CN114703703B - Tamping rake, tamping pick, tamping vehicle and tamping method of tamping vehicle - Google Patents
Tamping rake, tamping pick, tamping vehicle and tamping method of tamping vehicle Download PDFInfo
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- CN114703703B CN114703703B CN202210460730.4A CN202210460730A CN114703703B CN 114703703 B CN114703703 B CN 114703703B CN 202210460730 A CN202210460730 A CN 202210460730A CN 114703703 B CN114703703 B CN 114703703B
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- tamping
- rake
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- harrow
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B27/00—Placing, renewing, working, cleaning, or taking-up the ballast, with or without concurrent work on the track; Devices therefor; Packing sleepers
- E01B27/12—Packing sleepers, with or without concurrent work on the track; Compacting track-carrying ballast
- E01B27/20—Compacting the material of the track-carrying ballastway, e.g. by vibrating the track, by surface vibrators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Machines For Laying And Maintaining Railways (AREA)
Abstract
The invention discloses a tamping rake, a tamping pick, a tamping car and a tamping method of the tamping car, wherein the tamping rake comprises a rake body, the rake body comprises an arc-shaped tamping edge, two ends of the arc-shaped tamping edge extend outwards, the rake body extends from the middle part to the arc-shaped tamping edge, the thickness of the rake body is gradually reduced, a plurality of independent damping strips are arranged in the rake body, and the damping strips are embedded in the middle part of the rake body, the position, close to the arc-shaped tamping edge, in the rake body and/or the rake surface of the rake body; a pressure sensor capable of sensing tamping pressure in real time is arranged in the damping strip; the tamping harrow provided by the invention can be used for damping and absorbing energy for the harrow body in the tamping process so as to reduce the crushing of railway ballasts in the tamping process; be equipped with the pressure sensor that can real-time perception tamping pressure in the shock strip, pressure sensor can feed back the pressure data of shock strip department in the harrow body through the transmission line in real time at the tamping in-process to in time adjust the tamping parameter, thereby promote the efficiency of tamping.
Description
Technical Field
The invention relates to a tamping rake, a tamping pick, a tamping vehicle and a tamping method of the tamping vehicle, and belongs to the technical field of railway ballast maintenance.
Background
The ballast track is still one of the most important structural forms of the track in China, however, with the rapidity and the heavy load of a line operation train, the diseases of the ballast track bed are aggravated, mainly manifested as the problems of settlement, deterioration and the like of the track bed, and therefore regular maintenance operation is needed.
The tamping operation is one of important measures for maintaining a ballast track bed, but the ballast can be broken, the broken ballast aggravates the degradation of the track bed, the breaking degree of the ballast is more serious along with the increase of tamping times, the tamping period becomes shorter and shorter, and the serious memory effect caused by tamping is realized.
The main reasons for ballast crushing caused by the tamping pickaxe are as follows: the tamping harrow of the tamping pick is usually made of alloy, although the tamping harrow has the characteristic of high strength, the rigidity is relatively high, and the shape of the existing tamping harrow is relatively wide and not optimally designed. In addition, due to the consistency of the inserting force and the clamping vibration frequency in the inserting process, the inconsistent degradation degree of the track bed at different positions is not considered, and excessive tamping or under-tamping at certain positions is easily caused. Excessive tamping can generate excessive crushing of railway ballast, and under-tamping causes the density of a railway bed to be not up to the standard. In addition, in the process of withdrawing the tamping harrow, the railway ballast is easy to be taken out, so that a large pickaxe pit is formed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a tamping harrow, a tamping pick, a tamping car and a tamping method of the tamping car, which can be applied to railway ballast maintenance operation and reduce or avoid the railway ballast crushing risk in the tamping process.
In a first aspect, the invention provides a tamping harrow, which comprises a harrow body, wherein the harrow body comprises an arc-shaped tamping edge, two ends of the arc-shaped tamping edge extend outwards, and the thickness of the harrow body is gradually reduced from the middle part to the arc-shaped tamping edge.
A plurality of independent damping strips are arranged in the harrow body, and the damping strips are embedded in the middle of the harrow body, the part, close to an arc-shaped tamping edge, in the harrow body and/or the harrow surface of the harrow body; and a pressure sensor capable of sensing tamping pressure in real time is arranged in the damping strip.
Furthermore, the thickness of the rake body is gradually reduced from the middle part to the direction back from the arc tamping edge.
Furthermore, the rake body comprises an arc rake surface with the middle part protruding outwards and a leveling rake surface arranged opposite to the arc rake surface, and a plurality of shock absorption strips are embedded along the leveling rake surface at least.
Furthermore, the laying direction of the damping strips is perpendicular to the tamping direction of the tamping harrow, and the height of the damping strips exposed out of the leveling harrow surface is equal to the distance between every two adjacent damping strips.
Furthermore, the damping strip embedded in the rake surface of the rake body is wedge-shaped, and the damping strip embedded in the rake body and close to the arc-shaped tamping edge is round-bar-shaped.
Further, the material of the shock absorbing strip comprises a carbon fiber composite material.
In a second aspect, the invention provides a tamping pick, which comprises a tamping arm and the tamping harrow, wherein the tamping harrow is detachably connected with the tamping arm through a tamping rod; the tamping arm can drive the tamping harrow to shake under the drive of the excitation driving source.
Further, the tamping pick further comprises a distance sensor, and the distance sensor is used for detecting the distance between the tamping pick and the area to be tamped.
In a third aspect, the invention provides a tamping vehicle, which comprises an outer tamping arm and an inner tamping arm, wherein the outer tamping arm and the inner tamping arm are respectively connected with the tamping harrow; the outer tamping arm and the inner tamping arm are respectively provided with respective distance sensors for detecting the distance between the corresponding tamping arm and the area to be tamped.
In a fourth aspect, the present invention also provides a tamping method for the tamping vehicle described above, the method comprising:
respectively detecting the distances between the outer tamping arm and the area to be tamped and between the inner tamping arm and the area to be tamped, and judging whether the risk of impacting a non-target tamping area exists or not according to the detected distances;
only when there is no risk of hitting a non-target tamping zone, the following operations are performed:
controlling the two tamping rakes to be inserted downwards, and monitoring the pressure on the arc-shaped tamping edge in the process of inserting the two tamping rakes downwards: if the pressure on the arc-shaped tamping edge of any tamping harrow exceeds a set threshold, the downward inserting speed of the two tamping rakes is reduced, and the downward inserting position and the downward inserting angle are adjusted; otherwise, controlling the two tamping rakes to be inserted downwards to a preset depth to execute tamping operation;
in the tamping operation process, the pressure on the rake surfaces of the two tamping rakes is monitored in real time: if the pressure on the rake surfaces of the two tamping rakes does not exceed a set threshold value, the tamping frequency and the amplitude are increased; otherwise, stopping the tamping operation.
Compared with the prior art, the invention has the following beneficial effects:
the damping strips are arranged at one or more of the middle part of the rake body, the position, close to the arc-shaped tamping edge, in the rake body and the rake surface of the rake body, so that the damping and energy absorption of the rake body in the tamping process can be realized, and the crushing of railway ballasts in the tamping process is reduced; the pressure sensor is arranged in the damping strip and can sense tamping pressure in real time, and the pressure sensor can feed back pressure data at the damping strip in the harrow body in real time in the tamping process so as to adjust tamping parameters in time and improve tamping efficiency;
according to the tamping harrow provided by the invention, the thickness of the harrow body is gradually reduced from the middle part to the extension of the arc-shaped tamping edge, so that the resistance of the tamping harrow to penetrate into railway ballast in the downward inserting process can be reduced, and the crushing of railway ballast particles in the tamping downward inserting process is reduced;
according to the tamping rake, the thickness of the rake body extending from the middle part to the direction back from the arc-shaped tamping edge is gradually reduced, so that the phenomena that railway ballasts are splashed in the lifting process of the tamping rake, pickaxe pits are formed in the lifting process of the tamping rake and the like are avoided;
the damping strip embedded in the rake surface of the rake body is wedge-shaped, so that the damping strip has the characteristic of falling prevention, the falling of the damping strip at the rake surface in the tamping process is avoided, and the stability of the damping strip in the tamping process is ensured.
Drawings
Fig. 1 is a schematic structural view of a tamping rake according to an embodiment of the present invention;
FIG. 2 is a side elevational schematic view of the tamping rake of FIG. 1;
FIG. 3 is a schematic view of the structure of the shock bar and pressure sensor of the tamping tool of FIG. 2;
fig. 4 is a schematic structural diagram of a tamping pick provided in accordance with a second embodiment of the present invention;
fig. 5 is a schematic structural view of a tamping pick in a tamping vehicle according to a third embodiment of the present invention;
fig. 6 is a schematic flow chart of a tamping method for a tamping vehicle according to a fourth embodiment of the present invention;
fig. 7 is a schematic diagram of the crash pillow when the tamping pick of the tamping vehicle provided by the third embodiment of the invention is inserted downwards.
In the figure: 1. a rake body; 1-1, shock-absorbing strips; 1-2, a pressure sensor; 2. a tamping rod; 3. a tamping arm; 3-1, distance sensor.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The first embodiment is as follows:
as shown in fig. 1 and 2, the embodiment of the invention provides a tamping rake, which comprises a rake body 1, wherein the rake body 1 comprises an arc-shaped tamping edge extending outwards from two ends, and the thickness of the rake body 1 gradually decreases from the middle part to the arc-shaped tamping edge.
In the technical scheme, the arc tamping edges extending outwards from two ends are arranged, the rake body 1 is gradually thinned from the middle to the extension thickness of the arc tamping edges, the resistance of the tamping rake in the downward inserting process of the ballast can be reduced, and the crushing of ballast particles in the downward inserting process of tamping is reduced.
Referring to fig. 1, the rake face of the rake body 1 may be in an oval shape or a drop shape in the embodiment of the present invention, and the arc-shaped tamping edge refers to the lower edge of the rake body 1 (based on the view shown in fig. 1) which is subjected to the round-corner processing.
The plurality of independent damping strips 1-1 are arranged in the rake body 1, the damping strips 1-1 can be embedded in the rake surface of the rake body 1, but the damping strips 1-1 can also be embedded in the middle of the rake body 1 and in the rake body 1 close to the arc tamping edge, and when the damping strips 1-1 are embedded in the middle of the rake body 1 or in the rake body 1 close to the arc tamping edge, the damping strips 1-1 can be gradually pushed in by opening an installation opening on the side of the rake body 1, so that the damping strips 1-1 can be used as an equivalent replacement of the damping strips 1-1, and damping materials can also be filled in the damping strips.
The damping strip 1-1 is internally provided with a pressure sensor 1-2 capable of sensing tamping pressure in real time, and the pressure sensor 1-2 is arranged in the damping strip 1-1 to avoid the pressure sensor 1-2 from being damaged by strong vibration of tamping operation.
As is known, because the ballast tamped by the tamping harrow is made of gravel materials, and the harrow body 1 is made of alloy materials with high hardness, the tamping harrow provided by the embodiment of the invention has the effect of buffering and damping by embedding the damping strips 1-1 into the harrow body 1, so that the ballast is prevented from being crushed by the tamping pickaxe in the tamping process, the damping strips 1-1 are respectively and independently distributed to form a structure in which the alloy harrow body and the damping strips 1-1 are alternately distributed, and a good buffering and damping effect can be provided on the premise of ensuring that the harrow body 1 has good mechanical strength.
The pressure sensor 1-2 can be an optical fiber pressure sensor, the pressure sensor 1-2 can be connected to an external module through a transmission line, as shown in fig. 1 to 3, the dashed line part in the drawings indicates the trend of the transmission line, the external module can include a display module and a control unit, the display module can display the pressure value sensed by the pressure sensor 1-2 in real time, and the control unit can adjust the relevant parameters of the tamping operation according to the pressure data; the pressure sensor 1-2 can feed back pressure data of the damping strip 1-1 in the rake body 1 to the display module in real time in the tamping process so as to observe tamping operation and adjust tamping parameters in time according to the pressure data.
In order to avoid the occurrence of the situations that the tamping harrow causes the splashing of railway ballasts in the lifting process and causes pick pits in the light lifting process, the extending thickness of the harrow body 1 from the middle part to the back of the arc-shaped tamping edge is gradually reduced.
In order to further reduce the resistance of the rake body 1 penetrating into the railway ballast in the downward inserting process, as shown in fig. 2, the rake body 1 comprises an arc-shaped rake surface with the middle part protruding outwards and a leveling rake surface arranged opposite to the arc-shaped rake surface, as an embodiment of the invention, the leveling rake surface is used as a tamping surface contacted with the railway ballast in the tamping process, and a plurality of shock absorption strips 1-1 can be embedded along the leveling rake surface, so that shock absorption and energy absorption can be carried out between the railway ballast and the leveling rake surface, and the railway ballast is prevented from being crushed in the tamping process.
In order to realize the alternate distribution of the damping strips 1-1 and the rake surface of the rake body 1 and reduce the crushing of the ballast by the rake body 1 in the tamping process, as shown in fig. 1 and fig. 2, the laying direction of the damping strips 1-1 is perpendicular to the tamping direction of the tamping rake, and the height of the damping strips 1-1 exposed out of the flat rake surface is equal to the distance between two adjacent damping strips.
Optionally, the damping strip 1-1 embedded in the rake surface of the rake body 1 is wedge-shaped; because one part of the damping strip 1-1 embedded at the harrow surface is positioned in the harrow body 1 and the other part is positioned outside the harrow body 1, the wedge-shaped structure can ensure that the damping strip 1-1 at the position has the characteristic of falling prevention so as to ensure the stability of the damping strip 1-1 at the harrow surface during tamping; the damping strip 1-1 on the rake surface can be in other shapes as long as the damping strip can play a certain anti-falling function, such as: i-shaped, T-shaped, etc. The damping strip 1-1 which is embedded in the harrow body 1 and is close to the arc tamping edge is in a round strip shape; because the damping strip 1-1 is embedded in the harrow body 1, and the round strip shape has a shape structure without edges and smooth surfaces, the damping strip 1-1 can be conveniently embedded in the harrow body 1. But not limited thereto, the damper strip 1-1 herein may also have other shapes.
It should be noted that the damping strip 1-1 may be adhered to the rake body 1 by glue, so as to achieve the relative fixation between the damping strip 1-1 and the rake body 1, but is not limited thereto, and the damping strip 1-1 may also be fixed to the rake body 1 by other connection manners, such as: welding, and the like.
In order to realize the buffering and damping of the damping strip 1-1 on the rake body 1 and achieve the purpose of reducing or avoiding the breakage of the ballast, as an embodiment of the invention, the damping strip 1 can be made of a carbon fiber composite material. Wherein, the carbon fiber composite material can adopt a carbon fiber-resin composite material; the carbon fiber composite material serving as a substitute of a metal material has the remarkable advantages of impact resistance, fatigue resistance, antifriction and wear resistance, self-lubrication, corrosion resistance, heat resistance and the like, has good damping performance, and can play a role in buffering and damping in the tamping process so as to reduce the crushing of the ballast in the tamping and clamping process. The damping strip 1-1 can also be made of other materials as long as the damping strip 1-1 can realize the buffering and the damping; such as: rubber, silicone, and the like.
In summary, in the tamping rake provided by the embodiment of the invention, the damping strips 1-1 are arranged at one or more of the middle part of the rake body 1, the position close to the arc-shaped tamping edge in the rake body 1 and the rake surface of the rake body 1, so that the damping and energy absorption of the rake body 1 in the tamping process can be realized, and the crushing of railway ballasts in the tamping process can be reduced; the pressure sensor 1-2 capable of sensing tamping pressure in real time is arranged in the shock absorption strip 1-1, the pressure sensor 1-2 is connected to an external module through a transmission line, and the pressure sensor 1-2 can feed back pressure data of the shock absorption strip 1-1 in the rake body 1 in real time through the transmission line in the tamping process, so that a worker can adjust tamping parameters, and tamping efficiency is improved.
Example two:
a tamping pick, as shown in fig. 4, comprises a tamping arm 3 and a tamping rake 1 according to the first embodiment, wherein the tamping rake 1 is detachably connected with the tamping arm 3 through a tamping rod 2; the tamping arm 3 can drive the tamping harrow 1 to shake under the drive of the vibration excitation source.
The utility model provides an embodiment, tamping rod 2 can be with 1 integrated into one piece of tamping harrow, and the one end that tamping rod 2 kept away from tamping harrow 1 can be dismantled with tamping arm 3 and be connected through the locking bolt, when tamping harrow or tamping rod damage, can carry out the change of corresponding part through disassembling the locking bolt.
In order to realize position judgment before the tamping pick is inserted downwards so as to avoid the risk of impacting a non-target tamping area, the tamping pick provided by the embodiment of the invention further comprises a distance sensor 3-1, wherein the distance sensor 3-1 is used for detecting the distance between the tamping pick and the area to be tamped. The distance sensor 3-1 can be arranged on the tamping arm, and information obtained by ranging can be transmitted to an external judging module through a transmission line or wireless transmission so as to judge whether the collision risk exists. As shown in fig. 4, the dotted line in the figure is the direction of the transmission line when the distance sensor 3-1 adopts the transmission line for signal transmission.
Example three:
the embodiment of the invention provides a tamping car, which comprises an outer tamping arm and an inner tamping arm, wherein the outer tamping arm and the inner tamping arm are respectively connected with a tamping rake 1 in the first embodiment; in order to realize the transmission between the tamping arm 3 and the tamping car, a transmission shaft hole and a rotating shaft hole can be formed on the side surface of the tamping arm 3, wherein the hole formed at the upper end of the tamping arm 3 shown in fig. 5 is the transmission shaft hole, and the hole formed at the middle part of the tamping arm 3 is the rotating shaft hole; the tamping arm 3 can be in transmission connection with an excitation driving source at the tamping car through a transmission shaft hole and can be connected with a fixed shaft at the tamping car through a rotating shaft hole; under the drive of the excitation drive source, the tamping arm 3 can rotate in a reciprocating manner by taking the fixed shaft as a circle center so as to drive the tamping pickaxe to shake.
The outer tamping arm and the inner tamping arm are respectively provided with a respective distance sensor 3-1 for detecting the distance between the corresponding tamping arm 3 and the area to be tamped.
The distance sensor 3-1 may be a laser distance sensor.
The tamping car provided by the embodiment of the invention can be applied to operation in ballast track bed maintenance, as shown in fig. 7, before the tamping car is used for inserting the tamping pick, a risk distance value H needs to be set according to specific construction conditions, and then the distance between objects (i.e. sleepers) below is measured by the left and right distance sensors 3-1 to obtain a distance value H and judge whether the tamping pick risks, when one of the left and right distance values H is less than = H, the tamping pick risk is indicated, when the left distance value H is less than = H, the tamping pick risk is indicated as being right, the tamping pick is adjusted leftwards by the tamping car at the moment, and when the distance value H is more than H, the tamping operation can be carried out, and when the right distance value H is less than = H, the tamping pick risk is indicated as being left, the tamping pick is adjusted rightwards by the tamping car at the moment, and when the distance value H is more than H, the tamping pick operation can be carried out.
Example four:
an embodiment of the present invention provides a tamping method for the tamping vehicle according to the third embodiment, as shown in fig. 6, the method includes:
respectively detecting the distances between the outer tamping arm and the to-be-tamped area and between the inner tamping arm and the to-be-tamped area, and judging whether the risk of impacting the non-target tamping area exists or not according to the detected distances; when there is a risk of hitting a non-target tamping area, the position of the tamping pick may be adjusted as described in example three;
only when there is no risk of hitting a non-target tamping zone, the following operations are performed:
controlling the two tamping rakes to be inserted downwards, and monitoring the pressure on the arc-shaped tamping edge in the process of inserting the two tamping rakes downwards: if the pressure on the arc-shaped tamping edge of any tamping harrow exceeds a set threshold, the downward inserting speed of the two tamping rakes is reduced, and the downward inserting position and the downward inserting angle are adjusted; otherwise, controlling the two tamping rakes to be downwards inserted to a preset depth to execute tamping operation;
in the tamping operation process, the pressure on the rake surfaces of the two tamping rakes is monitored in real time: if the pressure on the rake surfaces of the two tamping rakes does not exceed a set threshold value, the tamping frequency and the amplitude are increased; otherwise, stopping the tamping operation.
The distance between the tamping arm, the inner tamping arm and the area to be tamped can be detected by using distance sensors. The pressure between the arc tamping edge and the rake surface can be detected by a pressure sensor.
According to the requirement of specification TB10082-2017 railway track design Specification, the compactness of the ballast bed is not less than 1.7g/cm for high speed transportation, so that the pressure value of the tamping pick when the compactness of the ballast is 1.7g/cm for high speed transportation in the tamping process is calibrated to be used as a judgment basis for judging whether the tamping quality is achieved in the tamping process. The calibration test experiment is only needed to be implemented once, and the numerical value obtained by calibration can be used as a judgment basis subsequently.
Taking the value obtained by the calibration as a standard, when the frequency and the amplitude of tamping are specified, and the pressure value in the process of interpolation is smaller than the calibration value, the compactness of the track bed is indicated to be lower, and at the moment, high-frequency (45-60 HZ) large-amplitude (15-20 mm) tamping can be adopted; when the inserting pressure is in a normal range, tamping by adopting middle-frequency (30-45 HZ) middle-amplitude (10 mm-15 mm); when the inserting pressure is larger than the calibrated value, the compactness is higher, and the tamping is carried out by adopting low frequency (15-30 HZ) and small amplitude (5-10 mm).
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A tamping harrow comprises a harrow body (1), and is characterized in that the harrow body (1) comprises an arc-shaped tamping edge with two ends extending outwards, and the thickness of the harrow body (1) is gradually reduced from the middle part to the arc-shaped tamping edge;
a plurality of independent damping strips (1-1) are arranged in the rake body (1), and the damping strips (1-1) are embedded in the middle of the rake body (1), the position, close to an arc-shaped tamping edge, in the rake body (1) and/or the rake surface of the rake body (1); and a pressure sensor (1-2) capable of sensing tamping pressure in real time is arranged in the damping strip (1-1).
2. Tamping rake according to claim 1, wherein the rake body (1) extends from the middle part back to the arcuate tamping edge with a gradually decreasing thickness.
3. Tamping rake according to claim 1, wherein the rake body (1) comprises an arc-shaped rake surface with an outwardly convex middle portion and a flat rake surface arranged opposite to the arc-shaped rake surface, and a plurality of shock absorbing strips (1-1) are embedded at least along the flat rake surface.
4. The tamping rake according to claim 3, wherein the direction of the shock-absorbing strips (1-1) is perpendicular to the tamping direction of the tamping rake, and the height of the shock-absorbing strips (1-1) exposed outside the leveling rake surface is equal to the distance between two adjacent shock-absorbing strips.
5. Tamping rake according to claim 1, wherein the damping strips (1-1) embedded in the rake face of the rake body (1) are wedge-shaped, and the damping strips (1-1) embedded in the rake body (1) close to the curved tamping edge are round strip-shaped.
6. Tamping rake according to any of claims 1 to 5, wherein the material of the shock-absorbing strip (1-1) comprises carbon fibre composite material.
7. A tamping pick comprising a tamping arm, characterized in that it further comprises a tamping rake according to any one of claims 1 to 6, which is detachably connected to the tamping arm (3) by means of a tamping rod (2); the tamping arm (3) can drive the tamping harrow to shake under the drive of the vibration excitation driving source.
8. The tamping pick of claim 7, comprising a distance sensor (3-1), said distance sensor (3-1) being adapted to detect the distance of the tamping pick from the area to be tamped.
9. A tamping vehicle comprising an outer tamping arm and an inner tamping arm, to which are respectively connected a tamping rake as claimed in any one of claims 1 to 5; the outer tamping arm and the inner tamping arm are respectively provided with a respective distance sensor (3-1) for detecting the distance between the corresponding tamping arm (3) and the area to be tamped.
10. A method of tamping a tamper vehicle as recited in claim 9, said method comprising:
respectively detecting the distances between the outer tamping arm and the to-be-tamped area and between the inner tamping arm and the to-be-tamped area, and judging whether the risk of impacting the non-target tamping area exists or not according to the detected distances;
only when there is no risk of hitting a non-target tamping zone, the following operations are performed:
controlling the two tamping rakes to be inserted downwards, and monitoring the pressure on the arc-shaped tamping edge in the process of inserting the two tamping rakes downwards: if the pressure on the arc-shaped tamping edge of any tamping harrow exceeds a set threshold, the downward inserting speed of the two tamping rakes is reduced, and the downward inserting position and the downward inserting angle are adjusted; otherwise, controlling the two tamping rakes to be downwards inserted to a preset depth to execute tamping operation;
in the tamping operation process, the pressure on the rake surfaces of the two tamping rakes is monitored in real time: if the pressure on the rake surfaces of the two tamping rakes does not exceed a set threshold value, the tamping frequency and the amplitude are increased; otherwise, stopping the tamping operation.
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| CN201254680Y (en) * | 2008-09-08 | 2009-06-10 | 成都新宇工务机具有限公司 | Tamping pick head |
| CN201901822U (en) * | 2010-05-26 | 2011-07-20 | 李家林 | Vibrating frame of tamping machine and hydraulic tamping machine using vibrating frame |
| AT518195B1 (en) * | 2016-01-26 | 2017-11-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Method for compacting the ballast bed of a track and tamping unit |
| FI127934B (en) * | 2017-05-19 | 2019-05-31 | West Ter Oy | Method and device for measuring ballast elasticity |
| AT520056B1 (en) * | 2017-05-29 | 2020-12-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Method and device for compacting a track ballast bed |
| CN110685198A (en) * | 2018-07-04 | 2020-01-14 | 中国铁建高新装备股份有限公司 | Sleeve rail tamping car and corresponding operation method |
| AT522406A1 (en) * | 2019-04-11 | 2020-10-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Tamping pick and method of tamping a track |
| CN212771768U (en) * | 2020-06-02 | 2021-03-23 | 株洲时代电子技术有限公司 | Tamping operation sleeper position acquisition device |
| CN216141819U (en) * | 2021-07-19 | 2022-03-29 | 武汉理工大学 | Sleeper tamping device |
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