Hydraulically-driven active hammering type coking coal tamping device

Abstract

The invention discloses a hydraulically-driven active hammering type coking coal tamping device, and relates to the technical field of coke oven tamping, the hydraulically-driven active hammering type coking coal tamping device comprises a rack, a rack platform, a lifting mechanism, a tamping mechanism and a hydraulic system, the rack is a hollow frame body, the rack platform is fixedly connected to the outer side of the middle of the rack in the height direction, the lifting mechanism slides in the rack, and the tamping mechanism is fixedly connected to the rack platform; the tamping mechanism comprises a plurality of tamping hammers fixedly connected to the bottom of the lifting mechanism, and each tamping hammer comprises a tamping hammer cylinder, a hammer rod connected to the lower portion of the tamping hammer cylinder in a piston mode and a hammer head fixedly connected to the end, away from the tamping hammer cylinder, of the hammer rod. The hydraulic system is installed on the rack platform and used for providing hydraulic power for the tamping hammer cylinder body. According to the tamping device, the tamping hammer cylinder body drives the hammer rod to do reciprocating motion, the hammer head is driven to conduct tamping up and down, the speed can be actively adjusted so as to adapt to coal at different falling speeds, and self-adaptive adjustment of the tamping frequency is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of coke oven tamping, and in particular to a hydraulically driven active hammering coke tamping device. Background Art

[0002] As a core step in the coal coking process, the efficiency and quality of coal cake tamping have a direct impact on the performance and output of the final coke product, and is the key to the efficient and economical operation of the coking process.

[0003] When the traditional tamping device is in operation, the rotation of the eccentric wheel is the core power source for the up and down movement of the tamping hammer. The eccentric wheel interacts with the friction pad on the hammer rod with its special profile, and relies on friction to lift the tamping hammer to a certain height. Then the tamping hammer falls rapidly under the action of gravity, and tamps the coal below with great force. However, this seemingly mechanical and repetitive operation process actually contains many complex elements that need to be precisely controlled.

[0004] First, precise control of the eccentric wheel speed is crucial to the tamping effect. If the speed is too fast, the tamping hammer will rise too quickly, resulting in insufficient tamping force; if the speed is too slow, it will affect production efficiency and increase energy consumption. Therefore, the optimal speed of the eccentric wheel should be determined through complex calculations based on the falling distance of the tamping hammer and the required tamping force. However, due to the uncertainty of the coal falling speed and the change in the shape of the coal pile, this optimal speed is often difficult to maintain constant, which brings great challenges to actual operation.

[0005] Secondly, the changeable state of coal also increases the difficulty of tamping. The uneven coal falling speed and different looseness of coal powder accumulation cause the contact distance and angle between the tamping hammer and the coal to change each time it falls. This change not only affects the transmission efficiency of the tamping force, but also may cause the density of each part of the coal cake to be inconsistent, affecting the quality of the final product.

[0006] Third, the combination of the tamping machine and the coal loading car improves the operation efficiency, but brings stability and operability problems. The coal loading car itself is relatively high, and the weight and volume of the tamping machine make the center of gravity of the entire system move further upward. This not only increases the operation risk, but also puts higher requirements on the stability and reliability of the equipment. When the wind is strong or the ground is uneven, it is more likely to shake or tilt, affecting the smooth progress of the tamping operation.

[0007] In addition, the long-term operation of the tamping hammer also has the problem of coal adhesion and scale accumulation. During the tamping process, the coal and the tamping hammer frequently come into contact and rub, and some coal will adhere to the surface of the hammer head. Over time, these adhered coals gradually accumulate into scale, which not only increases the difficulty and cost of cleaning, but also increases the wear of the hammer head and its related parts. At the same time, this part of the coal cannot be effectively used, resulting in a waste of resources.

[0008] In summary, while the traditional tamping device improves work efficiency and product quality, it also faces many challenges and limitations. In order to overcome these shortcomings, it is necessary to explore a coking coal tamping device that can adapt to different types of coal and different coal pile forms. Summary of the invention

[0009] The object of the present invention is to provide a hydraulically driven active hammer type coking coal tamping device to solve the above technical problems existing in the prior art and improve production efficiency and product quality.

[0010] To achieve the above object, the present invention provides the following solution: a hydraulically driven active hammer-type coking coal tamping device, comprising: A frame, wherein the frame is formed by welding a plurality of I-beams and steel plates into a hollow frame body; A rack platform, the rack platform being fixedly connected to the outer side of the middle part in the height direction of the rack; A lifting mechanism, the lifting mechanism slides in the frame and is driven to slide reciprocally up and down by a plurality of telescopic mechanisms fixed to the top of the frame; A tamping mechanism, comprising a plurality of tamping hammers fixedly connected to the bottom of the lifting mechanism, each of the tamping hammers comprising a tamping hammer cylinder, a hammer rod piston-connected to the bottom of the tamping hammer cylinder, and a hammer head fixedly connected to one end of the hammer rod away from the tamping hammer cylinder; A hydraulic system is installed on the frame platform and is used to provide hydraulic power to the tamping hammer cylinder.

[0011] Optionally, the tamping hammer cylinder body has an internal oil cylinder, a piston rod is piston-sliding in the internal oil cylinder, and the piston rod is connected to the hammer rod; a hydraulic oil circuit is arranged in the internal oil cylinder, one end of the hydraulic oil circuit is arranged on one side of the tamping hammer cylinder body to form an oil inlet, and the other end of the hydraulic oil circuit is arranged on one side of the tamping hammer cylinder body to form an oil return port; a reversing valve is arranged on the hydraulic oil circuit between the oil inlet and the oil return port.

[0012] Optionally, the piston rod is provided with two piston bodies at intervals along its axial direction, and the two piston bodies divide the internal oil cylinder into three oil chambers. A nitrogen chamber is also provided inside the tamping hammer cylinder body away from the end of the hammer rod, and the nitrogen chamber is filled with compressed nitrogen. The piston rod enters the nitrogen chamber at the end away from the hammer rod.

[0013] Optionally, the upper side surface of the hammer head is tilted inward and contracted and welded with a stainless steel hammer surface.

[0014] Optionally, the lifting mechanism includes a support plate fixed to the top of the frame, a telescopic mechanism connected to the bottom of the support plate by bolts, a lifting platform connected to the telescopic end of the telescopic mechanism, and a plurality of tamping hammer arrays are distributed below the lifting platform.

[0015] Optionally, the telescopic mechanism is a hydraulic cylinder, and the hydraulic cylinder is connected to the hydraulic system through a hydraulic oil pipe.

[0016] Optionally, the hydraulic system includes a hydraulic pump, a motor, an oil tank fixedly connected to the frame platform, and an oil pipe connecting the hydraulic pump, the motor and the oil tank.

[0017] Optionally, the hydraulic system is electrically connected to a control unit, and the control unit is used to adjust the pressure and flow of the hydraulic system, thereby controlling the tamping intensity and frequency.

[0018] Optionally, the frame includes a guide frame that forms a limit on the left and right sides of the lifting platform, and a frame lower frame that forms a limit on the front and rear sides of the lifting platform.

[0019] The present invention discloses the following technical effects: The tamping device of the present invention drives the hammer rod to reciprocate through the tamping hammer cylinder body, drives the hammer head to tamp up and down, can actively adjust the speed to adapt to coal with different falling speeds, and realizes adaptive adjustment of the tamping frequency. Compared with the tamping method of the prior art in which the cam drives the hammer rod to rise and falls by its own gravity, the hammer force of the tamping device of the present invention is stable, the tamping efficiency is increased, and the coal cakes produced by the tamping device of the present invention are of reliable quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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.

[0021] Figure 1 A front view of an embodiment of the present invention is disclosed; Figure 2 It is a left side view of an embodiment of the present invention; Figure 3 is an axonometric diagram of an embodiment of the present invention; Figure 4 This is a front view of an embodiment of the present invention after the rack platform is removed; Figure 5 It is a structural schematic diagram of a tamping hammer cylinder body in an embodiment of the present invention; Figure 6 It is a connection relationship diagram of the lifting platform, the telescopic mechanism and the tamping hammer in an embodiment of the present invention.

[0022] In the figure: 1. frame; 101. I-beam; 102. steel plate; 103. angle steel; 104. web; 2. frame platform; 3. motor; 4. oil tank; 5. hydraulic oil pipe; 6. bracket plate; 7. telescopic mechanism; 8. telescopic rod; 9. key sleeve; 10. flange; 11. lifting platform; 12. tamping hammer cylinder body; 1201. oil inlet; 1202. oil return port; 1203. hydraulic oil circuit; 1204. reversing valve; 1205. accumulator; 1206. nitrogen chamber; 1207. piston rod; 1208. oil seal; 1209. internal oil cylinder; 13. hammer rod; 14. hammer head. DETAILED DESCRIPTION

[0023] 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.

[0024] Coal cake tamping is a core step in the coal coking process, and its efficiency and quality are directly related to the performance and output of the final coke product. Traditional tamping devices have problems such as difficulty in controlling the speed of the eccentric wheel, increased difficulty in tamping due to the variability of coal material state, stability and operability problems caused by the combined use of tamping machines and coal loading cars, and coal adhesion and fouling caused by long-term operation of tamping hammers. The main purpose of the present invention is to provide a hydraulically driven active hammer-type coking coal tamping device that can effectively solve the above problems.

[0025] 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.

[0026] Reference Figures 1 to 6 As shown, an embodiment of the present invention provides a hydraulically driven active hammer-type coking coal tamping device, comprising a frame 1, a frame platform 2, a lifting mechanism and a tamping mechanism.

[0027] In the above embodiment, the frame 1 is welded into a frame body by a plurality of I-beams 101, steel plates 102 and webs 104, and is reinforced by angle steels 103. When viewed from above the frame 1, the frame body of the frame 1 is hollow inside, providing a movement space for the lifting mechanism and the tamping mechanism to move up and down, and can play a guiding role, limiting the swing of the two in the radial direction. In the above structure, the left and right sides of the lifting platform 11 are slidably connected to the side guide frame of the frame 1, for example, they can be connected by setting guide wheels, and the lifting platform 11 moves up and down along the side guide frame, which can limit the movement in the left and right directions. The above frame 1 has a frame lower frame that forms a limit from the front and rear sides of the lifting platform 11, and the frame lower frame can limit the movement of the lifting platform 11 in the front and rear directions.

[0028] In the above embodiment, the frame platform 2 is located outside the middle of the frame 1 in the height direction and is fixedly connected to the frame 1. The frame platform 2 is provided with a hydraulic system including a hydraulic pump, a motor 3, an oil tank 4, etc. for providing hydraulic power.

[0029] In the above embodiment, the lifting mechanism includes a bracket plate 6 fixed to the frame 1, a telescopic mechanism 7 connected to the bottom of the bracket plate 6 by bolts, and a lifting platform 11 connected to the telescopic end of the telescopic mechanism 7. The bracket plate 6 is fixed to the frame 1 by bolts, and the telescopic mechanism 7 is installed at the bottom of the bracket plate 6. The telescopic mechanism 7 has a telescopic rod 8, and the telescopic rod 8 is threadedly connected to the flange 10 through a key sleeve 9. The flange 10 is connected to the lifting platform 11 by bolts. The telescopic mechanism 7 drives the telescopic rod 8 to telescope up and down to complete the movement of the lifting platform 11.

[0030] In some possible embodiments, the size of the lifting platform 11 is adapted to the inner size of the frame of the rack 1, and a certain gap is left between the side of the lifting platform 11 and the inner side of the frame of the rack 1, which can eliminate the swing caused by radial force when the lifting platform 11 moves up and down.

[0031] In some possible embodiments, the telescopic mechanism 7 is a hydraulic cylinder, and the telescopic rod 8 is a piston-type telescopic rod 8 connected in the hydraulic cylinder. In this embodiment, a hydraulic oil pipe 5 is connected to the frame 1, and the hydraulic oil pipe 5 is used to connect the hydraulic cylinder and the hydraulic system located on the frame platform 2. The hydraulic system on the frame platform 2 supplies hydraulic oil to the hydraulic cylinder through the hydraulic oil pipe 5, driving the entire lifting mechanism to move up and down.

[0032] In some possible embodiments, the hydraulic system is electrically connected to a control unit, which can precisely control the tamping force by precisely adjusting the pressure and flow of the hydraulic system, thereby controlling the tamping intensity and frequency, thereby ensuring that each tamping acts on the coal with optimal impact force.

[0033] In the above embodiment, the tamping mechanism includes a plurality of tamping hammers fixedly connected to the bottom of the lifting platform 11, each of the tamping hammers includes a tamping hammer cylinder body 12, a hammer rod 13, and a hammer head 14. In the tamping hammer, the tamping hammer cylinder body 12 is fixedly connected to the bottom of the lifting platform 11, and the hammer rod 13 is piston-connected to the lower end of the tamping hammer cylinder body 12. The end of the hammer rod 13 away from the tamping hammer cylinder body 12 is fixedly connected to the hammer head 14. The tamping hammer of this embodiment eliminates the drill rod, and uses a piston as the hammer rod 13 connected to the hammer head 14. The upper side surface of the hammer head 14 is tilted inward and contracted, and the inclination angle is increased compared to the traditional hammer head, and a stainless steel hammer face is welded on the cut bevel to reduce coal cake adhesion.

[0034] Compared with the existing tamping device, the tamping device adopting the above structure has a greatly shortened height. The tamping hammer in the existing tamping device is about 9 meters long, while in this embodiment, the hammer rod 13 of the tamping hammer is shorter, and the center of gravity of the entire device is greatly reduced, which is beneficial to the operation and stability of the entire equipment.

[0035] In some possible embodiments, Figure 5 As shown, the tamping hammer cylinder body 12 includes a cylinder body, an internal oil cylinder 1209 , an oil inlet 1201 , an oil return port 1202 , a hydraulic oil circuit 1203 , a reversing valve 1204 , an accumulator 1205 , a nitrogen chamber 1206 , a piston rod 1207 , and an oil seal 1208 . Specifically, the cylinder body has an internal oil cylinder 1209 inside, and a piston rod 1207 slides inside the internal oil cylinder 1209. The hammer rod 13 is located at the lower end of the piston rod 1207 and abuts against the end of the piston rod 1207. An oil seal 1208 is sealed between the piston rod 1207 and the hammer rod 13 and the internal oil cylinder 1209. The piston rod 1207 is provided with two piston bodies along its axial direction. The two piston bodies divide the internal oil cylinder 1209 into an upper oil chamber, a middle oil chamber and a lower oil chamber, one above and one below. The upper oil chamber is located at the innermost side, and an independent nitrogen chamber 1206 is also provided on the inner side of the upper oil chamber. The nitrogen chamber 1206 is filled with compressed nitrogen, and one end of the piston rod 1207 enters the nitrogen chamber 1206. A plurality of hydraulic oil circuits 1203 are arranged in the internal oil cylinder 1209, one end of the hydraulic oil circuit 1203 is arranged on one side of the cylinder body to form an oil inlet 1201, and the other end of the hydraulic oil circuit 1203 is arranged on one side of the cylinder body to form an oil return port 1202. The reversing valve 1204 is arranged in the hydraulic oil circuit 1203, located between the oil inlet 1201 and the oil return port 1202, and an accumulator 1205 is also arranged on the hydraulic oil circuit 1203 connected with the reversing valve 1204 and the internal oil cylinder 1209. The accumulator 1205 is a device that can store energy under high pressure, and is used for energy storage in the hydraulic system so as to release energy when needed. The main functions of the nitrogen chamber 1206 include pressure compensation, volume compensation and pulsation absorption. In the hydraulic system, the nitrogen chamber 1206 compensates for the changes in system pressure and volume through the nitrogen pressure inside it, thereby ensuring the stability and reliability of the system.

[0036] The tamping hammer adopting the above-mentioned structure does not need to be provided with a very long drill rod. One end of the hammer rod 13 slides in the tamping hammer cylinder body 12 in a piston-like manner, and the other end is directly connected to the hammer head 14. The piston rod 1207 in the internal structure of the tamping hammer cylinder body 12 releases a large axial force, and a small stroke can also meet the force required for tamping coal.

[0037] The tamping hammer cylinder body 12 of the above structure is different from a conventional hydraulic cylinder. In the embodiment of the present invention, the hammer head 14 is directly fixed under the piston rod 1207 through the hammer rod 13, and the hammer head 14 is directly driven up and down by the piston rod 1207. The conventional hydraulic cylinder completes the tamping work by hitting the drill rod with the piston rod 1207.

[0038] When the tamping hammer cylinder body 12 of the above structure is working, high-pressure hydraulic oil is first introduced from the oil inlet 1201. At this time, the oil circuit is blocked by the reversing valve 1204, and the hydraulic oil is divided into an upper and a lower circuit. The upper circuit will push the reversing valve 1204 to reach the lower dead center and connect the return oil pipe, and the lower circuit will reach the accumulator 1205 and the oil cylinder at the same time, pushing the accumulator 1205 to compress the nitrogen while filling the oil cylinder to push the piston rod 1207 upward, continuously compressing the nitrogen in the top air chamber, and the upper piston squeezes the hydraulic oil out along the return oil pipe, and when the piston runs to the upper dead center, the oil circuit of the lower chamber of the reversing valve 1204 is connected, and the hydraulic oil reaches the bottom of the reversing valve 1204 from the oil cylinder. Due to the large area of ​​the lower chamber of the reversing valve 1204, the oil The pressure on the upper side is greater than that on the upper side, so the pressure moves upward to connect the oil circuit of the oil inlet pipe. At this time, the piston rod 1207 is subjected to the oil pressure in the opposite direction, loses support and begins to fall. During this period, the top of the piston rod 1207 is thrust by the compressed air chamber, and at the same time, it is subjected to the pressure exerted on the upper piston by the compressed nitrogen in the nitrogen chamber 1206, thereby accelerating the fall, continuously squeezing the hydraulic oil on the lower side into the upper oil chamber, and finally reaching the lower dead point, so the cavity in the middle of the piston rod 1207 is connected to the lower chamber of the reversing valve 1204 and starts to release pressure. The reversing valve 1204 is pushed downward by the oil pressure on the upper side, pushing the hydraulic oil into the cavity between the pistons and discharging it from the oil pipe. The reversing valve 1204 reaches the lower dead point again, and connects the upper oil chamber and the return oil circuit to start the next cycle.

[0039] The working principle of the tamping device of this embodiment is as follows: in the initial state (equipment shutdown state), the entire tamping device is in a stationary state. When the coal loading car returns to the initial position, the hydraulic system transports hydraulic oil to the hydraulic cylinder and the tamping hammer cylinder body 12 through the hydraulic oil pipe 5, the hydraulic cylinder works, the telescopic rod 8 extends, the lifting mechanism moves downward, and drives the tamping mechanism to move down to above the bottom of the coal charging box; at this time, the coal falls, and the hydraulic cylinder and the tamping hammer cylinder body 12 work at the same time. While the lifting mechanism drives the tamping mechanism upward, the tamping hammer in the tamping mechanism moves up and down to tamp the coal until the lifting mechanism moves up to the initial position, and the tamping is completed.

[0040] The working principle of the tamping hammer is as follows: the tamping hammer cylinder 12 drives the piston rod 1207 to reciprocate up and down through the hydraulic oil circuit 1203, and the piston rod 1207 connected to the hammer rod 13 drives the hammer rod 13 to reciprocate synchronously, and the hammer head 14 located at the bottom of the hammer rod 13 performs tamping operations on the coal. In the tamping device of the prior art, the tamping hammer is lifted by the rotation of the cam, and the tamping operation is completed by gravity falling. This method has high requirements for the cam speed. If the cam speed is fast and the tamping hammer rises quickly, the falling time needs to be calculated according to the falling distance of the tamping hammer, and then the cam speed is determined. Due to the different falling speeds of the coal and the different accumulation of coal powder, the distance that the tamping hammer contacts the coal each time it falls is different, and the strength of tamping the coal each time is also different, resulting in different coal cake quality. The tamping hammer of the embodiment of the present invention adopts hydraulic drive, which can adjust the tamping rate, has adjustability, and the efficiency can be improved.

[0041] It should be understood that, in practical applications, the telescopic mechanism 7 may also be other drive structures or mechanical devices capable of realizing linear motion functions / rotational motion / telescopic motion, for example, it may be a servo motor, a cylinder, an electric cylinder, a screw structure, and the like.

[0042] Compared with the prior art, the embodiments of the present invention at least disclose the following beneficial effects: The hydraulic system has powerful power output, precise control capability and good stability, and can provide stable, high-speed and high-frequency hammering action for the tamping hammer.

[0043] By precisely adjusting the pressure and flow of the hydraulic system, the tamping force can be accurately controlled to ensure that each tamping acts on the coal with the optimal impact force, thereby greatly improving the density and uniformity of the coal cakes.

[0044] The hydraulic drive system has the advantages of compact structure and easy maintenance.

[0045] Compared with traditional mechanical transmission systems, hydraulic systems reduce wear and failure rates of mechanical components and reduce maintenance costs.

[0046] The flexibility and adjustability of the hydraulic system also provide more possibilities for the optimization and upgrading of the tamping process. For example, the hydraulic system parameters can be adjusted to adapt to the tamping requirements of different types of coal and different coal pile forms, thereby further improving production efficiency and product quality.

[0047] The details not described in detail in the present invention are all conventional technical means well known to those skilled in the art.

[0048] 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.

[0049] 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 hydraulically driven active hammer-type coking coal tamping device, characterized in that: include: A frame (1), wherein the frame (1) is formed by welding a plurality of I-beams (101) and steel plates (102) into a frame body with a hollow interior; A rack platform (2), the rack platform (2) being fixedly connected to the outer side of the middle part of the rack (1) in the height direction; A lifting mechanism, the lifting mechanism slides in the frame (1) and is driven to slide reciprocally up and down by a plurality of telescopic mechanisms (7) fixed to the top of the frame (1); A tamping mechanism, comprising a plurality of tamping hammers fixedly connected to the bottom of the lifting mechanism, each of the tamping hammers comprising a tamping hammer cylinder (12), a hammer rod (13) piston-connected below the tamping hammer cylinder (12), and a hammer head (14) fixedly connected to an end of the hammer rod (13) away from the tamping hammer cylinder (12); A hydraulic system is installed on the frame platform (2) and is used to provide hydraulic power to the tamping hammer cylinder (12).

2. The hydraulically driven active hammer-type coking coal tamping device according to claim 1 is characterized in that: The tamping hammer cylinder body (12) comprises an internal oil cylinder (1209), a piston rod (1207) is piston-slidably disposed in the internal oil cylinder (1209), and the piston rod (1207) is connected to the hammer rod (13); a hydraulic oil circuit (1203) is disposed in the internal oil cylinder (1209), one end of the hydraulic oil circuit (1203) is disposed on one side of the tamping hammer cylinder body (12) to form an oil inlet (1201), and the other end of the hydraulic oil circuit (1203) is disposed on one side of the tamping hammer cylinder body (12) to form an oil return port (1202); a reversing valve (1204) is disposed on the hydraulic oil circuit (1203) between the oil inlet (1201) and the oil return port (1202).

3. The hydraulically driven active hammer-type coking coal tamping device according to claim 2, characterized in that: The piston rod (1207) is provided with two piston bodies spaced apart along its axial direction, and the two piston bodies divide the internal oil cylinder (1209) into three oil chambers. A nitrogen chamber (1206) is also provided inside the tamping hammer cylinder body (12) at one end away from the hammer rod (13), and the nitrogen chamber (1206) is filled with compressed nitrogen. The end of the piston rod (1207) away from the hammer rod (13) enters the nitrogen chamber (1206).

4. The hydraulically driven active hammer-type coke tamping device according to claim 1, 2 or 3, characterized in that: The upper side surface of the hammer head (14) is tilted inwardly and contracted and welded with a stainless steel hammer surface.

5. The hydraulically driven active hammer-type coking coal tamping device according to claim 1, characterized in that: The lifting mechanism comprises a support plate (6) fixed to the top of the frame (1), a telescopic mechanism (7) connected to the bottom of the support plate (6) by bolts, and a lifting platform (11) connected to the telescopic end of the telescopic mechanism (7); and a plurality of tamping hammer arrays are distributed below the lifting platform (11).

6. The hydraulically driven active hammer-type coking coal tamping device according to claim 5, characterized in that: The telescopic mechanism (7) is a hydraulic cylinder, and the hydraulic cylinder is connected to the hydraulic system via a hydraulic oil pipe (5).

7. The hydraulically driven active hammer-type coking coal tamping device according to claim 1, characterized in that: The hydraulic system comprises a hydraulic pump, a motor (3), an oil tank (4) fixedly connected to the frame platform (2), and an oil pipe connecting the hydraulic pump, the motor (3) and the oil tank (4).

8. The hydraulically driven active hammer-type coke tamping device according to claim 7, characterized in that: The hydraulic system is electrically connected to a control unit, and the control unit is used to adjust the pressure and flow of the hydraulic system, thereby controlling the tamping intensity and frequency.

9. The hydraulically driven active hammer-type coke tamping device according to claim 1, characterized in that: The frame (1) comprises a guide frame for forming a limit from the left and right sides of the lifting platform (11), and a frame lower frame for forming a limit from the front and rear sides of the lifting platform (11).

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