Electric-driven tamping device, tamping vehicle and tamping method thereof

Abstract

An embodiment of the present application provides an electric tamping device, a tamping vehicle and a tamping method thereof, wherein the electric tamping device includes: a support box and at least one group of pick arm assemblies, each group of the pick arm assemblies includes a first pick arm and a second pick arm, and the two sides of the support box are hinged to the middle of the first pick arm and the middle of the second pick arm respectively; a first electromagnetic excitation assembly is also provided between the support box and the first pick arm; a second electromagnetic excitation assembly is also provided between the support box and the second pick arm; an opening and closing drive assembly is hinged between the middle of the support box and the top of the first pick arm and the top of the second pick arm; a first tamping pick is connected to the bottom of the first pick arm, and a second tamping pick is connected to the bottom of the second pick arm, and the first tamping pick and the second tamping pick perform tamping operations from both sides of the sleeper respectively; it has a simple structure, is easy to operate, and can achieve the beneficial effects of amplitude control and frequency control; it is suitable for the field of railway line maintenance technology.

Description

Technical Field

[0001] The present application relates to the technical field of railway line maintenance and repair, and in particular to an electric-driven tamping device, a tamping vehicle and a tamping method thereof. Background Art

[0002] Tamping is a key component of ballasted railway trackbed maintenance, effectively improving its stability and ensuring train safety. The tamping device, a core component of tamping, combines both excitation and clamping functions. The tamping pick transfers the vibrations generated by the excitation to the ballast, causing it to vibrate and move, increasing the density of the trackbed. Simultaneously, the tamping pick, under the clamping force, squeezes the ballast between the sleepers toward the bottom of the sleepers, making the ballast at the bottom more compact, improving track stability and ensuring train safety.

[0003] The tamping device outputs appropriate excitation frequency and amplitude through excitation according to different roadbed conditions, which is the key to the working efficiency of the tamping pick.

[0004] Currently, most tamping devices use eccentric shaft rotation to generate vibration, resulting in complex structures and difficult maintenance. A small number of tamping devices use hydraulic reversing valves to achieve vibration excitation. These types of tamping devices require a large number of hydraulic accumulators to ensure oil supply, making the hydraulic system complex and costly. Summary of the Invention

[0005] In order to solve one of the above-mentioned technical defects, an embodiment of the present application provides an electric tamping device, a tamping vehicle and a tamping method thereof with a simple structure and easy operation.

[0006] According to the first aspect of the embodiment of the present application, an electric-driven tamping device is provided, comprising: a support box and at least one group of pick arm assemblies; each group of the pick arm assemblies comprises a first pick arm and a second pick arm, and the two sides of the support box are hinged to the middle of the first pick arm and the middle of the second pick arm, respectively; a first electromagnetic excitation assembly is further provided between the support box and the first pick arm; a second electromagnetic excitation assembly is further provided between the support box and the second pick arm; an opening and closing drive assembly is hinged between the middle of the support box and the top of the first pick arm and the top of the second pick arm; a first tamping pick is connected to the bottom of the first pick arm, and a second tamping pick is connected to the bottom of the second pick arm, and the first tamping pick and the second tamping pick perform tamping operations from both sides of the sleeper, respectively.

[0007] Preferably, the first electromagnetic excitation component includes a first electromagnetic moving body and a first electromagnetic fixed body; the first electromagnetic moving body is arranged at the upper or lower part of the first pick arm, and the first electromagnetic fixed body is arranged at a place on the support box corresponding to the first electromagnetic moving body; the second electromagnetic excitation component includes a second electromagnetic moving body and a second electromagnetic fixed body; the second electromagnetic moving body is arranged at the upper or lower part of the second pick arm, and the second electromagnetic fixed body is arranged at a place on the support box corresponding to the second electromagnetic moving body.

[0008] Preferably, the first electromagnetic fixed body is a fan-shaped ring structure composed of a plurality of first electromagnetic blocks evenly distributed along the movement direction of the first electromagnetic moving body; the magnetic properties of the first electromagnetic block arranged on one side of the first electromagnetic moving body are the same as the magnetic properties of the first electromagnetic moving body; the magnetic properties of the first electromagnetic block arranged on the other side of the first electromagnetic moving body are opposite to the magnetic properties of the first electromagnetic moving body.

[0009] Preferably, the second electromagnetic fixed body is a fan-shaped ring structure composed of a plurality of second electromagnetic blocks evenly distributed along the movement direction of the second electromagnetic moving body; the magnetic properties of the second electromagnetic block arranged on one side of the second electromagnetic moving body are the same as the magnetic properties of the second electromagnetic moving body; the magnetic properties of the second electromagnetic block arranged on the other side of the second electromagnetic moving body are opposite to the magnetic properties of the second electromagnetic moving body.

[0010] Preferably, an elastic component is provided between the top of the support box and the two opening and closing drive components; one end of the elastic component is hinged to the top of the support box through a hinge, and the other end of the elastic component is connected to the cylinder end of the opening and closing drive component.

[0011] Preferably, the electric tamping device also includes a control component, and sensors are provided on the first pick arm and the second pick arm; the control component is electrically connected to the two opening and closing drive components, the first electromagnetic moving body, the first electromagnetic block, the second electromagnetic moving body, the second electromagnetic block, and the sensors.

[0012] According to the second aspect of the embodiment of the present application, a tamping vehicle is provided, comprising a tamping vehicle body and an electric tamping device, wherein the electric tamping device is any of the electric tamping devices described above; at least one vertical guide column is connected to the tamping vehicle body, the bottom of the vertical guide column passes through the support box, and a vertical oil cylinder is arranged between the support box and the vertical guide column.

[0013] According to a third aspect of an embodiment of the present application, a tamping method using a tamping vehicle is provided, comprising the following steps:

[0014] S10: The tamping vehicle moves to the area where tamping is required, drives the vertical oil cylinder to drive the support box to move downward along the vertical guide column, and the support box drives the electric tamping device to move downward as a whole;

[0015] S20, the electrically driven tamping device moves downward until the first tamping pick and the second tamping pick are inserted into the ballast below the sleeper;

[0016] S30, the opening and closing drive assembly drives the first pick arm and the second pick arm respectively to drive the first tamping pick and the second tamping pick to perform tamping alternately;

[0017] S40, during the alternating tamping process, the first electromagnetic moving body in the first electromagnetic excitation assembly rotates along with the first pick arm. During the rotation, the first electromagnetic moving body is energized to generate magnetism. The first electromagnetic fixed body disposed on the supporting box is energized to generate a force opposite to the rotation direction on the first electromagnetic moving body, and the first electromagnetic moving body drives the first tamping pick to generate an amplitude.

[0018] The second electromagnetic moving body in the second electromagnetic excitation assembly rotates along with the second pick arm. During the rotation, the second electromagnetic moving body is energized to generate magnetism. The second electromagnetic fixed body provided on the supporting box is energized to generate a force opposite to the rotation direction on the second electromagnetic moving body. The second electromagnetic moving body drives the second ramming pick to generate amplitude.

[0019] S50, the first tamping pick and the second tamping pick perform tamping operations from both sides of the sleeper respectively.

[0020] The electric-driven tamping device provided in the embodiment of the present application has a simple structure and is easy to operate. The opening and closing drive assembly has a telescopic function, driving the first pick arm and the second pick arm to drive the first tamping pick and the second tamping pick to perform tamping alternately. During the telescopic process, the opening and closing drive assembly drives the first tamping pick and the second tamping pick to rotate through the first pick arm and the second pick arm, thereby realizing the transmission of force between the first tamping pick and the second tamping pick to clamp the ballast horizontally, thereby realizing the tamping clamping function; the first pick arm and the second pick arm transmit vibration to the ballast through the first tamping pick and the second tamping pick, causing the ballast to move under the sleeper and achieve the purpose of compaction, effectively improving the tamping work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0022] Figure 1 A schematic diagram of the structure of an electric tamping device provided in the embodiment of the present application Figure 1 ;

[0023] Figure 2 A schematic diagram of the structure of an electric tamping device provided in the embodiment of the present application Figure 2 ;

[0024] Figure 3 A schematic diagram of the structure of an electric tamping device provided in the embodiment of the present application Figure 3 ;

[0025] Figure 4 A diagram showing the working principles of the first electromagnetic excitation component and the second electromagnetic excitation component provided in an embodiment of the present application;

[0026] In the figure: 10 is a supporting box, 20 is a first pick arm, 30 is a second pick arm, 40 is an opening and closing drive assembly, 50 is a first ramming pick, 60 is a second ramming pick, 70 is a first electromagnetic excitation assembly, 80 is a second electromagnetic excitation assembly, 90 is a vertical guide column, 701 is a first electromagnetic moving body, 702 is a first electromagnetic fixed body, 801 is a second electromagnetic moving body, 802 is a second electromagnetic fixed body, 7021 is a first electromagnetic block, and 8021 is a second electromagnetic block. DETAILED DESCRIPTION

[0027] In order to make the technical solutions and advantages of the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, and are not an exhaustive list of all the embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other unless they conflict.

[0028] In the process of realizing this application, the inventors found that providing an electric-driven tamping device, a tamping vehicle and a tamping method thereof with a simple structure, easy operation and the ability to realize amplitude control and frequency control is an effective measure to improve the maintenance effect of ballasted railway track beds.

[0029] This embodiment provides an electric tamping device that can be used on a tamping vehicle to tamp rail sleepers. The length of the tamping vehicle is the same as the direction of track extension. In this embodiment, the width of the tamping vehicle is referred to as the transverse direction, and the height of the tamping vehicle is referred to as the vertical direction.

[0030] Figure 1 A schematic diagram of the structure of an electric tamping device provided in the embodiment of the present application Figure 1 ,like Figure 1As shown, in response to the above problems, an embodiment of the present application provides an electric-driven tamping device, comprising: a support box 10 and at least one group of pick arm assemblies; each group of pick arm assemblies comprises a first pick arm 20 and a second pick arm 30, and the two sides of the support box 10 are hinged to the middle of the first pick arm 20 and the middle of the second pick arm 30 respectively; a first electromagnetic excitation assembly 70 is further provided between the support box 10 and the first pick arm 20; a second electromagnetic excitation assembly 80 is further provided between the support box 10 and the second pick arm 30; an opening and closing drive assembly 40 is hinged between the top of the support box 10 and the middle of the first pick arm 20 and the top of the second pick arm 30; a first tamping pick 50 is connected to the bottom of the first pick arm 20, and a second tamping pick 60 is connected to the bottom of the second pick arm 30, and the first tamping pick 50 and the second tamping pick 60 perform tamping operations from both sides of the sleeper respectively.

[0031] The electric-driven tamping device provided in the embodiment of the present application has a simple structure and is easy to operate. The opening and closing drive assembly has a telescopic function, driving the first pick arm and the second pick arm to drive the first tamping pick and the second tamping pick to perform tamping alternately. During the telescopic process, the opening and closing drive assembly drives the first tamping pick and the second tamping pick to rotate through the first pick arm and the second pick arm, thereby realizing the transmission of force between the first tamping pick and the second tamping pick to clamp the ballast horizontally, thereby realizing the tamping clamping function; the first pick arm and the second pick arm transmit vibration to the ballast through the first tamping pick and the second tamping pick, causing the ballast to move under the sleeper and achieve the purpose of compaction, effectively improving the tamping work efficiency.

[0032] Specifically, the same group of pick arm assemblies includes two opening and closing drive assemblies, both of which are hydraulic cylinders. The cylinder ends of the two hydraulic cylinders are hinged to the top of the support box, and the telescopic rod ends of the two hydraulic cylinders are hinged to the top of the first pick arm and the top of the second pick arm respectively. When the hydraulic cylinders move back and forth horizontally, there is no transmission gap in the hydraulic cylinders, and the movement is smooth. It can drive the first pick arm and the second pick arm to rotate smoothly, thereby improving the stability of the device.

[0033] Furthermore, the first electromagnetic excitation component 70 includes a first electromagnetic moving body 701 and a first electromagnetic fixed body 702; the first electromagnetic moving body 701 is arranged at the upper or lower part of the first pick arm 20, and the first electromagnetic fixed body 702 is arranged at a position on the support box 10 corresponding to the first electromagnetic moving body 701; the second electromagnetic excitation component 80 includes a second electromagnetic moving body 801 and a second electromagnetic fixed body 802; the second electromagnetic moving body 801 is arranged at the upper or lower part of the second pick arm 30, and the second electromagnetic fixed body 802 is arranged at a position on the support box 10 corresponding to the second electromagnetic moving body 801.

[0034] In the embodiment of the present application, the first electromagnetic excitation component includes a first electromagnetic moving body and a first electromagnetic fixed body, and the second electromagnetic excitation component includes a second electromagnetic moving body and a second electromagnetic fixed body. When the first electromagnetic excitation component and the second electromagnetic excitation component are energized, interaction forces are generated between the first electromagnetic moving body and the first electromagnetic fixed body, and between the second electromagnetic moving body and the second electromagnetic fixed body, thereby pushing the first pick arm and the second pick arm to rotate in the target direction and generating amplitude; energizing the first electromagnetic excitation component and the second electromagnetic excitation component at a certain frequency can achieve frequency control, so that the first pick arm and the second pick arm vibrate at a certain frequency, thereby realizing the vibration function of the first tamping pick and the second tamping pick, and it has the advantage of fast response; amplitude control can be achieved by adjusting the current intensity of the power supply, which is easy to adjust and can achieve stepless adjustment; in addition, the first electromagnetic moving body, the first electromagnetic fixed body, the second electromagnetic moving body, and the second electromagnetic fixed body are inexpensive, which can effectively reduce production costs.

[0035] Figure 2 A schematic diagram of the structure of an electric tamping device provided in the embodiment of the present application Figure 2 ,like Figure 2 As shown, further, the first electromagnetic fixed body 702 is a fan-shaped ring structure composed of multiple first electromagnetic blocks 7021 uniformly distributed along the movement direction of the first electromagnetic moving body 701, so that when the first pick arm rotates to any position, there are corresponding first electromagnetic blocks on both sides of it to apply force to it and generate amplitude; the magnetism of the first electromagnetic block 7021 arranged on one side of the first electromagnetic moving body 701 is the same as the magnetism of the first electromagnetic moving body 701; the magnetism of the first electromagnetic block 7021 arranged on the other side of the first electromagnetic moving body 701 is opposite to the magnetism of the first electromagnetic moving body 701. According to the target rotation direction of the first pick arm, the multiple first electromagnetic blocks are energized, so that the first electromagnetic block in front of the target direction generates a force that attracts the first electromagnetic moving body, and the first electromagnetic block behind the target direction generates a force that repels the first electromagnetic moving body, thereby pushing the first pick arm to rotate toward the target direction.

[0036] Furthermore, the second electromagnetic fixed body 802 is a fan-shaped ring structure composed of multiple second electromagnetic blocks 8021 evenly distributed along the movement direction of the second electromagnetic moving body 801, so that when the second pick arm rotates to any position, there are corresponding second electromagnetic blocks on its left and right sides to apply force to it and generate amplitude; the magnetism of the second electromagnetic block 8021 arranged on one side of the second electromagnetic moving body 801 is the same as that of the second electromagnetic moving body 801; the magnetism of the second electromagnetic block 8021 arranged on the other side of the second electromagnetic moving body 801 is opposite to that of the second electromagnetic moving body 801. According to the target rotation direction of the second pick arm, the multiple second electromagnetic blocks are energized, so that the second electromagnetic block in front of the target direction generates an attractive force with the second electromagnetic moving body, and the second electromagnetic block behind the target direction generates a repulsive force with the second electromagnetic moving body, thereby pushing the second pick arm to rotate toward the target direction.

[0037] Figure 3 A schematic diagram of the structure of an electric tamping device provided in the embodiment of the present application Figure 3 ,like Figure 3 As shown, further, an elastic component is provided between the top of the support box 10 and the opening and closing drive component 40, and the deformation of the elastic component can adapt to the amplitude generated when the first pick arm and the second pick arm rotate; one end of the elastic component is hinged to the top of the support box 10 through a hinge, and the other end of the elastic component is connected to the cylinder end of the opening and closing drive component 40.

[0038] Specifically, the elastic component is a spring or rubber. By matching the elastic component with appropriate stiffness, the force generated by the first electromagnetic moving body and the first electromagnetic fixed body when energized, and the force generated by the second electromagnetic moving body and the second electromagnetic fixed body when energized can be within a reasonable range, making it easier to adapt to the amplitude generated when the first pick arm and the second pick arm rotate.

[0039] Furthermore, the electric tamping device also includes a control component, and sensors are provided on the first pick arm 20 and the second pick arm 30; the control component is electrically connected to the two opening and closing drive components 40, the first electromagnetic moving body 701, the first electromagnetic block 7021, the second electromagnetic moving body 801, the second electromagnetic block 8021, and the sensors.

[0040] Through the control component, the opening and closing drive component is controlled to control the first electromagnetic moving body, the first electromagnetic fixed body, the second electromagnetic moving body and the second electromagnetic fixed body, driving the first pick arm and the second pick arm to rotate, and then driving the first tamping pick and the second tamping pick to rotate, realizing the clamping and excitation functions of the first tamping pick and the second tamping pick.

[0041] Specifically, the sensor is an angle sensor or a displacement sensor, through which the positions of the first pickaxe arm and the second pickaxe arm can be judged in real time, thereby obtaining the frequency and amplitude information of the first pickaxe arm and the second pickaxe arm, and transmitting the frequency and amplitude information to the control component to realize closed-loop control, thereby achieving the purpose of precise control of the frequency and amplitude.

[0042] The present application also provides a tamping vehicle, including a tamping vehicle body and an electric tamping device, the electric tamping device being an electric tamping device provided by any of the above contents; at least one vertical guide column 90 is connected to the tamping vehicle body, the bottom of the vertical guide column 90 passes through the support box 10, and a vertical oil cylinder is arranged between the support box 10 and the vertical guide column 90.

[0043] The support box of the embodiment of the present application can slide up and down along the vertical guide column, thereby driving the first tamping pick and the second tamping pick to slide up and down. When the support box slides downward along the vertical guide column, the first tamping pick and the second tamping pick can be inserted and compacted on the ballast. In addition, the electric-driven tamping device provided in the present application has the same technical effect as the above-mentioned electric-driven tamping device, and can effectively improve the tamping efficiency of the tamping vehicle.

[0044] The present application also provides a tamping method using a tamping vehicle, comprising the following steps:

[0045] S10: The tamping vehicle moves to the area where tamping is required, and drives the vertical oil cylinder to drive the support box 10 to move downward along the vertical guide column 90, and the support box 10 drives the electric tamping device to move downward as a whole;

[0046] S20, the electrically driven tamping device moves downward until the first tamping pick 50 and the second tamping pick 60 are inserted into the ballast below the sleeper;

[0047] S30, the two opening and closing drive assemblies 40 drive the first pick arm 20 and the second pick arm 30 respectively to drive the first tamping pick 50 and the second tamping pick 60 to perform tamping alternately;

[0048] S40, during the alternating tamping process, the first electromagnetic moving body 701 in the first electromagnetic excitation assembly 70 rotates along with the first pick arm 20. During the rotation, the first electromagnetic moving body 701 is energized to generate magnetism. The first electromagnetic fixed body 702 disposed on the supporting box 10 is energized to generate a force opposite to the rotation direction on the first electromagnetic moving body 701. The first electromagnetic moving body 701 drives the first tamping pick 50 to generate an amplitude.

[0049] The second electromagnetic moving body 801 in the second electromagnetic excitation assembly 80 rotates along with the second pick arm 30. During the rotation, the second electromagnetic moving body 801 is energized to generate magnetism. The second electromagnetic fixed body 802 provided on the supporting box 10 is energized to generate a force opposite to the rotation direction on the second electromagnetic moving body 801. The second electromagnetic moving body 801 drives the second ramming pick 60 to generate an amplitude.

[0050] S50 , the first tamping pick 50 and the second tamping pick 60 perform tamping operations from both sides of the sleeper respectively.

[0051] The tamping method provided in this application is simple to operate and easy to use. The appropriate amplitude and frequency can be adjusted according to different roadbed conditions, effectively improving the tamping work efficiency.

[0052] Figure 4 The working principle diagram of the first electromagnetic excitation component and the second electromagnetic excitation component provided in the embodiment of the present application is as follows: Figure 4 As shown, the left side is a working principle diagram of the first electromagnetic moving body and the first electromagnetic fixed body of the first pickaxe arm, and the right side is a working principle diagram of the second electromagnetic moving body and the second electromagnetic fixed body of the second pickaxe arm. The specific working principles are as follows:

[0053] Taking the first pick arm as an example, during the process of alternating tamping by the first tamping pick and the second tamping pick, the first electromagnetic moving body in the first electromagnetic excitation assembly rotates with the first pick arm. During the rotation, the first electromagnetic moving body is energized to change its magnetic pole to the north pole. When the first pick arm needs to rotate clockwise to generate amplitude, the multiple first electromagnetic blocks located to the left of the first electromagnetic moving body are energized to change their magnetic pole to the south pole, and the multiple first electromagnetic blocks located to the right of the first electromagnetic moving body are energized to change their magnetic pole to the north pole. At this time, under the action of the electromagnetic force, the first pick arm rotates slightly to the left, and then, under the push of the opening and closing drive assembly, the first pick arm enters the next position. According to the same principle, when the first pick arm needs to rotate counterclockwise to generate amplitude, the multiple first electromagnetic blocks located to the left of the first electromagnetic moving body are energized to change their magnetic pole to the north pole, and the multiple first electromagnetic blocks located to the right of the first electromagnetic moving body are energized to change their magnetic pole to the south pole. At this time, under the action of the electromagnetic force, the first pick arm rotates slightly to the right, and then, under the action of the opening and closing drive assembly, the first pick arm enters the next position.

[0054] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0056] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0057] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0058] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. An electric tamping device, characterized in that: include: A support box (10) and at least one set of pick arm assemblies; each set of the pick arm assemblies comprises a first pick arm (20) and a second pick arm (30), and both sides of the support box (10) are hinged to the middle of the first pick arm (20) and the middle of the second pick arm (30), respectively; A first electromagnetic excitation component (70) is further provided between the support box (10) and the first pick arm (20); a second electromagnetic excitation component (80) is further provided between the support box (10) and the second pick arm (30); An opening and closing drive assembly (40) is hingedly connected between the middle of the support box (10), the top of the first pickaxe arm (20), and the top of the second pickaxe arm (30); A first tamping pick (50) is connected below the first pick arm (20), and a second tamping pick (60) is connected below the second pick arm (30), wherein the first tamping pick (50) and the second tamping pick (60) respectively perform tamping operations from both sides of the sleeper; The first electromagnetic excitation component (70) comprises a first electromagnetic moving body (701) and a first electromagnetic fixed body (702); the first electromagnetic moving body (701) is arranged at the upper part or the lower part of the first pickaxe arm (20), and the first electromagnetic fixed body (702) is arranged at a position on the supporting box (10) corresponding to the first electromagnetic moving body (701); The second electromagnetic excitation component (80) includes a second electromagnetic moving body (801) and a second electromagnetic fixed body (802); the second electromagnetic moving body (801) is arranged at the upper part or the lower part of the second pickaxe arm (30), and the second electromagnetic fixed body (802) is arranged at a position on the supporting box (10) corresponding to the second electromagnetic moving body (801); The first electromagnetic fixed body (702) is a fan-shaped ring structure composed of a plurality of first electromagnetic blocks (7021) evenly distributed along the moving direction of the first electromagnetic moving body (701); The magnetic properties of the first electromagnetic block (7021) arranged on one side of the first electromagnetic moving body (701) are the same as the magnetic properties of the first electromagnetic moving body (701); The magnetism of the first electromagnetic block (7021) arranged on the other side of the first electromagnetic moving body (701) is opposite to that of the first electromagnetic moving body (701); The second electromagnetic fixed body (802) is a fan-shaped ring structure composed of a plurality of second electromagnetic blocks (8021) evenly distributed along the moving direction of the second electromagnetic moving body (801); The magnetic properties of the second electromagnetic block (8021) arranged on one side of the second electromagnetic moving body (801) are the same as the magnetic properties of the second electromagnetic moving body (801); The magnetism of the second electromagnetic block (8021) arranged on the other side of the second electromagnetic moving body (801) is opposite to the magnetism of the second electromagnetic moving body (801).

2. The electric tamping device according to claim 1, characterized in that: An elastic component is provided between the support box (10) and the opening and closing drive component (40); One end of the elastic component is hinged to the top of the support box (10) via a hinge, and the other end of the elastic component is connected to the cylinder end of the opening and closing drive component (40).

3. The electric tamping device according to claim 1, characterized in that: The electric-driven tamping device further comprises a control component, and sensors are provided on both the first pickaxe arm (20) and the second pickaxe arm (30); The control component is electrically connected to the two opening and closing drive components (40), the first electromagnetic moving body (701), the first electromagnetic block (7021), the second electromagnetic moving body (801), the second electromagnetic block (8021), and the sensor.

4. A tamping vehicle, characterized in that: It comprises a tamping vehicle body and an electric tamping device, wherein the electric tamping device is the electric tamping device according to any one of claims 1 to 3; At least one vertical guide column (90) is connected to the tamping vehicle body, the bottom of the vertical guide column (90) passes through the support box (10), and a vertical oil cylinder is provided between the support box (10) and the vertical guide column (90).

5. A tamping method using the tamping vehicle according to claim 4, characterized in that: The following steps are involved: S10, the tamping vehicle moves to the area where the tamping operation needs to be performed, drives the vertical oil cylinder to drive the support box (10) to move downward along the vertical guide column (90), and the support box (10) drives the electric tamping device to move downward as a whole; S20, the electrically driven tamping device moves downward until the first tamping pick (50) and the second tamping pick (60) are inserted into the ballast below the sleeper; S30, the opening and closing drive assembly (40) drives the first pickaxe arm (20) and the second pickaxe arm (30) respectively to drive the first tamping pickaxe (50) and the second tamping pickaxe (60) to perform tamping alternately; S40, during the alternating tamping process, the first electromagnetic moving body (701) in the first electromagnetic excitation assembly (70) rotates along with the first pick arm (20), and during the rotation, the first electromagnetic moving body (701) is energized to generate magnetism, and the first electromagnetic fixed body (702) provided on the supporting box (10) is energized to generate a force opposite to the rotation direction on the first electromagnetic moving body (701), and the first electromagnetic moving body (701) drives the first tamping pick (50) to generate an amplitude; The second electromagnetic moving body (801) in the second electromagnetic excitation component (80) rotates along with the second pick arm (30). During the rotation, the second electromagnetic moving body (801) is energized to generate magnetism. The second electromagnetic fixed body (802) provided on the supporting box (10) is energized to generate a force opposite to the rotation direction on the second electromagnetic moving body (801). The second electromagnetic moving body (801) drives the second tamping pick (60) to generate an amplitude. S50, the first tamping pick (50) and the second tamping pick (60) perform tamping operations from both sides of the sleeper respectively.

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