Vibration impact shelling device and method

Abstract

The invention discloses a vibration impact shelling device and method, which relates to the technical field of shelling process in metallurgical production, solves the problems of insufficient shelling energy leading to failure to break hard crusts, large cylinder gas consumption, short cylinder service life, and easy ablation and sticking of hammer heads, and the specific scheme is as follows: a vibration impact shelling device comprises a stroke cylinder, one end of the stroke cylinder is connected to an air control valve, and the other end is connected to a vibration impactor, and the bottom of the vibration impactor is connected to a hammer rod; the top of the vibration impactor is connected to an air intake pipe, a vibration shaft is axially arranged inside, the bottom of the vibration shaft passes through the vibration impactor and is connected to the hammer rod, a pressing plate is arranged on the top of the vibration shaft, a reset spring is arranged between the pressing plate and the bottom of the inner side of the vibration impactor, an air outlet is arranged on the side wall of the bottom of the vibration impactor, and the compressed air in the air intake pipe enters the vibration impactor to push the pressing plate to move until the pressing plate is deflated at the moment of approaching the air outlet and the vibration shaft is reset through the reset spring.

Description

Technical Field

[0001] The invention relates to the technical field of shell breaking process in metallurgical production, in particular to a vibration impact shell breaking device and method. Background Art

[0002] In metallurgical production, such as the alumina feeding port in electrolytic aluminum production, after feeding, a hard crust will often form on the electrolyte surface above the feeding port, sealing the feeding port, resulting in the inability to carry out the subsequent feeding process normally. In order to clean the hard crust at the feeding port, the current cleaning method is to use compressed air to push the cylinder connected to the shelling hammer head, and control the reciprocating motion of the cylinder to form a production process of hammering the hard crust at the feeding port. The cylinder hammer shelling device currently used in electrolytic aluminum production, its working principle is to use compressed air to push the cylinder connected to the shelling hammer head, and form a hammering shelling method through the reciprocating motion of the cylinder. The use of this cylinder hammer shelling device has the following problems:

[0003] 1. Using compressed air to drive the double-acting hammer cylinder to perform high-energy, frequent reciprocating strokes and hammering not only consumes a large amount of pneumatic energy, but also accelerates the wear of the cylinder friction pair and seals, resulting in the cylinder's service life being shortened by more than 1 / 2 compared to the normal life. At the same time, as the cylinder wears, the shell breaking energy often decreases, and the success rate of shell breaking is reduced, resulting in the inability to break the hard crust and affecting the normal feeding;

[0004] 2. Compressed air is used to push the cylinder to connect the shelling hammer. In the process of hammering the hard crust at the feeding port through the reciprocating motion of the cylinder, the hammering force effect depends on the hammering energy and the number of hammering. Therefore, under the time limit of the production process, the frequency of the hammer hitting the crust by controlling the air intake and exhaust action of the cylinder should be less than 1 time per second, resulting in the accumulated time of the hammer entering the molten aluminum in the electrolytic cell being too long, which will frequently cause problems such as hammer ablation and hammer sticking, which affect normal production;

[0005] 3. Although the electrolytic aluminum industry has used control technologies such as "intelligent control shelling system" and "adaptive shelling control method and control system" to intelligently detect and control the operation of shelling cylinders, in order to solve the problem of insufficient shelling energy leading to the inability to break hard crusts, the problem of large cylinder gas consumption, the problem of short cylinder service life and constant replacement, and the hammer head is prone to ablation and sticking. However, since these intelligent control systems still use the cylinder hammer shelling working mode and have not been fundamentally changed, many of the intelligent control shelling systems that are used in reality still have the above-mentioned problems. Summary of the invention

[0006] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a vibration impact shell breaking device. Through the setting of a vibration impactor, the working efficiency of striking hard crusts is increased from more than 1 time per second to about 40 times per second, and the success rate of shell breaking can be greatly improved. At the same time, because the hammer head is in a vibrating state when entering the molten aluminum in the electrolyte of the electrolytic cell, the adhesion of the hammer head to the electrolyte is reduced, and the sticking rate of the hammer head is greatly reduced.

[0007] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0008] In a first aspect, a vibration impact type shell breaking device comprises a stroke cylinder, one end of the stroke cylinder is connected to an air control valve, the other end is connected to a vibration impactor, and the bottom of the vibration impactor is connected to a hammer rod;

[0009] The top of the vibration impactor is connected to the air inlet pipe, and a vibration shaft is axially arranged inside. The bottom of the vibration shaft passes through the vibration impactor and is connected to the hammer rod. A pressure plate is arranged on the top of the vibration shaft, and a reset spring is arranged between the pressure plate and the bottom of the inner side of the vibration impactor. An air outlet is arranged on the bottom side wall of the vibration impactor. The compressed air in the air inlet pipe enters the vibration impactor to push the pressure plate to move until the pressure plate is deflated at the moment it approaches the air outlet and the vibration shaft is reset through the reset spring.

[0010] As a further implementation, the return spring sleeve is arranged on the circumferential side of the vibration shaft.

[0011] As a further implementation, the top of the vibration impactor is a sealing cover, a sealing ring is arranged on the top edge of the sealing cover, a first air inlet is arranged on the sealing cover, and the first air inlet is connected to the air inlet pipe.

[0012] As a further implementation method, it also includes a hammer shell, which is sleeved on the vibrating impactor and the periphery of the stroke cylinder, the bottom of the hammer shell is open, and the hammer rod passes through the bottom of the hammer shell.

[0013] As a further implementation, a fixing portion is provided on the periphery of the hammer rod, a buffer spring is sleeved on the periphery of the hammer rod at the bottom of the hammer body shell, and a hammer head is provided at the bottom of the hammer body.

[0014] As a further implementation, a mounting bracket is provided on the peripheral side of the hammer shell.

[0015] As a further implementation, a fixing plate is provided in the hammer housing, the fixing plate is fixed between the stroke cylinder and the vibration impactor, the stroke cylinder output end and the air inlet pipe pass through the fixing plate and are connected to the top of the vibration impactor.

[0016] As a further implementation, the air-controlled valve is provided with a second air inlet and an air outlet, and the top of the air inlet pipe is connected to the second air inlet.

[0017] As a further implementation, the fixing plate is provided with a through hole, and the top circumference of the hammer shell is also provided with a plurality of through holes.

[0018] In a second aspect, a working method of a vibration impact shelling device is provided, using any of the vibration impact shelling devices described above, comprising the following steps:

[0019] The air control valve opens, and compressed air enters the stroke cylinder and the intake pipe;

[0020] The output end of the stroke cylinder extends to the maximum stroke, pushing the vibration impactor and the hammer rod to move until the bottom of the hammer rod is located on the top of the hard crust;

[0021] The compressed air pushes the pressing plate to move until the pressing plate is close to the air outlet, and the air is released instantly, and the vibration shaft is pushed back to its original position through the reset spring, and this reciprocating cycle is repeated to achieve continuous striking of the hard crust.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1. The present invention can use a small stroke cylinder and a vibration impactor with less gas energy to replace the hammer cylinder with large cylinder diameter, large thrust and large gas consumption used in the original shell breaking device, which effectively reduces the gas consumption and thus reduces energy consumption; the working efficiency of striking the hard crust is increased from more than 1 time per second to about 40 times per second, and the success rate of shell breaking can be greatly improved. At the same time, because the hammer head is in a vibrating state when entering the molten aluminum in the electrolyte of the electrolytic cell, the adhesion between the hammer head and the electrolyte is reduced, and the sticking rate of the hammer head is greatly reduced.

[0024] 2. The vibration impactor of the present invention is a kind of air intake push and air exhaust thrust similar to the single-acting cylinder working state, the gas consumption is lower than the double-acting cylinder, because there is no cylinder friction pair, only the sealing ring and the vibration shaft thrust contact wear, compared with the original shell breaking hammer cylinder continuous reciprocating motion caused by the wear rate of the friction pair and the seal, the service life of the vibration impactor can be more than 2 to 3 times the life of the existing shell breaking device.

[0025] 3. The service life of the small-stroke cylinder of the present invention is greatly improved, the number of cylinder replacements and the update speed are reduced, and a large amount of production maintenance resources and energy can be saved every year.

[0026] 4. The present invention has the characteristics of simple and convenient technical transformation and installation, high operating efficiency of the shelling device, and long working life. It has high cost performance of input and output, and has economic benefits and development prospects for large-scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0028] Figure 1 The utility model is a basic structural diagram of a static or recovery state of an existing cylinder hammer type shell breaking device.

[0029] Figure 2 The utility model is a basic structural diagram of the dynamic or pushing state of the existing cylinder hammer type shell breaking device.

[0030] Figure 3 It is a basic structural diagram of a static or recovery state of a vibration impact shell breaking device in an embodiment of the present invention.

[0031] Figure 4 It is a basic structural diagram of the dynamic or ejection state of the vibration impact shell breaking device in the embodiment of the present invention.

[0032] Figure 5 It is a front view of the vibration impactor in the embodiment of the present invention.

[0033] Figure 6 It is a basic structural diagram of the static or recovery state of the vibration impactor in the embodiment of the present invention.

[0034] Figure 7 It is a basic structural diagram of the dynamic or push-out state of the vibration impactor in the embodiment of the present invention.

[0035] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0036] Among them: 1-1. Air control valve, 1-2. Hammer cylinder, 1-3. Hammer rod, 1-4. Hard crust, 1-5. Hammer head, 1-6. Buffer spring, 1-7. Hammer body shell, 1-8. Mounting bracket, 1-9. Air inlet, 1-10. Exhaust port;

[0037] 2-1. Air control valve, 2-2. Stroke cylinder, 2-3. Inlet pipe, 2-4. Vibration impactor, 2-5. Fixing plate, 2-6. Hammer rod, 2-7. Hard crust, 2-8. Hammer head, 2-9. Buffer spring, 2-10. Hammer body shell, 2-11. Cylinder shell, 2-12. Mounting bracket, 2-13. Second air inlet, 2-14. Exhaust port, 2-15. Through hole;

[0038] 3-1. First air inlet, 3-2. Housing, 3-3. Air outlet, 3-4. Return spring, 3-5. Vibration shaft, 3-6. Sealing rubber ring, 3-7. Sealing cover, 3-8. Compressed air. DETAILED DESCRIPTION

[0039] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0040] like Figure 1-Figure 2 As shown, Figure 1 It is a basic structural diagram of the static or recovery state of the cylinder hammer shell breaking device used in the existing electrolytic aluminum production process. Figure 2 It is a basic structural diagram of a cylinder hammer shelling device in a dynamic or push-out state. An air control valve 1-1 is provided on the top of the hammer housing 1-7, a hammer cylinder 1-2 is axially provided inside the hammer housing, the output end of the hammer cylinder 1-2 is connected to a hammer rod 1-3, the hammer rod passes through the hammer housing downward, a buffer spring 1-6 is provided at the bottom of the hammer housing, the buffer spring is sleeved around the hammer rod 1-3, a hammer head 1-5 is fixed at the bottom of the hammer rod, an air inlet 1-9 and an exhaust port 1-10 are provided on the air control valve, and a mounting bracket 1-8 is fixed around the hammer housing. Through the action of the air control valve, the extension and contraction of the hammer cylinder 1-2 is controlled, so that the hammer head at the bottom of the hammer rod can hit the hard crust.

[0041] The feeding frequency in electrolytic aluminum production mostly adopts a process flow of >90S. The specific working mode of the shelling hammer is to use a computer to control the compressed air solenoid valve, and control the movement times and time of the shelling cylinder and the hammer, as well as the amount of pipe feeding. The computer presets the cylinder movement time, and after the estimated time for the hammer to break the hard crust on the electrolyte surface and form a hole, the feeding pipe is controlled to feed the material to the feeding port, thus completing a shelling and feeding production process.

[0042] Figure 1 and Figure 2 The working principle of the device shown is to control the running time and working times of the air control valve to push the cylinder to make a reciprocating motion, and at the same time push the hammer rod and hammer head to hit the hard crust during the motion. The use of this cylinder hammer shelling device accelerates the wear of the cylinder friction pair and the seal. As the cylinder wears, the shelling energy often decreases, and the success rate of shell breaking decreases. The frequency of controlling the cylinder intake and exhaust action to push the hammer head to hit the crust is less than 1 time per second, resulting in the cumulative time of the hammer head entering the molten aluminum in the electrolytic cell being too long, which will frequently cause problems such as hammer head ablation and hammer head sticking.

[0043] Embodiment 1

[0044] In a typical embodiment of the present invention, a vibration impact shelling device is used Figure 3 and Figure 4Taking the view direction as an example, it includes a stroke cylinder 2-2, the top of the stroke cylinder 2-2 is connected to the air control valve 2-1, the bottom output end is connected to the vibration impactor 2-4, and the bottom of the vibration impactor 2-4 is connected to the hammer rod 2-6. The stroke cylinder 2-2 is used to push the vibration impactor 2-4 downward to the maximum push stroke through the output end, and the vibration impactor 2-4 realizes the rapid striking of the hard crust by the hammer head 2-8 set at the bottom of the hammer rod 2-6 in a high-frequency vibration manner.

[0045] Specifically, the vibration impact shelling device includes a hammer housing 2-10, which is sleeved on the vibration impactor and the periphery of the stroke cylinder. The part of the hammer housing 2-10 located on the periphery of the stroke cylinder is a cylinder housing 2-11. An air control valve 2-1 is installed on the top of the cylinder housing 2-11. The air control valve is provided with a second air inlet 2-13 and an exhaust port 2-14. A mounting bracket 2-12 is provided on the periphery of the cylinder housing 2-11, which is used to fix the vibration impact shelling device through the mounting bracket 2-12.

[0046] Furthermore, the output end of the stroke cylinder is an output shaft, and a fixing plate 2-5 is provided in the hammer housing, and the fixing plate 2-5 is fixed between the stroke cylinder 2-2 and the vibration impactor 2-4. The output shaft of the stroke cylinder passes through the fixing plate and is connected to the vibration impactor 2-4.

[0047] The top of the vibration impactor is hinged to the output shaft through a bracket, and a sealing cover 3-7 is set on the top. The bracket is fixed on the sealing cover. The first air inlet 3-1 is set on the sealing cover. A sealing rubber ring 3-6 is set on the inner wall of the vibration impactor 2-4 at the bottom of the sealing cover 3-7.

[0048] The top of the vibration impactor is connected to the air intake pipe 2-3, and the top of the air intake pipe is connected to the second air intake port. Compressed air enters the air control valve and the air intake pipe through the air pipe to achieve synchronous operation of the stroke cylinder 2-2 and the vibration impactor 2-4. The air intake pipe body is arranged close to the inner wall of the cylinder housing 2-11. A through hole is provided on the edge of the fixing plate 2-5 for the air intake pipe 2-3 to pass through and connect to the first air intake port 3-1 of the vibration impactor.

[0049] Furthermore, a vibration shaft 3-5 is axially provided inside the vibration impactor 2-4, a pressure plate is provided on the top of the vibration shaft 3-5, the bottom of the vibration shaft 3-5 passes through the vibration impactor and is fixedly connected to the hammer rod 2-6, the bottom of the hammer body shell 2-10 is open, and the hammer rod 2-6 passes through the bottom of the hammer body shell 2-10.

[0050] The outer diameter of the pressure plate is smaller than the inner diameter of the vibration impactor, so that there is a gap between the edge of the pressure plate and the inner wall of the vibration impactor. The pressure plate is in a cone shape. A reset spring 3-4 is provided between the pressure plate and the inner bottom of the vibration impactor. The reset spring 3-4 is sleeved on the side of the vibration shaft 3-5.

[0051] An air outlet 3-3 is provided around the bottom of the vibration impactor 2-4. The inner diameter of the bottom part of the inner wall of the vibration impactor is smaller than the inner diameter of the middle and upper parts, thereby forming a step. The step is used to abut the pressure plate. A fixing part is provided around the hammer rod. A buffer spring 2-9 is sleeved around the hammer rod at the bottom of the hammer body shell for buffering the hammer rod. A hammer head is provided at the bottom of the hammer rod 2-6 for hitting hard crusts.

[0052] The fixing plate 2-5 is provided with a through hole for the air discharged from the bottom air outlet of the vibration impactor 2-4 to pass through, and the top circumferential side of the hammer housing 2-10 (cylinder housing 2-11) is also provided with a plurality of through holes 2-15 for exhausting the air. A plurality of through holes are arranged circumferentially on the cylinder housing 2-11, and the through holes are used as air outlets, which are not only the exhaust passages of the vibration impact cylinder, but also have the function of cooling the cylinder and the air pipe.

[0053] The working principle of the vibration impactor of this embodiment is to convert the pressure energy of compressed gas into the kinetic energy of the high-speed motion of the piston to do work. The key technical point is the number of gas outlets to be set during design and manufacturing, which needs to be determined according to the specific installation location.

[0054] like Figure 3-Figure 7 As shown, during operation, compressed air 3-8 enters the housing 3-2 of the vibration impactor from the first air inlet 3-1, pushing the pressure plate to compress the return spring 3-4, and the pressure plate pushes the vibration shaft 3-5 to move downward, so that the bottom of the vibration shaft 3-5 is pushed out of the housing 3-2, causing the bottom of the vibration shaft 3-5 to move to the bottom end of the housing 3-2.

[0055] The high pressure of the compressed air 3-8 entering the outer shell 3-2 passes through the gap between the pressure plate and the outer shell 3-2, and finally forms a state of instantaneous pressure relief through the air outlet 3-3, thereby generating a high-pressure motion state of instantaneous impact; since the high-pressure air space in the outer shell 3-2 is instantly depressurized, the return spring 3-4 rebounds from the compressed state to the reset state, and pushes the vibration shaft 3-5 to instantly rebound to the state of sealing the first air inlet 3-1 with the sealing rubber ring 3-6, thereby completing a vibration impact process.

[0056] Since the completion time of a vibration impact process is usually about 1 / 40 second, the working state of the vibration impactor 2-4 can produce a state of reciprocating vibration impact motion stroke 40 times per second.

[0057] The specific working principle of the vibration impact shelling device is as follows:

[0058] The compressed air enters the stroke cylinder 2-2 through the second air inlet 2-13, and enters the vibration impactor 2-4 through the air inlet pipe 2-3. The stroke cylinder 2-2 pushes the vibration impactor 2-4 to move downward, and the vibration impactor 2-4 pushes the hammer rod 2-6 downward to move. When the hammer head 2-8 is pushed to the upper surface position of the hard crust 2-7, the output shaft of the stroke cylinder 2-2 is in a stagnant state at a fixed maximum push stroke position.

[0059] The vibration impactor 2-4 in synchronous working state pushes the hammer rod 2-6 and the hammer head 2-8 at the same time, and strikes the hard crust 2-7 in a high-pressure impact state of a reciprocating vibration impact motion stroke of 40 times per second; at the same time, the decompression air discharged from the air outlet 3-3 of the vibration impactor 2-4 is discharged through the through hole 2-15 in the hammer body shell 2-10 and the cylinder shell 2-11, thereby completing a vibration impact operation to strike the hard crust.

[0060] The vibration impact shell breaking device of this embodiment can be directly replaced with a product device designed with the working principle of the present invention without changing the structural dimensions and working control state of the original shell breaking device, and can be used according to the original production process.

[0061] Although this embodiment innovates the working principle of shelling movement and adds a vibrating impactor, it is basically the same as the cylinder hammer shelling device in appearance structure and size, and the size of the mounting bracket 2-12 is exactly the same as that of the cylinder hammer shelling device, so the application method is also exactly the same. The difference is that the cylinder stroke working state of this embodiment is adopted, and only reciprocating operation is performed once in a process cycle, and the working efficiency of striking (beating) hard crusts under the same working air pressure state is increased from more than 1 time per second to about 40 times per second, which not only greatly improves the success rate of shelling and breaking, but also reduces the adhesion of the hammer head to the electrolyte and greatly reduces the sticking rate of the hammer head because the hammer head is in a vibrating state when entering the molten aluminum in the electrolytic cell electrolyte.

[0062] The working structure and appearance installation dimensions of the product designed and manufactured according to the working principle of the vibration impact shelling device are basically the same as the original pneumatic shelling device, and the method of use is the same. When replacing it, just install the vibration impact shelling device in the original position and it can be used without debugging or installing other devices.

[0063] Embodiment 2

[0064] A working method of a vibration impact shelling device, using a vibration impact shelling device as described in the first embodiment, comprises the following steps:

[0065] The air control valve opens, and compressed air enters the stroke cylinder and the intake pipe;

[0066] The output end of the stroke cylinder extends to the maximum stroke, pushing the vibration impactor and the hammer rod to move until the bottom of the hammer rod is located on the top of the hard crust;

[0067] The compressed air pushes the pressing plate to move until the pressing plate is close to the air outlet, and the air is released instantly, and the vibration shaft is pushed back to its original position through the reset spring, and this reciprocating cycle is repeated to achieve continuous striking of the hard crust.

[0068] Specifically, when the vibration impact shelling device is working:

[0069] The compressed air enters the stroke cylinder 2-2 through the second air inlet 2-13, and enters the vibration impactor 2-4 through the air inlet pipe 2-3. The stroke cylinder 2-2 pushes the vibration impactor 2-4 to move downward, and the vibration impactor 2-4 pushes the hammer rod 2-6 downward to move. When the hammer head 2-8 is pushed to the upper surface position of the hard crust 2-7, the output shaft of the stroke cylinder 2-2 is in a stagnant state at a fixed maximum push stroke position.

[0070] The vibration impactor 2-4 in synchronous working state pushes the hammer rod 2-6 and the hammer head 2-8 at the same time, and strikes the hard crust 2-7 in a high-pressure impact state of a reciprocating vibration impact motion stroke of 40 times per second; at the same time, the decompression air discharged from the air outlet 3-3 of the vibration impactor 2-4 is discharged through the through hole 2-15 in the hammer body shell 2-10 and the cylinder shell 2-11, thereby completing a vibration impact operation to strike the hard crust.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vibration impact shelling device, characterized in that: It includes a stroke cylinder, one end of which is connected to the air control valve, the other end of which is connected to the vibration impactor, and the bottom of the vibration impactor is connected to a hammer rod; The top of the vibration impactor is connected to the air inlet pipe, and a vibration shaft is axially arranged inside. The bottom of the vibration shaft passes through the vibration impactor and is connected to the hammer rod. A pressure plate is arranged on the top of the vibration shaft, and a reset spring is arranged between the pressure plate and the bottom of the inner side of the vibration impactor. An air outlet is arranged on the bottom side wall of the vibration impactor. The compressed air in the air inlet pipe enters the vibration impactor to push the pressure plate to move until the pressure plate is deflated at the moment it approaches the air outlet and the vibration shaft is reset through the reset spring.

2. A vibration impact shell breaking device according to claim 1, characterized in that: The return spring sleeve is arranged on the peripheral side of the vibration shaft.

3. A vibration impact shell breaking device according to claim 1, characterized in that: The top of the vibration impactor is a sealing cover, a sealing ring is arranged on the top edge of the sealing cover, a first air inlet is arranged on the sealing cover, and the first air inlet is connected to the air inlet pipe.

4. A vibration impact shell breaking device according to claim 1, characterized in that: The invention also comprises a hammer shell, which is sleeved on the vibrating impactor and the peripheral side of the stroke cylinder, the bottom of the hammer shell is opened, and the hammer rod passes through the bottom of the hammer shell.

5. A vibration impact shell breaking device according to claim 4, characterized in that: A fixing part is arranged around the hammer rod, a buffer spring is sleeved around the hammer rod at the bottom of the hammer body shell, and a hammer head is arranged at the bottom of the hammer body.

6. A vibration impact shell breaking device according to claim 4, characterized in that: A mounting bracket is arranged on the peripheral side of the hammer shell.

7. A vibration impact shell breaking device according to claim 4, characterized in that: A fixing plate is arranged in the hammer shell, and the fixing plate is fixed between the stroke cylinder and the vibration impactor. The output end of the stroke cylinder and the air inlet pipe penetrate the fixing plate and are connected to the top of the vibration impactor.

8. A vibration impact shell breaking device according to claim 7, characterized in that: The air control valve is provided with a second air inlet and an air outlet, and the top of the air inlet pipe is communicated with the second air inlet.

9. A vibration impact shell breaking device according to claim 7, characterized in that: The fixing plate is provided with a through hole, and the top peripheral side of the hammer shell is also provided with a plurality of through holes.

10. A working method of a vibration impact shelling device, characterized in that: A vibration impact shelling device as claimed in any one of claims 1 to 9 is used, comprising the following steps: The air control valve opens, and compressed air enters the stroke cylinder and the intake pipe; The output end of the stroke cylinder extends to the maximum stroke, pushing the vibration impactor and the hammer rod to move until the bottom of the hammer rod is located on the top of the hard crust; The compressed air pushes the pressing plate to move until the pressing plate is close to the air outlet, and the air is released instantly, and the vibration shaft is pushed back to its original position through the reset spring, and this reciprocating cycle is repeated to achieve continuous striking of the hard crust.

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