Platform moving type electromagnetic tamping machine

Abstract

The invention discloses a platform moving type electromagnetic tamping machine, and relates to the field of coke oven tamping equipment, the platform moving type electromagnetic tamping machine comprises a rack main platform, at least one hammer rod vertically slides in a tamping channel in the middle of the rack main platform, and a driven electromagnetic coil is fixedly connected to a hammer rod body; a movable platform is connected to the upper portion of the machine frame main platform in a lifting mode, an upper-layer driving electromagnetic coil set and a lower-layer driving electromagnetic coil set are fixedly connected to the upper portion and the lower portion of the movable platform respectively, and the upper-layer driving electromagnetic coil set comprises a first upper-layer driving electromagnetic coil and a second upper-layer driving electromagnetic coil which are located on the two sides of the hammer rod and matched with the driven electromagnetic coil. The lower-layer driving electromagnetic coil set comprises a first lower-layer driving electromagnetic coil and a second lower-layer driving electromagnetic coil which are located on the two sides of the hammer rod and matched with the driven electromagnetic coil. According to the tamping machine, only one set of electromagnetic coils is installed on each hammer rod, only one or two sets of electromagnetic coils need to be installed on the moving platform, different working modes can be supported, variable tamping impact and tamping frequency can be provided, and the tamping machine is suitable for different working conditions.

Description

Technical Field

[0001] The invention relates to the field of coke oven tamping equipment, in particular to a platform-mobile electromagnetic tamping machine. Background Art

[0002] Existing coking coal tamping machines generally use a motor that directly drives the camshaft after deceleration. This design has some defects. First, the efficiency of the cam is not high, resulting in low overall mechanical efficiency. Secondly, the tamping hammer tamps by falling under its own weight, which not only limits the tamping efficiency, but also increases the mass of the tamping hammer, further reducing the mechanical efficiency of the equipment. In addition, the cam will be subjected to a large instantaneous impact when the clamping hammer rod is lifted. This impact will cause a large load on the gears and camshafts, especially when the number of tamping hammer rods increases. The cam loads in the same phase will be superimposed, which can easily lead to fatigue damage to the camshaft and gears.

[0003] Electromagnetic tamping machines are another option, but they also have some problems. One design of an electromagnetic tamping machine is to fix multiple electromagnetic coils on the frame, and another set or two sets of electromagnetic coils are fixed on the hammer rod. This design is not only extremely expensive, but also has low working efficiency of the electromagnetic coils. During the tamping process, the electromagnetic coils far away from the hammer rod are not working, resulting in a large number of electromagnetic coils on the frame that increases the load on the frame itself. Another design is to install multiple sets of electromagnetic coils on the hammer rod, and one or two sets of electromagnetic coils on the frame. This design also has the problem of high cost, and because there are more electromagnetic coils on the hammer rod, it is also more difficult to maintain.

[0004] In order to improve tamping efficiency and reduce costs, it is necessary to develop a tamping machine that can reduce the number of electromagnetic coils. Summary of the invention

[0005] The purpose of the present invention is to provide a platform-mobile electromagnetic tamping machine, which reduces the number of unnecessary electromagnetic coils through a more efficient layout of electromagnetic coils, thereby reducing costs and maintenance difficulties.

[0006] To achieve the above object, the present invention provides the following technical solution: a platform-mobile electromagnetic tamping machine, comprising: A main frame platform, wherein a tamping passage is provided in the middle of the main frame platform and passes through the upper and lower parts; A hammer rod, at least one of which reciprocates up and down in the tamping channel, a hammer head is fixedly connected to the bottom of the hammer rod, and a driven electromagnetic coil is fixedly connected to the rod body of the hammer rod; The mobile platform is supported above the main platform of the frame in an adjustable height through a lifting mechanism; an upper active electromagnetic coil group and a lower active electromagnetic coil group are respectively fixed above and below the mobile platform, the upper active electromagnetic coil group includes an upper active electromagnetic coil 1 and an upper active electromagnetic coil 2 located on both sides of the hammer rod and cooperating with the driven electromagnetic coil, and the lower active electromagnetic coil group includes a lower active electromagnetic coil 1 and a lower active electromagnetic coil 2 located on both sides of the hammer rod and cooperating with the driven electromagnetic coil.

[0007] Optionally, the driven electromagnetic coil includes a driven electromagnetic coil 1 and a driven electromagnetic coil 2 fixedly connected to both sides of the hammer rod.

[0008] Optionally, the hammer rod is an I-beam, and supporting I-frames are threadedly installed in steel grooves on both sides of the hammer rod, and the driven electromagnetic coil 1 and the driven electromagnetic coil 2 are respectively fixedly connected to the two supporting I-frames.

[0009] Optionally, the main platform of the frame includes an upper frame and a lower frame fixed as one, and tamping channels are respectively opened on the upper frame and the lower frame, and the upper surface of the upper frame and the lower surface of the lower frame are fixed with guide structures that form limits around the hammer rod.

[0010] Optionally, the guide structure is a plurality of guide wheels that roll with the side surface of the hammer rod.

[0011] Optionally, the lifting mechanism includes a plurality of hydraulic cylinders evenly distributed at the bottom of the mobile platform, and a power system for driving the hydraulic cylinders to move synchronously.

[0012] Optionally, the power system includes a motor, a coupling, an oil pump, an electromagnetic reversing valve connected in sequence, and an oil pipe connecting the electromagnetic reversing valve and each of the hydraulic cylinders.

[0013] Optionally, the platform-mobile electromagnetic tamping machine also includes a limiter, which is detachably connected to a position of the hammer rod near the top, and when the hammer rod descends to a predetermined position, the limiter abuts against the upper surface of the mobile platform.

[0014] Optionally, two hammer rods slide side by side in the tamping channel, and the two hammer rods are independently controlled to complete the tamping action synchronously or alternately.

[0015] Optionally, a rack lower frame extending downward is connected to the bottom of the rack main platform.

[0016] Compared with the prior art, the present invention at least discloses the following beneficial effects: In the present invention, only one set of electromagnetic coils is installed on each hammer rod of the tamping machine, and only one or two sets of electromagnetic coils need to be installed on the mobile platform, which can not only support different modes, but also provide variable tamping impact and tamping frequency to adapt to different working conditions. At the same time, due to the reduction of electromagnetic coils, the cost of the equipment will be greatly reduced, and after removing multiple sets of inefficient inductive coils, a large amount of energy consumption generated during the operation of the equipment can be reduced, and the carbon emissions of the entire equipment during operation can be improved. Compared with the prior art, the platform-mobile electromagnetic tamping machine using the present invention has the advantages of low cost, multi-function, high efficiency, strong adaptability, and low emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the structure of an embodiment of the present invention; Figure 2 for Figure 1 Sectional view at AA in the middle; Figure 3 for Figure 2 Enlarged view of the midsection; Figure 4 It is an axonometric view of the platform frame in the embodiment of the present invention; Figure 5 A top view of a platform frame in an embodiment of the present invention; Figure 6 It is a right side view of the platform frame in the embodiment of the present invention; Figure 7 It is a rear view of the platform frame in the embodiment of the present invention; Figure 8 This is an axonometric diagram of the platform frame in the embodiment of the present invention after removing the mobile platform; Fig. 9 This is a bottom isometric view of the platform frame in the embodiment of the present invention after removing the mobile platform; Fig.10 An axonometric view of a hammer rod in an embodiment of the present invention; Fig.11 It is a partial enlarged view of the position where the electromagnetic coil is installed on the hammer rod in the embodiment of the present invention; Fig.12 A top view of a hammer rod according to an embodiment of the present invention; Fig.13 This is a maximum impact working timing diagram of an embodiment of the present invention; Fig.144 is a high frequency operation timing diagram of an embodiment of the present invention.

[0019] In the figure: 1, hammer rod; 101, driven electromagnetic coil 1; 102, driven electromagnetic coil 2; 103, support I-beam; 104, hammer head; 2, mobile platform; 3, lifting mechanism; 4, main platform of the rack; 401, upper rack; 402, lower rack; 403, tamping channel; 5, motor; 6, lower frame of the rack; 7, guide structure; 701, guide wheel 1; 702, guide wheel 2; 703, guide wheel 3; 704, guide wheel 4; 8, fixed electromagnetic coil bracket; 801, upper active electromagnetic coil 1; 802, upper active electromagnetic coil 2; 803, lower active electromagnetic coil 1; 804, lower active electromagnetic coil 2; 9, limiter; 10, coupling; 11, oil pump; 111, oil pump oil inlet pipe; 112, oil pump oil outlet pipe; 113, oil distribution pipe 1; 114, oil distribution pipe 2; 12, electromagnetic reversing valve. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Reference Figures 1 to 12As shown, an embodiment of the present invention provides a platform-mobile electromagnetic tamping machine, including a platform frame, the platform frame is formed by connecting a frame main platform 4, a mobile platform 2 and a frame lower frame 6, the frame lower frame 6 is welded or threaded with the frame main platform 4 to form an integral body, and the mobile platform 2 is movably connected to the top of the frame main platform 4 through a jacking mechanism 3. The frame main platform 4 is welded by a plurality of channel steels, I-beams and steel plates, the frame main platform 4 is symmetrically designed and includes a plurality of beam structures, a tamping channel 403 that runs through the upper and lower parts is opened in the middle of the frame main platform 4, at least one hammer rod 1 reciprocates up and down in the tamping channel 403, the hammer rod 1 is used as an actuator for the tamping action, a hammer head 104 is fixedly connected to the bottom end, and a driven electromagnetic coil is fixedly connected to the rod body of the hammer rod 1. The mobile platform 2 is welded by I-beams and channel steels to form a square structure. Two fixed electromagnetic coil brackets 8 are fixedly installed on the upper surface with the central axis of the tamping channel 403 as the symmetry axis, and are symmetrically facing each other; each fixed electromagnetic coil bracket 8 is installed with an upper active electromagnetic coil, which are an upper active electromagnetic coil 1 801 and an upper active electromagnetic coil 2 802, and the two upper active electromagnetic coils form a group, i.e., an upper active electromagnetic coil group; similarly, two fixed electromagnetic coil brackets 8 are fixedly installed on the lower surface of the mobile platform 2 with the central axis of the tamping channel 403 as the symmetry axis; each fixed electromagnetic coil bracket 8 is installed with a lower active electromagnetic coil, which are a lower active electromagnetic coil 1 803 and a lower active electromagnetic coil 2 804, and the two lower active electromagnetic coils form a group, i.e., a lower active electromagnetic coil group; the two groups of active electromagnetic coils cooperate with the driven electromagnetic coil to realize electromagnetic drive, thereby completing the upward and downward driving of the hammer rod 1.

[0023] In the platform-mobile electromagnetic tamping machine of the above structure, the mobile platform 2 can be raised and lowered relative to the main platform 4 of the frame to meet the actual operating requirements of the gradual increase of coal cakes during the tamping operation. As coal materials are continuously added, the height of the coal cakes formed by tamping also continues to increase. By arranging the mobile platform 2 and the lifting mechanism 3 to adapt to the change in the height of the coal cakes, the distance between the hammer head 104 and the coal cakes will not decrease as the height of the coal cakes increases, thereby ensuring the tamping quality and improving work efficiency.

[0024] In a possible embodiment, Figure 4 As shown, the fixed electromagnetic coil bracket 8 is welded by bending sheet metal and four reinforcing ribs, and the fixed electromagnetic coil bracket 8 is connected with the I-beam bolts at the front and rear of the mobile platform 2. The two fixed electromagnetic coil brackets 8 are spaced apart in the left and right directions, and the hammer rod 1 is located between the two. In addition, two sets of driven electromagnetic coils are installed on the hammer rod 1, namely, the driven electromagnetic coil 1 101 and the driven electromagnetic coil 2 102. The driven electromagnetic coil 1 101 and the driven electromagnetic coil 2 102 correspond to the upper active electromagnetic coil 1 801 and the upper active electromagnetic coil 2 802, respectively.

[0025] In a possible embodiment, two hammer rods 1 are provided, and the two hammer rods 1 are spaced apart in the front-to-back direction. Accordingly, two active electromagnetic coils are spaced apart in the front-to-back direction on each fixed electromagnetic coil bracket 8. The movement of the two hammer rods 1 is controlled respectively by two sets of driven electromagnetic coils, that is, an independent driven electromagnetic coil is correspondingly installed on each hammer rod 1, and cooperates with the active electromagnetic coils (upper active electromagnetic coil 1 801, upper active electromagnetic coil 2 802, lower active electromagnetic coil 1 803 and lower active electromagnetic coil 2 804) on the fixed electromagnetic coil bracket 8 to realize independent control of the two hammer rods 1. The two hammer rods 1 can realize synchronous operation or alternating operation. The two cooperate to perform tamping operation, which can improve work efficiency.

[0026] In a possible embodiment, the structure of the hammer rod 1 can be an I-beam, that is, there are steel grooves on both sides of the hammer rod 1, and a supporting I-beam frame 103 is installed in the steel groove by bolts, such as Fig.10 and Fig.11 As shown, the supporting I-beam 103 is a small-sized I-beam, and the supporting I-beam 103 serves as a support on which the driven electromagnetic coil is installed.

[0027] In a possible embodiment, the main frame platform 4 includes an upper frame 401 and a lower frame 402 fixedly connected as one body, and upper and lower tamping channels 403 corresponding to each other are respectively opened on the upper frame 401 and the lower frame 402, and the upper surface of the upper frame 401 and the lower surface of the lower frame 402 are fixedly connected with a guide structure 7 that forms a limit from all sides of the hammer rod 1. The upper frame 401 is welded by a plurality of plates and steel sections, and is symmetrical on both sides, and a plate is set in the middle part to support the jacking mechanism 3 and the power system.

[0028] In a possible embodiment, the guide structure 7 includes a plurality of guide wheels that roll with the side surfaces of the hammer rod 1. Figures 4 to 9 As shown, multiple guide wheels are threadedly fixed on the upper frame 401 of the main frame platform 4, and the multiple guide wheels are respectively around the hammer rod 1 to limit the hammer rod 1, and the guide wheels are in rolling contact with the rod body of the hammer rod 1, including two guide wheels 1 701 located on the front and rear sides of the hammer rod 1 and two guide wheels 2 702 located on the left and right sides of the hammer rod 1. The two guide wheels 1 701 cooperate with each other to limit the hammer rod 1 between the two, so that its position in the front and rear directions remains stable, and the two guide wheels 2 702 cooperate with each other to limit the hammer rod 1 between the two, so that its position in the left and right directions remains stable. When the hammer rod 1 goes up or down, each guide wheel rotates freely, and the resistance generated can be ignored. Correspondingly, under the lower frame 402, two guide wheels 3 703 and two guide wheels 4 704 are threadedly fixed in the same way. Through the cooperation of the upper and lower guide wheels, it can be ensured that the hammer rod 1 moves linearly back and forth in the vertical direction without deviation.

[0029] In a possible embodiment, the lifting mechanism 3 includes a plurality of hydraulic cylinders evenly distributed on the upper frame 401, preferably four hydraulic cylinders distributed at four corners, the upper ends of the hydraulic rods of the hydraulic cylinders are fixed to the bottom of the mobile platform 2, and the four hydraulic cylinders are connected to a power system, which drives the four hydraulic cylinders to move synchronously.

[0030] In a possible embodiment, the power system is arranged on the upper frame 401 of the frame main platform 4, and includes a motor 5, a coupling 10, an oil pump 11, an electromagnetic reversing valve 12, and an oil pipe connecting the electromagnetic reversing valve 12 and each of the hydraulic cylinders. Specifically, the motor 5 is connected to the oil pump 11 through the coupling 10, and the oil pump 11 is connected to the electromagnetic reversing valve 12 through the oil pump inlet pipe 111 and the oil pump outlet pipe 112. The electromagnetic reversing valve 12 is connected to four hydraulic cylinders through the oil distribution pipe 1 113 and the oil distribution pipe 2 114. The connection method of the oil distribution pipe 1 113 and the oil distribution pipe 2 114 is the same as that of the four hydraulic cylinders. The hydraulic cylinders are fixedly connected to the four corners above the frame main platform 4, and their hydraulic rod supports are connected to the mobile platform 2. The four hydraulic cylinders operate synchronously and extend and retract at the same speed.

[0031] In a possible embodiment, it also includes a limiter 9 installed on the hammer rod 1, and the limiter 9 is detachably connected to a position near the top of the hammer rod 1. When the hammer rod 1 descends to a predetermined position, the limiter 9 abuts against the upper surface of the mobile platform 2.

[0032] In a possible embodiment, a frame lower frame 6 extending downward is connected to the bottom of the frame main platform 4, and the frame lower frame 6 can support the entire platform frame and provide a fulcrum for fixing the entire tamping machine. It should be understood that a guide wheel can be provided between the frame lower frame 6 and the hammer rod 1 to provide guidance for the upward and downward movement of the hammer rod 1.

[0033] It should be understood that, in practical applications, the lifting mechanism 3 may also be other driving structures or mechanical devices capable of realizing linear motion functions / rotational motion / telescopic motion, for example, a servo motor, a telescopic motor, an electric cylinder, and the like.

[0034] In some embodiments, the hammer rod 1 may also include a sensor, which is electrically connected to the controller. The controller is configured to control the driving mechanism based on a power-off signal recognized by the sensor to disconnect the active electromagnetic coil from the external power supply.

[0035] It can be understood that the sensor may include a speed sensor, an acceleration sensor, a stroke sensor, etc. The sensor is electrically connected to the controller and can monitor the power-off signal. For example, when the hammer rod 1 is installed with a stroke sensor, the stroke sensor and the controller are electrically connected. When the stroke value of the hammer rod 1 sent by the stroke sensor to the controller is greater than a preset threshold, the stroke value is the power-off signal. At this time, the controller controls one or two groups of active electromagnetic coils to disconnect from the external power supply to automatically disconnect the driving power. By setting the sensor, the monitoring of the movement of the hammer rod 1 can be made more accurate and efficient.

[0036] The working principle of the platform mobile electromagnetic tamping machine of the embodiment of the present invention is as follows: Before working, the hydraulic cylinder is in a state of minimum extension, the mobile platform 2 is at the lowest height, the limiter 9 of the hammer rod 1 is in contact with the mobile platform 2 to support the hammer rod 1, and all electromagnetic coils are not energized.

[0037] During operation, each active electromagnetic coil is energized with the driven electromagnetic coil, wherein the N poles of the driven electromagnetic coil 101 and the driven electromagnetic coil 2 102 face upwards, and the S poles of the upper active electromagnetic coil 1 801 and the upper active electromagnetic coil 2 802 face downwards, generating an upward magnetic force to lift the hammer rod 1 upwards.

[0038] If a larger tamping impact is required, the active electromagnetic coil provides maximum power output throughout the entire process. When the height of the driven electromagnetic coil 101 and the driven electromagnetic coil 2 102 exceeds the upper active electromagnetic coil 1 801 and the upper active electromagnetic coil 2 802, the upper active electromagnetic coil 1 801 and the upper active electromagnetic coil 2 802 change the direction of the magnetic poles to provide an upward magnetic force for the hammer rod 1. The hammer rod 1 will then obtain the maximum potential energy that the equipment can provide. When falling, the magnetic pole direction of the active electromagnetic coil that is lower than the driven electromagnetic coil is the same as that of the driven electromagnetic coil, providing a downward suction force; the magnetic pole direction of the active electromagnetic coil that is higher than the driven electromagnetic coil is opposite to that of the driven electromagnetic coil, providing a downward thrust, and the hammer rod 1 reaches the lowest point to tamp the coal cake. Fig.13 As shown, this working process can obtain the maximum tamping impact that the equipment can provide.

[0039] If a higher tamping frequency is required, the active electromagnetic coil provides partial power output, and the highest points of the driven electromagnetic coil 101 and the driven electromagnetic coil 2 102 are at the same height as the upper active electromagnetic coil. When falling, the magnetic pole direction of the active electromagnetic coil whose height is lower than the driven electromagnetic coil is the same as that of the driven electromagnetic coil, providing downward suction; the magnetic pole direction of the active electromagnetic coil whose height is higher than the driven electromagnetic coil is opposite to that of the driven electromagnetic coil, providing downward thrust, and the hammer rod 1 reaches the lowest point to tamp the coal cake. Fig.14 As shown, since the tamping stroke of the hammer rod 1 is shortened, the tamping cycle is shortened, and a higher tamping frequency can be obtained.

[0040] As the tamping progresses, the height of the coal cake increases, the motor 5 rotates to drive the oil pump 11 to pump oil, and the hydraulic cylinder lifts the mobile platform 2 to adapt to the height of the coal cake. After the tamping is completed, while the coal cake is transported away, each active electromagnetic coil provides magnetic force to suspend the hammer rod 1 in the working area, and the motor 5 reverses to lower the height of the mobile platform 2. After the coal cake is transported, the magnetic force slowly decreases, the hammer rod 1 slowly descends, and the limiter 9 supports the hammer rod 1 to complete the operation.

[0041] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, 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 should not be understood as a limitation on the present invention.

[0042] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A platform-mobile electromagnetic tamping machine, characterized in that: include: A main frame platform (4), wherein a tamping passage (403) is formed in the middle of the main frame platform (4) and passes through the upper and lower parts; A hammer rod (1), at least one of the hammer rods (1) slides reciprocatingly up and down in the tamping channel (403), a hammer head (104) is fixedly connected to the bottom of the hammer rod (1), and a driven electromagnetic coil is fixedly connected to the rod body of the hammer rod (1); A mobile platform (2) is supported above the main platform (4) of the frame in an adjustable height through a lifting mechanism (3); an upper active electromagnetic coil group and a lower active electromagnetic coil group are respectively fixed above and below the mobile platform (2); the upper active electromagnetic coil group comprises an upper active electromagnetic coil 1 (801) and an upper active electromagnetic coil 2 (802) located on both sides of the hammer rod (1) and cooperating with the driven electromagnetic coil; the lower active electromagnetic coil group comprises a lower active electromagnetic coil 1 (803) and a lower active electromagnetic coil 2 (804) located on both sides of the hammer rod (1) and cooperating with the driven electromagnetic coil.

2. The platform-mobile electromagnetic tamping machine according to claim 1, characterized in that: The driven electromagnetic coil comprises a driven electromagnetic coil 1 (101) and a driven electromagnetic coil 2 (102) fixedly connected to both sides of the hammer rod (1).

3. The platform-mobile electromagnetic tamping machine according to claim 2, characterized in that: The hammer rod (1) is an I-beam, and support I-beam frames (103) are respectively threadedly installed in steel grooves on both sides of the hammer rod (1), and the driven electromagnetic coil 1 (101) and the driven electromagnetic coil 2 (102) are respectively fixedly connected to the two support I-beam frames (103).

4. The platform-mobile electromagnetic tamping machine according to claim 1, characterized in that: The main frame platform (4) comprises an upper frame (401) and a lower frame (402) fixedly connected as one body, wherein a tamping channel (403) is respectively provided on the upper frame (401) and the lower frame (402), and a guide structure (7) is fixedly connected to the upper surface of the upper frame (401) and the lower surface of the lower frame (402) to form a limit from all sides of the hammer rod (1).

5. The platform-mobile electromagnetic tamping machine according to claim 4, characterized in that: The guide structure (7) is a plurality of guide wheels that are in rolling engagement with the side surface of the hammer rod (1).

6. The platform-mobile electromagnetic tamping machine according to claim 1, characterized in that: The lifting mechanism (3) comprises a plurality of hydraulic cylinders evenly distributed at the bottom of the mobile platform (2), and a power system for driving the hydraulic cylinders to move synchronously.

7. The platform-mobile electromagnetic tamping machine according to claim 6, characterized in that: The power system comprises a motor (5), a coupling (10), an oil pump (11), an electromagnetic reversing valve (12) connected in sequence, and an oil pipe connecting the electromagnetic reversing valve (12) and each of the hydraulic cylinders.

8. The platform-mobile electromagnetic tamping machine according to claim 1, characterized in that: It also includes a stopper (9), which is detachably connected to a position near the top of the hammer rod (1). When the hammer rod (1) descends to a predetermined position, the stopper (9) abuts against the upper surface of the mobile platform (2).

9. The platform-mobile electromagnetic tamping machine according to claim 1, characterized in that: Two hammer rods (1) are arranged to slide side by side in the tamping channel (403), and the two hammer rods (1) are independently controlled to perform the tamping action synchronously or alternately.

10. The platform-mobile electromagnetic tamping machine according to claim 1, characterized in that: The bottom of the rack main platform (4) is connected to a rack lower frame (6) extending downward.

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