WO2020192251A1 - 一种含偏心激振机构的捣固装置及其相应的捣固方法 - Google Patents
一种含偏心激振机构的捣固装置及其相应的捣固方法 Download PDFInfo
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- WO2020192251A1 WO2020192251A1 PCT/CN2020/071948 CN2020071948W WO2020192251A1 WO 2020192251 A1 WO2020192251 A1 WO 2020192251A1 CN 2020071948 W CN2020071948 W CN 2020071948W WO 2020192251 A1 WO2020192251 A1 WO 2020192251A1
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- clamping
- tamping
- joint
- clamping device
- eccentric
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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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- 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
- E01B27/13—Packing sleepers, with or without concurrent work on the track
- E01B27/16—Sleeper-tamping machines
Definitions
- the invention relates to a tamping device, which belongs to the technical field of railway maintenance machinery design and manufacture.
- Tamping operation is one of the main tasks of ballasted railway track bed maintenance, which can effectively improve the stability of the track bed and ensure the safety of trains.
- the type of tamping device widely used is relatively single. Some tamping devices are too complex in structure, resulting in low working reliability and poor engineering application. It is necessary to develop a tamping device with simple and reliable structure and high engineering application value.
- the PCT invention patent with the international application number PCT/EP2009/002447 discloses a tamping device for tamping the sleeper part, which includes two internal tamping units and two external tamping units, each of which is external tamping unit
- the pivot pin capable of pivoting about the longitudinal extension of the tamping device relative to the guide block is connected to the rotation driving member, and the guide block is movably connected to the lateral guide member and the lateral sliding driving member.
- the tamping tool of the external tamping unit is therefore arranged at the maximum distance from the center of the tamping device to tamping the branch rail of the track.
- the tamping device disclosed in this patent can achieve the purpose of tamping the stone ballast, but its structure Complex, poor engineering application.
- the invention provides a tamping device with an eccentric vibration excitation mechanism and a corresponding tamping method, which are used for the tamping operation of a ballasted railway track bed, with simple and reliable structure and high engineering application value.
- the first aspect of the present invention provides a tamping device with an eccentric vibration excitation mechanism, including an excitation device, a tensioning and closing driving device, a clamping device, the clamping device is connected to a fixed frame, and the excitation device is connected to the tensioning device.
- the opening and closing driving device is connected to the clamping device, the excitation device adopts an eccentric shaft structure, and the plane of the axis of the eccentric shaft is parallel to the movement plane of the clamping device.
- the vibration excitation device includes rotational power connected to the eccentric shaft, the outer side of the eccentric shaft is provided with a sleeve, and the rotational power drives the eccentric shaft to rotate.
- the rotation power is preferably an electric motor or a hydraulic motor.
- two sets of said shaft sleeves are installed, one set adopts a single-layer structure, one set adopts a double-layer structure and nested installation, that is, it is preferable to install a single-layered first sleeve on one side of the eccentric shaft.
- a set of second shaft sleeves with a double-layer structure are installed on the other side of the eccentric shaft. The first shaft sleeve and the second shaft sleeve surround the outer side of the eccentric shaft at 360 degrees.
- One end of the expansion and closing driving device is connected with the shaft sleeve, and the other end is connected with the clamping device.
- the rotation axis of one end of the expansion and closing driving device connected with the shaft sleeve is perpendicular to the movement plane of the clamping device.
- One end of the expansion and closing driving device connected with the clamping device has two movement pairs, that is, the rotation axis is perpendicular to the movement plane of the clamping device and the rotation axis is parallel to the movement plane of the clamping device.
- Both ends of the expansion and closing driving device are extendable and preferably driven by an oil cylinder.
- connection point between the excitation device and the opening and closing driving device constitutes joint one, and the connection point between the opening and closing driving device and the clamping device constitutes joint two.
- the second joint includes a second transverse joint and a second longitudinal joint, wherein the expansion and closing driving device is connected to the second transverse joint of the second joint, and the clamping device is connected to the second longitudinal joint of the second joint.
- the second rotation axis of the transverse joint is perpendicular to the movement plane of the clamping device, and the second rotation axis of the longitudinal joint is parallel to the movement plane of the clamping device.
- the second transverse joint makes the expansion and closing driving device and the second joint rotate relatively, so as to transmit the vibration generated by the vibration excitation device to the clamping device.
- the second longitudinal joint enables the expansion and closing driving device to swing along the axis of the second longitudinal joint, so that only the motion generated by the excitation device on the movement plane of the clamping device is transmitted to the clamping device, eliminating the influence of movement in other directions on the clamping device .
- the clamping device is preferably arranged symmetrically with respect to the axis where the eccentric shaft is located, and the two clamping devices arranged symmetrically are respectively connected to the fixed frame, and the connection point between the clamping device and the fixed frame constitutes joint three.
- the clamping device includes a clamping arm and a clamping pick.
- the clamping pick is fixed at the lower end of the clamping arm.
- the clamping pick and the clamping arm are detachably connected.
- the clamping arm can rotate around the axis of the third joint, and the axis of the third joint is preferably arranged in the middle of the clamping arm.
- the opening and closing driving device is preferably arranged symmetrically with respect to the eccentric axis.
- the expansion and closing driving device and the clamping device respectively move around the axis of the joint 1, joint 2, and joint 3, so that the clamping pick is Horizontal swing and small vibration within a certain angle range can realize the movement of the stone ballast under the sleeper and promote the flow of the stone ballast, which is convenient for improving the effect of tamping operation.
- the vibration excitation device There are two working modes of the vibration excitation device, namely, the first mode: the working condition of vibrating throughout the working process, or the second mode: the full process vibration of the clamping pick contacting the ballast of the ballast bed, other processes are not performed vibration.
- the first mode is relatively simple to control, but long-term vibration is likely to cause damage to the mechanical structure or reduced service life.
- the second mode is beneficial to the service life of the mechanical structure, but has higher requirements for the repeated starting ability and starting response speed of the vibration device.
- the second aspect of the present invention provides an eccentric vibration tamping method
- Step S1 Place the tamping device on the road section to be tamped, turn on the rotation power of the tamping device, and the clamping device is driven by the rotation power to drive the clamping device to swing at low amplitude and high frequency in the vertical plane;
- Step S2 Turn on the insertion device and insert the ramming pick into the stone ballast beside the sleeper to be tamped;
- Step S3 Turn on the opening and closing driving device, drive the second joint to swing substantially, the swing of the second joint is rotated around the third joint through the clamping device, and is transmitted to the end of the clamping pick, thereby realizing the clamping action of the end of the clamping pick;
- the clamping action lasts for a period of time;
- Step S4 After the tamping operation is completed, lift the lower insertion device to make the clamping pick leave the stone ballast, and enter the next operation position to continue the operation or drive away from the operation section.
- step S1-step S3 when the clamping device is in contact with the stone ballast, the rotation power is turned on, and the clamping device is accompanied by vibration; when the clamping device leaves the stone ballast, the rotation power is cut off, and the clamping device stops vibrating, and is to be inserted again When the stone ballast starts the tamping operation, the rotation power is turned on again.
- step S4 the clamping pick is turned off after leaving the stone ballast, and turned on again when it enters the next working position and starts working.
- the tamping device descends along the lower insert frame, and the clamping pick is inserted into the ballast of the track bed under the sleeper.
- the insertion is accompanied by high-frequency vibration, which is conducive to the insertion of the clamping pick.
- the expansion and closing drive device extends to push the clamping pick
- the clamping action is still accompanied by high-frequency vibration at this time, which is conducive to the flow of ballast on the ballast bed.
- the tamping device is lifted, and the opening and closing driving device is retracted at the same time, and the clamping pick is opened; so far, a tamping action is completed.
- the second rotation axis of the transverse joint is perpendicular to the movement plane of the clamping device, and the second rotation axis of the longitudinal joint is parallel to the movement plane of the clamping device.
- the second transverse joint makes the expansion and closing driving device and the second joint rotate relatively, so as to transmit the vibration generated by the vibration excitation device to the clamping device.
- the second longitudinal joint enables the expansion and closing driving device to swing along the axis of the second longitudinal joint, so that only the motion generated by the excitation device on the movement plane of the clamping device is transmitted to the clamping device, eliminating the influence of movement in other directions on the clamping device .
- the expansion and closing driving device and the clamping device respectively move around the axis of the joint 1, joint 2, and joint 3, so that the clamping pick is Horizontal swing and small vibration within a certain angle range can realize the movement of the stone ballast under the sleeper and promote the flow of the stone ballast, which is convenient for improving the effect of tamping operation.
- the eccentric excitation tamping method according to the second aspect of the present invention adopts the tamping device with the eccentric excitation mechanism according to the first aspect of the present invention.
- the vibration excitation device vibrates during the entire working process; the vibration excitation device vibrates during the entire process of the clamping pick contacting the ballast of the ballast bed, and does not vibrate in other processes.
- the first mode is relatively simple to control, but long-term vibration is likely to cause damage to the mechanical structure or reduced service life.
- the second mode is beneficial to the service life of the mechanical structure, but has higher requirements for the repeated starting ability and starting response speed of the vibration device.
- the present invention has the following advantages and effects: the technical scheme of the present invention is used for the tamping operation of ballasted railway track beds, the structure is simple and reliable, and the engineering application value is high.
- Figure 1 is a schematic structural diagram of a preferred embodiment of a tamping device with an eccentric vibration excitation mechanism according to the present invention
- FIG. 2 is a schematic diagram of the working state of the embodiment shown in Figure 1;
- Figure 3- Figure 5 are schematic diagrams of the vibration principle of the movement mechanism on the XY plane of the embodiment shown in Figure 1;
- Figures 6-8 are schematic diagrams of the vibration principle of the movement mechanism on the XZ plane of the embodiment shown in Figure 1;
- FIG. 9 is a schematic diagram of the structure of the single-layer shaft sleeve in the embodiment shown in FIG. 1;
- FIG. 10 is a schematic diagram of the structure of the double-layer shaft sleeve in the embodiment shown in FIG. 1;
- Vibration device 11 rotation power, 12 eccentric shaft, 13 bushing, 131 bushing one, 132 bushing two, 2 opening and closing drive device, 3 clamping device, 31 clamping arm, 32 clamping pick, 4 fixed Frame, 5 joints one, 6 joints two, 61 horizontal joints two, 62 longitudinal joints two, 7 joints three, 8 insert frames, 9 sleepers, 10 ballasts.
- Embodiment 1.1 As shown in FIG. 1, a preferred embodiment of a tamping device with an eccentric vibration excitation mechanism according to the present invention is shown, which includes an excitation device 1, an opening and closing driving device 2, and a clamping device 3. For ease of illustration, the establishment of a coordinate system is shown in Figure 1.
- the coordinate system includes X, Y, and Z three-dimensional directions, where X is the direction in which the rail extends, Y is the direction parallel to the sleeper, and Z is the vertical direction.
- the excitation device 1 includes a rotating power 11, an eccentric shaft 12, and a shaft sleeve 13.
- the rotating power 11 drives the eccentric shaft 12 to rotate, and the sleeve 13 is installed outside the eccentric shaft 12.
- the shaft sleeve 13 includes two sets. One set adopts a single-layer structure, namely, sleeve one 131, and the other adopts a double-layer structure, namely, sleeve two 132. The two are nested and installed outside the eccentric shaft 12.
- shaft sleeve one 131 and shaft sleeve two 132 are shown in Figure 9-10.
- the advantage of using single-layer shaft sleeve and double-layer shaft sleeve together is: ensuring that the clamping devices on both sides are in the same plane, while the shaft sleeve is stressed Good and long life.
- the two ends of the stretch-and-close driving device 2 are telescopic, and are preferably oil cylinders.
- One end of the expansion and closing driving device 2 is hinged with the sleeve 13 through a joint 5, the rotation axis of the expansion and closing driving device 2 is perpendicular to the movement plane of the clamping device (XZ plane) at the joint 5, and the other end of the expansion and closing driving device 2 passes through the joint
- the second 6 is connected to the clamping device 3.
- the second joint 6 includes a horizontal joint two 61 whose rotation axis is located in the XY plane and a longitudinal joint two 62 whose rotation axis is located on the XZ plane.
- connection includes two kinematic pairs: namely through the horizontal joint two 61
- the rotation axis is perpendicular to the movement plane (XZ plane) of the clamping device; and for the hinged joint through the longitudinal joint 62, the rotation axis is parallel to the clamping device movement plane (XZ plane).
- the clamping device 3 includes a clamping arm 31 and a clamping pick 32.
- the clamping pick 32 is fixedly installed at the lower end of the clamping arm 31.
- the clamping pick 32 and the clamping arm 31 are removable.
- the clamping arm 31 is hinged with the fixed frame 4 through the joint three 7 and the rotation axis of the rotating shaft between the clamping arm 31 and the joint three 7 is perpendicular to the movement plane (XZ plane) of the clamping device.
- the clamping arm 31 can rotate around the rotation axis, and the joint 7 is preferably arranged in the middle of the clamping arm 31.
- FIGS 3-8 are schematic diagrams of the vibration principle movement mechanism of the embodiment of the invention.
- Figures 3 to 5 show the movement of the XY plane
- Figures 3 to 5 show the state of the expansion and closing driving device 2 parallel to the X axis, the state of the eccentric shaft 12 rotating through a certain angle, and the comparison of the two states.
- "0" in the figure represents the center of rotation of the eccentric shaft. It can be seen that with the rotation of the eccentric shaft 12, the opening and closing driving device 2 swings, and at the same time the joint two 6 reciprocates along the X axis. Through the reciprocating movement of the joint two 6, the vibration is transmitted to the clamping device 3.
- Figures 6-8 show the movement of the XZ plane.
- Figures 6-8 show the state of the clamping pick 32 parallel to the Z axis, the state of the clamping pick 32 rotating at a certain angle, and the comparison of the two states. It can be seen that the movement at the second joint 6 is rotated by the clamping device 3 around the joint three 7 and is transmitted to the end of the clamping pick 32, thereby realizing the vibration of the end of the clamping pick 32. The opening and closing movement of the opening and closing driving device 2 is also transmitted to the end of the clamping pick 32 in this way, and the clamping action of the clamping pick 32 is realized.
- a tamping device with an eccentric vibration excitation mechanism is installed on a lower insertion frame 8.
- the tamping device with an eccentric vibration excitation mechanism can move up and down along the lower insertion frame 8 for lower insertion and lifting actions.
- the eccentric shaft 12 rotates under the drive of the rotating power 11, so that the shaft sleeve 13 is forced to vibrate, and then the vibration is transmitted in turn until the end of the pick 32 is clamped.
- the expansion and closing driving device 2 can make a telescopic movement, and then drive the clamping arm 31 to rotate around the joint three 7, and then drive the clamping pick 32 to perform clamping and opening actions.
- the tamping device When the tamping device is in operation, the tamping device descends along the insertion frame 8, and the clamping pick 32 is inserted into the ballast 10 of the lower part of the sleeper 9.
- the insertion is accompanied by high-frequency vibration, which is beneficial to the insertion of the clamping pick 32.
- the expansion and closing driving device 2 After the insertion, the expansion and closing driving device 2 extends and pushes the clamping pick 32 to perform a clamping action. At this time, it is still accompanied by high-frequency vibration, which is beneficial to the flow of the ballast 10 on the ballast.
- the tamping device After the clamping action is completed, the tamping device is lifted, at the same time the expansion and closing driving device 2 is retracted, and the clamping pick 32 is opened. At this point, a tamping action is completed.
- the present utility model/invention proposes two vibration modes:
- Vibration mode 1 The vibration excitation device 1 vibrates during the entire working process
- Vibration mode 2 The vibration excitation device 1 vibrates during the whole process when the clamping pick 32 contacts the ballast 10 of the ballast bed, and does not vibrate in other processes.
- the invention is characterized in that the rotation axis of the eccentric shaft 12 is parallel to the movement plane (XZ plane) of the clamping device, and the vibration generated by the eccentric shaft 12 is transmitted to the clamping through three joints, namely joint one 5, joint two 6, and joint three 7. Pick 32 ends.
- Embodiment 2.1 An eccentric vibration tamping method, which includes the following contents 1-4:
- the tamping device descends along the lower insert frame, and the clamping pick is inserted into the ballast of the track bed under the sleeper.
- the insertion is accompanied by high-frequency vibration, which is conducive to the insertion of the clamping pick.
- the expansion and closing drive device extends to push the clamping pick
- the clamping action is still accompanied by high-frequency vibration at this time, which is conducive to the flow of ballast on the ballast bed.
- the tamping device is lifted, and the opening and closing driving device is retracted at the same time, and the clamping pick is opened; so far, a tamping action is completed.
- the second rotation axis of the transverse joint is perpendicular to the movement plane of the clamping device, and the second rotation axis of the longitudinal joint is parallel to the movement plane of the clamping device.
- the second transverse joint makes the expansion and closing driving device and the second joint rotate relatively, so as to transmit the vibration generated by the vibration excitation device to the clamping device.
- the second longitudinal joint enables the expansion and closing driving device to swing along the axis of the second longitudinal joint, so that only the motion generated by the excitation device on the movement plane of the clamping device is transmitted to the clamping device, eliminating the influence of movement in other directions on the clamping device .
- the expansion and closing driving device and the clamping device respectively move around the axis of the joint 1, joint 2, and joint 3, so that the clamping pick is Horizontal swing and small vibration within a certain angle range can realize the movement of the stone ballast under the sleeper and promote the flow of the stone ballast, which is convenient for improving the effect of tamping operation.
- the vibration excitation device 1 vibrates during the entire operation.
- Embodiment 2.2 An eccentric vibration tamping method, including the same steps as Embodiment 2.1, the difference lies in:
- step 1 to step 3 when the clamping device contacts the stone ballast, the rotation power is turned on, and the clamping device vibrates in the XZ plane; when the clamping device leaves the stone ballast, the rotation power is cut off, and the clamping device stops vibrating.
- the rotating power is turned on again, and the clamping device vibrates in the XZ plane at the same time as the tamping operation.
- step 4 the gripping pick is turned off after leaving the stone ballast, and turned on again when it enters the next working position and starts working.
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Claims (14)
- 一种含偏心激振机构的捣固装置,包括激振装置(1)、张合驱动装置(2),夹持装置(3),该夹持装置(3)连接于固定框架(4),激振装置(1)连接所述张合驱动装置(2),该张合驱动装置(2)连接夹持装置(3),其特征在于:激振装置(1)采用偏心轴结构,该偏心轴的轴线所在平面与夹持装置(3)的运动平面平行。
- 如权利要求1所述的含偏心激振机构的捣固装置,其特征在于:激振装置(1)包括旋转动力(11),该旋转动力(11)连接偏心轴(12),该偏心轴(12)的外侧装有轴套(13),旋转动力(11)带动偏心轴(12)旋转。
- 如权利要求1所述的含偏心激振机构的捣固装置,其特征在于:轴套(13)包括两套,一套采用单层结构,一套采用双层结构,两套轴套相互嵌套安装。
- 如权利要求1所述的含偏心激振机构的捣固装置,其特征在于:张合驱动装置(2)一端与轴套(13)连接,另一端与夹持装置(3)连接,与轴套(13)连接的张合驱动装置(2)的一端的旋转轴线垂直于夹持装置(3)运动平面。
- 如权利要求1所述的含偏心激振机构的捣固装置,其特征在于:激振装置(1)与张合驱动装置(2)之间的连接点构成接头一(5),张合驱动装置(2)与夹持装置(3)之间的连接点构成接头二(6)。
- 如权利要求1所述的含偏心激振机构的捣固装置,其特征在于:接头二(6)包括横向接头二(61)和纵向接头二(62),其中,张合驱动装置(2)连接于横向接头二(61),夹持装置(3)连接于纵向接头二(62)。
- 如权利要求6所述的含偏心激振机构的捣固装置,其特征在于:横向接头二(61)的转动轴与夹持装置(3)的运动平面垂直,纵向接头二(62)转动轴与夹持装置(3)的运动平面平行,横向接头二(61)使得张合驱动装置(2)与接头二(6)之间 相对转动,从而将激振装置(1)产生的振动传递到夹持装置(3)。
- 如权利要求1所述的含偏心激振机构的捣固装置,其特征在于:纵向接头二(62)使张合驱动装置(2)可沿纵向接头二(62)的轴线摆动,从而仅将激振装置(1)产生在夹持装置(3)运动平面的运动传递给夹持装置(3),消除其他方向的运动对夹持装置(3)的影响。
- 如权利要求1所述的含偏心激振机构的捣固装置,其特征在于:夹持装置(3)关于所述偏心轴(12)所在的轴线对称布置,对称布置的两个夹持装置(3)分别连接固定框架(4),该夹持装置(3)与固定框架(4)之间的连接点构成接头三(7),张合驱动装置(2)关于偏心轴(12)对称布置。
- 如权利要求1所述的含偏心激振机构的捣固装置,其特征在于:夹持装置(3)包括夹持臂(31)和夹持镐(32),夹持镐(32)固定于夹持臂(31)下端,夹持镐(32)与夹持臂(31)可拆装连接;夹持臂(31)能够绕接头三(7)的轴线转动。
- 如权利要求10所述的含偏心激振机构的捣固装置,其特征在于:接头三(7)的轴线布置于夹持臂(31)中部。
- 一种偏心激振捣固方法,其包括:步骤S1:将捣固装置置于待捣固路段,开启捣固装置的旋转动力,张合驱动装置在旋转动力带动下驱动夹持装置在竖直平面内低幅高频摆动;步骤S2:开启下插装置,使捣镐下插进入待捣固轨枕旁边的石砟中;步骤S3:开启张合驱动装置,驱动接头二大幅摆动,接头二处的摆动通过夹持装置绕接头三转动,传递到了夹持镐端部,从而实现了夹持镐端部的夹持动作;夹持动作持续一段时间;步骤S4:待捣固作业完成后,提起下插装置使夹持镐离开石砟,并进入下一作业位置继续作业或驶离作业路段。其特征在于:步骤S1-步骤S3中,夹持装置在接触石砟时旋转动力开启,夹持装置在竖直平面内振动;夹持装置离开石砟时,旋转动力切断,夹持装置停止振动,待再次***石砟开始捣固作业时,旋转动力再次开启,捣固作业的同时,夹持装置在竖直平面内振动。
- 如权利要求12所述的偏心激振捣固方法,其特征在于:步骤S4中,夹持镐离开石砟后关闭旋转动力,进入下一作业位置开始作业时再次开启。
- 如权利要求12所述的偏心激振捣固方法,其特征在于:在激振装置与张合驱动装置的共同作用下,张合驱动装置、夹持装置各自以接头一、接头二、接头三的轴线为中心运动,从而使得夹持镐在一定角度范围内做横向摆动及小幅振动,实现石砟向轨枕下方运动,并促进石砟的流动,便于提高捣固作业的效果。
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KR1020217026396A KR20210138001A (ko) | 2019-03-22 | 2020-01-14 | 편심 진동 여기 메카니즘을 갖는 탬핑 장치 및 그 탬핑 방법 |
BR112021012332-6A BR112021012332A2 (pt) | 2019-03-22 | 2020-01-14 | Dispositivo de compactação contendo mecanismo de excitação de vibração excêntrica, e método de compactação por excitação excêntrica |
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CN201910221784.3A CN111719355A (zh) | 2019-03-22 | 2019-03-22 | 一种含偏心激振机构的捣固装置及其相应的捣固方法 |
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KR (1) | KR20210138001A (zh) |
CN (1) | CN111719355A (zh) |
BR (1) | BR112021012332A2 (zh) |
WO (1) | WO2020192251A1 (zh) |
Cited By (3)
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KR102367598B1 (ko) * | 2021-10-20 | 2022-03-31 | 한국철도공사 | 굴삭기 장착형 철도궤도 자갈 다짐기 |
WO2023005803A1 (zh) * | 2021-07-28 | 2023-02-02 | 常州中车瑞泰装备科技有限公司 | 一种激振捣固装置 |
CN116305506A (zh) * | 2023-05-25 | 2023-06-23 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | 一种基于有砟轨道状态的捣固镐选取方法 |
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CN116305506A (zh) * | 2023-05-25 | 2023-06-23 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | 一种基于有砟轨道状态的捣固镐选取方法 |
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BR112021012332A2 (pt) | 2021-10-19 |
KR20210138001A (ko) | 2021-11-18 |
CN111719355A (zh) | 2020-09-29 |
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