realized. Wherein, the included angle between the axis of the first rotating member 10 and the axis of the second rotating member 14 can be adjusted according to actual needs, so that the angle of the grinding head can be conveniently adjusted, and more convenient cleaning work is realized.
In one embodiment, the first rotating member 10 and the second rotating member 14 are connected by a flexible shaft. The flexible shaft can enable the first rotating member 10 and the second rotating member 14 to present any angle, and the adjustment of the grinding head angle is facilitated.
In one embodiment, the first rotating member 10 and the second rotating member 14 are connected by a rigid connection structure. The rigid connection structure comprises a first gear 11 rotatably arranged on the first rotating member 10, a second gear 15 rotatably arranged on the second rotating member 14, and an intermediate gear shaft 12, wherein the intermediate gear shaft 12 is provided with an intermediate gear 13, the intermediate gear 13 is respectively meshed with the first gear 11 and the second gear 15, and the axis of the intermediate gear shaft 12 is perpendicular to the rotating axes of the first rotating member 10 and the second rotating member 14 (namely, the axis around when the angles of the first rotating member 10 and the second rotating member 14 are adjusted is coincident with the axis of the intermediate gear shaft 12). In one aspect, the first rotating member 10 includes a tubular main body, and the gear shaft of the first gear 11 is rotatably disposed in the tubular main body of the first rotating member 10 (for example, connected by a bearing or sliding friction). The second gear 15 is connected to the second rotating member 14 in the same manner as the first gear 11 is connected to the first rotating member 10.
In one aspect, the rigid connection structure further includes a bracket on which the intermediate gear shaft 12 is rotatably supported. Preferably, the first rotating member 10 and the second rotating member 14 are both rotatably connected to the bracket.
In one aspect, the first rotating member 10 is a shaft structure or sleeve and the second rotating member 14 is a shaft structure or sleeve.
In one aspect, a locking member (not shown) is provided on the bracket, and can fix the intermediate gear shaft 12 to the bracket to limit the rotation of the intermediate gear shaft 12.
By adopting the scheme, compared with flexible connection, the integral structure and the working process of the rigid connection structure are more stable, and the included angle between the first rotating part 10 and the second rotating part 14 is easier to fix, so that the instability of the grinding head is avoided.
In one embodiment, the driving device 1 includes a motor 5 and a driving shaft 9 driven by the motor 5, and the driving shaft 9 is connected to the first rotating member 10. In a preferred scheme, the driving device 1 comprises a power output port 8, the driving shaft 9 is detachably connected with the power output port 8, replacement of driving shafts 9 with different specifications can be conveniently achieved, and the driving shafts 9 generally have multiple length specifications and are suitable for different maintenance requirements of parts of a turnout, such as guard rails, movable point rails, wing rails, a switching mechanism and the like.
In one aspect, the power output port 8 and the driving shaft 9 are detachably connected and power transmitted by a threaded connection, a spline connection, or the like. For example, an internal thread is provided at the power output port 8, and a matching external thread is provided on the drive shaft 9.
In one scheme, drive arrangement still includes handle 4, handle 4 and 5 main parts swing joint of motor can dismantle in a flexible way, and a handheld electricity during the operation, 5 main parts, a handheld handle 4 increase device stability.
In one scheme, the driving device further comprises a switch 6 and a heat dissipation opening 7, the switch 6 is arranged at the front end of the motor holding part and is convenient to switch by a single hand, and the heat dissipation opening 7 is located at the tail part of the motor to ensure air flow circulation and prevent the motor from being overheated.
In one aspect, the first rotating member 10 and the first gear 11 are integrally formed or welded; the second rotation member 14 and the second gear 15 are integrally formed or welded.
In one aspect, the intermediate gear shaft 12 and the intermediate gear 13 are integrally formed, and a bearing is disposed at a connection portion of the intermediate gear shaft 12 and the bracket. In another aspect, the intermediate gear shaft 12 is fixedly connected to the bracket, and the intermediate gear 13 is connected to the intermediate gear shaft 12 through a bearing.
In one aspect, the support includes an upper support and a lower support, the upper and lower supports being connected by a pivot structure. The first rotating member 10 is connected to the upper bracket, the second rotating member 14 is connected to the lower bracket, and the first gear 12 and the second gear 15 are disposed in a space formed by the upper and lower brackets. The intermediate gear shaft 12 is arranged coaxially with the pivot structure, e.g. the intermediate gear shaft 12 is hollow, and the pivot structure is at least partially arranged inside the hollow intermediate gear shaft 12.
In one aspect, the locking member 1 is integrally formed with the pivot structure, and specifically includes the damping bolt 19 and the self-locking nut 18, wherein the damping bolt 19 passes through the upper bracket, the lower bracket and the intermediate gear shaft 12, and the self-locking nut 18 locks the lock. Thus, the adjustment of any angle between the upper bracket and the lower bracket can be realized and the adjustment can be maintained at any angle through damping force.
In one scheme, the corrugated dustproof pipe 16 is wrapped on the outer side of the transmission device 2, so that dust is prevented from adhering to influence normal meshing between gears, and meanwhile, the gear set is protected against rust.
In one aspect, the maintenance port system 3 further includes a sleeve 22 fixedly or removably connected to the third rotating member 20, and the grater is removably mounted to the sleeve 22, such as with threads, splines, etc. The grinding stones may be cylindrical grinding stones 23 or conical grinding stones 24. In addition, the end of the sleeve 22 is of a hexagonal groove structure, and can be used for assembling and disassembling bolts with different specifications of steel rail accessories.
In one embodiment, the sleeve 22 is connected to the third rotor 20 by a spline 21, such as the sleeve 22.
The invention also provides a railway turnout cleaning and maintenance method which is implemented by adopting the railway turnout cleaning and maintenance device of any scheme, and the method comprises the following steps:
1. starting the driving device to drive the grinding head to start rotating;
2. aligning the grinding head to the point of the turnout to be cleaned, and starting cleaning;
3. the angle between the first rotating member 10 and the second rotating member 14 of the transmission system 2 is adjusted as needed to control the angle of the cylindrical grinding heads 23 to accommodate different cleaning positions;
4. when the bottom of the switch rail is rusted or fouled seriously or the turnout switch mechanism is rusted seriously, the cylindrical grinding head 23 can be replaced by the tapered grinding head 24 to clean the gap at the bottom of the switch rail and the connecting gap of the switch mechanism;
5. when the bolts of the turnout need to be disassembled or screwed, the grinding head at the bottom end of the third rotating part 20 is disassembled and replaced by the sleeve 22 with different specifications, and the disassembly and fastening operation is carried out by rotating the motor 5 corresponding to the mounting bolts with different sizes.
Compared with the prior art, the turnout maintenance device has the advantages of being light in structure, easy to operate and diversified in function, cleaning turnout rust and dirt without disassembling a turnout structure, saving manpower and material resources, reducing carrying quantity of field tools due to modular part replacement, improving turnout maintenance operation efficiency, effectively solving the problems and defects existing in the railway field technology operation process, and effectively guaranteeing railway driving safety
Example 1:
the assembly and operation of the cleaning and maintenance device of the present invention will be described with reference to the accompanying drawings.
The first step is as follows: workers firstly assemble all the accessories of the device; firstly, a handle 4 is arranged at the front side of a motor 5, after a driving shaft 9 with a proper specification is selected, the driving shaft 9 is embedded into a clamping groove of a power output port 8 and is fully and closely connected; the opening of the first rotating piece 10 of the transmission system 2 is matched with the other end of the driving shaft 9; the opening of the second rotary member 14 (sleeve) is connected with the third rotary member 20 of the maintenance port system 3; the tenon 21 of the lower part of the third rotating member 20 is fixedly connected to the sleeve 22, and the cylindrical grinding head 23 is inserted into the sleeve.
The second step is that: the worker holds the handle 4 in one hand and the motor 5 body in the other hand, turns on the switch 6, and starts the rotation of the cylindrical grinding head 23. The worker starts cleaning and maintenance operation from the switch point rail position, and the angle between the first rotating part 10 and the second rotating part 14 of the transmission system 2 can be adjusted at any time according to the gap between the switch point rail and the stock rail so as to control the angle of the cylindrical grinding head 23, and the cleaning and maintenance operation is completed. When the bottom of the switch rail is rusted or fouled seriously or the turnout switch mechanism is rusted seriously, the cylindrical grinding head 23 can be replaced by the tapered grinding head 24 to clean the gap at the bottom of the switch rail and the connecting gap of the switch mechanism.
The third step: after the maintenance of the switch point rail and the switch part is finished, the cleaning operation is continuously carried out on the guide curve steel rail and the under-rail structure of the switch connecting part along the direction of the switch, when the switch point rail and the under-rail structure are operated to the switch part, the gaps between the guard rails on two sides and the stock rail and between the guard rails and the fork center part need to be cleaned, and when the gap narrow part is rusted or seriously fouled, the cylindrical grinding head 23 can be replaced by the tapered grinding head 24 to clean the gap.
The fourth step: in-process by the switch blade part to the frog portion cleaning operation, the staff also needs to carry out the inspection in the sight range to each position of switch, it is not hard up to discover to have the bolt, the insecure condition of part, can mark disease department earlier, treat that cleaning operation accomplishes the back, return to the switch blade part by the frog portion and carry out the maintenance operation, to the track part that needs the dismantlement or the mounted position that needs the fastening, the staff can insert the sleeve 22 of different specifications with the square tenon 21 that the third rotated 20 bottom settings, correspond not unidimensional construction bolt, rotate through motor 5 and dismantle, fastening operation, if meet narrow and small space, can also rotate 20 through the drive shaft 9 and the third of changing different length, satisfy the field operation demand.
The foregoing is considered as illustrative of the preferred embodiments of the invention and is understood not to depart from the spirit and scope of the invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims (10)

1. The utility model provides a clean curing means of railway switch which characterized in that: comprises a driving device, a transmission system and a maintenance port system which are connected in sequence; the rotating system can drive the maintenance port system to work under the action of the driving device; the transmission system comprises a first rotating piece and a second rotating piece, wherein the included angle between the axes of the first rotating piece and the second rotating piece is adjustable; the maintenance port system includes a third rotating member drivable by the second rotating member and a grinding head coupled to the third rotating member.
2. The railway switch cleaning and maintaining device of claim 1, wherein: the first rotating part and the second rotating part are connected through a flexible shaft which can be bent flexibly.
3. The railway switch cleaning and maintaining device of claim 1, wherein: the first rotating piece and the second rotating piece are connected through a rigid connecting structure.
4. The railway switch cleaning and maintaining device of claim 3, wherein: the rigid connection structure comprises a first gear, a second gear and an intermediate gear shaft, wherein the first gear is rotatably arranged on the first rotating piece, the second gear is rotatably arranged on the second rotating piece, the intermediate gear shaft is provided with an intermediate gear, the intermediate gear is respectively meshed with the first gear and the second gear, and the axis of the intermediate gear shaft is perpendicular to the rotating axes of the first rotating piece and the second rotating piece.
5. The railway switch cleaning and maintaining device of claim 4, wherein: the rigid connection structure further comprises a bracket, and the intermediate gear shaft is rotatably supported on the bracket.
6. The railway switch cleaning and maintaining device as claimed in any one of claims 1 to 5, wherein: the first rotating part is of a shaft structure or a sleeve, and the second rotating part is of a shaft structure or a sleeve.
7. The railway switch cleaning and maintaining device as claimed in any one of claims 1 to 5, wherein: the driving device comprises a motor and a driving shaft driven by the motor, and the driving shaft is connected with the first rotating piece.
8. The railway switch cleaning and maintaining device of claim 7, wherein: the driving device further comprises a switch heat dissipation opening, the switch is arranged at the front end of the motor holding part and is convenient to switch by a single hand, and the heat dissipation opening is located at the tail part of the motor.
9. The railway switch cleaning and maintaining device as claimed in any one of claims 1 to 5, wherein: the maintenance port system further includes a sleeve removably connected to the third rotating member, the grinding head being removably mountable to the sleeve.
10. A railway switch cleaning and maintenance method which is implemented by the railway switch cleaning and maintenance device of claims 1-9, and is characterized in that: the method comprises the following steps:
1) starting the driving device to drive the grinding head to start rotating;
2) aligning the grinding head to the point of the turnout to be cleaned, and starting cleaning;
3) the angle between the first rotating part and the second rotating part of the transmission system is adjusted as required to control the angle of the cylindrical grinding head so as to adapt to different cleaning positions;
4) when the bottom of the switch rail is rusted or fouled seriously or the turnout switch mechanism is rusted seriously, the cylindrical grinding head can be replaced by a tapered grinding head to clean the gap at the bottom of the switch rail and the connecting gap of the switch mechanism;
5) when the bolt that discovery switch exists needs to be dismantled or screw up, the sleeve of different specifications is changed into in the bistrique dismantlement of third rotation piece bottom, corresponds not unidimensional construction bolt, dismantles, fastening operation.
CN202110380203.8A 2021-04-08 2021-04-08 Railway turnout cleaning and maintaining device and method Pending CN113089563A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110380203.8A CN113089563A (en) 2021-04-08 2021-04-08 Railway turnout cleaning and maintaining device and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110380203.8A CN113089563A (en) 2021-04-08 2021-04-08 Railway turnout cleaning and maintaining device and method

Publications (1)

Publication Number Publication Date
CN113089563A true CN113089563A (en) 2021-07-09

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Country Link
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US4782632A (en) * 1987-10-01 1988-11-08 William Matechuk Drywall sander
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CN202867708U (en) * 2012-10-24 2013-04-10 江苏铁锚工具有限公司 Speed change mechanism of angle grinder
CN104923824A (en) * 2015-05-08 2015-09-23 浙江理工大学 Multifunctional impulse retracting hand drill
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CN210049037U (en) * 2019-05-07 2020-02-11 冯梓航 Steel rail grinding machine

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Publication number Priority date Publication date Assignee Title
US4125968A (en) * 1977-08-10 1978-11-21 Air Tool Service Company High speed grinding tool
US4782632A (en) * 1987-10-01 1988-11-08 William Matechuk Drywall sander
DE10001091A1 (en) * 2000-01-13 2001-07-26 Mets Owerke Gmbh & Co Electric hand tool with toolholder section adjustable by ninety degrees relative to handle with power transmission maintained by bevel gear linkage
EP1719581A1 (en) * 2005-05-02 2006-11-08 Flex-Elektrowerkzeuge GmbH Motorized sander with swivelling head and tool holder
US20090111364A1 (en) * 2007-10-29 2009-04-30 Jinding Group Co., Ltd. Power tool having an eccentric mass
EP2292378A1 (en) * 2009-09-02 2011-03-09 ERGOBIONIK GmbH Motorised hand tool for grinding
CN202867708U (en) * 2012-10-24 2013-04-10 江苏铁锚工具有限公司 Speed change mechanism of angle grinder
CN104923824A (en) * 2015-05-08 2015-09-23 浙江理工大学 Multifunctional impulse retracting hand drill
CN105463960A (en) * 2015-12-22 2016-04-06 常州市瑞泰工程机械有限公司 Steel rail web grinding and derusting machine
CN109202585A (en) * 2018-09-21 2019-01-15 中国冶集团有限公司 The two-sided sander of angle adjustable
CN210049037U (en) * 2019-05-07 2020-02-11 冯梓航 Steel rail grinding machine

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Application publication date: 20210709

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